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1988

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Articles 1 - 30 of 990

Full-Text Articles in Engineering

An Evaluation Of Leading Versus Lagging Left Turn Signal Phasing, Joseph E. Hummer, Robert E. Montgomery, Kumares C. Sinha Dec 1988

An Evaluation Of Leading Versus Lagging Left Turn Signal Phasing, Joseph E. Hummer, Robert E. Montgomery, Kumares C. Sinha

JTRP Technical Reports

No abstract provided.


Implementing Ray Tracing Algorithm In Parallel Environment, Tjah Jadi Dec 1988

Implementing Ray Tracing Algorithm In Parallel Environment, Tjah Jadi

Dissertations and Theses

Ray tracing is a very popular rendering algorithm in the field of computer graphics because it can generate highly-realistic images from three-dimensional models. Unfortunately, the computational cost is very expensive. To speed up the rendering process we present both static and dynamic scheduling (balancing) strategies for a multiprocessor system. Hence, the load balancing among the processors is the most important problem in parallel processing. The implementation of the algorithm is based on a modified octree structure.


Adsorption Of Organic Compounds By Microbial Biomass, Ariamalar Selvakumar Dec 1988

Adsorption Of Organic Compounds By Microbial Biomass, Ariamalar Selvakumar

Dissertations

The adsorption of hazardous organic compounds such as phenol, 2-chlorophenol, 2-nitrophenol, chlorobenzene, and ethylbenzene onto two types of inactive microbial biomass (activated sludge and nitrifying bacteria) was studied. The adsorption isotherms could be expressed by the Freundlich adsorption isotherm and were found to be nearly linear over the range of concentrations (50 - 200 mg/1) studied. Desorption studies showed that the adsorption process was partially reversible. Heat of sorption was estimated and indicate that the biosorption process involves a physical rather than a chemical mechanism. The adsorptive capacity of biomass is about two to three orders of magnitude less than ...


Modified Broyden’S Method For Accelerating Convergence In Self-Consistent Calculations, Duane D. Johnson Dec 1988

Modified Broyden’S Method For Accelerating Convergence In Self-Consistent Calculations, Duane D. Johnson

Duane D. Johnson

A modification to Broyden’s method for obtaining stable and computationally efficient convergence in self-consistent calculations is developed and discussed. The method incorporates the advantages of two schemes proposed by Srivastava and by Vanderbilt and Louie without any increase in complexity. Its improvement over their methods is discussed. The present method is compared with two other widely used convergence methods, simple mixing and Anderson’s method, for the case of the disordered binary alloy Ni0.35Fe0.65 on the verge of a magnetic instability and is shown to be much improved in stability and rate of convergence.


Method For Forming A Pallet With Deep Drawn Legs, L. Bogue Sandberg, Bruce A. Haataja, Douglas C. Jurmu, Robert D. Palardy, Frank H. Story, William A. Yates Dec 1988

Method For Forming A Pallet With Deep Drawn Legs, L. Bogue Sandberg, Bruce A. Haataja, Douglas C. Jurmu, Robert D. Palardy, Frank H. Story, William A. Yates

Michigan Tech Patents

A method for molding articles such as pallets from flake-like wood particles mixed with binder, the pallets housing a deck and integral molding legs. A loosely fitted mat of wood flakes is formed by depositing a first plurality of layers of wood flakes onto a supporting surface with a flake aligners provided for causing alignment of those flakes which will form legs of the pallet. A second plurality of layers are formed with a flake aligner provided for causing alignment of flakes which will form the legs of the pallet and in a direction transverse to the direction of alignment ...


Portable Curing Frame, George B. Day V, Larry G. Wells, Timothy D. Smith, Ira J. Ross Dec 1988

Portable Curing Frame, George B. Day V, Larry G. Wells, Timothy D. Smith, Ira J. Ross

Biosystems and Agricultural Engineering Faculty Patents

A portable curing frame is provided particularly adapted for use with an automated tobacco harvester. The curing frame includes a substantially rectangular frame member including a series of slotted tracks, in the form of slotted tubes, specially designed for receiving a notched portion of the plant stalks. The slotted track is substantially continuous and thereby allows infinitely variable spacing between the plants and optimization of ventilation for air curing. Legs are also provided on the portable curing frame. The legs are displaceable between a retracted position allowing storage of the frames and loading of the frames with tobacco plants and ...


Glass Microspheres, D. E. Day, Gary J. Ehrhardt Dec 1988

Glass Microspheres, D. E. Day, Gary J. Ehrhardt

Materials Science and Engineering Faculty Research & Creative Works

A radioactive microsphere for radiation therapy of a mammal comprising a biologically compatible glass material containing a beta or gamma emitting radioisotope distributed substantially uniformly throughout the glass. Advantageously, the radioisotope is produced by irradiation of the microsphere.


