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ISCTE-IUL 2019 International Conference: Social Solidarity Economy and the Commons - Contributions to the Deepening of Democracy ISCTE-IUL 2019国际会议:社会团结、经济和公地——对深化民主的贡献
Pub Date : 2020-02-28 DOI: 10.5947/jeod.2019.009
A. Piccoli, Jacopo Sforzi
The international conference i?½Social Solidarity Economy and the Commons - Contributions to the Deepening of Democracyi?½ was held on November 6th-8th 2019 at the Instituto Universiti?½rio de Lisboa (ISCTE-IUL) in Lisbon (Portugal). Its aim was to promote dialogue and exchanges of knowledge and experience among academics, practitioners and civil society activists about new governance models of the commons and the necessity to find alternative or complementary socio-economic development paradigms based on new spaces for collective action to re-establish social ties and build new life and work opportunities. This short report, included in the JEOD i?½Conference letteri?½ section, retraces and briefly illustrates the main findings emerged during the conference.
国际会议是?社会团结、经济和公地——对深化民主的贡献?½于2019年11月6日至8日在Instituto Universiti?里斯本(葡萄牙)的里约里斯本(ISCTE-IUL)。其目的是促进学者、实践者和民间社会活动家之间关于公地新治理模式的对话和知识和经验交流,以及在集体行动的新空间基础上寻找替代性或互补性社会经济发展范式的必要性,以重建社会关系和建立新的生活和工作机会。这个简短的报告,包括在JEOD i?莱特瑞½会议吗?半部分,回顾并简要说明了会议期间出现的主要发现。
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引用次数: 0
Click & Transit Application – Application for Commuter Based on Transit Mobile Payments to Improve Transit System and Encourage Public Transit Unit Usage 点击&公交应用-基于公交移动支付的通勤者应用,以改善公交系统,鼓励公共交通单位的使用
Pub Date : 2018-05-27 DOI: 10.2139/ssrn.3194584
Fakhrinanisa Islah Birru Akhsana
Commuters with high mobility create a complex transit system that implies the various usage of TU (transit unit). Boarding into Bus Rapid Transit or alighting from High Speed Train becomes daily routine to finally arrive in working place or school. Old-fashioned fare collection of transportation system is by paying the fare directly and buying the paper-based tickets. The old way seems to be not efficient for transit agencies. As the technology improves, the fare collection can be occurred by electronic ticket, moreover by mobile payments. By implementing transit mobile payments, transit unit payment will be easily accessed from every commuter smartphone. Providing the phone with Click & Transit Application is one way to help the transit agencies analyze transit system and congestion. The data collection from commuters’ smartphone, by clicking in the gate in and gate out, needed for improving the transit system related by passenger O-D (Origin Destination) and transportation mode usage. From the data also can be known how many times that the commuters use public transit unit, so that the transit agencies know their loyalty. Every click for paying the public transit fare will result into points. The points which are collected by the application system can be exchange with some rewards such as food voucher, fashion voucher, or free riding TU. A cooperation between transit agencies and merchants who provide the reward should be more interesting. To conclude, Click & Transit Application gives advantages for both transit agencies and commuters. The transit agencies are helped for the transit system analysis by the data collection. The public transit passenger will be increased because of the reward system, so that the traffic burden may be lighter. Moreover, the commuter will be more loyal to use public transit unit as a choice for their everyday mobility.
