Two years' experience with recording equipment

THE PRESIDENTIAL ELECTION AND TRANSITION 1960–1961. Edited by Paul T. David. Washington, D.C.: Brookings Institution, 1961; pp. x+353. $3.75.

THE GREAT DEBATES: BACKGROUND, PERSPECTIVE, EFFECTS. Edited by Sidney Kraus. Bloomington, Ind.: Indiana University Press, 1962; pp. 439. $7.95.

REPORT OF THE COUNTY CHAIRMAN. By James A. Michener. New York: Random House, 1961; pp. 310. $3.95.

SIX CRISES. By Richard M. Nixon. New York: Doubleday, 1962; pp. xvi+459. $5.95.

THE MAKING OF THE PRESIDENT 1960. By Theodore H. White. New York: Atheneum Publishers, 1961; pp. viii+393. $6.95.     

Impedance characteristics for solid Ag/AgCl electrode used as recording electric field generated by vessels in seawater

Ag/AgCl electrode has been prepared using pressed powder techniques. In order to verify the feasibility of this type of electrode used as detecting electric field generated by vessels in seawater, its characteristics of DC resistance, low frequency AC impedance, and receiving impedance in artificial seawater have been studied by polarization measurements, low frequency electrochemical impedance spectra, the open and short circuit cell conditions. The results show that the electrode can keep a low resistance when it responses the weak electrostatic field in seawater. The AC impedance of the electrode decreases as the frequency of the signal increasing. The receiving impedance decreases when the frequency of external field increases too. The valid detection bandwidth is determined by the properties of the impedance and the reactions occurring on the surface of the electrode.     

Representational systems used by graduate students while problem solving in organic synthesis

Graduate students taking a course in synthetic organic chemistry were asked to think aloud while solving several synthesis tasks. Analysis of the protocols indicated that subjects used different types of representations while problem solving. Subjects constructed solutions and communicated them through seven systems: Verbal, Pictorial, Methodological, Principles-Oriented, Literary, Laboratory-Oriented, and Economic. Beyond the Pictorial and Verbal systems, the most often used system was Methodological in nature—subjects believed the purpose of organic synthesis is to apply rules in a proper order until the task is solved. Subjects considered utilizing other systems of representation if they judged their results to be ambiguous when based on the Methodological system.     

Observing and recording behavior

Observing and recording behavior is an important part of the early childhood program. In this article, there are examples of techniques and checklists that teachers and administration can comfortably use. Whether you choose to observe developmental skills or socializing skills, these methods will give you ideas for recording your information.Excerpted fromStaff Orientation in Early Childhood Programs by Barbara O'Sullivan. © 1987 Reprinted by permission of Toys 'n Things Press, 906 No. Dale, St. Paul, MN 55103.     

设区市传统媒体应对网络媒体竞争的思考

随着互联网的快速发展,网络媒体迅速崛起,对广播、电视、报纸等传统媒体形成冲击.作为设区市的传统媒体,处在前有国家级、省部级媒体蚕食,后有新兴网络媒体夹击之中,在话语权、传播速度、虚假信息等方面更是受到网络媒体的挑战.设区市传统媒体应从提高信息附加值、增强内容竞争力、深度挖掘节目等方面有效应对网络媒体的冲击.     

半自动录播系统下精品课程的录制类型分析

从实践的角度,对半自动录播系统下精品课程的录制类型进行了划分和分析,并针对各种类型提供了机位设置的解决办法,并对录制前和录制中需要注意的一些事项做了说明。半自动录播系统下精品课程的录制类型可划分为4种。但在实际的录制过程中,这些类型不可能绝对独立而平行地存在,需要我们根据具体情况综合交叉地加以运用。     

提高“观察细胞质流动”实验观察效率的方法

在指导学生进行“用高倍显微镜观察叶绿体和细胞质流动”的实验过程中,部分学生往往只看到叶绿体,难以观察到细胞质流动的现象。如何提高该实验的观察效率,让全班学生都看到细胞质流动现象？本文总结出以下一些方法：     

基于Java员工上班时间记录系统的设计

员工上班时间记录系统是基于JAVA网络功能的入门系统.员工上班时间记录系统可以为公司的员工和管理者带来很大的方便.因为员工只要自己输入用户名和密码系统,系统的服务端就可以自动记录它的登入时间即上班时间.该系统是由客户端和服务端组成的,用户通过客户端输入自己的用户名和密码传到服务端进行验证.     

论音乐录音中的几点要素

一部音乐录音作品.将会涉及到有关音乐和录音方面的各种问题,如总体风格、旋律、节奏、和声、歌词、配器、乐器、作品结构、演唱演奏、录音设备的品质和混音,这些方面的好坏,都决定着音乐录音作品的整体质量.     

Lecture recording system in anatomy

The literature reports that using Learning Recording Systems (LRS) is usually well received by students but that the pedagogical value of LRS in academic settings remains somewhat unclear. The primary aim of the current study is to document students' perceptions, actual pattern of usage, and impact of use of LRS on students' grade in a dental gross and neuroanatomy course. Other aims are to determine if students' learning preference correlated with final grades and to see if other factors like gender, age, overall academic score on the Dental Aptitude Test (DAT), lecture levels of difficulty, type of lecture, category of lecture, or teaching faculty could explain the impact, if any, of the use of LRS on the course final grade. No significant correlation was detected between the final grades and the variables studied except for a significant but modest correlation between final grades and the number of times the students accessed the lecture recordings (r=0.33 with P=0.01). Also, after adjusting for gender, age, learning style, and academic DAT, a significant interaction between auditory and average usage time was found for final grade (P=0.03). Students who classified themselves as auditory and who used the LRS on average for fewer than 10 minutes per access, scored an average final grade of 16.43 % higher than the nonauditory students using the LRS for the same amount of time per access. Based on these findings, implications for teaching are discussed and recommendations for use of LRS are proposed. Anat Sci Educ 6: 376–384. © 2013 American Association of Anatomists.