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|---|---|---|---|---|
Privacy attacks in social media using photo tagging networks: a case study with Facebook
|
Information revelation and privacy in online social networks
|
Over-exposed?: privacy patterns and considerations in online and mobile photo sharing
|
eng_Latn
| 129,951 |
Privacy Prediction of Images Shared on Social Media Sites Using Deep Features
|
Over-exposed?: privacy patterns and considerations in online and mobile photo sharing
|
Exploring assessment factors contributing to students' study strategies: literature review.
|
eng_Latn
| 129,954 |
What's in a name: a study of names, gender inference, and gender behavior in facebook
|
Improved Use of Continuous Attributes in C4.5
|
A general approach to control a Positive Buck-Boost converter to achieve robustness against input voltage fluctuations and load changes
|
eng_Latn
| 129,976 |
Technology lets ads get personal
|
BBC Click investigates how technology is enabling adverts to be tailored to individuals consumers.
|
Researchers are using Facebook habits to study how tastes and values affect the formation of social relationships.
|
eng_Latn
| 129,997 |
The Digital Sin City: An Empirical Study of Craigslist's Impact on Prostitution Trends
|
Aiding the Detection of Fake Accounts in Large Scale Social Online Services
|
The interdisciplinary study of coordination
|
kor_Hang
| 130,390 |
A field trial of privacy nudges for facebook
|
" i regretted the minute i pressed share " : a qualitative study of regrets on facebook .
|
Initial Progress in Transfer for Deep Reinforcement Learning Algorithms
|
eng_Latn
| 130,395 |
Interactions on government Facebook pages: an empirical analysis
|
When social networks cross boundaries: a case study of workplace use of facebook and linkedin
|
Building Intelligent Learning Database Systems
|
eng_Latn
| 130,428 |
Interactions on government Facebook pages: an empirical analysis
|
When social networks cross boundaries: a case study of workplace use of facebook and linkedin
|
commerce a statistical test suite for random and pseudorandom number generators for cryptographic applications .
|
eng_Latn
| 130,430 |
Information revelation and internet privacy concerns on social network sites: a case study of facebook
|
Information revelation and privacy in online social networks
|
Transformation of pasta wheat (Triticum turgidum L. var. durum) with high-molecular-weight glutenin subunit genes and modification of dough functionality
|
eng_Latn
| 130,438 |
Mixed effects of ecological intensification on natural pest control providers: a short-term study for biotic homogenization in winter wheat fields
|
Interacting effects of pollination, water and nutrients on fruit tree performance
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,687 |
Measurement of atmospheric concentrations of common household pesticides: A pilot study.
|
Semivolatile organic compounds in residential air along the Arizona-Mexico border.
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,716 |
Simulation study of the effect of the chemical heterogeneity of activated carbon on water adsorption
|
Predicting the adsorption of n-perfluorohexane (n-C6F14) on BAM-P109 activated carbon using an ab initio force field
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,778 |
An experimental study of point location in general planar arrangements
|
Fast randomized point location without preprocessing in two- and three-dimensional Delaunay triangulations
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,788 |
Experiment study of chemo-mechanical coupling behavior of leached concrete
|
Numerical computations of rock dissolution and geomechanical effects for CO 2 geological storage
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,801 |
A classification study of marine phytoplankton on the base of improved SVM
|
Training support vector machines: an application to face detection
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,806 |
Conformity assessment of monitoring and simulation of CO2 storage: A case study from the Ketzin pilot site
|
Monitoring at the CO2 SINK site: A concept integrating geophysics, geochemistry and microbiology
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,807 |
Maximum Sustainable Yield and Bycatch Minimization “to the Extent Practicable”
|
Evaluation of the performance and robustness of VPA-based stock assessment and MSY-based management strategy to process error: The Atlantic bluefin tuna case study
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,838 |
Rate of methane-steam reforming reaction on the surface of molten BF slag : for heat recovery from molten slag by using a chemical reaction
|
Kinetic study on recovery heat of granulated blast-furnace slag through biomass gasification using CO2 as gasification agent
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,847 |
Plant Closure and the Multiplant Firm: Some Conceptual Issues:
|
Labor agencies and the temporality of struggles: A comparative study in the Israeli periphery
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,856 |
Synthesis, structure and thermokinetic studies on perchlorate salts of metal complexes containing a formamidine-type ligand
|
Theoretical study on the tautomerization of 1,5-diaminotetrazole (DAT)
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,867 |
experimental study of cement grout : rheological behavior and sedimentation
|
Lime-based injection grouts for the conservation of architectural surfaces
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,929 |
Synthesis of ethological studies on behavioural adaptation of the astronaut to space flight conditions.
|
LIFE AT THE FRANCO-ITALIAN CONCORDIA STATION IN ANTARCTICA FOR A VOYAGE TO MARS: Ethological study and anthropological perspectives
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,961 |
Analytical study of connectivity in wireless multihop networks utilizing beamforming
|
Spatial networks with wireless applications
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 130,977 |
Cryogenic Aspects of the UTSI-CFFF Superconducting Dipole Magnet for MHD Research
|
Feasibility study of large combined function magnets for the Jefferson lab 12 GeV upgrade
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 131,001 |
On approximate analytical solutions of rate equations for studying transient spectra of injection lasers
|
Fast spectral improvement in picosecond pulses generated from a DFB laser diode using a loosely coupled external cavity
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 131,010 |
A study of phase equilibria in hydrocarbon-CO₂ systems
|
PROPER INTERPRETATION OF FREEZING AND HYDRATE PREDICTION RESULTS FROM PROCESS SIMULATION
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 131,021 |
Gas‐phase thermolysis of sulfur compounds. Part VIII. Chloromethyl allyl, cyanomethyl allyl, 1‐cyanoethyl allyl and neopentyl allyl sulfides
|
Computational study of the thermal decomposition and the thermochemistry of allyl ethers and allyl sulfides
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 131,027 |
Transition state structures and intermediates modeling carboxylation reactions catalyzed by rubisco. a quantum chemical study of the role of magnesium and its coordination sphere
|
Quantum chemical modeling of the kinetic isotope effect of the carboxylation step in RuBisCO
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 131,059 |
Mechanistic and Kinetic Study of the Gas-Phase Reaction of Atomic Chlorine with Cyclohexanone using an Absolute and a Relative Technique; Influence of Temperature
|
Kinetic study of the gas-phase reaction of atomic chlorine with a series of aldehydes
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 131,121 |
Predicting stabilizing mutations in proteins using Poisson–Boltzmann based models: study of unfolded state ensemble models and development of a successful binary classifier based on residue interaction energies
|
Modeling Solvent Environments: Applications to Simulations of Biomolecules
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 131,198 |
Enhancing Products by Embedding Agents: Adding an Agent to a Robot for Monitoring, Maintenance and Disaster Prevention
|
Internet of smart things, a study on embedding agents and information as a service
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 131,227 |
A computational study of [2.2]cyclophanes.
|
A Critical Assessment of the Performance of Magnetic and Electronic Indices of Aromaticity
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 131,232 |
Laboratory study of sticking and desorption of H2 and its significance in the chemical evolution of dense interstellar medium
|
Adsorption of H$_2$ on Amorphous Solid Water Studied with Molecular Dynamics Simulations
|
Due to symbiotic N2 fixation, five years of elevated atmospheric pCO2 had no effect on the N concentration of plant litter in fertile, mixed grassland
|
eng_Latn
| 131,238 |
Ecology: Nitrogen Oxide Pollution May Spark Seeds' Growth
|
Two ecologists have learned that the seeds of a common California wildflower can be prompted to germinate by exposure to nitrogen oxides, gases produced by both natural wildfires and motor vehicles and power plants. The finding, reported on page ::: 1248, helps explain why the flower springs up so quickly after brush fires. It also raises a provocative question: Could nitrogen oxides in air pollution be fooling the seeds of this and other fire-adapted plants into germinating when conditions are deadly to the seedlings?
