347 research outputs found
Anomaly Detection Based Framework for Profile Monitoring
No full textA Master of Science thesis in Engineering Systems Management by Nour Al-Huda Z. Al-Abed Al-Rahim entitled, “Anomaly Detection Based Framework for Profile Monitoring”, submitted in May 2023. Thesis advisor is Dr. Hussam Alshraideh and thesis co-advisor is Dr. Mahmoud Awad. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).Due to significant developments in technology, manufacturing processes are being equipped with sensors that provide continuous monitoring of the input and output process parameters. Signals observed through such sensors provide crucial details about the quality of the manufactured items. While significant amount of work has been found in the literature that aims at monitoring products quality through acquired process signals, these studies assume enough frequency of defective products implying balanced models training data. In the case of data imbalance, such methods provide biased and misleading prediction results. This work presents an anomaly detection-based framework for monitoring profile generating processes in the case of infrequent process defectives. The framework is based on the use of Isolation Forest (IF), Local Outlier Factor (LOF) and Density Based Scan (DBSCAN) algorithms. The proposed framework is illustrated through two case studies, a thread tapping process and a 3D printing process. For the tapping process, the DBSCAN model provided the best performance with AUC=0.83, accuracy=71.34%, and sensitivity=82.31%, compared to the IF and LOF models. For the 3D printing process, the IF algorithm achieved the best performance with AUC=0.85, accuracy=74.83%, and sensitivity=82.22%, outperforming the LOF and DBSCAN models. These findings demonstrate the efficacy of the proposed framework for monitoring profile generating processes and its potential to improve quality control in manufacturing processes.College of EngineeringDepartment of Industrial EngineeringMaster of Science in Engineering Systems Management (MSESM
2026: Ruth Awad
No full textRuth Awad is a Lebanese-American disabled poet, a 2021 NEA Poetry fellow, and the author of Outside the Joy (Third Man Books, 2024) and Set to Music a Wildfire (Southern Indiana Review Press, 2017), winner of the 2016 Michael Waters Poetry Prize and the 2018 Ohioana Book Award for Poetry. Her work can be found in The Atlantic, AGNI, Poetry, Poem-a-Day, The Believer, The New Republic, and elsewhere. She has an MGA in poetry from Southern Illinois University Carbondale, and she lives and writes in Columbus, Ohio.https://thekeep.eiu.edu/lionsinwinter_writers/1055/thumbnail.jp
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
Effect of pollination time, the hour of daytime, pollen storage temperature and duration on pollen viability, germinability, and fruit set of date palm (Phoenix dactylifera L.) cv "Deglet Nour"
No full textSuccess artificial pollination with viable pollen is crucial process in the production chain of date palms. This study evaluated the impact of pollen storage temperature and duration, pollination time following spathe cracking, and the hour of daytime on pollen viability, germinability, fruit set and yield of 'Deglet Nour' date palm cultivar. In in vitro tests, fresh pollen showed the maximum viability (96.3%) and germination (85%) but it decreased thereafter upon the storage temperature (28, 4 and-30 degrees C) and duration (3, 6, 9 and 12 months). In this respect, pollen stored at-30 degrees C retained highest viability and germinability followed by those stored at 4 and then at 28 degrees C. In filed experiments, fruit set was 85, 75, 65, and 45% with pollination using fresh pollen, or pollen stored at-30, 4 and 28 degrees C, respectively. Fruit set was 95%, 75%, and less than 50%, for pollination performed on the same day of spathe cracking, 6 and 12 days later, respectively. The highest fruit set percentage and yield/bunch were obtained with pollination performed between 12.0 pm and 15.0 pm in contrast to 8.0-11.0 am or 16.0-17.0. (c) 2021 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)
The sorption of ammonia on brown coal
No full text© 1978 Dr. Awad Rizk OussaThis thesis is a report of an investigation carried out by the author between 1st April 1969 to 31st October 1973 on a full time basis and from 1st December 1975 to 31st July 1978 on a part time basis. The research project was conducted by the author in the Department of Chemical Engineering, University of Melbourne, and on the premises of Australian Char Pty. Ltd., Morwell.
