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Issue Info: 
  • Year: 

    2016
  • Volume: 

    2
Measures: 
  • Views: 

    201
  • Downloads: 

    148
Abstract: 

IN THIS NOTE, TWO NEW STOCHASTIC ORDERS ARE DEFINED BASED ON QUANTILE FUNCTION INREVERSED TIME. WE DEFINE REVERSE HAZARD QUANTILE ORDER AND REVERSE MEAN RESIDUALQUANTILE ORDER AND DERIVE SOME RELATIONSHIP BETWEEN THIS ORDERS AND SOME OTHER ORDERSOF DISTRIBUTION. ALSO, A CHARACTERIZATION OF DECREASING REVERSE HAZARD QUANTILE CLASS ISPRESENTED.

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Author(s): 

Pakgohar Alireza

Issue Info: 
  • Year: 

    2024
  • Volume: 

    5
  • Issue: 

    1
  • Pages: 

    165-180
Measures: 
  • Citations: 

    0
  • Views: 

    6
  • Downloads: 

    0
Abstract: 

The Burr Type III distribution‎, ‎also known as the Singh-Maddala distribution‎, ‎is a versatile probability distribution widely used in various fields such as hydrology‎, ‎finance‎, ‎reliability engineering‎, ‎and actuarial science‎. ‎This paper explores the Burr Type III distribution‎, ‎discussing its properties‎, ‎moment calculations‎, ‎stochastic orders‎, ‎and entropy measures tailored for this distribution.

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Issue Info: 
  • Year: 

    2021
  • Volume: 

    20
  • Issue: 

    1
  • Pages: 

    269-287
Measures: 
  • Citations: 

    0
  • Views: 

    25
  • Downloads: 

    3
Abstract: 

In the literature on Statistical Reliability Theory and Stochastic Orders, several results based on theory of TP < sub>2/RR2 functions have been extensively used in establishing various properties. In this paper, we provide a review of some useful results in this direction and highlight connections between them.

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Issue Info: 
  • Year: 

    2019
  • Volume: 

    16
  • Issue: 

    1
  • Pages: 

    143-163
Measures: 
  • Citations: 

    0
  • Views: 

    99
  • Downloads: 

    0
Abstract: 

In this paper, we obtain some results on preservation properties of the moment-generating-function and Laplace transform orders under the taking of random minima and maxima. Also, the reversed preservation of these stochastic orders is studied. In following, we investigate the closure of some new certain aging classes under the random minima and maxima.

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Journal: 

WORLD POLITICS

Issue Info: 
  • Year: 

    2019
  • Volume: 

    8
  • Issue: 

    3 (29)
  • Pages: 

    7-32
Measures: 
  • Citations: 

    0
  • Views: 

    454
  • Downloads: 

    0
Abstract: 

Systemic change is the most critical development in the current international politics. China can be regarded as a key player in this ongoing change. The authors aim to investigate the Chinese approach to international orders. The authers assume that there are three overlapping international orders including hegemonic, constitutional and balance of power. The main question is that how China sees these international orders and how it reacts strategically. The article hypothesizes that Chinese opposition to hegemonic order, increasing role in the balance of power and revisionist approach and parallel institution-building in constitutional order are three inter-related elements of Chinese global strategy. The finding of the article shows that rather than sticking to some cliché s such as challenger or revisionist, it is more beneficial to view China as an actor simultaneously challenging the hegemonic order, seeking security in the balance of power and making order in constitutional order. The article can open a new pathway for viewing rising international players with alternative approach.

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Author(s): 

BATEN A. | HOSSAIN I.

