HUMAN RESOURCE POLICIES FOR NONMETROPOLITAN AMERICA

Labor and Human Capital,

Design, modeling, and analysis of multi-channel demultiplexer/demodulator

Traditionally, satellites have performed the function of a simple repeater. Newer data distribution satellite architectures, however, require demodulation of many frequency division multiplexed uplink channels by a single demultiplexer/demodulator unit, baseband processing and routing of individual voice/data circuits, and remodulation into time division multiplexed (TDM) downlink carriers. The TRW MCDD (Multichannel Demultiplexer/Multirate Demodulator) operates on a 37.4 MHz composite input signal. Individual channel data rates are either 64 Kbps or 2.048 Mbps. The wideband demultiplexer divides the input signal into 1.44 MHz segments containing either a single 2.048 Mbps channel or thirty two 64 Kbps channels. In the latter case, the narrowband demultiplexer further divides the single 1.44 MHz wideband channel into thirty two 45 KHz narrowband channels. With this approach the time domain Fast Fourier Transformation (FFT) channelizer processing capacity is matched well to the bandwidth and number of channels to be demultiplexed. By using a multirate demodulator fewer demodulators are required while achieving greater flexibility. Each demodulator can process a wideband channel or thirty two narrowband channels. Either all wideband channels, a mixture of wideband and narrowband channels, or all narrowband channels can be demodulated. The multirate demodulator approach also has lower nonrecurring costs since only one design and development effort is needed. TRW has developed a proof of concept (POC) model which fully demonstrates the signal processing fuctions of MCDD. It is capable of processing either three 2.048 Mbps channels or two 2.048 Mbps channels and thirty two 64 Kbps channels. An overview of important MCDD system engineering issues is presented as well as discussion on some of the Block Oriented System Simulation analyses performed for design verification and selection of operational parameters of the POC model. Systems engineering analysis of the POC model confirmed that the MCDD concepts are not only achievable but also balance the joint goals of minimizing on-board complexity and cost of ground equipment, while retaining the flexibility needed to meet a wide range of system requirements

Sergeant York: An American Hero

Alvin C. York went out on a routine patrol an ordinary, unknown American doughboy of the First World War. He came back from no-man’s-land a hero. In a brief encounter on October 8, 1918, during the Argonne offensive, York had killed 25 German soldiers and, almost singlehandedly, effected the capture of 132 others. Returning to the United States the following spring, he received a tumultuous public welcome and a flood of offers from businessmen eager to capitalize on his acclaimed feat. But York, true to his character, went quietly back to his home in the Tennessee mountains, where he spent the remainder of his life working to bring schools and other services to those remote valleys where his neighbors lived. In this definitive biography, David D. Lee has firmly established the simple facts of Alvin York’s life, distinguishing them from the myths which have grown up around the man. He has reexamined the sometimes conflicting accounts of the famous exploit, finding in his research a hitherto unknown report of the skirmish from German military archives. Lee goes beyond that single wartime episode, however, to consider its consequences on York’s later life—his efforts, not always successful, to better his mountain community; his involvement in making a motion picture of his life; his difficulties with money and taxes. But Sergeant York is better known as a symbol than as an individual, and in this study Lee connects the man and his life to an American heroic ideal. With his rural background, his refusal to take commercial advantage of his fame, and his simple piety, Alvin York exemplified the traditional values of an agrarian America that was in his own day already receding into the past. He claimed a special place in the hearts of his countrymen, Lee concludes, because his life seemed to show that the virtues of the common man continued to be a vital part of American society.https://digitalcommons.wku.edu/history_book/1009/thumbnail.jp

Design of internal support structures for an inflatable lunar habitat

NASA has a long range goal of constructing a fully equipped, manned lunar outpost on the near side of the moon by the year 2015. The proposed outpost includes an inflatable lunar habitat to support crews during missions longer that 12 months. A design for the internal support structures of the inflatable habitat is presented. The design solution includes material selection, substructure design, assembly plan development, and concept scale model construction. Alternate designs and design solutions for each component of the design are discussed. Alternate materials include aluminum, titanium, and reinforced polymers. Vertical support alternates include column systems, truss systems, suspension systems, and lunar lander supports. Horizontal alternates include beams, trusses, floor/truss systems, and expandable trusses. Feasibility studies on each alternate showed that truss systems and expandable trusses were the most feasible candidates for conceptual design. The team based the designs on the properties of 7075 T73 aluminum. The substructure assembly plan, minimizes assembly time and allows crews to construct the habitat without the use of EVA suits. In addition to the design solutions, the report gives conclusions and recommendations for further study of the inflatable habitat design

Henri Fayol, accounting and control: An environmental reflection

Henry Fayol (1841-1925) was a leading administrator in the French mining and metallurgy industry. After studying at the Lycee at Lyons and the Ecole Nationale Des Mines de Saint Etienne, he was appointed engineer of the Commentry pits of the S.A. Commentry-Fourchambault combine in 1860. By 1888 he had risen to the managing directorship of that company, retiring as chief executive in 1918 but remaining as a director. During his lifetime he was awarded a number of prizes and honors.1 In 1916 he published his now famous Administration Industrielle et Generale-Prevoyance, Organisation, Commandement, Coordination, Controle, in the Bulletin de la Societe de l\u27Industrie Minerale.2 Fayol attempted to develop a teachable theory of general management via a comprehensive set of principles. This theory was intended to demonstrate the benefits of adopting a scientific approach to the management of large organizations and represented the first attempt to outline a general theory of administration

Accounting History Research Methodology Committee: Committee report

I have pleasure in presenting this report on the committee\u27s activities for the year ended August 1986. The development of a comprehensive bibliography of historical research methodology sources continues on schedule