The project was based on the premise that useful information on the brown coal-ammonia system can be obtained from sorption isotherms. The author designed and assembled the apparatus with this in mind, and developed a method of obtaining a self-consistent and meaningful interpretation of the sorption isotherms. Thermodynamic data for the ammonia sorption process was derived and used to develop a preliminary model for the ammonia-brown coal system.
No separate literature review has been presented in the thesis, though frequent reference to the literature has been made in the discussions in each chapter.
Finally, the experimental details have been included in the appendices at the end of the thesis
Superconducting properties of zinc substitution in Tl-2223 phase
No full textThe effect of partial replacement of copper by zinc in Tl2Ba2Ca2Cu3O10-δ superconductor phase is studied. Superconducting samples of the nominal composition Tl2Ba2Ca2Cu3-xZnx O10-δ with x ranging from 0 to 0.6 are prepared under normal pressure by a one step of solid-state reaction technique. The samples are characterized by using X-ray powder diffraction, scanning electron microscope (SEM) and EDX. The X-ray data indicate that the partial replacement of Cu2+ions by Zn2+ions does not influence the tetragonal structure of the samples, and the lattice parameters a and c vary according to the difference in the ionic radii of Cu and Zn. The superconducting parameters, such as superconducting transition temperature Tc, critical current density Jc and irreversibility field Bir are calculated from electrical resistivity and AC-magnetic susceptibility measurements. © 2007 Elsevier B.V. All rights reserved.Abou-Aly A.I., 2002, INT C RES TRENDS SCI, V91; ADACHI S, 1990, PHYSICA C, V111, P543; Awad R, 2000, PHYSICA C, V341, P685, DOI 10.1016-S0921-4534(00)00650-X; Awad R, 2007, SUPERCOND SCI TECH, V20, P401, DOI 10.1088-0953-2048-20-4-017; Awad R, 2001, PHYSICA B, V307, P72, DOI 10.1016-S0921-4526(01)00971-1; Batista-Leyva AJ, 2003, SUPERCOND SCI TECH, V16, P857, DOI 10.1088-0953-2048-16-8-305; BEAN CP, 1964, REV MOD PHYS, V36, P31, DOI 10.1103-RevModPhys.36.31; BERKLEY DD, 1993, PHYS REV B, V47, P5524, DOI 10.1103-PhysRevB.47.5524; CHEN DX, 1990, PHYSICA C, V167, P317, DOI 10.1016-0921-4534(90)90349-J; Chu SY, 2000, PHYSICA C, V337, P229, DOI 10.1016-S0921-4534(00)00107-6; Fradina IA, 1999, PHYSICA C, V311, P81, DOI 10.1016-S0921-4534(98)00563-2; Glowacki BA, 1997, CRYOGENICS, V37, P609, DOI 10.1016-S0011-2275(97)00053-2; HAZEN RM, 1988, PHYS REV LETT, V60, P1657, DOI 10.1103-PhysRevLett.60.1657; Isber S, 2005, SUPERCOND SCI TECH, V18, P311, DOI 10.1088-0953-2048-18-3-018; Isber S, 2006, J PHYS CONF SER, V43, P450, DOI 10.1088-1742-6596-43-1-112; Kayed TS, 2003, CRYST RES TECHNOL, V38, P946, DOI 10.1002-crat.200310118; Kuhberger M, 2003, PHYSICA C, V390, P263, DOI 10.1016-S0921-4534(03)00706-8; LEE MW, 1995, PHYSICA C, V245, P6, DOI 10.1016-0921-4534(95)00100-X; Mezzetti E, 2000, PHYSICA C, V332, P115, DOI 10.1016-S0921-4534(00)00008-3; MOHAMMED NH, 2005, ARAB INT C REC ADV P, P9; Nishida A, 2003, PHYSICA C, V392, P349, DOI 10.1016-S0921-4534(03)00848-7; Pavard S, 1999, PHYSICA C, V316, P198, DOI 10.1016-S0921-4534(99)00259-2; Ravi S, 2000, PHYSICA C, V330, P58, DOI 10.1016-S0921-4534(99)00611-5; REN ZF, 1991, PHYSICA C, V184, P24, DOI 10.1016-0921-4534(91)91496-Q; RUCKENSTEIN E, 1989, MATER LETT, V8, P421, DOI 10.1016-0167-577X(89)90065-7; Tang H, 1997, PHYSICA C, V282, P2111, DOI 10.1016-S0921-4534(97)01171-4; Triscone G, 1996, PHYSICA C, V264, P233, DOI 10.1016-0921-4534(96)00262-6; VANDERAH TA, 1992, CHEM SUPERCONDUCTOR, P90; WANG YB, 1993, J LOW TEMP PHYS, V15, P169; WESTERHOLT K, 1989, PHYS REV B, V39, P11680, DOI 10.1103-PhysRevB.39.11680; Wisniewski A, 2000, PHYS REV B, V61, P791, DOI 10.1103-PhysRevB.61.791; XU YW, 1990, PHYSICA C, V169, P205, DOI 10.1016-0921-4534(90)90177-G; Yamauchi H, 1998, SUPERCOND SCI TECH, V11, P1006, DOI 10.1088-0953-2048-11-10-022; Yang Li, 1994, Physics Letters A, V18543
