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121.
《Journal of Multi-Criteria Decision Analysis》2017,24(3-4):121-132
Multi‐criteria decision analysis presumes trade‐off between different criteria. As a result, the optimal solution is not unique and can be represented by the Pareto frontier in the objective space. Each Pareto solution is a compromise between different objectives. Despite a limited number of Pareto optimal solutions, the decision‐maker eventually has to choose only one option. Such a choice has to be made with the use of additional preferences not included in the original formulation of the optimization problem. The paper represents a new approach to an automatic ranking that can help the decision‐maker. In contrast to the other methodologies, the proposed method is based on the minimization of trade‐off between different Pareto solutions. To be realized, the approach presumes the existence of a well‐distributed Pareto set representing the entire Pareto frontier. In the paper, such a set is generated with the use of the directed search domain algorithm. The method is applied to a number of test cases and compared against two existing alternative approaches. 相似文献
122.
为了考察中低功能自闭症儿童在动态条件下的多目标注意加工特点,研究采用多目标追踪实验范式,具体追踪任务采用多目标随机运动和碰撞反弹算法。实验设计为两因素混合设计,组间变量为年龄和性别匹配的中低功能自闭症和正常儿童组,组内变量为追踪目标数量(分别为1、2、3、4个目标),因变量为被试在多目标追踪任务中的追踪正确率和追踪容量。结果发现:(1)中低功能自闭症儿童在目标数量为1到目标数量为4时的正确率均明显低于正常儿童,且标准差变异较大,中低功能自闭症儿童的多目标的持续追踪能力和稳定性存在一定的缺陷;(2)当目标数量为1时,正常组儿童与中低功能自闭症儿童的追踪容量差异不显著;目标为2、3、4时,两组追踪容量差异均显著。不同目标数量情况下中低功能自闭症儿童平均的注意容量为0.83~1.24个(平均容量约为1个)明显低于正常儿童的0.95~3.72个(最大容量接近4个)。中低功能自闭症儿童在多目标追踪上表现为单焦点注意加工的特点,存在一定程度的注意转移缺陷。 相似文献
123.
有关多目标追踪的研究多采用目标闪烁数次或目标周围出现方框等视觉方式对目标进行标记。在已有研究基础上,通过2个实验比较了不同目标数量下视觉平行标记、视觉序列标记、听觉序列标记(视听跨通道标记)和视听双通道序列标记4种目标标记方式对多目标追踪表现的影响。研究结果表明在多目标追踪任务中,线索阶段目标的视觉标记比视听跨通道标记更有效,且不受目标的序列标记或平行标记的影响,而视觉和听觉编码结合(视听双通道标记)可以促进任务难度较高时的追踪表现。 相似文献
124.
Middle childhood is a crucial juncture in the lifespan where children work toward achieving a sense of competence foundational for future development. However, middle childhood has historically been underrepresented in the personality literature. The current study provides a comprehensive examination of personality in middle childhood using a large (N = 2510), longitudinal sample of 10- to 12-year-old twins. The structure, heritability, and correlates of personality in this period were investigated using personality ratings of parents, teachers, and children. Results showed that personality in middle childhood has a coherent structure, is heritable, and is relevant for developmentally salient outcomes such as externalizing behavior, substance use, and academic engagement. Results emphasize the importance of investigating personality in middle childhood across multiple informants. 相似文献
125.
This study investigates the temporal resolution capacities of the central-auditory system in a subject (NP) suffering from repetition conduction aphasia. More specifically, the patient was asked to detect brief gaps between two stretches of broadband noise (gap detection task) and to evaluate the duration of two biphasic (WN-3) continuous noise elements, starting with white noise (WN) followed by 3 kHz bandpass-filtered noise (duration discrimination task). During the gap detection task, the two portions of each stimulus were either identical (“intra-channel condition”) or differed (“inter-channel condition”) in the spectral characteristics of the leading and trailing acoustic segments. NP did not exhibit any deficits in the intra-channel condition of the gap detection task, indicating intact auditory temporal resolution across intervals of 1–3 ms. By contrast, the inter-channel condition yielded increased threshold values. Based upon the “multiple-looks” model of central-auditory processing, this profile points at a defective integration window operating across a few tens of milliseconds – a temporal range associated with critical features of the acoustic speech signal such as voice onset time and formant transitions. Additionally, NP was found impaired during a duration discrimination task addressing longer integration windows (ca. 150 ms). Concerning speech, this latter time domain approximately corresponds to the duration of stationary segmental units such as fricatives and long vowels. On the basis of our results we suggest, that the patient’s auditory timing deficits in non-speech tasks may account, at least partially, for his impairments in speech processing. 相似文献
126.
Christy H. Weer Jeffrey H. Greenhaus S. Nihal Colakoglu Sharon Foley 《Sex roles》2006,55(7-8):535-544
We examined the relationship between maternal employment and college students’ expected work–family conflict as well as the
relationship between expected conflict and the anticipated use of family-altering and career-altering strategies. Results
indicated a positive relationship between the extensiveness of maternal employment and expected work–family conflict only
for men. In addition, students who expected extensive work–family conflict anticipated delaying marriage, limiting the number
of children they will have, and, in the case of men, intending not to have children. There was no relationship between expected
work–family conflict and the anticipated use of career-altering strategies. Implications of the findings and directions for
future research are discussed. 相似文献
127.
128.
Nowadays, the internet plays a major role in online information retrieval. As, we are well aware the web provides information related all the fields like national, lifestyle, movies, shopping, spirituality, sports, entertainment and much more. One cannot assume that the web retrieved information is believable or trustworthy due to multiple answers to the same query. The paper aims to study many research articles which are related to truth information discovery. However, the paper found that there is no proper research to find trustworthiness of news content which is extracted from multiple information sources with minimum misclassification error and retrieval time. To alleviate these issues, the truth content discovery algorithm is proposed to produce trustworthy information with minimal time along with multiple domain news information. The system provides reliable information from a various source of news provider with minimum classification error. The proposed method ranked the news content index based on query matches from extracted information. It minimizes the query retrieval time and classification error. Based on the experimental evaluation, proposed TCD + J48 algorithm produced the best result compared to existing approaches. It minimizes reduces 7.54 ms the query retrieval time (QRT), 5% Error rate (ER) and 0.98 and Mean Normalized Absolute Distance (MNAD). 相似文献
129.
本研究探讨了身份交换对多身份追踪表现的影响。实验1和实验2分别考察了全部报告法和部分报告法下身份交换对多身份追踪表现的具体影响。结果均发现, 身份交换对身份−位置绑定干扰程度越大, 位置追踪和身份识别容量也均越低, 但位置容量始终高于身份容量, 并且这些特性在不同追踪负荷上相同。此外, 部分报告法比全部报告法更具有容量测量优势。实验3则进一步从听觉通道上控制了语音复述对当前任务的干扰, 所得结果仍支持实验1和实验2。这表明, 身份交换对多身份追踪的干扰机制是身份−位置绑定机制受到损害, 而非语音复述的作用。 相似文献
130.
Tariq Mustafa 《Zygon》2008,43(3):737-744
Science has been dazzlingly successful in explaining nature. Scientific advances also have led to certain undesirable, though unintended, side effects, one of which is alienation from the spiritual. Revelation comes from the Divine. But what is the status of authenticity of a particular piece claimed to be revelation? What is its historical validity and current state of preservation? This essay proposes to develop a list of rational criteria, in consultation with all stakeholders, for addressing the subject. The aim is to bring objectivity into this discourse by placing it more on the turf of reason rather than basing it on considerations of faith and prior allegiance. 相似文献