迎产业东风,CEF首届中国基础电子元器件产业峰会圆满召开

4月9日-4月11日,由中国电子展(CEF)组委会、深圳市电子信息产业联合会主办的首届中国基础电子元器件产业峰会在深圳福田会展中心隆重举行,峰会邀请产学研协领域的先进代表共同探讨当前基础元器件产业在十四五规划蓝图下的新趋势和新机遇,以及在垂直领域与5G、物联网等新兴应用的协同发展和赋能作用。

The time‑varying causal relationship between the Bitcoin market and internet attention

The increasing attention on Bitcoin since 2013 prompts the issue of possible evidence for a causal relationship between the Bitcoin market and internet attention.Taking the Google search volume index as the measure of internet attention,time-varying Granger causality between the global Bitcoin market and internet attention is examined.Empirical results show a strong Granger causal relationship between internet attention and trading volume.Moreover,they indicate,beginning in early 2018,an even stronger impact of trading volume on internet attention,which is consistent with the rapid increase in Bitcoin users following the 2017 Bitcoin bubble.Although Bitcoin returns are found to strongly affect internet attention,internet attention only occasionally affects Bitcoin returns.Further investigation reveals that interactions between internet attention and returns can be amplified by extreme changes in prices,and internet attention is more likely to lead to returns during Bitcoin bubbles.These empirical findings shed light on cryptocurrency investor attention theory and imply trading strategy in Bitcoin markets.

Effect of livestock grazing and human uses on herbaceous species diversity in oriental beech(Fagus orientalis Lipsky) forests, Guilan, Masal, northern Iran

Plant diversity plays key ecological roles in forest ecosystems, including influencing succession, resilience and nutrient cycling. This study was conducted to investigate the effect of livestock grazing and human uses on herbaceous species diversity. We surveyed 50 ha of protected area and 50 ha of unprotected area to evaluate herbaceous species diversity in oriental beech （Fagus orientalis Lipsky） forests in northern Iran. We calculated and compared three indices each of diversity and evenness, and species richness between the two areas. Herbaceous cover was higher in the unprotected area while leaf litter depth and tree canopy cover were higher in the protected area. The diversity indices, H （Shan- non-Wiener index ）, N~ （McArthur index）, N2 （Hill＇s index）, EQ （Modified Nee index）, E,ar （Smith-Wilson index）, E5 （modified index of Hill） and R=S （species richness） and species richness R=S were greater in the protected area than in the unprotected area, suggesting that protection from grazing results in increased numbers of plants and species. The effect of land protection on plant diversity was more pronounced for evenness than for species richness and the positive correlation between diversity and evenness indices was higher than that between diversity and richness.

Does microfinance foster the development of its clients?A bibliometric analysis and systematic literature review

This paper conducts a scientometric analysis and systematic literature review to identify the trends in microfinance outcomes from the perspective of their recipients,specifically more vulnerable people,while also focusing on the demand side.Applying the keywords“co-occurrence networks”and“citation networks,”we examined 524 studies indexed on the ISI Web of Science database between 2012 and March 2021.The subsequent content analysis of bibliometric-coupled articles concerns the main research topics in this field:the socioeconomic outcomes of microfinance,the dichotomy between social performance and the mission drift of microfinance institutions,and how entrepreneurship and financial innovation,specifically through crowdfunding,mitigate poverty and empower the more vulnerable.The findings reinforce the idea that microfinance constitutes a distinct field of development thinking,and indicate that a more holistic approach should be adopted to boost microfinance outcomes through a better understanding of their beneficiaries.The trends in this field will help policymakers,regulators,and academics to examine the nuts and bolts of microfinance and identify the most relevant areas of intervention.