|
Adopt optimum compound design to study the regression relation of hybrid maize yield, relating to density ,quantity applied of feirtilizer-N、 fertilizer-P_2O_5、 fertilizer-K_2O Regression model was set and the optimum cultivation technique was obtained by the aid of computer statistics.
|
eng_Latn
| 131,281 |
Condition of water and soil at skirts of Visnagar-North Gujarat.
|
Seven different sites were selected for study. Different parameters relating to water and soil were considered. Method prescribed by Saxena (1998) was adopted for analyzing the data. The quality of water and soil was considerably good, which supported healthy aquatic life as well as other surrounding fauna and flora. At some site due to anthropogenic pressure the quality of water deteriorated. To maintain aquatic biodiversity it is essential to concentrate our mind that such water bodies should be protected.
|
The construction of several new geothermal steam power plants in both the Geysers area and the Imperial Valley area of California is discussed. Some political and environmental problems involved are mentioned. The oil and power companies involved at each site and brief discussions of their approach to obtaining power are given. (MOW)
|
eng_Latn
| 131,321 |
ANALISIS ENERGI INDONESIA : APLIKASI LEAP
|
This paper aims to analyze the energy Indonesia from 2010 to 2030, energy consumption in the count of four sectors
|
The main innovation of the study is the use of a novel energo-environmental approach for investigation of biogas production, and analysis of the amount of methane and biogas produced in terms of en...
|
yue_Hant
| 131,328 |
When being able is not enough. The combined value of positive affect and self-efficacy for job satisfaction in teaching
|
Abstract This study examines how good strategies and praxis interplay with positive affect and self-efficacy to determine a teacher's job satisfaction, in the hypothesis that teaching effectively does not in itself guarantee satisfaction: positive affect and self-efficacy beliefs are needed. Self-assessment scales, designed to assess the use of efficient teaching strategies and praxes, self-efficacy in teaching, positive affect and job satisfaction, were completed by 399 teachers. Structural equation modelling (SEM) analysis revealed the mediating role of both positive affect and self-efficacy beliefs in the relationship between teaching strategies/praxes and job satisfaction.
|
To achieve sustainable using of energy,this paper firstly analyzed the present situation of energy supply and demand in Liaoning Province.Then based on related data from 1995 to 2011,established the simultaneous equation model to make quantitative analysis of the influence factors and the mutual relations between energy supply and demand in Liaoning Province.The results showed that the energy supply impacted the energy demand and energy demand directly impacted the energy economic efficiency.At the same time,energy economic efficiency effected the energy demand through influencing economic growth.In all of the effect factors,economy and population growth made a prominently influence on energy demand,and energy economic efficiency was greatly influenced by the energy conversion rate.
|
eng_Latn
| 131,330 |
Effective energy management in polyethylene production
|
The energy management program is the important part of the satisfying any industrial production especially for energy process like low density polyethylene (LDPE) production. Therefore this study based on industrial polymerization process data proposed the option for energy saving applying flue gases heat recovery. Energy analysis shows the increase of process efficiency simultaneously the decrease of thermal pollution. Using an economizer (ECO) for boiler feed water preheating with flue gases heat, the natural gas consumption lowered for 10, 7%. At the same time the flue gases exhaust temperature diminished from 2300C to 470C. The presented analysis appears to be attractive for industrial users.
|
By making a comparison and analysis of the new classical theory and the X efficiency theory, the essay comes to a series of conclusions. (1) Enterprise efficiency is the integration of disposition efficiency of enterprise resources and the organization efficiency of the enterprise. (2) Disposition is to a great extent determined by organization. (3) To improve organization efficiency, an inspiration mechanism should be established to improve quality and enthusiasm of the personnel.
|
eng_Latn
| 131,381 |
Physical Activity and Blood Glucose Effects on Weight Gain Over 12 Years in Middle-Aged Adults
|
This work was supported by NHMRC [grant numbers 973302, 179805, 157125, 1002160, 1063907] and ARC [grant number 130101705]. Nicolas Cherbuin and Kaarin Anstey’s Research Fellowship are funded by ARC [grant number ::: 120100227] and NHMRC [grant number 1002560].
|
The change of industrial structure is an important factor that affects the energy consumption.The study shows that the relation between energy consumption and the growth of the area economy is close;the second industry much affects energy consumption but the influence of the first and the third industries on the energy consumption is not obvious.For the first and the second industries that the energy consumption strength occupies the elastic coefficient of the GDP proportion of the area is positive value;while for the third industry,that the energy consumption strength occupies the elastic coefficient of GDP proportion of the area is negative value.So,for the construction of Central Plain area,it is necessary to constantly expand energy supply and enhance the utilization rate of the third industry from both the production and the consumption aspects.
|
eng_Latn
| 131,382 |
Method and apparatus for generating electrical energy
|
The invention relates to a method and a device for generating electrical energy, according to the preamble of claims 1 and 6. In order to achieve this that the efficiency of photovoltaic solar energy systems and the efficiency with respect to the generated electric energy significantly increased and yet the heat problem is solved, is according to the invention proposed that is provided by a medium in the flow of cooled area on the irradiation side facing away side a, the waste heat corresponds to an evaporator of a low temperature ORC system in which the results during cooling waste heat is nachverstromt in a turbine-generator unit.
|
The main innovation of the study is the use of a novel energo-environmental approach for investigation of biogas production, and analysis of the amount of methane and biogas produced in terms of en...
|
eng_Latn
| 131,383 |
An Empirical Study of the Relation between the Industrial Structure and the Energy Consumption of Henan Province
|
The change of industrial structure is an important factor that affects the energy consumption.The study shows that the relation between energy consumption and the growth of the area economy is close;the second industry much affects energy consumption but the influence of the first and the third industries on the energy consumption is not obvious.For the first and the second industries that the energy consumption strength occupies the elastic coefficient of the GDP proportion of the area is positive value;while for the third industry,that the energy consumption strength occupies the elastic coefficient of GDP proportion of the area is negative value.So,for the construction of Central Plain area,it is necessary to constantly expand energy supply and enhance the utilization rate of the third industry from both the production and the consumption aspects.
|
The article introduces the teaching reformation focusing on course project of power engineering detection and control technology, and discusses the new reformation in the future.
|
eng_Latn
| 131,389 |
Hydrogen - A sustainable energy carrier
|
Abstract Hydrogen may play a key role in a future sustainable energy system as a carrier of renewable energy to replace hydrocarbons. This review describes the fundamental physical and chemical properties of hydrogen and basic theories of hydrogen sorption reactions, followed by the emphasis on state-of-the-art of the hydrogen storage properties of selected interstitial metallic hydrides and magnesium hydride, especially for stationary energy storage related utilizations. Finally, new perspectives for utilization of metal hydrides in other applications will be reviewed.
|
Abstract In Denmark solar fractions up to about 50% are seen for large scale solar district heating systems. The feasibility of higher solar fractions has been investigated in a case study. There is no direct subsidy for solar heating in Denmark, but the taxes on the alternative (fuels) affects the feasibility of solar heating for any district heating plant. The results show that solar heat can be provided at competitive costs compared to what is seen at many Danish district heating plants. The utility in the case study has not yet decided on a solar district heating system size.
|
eng_Latn
| 131,393 |
Towards Solar District Heating with More than 70% Solar Fraction
|
Abstract In Denmark solar fractions up to about 50% are seen for large scale solar district heating systems. The feasibility of higher solar fractions has been investigated in a case study. There is no direct subsidy for solar heating in Denmark, but the taxes on the alternative (fuels) affects the feasibility of solar heating for any district heating plant. The results show that solar heat can be provided at competitive costs compared to what is seen at many Danish district heating plants. The utility in the case study has not yet decided on a solar district heating system size.
|
SUBTITLE: HOPING TO EMULATE NETJETS' SUCCESS ALBEIT ON A SMALLER SCALE, DOZENS OF COMPANIES HAVE EMERGED AS REGIONAL FRACTIONAL PROVIDERS. BUT ARE THEY REALLY AND WHAT CAN THEY OFFER SHAREHOLDERS THAT THE NATIONAL PROGRAMS CANNOT?
