نتایج جستجو برای: 1370

تعداد نتایج: 2165  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1381

هدف اصلی از انجام این تحقیق استفاده از برآورد تابع هزینه جهت دستیابی به ساختار هزینه کارخانه سیمان فارس به عنوان یک واحد مطرح استان می باشد. در این راستا از یک تابع هزینه ترانسلاگ براساس بسط ناقص مرتبه سوم سری تیلور و آمارهای سری زمانی فصلی برای دوره های (‏‎(1370-13780‎‏ استفاده شده است.

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

در این پژوهش این موضوع مورد بحث قرار گرفته است که به دنبال برنامه های نوسازی و مدرن سازی پهلوی نوعی سرگشتگی (آنومی) در جامعه ایران پدید آمد این سرگشتگی معلول گسستن ازهمبستگی های سنتی قدیمی، و در حال گذر قرار گرفتن به سمت همبستگی های جدید بود و با توجه به خصوصیات روانی - اجتماعی جامعه سرگشته و نیاز آن ها به تعریف و معنابخشی زندگی، حضرت امام خمینی (ره) و در کنار او شهید مطهری و دکتر علی شریعتی تو...

2015
Kangke Jin Xufeng Zhou Zhaoping Liu

Here, we report a two-step synthesis of graphene/sulfur/carbon ternary composite with a multilayer structure. In this composite, ultrathin S layers are uniformly deposited on graphene nanosheets and covered by a thin layer of amorphous carbon derived from β-cyclodextrin on the surface. Such a unique microstructure, not only improves the electrical conductivity of sulfur, but also effectively in...

1998
Wolfgang Ochs

We discuss the theoretical expectations and phenomenological evidence for the lightest glueballs and the members of the meson nonet with quantum numbers J PC = 0 ++. We reconsider the recent evidence for candidate states with masses below 1700 MeV, but include also the results from earlier phase-shift analyses. Arguments are presented to classify the scalars f 0 (980) and f 0 (1500) as members ...

2011
Taichi Haruna Kohei Nakajima

Transfer entropy is a measure of the magnitude and the direction of information flow between jointly distributed stochastic processes. In recent years, its permutation analogues are considered in the literature to estimate the transfer entropy by counting the number of occurrences of orderings of values, not the values themselves. It has been suggested that the method of permutation is easy to ...

2008
Terry Huntsberger Abhi Jain Jonathan Cameron Gail Woodward David Myers Garett Sohl

As the duration of rover missions increases (the Mars Exploration Rovers are each currently beyond 1370 sols on the Martian surface), a wider variety of terrain types (slopes, soil types, etc) will usually be accessed. It is extremely important that a simulation environment used for flight systems has the necessary fidelity to model rover mobility on sloped, uneven terrain such as that encounte...

Journal: :Nano letters 2006
R Arenal A C Ferrari S Reich L Wirtz J-Y Mevellec S Lefrant A Rubio A Loiseau

Single-wall boron nitride nanotubes samples synthesized by laser vaporization of a hexagonal BN target under a nitrogen atmosphere are studied by UV and visible Raman spectroscopy. We show that resonant conditions are necessary for investigating phonon modes of BNNTs. Raman excitation in the UV (229 nm) provides preresonant conditions, allowing the identification of the A1 tangential mode at 13...

Journal: :Physical review letters 2003
Eef van Beveren George Rupp

The very recently observed D(*)(sJ)(2317)(+) meson is described as a quasibound scalar csmacr; state in a unitarized meson model, owing its existence to the strong 3P0 Okubo-Zweig-Iizuka-allowed coupling to the nearby S-wave DK threshold. By the same mechanism, a scalar D(*)(0)(2100-2300) resonance is predicted above the Dpi threshold. These scalars are the charmed cousins of the light scalar n...

Journal: :Analytical chemistry 1997
K Peck S L Wung G S Chang J J Yen Y Z Hsieh

Restriction mapping is one of the essential steps in gene analysis and molecular biology studies. Slab gel electrophoresis is the traditional way to separate DNA fragments for restriction mapping. However, slab gel electrophoresis does not provide sufficient resolution as required in many mapping applications, and the use of radioisotopes in traditional mapping methods creates health hazards. I...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید