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Bellissima证明KAltn的正规扩张都是典范的,并且给出了一族连续统多的无有穷模型性的逻辑,本文构造出了KAltn的另一族连续统多的正规扩张,并且证明它们与Bellissima给出的颇为不同,它们要小得多,并且都具有有穷模型性。 相似文献
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Yoshitaka Ohkubo Akihiro Taniguchi Qiu Xu Minoru Tanigaki Koichi Sato 《Philosophical Magazine Letters》2013,93(8):470-477
Room-temperature time-differential perturbed-angular-correlation (TDPAC) spectra of 140Ce arising through 140Ba-140La from 140Cs in He-doped Fe, unannealed and annealed in vacuum at various temperatures, were obtained in order to examine whether Ce (or rather, La and Ba) and He form complexes having a definite geometrical structure in Fe, as suggested by first-principles density-functional theory calculations. No clear signal of such complexes was observed in the TDPAC spectra. However, the TDPAC spectra indicate that Ce and He form complexes having a variety of geometrical structures. Comparison with reported TDPAC results on 111Cd arising from 111In in He-doped stainless steel shows that the parent atoms (La and Ba) of 140Ce trap He atoms more efficiently than In atoms do, indicating stronger bonding of He to the former atoms, while different from the present case, 111Cd (In)–He complexes form a unique geometrical structure. 相似文献
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In responding to rating scale items, respondents may hold different perspectives on the given categories. The random-effect rating scale model (RERSM), developed to account for variations in the category thresholds across respondents, is unidimensional and unilevel. It becomes statistically inefficient when multiple unidimensional tests have to be analyzed and inapplicable when data have a multilevel structure (e.g., respondents nested within organizations, students nested within schools). To resolve these problems, this study develops a multidimensional and multilevel version of the RERSM. The parameters can be estimated with existing computer software. Thus, there is no need to develop estimation procedures or corresponding computer programs. Simulation studies were conducted to evaluate the parameter recovery of the multidimensional RERSM, the multilevel RERSM, and the multidimensional and multilevel RERSM using WinBUGS. The results showed that the parameter recovery was generally satisfactory. An empirical example of the application of the multidimensional and multilevel RERSM to 2006 Program for International Student Assessment inventories about attitudes toward learning sciences is provided. 相似文献
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Xuelan Qiu Jimmy de la Torre 《The British journal of mathematical and statistical psychology》2023,76(3):491-512
The use of multidimensional forced-choice (MFC) items to assess non-cognitive traits such as personality, interests and values in psychological tests has a long history, because MFC items show strengths in preventing response bias. Recently, there has been a surge of interest in developing item response theory (IRT) models for MFC items. However, nearly all of the existing IRT models have been developed for MFC items with binary scores. Real tests use MFC items with more than two categories; such items are more informative than their binary counterparts. This study developed a new IRT model for polytomous MFC items based on the cognitive model of choice, which describes the cognitive processes underlying humans' preferential choice behaviours. The new model is unique in its ability to account for the ipsative nature of polytomous MFC items, to assess individual psychological differentiation in interests, values and emotions, and to compare the differentiation levels of latent traits between individuals. Simulation studies were conducted to examine the parameter recovery of the new model with existing computer programs. The results showed that both statement parameters and person parameters were well recovered when the sample size was sufficient. The more complete the linking of the statements was, the more accurate the parameter estimation was. This paper provides an empirical example of a career interest test using four-category MFC items. Although some aspects of the model (e.g., the nature of the person parameters) require additional validation, our approach appears promising. 相似文献
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Di Liu Mengcheng Ji Kaixiang Zhuang Qunlin Chen Baoguo Shi Jiang Qiu 《International journal of psychology》2023,58(1):69-77
Positive risk-taking is a crucial element of individual creativity and social development. However, little is known regarding the relation between individual neural differences and positive risk-taking. In addition, critical thinking (CT) and gender have been proven to be two important individual-specific factors associated with risk-taking behaviour, and different levels of CT and gender may have diverse effects on the relationship between brain structure and positive risk-taking. The present study examined the relationship between positive risk-taking and regional grey matter volume (rGMV) in 292 healthy participants. The results showed that positive risk-taking was significantly positively associated with the rGMV of the posterior cingulate cortex (PCC). In addition, this study investigated individual differences in critical thinking and found that it moderated the relationship between rGMV and positive risk-taking. Individuals with lower CT had a stronger association between rGMV and positive risk-taking. Further analysis showed that for males, a greater rGMV was significantly linked to higher positive risk-taking tendency. These findings suggest that PCC evaluates risk and serves as a behavioural adaptation hub for positive risk-taking. This study thereby contributes to the literature on individual differences in brain structure and risk-taking by elucidating the moderating effects of CT and gender in healthy adults. 相似文献
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Ren-Zong Qiu 《Kennedy Institute of Ethics journal》1991,1(1):16-27
The bioethical dilemmas receiving the most attention in China now relate to the two ends of life: birth and death. On one end are issues relating to reproductive technology, especially birth control and family planning; at the other end is euthanasia...More research and discussion among people from various fields is needed. Progress will be made one step at a time, and I recommend that we proceed now to win acceptance of brain death criteria; to make clear the distinctions between passive and active euthanasia,...to encourage the use of living wills; and to protect the interests of newborns who are not terminally ill, including those with mild defects. In the changing context of modernization, in which different and even incompatible value systems must coexist, it is best for us to approach the ethical dilemmas facing us with mutual respect and understanding. 相似文献
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条件推理的类比转换运用 总被引:1,自引:0,他引:1
该文通过2个实验研究旨在探究将演绎推理和类比推理结合在一起的四卡条件推理的类比转换运用的特点。结果表明:1)假设检验的条件推理过程在特定的实验条件下,表现出推理过程转换的心理加工特点;2)改善问题的陈述形式,使之和样例问题一样,能够降低推理过程转换的难度,促进推理过程转换的成绩;3)2个样例归纳的图式促进同形问题的解答,却对推理转换过程有抑制作用。 相似文献
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高职学生心理健康问题研究 总被引:19,自引:0,他引:19
高职学生是中国高校学生中的一个特殊群体。职业化教育模式影响下的高职学生.面对的是学历教育与职业教育并举的教育,职业心理和学习心理折射出高职学生在职业定势、学习动机、成才抱负、人际关系、青春期回应等方面的诸多心理健康问题。本研究从问卷探源到本质归因,提出高职学生心理健康教育问题的具体应对策略和思考。 相似文献
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