|
eng_Latn
| 131,401 |
PROCESS HEAT FROM NUCLEAR REACTORS
|
The comparative economics of the use of nuclear energy versus conventional fuels were considered for supplying process heat to be applied in reforming methane to hydrogens coal gasification, low-temperature carbonization of coals ferrous and nonferrous metallurgy, petroleum refining. production of acetylene, and the direct fixation of nitrogen. Price schedules are deduced at which the nuclear power must be produced in order to be competitive with conventional fuels. and various aspects relating to its use are discussed. An appraisal of the present status of high-temperature reactors, which might be used for process heatings is presenteds along with an outline of a feasibility study which is being carried on by the joint effort of AEC and Bureau of Mines for an indirect process cycle reactor. Unsolved problems are considered. (J.R.D.)
|
Abstract A multistep direct reaction model with pickup is extended to described the formation of tritons and 3 He-particles in nucleon- and pion-induced precompound reactions. In the latter ones, those tritons not accounted for by pickup can be explained as primary ones from absorption by α-clusters, for which a 10% probability is deduced.
|
yue_Hant
| 131,405 |
Modeling and simulation of an integrated steam reforming and nuclear heat system
|
Abstract In this study, a dynamic and two-dimensional model for a steam methane reforming process integrated with nuclear heat production is developed. The model is based on first principles and considers the conservation of mass, momentum and energy within the system. The model is multi-scale, considering both bulk gas effects as well as spatial differences within the catalyst particles. Very few model parameters need to be fit based on the design specifications reported in the literature. The resulting model fits the reported design conditions of two separate pilot-scale studies (ranging from 0.4 to 10 MW heat transfer duty). A sensitivity analysis indicated that disturbances in the helium feed conditions significantly affect the system, but the overall system performance only changes slightly even for the large changes in the value of the most uncertain parameters.
|
With the development of the state overhaul in hydroelectric generating set, it is necessary to realize the state monitoring for the hydroelectric generating set, know and deal with the running status in time. Considering the diversity and the complication of state monitoring in hydroelectric generating set, combined with practice, items and implementing solution based on PXI instrument and LabVIEW of on-line monitoring are proposed. The realization of online real-time monitoring of the hydroelectric generating set by the state monitoring system through collecting, processing and analyzing of status value is described in this essay, which will enhance the efficiency of the hydroelectric generating set marvelously. The system is applied in the state overhaul for the hydroelectric generating set.
|
eng_Latn
| 131,406 |
The Principle of Entrance Examination System Reform for China's College——Take the reform of college entrance examination of Jiangsu Province as an example
|
The college entrance examination system reform is a certain degree of law and principles.This article describes college entrance examination system reform should be guided by fairness,stability,continuity,local,systems and scientific principles,and nearly 8 years,Jiangsu college entrance examination system to be the case for reform,deepen their understanding of the principles of the note,with a view to China's college entrance examination system reform to play the role of reference.
|
Each country has implemented various environmental policies to prevent natural disasters and destruction of ecosystem caused by global warming. The republic of Korea also was performed building energy efficiency rating certification system as part of paradigm of 'Low carbon green growth' since 2010. However, the status on the building energy efficiency rating certification system has not been analyzed. In this study, We analyzed the elements affecting the energy efficiency of buildings focusing the status and certification cases of the building energy efficiency rating certification system. An analysis of certification system status and certification cases shows the building of Southern and Jeju Island should be considered measures to reduce cooling load at the design phase. And designer should use the high-performance heating, cooling, water heating systems, and reduce electricity use.
|
eng_Latn
| 131,409 |
What are some tips on how to independently study nuclear science?
|
How should I study in nuclear science?
|
What are the advantages of nuclear energy? What are the disadvantages?
|
eng_Latn
| 131,598 |
In this paper, we give a necessary and sufficient condition for the strong convergence of an implicit random iteration process with errors to a common fixed point for a finite family of asymptotically quasi-nonexpansive in the intermediate sense random operators and also prove some strong convergence theorems using condition (\(\overline{C}\)) and the semi-compact condition for said iteration scheme and operators. The results presented in this paper extend and improve the recent ones obtained by S. Plubtieng, P. Kumam and R. Wangkeeree, and also by the author.
|
We construct random iterative processes for weakly contractive and asymptotically nonexpansive random operators and study necessary conditions for the convergence of these processes. It is shown that they converge to the random fixed points of these operators in the setting of Banach spaces. We also proved that an implicit random iterative process converges to the common random fixed point of a finite family of asymptotically quasi-nonexpansive random operators in uniformly convex Banach spaces.
|
We construct random iterative processes for weakly contractive and asymptotically nonexpansive random operators and study necessary conditions for the convergence of these processes. It is shown that they converge to the random fixed points of these operators in the setting of Banach spaces. We also proved that an implicit random iterative process converges to the common random fixed point of a finite family of asymptotically quasi-nonexpansive random operators in uniformly convex Banach spaces.
|
eng_Latn
| 131,786 |
Power functions with low uniformity on odd characteristic finite fields
|
In this paper, we give some new low differential uniformity of some power functions defined on finite fields with odd characteristic. As corollaries of the uniformity, we obtain two families of almost perfect nonlinear functions in GF(3 n ) and GF(5 n ) separately. Our results can be used to prove the Dobbertin et al.’s conjecture.
|
In this work, we study the existence and multiplicity of positive solutions for the higher order p-Laplacian boundary value problem with even derivatives
|
eng_Latn
| 131,797 |
The purpose of the present paper is to investigate some interesting properties on generalized convolutions of functions for the classes HP ∗(α),HS(α) andHC(α). Further, an application of the convolution on certain integral operator are mentioned. AMS 2010 Mathematics Subject Classification : 30C45, 26D15.
|
A linear operator is defined which acts on an analytic function in the open unit disk by forming its Hadamard product with an incomplete beta function. The operator is shown to be convenient in discussing starlike, convex, and prestarlike functions. It is applied to the study of certain classes of hypergeometric functions which constitute dense subsets in the classes of starlike functions of order $\alpha $, convex functions of order $\alpha $, and prestarlike functions of order $\alpha $. Integral representations of the functions in these classes are obtained from the integral representation of the starlike functions of order $\alpha $.
|
Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
|
eng_Latn
| 131,839 |
We consider the estimation of the ruin probability in a linear portfolio of insurance risk processes. We model the total claim amount of different business activities by compound Poisson processes. We allow for dependence of the components, which we model by a Levy copula. We study in detail a Clayton-Pareto model as representative for a large claims model and a Clayton-exponential model as a small claims model. We compare the ruin probability in the Clayton dependence model with the corresponding independent and completely dependent models.
|
It is shown that the usual method of establishing Cramer's estimate also works for Levy processes.
|
Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
|
eng_Latn
| 131,863 |
Some weighted approximations in probability of self-normalized and Studentized partial sums processes are reviewed and also described in the context of studying the problem of change in the mean of random variables in the domain of attraction of the normal law. This survey of such results constitutes an extended abstract of the talk with the same title that was presented by Miklos Csorgő on July 18, 2005 in Mikulov, based on the joint works M. Csorgő, B. Szyszkowicz, and Q. Wang (2001), (2003) and (2004) by the three of us.
|
This paper investigates weighted approximations for studentized $U$-statistics type processes, both with symmetric and antisymmetric kernels, only under the assumption that the distribution of the projection variate is in the domain of attraction of the normal law. The classical second moment condition $E|h(X_1,X_2)|^2 < \infty$ is also relaxed in both cases. The results can be used for testing the null assumption of having a random sample versus the alternative that there is a change in distribution in the sequence.
|
Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
|
eng_Latn
| 131,865 |
We study Toeplitz operators on Bergman spaces using techniques from the analysis of Dirac-type operators on complete Riemannian manifolds, and prove an index theorem of Boutet de Monvel from this point of view. Our approach is similar to that of Baum and Douglas [2], but we replace boundary value theory for the Dolbeaut operator with much simpler estimates on complete manifolds.
