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儿童的同伴关系和后期适应问题

心理发展与教育 1989年第2期5卷 33-37,53页

作者： J.g.Parker S.r.Asher 方晓义

低接纳儿童(low—accepted children)易在后期适应中出现问题,换句话说,儿童期的同伴关系障碍(peer—relationship disturbes)能够预测后期的适应问题。这个假设多次出现在有关儿童社会性发展的文献中。本文将用已有的研究结果检验预测... 详细信息

低接纳儿童(low—accepted children)易在后期适应中出现问题,换句话说,儿童期的同伴关系障碍(peer—relationship disturbes)能够预测后期的适应问题。这个假设多次出现在有关儿童社会性发展的文献中。本文将用已有的研究结果检验预测源:接纳性、攻击行为、羞怯/退缩行为和被预测者;即退学、犯罪、精神病之间的关系,以此说明假设是否得到证实。一、退学在美国,进入学校的儿童每5个就有一个退学,其中三分之一早在八年级以前就离开了学校。退学的原因很多,但多数是为了逃避学习上遭受的挫折。我们搜集到在这一领域进行的研究共39项。被试包括学校儿童(37项)和临床儿童(低接纳儿童和有异常行为的儿童,2项)。在所有研究中,较典型的是先在五。

关键词：忽视儿童低接纳适应问题学校儿童教师评价社会测量异常行为攻击行为行为类型同伴接纳

The Extension Degree Conditions for Fractional Factor

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Acta Mathematica Sinica,English Series 2020年第3期36卷 305-317页

作者： Wei gAO Wei Fan WANg Juan L.g.gUIrAO School of Information Science and Technology Yunnan Normal UniversityKunming 650500P.R.China Department of Mathematics Zhejiang Normal UniversityJinhua 321004P.R.C hina Departamento de Matematica Aplicada y Estadistica.Universidad Politecnica de Cartagena Hospital de Marina30203-CartagenaRegion de MurciaSpain

In gao’s previous work, the authors determined several degree conditions of a graph which admits fractional factor in particular settings. It was revealed that these degree conditions are tight if b = f(x) = g(x) = a for all vertices x in g. In this paper, we continue to discuss these degree conditions for admitting fractional factor in the setting that several vertices and edges are removed and there is a difference Δ between g(x) and f(x) for every vertex x in g. These obtained new degree conditions reformulate gao’s previous conclusions, and show how Δ acts in the results. Furthermore,counterexamples are structured to reveal the sharpness of degree conditions in the setting f(x) =g(x) + Δ.

关键词： Fractional factor degree condition independent set

Distribution patterns of fire r.g.me in the Pendjari Biosphere reserve, West Africa

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干旱区科学:英文版 2023年第10期15卷 1160-1173页

作者： Omobayo g ZOFFOUN Chabi A M S DJAgOUN EtotépéA SOgBOHOSSOU Laboratory of Applied Ecology(LEA) Faculty of Agronomic SciencesUniversity of Abomey-Calavi(UAC)Cotonou 01 BP 526Benin geoEnvironmemt and Biodiversity Conservation(geoEBC)NgO Cotonou 02 BP 775Benin Department of Environment Senghor University1 Place Ahmed OrabiA1 Mancheya BP 415Alexandria 21111Egypt

Pendjari Biosphere reserve(PBr),a primary component of the W-Arly-Pendjari transboundary biosphere reserve,represents the largest intact wild ecosystem and pristine biodiversity spot in West *** savannah ecosystem has long been affected by fire,which is the main ecological driver for the annual rhythm of life in the *** the fire distribution patterns will help to improve its management plan in the *** study explores the fire r.g.me in the PrB during 2001–2021 in terms of burned area,seasonality,fire frequency,and mean fire return interval(MFrI)by analysing moderate resolution imaging spectroradiometer(MODIS)burned area *** indicated that the fire season in the PBr extends from October to May with a peak in early dry season(November–December).The last two fire seasons(2019–2020 and 2020–2021)recorded the highest areas burned in the PBr out of the twenty fire seasons *** the twenty years period,8.2%of the reserve burned every 10–11 months and 11.5%burned *** largest part of the reserve burned every one to two years(63.1%),while 8.3%burned every two to four years,5.8%burned every four to ten years,and 1.9%burned every ten to twenty *** 1.3%of the entire area did not fire during the whole study *** returned to a particular site every 1.39 a and the annual percentage of area burned in the PBr was 71.9%.The MFrI(MFrIgrasslands,shrub savannah,tree savannah,woodland savannah,and rock *** r.g.me must be maintained to preserve the integrity of the *** this context,we suggest applying early fire in tree and woodland savannahs to lower.g.ass height,and late dry season fires every two to three years in shrub savannah to limit the expansion of shrubs and *** propose a laissez-faire system in areas in woodland savannah where the fire frequency is sufficient to allow tree *** findings highlight the utility of remote sensing in defining the geographical and

关键词： fire season fire frequency West African savannah moderate resolution imaging spectroradiometer(MODIS) burned area

Characterisation of the optical properties of IngaN MQW structures using a combined SEM and CL spectral mapping system

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Journal of Semiconductors 2011年第1期32卷 1-2页

作者： Mark N.Lockrey Matthew r.Phillips Physics and Advanced Materials University Technology

We demonstrate the ability of a combined scanning electron microscope and cathodoluminescence （CL） spectral mapping system to provide important spatially resolved information. The degree of inhomogeneity in spectral output across a multi-quantum well sample is measured using the SEM-CL system as well as measuring the efficiency roll-off with increasing carrier concentration. The effects of low energy electron beam modification on the IngaN/gaN multi quantum wells have also been characterized.

