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    题名 作者 年代 出处 被引量
1网络学习中的协作知识建构显示文摘协作知识建构是网络学习研究的重要内容,它强调了学习者必须参与到协作学习伙伴之间的讨论和交流中,与学习伙伴分享学习资源、观念和理解,并在该过程中增强个体对知识的理解或修正已经形成的错误观点,从而实现对新知识的建构。本文在对协作知识建构模型、协作知识建构过程、计算机支持的协作知识建构、协作知识建构社区以及设计协作知识建构环境的原则等进行深入分析与探讨的基础上,较为全面地论述了网络学习环境中协作知识建构新模式。赵建华 David McConnell 2007外语电化教学2007,,3:35
2农民生产投资的影响因素分析——基于监督分组的主成分回归分析显示文摘本文提出基于监督分组的主成分回归分析法(Supervised Classification-based Principal Component Regress Analysis)用以分析存在互相关的各因素对目标因素的贡献。先将自变量按照理论及实际经验进行分类,然后各类分别进行主成分分析,每类得出的主成分与因变量做回归分析,从而得出自变量与因变量的关系。本文采用1993—2007年陕西省的时间序列数据实证分析了影响农民生产投资的诸多因素,包括农民家庭纯收入、农民生活消费支出、家庭经营费用支出、农户耕地及灌溉面积、生产资料及农产品价格、公共投资等。分析显示当前农民投资的主要来源是家庭收入,农产品价格、公共投资、灌溉面积都对农户投资有显著影响。尹文静 王礼力 Ted McConnel 2011农业技术经济2011,,2:8
3Political Connections and Corporate Bailouts显示文摘MARA FACCIO RONALD W. MASULIS JOHN J. McCONNELL 2006The Journal of Finance2006,,:6
4农村公共投资对农民生产投资影响的区域差异——基于卡尔曼滤波的时序列分析显示文摘本文选取东部地区的山东省、中部地区的安徽省、西部地区的陕西省作为研究对象,采用带有时变参数的状态空间模型分析1990~2007年全国各地区农村公共投资和农民生产投资之间的关系。研究发现,农村公共投资对农民生产投资的影响不仅因为不同地区市场因素、农户特征等因素的不同而对农民生产投资表现出不同的影响程度,而且这种影响关系随着时间变化产生波动。这一关系的跳跃性变化往往与国家重要政策的出台和经济水平的迅速发展密切相关。尹文静 Ted McConnel 2012中国农村观察2012,,3:5
5农村公共投资对农民收入影响地域差异的时变分析显示文摘以山东省、安徽省、陕西省作为研究对象,采用带有时变参数的状态空间模型分析1990—2010年间这三个省份农村公共投资对农民收入的影响,并通过卡尔曼滤波的求解方法得出农村公共投资对农民收入影响随着时间变动发生波动的曲线图。研究发现农村公共投资对农民收入的影响不仅因不同地区经济水平、社会环境、地理气候、人文背景等因素的不同而表现出不同的影响程度,而且这种影响关系随着时间变化产生波动。尹文静 Ted McConnel 2015河北经贸大学学报2015,36,1:4
6Fabrication and study of supercapacitor electrodes based on oxygen plasma functionalized carbon nanotube fibers显示文摘Dry-spun Carbon Nanotube(CNT)fibers were surface-modified by atmospheric pressure oxygen plasma functionalization using a well controlled and continuous process.The fibers were characterized by scanning electron microscopy(SEM),Raman spectroscopy,and X-ray Photoelectron Spectroscopy(XPS).It was found from the conducted electrochemical measurements that the functionalized fibers showed a 132.8% increase in specific capacitance compared to non-functionalized fibers.Dye-adsorption test and the obtained Randles-Sevcik plot demonstrated that the oxygen plasma functionalized fibers exhibited increased surface area.It was further established by Brunauer-Emmett-Teller(BET)measurements that the surface area of the CNT fibers was increased from 168.22 m^2/g to 208.01 m^2/g after plasma functionalization.The pore size distribution of the fibers was also altered by this processing.The improved electrochemical data was attributed to enhanced wettability,increased surface area,and the presence of oxygen functional groups,which promoted the capacitance of the fibers.Fiber supercapacitors were fabricated from the oxygen plasma functionalized CNT fiber electrodes using different electrolyte systems.The devices with functionalized electrodes exhibited excellent cyclic stability(93.2% after 4000 cycles),flexibility,bendability,and good energy densities.At 0.5 m A/cm^2,the EMIMBF4 