高流动性的通勤者创造了一个复杂的交通系统,这意味着TU(交通单位)的各种使用。搭乘快速公交或从高铁下车,最终到达工作地点或学校,成为了每天的例行公事。传统的交通系统的收费方式是直接支付车费并购买纸质车票。对于运输机构来说,旧的方式似乎效率不高。随着技术的进步,可以通过电子票和移动支付来收取车费。通过实施交通移动支付,每个通勤者的智能手机都可以轻松访问交通单位支付。为手机提供点击和交通应用程序是帮助交通机构分析交通系统和拥堵的一种方法。从乘客的智能手机上收集数据,通过点击进站和出站,以改善与乘客O-D(出发地)和交通方式使用相关的交通系统。从数据中还可以知道通勤者使用公共交通单位的次数,从而使公交机构了解他们的忠诚度。每次点击支付公共交通费用都会得到积分。应用系统收集的积分可以兑换食品券、时尚券、免费乘车TU等奖励,公交机构与提供奖励的商家合作应该会更有趣。综上所述,Click & Transit Application为公交机构和通勤者提供了优势。通过数据收集,可以帮助运输机构对运输系统进行分析。由于奖励制度,公共交通乘客将会增加,因此交通负担可能会减轻。此外,通勤者将更加忠诚地使用公共交通单元作为他们日常出行的选择。
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引用次数: 0
A Threshold Model for Local Volatility: Evidence of Leverage and Mean Reversion Effects on Historical Data 局部波动的阈值模型:杠杆和均值回归对历史数据影响的证据
Pub Date : 2017-12-20 DOI: 10.2139/ssrn.3101666
A. Lejay, P. Pigato
In financial markets, low prices are generally associated with high volatilities and vice-versa, this well-known stylized fact is usually referred to as the leverage effect. We propose a local volatility model, given by a stochastic differential equation with piecewise constant coefficients, which accounts for leverage and mean-reversion effects in the dynamics of the prices. This model exhibits a regime switch in the dynamics according to a certain threshold. It can be seen as a continuous-time version of the self-exciting threshold autoregressive (SETAR) model. We propose an estimation procedure for the volatility and drift coefficients as well as for the threshold level. Parameters estimated on the daily prices of 351 stocks of NYSE and S&P 500, on different time windows, show consistent empirical evidence for leverage effects. Mean-reversion effects are also detected, most markedly in crisis periods.
在金融市场中,低价格通常与高波动性相关联,反之亦然,这个众所周知的事实通常被称为杠杆效应。我们提出了一个局部波动率模型,由一个具有分段常系数的随机微分方程给出,该模型考虑了价格动态中的杠杆效应和均值回归效应。该模型在动力学中表现出按一定阈值的状态切换。它可以看作是自激阈值自回归(SETAR)模型的连续时间版本。我们提出了一种对波动系数和漂移系数以及阈值水平的估计方法。对纽约证券交易所和标准普尔500指数的351只股票在不同时间窗口的日价格估计的参数显示出一致的杠杆效应的经验证据。均值回归效应也被发现,在危机时期最为明显。
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引用次数: 15
Optimizing Local Content Requirements Under Technology Gaps 技术差距下的本地内容需求优化
Pub Date : 2017-11-10 DOI: 10.2139/ssrn.2750316
Shiliang Cui, Lauren Xiaoyuan Lu
We study the optimal Local Content Requirements (LCR) and innovation policies of a developing economy in which a foreign Original Equipment Manufacturer (OEM) produces and sells a final product. The OEM assembles the product from multiple components manufactured by external suppliers. Domestic component suppliers incur higher costs than overseas suppliers due to a technology gap in manufacturing. To protect the domestic supply base and to maximize GDP, the government of the developing economy imposes LCR, which mandates a minimum amount of local sourcing as a percentage of the OEM’s total procurement value. In the base model, the final product consists of two components, which differ both in the overseas sourcing cost and in the technology gap between domestic and overseas supplies. We derive the optimal LCR policy and prove that it is monotone increasing in the demand of the final product. We also characterize the government’s innovation policy on domestic suppliers. Specifically, in order to grow the GDP, which component’s domestic supply base should the government invest in to reduce its technology gap relative to overseas suppliers? Our analysis suggests that when the demand of the final product is low, the government should invest in the component with smaller technology gap. However, when the demand is sufficiently high, investing in the component with higher overseas sourcing cost (than the other component) generates a larger marginal gain in the GDP. As the domestic component supply base becomes more cost efficient, surprisingly, the OEM’s profit could decrease. This outcome is caused by the government’s action to tighten the LCR policy in response to improved cost efficiency of the domestic supply base. Finally, we extend the base model to analyze a product with N components and demonstrate that the key insights remain to hold.
