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Articles 1771 - 1800 of 2344

Full-Text Articles in Other Engineering

Using Matlab To Illustrate The 'Phenomenon Of Aliasing', Sol Neeman, Ph.D. Jan 1995

Using Matlab To Illustrate The 'Phenomenon Of Aliasing', Sol Neeman, Ph.D.

Engineering Studies Faculty Publications and Creative Works

The phenomenon of aliasing is important when sampling analog signals. In cases where the signal is bandlimited, one can avoid aliasing by ensuring that the sampling rate is higher than the Nyquist rate . But in cases where the signal is not bandlimited , aliasing is unavoidable if the signal is not filtered before it is sampled. It is then crucial to understand the phenomenon in order to estimate the distortion generated when the signal is reconstructed from its samples. Using the software package MATLAB by MathWorks, Inc ., two examples are presented. The first is a pure sinusoid which …


Fall 1994, Wmpg 90.9 Fm Oct 1994

Fall 1994, Wmpg 90.9 Fm

WMPG Program Guides

WMPG program guide for Fall 1994

Includes notes from Program Director, information on shows and events, and schedule.


October 1994, Wmpg 90.9 Fm Oct 1994

October 1994, Wmpg 90.9 Fm

WMPG Program Guides

WMPG program guide for October 1994

Includes notes from Program Director, information on shows and events, and schedule.


Retrieval Of Sizes And Total Masses Of Particles In Volcanic Clouds Using Avhrr Bands 4 And 5, Shiming Wen, William I. Rose Mar 1994

Retrieval Of Sizes And Total Masses Of Particles In Volcanic Clouds Using Avhrr Bands 4 And 5, Shiming Wen, William I. Rose

Department of Geological and Mining Engineering and Sciences Publications

The advanced very high resolution radiometer (AVHRR) sensor on polar orbiting NOAA satellites can discriminate between volcanic clouds and meteorological clouds using two-band data in the thermal infrared. This paper is aimed at developing a retrieval of the particle sizes, optical depth, and total masses of particles from AVHRR two-band data of volcanic clouds. Radiative transfer calculations are used with a semi-transparent cloud model that is based on assumptions of spherical particle shape, a homogeneous underlying surface, and a simple thin cloud parallel to the surface. The model is applied to observed AVHRR data from a 13-hour old drifting cloud …


Winter 1994, 90.9 Wmpg Fm Jan 1994

Winter 1994, 90.9 Wmpg Fm

WMPG Program Guides

No abstract provided.


Summer 1994, 90.9 Wmpg Fm Jan 1994

Summer 1994, 90.9 Wmpg Fm

WMPG Program Guides

No abstract provided.


Fal 1993, Wmpg 90.9 Fm Oct 1993

Fal 1993, Wmpg 90.9 Fm

WMPG Program Guides

WMPG program guide for Fall 1993

Includes notes from Program Director, information on shows and events, and schedule.


An Exploratory Survey Of Methods Used To Develop Measures Of Performance, Kenneth L. Hamner, Charles A. Lafleur Sep 1993

An Exploratory Survey Of Methods Used To Develop Measures Of Performance, Kenneth L. Hamner, Charles A. Lafleur

Theses and Dissertations

Nonmanufacturing organizations are being challenged to provide high- quality products and services to their customers, with an emphasis on continuous process improvement. Measures of performance, referred to as metrics, can be used to foster process improvement. The application of performance measurement to nonmanufacturing processes can be very difficult. This research explored methods used to develop metrics in nonmanufacturing Organizations. Several methods were formally defined in the literature, and the researchers used a two- step screening process to determine the OMB Generic Method was most likely to produce high-quality metrics. The OMB Generic Method was then used to develop metrics. A …


Analysis Of Cutthroat Flume Discharge Ratings, Liyan Ren May 1993

Analysis Of Cutthroat Flume Discharge Ratings, Liyan Ren

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Sixteeen sets of original laboratory data collected by many investigators for various Cutthroat flume sizes are thoroughly reviewed and organized. Best-fit discharge parameters are obtained by performing the free-flow analysis and the submerged-flow analysis. Then, the transition submergence can be calculated. Afterwards, the unified free-flow and submerged-flow discharge parameters are developed for each flume size in order to generalize the calibrations for Cutthroat flumes. This is a very tedious process requiring a trial-and-error approach. Finally, comparisons are made of the measured laboratory discharges with the predicted discharges for both free flow and submerged flow using both the best-fit and the …


Why American Engineers Aren't Unionized - A Comparative Perspective, Peter F. Meiksins, Chris Smith Feb 1993

Why American Engineers Aren't Unionized - A Comparative Perspective, Peter F. Meiksins, Chris Smith

Sociology & Criminology Faculty Publications

This article presents a comparative perspective on why U.S. engineers are not unionized. The decline of organized labor in the U.S. has stimulated a new interest in comparative research. Explanations of the prolonged stagnation and contraction of the U.S. labor movement that focus on the U.S. alone run the risk of assuming that the U.S. case is normal, and that the decline of organized labor is a structural inevitability of advanced capitalism. By broadening their scope to include other industrialized countries with similar political economies and different labor histories, students of the labor movement will be better able to identify …


Summer 1993, 90.9 Wmpg Fm Jan 1993

Summer 1993, 90.9 Wmpg Fm

WMPG Program Guides

WMPG program guide for Summer 1993.


