Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Conference

Discipline
Institution
Keyword
Publication Year
Publication
File Type

Articles 129841 - 129870 of 136239

Full-Text Articles in Entire DC Network

Low-Cost Commercial Operations For A Reusable Re-Entry Satellite, Steven Adler, Joseph Dulong, Scott Forest, Yusuf Jafry, Burton Lee Sep 1988

Low-Cost Commercial Operations For A Reusable Re-Entry Satellite, Steven Adler, Joseph Dulong, Scott Forest, Yusuf Jafry, Burton Lee

Small Satellite Conference

This paper presents some results of a follow-on study currently being performed at Stanford University in support of the NASA/Ames Reusable Re-entry Satellite (RRS) concept (see 1987 Utah State Conference paper by J. Givens and R. Schaupp). Whereas previous published work in this area focused on design of an RRS vehicle. This paper shall address RRS mission operations considerations from a low-cost commercial perspective. Specific areas to be discussed include the short-term secondary payload situation, a description of baseline payloads chosen, mission configurations examined, ground tracking network solutions, recovery sites, and cost comparisons between missions. In addition, a brief history …

Go to article

Orbital Payload Recovery, Roland Mayer Sep 1988

Orbital Payload Recovery, Roland Mayer

Small Satellite Conference

The growing focus on orbital manufacture and associated experimentation highlights an increasing need for reliable, low cost recovery of orbital payloads. Simplistic recovery operations and vehicles designed for refurbishment and reuse can provide this desired economy. Based on prior operational experience and present conceptional thinking both are immediately feasible. With the accelerated commercial booster development now in progress, the operational facets of such programs remain the only significant cost elements still requiring definition and resolution. This paper will describe the range of vehicles anticipated for such operations, the economies effecting their operation and restrictions and limitations they impose on planned …

Go to article

The Uosat-C,D & E Technology Demonstration Satellites, N.P. Bean, J.M. Radbone, M.N. Sweeting, J.W. Ward Sep 1988

The Uosat-C,D & E Technology Demonstration Satellites, N.P. Bean, J.M. Radbone, M.N. Sweeting, J.W. Ward

Small Satellite Conference

The University of Surrey (UK) planned a small, inexpensive spacecraft (UoSAT-C) to be launched by NASA on a DELTA launch vehicle as a secondary payload into low-Earth orbit in 1989. This launch has been postponed, but the University has obtained two launch slots on ARIANE. Two spacecraft, UoSATs D & E are currently under construction at The UoSAT Spacecraft Engineering Research Unit at Surrey and they involve collaboration with international experimenters. The spacecraft will carry the majority of the payloads from the postponed UoSAT-C mission. UoSAT-D & E will established by the spacecraft launched NASA, develop further the objectives preceding …

Go to article

Meeting, Wku Board Of Regents Sep 1988

Meeting, Wku Board Of Regents

Board of Regents Documents

Minutes of WKU Board of Regents quarterly meeting regarding the resignation of WKU president Kern Alexander, resolution in honor of Alexander, contract for Thomas Meredith, personnel changes and salaries, enrollment, Kentucky Speech League, recommendation to name the Leonard Brown Agricultural Exposition Center, resolutions in honor of Joseph Cook II, John Palmore and Timothy Todd.

Go to article

Meeting Minutes, Wku Student Government Association Sep 1988

Meeting Minutes, Wku Student Government Association

Student Government Association

Meeting to discuss attendance, procedures, Vote America, elections, committee meetings, committee appointments and campaign regulations.

Go to article

Meeting Minutes, Wku University Senate Sep 1988

Meeting Minutes, Wku University Senate

Faculty Senate

Meeting to discuss department head or chair debate, senate vacancies and health insurance.

Go to article

Fsw: 001.1 - Resolution, Wku University Senate Sep 1988

Fsw: 001.1 - Resolution, Wku University Senate

Faculty Senate

Resolution regarding health insurance and the make up of the university insurance committee.

Go to article

Meeting Minutes, Wku Student Government Association Sep 1988

Meeting Minutes, Wku Student Government Association

Student Government Association

Meeting to discuss retreat, brochures, open positions, committee meetings and committee appointments.

Go to article

Meeting Minutes, Wku University Senate Aug 1988

Meeting Minutes, Wku University Senate

Faculty Senate

Discussion of departmental governance, insurance, general education, faculty salaries, morale and athletics.

Go to article

Meeting, Wku Board Of Regents Aug 1988

Meeting, Wku Board Of Regents

Board of Regents Documents

Minutes of WKU Board of Regents special meeting regarding the nomination of Thomas Meredith as WKU president.

Go to article

Meeting, Wku Board Of Regents Jul 1988

Meeting, Wku Board Of Regents

Board of Regents Documents

Minutes of WKU Board of Regents special meeting regarding the presidential search.

