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ТЕНДЕНЦИИ РАЗВИТИЯ ПРОДОВОЛЬСТВЕННОГО РЫНКА РОССИИ: РЕГИОНАЛЬНЫЙ АСПЕКТ. TRENDS IN THE RUSSIAN FOOD MARKET: A REGIONAL ASPECT. (Trends in the Russian Food Market: a Regional Aspect)
Pub Date : 2020-11-29 DOI: 10.2139/ssrn.3739390
L. Pushkareva
Russian Abstract: Современные преобразования в экономической жизни общества предъявляют требования к переоценке сложившихся экономических тенденций с позиций экономической безопасности страны. Во многих регионах страны ситуация, сложившаяся на продуктовом рынке, далека от идеальной. Значительная часть пищевой промышленности находится под контролем транснациональных корпораций, а современное собственное аграрное производство не покрывает потребности населения в значимых продуктах питания. В настоящей статье раскрываются тенденции развития отечественного продуктового рынка. Особое внимание уделено развитию зернового хозяйства и формированию хлебного рынка. Ситуация на Российском продуктовом рынке далека от идеальной. Задачей настоящего исследования является раскрытие негативных и позитивных тенденций, сложившихся на рынке продовольственных товаров в разных регионах страны. На региональных примерах рассматриваются особенности и перспективы развития сегментов продуктового рынка за период реформирования аграрного производства. Особое внимание уделено развитию хлебного рынка, современная организационная структура которого обуславливает развитие хлебного кластера. На региональных примерах рассматриваются особенности и перспективы развития сегментов продуктового рынка за период реформирования аграрного производства.

English Abstract: Modern changes in the economic life of society require a reassessment of existing economic trends in terms of the economic security of the country. In many regions of the country, the situation on the grocery market is far from ideal. A large part of the food industry is controlled by transnational corporations, and modern agricultural production does not cover the needs of the population for meaningful food. This article reveals the trends in the development of the domestic grocery market. Particular attention is paid to the development of the grain economy and the formation of the bread market. The situation on the Russian grocery market is far from ideal. The purpose of this study is to uncover the negative and positive trends that have developed in the food market in different regions of the country. Regional examples examine the specifics and prospects for the development of product market segments during the period of agricultural production reform. Particular attention is paid to the development of the bread market, the modern organizational structure of which determines the development of the bread cluster. Regional examples examine the specifics and prospects for the development of product market segments during the period of agricultural production reform.
俄罗斯的Abstract:社会经济生活中的现代变化要求重新评估该国的经济安全趋势。在全国许多地区,粮食市场的情况远非理想。食品工业的很大一部分是由跨国公司控制的,现代农业生产不包括人民对有意义食品的需求。本文揭示了国内粮食市场的发展趋势。特别关注粮食的发展和粮食市场的形成。俄罗斯粮食市场的情况远非理想。本研究的目标是揭示该国不同地区粮食市场的负面和积极趋势。区域例子反映了农业改革期间粮食市场部门的特点和发展前景。特别关注的是面包市场的发展,它的现代组织结构是面包集群的发展。区域例子反映了农业改革期间粮食市场部门的特点和发展前景。《经济危机》中的英文译本:《经济危机》中的现代潮流,《乡村经济安全》中的《经济危机》。在乡村庄园的疯狂行政区里,在长廊市场上的位置是一个遥远的地方。食品工业的大部分是由运输公司控制的,现代农业生产还没有满足需求。这个艺术评论是在家庭成长市场开发的趋势。Particular attention是为了开发grain经济和bread market的形状。俄罗斯grocery市场上的位置来自于ideal。这幅画的灵感来自于在乡村地区的食物市场上开发的。该地区的展览和项目是为了开发一系列的农业产品。这是为bread market开发的,这是现代组织的一部分,也是为bread cluster开发的一部分。该地区的展览和项目是为了开发一系列的农业产品。
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引用次数: 1
Research-Policy Linkages: Empirical Evidence From Agroeconomic Research in India 研究与政策的联系:来自印度农业经济研究的经验证据
Pub Date : 2020-11-07 DOI: 10.2139/ssrn.3727364
Balaji Sj, S. Babu, S. Pal
Policy-making processes in developing countries often continue to operate devoid of evidence. In this study, we explore the research-policy linkages between the agroeconomic research system (AERS) and the agricultural policy system (APS) in India. Specifically, we examine questions directed to the Ministry of Agriculture and Farmers’ Welfare in the two houses of the national parliament—the House of the People (Lok Sabha) and the Council of States (Rajya Sabha)—and filter them for key issues that confront the APS. In addition, using the list of research articles published in two major national agricultural economics journals, we examine the alignment of the AERS toward addressing pressing policy issues. We use 6,465 questions raised by elected representatives in the parliamentary houses and 377 research articles, both during the period 2014–2018. We use machine learning techniques for information retrieval because the required information is hidden as non-numerical text. Using tag clouds (lists of words by frequency), we identify key divergences between the concerns of the APS and the research focus of the AERS, and explore their linkages. To broaden our understanding, we employ latent Dirichlet allocation, a natural language processing technique that identifies crucial issues and automates their classification under appropriate clusters, to examine synergies between the research and policy systems. Results show remarkable alignment between the AERS and the APS, invalidating the two-communities hypothesis. We identify persistent issues in the policy domain that require the support of the research system, as well as potential areas for research system realignment.