Spring 1993, 90.9 Wmpg Fm Jan 1993

Spring 1993, 90.9 Wmpg Fm

WMPG Program Guides

WMPG Program Guide, Spring 1993.


Spring 1992, Wmpg 90.9 Fm Apr 1992

Spring 1992, Wmpg 90.9 Fm

WMPG Program Guides

WMPG program guide for Spring 1992

Includes notes from Program Director, information on shows and events, and schedule.


Spring 1992, 90.9 Wmpg Fm Jan 1992

Spring 1992, 90.9 Wmpg Fm

WMPG Program Guides

Newsletter format.


Winter 1992-1993, 90.9 Wmpg Fm Jan 1992

Winter 1992-1993, 90.9 Wmpg Fm

WMPG Program Guides

WMPG Program Guide Winter 1992-1993


Brief History Of Afmic (Total Manpower), Robert Bolin , Depositor, Jonathan Clemente Jan 1992

Brief History Of Afmic (Total Manpower), Robert Bolin , Depositor, Jonathan Clemente

United States Department of Defense Military Intelligence

Brief History of AFMIC (Total Manpower) from WWI/ (33) to 1992 (82)

U.S. Army Medical Intelligence Office Under SG

DLA Assumes GMI Medical Intelligence Mission

Army SG Continues to Perfonn Medical S&TI

DLA has RIF: Medical Intelligence Division Abolished

Army SG Assumes Entire Medical Intelligence Mission

USAMIIA Fonned (Located at ForrestaJ Buildng)

USAMIIA Move to Fort Detrick (Building 862)

Congress Eliminates All Funding for USAMIlA

DIAlGDIP Program Manager Appeals

Congress Allows Re-establishment of USAMIlA

- Must be Tri-Service

- Must be an Intelligence Activity

Tri-Service AFMIC Established

Anny (DCSINT and SG) Executive Agent

New Building on Fort Detrick

First Non-Army …


Spring 1991, Wmpg 90.9 Fm Apr 1991

Spring 1991, Wmpg 90.9 Fm

WMPG Program Guides

WMPG program guide for Spring 1991

Includes notes from Program Director, information on shows and events, and schedule.


Summer 1991, 90.9 Wmpg Fm Jan 1991

Summer 1991, 90.9 Wmpg Fm

WMPG Program Guides

Newsletter format.


Spring 1991, 90.9 Wmpg Fm Jan 1991

Spring 1991, 90.9 Wmpg Fm

WMPG Program Guides

Newsletter format.


Shadow Casting Phenomena At Newgrange, Frank Prendergast Jan 1991

Shadow Casting Phenomena At Newgrange, Frank Prendergast

Articles

A digital model of the Newgrange passage tomb and surrounding ring of monoliths known as the Great Circle is used to investigate sunrise shadow casting phenomena at the monument. Diurnal variation in shadow directions and lengths are analysed for their potential use in the Bronze Age to indicate the passage of seasonal time. Computer-aided simulations are developed from a photogrammetric survey to accurately show how three of the largest monoliths, located closest to the tomb entrance and archaeologically coded GC1, GC-1 and GC-2, cast their shadows onto the vertical face of the entrance kerbstone, coded K1. The phenomena occur at …


Fm 34-54, Battlefield Technical Intelligence, April 1990, Robert Bolin , Depositor Apr 1990

Fm 34-54, Battlefield Technical Intelligence, April 1990, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

This manual contains a theoretical description of technical intelligence within US forces in the field. It contains a brief historical sketch of the evolution of technical intelligence and a description of national intelligence organizations and an explanation of the relationships between them.

It explains technical intelligence organization, operations, and responsibilities within a US command in the field. It contains extensive examples of documents and forms used in technical intelligence operations, a detailed foreign language recognition guide, an extensive list of abbreviations, and a detailed glossary.


Winter/Spring 1990, 90.9 Wmpg Fm Jan 1990

Winter/Spring 1990, 90.9 Wmpg Fm

WMPG Program Guides

Newspaper format


Summer 1990, 90.9 Wmpg Fm Jan 1990

Summer 1990, 90.9 Wmpg Fm

WMPG Program Guides

Newsletter format.