device revealed a specific capacitance,which is 27% and 65%greater than the specific capacitances of devices using EMIMTFSI and H2SO4 electrolytes,respectively.The practiced in this work plasma surface processing can be employed in other applications where fibers,yarns,ribbons,and sheets need to be chemically modified.Paa Kwasi Adusei Seyram Gbordzoe Sathya Narayan Kanakaraj Yu-Yun Hsieh Noe T.Alvarez Yanbo Fang Kevin Johnson Colin McConnell Vesselin Shanov 2020Journal of Energy Chemistry2020,29,1:4
72002~2005年期间萨斯喀彻温省儿科三级医疗中心因呼吸道合胞病毒感染住院的儿童病例分析(英文)显示文摘中文概呼吸道合胞病毒(RSV)是2岁以下儿童呼吸道感染最常见的病原体,也是引起婴儿病毒感染所致死亡的主要原因。到目前为止,尚未见加拿大萨斯喀彻温省RSV流行病学的研究报道。本研究的目的是描述2002年7月至2005年6月期间在萨斯喀彻温省的两个儿科三级医疗中心,即皇家大学医院(RUH)和萨斯卡通和里贾纳总医院(RGH),因RSV感染住院的儿童的流行病学特点及疾病严重程度,其中部分患儿有帕利珠单抗(palivizumab)预防史。 在上述2个医疗中心住院时间≥24h的儿童(年龄:从出生到16岁11个月)经实验室病毒鉴定确诊为RSV感染的儿童纳入本研究。在RUH中心,患儿鼻咽部分泌物经直接荧光抗体(DFA)检测阳性者确诊为RSV感染。如果DFA为阴性,则对该标本进行病毒培养。在RGH中心,所有患儿鼻咽部分泌物标本均进行DFA检测和病毒培养。确诊后对患儿的健康记录进行回顾性分析,内容包括患儿的人口统计信息、转诊模式、帕利珠单抗预防史、感染严重程度及转归。目前尚无统一的感染严重程度的判断标准,本研究根据住院时间、是否需要小儿重症监护及持续时间、是否机械通气等进行评估。在研究期间,萨斯喀彻温省的帕利珠单抗预防的标准与加拿大儿科学会(CPS)的建议一致。 2002年7月至2005年6月3年期间,总共有590名RSV儿童(包括324名男童)住院治疗,共602次住院记录,其中12名儿童住院1次以上。入院时患儿中位实足年龄为5.3个月,平均住院时间为4.0d(范围:〈1d至121.2个月)。82.4%的患儿出生时胎龄≥36周,7.5%为33-35周,9.5%≤32周。RSV感染住院情况呈现季节性模式,其中大部分发生在三月和六月。患儿最常见的临床表现为细支气管炎(70.2%),38.1%表现为肺炎,17.3%为上呼吸道感染,0.5%表现为哮吼(患儿可能同时有1个以上的临床表现)。478例(81.0%)为RSV轻度至中度感染,110例(18.6%)为重度感染。25.1%的患儿有继发性细菌感染。共有39例(6.7%)需要入住儿科重症监护病房(PICU),中位入住时间为5.0d。其中,22例重症患儿(56%)需要机械通气(通气时间中位数6.0d),14例重症患儿(36%)有继发性细菌感染。与入住普通病房的患儿比较,PICU患儿大多有如下情况:入院时年龄较小(P〈0.01),有潜在的肺部疾病(P〈0.01)或先天性心脏疾病(P=0.01),有两个或更多潜在的疾病(P〈0.01),与其他儿童共同居住(P=0.02)。在本研究过程中,2例儿童死亡,但均与RSV感染无关。 本研究有22例患儿在入院前接受过帕利珠单抗预防RSV感染,其中18例已完成至少2个月的剂量,17例(77%)有1个或以上的慢性疾病,14例(64%)出生时胎龄不超过32周。入院时中位实足年龄为5.6个月(范围0-27.5个月),中位住院时间为9.5d(范围2-271d)。大多数儿童(17/22)为轻度至中度RSV感染。 小结:RSV在萨斯喀彻温省保持较高的发病率,男性、实足年龄小于1岁的足月儿或晚期早产儿发病率较高。细支气管炎是最常见的临床表现。大多数患儿呈轻度至中度感染,但约7%的患儿需要重症监护。较小的实足年龄、潜在的肺部或心脏疾病或多个潜在疾病等因素均有可能导致患儿需要重症监护。此外,与其他孩子同住也有可能是导致患儿需要重症监护的一个因素。需要重症监护的患儿往往胎龄大于35周。虽然部分接受过帕利珠单抗预防的患儿也感染了RSV,但是其大部分患儿的病情为轻度至中度。这些曾接受过帕利珠单抗预防的患儿更可能有潜在疾病,并且出生时胎龄往往小于32周。在本研究中,无一例因RSV感染而引起的死亡病例。本研究尚浅,需要开展更深入的研究,以进一步确定RSV患儿,特别是PICU患儿以及曾接受过帕利珠单抗预防却仍然受到RSV感染的患儿的特征。Ayisha Kurji Ben Tan Jaya Bodani Bonnie Janzen Athena McConnell Rachana Bodani Derek Rajakumar Anil Sharma Koravangattu Sankaran 2014中国当代儿科杂志2014,16,10:3
8Consensus Panel Recommendation for Incorporating Lipoprotein-Associated Phospholipase A 2 Testing into Cardiovascular Disease Risk Assessment Guidelines显示文摘Michael H. Davidson Marshall A. Corson Mark J. Alberts Jeffrey L. Anderson Philip B. Gorelick Peter H. Jones Amir Lerman Joseph P. McConnell Howard S. Weintraub 2008The American Journal of Cardiology2008,,12:3
9Equity ownership and the two faces of debt显示文摘John J. McConnell Henri Servaes 1995Journal of Financial Economics1995,,1:3