Études structurales et fonctionnelles des interactions entre lipides et récepteurs nicotinique de l'acétylcholine
No full textPentameric channel receptors (PCRs) are transmembrane proteins fundamental to neurotransmission. As allosteric receptors, they mediate the rapid transduction of electrochemical signal through the opening of an ion channel upon neurotransmitters binding. We are particularly interested in α7nicotinic acetylcholine homomeric receptor (nAChR), which is involved in cognitive functions of the central nervous system and is associated with Alzheimer's disease and schizophrenia; and in the α3β4nicotinic receptor implicated in nicotine addiction and alcohol dependance. These receptors are embedded in the plasma membrane, and some lipids have been described as essential to their function, either by direct binding or by modifying the physical properties of the plasma membrane. However, the studies on the interactions between neuronal nAChRs and lipids remain very fragmentary. This project aims to study the impact of the membrane environment on the function of nAChRs. First,by measuring the apparent binding affinity of agonists to evaluate the state of the protein and its ability to undergo allosteric transitions, we show that detergent extraction impairs the function of the receptor. Second, we have undertaken a pharmacological analysis by voltage-clamp of the interaction of alpha7with fatty acids, as well as site-directed mutagenesis to identify their binding site. This work demonstrates the importance of lipids on receptor function and will pave the way for understanding the allosteric regulatory mechanisms of fatty acids at the transmembrane domain level. It will also enable structure biology experiments in a controlled membrane environment and examine synthetic compounds for the treatment of neurodegenerative diseases and cancer.Les récepteurs canaux pentamériques (RCPs) sont des protéines transmembranaires fondamentales pour la neurotransmission. Ils sont responsables de la transduction rapide des signaux électrochimiques par l'ouverture d'un canal ionique suite à la liaison de neurotransmetteurs. Nous nous intéressons particulièrement au récepteur nicotinique à l'acétylcholine α7 (nAChR), impliqué dans les fonctions cognitives du système nerveux central et associé à la maladie d'Alzheimer et à la schizophrénie, ainsi qu'au récepteur nicotinique α3β4 impliqué dans la dépendance à la nicotine et à l'alcool. Ces récepteurs sont intégrés dans la membrane plasmique, et certains lipides ont été décrits comme essentiels à leur fonction soit par liaison directe soit en modifiant les propriétés physiques de la membrane plasmique. Cependant, les études sur les interactions entre les récepteurs nAChRS neuronaux et les lipides sont encore très fragmentaires. Ce projet consiste à étudier l'impact de l'environnement membranaire sur la fonction des nAChRs. Premièrement, en mesurant l'affinité apparente de liaison des agonistes, afin d'évaluer l'état de la protéine et sa capacité à réaliser des transitions allostériques, nous avons montré que l'extraction en micelles de détergents ne permettait pas de conserver la fonction des deux récepteurs. Deuxièmement, nous avons entrepris une analyse pharmacologique en électrophysiologie pour déterminer l'effet direct de certains acides gras sur le récepteur alpha7, et nous avons identifié leur site de liaison par mutagénèse. Ce travail montre l'importance des lipides sur la fonction du récepteur et ouvrira la voie à la compréhension des mécanismes de régulation allostérique des acides gras au niveau du domaine transmembranaire. Il permettra également de mener des expériences de biologie structurale dans un environnement membranaire contrôlé, et d'examiner des composés synthétiques en cours de développement clinique pour le traitement des maladies neurodégénératives et du cancer
