Index Models and Land Allocation Reconsidered

In contrast with previous index model land applications, this article shows that the land allocation problem is a portfolio model with two constraints, namely, investable funds and land. The two-constraint model implies a drastic reinterpretation of what previous studies have quantified as diversifiable and systematic risks in agricultural production. The article also argues that the constant marginal-rate-of-product-substitution (MRPS) technology implicit in financial portfolio models is unlikely to hold in a production context such as the land allocation problem, and that the index model must be modified accordingly. Farm-level data are used to illustrate and test the hypotheses advanced. Empirical results indicate that most of the risk for corn and soybeans is diversifiable, and that corn and soybeans are characterized by decreasing MRPS. The MRPS effect is found to be large from an economic standpoint and implies that crop diversification may be optimal, even for risk-neutral farmers.     

A theory of racial diversity, segregation, and productivity

Empirical evidence illustrates that diversity generates both economic costs and benefits. This paper develops a theoretical model that accounts for the positive and deleterious effects of heterogeneity. First, an expanded Solow Growth Model demonstrates that the direct effects of diversity can be positive or negative, and depend upon the size of fixed parameter values. Second, diversity also influences individuals' location decisions. Segregation (variation of diversity across regions) always reduces national output per worker, so if diversity induces integration, it indirectly augments productivity as well. Finally, political policies aimed at reducing interaction costs across groups may actually reduce aggregate output per worker by encouraging segregation.     

Credit Where Credit is Due: A Field Survey of the Interactive Effects of Credit Expectations and Leaders’ Credit Allocation on Employee Turnover

Today's human resource management community has a strong interest in the issue of how HR practice is implemented by managers and leaders in the workplace. In this article, we investigate how one specific practice, leaders’ public recognition of a job well done (i.e., credit allocation), impacts employee turnover. Based on expectancy violations, psychological contracts, and turnover research, we predicted that subordinates would be more likely to leave an organization if their leader took credit for their work, but only if the credit taking violated subordinates’ expectations. In a field survey of organizational employees, we found that the effects of credit taking on turnover were negated when subordinates’ expectations and leaders’ credit allocation behavior were aligned. However, when leaders’ credit behavior came as a surprise, participants responded negatively when expectations were not met and positively when expectations were exceeded. We discuss the implications of these results for both theory and practice. © 2014 Wiley Periodicals, Inc.     

U.S.–Japan and U.S.–China trade conflict: Export growth,reciprocity, and the international trading system

First Japan and more recently China have pursued export-oriented growth strategies. While other Asian countries have done likewise, Japan and China are of particular interest because their economies are so large and the size of the associated bilateral trade imbalances with the United States so conspicuous. In this paper we focus on U.S. efforts to restore the reciprocal GATT/WTO market-access bargain in the face of such large imbalances and the significant spillovers to the international trading system. The paper highlights similarities and differences in the two cases. We describe U.S. attempts to reduce the bilateral imbalances through targeted trade policies intended to slow growth of U.S. imports from these countries or increase growth of U.S. exports to them. We then examine how these trade policy responses, as well as U.S. efforts to address what were perceived as underlying causes of the imbalances, influenced the evolution of the international trading system. Finally, we compare the macroeconomic conditions associated with the bilateral trade imbalances and their implications for the conclusions of the two episodes.     

Product‐market strategy and the marketing capabilities of the firm: impact on market effectiveness and cash flow performance

We report on two studies (a single and a multi‐industry) that empirically investigate a nomological network of relationships between strategic business unit product‐market strategy (differentiation, cost‐focus, and product‐market scope), marketing capabilities (architectural and specialized capabilities, as well as their integration), and business unit performance (market effectiveness and subsequent one‐year objective cash flow), along with a series of controls. Addressing important lacunae in the resource‐based view our main research objective is to augment understanding of how critical firm‐level marketing capabilities enable the realization of strategy, thus, further advancing both the resource‐based view and more recent capabilities theorizing. Specifically, we test seven hypotheses and find strong evidence that both architectural and specialized marketing capabilities, and their integration, positively mediate the product‐market strategy and derived business unit performance relationship. In contrast to many extant studies, both survey and objectively measured data are combined, and because the secondary data collected contains both resource‐level (input) data and subsequent one‐year financial data, a higher level of confidence may be attributable to our findings. Copyright © 2009 John Wiley & Sons, Ltd.     

