Motivational signage increases stair usage on a Hispanic serving institution

Abstract

Objective: Stair climbing is considered a good physical activity. Motivational signage has been successful in promoting stair usage in various settings. This study was to investigate the effects of motivational signage on stair usage in a Hispanic serving institution. Participants: A total of 31,067 pedestrians were observed from February to March 2013. Methods: Stair usage was monitored for 9?h per day each week at phase 1 (baseline), 2 (intervention), and 3 (post-intervention). Results: Overall, participants’ stair usage was higher during phase 2 (49.0%) and phase 3 (48.0%), compared with phase 1 (39.7%). The participants during phase 2 and 3 were more likely to use the stairs compared to participants during phase 1, regardless of floor level (3-story or 4-story building), status (student or staff/faculty), and time of day (7:30–10:29, 10:30–13:29, or 13:30–16:30) (p?<?.001). Conclusion: Motivational signage can effectively encourage more stair usage, and hence promote healthy behavior in a predominantly Hispanic-serving institution.     

Neighborhood Effects on Racial–Ethnic Identity: The Undermining Role of Segregation

African American and Latino youth experience stereotypes about their group’s academic ability but youth high in three components of racial–ethnic identity Connectedness, Awareness of Racism, and Embedded Achievement are buffered from these stereotypes and are more likely to attain good grades in school, feel efficacious, and engaged with academics. In the current study, the effect of neighborhood segregation on these components of racial–ethnic identity was examined. Segregation impairs racial–ethnic identity Connectedness, Awareness of Racism, and Embedded Achievement among African American and Latino youth. Eighth graders (n = 206 African American, n = 131 Latino) living in 100 census tracks filled out racial–ethnic identity scales. A multilevel model demonstrates that segregation is associated with lower scores on each of the components of racial–ethnic identity.

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Bayesian analysis of panel data using an MTAR model

Bayesian analysis of panel data using a class of momentum threshold autoregressive (MTAR) models is considered. Posterior estimation of parameters of the MTAR models is done by using a simple Markov Chain Monte Carlo (MCMC) algorithm. Selection of appropriate differenced variables, test for asymmetry and unit roots are recast as model selections and a simple way of computing posterior probabilities of the candidate models is proposed. The proposed method is applied to the yearly unemployment rates of 51 US states and the results show strong evidence of stationarity and asymmetry.     

Double unit root tests for cross-sectionally dependent panel data

This paper proposes various double unit root tests for cross-sectionally dependent panel data. The cross-sectional correlation is handled by the projection method [P.C.B. Phillips and D. Sul, Dynamic panel estimation and homogeneity testing under cross section dependence, Econom. J. 6 (2003), pp. 217–259; H.R. Moon and B. Perron, Testing for a unit root in panels with dynamic factors, J. Econom. 122 (2004), pp. 81–126] or the subtraction method [J. Bai and S. Ng, A PANIC attack on unit roots and cointegration, Econometrica 72 (2004), pp. 1127–1177]. Pooling or averaging is applied to combine results from different panel units. Also, to estimate autoregressive parameters the ordinary least squares estimation [D.P. Hasza and W.A. Fuller, Estimation for autoregressive processes with unit roots, Ann. Stat. 7 (1979), pp. 1106–1120] or the symmetric estimation [D.L. Sen and D.A. Dickey, Symmetric test for second differencing in univariate time series, J. Bus. Econ. Stat. 5 (1987), pp. 463–473] are used, and to adjust mean functions the ordinary mean adjustment or the recursive mean adjustment are used. Combinations of different methods in defactoring to eliminate the cross-sectional dependency, integrating results from panel units, estimating the parameters, and adjusting mean functions yields various available tests for double unit roots in panel data. Simple asymptotic distributions of the proposed test statistics are derived, which can be used to find critical values of the test statistics.

We perform a Monte Carlo experiment to compare the performance of these tests and to suggest optimal tests for a given panel data. Application of the proposed tests to a real data, the yearly export panel data sets of several Latin–American countries for the past 50 years, illustrates the usefulness of the proposed tests for panel data, in that they reveal stronger evidence of double unit roots than the componentwise double unit root tests of Hasza and Fuller [Estimation for autoregressive processes with unit roots, Ann. Stat. 7 (1979), pp. 1106–1120] or Sen and Dickey [Symmetric test for second differencing in univariate time series, J. Bus. Econ. Stat. 5 (1987), pp. 463–473].     

