Results 21 to 30 of about 11,319 (223)
Optimization and realization of SWIPT relay channel transmission rate based on rateless code [PDF]
, 2019 The optimization of the transmission rate and implementation of the simultaneous wireless information and power transfer in a relay system were studied.In a three-node two-hop system,the decode-and-forward protocol was employed by the relay node.One ...
Minghao DONG, Weijia LEI
core +1 more source
Multiple global change factors alter the scaling of nitrogen to phosphorus in alpine plants
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometry and allometry of nitrogen (N) and phosphorus (P) reflect nutrient absorption and dynamic allocation by plants, and can be regulated by global change factors (e.g. nitrogen enrichment, climate warming and altered precipitation). Yet, how multiple global
Jiapu Li +10 more
wiley +1 more source
Analysis on Time Distribution of Middle Class Women and its Influencing Factors — Based on the Investigation of Fujian province [PDF]
, 2011 随着社会进步和女性受教育程度不断提高，女性不再满足于好妻子、好母亲的家庭角色，而是走向市场，同男性展开平等竞争，追求自己的事业成就和人生价值。家庭和事业兼顾的双重角色必然带来双重的时间需求，在时间总量一定的前提下，女性必须对自己不同的时间需求作出取舍。不同的职业女性在家庭、职业、个人能力等方面各不相同，必然形成不同的时间分配方式。本文主要对中产阶层女性的时间分配形式进行了详细的描述性分析，并以劳动供给理论和社会性别理论为基础，对中产阶层女性时间分配的影响因素进行了探讨 ...
徐婷
core
Resource allocation scheme for IRS assisted heterogeneous SWIPT-NOMA system [PDF]
Considering the heterogeneity of users to be served (different receiver structures) and the diversity of service requirements in the future large-scale Internet of things, an IRS-assisted simultaneous wireless information and power transfer (SWIPT) non ...
JI Wei, LIU Ziqing
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Conservation Biology, EarlyView.Abstract Urgency to save species from extinction has prompted increased investment in law enforcement in protected areas. To date, such law enforcement has largely focused on increasing costs and reducing opportunities for offending. However, these resource‐intensive approaches are not always effective and can contribute to conflict between people and ...
Freya A. V. St. John +3 more
wiley +1 more source
Impacts of Time Allocation and Companionship by Parents on Psychological Health of Adolescents [PDF]
, 2014 目的：探讨我国青少年课外时间分配、父母陪伴及其交互作用对心理健康（抑郁、外化问题）的影响。方法：采用中国科学院心理研究所全国青少年心理健康数据库 2009年横断数据，对其中 4394名六年级至高三学生 （男50.04%， 年龄 15.45±2.39岁）数据进行分析。青少年时间分配问卷由青少年报告；抑郁和外化问题问卷由青少年自评； 家庭收入由家长报告。结果：青少年课外时间分配和父母陪伴对抑郁情绪和外化问题有显著预测作用，同时，课外时间分配与父母陪伴交互作用能显著预测青少年抑郁和外化行为问题。结论 ...
李海英, 郭菲, 陈祉妍, 黄峥
core
Policy Studies Journal, EarlyView.Abstract Despite the reality that advocates frequently expend significant resources to pass symbolic policies, this policy design has often been neglected by policy studies scholarship. We combine policy design and policy feedback theory to examine this oft overlooked policy design in practice using the case of California's human right to water law ...
Jenny Linder Rempel +1 more
wiley +1 more source
Institutions, in time: Designing feedback pathways for shared infrastructure transitions
Policy Studies Journal, EarlyView.Abstract Electric utilities, challenged by a rapidly unfolding energy transition, use many informal institutions to bridge across technologies and sectors. Little is known, however, about how electric utility systems and other polycentric systems' institutions‐in‐use vary and evolve over time.
Matthew Grimley +6 more
wiley +1 more source
Classroom Discourse Analysis of the U.S. Elementary Chinese Immersion Program——A Case Study of a School in Utah [PDF]
, 2016 本文采用理论和实证研究相结合的方法，从课堂互动、教师话语和学生话语三个角度对美国小学沉浸式汉语课堂话语进行了研究。全文共分六个部分： 第一部分，绪论。阐述了本研究的背景和意义及其理论基础；归纳分析了现有的对沉浸式教学，特别是沉浸式课堂话语的研究成果；介绍了本文的研究方法，包括研究对象、语料搜集过程和语料分析方法。 第二部分，美国小学沉浸式汉语课堂互动研究。包括师生话语比例、课堂话语结构、意义协商模式和话轮转换模式四方面。针对课堂互动的研究显示，小学沉浸式汉语课堂仍以教师为主导 ...
张洁泠
core
Review of Policy Research, EarlyView.Abstract This paper analyzes the causal relationship between the carbon tax's revenue recycling measures and political acceptability. The Irish carbon tax reform of 2019 forms the basis of the study. The findings are based on deductive content analysis and semi‐structured, elite interviews with key politicians, climate policy advisors, and other ...
Daniel Muth
wiley +1 more source