نتایج جستجو برای: time

تعداد نتایج: 1891407  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1380

در این پایان نامه در فصل اول مقدمه ا ی در باره ساختار پایان نامه بحث شده است در فصل دوم به معرفی ساختار های ‏‎a/d‎‏های با سرعت بالا پرداخته می شود . در فصل سوم به معرفی ساختار مبدل ‏‎a/d‎‏ پایپ لاین و مشکلات آن پرداخته و در ادامه در فصل چهارم ساختار ‏‎a/d‎‏پایپ لاین ‏‎1.5 bit /stage‎‏ معرفی می گردد.در فصل پنجم ساختار مبدلهای ‏‎a/d time interleaved‎‏ تشریح شده و مسائل و مشکلات موازی کردن مبدلهای...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده برق و الکترونیک 1390

there are many approaches for solving variety combinatorial optimization problems (np-compelete) that devided to exact solutions and approximate solutions. exact methods can only be used for very small size instances due to their expontional search space. for real-world problems, we have to employ approximate methods such as evolutionary algorithms (eas) that find a near-optimal solution in a r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1391

abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...

Journal: :تحقیقات بازاریابی نوین 0
fateme nemati faria nassiri-mofakham hadi shahmoradi

for a long time, culture has been an influencing parameter in negotiations. growth of international trades and business competitions has increased the importance of negotiations among countries and different cultures. developing new technologies, particularly the use of artificial intelligence in electronic trading areas, has provided us with the application of intelligent agents to resolve cha...

Journal: :asia pacific journal of medical toxicology 0
babak mostafazadeh associate professor, department of forensic medicine and toxicology, school of medicine, shahid beheshti university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) soheila vaghefi clinical specialist in forensic medicine and toxicology, mofid educational hospital, department of forensic medicine and toxicology, school of medicine, shahid beheshti university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) mohammadali emamhadi associate professor of forensic medicine and toxicology, department of forensic medicine and toxicology, school of medicine, shahid beheshti university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) latif gachkar professor of infectious diseases, school of medicine, department of infectious diseases, school of medicine, shahid beheshti university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences)

background: acetaminophen (n-acetyl-p aminophenol; apap) is one of the most common types of analgesics. it is also the most common xneobitic reported to poison centers. this study investigates if therapeutic doses of nac can falsely increase coagulation tests, prothrombin time (pt) and bleeding time (bt). ​​ methods: thirty-six apap poisoned patients whose acetaminophen serum concentration were...

Journal: :international journal of epidemiology research 0
edris hasanpoor iranian center of excellence in health management, school of management and medical informatics, tabriz university of medical sciences, tabriz, iran ali janati iranian center of excellence in health management, school of management and medical informatics, tabriz university of medical sciences, tabriz, iran elaheh haghgoshayie research center for health services management, institute for futures studies in health, kerman university of medical sciences, kerman, iran farzaneh aslani research center for modeling in health, institute for futures studies in health, kerman university of medical sciences, kerman, iran morteza arab zozani research center for modeling in health, institute for futures studies in health, kerman university of medical sciences, kerman, iran

background and aims: visit quality is a crucial component of patient-physician interaction that its inadequacy can negatively influence the diagnosis and treatment efficiency. the waiting time and visit length are important determinants of quality in the outpatient care setting. thus, the aim of this study was to determine waiting time and visit length and to compare them before implementation ...

Journal: :international journal of supply and operations management 2014
shima teimoori hasan khademi zare mohammad saber fallah nezhad

the location-routing problem is a relatively new branch of logistics system. its objective is to determine a suitable location for constructing distribution warehouses and proper transportation routing from warehouse to the customer. in this study, the location-routing problem is investigated with considering fuzzy servicing time window for each customer. another important issue in this regard ...

Baqer Saroukhani Majedeh Gholipour, Mohammad Sadiq Mahdavi

Today, leisure time is changing by globalization and using of information technology. Most of people especially women prefer to spend their leisure time by modern technologies. Thus, they spend their leisure time to look up satellite programs and use of the internet. This research has done for sociological consideration of the globalization of communications (internet  & satellite) on leisure t...

Journal: :journal of industrial engineering, international 2011
e mehdizadeh r tavakkoli-moghaddam

in this paper, a genetic algorithm is presented for an identical parallel-machine scheduling problem with family setup time that minimizes the total weighted flow time ( ). no set-up is necessary between jobs belonging to the same family. a set-up must be scheduled when switching from the processing of family i jobs to those of another family j, i  j, the duration of this set-up being the sequ...

Journal: :international journal of industrial engineering and productional research- 0
mehdi mahnam department of industrial engineering, amirkabir university of technology, 424 hafez avenue, tehran, iran seyyed mohammad taghi fatemi ghomi professor of industrial engineering, amirkabir university of technology, 424 hafez avenue, tehran, iran

fuzzy time series have been developed during the last decade to improve the forecast accuracy. many algorithms have been applied in this approach of forecasting such as high order time invariant fuzzy time series. in this paper, we present a hybrid algorithm to deal with the forecasting problem based on time variant fuzzy time series and particle swarm optimization algorithm, as a highly effici...

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