Characterization of Unsaturated Soils Using Elastic and Electromagnetic Waves

Recent advances in laboratory instruments and techniques enabled researchers to explore new aspects of the behavior of geomaterials and perform measurements that would be otherwise impossible to acquire using traditional geotechnical laboratory techniques. This dissertation is focused on utilizing elastic and electromagnetic wave measurements and SMCT imaging to non-destructively characterize different aspects of the behavior of unsaturated soils. A model that relates P-wave velocity in soils to the volumetric water content was used to develop a new methodology to determine the in situ density and moisture content of soils. It was numerically and experimentally verified to assess it validity and range of applicability. On the other hand, a triaxial apparatus that enables the measurement of P- and S- wave velocities in unsaturated soil specimens under controlled net stress and matric suction was also developed. Several verification experiments were performed using the apparatus and the results were compared to theoretical models as well as previous experimental results. Moreover, a drying cell was used to examine the effect of the presence of fine clay and silt particles on the elastic waves` velocity and the small strain stiffness of unsaturated soils. The results were confirmed by analyzing SMCT images of similar samples at different drying stages. The proposed methodology yielded good predictions of the density and the moisture content of soils. However, different experimental and numerical error sources caused the predicted density and moisture content values to slightly differ from the measured values. For the majority of the tested specimens, the density was estimated within ±10% of the measured values while the water content was estimated within ±20%. On the other hand, the experimental results from the new triaxial apparatus showed a significant effect of matric suction on the recorded wave velocities. It was also documented that wave velocity values increase with increasing percentage of fine silt particles in the specimens. The results of the drying cell experiments as well as the SMCT image analysis showed the profound effect of the presence of fine silt and clay particles on the small strain stiffness of unsaturated soils. The density of the pore fluid increased during drying due to the higher fine concentration. The concentration of fine particles was found to be significantly higher at areas close to the interparticle contact than in pore bodies away from the contacts causing an increase in the interparticle contact stiffness

Assessment of shearing phenomenon and porosity of porous media using microfocus computed tomography

Microfocus x-ray computed tomography (μCT) is a powerful non-destructive scanning technique to study the internal fabric of granular materials. In this thesis, μCT was applied to two cases. The first case involves studying the behavior of particles in a triaxial specimen during shearing. Three-dimensional translation and rotation of the particles were tracked throughout the shearing process, and they were used to calculate the local strain distributions. Moreover, the local dilatancy angle distribution was calculated throughout experiment. These distributions were compared to study the changes in the behavior of the particles at different stages of the test. It was noticed that the radial strains εx and εy showed a similarity due to the axisymmetric conditions. It was also found that high rotation angles took place, where the vertical rotation component reached up to 30 degrees and the horizontal rotation reached up to 60 degrees. Furthermore, the rotation strain component reached up to about 50% at the end of the test. On the other hand, a wide range of local dilatancy angles was observed, where the values varied between -50 degrees and 70 degrees. The second part of this thesis aims at determining the effect of grain size distribution and consolidation pressure on the spatial porosity distribution of synthetic rock cores. Twelve rock cores were prepared with different grain size distributions and consolidation pressures, and scanned using a high resolution μCT system. Density calibration was conducted to correlate the CT numbers to the bulk density, and the porosity of the cores. 15 million porosity values were calculated for each core. μCT showed an excellent ability to track the changes in the local porosity distribution of the cores. It was found that grain size distribution has a larger effect on the porosity values, where a noticeable decrease in the porosity values was observed when using well graded grains. On the other hand, increasing the consolidation pressure did not always decrease the porosity values. This could be due to the crushing of the particles at very high consolidation pressures

Saudi Food Industry Value: Profile Disclosure, Profitability, and Sustainable Supply Chain Effects

The purpose of the current research is to examine the impact of industry profile, profitability, and sustainable supply chain on the value of the firm. The firms success is directly related to the efficiency of its supply chain. This research was conducted on firms that typically trade on the Saudi Stock Exchange as belonging to the food industry. Purposive sampling was used in this study to show the sample. In addition, the data collected in this study from the annual report for 20 firms, for three years (2019-2021). This study finds that the Profitability, and Reports of Sustainable supply chain of the firm affect the firm value, and these results are consistent with the perspective of Stakeholder and Agency Theories. However, the firms value is unaffected by the industry profile

Information Technology Governance Control Level in Jordanian Banks Using: Control Objectives for Information and Related Technology (COBIT 5)

Information technology is considered a sensitive part for most strategies in the global market competition. There are plenty of factors indicating expansion in the world of information technology, the matter that places greater demands on the control of the environment for information technology and augments the need to mitigate risk and cost control related to the IT environment information.  Hence, the importance of emphasizing the horizons of information, and the existence of effective controls on the IT environment should be designed for information technology services used by several parties, managers, auditors and owners. This should facilitate controls and offer the opportunity to re - engineer the applications of the existing regulatory environment, which requires a comprehensive review and redesign of the regulatory controls. To respond to any changes in the business environment, executives must ensure that information technology works with the greatest possible efficiency to help achieve goals and objectives. Growing competitive advantage, ensuring compliance and continuity, security and privacy are essential in order to achieve effective management for Information Technology related risks as well as maximal benefits in technology investment. Keywords: Business goal, Enterprise Governance of IT, IT governance, Organizational structure, Risk management

