Power system engineers are currently facing challenges to increase the power transfer capabilities of existing transmission system. This is where the Flexible AC Transmission Systems (FACTS) technology comes into effect. With relatively low investment, compared to new transmission or generation facilities, the FACTS technology allows the industries to better utilize the existing transmission an...

About the Cover: Black carbon (BC) containing particles have an important role to play in climate change; directly heating through absorption of radiation, and/or indirectly cooling through the seeding of clouds. New research in this issue, using a mobile laboratory indicates that gasoline powered cars may produce more BC than previously considered. Transmission electron microscopy background i...

This paper reports new application of new transmission X-ray microscopy powered by a synchrotron source for the study of aqueous based clay suspensions. This paper delineates the advantages and limitations of this method. The tested transmission X-ray microscopy (TXM) technique has shown good agreement with the cryo-stage SEM technique. The spacial resolution of this TXM technique is 60 nm and ...

In the drive for the consolidation of professional authority, physicians in the nineteenth century sought to exert control over all associated occupations, and weaken the influence of competitors. Many historians have chronicled this process, as doctors and their associations sought to proscribe or eliminate competitors such as homeopaths, eclectics, chiropractors and Thomsonians. 1 Others have...

The purpose of this study was to investigate teachers’ characteristics based on the implications of Ministry of Education’s strategic plans. This applied research utilized qualitative content analysis with a conventional approach and was a library research in terms of data collection. The statistical population of the study was comprised of Ministry of Education’s strategic plans, i.e., the The...

what is engineering and who is an engineer that changed our world so drastically? based on what type of education the engineers have gained the power to do this? what should we do for becoming successful in our professional career? engineers receive competencies in one of the engineering branches during their school years but less effort is made to answer the above questions. in other word, uni...

Combining the daily operations of the utilities, the latest computer technology and the professional technology of distribution network planning, a practical GIS (Geographical Information System) based computer decision-making support system with eight sub systems for urban power distribution network planning is introduced. The models and functions of the system are described. This system has b...

this study aimed to identify the portions of teaching materials for english classes in iran’s high schools. the efficiency of these materials was evaluated by (a) eliciting the teachers’ perception of the materials to identify their distribution portions and (b) studying the teachers’ satisfaction to identify whether the materials were successful to develop the efl teachers’ knowledge and skill...

This paper studies the internal politics of a licensing association with regards to expansion of the licensure, and to self-regulation. A theoretical model is presented of a professional association which has the power to restrict entry, and yet a majority of its members may prefer to allow entry, even when doing so reduces the total revenue of its members. This may happen due to a con‡ict of i...