发展中国家的决策过程往往继续在缺乏证据的情况下运作。在本研究中,我们探讨了印度农业经济研究系统(AERS)和农业政策系统(APS)之间的研究-政策联系。具体来说,我们审查了国会两院——人民院(Lok Sabha)和邦议会(Rajya Sabha) ——向农业和农民福利部提出的问题,并对APS面临的关键问题进行筛选。此外,我们利用两家主要国家农业经济学期刊上发表的研究文章列表,研究了AERS在解决紧迫政策问题方面的一致性。我们使用了2014 - - 2018年期间议会选举代表提出的6,465个问题和377篇研究文章。我们使用机器学习技术进行信息检索,因为所需的信息被隐藏为非数字文本。使用标签云(按频率排列的单词列表),我们确定了APS关注的问题与AERS研究重点之间的关键分歧,并探讨了它们之间的联系。为了扩大我们的理解,我们采用了潜在的狄利克雷分配,这是一种自然语言处理技术,可以识别关键问题并在适当的集群下自动分类,以检查研究和政策系统之间的协同作用。结果显示AERS和APS之间存在显著的一致性,证明两群落假说无效。我们确定了政策领域中持续存在的问题,这些问题需要研究系统的支持,以及研究系统重组的潜在领域。
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引用次数: 0
Indian Farm Wages: Trends, Growth Drivers and Linkages with Food Prices 印度农场工资:趋势、增长动力及其与食品价格的联系
Pub Date : 2020-11-04 DOI: 10.2139/ssrn.3724928
S. Saini, A. Gulati, Joachim von Braun, Lukas Kornher
This study looks at trends in Indian farm wages, analyses their linkage with food prices, and identifies factors which drove their growth in real terms. We employ quantitative and qualitative analysis techniques for this purpose. A vector-error correction model (VECM) is used to determine the linkage between farm wage inflation and food inflation, and a pooled mean group (PMG) estimation method, used for dynamic heterogeneous panels, is used to identify the drivers of growth in real farm wages. In last 20 years (1998-99 to 2017-18), wages of India’s farm labourers increased at an average annual rate of 9.3 per cent in nominal and 3.2 per cent in real terms. For an average agricultural labourer, the daily wage rates increased from less than INR 45 in 1998-99 to about INR 229 in 2017-18. In real terms (2004-05 prices), this increase was from INR 50 to about INR 90 per day. The empirical analysis of the monthly wage time series identified a structural break in January 2007. Specifically, the curve is near-flat before this break-point subsequent which it rises sharply. On the relation between food inflation and wage growth, evidence was found of a food-wage spiral where changes in food prices and farm wages were estimated to impact each other. However, the impact of food inflation emerged to be stronger on wages than vice-versa and this impact was observed to strengthen post 2007-08. The panel study (1987-88 to 2015-16) on the drivers of real wage growth was conducted around the January 2007 structural break. Before this break, growth in real wages was estimated to be mostly driven by growth in the agriculture sector. Any influence of non-agricultural sectors (manufacturing and construction) did not emerge significant during this period. However, post the break, the growth witnessed in both- non-agricultural (manufacturing and construction sectors) and agricultural sectors explained the sharp increases in real farm wages. The large public rural employment program, MGNREGA (introduced in 2005) was identified as a third potential force of influence on rural wages; however, among other significant factors, its contribution to farm wage growth was estimated to be low and with a lag. Policy implications based on these findings are that for faster growth in real farm wages, focus needs to be on augmenting labour productivity in agriculture. In order to pursue that, one needs to lead reforms in agriculture that can accelerate agri-GDP growth and ensure that the rest of the economy, especially the manufacturing and construction sector, grow much faster pulling labour out from the agricultural sector to higher productivity jobs in manufacturing, construction, and possibly also services.
