排序方式： 共有31条查询结果，搜索用时 15 毫秒
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Linda Serra Hagedorn William Maxwell Philip Rodriguez Dennis Hocevar James Fillpot 《Community College Journal of Research & Practice》2013,37(7):587-598
This study investigated differences in peer and student?faculty relationships of male and female community college students. Men reported more frequent participation in college activities, whereas women reported more frequent involvement in less formal activities such as studying with other students. Women had less difficulty than men meeting and making friends. For both men and women, little student?faculty interaction outside the classroom was reported. 相似文献
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Linda Serra Hagedorn Jaime Lester Scott J. Cypers 《Community College Journal of Research & Practice》2013,37(3):240-255
While community colleges serve as a postsecondary entry point for many “at-risk” students, not many who enroll will be ready or able to participate in college level courses on entry. Statistically, large numbers of community college students require college remediation, and only a handful are able to successfully emerge from the remediation pipeline. Many students find mathematics the most challenging course sequence and frequently report high levels of math anxiety and lower completion rates. Using population data from a large urban district in a western state, this study examined the impact of course grades on subsequent grades within math courses. 相似文献
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Linda Serra Hagedorn Hye Sun Moon Scott Cypers William E. Maxwell Jaime Lester 《Community College Journal of Research & Practice》2013,37(3):223-242
ABSTRACT In this article, the authors introduce a novel way, using the metaphor of a baseball game, to evaluate and measure community college student progress for those whose stated goal is to transfer to a 4-year institution and, ultimately, earn a bachelor's degree. The proposed framework of “the Transfer Game” is an outgrowth of the Transfer and Retention of Urban Community College Students (TRUCCS) project, which is a longitudinal study of 5,000 community college students from the 9-campuses of the Los Angeles Community College District. The goal of the project is to explain how the “all-American game” provides a method to measure, comprehend, and visualize student progression, and identify the factors that predict both success and barriers. The framework provides a scholarly comparison of the all-American game of baseball to the All-American invention of the community college. 相似文献
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Cara Young Kester Rozario Christophe Serra Laura Poole-Warren Penny Martens 《Biomicrofluidics》2013,7(4)
Biosynthetic microspheres have the potential to address some of the limitations in cell microencapsulation; however, the generation of biosynthetic hydrogel microspheres has not been investigated or applied to cell encapsulation. Droplet microfluidics has the potential to produce more uniform microspheres under conditions compatible with cell encapsulation. Therefore, the aim of this study was to understand the effect of process parameters on biosynthetic microsphere formation, size, and morphology with a co-flow microfluidic method. Poly(vinyl alcohol) (PVA), a synthetic hydrogel and heparin, a glycosaminoglycan were chosen as the hydrogels for this study. A capillary-based microfluidic droplet generation device was used, and by varying the flow rates of both the polymer and oil phases, the viscosity of the continuous oil phase, and the interfacial surface tension, monodisperse spheres were produced from ∼200 to 800 μm. The size and morphology were unaffected by the addition of heparin. The modulus of spheres was 397 and 335 kPa for PVA and PVA/heparin, respectively, and this was not different from the bulk gel modulus (312 and 365 for PVA and PVA/heparin, respectively). Mammalian cells encapsulated in the spheres had over 90% viability after 24 h in both PVA and PVA/heparin microspheres. After 28 days, viability was still over 90% for PVA-heparin spheres and was significantly higher than in PVA only spheres. The use of biosynthetic hydrogels with microfluidic and UV polymerisation methods offers an improved approach to long-term cell encapsulation. 相似文献
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AN INVESTIGATION OF CRITICAL MASS: The Role of Latino Representation in the Success of Urban Community College Students 总被引：3，自引：0，他引：3
Linda Serra Hagedorn Winny Chi Rita M. Cepeda Melissa McLain 《Research in higher education》2007,48(1):73-91
The community college has historically functioned as a primary access point to postsecondary education for Latino students.
