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Probabilistic assessment of rock slopes stability using the response surface approach——A case study

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International Journal of Mining Science and Technology 2019年第3期29卷 357-370页

作者： Hassan Basahel hani Mitri Department of Mining and Material Engineering McGill University

This paper examines the stability condition of a jointed rock slope in the south western region of Saudi Arabia using deterministic and probabilistic approaches,under both dry and wet *** study area is characterized by complex geology in rugged *** stability analysis is carried out using the code FLAC3D to generate a 3-dimensional,ubiquitous joint model,to determine the influence of the dominant,unfavourable discontinuity orientation with respect to the slope *** deterministic analysis is first implemented using the mean values of the selected random variables,namely the dip,dip direction and friction angle of the dominant discontinuity set,and the stability condition is assessed with a factor of safety based on the classical frictional joint constitutive model.A Box-Behnken design(BBD)approach is then adopted to create the surface response function as a second order polynomial for the factor of *** do so,fifteen FLAC3D models are generated in accordance with the *** on this,10,000 simulations of different slope realizations are carried out using Monte-Carlo simulation technique,and the probability of unsatisfactory of performance of the rock slope is *** is shown that the probabilistic approach provides more insight and confidence in the stability condition of the rock slope,both under dry and steady state heavy rainfall conditions.A discussion is presented on the significance of accepting lower safety factors when heavy rainfall conditions are encountered.

关键词： Rock slope stability Box-Behnken design Probabilistic analysis of slopes Response surface

Pathogenesis of columnar-lined esophagus

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World Journal of Gastroenterology 2006年第10期12卷 1521-1528页

作者： Kamal E Bani-hani Bayan K Bani-hani Department of Surgery Faculty of Medicine Jordan University of Science and TechnologyIrbidJordan

Since its initial description, the pathogenesis of the columnar-lined esophagus （CLE） has been surrounded by many controversies. The first controversy is related to the existence of the condition itself. The second controversy centers on whether the CLE is a congenital or an acquired condition. In this article, we review the congenital and acquired theories of development of CLE and discuss the various factors in acquisition of CLE. The bulk of evidence in the literature suggests that CLE is an acquired condition.

关键词： Barrett's esophagus Risk factors Esophageal adenocarcinoma Pathogenesis Reflux esophagitis Gastroesophageal reflux

Probabilistic approach for open pit bench slope stability analysis——A mine case study

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International Journal of Mining Science and Technology 2019年第4期29卷 629-640页

作者： Christian Obregon hani Mitri Department of Mining and Materials Engineering McGill University

The geotechnical slope design of an open pit wall starts at the bench scale *** this scale,the rock slope stability is governed primarily by the geological discontinuities within the rock mass and as a result,structurally-controlled failures(***,wedge or toppling)are most likely to *** probabilistic approach offers a major advantage over the traditional deterministic method in that it accounts for the different degrees of variability and uncertainty often encountered in rock *** paper presents a bench slope stability assessment for an open pit mine in Peru using a probabilistic-based approach by coupling a kinematic analysis based on stereographic projection techniques followed by a kinetic analysis by means of the limit equilibrium ***,these two probabilities are combined to provide an overall measure of the probability of failure(PoF)of the bench slope *** case study is characterized by significant scatter in the geometrical and mechanical properties of the *** surface mapping was conducted at 36 different sites following the ISRM suggested *** direct shear tests were carried *** is shown that by combining field and laboratory measurements and engineering judgment,the probability density functions(PDF)of the discontinuity parameters can be *** are then used in a Monte Carlo simulation process to compute both kinematic and kinetic probabilities of *** overall probability of failure aims to provide the design engineer with a tool to critically evaluate the bench performance from a geotechnical risk perspective and to provide a basis for future bench design optimization.

关键词： Mine safety Rock slope stability Kinematic analysis Probability of failure Limit equilibrium analysis Case study

Droid-IoT:Detect Android IoT Malicious Applications Using ML and Blockchain

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Computers, Materials & Continua 2022年第1期70卷 739-766页

作者： hani Mohammed Alshahrani College of Computer Science and Information Systems Najran UniversityNajran61441Saudi Arabia

One of the most rapidly growing areas in the last few years is the Internet of Things(IoT),which has been used in widespread fields such as healthcare,smart homes,and *** is one of the most popular operating systems(OS)used by IoT devices for communication and data *** OS captured more than 70 percent of the market share in *** of the popularity of the Android OS,it has been targeted by cybercriminals who have introduced a number of issues,such as stealing private *** reported by one of the recent studies Androidmalware are developed almost every 10 ***,due to this huge exploitation an accurate and secure detection system is needed to secure the communication and data exchange in Android IoT *** paper introduces Droid-IoT,a collaborative framework to detect Android IoT malicious applications by using the blockchain ***-IoT consists of four main engines:(i)collaborative reporting engine,(ii)static analysis engine,(iii)detection engine,and(iv)blockchain *** engine contributes to the detection and minimization of the risk of malicious applications and the reporting of any malicious *** features are extracted automatically fromthe inspected applications to be classified by the machine learning model and store the results into the *** performance of Droid-IoT was evaluated by analyzing more than 6000 Android applications and comparing the detection rate of Droid-IoT with the state-of-the-art ***-IoT achieved a detection rate of 97.74%with a low false positive rate by using an extreme gradient boosting(XGBoost)classifier.

关键词： Android blockchain analysis malware

ON ALMOST PRIME SUBMODULES

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Acta Mathematica Scientia 2012年第2期32卷 645-651页

作者： hani A.Khashan Department of Mathematics Al al-Bayt UniversityMafraqJordan

In this article, we define almost prime submodules as a new generalization of prime and weakly prime submodules of unitary modules over a commutative ring with identity. We study some basic properties of almost prime submodules and give some characterizations of them, especially for （finitely generated faithful） multiplication modules.

