نتایج جستجو برای: natural tendencies

تعداد نتایج: 492354  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1370

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

2010
Simon Levin

Two conflicting tendencies can be seen throughout the biological world: individuality and collective behaviour. Natural selection operates on differences among individuals, rewarding those who perform better. Nonetheless, even within this milieu, cooperation arises, and the repeated emergence of multicellularity is the most striking example. The same tendencies are played out at higher levels, ...

1989
T. Shevchenko

The present paper is an attempt at a systematic description of regional and social acoustic charaoteristios of the Eng lish voioe within the framewerk o! one the ory and method. In a step-by-step analysis a series of experiments with natural speeoh wert:~ oond.uoted. wi th regards to the following aooustio oharacteristios: fundamental !requenoy,intensity,duration,long-term average speotrum.The ...

2002
FREDERICK H. BUTTEL

While environmental sociology and the sociology of natural resources nominally focus on the same subject matters, in practice the literatures in the two subdisciplines have tended to be quite separate intellectual enterprises. Environmental sociology and the sociology of natural resources have different origins, their practitioners tend to have distinctive institutional locations, their problem...

2016
Yoon-Sung Kim Young-In Song Hae-Chang Rim

Opinion mining is a natural language processing technique which extracts subjective information from natural language text. To estimate an opinion about a query in large data collection, an opinion retrieval system that retrieves subjective and relevant information about the query can be useful. We present an opinion retrieval system that retrieves subjective and query-relevant tweets from Twit...

2009
Mark O. Millard Firat Soylu

A particular vision of ubiquitous computing is offered to contribute to the burgeoning, dominant interaction paradigm in human-computer interaction (HCI). An engaged vision of ubiquitous computing (UbiComp) can take advantage of natural human abilities and tendencies for interaction. The HCI literature is reviewed to provide a brief overview of promising interaction styles and paradigms in orde...

2008
Heinz Langhals H. Langhals

There is a demand in modern technology for IT devices with high speeds of operation and high integration. Moore’s law [1] predicts a doubling of complexity for storage every two years and is one popular expression for the tendencies to increase the performance of devices concerning size and speed. One can ask if there is a natural limit for the speed of operation, what factors are limiting this...

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