Networks and problem recognition: advancing the Multiple Streams Approach

This paper responds to recent calls for more theoretically driven advancements of the Multiple Streams Approach (MSA). It does so by bringing networks theorizing into dialogue with the MSA; highlighting the inclusionary and exclusionary power of networks for determining problem frames and issue recognition. Subsequently, the paper argues that the addition of networks provides a clearer articulation of the role of institutions in steering problem stream processes, which have often been neglected within the MSA at the expense of a focus on agency. The paper puts forward two propositions. The first is that an issue is more likely to be recognised as a problem if it is considered compatible with the ‘appreciative system’ of the network's dominant coalition. The second proposition is that the more organisations a network consists of and the more varied these organisations are, the more likely it is that the dominant coalition alters a condition’s category if there are changes in the problem stream. These propositions are explored through a comparative analysis of recognition of quality of life as a problem in two local level transport sector networks in the UK. Support for these propositions in the findings suggest that the introduction of networks into the MSA can reduce ambiguity and therefore fortuity in relation to problem recognition; second, that the power of the policy entrepreneur can be facilitated or constrained by the institutional context; and third, that comparing multiple issues and their interactions is important for further advancement of the MSA.     

What Levels of Racial Diversity Can Be Achieved with Socioeconomic‐Based Affirmative Action? Evidence from a Simulation Model

This paper investigates to what extent socioeconomic status (SES)‐based affirmative action in college admissions can produce racial diversity. Using simulation models, we investigate the racial and socioeconomic distribution of students among colleges under the use of race‐ or SES‐based affirmative action policies, or targeted, race‐based recruitment policies. We find, first, that neither SES‐based affirmative action nor race‐targeted recruiting on their own produce levels of racial diversity achieved by race‐based affirmative action. However, the two policies in combination, although likely expensive, may yield racial diversity comparable to race‐based affirmative action. Second, the use of affirmative action policies by some colleges reduces the diversity of similar‐quality colleges without such policies. Third, the combination of SES‐based affirmative action and race recruiting results in fewer academically‐overmatched Black and Hispanic students than under race‐based affirmative action, but the schools that use both also see a reduction in the academic achievement of enrolled students.     

Comparison of motor oils using high-temperature gas chromatography-mass spectrometry

The analysis of motor oils has wide applications in the forensic science field from comparing lubricants transferred between an automobile and a victim or crime scene to differentiating the compositions of plastic explosives. In this study, 40 unused motor oils were analyzed and compared by high-temperature gas chromatography-mass spectrometry to determine the potential for oil individualization. Oil samples were also collected from the crankcase dipsticks of 30 cars. Twenty-six of these oils could be differentiated from each other based on visual comparisons of the unresolved envelope (baseline rise due to incomplete separation) and the resolved hydrocarbons in the raw total ion chromatograms (TICs) and smoothed TIC data. Four of these oils were analyzed as unknowns and were correctly related to the corresponding vehicle. The use of extracted ion profiles (EIPs) was explored as a means to further discriminate between the indistinct samples based on the polycyclic aromatic hydrocarbon (PAH) content. The research discussed in this paper demonstrated that differentiation of motor oils was possible by examining the TIC, smoothed TIC, and EIP data.     

Developing a quantitative extraction technique for determining the organic additives in smokeless handgun powder.

Compositional analysis of the organic additives in smokeless handgun powder can provide forensic information to associate known and questioned samples. A reliable method for the quantitative extraction of smokeless powder additives would strengthen these measurements. To achieve quantitative recovery, both supercritical fluid extraction (SFE) and ultrasonic solvent extraction (USE) were evaluated as candidate techniques. Following a detailed evaluation of the solvent choice, the recovery of spiked additive compounds, and the effect of the powder matrix, a reliable USE technique was developed. When quantitative USE recovery of the target analytes, nitroglycerin (NG), diphenylamine (DPA), and ethyl centralite (EC), is coupled with additive measurement by micellar capillary electrophoresis (CE), compositional information can be obtained in less than 1 h.     

Brown Fades: The End of Court‐Ordered School Desegregation and the Resegregation of American Public Schools

In this paper, we investigate whether the school desegregation produced by court‐ordered desegregation plans persists when school districts are released from court oversight. Over 200 medium‐sized and large districts were released from desegregation court orders from 1991 to 2009. We find that racial school segregation in these districts increased gradually following release from court order, relative to the trends in segregation in districts remaining under court order. These increases are more pronounced in the South, in elementary grades, and in districts where prerelease school segregation levels were low. These results suggest that court‐ordered desegregation plans are effective in reducing racial school segregation, but that their effects fade over time in the absence of continued court oversight.     

The rise and decline of China's export processing zones

Accepting the Grindle/Thomas argument that developing states enjoy a high degree of autonomy, this article takes a case study approach to analyze the dynamics of Chinese foreign economic policy. The article posits that contending elites coalesced around particular visions of economic development, which have been the major variable affecting the Chinese export processing zone (EPZ) policy. Thus the current decision to rescind SEZ preferences is based on the elites’ decision to ‘deepen’ China's outwardly‐oriented development.     

Lessons from New York City's Small Schools of Choice about High School Features that Promote Graduation for Disadvantaged Students

The present paper uses a rich dataset based on naturally-occurring lotteries for 68 new small non-selective high schools in New York City, which we refer to as small schools of choice (SSCs), to address two related questions: (1) What high school features are promising levers for increasing graduation rates for disadvantaged students? and (2) What high school features helped to produce SSCs’ positive impacts on graduation rates? Our findings provide suggestive evidence that school leadership quality, teacher empowerment, teacher mutual support, teacher evaluation and feedback, teacher professional development, data-driven instruction, teacher/parent communication, academic rigor, personalized learning, and teacher/student respect are promising levers for increasing graduation rates for disadvantaged students. Our findings also provide suggestive evidence that many of these school features explain part of the total average SSC effect on graduation rates, although most of this average effect remains unexplained. Lastly, our findings indicate that SSCs are clearly distinguishable from their counterfactual counterparts in terms of school features that were emphasized by SSC funders.