Determinants of non-profit sports clubs’ perceived competition from commercial sports providers     

《Sport Management Review》2020,23(4):736-749

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Production of green surfactants: Market prospects     

《Electronic Journal of Biotechnology》2021

Science has greatly contributed to the advancement of technology and to the innovation of production processes and their applications. Cleaning products have become indispensable in today’s world, as personal and environmental hygiene is important to all societies worldwide. Such products are used in the home, in most work environments and in the industrial sectors. Most of the detergents on the market are synthesised from petrochemical products. However, the interest in reducing the use of products harmful to human health and the environment has led to the search for detergents formulated with natural, biodegradable surfactant components of biological (plant or microbiological) origin or chemically synthesised from natural raw materials usually referred to as green surfactants. This review addresses the different types, properties, and uses of surfactants, with a focus on green surfactants, and describes the current scenario as well as the projections for the future market economy related to the production of the different types of green surfactants marketed in the world.How to cite: Farias CBB, Almeida FCG, Silva IA, et al. Production of green surfactants: Market prospects. Electron J Biotechnol 2021;51. https://doi.org/10.1016/j.ejbt.2021.02.002  相似文献   

Paying the price: consequences for children’s education in prison in a market society     

《International Journal of Educational Development》2020

This article explores consequences for children’s education in custodial institutions in a contemporary market society, England and Wales. It finds that policy decision-making designed to ‘transform’ prison education for children is primarily influenced by a desire to limit the cost to the public purse of custodial placements. This paper argues that market values influence decision-making in the youth custody sector and shape the nature and quality of provision that children are permitted to access. The consequences associated with this include further fragmentation of prison provision for children, an imbalance in the types of custodial place made available, (with children disproportionately contained in the cheapest type of provision), geographical discrepancies and persistent high re-offending rates. The concern with the costs of custody is particularly prominent in a society subject to ‘austerity’ measures across a wide range of public services, particularly in the criminal justice sector (Ismail, 2020). However, it is inconsistent with contemporary knowledge and understanding of children in custody, their needs and their vulnerabilities. The transformation supposedly sought is unlikely to materialize while annual cost-per-child place is a dominant driving force. Instead, we need to start with an understanding of what individual support children in prison need in order to be ‘education ready’.  相似文献   

‘This could be our reality in the next five to ten years’: a blogpost platform as an expectation generation device on the future of insurance markets     

Gert Meyers  Ine Van Hoyweghen 《Journal of Cultural Economy》2018,11(2):125-140

William James (1919) characterises hypotheses as either live or dead. A hypothesis is live when it is taken into account as a ‘real possibility’. We follow James’ suggestion to not attribute intrinsic properties to hypotheses, but rather investigate how they came into being and look at the effects they generate. Expectations of digital technologies are a topic of vivid debate in the insurance industry. Before these expectations can become ‘live’, they have, in the first place, to be generated by market devices. We investigate how the reinsurance blogpost platform Open Minds functions as an ‘expectation generation device’ on the future of insurance markets. Combining Beckert’s work on the role of fictional expectations with the pragmatist turn in sociology of markets, we propose to study ‘expectation generation devices’, provoking expectations on economic markets. In our empirical analysis, we demonstrate the explicit fictional character of the Open Minds contributions, and analyse how a contained space of openness is generated to provoke expectations. We demonstrate how Open Minds can become live through circulation to other expectation generation sites in the insurance industry and beyond. We conclude by reflecting on the importance of expectation generation devices as a particular type of market devices.  相似文献   

职业足球改革困境：一种非均衡国家治理模式的反思     

周嘉豪 《河北体育学院学报》2020,34(2):1-5

运用文献资料法和逻辑分析法,从非均衡国家治理角度对我国职业足球改革面临的困境进行研究。通过梳理相关文献提出,当前国家治理模式具有非均衡性,存在各主体参与失范、治理权责分配失衡的问题,市场、社会、个人主体话语权较弱、参与性不足,形成了较强的政府依赖路径。对职业足球改革各主体之间的关系进行阐述,认为政府和足协是改革话语权的掌握者和资源的分配者,其他主体参与改革作用较小。指出,尚未明确职业足球的发展动机、足协组织能力与管理效能不足、各主体缺乏有效联系与合作是非均衡国家治理模式的具体表现;政府的非市场手段治理、市场失灵与第三部门失灵、个体意识与自我治理不足是其深层次原因。在此基础上提出相应的发展对策。  相似文献   

