Risk decomposition,estimation error,and naïve diversification

How to achieve adequate diversification is important in portfolio construction. Efficient markets should not reward an investor for taking on risk that can be diversified away. Hence, when minimizing risk exposure, investors need to measure what part of total portfolio risk is systematic and what part can be diversified away. I examine several methods for decomposing total portfolio risk into systematic and diversifiable components and then carry out simulations to compare cross-sectional distributions of estimated and true risk as number of stocks increases in portfolios constructed using naïve diversification. Ordinary least squares estimators of diversifiable risk are relatively robust, and their cross-sectional distributions closely track the cross-sectional distributions of the corresponding true diversifiable risk. Other proposed estimators of diversifiable risk as well as all estimators of systematic risk have cross-sectional dispersion much greater than the corresponding true risk although, with one exception, bias is small. Results are relatively robust to the choice of method for generating market returns and to the underlying asset pricing model but not to random security betas. The simulation analysis also shows that risk and magnitude of shocks due to diversifiable risk are not negligible, even for 300-stock portfolios.     

The trouble with naïve Keynesianism

Since the Keynesian Revolution of the 1930s, many prominent economists have argued that a useful policy response to economic depression is to boost government spending. But pressure to spend quickly increases the potential for waste and inefficiency: this is ignored or dismissed in the Keynesian literature. For example, a widely cited cost–benefit analysis of stimulus spending does not even acknowledge the possibility of waste, and some Keynesians go so far as to argue that wasteful spending during a crisis can nonetheless be desirable. Here we extend the typical analysis by accounting explicitly for the leading sources of cost including waste, resource costs, and the excess burden of taxation. Our results suggest that stimulus spending that is largely wasteful is unlikely to generate net wealth. A proper response to economic depression must consider the possibility that government waste can render stimulus spending counterproductive.     

Feature weighted naïve Bayes algorithm for information retrieval of enterprise systems

Automated information retrieval is critical for enterprise information systems to acquire knowledge from the vast amount of data sets. One challenge in information retrieval is text classification. Current practices rely heavily on the classical naïve Bayes algorithm due to its simplicity and robustness. However, results from this algorithm are not always satisfactory. In this article, the limitations of the naïve Bayes algorithm are discussed, and it is found that the assumption on the independence of terms is the main reason for an unsatisfactory classification in many real-world applications. To overcome the limitations, the dependent factors are considered by integrating a term frequency–inverse document frequency (TF-IDF) weighting algorithm in the naïve Bayes classification. Moreover, the TF-IDF algorithm itself is improved so that both frequencies and distribution information are taken into consideration. To illustrate the effectiveness of the proposed method, two simulation experiments were conducted, and the comparisons with other classification methods have shown that the proposed method has outperformed other existing algorithms in terms of precision and index recall rate.     

What Are the Lessons from Post‐Communist Transitions?

This paper provides a review of the literature on post‐communist transitions. It outlines the debate between the proponents of rapid reforms and the advocates of neo‐institutionalism. Providing evidence from the transitional countries, it suggests an alternative approach, explicitly acknowledging the impact of two categories of constraints on reforms.     

Labour solidarity in crisis? Lessons from General Motors

Why was the 2008–09 economic downturn not matched by an internationally coordinated trade union response? Drawing on the evidence from General Motors, this article argues that this was due to states' extraordinary involvement in the economy during the crisis, which provided strategic alternatives to labour transnationalism at the national level.     

The scope of “marketing” research in the nonprofit sector: Lessons from the last 20 years literature

Over the last several decades, the field of nonprofit marketing has produced a growing number of publications; however, little attention has been paid to examine what research topics have been studied by nonprofit scholars from the marketing perspectives. This knowledge production research contributes to the literature by reviewing trends in research themes and methodologies over the last 20 years among the articles for which authors use the terminology “marketing.” Employing a thematic review using text network analysis, and an in-depth methodology review, this study finds that nonprofit marketing studies have been shifting to become more subdivided and diversified in terms of research themes and methodologies. However, we also find that there is still room for further development, which we provided recommendations based on the findings. With its findings, this paper provides critical guidance for future studies.     

