scholarly journals Amenability, extreme amenability, model-theoretic stability, and dependence property in integral logic

2016 ◽  
pp. 1-34
Author(s):  
Karim Khanaki
Keyword(s):  
Dependence Property

Corruption as a factor that hampers the socialization of the economy

2020 ◽  
pp. 112-119
Author(s):  
Olga B. Lemeshonok ◽  
Keyword(s):  
Institutional Environment ◽  
Economic Systems ◽  
New Production ◽  
The Public ◽  
Corruption Perception ◽  
Relations Of Power ◽  
Innovative Orientation ◽  
Power And Dependence ◽  
Dependence Property

The author investigates comparisons of the corruption prevalence in countries with different economic systems based on the regularly calculated corruption perception index. The essence of corruption interactions in an economy is revealed through relations of power and dependence, property distribution and related economic actors behavior. The article shows a role of the institutional environment in corruption expanding or reducing, its connection with the development of civil society and the processes of economy socialization. The influence of corruption on certain aspects of economy socialization is specified: social differentiation, innovative orientation of production development, macroeconomic stability, development of the institutional environment, efficiency of the public administration system, property allocation efficiency, general humanization of activities and the human capital quality associated with these processes. The author shows how corruption relations affect individual aspects of socialization of the economy, considers the potential and prospects of noonomy and the NIS’s new economy in the processes of reducing corruption and strengthening the foundations of socialization. Micro- and macroaspects of the formation of a new human with his needs structure and new production corresponding to these needs are separately noted.

Mixture copulas and insurance applications

2018 ◽  
Vol 12 (2) ◽  
pp. 391-411
Author(s):  
Maissa Tamraz
Keyword(s):  
Joint Distribution ◽  
Stable Distribution ◽  
Random Variable ◽  
Fixed Time ◽  
Collective Model ◽  
Data Sets ◽  
New Model ◽  
Time Period ◽  
Insurance Data ◽  
Dependence Property

AbstractIn the classical collective model over a fixed time period of two insurance portfolios, we are interested, in this contribution, in the models that relate to the joint distributionFof the largest claim amounts observed in both insurance portfolios. Specifically, we consider the tractable model where the claim counting random variableNfollows a discrete-stable distribution with parameters (α,λ). We investigate the dependence property ofFwith respect to both parametersαandλ. Furthermore, we present several applications of the new model to concrete insurance data sets and assess the fit of our new model with respect to other models already considered in some recent contributions. We can see that our model performs well with respect to most data sets.

On uniform conditional stochastic order conditioned on planar regions

1990 ◽  
Vol 27 (01) ◽  
pp. 115-123
Author(s):  
J. George Shanthikumar ◽  
Hui-Wen Koo
Keyword(s):  
Stochastic Order ◽  
Sufficient Conditions ◽  
Negative Dependence ◽  
Random Vectors ◽  
Natural Classification ◽  
Planar Regions ◽  
Dependence Property

Sufficient conditions under which two random vectors are ordered in the sense of uniform conditional stochastic order (Whitt (1980), (1982)) with respect to planar regions are given. A natural classification of distributions based on this notion of stochastic order is defined and studied. A negative dependence property of Block et al. (1985) is shown to hold for this class of distributions. An application of these results in statistics is also presented.

scholarly journals Fractional Poisson Process: Long-Range Dependence and Applications in Ruin Theory

2014 ◽  
Vol 51 (3) ◽  
pp. 727-740 ◽  
Author(s):  
Romain Biard ◽  
Bruno Saussereau
Keyword(s):  
Poisson Process ◽  
Long Range ◽  
Risk Model ◽  
Nonstationary Process ◽  
Long Range Dependence ◽  
Insurance Company ◽  
Surplus Process ◽  
Fractional Poisson Process ◽  
Renewal Risk ◽  
Dependence Property

We study a renewal risk model in which the surplus process of the insurance company is modelled by a compound fractional Poisson process. We establish the long-range dependence property of this nonstationary process. Some results for ruin probabilities are presented under various assumptions on the distribution of the claim sizes.

scholarly journals Behaviour of multivariate tail dependence coefficients

2019 ◽  
Vol 22 (2) ◽  
pp. 299-310
Author(s):  
Gaida Pettere ◽  
Irina Voronova ◽  
Ilze Zariņa
Keyword(s):  
Risk Assessment ◽  
Simulation Experiment ◽  
Tail Dependence ◽  
Solvency Ii ◽  
Lower Tail ◽  
Alternative Method ◽  
T Copula ◽  
Dependence Property ◽  
Multivariate T ◽  
Tail Dependence Coefficient

In applications tail dependence is an important property of a copula. Bivariate tail dependence is investigated in many papers, but multivariate tail dependence has not been studied widely. We define multivariate upper and lower tail dependence coefficients as limits of the probability that values of one marginal will be large if at least one of other marginals will be as large also. Further we derive some relations between introduced tail dependence and bivariate tail dependence coefficients. Applications have shown that the multivariate t-copula has been successfully used in practice because of its tail dependence property. Therefore, t-copula can be used as an alternative method for risk assessment under Solvency II for insurance models. We have paid attention to the properties of the introduced multivariate tail dependence coefficient for t-copula and examine it in the simulation experiment.

