Reinforcing Learning in the Data Communications Course Using a Teleprocessing Line Speed Decision Support System

Two challenges exist in the typical data communications course. First, most traditional students have had very little technical networking experience. Consequently, they lack a practical framework to synthesize all the detail contained in a basic data communications course. Second, the line speed formula taught in many courses is too simplistic to be practical. The formula does not include all the factors it should include such as the impact of noise or overhead, message processing or queuing time, or need to deal with multiple message types and lengths and with peak periods. Consequently, students receive the wrong impression. A great opportunity exists to improve student learning in the data communications class by using a much more complete formula and a method to incorporate the formula into a teleprocessing line speed decision support system. That can also provide the basis for several student projects to reinforce their learning of the many interrelated data communications topics. This paper presents the design of such a teleprocessing line speed decision support system as well as student outcomes in data communications courses

Telecommunications Hardware and Software Systems made in CMEA Countries and Yugoslavia

The telecommunications hardware and software systems used in CMEA (Council of Mutual Economic Assistance) countries and Yugoslavia are a most complex field of investigation. For this reason in this study the following approach has been adopted: Rather than collecting and presenting all CMEA telecommunications hardware and software systems in a directory type of form, which would neither be complete nor fully up to date (even at the time of data collection), a general analysis is given, with sufficient detailed information to make it useful. During the analysis we will discuss in depth the different classes of telecommunications hardware and software systems, their past, present, and potential future. In order to do this, the analysis has to include all major levels of the International Standardization Organization's Open System Interconnection (ISO/OSI) Reference Model--and this is the way we handle the telecommunications hardware and software systems of the CMEA countries and of Yugoslavia

Reliability and security at the dawn of electronic bank transfers in the 1970s-1980s

From a historical perspective, the concept of reliability and computing security in the early 1970s, when electronic data transfer processes were in infancy, is especially interesting in terms of their implications in technological change and the business of banking. The cases of Japan, Spain and Germany, in terms of their national banking networks, provide an interesting field of analysis in terms of the implications that the online data transfer systems had for banking institutions. Concerns about the reliability of the computing processes and digital security were the key factors. These innovations laid the foundation for the advancement of networks and new banking services that would open up unprecedented horizons in what was to become known as service banking

PDA-based system for monitoring electromagnetic signals

The development of a mobile system for receiving, storing, and displaying electromagnetic-signals (EM) at specific frequencies using mobile devices and wireless networks, is of extreme interest, especially when the final means of display is a PDA, a very light and compact handheld device. In the present study, an application is developed for remote monitoring of EM-signals preceding seismic events. The particular advantages and challenges faced when developing such application are explained and future work in this area is presented

Topology design and performance analysis of an integrated communication network

A research study on the topology design and performance analysis for the Space Station Information System (SSIS) network is conducted. It is begun with a survey of existing research efforts in network topology design. Then a new approach for topology design is presented. It uses an efficient algorithm to generate candidate network designs (consisting of subsets of the set of all network components) in increasing order of their total costs, and checks each design to see if it forms an acceptable network. This technique gives the true cost-optimal network, and is particularly useful when the network has many constraints and not too many components. The algorithm for generating subsets is described in detail, and various aspects of the overall design procedure are discussed. Two more efficient versions of this algorithm (applicable in specific situations) are also given. Next, two important aspects of network performance analysis: network reliability and message delays are discussed. A new model is introduced to study the reliability of a network with dependent failures. For message delays, a collection of formulas from existing research results is given to compute or estimate the delays of messages in a communication network without making the independence assumption. The design algorithm coded in PASCAL is included as an appendix

Organizational Data

Organizational data describe central characteristics of organizations, their internal structures and processes as well as their behavior as corporate actors in different social and economic contexts. Firm and enterprise data are the most frequently used type of organizational data, but there is also a growing interest in data on schools, universities, and hospitals in the economic and social science research. In the last several years, there has been a substantial improvement in the accessibility and scientific usability of organizational data from official statistics. However, nonofficial organizational data produced within publicly funded research projects are practically impossible to obtain for secondary analyses. There is no documentation of the existing stock of non-official organizational data, and the methodological standards used for organizational research in Germany are low compared to the standards of international research. Against this background, it is recommended that efforts be focused on documenting and archiving the existing non-official organizational data for secondary analyses and on establishing higher methodological standards within this research field.firms, organizations, methods of organizational research, micro data, secondary analysis

The Effect of Junior High School Teachers' Motivation and Willingness to Change on the Diversity of Their Teaching Methods

This study attempts examine the influence of motivation and willingness of   teachers to change on the diversity of teaching methods. The research question is: What is the influence of junior school teachers' motivations and willingness to change on the diversity of their teaching instructions? The participants of the study are 50 English teachers of Junior High Schools in Northern Israel. The research instruments were three questionnaires. The research’s findings revealed a significant influence of English teachers of Junior High Schools willingness to change on the diversity of teaching methods; the higher the willingness to change, the diversity in teaching modes increases. Another significant effect was also found between the level of teaching motivation and diversity of teaching methods; teachers with high motivation level reported diversification in teaching methods. A final significant effect of level of general motivation and willingness for change was also found; the willingness for change among teachers of high motivation increased. The main research conclusion is that willingness to change, which is connected to motivation, influences the diversity of teaching methods. Therefore, in order to assimilate changes in teachers’ working modes, like diversifying their teaching methods or in any other way, there is a need to encourage and nurture their motivation

United States Air Force Graduate Degrees from 1990 to 2000: A Comparison

Throughout its history, the United States Air Force has been concerned with technical graduate education. In 1947, the Ridenour Report stated the importance and need of Air Force officers with technical graduate degrees. This emphasis has served the Air Force well, but there is concern among senior Air Force leaders that there has been an erosion of these technical skills and graduate education. This research will examine the issues surrounding technical graduate education in the Air Force and will address the possible loss of such technical education. The results of this research provide specific statistical data and analysis on the types and numbers of graduate degrees achieved by Air Force line officers in the years 1990 and 2000. It will discuss the results for all Air Force line officers and will then examine specific Air Force Specialty Codes. This research will enable further investigation into the impact that graduate education will play on the future of the United States Air Force. Based on the data analysis, this study concludes that there has been no significant change in the percentage of overall technical graduate education from 1990 to 2000. There has, in fact, been a slight increase in the percentage of technical graduate degrees in the following career fields: Pilots (1 lXX), Civil Engineers (32EX), Communications and Information Officers (33 SX), and Developmental Engineers (63 AX). All other areas examined showed no statistically significant changes