这项研究着眼于印度农场工资的趋势,分析了它们与食品价格的联系,并确定了推动其实际增长的因素。为此,我们采用定量和定性分析技术。使用向量误差修正模型(VECM)来确定农业工资通胀与食品通胀之间的联系,并使用混合平均组(PMG)估计方法(用于动态异质面板)来确定实际农业工资增长的驱动因素。在过去的20年里(1998-99年至2017-18年),印度农业劳动者的名义工资平均每年增长9.3%,实际工资增长3.2%。对于一名普通农业劳动者来说,日工资率从1998-99年的不到45印度卢比上升到2017-18年的229印度卢比左右。按实际价格计算(2004- 2005年价格),这一增幅从每天50印度卢比增加到大约90印度卢比。对月薪时间序列的实证分析发现,2007年1月出现了结构性断裂。具体来说,曲线在这个断点之前接近平坦,随后急剧上升。关于食品通胀与工资增长之间的关系,研究人员发现了食品工资螺旋式上升的证据,其中食品价格和农民工资的变化估计会相互影响。然而,食品通胀对工资的影响似乎强于工资通胀对食品通胀的影响,而且这种影响在2007-08年之后得到了加强。关于实际工资增长驱动因素的小组研究(1987-88年至2015-16年)是在2007年1月结构性断裂前后进行的。在此之前,实际工资的增长估计主要是由农业部门的增长推动的。在此期间,非农业部门(制造业和建筑业)的任何影响都不明显。然而,在休息之后,非农业(制造业和建筑业)和农业部门的增长解释了实际农业工资的急剧增长。大型公共农村就业方案MGNREGA(2005年推出)被确定为影响农村工资的第三种潜在力量;然而,除其他重要因素外,它对农业工资增长的贡献估计很低,而且有滞后性。基于这些发现的政策启示是,为了更快地提高实际农业工资,重点需要放在提高农业劳动生产率上。为了实现这一目标,中国需要领导农业改革,以加速农业gdp增长,并确保经济的其他部门,特别是制造业和建筑业,增长得更快,将劳动力从农业部门转移到制造业、建筑业,甚至服务业的生产率更高的工作岗位。
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引用次数: 1
Digitization of the Emerging Economy: An Exploratory and Explanatory Case Study 新兴经济的数字化:一个探索性和解释性的案例研究
Pub Date : 2020-11-03 DOI: 10.22495/jgrv9i4art2
Muhammad Mahboob Ali
Digitization has transformed societies and economies throughout the world. This exploratory and explanatory research has been performed in the context of digitization of Bangladesh economy. The research question is whether the transformation of Bangladesh towards the digital economy can act effectively and efficiently for the benefits of the society and the economy. Quantitative and qualitative analysis was conducted. Sixteen hypotheses were tested based on the Chi-square test. The time period of the study was from April 1, 2019, to December 31, 2019. The Chi-square test findings were significant for the following null hypotheses: Internet of Thinking will not bring benefits of the human beings; robots are not needed for industries; big data cannot be used for the business intelligence; artificial intelligence (AI) is not effective; bitcoin transactions should not be allowed; the banking sector is not relatively digitalized; chatbots do not need to be used in banks; drones cannot be used for commercial purpose; robots cannot be used for education purpose; farmers must not learn to yield wirelessly. Another six null hypotheses were rejected. Fear of losing employment was the key obstruction to execute the 4th Industrial Revolution (4IR) in the country as revealed from the study. Proper information and communication technology (ICT) based education, preparation and knowledge were required. Good governance and regulation should be established with the help of digitization in Bangladesh. The study is suggested to answer the research question, if the benefit from transforming the society to the digital economy may outweigh negative impacts and turn threats into opportunities, reduce demand for labor and disguised unemployment and narrow down the scope of creating new employment opportunities in the country. The potential unlocking system in the global market is feasible through ensuring digitization of Bangladesh society.
