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International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, Nevada / An IRIG standard flight recorder has been developed that is based on half-inch helical scan technology. The recorder was developed by combining the data channel of existing ground-based recording systems with transport technology used in both flight test and operational fighter aircraft environments. The design goal was to achieve cross play compatibility with the defined IRIG 106.6 tape format. Significant margins were provided in the design to maintain compatibility with tapes recorded in fighter aircraft environments. Operation at up to 50,000 feet, a temperature range of -40EC to +55EC, and vibration sources to Mil Spec 5400T are requirements in this environment. How these technical problems were overcome during the development of this recorder is addressed in this paper.

International Telemetering Conference Proceedings / October 17-20, 1988 / Riviera Hotel, Las Vegas, Nevada / Mission safety and cost-efficiency concerns have resulted in a resurgence of interest in real-time strip chart recorders. But conventional recorder technologies require inordinate maintenance and daily calibration. Attempts at strip chart emulation involving costly dedicated microcomputers and CRT's have failed, because the chart itself is not real-time, a basic requirement. The concept of an inexpensive, direct digital link to a telemetry processing computer (VAX, e.g.) is discussed. A thorough examination of real-time monitoring of critical, non-repeatable data is presented. Objectives: An automated, turn-key telemetry data system. Reduce the routine maintenance required by conventional recording systems; eliminate the need for digital-to-analog converters (DAC's); and improve the efficiency of range personnel and the integrity of recorded data.

International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, Nevada / A synopsis of the very recent evolution of telemetry chart recorders from “closed” chart paper output devices to powerful “open” Data Management Systems. A Data Management System (DMS) is defined as one which incorporates a video screen for waveform preview and monitoring, direct connection of hard or optical disk via SCSI for real-time data archiving, and DR11 digital interfacing. The DMS concept of providing real-time waveform monitoring independent of hard copy recording is discussed, as well as the capabilities of the hard copy recorder. The realities of budget shortfalls makes wholesale system upgrades to eliminate DAC’s entirely difficult at best. These concerns—and a potential remedy: a DMS which accepts any mix of analog and digital waveforms—are reviewed. Objectives: How DMS’s can be integrated with existing telemetry systems, encompass the functionality of conventional recorders and add new capabilities, with an emphasis on how data can be digitally pre-formatted in real-time, simplifying—or even eliminating—post-mission reduction and analysis. A demonstration of how a video display allows real-time trace viewing—a major weakness of conventional thermal array recorders.

International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada / Half inch Super VHS (S-VHS) tape is an exceptional media for recording telemetry instrumentation data. Due to high volume mass production for the commercial and industrial video markets, high quality S-VHS media is available at a low cost. Advances in head technology as well as data path electronics contribute to increased data densities recorded on this media. Present system capabilities of 50,000 bits per inch will soon be replaced with newer technology systems that will record at linear densities up to 100,000 bits per inch.

Injuries involving the nervous system are among the most devastating and life altering of all neurological disorders. The resulting loss of sensation and voluntary muscle control represent a drastic change in the individuals lifestyle and independence. Spinal cord injury affects over two hundred thousand people within the United States alone. While there have been many attempts to develop neural interfaces that can be used as part of a prosthetic device to improve the quality of life of such patients and contribute to the reduction of ongoing health care costs, the design of such a device has proved elusive. Direct access to the spinal cord requires potentially life threatening surgery during which the dura, the protective covering surrounding the cord, must be opened with a resulting high risk of infection. For this reason research has been focussed on the stimulation of and recording from the peripheral nerves in an attempt to restore the functionality that has been lost through spinal cord injury. This thesis is concerned with the current status and limitations of peripheral nerve interfaces that are designed for recording electrical signals directly from the nervous system using a technique called velocity selective recording. This technique exploits the relationship between axonal diameter, which is linked via anatomy to function, and the speed with which the axon conducts excitation. New techniques are developed that improve current methods for identifying and simulating neural signals and power efficient implementations of these methods are presented in modern microelectronic platforms. Results are presented from pioneering experiments in rat and pig that for the first time demonstrate the recording and analysis of the physiological electroneurogram using velocity based methods. New methods are developed that enable the extraction of neuronal firing rates and thus the extraction of the information encoded within the nervous system.