Force Distribution In Closed Kinematic Chains, Vijay R. Kumar, Kenneth J. Waldron Dec 1988

Force Distribution In Closed Kinematic Chains, Vijay R. Kumar, Kenneth J. Waldron

Departmental Papers (MEAM)

The problem of force distribution in systems involving multiple frictional contacts between actively coordinated mechanisms and passive objects is examined. The special case in which the contact interaction can he modeled by three components of forces (zero moments) is particularly interesting. The Moore-Penrose Generalized Inverse solution for such a model (point contact) is shown to yield a solution vector such that the difference between the forces at any two contact points projected along the line joining the two points vanishes. Such a system of contact forces is described by a helicoidal vector field which is geometrically similar to the velocity ...


Polymer Science In Romania I: "Petru Poni" Institute Of Macromolecular Chemistry, Iasi, Romania, Otto Vogl, Cristofor I. Simionescu, Ioan I. Negulescu Dec 1988

Polymer Science In Romania I: "Petru Poni" Institute Of Macromolecular Chemistry, Iasi, Romania, Otto Vogl, Cristofor I. Simionescu, Ioan I. Negulescu

Emeritus Faculty Author Gallery

No abstract provided.


U.S.-Japan Seminar: "Synthesis, Properties And Reactions Of Specialty Polymers", Otto Vogl, Hiroshi Sumitomo Dec 1988

U.S.-Japan Seminar: "Synthesis, Properties And Reactions Of Specialty Polymers", Otto Vogl, Hiroshi Sumitomo

Emeritus Faculty Author Gallery

No abstract provided.


Snow And Ice Removal - Driver Information, Herpicc Dec 1988

Snow And Ice Removal - Driver Information, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

This publication offers information about snow and ice removal for drivers.


Acuta Enews December 1988, Vol. 17, No. 12 Dec 1988

Acuta Enews December 1988, Vol. 17, No. 12

ACUTA Newsletters

In This Issue

President's Message

Party Line

User Groups

"Project Eagle" And Favors

University of Kentucky Calls on Voice Automation

Of Mouse & Man


3rd Conference On Senior Engineering Design Projects, College Of Engineering And Applied Sciences Dec 1988

3rd Conference On Senior Engineering Design Projects, College Of Engineering And Applied Sciences

Senior Engineering Design Conference

The 3rd Conference on Senior Engineering Design Projects was held on December 8, 1988 at the College of Engineering and applied Sciences on the Parkview Campus of Western Michigan University. The college sponsors the conference to showcase the work of its graduating seniors, who are required to complete a capstone project that puts into practice what they have learned. Many of the projects are sponsored by business and industry.


Limitation Of Sulfur Dioxide Removal In A Fgd Spray Dryer Using Once Through Slaked Lime, Sambamurty Raju Dantuluri Dec 1988

Limitation Of Sulfur Dioxide Removal In A Fgd Spray Dryer Using Once Through Slaked Lime, Sambamurty Raju Dantuluri

Doctoral Dissertations

The present study discusses the importance of slaking operation and its effect on the removal efficiency in a spray dryer operated FGD system using slaked lime slurry. Laboratory scale slaking experiments were run to look into various characteristics of resulting slurry. Pilot plant tests were made to quantify the effects of different parameters on spray removal efficiency. A vertical tower mill was used to grind calcium hydroxide slurry to attain smaller particle size. X-ray diffraction and SEM techniques were used to visualize the crystallinity and surface aspects of calcium hydroxide slurry. Sorbent particle size and surface area measurements were made ...


On A Taylor Weak Statement For Finite Element Computations In Gas Dynamics, Jin Whan Kim Dec 1988

On A Taylor Weak Statement For Finite Element Computations In Gas Dynamics, Jin Whan Kim

Doctoral Dissertations

The Taylor Weak Statement has been developed as a potential unified approach for approximate computation of fluid flows. It is verified to contain a variety of numerical dissipative methods developed for advection problems by specific identification of its expansion parameters. Generalized Fourier modal analysis has been completed in one space dimension for both semi-and fully-discrete approximations, from which the flux limiter method is herein developed and evaluated for finite element computations. Its application to 1- and 2-dimensional scalar models is investigated for continuous and discontinuous initial value problems, and its use for the Euler equation system of gas dynamics in ...


Energy Considerations In Stock Preparation Refining Modified By Recycling, Rajendra D. Deshpande Dec 1988

Energy Considerations In Stock Preparation Refining Modified By Recycling, Rajendra D. Deshpande

Master's Theses

Experiments were conducted to study the effect of refining on virgin fibers as well as on recycled fibers. Interaction effects of recycling and type of treatment of virgin fibers on characteristics of secondary fiber were studied. A significant reduction in drainage properties of the furnish for both hardwood and softwood pulps were observed. This reduction in properties was found proportional to the amount of refining. It is necessary to achieve required strength properties at higher freeness values, if fibers are to be recycled. This can be done by improvement in uniformity or homogeneity of refining and by gentler and less ...


