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Search Results: 1 - 10 of 235 matches for " Yousif Yaqoub Yousif "
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Near Rough and Near Exact Subgraphs in Gm-Closure Spaces
Yousif Yaqoub Yousif
International Journal of Computer Science Issues , 2012,
Abstract: The basic concepts of some near open subgraphs, near rough, near exact and near fuzzy graphs are introduced and sufficiently illustrated. The Gm-closure space induced by closure operators is used to generalize the basic rough graph concepts. We introduce the near exactness and near roughness by applying the near concepts to make more accuracy for definability of graphs. We give a new definition for a membership function to find near interior, near boundary and near exterior vertices. Moreover, proved results, examples and counter examples are provided. The Gm-closure structure which suggested in this paper opens up the way for applying rich amount of topological facts and methods in the process of granular computing.
Design and Implement of a Programmable Logic Controller (PLC) for Classical Control Laboratory  [PDF]
Yousif I. Al Mashhadany
Intelligent Control and Automation (ICA) , 2012, DOI: 10.4236/ica.2012.31006
Abstract: The design and implementation of a classical control system laboratory based on PLC control system is introduced in this paper. To design and implement the system, two parts must be produced. The first is software for PLC and the second is hardware for experiments related to the programs. The PLC control system used in the design is LS industrial system company GM7-DR40A 24/16 Digital I/O and single Analog I/O module, two photoelectric sensors from Atonic company’: the first with the model BR100-DDT-P, and the second BEN10M-TFR. An approximate sensor with 5-sides is detected, four of CMOS BCD-7-Segment driven by CD4511B, two relays: 2-poles and 3-poles, six voltages and an ammeter measurement, DC motor and 24 VDC power supply and many connecters and pinions. Satisfactory results are obtained by executing twenty four experiments for classical control theory that fulfill the requirements of control theory in undergraduate stage and replace the old experiments executed by PID controller where the practice system is implemented by PLC control now.
Design and Implementation of Electronic Control Trainer with PIC Microcontroller  [PDF]
Yousif I. Al Mashhadany
Intelligent Control and Automation (ICA) , 2012, DOI: 10.4236/ica.2012.33025
Abstract: This paper describes the implementation of a PIC microcontroller in a conventional laboratory-type electronic trainer. The work comprises software for the PIC and hardware for the software. The PIC controller uses an EasyPIC6 board and includes a PC-interfaced programmer for the PIC chip. It has many external modules: 128 × 64 graphic LCD display, 2 × 16 LCD display, 4 × 4 keypad, and port expander, all in the same bench. The trainer is capable of 36 experiments in logic/analogue electronic and control systems. A 5-sided approximate sensor, two photoelectric sensors (BR56-DDT-P and BEN9M-TFR), four CMOS, four BCD-7-segment driven by CD4511B, two relays (2-pole and 3-pole), six voltages, ammeter measurement, DC motor, and 24VDC power supply, connect through connectors and pinions. Results of all the experiments show the trainer satisfying requirements of undergraduate and postgraduate projects involving conventional electronic and classical control systems.
Double Parton Scattering in Associate Higgs Boson Production with Heavy Quarks at the LHC  [PDF]
Mohammad Yousif Hussein
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.44A001
Abstract:

Higgs boson production in association with heavy quarks is one of the most important discovery channels for Higgs particles in the Standard Model and its super-symmetric extension at the LHC pp collider. We review the status of the Higgs boson studies, with particular emphasis on the case bbh and tth production. We present results for the total cross section at Large Hadron Collider (LHC) in both single and double parton scattering mechanism.

