ELAS8 - Computer program for linear structure equilibrium problems

Program generates and solves governing equations for unknown deflection of mesh points as if problem were to locate stationary point of total potential function associated with given loading and unknown deflections. Solution is obtained by means of displacement method and finite element technique

Heat Isolators on a Vacuum Flask

The thing which makes the vacuum flask system useful is the vacuum between the two bottles. Producers of the vacuum flask try to create a perfect vacuum between the two bottles, but it is impossible. Little air goes inside, too. This situation creates my experiment and research question. There are many heat isolators so can there be any material that can be more successful in conserving the temperature of the liquid added than the vacuum flask system? To find an answer to my question, I chose 3 heat isolators (perlite, fire brick and silicone) and put them into the flasks instead of the vacuum. In order to investigate their performance and compare with the vacuum flask system, I planned four experiments. I added to the flasks different liquids, water at the different temperature and water at different amounts and measured the temperatures of the added liquids in different times. According to the results from these 4 experiments, I reach to a conclusion that these isolators couldn’t perform a better performance than vacuum in conserving the temperature of the liquid

Proceedings of the Conference on Globalization and Its Discontents

Analyzing two research projects on the industrial home-based work (HBW) in 2003 and 2006 in Istanbul, Turkey, this paper argues that two forms of rigidities shape the organizational characteristics of the HBW: limited physical mobility of the homeworkers and the in-built pressures within the labor process of the factory system. On one hand, the rigidities regarding the mobility of homeworkers determine the conditions of the labor process of the HBW. Among some dimensions of the labor process of HBW, mechanisms for the distribution of piecework, the training of homeworkers, or storage of the piecework are directly related with the physical mobility of homeworkers. On the other hand, the co-existence of labor- and capital-intensive processes in the factory system unavoidably creates management bottlenecks, which account for another form of rigidity. HBW appears as the solution for such management problems. These corresponding rigidities characterize the organizational variety of the HBW. Negative work conditions of the homeworkers such as low piece-wages and precariousness in the employment practices are accounted for by these rigidities. As much as the low piece-wages generally associated with the HBW in the literature. Thus, investigation of the HBW should go beyond the argument about the low piece-wages and start to analyze the actual conditions of organization resulting in the deteriorating conditions of work for homeworkers. The literature emphasizes the centrality of the low piece-wages turning this form of labor into an alternative for the factory system. Although the research projects analyzed in this paper verify this consensus, two forms of rigidities motivate both workers and employers to 'get into the HBW-nexus': Homeworkers shape the organizational arrangements significantly, given that HBW does not pertain to a formal form of employment. Thus, their conditions of physical mobility account for a key element in the organization of HBW. Since the state of mobility by homeworkers is rather one of rigidity than an advantage, their regarding condition should be the focus to understand the mindsets of the homeworkers.mobility of homeworkers, labor market rigidity

Computation of stresses in triangular finite elements

Stress calculations in linear thin shells of aeolotropic material using deflections obtained by finite element metho

On the impact induced stress waves in long bars

Impact induced stress waves in long bars using characteristic method of solutio

On the Survival of Some Unstable Two-Sided Matching Mechanisms

In the 1960s, three types of matching mechanisms were adopted in regional entry-level British medical labor markets to prevent unraveling of contract dates. One of these categories of matching mechanisms failed to prevent unraveling. Roth (1991) showed the instability of that failing category. One of the surviving categories was unstable as well, and Roth concluded that features of the environments of these mechanisms are responsible for their survival. However, Ünver (2001) demonstrated that the successful yet unstable mechanisms performed better in preventing unraveling than the unsuccessful and unstable category in an artificial-adaptive-agent-based economy. In this paper, we conduct a human subject experiment in addition to short- and long-run artificial agent simulations to understand this puzzle. We find that both the unsuccessful and unstable mechanism and the successful and unstable mechanism perform poorly in preventing unraveling in the experiment and in short-run simulations, while long-run simulations support the previous Ünver finding.

Backward Unraveling over Time: The Evolution of Strategic Behavior in the Entry-Level British Medical Labor Markets

This paper studies an adaptive artificial agent model using a genetic algorithm to analyze how a population of decision-makers learns to coordinate on the selection of an equilibrium or a social convention in a two-sided matching game. In the contexts of centralized and decentralized entry-level labor markets, evolution and adjustment paths of unraveling are explored using this model in an environment inspired by the Kagel and Roth (Quarterly Journal of Economics, 2000) experimental study. As an interesting result, it is demonstrated that stability need not be required for the success of a matching mechanism under incomplete information in the long run.Genetic algorithms, linear programming matching, stability, two-sided matching, unraveling