CLOUD COMPUTING AND ITS EFFECT ON PERFORMANCE EXCELLENCE AT HIGHER EDUCATION INSTITUTIONS IN EGYPT (AN ANALYTICAL STUDY)

This period is marked by current financial crisis and challenges related to many growing needs. Consequently, universities are facing problems in providing necessary information technology (IT) support for fulfilling excellence in performance. More specifically, the best practices of Cloud Computing need to be considered within higher education institutions. Therefore, the current study aimed at investigating cloud computing, in terms of: (1) definition; (2) its most important principles; (3) models; and (4) benefits of its use to fulfill performance excellence in higher education institutions. This involves shedding light on cloud computing models and the possibility of its use in higher education institutions, and exploring the effect of using cloud computing in achieving performance excellence there. Additionally, the study aimed at clarifying the challenges and obstacles that face cloud computing. To reach these objectives, the researchers employed a qualitative research methodology for collecting and analyzing data. The study concluded some results, most important of which are: (1) there is a significant relationship between cloud computing and excellence of performance as cloud computing mainly aims at achieving tasks quickly with the least effort and cost. Personnel, customers, innovation and leadership are the core elements to achieve excellence in higher education institutions, and are major components of cloud computing. These positive results support the use of Cloud-Computing solutions in universities and improving knowledge in this field and providing a practical guide adaptable to the university structure

Optimized Clustering Protocol for Balancing Energy in Wireless Sensor Networks

While wireless sensor networks (WSNs) are increasingly equipped to handle more complex functions and in-network processing may require these battery powered sensors to judiciously use their constrained energy to prolong the effective network lifetime. Cluster-based Hierarchical Routing Protocol using compressive sensing (CS) theory (CBHRP-CS) divides the network into several clusters, each managed by a set of CHs called a header. Each member of the header compresses the collected data using CS. This paper proposes an optimized clustering protocol using CS (OCP-CS) to improve the performance of WSNs by exploiting compressibility. In OCP-CS, each cluster is managed by a cluster head (CH). CHs are selected based on node concentration and sensor residual energy, and performs data aggregation using CS to reduce the energy consumed in the process of data sampling and transmission. Simulations show that our proposed protocol is effective in prolonging the network lifetime and supporting scalable data aggregation than existing protocols

GAMBE: GAMma Blind neutron Efficient detector

Thermal neutron detectors, which are based on semiconductor material such as silicon coated with neutron reactive material like 10B and 6Li have been discussed for many decades. The performance of the thermal neutron detector system, GAMBE, which is based on two silicon sensors in a sandwich configuration is investigated. The results show that a single sandwich design with 6LiF film of (1.5 ± 0.6) mg/cm2 thick can achieve a total ("tn) and a coincidence ("cn) detection efficiency of 4% and 1% respectively. While, 6Li foil of (40 ± 10) μm thick is able to attain a ("cn) of (1.5 ± 0.9)% and a ("tn) of (9.2 ± 1.4)%. The coincidence that defines a true neutron hit is the simultaneous signal recorded by the two sensors facing the conversion layer. These coincidences provide a very good method for rejecting spurious hits coming from gamma-rays, which are usually present in the neutron field under measurement. This methodology results in a high gamma-ray rejection factor of 108. However, the price to pay is a reduction of the detection efficiency of the single sandwich detector. The thermal neutron detection efficiency of the detector is enhanced by using a stacked detector configuration and highdensity polyethylene (HDPE) sheets, as neutron moderators and reflectors. The GAMBE detector is positioned inside a box of HDPE with a lead window in the direction of the neutron flux for neutron moderation and a reduction of the effect of gamma-rays on the detector. The experimental layout was modeled in MCNP4C to investigate the contribution of HDPE to the thermal neutron flux (n/s/cm2). In this research, a stack of 4 silicon semiconductor sensors with two 6LiF films of an average thickness of (2.8 ± 0.6) mg/cm2 in a configuration of two sandwiches is shown to achieve a total and a coincidence detection efficiency of (27 ± 3)% and (4 ± 1)% respectively. This represents a significant improvement compared to a single detector. The effect of these stacked detectors for the development of a handheld thermal neutron detector, using 4 coated Si detectors is shown to have a 22% efficiency. Finally, this information is used to inform the optimised design of the handheld detector. The results based on GEANT4 and MCNP4C simulations indicate that the total detection efficiency of this portable detector with a stack of 7 sandwich detectors will increase up to 52% by using an optimal thickness of a 6LiF film of 17 μm (3.95 mg/cm2). This handheld detector has a highest total detection efficiency of 69% when using a 6Li foil of 36 μm thick

Outcomes of Karydakis Flap versus Modified Bascom Technique in Treatment of Pilonidal Sinus Disease

