Proposed program for monitoring recent Crustal movement in Korean Peninsula

Hamdy, Ahmed M.,Jo, Bong-Gon Korean Society of Earth and Exploration Geophysici 2002 지구물리 Vol.5 No.4

한반도는 동아시아 활성 경계부의 끝에 위치해있다. 한반도에서의 지진 활동은 이웃나라인 중국과 일본에 비해서 상대적으로 낮은 편이다. 한반도에서의 지진정보에 따르면 한반도는 지진재해로부터 완전히 안전하지는 않다. 게다가, 한반도 주위의 "태평양, 필리핀해, 유라시아, 남중국"같은 구조적 판들의 상대적인 움직임의 결과로 생긴 다양한 구조적 힘에 의해 둘러 싸여져 있다. 현재 남한에는 5개의 정부기관에서 서로의 필요에 따라 설치한 65개의 GPS관측소를 가지고 있다. 한반도에서의 지진피해를 최소화하기 위해 현재, 앞서 언급한 지진관측소 중 몇 개의 관측소로부터의 GPS관측 자료와 한반도 내부와 주변부의 구조적 환경들을 함께 고려하여 근대의 지각운동을 관찰하는 프로그램이 계획되어 왔다. 이 프로그램은 두개의 주요 부분으로 이루어져 있으며, 첫째부분은 주변 국가인 "중국, 일본"과 협력하여 한반도 주위의 지각 변형을 모니터링하기 위한 것인데, 이 부분은 "East Sea Phase and Yellow Sea Phase" 두개의 페이스로 구성되어 있다 이러한 페이스들은 "East Sea Phase and Yellow Sea Phase"에서 각각의 변형 파라미터들을 결정하는데 도움을 줄 것이다. 한편, 이 프로그램의 두번째 부분은 한반도 주요 단층 내부와 주변의 변형 파라미터와 한반도-제주도 간의 상대운동을 결정하기 위해 계획되었다. 이번 연구를 통해서 다양한 지구 역학적 방법의 적용을 위한 신빙성 있는 자료로서 사용되기 위해, 앞서 언급한 관측소에서의 지각운동 중심부에서 기록된 자료의 필요성이 부각되었다. The Korean peninsula is located at the edge of the East Asian active margin. The seismic activity in the Korean Peninsula is relatively low compared with the neighboring countries China and Japan. According to the available Seismic information, the Korean Peninsula is not totally safe from the Earthquake disaster. Moreover, the area is surrounded by varies tectonic forces which is resulted from the relative movements of the surrounding tectonic plates "Pacific, Philippine Sea, Eurasian and South China". Nowadays South Korea has 65 GPS stations belong to 5 governmental organizations "each organization figure out its own GPS stations for different requirements" In order to minimize the seismic hazard in the Korean Peninsula a program for monitoring the recent crustal movement has been designed considering the uses of the available GPS station "some selected stations from the previously mentioned stations" and the tectonic settings in and around the Korean Peninsula. This program is composed of two main parts, the first part to monitor the crustal deformation around the Korean Peninsula with the collaboration of the surrounding countries "China and Japan" this part is composed of two phases "East Sea Phase and Yellow Sea Phase". These phases will be helpful in determining the deformation parameters in the East Sea and the Yellow Sea respectively While the Second part of this program, is designed to determine the deformation parameters id and around the main faults in the Korean Peninsula and the relative movement between the Korean Peninsula and the Cheju Island. Through out this study the needs of crustal movement center rose up to collect the data from the previously mentioned stations and Organizations in order to use such reliable data in different geodynamical application.

Capacity Magnification by Imposing Composite Action of Precast Concrete Flanged Girders

Hamdy M. Afefy,Nesreen M. Kassem,Salah El-Din F. Taher 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.7

This paper presents an experimental study in order to verify the efficiency of different connecting techniques in improving thehorizontal shear resistance of composite concrete flanged beams. The studied composite beams consisted of precast concrete websinterconnected with precast concrete flanges. Different connecting techniques had been considered; namely, plain/reinforced Ultra-High-Performance Strain-Hardening Cementitious Composites (UHP-SHCC) shear pockets, UHP-SHCC shear buckets in the flangeaccommodated extended steel dowels from the web, unbonded internal steel fasteners and intermediate shear intrusions. Eightcomposite flanged beams incorporating different connecting techniques along with three reference beams; monolithic, successivelycast flanged beam and unconnected web/flange beams were prepared and tested up to failure under two cycles of non-reversalrepeated loading. Furthermore, the push-off test method was employed in order to determine the horizontal shear resistance of theused connecting techniques. Each technique came up with advantages and disadvantages. Therefore, it is a matter of compromise todecide the most appropriate technique according to the necessary criteria (ultimate capacity or ductility). Finally, the horizontal shearresistances were calculated based on the experimental findings and compared with the stipulated resistances in the ECP 203-2007and the ACI 318-14 design codes. It was found that the design codes’ values showed conservative results.

