ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)最新文献

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The Impact of Neighboring Markets on Renewable Locations, Transmission Expansion, and Generation Investment 邻近市场对可再生能源选址、输电扩张和发电投资的影响
Jonas Egerer, Veronika Grimm, Thomas Kleinert, Martin Schmidt, Gregor Zöttl
{"title":"The Impact of Neighboring Markets on Renewable Locations, Transmission Expansion, and Generation Investment","authors":"Jonas Egerer, Veronika Grimm, Thomas Kleinert, Martin Schmidt, Gregor Zöttl","doi":"10.2139/ssrn.3498339","DOIUrl":"https://doi.org/10.2139/ssrn.3498339","url":null,"abstract":"Abstract Many long-term investment planning models for liberalized electricity markets either optimize for the entire electricity system or focus on confined jurisdictions, abstracting from adjacent markets. In this paper, we provide models for analyzing the impact of the interdependencies between a core electricity market and its neighboring markets on key long-run decisions. This we do both for zonal and nodal pricing schemes. The identification of welfare optimal investments in transmission lines and renewable capacity within a core electricity market requires a spatially restricted objective function, which also accounts for benefits from cross-border electricity trading. This leads to mixed-integer nonlinear multilevel optimization problems with bilinear nonconvexities for which we adapt a Benders-like decomposition approach from the literature. In a case study, we use a stylized six-node network to disentangle different effects of optimal regional (as compared to supra-regional) investment planning. Regional planning alters investment in transmission and renewable capacity in the core region, which affects private investment in generation capacity also in adjacent regions and increases welfare in the core region at the cost of system welfare. Depending on the congestion-pricing scheme, the regulator of the core region follows different strategies to increase welfare causing distributional effects among stakeholders.","PeriodicalId":101533,"journal":{"name":"ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128243519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Do Natural Resources Help or Hinder Development? Resource Abundance, Dependence, and the Role of Institutions 自然资源是促进还是阻碍发展?资源丰富、依赖和制度的作用
Addisu A. Lashitew, E. Werker
{"title":"Do Natural Resources Help or Hinder Development? Resource Abundance, Dependence, and the Role of Institutions","authors":"Addisu A. Lashitew, E. Werker","doi":"10.2139/ssrn.3632059","DOIUrl":"https://doi.org/10.2139/ssrn.3632059","url":null,"abstract":"Abstract The resource curse literature presents conflicting evidence on the relationship between natural resources and development. We evaluate the direct effect of resources on developmental outcomes vis-a-vis their indirect effect through the weakening of political institutions using a 3SLS instrumental variable setup that simultaneously estimates development outcomes and institutions. We find that resource abundance and resource dependence affect development outcomes through different channels. While resource abundance generally has a direct positive effect on developmental outcomes, resource dependence has a stronger negative indirect effect that operates through its negative impact on institutional quality. The results also depend on the type of development outcome considered, with more consistent positive direct effects found for physical capital measures and stronger negative indirect effects for human capital development. The use of a simultaneous framework and dual measures of resources reconciles seemingly contradictory findings in earlier work.","PeriodicalId":101533,"journal":{"name":"ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116805246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 56
The High Cost of Electricity Price Uncertainty 电价不确定性的高成本
Anastasiya Ostrovnaya, I. Staffell, Charles Donovan, R. Gross
{"title":"The High Cost of Electricity Price Uncertainty","authors":"Anastasiya Ostrovnaya, I. Staffell, Charles Donovan, R. Gross","doi":"10.2139/ssrn.3588288","DOIUrl":"https://doi.org/10.2139/ssrn.3588288","url":null,"abstract":"The rapid worldwide growth of renewable energy has been largely underpinned by government support over the past decade. The need for subsidy is fading as the cost of electricity from renewables converges with that from fossil fuels, but the withdrawal of support schemes will also remove the revenue stability offered by auction schemes and contracts for differences. Exposure to market risk (fluctuating wholesale electricity prices) raises the cost of capital for merchant renewable generators. Here we quantify the extent to which increased volatility in future power prices affects revenues by combining electricity market and stochastic discounted cash flow models. Renewable projects relying purely on merchant pricing may see cost of capital rise by two percentage points (e.g. from 7% to 9%). Unless new private or government actors provide hedging solutions, fewer developers will undertake new renewable energy projects, slowing the energy transition and increasing its cost to society.","PeriodicalId":101533,"journal":{"name":"ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117138961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Transición energética en Alemania e integración de fuentes de energías no convencionales (Energy Transition in Germany and Integration Non-Conventional Energy Sources) 德国能源转型与非常规能源一体化(德国能源转型与非常规能源一体化)
