Analogue and digital linear modulation techniques for mobile satellite

The choice of modulation format for a mobile satellite service is complex. The subjective performance is summarized of candidate schemes and voice coder technologies. It is shown that good performance can be achieved with both analogue and digital voice systems, although the analogue system gives superior performance in fading. The results highlight the need for flexibility in the choice of signaling format. Linear transceiver technology capable of using many forms of narrowband modulation is described

Guidelines for Sharing Recreation and Park Facilities and their Costs

As vacation travel costs increase, people will look for substitute recreation in their home communities. This will create a demand for facilities and services that the tax income of the community will not cover, particularly in rural areas and small towns. Perhaps such communities should investigate the possibility of using school faciliites for recreation and park purpose. Cooperation between school boards and municipalities can supply facilities neither agency along can afford. It can also eliminate costly duplication of facilities and services. About half of the sports and recreation facilities in this country are under the jurisdiction of tax supported schools, but they are open less than half the hours each day and half the day each year. There is a growing recognition of the public’s rights to use the schools at times that do not interfere with normal school programs. Important procedures in developing recreation programs and in establishing joint cooperation between school and recreation park officials are as follows: 1. Establish a joint committee that includes members of the school board, city council, recreation and parks authority, as well as the superintendent of schools, director of parks and recreation, city manager, and the planning director. 2. Hold periodic conferences between city and school officials, both at the policy and administrative levels. 3. Establish a written contract that spells out how the facilities of the agencies involved can be used cooperatively.

Functions of Selected Agencies and Organizations Contributing to Rural Development in Western South Dakota

This material is directed primarily to the large number of people engaged in Rural Development activities in the eleven western counties of South Dakota. It provides information to help local governments and concerned individuals better understand the objectives, functions and kinds of professional and technical services being provided by Federal government agencies, multicounty agencies and organizations working in rural development. Local leaders involved in developmental projects should be encouraged to make use of the programs of government and non-government organizations that can make worthwhile contributions to achieve local goals. The involvement of local people is basic to rural development. Local leadership must be motivated to evaluate local situations and determine what they wish accomplished. The government agencies and rural development groups in the eleven western counties of South Dakota have a responsibility to encourage local leadership, to offer sound counsel and make available each individual agency\u27s capabilities at the proper time and in an appropriate manner. Each agency and organization discussed in this material has been given the opportunity to review their section

Economic and Managerial Characteristics of the Private Camping Industry in the Black Hills and Badlands of South Dakota

The private camping industry in the Black Hills and Badlands began in the late 1950’s. There is still little information available from which present and potential campground operators can make sound management decisions. Many people buy or develop a camping firm with little or no past experience in the business. After a few years, they discover that they are unhappy, and are not realizing an acceptable rate of return on their investment. They sell their camping facilities, and a high turnover in campground ownership results. During the last two weeks in May, June, and part of July 1973, a stratified random sampling of private campground operators was made in the Black Hills and Badlands of South Dakota. The sample was drawn from the list of 66 campgrounds in operation during the 1972 season. Only campgrounds with 20 or more campsites were included. The stratification was based on the number of developed campsites per campground. All campgrounds having 100 campsites or more were surveyed, while 60 percent of those having 50-99 campsites and 40 percent of all campgrounds with 20-49 campsites were surveyed. The field enumerator used a personal interview procedure