توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱A Quantitative Study of the Effect of Persian Gulf and Oman Sea as Humidity Sources for Synoptic Systems in Iran
اطلاعات انتشار: اولین کارگاه مشترک ایران و کره در مدلسازی اقلیم، سال
تعداد صفحات: ۱۱
A regional climate model (RegCM3) with horizontal resolution of 40 km in 18 vertical levels, Haltslag global boundary scheme, Grell convection parameterization and Fritsch– Chappell scheme for simulation of mesoscale systems is used for the study of climate of the region in the winter season of "2003–2004". The region concerned extends from 20 to 40 degree north in latitude and from 45 to 65 degree east in longitude, covering Oman Sea and Persian Gulf as arguably the main humidity sources for the synoptic systems. Starting from a control experiment, some specifically designed experiments were performed in which the surface characteristics over the water bodies were changed. Comparison of the model output for monthly accumulated precipitation in the control experiment with the analyzed, observed charts of accumulated precipitation indicates that the model can forecast precipitation reasonably well both temporally and spatially over the region. In different experiments, Persian Gulf and Oman Sea waters were removed, separately and together, in order to find out their individual contributions to the amount of precipitation over the region.<\div>

۲Predictors for Long–Lead Precipitation Forecasting in Western Iran
اطلاعات انتشار: اولین کارگاه مشترک ایران و کره در مدلسازی اقلیم، سال
تعداد صفحات: ۹
In this paper, the effects of large scale climate signals on the low and high precipitation spells in the western part of Iran are investigated. ln order to quantify the effects of large scale climate signals on the precipitation in the study area, long–term records of Southern Oscillation Index (SOI) and North Atlantic Oscillation (NAO) as well as variations in Sea Surface Temqerature ($ST),, Prechpiatiaa, and Sea. Level Pcewre (W)i,n the il4mWe–M. and Europe are investigated. SO1 and NAO did not show strong correlations with the variations of precipitation, however variations of average standardized SLP and SST in a number of characteristic locations showed that specific thresholds can be identified for SLP and SST in the months of June through November as the predictors for occurrence of lower and higher than normal precipitation in the period of January through June of the following year. The characteristic locations include Persian Gulf, Red Sea, Indian Ocean at north side of Australia, Arabian Sea, Mediterranean Sea, Black Sea, Caspian Sea, Siberia, Sudan, and some parts of Atlantic Ocean. In order to quantify the effects of climate signals on the wet and dry spells in the study area, specific thresholds are defined for different ranges of seasonal precipitation jointly based on long–term records of average area precipitation and cumulative stream flows in winter and spring considering different statistical indicators such as Standard Precipitation Index (SPI). The results have shown that standardized SLP difference between South of Greenland and the selected locations in Azores, Black Sea, East and West of Mediterranean Sea and also standardized SLP difference between Siberia and selected
locations in Sudan and East of Persian Gulf can be used for predicting the range of total precipitation in the Winter and Spring in the study area. Relatively strong relations between the SST anomalies in a number of selected locations and the wet and dry spells in the study area are also detected. Also the 500 hpa Geopotential height data between the years of 1948– 2004 is used to estimate the polar vortex intensity and area and their correlation with the precipitation variations. Considering the effects of Mediterranean Sea on the precipitation over the study area, factor analysis has also been used for estimating predictors of the 500 hpa Geopotential height data. The results show that considering the set of predictors developed in this study could significantly reduce the uncertainty of long–lead precipitation forecasting for the study area.<\div>

۳The Evolution of Dome from Iranian Traditional Architecture to Contemporary Global Architecture
نویسنده(ها): ،
اطلاعات انتشار: کنفرانس بین المللی عمران، معماری و توسعه پایدار شهری، سال
تعداد صفحات: ۱۱
Iran has a long history of dome. The shortage of solid and pulled wood that is the main element of flat cover makes the cover of the dome common and it can substitute with flat cover particularly in larger openings. Nowadays, it is used in its contemporary way in many buildings. In this paper we define the morphology of the dome and its history, and its implementation in both traditional and modern style, and then the comparative examples were evaluated<\div>

۴Economic Evaluation of Hospital Information Systems In Iran: A Systematic Review
اطلاعات انتشار: Iranian Journal of Medical Informatics، چهارم،شماره۴، ۲۰۱۵، سال
تعداد صفحات: ۶
Evaluation of hospital information systems (HIS) are payed attention in different aspects such as educational, clinical, research and financial but among these, financial and economic impact of these systems on healthcare organizations is one of the most important concerns of managers. This study is a systematic review to identify the effect of hospital information systems in decreasing cost and increasing effectiveness according to available evidence in Iran. Method: At the first stage the specific keywords of health information systems were searched in Iranian databases such as Magiran, Iranmedex, SID, Medlib, and Irandoc. Then the studies were found and those related to the topic were selected. At the end, the studies was appraised using Critical Appraisal Skill Program (CASP) checklist. Result: Among 1197 article, 36 article about hospital information systems evaluation were selected. About 50% of these article were conducted by using questionnaire and 30% of them have evaluated hospital information systems by observation, interview or qualitative methods. Although these studies answer whether the systems are or are not cost effectiveness but their answer is based on people’s viewpoint and just two articles found cost and effectiveness of HIS with accountable criteria. After quality assessment, none of articles matched the pattern of economic evaluation. Despite of Persian articles, there is not any good evidence to judge about cost effectiveness of HIS. Although these articles express some hypothesis about cost effectiveness of HIS but it is necessary to prove this claim through exact and scientific ways. Conclusion: because of managers’ need to know about the quality of HISs in organizations and the necessity of using guidelines, perhaps there is a good suggestion that related institutions try to develop guidelines and standards to facilitate these types of studies.
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