Fishing in Urban New Jersey: Ethnicity Affects Information Sources,Perception, and Compliance

Recreational and subsistence angling are important aspects of urban culture for much of North America where people are concentrated near the coasts or major rivers. Yet there are fish and shellfish advisories for many estuaries, rivers, and lakes, and these are not always heeded. This paper examines fishing behavior, sources of information, perceptions, and compliance with fishing advisories as a function of ethnicity for people fishing in the Newark Bay Complex of the New York–New Jersey Harbor. We test the null hypothesis that there were no ethnic differences in sources of information, perceptions of the safety of fish consumption, and compliance with advisories. There were ethnic differences in consumption rates, sources of information about fishing, knowledge about the safety of the fish, awareness of fishing advisories or of the correct advisories, and knowledge about risks for increased cancer and to unborn and young children. In general, the knowledge base was much lower for Hispanics, was intermediate for blacks, and was greatest for whites. When presented with a statement about the potential risks from eating fish, there were no differences in their willingness to stop eating fish or to encourage pregnant women to stop. These results indicate a willingness to comply with advisories regardless of ethnicity, but a vast difference in the base knowledge necessary to make informed risk decisions about the safety of fish and shellfish. Although the overall median income level of the population was in the $25,000–34,999 income category, for Hispanics it was on the border between $15,000–24,999 and $25,000–34,999.     

Probabilistic Reliability Modeling for Oil Exploration & Production (E&P) Facilities in the Tallgrass Prairie Preserve

The aging domestic oil production infrastructure represents a high risk to the environment because of the type of fluids being handled (oil and brine) and the potential for accidental release of these fluids into sensitive ecosystems. Currently, there is not a quantitative risk model directly applicable to onshore oil exploration and production (E&P) facilities. We report on a probabilistic reliability model created for onshore exploration and production (E&P) facilities. Reliability theory, failure modes and effects analysis (FMEA), and event trees were used to develop the model estimates of the failure probability of typical oil production equipment. Monte Carlo simulation was used to translate uncertainty in input parameter values to uncertainty in the model output. The predicted failure rates were calibrated to available failure rate information by adjusting probability density function parameters used as random variates in the Monte Carlo simulations. The mean and standard deviation of normal variate distributions from which the Weibull distribution characteristic life was chosen were used as adjustable parameters in the model calibration. The model was applied to oil production leases in the Tallgrass Prairie Preserve, Oklahoma. We present the estimated failure probability due to the combination of the most significant failure modes associated with each type of equipment (pumps, tanks, and pipes). The results show that the estimated probability of failure for tanks is about the same as that for pipes, but that pumps have much lower failure probability. The model can provide necessary equipment reliability information for proactive risk management at the lease level by providing quantitative information to base allocation of maintenance resources to high-risk equipment that will minimize both lost production and ecosystem damage.     

Social Support Networks of African-American Children Attending Head Start: A Longitudinal Investigation of Structural and Supportive Network Characteristics

This study examined the stability and coherence of African‐American children's social support networks. Participants included a total of 106 3‐ to 4‐year‐old children attending Head Start centers located in the southeast. Children completed a social network interview in two consecutive years at the Head Start centers. These interviews tapped multiple dimensions of the support network including social embeddedness, proportion of the network providing support, and perceived support. Analyses focused on both the rank‐order stability of children with respect to network characteristics as well as stability of network relationships (the same individuals included in the network at both time periods). Results indicated age‐related increases in network size for adult and child categories, network size across three support domains, proportion of support scores, and perceived support from adults. In addition to age‐related changes, analyses revealed considerable rank‐order stability with respect to structural network dimensions, but very little rank‐order stability in proportion of support and perceived support scores. In contrast, both structural and supportive components of the children's networks were shown to be coherent over a one‐year period when specific network member relationships were examined. Discussion highlights both continuities and discontinuities in young children's social networks, and how data obtained in this study contribute to theory building and the systematic examination of African‐American children's emerging social networks.     

