3,696 research outputs found
John Deere Tractors and School Reform: Balancing Economies of Scale and Quality of Life
Many school reform reports, many politicians, and typical media coverage attribute today’s reform efforts to the failure of the schools. We need, say critics, to return to the good old days when schools were tough and everybody learned! This essay debunks the Golden Age myth by comparing John Deere tractors to school reform. In the analogy, repeated upgrades of the old two-cylinder motor during the decade of the fifties were associated with the demise of the family farm. The new models were more powerful than the tractors they replaced, but not enough. Eventually, John Deere evolved to the new 4010 series of four and six cylinder power plants. Similarly, schools are getting “bigger” (figuratively, based on higher expectations) in response to the information age economy. Unlike the alleged Golden years, we now expect everyone to graduate and emerge well educated. Like the two-cylinder upgrades, today’s schools are improved over their predecessors, but not enough. The current reform era will likely continue until goals for both high quality and equity for all groups are reached. Meanwhile, economies of scale can have negative effects. For both farms and schools, the bigger is better aspect of economic efficiency must be balanced against quality of life considerations
VALUING WATER QUALITY MONITORING: A CONTINGENT VALUATION EXPERIMENT INVOLVING HYPOTHETICAL AND REAL PAYMENTS
This paper studies the preferences and willingness-to-pay for individuals for volunteer water quality monitoring programs. The study involves supporting water quality monitoring at two ponds in the state of Rhode Island. The paper uses both a hypothetical and a real-payment contingent valuation survey to directly measure individual preferences and willingness-to-pay (WTP) for volunteer water quality monitoring at the two ponds. The overall results of the study suggest that hypothetical WTP is not statistically greater than real WTP, and that the average survey respondent is willing to support water quality monitoring on one of the two ponds. The study also finds that the specified purpose of water quality monitoring and certain socioeconomic characteristics of a respondent significantly affect the respondent's decision to support volunteer water quality monitoring.Environmental Economics and Policy,
Cocoa Farming in Ghana: Emic Experience, Etic Interpretation
This paper develops the tension between emic and etic analysis, recounting the experience of life on a cocoa farm in Ghana, from the perspective of an urban youth with familial connections to the rural community. The dual perspective of living in the city along with frequent visits to and summer sojourns on the farm provided an “outsider’s” perceptions of the rural culture. Yet even these dual emic perspectives were insufficient to bring recognition of the underlying economic realities of cocoa bean production that depended partly on migrant labor. That etic insight came later in the United Kingdom, when studying similar economic systems in Southeast Asia. The story vividly illustrates the necessity of both an emic, insider’s understanding of culture and etic, cross-cultural, scientific insight. Both perspectives are required to have a complete recognition of how the encapsulated beliefs and mores of one’s upbringing depend on the underlying forces of production that drive society. Similarly, the shifting and multilayered levels of what is emic and what is etic in a particular context are addressed in the explication of these personal experiences
Storytelling as Narrativity: Rural Life Through the Prism of Social Tensions
This introductory article provides purpose and rationale for this special issue of Southern Rural Sociology. The remaining six essays represent stories based on the authors’ farm experiences, crafted to explicate the tensions that underlie all of social life. Illustrating the connection between rural life and the world of ideas, the work makes explicit how the often unrecognized contradictions of everyday society are balanced through choices that typically exist at an unconscious, taken-for-granted level. Each author describes a particular dialectic. Collectively, the writers have transformed their narrative to narrativity, the formal imposition of moral purpose on storied form. Although our purpose is primarily pedagogical (making the implicit explicit), the personal essays incorporate the pleasure of narrative and the insight of narrativit
The camerate crinoid Scyphocrinites Zenker in the Upper Silurian or Lower Devonian of New Brunswick, Canada
The mid-Paleozoic Scyphocrinites Zenker has a distal attachment modified into a globular flotation structure and, uniquely for a crinoid, joined the obligate plankton. Such a flotation structure has been found in the Indian Point Formation (Pridolian to Lochkovian) of Flatlands, northern New Brunswick. It is most likely Pridolian (Upper Silurian) based on the primitive morphology. This identification is confirmed by the globular gross morphology, multi-plated calcite structure, age and similarity to coeval fossils from Cornwall, southwestern England
Sinorhizobium Meliloti, A Bacterium Lacking The Autoinducer-2 (AI-2) Synthase, Responds To AI-2 Supplied By Other Bacteria
