Emissions from Mass Burn Resource Recovery Facilities

Recent resource recovery facility stack tests have increased the available pool of data on emissions from these facilities. This has led to more accurate predictions of emissions from proposed facilities. The source, type, and rate of emissions presented are based upon a review of the literature, theoretical approaches, stack test data from existing facilities, permit levels of other facilities, and discussions with equipment manufacturers. The pollutants selected for study are those regulated by United States Environmental Protection Agency (USEPA) Prevention of Significant Deterioration (PSD) regulations and other pollutants of concern. The pollutants studied are particulate matter, sulfur dioxide, nitrogen oxides, carbon monoxide, nonmethane hydrocarbons, hydrogen sulfide, reduced sulfide, reduced sulfur compounds, total reduced sulfur, lead, mercury, beryllium, arsenic, cadmium, chromium, chromium +6, copper, manganese, nickel, vanadium, zinc, hydrogen chloride, fluorides, sulfuric acid mist, polynuclear aromatic hydrocarbons, polychlorinated biphenyls, vinyl chloride, dioxins, furans, formaldehyde, and asbestos.     

Policy Perspectives on Social,Agricultural, and Rural Sustainability1

Abstract Three types of agricultural, or sustainability, policy are introduced. One deals with the interests of society, another with the agricultural sector, and the third with rural people and places. Each type serves different purposes, interest groups, and issues. Yet, they share some common ground. Because social, agricultural, and rural objectives are interdependent, we need all three policy types if any is to be effective in a highly specialized society. Agricultural policy often substitutes for rural policy, but this is inadequate. Factors shaping the rural policy context include regionality, the large rural population, the rural situation, lack of rural human resource development, technological displacement, and legislation. The environment, economic change, physical infrastructure, social services, jobs, and the role of land grant universities are issues to be considered in rural policy.     

The Logic and Meaning of the Logico-Meaningful Method*

La “recherche du sens logique” chez Pitirim A. Sorokin n'est pas une méthode qui contredise les principes généraux de la science, comme longtemps les critiques I'ont prétendu. Il s'agit plutôt d'une méthode qui rencontre les exigences prescrites afln d‘élaborer des modèles théoriques d'un niveau d'abstraction élevéà partir de données empiriques. Cette methode propose une façon d'agencer les faits sociaux et culture] s en ayant recours a un ensemble conceptuel grace a des types ideaux. II s'agit d'une espèce de conceptualisation qui a une grande valeur explicative et qui peut permettre de plus l’élaboration de nouvelles théories.     

The formal dynamics of controlled populations and the echo,the boom and the bust

This paper analyzes the pattern of fluctuations of births in an age-structured population whose growth is subject to environmental or economic constraint. It synthesizes the traditional demographic analysis of age-structured renewal with constant vital rates and the economic analysis which treats population change endogenously. When cohort fertility depends on relative cohort size, or when period fertility depends on labor force size, fluctuations of forty or more years replace the traditional "echo" or generation-length cycle. Twentieth-century U. S. fertility change agrees well with the theory, as the "Easterlin Hypothesis" suggests; but the period model fits better than the cohort model.     

REPRESENTING GANGS IN THE NEWS: MEDIA CONSTRUCTIONS OF CRIMINAL GANGS

This research, based on a content analysis of 4,445 newspaper articles, examines the images that emerge from stories of criminal gangs and societys responses to them. Eight recurrent themes were identifed. It was discovered that articles devoted to the coverage of gang crimes were outnumbered by stories dealing with various community responses. Articles reporting the results of scientifc research on gangs constituted the smallest category. The results are discussed in light of their importance in the construction of social problems discourse and the maintenance of symbolic power and social control.     

How many names are enough? Identifying network effects with the least set of listed contacts

How many names are enough to reveal network effects using a name generator for network analysis? We analyze network data from two large organizations varying in complexity. We ask how much the network association with achievement is strengthened by adding another name to the recorded list of each person's sociometric citations. We conclude that five names is the cost effective number of sociometric citations to record. The network association with achievement weakens quickly with fewer names, especially in the more clustered network.     

Antibiotic Resistance in Urinary Tract Infections in College Students

Abstract

Objective: To determine resistance to antibiotics of Escherichia coli in uncomplicated urinary tract infections (uUTIs) in female college students. Participants: Symptomatic patients presenting to a student health service from September 2008 to December 2009. Methods: Clean catch midstream urine samples were tested for urinalysis (UA) and culture and sensitivity. Results: Of 168 students enrolled in the study, 138 had positive UA, and 94 of these grew >100,000 colonies/mL of E. coli. Ampicillin resistance was 31.9%, trimethoprim-sulfamethoxazole (TMP-SMX) resistance 16.0%, ciprofloxacin resistance 4.3%, amoxicillin/clavulanate resistance 3.2%, and nitrofurantoin resistance 1.1%. The sensitivity of UA was 95.4% and the positive predictive value was 87.0% (p ≤ .001). Specificity was 77.5% and negative predictive value 92.9%. Conclusions: In healthy college women with uUTI symptoms, TMP-SMX should not be universally used for empirical therapy, whereas use of ciprofloxacin, amoxicillin/clavulanate, and nitrofurantoin are appropriate.