|
We identify a class of Dirac-Schrodinger operators on in- complete manifolds and show that the index theory of these operators, including its expression in K homology, is parallel to that of Dirac-Schrodinger operators on complete manifolds.
|
Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
|
eng_Latn
| 131,869 |
We study the Banach space () of the harmonic mappings on the open unit disk satisfying the condition where and denote the first complex partial derivatives of . We show that several properties that are valid for the space of analytic functions known as the -Bloch space extend to . In particular, we prove that for the mappings in can be characterized in terms of a Lipschitz condition relative to the metric defined by . When , the harmonic -Bloch space can be viewed as the harmonic growth space of order , while for , is the space of harmonic mappings that are Lipschitz of order .
|
In this work, we characterize the bounded and compact weighted composition operators from a large class of Banach space of analytic functions on the open unit disk into weighted Banach spaces, determine the operator norm exactly and obtain estimates on the essential norm. We obtain an exact formula of the essential norm when such operators map the Hardy spaces, the weighted Bergman spaces, the Bloch space and the little Bloch space into the Banach space H μ ∞ (where the weight μ is a continuous function). In this general setting we also study such operators when the target space is an α-Bloch space for any α > 0 and more generally, any Bloch-type space. As special cases, we derive norm and essential norm approximations for the operators acting on the Hardy spaces and the weighted Bergman spaces. Immediate corollaries are results on certain integral operators.
|
Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
|
eng_Latn
| 131,871 |
The paper considers the properties of vector analogs of the Sobolev spaces, , which appear in the study of various models of continuous media. Korn's inequality, proved in the paper, makes it possible to reduce the problem of compactness of the imbedding operators in these spaces to the scalar case and, consequently, to apply the scalar imbedding theorem of S. L. Sobolev. Heretofore, Korn's inequality in the general form was known only for .Bibliography: 18 items.
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We discuss partial regularity results concerning local minimizers u : R ⊃ Ω → R of variational integrals of the form ∫ Ω { a(| (w)|) + b(| div(w)|) } dx, where a and b are N -functions of rather general type. We prove partial regularity results under quite natural conditions between a and b. Furthermore we can extend this to the non-autonomous situation which finally leads to the study of minimizers of the functional ∫ Ω { (1 + | (w)|) p(x) 2 + (1 + | div(w)|) q(x) 2 } dx, where p and q are Lipschitz-functions. Mathematics Subject Classification (2000): 94 N 60, 74 B 20, 74 G 40, 74 G 65, 35 J 50
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Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
|
eng_Latn
| 131,872 |
We study the existence and uniqueness of martingale measures in the exponential Levy models of the form $S_t=e^{X_t}$, $S_t=e^{X_{\tau_t}}$, where X is a Levy process and $\tau$ is an independent increasing process.
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We consider structure preserving measure transforms for time-changed Levy processes. Within this class of transforms preserving the time-changed Levy structure, we derive equivalent martingale measures minimizing relative q-entropy. They combine the corresponding transform for the Levy process with an Esscher transform on the time change. Structure preservation is found to be an inherent property of minimal q-entropy martingale measures under continuous time changes, whereas it imposes an additional restriction for discontinuous time changes.
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Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
|
eng_Latn
| 131,874 |
This paper is concerned with the approximation of the solution for neutral fractional differential equation with nonlocal conditions in an arbitrary separable Hilbert space H . We study an associated integral equation and then, consider a sequence of approximate integral equations obtained by the projection of considered associated nonlocal neutral fractional integral equation onto finite dimensional space. The sufficient condition for the existence and uniqueness of solutions to every approximate integral equation is derived by using analytic semigroup and Banach fixed point theorem. We demonstrate convergence of the solutions of the approximate integral equations to the solution of the associated integral equation. Moreover, we consider the Faedo-Galerkin approximations of the solution and demonstrate some convergence results. An example is also provided to illustrate the discussed abstract theory.
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This work is concerned with a class of neutral functional differential equations with nonlocal history conditions in a Hilbert space. The approximation of solution to a class of such problems is studied. Moreover, the convergence of Faedo–Galerkin approximation of solution is shown. For illustration, an example is worked out.
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Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
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eng_Latn
| 131,875 |
The purpose of this article is to study the hitting times for random dynamical systems. For general systems we give a lower bound in terms of the local dimension. For fast mixing systems we obtain an equality. Moreover, under a power law decay of correlations we obtain lower and upper bounds of the hitting times for absolutely continuous stationary measures.
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In this paper we study the distributions of hitting and return times for observations of dynamical systems. We apply the results to get an exponential law for the distributions of hitting and return times for rapidly mixing random dynamical systems. In particular, this allows us to obtain an exponential law for random expanding maps, random circle maps expanding on average and randomly perturbed dynamical systems.
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Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
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eng_Latn
| 131,882 |
We consider the change-point problem for the marginal distribution of subordinated Gaussian processes that exhibit long-range dependence. The asymptotic distributions of Kolmogorov-Smirnov- and Cram\'{e}r-von Mises type statistics are investigated under local alternatives. By doing so we are able to compute the asymptotic relative efficiency of the mentioned tests and the CUSUM test. In the special case of a mean-shift in Gaussian data it is always $1$. Moreover our theory covers the scenario where the Hermite rank of the underlying process changes. In a small simulation study we show that the theoretical findings carry over to the finite sample performance of the tests.
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We propose a simple testing procedure to test for a change point in the mean of a possibly long‐range dependent time series. Under the null hypothesis, the series is stationary with long‐range dependence and our test statistic converges to a non‐degenerate distribution, whereas under the alternative, the series has a change point in the mean and the test statistic diverges to infinity. We demonstrate the good size and power properties of our test via simulations and illustrate its usefulness by analysing two real data sets.
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We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero.
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eng_Latn
| 131,888 |
Using variational measures, we characterize additive interval functions which are indefinite Henstock?Kurzweil integrals in the Euclidean space, answering a problem posed by W. B. Jurkat and R. W. Knizia and independently by Lee Peng-Yee and Chew Tuan-Seng. This also extends a result of Bongiorno, Di Piazza and Skvortsov.
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This paper is devoted to the study of existence and dependence of solutions of the first-order periodic boundary value problems involving the distributional Henstock-Kurzweil integral. The methods used are mainly the method of upper and lower solutions and a fixed point theorem.
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Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
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eng_Latn
| 131,892 |
In this paper, we study the boundedness of multilinear fractional integral operators on variable exponent spaces.It is obtained that these operators are both bounded from strong and weak Lebesgue spaces with variable exponent spaces into Lipschitz type spaces with variable exponent, which gives some new results for previous published papers.A simple way is obtained that is colsely linked with a class of fractional integral operator.
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A multilinear version of the Boyd interpolation theorem is proved in the context of quasi-normed rearrangement-invariant spaces. A multilinear Marcinkiewicz interpolation theorem is obtained as a corollary. Several applications are given, including estimates for bilinear fractional integrals.
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Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
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eng_Latn
| 131,905 |
Summary form only given. The Frazier-Jawerth transform (FJT), originally the phi-transform, is similar to the wavelet transform and is distinguished by the fact that the analyzing functions form an overcomplete basis for he signal space and may be nonorthogonal. This added flexibility makes possible the definition of optimal analyzing functions, which are the focus of this study. For continuous-time and infinite discrete-time signals, the optimally localized functions are the prolate spheroidal wave functions and their discrete versions. For finite discrete-time signals and images, generalizations of these functions that are applicable for use in the FJT have been identified by the authors. >
|
A discrete time series has associated with it an amplitude spectrum which is a periodic function of frequency. This paper investigates the extent to which a time series can be concentrated on a finite index set and also have its spectrum concentrated on a subinterval of the fundamental period of the spectrum. Key to the analysis are certain sequences, called discrete prolate spheroidal sequences, and certain functions of frequency called discrete prolate spheroidal functions. Their mathematical properties are investigated in great detail, and many applications to signal analysis are pointed out.
