Search

All products or systems that we use in daily life, degrade in time so, they ultimately fail. It is very crucial for manufacturers to forecast the reasons of the failures before. With that perspective reliability analysis is carried out to determine the potential lifetime of products. Failure time's distribution is the basis of the reliability analysis. While determining the proper distribution, some statistical methods can be used. Cumulative distribution, reliability function, hazard function, mean residual life, variance residual life are most common tools to determine proper distribution in reliability analysis. At the same time failure distributions can be characterized by using relations between these functions. Pearson Differantial Equation System includes many distributions which are also used in reliability analysis commonly. Because of this it plays a very important role in reliability analysis. In this study, Pearson Differantial Equation System's cubic denominator structure which derives asymmetric distribution will be handled. Then conditional moments and asymmetry measures will be analysed for that structure. [ABSTRACT FROM AUTHOR]

Seeking clues for sustainable energy future, this paper focuses on the social dimension of renewable energy developments. It aims to gain insight into this dimension and to clarify its significance. With this purpose, it reviews the general understandings, key assumptions and the different views in the relevant literature, on the basis of two main themes: local opposition and participation. While doing this, it adopts a view that renewable energy developments should be promoted without sacrificing the social pillar of sustainable development. In order to achieve socially acceptable solutions and transition to sustainable society, such a view points to a need for understanding social context of renewable energies and searching for more democratic and fair processes, and above all, a change in the dominant policy paradigms. The "what?" and "how?" questions in the context of our country necessitates further research on the social and policy dimensions of renewable energy. Since the subject has not been adequately addressed yet, this paper is considered to serve as a reference and to open up a new research field. [ABSTRACT FROM AUTHOR]

In this article, the factors effecting the housing and spatial preferences of individuals living in the 'site' developments in Ankara are examined. In that context, it is focused on the mobility from the neighborhoods in central Ankara towards the new developments in the new growth areas, in terms of its relationship to the individual preferences. In the analysis of these preferences, Pierre Bourdieu's concept of cultural capital as defined in his Theory of Capital was utilized. The data for this research was collected through in-dept interviews conducted in two main development projects in Ankara, namely Or-An Sitesi and Koru Sitesi. The analysis of data shows the significant effect of cultural capital accumulated throughout the individuals' lives. On the other hand, the differentiation of preferences and socio-spatial relations between the residents of these two places reveals the fact that this process of mobility to live in 'site' developments is not a homogenous phenomenon as widely discussed. On the contrary, it is affected by the differentiation in cultural capital accumulations and lead to different perceptions and practices. [ABSTRACT FROM AUTHOR]

In social psychology, the bystander effect, defined as a social dilemma, is related to the probability of help to a victim by the mere presence of others. This dilemma has been generally assumed, by game theoreticians and experimental economists, to represent the same social phenomenon as the volunteer's dilemma. In this paper, we analyze these two different social dilemmas and the main question of the article is whether these two different social dilemmas represent the same social state. We first provide a broad literature review, and discuss the game theoretical foundation of the volunteer's dilemma. Then, we provide an alternative theoretical explanation for the bystander effect and discuss the differences between these two social states. [ABSTRACT FROM AUTHOR]