نتایج جستجو برای: Truss network system

تعداد نتایج: 2712973  

ژورنال: :علوم و تکنولوژی محیط زیست 0
سعید شفیعی ثابت گروه شیلات، دانشکده شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گلستان*(مسوول مکاتبات) محمد رضا ایمان پور گروه شیلات، دانشکده شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گلستان باقر امینیان فتیده موسسه آموزش عالی علمی- کاربردی علوم و صنایع شیلاتی میرزا کوچک خان رشت، گیلان. سعید گرگین گروه شیلات، دانشکده شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گلستان

زمینه و هدف: در این پژوهش ساختار مورفولوژیک جمعیتی ماهی سفید (rutilus frisii kutum kamenskii, 1901) در سواحل جنوب غربی دریای خزر ناحیه بندرکیاشهر و بندرآستارا با استفاده از truss network system مورد بررسی قرار گرفت. روش بررسی: به این منظور تعداد 315 عدد ماهی سفید طی فصل صید ماهیان استخوانی دریای خزر در سال 87-1386 از سواحل جنوب غربی دریای خزر ناحیه بندرکیاشهر و بندرآستارا به ترتیب توسط شرکت های...

ژورنال: :فصلنامه علوم و تکنولوژی محیط زیست 2015
سعید شفیعی ثابت محمد رضا ایمان پور باقر امینیان فتیده سعید گرگین

زمینه و هدف: در این پژوهش ساختار مورفولوژیک جمعیتی ماهی سفید (rutilus frisii kutum kamenskii, 1901) در سواحل جنوب غربی دریای خزر ناحیه بندرکیاشهر و بندرآستارا با استفاده از truss network system مورد بررسی قرار گرفت. روش بررسی: به این منظور تعداد 315 عدد ماهی سفید طی فصل صید ماهیان استخوانی دریای خزر در سال 87-1386 از سواحل جنوب غربی دریای خزر ناحیه بندرکیاشهر و بندرآستارا به ترتیب توسط شرکت ها...

2005
Shaoze Yan Kai Zheng Yangmin Li

An adaptive truss structure with self-learning active vibration control system is developed. A fuzzy-neural network (FNN) controller with adaptive membership functions is presented. The experimental setup of a two-bay truss structure with active members is constructed, and the FNN controller is applied to vibration suppression of the truss. The controller first senses the output of the accelero...

2008
Rakesh Gupta

The objective of this research was to use a three-dimensional (3D) analysis method to evaluate "system effects" in light-frame roof truss assemblies. The goal of this study was to develop an improved and practical design method for 3D roof truss assemblies used in residential construction. A truss plate manufacturer (TPM) design software was used to layout assemblies and to design individual tr...

Knowledge on the fish species is important in habitat protection management. This study was conducted to compare the morphological characteristics of two populations of Rhinogobius similis from Hariroud basin based on landmark morphometric truss network system. A total of 60 individuals from Polkhatoun (30 specimens) and Tafrihgah dam (30 specimens) stations were caught by electrofishing 220 vo...

2008
Joshua M. Peschel Tracy Anne Hammond

The statically-determinate, pin-connected truss is a basic structural element used by engineers to create larger and more complex systems. Truss analysis and design are topics that virtually all students who study engineering mechanics are required to master, many of whom may experience difficulty with initial understanding. The mathematics used to analyze truss systems typically requires lengt...

K. Biabani Hamedani , V. R. Kalatjari,

Structural reliability theory allows structural engineers to take the random nature of structural parameters into account in the analysis and design of structures. The aim of this research is to develop a logical framework for system reliability analysis of truss structures and simultaneous size and geometry optimization of truss structures subjected to structural system reliability constraint....

Journal: :international journal of aquatic biology 0
sara paknejad department of fisheries, islamic azad university, tonekabon branch, mazandaran, iran. adeleh heidari department of fisheries, faculty of natural resources, university of guilan, sowmeh sara, p.o. box: 1144, guilan, iran. hamed mousavi-sabet department of fisheries sciences, faculty of natural resources, university of guilan, someh sara, guilan, iran.

a 15-landmark morphometric truss network system was used to investigate the hypothesis of population fragmentation of shad fish alosa braschnicowi borodin, 1904 along the southern caspian sea. a total of 181 a. braschnicowi specimens were caught from six localities, respectively from the west to the east including; astara, rezvanshahr, anzali, tonekabon, sari and miankale. principal component a...

2014
Ashish Khetan James T. Allison

A novel parameterization concept for structural truss topology optimization is presented in this article that enables the use of evolutionary algorithms in design of large-scale structures. The representational power of Boolean networks is used here to parameterize truss topology. A genetic algorithm then operates on parameters that govern the generation of truss topologies using this random ne...

2009
Jared C. Smolens Brian T. Gold Jangwoo Kim Babak Falsafi James C. Hoe Andreas G. Nowatzyk

Recent studies suggest that the softerror rate in microprocessor logic is likely to become a serious reliability concern by 2010. Detecting soft errors in the processor’s core logic presents a new challenge beyond what error-detecting and correcting codes can handle. Currently, commercial microprocessor systems that require an assurance of reliability employ an error-detection scheme based on d...

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