J. Botero, D. Cardona, John Garcia Rendon
{"title":"Transición energética en Alemania e integración de fuentes de energías no convencionales (Energy Transition in Germany and Integration Non-Conventional Energy Sources)","authors":"J. Botero, D. Cardona, John Garcia Rendon","doi":"10.2139/ssrn.3524984","DOIUrl":"https://doi.org/10.2139/ssrn.3524984","url":null,"abstract":"<b>Spanish Abstract:</b> La política energética alemana ha sido, sin duda, un referente a nivel mundial enlo relativo a energías renovables. Con la implementación de la Ley de energías renovables (Erneuerbare Energien Gesetz) en 2000, el 36% del consumo bruto de electricidad en 2018 provino de fuentes renovables. Además, las emisiones de gases de efecto invernadero cayeron en 328 millones de toneladas entre 1990 y 2016, al pasar de 1264 a 936 mill ton de CO2. No obstante, esto también ha incrementado el costo de las restricciones, en 2017, alcanzó un nuevo récord de 1400 millones de euros y el precio al consumidor final se incrementó sustancialmente, siendo uno de los más altos de la Unión Europea, pero ya han venido reduciéndose, conforme ha reducido el costo de las nuevas tecnologías. Aun así, el consenso de la sociedad, es que vale la pena pagar esos sobrecostos. Por tanto, es importante conocer el programa de transición energética que ha vivido Alemania y sus efectos, el cual es el objetivo de este<br>paper<br><br><b>English Abstract:</b> German energy policy has undoubtedly been a worldwide benchmark for renewable energy. With the implementation of the Renewable Energy Sources Act in 2000, 36% of gross electricity consumption in 2018 came from renewable sources. In addition, greenhouse gas emissions fell by 328 million tonnes between 1990 and 2016. However, this has also increased the cost of stabilizing the grid, reaching a new record of 1.4 billion euros in 2017 and the price to the final consumer increased substantially, being one of the highest in the European Union. However, it has already been reducing, as it has reduced the cost of new technologies. Even so, the consensus of society is that these extra costs are worth paying. Therefore, it is important to know the energy transition program that Germany has experienced and its effects, which is the objective of this paper.","PeriodicalId":101533,"journal":{"name":"ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130469481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Youth Empowerment in Non-Timber Forest Products (NTFPs) of Sub-Saharan Africa: The Role of Corporate Social Responsibility in Niger Delta, Nigeria 撒哈拉以南非洲非木材林产品(NTFPs)的青年赋权:尼日利亚尼日尔三角洲企业社会责任的作用
J. I. Uduji, E. N. Okolo-Obasi
{"title":"Youth Empowerment in Non-Timber Forest Products (NTFPs) of Sub-Saharan Africa: The Role of Corporate Social Responsibility in Niger Delta, Nigeria","authors":"J. I. Uduji, E. N. Okolo-Obasi","doi":"10.2139/ssrn.3484736","DOIUrl":"https://doi.org/10.2139/ssrn.3484736","url":null,"abstract":"\u0000Purpose\u0000The purpose of this paper is to critically examine the multinational oil companies’ (MOCs’) corporate social responsibility (CSR) initiatives in Nigeria. Its special focus is to investigate the impact of Global Memorandum of Understandings (GMOUs) on rural young people involved in non-timber forest products (NTFPs) for sustainable livelihood in Niger Delta, Nigeria.\u0000\u0000\u0000Design/methodology/approach\u0000Data for this study were collected from primary sources, using participatory rural appraisal technique of semi-structured interview questionnaire. The use of participatory research techniques in collecting CSR impact data especially as it concerns the rural young people is because it involves the people being studied, and their views on all the issues are paramount. Both descriptive and inferential statistics were used to analyse the data. Inferential statistical tool – estimation of logit model was used to test the two research hypothesis.\u0000\u0000\u0000Findings\u0000The results indicate that GMoUs have not given adequate attention to young people as a special target sub-group who live in rural areas and depend mostly on NTFPs. Results also show that a number of factors hindering rural young people from the use and development of NTFPs include a policy vacuum, non-destructive harvesting, and destruction of natural habitats, bushfires, population growths and high demands.\u0000\u0000\u0000Research limitations/implications\u0000The semi-structured interview questionnaire was directly administered by the researchers with the help of research assistants. The use of local research assistants was because of the inability of the researchers to speak the different local languages and dialects of the many ethnic groups of Ijaws, Ogonis, Ikweres, Etches, Ekpeyes, Ogbas, Engennes, Obolos, Isokos, Nembes, Okirikas, Kalabaris, Urhobos, Iteskiris, Igbos, Ika-Igbos, Ndonis, Orons, Ibenos, Yorubas, Ibibios, Anangs, Efiks, Bekwarras, Binis, Eshans, Etsakos, Owans, Itigidis, Epies, Akokoedos, Yakkurs, etc., in the sampled rural communities.