نتایج جستجو برای: this paper addresses its origins

تعداد نتایج: 6979100  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this thesis, we exploit a simple and suitable method for immobilization of copper(ii) complex of 4?-phenyl-terpyridine on activated multi-walled carbon nanotubes [amwcnts-o-cu(ii)-phtpy]. this nanostructure was characterized by various physico-chemical techniques. to ensure the efficiency and fidelity of copper species, the implementation of three-component strategies in click-chemistry all...

2011
Geoffrey M. Hodgson

Darwinism offers a highly abstract and general meta-theoretical framework to help understand both natural and social evolution. This framework is of significance for ecological economics because it addresses the evolution and coevolution of biological systems and sets of human institutions. This paper outlines this framework and charts its historical origins since the time of Darwin. It is sugg...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم پایه 1391

این پژوهش به اکسید اسیون متانول در محیط قلیایی می پردازد. برای این منظور ابتدا ترسیب ذرات نیکل، پلاتین و نیکل – پلاتین بر روی زیر لایه کاغذ کربنی به روش آبکاری به شیوه ی جریان مستقیم استفاده شد. در ادامه مورفولوژی پوشش های ذرات فلزی بر روی کاغذ کربنی از طریق میکروسکوپ الکترونی روبشی بررسی و مطالعه شد. سپس خواص کاتالیستی الکترودها ی حاصل در اکسیداسیون متانول با استفاده از روشهای الکتروشیمیایی هم...

Journal: :تاریخ علم 0
فاطمه دوست قرین دانش آموختۀ دورۀ دکتری تاریخ فرهنگ و تمدن ملل اسلامی دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران

the elements of euclid, sometimes knows as the “the book of euclid”, and in the mathematical texts of the islamic period often referred to as “the book of the elements”, is one of the main sources of islamic mathematics. this paper addresses the history of the translation of this book and its recension by naṣīr al-dīn ṭūsī. then, through a comparison of the first chapter of the fourth part of q...

Journal: :BioEssays : news and reviews in molecular, cellular and developmental biology 2010
John Herrick

Eukaryotic cells are often exposed to fluctuations in growth conditions as well as endogenous and exogenous stress-related agents. During development, global patterns of gene transcription change substantially, and these changes are associated with altered patterns of DNA replication and larger distances between replication origins in somatic cells compared to embryos. Conversely, when cells ex...

Journal: :international journal of society, culture & language 2014
piotr kuhiwczak

this paper looks at the issues of transculturation as explored in auto and semi-autobiographical accounts of linguistic and cultural transitions. the paper also addresses a number of questions about the structure of these texts, the authors’ linguistic competences, as well as questions about the theoretical and conceptual tool which may help us to discuss the issues the writers are reflecting o...

2018
Matthew Edwards Guillermo Suarez-Tangil Claudia Peersman Gianluca Stringhini Awais Rashid Monica Whitty

This paper presents an analysis of online dating fraud’s geography. Working with real romance scammer dating profiles collected from both proxied and direct connections, we analyse geographic patterns in the targeting and distinct characteristics of dating fraud from different countries, revealing several strong markers indicative of particular national origins having distinctive approaches to ...

2006
Hamed Valizadegan Rong Jin

Maximum margin clustering was proposed lately and has shown promising performance in recent studies [1, 2]. It extends the theory of support vector machine to unsupervised learning. Despite its good performance, there are three major problems with maximum margin clustering that question its efficiency for real-world applications. First, it is computationally expensive and difficult to scale to ...

This paper addresses the Tardy/Lost penalty minimization on a single machine. According to this penalty criterion, if the tardiness of a job exceeds a predefined value, the job will be lost and penalized by a fixed value. Besides its application in real world problems, Tardy/Lost measure is a general form for popular objective functions like weighted tardiness, late work and tardiness with reje...

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