10Relations among the Implicit Association Test, Discriminatory Behavior, and Explicit Measures of Racial Attitudes显示文摘Allen R. McConnell Jill M. Leibold 2001Journal of Experimental Social Psychology2001,,5:2
11GD2+ cancer stem cells in triple-negative breast cancer:mechanisms of resistance to breast cancer therapies显示文摘Research has led to the development of tailored treatment options for different cancers in different patients.Despite some treatments being able to provide remarkable responses,nearly all current treatments encounter the same issue:resistance.Here,we discuss our experiences with how breast cancers resist therapies.The focus of our discussion revolves around the cancer stem cell subpopulation and their mechanisms for resistance.Khoa Nguyen Emily McConnell Orielle Edwards Bridgette M.Collins-Burow Matthew E.Burow 2022Cancer Drug Resistance2022,5,3:2
12肺动脉高压患者的负荷适应性显示文摘已知右心室对压力超负荷的适应是肺动脉高压(pulmonary arterial hypertension,PAH)患者预后的主要影响因素。为了评估右心室适应和负荷之间的关系,然后比较PAH中不同负荷适应性指数的预后价值,Amsallem及其同事纳入推导队列(n=85)和验证队列(n=200),使用3种方法评估负荷适应性:①脑室动脉耦合的替代物(例如右心室面积变化/收缩末期面积);刘莉 叶鹏 Amsallem M Boulate D Aymami M Guihaire J Selej M Huo J Denault AY McConnell MV Schnittger I Fadel E Mercier O Zamanian RT Haddad F 2017中华高血压杂志2017,25,8:2
13Accelerated infliximab infusions for inflammatory bowel disease improve effectiveness显示文摘AIM:To study the safety and effectiveness associated with accelerated infliximab infusion protocols in patients with inflammatory bowel disease(IBD).METHODS:Original protocols and infusion rates were developed for the administration of infliximab over 90-min and 60-min.Then the IBD patients on stable maintenance infliximab therapy were offered accelerated infusions.To be eligible for the study,patients needed a minimum of four prior infusions.An initial infusion of 90-min was given to each patient;those tolerating the accelerated infusion were transitioned to a 60-min infusion protocol at their next and all subsequent visits.Any patient having significant infusion reactions would be reverted to the standard 120-min protocol.A change in a patient's dose mandated a single 120-min infusion before accelerated infusions could be administered again.RESULTS:The University of Virginia Medical Center's Institutional Review Board approved this study.Fifty IBD patients treated with infliximab 5mg/kg,7.5mg/kg and 10mg/kg were offered accelerated infusions.Forty-six patients consented to participate in the study.Nineteen(41.3%) were female,five(10.9%) were African American and nine(19.6%) had ulcerative colitis.The mean age was 42.6 years old.Patients under age 18 were excluded.Ten patients used immunosuppressive drugs concurrently out of which six were taking azathioprine,three were taking 6-mercaptopurine and one was taking methotrexate.One of the 46 study patients used corticosteroid therapy for his IBD.Seventeen of the patients used prophylactic medications prior to receiving infusions;six patients received corticosteroids as pre-medication.Four