The effects of technological turbulence and breadth on supply chain technology acceptance and adoption

The current empirical study examines the intention to use and subsequent implementation of a supply chain technology. Specifically, the authors extend the technology acceptance model (TAM) to incorporate the state of the technology environment (technological turbulence) and the extent to which other supply chain technologies have already been adopted by the firm (technological breadth). A series of seemingly unrelated regressions (SUR) were used to analyze survey data from 195 respondents. The results show that in technologically turbulent environments, the relationships between the firm's perceived usefulness and ease of use and the firm's intention to use a supply chain technology are stronger. The study also finds that the relationship between the firm's intention to use a supply chain technology and the implementation of the technology is weaker in firms with greater technological breadth.     

Real-world comparison of all-cause hospitalizations,hospitalizations due to stroke and major bleeding,and costs for non-valvular atrial fibrillation patients prescribed oral anticoagulants in a US health plan

Aims: To compare the risk of all-cause hospitalization and hospitalizations due to stroke/systemic embolism (SE) and major bleeding, as well as associated healthcare costs for non-valvular atrial fibrillation (NVAF) patients initiating apixaban, dabigatran, rivaroxaban, or warfarin.

Materials and methods: NVAF patients initiating apixaban, dabigatran, rivaroxaban, or warfarin were selected from the OptumInsight Research Database from January 1, 2013–September 30, 2015. Propensity score matching (PSM) was performed between apixaban and each oral anticoagulant. Cox models were used to estimate the risk of stroke/SE and major bleeding. Generalized linear and 2-part models were used to compare healthcare costs.

Results: Of the 47,634 eligible patients, 8,328 warfarin-apixaban pairs, 3,557 dabigatran-apixaban pairs, and 8,440 rivaroxaban-apixaban pairs were matched. Compared to apixaban, warfarin patients were associated with a significantly higher risk of all-cause (hazard ratio [HR]?=?1.30; 95% confidence interval [CI]?=?1.21–1.40) as well as stroke/SE-related (HR?=?1.60; 95% CI?=?1.23–2.07) and major bleeding-related (HR?=?1.95; 95% CI?=?1.60–2.39) hospitalization; rivaroxaban patients were associated with a higher risk of all-cause (HR?=?1.15; 95% CI?=?1.07–1.24) and major bleeding-related hospitalization (HR?=?1.71; 95% CI?=?1.39–2.10); and dabigatran patients were associated with a higher risk of major bleeding hospitalization (HR?=?1.46, 95% CI?=?1.02–2.10). Warfarin patients had significantly higher major bleeding-related and total all-cause healthcare costs compared to apixaban patients. Rivaroxaban patients had significantly higher major bleeding-related costs compared to apixaban patients. No significant results were found for the remaining comparisons.

Limitations: No causal relationships can be concluded, and unobserved confounders may exist in this retrospective database analysis.

Conclusions: This study demonstrated a significantly higher risk of hospitalization (all-cause, stroke/SE, and major bleeding) associated with warfarin, a significantly higher risk of major bleeding hospitalization associated with dabigatran or rivaroxaban, and a significantly higher risk of all-cause hospitalization associated with rivaroxaban compared to apixaban. Lower major bleeding-related costs were observed for apixaban patients compared to warfarin and rivaroxaban patients.     

Seasonal Homes and the Local Property Tax: Evidence from New York State

This study examines the growth of seasonal (i.e., second or vacation) homes and their impact on local property tax rates using evidence from towns and villages in New York State between 1990 and 2000. We find that a greater concentration of seasonal homes in a municipality is associated with a lower effective property tax rate in towns, and a higher rate in small and rural villages. An alternative measure of tax burden, property taxes as a percentage of median household income, is not related to the presence of seasonal homes in towns but is positively related in small and rural villages. Our findings for towns contradict the findings of an earlier study by Fritz (1982 ) that found that an increase in town property allocated to vacation homes was significantly associated with an increasing property tax rate, although our findings for villages supports his findings.