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1.
Conclusion In order to support online teaching and learning better, KD has developed a group of customized tools collectively known as
KD E-learning Toolkit. Among these tools, Customized Forums provide instructors with additional means to organize asynchronous
discussions; Team Builder and Team Presentation make team building and team collaboration more efficient; Hand-in System greatly
reduces instructors’ workload in downloading and uploading student files; and Test Tool allows students to take tests offline.
The utility of the Toolkit cuts across many dimensions in course design. For example, the Toolkit can be used in courses with
large student enrollments or small class size, in team-based or project-based courses or courses geared towards individual
learning; and the Toolkit could be used in most academic disciplines in the Arts, Sciences, Humanities, and in professional
education.
To support a highly professional student body, Kelly Direct Online Program at Indiana University Kelley School of Business
has sought from its inception to acquire and develop learning tools that facilitate asynchronous, interactive learning. The
KD E-Learning Toolkit supports this philosophy. 相似文献
2.
KD4-1、Z4、KD4-2、KD4-4、H95-1等新品系优于对照品种NC89，KD4-1表现最好，KD4-3次于对照NC89，表现最差。 相似文献
3.
[目的]了解胃癌患者血清中抗核抗体谱的特点.[方法]以鸡卵核为抗原,应用免疫印迹法对18份胃癌术前患者以及22份正常对照组(年龄和性别分布均无差异)的血清进行分析.[结果]胃癌术前患者血清中特异识别5条抗原条带的抗核抗体的阳性率显著高于正常对照组,靶抗原的蛋白分子质量及胃癌术前组血清中特异识别这5条抗原条带的抗核抗体的阳性率分别为:69KD(44.4％,8/18),62KD(50％,9/18),58KD(33.9％,7/18),44KD(22.2％,4/18),37KD(38.9％,7/18).[结论] 胃癌患者体内存在抗核抗体,其相对的靶抗原有多种. 相似文献
4.
ABSTRACTThis article is a report of a critical co-autoethnography action research (AR) study of Allan Feldman’s life in AR relative to the development of knowledge democracy (KD). For nearly 30 years he has been doing, studying, and writing about AR, first as a doctoral student and then as a professor. Prior to this he engaged in reflective practice as a secondary science teacher. In this study we ask how his life in AR has contributed to KD, and what actions he and others can take to increase the contribution of AR to KD. The meaning-making processes used throughout relied heavily on collaborative conversations with a critical friend (Frederick Bradley), self-reflective writing, and interrogation of the literature and Feldman’s previous writings. The findings suggest that while his work has been situated in democratic and critical aspects of AR, little of it fits in with current conceptions of KD. They also indicate that a reconfiguration of how we think about, practice, facilitate, and study AR might be necessary if we are to fall more in line with the ideals of KD. We contend the methods and results of our study can be used by others in the field, who seek to interrogate their participation in this way, and help them promote the democratic production, distribution, and use of knowledge. 相似文献
5.
黄海丽 《唐山师范学院学报》2010,32(5):66-69
从唐山师范学院花房中采集菘蓝根腐病病根并对其进行了病原菌的分离、纯化和鉴定及不同浓度、不同分子量的壳聚糖对菘蓝根腐病病原菌的室内抑菌作用。结果表明：分离纯化得到致病菌经鉴定为半知菌亚门（Deuteromycotina）、丝孢纲（Hyphomycetes）,丛梗孢目（Stilbellales）、瘤座孢科（Tuborculadales）、镰刀属（Fusarium）真菌。在一定浓度范围内,分子量为3KD、50KD的壳聚糖随着浓度的提高,其抑菌效果也逐渐增强,6mg／ml的效果最好;分子量为150KD时,3mg／ml的效果最好;在一定分子量范围内,除0．75mg／ml的浓度外,随着壳聚糖分子量的提高,其抑菌效果也逐渐增强,分子量150KD的效果最好;本试验中,最大抑菌率为61％。 相似文献
6.
目的:探讨川崎病(KD)早期诊断要点与减少心血管损伤的治疗方法.方法:对86例确诊KD的住院患儿的临床特点、实验室检查、心电图及超声心动图进行检查,对定期随访结果进行分析.结果:临床特点中肛周红与卡瘢红发生率分别为53.4%、40.7%;超声心动图检查发现冠状动脉扩张28例,冠状动脉瘤5例;用静脉丙种球蛋白(IVIG)治疗的冠状动脉病变发生率33.3%,仅用阿司匹林治疗的冠状动脉病变发生率64.2%,7d内使用IVIG治疗的冠状动脉病变发生率9.6%(P＜0.01).结论:对非典型KD应及时做超声心动图检查,早期足量使用IVIG可减少KD并发冠状动脉病变的发生. 相似文献
7.
