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Analysis of the Bovespa Futures and Spot Indexes With High Frequency Data

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Chinese Business Review 2015年第4期14卷 192-200页

作者： Edimilson Costa Lucas Danilo Braun Santos Bruno Nunes Medeiro Vinicius Augusto Brunassi Silva Luiz Carlos Monteiro eaesp-fgv Sao Paulo Brazil Universidad Nacional de Misiones Misiones Argentina

Data from the World Federation of Exchanges show that Brazil＇s Sao Paulo stock exchange is one of the largest worldwide in terms of market value. Thus, the objective of this study is to obtain univariate and bivariate forecasting models based on intraday data from the futures and spot markets of the BOVESPA index. The interest is to verify if there exist arbitrage opportunities in Brazilian financial market. To this end, three econometric forecasting models were built： ARFIMA, vector autoregressive （VAR）, and vector error correction （VEC）. Furthermore, it presents the results of a Granger causality test for the aforementioned series. This type of study shows that it is important to identify arbitrage opportunities in financial markets and, in particular, in the application of these models on data of this nature. In terms of the forecasts made with these models, VEC showed better results. The causality test shows that futures BOVESPA index Granger causes spot BOVESPA index. This result may indicate arbitrage opportunities in Brazil.

关键词： econometric models arbitration stock exchange vector autoregressive (VAR) vector error correction (VEC) Granger causality

Bitcoin pricing: impact of attractiveness variables

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Financial Innovation 2020年第1期6卷 373-391页

作者： Rodrigo Hakim das Neves Sao Paulo School Of Economics(fgv) Sao PauloBrazil

The research seeks to contribute to Bitcoin pricing analysis based on the dynamics between variables of attractiveness and the value of the digital *** the error correction model,the relationship between the price of the virtual currency,Bitcoin,and the number of Google searches that used the terms bitcoin,bitcoin crash and crisis between December 2012 and February 2018 is *** study also applied the same analysis to prices of Bitcoin denominated in different sovereign currencies traded during the same *** Johansen(J Econ Dyn Control 12:231-254,1988)test demonstrates that the price and number of searches on Google for the first two terms are *** research indicates that there are strong short-term and long-term dynamics among attractiveness factors,suggesting that an increase in worldwide interest in Bitcoin is usually preceded by a price *** contrast,an increase in market mistrust over a collapse of the currency,as measured by the term bitcoin crash,is followed by a fall in *** world economic crisis events appear to have a strong impact on interest in the virtual *** study demonstrates that during a worldwide crisis Bitcoin becomes an alternative investment,increasing its *** on it,bitcoin may be used as a safe haven by the financial market and its intrinsic characteristics might help the investors and governments to find new mechanisms to deal with monetary transactions.

关键词： Bitcoin pricing Price variables Crisis

In Vitro Screening of Endophytic Trichoderma sp. Isolated from Oil Palm in fgv Plantation against Ganoderma boninense

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Advances in Microbiology 2022年第7期12卷 443-457页

作者： Elya Masya Mohd Fishal Ili Bazilah Abd Razak Nor Hidayah Bohari Muhammad Ashraf Arif Mohd Nasir Crop Protection and Biosolution Department FGV R & D Sdn Bhd Bandar Enstek Malaysia

The potential of several endophytic Trichoderma isolates, isolated from healthy oil palm roots was assessed against Ganoderma boninense (PER71), the causal agent of Basal Stem Rot (BSR) disease through in vitro screening. In the dual culture assay, all endophytic Trichoderma isolates were found to be capable of inhibiting the growth of PER71 mycelium, by causing more than 70% inhibition of the pathogen’s radial growth (PIRG). Trichoderma asperellum M103 has caused the highest inhibition at 93.14%. The volatile compound produced by M103 also suppressed 65% of the pathogen’s radial growth. On the other hand, T. harzianum, M108 was found to have the ability to produce non-volatile compounds that is toxic and it has effectively inhibited 98.18% of the growth of PER71. Collectively, T. asperellum M103 and T. harzianum M108 have the potential to inhibit the growth of G. boninense PER71. These isolates were shown to be viable options for the future management of G. boninense in the oil palm field.

关键词： Endophytic Trichoderma Ganoderma boninense In Vitro Oil Palm

发展型国家的行政能力建设:对智利和新加坡的比较研究

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国际行政科学评论（中文版） 2021年第2期87卷 11-30页

作者： M.沙姆斯·哈克何塞·A.庞皮姆·德·奥利维拉杜明鸣(译) 王秋蕾(审校) 新加坡国立大学政治学系巴西fgv(fgv eaesp和fgv EBAPE) 中国人事科学研究院不详

行政能力取决于国家的性质,行政系统是行政能力的组成部分。近年来,在东南亚和拉丁美洲又展开了关于公共行政在发展型国家中起到的作用的争论。对发展型国家的一个主要研究内容是其行政能力以及如何建设行政能力。由于历史、经济、政治... 详细信息

