نتایج جستجو برای: makers is obviousduring last several decades
تعداد نتایج: 7489721 فیلتر نتایج به سال:
Abstract Due to the annual increase in CO 2 emissions, climate change continues progress. In order achieve goals set Paris Climate Agreement, capturing measures are necessary addition reduction carbon dioxide emissions. This review article describes and discusses methods published last 20 years. Processes for absorption, gas–solid reaction, adsorption, cryogenic processes, membrane processes ca...
Planning and implementing strategies and programs to develop tourism has long been a priority issue for policy makers and decision makers. Hence, the interest in quantitative methods for assessing the extent to which possible modifications of some determinants can affect the tourism flows of the destination country. Besides, over the last decades, in Italy as well as in many other destinations ...
OBJECTIVES To review surgical techniques used in the treatment of laryngoceles over the last two decades and point out developments and trends. MATERIALS AND METHODS PubMed, the Cochrane Library, and the JBI Library of Systematic Reviews were searched using the term "laryngocele." Demographic data, type of laryngocele, presence of a laryngopyocele, type of treatment and need for a tracheotomy...
rapid technological and economic growth over the last several decades has changed human lives and made modern society face complex decision making problems. these kinds of problems are characterized by incommensurate and conflicting criteria or objectives such as cost, reliability, performance, safety and productivity. multi criteria decision making is an approach that can be used to deal compl...
Abstract. Marriage, along with the mechanisms of realization and the order and arrangements related to it, is one of the most important social, cultural and biological phenomena that is both affected by the changes in society and influential on it. In recent decades, despite the relative continuity in some aspects, attitudes and behaviors related to marriage in Iran, the timing of marriage has ...
this thesis basically deals with the well-known notion of the bear-invariant of groups, which is the generalization of the schur multiplier of groups. in chapter two, section 2.1, we present an explicit formula for the bear-invariant of a direct product of cyclic groups with respect to nc, c>1. also in section 2.2, we caculate the baer-invatiant of a nilpotent product of cyclic groups wuth resp...
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