List of Articles زیمر

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  1 - Design and Construction of Simmer Circuit in Order to Drive Flash Lamp in Solid State Laser
  Majid Zamani
  10.30486/teeges.2023.1972034.1047
  In solid state lasers, the light pumping of the laser rod is done by a flash lamp. In order to drive the flash lamp, an electrical power supply consisting of four main parts is used, including the capacitor charging power supply, the trigger circuit, the pulse forming n More

  In solid state lasers, the light pumping of the laser rod is done by a flash lamp. In order to drive the flash lamp, an electrical power supply consisting of four main parts is used, including the capacitor charging power supply, the trigger circuit, the pulse forming network and the simmer circuit. Using the high voltage output of the trigger circuit, the xenon gas inside the flash lamp is ionized. After the trigger action, the main task of the simmer circuit is to generate a low current in order to maintain the ionized state of the flash lamp. Using the simmer mode increases the life of the flash lamp and also significantly reduces electrical and electromagnetic interference. In this article, a new simmer circuit is proposed for driving flash lamp in solid state laser. The presented circuit has been completely designed and then simulated in the PSPICE software environment. After confirming the correctness of its operation, the proposed circuit has been implemented in a laboratory. Circuit simulation results and laboratory results are presented and reported in this article. Manuscript profile
• Open Access Article
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  2 - Applying a fuzzy cooperative bi level programming model for recovering and accompaniment of service failures
  amirhossein Abdolalipour
  In this article, first a two level linear programming problem in which both of production (upper level) and service (lower level) companies maximizes their profits was formulated, and a satisfactory solution satisfying the minimal satisfactory level of the upper level c More

  In this article, first a two level linear programming problem in which both of production (upper level) and service (lower level) companies maximizes their profits was formulated, and a satisfactory solution satisfying the minimal satisfactory level of the upper level company and maximizing the satisfactory degree of lower level company by applying the interactive fuzzy programming for two level linear programming problems to the production and service sectors was developed. Second, formulating a two level linear fractional programming problem in which the two companies maximize the profitability represented by the ratio of profit to sales, the interactive fuzzy programming for two level linear fractional programming problems applied to the profitability maximization problem. From the fact that there exists a possibility that maximization of the profitability would reduce the scale of the business, formulating the problems on production and service as the profit maximization problem is recommended. Through interactive process of the fuzzy programming for two level programming problems, the Production Company and Service Company can attain a satisfactory solution for planning of the production and service workforce assignment. As for the satisfactory (final) solutions, because the upper level specifies the minimal satisfactory level of itself, the characteristics of the upper level company can be seen rather than those of the lower level company. Manuscript profile