检索结果-南通市图书馆

International Journal of Communications, Network and System Sciences 2012年第9期5卷 624-630页

作者： Waqas Haider Muhammad Sharif Malik Mudassar Raza Abdul Wahab Izhar Ahmed Khan Umar Zia Jawad Tanveer hadia bashir Department of Computer Science COMSATS Institute of Information Technology Wah Cantt and Vehari Campus Pakistan

Edge enhancement is derived from lack of accurate result from edge detection techniques. The image which is captured from long distances carries a lot of noise and blur which causes edge discontinuity. Although some novel algorithms which are based on cellular neural network, fuzzy enhancement and binary morphology have shown accuracy in order to obtain refined edge but still the problem of edge discontinuity arises. Eliminating discontinuity of edge a hybrid technique is proposed based on pixel neighbors pattern analysis PNPA. In the technique Canny operator for initial edge detection, PNPA operation for edge enhancement are performed for remote sensing satellite image successively. The visual and subjective evaluation shows that the proposed PNPA operation can effectively eliminate the influence of edge discontinuity which occurred due to noise and blurr in original captured image, as comparing to existing edge segmenting processes.

关键词： Edge Detection Edge Enhancement

Recursive harmonic analysis for computing Hansen coefficients

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2010年第12期10卷 1298-1306页

作者： Mohamed Adel Sharaf hadia Hassan Selim Astronomy Department Faculty of Science King Abdul Aziz University Astronomy Department National Research Institute of Astronomy and Geophysics

We report on a simple pure numerical method developed for computing Hansen coefficients by using a recursive harmonic analysis technique. The precision criteria of the computations are very satisfactory and provide materials for computing Hansen＇s and Hansen＇s like expansions, and also to check the accuracy of some existing algorithms.

关键词： celestial mechanics -- methods: numerical

Plasma concentrations of chlorinated persistent organic pollutants and their predictors in the general population of Algiers, Algeria

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Emerging Contaminants 2021年第1期7卷 35-42页

作者： El hadia Mansouri Mohamed Reggabi Toxicology Laboratory Medicine FacultySpecialized Ali Ait Idir HospitalAlgiers16000Algeria

Background:Persistent organic pollutants(POPs)are subject of particular attention and in-depth studies which demonstrate their toxicity towards humans and biotope in *** are therefore addressed by the Stockholm Convention globally with human milk or blood as matrix for effectiveness ***:The objective of this study was to assess plasma concentrations of certain chlorinated POPs in subjects from the urban population in ***:A total number of 207 adult subjects were recruited in Algiers and plasma concentrations of Hexachlorobenzene(HCB),p,p’Dichlorodiphenyl DichloroEthylene(4,40 DDE)and Polychlorinated Biphenyls(PCBs)were determined by gas chromatography with mass spectrometry detection(GC-MS).Results:The nanogram per gram of lipids(ng g^(-1) lipids)geometric means of plasma concentrations of studied compounds were:6.09 for HCB,131.60 for 4,40 DDE,8.61 for PCB153,7.95 for PCB138 and 8.39 for *** 180,PCB 153 and PCB 138 showed a high correlation with each other(r>0.5).4,40 DDE concentrations were significantly higher in women and in subject with low educational level,whereas POPs were higher in older participants(>65 years old).Organochlorine pesticides(OCPs)and PCB153 concentrations were higher in overweight and obese *** was no significant difference between POPs concentrations according to breastfeeding history,smoking status or fish ***:Chlorinated POPs were detected in the blood plasma of adults living in *** concentrations were consistent with those of several studies in the ***,further investigations are needed to assess the exposure profile of subjects living near contaminated sites.

