688 research outputs found
The Environmental Laws and Policies of Taiwan: A Comparative Law Perspective
This Article discusses the development of environmental regulation and preservation in Taiwan in light of United States environmental law. The Article begins with a discussion of how few measures have been enacted to protect the Taiwanese environment. It then illuminates some of the problems with the Taiwanese environmental regulations that do exist. According to the author, some of these problems include: ambiguous and conflicting goals enunciated in the legislation; political pressures on the authorities influencing environmental policies; poor enforcement mechanisms; a legislative bias in favor of regulating new sources of pollution and against enforcing regulations in the case of old sources; and little or no litigation over environmental laws. The author next points out the weaknesses in Taiwan\u27s policy of selective enforcement and its ineffective use of economic instruments to control pollution. The author concludes this Article with some suggestions of how Taiwan could improve its environmental regulation efforts
New Developments in Environmental Law and Policy in Taiwan
This article provides a critical review of the important developments of the environmental laws and policies of the Republic of China on Taiwan since 1993. The article also supplements the author\u27s 1990 and 1993 publications. Section II briefs the reader on background political and economic changes. Section III analyzes three new environmental statutes, including the Environmental Impact Assessment Act of 1994. Section IV investigates the problems encountered in some environmental initiatives, including the collection of air pollution control fees and the newly launched four-in-one recycling program. Section V summarizes important environmental decisions by the Administrative Court. Section VI suggests strategies for further progress, including changing the mode of legislation, making the administrative decision-making process accessible to the public, as well as reforming the judicial system
Research Exchange - March 15, 2021 Bringing Science to Practice with Dennis Galletta, Dov Te\u27eni, Stefan Seidel and moderated by Alan Dennis
This Research Exchange includes a discussion of the founders and creators of Bringing Science to Practice by Dennis Galletta, Stefan Seidel and Dov Te\u27eni. The panel discussion is moderated by Alan Dennis. The AIS In Practice: Bringing Science to Practice site can be found here (https://ais-inpractice.org/)
No alignment of cattle along geomagnetic field lines found
This paper presents a study of the body orientation of domestic cattle on
free pastures in several European states, based on Google satellite
photographs. In sum, 232 herds with 3412 individuals were evaluated. Two
independent groups participated in our study and came to the same conclusion
that, in contradiction to the recent findings of other researchers, no
alignment of the animals and of their herds along geomagnetic field lines could
be found. Several possible reasons for this discrepancy should be taken into
account: poor quality of Google satellite photographs, difficulties in
determining the body axis, selection of herds or animals within herds, lack of
blinding in the evaluation, possible subconscious bias, and, most importantly,
high sensitivity of the calculated main directions of the Rayleigh vectors to
some kind of bias or to some overlooked or ignored confounder. This factor
could easily have led to an unsubstantiated positive conclusion about the
existence of magnetoreception.Comment: Added electronic supplement with source dat
Multiple Approaches to the Buildup of Asymmetric Polyelectrolyte Multilayer Membranes for Efficient Water Purification
The versatility of polyelectrolyte multilayer (PEM) coatings is very promising for their use as separation layers in nanofiltration applications. These membranes can for example be suited for the removal of micropollutants, such as medicines and pesticides, from water. The selectivity of PEM coatings can be further improved by so-called asymmetric coating. In this approach, the pores of the support membrane are filled with an open PEM layer to maintain a good water permeability, and subsequently a thin, dense layer is coated on top to determine the separation properties. Coating a dense top layer can be achieved in different ways. In this work, we systematically investigate the effectiveness of these different types of top layers. We show that coating a top layer at lower ionic strength than the bottom layer leads to a higher permeability and MgSO4Â retention, compared with the reference, bottom-type layer coated with the same total number of layers. Also, other salt retentions can be improved with this approach. However, micropollutant retentions are hardly affected. Coating a top layer with a polyelectrolyte pair that forms denser layers at equal ionic strength, in contrast, leads to a significant change in separation properties with much higher MgSO4Â and micropollutant retentions and improved water permeability compared with the reference layer. The concept of membrane optimization via asymmetric coating is thus most effective when using different polyelectrolyte pairs on top of each other. Moreover, we show that this approach allows us to selectively cross-link the top layer for further enhancement of the micropollutant retention, while water permeability is not much reduced. Asymmetric PEM coatings are therefore a promising method to optimize PEM membranes for micropollutant removal and other separation processes
Joint modelling of serological and hospitalization data reveals that high levels of pre-existing immunity and school holidays shaped the influenza A pandemic of 2009 in the Netherlands.