Issue Info: 
  • Year: 

    2014
  • Volume: 

    16
  • Issue: 

    3
  • Pages: 

    481-496
Measures: 
  • Citations: 

    0
  • Views: 

    980
  • Downloads: 

    350
Abstract: 

Efficiency in agricultural production is indicative of the efficiency level of farm households in their farming activities. Farmers in developing countries do not make use of all the potential technological resources, thus making inefficient decisions in their agricultural activities. Herein, technical efficiency in relation with the production of three types of rice crop (Boro, Aus and Aman) was evaluated, with some determinants of technical efficiency identified, in Bangladesh. It was attempted, throughout this study, to access the status of technical efficiency in rice production in Bangladesh for panel data while using the Stochastic Frontier Production Model with either of truncated normal or half-normal distributional assumptions. Both time-variant and time-invariant inefficiency effects models were estimated, one at a time. Collected data from agricultural sector pertaining to three main rice crops in Bangladesh for the period of 1980 to 2008 were made used of throughout the study. The results revealed that technical efficiency gradually increased over the reference period with the half normal distribution being found preferable to the truncated normal distribution as regards the technical inefficiency effects. The value of technical efficiency was found high for Boro rice while low for Aus in comparison with Aman rice in Bangladesh for both distributions in either of time-variant or invariant ones. It was observed that the most efficient rice production system has occurred for the case of Boro with a technical efficiency of 0.98. Year wise mean technical efficiency increased during the reference time periods.

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Issue Info: 
  • Year: 

    2024
  • Volume: 

    13
  • Issue: 

    1
  • Pages: 

    31-40
Measures: 
  • Citations: 

    0
  • Views: 

    22
  • Downloads: 

    7
Abstract: 

In this paper, we give a method for the constructions of Hadamard matrices of composite orders by using suitable $T$-matrices and known Hadamard matrices. We establish a formula for $T$-matrices and Hadamard matrices and discuss under what condition we can get $T$-matrices from the known Hadamard matrices.

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Issue Info: 
  • Year: 

    2019
  • Volume: 

    16
  • Issue: 

    6
  • Pages: 

    127-141
Measures: 
  • Citations: 

    0
  • Views: 

    339
  • Downloads: 

    115
Abstract: 

In this paper, the orders induced by the residual implications obtained from uninorms are investigated. A necessary and suficient condition is presented so that the ordinal sum of fuzzy implications satisfies the law of importation with a t-norm T. Some relationships between the orders induced by an ordinal sum implication and its summands are determined. The algebraic structures obtained from the orders induced by the residual implications and the ordinal sum implications are discussed.

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Issue Info: 
  • Year: 

    2016
  • Volume: 

    2
Measures: 
  • Views: 

    196
  • Downloads: 

    81
Abstract: 

IN THIS PAPER, WE CONSIDER A COHERENT SYSTEM OF N COMPONENTS AND N ACTIVE SPARES.THEN, WE INVESTIGATE STOCHASTIC COMPARISONS OF THE LIFETIMES OF SERIES-PARALLEL SYSTEMSAND DISCUSS THAT COMPONENT REDUNDANCY OFFER GREATER RELIABILITY THAN THE SYSTEM REDUNDANCY WITH RESPECT TO THE HAZARD RATE ORDER AND THE REVERSED HAZARD RATE ORDERFOR TWO SCENARIOS, MATCHING SPARES AND NON-MATCHING SPARES.

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Author(s): 

Toomaj A.

Issue Info: 
  • Year: 

    2024
  • Volume: 

    18
  • Issue: 

    1
  • Pages: 

    39-56
Measures: 
  • Citations: 

    0
  • Views: 

    10
  • Downloads: 

    0
Abstract: 

In this paper, the entropy characteristics of the lifetime of coherent systems are investigated using the concept of system signature. The results are based on the assumption that the lifetime distribution of system components is independent and identically distributed. In particular, a formula for calculating the Tsallis entropy of a coherent system's lifetime is presented, which is used to compare systems with the same characteristics. Also, bounds for the lifetime Tsallis entropy of coherent systems are presented. These bounds are especially useful when the system has many components or a complex structure. Finally, a criterion for selecting the preferred system among coherent systems based on the relative Tsallis entropy is presented.

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