This study, an investigation conducted through an analysis of the Transfer and Retention of Urban Community College Students
(TRUCCS) project, focuses on Latino students enrolled in urban “minority-majority” community colleges, where Latino students
have a high representation. The specific interest of this research is the role and effect of the level of representation of
Latino community college students on their academic outcomes. The relationship between the level of representation of Latinos,
and the levels of academic success are analyzed in concert with other variables, such as, the level of representation of Latino
faculty on campus, student age, attitude, academic integration, English ability and aspiration. Findings indicate a relationship
between academic success of Latino community college students and the proportion of Latino students and faculty on campus.
The findings thus suggest that a critical mass of Latinos may be a positive influence encouraging “minority” students to higher
academic performance. 相似文献
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Lamberti F Luni C Zambon A Andrea Serra P Giomo M Elvassore N 《Biomicrofluidics》2012,6(2):24114-2411413
Miniaturization in biological analyses has several advantages, such as sample volume reduction and fast response time. The integration of miniaturized biosensors within lab-on-a-chip setups under flow conditions is highly desirable, not only because it simplifies process handling but also because measurements become more robust and operator-independent. In this work, we study the integration of flow amperometric biosensors within a microfluidic platform when analyte concentration is indirectly measured. As a case study, we used a platinum miniaturized glucose biosensor, where glucose is enzymatically converted to [Formula: see text] that is oxidized at the electrode. The experimental results produced are strongly coupled to a theoretical analysis of fluid dynamic conditions affecting the electrochemical response of the sensor. We verified that the choice of the inlet flow rate is a critical parameter in flow biosensors, because it affects both glucose and [Formula: see text] transport, to and from the electrode. We identify optimal flow rate conditions for accurate sensing at high time resolution. A dimensionless theoretical analysis allows the extension of the results to other sensing systems according to fluid dynamic similarity principles. Furthermore, we developed a microfluidic design that connects a sampling unit to the biosensor, in order to decouple the sampling flow rate from that of the actual measurement. 相似文献
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在2003年的11月号上,本刊曾经发表《1973：女权叙事》一文,那一年正是比利·简·金和博比一里格斯性别大战30周年纪念,美国举行了盛大的纪念活动,无疑,那是一场改变了网球运动的重要比赛,也是女子网球运动一个重要的里程碑,为此好菜坞还拍过一部电影《当金击败博比时》。实际上,那场伟大比赛台前幕后的故事也不是那一篇文章所能说清的,随着时间的推移,性别大战丰富的社会内涵慢慢彰显出来,今天我们已经见证了太多女子赛事的精彩,那个故事的魅力其实是永恒的。 相似文献
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Wage equity and female faculty job satisfaction: The role of wage differentials in a job satisfaction causal model 总被引：2，自引：1，他引：2
Linda Serra Hagedorn 《Research in higher education》1996,37(5):569-598
The present study examined the role of female/male wage differentials in a model of job satisfaction. Female/male wage differentials were initially derived in a manner designed to eliminate much of past discriminatory practices. Subsequently, wage differentials were incorporated in a causal model to predict multiple aspects of academic job satisfaction for female faculty. It was hypothesized that the magnitude of the gender-based wage differential not only affected global job satisfaction but also intentions to remain in the academy, perceived stress level, perceptions of collegiality, and perception of the institution among female faculty. The findings indicated that as gender-based wage differentials increased, global job satisfaction of female faculty decreased. This significant effect was manifested predominantly through faculty perceptions of the institution. 相似文献
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Amaury Nora Alberto Cabrera Linda Serra Hagedorn Ernest Pascarella 《Research in higher education》1996,37(4):427-451
The results of the study indicated that institutional experiences, academic achievement, and environmental pull factors contributed the most to persistence decisions. Furthermore, analyses revealed that differences in the effects of these factors for different ethnic and gender groups were important in explaining persistence decisions. No precollege factors (educational aspirations, prior academic achievement, attitudes toward learning, and support and encouragement to attend college) were found to improve the overall fit of the models for any of the groups in the study. For minorities, the biggest detrimental effects on dropout behavior were derived from pull factors in the form of family responsibilities and working off-campus. No significant positive effects from informal and formal interactions with faculty, close personal relationships with peers, and academic experiences during their first year in college were found to negate the large negative influences from the pull factors. For females, the most significant positive effect on college persistence came from mentoring experiences in the form of nonclassroom interactions with faculty. 相似文献