在过去的半个世纪中，戶口（戶籍）制度是影响人们生活机会最重要的社会制度之一，对于能否获得良好的就业机会、医疗、住房，甚至子女教育都是至关重要的决定因素。因此，从农业戶口转为城镇戶口，是一种非常有效的社会上向流动的途径。然而，由于缺乏数据，以往的研究未能评估亲属关系在戶口转换中的作用。依据2008年中国综合社会调查，本文重点考察亲属关系在戶口转换中的作用，将“农转非过程中的亲属关系划分为配偶关系和亲子关系，并考察谁更可能使用这些关系。本研究采用离散时间竞争风险模型，主要探讨家庭出身、教育程度和性别是如何影响不同类型的亲属关系的使用。实证研究结果表明：（1）亲属关系在戶口转换中起到最为重要的角色;（2）父亲的教育和工作单位性质对于采用亲属关系实现戶口转换有很大推动作用，而这主要是通过先让父亲自己得到城镇戶口而实现的;（3）控制了家庭出身后，高中教育对于使用配偶关系有促进作用，主要采用这种关系的是女性，而高职和大学教育则不会影响亲属关系的使用，因为它们本身就是合法的戶口转换渠道;（4）农村妇女更可能通过嫁给一个城镇男性，来获得戶口转换的机会，而大部分的男性则主要通过参军、教育或职业渠道来获得戶口转换;（5）本文还将采用这一性别差异的框架来解决以往戶口转换研究中的一个难题。 / Over the last half century, household registration (hukou) system is perhaps the most important determinants of people’s life chances, access to good jobs, health care, housing and even education for one’s children. Therefore, transforming one’s hukou status from rural to urban is a very effective path to upward social mobility. However, for lack of appropriate data, previous studies have failed to evaluate the role of familial ties in hukou mobility. Drawing on the 2008 Chinese General Social Survey, this paper emphasizes the role of familial ties in hukou mobility, infers from multiple survey questions the important distinction between channels of hukou conversion based on spousal tie and parent-child tie, and examines who are more or less likely to use spousal and parent-child tie. Using the discrete-time competing-risk hazard rate model, this study specifically examines how family origin, educational attainment and gender affect the access to different types of familial-tie-based channels. Empirical findings show that: (1) familial ties play a prominent role in hukou conversion; (2) father’s education and employment at a state work unit facilitate the use of familial ties to achieve hukou conversion, but evidently all due to father’s own attainment of urban hukou in advance; (3) net of the effect of family origin, senior high school education promotes the use of spousal tie, mainly by women, whereas neither vocational school nor college education has significant effects on the use of familial ties, because they are both de jure channels of hukou conversion; (4) rural women are more likely to use marriage to an urban man as a channel for hukou conversion, with signs of status exchange, whereas the majority of men use military, education or employment channels for hukou conversion; (5) the gender-specific framework is then applied to resolve a puzzle of hukou conversion reported in prior literature. / Detailed summary in vernacular field only. / Xiang, Jun. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2013. / Includes bibliographical references (leaves 41-47). / Abstracts also in Chinese.

This paper explores the historical progression of the technological development of records and radio and its impact on popular music. It also includes the production technologies that create recorded music, the development of records, cassettes and CDs, and areas of reproduction that have an association with popular music including the sound technologies of radio, film, television, background music, and the juke-box. This paper is not a cultural or social study, but is primarily an historical account of media technology in music production and delivery. Certain social and cultural consequences and issues are included as background and sidebars to the primary topic. The technology of live performance has been omitted because it alone represents a body of material large enough for an entire paper. Western society now travels through a sea of music emanating from countless hidden sources. Such music delivery systems provide a continuous musical score for most people's personal histories. Sound, fragments of sound, and the very processes by which sound is created and manipulated have become products and commodities. The technology has allowed anyone to participate in the creation and hearing of music. This paper traces the history of the various technologies that, in so many respects, have provided a catalyst for that which is created, and the means by which music is listened to in the 20th Century. With rare exception, each new invention, delivery system, or process has had both supporters as well as detractors. Throughout this paper, both the positive as well as the negative effects of these developments will be explored. / Master of Arts (Hons)