经济新常态背景下对安徽省体育消费市场的分析和建议——基于对安徽省大学生体育消费现状的调查分析     

朱成  杜伦乐 《当代体育科技》2020,(8):238-241

在校大学生作为消费日趋独立,个体意志日益成熟,对新事物新形态接受能力较强的体育消费群体,是现在和未来支撑体育消费市场的重要群体,具有一定的代表性和前瞻性。通过对安徽省全日制本科院校在校大学生体育消费水平、体育消费支出比重、体育消费方式及体育消费满意度等现状进行调查分析,有助于对经济新常态背景下安徽省体育消费市场现状进行分析并提供有效的发展建议。本文通过问卷调查,对数据整理分析,结合安徽省体育消费市场现状,提出应提高消费水平、优化消费结构、加快互联网经济建设等建议。  相似文献   

基于无人机激光点云的树障检测与砍伐树木数量估算     

张苏  齐立忠  韩文军  朱笑笑  习晓环  王成  王濮  聂胜 《中国科学院大学学报》2020,37(6):760-766

电力走廊的树木生长会对输电线路的安全运营造成巨大影响，精确检测出影响线路安全的树木并将其砍伐至关重要。因此，提出一种基于无人机激光点云的树障检测与砍伐树木数量估算方法。首先，对激光点云进行快速自动化处理，先后精确提取地面点、电力线点与植被点；其次，基于电力线点进行分段，并分析电力线与植被点的安全距离，进而确定树障区域的位置和范围；最后，对树障区域植被点云进行单木分割，并统计单木数量，最终实现砍伐树木数量的精准估算。研究结果表明，无人机激光点云可以实现输电通道树障的有效检测与砍伐树木数量的精确估算，总体树木砍伐数量估算精度可达92.3%，可为输电线路安全运营提供遥感技术支撑，也可为电网运维单位制订树木砍伐计划提供可靠依据。  相似文献   

一种基于图割的机载LiDAR单木识别方法     

王濮  邢艳秋  王成  习晓环 《中国科学院大学学报》2019,36(3):385-391

针对现有机载激光雷达（light detection and ranging，lidar）数据单木分割算法在密集林区中探测精度较低的问题，结合林木冠层空间结构分层的特点，提出一种从机载点云数据直接分离单木的方法。首先，对原始点云数据进行去噪、滤波、高程归一化；然后基于冠层高度模型（canopy height model，chm）计算局部最大值以确定冠层表面的明显树顶，以此作为单木位置的先验知识，继而采用归一化割（normalized cut，Ncut）方法实现冠层的初始分割；最后，以全局最大值代替局部最大值，并将冠层形状、冠层最小点数作为约束条件，再次利用Ncut方法完成对漏检单木的探测，进而实现单木的精确探测。实验结果表明，针对密集林区的单木分割，本方法有效地减少了漏识单木，整体精度达90%以上，将有助于单木三维结构定量描述及参数反演。  相似文献   

欧洲足球五大联赛市场治理的经验及对中国的借鉴     

布特  刘雪薇 《南京体育学院学报(社会科学版)》2020,34(6)

本文应用文献资料法、数据分析法，以欧洲足球五大联赛2017/18赛季经营状况为载体，从职业足球俱乐部内部经营和市场环境两方面讨论和研究治理做法和经验，从而指出五大联赛市场平稳有序和职业足球俱乐部可持续发展的经验。从我国足球国情出发，结合五大联赛市场治理经验，探索中超联赛市场治理创新，研究认为：创新治理主体结构，形成“三位一体”的治理格局，明确中超治理主体责任；创新职业足球市场治理体制，提高中超市场自治能力和水平；创新职业俱乐部内部治理体系，创造职业足球俱乐部健康可持续发展生态；创新治理价值体系，打造足球产业经营全产业链，创造中超市场盈利模式。  相似文献   

扬州市邗江区羽毛球培训市场发展现状与对策研究     

刘大正 《体育科技文献通报》2020,(2):93-95,108

本文采用文献资料法、问卷调查法、数理统计法,对扬州市邗江区羽毛球培训市场的现状进行调查研究,探讨羽毛球培训市场健康可持续发展对策。以期为促进扬州市羽毛球运动和区域经济的发展提供参考。研究结果表明:扬州市邗江区羽毛球场馆以中小型为主,场地材质多为塑胶场地,收费标准较为合理,培训对象多为青少年,教练员男女比例失调,以中青年为主,学历层次多为本科且多以兼职为主;为了更好的促进扬州市邗江区羽毛球市场的发展,应加强场馆硬件设施建设,提升场馆服务质量;注重高水平人才队伍建设;制定价格标准,保证市场健康发展;制定价格标准,保证市场健康发展。  相似文献