对欧洲金融市场稳定性的思考——以经济为视角

金融危机后,金融市场监管架构改革颇多。本文首先以资本要求规则的设计为例,对近期监管浪潮带来的改善金融稳定性的效果是否真如经常声称的那般显著提出质疑。其次,笔者以信贷基金监管为例,探讨监管范围扩大对企业融资市场竞争的消极影响。最后,通过分析更多以市场为导向的解决方案,笔者提出在欧洲范围内,要提高金融稳定性,最重要的措施可能是加强资本市场。

俄罗斯2016年Ilizarov技术国际大会会议通知

为纪念G.A.Ilizarov教授诞辰95周年,Ilizarov技术发明65周年,庆祝俄罗斯Ilizarov科学中心成立45周年,由国际ASAMI学会、俄罗斯ASAMI学会、北美ASAMI学会联合赞助,俄罗斯Ilizarov科学中心与美国德州Scottish Rite儿童医院共同承办的题为＂Ilizarov解读＂的＂俄罗斯2016年Ilizarov技术国际大会＂将在Ilizarov技术的发祥地俄罗斯库尔干召开。

Modular Hydrogels for Drug Delivery

The development of novel drug delivery systems is an essential step toward controlled site-specific administration of therapeutics within the body. It is desirable for delivery vehicles to be introduced into the body through minimally invasive means and, these vehicles should be capable of releasing drug to their intended location at a controlled rate. Furthermore, it is desirable to develop drug delivery systems that are capable of in vivo to suffer degradation and to deliver the drug completely, avoiding the need to surgically remove the vehicle at the end of its useful lifetime. Hydrogels are of particular interest for drug delivery applications due to their ability to address these needs in addition to their good biocompatibility, tunable network structure to control the diffusion of drugs and, tunable affinity for drugs. However, hydrogels are also limited for drug delivery applications due to the often quick elution of drug from their highly swollen polymer matrices as well as the difficulty inherent in the injection of macroscopic hydrogels into the body. This paper presents an overview to the advances in hydrogels based drug delivery. Different types of hydrogels can be used for drug delivery to specific sites in the gastrointestinal tract ranging from the oral cavity to the colon. These novel systems exhibit a range of several peculiar properties which make them attractive as controlled drug release formulations. Moreover, such materials are biocompatible and can be formulated to give controlled, pulsed, and triggered drug release profiles in a variety of tissues.

中国骨科医师分会外固定与肢体重建工作委员会2015年首期骨干医师培训班通知

由中国骨科医师分会外固定与肢体重建工作委员会（CEFS）与国家康复辅具研究中心附属康复医院（以下简称＂国家康复医院＂）联合主办的2015年首期外固定与肢体重建骨干医师培训班——上肢重建专题,定于2015年3月12日开班。该培训班主题：现代外固定与肢体重建概念、理论基础、国内外进展,外固定在上肢（包括手）形态与功能重建的基本知识、器械构型、手术适应证、治疗原则、术前决策,上肢安全穿针外固定方法、技术要点、手术风险规避,上肢重建术后管理、并发症的规避等。

Long-term effect of fire on herbaceous species diversity in oriental beech (Fagus orientalis Lipsky) forests in northern Iran

We studied the long-term impacts of natural burning on herbaceous species diversity 37 years after a fire occurred in the Roudbar forests of Guilan Province, northern Iran. Numerous studies have examined short-term changes in understory vegetation following wildfire; however, very few long-term studies are available or changes inferred from retrospective studies based on chro- nosequences. For this study, 170 ha of forest （85 ha, burned areas; 85 ha, unburned areas） were surveyed. Because the 1000 m2 plots were too large for detailed measurements of herbaceous species, we determined a sub-sample size according to the Whittaker＇s nested plot sampling protocol and minimal areas method. Hence, sub-plots of 32 m2 were used for herbaceous species measurements, which consisted of percent cover of each species based on the Domin criterion. We measured plant diversity （Shannon-Wiener index）, spe- cies richness （Margalef＇s index）, and evenness （Smith-Wilson index）. Mean percent cover, together with diversity, richness and even- ness, increased markedly in burned areas compared to unburned controls. This suggests that the biodiversity of these forests could be restored within 37 years after fire. However, the abundance of invasive species such as Rubus fruticosus and Bromus benekenii increased significantly in burned areas, but these could be controlled by relevant silvicultural operations.