数字化已经改变了世界各地的社会和经济。在孟加拉国经济数字化的背景下进行了探索性和解释性研究。研究的问题是孟加拉国向数字经济的转型是否能够有效和高效地为社会和经济带来利益。进行了定量和定性分析。采用卡方检验对16个假设进行检验。研究时间为2019年4月1日至2019年12月31日。对于以下零假设,卡方检验结果具有显著性:思维互联网不会给人类带来利益;工业不需要机器人;大数据不能用于商业智能;人工智能(AI)效果不佳;不应该允许比特币交易;银行业没有相对数字化;聊天机器人不需要在银行使用;不得将无人机用于商业用途;不得将机器人用于教育目的;农民们不应该学会盲目地屈服。另外6个零假设被拒绝。研究显示,对失业的恐惧是该国实施第四次工业革命(4IR)的主要障碍。需要适当的以信息和通信技术为基础的教育、准备和知识。孟加拉国应该借助数字化建立良好的治理和监管。该研究建议回答研究问题,如果社会转型到数字经济的好处可能超过负面影响,变威胁为机会,减少劳动力需求和变相失业,缩小在该国创造新就业机会的范围。通过确保孟加拉国社会的数字化,全球市场的潜力解锁系统是可行的。
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引用次数: 11
Analysis of Livelihood in the World and Its Impact on World Economy 世界民生分析及其对世界经济的影响
Pub Date : 2020-10-22 DOI: 10.2139/ssrn.3717265
N. Khan, S. Fahad, M. Naushad, S. Faisal
The study was carried out since 19th October 2020. The universe of the study was the world. The major objective was to analyze livelihood in the world and its impact on the world economy. Total 36 articles were downloaded from the net and analyzed at depth and wrote the conclusion and abstract and result. The study indicates that livelihood play great role for survival of life. Without livelihood the survival of life is impossible. So every country of the world tries for increasing of livelihood sources. The major livelihood sources are the agriculture. Majority world people are engaged with this occupation but very few people of the rural area are engaged with other non farming activities in the rural area. Some people work in industry while some work in fishing. Similarly some people work in government institution. These all activities play great role in survival of life and livelihood.God has created this world for the human being. There multiple things have produced for survival of life . God has created the ecosystem when any one disturb this system then it create problem for humanity of the world. The human is selfish and they always want benefit while they do not care the world and because of this the ecosystem of the world have been disturbed which in the long create problem for human being survival The industrial countries use industry for survival of life while latter on this industry make the environment polluted which create different diseases in the world community which worse the condition of the human. So it is necessary to care the world and use the world in proper way and never miss utilize its material because in long run disturb the ecosystem of the world. So many things have made GOD for the beneficial of world society but sometime over use create the imbalance in this world which disturbs the livelihood of the world community. The study concludes that livelihood is the means, capability and asset for survival of life. Human being is the living organism and every living organism need food for survival. Human being also needs food for their survival. There are flora and fauna in this world. They all need food for their survival. The human being is also the living organism which needs foods and therefore they perform different activities on daily basis and produced food. There are three type strategies are used for livelihood, namely intensification of agriculture, Diversification of livelihood and migration. The people cultivate the land and grow the seed of different crops and produced the production for their daily consumption. Extra production they sell in the market and get money which are saved or used for other activities of daily life while mostly used on their basic needs which are compulsory for survival of life. Similarly some people work on daily wages and earn the money then use on basic needs while some people work in the industries and earn the money and they also used on the basic needs and other activities of da
针对存在的问题,建议关注世界资源,通过教育将知识传递给人,提高人的效率,对一个国家的经济发展起到重要作用;为改善本国人民的生活提供良好的环境;建立完善的人力资源开发制度;犯罪应当从世界社会中消除;在世界范围内发展自由贸易,改善民生;为促进世界经济增长,为整个国际社会提供和平;为了人类的繁荣,世界上应该增加就业机会;始终关注世界贫困问题,制定不同的解决方案;农业部门应该为粮食生产的供应而发展,因为没有粮食世界的生存是不可能的。首先是生存,然后是享受;发展其他经济部门,改善民生;对生命的生存和世界各国的发展给予应有的重视;为了野生动物的安全,为了改善民生,应该保护森林。
