Evaluation of technology transfer strategy of petrochemical process

In this paper we present technology transfer strategy of petrochemical process to Iranian industries. Petrochemical industries import requested technology by some known strategies such as Foreign Direct Investment (FDI), Licensing, Joint Venture (JV), Turn-key, Reverse Engineering (RE) and Research & Development (RD). The strengths and weaknesses of each strategy was evaluated according to our situation and condition. In first step, the related literature and previous studies we investigated to find indexes for technology transfer of petrochemical process. By prepared questionnaire and referring to petrochemical experts, through AHP method, the significance of indexes related to each strategy was evaluated and analyzed. The result shows that make JV with an International company who owns the know-how technology and strong background in requested technology, will help us to succeed in our investment. Licensing, also, is an appropriate alternative for some technology transferring projects that no JV could be created.     

改革大学英语教学培养学生社会文化能力

随着科技、文化、经济交流的发展,社会对大学生英语应用能力要求越来越高,作为高等教育中一门重要的基础课程,大学英语的教学效果正受到普遍关注。我们应树立新的教学观念,改革传统教学模式,致力培养具有社会文化能力的复合型人才。     

LESSONS FOR THE US SYSTEM OF FINANCIAL ARBITRATION： A RESPONSIVE EMPIRICAL EXPLORATION OF ARBITRATION AND OMBUDSMAN SERVICES

The United States largely relies on a system of arbitration to handle retail consumer financial disputes. This approach has undergone significant challenges in recent yearsparticularly in light of recent abuses of consumer credit arbitration mechanisms. This paper reports on the result of a non-randomized smalLn survey which we label the ＂Financial Dispute Study＂ aiming at evaluating the relative effectiveness of two major approaches to financial dispute resolution -- arbitration and ombudsman services. Nearly a hundred survey questionnaires were distributed to financial dispute resolution practitioners throughout the world. A total of forty-eight arbitrators and ombudsmen from East Asia, North America, Europe, the Middle East and Africa responded. In the Study the participants were asked how practitioners viewed the level of satisfaction, settlement rate and perceived increase or decrease in the use of the given method of financial dispute resolution -- whether arbitration or ombudsman service.     

Impacts of Aggregation on Relative Performances of Nonsurvey Updating Techniques And Intertemporal Stability of Input–Output Coefficients

In many instances, and for variety of reasons, input–output researchers are compelled to both employ mechanical techniques to update older survey-based tables as well as using more aggregated ones. This combination, however, gives rise to several concerns. The present paper is an attempt to investigate two such questions. First, the effects of aggregation on the accuracy ranking of selected updating methods, and second, the effects of aggregation on intertemporal stability of the input–output coefficients. To probe these issues, three updating methods were selected. These methods are NAÏVE or constant coefficient hypothesis, RAS or biproportional method, and LaGrangian optimization technique. Two survey-based tables from the former Soviet Union along with the selected updating techniques are used to generate updated target year’s direct and inverse transaction matrices at four aggregation levels. Comparison of the resultant estimates at these four levels of aggregation with their counterparts in the actual benchmark table reveals that a higher level of aggregation neither affects the rankings of the updating methods nor does it universally and unequivocally leads to a higher degree of intertemporal stability of input–output coefficients.     

SEM-EDS analysis and discrimination of forensic soil

Soils vary among different areas, and have some characteristics because of the natural effects and transfers made by human and other living beings in time. So that forensic examination of soil is not only concerned with the analysis of naturally occurring rocks, minerals, vegetation, and animal matter. It also includes the detection of such manufactured materials such as ions from synthetic fertilizers and from different environments (e.g., nitrate, phosphate, and sulfate) as environmental artifacts (e.g., lead or objects as glass, paint chips, asphalt, brick fragments, and cinders) whose presence may impart soil with characteristics that will make it unique to a particular location. Many screening and analytical methods have been applied for determining the characteristics which differentiate and discriminate the forensic soil samples but none of them easily standardized. Some of the methods that applied in forensic laboratories in forensic soil discrimination are the color comparison of the normal air-dried (dehumidified) and overheated soil samples, macroscopic observation, and low-power stereo-microscopic observation, determination of anionic composition by capillary electrophoresis (CE), and the elemental composition by scanning electron microscope (SEM)-energy dispersive X-ray spectrometer (EDS) and other high sensitivity techniques. The objective of this study was to show the effect of the application of 9 tonnes/cm2 pressure on the elemental compositions obtained by SEM-EDS technique and comparing the discrimination power of the pressed-homogenized and not homogenized forensic soil samples. For this purpose soil samples from 17 different locations of Istanbul were collected. Aliquots of the well mixed samples were dried in an oven at 110-120 degrees C and sieved by using 0.5 mm sieve and then the undersieve fraction(<0.5 mm) of these samples put on an adhesive tape placed on a stub. About 100-150 mg aliquots of dried, sieved samples were pressed under 9 tonnes/cm2 pressure by KBr disk preparation apparatus of an infrared spectrophotometer. Surfaces of the randomized particles and the pressed disks of the soil samples were scanned and the elemental compositions were determined with scanning electron microscope JEO-JSM-5600 equipped with an energy dispersive X-ray spectrometer OXFORD Link-ISIS-300. The samples from top of the sieves were examined with stereo-microscope equipped with JVC-TK-128DE color video camera and JVC-GV-PT2, digital video printer. Natural and artificial materials that have characteristic features were identified. Then for additional confirmation all soil samples were dried at 120 degrees C and over 780 degrees C and their colors compared. We concluded that pressing the whole sieved soil samples under 9 tonnes/cm2 pressure results in smashing over the harder particles into the softer matrix and results in homogenization of the soil sample. The elemental compositions of these samples obtained by SEM-EDS with 10-fold less standard deviation (S.D.) values and so that with more reproducibility and discrimination power.     

Empirical examination of public debt sustainability in African economies: A panel data analysis

This study intends to investigate public debt sustainability across 29 Sub-Sahara African (SSA) economies, employing various econometric specifications, for the sampled years 1996–2020. The study employs Bohn's (Are stationarity and cointegration restrictions really necessary for the intertemporal budget constraint? Journal of monetary Economics, 54(7), pp.1837–1847.) framework of sustainability as the baseline model to assess public debt sustainability across the sampled Sub-Sahara African economies. As additional tests of public debt sustainability in order to support the baseline findings, the study also employs panel unit root and timeseries unit tests. The baseline findings from the OLS, panel quantile and instrumental panel quantile regressions show that public debt is sustainable across the panel of SSA economies. The positive and statistically significant response of primary balance under the Bohn's framework of sustainability manifest that the intertemporal budget constraint is not violated in the sampled economies. The consistency in the estimates under the OLS, panel quantile and instrumental panel quantile regressions also show that the estimates are robust throughout the estimation process. Also, utilizing the panel unit root test for public debt sustainability, the findings show that public debt is stationary over the sampled years which implies that intertemporal budget constraint holds and that public debt is sustainable across the sampled SSA economies. However, the timeseries analysis indicate that although majority of the SSA economies have sustainable public debt ratios, four countries namely Uganda, Sudan, Togo and Cote d'Ivoire have unsustainable public debt ratios. The study has important policy implications in terms of prudent public debt management and fiscal management for the sampled SSA economies.