Do short selling restrictions destabilize stock markets? Lessons from Taiwan

Short sellers have been routinely blamed for triggering, or exacerbating, stock market declines. The experience of Taiwan provides an interesting case study of the impact of short selling bans on stock returns volatility in a time series framework due to the length of time the short selling ban was in place there. Estimating several variants of an asymmetric GARCH model and a Markov switching GARCH model we find robust evidence that short selling restrictions raise stock returns volatility. The only qualifier is that the impact of short sale bans is a feature of the expansionary phase of business cycles. During recessions this effect dissipates.     

When to haggle,when to hold firm? Lessons from the used‐car retail market

Though haggling has been the conventional way for auto retailers to sell cars, the last two decades have witnessed the systematic adoption of no‐haggle prices by many large dealerships, including the largest new‐ and used‐car dealership chains. This paper develops a structural empirical model to estimate sellers' profits under posted price and haggling, and investigates how market conditions affect sellers' optimal pricing formats. The model incorporates a simple class of bargaining mechanisms into a standard random‐coefficient discrete‐choice model. With the extension, the product‐level demand system is estimated using data with only list prices, and the unobserved price discounts are also recovered in the estimation. The counterfactual experiments yield a few interesting findings. First, dealers' adopted pricing formats seem superior to the alternative ones. Second, dealers enjoying larger market power through vertical differentiation and carrying a large number of models are more likely to have posted price as their optimal pricing format.     

Lessons from management–union partnership in teacher performance appraisal in the New South Wales public education system

Performance appraisal is frequently seen as one of the hallmarks of the ‘new managerialism’ in public sector human resource management. It is also commonly represented as a device for individualizing the employment relationship. Yet even appraisal offers scope for employee voice/participation, both individually and collectively, and for varying degrees of management–union cooperation. This study examines an unlikely case of management–union partnership in performance appraisal – that applied since 2000 to teachers in Australia's largest public schooling bureaucracy, the NSW Department of Education and Training, whose teachers have a long history of union solidarity and industrial militancy. The experiment can be seen as a union retreat from confrontationism, a concession to managerialism, and a resignation to the dominance of individualism over collectivism. However, we argue that it has also widened the scope for both union and employee voice at workplace level.     

Let’s Not Go Down that Path Again: Lessons from the Past Applied to Immigrant-Targeted Discrimination

Immigrants, both legal and illegal, are a staple of the modern United States workplace. While much of the discussion of this fact centers on negative consequences for the U.S., far less attention has been paid to the detrimental impact on immigrants resulting from their workplace experiences, particularly relating to being targets of discrimination. In this article, we outline: a) a variety of types of workplace discrimination potentially relating to immigrant status; b) potential negative outcomes arising from said discrimination for both immigrant employees and their employers, and; c) how existing and predicted employment law standards place organizations in a legally vulnerable position when such discrimination goes unchecked. We further discuss implications of immigrant-targeted discrimination (ITD) for organizations and managers, and plausible extensions of workplace discrimination laws to specifically include ITD.     

Does VC fund diversification pay off? An empirical investigation of the effects of VC portfolio diversification on fund performance

The paper tests different theories of how diversification by Venture Capital (VC) firms affects fund performance. The Financial Intermediation and the Resource-based Theory suggest that lower financial risk associated with diversification implies a lower return. However, the assumptions of these theories are questionable in the context of venture capital. We test their validity using data on VC portfolio diversification by industry and country using an original dataset of 649 VC funds originating in the United Kingdom over the period 1981–2000. Results show that higher diversification by industry does indeed lower VC fund success rates. Diversification by geographical region, on the contrary, increases returns.     

How do firms perceive policy rationales behind the variety of instruments supporting collaborative R&D? Lessons from the European Framework Programs

The main objective of the paper is to analyze to which extent participation in public programs supporting collaborative R&D meets the goals pursued by policy makers when setting up such instruments. Theoretically, these policy instruments are designed to overcome a set of failures (market and systemic failures) impeding the innovation process. We use as an example in the empirical part the European Framework Programs (FP) 5 and 6, which include a large and representative range of instruments. Each of these FP instruments is characterized according to the set of failures it is supposed to solve, its objectives and characteristics, and we discuss how these aspects are perceived and exploited by participating companies. Using data collected in the Innoimpact survey, involving thousands of FP5 and FP6 project participants, we compare the motivations of firms in choosing these instruments with our theoretical predictions. We find that the motivation to participate in a FP project does not differ greatly from one instrument to the other and the characteristics of the projects do not exhibit major differences. The paper concludes with some policy recommendations.     