patients had a history of distant transfusion reactions to infliximab.These reactions included shortness of breath,chest tightness,flushing,pruritus and urticaria.These patients all took prophylactic medications before receiving infusions.46 patients(27 males and 19 females) received a total of fifty 90-min infusions and ninety-three 60-min infusions.No infusion reactions were reported.There were no adverse events,including drug-related infections.None of the patients developed cancer of any type during the study timeframe.Total cost savings for administration of the both 90-min and 60-min accelerated infusions compared to standard 120-min infusions was estimated to be $53 632($116 965 vs $63 333,P=0.001).One hundred and eighteen hours were saved in the administration of the accelerated infusions(17 160 min vs 10 080 min,P=0.001).In the study population,overweight females [body mass index(BMI)>25.00kg/m2] were found to have statistically higher BMIs than overweight males(mean BMI 35.07±2.66kg/m2 vs 30.08±0.99kg/m2,P=0.05),finding which is of significance since obesity was described as being one of the risk factors for Crohn's disease.CONCLUSION:We are the first US group to report substantial cost savings,increased safety and patient satisfaction associated with accelerated infliximab infusion.John McConnell Simona Parvulescu-Codrea Brian Behm Beth Hill Elizabeth Dunkle Karen Finke Kathryn Snyder Anne Tuskey Debbie Cox Beth Woodward 2012World Journal of Gastrointestinal Pharmacology and Therapeutics2012,3,5:2
14Outer membrane vesicles as an acellular vaccine against Acinetobacter baumannii显示文摘Michael J. McConnell Carlos Rumbo Germán Bou Jerónimo Pachón 2011Vaccine2011,,34:2
15Equity ownership and the two faces of debt显示文摘John J. McConnell Henri Servaes 1995Journal of Financial Economics1995,,1:2
16Methods of Operative Fixation of the Acromio-Clavicular Joint: A Biomechanical Comparison显示文摘Alison J McConnell Daniel J Yoo Rad Zdero Emil H Schemitsch Michael D McKee 2007Journal of Orthopaedic Trauma2007,,4:2
17Do institutional investors exacerbate managerial myopia?显示文摘Sunil Wahal John J McConnell 2000Journal of Corporate Finance2000,,3:2
18Local Production of Lipoprotein-Associated Phospholipase A2 and Lysophosphatidylcholine in the Coronary Circulation: Association With Early Coronary Atherosclerosis and Endothelial Dysfunction in Humans显示文摘Shahar Lavi Joseph P. McConnell Charanjit S. Rihal Abhiram Prasad Verghese Mathew Lilach O. Lerman Amir Lerman 2007Circulation2007,,21:2
19The role of inflammation in the pathogenesis of colorectal cancer显示文摘Beth B. McConnell Vincent W. Yang 2009Current Colorectal Cancer Reports2009,,2:2
20The role of the media in corporate governance: Do the media influence managers’ capital allocation decisions?显示文摘Baixiao Liu John J. McConnell 2013Journal of Financial Economics2013,,:2
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