Noise uncertainty effect on multi-channel cognitive radio networks

Achieving high throughput is the most important goal of cognitive radio networks. The main process in cognitive radio is spectrum sensing that targets getting vacant channels. There are many sensing methods like matched filter, feature detection, interference temperature and energy detection which is employed in the proposed system; however, energy detection suffers from noise uncertainty. In this paper a study of throughput under noise fluctuation effect is introduced. The work in this paper proposes multi-channel system; the overall multi-channel throughput is studied under noise fluctuation effect. In addition, the proficiency of the network has been examined under different number of channels and sensing time with noise uncertainty

Simple Analysis Used in Diagnosis and Follow-up of Schizophrenic Patients (Patent)

Dopamine acts as neurotransmitter in the central and peripheral sympathetic nervous system. Determination of dopamine (DO) was performed by spectrophotometric analysis depending on the formation of new colored compound. The proposed procedure was efficient in quantitative determination of DO as pure material in pharmaceutical preparations and in urine samples. DO concentration in urine sample of patient confirms the affection with schizophrenia and the proposed procedure was used to facilitate diagnosis and followup of schizophrenic patients. It is recommended to apply the proposed procedures as routine analysis in pharmaceutical companies for quality control and in analytical laboratories to diagnose and follow up schizophrenia

CRIOSPHINX STELA FROM TELL HEBOUA - NORTH SINAI

[En] A rectangular stela was found in the vicinity of Tell Heboua I by accident early 2020. The stela was uncovered 500 m to the west of the fortification walls of Heboua I, during a land reclamation project which is going on at the western vicinity of Tell Heboua I. Our well-trained guard Hassan al-Masody, recognized the limestone slab on top of the embankment of a small drainage canal. When turning this recognizable piece of stone, he found it to be decorated of a limestone stela. Inscribed materials that were discovered at Heboua area are still limited compared to the long history of the site and the extensive and continuous archaeological work done. This obviously due to the scarcity of the stone at this sandy remote area. In addition, every piece of stone in the North Sinai archeological sites was taken from its original place and reused along the history till now. [Ar] لوحه من تل حبوة-شمال سيناء لوحة مستطيلة الشكل عثر عليها مصادفة فى أوائل عام 2020. وذلك على بعد 500 متر إلى الغرب من الجدران المحصنة لمدينة ثارو - حبوة 1 ، واللوحة من الحجر الجيري الابيض تم العثور عليها مكسورة الى قطعتين من المنتصف ، وكانت فى حالة سيئة وتم ترميمها مبدئيا فى الموقع. ظهر اللوحة خشن به العديد من علامات الأزميل المحفورة. تم تزيين اللوحة بنقوش غائرة. تمثل زخرفة اللوحة أحد العناصر الرئيسية التى تشير إلى صورة أسد راقد برأس كبش criosphinx مع حامل قرابين فى المقدمة. يمكن التعرف على الكبش على أنهOvis platyura aegyptiaca بناءً على القرون المنحنية للأمام. كبش بلاتيورا ، المخلوق المقدس البارز لآمون ، أصبح أحد أكثر الحيوانات قداسة فى مصر القديمة من خلال ارتباطه بالإله آمون ، الذي كان ، مثل آمون رع ، الإله البدائى والإله الأعلى للآلهة المصرية ، تاجه يرمز إلى السماء ، ويتكون من تاج يعلوه ريشتان مرتفعتان. لا يوجد نص على اللوحة ؛ يمكن تصنيفها على أنها لوحة نذرية ، وهى لا تحتوى على صورة الشخص الذى وهبها ولكن مثل عليها الاله فقط. ومن المرجح طبقا لما عثر عليه فى منطقة تل حبوة 1 انها تؤرخ بعصر الدولة الحديثة

Geochemical Records Linking Plate Tectonics with Mantle Dynamics: Neoproterozoic and Beyond

This Ph.D. thesis investigates Earth’s dynamic evolution through geological time by addressing possible linkages between the evolution of the Earth’s mantle and crustal growth, plate tectonics, and superplume-supercontinental cycles. This is achieved through deciphering the geochemical records of mantle-derived/related rocks that characterised the Earth’s mantle evolution and processes at global-, regional- and micro- to nano-scales

Improve Quality of Smart Universities through Information Technology Infrastructure Library Methodology

This paper focuses on educational institutions are increasingly seeking innovative ways to enhance the quality of their services. Smart universities, a product of this technological evolution, aim to provide students with cutting-edge educational experiences. One of the pivotal factors in achieving this goal is the effective management of Information Technology (IT) services. The Information Technology Infrastructure Library (ITIL) methodology is recognized worldwide as a robust framework for IT service management. Its principles and best practices have been successfully applied in various sectors to optimize processes, enhance service quality, and ensure efficient resource utilization. Given the ever-growing reliance on IT within educational institutions, implementing ITIL in smart universities has the potential to significantly elevate the quality of education. This paper explores the vital role that the ITIL methodology plays in improving the quality of smart universities. It delves into how the principles and practices of ITIL can be strategically integrated into the operational fabric of higher education institutions. By leveraging ITIL, universities can not only bolster their IT service management but also enrich the overall educational experience for students, ultimately contributing to the realization of truly smart and technologically advanced learning environments