What do we know about business strategy and environmental research? Insights from Business Strategy and the Environment

Business Strategy and the Environment (BSE) is a premier journal dedicated to interdisciplinary research that advances business practice leading to improvements in environmental performance. Using big data analytics, this review examines the intellectual structure and the drivers of research impact of BSE in the scholarly domain. The bibliometric results suggest three major findings. First, the top three countries contributing to BSE are the United Kingdom, the United States, and China. Second, BSE's research manifests through five thematic clusters, namely, business strategy and sustainability; corporate governance and sustainability reporting; green marketing and pro-environmental behavior; innovation and environmental policy; and environmental management systems. Finally, BSE's research impact in terms of citations is significantly influenced by author affiliation (United States); article age (older), appearance (lead article and special issue), length (longer), and method (mix methods); title length (shorter title); and number of keywords (more keywords) and references (more references). Implications for BSE's readers and future contributors are discussed.     

Lessons from Sweden’s first large-scale implementation of Six Sigma in healthcare

The Skaraborg Hospital Group (SkaS) has implemented a variety of quality management initiatives in the last 20 years in accordance with its strategy of excelling at quality development to fulfill the needs and expectations of its patients. One such initiative is Six Sigma, which has contributed to more than 40 completed improvement projects. Using an action research approach, this article describes the lessons that were learned from the first 22 Six Sigma projects, completed between 2006 and 2008 and having a success rate of 75%. We further describe how these insights have contributed to other ongoing quality improvement activities at SkaS. In particular, the paper presents some key points not earlier described in other Six Sigma healthcare applications.     

What drives the banks' diversification decision? A dynamic nonlinear panel data approach

This paper empirically determines the drivers of functional diversification decision for 365 banks set in selected Middle East and North Africa (MENA) countries over 1988–2015. For this purpose, we use a dynamic nonlinear panel data model. Our findings reveal that both market share and financial intermediation stratify the diversification decision for the whole MENA sample. Splitting the sample shows that the risk‐adjusted profitability and the loan loss provision ratio exert a major influence over the diversification indicator for Gulf Cooperation Council (GCC) banks, whereas the net interest margin ratio, the bank market share, and financial intermediation are the major drivers of the strategic decision for the remaining non‐GCC banks.     

Can training increase the confidence of staff and volunteers in a sector with inexperienced fundraisers? Lessons learnt from the “giving to heritage” programme

The UK independent heritage sector has traditionally not been strong at fundraising. There is a perception amongst the general public that most heritage assets are supported by funds from the state, and that sectors such as children and health are more worthy of support. At a time when pressures on central and local government budgets are increasing, the need for heritage to look for sources of private funds has never been greater, yet the level of confidence and skills to achieve this goal are relatively low. A fundraising training programme tailored to the sector was delivered between 2014 and 2017 by The Heritage Alliance in partnership with the Institute of Fundraising and supported by the Heritage Lottery Fund. This paper analyses the results and explores what worked and what did not work in the programme. An emphasis on face-to-face training in small workshops, backed up with other training techniques, together with online resources, resulted in higher levels of fundraising skills amongst heritage fundraisers and a surprisingly high levels of actual funds raised attributable to the training programme.     

Fleet management policies for humanitarian organizations: Beyond the utilization–residual value trade-off

Four-wheel drive vehicles play a pivotal role in securing the last-mile distribution of goods and services in humanitarian development programs. To optimize the use of their fleets, humanitarian organizations recommend policies aimed at enhancing the utilization of vehicles while preserving residual value. Although these decisions have a significant impact on cost, there is limited empirical evidence to show that the recommended policies are actually implemented and that they produce the expected benefits. This paper theoretically and empirically examines the complex and inter-related effects of vehicle-to-mission allocation decisions and of alternative vehicle usage patterns on vehicle utilization and residual value in humanitarian development programs. The results suggest that humanitarian organizations could break the utilization–residual value trade-off by adopting different policies than the ones currently in place. They also reveal that organizations need to realize that what seems logical from the headquarters' perspective may be illogical or inconvenient for the field, and as a result, the field may do the opposite of what is recommended or even instructed. Therefore, they either need better data and analysis combined with audits or they need to improve mechanisms that incentivize field delegations to follow standards recommended by the headquarters.