关键词： IngaN/gaN quantum wells cathodoluminescence spectral mapping electron beam irradiation

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功能电刺激系统通信接口设计

中国科学技术大学学报 1997年第1期27卷 31-38页

作者：冯焕清 g.Borges r.Kobetic E.B.Marsolais 中国科学技术大学美国克利夫兰退伍军人医院步态研究室

介绍一个用于实验室功能电刺激系统的通信接口．它采用双端口ＲＡＭ来实现高档ＰＣ机和基于Ｖ４０微处理器的便携式刺激仪之间的通信，采集实验数据，传送控制命令、刺激模式表和程序等，有数据传送速率高、便于编程和用户界面友好等特点。

关键词：截瘫病电刺激系统人工走路通信接口设计

Thermoelectric converter based on metal-dielectric-semiconductor-metal structures for cooling processors

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Journal of Advanced Dielectrics 2020年第1期10卷 42-47页

作者： g.Ya.Karapetyan I.A.Parinov g.Parchiy I.I.Vorovich Institute of Mathematics Mechanics and Computer Sciences Southern Federal University rostov-on-Don 344090 Russia

A thermoelectric transducer based on MDSM structures of the field-effect transistor(FET)type is proposed,in which the thermal energy of the environment is converted into electrical *** use a new principle of converting thermal energy into electrical *** show that with the help of such a converter,it is possible to dramatically increase the efficiency of processors due to the heat generated by the processor is converted by this converter again into electricity that transfers to the processor.

关键词： Crystal growth thermoelectric converter field-effect transistor metal-dielectric-semiconductor-metal(MDSM)structure processor

Scoring Cercospora Leaf Spot on Sugar Beet:Comparison of UgV and UAV Phenotyping Systems

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Plant Phenomics 2020年第1期2卷 225-242页

作者： S.Jay A.Comar r.Benicio J.Beauvois D.Dutartre g.Daubige W.Li J.Labrosse S.Thomas N.Henry M.Weiss F.Baret INrAE UMR 114 EMMAHUMT CAPTEF-84914 AvignonFrance HIPHEN SAS 84000 AvignonFrance ArVALIS-Institut du végétal 84000 AvignonFrance Florimond Desprez 59242 Capelle-en-PévèleFrance

Selection of sugar beet(Beta vulgaris L.)cultivars that are resistant to Cercospora Leaf Spot(CLS)disease is critical to increase *** selection requires an automatic,fast,and objective method to assess CLS severity on thousands of cultivars in the *** this purpose,we compare the use of submillimeter scale rgB imagery acquired from an Unmanned ground Vehicle(UgV)under active illumination and centimeter scale multispectral imagery acquired from an Unmanned Aerial Vehicle(UAV)under passive *** variables are extracted from the images(spot density and spot size for UgV,green fraction for UgV and UAV)and related to visual scores assessed by an *** show that spot density and green fraction are critical variables to assess low and high CLS severities,respectively,which emphasizes the importance of having submillimeter images to early detect CLS in field *** sensitivity to CLS can then be accurately retrieved based on time integrals of UgV-and UAV-derived *** UgV shows the best estimation performance,UAV can show accurate estimates of cultivar sensitivity if the data are properly *** and limitations of UgV,UAV,and visual scoring methods are finally discussed in the perspective of high-throughput phenotyping.

关键词： illumination millimeter critical

AQUEOUS STABLE FrEE rADICAL POLYMErIZATION PrOCESSES

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Chinese Journal of Polymer Science 2004年第4期22卷 309-312页

作者： Andrea r. Szkurhan Michael K. georges University of Toronto at Mississauga 3359 Mississauga Road North South Building Mississauga Ontario L5L 1C6University of Toronto at Mississauga 3359 Mississauga Road North South Building Mississauga Ontario L5L 1C6

An overview of aqueous polymerizations, which include emulsion, miniemulsion and suspension polymerizations, under stable free radical polymerization (SFrP) conditions is presented. The success of miniemulsion and suspension SFrP polymerizations is contrasted with the difficulties associated with obtaining a stable emulsion polymerization. A recently developed unique microprecipitation technique is referenced as a means of making submicron sized particles that can be used to achieve a stable emulsion SFrP process.

关键词： Stable free radical polymerization Living-radical polymerization Aqueous polymerization Miniemulsion polymerization Emulsion polymerization Suspension polymerization

New advances in visual computing for intelligent processing of visual media and augmented reality

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Science China(Technological Sciences) 2015年第12期58卷 2210-2211页

作者： WANg JuHong ZHANg SongHai MArTIN ralph r. Department of Computer Science and Technology Tsinghua University School of Computer Science & Informatics Cardiff University

Visual imagery constitutes the most important sensory information for *** entire field of acquiring,analyzing and synthesizing visual data by means of computers is called visual *** has an extraordinarily wide range of applications,including for example:industrial quality control,street view and driver assistance systems,robot navigation,multimedia systems,and computer.g.mes.

关键词： Augmented reality Intelligent computing