ERP II Readiness in Jordanian Industrial Companies

Enterprise systems have evolved in the last three decades from MRP (material requirements planning), MRP II and ERP (enterprise resource planning) to ERP II in the turn of the century. ERP II integrates the core ERP system with specialized solutions in SCM (supply chain management), SRM (supplier relationship management), CRM (customer relationship management), PRM (partner relationship management) and KM (knowledge management), enabled by e-business technologies. This research investigates the readiness of Jordanian industrial companies for ERP II implementation via an empirical study using a self-administered questionnaire. The study results revealed that the Jordanian industrial companies have all of the ERP II components with the exception of CRM and PRM, while suffering from significant integration deficiency, and lacking KM and BI (business intelligence) support. The findings of this study shall encourage the Jordanian industrial companies to review their ERP II integration strategies to maximize the IT investment return

H.A.F Technique for Documents and Archaeologist Images Encryption

The Encryption important Images like documents and archaeologist images area became extremely important now days , so that is why proposed new technique called H.A.F(Hind ,Ali and Farah) to encrypt image with complex steps to make it hard on hackers to hacked it , which need to reverse the block exchange then should be try to decrypt image by inverse math module use specific keys , these keys created using many probability with specific criteria . in this paper have twice keys with shifting blocks of images , in additional encryption method will apply on parts not the entire image . Experimental result and security analysis indicates the robustness and advantages of the new proposed algorithm. Technique is possible to reproduce the original image with no loss of information for the encryption and decryption process. It is fast and simple enough to be comparable to other recent methods, and it has passed all the security requirements and it is fast and secure to be used in very broad range of documents and archaeologist images encryption applications

The Relationship Between Social Intelligence With Classroom Discipline Strategies Used among a Sample Of Secondary School Teachers العلاقة بين الذكاء الاجتماعي وبين استراتيجيات الانضباط الصفي المستخدمة لدى عينة من معلمي المرحلة الثانوية

Abstract: This study aimed to explore the level of social intelligence among a sample of secondary school teachers of the first educational district in Zarqa. It tried also to explore the classroom discipline strategies adopted by those teachers. In addition it tried to study the relationship between social intelligence and classroom discipline strategies.The sample consisted of (350) secondary school teachers. To achieve the objectives of the study ( Tromso Social Intelligence-TSTS) was used, and a scale for measuring the classroom discipline strategies was developed.The results of the study showed that the level of social intelligence among teachers was high and authoritative style is the most commonly among teachers with a high level followed by permissive style and authoritarian style with a moderate level. The results also showed positive correlation between the social intelligence and Authoritative style, and a negative correlation was found between the social intelligence and Permissive style and Authoritarian style as discipline strategies. ملخص: هدفت الدراسة الحالية للكشف عن مستوى الذكاء الاجتماعي لدى عينة من معلمي المرحلة الثانوية في مديرية تربية وتعليم الزرقاء الأولى, كما سعت أيضا للكشف عن استراتيجيات الضبط الصفي المستخدمة لديهم، فضلاً عن الكشف عن العلاقة بين مستوى الذكاء وعلاقته باستراتيجيات الانضباط الصفي إذ تكونت العينة من (350) معلماَ ومعلمة. ولتحقيق أهداف الدراسة تم استخدام مقياس ترومسو للذكاء الاجتماعي (Tromsø Social Intelligence Scale-TSIS)، وتم إعداد مقياس استراتيجيات الضبط الصفي. وأظهرت النتائج أن مستوى الذكاء الاجتماعي لدى المعلمين جاء بدرجة مرتفعة على أبعاد الذكاء الاجتماعي (معالجة المعلومات الاجتماعية، المهارات الاجتماعية، الوعي الاجتماعي) وان النمط الديمقراطي هو الأكثر استخداما لدى المعلمين وجاء بدرجة مرتفعة يليه النمط التسلطي الذي جاء بدرجة متوسطة ومن ثم النمط المتساهل الذي جاء أيضا بدرجة متوسطة. كما أظهرت النتائج وجود علاقة إرتباطية ايجابية بين الذكاء الاجتماعي والنمط الديمقراطي، وعلاقة إرتباطية سالبة بين الذكاء الاجتماعي وكل من النمط التسلطي والنمط المتساهل كاستراتيجيات الانضباط الصفي

A case report: Pseudomonas luteola presenting with liver mass containing necrosis, sub-phrenic and pleural fluids in otherwise healthy young woman

Pseudomonas luteola is agram-negative bacillus rarely causing human infections.However, Reports have been building up on different types of infections caused by this potentially emerging microorganism. Here we report a case of liver mass with necrosis, sub-phrenic and pleural effusions

Size Optimization of 3D Stereoscopic Film Frames

3D stereoscopic film has inherently the problem of large frame size that many 3D images compression algorithms already investigated for exploiting complex method, outputting poorly displayed frame, andtakings a long processing time. Consequently, this paper presents the development of a unique technique of clipping the redundant areas from the frames that do not appear in 3D stereoscopic film which delivered side-by-side (SbS) format over anorthodox packet-based network. This implies reducing the size of the 3D film with natural depth perception