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Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
|
eng_Latn
| 131,920 |
We give a generalization of the Newman-Shapiro Isometry Theorem to the case of Hilbert space-valued entire functions, which are square-summable with respect to the Gaussian measure μ on ℂn, together with some applications in the theory of Toeplitz operators with operator-valued symbols. The study of various properties (such as density of domains, cores, closedness and boundedness from below) of these operators in illustrated with many relevant examples.
|
We provide a sufficient condition for the compactness of a Toeplitz operator acting on the Segal-Bargmann space of vector-valued functions written in terms of an associated operator-valued kernel.
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Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
|
eng_Latn
| 131,923 |
We introduce the time dynamic random conductance model and consider the heat kernel for the random walk on this environment. In the case where conductances are bounded above, an example environment is presented which exhibits heat kernel decay that is asymptotically slower than in the well studied time homogeneous case - being close to $O\left( n^{-1}\right) $ as opposed to $O\left( n^{-2}\right) $. The example environment given is a modification of an environment introduced in Berger, Biskup, Hoffman and Kozma (2008).
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We study models of continuous-time, symmetric random walks in random environment on the d-dimensional integer lattice, driven by a field of i.i.d random nearest-neighbor conductances bounded only from above with a power law tail near 0. We are interested in estimating the quenched asymptotic behavior of the on-diagonal heat-kernel. We show that the spectral dimension is standard when we lighten sufficiently the tails of the conductances. As an expected consequence, the same result holds for the discrete-time case.
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We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero.
|
eng_Latn
| 131,927 |
We study the moments of the Dirichlet L-function when defined over the polynomial ring over finite fields. We find an asymptotic formula to the fourth moment of the central value of Dirichlet L functions in this context. We also find a lower bound to the 2kth moment of these L-functions.
|
We prove equidistribution results, in the function field setting, for the L-functions attached to primitive, odd Dirichlet characters with a fixed squarefree conductor.
|
Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.
|
eng_Latn
| 131,928 |
Mean square convergence of a semidiscrete scheme for SPDEs of Zakai type driven by square integrable martingales
|
In this short note, a direct proof of L2 convergence of an Euler-Maruyama approximation of a Zakai equation driven by a square integrable martingale is shown. The order of convergence is as known for real-valued stochastic differential equations and for less general driving noises O(√Δt) for a time discretization step size Δt. © 2010 Published by Elsevier Ltd.
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We describe preliminary results from an effort to quantify the uncertainties in parton distribution functions and the resulting uncertainties in predicted physical quantities. The production cross section of the $W$ boson is given as a first example. Constraints due to the full data sets of the CTEQ global analysis are used in this study. Two complementary approaches, based on the Hessian and the Lagrange multiplier method respectively, are outlined. We discuss issues on obtaining meaningful uncertainty estimates that include the effect of correlated experimental systematic uncertainties and illustrate them with detailed calculations using one set of precision DIS data.
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eng_Latn
| 131,937 |
Characteristic Kernels on Structured Domains Excel in Robotics and Human Action Recognition
|
Embedding probability distributions into a sufficiently rich (characteristic) reproducing kernel Hilbert space enables us to take higher order statistics into account. Characterization also retains effective statistical relation between inputs and outputs in regression and classification. Recent works established conditions for characteristic kernels on groups and semigroups. Here we study characteristic kernels on periodic domains, rotation matrices, and histograms. Such structured domains are relevant for homogeneity testing, forward kinematics, forward dynamics, inverse dynamics, etc. Our kernel-based methods with tailored characteristic kernels outperform previous methods on robotics problems and also on a widely used benchmark for recognition of human actions in videos.
|
Given ?>0 andp?(0,1), we consider the following problem: findu such that $$\begin{gathered} - \Delta u + \lambda [u]_ + ^p = 0in\Omega , \hfill \\ u = 1on\partial \Omega , \hfill \\ \end{gathered} $$ whereΩ??2 is a smooth convex domain. We prove optimalH 1 andL ? error bounds for the standard continuous piecewise linear Galerkin finite element approximation. In addition we analyse a more practical approximation using numerical integration on the nonlinear term. Finally we consider a modified nonlinear SOR algorithm, which is shown to be globally convergent, for solving the algebraic system derived from the more practical approximation.
|
eng_Latn
| 131,939 |
Upper bound for the size of monotone span programs
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In this paper we consider certain prop- erties of an general access structure and its dual. In particular we prove that corer = corerL. We also es- tablish a new upper bound for the size of MSP, which computes connected access structure I?. We show that the size of a MSP is limited above by the sum of the number of minimal and the number of maximal sets minus one. This is the first upper bound on the size of MSPs to our knowledge.
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We study regularity properties of a positive measure in the euclidean space in terms of two square functions which are the multiplicative analogues of the usual martingale square function and of the Lusin area function of a harmonic function. The size of ...
|
eng_Latn
| 131,943 |
Uniform Asymptotic Expansions of Symmetric Elliptic Integrals
|
Symmetric standard elliptic integrals are considered when two or more parameters are larger than the others. The distributional approach is used to derive seven expansions of these integrals in inverse powers of the asymptotic parameters. Some of these expansions also involve logarithmic terms in the asymptotic variables. These expansions are uniformly convergent when the asymptotic parameters are greater than the remaining ones. The coefficients of six of these expansions involve hypergeometric functions with less parameters than the original integrals. The coefficients of the seventh expansion again involve elliptic integrals, but with less parameters than the original integrals. The convergence speed of any of these expansions increases for an increasing difference between the asymptotic variables and the remaining ones. All the expansions are accompanied by an error bound at any order of the approximation.
|
We study regularity properties of a positive measure in the euclidean space in terms of two square functions which are the multiplicative analogues of the usual martingale square function and of the Lusin area function of a harmonic function. The size of ...
|
eng_Latn
| 131,949 |
Uniqueness theory for Laplace series
|
Apparatus for storing and reading data in association with a card which has a timing track comprising at least three different kinds of optically-readable timing markings arranged in the timing track in a cyclic sequence, and a data track, the apparatus including three optical timing sensors respectively responsive to the three different kinds of timing markings, and a reading direction detector controlled by the timing sensors.
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We study regularity properties of a positive measure in the euclidean space in terms of two square functions which are the multiplicative analogues of the usual martingale square function and of the Lusin area function of a harmonic function. The size of ...
|
eng_Latn
| 131,957 |
A Study to Determine to What Extent the Tom Bean School, Grayson County, Texas, is a Community School
|
This is a study to determine to what extent the Tom Bean Public School of Grayson County, Texas, is a community school.
|
We prove a sufficient condition for frame-type wavelet series in $L^p$, the Hardy space $H^1$, and BMO. For example, functions in these spaces are shown to have expansions in terms of the Mexican hat wavelet, thus giving a strong answer to an old question of Meyer. ::: Bijectivity of the wavelet frame operator acting on Hardy space is established with the help of new frequency-domain estimates on the Calder\'on-Zygmund constants of the frame kernel.
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eng_Latn
| 131,966 |
Toeplitz operators on Bergman spaces and Hardy multipliers
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Abstract. We study Toeplitz operators Ta with radial symbols in weighted Bergman spaces Aμ, 1 < p < ∞, on the disc. Using a decomposition of Aμ into finite dimensional subspaces the operator Ta can be considered as a coefficient multiplier. This leads to new results on boundedness of Ta and also shows a connection to Hardy space multipliers. Using another method we also prove a necessary and suffient condition for the boundedness of Ta for a satisfying an assumption on the positivity of certain indefinite integrals.
