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  • 美国新型类 DARPA 项目管理创新机构的若干进展及启示

    Subjects: Management Science >> Science ology and Management submitted time 2023-07-09 Cooperative journals: 《中国科学院院刊》

    Abstract: In the context of major-power interactions, science and technology has increasingly become the main battleground and the inevitable place of competition among major powers. The new scientific and technological revolution will reshape the growth and decline of the economic competitiveness of countries and the global competition pattern. In order to compete for the increasingly competitive scientific and technological commanding heights, the United States clones the successful Defense Advanced Research Projects Agency (DARPA), which has been active and achieved many scientific and technological innovation achievements. Now, the United States plans to promote the establishment of agencies, such as the Advanced Research Projects Agency for Health (ARPA-H), the Advanced Research Projects Agency for Climate (ARPA-C), and the Advanced Research Projects Agency for Infrastructure (ARPA-I). The United States adopts task-oriented research and a highly flexible management model to accelerate the development of emerging and cutting-edge technologies to achieve major breakthroughs, and strives to grasp the initiative of global science and technology competition. We briefly describe the three DARPAlike agencies mentioned above, and take ARPA-H as an example. Then, we introduce its establishment background, mission, organizational framework, operation mechanism, and financing. We analyze the risks and challenges faced by ARPA-H as a new DARPA-like agency, and summarize the management enlightenment. Finally, we provide several policy suggestions for China's management innovation of disruptive technological projects.

  • 新颖语义联结在顿悟促进记忆效果中的作用

    Subjects: Psychology >> Social Psychology submitted time 2023-03-27 Cooperative journals: 《心理学报》

    Abstract: Previous empirical research has found the effect of insight on promoting memory retention during problem solving. Furthermore, neuroimaging studies have revealed that the amygdala, which is assumed to be associated with Aha experience, plays an important role in long-term memory of insightful events. While the emotional Aha experience is a key characteristic of insightful problem solving, some researchers emphasized that the core processes in creating insights involve breaking the mental set and forming novel and valuable associations. However, the cognitive and neural mechanisms underlying the promoting effect of insight on memory have not yet been fully explored. In this study, the paradigm of choice of answers to ChineseChengyu riddles was adopted to investigate how the process of forming novel associations impacts the effect of insight on promoting subsequent memory. Two experiments were conducted in this study. In Experiment 1, the paradigm of choice of answers to ChineseChengyu riddles consisted of two phases. In the learning phase, participants were asked to select the novel and suitable answer to theChengyu riddle from four options; after one week, in the testing phase they were asked to recall the answer that they chose in the learning phase. The novel association and normal association condition were distinguished according to the selections of participants. The paradigm used in Experiment 2 was similar to that of Experiment 1. Additionally, the functional Magnetic Resonance Imaging (fMRI) was used to record the neural activity in the learning phase. The results of Experiment 1 showed that the score of Aha experience in the learning phase and accuracy in the testing phase were significantly higher in the novel association condition compared to the normal association condition. In addition, Experiment 2 showed that the activity in the brain regions related to insight, including the hippocampus, amygdala, middle frontal gyrus, superior temporal gyrus and middle temporal gyrus, were significantly greater in the successful recall compared to the failed recall in novel association condition. Further analysis indicated that successful recall of novel association involved more activity in the right hippocampus compared to the recall of normal association. The current study verified the promoting effect of insight on memory, and indicated that forming novel semantic associations and related activity in the hippocampus may underlie this effect.

  • 创造性思维中语义搜索过程:基于答案累积时间函数和语义相似性的量化分析

    Subjects: Psychology >> Social Psychology submitted time 2023-03-27 Cooperative journals: 《心理学报》

    Abstract: The semantic search during creative thinking refers to the activation process of semantic information in long-term memory involved in creative activities. Influential theory has posited that the semantic activation process in free recall shows spreading activation within semantic networks and is characterized by negative acceleration and clustering. Unlike the free recall, it is necessary to suppress the dominant response and to activate novel and distant information during creative thinking. Therefore, one might expect different semantic search processes during creative thinking, but such a hypothesis has not yet been directly tested. To explore the semantic search process during creative thinking, the present study described the quantitative dynamic characteristics of answer generation in a divergent thinking test using a series of parameters, such as cumulative response distribution and semantic similarity. The experiment employed a within-subject design with the task type (novel V.S. normal) as the independent variable. The experiment included two versions of alternative uses task (AUT): novel and normal AUT. In the novel AUT, participants were asked to report novel and valid uses for the daily-life items presented on the screen as many as possible, while in the normal AUT they were only asked to think of valid uses for objects as many as possible. During the experiment, participants completed two normal AUTs, followed by two novel AUTs. Each AUT lasted for three minutes. The novelty of responses and semantic similarity of responses were scored by participants themselves. The time function of the cumulative number of responses was fitted by the hyperbolic function, and clustering analysis was conducted based on the semantic similarity of responses. The results showed that: (1) The cumulative response distribution in the novel AUT condition were negatively accelerating similar to semantic search during free recall, but the search speed in the novel AUT condition was slower than that of the normal AUT condition. (2) In the novel AUT condition, the semantic similarity between participants’ responses and the questions (i.e., the items) was low and significantly lower than that in the normal AUT condition. (3) The responses in the novel AUT condition showed a significantly lower degree of clustering than that in the normal AUT condition. In the novel AUT condition, the semantic similarity between the clusterable and non-clusterable answers and the questions were low and not significantly different. Furthermore, there was no significant difference between the clusterable and non-clusterable answers in terms of novelty. These findings indicated that the semantic search during creative thinking was partly in line with spreading activation theory of semantic search in free call. But the search speed was relatively slower. Furthermore, the novelty requirement prompted the participants to break up the semantic restriction of the item at the initial search and avoid nearby search. The participants tended to generate few idea in each semantic field. However, when it is far away from the item in the semantic field, individuals might generate clustering ideas.

  • 新颖语义联结在顿悟促进记忆效果中的作用

    Subjects: Psychology >> Cognitive Psychology submitted time 2021-04-21

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