The Role Of The Peripheral Vascular Bed In Arterial Pulse Wave Propagation, L. S. Baker, F. A. Anderson, Jr., H. B. Wheeler, William W. Durgin Dec 1988

The Role Of The Peripheral Vascular Bed In Arterial Pulse Wave Propagation, L. S. Baker, F. A. Anderson, Jr., H. B. Wheeler, William W. Durgin

Office of the Provost Scholarship

An analytical model was developed to simulate human arterial pulse wave propagation in major arteries. It was verified with an experimental model. The models investigated the effects of the peripheral vascular bed on pressure pulse morphology. The models revealed that the capillary bed in normal humans acts as a high resistance, low reflectance, boundary condition.


A Systematic Transition To Flexible Manufacturing, Sema E. Alptekin, Daniel L. Webber Dec 1988

A Systematic Transition To Flexible Manufacturing, Sema E. Alptekin, Daniel L. Webber

Industrial and Manufacturing Engineering

The transition from basic automation to flexible manufacturing is an expensive and tedious procedure. It requires meticulous planning and almost clairvoyant forecasting to insure that the initial flexibility obtained is sufficient to allow growth and expansion in the future. This paper will suggest a systematic and methodological approach to achieve optimal flexibility and describe the present results of its application to an ongoing system transformation. Conclusions based on existing levels of completion are presented along with identification of critical and non critical flexibility requirements. The considerations and steps taken are summarized in a procedural format which may then be applied ...


U.S.-Japan Seminar: "Synthesis, Properties And Reactions Of Specialty Polymers", Otto Vogl, Hiroshi Sumitomo Dec 1988

U.S.-Japan Seminar: "Synthesis, Properties And Reactions Of Specialty Polymers", Otto Vogl, Hiroshi Sumitomo

Otto Vogl

No abstract provided.


Polymer Science In Romania I: "Petru Poni" Institute Of Macromolecular Chemistry, Iasi, Romania, Otto Vogl, Cristofor I. Simionescu, Ioan I. Negulescu Dec 1988

Polymer Science In Romania I: "Petru Poni" Institute Of Macromolecular Chemistry, Iasi, Romania, Otto Vogl, Cristofor I. Simionescu, Ioan I. Negulescu

Otto Vogl

No abstract provided.


Irish Building Services News Dec 1988

Irish Building Services News

Building Services News

No abstract provided.


Appendix B: Former Transportation Secretaries & Commissioners Commonwealth Of Kentucky, Kentucky Transportation Center Nov 1988

Appendix B: Former Transportation Secretaries & Commissioners Commonwealth Of Kentucky, Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Appendix D: Index Of Participants [1988], Kentucky Transportation Center Nov 1988

Appendix D: Index Of Participants [1988], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Appendix C: State Department Of Public Roads Examination For County Road Supervisor, Kentucky Transportation Center Nov 1988

Appendix C: State Department Of Public Roads Examination For County Road Supervisor, Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Appendix A: Outstanding Road And Street Programs, O. Gilbert Newman Nov 1988

Appendix A: Outstanding Road And Street Programs, O. Gilbert Newman

Kentucky's Annual Forum on Transportation

No abstract provided.


Association Meetings [1988], Kentucky Transportation Center Nov 1988

Association Meetings [1988], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Prospects For Future Transportation, Thomas B. Deen Nov 1988

Prospects For Future Transportation, Thomas B. Deen

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky's Highway System After 1990 -- A Panel Discussion, O. Gilbert Newman, Jack Fish, Kamyar Maboub, David Smith, Glen Kelly, Tom Layman, James C. Codell, Dean Blake, Alan Sparkman Nov 1988

Kentucky's Highway System After 1990 -- A Panel Discussion, O. Gilbert Newman, Jack Fish, Kamyar Maboub, David Smith, Glen Kelly, Tom Layman, James C. Codell, Dean Blake, Alan Sparkman

Kentucky's Annual Forum on Transportation

No abstract provided.


Financing Future Transportation, Merl Hackbart, Kevin Hable, Mike Moloney, Joe Clark Nov 1988

Financing Future Transportation, Merl Hackbart, Kevin Hable, Mike Moloney, Joe Clark

Kentucky's Annual Forum on Transportation

No abstract provided.


Local Roads Clinic, Otto Ingram, James Allen, Patsy Anderson, Tom Layman, W. P. Davenport Nov 1988

Local Roads Clinic, Otto Ingram, James Allen, Patsy Anderson, Tom Layman, W. P. Davenport

Kentucky's Annual Forum on Transportation

No abstract provided.