An Examination of the Stochastic Distribution of Spatial Accessibility to Intensive Care Unit Beds during the COVID-19 Pandemic: A Case Study of the Greater Houston Area of Texas

Sufficient and reliable health care access is necessary for people to be able to maintain good health. Hence, investigating the uncertainty embedded in the temporal changes of inputs would be beneficial for understanding their impact on spatial accessibility. However, previous studies are limited to implementing only the uncertainty of mobility, while health care resource availability is a significant concern during the coronavirus disease (COVID-19) pandemic. Our study examined the stochastic distribution of spatial accessibility under the uncertainties underlying the availability of intensive care unit (ICU) beds and ease of mobility in the Greater Houston area of Texas. Based on the randomized supply and mobility from their historical changes, we employed Monte Carlo simulation to measure ICU bed accessibility with an enhanced two-step floating catchment area (E2SFCA) method. We then conducted hierarchical clustering to classify regions of adequate (sufficient and reliable) accessibility and inadequate (insufficient and unreliable) accessibility. Lastly, we investigated the relationship between the accessibility measures and the case fatality ratio of COVID-19. As result, locations of sufficient access also had reliable accessibility; downtown and outer counties, respectively, had adequate and inadequate accessibility. We also raised the possibility that inadequate health care accessibility may cause higher COVID-19 fatality ratios.     

Bronze technology of the ancient megalithic communities in the Vidarbha region of India

Metallographic examination was carried out on forty-nine copper and bronze objects from five megalithic sites located in Vidarbha, India. The artifact assembly consists of horse ornaments, kitchenware, bangles, rings, small bells and the hilt of an iron dagger. Results show that the technology involved is characterized by the use of bronze alloys containing approximately 10% tin based on weight and the application of forging as a key method of fabrication. No deliberate addition of lead was observed. Arsenic was detected, but very rarely and only as an insignificant minor element. The consistent selection of such specific alloys indicates that the megalithic communities in this particular region had established a fully developed and standardized bronze tradition optimized for the production of forged items. Their advanced technological status was also noted in a special technique applied to two forged high-tin bronze bowls. Such a unique bronze tradition, dedicated to sheet metal technology, was most likely a practical choice made by these people to take advantage of the changing role of bronze. Specifically, with the introduction of iron, bronze seems to have become a more prestigious material that could serve as an indicator of the appearance of a more rigid socio-economic stratification within the megalithic communities of the Vidarbha region.     

The political economy of economic reform in North Korea

For over 10 years, North Korea has undergone a severe economic crisis, including food shortages, which has inflicted great suffering upon the North Korean people. Given such dire realities, it is beyond all doubt that the North Korean government should actively carry out comprehensive economic reforms as quickly as possible which aim to transform North Korea's present inefficient socialist planned economic system into a market economic system. Many argue that such reforms would give rise to successful economic growth in North Korea, which could enhance the legitimacy of the North Korean regime. Yet, the North Korean regime has consistently avoided implementing economic reforms, even though it has had a number of opportunities to do so. The July 1st reforms, which were introduced in 2002, have been half-hearted and inconsistently applied. This then raises an important question: Why has the North Korean government avoided adopting comprehensive economic reforms? In other words, what is the crucial barrier that has hindered North Korea's implementation of economic reforms? This article pinpoints North Korea's unique political system—i.e. its monolithic system of political control and policy making which exhibits the highest level of power concentration in one individual among all political systems—as the biggest barrier to economic reforms. No doubt North Korea desperately needs comprehensive economic reforms, in light of its economic crisis and food shortages. Nonetheless, the current North Korean regime has avoided adopting such reforms since they will undermine North Korea's monolithic system. In conclusion, North Korea's monolithic system has been the biggest obstacle to North Korea's economic reforms.     

20世纪三四十年代中共在陕甘宁边区与哥老会关系论析

研究共产主义革命与秘密结社的关系,即秘密结社在近代革命过程中的地位与作用,是一个具有挑战性的主题。本论文通过对陕甘宁边区哥老会与共产主义运动关系的例证考察,重新检讨以往的“连续性论（亲和性论）”,“非连续性论（不溶性论）”和“竞争关系论”等观点。长征以前,当地的革命家们试图去适应秘密结社所植根的农村底层文化。刘志丹主动加入哥老会,动员其与哥老会的个人、社会关系便是这种灵活适应的一个完美的例子。长征后,中共中央进一步试图对哥老会进行全面公开的政治化。在这一政治化进程中,哥老会固有的政治、道德口号成为重要的连接纽带。但是,共产党和哥老会的这种关系并不是对称、对等的。共产党通过“毛泽东路线”的灵活性开始逐渐在当地构筑自己的势力。在共产党的系统构造框架之内,哥老会虽说可以在共产党统治地区内生存,但无法取得更大的发展。     