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We study regularity properties of a positive measure in the euclidean space in terms of two square functions which are the multiplicative analogues of the usual martingale square function and of the Lusin area function of a harmonic function. The size of ...
|
eng_Latn
| 131,974 |
Schur type poly-Bernoulli numbers
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The poly-Bernoulli numbers and its relative are defined by the generating series using the polylogarithm series, and we call them type $B$ and $C$, respectively. As a generalization of these poly-Bernoulli numbers, we introduce Schur type poly-Bernoulli numbers and investigate their properties. First, we define a generalization of Arakawa-Kaneko multiple zeta functions and obtain their expression in terms of Schur type Bernoulli numbers. Next, under the restriction to the hook type, we define a generalization of Kaneko-Tsumura multiple zeta functions and obtain similar expression in terms of Schur type Bernoulli numbers. Lastly, we study more properties such as a recurrence formula, a relation formula between Bernoulli numbers and a description in terms of the Stirling numbers.
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We deal with linear parabolic (in the sense ::: of Petrovskii) systems of order $2b$ with discontinuous principal ::: coefficients. A priori estimates in Sobolev and ::: Sobolev--Morrey spaces are proved for the strong solutions by ::: means of potential analysis and boundedness of certain singular ::: integral operators with kernels of mixed homogeneity. As a ::: byproduct, precise characterization of the Morrey, $BMO$ and ::: Holder regularity is given for the solutions and their ::: derivatives up to order $2b-1.$
|
eng_Latn
| 131,980 |
UNIFORMLY BOUNDED COMPOSITION OPERATORS ON A BANACH SPACE OF BOUNDED WIENER-YOUNG VARIATION FUNCTIONS
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䅢stract. We prove, under some general assumptions, that a generator of any uniformly bounded Nemytskij operator, mapping a subset of space of functions of bounded variation in the sense of Wiener-Young into another space of this type, must be an affine function with respect to the second variable.
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Abstract In this paper, we study the long-time behavior of solutions for a non-autonomous strongly damped wave equation. We first prove the existence of a uniform attractor for the equation with a translation compact driving force and then obtain an upper estimate for the Kolmogorov e -entropy of the uniform attractor. Finally we obtain an upper bound of the fractal dimension of the uniform attractor with quasiperiodic force.
|
yue_Hant
| 131,997 |
Interpretation of infinitely clipped speech properties
|
The paper is based upon the statistical theory of signals. It is shown that the variation of the clipped Gaussian noise spectrum is 5 percent, while the normalized cross-correlation function is 0.80; the results are extended to more general cases. A property of the conditional mean value of speech signals is derived. A typical value of the normalized intelligibility of clipped speech in the presence of noise is 0.70 for S/N = 3 dB; assuming the ear is a clipper, theoretical results are well in agreement. The existence of an intelligibility threshold is shown. The need for information on the envelope (or dynamics) of the speech wave to meet the requirement of naturalness is underlined.
|
We study a class of hyperbolic partial differential equations on a one dimensional spatial domain with control and observation at the boundary. Using the idea of feedback we show these systems are well-posed in the sense of Weiss and Salamon if and only if the state operator generates a C0-semigroup. Furthermore, we show that the corresponding transfer function is regular, i.e., has a limit for s going to infinity.
|
eng_Latn
| 132,008 |
A note on a Bäcklund transformation for the continuous Heisenberg model
|
Abstract A formula for the Backlund transformation for the continuous Heisenberg model is given and immersed singular knots in three-space are constructed.
|
A weightedL2 norm is introduced in which Markov operators, e.g., associated with noisy maps, are contracting provided the kernel (i.e., the transitional distribution) is smooth enough. This results in strong relaxational properties of noisy maps. Similar to this norm, integral functionals appear useful when studying spatiotemporal chaos and random fields.
|
eng_Latn
| 132,013 |
Sharp energy criteria of blow-up for the energy-critical Klein-Gordon equation
|
In this paper, we study the sharp energy criteria of blow-up and global existence for the nonlinear Klein-Gordon equation by the sharp Gagliardo-Nirebergy-Sobolev inequality.
|
The matrix formalism previously introduced for the discussion of polymer dynamics is rendered more tractable by the introduction of an explicit operator representation satisfying boson commutation rules. Techniques are devised by which singular functions of segment coordinates may be expanded in a fluctuation series (containing ordered products of boson operators) around an equilibrium or nonequilibrium average. The techniques are here applied to equilibrium excluded‐volume expansions, and are shown to give good results. The detailed numerical results are presented in the following paper. The Gaussian potential is adopted for polymer chains in a theta solvent, but methods for its improvement are considered.
|
eng_Latn
| 132,020 |
Boundedness of solutions of difference equations and application to numerical solution of Volterra integral equations of the second kind
|
Abstract We study the difference equations obtained when some numerical methods for Volterra integral equations of the second kind are applied to the linear test problem y(t) = 1 + ∝0t (λ + μt + vs) y(s) ds, t ⩾ 0, with fixed stepsize h. The resulting difference equations are of Poincare type and we formulate a criterion for boundedness of solutions of these equations if the associated characteristic polynomial is a simple von Neumann polynomial. This result is then used in stability analysis of reducible quadrature methods for Volterra integral equations.
|
We consider the Cauchy problem for the Korteweg-de Vries equation driven by a cylindrical fractional Brownian motion (fBm) in this paper. With Hurst parameter $H\geq\frac{7}{16}$ of the fBm, we obtain the local existence results with initial value in classical Sobolev spaces $H^s$ with $s\geq -\frac{9}{16}$. Furthermore, we give the relation between the Hurst parameter $H$ and the index $s$ to the Sobolev spaces $H^s$, which finds out the regularity between the driven term fBm and the initial value for the stochastic Korteweg-de Vries equation.
|
eng_Latn
| 132,022 |
A nonparametric regression cross spectrum for multivariate time series
|
We consider dependence structures in multivariate time series that are characterized by deterministic trends. Results from spectral analysis for stationary processes are extended to deterministic trend functions. A regression cross covariance and spectrum are defined. Estimation of these quantities is based on wavelet thresholding. The method is illustrated by a simulated example and a three-dimensional time series consisting of ECG, blood pressure and cardiac stroke volume measurements.
|
Abstract We study a general nonlinear elliptic equation in the Orlicz setting with data not belonging to the dual of the energy space. We provide several Lorentz-type and Morrey-type estimates for the gradients of solutions under various conditions on the data.
|
eng_Latn
| 132,027 |
A comparison of Gaussian and Fourier methods for degenerate diffusions on SE(2)
|
Degenerate diffusions on the special Euclidean group of the plane arise in a number of applications in filtering theory such as the construction of dead-reckoning priors in nonholonomic mobile robot pose estimation, and in inpainting and stochastic completion in the study of visual perception. Two very different solution methodologies have been pursued in the literature: (1) Gaussian distributions in exponential coordinates for very concentrated probability densities; (2) noncommutative Fourier expansions for very distributed probability densities. Here we compare and contrast these methodologies and examine the range over which they provide comparable answers and quantitatively analyze when one should be used over the other.
|
Abstract The paper is concerned with a reduced SIR model for migrant workers. By using differential inequality technique and a novel argument, we derive a set of conditions to ensure that the endemic equilibrium of the model is globally exponentially stable. The obtained results complement with some existing ones. We also use numerical simulations to demonstrate the theoretical results.
|
eng_Latn
| 132,029 |
A further note on the bivariate normal distribution
|
It is indicated to what extent the conditional normality of the distribution of one comnonent of a bivariate random vector given the value of the other component together with a restricted type of conditional normality or the marginal normality for the other component is equivalent to the bivariate normality of this random vector.
|
In this paper we are interested in multiplicity results for a nonlinear Dirichlet boundary value problem subject to perturbations of impulsive terms. The study of the problem is based on the variational methods and critical point theory. Infinitely many solutions follow from a recent variational result.
|
eng_Latn
| 132,034 |
${\mathcal F}$-Hypercyclic operators on Fr\' echet spaces
|
In this paper, we investigate ${\mathcal F}$-hypercyclicity of linear, not necessarily continuous, operators on Fr\' echet spaces. The notion of lower $(m_{n})$-hypercyclicity seems to be new and not considered elsewhere even for linear continuous operators acting on Fr\' echet spaces. We pay special attention to the study of $q$-frequent hypercyclicity, where $q\geq 1$ is an arbitrary real number. We present several new concepts and results for lower and upper densities in a separate section, providing also a great number of illustrative examples and open problems.
|
To apply continuation of potential field in spatial domain,Fredholm integral equation of the first kind has to be solved numerically.Because the coefficient matrix that comes from discretizing integral equation is not sparse and has very large scale,it requires large computer memory to save the matrix,and operation on it consumes very long time.The continuation method in spatial domain is not developed in practice.In this paper,based on the analysis of structure of coefficient matrix,we find an important fact that the coefficient matrix is a symmetric,block Toeplitz type matrix.A mathematical proof is given in the paper.By using fast algorithm that already exists to solve block Toeplitz system,we realize spatial domain upward continuation and downward continuation.Model data and aeromagnetic data test shows the feasibility and correctness of spatial continuation of potential field.
