نتایج جستجو برای: has constantly faced two major challenges first
تعداد نتایج: 5546515 فیلتر نتایج به سال:
Ad hoc mobile networks have dynamic topology with no central management. Because of the high mobility of nodes, the network topology may change constantly, so creating a routing with high reliability is one of the major challenges of these networks .In the proposed framework first, by finding directions to the destination and calculating the value of the rout the combination of this value with ...
Intent One data fragment has several alternative structural representations tailored toward specic data manipulation approaches.
Background and Aim: This paper seeks to explore the concepts of the information commons (IC). The paper provides a look at the models and characteristics of the IC. A number of projects of the IC are presented. We will discuss the situation of an existing traditional library. It makes recommendations for converting an existing library space into an IC. A number of Challenges of implementation o...
abstract in this thesis at first we comput the determinant of hankel matrix with enteries a_k (x)=?_(m=0)^k??((2k+2-m)¦(k-m)) x^m ? by using a new operator, ? and by writing and solving differential equation of order two at points x=2 and x=-2 . also we show that this determinant under k-binomial transformation is invariant.
Purpose. Public libraries, like other organizations involved in the spread of coronary anxiety disorder, have taken different approaches to their activities. One of the most important challenges is job adjustment and change management during the corona outbreak. This study investigated the effect of corona anxiety on change management and the mediating role of work volition in public libraries....
Cities are centres of economy, policy, society and culture and more than half of the world’s population already lives in metropolitan areas. In the last decades the world has faced a constantly accelerating growth of urban areas a development which is closely related to a tremendous increase of the urban population. In 2007 the amount of urban residents has outnumbered the rural population for ...
چکیده مجموعه حاضر با هدف معرفی و ارائه ی توصیفی برای اصطلاحات رایج در دانش معنی شناسی تهیه شده است. برای دستیابی به چنین هدفی سعی بر آن بود تا صرفاً به واژگان نقش مند در شاخه ی عمده ی معنی شناسی زبانی توجه شود. در حوزه معنی شناسی زبانی، به اصطلاحات در شاخه ای از این دانش، یعنی معنی شناسی نظری (theoretical semantics) و آنچه معنی شناسی کاربردی (applied semantics) نامیده ایم، اشاره شود. و هدف از ت...
From the beginning of their lives, human beings have been constantly faced with geomorphic threats, and these risks have led to human and financial losses in human habitats, especially in cities and villages, for human societies. One of these risks is earthquakes. According to a report by the United Nations Planning Office in 2002, Iran ranked first among the countries in the world in terms of ...
the concept of energy security has been changed into one of the key and controversial concepts in international relations and energy economy in the recent years. the literature of this concept has more developed in europe. because, european countries supply their major needs by imports. hence, russia as one of the main energy suppliers of europe :union: uses leveraging energy for closer to euro...
Abstract COVID-19 pandemic has faced orthodontists with challenges. The number of unnecessary orthodontics visits should be decreased to stop the spread of this virus. However, if the patients undergoing orthodontic treatments are not followed for more than two months emergencies can occur. Hopefully these emergencies can mostly be handled at home if the orthodontist guides the patient c...
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