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引用次数: 2
Tenancy, Land Redistribution, and Economic Growth A Case of Korea, 1920-1960 租赁、土地再分配与经济增长——以1920-1960年的韩国为例
Pub Date : 2020-10-13 DOI: 10.2139/ssrn.3710391
Jea Hwan Hong, Duol Kim
Agriculture is the largest and the most important industries in many developing countries. A typical pattern observed in these countries is high inequalities of land ownership, that is, a small number of people own large portion of arable lands and large number of farmers have a small piece of land or even don’t have anything. Farmers usually lease land wholly or partially from large landowners and pay typically 50% of their harvest. This tenancy or sharecropping contract imposes heavy burden on farmers, which results in their poverty. Scholars and policymakers claimed that the burden of rent lowers productivity of farmers and that the low income further prevents the farmers from investing for the future. These factors aggravate living condition of farmers and ultimately economic growth of the country.

Land reform is regarded as a solution to break this vicious circle. Land redistribution can improve farmers’ income, and this allows them to invest for improve quality of land or for educating their children. Therefore, it is very important to examine how would land reform is implemented, how would land reform changes level of inequality, and how would it change production activities and investment, and so forth.

The goal of this study is to investigate, arguably, a successful case of land reform, the land reform of Korea. During the colonial period from 1910 to 1945, almost 50% of farmers were tenants without having any land at all and 20% were partial tenants. After the liberation in 1945, the Korean government made efforts to perform land reform, and it was completed by 1951. Investigating the impact of land reform on agricultural productivity and human capital investment will contribute to better understanding Korean economic development. And it will provide important implications for many developing countries. For this goal, we reviewed previous studies on land reform. And then, we explored the impact of land reform on agricultural productivity and its contribution to human capital accumulation. Using prefecture level data, we estimated the impact of land ownership in this period. Our estimation shows that land reform improved agricultural productivity. This implies that land reform could contribute to economic growth after the liberation.

We then performed empirical analysis on the relationship between the land reform and the secondary school enrollment rate is conducted to examine whether the land reform has contributed to the accumulation of human capital in Korea by utilizing the gun level data.

The possibility of effect being different on gender is also evaluated. The results imply that the region with higher increase in share of independent farmers during the land reform show higher increase in secondary school enrollment rate. This proves the hypothesis that land reform influenced positively on the accumulation of human capital. Also, the secondary school enrollment rate of female increased as the share of i
农业是许多发展中国家最大和最重要的产业。在这些国家观察到的一个典型模式是土地所有权的高度不平等,也就是说,少数人拥有大部分可耕地,而大量农民拥有一小块土地,甚至一无所有。农民通常全部或部分从大地主手中租赁土地,通常支付50%的收成。这种租赁合同给农民造成了沉重的负担,使他们陷入贫困。学者和政策制定者声称,租金负担降低了农民的生产力,低收入进一步阻碍了农民对未来的投资。这些因素加剧了农民的生活状况,最终影响了国家的经济增长。土地改革被认为是打破这种恶性循环的解决办法。土地再分配可以提高农民的收入,这使他们能够投资改善土地质量或教育子女。因此,研究土地改革将如何实施,土地改革将如何改变不平等水平,以及它将如何改变生产活动和投资等等,是非常重要的。本研究的目的是调查可以说是土地改革的一个成功案例,即韩国的土地改革。在1910年至1945年的殖民时期,几乎50%的农民是没有任何土地的佃户,20%是部分佃户。1945年光复后,韩国政府进行了土地改革,并于1951年完成。研究土地改革对农业生产力和人力资本投资的影响,有助于更好地了解韩国的经济发展。它将对许多发展中国家产生重要影响。为此,我们回顾了以往关于土地改革的研究。然后,探讨了土地改革对农业生产力的影响及其对人力资本积累的贡献。利用地级数据,我们估计了这一时期土地所有权的影响。我们的估计表明,土地改革提高了农业生产率。这意味着土地改革有助于解放后的经济增长。然后,我们对土地改革与中学入学率之间的关系进行了实证分析,利用枪级数据来检验土地改革是否促进了韩国人力资本的积累。对不同性别影响的可能性也进行了评价。结果表明,在土地改革期间,独立农民比例增加越高的地区,中学入学率的增长越高。这证明了土地改革对人力资本积累产生正向影响的假设。此外,女性中学入学率随着独立农民比例的增加而增加,而男性中学入学率的增加在统计学上不显著。这一结果可以解释为,当农民的收入水平因土地改革而提高时,由于男性后代偏好而被忽视的女性相对于男性获得了更多的受教育机会。
