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西樵纺织产业集群是广东内源型传统产业集群的代表。在调查研究的基础上,建立了西樵纺织产业集群的成长机制模型,从仿真结论总结出广东内源型传统产业集群的成长机制即劳动力的数量和质量在适应集群外部需求变化的基础上发生变化,并从而影响企业的数量和产能的过程和方式。 相似文献
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针对O2O电商平台利用补贴推广策略抢占市场的情形,通过建立多智能体仿真模型,研究不同供需情境下O2O补贴推广策略及不同参数变化对这种补贴策略的影响。结果表明:当区域市场供需状态由供不应求转变为供过于求时,重点补贴对象将由服务商转移到顾客,并且在供不应求时的最优补贴额度显著小于供过于求时的补贴额度;提高新平台用户的平均体验水平,可以扩大低广告效果下平台的市场占有率,削弱低广告效果的不良影响,同时可以降低供过于求市场中的每单最优补贴额;在新平台用户体验水平较高时,口碑传播对低广告效果时的平台补贴策略影响程度较大。 相似文献
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多Agent建模的虚拟企业知识转移演化博弈仿真分析 总被引:3,自引:2,他引:3
在有限理性的前提下,虚拟企业中各规模、实力不相同的成员企业在知识转移活动中进行重复非对称博弈,根据不同收益,选择有利策略逐渐模仿,而最终采取某个策略达到演化稳定均衡状态.依据演化博弈理论、虚拟企业知识转移基础理论,采用复杂适应系统多智能体(Multi-Agent)的整体建模仿真方法,运用Netlogo仿真平台创建虚拟企业知识转移非对称演化博弈仿真模型,在不同的收益参数下运行模型,对虚拟企业成员知识转移行为进行非对称合作竞争博弈演化仿真分析,得出各非对称成员企业在进行知识转移活动时应采用的策略,同时模型的建立和运行也为研究虚拟企业知识转移行为提供了一种有效方法. 相似文献
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当代社会中,各地时时刻刻都有因为群体过于密集而导致踩踏等人生伤害事件,因此研究突发危机事件下人员疏散很有必要。对于此类问题的研究,由于其特殊性多采用计算机仿真技术。本文在仔细研究各种模型后,建立了一个离散的微观仿真模型的数学分析框架,并以此建立了一个“多Agent+元胞自动机”的混合仿真模型。之后利用此模型仿真图书馆的应急疏散,通过该实例分析研究影响群体行为的主要因素,进而指导社会生活。 相似文献
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[目的/意义]探究虚拟学术社区内用户知识交流过程与关键影响因素,对推动科研合作和科学发展具有重要的理论与实践意义。[方法/过程]以后悔理论和演化博弈论为理论基础,将社区环境和个性特征相关参数作为研究指标,利用Anylogic开发多主体仿真系统,描述不同情景下虚拟学术社区知识交流的演化过程。[结果/结论]研究发现,个人性格特征比例、知识交流成本和利益损失能显著改善社区知识交流参与人数,知识收益对促进社区知识交流稳定性具有积极作用,并针对仿真结果提出建议。后续研究可增加模型变量,优化量化方式,进一步提高模型的解释力。 相似文献
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组织社会资本是能够带来内生优势的资源,其源于个体互动网络的特点决定了其多层次性。但着眼于不同层次和侧面的研究导致了构念架构的模糊。本文基于多层次理论的逻辑,将已有的概念、衍生与效能等相关研究纳入多层次视野下,说明了组织社会资本在单一层次和跨层次的应用,并建构了融合其跨层次前因与效果的跨层次理论架构,明确了组织社会资本的多层次本质及其所包含的微观与宏观的关联关系,并提出未来需要推进的问题。 相似文献
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近年来,社会调查方法在我国科技政策研究中得到广泛应用,但对该方法应用情况进行系统总结和评价的研究尚付阙如。本研究对进入新世纪以来国内相关期刊上公开发表的279篇使用社会调查方法的科技政策研究论文进行了系统回顾,发现社会调查方法在科技政策研究中得到日益广泛的应用,研究目的和统计方法的层次都有明显的提高,抽样方法、测量方法和资料收集方法的使用和呈现规范性水平也在不断提升。但仍存在对抽样代表性重视不足、调查方法呈现的规范性有待提高,以及对基本方法和概念理解不够准确等问题。文章最后还对未来如何提高调查研究方法水平提出了建议。 相似文献
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科学的智力组织和社会组织——惠特利的科学组织社会学述评 总被引:1,自引:0,他引:1
惠特利将组织理论引入科学社会学来研究科学的智力组织与社会组织,在诸多科学社会学理论流派中独树一帜。本文在较为详尽地介绍其理论脉络,比较两种科学社会学传统现状的基础上,分析了惠特利的理论对于综合科学社会学诸多流派所具有的较为独特的理论价值。 相似文献
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Rana Duncan-Daston Maude Hunter-Sloan Elise Fullmer 《Ethics and Information Technology》2013,15(1):35-43
The ethical implications of the explosion of social media outlets for social work education are explored in this paper. Given that social work education has a dual focus, both of educating students and of socializing practitioners into the profession, the issue of the blurring between what is social and what is professional gains particular salience for both educators and students. Recommendations for educators to ethically address the need to maintain a consistent professional presence online and to avoid potentially harmful dual relationships with students are presented. These recommendations include: abstain from using social media or use only a static professional profile; use only university protected sites to promote collaboration with students in the classroom including all students to avoid any appearance of impropriety; use social media with the utmost discretion mindful of all the risks by creating a very select circle of friends, separating one’s personal site from one’s professional site; develop policies which include not friending any individual student or any current student and inform students about the policies. 相似文献
