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The Ahaggar Twareg are herders of camels and small‐stock who live in the desert of southern Algeria. Their society is divided into categories of noblemen, tributaries and slaves. This article, which deals with the colonial and pre‐colonial period, demonstrates how among the two first mentioned classes, male supremacy over women builds upon men's control over the process that create exchange‐value rather than use‐value. The author also describes how the gender‐based and class‐based forms of labour division interlock. 相似文献
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Television transmission of diagnostic and educational information can help to improve specialized medical care in remote and underserviced areas. This paper describes a pilot study in which the Canadian satellite Anik-B was used to link the James Bay area in northern Quebec with two large Montreal teaching hospitals. Broad-band real-time television was well suited for tele-education and teleconsultation activities. A much less costly method, using narrow-band slow-scan television, was also examined, but it requires improvements. The technology of telemedicine is in place, but its future use is impeded by the prohibitive costs of operating an efficient two-way broad-band television system for several remote health care sites. A solution to this problem may be an intermediate-band system combining some of the low-cost features of narrowband slow-scan television with the interactive high-resolution advantages of broad-band real-time television. 相似文献