182,356 research outputs found
Multicomponent image segmentation using a genetic algorithm and artificial neural network
No full textImage segmentation is an essential process for image analysis. Several methods were developed to segment multicomponent images, and the success of these methods depends on several factors including 1) the characteristics of the acquired image and 2) the percentage of imperfections in the process of image acquisition. The majority of these methods require a priori knowledge, which is difficult to obtain. Furthermore, they assume the existence of models that can estimate its parameters and fit to the given data. However, such a parametric approach is not robust, and its performance is severely affected by the correctness of the utilized parametric model. In this letter, a new multicomponent image segmentation method is developed using a nonparametric unsupervised artificial neural network called Kohonen's self-organizing map (SOM) and hybrid genetic algorithm (HGA). SOM is used to detect the main features that are present in the image; then, HGA is used to cluster the image into homogeneous regions without any a priori knowledge. Experiments that are performed on different satellite images confirm the efficiency and robustness of the SOM-HGA method compared to the Iterative Self-Organizing DATA analysis technique (ISODATA). © 2007 IEEE.ARIA EH, 2004, P 20 ISPRS C IST TUR, P117; AWAD M, IN PRESS INT J REMOT; BACAO F, 2005, P ICCS 2005 C, P476; Baker J. E., 1987, P 2 INT C GEN ALG, P14; CHEN Q, 2004, LECT NOTES COMPUT SC, V33, P621; Chun DN, 1996, PATTERN RECOGN, V29, P1195, DOI 10.1016-0031-3203(95)00148-4; Fauzi M., 2003, P BRIT MACH VIS C, P519; HOLLLAND J, 1975, ADAPT NATURAL ARTIFI; HUAPT R, 2004, PRACTICAL GENETIC AL; Jensen J. R., 1996, INTRO DIGITAL IMAGE; Kohavi R., 1998, APPL MACHINE LEARNIN, V30, P271; Levine M. D., 1985, VISION MAN MACHINE; NEVATIA R, 1980, COMPUT VISION GRAPH, V13, P257, DOI 10.1016-0146-664X(80)90049-0; Ng SC, 1996, IEEE SIGNAL PROC MAG, V13, P38, DOI 10.1109-79.543974; PARZEN E, 1962, ANN MATH STAT, V33, P1065, DOI 10.1214-aoms-1177704472; PERKINS S, 2000, FUZZY SYST EVOL COMP, V3, P52; Pina P, 2003, INT GEOSCI REMOTE SE, P3516; PRATT W, 1991, DIGITA IMAGE PROCESS; Tou J.T., 1974, PATTERN RECOGNITION; Wang X., 2004, P IEEE C ROB AUT MEC, P991; Xiaoying Jin, 2003, Proceedings of the 12th IEEE International Conference on Fuzzy Systems (Cat. No.03CH37442); Xu BG, 2002, AATCC REV, V2, P42; Yao KC, 2000, PATTERN RECOGN, V33, P1575, DOI 10.1016-S0031-3203(99)00135-1; YIN HJ, 1995, NEURAL COMPUT, V7, P1178, DOI 10.1162-neco.1995.7.6.117834232
Perspectives On electronic data processing. A book of readings. /
No full textX14/222 v, Holmes (James D)& Awad (Elias M
Imitations in Pottery of Stone Vessels in a Protodynastic Tomb from Tell Ibrahim Awad
No full textPublication of a group ofsmall vessels, imitating counterparts in calcite, from a looted 2nd Dynasty tomb at Tell Ibrahim Awad in the Delta.Publication d’un groupe de petites céramiques, répliques en terre cuite de vases en calcite, provenant d’un tombeau de la IIe dynastie à Tell Ibrahim Awad dans le Delta.Van Haarlem Willem M. Imitations in Pottery of Stone Vessels in a Protodynastic Tomb from Tell Ibrahim Awad. In: Archéo-Nil. Revue de la société pour l'étude des cultures prépharaoniques de la vallée du Nil, n°7, 1997. Sources et acquisition des matières premières. pp. 145-150
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
A Remarkable ‘Hedgehog-Ship’ from Tell Ibrahim Awad
No full text Publication of a recently discovered ‘hedgehog-ship’ model from Tell Ibrahim Awad in the Eastern Delta. </jats:p
Typhlodromus totifolianensis El-Banhawy & Abou-Awad
No full text<i>Typhlodromus totifolianensis</i> El-Banhawy & Abou-Awad <p>(Fig. 105)</p> <p> <i>Typhlodromus totifolianensis</i> El-Banhawy & Abou-Awad, 1991: 219.</p> <p> <b>Material examined.</b> Kenya, 7 females, Mweiga KWS, Nyeri District Central Province, altitude 1500 m, July 12, 2004; 2 females, Mt. Kenya, woodland, altitude 1500 m, July 13 2004; 2 females, Mt. Kenya, salient main road, altitude 2000 m, July 13, 2004 (El-Banhawy).