Études structurales et fonctionnelles des interactions entre lipides et récepteurs nicotinique de l'acétylcholine
No full textPentameric channel receptors (PCRs) are transmembrane proteins fundamental to neurotransmission. As allosteric receptors, they mediate the rapid transduction of electrochemical signal through the opening of an ion channel upon neurotransmitters binding. We are particularly interested in α7nicotinic acetylcholine homomeric receptor (nAChR), which is involved in cognitive functions of the central nervous system and is associated with Alzheimer's disease and schizophrenia; and in the α3β4nicotinic receptor implicated in nicotine addiction and alcohol dependance. These receptors are embedded in the plasma membrane, and some lipids have been described as essential to their function, either by direct binding or by modifying the physical properties of the plasma membrane. However, the studies on the interactions between neuronal nAChRs and lipids remain very fragmentary. This project aims to study the impact of the membrane environment on the function of nAChRs. First,by measuring the apparent binding affinity of agonists to evaluate the state of the protein and its ability to undergo allosteric transitions, we show that detergent extraction impairs the function of the receptor. Second, we have undertaken a pharmacological analysis by voltage-clamp of the interaction of alpha7with fatty acids, as well as site-directed mutagenesis to identify their binding site. This work demonstrates the importance of lipids on receptor function and will pave the way for understanding the allosteric regulatory mechanisms of fatty acids at the transmembrane domain level. It will also enable structure biology experiments in a controlled membrane environment and examine synthetic compounds for the treatment of neurodegenerative diseases and cancer.Les récepteurs canaux pentamériques (RCPs) sont des protéines transmembranaires fondamentales pour la neurotransmission. Ils sont responsables de la transduction rapide des signaux électrochimiques par l'ouverture d'un canal ionique suite à la liaison de neurotransmetteurs. Nous nous intéressons particulièrement au récepteur nicotinique à l'acétylcholine α7 (nAChR), impliqué dans les fonctions cognitives du système nerveux central et associé à la maladie d'Alzheimer et à la schizophrénie, ainsi qu'au récepteur nicotinique α3β4 impliqué dans la dépendance à la nicotine et à l'alcool. Ces récepteurs sont intégrés dans la membrane plasmique, et certains lipides ont été décrits comme essentiels à leur fonction soit par liaison directe soit en modifiant les propriétés physiques de la membrane plasmique. Cependant, les études sur les interactions entre les récepteurs nAChRS neuronaux et les lipides sont encore très fragmentaires. Ce projet consiste à étudier l'impact de l'environnement membranaire sur la fonction des nAChRs. Premièrement, en mesurant l'affinité apparente de liaison des agonistes, afin d'évaluer l'état de la protéine et sa capacité à réaliser des transitions allostériques, nous avons montré que l'extraction en micelles de détergents ne permettait pas de conserver la fonction des deux récepteurs. Deuxièmement, nous avons entrepris une analyse pharmacologique en électrophysiologie pour déterminer l'effet direct de certains acides gras sur le récepteur alpha7, et nous avons identifié leur site de liaison par mutagénèse. Ce travail montre l'importance des lipides sur la fonction du récepteur et ouvrira la voie à la compréhension des mécanismes de régulation allostérique des acides gras au niveau du domaine transmembranaire. Il permettra également de mener des expériences de biologie structurale dans un environnement membranaire contrôlé, et d'examiner des composés synthétiques en cours de développement clinique pour le traitement des maladies neurodégénératives et du cancer