Go to article

Meeting, Wku Board Of Regents Jul 1988

Meeting, Wku Board Of Regents

Board of Regents Documents

Minutes of WKU Board of Regents special meeting regarding presidential search.

Go to article

A Message To Alumni & Friends Of Western Kentucky University, Wku Board Of Regents Jul 1988

A Message To Alumni & Friends Of Western Kentucky University, Wku Board Of Regents

Board of Regents Documents

No abstract provided.

Go to article

Meeting, Wku Board Of Regents Jun 1988

Meeting, Wku Board Of Regents

Board of Regents Documents

Minutes of WKU Board of Regents special meeting regarding presidential search.

Go to article

Meeting, Wku Board Of Regents Jun 1988

Meeting, Wku Board Of Regents

Board of Regents Documents

Minutes of WKU Board of Regents special meeting regarding WKU-Glasgow campus, operating budget, NCAA compliance audit, financial aid audit, use of the repair and maintenance fund and personnel actions and salaries.

Go to article

List Of Conference Participants, Multiple Participants Jun 1988

List Of Conference Participants, Multiple Participants

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

Go to article

Concluding And Banquet Remarks And Speech, Multiple Authors Jun 1988

Concluding And Banquet Remarks And Speech, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

Go to article

Welcome And Opening Remarks, Multiple Authors Jun 1988

Welcome And Opening Remarks, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

Go to article

Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. Iv, Multiple Authors Jun 1988

Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. Iv, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

Go to article

Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. I, Multiple Authors Jun 1988

Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984): Vol. I, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

Go to article

A Low Rise Hospital Development On Restored Opencast Fill, W. M. Kilkenny Jun 1988

A Low Rise Hospital Development On Restored Opencast Fill, W. M. Kilkenny

International Conference on Case Histories in Geotechnical Engineering

An extensive low-rise hospital development has taken place since 1982 on a former opencast coal mining site 30 years after working and restoration. The clay and shale fill some 20 metres deep was placed without systematic compaction. Five separate site investigations have been carried out at different times during the last 20 years and a detailed engineering geological mapping exercise was completed in 1977. Drainage works and the main buildings in Scheme 1 and 2 have been monitored during and after construction. Significant settlements have occurred requiring some remedial work. A surcharge and inundation trial has been undertaken prior to …

Go to article

A Modified Field Infiltrometer Test For Clay Liners, G. S. Laird, W. B. Lozier, A. M. Gurevich Jun 1988

A Modified Field Infiltrometer Test For Clay Liners, G. S. Laird, W. B. Lozier, A. M. Gurevich

International Conference on Case Histories in Geotechnical Engineering

Regulatory agencies are looking more frequently to in situ field hydraulic conductivity tests for the assessment of a liner's compliance to a specified hydraulic conductivity. Most field tests have evaluated hydraulic conductivity by measuring the infiltration rate of the liner. The infiltration rate can be used to arrive at a hydraulic conductivity value if the hydraulic boundary conditions of the test can be identified or if the head loss at different depths can be measured. A test fill of a clay liner was evaluated for its saturated vertical hydraulic conductivity. This paper discusses the use of eight tensiometers to measure …

Go to article

Complementing Radiologic Data With Geology – A Case History, Dennis Mcgrane Jun 1988

Complementing Radiologic Data With Geology – A Case History, Dennis Mcgrane

International Conference on Case Histories in Geotechnical Engineering

The goal in characterizing radioactively contaminated soil is to quantify the degree of contamination and its parameters. A cost effective, small scale characterization is done by performing a surface radiological survey with subsurface data coming from boreholes augered in a tight grid pattern. Confidence in the between-hole extrapolations depends on the grid size. However, at the widely contaminated site in Maywood, New Jersey a grid width of 100 feet was the only economical choice. Accurate contamination parameters were determined despite the wide hole spacings once geologists and health physicists learned how local geologic conditions controlled the contamination's location and extent. …

Go to article

Control Of Uplift From Ground Water, R. V. Sarsby Jun 1988

Control Of Uplift From Ground Water, R. V. Sarsby

International Conference on Case Histories in Geotechnical Engineering

This paper relates to the conversion of a disused water reservoir into a landfill site for domestic and industrial refuse. The reservoir was initially subdivided into four cells (by using earth bunds) and three of the cells have been successfully prepared and filled. The fourth cell is the largest and presents the greatest number of geotechnical problems, the major one being the problem of ensuring that leachate does not escape into the groundwater. The first owner of the site removed natural clay from various parts of the reservoir base to seal the first three cells. In doing so he exposed …

Go to article

Disposal Of Phenolic Waters From A Producer Gas Plant, Dorairaja Raghu, Hsin-Neng Hsieh Jun 1988

Disposal Of Phenolic Waters From A Producer Gas Plant, Dorairaja Raghu, Hsin-Neng Hsieh

International Conference on Case Histories in Geotechnical Engineering

Phenolic waters are generated in a producer gas plant in India. Since harmful environmental effects can result even with low concentrations of phenol in water, its disposal poses a problem. Four options for disposal were considered. One of these options considered involves disposal in a earthen pond situated close to a river. In order to avoid river pollution by possible seepage of phenolic waste, geotechnical aspects have to be considered. For each option, cost analysis is performed. This paper d1scusses as to how the final disposal technique is decided taking into account all the relevant aspects of the problem.

