Sustainable Tourism as a Driving force of the Tourism Industry in a Post-Covid-19 Scenario

Social Indicators Research - The tourism industry is probably one of the most affected by the crisis caused by Covid-19. It is the responsibility of politicians, tourism professionals and...     

The Ease of Hard Work: Embodied Neoliberalism among Rocky Mountain Fun Runners

Qualitative Sociology - In contemporary Western countries, thin, fit, and “healthy” bodies operate as important markers of social status. This paper draws together Foucauldian and...     

Child Migration in the US and Spain: Towards a Global Border Regime?

In The New Politics of Immigration, Professor Catherine Dauvergne proposes that as migration policies converge at the global level, the traditional difference between settler societies and former European colonies is becoming irrelevant. To test this argument, this article addresses the impact of externalization, militarization, detention and deportation on unaccompanied migrant children along the southern Spanish and US borders. I conclude that the combined used of these strategies is designed to keep all unwanted migrants away from the physical border of the state, regardless of their background, and prevents children from accessing specific protections. Current border policy in these two countries shows the primacy of national security concerns over human rights and supports Dauvergne’s argument that distinctions between former colonies and settler societies are disappearing. The evidence considered here points towards an increasingly restrictive and punitive global border regime, but one with regional variations.     

Reward‐Modulated Response Inhibition,Cognitive Shifting,and the Orbital Frontal Cortex in Early Adolescence

Immaturities in cognitive shifting are associated with adolescent risk behaviors. The orbital frontal cortex (OFC) regulates reward processing and response inhibition. This study tested the relationship between cognitive shifting, OFC activity, and reward‐modulated response inhibition in young adolescents. An fMRI antisaccade (AS) paradigm examined the effects of reward conditions on inhibitory response and OFC processing. A validated self‐report inventory assessed cognitive shifting. Compared with neutral, reward trials showed better AS performance and increased OFC activation. Cognitive shifting positively associated with AS performance in reward and neutral trials. Poorer cognitive shifting predicted greater OFC activation. Results indicate lower OFC efficiency, as greater activation to achieve correct performance, underlies cognitive shifting problems. These neurocognitive impairments are relevant for understanding adolescent risk behaviors.     

A Matter of Learning: How Human Resources Affect Organizational Performance

Recently, a number of studies have tried to examine the processes that explain the influence of high performance work systems (HPWS) on company performance, in an attempt to understand which variables mediate this relationship and to what extent they do so. The importance of the organizational learning capability (OLC) construct has traditionally been outlined as being essential for a company's survival and effective performance. Thus, it seems important to establish whether HPWS can be considered an antecedent of OLC, and consequently to confirm whether OLC acts as a mediating variable in the HPWS–company performance linkage. Bearing in mind that HPWS represent a ‘bundle’ of mutually reinforcing, overlapping and synergistic individual human resource practices, this positive connection between HPWS and OLC seems reasonable. We tested our hypotheses by applying a structural equation methodology to a sample of 163 Spanish companies. Our findings show that the effects of HPWS on organizational performance are mediated by OLC.     

人在旅途 发在受伤

“五一”长假在即，大家又可以开开心心地外出旅游击了，开心之余，千万别忘记呵护秀发。 外出旅游，也许你只关心护肤的问题，因为你觉得保护肌肤非常重要．所以总忘不了带上洗面奶、润肤露、防晒霜之粪的护肤品．却很少有带洗护发用品的习惯和意识，或嫌麻烦．或寄希望于宾馆配备的简陋用品。然而，头发与皮肤一样需要你特别的护理。也许你还没认真想过，当你走出家门到各种陌生的旅游环境中，稍不注意，你的秀发就会受到各种各样的伤害。     

Out of Sight,Out of Mind: Distancing and the Geographic Relationship Between Electricity Consumption and Production in Massachusetts*

Objective. Based on the concept of “distancing” and its implications for ecological feedback and environmental inequality, this article examines the influence of geographic distance from power plants on residential electricity consumption in Massachusetts. Methods. Mean geographic distance to all power plants in Massachusetts was calculated to a rasterized surface and aggregated by municipality for 243 cities and towns. Using stepwise regression, annual per household residential electricity consumption by municipality was regressed on mean distance to power plants, median household income, percent minority, median number of rooms, and median age. Results. Mean geographic distance to power plants and median number of rooms emerged as statistically significant predictors of per household residential electricity consumption. Conclusions. The findings lend support to the concept of “distancing” and its implications for consumption in a domestic context. This analysis offers evidence of scale‐independent similarity between global and local phenomena of environmental inequality and resource consumption.     

Comparison of the accuracy of multiple binary tests in the presence of partial disease verification

In the presence of partial disease verification, the comparison of the accuracy of binary diagnostic tests cannot be carried out through the paired comparison of the diagnostic tests applying McNemar's test, since for a subsample of patients the disease status is unknown. In this study, we have deduced the maximum likelihood estimators for the sensitivities and specificities of multiple binary diagnostic tests and we have studied various joint hypothesis tests based on the chi-square distribution to compare simultaneously the accuracy of these binary diagnostic tests when for some patients in the sample the disease status is unknown. Simulation experiments were carried out to study the type I error and the power of each hypothesis test deduced. The results obtained were applied to the diagnosis of coronary stenosis.     

The effect of verification bias on the comparison of predictive values of two binary diagnostic tests

The comparison of the accuracy of two binary diagnostic tests has traditionally required knowledge of the disease status in all of the patients in the sample via the application of a gold standard. In practice, the gold standard is not always applied to all patients in a sample, and the problem of partial verification of the disease arises. The accuracy of a binary diagnostic test can be measured in terms of positive and negative predictive values, which represent the accuracy of a diagnostic test when it is applied to a cohort of patients. In this paper, we deduce the maximum likelihood estimators of predictive values (PVs) of two binary diagnostic tests, and the hypothesis tests to compare these measures when, in the presence of partial disease verification, the verification process only depends on the results of the two diagnostic tests. The effect of verification bias on the naïve estimators of PVs of two diagnostic tests is studied, and simulation experiments are performed in order to investigate the small sample behaviour of hypothesis tests. The hypothesis tests which we have deduced can be applied when all of the patients are verified with the gold standard. The results obtained have been applied to the diagnosis of coronary stenosis.     

The Design and Performance of the Multivariate Synthetic-T 2 Control Chart

One of the objectives of research in statistical process control is to obtain control charts that show few false alarms but, at the same time, are able to detect quickly the shifts in the distribution of the quality variables employed to monitor a productive process. In this article, the synthetic-T ² control chart is developed, which consists of the simultaneous use of a CRL chart and a Hotelling's T ² control chart. The ARL is calculated employing Markov chains for steady and zero-state scenarios. A procedure of optimization has been developed to obtain the optimum parameters of the synthetic-T ², for zero and steady cases, given the values of in-control ARL and magnitude of shift which needs to be detected rapidly. A comparison between (standard T ², MEWMA, T ² with variable sample size, and T ² with double sampling) charts reveals that the synthetic-T ² chart always performs better than the standard T ² chart. The comparison with the remaining charts demonstrate in which cases the performance of this new chart makes it interesting to employ in real applications.