ABSTRACTThe basic aim of this paper is to discuss the concept ‘Knowledge Democracy’ (KD) and what it can mean in the school context, its implications on knowledge production and dissemination and on the educational practices. We try to enrich this discussion by presenting action research projects to provide case studies of how thinking about KD can reshape educational practice. We consider that the discussion on KD has to be enriched as the concept seems very promising with good prospects towards school’s democratization. On the other hand, as it is quite new, it can encompass internal contradictions that can cause problems at the level of practice. So, we consider very important any contribution to this discussion not as another theoretical sample of the debate on the ‘politics of knowledge’, but because any improvement at the thinking of the issue can be reflected on school practices. Any challenge to traditional politics of knowledge can lead to a deeper understanding of the world of schooling and to transformations through new discourses and new approaches to teaching and learning in school. 相似文献
8.
目的：提取醋豆小分子多肽,分析降解的小分子肽的分子量分布谱及其意义。方法：用磷酸缓冲液提取小分子肽,用Tris-Tricine-SDS-PAGE凝胶电泳分析醋浸后蛋白质的降解。结果：大豆用醋和乙酸浸泡后,分子量大于66.4KD的均已降解,醋及乙酸浸泡液中几乎不含6.5KD以上的多肽,凝胶浓度为20%,并加入80%的甘油后,可见Marker清晰的9条带,低分子量可溶性多肽在这种条件下可以得到比较清晰的谱带。 相似文献
9.
Word processing is often considered an alternative writing mode or test accommodation for students with specific learning disorders who have handwriting difficulties (HD). Therefore, it is important for researchers and educators to understand the difficulties these students may encounter while using this technology. We examined the frequency of keyboarding difficulties (KD; i.e., slow keyboarding) among higher education students with HD, and the underlying functions (language, fine-motor, and attention) of these disabilities compared to students with only HD. Of the 50 students with HD, 24 percent were found to have KD. This group had significantly lower scores in phonological and orthographic skills, but not in fine-motor and attention functions, compared to students with HD alone. These results support models suggesting that handwriting and keyboarding share linguistic processes. They also suggest that for students with lower linguistic functions, word processing via keyboarding may not be an effective writing mode, and that these students may require tailored accommodation. 相似文献
10.
目的 探索非特异性溃疡性结肠炎(UC)血清学诊断方法。方法 采用DE-52离子交换层折及cNBr-Sepharose 4B亲和层析技术从人结肠粘膜组织中提取一种蛋白组分，经10％SDS-PAGE、IEF、CIE及Westem blot技术，对该蛋白分子量、等电点及免疫学等进行鉴定。结果 产物PI为5．8，分子量为40KD，免疫学鉴定发现其主要与UC患者血清起反应。结论 人结肠40KD蛋白可能是UC的一种自身抗原，血清中ACA可以作为UC的一个特异性指标。 相似文献
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12.
传统的转速-电流双闭环直流调速系统结构简单、设计较为方便,在工业中得到了广泛的应用。然而由于PI控制算法的局限性,使得传统直流调速系统鲁棒性较差,不能满足高精度动态性能应用场合的控制要求。本文采用Fuzzy(模糊)—PID复合控制方式,把转速的偏差的大小的绝对值和偏差变化率的绝对值作为模糊控制器的输入,用来调整转速环节PID控制器、、三个参数,实现控制器参数的在线自调整功能。仿真说明了所用方法的有效性。 相似文献
13.
Previous research and development with cognitive tools has been limited by an inadequate conceptualization of the complexity
underlying their nature and affordances for supporting learning and performance. This paper provides a new perspective on
cognitive tools through the lens of the theories of distributed cognition and expertise. The learner, tool, and activity form
a joint learning system, and the expertise in the world should be reflected not only in the tool but also in the learning
activity within which learners make use of the tool. This enhanced perspective is used to clarify the nature of cognitive
tools and distinguish them from other types of computer tools used in learning contexts. We have classified cognitive tools
considering how expertise is classified: domain-independent (general) cognitive tools, domain-generic cognitive tools, and
domain-specific cognitive tools. The implications are presented in reference to research, development, and practice of cognitive
tools. The capabilities of cognitive tools should be differentiated from those of the human, but regarded as part of the system
of expertise. Cognitive tools should be accompanied by appropriate learning activities, and relevant learner performance should
then be assessed in the context of tool use. 相似文献
14.