Quality of Nursing Courses as Perceived by Students: Relationship with Their Academic Achievement in Palestine College of Nursing  [PDF]
Yousif Mahmoud Awad
Open Journal of Nursing (OJN) , 2015, DOI: 10.4236/ojn.2015.51005
Abstract: The purpose of this study was to determine the Bachelor Science of Nursing (BSN), student’s perceptions of the quality of nursing courses taught at Palestine College of Nursing (PCN), which were fundamentals of nursing course, adult nursing course, pediatric nursing course, maternity nursing course, community nursing course, mental health and psychiatric nursing course and nursing management and leadership course, and its relationship with their academic achievement. The Palestine College of Nursing is governmental and Ministry of Health (MOH) affiliated. The sample included 467 nursing students registered in the college who studied the previously mentioned nursing courses. Data were collected using a self-administered questionnaire developed by the researcher, and guided by literature. That was to assess the included nine quality dimensions of the nursing courses as perceived by the students. Content validity and reliability tests were done for the tool. The study revealed that the total students’ perceptions of the quality of all nurses courses were within average quality level (80.42%). The nursing management course and community health nursing course were of the first two ranks of high quality level (84.54%, and 84.48%, respectively), where mental health and psychiatric nursing course, fundamentals of nursing course, adult health nursing course, pediatric nursing course and maternity health nursing course were the next ranks of average quality level. The study revealed that students’ perceptions of seven dimensions from nine were with average quality level (80.50%). The first rank was the “teacher/instructor characteristics and attributes”, dimension of high quality level (84.44%), while the last rank was “teaching methodology” dimension of average quality level (77.54%). There was a positive relationship between students’ achievement and the courses’ quality dimensions, pertaining objectives of the course, contents of the course, teacher/instructor competencies, teacher characteristics, teaching methodology, students/teacher interaction and course evaluation. The study recommended improving the quality of nursing courses for better level and to improve the quality of some dimensions like using different teaching strategies, the quality of clinical settings, and improve the quality of nursing instructors in some clinical areas. Finally the researcher recommend for further studies about concerning quality in nursing education.
Finite completely primary rings in which the product of any two zero divisors of a ring is in its coefficient subring
Yousif Alkhamees
International Journal of Mathematics and Mathematical Sciences , 1994, DOI: 10.1155/s0161171294000670
Abstract: According to general terminology, a ring R is completely primary if its set of zero divisors J forms an ideal. Let R be a finite completely primary ring. It is easy to establish that J is the unique maximal ideal of R and R has a coefficient subring S (i.e. R/J isomorphic to S/pS) which is a Galois ring. In this paper we give the construction of finite completely primary rings in which the product of any two zero divisors is in S and determine their enumeration. We also show that finite rings in which the product of any two zero divisors is a power of a fixed prime p are completely primary rings with either J2=0 or their coefficient subring is Z2n with n=2 or 3. A special case of these rings is the class of finite rings, studied in [2], in which the product of any two zero divisors is zero.
The effects of reading method on the comprehension performance of Saudi EFL students
Yousif ALSHUMAIMERI
International Electronic Journal of Elementary Education , 2011,
Abstract: In this study I investigated the relative effects of different reading methods on the comprehension performance of Saudi EFL 10th grade male students. The scores of participants who read threecomparable passages in three ways (oral, silent and subvocalizing) were compared. Results revealed a significant difference between oral reading and subvocalization, and between oral reading and silentreading. Oral reading had the greatest effect on comprehension performance among the three reading methods examined. All groups reported that oral reading was the most preferred readingmethod with the majority of respondents feeling the style best supported comprehension. Feedback suggested that oral reading was preferred specifically because it helps in memorizing words and texts, concentration, and practicing and pronouncing words for real world encounters. It is recommended that second language teachers and students use all available reading methods in order to identifywhich method best serves their study objectives.