On uniform conditional stochastic order conditioned on planar regions

1990 ◽  
Vol 27 (1) ◽  
pp. 115-123 ◽  
Author(s):  
J. George Shanthikumar ◽  
Hui-Wen Koo
Keyword(s):  
Stochastic Order ◽  
Sufficient Conditions ◽  
Negative Dependence ◽  
Random Vectors ◽  
Natural Classification ◽  
Planar Regions ◽  
Dependence Property

Sufficient conditions under which two random vectors are ordered in the sense of uniform conditional stochastic order (Whitt (1980), (1982)) with respect to planar regions are given. A natural classification of distributions based on this notion of stochastic order is defined and studied. A negative dependence property of Block et al. (1985) is shown to hold for this class of distributions. An application of these results in statistics is also presented.

Reliability analysis of distributed storage systems considering data loss and theft

2019 ◽  
Vol 234 (2) ◽  
pp. 303-321
Author(s):  
Heping Jia ◽  
Rui Peng ◽  
Yi Ding ◽  
Changzheng Shao
Keyword(s):  
System Reliability ◽  
Storage Systems ◽  
Distributed Storage ◽  
System Structure ◽  
Time To Failure ◽  
Data Loss ◽  
Exponential Distributions ◽  
Basic Model ◽  
Distributed Storage Systems ◽  
Dependence Property

With the advancement of cloud computing and internet of things, data are usually stored on distributed computers and these data may risk being lost or stolen. In this article, we consider a common case where the entirety of the data is partitioned into several parts and each data part can be allocated to one or more computers. In the case where a computer fails, all the data parts on it are lost. Before the failure of any computer, the data parts may also be stolen by hackers. The basic model of computer failure and computer intrusion resulting in the theft of all the data parts on the computer is considered first. Then, the case is extended to a general model where computer failure, as well as data part corruption and theft caused by hacking are embedded. It is essential to study the reliability of distributed storage systems considering both data loss and data theft, which can be a basis for decision making on system structure optimization. In this article, a multi-valued decision diagram–based approach is developed to quantitatively evaluate system reliability for both models considering the time-dependence property of sequential events. The proposed method is applicable to systems where the random time to failure, theft, or corruption follows arbitrary distributions including the commonly used exponential distributions. Illustrative examples are provided to validate the proposed method.

scholarly journals The dielectric and ferroelectric properties of (Ba0.5Sr0.5)TiO3-doped (Bi0.5Na0.5)TiO3 lead-free ceramics

2017 ◽  
Vol 07 (04) ◽  
pp. 1750028 ◽  
Author(s):  
Guoliang Xue ◽  
Qiankun Wu ◽  
Gang Li ◽  
Huaizhou Lin ◽  
Gang Liu ◽  
...  
Keyword(s):  
Ferroelectric Properties ◽  
Low Frequency ◽  
Hysteresis Loops ◽  
Lead Free ◽  
Lead Free Ceramics ◽  
Average Grain Size ◽  
Polarization Electric Field ◽  
Diffused Phase Transition ◽  
Dependence Property ◽  
Stable Solid Solution

This work prepares (Ba[Formula: see text]Sr[Formula: see text])TiO3 (BST)-doped (Bi[Formula: see text]Na[Formula: see text])TiO3 (NBT) lead free ceramics through conventional solid reaction method and analyzes the doping effect of BST on phases, microstructure, dielectric and ferroelectric properties. The phase and structure of the NBT-BST ceramics were investigated through X-ray diffractometer (XRD) and Raman. The XRD results showed that BST has diffused into the NBT lattices to form a stable solid solution; while, Raman spectrum showed the bands at low frequency are different with that of pure NBT and divided into two ranges around 247[Formula: see text]cm[Formula: see text] and 303[Formula: see text]cm[Formula: see text]. Relative dense and homogeneous ceramic microstructures could be achieved, with the observation of a slight decrease in average grain size with the increase of BST doping content. The dielectric and ferroelectric properties were also investigated. The dielectric constant increases gradually with increasing the temperature to [Formula: see text], and then decrease. The temperature dependence property showed diffused phase transition near [Formula: see text]. The polarization-electric field ([Formula: see text]-[Formula: see text]) hysteresis loops of BST-doped NBT ceramics showed typical ferroelectric or relaxor nature. Both the [Formula: see text] and [Formula: see text] increased first, then decreased with respect to the increase of the BST content.

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