Design of Cloud Based Indoor Autonomous navigation with TurtleBot3

Hamdi A. Ahmed,Jong-Wook Jang 한국정보통신학회 2018 2016 INTERNATIONAL CONFERENCE Vol.10 No.1

The Internet of things (IoT) concept is evolving rapidly and influencing new development in various application areas, that allow massive numbers of uniquely addressable things to enables interconnectedness among devices. In Simultaneous localization and mapping (SLAM), the robot acquire its map of environment while simultaneously localizing itself relative to the map. During autonomous navigation robot equipped with suit of sensors and technology that enabled to autonomous navigation, obstacle detection and avoidance. In this paper, present novel approach that, during autonomous navigation, if we want to avoid something not be avoidable for example things like our doors. ROS (Robot Operating System) enabled ground mobile robot like TurtleBot3, using Cloud IoT approach to communicate with obstacle thigs on the path like locked door and then will open for it and traverse the doorway to continue to the destination. In this research, the door are left open dooring map generation.

Effects of surfactant type and cholesterol level on niosomes physical properties and in vivo ocular performance using timolol maleate as a model drug

Hamdy Abdelkader,Usama Farghaly,Hossam Moharram 한국약제학회 2014 Journal of Pharmaceutical Investigation Vol.44 No.5

This study aimed at investigating the roles ofboth Span surfactant type (having a gel/liquid transitiontemperature range from\10 to 55 C), and cholesterol levelon in vitro characteristics and in vivo performance oftimolol maleate niosomes. Span 20, Span 40 and Span 60niosomes were prepared using the thin film hydrationmethod. Span:cholesterol levels employed were 7:3 mol/mol(a minimum concentration for stable niosomes) and1:1 mol/mol (a maximum concentration accommodated byniosomes). Niosomes were characterized for size, percentageentrapment efficiency, morphology, in vitro release andintra-ocular pressure (IOP) lowering activity in rabbits. Theorder of the area under IOP-time curve (AUC) was rankedas follows: Span 40[Span 20[Span 60. The AUC andIOPmax values for Span 40:cholesterol (7:3) niosomes weresuperior due to having a good compromise between thermoresponsivenessand efficient capacity for loading a significantdrug cargo, compared with Span 20 and Span 60.

Multistage Point and Confidence Interval Estimation of the Shape Parameter of Pareto Distribution

Hamdy, H.I.,Son, M.S.,Gharraph, M.K.,Rashad, A.M. The Korean Statistical Society 2003 Communications for statistical applications and me Vol.10 No.3

This article presents the asymptotic theory of triple sampling procedure as pertain to estimating the shape parameter of Pareto distribution. Both point and confidence interval estimation are considered within the same inference unified framework. We show that this group sampling technique possesses the efficiency of Anscome (1953), Chow and Robbins (1965) purely sequential procedure as well as reduce the number of sampling operations by utilizing Stein (1945) two stages procedure. The analysis reveals that the technique performs excellent as far as the accuracy is concerned. The present problem differs from those considered by many authors, in multistage sampling, in that the final stage sample size and the parameter's estimate become highly correlated and therefore we adopted different approach.

Stability Analysis and Memory Control Design of Polynomial Fuzzy Systems with Time Delay via Polynomial Lyapunov-Krasovskii Functional

Hamdi Gassara,Ahmed El Hajjaji,Mohamed Krid,Mohamed Chaabane 제어·로봇·시스템학회 2018 International Journal of Control, Automation, and Vol.16 No.4

This paper investigates the problems of delay-dependent stability analysis and memory control design of polynomial fuzzy systems with time delay. Using polynomial Lyapunov-Krasovskii functional and slack polynomial matrix variables, delay dependent sufficient stability and stabilizability conditions are derived in terms of sum of squares (SOS) which can be numerically (partially symbolically) solved via the recently developed SOSTOOLS. The main advantage of the proposed design is the reduction of conservatism for three great reasons. The first one is that polynomial matrices are not only dependent on the system state vector but also on the state vector with time delay. The second one is that the design conditions are formulated in delay dependent SOS. It is well known that the delay-dependent conditions are less conservative than those independent of time delay. The third one is that only correlated terms are used in the design of SOS. The simulation and comparison are given to illustrate the lesser conservativeness of the proposed result.