Us Army Foreign Science And Technology Center [A Brochure], Robert Bolin , Depositor Jan 1990

Us Army Foreign Science And Technology Center [A Brochure], Robert Bolin , Depositor

United States Department of Defense Military Intelligence

The Foreign Science and Technology Center (FSTC) was a special-purpose intelligence production organization concerned with weapons and equipment of foreign ground forces.

This document is a lengthy, polished brochure giving a general overview of FSTC apparently intended for recruitment purposes. It outlines the mission and function of FSTC and of its subdivisions and gives a thumb-nail sketch of the history of the organization.

Although it is undated, information in the text indicates that it was probably published around 1990.


Fm 8-10-8, Medical Intelligence In A Theater Of Operations, July 1989, Us Army, Academy Of Health Sciences, Robert Bolin , Depositor Jul 1989

Fm 8-10-8, Medical Intelligence In A Theater Of Operations, July 1989, Us Army, Academy Of Health Sciences, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

This manual explains the importance of medical intelligence in planning and execution of military operations. It describes the responsibilities of medical and intelligence staffs and personnel at each echelon especially within a US military command in the field. It explains the role and functions of the Armed Forces Medical Intelligence Center which provides “medical scientific and technical intelligence and general medical intelligence” for the US Armed Forces.

The manual explains procedures used to report intelligence information and to request intelligence reports as well as the forms used for those purposes.

The references anticipated the publication of an overdue updated to …


Spring 1989, 90.9 Wmpg Fm Jan 1989

Spring 1989, 90.9 Wmpg Fm

WMPG Program Guides

Newspaper format


Summer 1989, 90.9 Wmpg Fm Jan 1989

Summer 1989, 90.9 Wmpg Fm

WMPG Program Guides

Newspaper format


Goes Imagery Fills Gaps In Montserrat Volcanic Cloud Observations, Mark A. Davies, William I. Rose Oct 1988

Goes Imagery Fills Gaps In Montserrat Volcanic Cloud Observations, Mark A. Davies, William I. Rose

Department of Geological and Mining Engineering and Sciences Publications

GOES satellite imagery offers great potential to lessen the risk of volcanic ash clouds to aviation, and the situation at Montserrat in the Caribbean is providing the proof. Many transatlantic, commercial, and private aircraft use airspace around Montserrat, where the Soufriere Hills Volcano has been erupting since 1995.

Worldwide over the last 15 years, more than 80 airplanes have reported encountering volcanic ash along flight paths. Encounters cannot be avoided because onboard radar cannot detect fine-grained ash particles—those with a radius of 15 microns or less. In recent years volcanic cloud encounters are estimated to have caused hundreds of millions …


Common Characteristics Of Paired Volcanoes In Northern Central America, S. P. Halsort, William I. Rose May 1988

Common Characteristics Of Paired Volcanoes In Northern Central America, S. P. Halsort, William I. Rose

Department of Geological and Mining Engineering and Sciences Publications

Four pairs of active volcanoes along the northern Central American volcanic front have erupted basalt-andesite magmas that show consistent intrapair behavioral and compositional differences. These differences are found in records of volcanic activity and complete major and minor element data on over 200 samples. From northwest to southeast along the volcanic front the four volcano pairs are Cerro Quemado-Santa María, Tolimán-Atitlán, Acatenango-Fuego, and Santa Ana-Izalco. The volcano pair relations help explain compositional differences, apart from those reflecting variation in crustal thickness of about 15 km along the volcanic front, providing insight into across-arc variations and closely spaced subvolcanic plumbing systems. …


Direct Rate Measurements Of Eruption Plumes At Augustine Volcano: A Problem Of Scaling And Uncontrolled Variables, William I. Rose, Grant Heiken, Kenneth Wohletz, Dean Eppler, Sumner Barr, Theresa Miller, Raymond L. Chuan, R. B. Symonds May 1988

Direct Rate Measurements Of Eruption Plumes At Augustine Volcano: A Problem Of Scaling And Uncontrolled Variables, William I. Rose, Grant Heiken, Kenneth Wohletz, Dean Eppler, Sumner Barr, Theresa Miller, Raymond L. Chuan, R. B. Symonds

Department of Geological and Mining Engineering and Sciences Publications

The March–April 1986 eruption of Augustine Volcano, Alaska, provided an opportunity to directly measure the flux of gas, aerosol, and ash particles during explosive eruption. Most previous direct measurements of volcanic emission rates are on plumes from fuming volcanoes or on very small eruption clouds. Direct measurements during explosive activity are needed to understand the scale relationships between passive degassing or small eruption plumes and highly explosive events. Conditions on April 3, 1986 were ideal: high winds, clear visibility, moderate activity. Three measurements were made: 1) an airborne correlation spectrometer (Cospec) provided mass flux rates of SO2; 2) …