关键词： Organochlorine pesticides Polychlorinated biphenyls POPs Human biomonitoring Stockholm convention

QSM-IDM -A novel quadrature spatial modulation based on interleaving division multiplexing for multiple antenna system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Digital Communications and Networks 2019年第3期5卷 183-188页

作者： Sherif K. El Dyasti Esam A.A. Hagras hadia El-Hennawy Ain Shams Cairo Egypt Elec and Comm. Dept Technical Research Centre Cairo Egypt Faculty of Engineering Ain Shams Cairo Egypt

Quadrature Spatial Modulation (QSM) is a high spectral efficiency Multiple-Input Multiple Output (MIMO) technique used to improve the spectral efficiency of wireless communication systems. The main concept of QSM is to extend the spatial constellation of the conventional Spatial Modulation (SM) in both the in-phase and quadrature components of the data symbol. In this paper, because QSM-based on Interleaxdng Division Multiplexing (IDM) has not been introduced in the literature as a multiple antenna system, we introduced a novel scheme, called QSM system based on Interleaving Division Multiplexing (QSM-IDM). The antenna sets are also applied to a spreader, before being used to assign an antenna number for information transmission. Analysis and simulations for a flat fading channel show that the proposed QSM-IDM method significantly outperforms the original QSM system with the same data rate, while maintaining a relatively acceptable complexity. The obtained simulation results show that the conducted analysis yields significant improvements for the accuracy of the proposed scheme, with satisfactory complexity.

关键词： Interleaver Division Multiplexing (IDM) Multiple Input Multiple Output (MIMO) Spatial Modulation (SM) Quadrature Spatial Modulation (QSM)

HIDA scan for functional gallbladder disorder： ensure that you know how the scan was done

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2017年第2期16卷 197-201页

作者： Naeem Goussous hadia Maqsood Ethan Spiegler Gopal C Kowdley Steven C Cunningham Department of Surgery Saint Agnes Hospital Baltimore USA Department of Nuclear Medicine Saint Agnes Hospital Baltimore USA

BACKGROUND： Despite the increasing use of fatty meal（FM） as a substitute for cholecystokinin（CCK） in pain reproduction during hepato-imino-diacetic acid（HIDA） scan in functional gallbladder disorder, there are no studies comparing the differences between CCK and FM. The present study was to compare the efficacy of FM in comparison of CCK in FGBD application. METHODS： Patients undergoing HIDA scans from August 2013 to May 2014 were divided into two groups： those undergoing CCK-stimulated HIDA scan versus FM-stimulated HIDA scan. These groups were compared according to demographics and HIDA ***： Of 153 patients, 70 received CCK and 83 FM. There was no difference regarding age, gender, gallstones, gallbladder ejection fraction and time to visualization. However, significantly more of the patients receiving CCK than FM experienced pain reproduction（61% vs 30%, P〈0.01）.CONCLUSIONS： Stimulation of gallbladder contractility with a FM during HIDA is less than half as likely to reproduce biliary symptoms compared to CCK, despite similar ejection fractions and other parameters. It is essential that providers account for this difference when counseling patients regarding cholecystectomy for functional gallbladder disorder.

关键词： gallbladder dysfunction biliary dyskinesia cholecystokinin hepato-imino-diacetic acid

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Finite Operators

Journal of Mathematics and System Science 2013年第4期3卷 190-194页

作者： hadia Messaoudene Faculty of Economics Sciences and Management University of Tebessa Tebessa 12000 Algeria.

Let H be a separable infinite dimensional complex Hilbert space, and L（H） the algebra of all bounded linear operators on 3-t＇. The class of finite operators is the class of operators for which the distance of the identity operator I and the derivation range is maximal; where the derivation range of the operator A is defined by δA;δA ： L（H） -L（H） X- AX - XA. In this paper we present some properties of finite operators and give some classes of operators which are in the class of finite operators, and find for witch condition A ~ W is a finite operator in L（2-H H）, and gave a g6neralisation of Stampflli theorem.

关键词： Finite operator identity class R1 reduced approximate point spectrum.

Analytical Third Order Solution for Coupling Effects of Earth Oblateness and Direct Solar Radiation Pressure on the Motion of Artificial Satellites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Astronomy and Astrophysics 2014年第3期4卷 530-543页

作者： hadia Hassan Selim Department of Astronomy National Research Institute of Astronomy and Geophysics Cairo Egypt

Coupling effects of Earth oblateness and direct solar radiation pressure on the motion of an artificial satellite are evaluated. Secular and periodic terms are retained up to order three and two respectively, where the coefficient of the second zonal harmonic of the geopotential is considered of first order. The solution revealed the existence of secular terms at order three that arises from the couplings between terms, of lower orders, resulting from the solar radiation pressure.