Reconstruction of an Amputated Glans Penis With a Buccal Mucosal Graft: Case Report of a Novel Technique

Hamdy Aboutaleb 대한비뇨의학회 2014 Investigative and Clinical Urology Vol.55 No.12

Penile amputation is a rare catastrophe and a serious complication of circumcision. Reconstruction of the glans penis may be indicated following amputation. Our reportdiscusses a novel technique for reconfiguration of an amputated glans penis 1 year aftera complicated circumcision. A 2-year-old male infant presented to us with glans penisamputation that had occurred during circumcision 1 year previously. The parents complainedof severe meatal stenosis with disfigurement of the penis. Penis length was 3cm. Complete penile degloving was performed. The distal part of the remaining peniswas prepared by removing fibrous tissue. A buccal mucosal graft was applied to thedistal part of the penis associated with meatotomy. The use of a buccal mucosal graftis a successful and simple procedure with acceptable cosmetic and functional resultsfor late reconfiguration of the glans penis after amputation when penile size is suitable.

Anuria in a 9-Month-Old Infant Resulting from Ureteral Cystine Stones

Hamdy Aboutaleb 대한비뇨의학회 2011 Investigative and Clinical Urology Vol.52 No.9

Pediatric urolithiasis and calcular anuria in early infancy are rare. Cystine stones may develop in utero or during early infancy. We report the case of a female 9-month-old infant with obstructive anuria resulting from cystine stones in a single functioning unit. She presented to the emergency department owing to the absence of micturition for 3 days. Radiological investigations revealed four left ureteral stones and an atrophic right kidney resulting from a calcular obstruction. Her laboratory values were as follows: serum creatinine 6.7 mg/dl, Na 132 mEq/l, K 6 mg/dl, and hematocrit 32%. An urgent percutaneous nephrostomy tube was inserted into the left side for urinary drainage, and her serum levels of creatinine and K returned to normal within 3 days. A left ureterolithotomy was the final management. Stone analysis revealed pure cystine crystals.

Effect of smear layer deproteinization on bonding of self-etch adhesives to dentin: a systematic review and meta-analysis

Hamdi H. H. Hamama 대한치과보존학회 2018 Restorative Dentistry & Endodontics Vol.43 No.2

Objectives The aim of this systematic review was to critically analyze previously published studies of the effects of dentin surface pretreatment with deproteinizing agents on the bonding of self-etch (SE) adhesives to dentin. Additionally, a meta-analysis was conducted to quantify the effects of the above-mentioned surface pretreatment methods on the bonding of SE adhesives to dentin. Materials and Methods An electronic search was performed using the following databases: Scopus, PubMed and ScienceDirect. The online search was performed using the following keywords: ‘dentin’ or ‘hypochlorous acid’ or ‘sodium hypochlorite’ and ‘self-etch adhesive.’ The following categories were excluded during the assessment process: non-English articles, randomized clinical trials, case reports, animal studies, and review articles. The reviewed studies were subjected to meta-analysis to quantify the effect of the application time and concentration of sodium hypochlorite (NaOCl) and hypochlorous acid (HOCl) deproteinizing agents on bonding to dentin. Results Only 9 laboratory studies fit the inclusion criteria of this systematic review. The results of the meta-analysis revealed that the pooled average microtensile bond strength values to dentin pre-treated with deproteinizing agents (15.71 MPa) was significantly lower than those of the non-treated control group (20.94 MPa). Conclusions In light of the currently available scientific evidence, dentin surface pretreatment with deproteinizing agents does not enhance the bonding of SE adhesives to dentin. The HOCl deproteinizing agent exhibited minimal adverse effects on bonding to dentin in comparison with NaOCl solutions.

GRADED PRIMITIVE AND INC-EXTENSIONS

Hamdi, Haleh,Sahandi, Parviz Korean Mathematical Society 2018 대한수학회논문집 Vol.33 No.2

It is well-known that quasi-$Pr{\ddot{u}}fer$ domains are characterized as those domains D, such that every extension of D inside its quotient field is a primitive extension and that primitive extensions are characterized in terms of INC-extensions. Let $R={\bigoplus}_{{\alpha}{{\in}}{\Gamma}}$ $R_{\alpha}$ be a graded integral domain graded by an arbitrary torsionless grading monoid ${\Gamma}$ and ${\star}$ be a semistar operation on R. The main purpose of this paper is to give new characterizations of gr-${\star}$-quasi-$Pr{\ddot{u}}fer$ domains in terms of graded primitive and INC-extensions. Applications include new characterizations of UMt-domains.