LEAST SQUARES ESTIMATES OF THE REGIONAL EMPLOYMENT MULTIPLIER: AN APPRAISAL*

Basically, we have attempted to show the following in the course of setting out the algebra of regression analysis of selected regional employment multiplier models: (1) When the basic features of the model are shaped by the assumption of an unlagged response of local employment to changes in export employment, the least squares estimates of the multipliers are highly sensitive to the export coefficients vector A, given the sample observation matrix X. In a completely disaggregated model such as Equation (21), the multipliers are solely determined by the export coefficients and thus are entirely independent of sample observations. However, this independence does not hold in the case of a partially disaggregated model. The identity relation is also destroyed when a lag relationship is introduced into a completely disaggregated model. (2) A simple lag model produces results bascially different from those obtained by an unlagged model if the overall differences between current and lagged observations are significant. (3) Given a matrix of sample observations on employment, it is possible to estimate the upper limits of a least-squares aggregate multiplier and its variance simply from knowledge of the export coefficients (4) The export coefficients vector has also an important bearing upon the correlation coefficient. The correlation is unity if and only if the export coefficients vector is proportional to the local employment coefficients vector, while it is zero if and only if the export coefficients vector is a vector all of whose elements are one. Also, the correlation coefficient is equal to one when a completely disaggregated model is used. There is finally the question of what these results mean in terms of the formulation of a multiplier model. First of all, in view of the crucial importance of the export coefficients and the difficulties of estimating them, most of the existing models do not seem to offer promising results. Furthermore, all the models examined here have made some simplifying assumption with respect to the constancy of the export coefficients. It remains highly uncertain whether these coefficients are reasonably stable over time. Of course, it would be theoretically more acceptable to relax the assumption of the invariance of export coefficients and to obtain such coefficients at different points of time for each industry. However, this would be accomplished only at the cost of increased difficulties of estimating larger numbers of export coefficients. In addition, there is some doubt as to the validity of the assumption that export employment is proportional to export sales. Since a lag relationship is important not only in terms of attempts to formulate multiplier models more realistically, but also in terms of its significant effect on the multiplier values obtained, the nature and the form of a lagged response and its estimation problems need to be investigated in depth. Finally, problems of least squares bias and efficiency, inference, and prediction which may arise in the context of various models presented here remain to be investigated. A detailed analysis of such problems must be the subject of further investigation.     

Ability of students to recognize the relationship between using mobile apps for learning during fieldwork and the development of graduate attributes

The increasing importance of employability in Higher Education curricula and the prevalence of using mobile devices for field-based learning prompted an investigation into student awareness of the relationship between the use of mobile apps for learning and the development of graduate attributes (GAs) (and the link to employability). The results from post-fieldwork focus groups from four field courses indicated that students could make clear links between the use of a variety of mobile apps and graduate attribute development. The study suggests a number of mobile apps can align simultaneously with more than one graduate attribute. Furthermore, prior experience and the context of use can influence students’ perceptions of an app and its link with different GAs.     

Exploiting Sino-US Geostrategic Competition: The View from Seoul and Singapore

The mainstream literature on weak status quo states’ diplomacy tends to identify their regional security roles in terms of dealing with non-traditional security issues. This article argues that such a limited approach is not sufficient to explain the current security dynamics in the Asia-Pacific. This article reviews the literature on weak status quo states’ influence on regional order. It then identifies a security environment in which they are more likely to exert some impact on maintaining and building a regional order. After contextualising these discussions in the Asia-Pacific setting, the article examines the experience of South Korea and Singapore as secondary powers in the East Asian region. Although both countries enjoy high levels of security cooperation with the US, both have also been able to exercise a certain amount of influence in advancing their own geostrategic interests amidst the growing Sino-US geostrategic competition. Yet their exploitation of Sino-US geostrategic competition is neither a simple balancing strategy against China nor a simple bandwagoning with the US, since both South Korea and Singapore have been increasing bilateral and multilateral security cooperation with China.     

Redescription of the Miocene penguin Pseudaptenodytes macraei Simpson (Aves: Sphenisciformes) and redefinition of the taxonomic status of ?Pseudaptenodytes minor Simpson

Pseudaptenodytes macraei is redescribed in detail using current avian anatomical terminology. The age of the species is constrained to the late Miocene, and two humeral autapomorphies are identified for the species: a flattened elliptical ventral portion of the fossa tricipitalis and a curved margo cranialis lacking a preaxial angle. Pseudaptenodytes macraei is a distinct taxon based on a diagnostic-type specimen, but it is recommended that the nominal congener Pseudaptenodytes minor be designated a nomen dubium pending the discovery of more complete material.