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《Information processing & management》2020,57(3):102213
The ability of detecting infections at an early stage in clinical environments is an important clinical problem. When an infection is not diagnosed on time, it may not only affect the health of the infected patient, but also spread and infect other people.In this paper, we propose the development of a clinical decision support system (CDSS) for diagnosing infections using clinical signals from patients. This system is designed to be able to cope with small amounts of data (a single record per day and patient), making it convenient for environments under strict constraints (such as low resources or bad connectivity). Additionally, we have incorporated data from external sources, in order to enrich the quality of the models. In particular, we have considered social data arising from web searches, retrieved from Google Trends, as well as weather data.Clinical data was recorded between April 2018 and July 2019 in two nursing homes in Spain and one in Dominican Republic, where nurses had also tested patients for infections. Feature extraction was carried out by aggregating measurements from days before to the infection (lead) and after the infection was detected (lag), and these features were used to train supervised learning models. The best model attained using only clinical data attains an AUROC of 0.734. When data is enriched with external sources, this performance increases up to an AUROC of 0.798. In the case of prognosis (i.e., only measurements before the manual annotation of the infection are used) an AUROC of 0.719 is obtained using only clinical data, and up to 0.757 when combining additional sources of data.In conclusion, the CDSS provides a good recognition performance given the small amounts of data available. This performance can be increased by including social data, which are readily available, and can therefore be useful in scenarios where clinical data acquisition is expensive or unfeasible. 相似文献
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Mackenzie S 《Public understanding of science (Bristol, England)》2011,20(4):491-505
HIV/AIDS conspiracy theories constitute a loosely grouped set of meanings that share the notion of secret collusion among allied parties. This paper traces one woman's etiological narrative of HIV/AIDS. Such embodied experience and cultural understanding when placed against the backdrop of current thinking on the topic in the United States builds a new framework for understanding the emergence and circulation of HIV/AIDS conspiracy theories as "counter-narratives" employed by individuals and publics in the face of the AIDS pandemic. Such counter-narrative creates a rhetorical space for challenges to power through the articulation of oppositional ideas about dominant scientific knowledge. Without a critical exploration of HIV/AIDS conspiracy theories that examines their emergence and effects as a form of discourse circulating in the public domain, public health advocates will not be able to trace and respond to these narratives' impact on HIV prevention efforts or consider their relevance for other emerging infectious diseases. 相似文献
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从现代科学解释学和技术社会学的观点看,互联网与其说是一种具有高技术与“异托邦”特质的“另类空间”或媒介“物体系”,不如说是一种具有多方面工具理性气质的“社会工程体系”。互联网就是一种充满主体性、系统性、复杂性和互动性逻辑精神的社会工程。它是实际存在的,但因为处于虚拟环境中,所以对它的理解还须借助社会学的想象力。 相似文献