Packet selective macroscopic diversity based on bus contention for local area radio networks

Computer programs that radio amateurs use in their packet radio networks give various opportunities in simulating real data communication systems. Such systems include radio-relay networks of digital repeaters that operate in cities or in rural and remote locations, email servers that handle amateur radio messaging and file exchange, and a variety of end-user stations at home or work. This chapter summarizes the results of recent experiments in network simulations by using amateur radio software in a local area network. We tested the main features of those amateur radio programs and their repercussions to the functionality of simulated networks and to the comfort and satisfaction in average network participants. Described tests help practitioners, students, and teachers in computer science and communication technologies, in implementing amateur radio within the existing computer networks and in planning and using telecommunication systems without making any investment in hardware infrastructure.

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Idle signal multiple-access (ISMA) scheme for terrestrial packet radio networks

Electrical Engineering in Japan ◽

10.1002/ecja.4400641009 ◽

1981 ◽

Vol 64 (10) ◽

pp. 66-74 ◽

Cited By ~ 4

Author(s):

Kaiji Mukumoto ◽

Akira Fukuda

Keyword(s):

Multiple Access ◽

Radio Networks ◽

Packet Radio Networks ◽

Packet Radio

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Local-area networks

AccessScience ◽

10.1036/1097-8542.388550 ◽

2015 ◽

Keyword(s):

Local Area Networks ◽

Local Area

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Strathnet—a local area network

Software & Microsystems ◽

10.1049/sm.1981.0007 ◽

1981 ◽

Vol 1 (1) ◽

pp. 21 ◽

Cited By ~ 7

Author(s):

David Hutchison ◽

Doug Shepherd

Keyword(s):

Local Area Network ◽

Local Area ◽

Area Network

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A Local Area Network for Medical Research; Planning, Realization and Experience

Methods of Information in Medicine ◽

10.1055/s-0038-1634811 ◽

1991 ◽

Vol 30 (01) ◽

pp. 53-64 ◽

Cited By ~ 3

Author(s):

R. Schosser ◽

C. Weiss ◽

K. Messmer

Keyword(s):

Medical Research ◽

Word Processing ◽

Local Area Network ◽

Local Area ◽

Area Network ◽

Test Installation ◽

Cost Performance ◽

The Public ◽

On Line ◽

The University

This report focusses on the planning and realization of an interdisciplinary local area network (LAN) for medical research at the University of Heidelberg. After a detailed requirements analysis, several networks were evaluated by means of a test installation, and a cost-performance analysis was carried out. At present, the LAN connects 45 (IBM-compatible) PCs, several heterogeneous mainframes (IBM, DEC and Siemens) and provides access to the public X.25 network and to wide-area networks for research (EARN, BITNET). The network supports application software that is frequently needed in medical research (word processing, statistics, graphics, literature databases and services, etc.). Compliance with existing “official” (e.g., IEEE 802.3) and “de facto” standards (e.g., PostScript) was considered to be extremely important for the selection of both hardware and software. Customized programs were developed to improve access control, user interface and on-line help. Wide acceptance of the LAN was achieved through extensive education and maintenance facilities, e.g., teaching courses, customized manuals and a hotline service. Since requirements of clinical routine differ substantially from medical research needs, two separate networks (with a gateway in between) are proposed as a solution to optimally satisfy the users’ demands.

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A Court in Decline? Examining the Regality Court Records of Melrose, Roxburghshire, 1657–84

Journal of Scottish Historical Studies ◽

10.3366/jshs.2020.0284 ◽

2020 ◽

Vol 40 (1) ◽

pp. 1-16

Author(s):

Vivienne Dunstan

Keyword(s):

Seventeenth Century ◽

Local Community ◽

Local Population ◽

Local Area ◽

Vital Role ◽

Local Communities ◽

Court Records ◽

Seminal Work

McIntyre, in his seminal work on Scottish franchise courts, argues that these courts were in decline in this period, and of little relevance to their local population. 1 But was that really the case? This paper explores that question, using a particularly rich set of local court records. By analysing the functions and significance of one particular court it assesses the role of this one court within its local area, and considers whether it really was in decline at this time, or if it continued to perform a vital role in its local community. The period studied is the mid to late seventeenth century, a period of considerable upheaval in Scottish life, that has attracted considerable attention from scholars, though often less on the experiences of local communities and people.

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