نتایج جستجو برای: space environment
تعداد نتایج: 981503 فیلتر نتایج به سال:
The space environment consists mainly of high-energy charged particles, such as protons, electrons and heavy ions. They are originating from several sources including galactic cosmic radiation, solar flares and van Allen belts. High energy electromagnetic radiation and neutrons have also been measured on spacecraft. Although shielding can reduce the effect of space radiation it cannot be elimin...
organization of living environment is possible through a clear definition of private and public arenas and determinationof a spatial hierarchy. such defined arenas increase the sense of belonging to the environment which personalizesresidential environments. enclosure is among the quantities that play a significant role in defining the spaces. in fact,enclosure is the factor that defines a spac...
Environments where children will be present is effective in the formation of personality, the child's behavior and his all-round development. The researchers concluded that the experience of recreation and play are effective in preparing children for effort, problem-solving and creative activities. In the current child's environment, spaces that do not give the children a chance to thinking and...
abstract:assume that y is a banach space such that r(y ) ? 2, where r(.) is garc?a-falset’s coefficient. and x is a banach space which can be continuously embedded in y . we prove that x can be renormed to satisfy the weak fixed point property (w-fpp). on the other hand, assume that k is a scattered compact topological space such that k(!) = ? ; and c(k) is the space of all real continuous ...
The effects of the space radiation environment on spacecraft systems and instruments are significant design considerations for space missions. Astronaut exposure is a serious concern for manned missions. In order to meet these challenges and have reliable, cost-effective designs, the radiation environment must be understood and accurately modeled. The nature of the environment varies greatly be...
Background: Educational environment is a major factor for teacher and student’s health, comfort and academic performance. Nowadays, technology improvement in classroom environment has exposed the users to ergonomics risk factors. The aim of this study was to assess the ergonomics of computer lab from student and expert’s point of view. Methods: This analytic descriptive cross secti...
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