Michiel van Eijck Wolff-Michael Roth 《Journal of Science Education and Technology》2007,16(3):225-238
Given the central place IT-based research tools take in scientific research, the marginal role such tools currently play in
science curricula is dissatisfying from the perspective of making students scientifically literate. To appropriately frame
the role of IT-based research tools in science curricula, we propose a framework that is developed to understand the use of
tools in human activity, namely cultural-historical activity theory (CHAT). Accordingly, IT-based research tools constitute
central moments of scientific research activity and neither can be seen apart from its objectives, nor can it be considered
apart from the cultural-historical determined forms of activity (praxis) in which human subjects participate. Based on empirical
data involving students participating in research activity, we point out how an appropriate account of IT-based research tools
involves subjects’ use of tools with respect to the objectives of research activity and the contribution to the praxis of
research. We propose to reconceptualize the role of IT-based research tools as contributing to scientific literacy if students
apply these tools with respect to the objectives of the research activity and contribute to praxis of research by evaluating
and modifying the application of these tools. We conclude this paper by sketching the educational implications of this reconceptualized
role of IT-based research tools. 相似文献
15.
政策工具是实现政策对象发展目标的必要手段,开展职业教育政策工具运用研究是理解与把握我国职业教育发展的有效途径。以职业教育行政法规为研究对象,从基本政策工具和职业教育发展两个维度构建二维分析框架,通过内容编码、工具归类以及统计分析等步骤分析我国职业教育政策。研究表明,我国职业教育政策工具运用表现出环境型政策工具占据主导而供给型政策工具与需求型政策工具相对不足的特征。同时,从职业教育发展维度看,政策工具差异化明显,较为突出职业教育体系建设和保障机制。在此基础上,提出政府在未来政策工具选取及其运用时应更加注重均衡与协调,注重政策工具与职业教育发展的融合,从而优化并完善职业教育政策的导向作用。 相似文献
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通过实物照片,介绍了几种新型钻削刀具及其实施工艺。包括采用一把钻头实现钻、扩非定尺寸加工及沉孔加工、深孔加工的多工序复合刀具,加工深孔和微小孔用的特种刀具等,并介绍了刀具涂层技术的新进展。这些新型刀具和工艺的应用对提高生产效率和质量,降低制造成本有着实际意义。 相似文献
18.
学习与绩效技术中心（C4LPT）是由英国社会性学习与协作领域的资深专家简·哈特创办,专注于新技术在学习中的应用效果研究。该中心自2007年发起了学习工具排名统计,在全球范围内对2000多种学习工具的效用进行前100位动态排名,这可以看做是学习工具最新发展的“风向标”。无论是传统的学习工具,还是不断涌现的满足各种个性化需求的应用工具,通常都是功能鲜明,操作规范简捷,以所见即所得的方式支持个人知识建构和社会性协作建构。总体而言,学习工具注重支持社会性学习和群体学习,更关注对个体学习的需要和过程的支持;注重网络中个人学习过程的知识管理及社会性知识共享;学习工具的功能更精、更专。对TOP100学习工具类型分布、排名变化和新入选工具的分析,有利于让国内教育界的实践者和研究者深入了解当前国际上广泛应用、各有专长、效用认同度高的学习工具,拓展对学习工具的理解,促进对新技术的教与学应用。 相似文献
19.
以国家层面颁布的32份有关农民工职业教育与培训政策文本为研究对象,采用内容分析法,借助Nvivo质性分析软件,从政策工具和政策发展过程两个维度,探究我国农民工职业教育与培训实施过程中政策制定存在的问题。研究发现:农民工职业教育与培训政策随着发展过程、政策工具的使用逐步丰富和完善,政策工具使用呈现出显著的非均衡性。因此建议,降低环境型政策工具的使用,并合理优化其内部结构;适度增加供给型政策工具的使用,主要加强师资建设政策工具的使用;着力增加需求型政策工具的使用,充分发挥市场机制对农民工职业教育与培训的拉动作用。 相似文献
20.
肖林根 《乐山师范学院学报》2014,(7):112-115
教育劳动工具包括"人"和"物"两类。"人"以"教师"为典型,"物"以"教材"为代表。这两类‘工具’都应有利于确保和提升师生的精神自由,体现教育作为德性生活的意蕴。"教材"的德性主要表现为正确的、科学的且具有生长潜力的课程知识,学科逻辑与心理逻辑的统一和促进学习者意义建构的价值性特征三方面,"教师"的德性主要表现为适切的知识架构、积极的道德人格和自觉的审美追求三方面。通过发掘教育劳动工具的德性,有利于推进教育劳动成为道德性的活动。 相似文献