\u0000\u0000\u0000Practical implications\u0000An appropriate GMoU-intervention framework for sustainable promotion of NTFPs, domestication of NFTPs, improving harvesting and processing techniques are necessary to facilitate good security, reduction of poverty and improved livelihoods, particularly for the economically-marginalized and forest-dependent rural young people is imperative.\u0000\u0000\u0000Social implications\u0000Sustainable livelihoods of the forest-dependent rural young people in sub-Saharan Africa would require some focussed CSR interventions on the NTFPs for sustainable livelihood. Facilities pertaining to storage, grading, processing and value addition through the convergence of existing schemes and programmes should be promoted and created. MOCs are in a position to empower the rural young people with information about the market, policy and products to enable the rural people strategizing and accessing returns from NTFPs in sub-Saharan Africa.\u0000\u0000\u0000Originality/value\u0000This research adds t","PeriodicalId":101533,"journal":{"name":"ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121327140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Trade Specialisation and Performance in Global Value Chains 全球价值链中的贸易专业化与绩效
Filippo Bontadini
{"title":"Trade Specialisation and Performance in Global Value Chains","authors":"Filippo Bontadini","doi":"10.2139/ssrn.3414324","DOIUrl":"https://doi.org/10.2139/ssrn.3414324","url":null,"abstract":"This paper investigates whether trade specialisation explains economies’ trade performance within a Global Value Chain (GVC) context. We consider trade specialisation in natural resources, high and low tech manufacturing and business services, before and after the financial crisis. The aimed contribution of this paper is to shed light on the effects of trade specialisation as measured in domestic value added embodied in exports rather than gross exports. We add to the literature on GVCs by: (i) studying the role of the domestic productive structure in countries’ trade specialisation and performance, (ii) accounting for the rate of changes in trade specialisation as affecting GVC performance. We employ Balassa indexes based on value added flows in a GMM dynamic panel framework. We find that trade specialisation in low-tech manufacturing and natural resources have a negative impact on value added exported by countries. High-tech manufacturing and knowledge intensive services exhibit a positive effect during the crisis period. We discuss these findings in relation to the recent debates on the role of manufacturing and premature de-industrialisation in developing countries.","PeriodicalId":101533,"journal":{"name":"ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115166232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Wilderness Conservation and the Reach of the State: Evidence from National Borders in the Amazon 荒野保护和国家的范围:来自亚马逊国家边界的证据
R. Burgess, F. Costa, B. Olken
{"title":"Wilderness Conservation and the Reach of the State: Evidence from National Borders in the Amazon","authors":"R. Burgess, F. Costa, B. Olken","doi":"10.3386/W24861","DOIUrl":"https://doi.org/10.3386/W24861","url":null,"abstract":"Preserving wilderness ecosystems in developing countries is challenging because their remote location places them far from state control. We investigate this using 30x30 meter satellite data to determine how Amazonian deforestation changes discretely at the Brazilian international border. In 2000, Brazilian pixels were 30 percent more likely to be deforested, and between 2001 and 2005 annual Brazilian deforestation was more than 3 times the rate observed across the border. In 2006, just after Brazil introduces policies to reduce illegal deforestation, these differences disappear. These results demonstrate the power of the state to affect whether wilderness ecosystems are conserved or exploited.","PeriodicalId":101533,"journal":{"name":"ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115341857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Communal Property Rights and Deforestation: Evidence From Colombia 公有产权与森林砍伐:来自哥伦比亚的证据
Mauricio Romero, S. Saavedra
{"title":"Communal Property Rights and Deforestation: Evidence From Colombia","authors":"Mauricio Romero, S. Saavedra","doi":"10.2139/ssrn.3179052","DOIUrl":"https://doi.org/10.2139/ssrn.3179052","url":null,"abstract":"Deforestation is a large contributor to climate change. Controlling deforestation is difficult, especially because there are 484 million of hectares of forest that are community owned. In principle this arrangement could lead to a tragedy of the \"commons\", however there could be economies of scale on monitoring outsiders' deforestation. We study the effect of communal titling on deforestation in Colombia, using a difference-in-differences strategy at the border. We find that deforestation decreased only in small communal titles, even when the control area are national parks. This suggests that communal titling can be effective on reducing deforestation if inhabitants can monitor the area titled.","PeriodicalId":101533,"journal":{"name":"ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114586531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Too Good to Be True? How Time-Inconsistent Renewable Energy Policies Can Deter Investments 好得令人难以置信?时间不一致的可再生能源政策如何阻碍投资