关键词： Earth Oblateness-Solar Radiation Pressure-Artificial Satellites

Clues to predict incidental gallbladder cancer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2018年第2期17卷 149-154页

作者： Naeem Goussous hadia Maqsood Kalpesh Patel Hamid Ferdosi Naseem Muhammad Anne M.Sill Gopal C.Kowdley Steven C.Cunningham Department of Surgery Saint Agnes Hospital

Background: Consequences of incidental gallbladder cancer(iGBC) following cholecystectomy may include repeat operation(depending on T stage) and worse survival(if bile spillage occurred), both avoidable if iGBC were suspected ***: A retrospective single-institution review was done. Ultrasound images for cases and controls were blindly reviewed by a radiologist. Chi-square and Student’s t tests, as well as logistic regression and Kaplan–Meier analyses were used. A P ≤ 0.01 was considered ***: Among 5796 cholecystectomies performed 2000–2013, 26(0.45%) were iGBC cases. These patients were older(75.61 versus 52.27 years), had more laparoscopic-to-open conversions(23.1% versus3.9%), underwent more imaging tests, had larger common bile duct diameter(7.13 versus 5.04 mm) and higher alkaline phosphatase. Ultrasound imaging showed that gallbladder wall thickening(GBWT) without pericholecystic fluid(PCCF), but not focal-versus-diffuse GBWT, was associated significantly with iGBC(73.9% versus 47.4%). On multivariable logistic regression analysis, GBWT without PCCF, and age were the strongest predictors of iGBC. The consequences iGBC depended significantly on intraoperative bile spillage, with nearly all such patients developing carcinomatosis and significantly worse ***: Besides age, GBWT, dilated common bile duct, and elevated alkaline phosphatase, number of preoperative imaging modalities and the presence of GBWT without PCCF are useful predictors of *** spillage causes poor survival in patients with iGBC.

关键词： Gallbladder cancer Incidental findings Cholecystectomy Bile spillage Carcinomatosis

Aggression and Conduct Disorder in Young Children. A Case Report

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Biosciences and Medicines 2018年第2期6卷 57-61页

作者： hadia Crider Kunal Malhotra Garima Singh University of Missouri Hospital and Clinics Columbia USA

Childhood Onset Conduct Disorder [CD] is a condition characterized by at least one symptom of conduct disorder (based on Diagnostic and Statistical Manual of Mental Disorders criteria—Fifth Edition) prior to 10 years of age. Children affected exhibit disruptive behaviors, usually negative, hostile, and defiant behavior similar to Oppositional Defiant Disorder [ODD]. As the child gets older they begin to display more characteristic of Conduct Disorder (lying, fighting, and stealing, vindictive behavior). These children are also likely to have comorbidities including Attention Deficit Hyperactivity Disorder (ADHD), learning disabilities, poor academic achievement, and substance abuse. Distinguishing early between symptoms of Conduct Disorder versus other differential diagnoses is essential in effective treatment. Early intervention with these children leads to a better prognosis and likelihood of functioning in society. This case illustrates the difficulty of diagnosing a young child with Childhood Onset Conduct Disorder.

关键词： CD Conduct Disorder Aggression Young Children

An Intrinsic Relation Between A Function of The RightAscension and Declination With the Angular Distanceto The Vertex for Hyades Stars

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Astronomy and Astrophysics 2011年第2期1卷 105-108页

作者： Mohamed Adel Sharaf hadia Hassan Selim 不详

In this paper, an intrinsic relation was developed for Hyades stars between a function of the right ascensions α and declination δ with the angular distance λ from the vertex. The precision criteria of this relation are very satisfactory and a correlation coefficient of value ≈ 1 was found which proves that the attributes are completely related linearly.

关键词： Ttechniques Astrometry and kinematic Moving clusters Open clusters-Hyades cluster