نتایج جستجو برای: سناریوهای انتشار rcps
تعداد نتایج: 16057 فیلتر نتایج به سال:
دو مسئله عمده در مطالعات بررسی اثرات هیدرولوژیکی تغییر اقلیم داشتن اطلاعات آماری کافی و انتخاب بهترین مدل بارش- رواناب می باشد. مدل های اقلیمی، با توانایی شبیه سازی متغیرهای اقلیمی، مراجع پیش بینی های آتی محسوب می شوند. لذا مدل بارش- رواناب باید قادر به شبیه سازی جریان رودخانه تنها با استفاده این متغیرها باشد. این مطالعه بهمنظور ارزیابی اثراتی که نیاز به سناریوهای اقلیمی محلی دارند، به تشریح ر...
امروزه با بر هم خوردن تعادل سیستماتیک سامانه ی اقلیم، بروز آشفتگی ها و ناهنجاری های رفتاری در اقلیم تشدید یافته است؛ از جمله بروز و تشدید این رخدادهای حدی، افزایش خشک سالی هاست. از آن جا که کشور ایران به دلیل موقعیت خاص جغرافیایی خود، در مواجه با این ناهنجاری های اقلیمی به شدت آسیب پذیر است. در این تحقیق به ارزیابی و شبیه سازی اثر گرمایش جهانی بر خشک سالی های آینده ی کشور پرداخته شده است. بدین ...
We prospectively investigated the large-scale implementation of a respiratory-therapist-driven protocol (TDP) that included 117 respiratory care practitioners (RCPs) managing 1,067 patients with respiratory failure over 9,048 patient days of mechanical ventilation. During a 12-mo period, we reintroduced a previously validated protocol that included a daily screen (DS) coupled with spontaneous b...
Projections of future climate change depend upon future anthropogenic greenhouse gas emissions. In preparation for its Fifth Assessment Report, the Intergovernmental Panel on Climate Change implemented a new approach to generating emissions scenarios, called ‘Representative Concentration Pathways’ (RCPs), which replace the scenarios in the ‘Special Report on Emissions Scenarios’ (SRES). The RCP...
For its fifth assessment report, the Intergovernmental Panel on Climate Change divided future scenario projections (2005-2100) into two groups: Socio-Economic Pathways (SSPs) and Representative Concentration Pathways (RCPs). Each SSP has country-level urban and rural population projections, while the RCPs are based on radiative forcing caused by greenhouse gases, aerosols and associated land-us...
The (CGG)n-repeat in the 5'-untranslated region of the fragile X mental retardation gene (FMR1) gene is polymorphic and may become unstable on transmission to the next generation. In fragile X syndrome, CGG repeat lengths exceed 200, resulting in silencing of FMR1 and absence of its protein product, fragile X mental retardation protein (FMRP). CGG repeat lengths between 55 and 200 occur in frag...
Resource-constrained project scheduling (RCPS) problem can be defined as a combinatorial problem of constructing a special plan for performing a number of precedence related tasks that have to be executed with the use of limited uncertain resources. In this paper we study the framework of a heuristic approach to deal with uncertainty while modelling RCPS problem by considering a fuzzy set theor...
This paper summarizes the development process and main characteristics of the Representative Concentration Pathways (RCPs), a set of four new pathways developed for the climate modeling community as a basis for long-term and near-term modeling experiments. The four RCPs together span the range of year 2100 radiative forcing values found in the open literature, i.e. from 2.6 to 8.5 W/m. The RCPs...
Climate projections for the fourth assessment report1 (AR4) of the Intergovernmental Panel on Climate Change (IPCC) were based on scenarios from the Special Report on Emissions Scenarios2 (SRES) and simulations of the third phase of the Coupled Model Intercomparison Project3 (CMIP3). Since then, a new set of four scenarios (the representative concentration pathways or RCPs) was designed4. Clima...
Due to the highly transmissible nature of porcine reproductive and respiratory syndrome (PRRS), implementation of regional programs to control the disease may be critical. Because PRRS is not reported in the US, numerous voluntary regional control projects (RCPs) have been established. However, the effect of RCPs on PRRS control has not been assessed yet. This study aims to quantify the extent ...
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