Structural and functional studies of the interactions between lipids and nicotinic acetylcholine receptors
No full textLes récepteurs canaux pentamériques (RCPs) sont des protéines transmembranaires fondamentales pour la neurotransmission. Ils sont responsables de la transduction rapide des signaux électrochimiques par l'ouverture d'un canal ionique suite à la liaison de neurotransmetteurs. Nous nous intéressons particulièrement au récepteur nicotinique à l'acétylcholine α7 (nAChR), impliqué dans les fonctions cognitives du système nerveux central et associé à la maladie d'Alzheimer et à la schizophrénie, ainsi qu'au récepteur nicotinique α3β4 impliqué dans la dépendance à la nicotine et à l'alcool. Ces récepteurs sont intégrés dans la membrane plasmique, et certains lipides ont été décrits comme essentiels à leur fonction soit par liaison directe soit en modifiant les propriétés physiques de la membrane plasmique. Cependant, les études sur les interactions entre les récepteurs nAChRS neuronaux et les lipides sont encore très fragmentaires. Ce projet consiste à étudier l'impact de l'environnement membranaire sur la fonction des nAChRs. Premièrement, en mesurant l'affinité apparente de liaison des agonistes, afin d'évaluer l'état de la protéine et sa capacité à réaliser des transitions allostériques, nous avons montré que l'extraction en micelles de détergents ne permettait pas de conserver la fonction des deux récepteurs. Deuxièmement, nous avons entrepris une analyse pharmacologique en électrophysiologie pour déterminer l'effet direct de certains acides gras sur le récepteur alpha7, et nous avons identifié leur site de liaison par mutagénèse. Ce travail montre l'importance des lipides sur la fonction du récepteur et ouvrira la voie à la compréhension des mécanismes de régulation allostérique des acides gras au niveau du domaine transmembranaire. Il permettra également de mener des expériences de biologie structurale dans un environnement membranaire contrôlé, et d'examiner des composés synthétiques en cours de développement clinique pour le traitement des maladies neurodégénératives et du cancer.Pentameric channel receptors (PCRs) are transmembrane proteins fundamental to neurotransmission. As allosteric receptors, they mediate the rapid transduction of electrochemical signal through the opening of an ion channel upon neurotransmitters binding. We are particularly interested in α7nicotinic acetylcholine homomeric receptor (nAChR), which is involved in cognitive functions of the central nervous system and is associated with Alzheimer's disease and schizophrenia; and in the α3β4nicotinic receptor implicated in nicotine addiction and alcohol dependance. These receptors are embedded in the plasma membrane, and some lipids have been described as essential to their function, either by direct binding or by modifying the physical properties of the plasma membrane. However, the studies on the interactions between neuronal nAChRs and lipids remain very fragmentary. This project aims to study the impact of the membrane environment on the function of nAChRs. First,by measuring the apparent binding affinity of agonists to evaluate the state of the protein and its ability to undergo allosteric transitions, we show that detergent extraction impairs the function of the receptor. Second, we have undertaken a pharmacological analysis by voltage-clamp of the interaction of alpha7with fatty acids, as well as site-directed mutagenesis to identify their binding site. This work demonstrates the importance of lipids on receptor function and will pave the way for understanding the allosteric regulatory mechanisms of fatty acids at the transmembrane domain level. It will also enable structure biology experiments in a controlled membrane environment and examine synthetic compounds for the treatment of neurodegenerative diseases and cancer
Rehabilitation or Deterrence? A Comparative Policy Analysis of Probation Frameworks in Sweden and France
No full text- …
