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31.
C. Johnson Ph.D. C. Lewis S. Love L. Lewis M. Stuckey 《Journal of youth and adolescence》1984,13(1):15-26
To investigate the incidence and correlates of bulimic behavior, 1268 high school females were surveyed. A 47-item questionnaire was used to identify a group of students that would meet the DSM-III criteria for a probable diagnosis of bulimia. Students were then compared across the four content areas of demographics; body perception and weight information; dieting, exercise and menstrual behavior; and frequency of bingeing and purging behavior. Results indicated that 4.9% of the students met rigorous criteria for the diagnosis of bulimia. Between-group comparisons indicated that body dissatisfaction, drive for thinness, and chronicity of dieting differentiated the two groups.This work was supported by Biomedical Research Grant #RR5476, the Sears Allstate Foundation, and the George and Tina Barr Foundation.Main interest is eating disorders. 相似文献
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Does Performance Budgeting Work? An Examination of the Office of Management and Budget’s PART Scores
In this paper, the authors use the Bush administration's management grades from the Program Assessment Rating Tool (PART) to evaluate performance budgeting in the federal government—in particular, the role of merit and political considerations in formulating recommendations for 234 programs in the president's fiscal year 2004 budget. PART scores and political support were found to influence budget choices in expected ways, and the impact of management scores on budget decisions diminished as the political component was taken into account. The Bush administration's management scores were positively correlated with proposed budgets for programs housed in traditionally Democratic departments but not in other departments. The federal government's most ambitious effort to use performance budgeting to date shows both the promise and the problems of this endeavor. 相似文献
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Paul A. Lewis 《政治学》2002,22(1):17-23
Researchers in political science are devoting increasing attention to the ontological commitments of their theories – that is, to what those theories presuppose about the nature of the political world. This article focuses on a recent contribution to this 'ontological turn' in political science ( Sibeon, 1999 ). Tensions are identified in Sibeon's account of the causal interplay between agency and social structure. It is argued that these tensions can be resolved by reflecting explicitly on ontological issues, in particular the causal efficacy of social structure, using a particular approach to the philosophy of the social sciences known as critical realism. The value of such reflection for the explanatory power of political analysis is highlighted. 相似文献
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In an era when everyone wants to be a millionaire, governments struggle to attract and retain highly qualified employees, making it more important than ever to understand what attracts people to the public service. Using contingency table analysis and logistic regression on the 1989 and 1998 General Social Surveys, we explore how individuals' demographic characteristics and the importance they place on various job qualities influence their preference for and employment in the public sector. Job security may still be the strongest attraction of government jobs, but high income and the opportunity to be useful to society also attract some Americans to the public service. Minorities, veterans, Democrats, and older Americans preferred public-sector jobs more than whites, nonveterans, Republicans, and younger Americans, who were otherwise similar. Women and college graduates were more likely than comparable men and less-educated respondents to have government jobs, but no more likely to prefer them. Overall, desire for government jobs declined markedly between 1989 and 1998. 相似文献
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Lewis RJ Huffine EF Chaturvedi AK Canfield DV Mattson J 《Journal of forensic sciences》2000,45(4):898-901
During fatal aviation accident investigations, biosamples from the victims are submitted to the FAA Civil Aeromedical Institute (CAMI) for drug analysis. In the process of one such analysis by CAMI, an unknown substance was found in a urine sample. Simultaneous screening by thin layer chromatography (TLC) and gas chromatography/FID (GC/FID) suggested the presence of pseudoephedrine. A subsequent routine confirmation analysis of a separate urine aliquot by GC Fourier transform infrared (GC/FTIR) and GC mass spectrometry (GC/MS) indicated that the retention times of the unknown substance matched with those of pseudoephedrine. However, its infrared and mass spectra were different--the -OH and -NH groups were missing, a C-O-C group was present, and the molar mass was 12 atomic mass units (amu) more than that of pseudoephedrine. A subsequent literature search suggested that ephedrine-like amines react with aldehydes to form oxazolidines. Therefore, the 12-amu increase could be accounted for by condensation of pseudoephedrine with formaldehyde. Since this aldehyde is present in various grades of methanol and ethyl acetate, and these solvents were used during the solid-phase extraction, 3,4-dimethyl-5-phenyl-1,3-oxazolidine was synthesized by using (+)-pseudoephedrine HCl and formaldehyde. The analytical findings of the synthesized compound were consistent with those of the unknown interfering substance, confirming that it was the oxazolidine. Aldehyde contaminants in solvents or specimens can transform drugs of interest and may result in misidentification of a compound originally present in specimens. Therefore, chemicals used in analyses should be of the highest available purity, and a multi-analytical approach should be adopted to maintain a high degree of quality assurance. 相似文献
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Morphine-3-D glucuronide stability in postmortem specimens exposed to bacterial enzymatic hydrolysis
Carroll FT Marraccini JV Lewis S Wright W 《The American journal of forensic medicine and pathology》2000,21(4):323-329
Medical examiners frequently rely on the finding of free morphine present in postmortem specimens to assist in certifying deaths associated with narcotics. In vitro hydrolysis of morphine-3-D glucuronide (M3DG) to free morphine was studied using variable specimen pH, initial degree of specimen putrefaction, storage temperature and time, and the effectiveness of sodium fluoride (NaF) preservation. Reagent M3DG was added to opiate-free fresh blood and urine and to autopsy-derived blood specimens. Reagent bovine glucuronidase was also added to certain specimens. Freshly collected and refrigerated NaF-preserved blood produced minimal free morphine, whereas four of five autopsy blood specimens produced free morphine from M3DG. Increased storage time, temperature, and initial degree of putrefaction resulted in greater free morphine generation despite the absence of viable bacteria. Hydrolysis occurring during specimen storage can generate free morphine from M3DG and may result in erroneous conclusions in certifying narcotic deaths. 相似文献