</p> <p> <b>Female:</b> Dorsal shield reticulated, 280 long, 165 wide. Measurements of dorsal setae: j1 23, j3 27, j4 16, j5 21, j6, J2 28, J5 9, z2 21, z3 28, z4 32, z5 23, Z4 46, Z5 53, s4 30, s6 32, S2, S4 32, S5 22, JV5 40. Setae Z 4, Z5 serrated, Z4 blunt, remaining setae smooth. Peritrematal shield fused anteriorly with dorsal shield, reaching level of j1. Sternal shield, distances between St I-St III 62, St II-St II 55, St III off shield, St IV on platelets. Genital shield 58 wide. Ventri-anal shield 90 long, 62 wide (L/W ratio 1.5: 1), with a pair of round pre-anal pores and four pairs of pre-anal setae (JV1, JV2, JV3, ZV2). Two pairs of metapodal platelets, two pairs of sigillar sclerites, and four pairs of setae surrounding ventri-anal shield. Fixed digit of chelicera with four teeth, movable digit with two teeth. Spermatheca calyx cup-shaped, 12 long, 7 wide, atrium enlarged, 6 long. Macroseta knobbed, St IV 39. Chaetotaxy: genu II 2, 2 / 0, 2/0, 1, genu III 1, 2 /1, 2/0, 1.</p> <p> <b>Remarks.</b> The female holotype and male paratype were collected from Arusha, Tanzania, March 24, 1987, E. Youssef (El-Banhawy & Abou-Awad, 1991).</p>Published as part of <i>El-Banhawy, E. M. & Knapp, M., 2011, Mites of the family Phytoseiidae Berlese from Kenya (Acari: Mesostigmata) 2945, pp. 1-176 in Zootaxa 2945 (1)</i> on page 61, DOI: 10.11646/zootaxa.2945.1.1, <a href="http://zenodo.org/record/5282557">http://zenodo.org/record/5282557</a>
Intern experience at CH���M Hill, Inc.: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
The First Intermediate Period Cemetery and Settlement at Tell Ibrahim Awad
No full textDiscussion of the remains from the First Intermediate Period at the Eastern Delta site of Tell Ibrahim Awad, with a habitation history extending from the Middle Kingdom back to Predynastic times. Besides a number of poorly furnished tombs in an abandoned part of the settlement, the village temple also presents some evidence from the period.Willem Van Haarlem présente les fouilles récentes de Tell Ibrahim Awad, dans le Delta oriental, étudiant parallèlement un village, un cimetière et des installations cultuelles des niveaux de la Première Période Intermédiaire.van Haarlem Willem M. The First Intermediate Period Cemetery and Settlement at Tell Ibrahim Awad. In: Des Néferkarê aux Montouhotep. Travaux archéologiques en cours sur la fin de la VIe dynastie et la Première Période Intermédiaire. Actes du colloque CNRS – université Lumière Lyon 2, tenu le 5-7 juillet 2001. Lyon : Maison de l'Orient et de la Méditerranée Jean Pouilloux, 2005. pp. 195-202. (Travaux de la Maison de l'Orient et de la Méditerranée, 40
Intern experience at the Texas Transportation Institute: an internship report
No full text"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirements for the degree of Doctor of Engineering."Includes vita (leaf 91)Includes bibliographical references (leaf 57)This report discusses the author's engineering experience at the Texas
Transportation Institute (TTI), Texas A&M University from March 1974 through July 1977. A
report of this experience plus twelve additional hours of academic course work were
substituted for an internship according to requirements established by the College of
Engineering. Although the author could not retroactively establish objectives of the type
associated with a typical internship, the work experience gained could be related to the two
general objectives of an intership: 1. To demonstrate an identifiable contribution to the
organization in which the intern served, and 2. To enable the intern to become aware of the
non-technical aspects of working as an engineer in a non-academic environment. While a member
of the Texas Transportation Institute staff, the author worked on a number of projects in the
areas of highway traffic engineering research and the preparation of continuing education
courses for transportation engineering officials. These assignments were contained within the
Urban Transportation Systems Division of TTI. This report delineates the author's contribution
to four particular projects and discusses the technical as well as non-technical experience
gained from each. Having been exposed to more engineering situations than many of the other
Doctor of Engineering students, the author has already formulated some rather specific
milestones for the future. The Doctor of Engineering program is discussed in conjunction with
its potential for helping the author attain these career goals and objectives. Also, some
thoughts are presented regarding the Doctor of Engineering as a viable alternative to the
Ph.D. in preparing for a career in engineering higher education
- …