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引用次数: 1
Study of Peculiarities of Land Relations Through the Prism of Economic Theories 从经济理论的角度研究土地关系的特殊性
Pub Date : 2020-09-30 DOI: 10.21303/2504-5571.2020.001428
V. Moroz
The paper defines the essence of the notion “land relations” and outlines their main peculiarities, based on the analysis of scientific works of classics of the world economic thought, study of the historical experience and consideration of practical aspects of lands resource use in economy. Negative results of the influence of the neoliberalism theory on the formation of land relations in Ukraine and the former USSR countries after getting independence are substantiated. Attention is accented on a necessity of taking into account national interests at reforming land relations. The aim of the paper is to study peculiarities of land relations through the prism of economic theories, taking into account their development evolution, and formation of the complex approach to defining the essence of the notion “land relations” as an object of financial-economic regulation. The methods of empirical and retrospective analysis of the world and native economic thought was used in the paper for separating fundamental bases of land relations; the methods of generalization and comparison of scientific approaches as to defining the essence of land relations and their elements; system approach for substantiating the economic base of land relations, determination of their elements and principles. Key peculiarities of land relations, complexly discovering their essence, taking into account a necessity to create an effective economic-legal mechanism of their regulation within the conflict of the neoliberal economic ideology and national interests have been formulated. There has been offered a wide approach to understanding an object of land relations that is land resources; it has been proved, that realization of all legal actions with land resources results from a necessity to observe the factor of lands suverenization; the economic base of land relations has been substantiated; principles of land relations, resulting from a necessity of the rational land use, observance of national interests and guaranteeing of food safety of the state, have been outlined.
本文通过对世界经济思想经典科学著作的分析,对历史经验的研究和对土地资源经济利用实践方面的思考,界定了“土地关系”概念的本质,概述了“土地关系”概念的主要特点。新自由主义理论对乌克兰和前苏联国家独立后土地关系形成的负面影响得到了证实。强调在改革土地关系时必须考虑到国家利益。本文的目的是通过经济理论的棱镜来研究土地关系的特殊性,考虑到它们的发展演变,并形成一种复杂的方法来定义“土地关系”作为金融-经济调节对象的概念的本质。本文采用实证分析和回溯分析的方法,对中外经济思想进行分析,分离出土地关系的基本依据;界定土地关系本质及其要素的科学方法的概括与比较方法;确立土地关系经济基础的系统途径,确定土地关系要素和原则。土地关系的关键特点,复杂地发现其本质,考虑到在新自由主义经济意识形态和国家利益的冲突中建立有效的经济法律机制的必要性,已经制定。有人提出了一种广泛的方法来理解土地关系的对象,即土地资源;实践证明,一切利用土地资源的法律行为的实现,都必须遵守土地监管的要素;土地关系的经济基础已得到证实;从合理利用土地、维护国家利益和保障国家食品安全的需要出发,提出了土地关系原则。
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引用次数: 0
Startup Search Costs 创业公司搜索成本
Pub Date : 2020-09-19 DOI: 10.2139/ssrn.3100395
David P. Byrne, Nicolas de Roos
Workhorse economic models used for studying the market impacts of search frictions assume constant search costs: individuals pay the same cost to obtain price information each time they search. This paper provides evidence on a new form of search costs: startup costs. Exploiting a natural experiment in retail gasoline, we document how a temporary, large exogenous shock to consumers' search incentives leads to a substantial, permanent increase in price search. A standard search model fails to explain such history-dependence in search, while it follows directly from a model with a one-time up-front cost to start searching.