Supplier Encroachment and Investment Spillovers

It is conventional wisdom that a manufacturer's encroachment into retail space will likely hurt an existing retailer. In contrast to this conventional belief, current research indicates that a retailer may welcome a manufacturer's encroachment despite the new competition in the final market. The encroachment may help the manufacturer have some “skin in the game” at the retail level, which will cause the manufacturer to make a selfish cost‐reducing investment that spills over to the retailer as a lower wholesale price. Such a spillover effect enhances the retailer's profit as long as the encroachment does not result in extreme retail competition by a certain degree of product differentiation, and ultimately generates Pareto gains in the supply chain. The spillover effect is so robust that the retailer's benefit from the encroachment remains even after considering potential mitigating factors such as selling costs, a nonlinear form of cost reduction, decentralized encroachment, additional retail competition, price competition, and a negotiation between the manufacturer and the retailer.     

Does a Supplier's Operational Competence Translate into Financial Performance? An Empirical Analysis of Supplier–Customer Relationships

We conduct an empirical investigation of how a supplier's operational competence, as reflected by outcomes in the areas of quality, cost, delivery, flexibility, and new product development, translates into financial gains from a key customer. In contrast to previous research directed at the firm level, this study focuses on the supplier–customer relationship level. Using survey data from 158 suppliers in the manufacturing industry, we perform structural equation modeling to map out the paths from operational competence to financial performance—via dependencies and cooperative behaviors between suppliers and their customers. This study is the first scholarly attempt to examine the link between suppliers’ operational competencies and financial performance in interorganizational relationships. It is also an early investigation into operational competence as a source of bi‐lateral dependence. Our findings show that the supplier's operational competences increase its customer's dependence by enhancing the value of its products/services. However, the resulting increase in the supplier's power is not leveraged to shape relationship behaviors or capture value from its customer. In contrast, the customer's existing power as a major buyer plays an important role in shaping cooperative behaviors and affecting the supplier's financial performance from the customer relationship.     

A Case Study of Low Collective Efficacy and Lack of Collective Community Action

A mixed-method case study was used to investigate why members of a community do not take collective action to protect their well-being from detrimental neighboring industrial businesses. A hierarchical regression analysis from a self-administered survey (n = 95) shows that low collective efficacy is the main factor contributing to the lack of collective action among the residents (Adjusted R² = .155, df = 1, F = 15.355, p < .001). Data from an informal participant observation and an archived documents review suggest that limited learned helplessness may have evolved in the community and lowered collective efficacy among its residents.     

A missing link: psychological ownership as a mediator between transformational leadership and organizational citizenship behaviour

Interest in psychological ownership (PO) has increased due to its influence on employees’ attitudes and behaviours. This study focuses on PO as a mediator between transformational leadership (TL) and organizational citizenship behaviour (OCB) in the Korean public sector, which does not have employee stock ownership plans (ESOPs). With a total of 214 cases from the Korean public sector, structural equation modelling (SEM) analysis was conducted, and chi-square difference-based model comparison was performed to examine the mediating effect. Results indicated statistically significant relationships between TL and employees’ PO and between employees’ PO and their OCB. A statistically significant full mediating role of PO between TL and OCB in the Korean public sector context was found.     

Landscape of human resource development research in Korea: results from author co-citation network analysis

The present study examined major trends and issues of Human Resource Development (HRD) research in Korean context applying the author co-citation analysis (ACA) to three primary HRD-related journals in South Korea. Following the analyses of author co-citation frequency, correlation matrix, dendrogram, and the multi-dimensional scaling (MDS) map, the results were found as follows: (1) co-citation network identified seven topical clusters (i.e., human competency improvement for young men and e-learning designers, system approach for training effectiveness, competency for executives and HRD-ers, HRD evaluations, HRD solutions, mentoring in career development, leadership, and the role of professionals), (2) competency appeared as a keyword in multiple clusters, (3) unlike HRD in North America or Europe, learning (informal, organizational, self-directed, and lifelong learning) with a variety of HRD solutions comprised the dominant research stream, and (4) research activities for critical issues, such as diversity, development of workforce minority, and international HRD were largely missing.