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eng_Latn
| 132,035 |
Monotone Stochastic Order of Processes with Independent Increments
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In this article we study monotone stochastic orders for real-valued processes with independent increments and derive sufficient deterministic conditions which are easy to verify and suitable for applications. Our proof is based on an explicit construction of a coupling. We also derive comparison results for L\'evy processes and semimartingales with conditionally independent increments.
|
We are considering sequences P1, P2,... of (mechanistic) price indices, where Pn+1 is a price index which depends on the 4n (base time and comparison time) quantities and prices of the price index Pn and, in addition, on the 4 (base time and comparison time) quantities and prices of a (n+1)th commodity. Without any differentiability or continuity assumption it is being shown that a system of three very weak axioms on the P’s together with a rather generally looking extension rule that connects Pn+1 with Pn yields sequences whose terms depend only on the price ratios pi/p i O , where p i O is the base price and pi is the current price of commodity i.
|
eng_Latn
| 132,044 |
Entrance laws for positive self-similar Markov processes
|
In this paper we propose an alternative construction of the self-similar entrance laws for positive self-similar Markov processes. The study of entrance laws has been carried out in previous papers using different techniques, depending on whether the process hits zero in a finite time almost surely or not. The technique here used allows to obtain the entrance laws in a unified way. Besides, we show that in the case where the process hits zero in a finite time, if there exists a self-similar entrance law, then there are infinitely many, but they can all be embedded into a single one. We propose a pathwise extension of this embedding for self-similar Markov processes. We apply the same technique to construct entrance law for other types self-similar processes.
|
We consider a mass-conservative fragmentation of the unit interval. The main purpose of this work is to specify the Hausdorff dimension of the set of locations having exactly an exponential decay. The study relies on an additive martingale which arises naturally in this setting, and a class of Levy process constrained to stay in a finite interval.
|
eng_Latn
| 132,048 |
Exact and Numerical Inversion of Pseudo-differential Operators and Applications to Signal Processing
|
A large class of time-varying filters can be described via pseudo-differential operators belonging to the Hormander class OPS 0 0 , 0. The questions whether and how an input signal can be reconstructed from a known output lead to the problems of invertibility of pseudo-differential operators in that class and of (at least, numerical) solution of pseudo-differential equations. We are going to derive effective conditions for the invertibility for pseudo-differential operators with globally slowly varying symbols as well as for causal pseudo-differential operators, and we study the stability of the finite sections method with respect to time and frequency for these operators.
|
Abstract In this paper, we obtain the distribution of mixed sum of two independent random variables with different probability density functions. One with probability density function defined in finite range and the other with probability density function defined in infinite range and associated with product of Srivastava's polynomials and H-function. We use the Laplace transform and its inverse to obtain our main result. The result obtained here is quite general in nature and is capable of yielding a large number of corresponding new and known results merely by specializing the parameters involved therein. To illustrate, some special cases of our main result are also given.
|
eng_Latn
| 132,052 |
The moments for q-Bernstein operators in the case 0 < q < 1
|
In this note we give the estimates of the central moments for q-Bernstein operators (0 < q < 1) which can be used for studying the approximation properties of the operators.
|
The main objective of this article is to study dynamic of the ::: three-dimensional Boussinesq equations with the periodic boundary ::: condition.We prove that when the Rayleigh number $R$ crosses the ::: first critical Rayleigh number $R_c$, the Rayleigh-Benard problem ::: bifurcates from the basic state to an global attractor $\Sigma$, which is homeomorphic to $S^3$.
|
eng_Latn
| 132,077 |
Even the first iterate of a Markov operator is contracting in anL2 norm
|
A weightedL2 norm is introduced in which Markov operators, e.g., associated with noisy maps, are contracting provided the kernel (i.e., the transitional distribution) is smooth enough. This results in strong relaxational properties of noisy maps. Similar to this norm, integral functionals appear useful when studying spatiotemporal chaos and random fields.
|
Let X and Y be two inflnite dimensional real or complex Banach spaces. In this note we determine the forms of surjective additive maps ` : L(X) ! L(Y ) preserving the kernel's dimension or the range's codimension. As consequence, we establish that ` : L(X) ! L(X) preserves the kernel (respectively, the range) if and only if there exists an invertible operator A 2 L(X) such that `(T) = AT (respectively, `(T) = TA) for all T 2 L(X).
|
eng_Latn
| 132,079 |
Generalized fountain theorem and application to strongly indefinite semilinear problems
|
Abstract By using the degree theory and the τ -topology of Kryszewski and Szulkin, we establish a version of the Fountain Theorem for strongly indefinite functionals. The abstract result will be applied for studying the existence of infinitely many solutions of two strongly indefinite semilinear problems including the semilinear Schrodinger equation.
|
In this paper, we obtain a $\alpha$-Suzuki fixed point theorem by using $C$ - class function on quasi metric spaces. Also we give an example which supports our main theorem.
|
eng_Latn
| 132,083 |
A Note on Interpolation Functions of the Frobenious‐Euler Numbers
|
The main purpose of this paper is to construct partial twisted zeta‐type function, which interpolates q‐generalized Frobenius‐Euler numbers and twisted q‐generalized Frobenius‐Euler numbers. We give some applications related to this function.
|
We consider a mass-conservative fragmentation of the unit interval. The main purpose of this work is to specify the Hausdorff dimension of the set of locations having exactly an exponential decay. The study relies on an additive martingale which arises naturally in this setting, and a class of Levy process constrained to stay in a finite interval.
|
eng_Latn
| 132,090 |
On the Exact Distributions of the Individual Roots of the Complex Wishart and Multivariate Beta Matrices.
|
Abstract : In this report, the authors give tables for the exact percentage points of the individual roots of the complex Wishart and multivariate beta matrices. The applications of these tables in the area of the inference on multiple time series are also discussed. (Author)
|
In this paper, we study the Dirichlet problem for a singular Monge-Ampere type equation on unbounded domains. For a few special kinds of unbounded convex domains,we find the explicit formulas of the solutions to the problem. For general unbounded convex domain $\Om$, we prove the existence for solutions to the problem in the space$C^{\infty}(\Om)\cap~C~(\overline{\Om})$. We also obtain the local $C^{\frac{1}{2}}$-estimate up to the $\partial~\Omega$ and the estimate for the lower bound of the solutions.
|
eng_Latn
| 132,091 |
Partial compactness for Landau-Lifshitz maxwell equation in two-dimension
|
Abstract We study the partial regularity of weak solutions to the 2-dimensional Landau-Lifshitz equations coupled with time dependent Maxwell equations by Ginzburg-Landau type approximation. Outside an energy concentration set of locally finite 2-dimensional parabolic Hausdorff measure, we prove the uniform local C infin bounds for the approaching solutions and then extract a subsequence converging to a global weak solution of the Landau-Lifshitz-Maxwell equations which are smooth away from finitely many points.
|
A weightedL2 norm is introduced in which Markov operators, e.g., associated with noisy maps, are contracting provided the kernel (i.e., the transitional distribution) is smooth enough. This results in strong relaxational properties of noisy maps. Similar to this norm, integral functionals appear useful when studying spatiotemporal chaos and random fields.
