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61.
Christopher M. Lott 《Empirical Software Engineering》1997,2(3):269-289
Process-centered software engineering environments are expected to improve an individual's comprehension of work activities, as well as improve communication and reduce conflicts among teams of software developers. We chose to investigate individual responses when using such an environment before looking for a group response. A controlled experiment compared off-line and on-line implementations of measurement-based process guidance to test three hypotheses: first, individuals accomplish their work more efficiently when using on-line process guidance as compared to off-line guidance; second, individuals are willing to use an on-line system for guidance; and third, individuals adjust their behavior based on quantitative quality models. The subjects worked alone on two testing exercises. Subjects used either an off-line or an on-line guidance technique during the first exercise, and the other technique during the second exercise. The results did not confirm the hypotheses. On average, subjects worked more efficiently when using off-line guidance, preferred off-line guidance, and ignored quantitative quality models. Post hoc analysis identified a strong correlation between subject experience level and preference for the type of guidance, a result that deserves further investigation. 相似文献
62.
有教师的线性基本函数前向三层神经网络结构研究 总被引:148,自引:0,他引:148
优化选择隐节点数是人们在应用基于误差反传算法的有教师的线性基本函数前向三层神经网络过程中首先遇到的一个十分重要而又困难的问题。本文从国内外大量应用裕列中陪结归纳出了一个初定这种网络隐节点数的经验公式,提出了一种判断所选隐节点数是否多余的具体方法,并从理论上做了详细的推导。 相似文献
63.
64.
The purpose of the current study was to examine in detail the association between witnessing domestic violence (DV) and long-term psychological adjustment. Important limitations of past research were addressed, including controlling for several associated risk factors. Special attention was paid to whether the perpetrator of the violence was the maternal or paternal figure, as well as to whether the witness to the violence was male or female. Participants completed measures examining DV witnessed, direct child abuse experienced, and current psychopathology. Following screening for physical and sexual abuse, a sample of 351 individuals was selected. Four groups of participants were compared. Results indicated that individuals who had witnessed either physical DV or major psychological DV had higher levels of psychopathology than individuals who reported witnessing minor psychological DV or controls. After controlling for direct psychological abuse experienced, witnessing DV remained a significant predictor of psychopathology for males but not for females. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
65.
Interviews with African American and White American elders capture the immediate power of the Brown v. Board of Education (1954) decision and the biography of its impact over time. This article reviews the lived experience of the decision and theorizes 3 threats to sustainability that ruthlessly undermined the decision over time: (a) the unacknowledged and enormous sacrifice endured by the African American community in the name of desegregation; b) the violent and relentless resistance to the decision by government officials, educators, and many White community members; and (c) the dramatic shrinkage of the vision of Brown from the dismantling of White supremacy to a technical matter of busing. Implications are drawn for the study of desegregation and for the study of sustainability of social justice more broadly. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
66.
Psychologists' work was cited in the Supreme Court case of Brown v. Board of Education (1954). One criticism of the citation was that psychology could be used to overturn the Brown decision and return the country to segregation. A historical examination of such an attempt to overturn Brown in the early 1960s on the basis of new psychological knowledge shows that psychology was not persuasive in the face of the civil rights movement. The failure of segregationists to overturn Brown with psychological experts underscores how psychology is ineluctably bound to the larger society. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
67.
Important asymmetries between self-perception and social perception arise from the simple fact that other people's actions, judgments, and priorities sometimes differ from one's own. This leads people not only to make more dispositional inferences about others than about themselves (E. E. Jones & R. E. Nisbett, 1972) but also to see others as more susceptible to a host of cognitive and motivational biases. Although this blind spot regarding one's own biases may serve familiar self-enhancement motives, it is also a product of the phenomenological stance of naive realism. It is exacerbated, furthermore, by people's tendency to attach greater credence to their own introspections about potential influences on judgment and behavior than they attach to similar introspections by others. The authors review evidence, new and old, of this asymmetry and its underlying causes and discuss its relation to other psychological phenomena and to interpersonal and intergroup conflict. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
68.
利用法国布雷斯特(Brest)港BRST测站和英国塞文大桥监测系统GNSS双频观测数据,分别在静态和高动态环境下进行GPS-IR水位反演,探究传统GNSS监测系统进行水位反演的可行性与精度.结果表明:L1波段反演精度高于L2波段;在静态场景下,GPS-IR水位反演结果与验潮站数据相关系数大于0.98,在高动态场景下,桥梁GPS-IR水位反演精度稍低.利用经验模态分解(EMD)方法对算法进行改进,提高了在桥梁复杂环境下GPS-IR水位反演结果的精度,均方根误差(RMSE)相比经典方法降低约50%.本文方法提高了GPS-IR技术在不同水域环境下的适用性,在水位监测中具有很好的应用前景. 相似文献
69.
Criticizes F. McKinney's (see record 1977-28569-001) account of the introduction of Gestalt psychology into US psychology for neglecting to mention the contributions of R. M. Ogden. Ogden provided early translations of Koffka's work and wrote the first book by a US psychologist from the viewpoint of Gestalt theory and principles. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
70.
一种新的基于EMD模态相关的信号去噪方法 总被引:1,自引:0,他引:1
陈凤林 《西华大学学报(自然科学版)》2009,28(6):20-24
基于模态相关的准则,提出了一种新的信号去噪方法。首先对原信号进行经验模态分解(EMD),其次根据各阶固有模态与原信号的相关系数曲线中第一个极小值点的位置作为标准定出噪声主导性模态与信号主导性模态的分界点,最后将固有模态函数(IMF)中信号起主导作用的模态成分进行重构来实现去噪。将该方法应用于仿真信号与实际光辐射强度信号的去噪,结果表明该方法在有效去噪的同时能较好地保持原信号的细节信息,具有较好的推广性。 相似文献