Gestão de riscos na cadeia de suprimentos e valoração do custo da escassez de energia elétrica: Modelos e uma proposta de implementação para o Brasil

Este trabalho apresenta as principais aplicações de técnicas de gestão de riscos ao estudo de interrupções em cadeias de fornecimento, tendo como motivação o caso do fornecimento de energia elétrica, assunto de extrema relevância para o Brasil. Neste sentido, o cálculo do “custo do déficit” ou perda de produção dada uma falha no fornecimento de energia elétrica (parâmetro utilizado em todo o planejamento do setor elétrico brasileiro), foi escolhido como fator relevante a ser analisado. As principais metodologias existentes para a apuração desse parâmetro são apresentadas fazendo uma comparação com aquela atualmente em uso no Brasil. Adicionalmente, apresentamos uma proposta de implementação para as metodologias alternativas, utilizadas no exterior, e baseadas no conceito de VOLL (“Value of Lost Load”) - medida do valor da escassez de energia para empresas ou consumidores individuais e fundamental para o desenho de programas de gerenciamento de demanda.

Demand and supply: price elasticities and corporate performance in the UK

This paper investigates the relationship between consumer demand and corporate performance in several consumer industries in the UK, using two independent datasets. It uses data on consumer expenditures and the retail price index to estimate Almost Ideal Demand Systems on micro-data and compute timevarying price elasticities of demand for disaggregated commodity groups. Then, it matches the product definitions to the Standard Industry Classification and uses the estimated elasticities to investigate the impact of consumer behaviour on firm-level profitability equations. The time-varying household characteristics are ideal instruments for the demand effects in the firms' supply equation. The paper concludes that demand elasticities have a significant and tangible impact on the profitability of UK firms and that this impact can shed some light on the relationship between market structure and economic performance.

Conditional labour supply, quantile functions in Brazil

The estimation of labor supply elasticities has been an important issue m the economic literature. Yet all works have estimated conditional mean labor supply functions only. The objective of this paper is to obtain more information on labor supply, by estimating the conditional quantile labor supply function. vI/e use a sample of prime age urban males employees in Brazil. Two stage estimators are used as the net wage and virtual income are found to be endogenous to the model. Contrary to previous works using conditional mean estimators, it is found that labor supply elasticities vary significantly and asymmetrically across hours of work. vVhile the income and wage elasticities at the standard work week are zero, for those working longer hours the elasticities are negative.

Labor supply, risk aversion and economic refrom in China

Economic reform in China has created a small, but fast-growing private sector that has spurred rapid productivity growth. Growth of the private sector is predicated upon continued labor movements away from state-run industries and into private firms. This paper presents a theory of labor market sectoral choice demonstrating that three factors determine private sector labor supply-the difference in wages between the state and private sectors, private sector wage risk and risk aversion. Estimation of the model using survey data provides strong support for the theory. We find that the riskiness of private sector earnings has a greater effect in discouraging workers from taking jobs in private firms than the wage premi um has in attracting workers.

Endogenous supply of fiat money

We address whether reputation concerns can discipline the behavior of a self-interested agent who has a monopoly over the provision of fiat money. We obtain that when this agent can commit to a plan of action, there is a monetary equilibrium where it never overissues. We show, however, that such equilibrium is no longer possible when there is no commitment. This happens because the incentives this agent has to maintain a reputation for providing valuable currency disappear once its reputation is high enough. More generally, we prove that there is no monetary equilibrium where overissue happens only infrequently. We conclude by showing that imperfect memory can restore the positive result obtained in the presence of commitment.

Motivation of german entrepreneurs to seek equity via crowdfunding: an exploratory study