|
eng_Latn
| 132,094 |
On the decay of fragments in homogeneous fragmentations
|
We consider a mass-conservative fragmentation of the unit interval. The main purpose of this work is to specify the Hausdorff dimension of the set of locations having exactly an exponential decay. The study relies on an additive martingale which arises naturally in this setting, and a class of Levy process constrained to stay in a finite interval.
|
Through defining the conceptions of minimal closed chain of q dimensions and fundamental closed chain of q dimensions and index of fundamental closed chain and rank of system of fundamental closed chains and others,the structure of homology group with integral coefficients is described in detail.This description offers an easy method on computing homology group with integral coefficients.\;
|
eng_Latn
| 132,100 |
Uniformly stable explicitly solvable finite difference method for fractional diffusion equations
|
A finite difference scheme for the one-dimensional space fractional diffusion equation is presented and analysed. The scheme is constructed by modifying the shifted Grunwald approximation to the spatial fractional derivative and using an asymmetric discretisation technique. By calculating the unknowns in differential nodal point sequences at the odd and even time levels, the discrete solution of the scheme can be obtained explicitly. We prove that the scheme is uniformly stable. The error between the discrete solution and the analytical solution in the discrete l 2 norm is optimal in some cases. Numerical results for several examples are consistent with the theoretical analysis.
|
In this paper, we study the asymptotical optimal solutions for the general airline revenue management problem, considering both customer cancelations and no-shows. We study a simple case where there is only one fare-class; the management controls the opening and closing of the fare-class, with the objective of maximizing the total revenue. We first develop a fluid control problem, where the customer arrival and cancelation processes are treated as deterministic, whereas the no. of no-shows is random. The optimal fluid solution is shown to have a simple structure of accepting up to a single time point t* and rejecting afterwards. We show that this policy acts as an upper bound for the MDP problem. Applying the optimal fluid solution to the stochastic environment, we show that this policy is asymptotically optimal on the fluid scaling.
|
eng_Latn
| 132,104 |
Heisenberg uniqueness pairs for the measure supported on the finite parallel lines
|
A Heisenberg uniqueness pair is a pair $\left(\Gamma, \Lambda\right)$, where $\Gamma$ is a smooth curve or a finite disjoint union of smooth curves and $\Lambda\subset\mathbb R^2$ is such that any finite Borel measure $\mu$ with support on $\Gamma$ and absolutely continuous with respect to the arc length of $\Gamma$ for which Fourier transform $\hat\mu\vert_\Lambda=0,$ implies $\mu=0.$ In this article, we find a characterization of the Heisenberg uniqueness pairs corresponding to finite number of parallel lines. In the latter case, we observe a phenomenon of interlacing of finite number of dispensable sets.
|
We describe preliminary results from an effort to quantify the uncertainties in parton distribution functions and the resulting uncertainties in predicted physical quantities. The production cross section of the $W$ boson is given as a first example. Constraints due to the full data sets of the CTEQ global analysis are used in this study. Two complementary approaches, based on the Hessian and the Lagrange multiplier method respectively, are outlined. We discuss issues on obtaining meaningful uncertainty estimates that include the effect of correlated experimental systematic uncertainties and illustrate them with detailed calculations using one set of precision DIS data.
|
eng_Latn
| 132,112 |
On solid ergodicity for Gaussian actions
|
We investigate Gaussian actions through the study of their crossed-product von Neumann algebra. The motivational result is Chifan and Ioanaʼs ergodic decomposition theorem for Bernoulli actions (Chifan and Ioana, 2010 [4]) that we generalize to Gaussian actions (Theorem A). We also give general structural results (Theorems 3.4 and 3.8) that allow us to get a more accurate result at the level of von Neumann algebras. More precisely, for a large class of Gaussian actions Γ↷X, we show that any subfactor N of L∞(X)⋊Γ containing L∞(X) is either hyperfinite or is non-Gamma and prime. At the end of the article, we show a similar result for Bogoliubov actions.
|
Abstract The aim of the present paper is to give the main characteristics of the finite-source G / M /r queue in equilibrium. Here unit i stays in the source for a random time having general distribution function F i ( x ) with density f i ( x ). The service times of all units are assumed to be identically and exponentially distributed random variables with means 1/μ. It is shown that the solution to this G / M /r model is similar in most important respects to that for the M/M/ r model.
|
eng_Latn
| 132,129 |
Some optimal dividend problems for a surplus process with interest
|
We derive some results on the dividend payments prior to ruin in the classical surplus process with interest.An integro-differential equation with a boundary conditions satisfied by the expected present value of dividend payments is derived and solved.Furthermore,we derive an integro-differential equation for the moment generating function,through which we analyze the higher moment of the present value of dividend payments.Finally,closed-form expressions for exponential claims are given.
|
In this paper, we study the Dirichlet problem for a singular Monge-Ampere type equation on unbounded domains. For a few special kinds of unbounded convex domains,we find the explicit formulas of the solutions to the problem. For general unbounded convex domain $\Om$, we prove the existence for solutions to the problem in the space$C^{\infty}(\Om)\cap~C~(\overline{\Om})$. We also obtain the local $C^{\frac{1}{2}}$-estimate up to the $\partial~\Omega$ and the estimate for the lower bound of the solutions.
|
eng_Latn
| 132,134 |
Liouville equation and the q-statistical formalism
|
We revisit some aspects of the foundations of the q-non-extensive thermostatistical formalism, which are particularly relevant to its astronomical applications. We analyse some important features of escort mean values and escort distributions, in connection with the dynamical evolution of ensemble probability distributions associated with the statistical description of general classical dynamical systems. Furthermore, we compare the roles played by escort mean values and escort distributions when studying classical N-body systems at the levels of (i) the Liouville equation and (ii) the Vlasov equation.
|
We study regularity properties of a positive measure in the euclidean space in terms of two square functions which are the multiplicative analogues of the usual martingale square function and of the Lusin area function of a harmonic function. The size of ...
|
eng_Latn
| 132,142 |
Brownian Motion: The LIL and Some Fine-Scale Properties
|
In this chapter, we analyze the growth of the Brownian paths \(t\mapsto B_t\) as \(t\rightarrow \infty \).
|
We study regularity properties of a positive measure in the euclidean space in terms of two square functions which are the multiplicative analogues of the usual martingale square function and of the Lusin area function of a harmonic function. The size of ...
|
eng_Latn
| 132,147 |
Spatial motive mechanism and integrative development mode of Hohhot-Baotou-Ordos region
|
We took the Hohhot-Baotou-Ordos cities group as the study object to analyze the existing status and problems of the Hohhot-Baotou-Ordos region's integrative development,and discuss the spatial motive mechanism and suitable development mode for the Hohhot-Baotou-Ordos region,so that to find out theoretic support,development route,as well as polices and countermeasures etc for the healthy integrative development of the Hohhot-Baotou-Ordos region,and expedite the economic development of the Hohhot-Baotou-Ordos region,so that to more efficiently promote the spatial development of the surrounding districts and boost the process of regional development and planning of our country.
|
We deal with linear parabolic (in the sense ::: of Petrovskii) systems of order $2b$ with discontinuous principal ::: coefficients. A priori estimates in Sobolev and ::: Sobolev--Morrey spaces are proved for the strong solutions by ::: means of potential analysis and boundedness of certain singular ::: integral operators with kernels of mixed homogeneity. As a ::: byproduct, precise characterization of the Morrey, $BMO$ and ::: Holder regularity is given for the solutions and their ::: derivatives up to order $2b-1.$
|
eng_Latn
| 132,156 |
Multiplicative Square Functions
|
We study regularity properties of a positive measure in the euclidean space in terms of two square functions which are the multiplicative analogues of the usual martingale square function and of the Lusin area function of a harmonic function. The size of ...
|
In this communication we show that Fulinski-Kramarczyk master equation is valid for time-dependent projection operator. Thus, this equation is more general than the one proposed by Shibata and Hashitsume because no special assumption on the form of the projector is made.
|
eng_Latn
| 132,158 |
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