本文研究了一个发展中经济体中由外国原始设备制造商(OEM)生产和销售最终产品的最优本地含量要求(LCR)和创新政策。OEM将外部供应商生产的多个组件组装成产品。由于制造技术上的差距,国内零部件供应商的成本高于海外供应商。为了保护国内供应基础并最大化GDP,发展中经济体的政府强制实施LCR,即要求OEM的本地采购占总采购价值的最低比例。在基本模型中,最终产品由两个部分组成,这两个部分在海外采购成本和国内与海外供应的技术差距上都有所不同。导出了最优LCR策略,并证明了该策略是单调递增的。我们还描述了政府对国内供应商的创新政策。具体来说,为了增长GDP,政府应该投资哪一部分的国内供应基础,以缩小其相对于海外供应商的技术差距?我们的分析表明,当最终产品的需求较低时,政府应该投资于技术差距较小的部件。然而,当需求足够高时,投资海外采购成本较高的组件(比其他组件)会产生更大的GDP边际收益。随着国内零部件供应基地变得更具成本效益,令人惊讶的是,OEM的利润可能会下降。这一结果是由于政府采取行动收紧LCR政策,以应对国内供应基础成本效率的提高。最后,我们扩展了基本模型来分析具有N个组件的产品,并证明了关键的见解仍然成立。
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引用次数: 19
Pardis Technology Park and its Effects on Sustainability in the Development of Science and Technology Parks (STPs) in the Islamic Republic of Iran 伊朗伊斯兰共和国帕迪斯科技园及其对科技园发展可持续性的影响
Pub Date : 2017-09-02 DOI: 10.2139/ssrn.3031131
A. Mamhoori
Pardis Technology Park (PTP) is a place for companies with highly skilled, professionally advanced and comprehensive technologies that qualify support from the government. The proximity of these knowledge-based- companies concentrated in pockets of scientific parks creates convergence in technology and skills leading to the opening of new avenues of cooperation. Consequently, the interaction among these companies leads to advanced commercialization. Pardis Technology Park is Iran's Silicon Valley. It is an organization that aims to transfer experiences and expertise of top and successful entrepreneurs to the incoming generation of scientists and technocrats, thus creating successful business models. The goal of this paper is to introduce Pardis Technology Park throughout the Islamic Republic of Iran to provide business opportunities among companies via technological interactions among them.
帕迪斯科技园(PTP)是拥有高技能、专业先进和综合技术的公司获得政府支持的地方。这些以知识为基础的公司集中在科学园区的小块土地上,它们的邻近创造了技术和技能的融合,从而开辟了新的合作途径。因此,这些公司之间的互动导致了先进的商业化。帕迪斯科技园是伊朗的硅谷。它是一个旨在将顶级成功企业家的经验和专业知识传授给新一代科学家和技术官僚的组织,从而创造成功的商业模式。本文的目标是在整个伊朗伊斯兰共和国介绍Pardis科技园,通过技术互动为公司提供商业机会。
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引用次数: 0
Smart City: A Failed Approach to Urban Regeneration for Indian Cities 智慧城市:印度城市更新的失败之路
Pub Date : 2017-03-04 DOI: 10.2139/ssrn.2929205
P. Nair, Sandeep Sharma
City is not a new phenomenon. Civilizations like Mesopotamia, Egypt, and Indus valley had a rich culture of urban life. However, not more than ten per cent of population of these civilizations used to live in cities (Modelski, 1997). Cities were dependent of villages to meet their everyday needs. They were geographically small and less populated as compared to the Modern Cities. Urban life was not much different in the cities of these civilization than that of the cities of pre-industrialization. Industrialization first happened in 16th century in North-West Europe specifically in Britain and Denmark. Later on it spread to other part of Europe and America. By 20th century it spread its legs to the African and Asian continent in the form of colonization. New modes of social and economic life became evident in all part of the world and this marked the onset of new age called ‘modernization.’ Modernization redefined urban life and urbanization became a mandatory precondition to modernization. Urban-Rural relationship experienced a paradigm shift. New socio-politico environment put villages at back stage. Village resources were drained out to support urban life. A dependency of rural upon urban was created. As a result urbanization increased rapidly. At present there are such countries in the world where urbanization has reached to more than 90 per cent (Geoffrey, 2005). India has 31 percent of her population living in urban area with a growth rate of 2.3 per cent per year (Mani, 2016).