Go to article

Hazardous Waste Disposal Site Hydrogeologic Characterization, S. M. Testa Jun 1988

Hazardous Waste Disposal Site Hydrogeologic Characterization, S. M. Testa

International Conference on Case Histories in Geotechnical Engineering

A major hazardous waste disposal facility near Arlington, Oregon serving the Pacific Northwest, Canada, and Alaska maintains numerous favorable environmental characteristics for siting of a hazardous waste disposal facility. The risk of contamination as a result of potential leakage from a waste management unit via primary pathways to surface water, groundwater or by direct contact and/or ingestion is thus reasonably low. However, these same characteristics which make the site most suitable for hazardous waste disposal often conflict with: 1) the demonstration of the groundwater monitoring system's ability to adequately perform immediate leak detection monitoring as mandated under the Resource Conservation …

Go to article

Implementation Of Remedial Measures To Contain A Pcb Spill, M. D. Huag, J. Atwater, R. B. Knight, P. Kozicki, A. Lissey Jun 1988

Implementation Of Remedial Measures To Contain A Pcb Spill, M. D. Huag, J. Atwater, R. B. Knight, P. Kozicki, A. Lissey

International Conference on Case Histories in Geotechnical Engineering

A large spill of Polychlorinated Biphenols (PCB's) occurred at Federal Pioneer Limited's Regina Plant in 1976. The City of Regina is underlain by a relatively shallow aquifer which supplies a significant proportion of its drinking water. A remedial measures plan was developed to contain this spill within the boundaries of the site and clean up any contamination which had spread to adjacent property. The remedial measures plan developed involved limiting or reversing the normal downward hydraulic gradient. The three principle measures introduced to accomplish this reversal included the construction of a cutoff wall around the site, installation of a thick …

Go to article

Performance Of Lightweight Waste-Impoundment Dikes, Peter J. Bosscher, Tuncer B. Edil Jun 1988

Performance Of Lightweight Waste-Impoundment Dikes, Peter J. Bosscher, Tuncer B. Edil

International Conference on Case Histories in Geotechnical Engineering

The containment dikes of two sludge disposal lagoons were founded on low strength, highly compressible wetland soils in Madison, Wisconsin. These lagoons, constructed in 1942 and 1967 respectively, encompass 130 acres of digested sludge produced at the sewage treatment plant. The dikes have experienced two previous failures in 1970 and 1973. A dike rehabilitation program was initiated in 1976 to prevent additional failures. New dikes were built using wood chips as a lightweight fill. Non-woven synthetic filter fabric was used to prevent soil intrusion into the chips and to provide resistance to lateral spreading. An investigation was initiated in 1984 …

Go to article

A Geological Appraisal Of Slope Instability And Proposed Remedial Measures At Kaliasaur Slide On National Highway, Garwal Himalaya, G. S. Mehrotra, R. K. Bhandari Jun 1988

A Geological Appraisal Of Slope Instability And Proposed Remedial Measures At Kaliasaur Slide On National Highway, Garwal Himalaya, G. S. Mehrotra, R. K. Bhandari

International Conference on Case Histories in Geotechnical Engineering

For over six decades Kaliasaur landslide (Lat. 30° 14' 30" N, Long. 78° 55' 50" E) is a nightmare on the Hardwar-Badrinath road in the Garhwal Himalaya. Located on a sharp bend on the left bank of river Alaknanda, it has emerged as a multi-tier repetitive major landslide, retrogressive in nature. Both surficial and deep seated movements have been monitored. The sliding in the upper layers have been predominantly in the colluvium but where interfaces of quartzite and shale participates, the sliding surfaces have been better defined and discrete. In the present paper, the authors have highlighted the geological, geomorphological …

Go to article

A Novel Low Cost Drum Diaphragm Wall For Landslide Control In The Himalaya, R. K. Bhandari Jun 1988

A Novel Low Cost Drum Diaphragm Wall For Landslide Control In The Himalaya, R. K. Bhandari

International Conference on Case Histories in Geotechnical Engineering

Construction of masonry and reinforced cement concrete .retaining walls are common as a measure of landslide control in the Himalayan region. They are usually very expensive and call for import of cement, steel, stones, sand and water from long distances. The paper spotlights a novel technology of constructing anchored drum diaphragm retaining walls which make use of slope waste material itself for wall construction, saving to the tune of 40 per cent in cost. Utilization of slope debris in turn minimizes hazards due to debris flow, rockfalls, etc. and other mass movements.

Go to article

First Prev Next Last