在线期刊的定价研究     

Douglas LaFrenier  何艳平 《高校图书馆工作》2008,28(1):11-13

1 引言 美国物理联合会(American Institute of Physics,简称AW)是一家非营利性的机构,成立于1931年,旨在促进物理学知识的传播和物理研究的发展与利用,目前美国物理联合会已发展了美国物理学会(American Physics Society)等10个成员学会.  相似文献   

Memory for empty time intervals in pigeons     

Douglas S. Grant 《Learning & behavior》2001,29(4):293-301

Pigeons were trained to discriminate short (2 sec) and long (8 sec) empty intervals that began each trial. In group consistent, onset of an empty interval was marked by a brief presentation of red keylight, and termination of the interval was marked by a brief presentation of green keylight. In group inconsistent, red and green served equally often as the first and second markers across trials. Testing revealed that, in group consistent, (1) birds were sensitive to the relation between marker color and marker type and (2) presentation of the second marker did not initiate timing a new interval. Testing also revealed a robust choose-long effect at delays longer than the training delay and indifference between the comparisons on no-sample trials. Both of the latter findings differ from those typically obtained when filled intervals are employed. It was concluded that pigeons process filled and empty intervals differently.  相似文献   

Moral Responsibility for Harm Caused by Computer System Failures     

Douglas?BirschEmail author 《Ethics and Information Technology》2004,6(4):233-245

When software is written and then utilized in complex computer systems, problems often occur. Sometimes these problems cause a system to malfunction, and in some instances such malfunctions cause harm. Should any of the persons involved in creating the software be blamed and punished when a computer system failure leads to persons being harmed? In order to decide whether such blame and punishment are appropriate, we need to first consider if the people are “morally responsible”. Should any of the people involved in creating the software be held morally responsible, as individuals, for the harm caused by a computer system failure?This article provides one view of moral responsibility and then discusses some barriers to holding people morally responsible. Next, it provides information about the Therac-25, a computer-controlled medical linear accelerator, and its computer systems failures that led to deaths and injuries. Finally it investigates whether two key people involved in the Therac-25 case could reasonably be considered to have some degree of moral responsibility for the deaths and injuries. The conclusions about whether or not these people were morally responsible necessarily rest upon a certain amount of speculation about what they knew and what they did. These limitations, however, should not cause us to conclude that discussions of moral responsibility are fruitless. In some cases, determinations of moral responsibility may be made and in others the investigation is still worthwhile, as the article demonstrates.  相似文献   

Evaluating a Multidimensional Reading Comprehension Program and Reconsidering the Lowly Reputation of Tests of Near‐Transfer          下载免费PDF全文

Douglas Fuchs  Emma Hendricks  Meagan E. Walsh  Lynn S. Fuchs  Jennifer K. Gilbert  Wen Zhang Tracy  Samuel Patton III  Nicole Davis‐Perkins  Wooliya Kim  Amy M. Elleman  Peng Peng 《Learning disabilities research & practice》2018,33(1):11-23

We conducted a 14‐week experimental study of 2 versions of a relatively comprehensive RC intervention that involved 50 classroom teachers, 15 tutors, and 116 children drawn in equal proportions from grades 3 and 5 in 13 schools in a large urban school district. Students were randomly assigned in equal numbers to the two tutoring conditions and a control group. Results indicated that students in the two tutored groups tended to perform comparably on all tests and to outperform controls (more so in grade 5 than grade 3) on near‐transfer but not far‐transfer measures of RC. This differential pattern of program effects for near‐ versus far‐transfer measures raises questions about how tests of near‐transfer and far‐transfer are conventionally understood.  相似文献   

Collaboration,Computer Mediation,and the Foreign Language Writer     

Douglas E. Roby 《Clearing house (Menasha, Wis.)》2013,86(6):308-311

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A Study of Certain Factors Influencing Academic Achievement with Special Reference to the Health Factor     

Lowell N. Douglas 《Journal of Experimental Education》2013,81(3):235-244

We studied “affective expectations” that may influence students’ willingness or unwillingness to study. Detailed expectations were elicited by having students imagine moods and appraisals at several stages of pursuing hypothetical classroom goals that differed in specificity and difficulty. They expected affective benefits much more than they expected affective penalties of goal setting; goal specificity, for example, reduced perceived coercion-distrust and improved mood before and after grade outcomes. Interactions suggested especially negative affect with easy/indefinite goals and stronger effects of goal characteristics in earlier phases of goal pursuit. Students also expected goal setting to increase importance of the goal and commitment to it. We concluded that students’ expectations of affective consequences should support rather than disrupt beneficial effects of goal setting on performance.  相似文献   

The Concept Map Is Not the Territory     

Douglas Allchin 《Studies in Science Education》2013,49(1):143-148

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ESSAY REVIEW     

Douglas Sloan 《Religious education (Chicago, Ill.)》2013,108(3):486-489

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The new business significance of branding     

Douglas Galbi 《媒体管理杂志》2013,15(4):192-198

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Some initial Probings into the application of the psychological theory of attention to tape‐slide sequences in the classroom     

Francis Douglas 《Irish Educational Studies》2013,32(1):156-177

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