城市并不是一个新现象。美索不达米亚、埃及和印度河流域等文明都有丰富的城市生活文化。然而,这些文明中不超过10%的人口曾经居住在城市(Modelski, 1997)。城市依赖乡村来满足日常需要。与现代城市相比,它们在地理上较小,人口较少。这些文明城市的城市生活与工业化前的城市没有太大的不同。工业化最早发生在16世纪的西北欧,特别是英国和丹麦。后来,它传播到欧洲和美洲的其他地区。到20世纪,它以殖民的形式扩展到非洲和亚洲大陆。新的社会和经济生活模式在世界各地变得明显,这标志着一个被称为“现代化”的新时代的开始。现代化重新定义了城市生活,城市化成为现代化的必然前提。城乡关系发生了范式转变。新的社会政治环境使乡村退居次要地位。乡村资源被抽干以支持城市生活。农村对城市的从属关系产生了。因此,城市化迅速发展。目前世界上有这样的国家,城市化已经达到90%以上(Geoffrey, 2005)。印度有31%的人口居住在城市地区,年增长率为2.3% (Mani, 2016)。
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引用次数: 2
A Right to the City? A进城的权利?
Pub Date : 2016-03-28 DOI: 10.2139/ssrn.2755710
T. Halper
The right to the city has emerged as an influential concept in the study and conduct of urban affairs. To a striking degree, however, it has avoided rigorous criticism. This essay represents an effort to remedy that situation.
城市权在城市事务的研究和处理中已经成为一个有影响的概念。然而,它在很大程度上避免了严厉的批评。这篇文章代表了一种纠正这种情况的努力。
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引用次数: 1
How to Catch Mutual Effects in Clusters: Comparative Study of Transitional and Developed Economies 如何抓住集群的相互效应:转型经济体与发达经济体的比较研究
Pub Date : 2012-12-01 DOI: 10.1504/IJTIS.2012.051532
A. Bykova, M. Molodchik
In recent years, links between spatial proximity, and firms’ formal and informal contacts have become a sufficient subject for research in the field of innovation, competitiveness and sustainable economic growth. We introduce a model for the quantitative evaluation of the relationship between cluster participation and innovation capabilities, as well with a company’s growth in value. The paper focuses on comparison in mutual effects for companies from transitional and developed economies. We use a sample of 284 traded European companies between 2005 and 2009 which were carefully applied and subjected to panel data analysis techniques. Our empirical findings show the positive mutual effects on innovation capabilities measured as intangible assets and companies’ economic value added for both transitional and developed economies. Hereby, these links are stronger in developed countries. Moreover, we identify the complementary factors to clustering, such as industry-level public R&D expenses, country innovation infrastructure development and location in a megalopolis.
