Utilization of Marble Dust for Improving The Geotechnic Characteristics Of Collapsible Soil

An environment friendly and cost effective factor of collapsible soil stabilization with the help of industrial waste has been widely adopted in this research. Buildings which are constructed on collapsible soils are subjected to large deformations and shear failure. Collapsible soil can be broadly categorized as those soils susceptible to a large reduction in volume upon wetting. The mechanism usually involved in rapid volume reduction entails breaking of bonds at coarse particle contacts by weakening of fine grained materials brought there by surface tension in evaporating water. This research presents the effects of using marble dust on the geotechnical properties of Collapsible soil as a new stabilizing technique. A series of experimental tests are carried for samples of collapsing soil with and without stabilization using marble dust for dry and soaked conditions. The collapsible soil was mixed with marble dust at different contents of (0, 10, 20, 30%,40% and 50%). The results indicated that, The optimum water content decreases by 20.67% at marble content of 50%, liquid limit decreses by35.41% at marble content of 50% and frictional angle for soaked soil decreases by 66.09% at marble content of 50% while un soaked soil decreases by54.68% at marble content of 50%. The maximum dry density increases 5.91% at marble content of 50% and cohesion for soaked increases 314.2% at marble content of 50% while un soaked soil increases 206.7% at marble content of 50%. It has been found that the adopted marble has a good effect in controlling the collapsing potential which is reduced by as much as 64.32% at marble content of 30%

Jamming Intrusions in Extreme Bandwidth Communication: A Comprehensive Overview

As the evolution of wireless communication progresses towards 6G networks, extreme bandwidth communication (EBC) emerges as a key enabler to meet the ambitious key performance indicator set for this next-generation technology. 6G aims for peak data rates of 1 Tb/s, peak spectral efficiency of 60 b/s/Hz, maximum bandwidth of 100 GHz, and mobility support up to 1000 km/h, while maintaining a high level of security. The capability of 6G to manage enormous data volumes introduces heightened security vulnerabilities, such as jamming attacks, highlighting the critical need for in-depth research into jamming in EBC. Understanding these attacks is vital for developing robust countermeasures, ensuring 6G networks can maintain their integrity and reliability amidst these advanced threats. Recognizing the paramount importance of security in 6G applications, this survey paper explores prevalent jamming attacks and the corresponding countermeasures in EBC technologies such as millimeter wave, terahertz, free-space optical, and visible light communications. By comprehensively reviewing the literature on jamming in EBC, this survey paper aims to provide a valuable resource for researchers, engineers, and policymakers involved in the development and deployment of 6G networks. Understanding the nuances of jamming in different EBC technologies is essential for devising robust security mechanisms and ensuring the success of 6G communication systems in the face of emerging threats

A deep convolutional structure-based approach for accurate recognition of skin lesions in dermoscopy images

One-third of all cancer diagnoses worldwide are skin malignancies. One of the most common tumors, skin cancer can develop from a variety of dermatological conditions and is subdivided into different categories based on its textile, color, body, and other morphological characteristics. The most effective strategy to lower the mortality rate of melanoma is early identification because skin cancer incidence has been on the rise recently. In order to categorize dermoscopy images into the four diagnosis classifications of melanoma, benign, malignant, and human against machine (HAM) not melanoma, this research suggests a computer-aided diagnosis (CAD) system. Experimental results show that the suggested approach enabled 97.25% classification accuracy. In order to automate the identification of skin cancer and expedite the diagnosis process in order to save a life, the proposed technique offers a less complex and cutting-edge framework

Accurate metaheuristic deep convolutional structure for a robust human gait recognition

Gait recognition has become a developing technology in various security, industrial, medical, and military applications. This paper proposed a deep convolutional neural network (CNN) model to authenticate humans via their walking style. The proposed model has been applied to two commonly used standardized datasets, Chinese Academy of Sciences (CASIA) and Osaka University-Institute of Scientific and Industrial Research (OU-ISIR). After the silhouette images have been isolated from the gait image datasets, their features have been extracted using the proposed deep CNN and the traditional ones, including AlexNet, Inception (GoogleNet), VGGNet, ResNet50, and Xception. The best features were selected using genetic, grey wolf optimizer (GWO), particle swarm optimizer (PSO), and chi-square algorithms. Finally, recognize the selected features using the proposed deep neural network (DNN). Several performance evaluation parameters have been estimated to evaluate the model’s quality, including accuracy, specificity, sensitivity, false negative rate (FNR), and training time. Experiments have demonstrated that the suggested framework with a genetic feature selector outperforms previous selectors and recent research, scoring accuracy values of 99.46% and 99.09% for evaluating the CASIA and OU-ISIR datasets, respectively, in low time (19 seconds for training)

The Effect of Learning Package on Knowledge and Practice of Women's Regarding Osteoporosis in Port Said City, Egypt.