Background: Pilonidal sinus disease is a common surgical concern for 20- and 30-year-old males. Surgery is the most acceptable management. Surgical recurrence and wound infections are rare especially with Wide excision. It leaves a large midline incision that takes months to heal and may lower quality of life. The optimal therapy is debatable. Karydakis flap and Modified Bascom are two promising surgical techniques. Objectives: The aim of this study is to evaluate early postoperative outcomes and satisfaction of patients with Pilonidal Sinus (PNS) who underwent either Karydakis flap or Modified Bascom Cleft Lift Procedure at our Department. Patients and methods: From March 2022 to January 2023, Qena University Hospitals, South Valley University performed a randomized control experiment on 60 pilonidal sinus patients. Metronidazole was administered intravenously before 30 min and after 6 h of all spinal anaesthetic surgeries. Results: The Karydakis group had a greater rate of infection occurrence than the Modified Bascom group (P = 0.0237), but there was no difference in drain removal, hospital stay, post-operative discomfort, or pain. Modified Bascom group required significantly longer time for painless defecation than Karydakis group (P = 0.01773). Both research groups had good to excellent post-operative patient satisfaction. Conclusion: Both methods are effective in management of Pilonidal Sinus with no huge distinction. Modified Bascom Technique has a lower risk of infection. However, Karydakis Flap was better to achieve painless defecation in a shorter period of time

Synthesis, spectroscopic and thermal characterization of quinoxaline metal complexes

The coordination behaviour of the quinoxaline ligand with N and O donation sites, derived from 3-(2-oxo-2-p-tolylethyl)quinoxalin-2(1H)-one (HL), towards some transition metal ions namely Mn(II), Fe(III), Co(II), Ni(II), Cu(II) and Zn(II) are reported. The metal complexes are characterized based on elemental analyses, IR, 1H NMR, solid reflectance, magnetic moment, molar conductance and thermal analyses (TG, DTG and DTA). The ionization constants of the quinoxaline ligand as well as the stability constants of its metal chelates are calculated spectrophotometrically at 25 oC and ionic strength = 0.1 M (1M NaCl). The chelates are found to have octahedral structure. The ligand and its chelates are subjected to thermal analyses and the different activation thermodynamic parameters are calculated from their corresponding DTG curves to throw more light on the nature of changes accompanying the thermal decomposition process of these compounds. The biological activity of the synthesized ligand and its metal complexes also are screened against the desert locust Schistocerca gregaria (Forsk) (Orthoptera-Acrididae) and its adult longevities. They showed remarkable biological activity

ISOLATION AND IDENTIFICATION NORMAL FLORA BACTERIA FROM DIFFERENT AREAS OF NINAVA GOVERNORATE

ABSTRACT: In this study, different types of bacteria were isolated and diagnosed from soils collected from different areas of Ninava governorate, new strain of bacteria was discovered, based on biochemical tests and genetic examination (16S rRNA) and the strain was recorded under accession number (MW690182) in the Gene Bank (NCBI). The isolated bacteria were Bacillus Subtilis strain that given new name (AHM1976) it was positive for gram stain, motility, hemolytic, beta type. Keywords: isolation; identification; normal flora bacteria.   Isolamento e identificação de bactérias da flora normal de diferentes áreas da província de Ninava, Iraque   RESUMO: Neste estudo, diferentes tipos de bactérias foram isolados e diagnosticados em solos coletados em diferentes áreas da Província de Ninava, Iraque. Foi descoberta uma nova cepa de bactéria, com base em testes bioquímicos e exame genético (16S rRNA), sendo essa cepa registrada sob o número de acesso (MW690182) no Gene Bank (NCBI). A bactéria isolada foi a cepa Bacillus Subtilis, que recebeu novo nome (AHM1976), testando de forma positiva para coloração de gram, motilidade, hemolítica, tipo beta. Palavras-chave: isolamento; identificação; bactérias da flora normal.   ABSTRACT: In this study, different types of bacteria were isolated and diagnosed from soils collected from different areas of Ninava governorate, new strain of bacteria was discovered, based on biochemical tests and genetic examination (16S rRNA) and the strain was recorded under accession number (MW690182) in the Gene Bank (NCBI). The isolated bacteria were Bacillus Subtilis strain that given new name (AHM1976) it was positive for gram stain, motility, hemolytic, beta type. Keywords: isolation; identification; normal flora bacteria.   Isolamento e identificação de bactérias da flora normal de diferentes áreas da província de Ninava, Iraque   RESUMO: Neste estudo, diferentes tipos de bactérias foram isolados e diagnosticados em solos coletados em diferentes áreas da Província de Ninava, Iraque. Foi descoberta uma nova cepa de bactéria, com base em testes bioquímicos e exame genético (16S rRNA), sendo essa cepa registrada sob o número de acesso (MW690182) no Gene Bank (NCBI). A bactéria isolada foi a cepa Bacillus Subtilis, que recebeu novo nome (AHM1976), testando de forma positiva para coloração de gram, motilidade, hemolítica, tipo beta. Palavras-chave: isolamento; identificação; bactérias da flora normal.