用于研究搜索摩擦对市场影响的主力经济模型假设了恒定的搜索成本:个人每次搜索时为获得价格信息而支付的成本相同。本文提供了一种新的搜索成本形式的证据:启动成本。利用零售汽油的自然实验,我们记录了消费者搜索动机的临时,巨大的外生冲击如何导致价格搜索的实质性,永久性增加。标准的搜索模型无法解释搜索中的这种历史依赖,而它直接遵循具有一次性开始搜索成本的模型。
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引用次数: 5
Cleaning Up the Rust Belt: Housing Market Impacts of Removing Legacy Pollutants 清理锈带:消除遗留污染物对住房市场的影响
Pub Date : 2020-09-18 DOI: 10.2139/ssrn.3695140
Alecia Cassidy, R. Meeks, M. Moore
The Great Lakes and their tributaries make up the largest freshwater system on the planet, providing drinking water and recreational value to millions of people. Yet manufacturing plants have left a legacy of toxic pollutants in the region, creating the stigma of the "Rust Belt." In 1987, the Area of Concern (AOC) Program designated 31 areas in the region as having hazardous water quality. Over 700 million federal dollars have been spent since 2004 on grants to clean up the areas. Our paper is the first to provide causal estimates of the program's impact on local housing markets. We find negative and statistically significant effects of AOC designation, indicating that consumers value clean water and incorporate information about water quality into their housing purchases. We develop two estimators to bound the effects of remediation grants on housing prices. Our estimates imply that the benefits of remediation grants range from $16.9 billion to $25.6 billion, greatly exceeding grant costs.
五大湖及其支流构成了地球上最大的淡水系统,为数百万人提供饮用水和娱乐价值。然而,制造工厂在该地区留下了有毒污染物的遗产,造成了“铁锈地带”的耻辱。1987年,关注区域(AOC)计划指定了该地区31个水质危险的地区。自2004年以来,联邦政府已经花费了7亿多美元用于清理这些地区。我们的论文首次提供了该计划对当地住房市场影响的因果估计。我们发现AOC指定的负面和统计显著的影响,表明消费者重视清洁水,并将有关水质的信息纳入他们的住房购买。我们开发了两个估计来约束补救补助金对房价的影响。我们的估计表明,修复补助金的收益在169亿至256亿元之间,远远超过补助金的成本。
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引用次数: 4
Crude Oil Prices and Crypto-Assets: What Are the Effects of COVID-19 Pandemic? 原油价格和加密资产:COVID-19大流行的影响是什么?
Pub Date : 2020-09-18 DOI: 10.2139/ssrn.3694917
Héla Mzoughi, Yosra Ghabri, K. Guesmi
The current global COVID-19 pandemic is adversely affecting the oil market (West Texas Intermediate) and crypto-assets markets. This paper empirically investigates the extent to which interdependence in markets may be driven by COVID-19 effects. We fit copulas to pairs of before and after returns, analyze the observed changes in the dependence structure, and discuss asymmetries on the propagation of crisis. We also use the findings to construct portfolios possessing desirable expected behavior. We find that the dependence structure changes significantly after the global pandemic providing valuable information on how COVID- 19 crisis affects inter-dependencies. The results also prove the intrinsic characteristic of the gold as a safe haven.
当前的全球COVID-19大流行对石油市场(西德克萨斯中质原油)和加密资产市场产生了不利影响。本文实证研究了市场相互依存在多大程度上可能受到COVID-19效应的驱动。我们对收益前后的对拟合了copula,分析了观察到的依赖结构的变化,讨论了危机传播的不对称性。我们还使用这些发现来构建具有理想预期行为的投资组合。我们发现,在全球大流行之后,依赖结构发生了显著变化,为COVID- 19危机如何影响相互依赖提供了有价值的信息。结果也证明了黄金作为避险资产的内在特性。
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引用次数: 3
期刊
Agricultural & Natural Resource Economics eJournal
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