نتایج جستجو برای: natural network

تعداد نتایج: 1128616  

Journal: :جنگل و فرآورده های چوب 0
مهدی قربانی استادیار دانشکدة منابع طبیعی دانشگاه تهران، کرج، ایران ربانه روغنی دانشکده منابع طبیعی دانشگاه تهران مه رو ده بزرگی دانشجوی دکتری بیابان زدایی دانشگاه تهران، کرج، ایران

doing centralized and coherent activities between governmental agencies is essential at any level. creating suitable institutional structure for appropriate solutions of policy problem in natural resources at multiple levels is possible using application of network governance. the aim of this paper is institutional network analysis with co-management of zagros dry forests in regional (county) l...

In the present work, an artificial neural network (ANN) model was used to study the quantitative structure retention relationship (QSRR) of retention index (RI) of some volatile compounds in natural cocoa and conched chocolate powder. Molecular structural descriptors are selected using genetic algorithm to construct the nonlinear QSRR models, kernel partial least squares PLS (KPLS) and Levenber...

Journal: :international journal of architecture and urban development 2012
shahindokht barghjelveh nima sayad

ecological destruction in human-dominated landscapes has significant impacts on environment sustainability internationally. landscape planning can play a role in mitigating the effects of human-related activities. one element of landscape planning involves the analysis of the biological, spatial and social arrangement of areas in an urban environment and identifying characteristics that are und...

Journal: :Education and Information Technologies 2023

Abstract Scientists use specific terms to denote concepts, objects, phenomena, etc. The are then connected with each other in sentences that used science-specific language. Representing these connections through term networks can yield valuable insights into central and properties of the interconnections between them. Furthermore, understanding enhance assessment diagnostics science education. ...

Journal: :Natural Hazards and Earth System Sciences 2014

ژورنال: مسکن و محیط روستا 2021
Kamani, Seyed Mohammad Hossein, Moghali, Alireza , Rashidi, Saeed,

Due to the unexpected nature of natural disasters, any mismanagement in dealing with them may lead to more serious crises. However, providing an effective management of disasters and having an immediate control over the situation need the extensive cooperation of public and private organizations and the participation of people in the form of network governance. This study investigates the views...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
ahmad azari mojtaba shariaty-niassar mahmoud alborzi

the ability of artificial neural network (ann) for estimating the natural gas demand load for the next day and month of the populated cities has shown to be a real  concern. as the most applicable network, the ann with multi-layer back propagation perceptrons is used to approximate functions. throughout the current work, the daily effective temperature is determined, and then the weather data w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی شیمی 1386

در این تحقیق مطالعات تجربی رفتار تراوایی گازهای اسیدی در حالت مخلوط با گاز طبیعی در غشاهای پلیمری انجام گرفته است. در این تحقیق روشهای تعیین پارامترهای تراوایی گازها و فعالیت های سایر محققان دراین زمینه شرح داده شده و همچنین عملکرد غشایی از جنس پلی استریورتان اوره برای کاربرد جذف گازهای اسیدی از متان به صورت تجربی مورد بررسی قرار گرفته است. غشاء های مورد مطالعه محصول شرکت metax روسیه می باشد. آ...

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