近年来,空间接近性与企业正式和非正式接触之间的关系已成为创新、竞争力和可持续经济增长领域研究的重要课题。我们引入了一个模型,用于定量评估集群参与与创新能力以及公司价值增长之间的关系。本文重点比较了转型经济体和发达经济体企业的相互效应。我们以2005年至2009年间284家欧洲上市公司为样本,仔细应用并采用面板数据分析技术。我们的实证研究结果表明,无论是转型经济体还是发达经济体,以无形资产衡量的创新能力和企业的经济增加值之间都存在正相互影响。因此,这些联系在发达国家更为强烈。此外,我们还确定了产业层面的公共研发支出、国家创新基础设施发展和大都市区位等对集群的补充因素。
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引用次数: 0
Industry Connections and the Geographic Location of Economic Activity 产业联系与经济活动的地理位置
Pub Date : 2012-07-24 DOI: 10.2139/ssrn.2143419
W. Hanlon
This paper provides causal evidence that inter-industry connections can influence the geographic location of economic activity. To do so, it takes advantage of a large, exogenous, temporary, and industry-specific shock to the 19th century British economy. The shock was caused by the U.S. Civil War, which sharply reduced raw cotton supplies to Britain's important cotton textile industry, causing a four-year recession in the industry. The impact of the shock on towns in Lancashire County, the center of Britain's cotton textile industry, is compared to towns in neighboring Yorkshire County, where wool textiles dominated. The results suggest that this trade shock reduced relative employment growth in industries that were more related to the cotton textile industry, in towns that were more severely impacted by the shock. The impact persists for over two decades after the end of the U.S. Civil War, suggesting that temporary shocks, acting through inter-industry connections, can have long-term impacts on the distribution of industrial activity across locations.
本文提供了产业间联系可以影响经济活动地理位置的因果证据。为此,它利用了19世纪英国经济遭遇的一场巨大的、外生的、暂时的、特定行业的冲击。这次冲击是由美国内战引起的,这场战争大大减少了对英国重要的棉纺织工业的原棉供应,导致该工业持续了四年的衰退。英国棉纺织工业中心兰开夏郡的城镇受到的冲击,与以羊毛纺织品为主的邻近约克郡的城镇进行了比较。结果表明,在受冲击更严重的城镇,这种贸易冲击降低了与棉纺织工业关系更密切的行业的相对就业增长。这种影响在美国内战结束后持续了20多年,表明通过行业间联系产生的暂时冲击可能对工业活动在不同地区的分布产生长期影响。
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引用次数: 12
Innovation-Oriented Land-Use Policy at the Sub-National Level: Case Study Germany 创新导向的地方土地使用政策:以德国为例
Pub Date : 2011-12-29 DOI: 10.2139/ssrn.1977694
P. Friedrich, C. Nam
This study investigates major features of land-use strategies that German municipalities have adopted to attract innovative firms (IFs). In this context a two-stage competition model is introduced: firstly a municipality should solve economic and interest conflicts related to its preference for high-quality sites for IFs against the land needs of simple manufacturers. The second part of the model describes location competition among municipalities with high-quality sites for the location of IFs. German municipal land-use policy is well combined with industrial policy; this paper reveals the strengths and weaknesses of the urban real estate market in Potsdam, and its future opportunities and risks as the location of different economic activities are determined in the planning process. Science Park Adlershof (Berlin) is an output of the spatial-oriented technology policy, which creates incubators for innovative SMEs. Municipalities also cooperate, since it provides larger sites, generates economies of scale and contributes to a smooth suburbanisation process (see Leipzig).
本研究调查了德国市政当局为吸引创新公司而采用的土地利用战略的主要特点。在这种情况下,引入了一个两阶段的竞争模型:首先,市政当局应该解决经济和利益冲突,因为它倾向于为IFs提供高质量的场地,而不是简单制造商的土地需求。该模型的第二部分描述了拥有高质量站点的城市之间的位置竞争。德国市政土地使用政策与产业政策结合得很好;本文揭示了波茨坦城市房地产市场的优势和劣势,并在规划过程中确定了其作为不同经济活动所在地的未来机会和风险。Adlershof科技园(柏林)是空间导向技术政策的产物,它为创新型中小企业创造了孵化器。市政当局也进行合作,因为它提供了更大的场地,产生了规模经济,并有助于顺利的郊区化进程(见莱比锡)。
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引用次数: 9
期刊
IRPN: Local Innovation Systems (Sub-Topic)
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