关键词： Prime submodules weakly prime submodules almost prime submodules multiplication modules

Fabrication of Submicron-Diameter and Taper Fibers Using Chemical Etching

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Journal of Materials Science & Technology 2012年第4期28卷 308-312页

作者： hani J. Kbashi Department of Physics College of Science University of Baghdad Baghdad Al-Jadriya-10070 Iraq

The thin, long length and high smoothness silica photonic nanowires and taper optical fiber were fabricated using a simple and low cost chemical etching method. A two-steps wet etch process were used consisting of etching with 30% HF acid to remove cladding and 24% HF acid to decrease fiber core diameter. An approach for on-line monitoring of etching using 1300 nm light power transmitted in the optical fiber was used to determine the diameter of the remaining core and showed a transition between two different operation regimes of nanofiber from the embedded regime, where the mode was isolated from the environment, to the evanescent regime. The data indicated that the diameter of the silica fiber decreased linearly for both 30% and 24% HF acid with 1.2 and 0.1/zm/min grad diameter, respectively at room temperature, and more than 70% of the mode intensity could propagate outside fiber when the core diameter was less than 1μm. The results of fiber taper showed that the fiber was tapered by a factor of 20 while retaining a thin core structure and leaving about more than 85% of core structure.

关键词： Chemical etching Submicron fiber Taper fibers

Employing Computational Intelligence to Generate More Intelligent and Energy Efficient Living Spaces

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International Journal of Automation and computing 2008年第1期5卷 1-9页

作者： hani Hagras Department of Computing and Electronic Systems Centre for Computational IntelligenceUniversity of EssexWivenhoe ParkColchester CO4 3SQUK

Our living environments are being gradually occupied with an abundant number of digital objects that have networking and computing capabilities. After these devices are plugged into a network, they initially advertise their presence and capabilities in the form of services so that they can be discovered and, if desired, exploited by the user or other networked devices. With the increasing number of these devices attached to the network, the complexity to configure and control them increases, which may lead to major processing and communication overhead. Hence, the devices are no longer expected to just act as primitive stand-alone appliances that only provide the facilities and services to the user they are designed for, but also offer complex services that emerge from unique combinations of devices. This creates the necessity for these devices to be equipped with some sort of intelligence and self-awareness to enable them to be self-configuring and self-programming. However, with this ＂smart evolution＂, the cognitive load to configure and control such spaces becomes immense. One way to relieve this load is by employing artificial intelligence （AI） techniques to create an intelligent ＂presence＂ where the system will be able to recognize the users and autonomously program the environment to be energy efficient and responsive to the user＇s needs and behaviours. These AI mechanisms should be embedded in the user＇s environments and should operate in a non-intrusive manner. This paper will show how computational intelligence （CI）, which is an emerging domain of AI, could be employed and embedded in our living spaces to help such environments to be more energy efficient, intelligent, adaptive and convenient to the users.

关键词： Computational intelligence (CI) fuzzy systems neural networks (NNs) genetic algorithms (GAs) intelligent buildings,energy efficiency.

Strategic sill pillar design for reduced hanging wall overbreak in longhole mining

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International Journal of Mining Science and Technology 2021年第5期31卷 975-982页

作者： Tuo Chen hani S.Mitri Department of Mining and Materials Engineering Mc Gill UniversityMontrealQuebec H3A 0E8Canada

Steeply dipping,vein and tabular orebodies are traditionally extracted with longitudinal retreat mining methods such as Eureka and Avoca in a bottom-up sequence with delayed *** increase productivity,sill pillars in the orebody are used to separate mining zones thus allowing production to take place simultaneously in two or more *** such mining methods are productive,they may be accompanied with high volumes of hanging wall overbreak causing significant unplanned ore *** this work,it is shown through a mine design case study of a narrow vein deposit that a sill pillar could also play a significant role in limiting hanging wall *** demonstrate the role of sill pillar,a novel numerical modelling scheme is proposed to account for progressive stope wall overbreak.A numerical modelling approach of element death and rebirth is developed to allow for the detected stope overbreak to be immediately removed and replaced with backfill material before upper-level stope *** is further shown that the average overbreak volume could be reduced by as much as 33%when the sill pillar is strategically placed in the lower half of a mine plan.

关键词： Underground mine design Longitudinal mining Sill pillar design Unplanned ore dilution Numerical modelling

Application of rock mass classification systems to rock slope stability assessment:A case study

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Journal of Rock Mechanics and Geotechnical Engineering 2017年第6期9卷 993-1009页

作者： Hassan Basahel hani Mitri Department of Mining and Materials Engineering McGill UniversityMontrealH3A 0E8Canada

The stability of rock slopes is considered crucial to public safety in highways passing through rock cuts, as well as to personnel and equipment safety in open pit mines. Slope instability and failures occur due to many factors such as adverse slope geometries, geological discontinuities, weak or weathered slope materials as well as severe weather conditions. External loads like heavy precipitation and seismicity could play a significant role in slope failure. In this paper, several rock mass classification systems developed for rock slope stability assessment are evaluated against known rock slope conditions in a region of Saudi Arabia, where slopes located in rugged terrains with complex geometry serve as highway road cuts. Selected empirical methods have been applied to 22 rock cuts that are selected based on their failure mechanisms and slope materials. The stability conditions are identified, and the results of each rock slope classification system are compared. The paper also highlights the limitations of the empirical classification methods used in the study and proposes future research directions.

关键词： Rock mass classification Graphical slope mass rating Continuous slope mass rating Rock slope stability