Doxycycline: a new treatment option for COVID-19

No abstract

Stress, anxiety, depression among medical undergraduate students at Benha University and their socio-demographic correlates

Background: Medical students display poorer mental health when compared to equivalent peers. Learning environment, educational debt, hard workload, and sleep disturbance make them more liable for mental disorders as anxiety and depression.Objective: The aim of the current work was to determine prevalence and factors associated with depression, anxiety and stress among medical students.Patients and Methods: A cross-sectional study using a self-administered questionnaire was distributed to students in the six grades at Benha Faculty of Medicine. Students were chosen by stratified random sample technique. The total participants were 597.Results: Out of included students; 88.8%, 82.6% & 82.7% experienced depression, anxiety, and stress respectively. A statistically significant difference between smokers and non-smokers (14.3±4.9&11.5±5.6 respectively) was found regarding depression score. The mean anxiety and stress scores were significantly higher between females (9.78±5.4 & 13.03±4.9 respectively) than males. The third grade had the highest mean of anxiety and stress score (10.1±4.8, p value =0.03 &14.02±3.9, p value =0.000 respectively). There was a statistically significant difference in depression and anxiety scores as regarding Personal income. There were statistically significant associations between student average achievement score, social activity, transportation and mean score of depression, anxiety, stress.Conclusion: It could be concluded that medical students experienced high degrees of depression, anxiety, and stress. Smoking, female gender, personal income, achievement score were significantly associated with mental problems

Two Spectrophotometric Assays for Dopamine Derivatives in Pharmaceutical Products and in Biological Samples of Schizophrenic Patients Using Copper Tetramine Complex and Triiodide Reagent

Two simple, rapid, and sensitive spectrophotometric methods are proposed for the determination of levodopa (LD). The first method is based on coupling of 4-aminoantipyrine (4-AAP) with one of the dopamine derivatives (LD, CD) to give a new ligand that reacts with copper tetramine complex to give intensely colored chelates. The colored products are quantified spectrophotometrically at 525 and 520 nm for LD and CD, respectively. The optimization of the experimental conditions is described. The method has been used for the determination of 19.7–69.0 and 18.1–54.3 μg mL(−1) of LD and CD, respectively. The accuracy of the method is achieved by the values of recovery (100 ± 0.2%) and the precision is supported by the low standard deviation (SD = 0.17–0.59) and relative standard deviation (CV = 0.4%–1.54%) values. The second method is based on the formation of ion-pair iodinated inner sphere or outer sphere colored complexes between the LD and triiodide ions at pH 5 and room temperature (23 ± 3(°)C). This method has been used for the determination of LD within the concentration range 39.44–78.88 μg mL(−1) with SD = 0.22–0.24 and recovery percent = 100 ± 0.3%. The sensitivity of the two methods is indicated by Sandell's sensitivity of 0.014–0.019 g cm(−2). The results of the two methods are compared with those of the official method. The interference of common drug additives, degradation products, and excipients was also studied. The proposed methods were applied successfully to the determination of the LD-CD synthetic mixture and Levocare drug. The determination of LD in urine of some schizophrenic patients was applied with good precision and accuracy. The reliability of the methods was established by parallel determinations against the official British pharmacopoeia method

Health Promotion Program among Breast Cancer Clients Receiving Chemotherapy in South Governorates in Gaza

Worldwide breast cancer was the second most common cancer when men and women were analyzed together. It is estimates there were 1.5 million new cancer cases in the United States in 2010 and 569,490 deaths. In Palestine the top cancer incidence among women is cancer breast.The aim of this study is to evaluate the effects of health promotion program among breast cancer clients during their chemotherapy in south governorates of Gaza Strip. Aquai-experimental design (pre-test/post-test)was used in this study; The study sample was 50 subjects were selected randomly from European Gaza Hospitals oncology outpatient clinic. Tools and data collection:  1-Structured interviewing questionnaire was used to collect data on socio-demographic characteristics, 2-(pre-test post-tool) based on Pender,s model which related to knowledge and practice, life style, physical activities, psychological and social role performance. The educational program was delivered Individual health promotion program comprised two teaching interviews with five sessions, scheduled over two weeks of clients visit. Results revealed that there was statistical significant difference between pre and post test in health promotion program in most variables related to clients knowledge about breast cancer and it’s treatment side effect, benefits of nutrition and exercise during chemotherapy course, either the result illustrate significant improvement in physical , psychological and social role performance  and practice after the health promotion program. The study results concluded and recommended that:- The health promotion program for breast cancer clients under chemotherapy had improve the knowledge and practice concerning the side effects, and management of breast cancer  as physical, psychological activities ,life style, and social role performance .Establish special oncology nursing courses for all nurses whom working with cancer clients to increase their knowledge and practice in how to deal and care of cancer client who under chemotherapy treatment. .Keywords: health promotion program, breast cancer, chemotherapy side effects,. south governorates in Gaza