行政能力取决于国家的性质,行政系统是行政能力的组成部分。近年来,在东南亚和拉丁美洲又展开了关于公共行政在发展型国家中起到的作用的争论。对发展型国家的一个主要研究内容是其行政能力以及如何建设行政能力。由于历史、经济、政治和文化背景的不同,发展型国家的行政能力存在很大差异。本文比较了两个来自不同大洲的国家(新加坡和智利)的案例,讨论了发展型国家的形成,及其如何塑造行政系统和其提高行政能力的举措。本文还研究了这两个国家形成中的差异以及影响其行政能力的背景因素。文章最后做出总结,为进一步研究提供了一个分析框架,并提出了建立有效行政能力所需的政策。

关键词：行政能力智利背景差异发展型国家新加坡

Short-and long-term effects of architecture on the brain:Toward theoretical formalization

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Frontiers of Architectural Research 2019年第4期8卷 564-571页

作者： Andrea de Paiva Richard Jedon Institute for Educational Development Fundagao Getulio VargasFGVSao PauloBrazil Urban Plannins and Development Institute of the City of Pilsen PUsenCzech Republic

The physical environm ent affects people’s behavior and *** effects can be easily noticed through observation,whereas others require an in-depth study to be understood and *** many alterations can be positive,some can also negatively influence wellbeing,decision-m aking,and m ental and physical *** of these effects are not easily associated with physical ***,people may be unaware of the real triggers for changes in behavior,mood,and *** many studies have been performed on environmental psychology,detailed research to understand the im pacts of architecture on the brain using neuroscience is *** difficulties experienced by researchers in this field are on the isolation of each stimulus to understand its effects individually and m easurem ent of brain changes in people interacting with the environm ent because some brain scans,such as fMRI,require people to be inside the ***,the several ways a space can impact its users should be discussed to understand how architecture influences in dividuals and to help architects and urban planners in designing efficient and healthy *** study aims to describe and analyze the results of previous research works and propose a way of organizing them to facilitate further investigation on this field.

关键词： Brain Neuroarchitecture Neuroscience Behavior Short term Long term

From BRICS to CyberBRICS: New Cybersecurity Cooperation

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China Today 2019年第11期68卷 29-31页

作者： LUCA BELLI fgv Law School in Rio de Janeiro

CONCLUDING a very productive ministerial meeting held in Brasilia in August 2019,the BRICS Ministers for Communications have released an important joint declaration highlighting the strategic interest of BRICS partner... 详细信息

关键词： BRICS security strategic

Estimate of the rate of unreported COVID-19 cases during the first outbreak in Rio de Janeiro

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Infectious Disease Modelling 2022年第3期7卷 317-332页

作者： M.S.Aronna R.Guglielmi L.M.Moschen Escola de Matem-atica Aplicada-EMAp FGVRio de JaneiroRJBrazil Department of Applied Mathematics University of WaterlooWaterlooONCanada

In this work we fit an epidemiological model SEIAQR(Susceptible-Exposed-Infectious-Asymptomatic-Quarantined-Removed)to the data of the first COVID-19 outbreak in Rio de Janeiro,*** emphasis is given to the unreported rate,that is,the proportion of infected individuals that is not detected by the health *** evaluation of the parameters of the model is based on a combination of error-weighted least squares method and appropriate *** structural and practical identifiability is analyzed to support the feasibility and robustness of the parameters’*** use the Bootstrap method to quantify the uncertainty of the *** the outbreak of MarcheJuly 2020 in Rio de Janeiro,we estimate about 90%of unreported cases,with a 95%confidence interval(85%,93%).

关键词： COVID-19 model Parameter estimation Identifiability Least squares B-splines Bootstrap method

Water Scarcity and Violent Conflict in International Relations＇ How Process Tracing Contributes to Demystify this Alleged Causal Relationship The Rio Grande-Colorado Case

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International Relations and Diplomacy 2016年第2期4卷 125-138页

作者： Douglas de Castro The Sao Paulo School of Law-fgv Sao Paulo Brazil

In the last few decades, water scarcity and its implications to economic, social and political dimensions has become a hot topic, especially for research agendas that try to establish a causal relationship with violent conflicts. However, these agendas fail to deliver their promises in not providing empirical evidences to confirm theory. In this sense, the present paper provides a fresh look to water scarcity implications, presenting a theoretical framework and new causal mechanism based on complex interdependence theory applied to the physical reality in an international basin. As such, the inferred causal mechanism, its parts and causal direction is investigated applying process-tracing technique to the Rio Grande-Colorado River. The paper finds by tracing the causal mechanism evidences to confirm new theory and enough analytical power to test in other cases to increase confidence in theory to fulfill generalization requirement.

关键词： water scarcity violent conflict cooperation process tracing international basins

Difficult Moment, Promising Future

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China Today 2018年第8期67卷 16-17页

作者： EVANDRO MENEZES DE CARVALHO fgv UFF (Brazil) the Center for Brazil-China Studies

THE WTO is an international organization whose primary purpose is to open trade for the benefit of *** seeks to fulfill this objective through an institutional and legal framework that favors the seeking of negotiated solutions to serve diverse commercial interests of its member countries and,in case of non-compliance with WTO rules,provides a

关键词： WTO 国际组织经济开发成员国贸易系统商业