伊朗青蜂科、锤角细蜂科、螯蜂科、环腹蜂科和细蜂科(膜翅目)的区系研究（英文）

报道了伊朗膜翅目Hymenoptera 5个科,青蜂科Chrysididae、锤角细蜂科Diapriidae、螯蜂科Dryinidae、环腹蜂科Figitidae和细蜂科Proctotrupidae的区系调查。采集和鉴定了青蜂科的6属12种、锤角细蜂科的4属5种、螯蜂科的5属7种、环腹蜂科的4属5种和细蜂科的3属3种。

Germination characteristics and diversity of soil seed banks and above-ground vegetation in disturbed and undisturbed oak forests

The destruction of natural ecosystems is an important issue in many parts of the world. In the west of Iran, a vast area of the Zagros Mountain range is covered by typical vegetation including several rare plant species, of which many are currently considered endangered by anthropogenic activities. Despite the important role of soil seed banks to help conserve these degraded plant communities, the floristic studies in the Zagros forests have only focused on aboveground vegetation. In this study, the characteristics of soil seed banks and above-ground vegetation were examined at two forest sites: an undisturbed control(Un) and a disturbed(D) site. The objectives of this study were 1) to investigate the diversity of above-ground vegetation and soil seed banks in disturbed and undisturbed forests, 2) to examine the soil properties and the germination characteristics of the soil seed bank in disturbed and undisturbed oak forests and 3) to estimate the potential of soil seed banks in the restoration of disturbed sites. The results show that soil properties between Un and D sites were significantly different with higher values of pH, NH 4-N, N tot, CEC, OC, clay and canopy percentage in the Un site than in the D site. The Simpson diversity, Margalef richness and evenness indices differed significantly between sites, either for the soil seed banks or the above-ground vegetation. After a period of 26 weeks, the germination speed and the mean daily number of germinants were significantly different between Un and D sites. Without other conservation measures, soil seed banks alone cannot result in a full recovery after severe disturbances in the oak forests of Zagros.

从2014中国(成都)电子展看移动网络游戏新热点

2014中国（成都）电子展即将于7月10日-12日，在成都世纪城新国际会展中心隆重举行。早在2012年，成都高新区就正式发布了《成都高新区管委会关于加快推进移动互联网产业发展的意见》，并出台《关于加快发展移动互联网产业发展的政策》，提出在5年内育千家企业、引十万人才，形成2000亿移动互联网产业集群，引领下一轮IT产业发展。其中，移动游戏被当作移动互联网产业的重点发展方向，给予大力支持。<br> 市场大爆炸<br> 过于的一年，可说是中国移动网络游戏爆发式增长的一年。截至2013年底，国内手机游戏市场超过月流水千万的产品已经增加到约30款，整个中国移动游戏的市场规模达到了112.4亿元，同比增长246.9%。2014年第一季度，移动网络游戏产值44.1亿元，环比增长39.9%，再创新高，市场规模已逐渐开始超过网页游戏。由是观之，移动网络游戏已经不再是各类论坛或业界谈论的趋势性话题，而是中国网络游戏市场增长的实实在在的亮点，当今的中国移动游戏产业面临着大好的发展机遇。

高新电子荟萃三展联动 第84届中国电子展10月开幕

电子信息业与制造业的相互融合,物联网、车联网的逐步实现,正一步步向真正的数字化生活迈进。2014年10月28日~30日,第84届中国电子展将亮相上海新国际博览中心,同期举办2014上海亚洲电子展、IC China 2014,超过1300多家企业将参展,60000多名买家和专业观众注册参观,展览面积达60000平方米。

从2014中国(成都)电子展看西部智能终端市场潜力

成都辐射西部近3亿人口，有广大的消费市场亟待开发，消费品市场规模整体增长也平均在10%以上，成为继沿海发达地区之后，最有发展潜力的市场，也是众多智能终端厂商的兵家必争之地，而中国（成都）电子展无疑是这些厂商近距离接触当地消费者并进行自我展示和宣传的前沿阵地。 我国智能终端产业已具有很好的发展基础 从产品市场看，近年来，以智能手机、平板电脑、智能电视等为代表的智能终端成为信息消费的新热点；从应用服务看，基于智能终端的平台属性，第三方开发企业围绕位置服务等开展了与世界市场需求紧密结合的运营服务，市场效果良好；从商业模式看，智能终端需求的增长和移动互联网应用的不断丰富，带来了用户消费行为的转变，推动了传统行业商业模式的创新，为传统行业转型带来了新的契机；从产业带动看，智能终端是整合产业链、撬动社会总需求的关键抓手。