Impact of New Large Aircraft on Airport Flexible Pavements

The objective of the study is to evaluate the effects of New Large Aircraft (NLA) on airport flexible pavement in terms of its expected impact on pavement life. The study is conducted using Hurghada Airport air fleet composition at four hypothetical annual departure levels, four standard subgrade strength categories, and introducing NLA at five different percentages. On the basis of the results of this research, it is concluded that, where an airport has a subgrade with CBR values higher than 6%, airport authority may permit the operation of A380 up to an additional 3% of the existing annual departures without losing more than 10 to 30 percent of pavement life. For airports with CBR values less than 6%, a significant reduction in pavement life as high as 40 to 90% should be anticipated in case of introducing the A380 at 3 percent share in the traffic mix or more. In case of subgrade strength CBR less than 6%, there is a high rate of pavement life reduction due to introduction of A380 up to 2% share in the traffic mix. However, there is a low rate of pavement life reduction due to introduction of A380 from 2% and up to 5% share in the traffic mix. Keywords: Airports, New Large Aircraft, NLA, Flexible pavements, A38

ANER: Arabic and Arabizi Named Entity Recognition using Transformer-Based Approach

One of the main tasks of Natural Language Processing (NLP), is Named Entity Recognition (NER). It is used in many applications and also can be used as an intermediate step for other tasks. We present ANER, a web-based named entity recognizer for the Arabic, and Arabizi languages. The model is built upon BERT, which is a transformer-based encoder. It can recognize 50 different entity classes, covering various fields. We trained our model on the WikiFANE\_Gold dataset which consists of Wikipedia articles. We achieved an F1 score of 88.7\%, which beats CAMeL Tools' F1 score of 83\% on the ANERcorp dataset, which has only 4 classes. We also got an F1 score of 77.7\% on the NewsFANE\_Gold dataset which contains out-of-domain data from News articles. The system is deployed on a user-friendly web interface that accepts users' inputs in Arabic, or Arabizi. It allows users to explore the entities in the text by highlighting them. It can also direct users to get information about entities through Wikipedia directly. We added the ability to do NER using our model, or CAMeL Tools' model through our website. ANER is publicly accessible at \url{http://www.aner.online}. We also deployed our model on HuggingFace at https://huggingface.co/boda/ANER, to allow developers to test and use it

Assessment of Triangular Fibro-cartilaginous Complex Injuries of The Wrist Using High Resolution Ultrasound versus Magnetic Resonance Imaging

Background: Triangular fibrocartilage complex (TFCC) may be assessed using ultrasound (US) because of its wide availability, mobility, low cost, and lack of radiation. When it comes to TFCC imaging, MRI is the gold standard, although US can provide a more detailed picture of the disease. Objective: Comparing and contrasting the use of ultrasound (US) and magnetic resonance imaging (MRI) in the detection of triangular fibrocartilaginous complex injuries of the wrist. Patients and Methods: The study was conducted at the Radiodiagnosis Department, Zagazig University Hospital, Egypt. Wrist discomfort or reduced wrist mobility was reported by 35 individuals with a mean age of 39 ± 13.18 years old. Both radiologists who performed the ultrasound and the MRI were blinded to each other's results in order to minimize bias. Results: 82.9 % of patients showed normal ulnar variance while 11.4 % of patients showed positive variance and 5.7% with negative variance. The ultrasound detected 18 positive cases with TFCC injury with a percentage of 51.4%. The MRI detected 24 positive cases with TFCC injury with a percentage of 68.6%. The ultrasound detected TFCC cases with a sensitivity of 75%, specificity 100%, PPV 100 and NPV 64.7. Conclusion: It is very suggested that tendons and inflammation of the wrist could be examined by ultrasonography. In recent investigations, it was shown that US had the ability to identify injuries in the TFCC and intrinsic ligament

Hepatic venous outflow obstruction after living donor liver transplantation managed with ectopic placement of a foley catheter: A case report

AbstractIntroductionThe early hepatic venous outflow obstruction (HVOO) is a rare but serious complication after liver transplantation, which may result in graft loss. We report a case of early HVOO after living donor liver transplantation, which was managed by ectopic placement of foley catheter.PresentationA 51 years old male patient with end stage liver disease received a right hemi-liver graft. On the first postoperative day the patient developed impairment of the liver functions. Doppler ultrasound (US) showed absence of blood flow in the right hepatic vein without thrombosis. The decision was to re-explore the patient, which showed torsion of the graft upward and to the right side causing HVOO. This was managed by ectopic placement of a foley catheter between the graft and the diaphragm and the chest wall. Gradual deflation of the catheter was gradually done guided by Doppler US and the patient was discharged without complications.DiscussionMechanical HVOO results from kinking or twisting of the venous anastomosis due to anatomical mismatch between the graft and the recipient abdomen. It should be managed surgically by repositioning of the graft or redo of venous anastomosis. Several ideas had been suggested for repositioning and fixation of the graft by the use of Sengstaken–Blakemore tubes, tissue expanders, and surgical glove expander.ConclusionWe report the use of foley catheter to temporary fix the graft and correct the HVOO. It is a simple and safe way, and could be easily monitored and removed under Doppler US without any complications