谈专业教师在制作电视教材中的作用

介绍了制作电视教材的过程：首先作好选题工作，并认真书写电视教材脚本及分镜头稿本，然后积极准备并进行电视教材的设计拍摄以及后期制作等项工作。在这一过程中，专业教师的作用不可或缺，同时应与教育技术中心的老师一道努力，才可制作出高质量的电视教材来。     

Three-dimensional quantification of human standing posture

Accurate but simple and inexpensive assessment of human posture is a requirement of many clinicians, yet a system to do this task is not available. Thus the purposes of this study were to design and build a computerized system for the three-dimensional quantification of the human erect standing posture, to assess the reliability of the developed system, and to present parameters to quantify standing posture. Reflective markers were used to highlight 24 body landmarks of 20 male subjects. Each subject stood on a Kistler force plate while a computer captured images from three standard PAL video camera views and the ground reaction force. Three-dimensional photogrammetric techniques were used to recreate the three-dimensional coordinates of the subjects' landmarks and the location of the line of gravity was determined from the force-plate data. It was concluded that the developed three-dimensional videometric method was reliable and that very small deviations of spinal alignment and trunk rotation as well as leg and arm positions could be detected by the system. Furthermore, eight parameters derived from the landmark coordinates provided valid and reliable inter-day measures of posture.     

国外角膜屈光测量技术的发展

角膜是人眼屈光系统的主要部分，同时也是人眼屈光手术的最主要、最直接的作用对象，从而使得角膜测量技术也变得尤其重要。目前国外关于此技术的研究已有了长足的发展，笔者总结近年来的研究资料，对国外角膜屈光测量技术的发展予以简单介绍。     

Atonic Epileptic Drop Attacks Associated with Generalized Spike-and-Slow Wave Complexes: Video-Polygraphic Study in Two Patients

Summary: Purpose: We studied falling manifestations of atonic epileptic drop attacks (AEDA) in 2 patients with cryptogenic epilepsy with myoclonic-astatic seizures.
Methods : Using video-polygraphic examinations. For analysis, we recorded 51 seizures in 1 patient and 18 seizures in the other. The extent of AEDA ranged from collapsing and landing on the buttocks to head nodding only without falling.
Results : Detailed video analysis of the drop attacks, with the patient in standing position, demonstrated the first manifestations to be flexion at the waist and knees, followed by further knee flexion, leading to falling straight down and landing on the buttocks. Ictal polygraphs demonstrated diffuse interruptions of ongoing EMG dkcharges corresponding to the falls, indicating that these attacks are true atonic seizures.
Conclusions : The falling manifestations of AEDA appeared to be characteristic and different from those of tonic drop seizures, which have been described as falling forward with tonic flexion of the hips, upper trunk, and head, as well as abduction or elevation of the arms.     

The use of the SUN group program with high-risk adolescents

American adolescents are at unprecedented risk for psychological and physical harm. Research consistently demonstrates that adolescents' impressionistic decision-making and impulsivity, when coupled with frequent feelings of being isolated and alone, put them at risk to take action (Arffa, 1983; Crumley, 1979; Hoberman & Garfinkel, 1988; McIntire & Angle, 1973; and Shaffer et al., 1988). Prevention of high risk behavior has become imperative. The SUN program, designed by Judy Tellerman, introduces a model for groups in which teens and pre-teens learn to solve problems with the help of an adult leader. The pilot project described in this paper began in 1994 when Rita Schonberg started using the SUN program with consultation from Judy Tellerman. Students from a small alternative high school, who had been identified as high risk for self-destructive behavior, made up the group. They met for ten sessions during study hall. Students practiced going through ten steps when facing their problems. The steps encouraged the students to: 1. recognize that they have a problem and that, indeed, something is bothering them, 2. identify the problem and be curious about what is causing their discomfort, and 3, turn to the group to sort out the problem. The group process encouraged empathy, delay (not rushing to solve a problem before it is understood), brainstorming, and trying out solutions and reporting back to the group. This paper explores the students' developing ability to fortify themselves against impulsive decision-making. The different phases of the group as a whole are examined. Implications for future work on group therapy approach to prevention in light of adolescent development are also discussed.     

Presentation of Creutzfeldt-Jakob disease as acute corticobasal degeneration syndrome.

We provide a brief report with videotape documentation of a possible case of Creutzfeldt-Jakob disease.     

Cortical lesions associated with transient neurological symptoms – not always a matter of cause and effect

The occurrence of transient recurrent stereotypical neurological events mandates the exclusion of an underlying brain lesion. When imaging studies demonstrate the presence of a structural brain lesion, a cause and effect relationship between the two entities is assumed, and the decision for surgical intervention may then follow almost automatically. We describe five patients with transient neurological events suspected as being seizures that were referred for surgery because of an associated structural brain lesion. Video electroencephalographic recordings revealed that the events that brought these patients to neurosurgical attention were non-epileptic seizures. None of these patients underwent surgical intervention, and all were referred for behavioral therapy. Therefore, even in the presence of a confirmed brain lesion, the presenting paroxysmal events may be of a non-organic origin and should not necessarily be assumed to be caused by the concomitantly existing structural abnormality.     

Requirements on resolution of digital imaging equipment in the cardiac catheterization laboratory

Summary We evaluated the requirements on spatial resolution of digital imaging equipment in the cardiac catheterization laboratory. Fifty cinefilms of the heart as the biological object and one film of a lead — ladder — pattern as an objective test were used. The patient films were examined for the visibility of the left ventricular angiogram, coronary arterial tree, coronary artery lesions, branching of septal arteries and the number of septal arteries. All films were viewed three times: with a 625 line TV-system, with a 1249 line TV-system and with a cineprojector. It was found that two application areas with different demands on the spatial and temporal resolution can be distinguished:1) low spatial resolution and high temporal resolution, e.g. left ventriculography; and 2) high spatial resolution and low temporal resolution, e.g. coronary arteriography. For the diagnostic assessment of the state of the coronary system, the spatial resolution provided by the 1249 line TV-system was sufficient. Exceeding this resolution by using cinefilm quality provided no additional diagnostic information. A frame rate lower than 50 frames per second for coronary arteriography seems possible.     

Hardware to hard hats: training workers for action (from offices to construction sites).

A university-based labor education program provides training to unionists, emphasizing the skills needed by workers and their representatives in order to promote their rights to health and safety on the job. The article describes two examples of this training approach. The first example is a training program for video display terminal (VDT) operators which prepares them to take a leadership role in advancing policies to regulate working conditions for VDT users. The second is a program designed to improve the quality of safety, or "tailgate" meetings in the construction industry by promoting an approach that encourages active worker participation in identifying potential hazards and developing solutions. The methodologies used to achieve action-oriented outcomes are described.     

多媒体技术在《临床CT》教学中应用研究

本文研究的是一个基于微机多媒体技术的《临床 Ｃ Ｔ》教学系统。本系统具有图像采集、存贮、显示、播放和计算机辅助教学等功能