منابع مشابه
Internet Access at Home and its Relationship to Well-being in Deprived Areas of London
Purpose: The existing studies of the association between Internet usage and well-being have produced contradictory results. This study explores the associations between Internet access at home and well-being, as well as other lifestyle variables. Design/methodology/approach: The study was done in a probability sample of 800 community-dwelling adults aged 16 and over in six most deprived areas o...
متن کاملMeasures of exposure to the Well London Phase-1 intervention and their association with health well-being and social outcomes
To cite: Phillips G, Bottomley C, Schmidt E, et al. J Epidemiol Community Health 2014;68:597–605. INTRODUCTION Measuring variation in implementation of public health interventions and levels of population exposure is an important part of evaluation. In the context of effectiveness trials, exposure data can be used to interpret the impact of the intervention on the study outcomes. In interventio...
متن کاملAn Effective Well Development Method for Deep Screen Completed Wells
In Lund, Sweden productivity problems were encountered during flow testing of a 1927 m deep gravel packed screen completed well and it became apparent that well development was needed to increase productivity. A hydrojetting system using coiled tubing in combination with simultaneous pumping was developed and tested and found to be successful. To verify whether the well development improved the...
متن کاملWhy does deep and cheap learning work so well?
We show how the success of deep learning depends not only on mathematics but also on physics: although well-known mathematical theorems guarantee that neural networks can approximate arbitrary functions well, the class of functions of practical interest can be approximated through “cheap learning” with exponentially fewer parameters than generic ones, because they have simplifying properties tr...
متن کاملmetallicity of starburst galaxies in chandra deep field south (cdf-s) , at 0.5
چکیده یکی از پارامترهای اصلی در دنبال کردن تاریخچه ی تشکیل ستاره ها و تحول کهکشان ها، مطالعه ی میزان فراوانی عناصر آن ها است. در این پایان نامه برای مطالعه ی همبستگی میان فراوانی فلزی و جرم ستاره ای کهکشان ها، از داده های طیفی 89 کهکشانِ ستاره زا استفاده شده است. طیف ها توسط طیف نگار فورس2 از میدان ژرف جنوبی چاندرا گرفته شده و جابه جایی به سرخ طیف ها همه بزرگتر از نیم و کوچکتر از یک هستند. جر...
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ژورنال
عنوان ژورنال: Nature
سال: 1877
ISSN: 0028-0836,1476-4687
DOI: 10.1038/016002a0