Local Produce,Foreign Labor: Labor Mobility Programs and Global Trade Competitiveness in Canada*

Abstract Temporary visa workers are increasingly taking on a heightened profile in Canada, entering the workforce each year in greater numbers than immigrant workers with labor mobility rights (Sharma 2006). This paper examines the incorporation of foreign workers in Canadian horticulture under the Seasonal Agricultural Workers Program (SAWP). I argue that foreign labor supplied under the SAWP secures a flexible workforce for employers and thus improves Canada's trade competitiveness in the global agrifood market. Using multiple research strategies, I track the evolution of Canadian horticulture in the global market and the transformation of labor in this industry. I outline the steady growth in the employment of temporary visa workers in the horticultural industry and show how they have become the preferred and, in some cases, core workforce for horticulture operations. The benefits of SAWP workers to employers include the provision of a workforce with limited rights relative to domestic workers and considerable administrative support in selecting, dispatching, and disciplining workers provided at no cost by labor supply countries. I conclude that the SAWP is a noteworthy example of the role of immigration policy in regulating the labor markets of high‐income economies and thus ensuring the position of labor‐receiving states within the global political economy.     

Learning about radon's risk

This article reports the results of an evaluation of the effectiveness of different types of information materials in communicating the risk from exposure to radon, a naturally occurring indoor air pollutant. The study involved a panel of 2300 homeowners who actually experienced risks from radon, and the information program used to explain these risks. The analysis considered information transfer and performance on specific tasks requiring information on the risk from radon to measure learning. The results suggest a systematic learning process, but indicate that the process can be influenced by how risk information is presented.     

Benefit Analysis for Natural Hazards

The objective of this paper is to develop the ex ante perspective for benefit analysis with natural hazards. It defines an ex ante evaluation of the economic benefits that arise from policies designed to reduce either the risk of or the detrimental effects associated with a natural hazard. In the process the paper compares the ex ante and ex post perspectives and discusses the prospects for implementing the framework by measuring the valuation concepts that are developed.     

Strategic Liquidity Provision in Limit Order Markets

We characterize and prove the existence of Nash equilibrium in a limit order market with a finite number of risk‐neutral liquidity providers. We show that if there is sufficient adverse selection, then pointwise optimization (maximizing in p for each q) in a certain nonlinear pricing game produces a Nash equilibrium in the limit order market. The need for a sufficient degree of adverse selection does not vanish as the number of liquidity providers increases. Our formulation of the nonlinear pricing game encompasses various specifications of informed and liquidity trading, including the case in which nature chooses whether the market‐order trader is informed or a liquidity trader. We solve for an equilibrium analytically in various examples and also present examples in which the first‐order condition for pointwise optimization does not define an equilibrium, because the amount of adverse selection is insufficient.     

如何理解新时代中国共产党的文化与中国故事——访伦敦国王学院中国研究中心主任凯瑞·布朗教授

凯瑞·布朗是享誉世界的中国问题研究专家。2019年1月,凯瑞·布朗在访谈中谈到了他对中国共产党的文化以及中国故事的理解。他主张以中国共产党的历史为基础,植根中国的传统文化来理解中国共产党的文化,理解中国故事,分析中国政治与全球秩序。中国共产党的力量植根于改革开放的伟大进程中;一部成功的中国故事,就是具有积极愿景的未来的故事,是一个信仰团体的故事,是道德正义的故事;只有植根中国历史与文化,才可以理解并解决中西方的“幻象冲突”问题。     

Effectively Evaluating the Accessibility of Electronic Monographs Using VPATs and Other Resources at the College of Staten Island Library- CUNY

Abstract

This study, building upon previous research work at the College of Staten Island (CSI) library, attempts to evaluate the accessibility of select digital monograph platforms and file formats utilized at the City University of New York (CUNY). The usability of CSI library’s locally developed ER-ACT tool to assist librarians with limited technical knowledge to review VPATs and to perform simple testing was also evaluated with challenges and successes reported. It was determined that the use of color-coded results in this study can help identify serious accessibility issues within ebooks and to communicate the results within libraries to assist with collection development decision-making. The study also includes a review of new court rulings related to accessibility issues in higher education and discusses where accessibility staffing reports in terms of job roles and duties held by university professionals. The testing of the accessibility of library ebooks, with various accessibility tools, are reviewed within the context of Section 508 revisions and new VPAT standards.