Using digital images of the zebra finch song system as a tool to teach organizational effects of steroid hormones: a free downloadable module     

Grisham W  Schottler NA  McCauley LM  Pham AP  Ruiz ML  Fong MC  Cui X 《CBE life sciences education》2011,10(2):222-230

Zebra finch song behavior is sexually dimorphic: males sing and females do not. The neural system underlying this behavior is sexually dimorphic, and this sex difference is easy to quantify. During development, the zebra finch song system can be altered by steroid hormones, specifically estradiol, which actually masculinizes it. Because of the ease of quantification and experimental manipulation, the zebra finch song system has great potential for use in undergraduate labs. Unfortunately, the underlying costs prohibit use of this system in undergraduate labs. Further, the time required to perform a developmental study renders such undertakings unrealistic within a single academic term. We have overcome these barriers by creating digital tools, including an image library of song nuclei from zebra finch brains. Students using this library replicate and extend a published experiment examining the dose of estradiol required to masculinize the female zebra finch brain. We have used this library for several terms, and students not only obtain significant experimental results but also make gains in understanding content, experimental controls, and inferential statistics (analysis of variance and post hoc tests). We have provided free access to these digital tools at the following website: http://mdcune.psych.ucla.edu/modules/birdsong.  相似文献   

Improving graduate education to support a branching career pipeline: recommendations based on a survey of doctoral students in the basic biomedical sciences   总被引：1，自引：0，他引：1  

Fuhrmann CN  Halme DG  O'Sullivan PS  Lindstaedt B 《CBE life sciences education》2011,10(3):239-249

Today's doctoral programs continue to prepare students for a traditional academic career path despite the inadequate supply of research-focused faculty positions. We advocate for a broader doctoral curriculum that prepares trainees for a wide range of science-related career paths. In support of this argument, we describe data from our survey of doctoral students in the basic biomedical sciences at University of California, San Francisco (UCSF). Midway through graduate training, UCSF students are already considering a broad range of career options, with one-third intending to pursue a non-research career path. To better support this branching career pipeline, we recommend that national standards for training and mentoring include emphasis on career planning and professional skills development to ensure the success of PhD-level scientists as they contribute to a broadly defined global scientific enterprise.  相似文献   

Medical students' attitudes toward the anatomy dissection room in relation to personality     

Plaisant O  Courtois R  Toussaint PJ  Mendelsohn GA  John OP  Delmas V  Moxham BJ 《Anatomical sciences education》2011,4(6):305-310

Assessment of the personalities of medical students could enable medical educators to formulate strategies for the best development of academic and clinical competencies. In this article, we focus on the experience of students in the anatomy dissecting room. While there have been many attempts to evaluate the emotional responses of medical students to human cadaveric dissection, there has been no investigation into how different personality traits affect the responses. The main hypothesis tested was that there is a relationship between personality traits and attitudes toward the dissection room. For the present study, a group of French medical students (n = 403; mean age 21.3 ± 1.6; 65.3% female) completed a "Big Five" personality inventory and a questionnaire to assess their attitudes in regard to human dissection. The findings are consistent with our hypothesis, in that we found a relationship between reporting anxiety and four of the "Big Five" dimensions (all except openness). The rated level of anxiety was positively correlated with negative affectivity, more strongly at the beginning than at the end of the course. There were significant gender differences in attitudes toward dissection. The findings are discussed in relation to the possibility of preparing students for the dissecting room experience and also in relation to the students' understanding of mortality issues.  相似文献   

Embedded programming and real-time signal processing of swimming strokes   总被引：2，自引：1，他引：1  

T. Le Sage  A. Bindel  P. P. Conway  L. M. Justham  S. E. Slawson  A. A. West 《Sports Engineering》2011,14(1):1-14

The research outlined in this paper was conducted to allow real-time processing, transmission and presentation of data to swimming coaches and subsequently their swimmers in a training environment, focused on providing information relevant to strokes in free swimming. This was achieved using a wearable wireless sensor and embedded programming techniques, using accelerations involved in the swimming stroke to provide relevant features for coaches. Current methods used do not offer real-time response to coaches, which results in the lack of real-time feedback and significantly increased post-session analysis time. Filtering and signal processing algorithms are described here, which allow real-time data analysis to be embedded within a wireless sensor node. The system significantly reduces the time for processing acquired data and has delivered a novel monitoring device suitable for operation within the harsh environment of the pool.  相似文献   

Three-dimensional kinematic analysis of the golf swing using instantaneous screw axis theory,Part 2: golf swing kinematic sequence     

Alessandro Vena  Dave Budney  Tom Forest  Jason P. Carey 《Sports Engineering》2011,13(3):125-133

A number of recent studies have measured the extent and timing of segment rotation during the golf swing. A promising technique, instantaneous screw axis (ISA) theory, could provide a better expression of segment rotation. In Part 1 of this two-part study, the objectives are to identify the ISA of the pelvis, shoulders and left arm during the downswing, compute segment angular velocity relative to that segment’s ISA and verify that ISA theory is a valid tool to analyse segment rotation during the golf swing. Results indicate that for all subjects, at least 71% of marker velocity is a result of rotation about their respective ISA, when averaging results over the duration of the downswing, confirming that motion is primarily rotational. Furthermore, ISA position and orientation of each segment approaches, on average, the expected gross axis of rotation, confirming that motion about the ISA is representative of joint motion.  相似文献   

足球运动员整体训练系统基础     

B.Π古巴  A.B.列克沙科夫 《首都体育学院学报》2011,23(1):1-5

对足球运动员在长期训练过程中身体准备的综合体系进行了分析。长期的研究结果表明,足球运动训练可以被划分为4个方面:1)单纯性身体活动的使用,2)不同目标训练过程的交替使用,3)较小训练周期固定结构的保留并作为训练过程的基础,4)专门性推动能力的有序发展。这4个方面可以有效地解决足球运动员全面身体准备的问题。  相似文献   

武举制度的演绎     

付旭辉  林友标 《搏击·武术科学》2011,8(11):39-41,69

我国历史上的武举肇始于唐,发展于宋,衰亡于清,期间虽多次更迭,却也延续了1200年之久。文章借助史籍资料的分析,在参考今人对武举研究成果的基础上,对武举考试内容和方法的演变,以及其存在的意义进行深入分析,以期对古代的武举有一个更加清晰的认识。  相似文献   

两届亚运会见证中国体育之路     

付芳 《搏击·武术科学》2011,(7):12-14

回顾和梳理两届亚运会与中国的这二十年,文章通过对比北京亚运会和广州亚运会,可以从历史背景、官方筹备、竞技体育理念、赞助结构、民众参与和民众心态等多方面看到国家的成长和体育逐渐强大的历程。  相似文献   

中华武学与中医经络体系     

黄宇琨  黄宇琛  邱氟  李江  陈雅玲  黄瑞华 《搏击·武术科学》2011,(12):24-25

中华武学的理论根基是中医学经络学说,它们之间可以起到相互促进的作用,应加强研究中华武学与中医学经络学说的关系,促进中华武学和中医运动学的发展,以求培养高层次人才。  相似文献   

我国公共借阅权研究论文的统计分析     

邹盘江  傅文奇 《山东图书馆季刊》2011,(1):22-24,56

运用文献计量学的方法,从研究论文的年代分布、来源期刊、核心作者和内容主题等角度,对1993-2010年度我国公共借阅权研究论文进行分析,以期为我国公共借阅权研究提供参考。  相似文献