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A Study on the Supply Conditions of College and University Graduates in Liaoning Province
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作者 wenli bao Fei Xu 《Journal of Contemporary Educational Research》 2022年第5期48-53,共6页
This study investigates the supply conditions of college and university graduates in terms of total quantity and incremental quantity,analyzes the influencing factors of college and university enrollments,including re... This study investigates the supply conditions of college and university graduates in terms of total quantity and incremental quantity,analyzes the influencing factors of college and university enrollments,including regional population and GDP level,and finally,probes into the specialty construction situation of colleges and xiniversities in Liaoning Province,in order to further investigate the construction situation in each discipline,and thereby making an in-depth analysis of its development. 展开更多
关键词 Liaoning Province College and university graduates Supply conditions
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“矫枉过正”效应的理论解释及其神经机制
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作者 包文莉 辛媛媛 《心理学进展》 2014年第7期1006-1011,共6页
在测验中将错误题目的正确答案反馈给个体后,在随后的测验中,信心水平高的错误题目比信心水平低的错误题目更容易被改正,这一现象被称作“矫枉过正”。目前关于“矫枉过正”现象有三种理论解释。注意力理论认为相对于信心水平低时出错,... 在测验中将错误题目的正确答案反馈给个体后,在随后的测验中,信心水平高的错误题目比信心水平低的错误题目更容易被改正,这一现象被称作“矫枉过正”。目前关于“矫枉过正”现象有三种理论解释。注意力理论认为相对于信心水平低时出错,人们发现自身信心水平高的题目竟然会犯错误,因此会唤起注意力,并且花费较多精力去学习正确答案;熟悉性理论指出,那些信心高时所犯错误的一般知识可能是人们一开始就知道的,学习一种已经存在于记忆中的信息远远比学习一个新颖的知识简单;最近学习区理论从学习的角度进行阐述“矫枉过正”可能的心理机制,最近学习区中的知识材料学起来不太困难,但是在没有进行再次学习(如反馈)的情况下也不会被直接提取出来,因此反馈本身很关键。“矫枉过正”的神经机制研究发现在错误矫正时,除了代表元记忆不匹配的共同脑区发生活动,背外侧前额叶只有在高信心回答错误的情况下发生活动,在低信心回答正确时没有出现活动,右背外侧前额叶也是如此,因此可以认为背外侧前额叶参与了错误矫正过程,是错误记忆的抑制机制。未来可以考虑在一些特殊人群等领域展开大量研究,如记忆障碍者、学习障碍者是否存在“矫枉过正”现象,这对于了解人类高级认知过程极具价值。 展开更多
关键词 矫枉过正 理论解释 神经机制
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Four-wave mixing in graphdiyne-microfiber based on synchronized dual-wavelength pulses
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作者 Xinxin Jin wenli bao +2 位作者 Han Zhang Zheng Zheng Meng Zhang 《Photonics Research》 SCIE EI CAS CSCD 2022年第2期503-508,共6页
We demonstrate four-wave mixing(FWM) in the graphdiyne(GDY) microfiber based on the synchronized dualwavelength pump pulses that are transformed from a mode-locked fiber laser. Benefiting from the large nonlinear refr... We demonstrate four-wave mixing(FWM) in the graphdiyne(GDY) microfiber based on the synchronized dualwavelength pump pulses that are transformed from a mode-locked fiber laser. Benefiting from the large nonlinear refractive index of GDY and the synchronized pump pulses, a maximum conversion efficiency of -39.05 dB can be achieved in GDY with only an average pump power of 6.9 mW, greatly alleviating the possible damage compared to previous investigations employing the continuous-wave pump. In addition, our proposal can be applied to measure the effective nonlinear coefficient γ of the GDY-microfiber, which could be extended as a practical measurement tool for γ of nanomaterials-based devices. 展开更多
关键词 PUMP MIXING wave
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