Land Policy and Farming Practices in Laos

The government of Laos has identified the eradication of poverty as a priority. Given the primarily agricultural character of the country, it has selected land reform as a core policy to reach this goal. The policy has two major aims: to increase land tenure security in order to encourage farmer involvement in intensive farming, and to eliminate slash‐and‐burn agriculture to protect the environment in a country still rich in forest resources. State intervention takes the form of land allocation, a process which combines the protection of some areas of village land with the formal recognition of private ownership in authorized farming areas. In a country with different types of geography, the effects of the policy are variable, but the research presented in this article demonstrates that the land laws have shortcomings which allow for differing interpretations depending on the local social relationships. Since local specificities are not taken into account, the reform is proving counterproductive for both forest protection and agricultural modernization, as well as having a negative social impact by marginalizing the poorest farmers.     

Modeling Air Quality in Urban Areas: A Cell‐Based Statistical Approach

Statistical regression models are presented that explain the observed variations, across urban areas, in the concentrations of two major pollutants, ozone and carbon monoxide. Model specification and estimation are based on an explicit and new spatial framework derived from the theoretical concept of well‐mixed cells, whereby the basic Fickian system of diffusion equations is integrated over the regional space partitioned into a grid of large cells. The concentration in each cell results from the balance of pollutant flows into and out of this cell and of pollutant emissions and removal within that cell, and is expressed as the sum of two concentration contributions: (1) the local effect, dependent upon pollution‐related factors around the measuring station, and (2) the regional effect, dependent upon pollutant flows originating outside the local area. A large database is developed, making extensive use of GIS technology, to spatially relate such data as pollution measurements, meteorological factors, land‐use characteristics, census socioeconomic data, and major highway network characteristics. The results confirm the appropriateness of the well‐mixed cell framework, are in line with general knowledge regarding the determinants of ozone and carbon monoxide concentrations, and clarify the role of transportation, residential fuel use, economic activities, natural environments, and meteorological factors such as temperature and solar radiation. About SO percent of the variations in concentrations are explained by these models. Several areas of further research are outlined.     

试论拉丁美洲现代化步履维艰的文化根源

天主教伦理是拉丁美洲文化体系的主要基础 ,这是西班牙和葡萄牙对美洲征服和殖民化过程中所留下的遗产。这套伦理观对拉美人的思想意识和行为方式产生了非常重要的影响 ,成为具有伊比利亚传统的拉丁美洲经济长期难以走出不发达的主要根源之一。拉美地区走出不发达的状态首先在于走出文化精神上的“不发达”。     

From Promising Settler to Undesirable Immigrant: The Deportation of British-born Migrants from Mental Hospitals in Interwar Australia and South Africa

This article examines the process by which British-born migrants to Australia and South Africa were deported from mental hospitals in the 1920s and 1930s. It shows how men and women who arrived as permanent settlers could be re-classified as immigrants subject to expulsion. Debates over who was responsible for those who through mental illness or alcoholism were deemed ‘undesirable’ were conducted at the levels of both high diplomacy and petty bureaucracy. Tracing the history of deportation as a means of social engineering within the empire, this article highlights the tension between the transnational ideology of white supremacy and its expression in national terms. Using the case files of those deported from two settler colonial mental hospitals, Callan Park in Sydney and Valkenberg in Cape Town, as well as official deportation paperwork, it also traces how such diplomatic decisions were refracted through the process of attempted implementation. These files show firsthand both the social history of deportation and the mechanisms through which the settler colonial state aimed to shape its population by excluding not only those perceived to be racially other, but also those judged to be racially unfit. The process of determining domicile and of deportation itself reveals much about the frequently precarious circumstances and life histories of these migrants and their often far-flung networks, as well as the ways in which migrants and their families were able to negotiate the regulatory mechanisms of both the state and the asylum.     

New records of the hypercalcified sponge Plectroninia (Calcarea,Minchinellidae) in the Recent deep ocean

Vacelet, J., James, B. 1, & Zibrowius, H., November 2017. New records of the hypercalcified sponge Plectroninia (Calcarea, Minchinellidae) in the Recent deep ocean. Alcheringa 42, 312–319. ISSN 0311-5518

Numerous small specimens of hypercalcified sponges of the genus Plectroninia (Jurassic to Recent) are recorded from deep water in the Atlantic, Indian and Pacific oceans, where they are attached to diverse hard substrata, mostly scleractinian skeletons. Being represented as skeletons of linked calcareous tetractines with an incomplete free spicule complement, the specimens could not be identified at the species level. These observations show that Plectroninia spp. have a wide distribution in the bathyal zone of the Recent World Ocean, where they may be the most common calcareous sponges.

Jean Vacelet* [jean.vacelet@imbe.fr], Benjamin James [ben.james672@gmail.com], Helmut Zibrowius [helmut.zibrowius@gmail.com] UMR 7263 IMBE, Institut Méditerranéen de Biodiversité et d’Écologie Marine et Continentale, CNRS, IRD, Aix Marseille Université, Avignon Université, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France.     

Assessing the relationship between physician availability and viral load suppression in British Columbia

In 2014, the Joint United Nations Programme on HIV/AIDS set the target of dramatically reducing the burden of HIV through expansion of access to timely HIV treatment. In order to achieve this target, it is necessary to expand access to care along the HIV cascade of care. This study examines the relationship between viral suppression and the availability of physicians providing HIV treatment in British Columbia, Canada. Data from the Drug Treatment Program of the British Columbia Centre for Excellence in HIV/AIDS was analyzed. The floating catchment method was used to assess physician availability and multivariable logistic regression was used to implement a confounder selection technique to independently assess the relationship between physician availability and viral load suppression. Individuals with more than 25 physicians within a one‐hour catchment were more likely to reside in urban areas and almost twice as likely to have a suppressed viral load (adjusted odds ratio: 1.97; 95% CI 1.50 – 2.58). This study highlights the impact of physicians’ availability on viral load levels. Mapping technology was used to identify the locations in which patients were most impacted by the lack of physicians.