Many bacterial species respond to the quorum-sensing signal autoinducer-2 (AI-2) by regulating different niche-specific genes. Here, we show that Sinorhizobium meliloti, a plant symbiont lacking the gene for the AI-2 synthase, while not capable of producing AI-2 can nonetheless respond to AI-2 produced by other species. We demonstrate that S. meliloti has a periplasmic binding protein that binds AI-2. The crystal structure of this protein (here named SmlsrB) with its ligand reveals that it binds (2R,4S)-2-methyl-2,3,3,4-tetrahydroxytetrahydrofuran (R-THMF), the identical AI-2 isomer recognized by LsrB of Salmonella typhimurium. The gene encoding SmlsrB is in an operon with orthologues of the lsr genes required for AI-2 internalization in enteric bacteria. Accordingly, S. meliloti internalizes exogenous AI-2, and mutants in this operon are defective in AI-2 internalization. S. meliloti does not gain a metabolic benefit from internalizing AI-2, suggesting that AI-2 functions as a signal in S. meliloti. Furthermore, S. meliloti can completely eliminate the AI-2 secreted by Erwinia carotovora, a plant pathogen shown to use AI-2 to regulate virulence. Our findings suggest that S. meliloti is capable of \u27eavesdropping\u27 on the AI-2 signalling of other species and interfering with AI-2-regulated behaviours such as virulence
Female Superintendents: Historic Barriers and Prospects for the Future
This paper addresses the historic under representation of female superintendents. The primary focus is the legacy of discrimination, in which the barriers to female advancement in a traditionally male field are described. Particular attention is given to three different models of male dominance that have been developed to explain how and/or why women have been excluded from top positions in educational administration. In part two, recognition of the importance of women\u27s contributions to evolving theory in educational administration and a description of the feminine leadership model is offered, wherein women utilize flexible web-like structures, empower others, and prioritize children and learning. In conclusion, future prospects for women in the superintendency are discussed
Female Superintendents: Historic Barriers and Prospects for the Future
This paper addresses the historic under representation of female superintendents. The primary focus is the legacy of discrimination, in which the barriers to female advancement in a traditionally male field are described. Particular attention is given to three different models of male dominance that have been developed to explain how and/or why women have been excluded from top positions in educational administration. In part two, recognition of the importance of women\u27s contributions to evolving theory in educational administration and a description of the feminine leadership model is offered, wherein women utilize flexible web-like structures, empower others, and prioritize children and learning. In conclusion, future prospects for women in the superintendency are discussed
The Effects of Race, Place, Class, and Gender on Instructional Strategies in Kentucky\u27s Seventh Grade Science Classes: Individual and School Level Analyses
This study explored the relationship of student demographics to teaching method in Kentucky’s seventh grade science classrooms for 1997-98, based on performance assessment data (student level N = 21,499; school level N = 264). Students’ perceptions of seven instructional strategies from the KIRIS student questionnaires were placed into three groups: traditional, inquiry-based, and computer. At the student level, these strategies were regressed on race, gender, free/reduced lunch, urbanity of the district, Appalachian status, and Educational Service Region. At the school level, the three approaches were regressed on aggregate school data for these same variables. Findings indicated that demographic factors do affect teachers’ instructional strategies. Student-level results demonstrated numerous small but statistically significant influences on all three instructional approaches. Nearly all demographic effects disappeared when examined at the school level. The strongest finding was that schools with higher percentages of free/reduced lunch students reported more computer usage. Less computer use was reported for schools with more female students. Findings are discussed in light of science instruction, computers, and technological development for the rural south
Temporally Graded Activation of Neocortical Regions in Response to Memories of Different Ages
The temporally graded memory impairment seen in many neurobehavioral disorders implies different neuroanatomical pathways and/or cognitive mechanisms involved in storage and retrieval of memories of different ages. A dynamic interaction between medial-temporal and neocortical brain regions has been proposed to account for memory\u27s greater permanence with time. Despite considerable debate concerning its time-dependent role in memory retrieval, medial-temporal lobe activity has been well studied. However, the relative participation of neocortical regions in recent and remote memory retrieval has received much less attention. Using functional magnetic resonance imaging, we demonstrate robust, temporally graded signal differences in posterior cingulate, right middle frontal, right fusiform, and left middle temporal regions in healthy older adults during famous name identification from two disparate time epochs. Importantly, no neocortical regions demonstrated greater response to older than to recent stimuli. Our results suggest a possible role of these neocortical regions in temporally dating items in memory and in establishing and maintaining memory traces throughout the lifespan. Theoretical implications of these findings for the two dominant models of remote memory functioning (Consolidation Theory and Multiple Trace Theory) are discussed
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