نتایج جستجو برای: طبقهبندی jel o18
تعداد نتایج: 27876 فیلتر نتایج به سال:
The Patentatlas by Greif and Schmiedl (2002) represents an important source for patent data in Germany. Its use for industry-specific studies is however problematic because the correct assignment of patent data classified by technological fields to commonly used industry classifications is unclear. This paper presents an application-oriented approach to this issue. In using industryspecific R&D...
This paper analyzes the pattern of provincial economic integration in China for the period 1991−98 by means of an errorcomponents model that decomposes provincial sectoral real valueadded growth into common national effects, industry-specific effects and province-specific effects. We find significant comovements in the long run although province-specific factors still account for one-third of t...
In many developing countries, agriculture hires at least as many workers as manufacturing industries. We investigate an economic geography model in which agricultural goods are costly to transport and in which manufactures hire labor from the local agricultural sector as unskilled labor. Our conclusions show that the parameters in the agricultural sector are crucial to determine the spatial con...
Today, globalization and integration processes in the economy have a significant impact on industrial development of cities regions. The purpose article is to analyze substantiate directions industry Kharkiv region context based competitive approach. article, study leading scientific publications content analysis statistical information, reveals peculiarities region's industry. research used se...
Sustainable Development Goals (SDGs) seek to achieve economic, social, and environmental progress globally. However, trade-offs among these three pillars might occur, particularly in the context of cities. We argue that exist because traditional factors production for economic welfare are not always relevant other dimensions city sustainability. Consequently, additional needed facilitate 2030 a...
We report sequencing of the O antigen encoded by the rfb gene cluster of Salmonella enterica serotype Jangwani (O17) and Salmonella serotype Cerro (O18). We developed serogroup O17- and O18-specific PCR assays based on rfb gene targets and found them to be sensitive and specific for rapid identification of Salmonella serogroups O17 and O18.
urbanization agglomeration that is named jacobs externalities, refers to the role of economic diversification in urban. localization agglomeration, marshal-arrow-romer (mar) externalities, is related to the concentration of firms activated in a special industry within a specified place. the purpose of this research is to explore the impact of different types of agglomeration economies on employ...
با تغییر جهت گیری برنامه ریزان اقتصادی کشورهای مختلف درطول دو دهه اخیر، رشد سریع اقتصادی جای خود را به توسعه، کاهش فقر و نابرابری داده است. این موضوع، حساسیت پیرامون ریشه ها و راهکارهای مواجهه با فقر را افزایش داده و با توجه به مطرح بودن مناطق روستایی به عنوان یکی از مهمترین کانون های فقر، توجه بیشتر به این مناطق را در پی داشته است. با توجه به مطالعات صورت گرفته پیرامون زمینه های وقوع فقر و آ...
Serum obtained after immunization with an O18 polysaccharide-toxin A conjugate vaccine was evaluated for the estimation of protective levels of anti-O-specific lipopolysaccharide (LPS) immunoglobulin G (IgG) antibody against bacteremia and death caused by a homologous serotype of Escherichia coli K1 strains. Passive transfer of rabbit serum conferred significant protection from a lethal E. coli...
عوامل موثر بر توسعه کشت کلزا مطالعه موردی شهرستان مرودشت چکیده بر اساس آمارهای رسمی، تولید روغن های خوراکی از منابع داخلی، تنها کمتر از 10 درصد نیاز مصرفی کشور را تامین می کند و لذا همه ساله مقادیر چشمگیری چربی و روغن خوراکی خام و آماده با صرف هزینه های ارزی درخور توجهی وارد کشور می شود. طی سالهای گذشته کلزا بعنوان یک محصول جدید وارد سیستم کشت تعداد محدودی از کشاورزان در استان فارس شده است. ا...
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