Le Déclin de l’intelligentsia de gauche en Irak On the Decline of the Leftist Intelligentsia in Iraq
Salaam Yousif
Revue des Mondes Musulmans et de la Méditerranée , 2007, DOI: 10.4000/remmm.3281
Abstract: Durant les années 1940 et 1950, l’intelligentsia de gauche a joué un r le remarquable dans la construction d’une culture irakienne vibrante, a contribué à la floraison de la littérature et des arts et a exercé une influence majeure dans les sphères politique et culturelle. Cet article se centre principalement sur les années 1960 quand, malgré deux coups d’état baassistes, l’atmosphère culturelle était clairement de gauche. La seconde moitié de la décennie a été marquée par un élan vers la gauche, par un esprit de rébellion au sein de l’intelligentsia et par des productions culturelles innovantes. Le contr le du Baas sur la culture après 1968 et sa campagne contre le parti communiste irakien à la fin des années 1970, entre autres facteurs, ont conduit au déclin du PCI et à la réduction du r le de l’intelligentsia de gauche. During the 1940s-1970s, the leftist intelligentsia played a prominent role in constructing a vibrant Iraqi culture, contributed greatly to the flourishing of literature and the arts, and exerted a great impact in the cultural and political spheres. This article focuses primarily on the 1960s, when, despite two Ba’thist coups, the cultural ambience was pronouncedly leftist. The second half of the decade was marked by a leftward momentum in oppositional politics, a spirit of rebellion among the intelligentsia, and innovation in cultural productions. The Ba’th control of culture after 1968 and its campaign against the ICP in the late 1970s, among other factors, led to the subsequent decline of the ICP and the diminished role of the leftist intelligentsia.
An Efficient Method for Earth Resistance Reduction Using the Dead Sea Water  [PDF]
Yousif El-Tous, Salim A. Alkhawaldeh
Energy and Power Engineering (EPE) , 2014, DOI: 10.4236/epe.2014.64006
Abstract:

To protect humans, devices and maintain high reliability of electrical equipments, efficient earthing system has to be provided for residential and commercial buildings. The use of chemical elements around the electrode of earthing systems reduces the earth resistance which improves the efficiency of these systems. However, the use of these elements can’t achieve very small earth resistance especially in the case of dry clay. In addition, they are expensive and not available all the time. This paper presents a method that treats the soil with adding the Dead Sea water instead of the chemical elements to further reduce the earth resistance and to avoid the expenses of these elements. In our approach, the Dead Sea water is added to a hole around the electrode with a distance not exceeding 10 cm to avoid the corrosion layer on the electrode. Practical measurements are demonstrated to show the efficiency of the proposed approach.

Commissioning and Optimization of a Total Skin Electron Therapy Technique Using a High Dose Rate Electron Facility  [PDF]
Y. A. M. Yousif, Casper A. Willemse
International Journal of Medical Physics,Clinical Engineering and Radiation Oncology (IJMPCERO) , 2015, DOI: 10.4236/ijmpcero.2015.43024
Abstract: Total skin electron therapy (TSET) is used for the treatment of Mycosis Fungoides. Several tech-niques have been developed, in order to achieve homogeneous dose distribution over the complete body surface. To implement a TSET technique, one has to optimize a variety of parameters. Monte Carlo simulation of TSET can facilitate this optimization. The aim of this study was to commission and optimize a TSET technique using the 4 and 6 MeV electron and the high dose rate facility on the Elekta Precise accelerator. The EGS4nrc/BEAMnrc Monte Carlo code was used. The beam data were calculated and measured at two different scoring planes for a single beam. The Model was validated by comparing the simulation with measurements. Two different vertical angles were used to obtain a uniform dose. The angle was optimized for best dose uniformity. The Rando phantom is placed on a rotating platform and rotates 60 degrees apart to facilitate the six patient position orientations. The doses delivered in a phantom by complete treatment were measured with Kodak EDR2 films and TLDs. The dose distribution varied among various scanning directions by 2 - 3 mm and 3 - 4 mm for 4 and 6 MeV respectively. The composite percentage depth dose of all six dual fields for the 4 and 6 MeV yielded an R80 of ~4 mm and ~6 mm, respectively. Dose uniformity was ±6% for 4 MeV and ±5% for 6 MeV. The bremsstrahlung contamination was 0.9% - 1.3%. Good agreements were found with published literature and inline with international protocols.
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