Obtaining a quantitative understanding of the transmission dynamics of influenza A is important for predicting healthcare demand and assessing the likely impact of intervention measures. The pandemic of 2009 provides an ideal platform for developing integrative analyses as it has been studied intensively, and a wealth of data sources is available. Here, we analyse two complementary datasets in a disease transmission framework: cross-sectional serological surveys providing data on infection attack rates, and hospitalization data that convey information on the timing and duration of the pandemic. We estimate key epidemic determinants such as infection and hospitalization rates, and the impact of a school holiday. In contrast to previous approaches, our novel modelling of serological data with mixture distributions provides a probabilistic classification of individual samples (susceptible, immune and infected), propagating classification uncertainties to the transmission model and enabling serological classifications to be informed by hospitalization data. The analyses show that high levels of immunity among persons 20 years and older provide a consistent explanation of the skewed attack rates observed during the pandemic and yield precise estimates of the probability of hospitalization per infection (1-4 years: 0.00096 (95%CrI: 0.00078-0.0012); 5-19 years: 0.00036 (0.00031-0.0044); 20-64 years: 0.0015 (0.00091-0.0020); 65+ years: 0.0084 (0.0028-0.016)). The analyses suggest that in The Netherlands, the school holiday period reduced the number of infectious contacts between 5- and 9-year-old children substantially (estimated reduction: 54%; 95%CrI: 29-82%), thereby delaying the unfolding of the pandemic in The Netherlands by approximately a week
Risk based culling for highly infectious diseases of livestock
The control of highly infectious diseases of livestock such as classical swine fever, foot-and-mouth disease, and avian influenza is fraught with ethical, economic, and public health dilemmas. Attempts to control outbreaks of these pathogens rely on massive culling of infected farms, and farms deemed to be at risk of infection. Conventional approaches usually involve the preventive culling of all farms within a certain radius of an infected farm. Here we propose a novel culling strategy that is based on the idea that farms that have the highest expected number of secondary infections should be culled first. We show that, in comparison with conventional approaches (ring culling), our new method of risk based culling can reduce the total number of farms that need to be culled, the number of culled infected farms (and thus the expected number of human infections in case of a zoonosis), and the duration of the epidemic. Our novel risk based culling strategy requires three pieces of information, viz. the location of all farms in the area at risk, the moments when infected farms are detected, and an estimate of the distance-dependent probability of transmission
Heterosubtypic cross-reactivity of HA1 antibodies to influenza A, with emphasis on nonhuman subtypes (H5N1, H7N7, H9N2)
Epidemics of influenza A vary greatly in size and age distribution of cases, and this variation is attributed to varying levels of pre-existing immunity. Recent studies have shown that antibody-mediated immune responses are more cross-reactive than previously believed, and shape patterns of humoral immunity to influenza A viruses over long periods. Here we quantify antibody responses to the hemagglutinin subunit 1 (HA1) across a range of subtypes using protein microarray analysis of cross-sectional serological surveys carried out in the Netherlands before and after the A/2009 (H1N1) pandemic. We find significant associations of responses, both within and between subtypes. Interestingly, substantial overall reactivity is observed to HA1 of avian H7N7 and H9N2 viruses. Seroprevalence of H7N7 correlates with antibody titers to A/1968 (H3N2), and is highest in persons born between 1954 and 1969. Seroprevalence of H9N2 is high across all ages, and correlates strongly with A/1957 (H2N2). This correlation is most pronounced in A/2009 (H1N1) infected persons born after 1968 who have never encountered A/1957 (H2N2)-like viruses. We conclude that heterosubtypic antibody cross-reactivity, both between human subtypes and between human and nonhuman subtypes, is common in the human population
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