Equity crowdfunding, ou financiamento de um projeto ou empreendimento através de diversos pequenos investimentos ou um grande grupo de investidores, tem recebido uma crescente atenção da mídia e acadêmicos. A discussão questiona se crowdfunding pode de uma forma geral transformar a maneira como as pessoas captam capital para os seus negócios. Enquanto que pesquisas tem até então focado em explorar porque crowdinvestors têm motivação em financiar empreitadas, este estudo foca em revelar o que motiva empreendedores a procurar soluções de crowdfund. Para isso, o estudo investigou a motivação de 11 empreendedores que usaram plataformas alemãs de crowdfunding. Como estudos existentes sobre a motivação de empreendedores são na sua grande maioria superficiais, este estudo utiliza uma nova abordagem de pesquisa na área de financiamento de projetos, a abordagem de means-end. Sob essa abordagem a forma de pensar dos empreendedores em relação ao uso de equity crowdfunding foi estudada de forma holística, revelando todo o processo de raciocínio até a decisão final de optar por uma estratégia de crowdfunding. Uma das descobertas é que empreendedores usam equity crowdfunding para arrecadar fundos de crowdinvestors consideravelmente não-racionais (emocionais) para financiar o crescimento futuro de seus negócios e também sinalizar viabilidade de investimento para futuros investidores. Além disso, empreendedores esperam que crowdinvestors sejam engajados e ajudem tanto a promover o negócio como a dar feedback. Crowdfunding também possibilita que empreendedores mantenham o poder de decisão sobre a empresa mais facilmente se comparado a outras fontes tradicionais de financiamento. As descobertas indicam que crowdfunding atrai empreendedores que não conseguiriam arrecadar investimentos a partir de outras fontes de capital assim como empreendedores que entendem os benefícios adicionais que esta oferece em relação à outras fontes.

Supply chain turbulence: the impact of a mid-range event in multi-tier, multi-dimension supply chains

Nota: A autora agradece à Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) pela concessão de bolsa de estudos para o desenvolvimento deste projeto de pesquisa.

Logística e supply chain management: parte I

Professor e aluno da GV, professora convidada e profissional de mercado falam de logística e supply chain management

Logística e supply chain management: parte II

Professor e aluno da GV, professora convidada e profissional de mercado falam de logística e supply chain management

The Culture of entrepreneurship: a study of the entrepreneurial motivation and attitudes towards business creation in the UAE in comparison to the US and Brazil

This study demonstrates the cultural dimension and the surrounding environment of different entrepreneurs selected from three countries, the United States of America, the Federative Republic of Brazil, and the United Arab Emirates. The general objective is to understand the difference in the entrepreneurial motives and spirit towards venture creation from the three different countries. After conducting field research and collecting the required data, a deep analysis was conducted to draw a comparison between the three cultures from an individual’s point of view, to help shape a set of proposed recommendations, which could be used to improve the current culture of entrepreneurship in the UAE.

The impact of negative social environmental events on the market value of supply chain partners

The present work analyzes the impact of negative social / environmental events on the market value of supply chain partners. The study offers a contextualized discussion around important concepts which are largely employed on the Operations Management and Management literature in general. Among them, the developments of the literature around supply chains, supply chain management, corporate social responsibility, sustainable development and sustainable supply chain management are particularly addressed, beyond the links they share with competitive advantage. As for the theoretical bases, the study rests on the Stakeholder Theory, on the discussion of the efficient-market hypothesis and on the discussion of the adjustment of stock prices to new information. In face of such literature review negative social / environmental events are then hypothesized as causing negative impact in the market value of supply chain partners. Through the documental analysis of publicly available information around 15 different cases (i.e. 15 events), 82 supply chain partners were identified. Event studies for seven different event windows were conducted on the variation of the stock price of each supply chain partner, valuing the market reaction to the stock price of a firm due to triggering events occurred in another. The results show that, in general, the market value of supply chain partners was not penalized in response to such announcements. In that sense, the hypothesis derived from the literature review is not confirmed. Beyond that, the study also provides a critical description of the 15 cases, identifying the companies that have originated such events and their supply chain partners involved.

Business process in supply chain integration in sugar and ethanol industry

This article presents the application of a diagnosis method in a Brazilian company from the sugar and ethanol industry to identify the level of supply chain integration. The diagnosis method is based on Cooper, Lambert and Pagh reference model for SCM. The method involves nine referential axes established from the eighth key business processes of the reference model.

Profissionais de logística e supply chain no Brasil: 2ª fase

Essa pesquisa corresponde à segunda fase de um processo iniciado em 2012, cujo objetivo é obter informações sobre o conjunto de competências (skills) necessárias aos profissionais no mercado de operações logísticas e gestão da cadeia de abastecimento, bem como identificar as faltas de competências existentes, na opinião das empresas. A pesquisa foi realizada através de um questionário dirigido às empresas, as quais informaram as competências gerenciais e operacionais necessárias, os níveis reais de competência dos profissionais atualmente contratados, e as competências faltantes