2019年中国（上海）嵌入式系统安全论坛圆满落幕

2018年全球人口75亿,智能手机保有量大约30亿部。爱立信公司的物联网研究报告指出,2018年物联网设备的数量首次超过智能手机,到2021年物联网设备将超过290亿台。物联网应用繁花似锦、此消彼长。从最初的智能硬件、共享单车到今天的智慧城市、智能制造和新零售,随着人工智能和边缘计算技术的导入,智联网(AIoT)、汽车电子正在快速发展,万物智联的时代正在来临。

从2014中国(成都)电子展看中国元器件产业发展机遇

2014中国（成都）电子展即将于7月10日-12日，在成都世纪城新国际会展中心隆重举行。包括电阻、电容、电感、二/三极管、连接器等在内的元器件产品历来是中国电子展的核心展示内容，面向以成都为中心的西部地区，除在传统的军工、航太、船舶等领域有巨大需求外，在新兴的汽车、通信、医疗、物联网、新能源、仪器仪表等领域，元器件厂商也都有不小的发展空间。

从2014中国(成都)电子展看西部物联网与智慧城市建设

2014中国（成都）电子展即将于7月10日-12日，在成都世纪城新国际会展中心隆重举行。作为今年展会的一大亮点，物联网与智慧城市内容引人瞩目。随着物联网技术普及与国家智慧城市建设战略向西部转移，未来以成都为核心的西部地区，必将成为众多相关企业大展拳脚之地，而中国（成都）电子展为这些企业提供了一个展示自我实力与风采的极佳平台。 西部物联网产业将迎来重大发展机遇 作为西部大省，四川将物联网纳入了全省培育重点，将其作为增强产业竞争力，加快转变发展方式，培育新的经济增长点的重大举措，初步构建了以成都为中心，以绵阳、乐山、内江、遂宁等城市为支撑的物联网产业发展集聚群，全省力争在“十二五”期间实现“三个一千”的发展目标(即物联网企业一千家，物联网产值一千亿元，高端物联网人才一千名)。

从2014中国(成都)电子展看中国PCB产业结构调整

2014中国（成都）电子展即将于7月10日-12日，在成都世纪城新国际会展中心隆重举行。作为中国电子展的忠实追随者，今年又有大量PCB企业将亮相成都。通过对多家已报展企业的采访，我们感受到整个PCB产业对于结构调整的迫切与动力。

从2014中国(成都)电子展看测试测量行业新动向

作为中国（成都）电子展历年来的重要看点之一，汇聚了国内外众多知名企业的测试测量专区，从一定程度上，能够反映出测试测量行业的最新动向。 动向一：移动通信技术进步影响显著 智能手机通信标准已升至LT E、802.11a c等新兴无线通信标准，造成手机研发和产品测试复杂度大幅提高；因此，仪器厂商近期已竞相祭出新型LTE/WLAN多功能整合无线测试仪器，全方位支持各种RF测试，以协助系统厂商无论在研发或产品测试方面都能一“器”呵成，缩减整体测试时间和成本。与此同时，仪器厂商也已开始研发超高频段、高频宽和天线数组测试与验证技术，备战未来5G移动通信市场，同时助力5G在2020年实现商用。

从2014中国(成都)电子展看中国装备制造业现状

在中国（成都）电子展的众多参展企业中，电子制造设备企业群体一直是一支重要的参与力量。今年，这些企业的参展热情格外高涨，有多家企业向组委会透露，2014年整个设备行业景气要好于往年。 今年行业增长基础和动力进一步趋稳趋强 虽然行业发展仍面临国内外需求低迷、订单不足、产品利润下滑等诸多困难，存在进一步下行的风险，但是鉴于国内政策积极向好，2014年我国装备制造业仍将保持平稳增长，增长基础和动力进一步趋稳趋强，预计全年装备制造业增加值同比增长12%左右。其实从去年开始，装备制造业主营业务收入、利润等经济效益指标便总体呈较快回升趋势，且回升速度快于产销。加之管理费用和财务费用压力有所减轻，去年行业保持了平稳中速发展态势。