Nils May, Chiapinelli Olga
{"title":"Too Good to Be True? How Time-Inconsistent Renewable Energy Policies Can Deter Investments","authors":"Nils May, Chiapinelli Olga","doi":"10.2139/ssrn.3146774","DOIUrl":"https://doi.org/10.2139/ssrn.3146774","url":null,"abstract":"The transition towards low-carbon economies requires massive investments into renewable energies, which are commonly supported through regulatory frameworks. Yet, governments can have incentives - and the ability - to deviate from previously-announced support once those investments have been made, which can deter investments. We analyze a renewable energy regulation game, apply a model of time-inconsistency to renewable energy policy and derive under what conditions governments have incentives to deviate from their commitments. We analyze the effects of various support policies and deployment targets and explain why Spain conducted retrospective changes in the period 2010-2013 whereas Germany stuck to its commitments.","PeriodicalId":101533,"journal":{"name":"ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130777057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Plan de Seguridad del Agua (PSA) del acueducto del municipio de Tocaima (Water Safety Plan (WSP) for the Water Supply System of the Town of Tocaima) 《托凯马市供水系统的水安全计划》(WSP)
José Luis Díaz Arévalo, Andrés Felipe Martínez Urrego, Ángela María Jaramillo Londoño
{"title":"Plan de Seguridad del Agua (PSA) del acueducto del municipio de Tocaima (Water Safety Plan (WSP) for the Water Supply System of the Town of Tocaima)","authors":"José Luis Díaz Arévalo, Andrés Felipe Martínez Urrego, Ángela María Jaramillo Londoño","doi":"10.2139/ssrn.3113701","DOIUrl":"https://doi.org/10.2139/ssrn.3113701","url":null,"abstract":"<b>Spanish Abstract:</b> Tal como lo establece la Organización Mundial de la Salud OMS, la forma más eficaz de garantizar sistemáticamente la seguridad de un sistema de abastecimiento de agua de consumo es aplicando un planteamiento integral de evaluación de los riesgos y gestión de los riesgos que abarque todas las etapas del sistema de abastecimiento, desde la cuenca de captación hasta su distribución al consumidor. Los objetivos principales de un Plan de Seguridad del Agua (PSA) son: la minimización de la contaminación de las fuentes de agua, la reducción o eliminación de la contaminación a través de procesos de tratamiento adecuados, y la prevención de la contaminación durante el procesamiento, distribución y almacenamiento. En este sentido, se presenta el diseño del Plan de Seguridad del Agua (PSA) para el sistema de abastecimiento de agua potable del municipio de Tocaima, ubicado en el departamento de Cundinamarca. El PSA para la empresa INGEAGUA S.A.S. E.S.P., se evalúa con criterios puntuales basados en el Manual para el Desarrollo de Planes de Seguridad del Agua de la Organización Mundial de la Salud; después de dicho estudio se presentan las medidas de control a tomar ante los riesgos y peligros encontrados y posteriormente se define cómo podría reaccionar al implementar tales medidas. En el análisis efectuado se identificaron riesgos significativos hacia la calidad, cantidad y continuidad en el servicio. En primer lugar, la fuente de abastecimiento está afectada por actividad agrícola y vertimientos de aguas residuales. La captación está ubicada en una zona de fácil acceso a turistas y la rejilla no cumple con su función, pues en las épocas más secas, el caudal es mínimo y la captación se hace por debajo del mínimo necesario. En cuanto a tratamiento la planta está diseñada para trabajar con tres floculadores mecánicos de paleta pero sólo uno de ellos funciona correctamente; otro está fuera de servicio y el tercero fue retirado. La desinfección no se realiza correctamente pues el cloro ingresa directamente al tanque sin pasar por un proceso de mezcla que garantice que el porcentaje de cloro residual es el indicado. La metodología empleada es la propuesta por la Organización Mundial de la Salud (OMS), la cual entrega una serie de parámetros a seguir a la hora de elaborar y ejecutar un plan de seguridad del agua (PSA). Está compuesto de 5 fases de preparación, evaluación del sistema, monitoreo operativo, gestión y comunicación, retroalimentación y mejora del sistema, que a su vez, están divididos en 11 módulos. Aún se cuenta con escasa aplicación de la metodología en el país. <b>English Abstract:</b> As established by the World Health Organization WHO, the most effective way to systematically ensure the safety of a drinking water supply system is to apply a comprehensive approach to risk assessment and risk management covering all stages of the supply system, from catchment basin to distribution to the consumer. The main objectives of a W","PeriodicalId":101533,"journal":{"name":"ERN: Exploitation of Renewable & Non-Renewables Natural Resources & the Environment (Topic)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131237258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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