Osteoporosis is a major and growing public health problem in both sexes but particularly in women which associated with fragility fractures at the hip, spine, and wrist. Hip fracture contributes to both morbidity and mortality in the elderly. Approximately 1.6 million hip fractures occur each year worldwide, the incidence is set to increase to 6.3 million by 2050. It is a systemic skeletal disorder, characterized by reduction of bone mass, deterioration of bone structure, increasing bone fragility, and increasing fracture risk. It is a major cause of fractures in elderly, resulting in pain, disability, costly rehabilitation, poor quality of life, and premature death .Data survey from the Egyptian national nutrition institute to determine bone mass density (BMD) among the elderly in 2001 and, among adolescents and adults in 2004 revealed that (16.7%) of 1190 Egyptian menopausal females had lumbar osteoporosis. Aim: The present research was designed to assess effect of learning package on knowledge and practice of women's regarding osteoporosis in Port Said City .This intervention study was at the gynecological and obstetric clinic at Port Said general hospital. Study sample composed of 129 women. Tools: Data were collect using interview questionnaire sheet contains 4 main parts based on literature review & modificated tool to assess knowledge and practice of women's regarding osteoporosis in Port Said City. Results: The study found that the majority of studied women have poor knowledge regarding osteoporosis. Also, revealed a highly statistically significant difference between pre and post program in relation to knowledge about calcium p- value (0.003) and total knowledge score p- value (0.002).and there was  statistically difference between pre and post program in relation to walk more than 10 min in sun daily and practice physical exercise p- value =(0.021 and 0.0007) respectively. And there was statistically difference between pre and post program in relation to walk more than 10 min in sun daily and practice physical exercise p- value =(0.021 and 0.0007) respectively Conclusion: The present study concluded that the family needs to improve their knowledge and practice regarding prevention osteoporosis Recommendations: It is recommended to design and implement educational trials to change and improve women lifestyle to prevent osteoporosis. Also long-term effects of such educational programs should be assessed. Women should also be aware of their risks factors for developing osteoporosis. Keywords: learning package, knowledge, practice, women, osteoporosi

Photometric and Spectroscopic Analysis of the SX Phe Star BL Cam

In the present paper, we report the photometric and spectroscopic observations obtained by the 1.88 m telescope at the Kottamia astronomical observatory of the pulsating star BL Cam. Fourier analysis of the light curves reveals that the fundamental mode has two harmonics. The O-C method is used to establish the period changes. So far, the analysis has been very successful in mapping the pulsation amplitude of the star across the instability strip. By using the formalism of Eddington and Plakidis (1929), we found significant results and strong indications of the evolutionary period change. A total of 55 new maximum light timings are reported. New values of (1/P) dP/dt are estimated using the O-C diagram based on all newly obtained times of maximum light combined with those taken from the literature, assuming the periods are decreasing and changing smoothly. To compute the effective temperature and surface gravity of the star, we performed model atmosphere analysis on its spectra. The physical parameters of the star are calculated and compared with the evolutionary models

Safety performance of school buses in the State of Qatar

School buses and minibuses are one of the major modes of traveling for students in the state of Qatar. Many studies pointed to the fact that school buses travelling are safer for students than walking or car riding (Bolte, et al., 2000; Hinch, et al., 2002). For that reason, safety measures and performance of school buses in the State of Qatar should be studied and evaluated carefully and wisely. The project aims were done through merged qualitative and quantitative methods. Initially a safety checklist was constructed for school buses and a comprehensive schools map to evaluate of the current safety measures in school buses and to understand the conditions around the surrounding areas like the location of the bus stops and the availability of signage. Then, the second step focuses on conducting a survey for school bus drivers, school bus guides, students, and parents. Finally, the third steps compares between the school bus safety strategies followed in the State of Qatar and the strategies followed in other high income countries. The results of the field visits revealed many very important statistics for all surveys on the safety of school bus and the surrounding areas as well as the behavior of students and drivers. The results revealed that most of the parents are not happy with the safety while loading and unloading and with the safety procedures. In addition, 43% of school bus users didn't attend any training or workshops about the safety procedures in school bus. References: [1] Bolte, K. et al., 2000. Simulations of Large School Bus Crashes. [Online] Available at: http://papers.sae.org/2000-01-0469/ [Accessed 10 october 2014]. [2] Hinch, J. et al., 2002. School Bus Safety: Crashworthiness Research, Washington: National Highway Traffic Safety Administration.Qscienc

An electrical equivalent circuit to simulate the output power of an AlGaAs/GaAs planar Gunn diode

The planar Gunn diode offers the potential of microwave, milli-metric and THz based oscillator which can be fabricated as part of a microwave monolithic integrated circuit (mmic). To-date the RF output power has been too low for many applications. This paper looks at a simple electrical equivalent circuit model representation of an aluminium gallium arsenide (AlGaAs) based planar Gunn diode with an active channel length of approximately 4μm and width of 120μm. The model indicated a maximum RF output power of +5dBm compared with published experimental results of –19dBm for similar diodes

An electrical equivalent circuit to simulate the output power of an AlGaAs/GaAs planar Gunn diode

The planar Gunn diode offers the potential of microwave, milli-metric and THz based oscillator which can be fabricated as part of a microwave monolithic integrated circuit (mmic). To-date the RF output power has been too low for many applications. This paper looks at a simple electrical equivalent circuit model representation of an aluminium gallium arsenide (AlGaAs) based planar Gunn diode with an active channel length of approximately 4μm and width of 120μm. The model indicated a maximum RF output power of +5dBm compared with published experimental results of –19dBm for similar diodes