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A Double-Branch Xception Architecture for Acute Hemorrhage Detection and Subtype Classification

Computers, Materials & Continua 2023年第9期76卷 3727-3744页

作者： Muhammad Naeem Akram Muhammad Usman Yaseen Muhammad Waqar Muhammad Imran aftab hussain Department of Computer Science COMSATS University IslamabadIslamabad45550Pakistan Department of Software Engineering Capital University of Science&TechnologyIslamabad44000Pakistan

This study presents a deep learning model for efficient intracranial hemorrhage(ICH)detection and subtype classification on non-contrast head computed tomography(CT)images.ICH refers to bleeding in the skull,leading to the most critical life-threatening health condition requiring rapid and accurate diagnosis.It is classified as intra-axial hemorrhage(intraventricular,intraparenchymal)and extra-axial hemorrhage(subdural,epidural,subarachnoid)based on the bleeding location inside the skull.Many computer-aided diagnoses(CAD)-based schemes have been proposed for ICH detection and classification at both slice and scan levels.However,these approaches performonly binary classification and suffer from a large number of parameters,which increase storage costs.Further,the accuracy of brain hemorrhage detection in existing models is significantly low for medically critical applications.To overcome these problems,a fast and efficient system for the automatic detection of ICH is needed.We designed a double-branch model based on xception architecture that extracts spatial and instant features,concatenates them,and creates the 3D spatial context(common feature vectors)fed to a decision tree classifier for final predictions.The data employed for the experimentation was gathered during the 2019 Radiologist Society of North America(RSNA)brain hemorrhage detection challenge.Our model outperformed benchmark models and achieved better accuracy in intraventricular(99.49%),subarachnoid(99.49%),intraparenchymal(99.10%),and subdural(98.09%)categories,thereby justifying the performance of the proposed double-branch xception architecture for ICH detection and classification.

关键词： Computed tomography convolutional neural networks intracranial hemorrhage xception architecture

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Properties of Certain Subclasses of Analytic Functions Involving q-Poisson Distribution

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Computer Modeling in Engineering & Sciences 2022年第6期131卷 1465-1477页

作者： Bilal Khan Zhi-Guo Liu Nazar Khan aftab hussain Nasir Khan Muhammad Tahir School of Mathematical Sciences and Shanghai Key Laboratory of PMMP East China Normal UniversityShanghai200241China Department of Mathematics Abbottabad University of Science and TechnologyAbbottabad22010Pakistan Department of Mathematics King Abdulaziz UniversityJeddah21589Saudi Arabia Department of Mathematics FATA UniversityAkhorwal(Darra Adam Khel)FR Kohat26000Pakistan

By using the basic(or q)-Calculus many subclasses of analytic and univalent functions have been generalized and studied from different viewpoints and perspectives.In this paper,we aim to define certain new subclasses of an analytic function.We then give necessary and sufficient conditions for each of the defined function classes.We also study necessary and sufficient conditions for a function whose coefficients are probabilities of q-Poisson distribution.To validate our results,some known consequences are also given in the form of Remarks and Corollaries.

关键词： Analytic function q-difference operator sufficient condition q-Poisson distribution

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On ev and ve-Degree Based Topological Indices of Silicon Carbides

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Computer Modeling in Engineering & Sciences 2022年第2期130卷 871-885页

作者： Jung Rye Lee aftab hussain Asfand Fahad Ali Raza Muhammad Imran Qureshi Abid Mahboob Choonkil Park Department of Data Science Daejin UniversityKyunggi11159Korea Department of Mathematics King Abdulaziz UniversityJeddah21589Saudi Arabia Department of Mathematics COMSATS University IslamabadVehari61110Pakistan Department of Mathematics Division of Science&TechnologyUniversity of EducationLahorePakistan Research Institute for Natural Sciences Hanyang UniversitySeoul04763Korea

In quantitative structure-property relationship(QSPR)and quantitative structure-activity relationship(QSAR)studies,computation of topological indices is a vital tool to predict biochemical and physio-chemical properties of chemical structures.Numerous topological indices have been inaugurated to describe different topological features.The ev and ve-degree are recently introduced novelties,having stronger prediction ability.In this article,we derive formulae of the ev-degree and ve-degree based topological indices for chemical structure of Si_(2)C_(3)−I[a,b].

关键词： Topological indices silicon carbide ev-degree ve-degree

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A novel symmetric 10 Gbit/s architecture with a single feeder fiber for WDM-PON based on chirp-managed laser

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Optoelectronics Letters 2012年第6期8卷 468-472页

作者： aftab hussain 忻向军 Abdul Latif Ashiq hussain 余重秀 Abid Munir Yousaf Khan Muhammad Idrees Afridi State Key Laboratory of Information Photonics and Optical Communications Ministry of EducationBeijing Univer-sity of Posts and Telecommunications Processing and Communication Systems Research Group Heavy Industries Taxila Education City University

We propose the single feeder fiber architecture for wavelength division multiplexing passive optical network(WDM-PON)based on directly modulated chirp managed laser(CML).The downlink(DL)signal output from the laser is converted to return-to-zero(RZ)differential phase shift signal using a pulse carver.The downstream signal is reused as a carrier for the upstream using intensity modulation technique.Simulation results show the error-free performance at symmetric data rate of 10 Gbit/s per channel with negligible power penalty and improved receiver sensitivity for the uplink(UL),over 25 km standard single-mode fiber(SSMF).A low-cost and reduced circuitry network design is implemented on a single feeder fiber with the elimination of differential encoder and one external modulator.

关键词：标准单模光纤 WDM-PON 激光输出对称管理啁啾馈线架构

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Numerical analysis of intermodal delay in few-mode fibers for mode division multiplexing in optical fiber communication systems

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Optoelectronics Letters 2012年第2期8卷 138-141页

作者： Abid Munir 忻向军刘博 Abdul Latif aftab hussain Shahab Ahmad Niazi School of Electronic Engineering Beijing University of Posts and Telecommunications State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing Key Laboratory of Work Safety Intelligent Monitoring Beijing University of Posts and Telecommunications

In order to achieve higher spectral efficiency, mode division multiplexing (MDM) in few-mode fibers is a new research area. The idea faces lots of technical issues including intermodal delay and mode coupling which limit the achievable length of the system. This paper is designated to complete the analysis of intermodal delay in step-index few-mode fibers. We analyze numerically all the parameters of fiber, which could impact intermodal delay in few-mode fibers and identify the conditions which can increase the number of multiplex modes without significant increase in maximum intermodal delay.

关键词：光纤通信系统多式联运光纤延迟波分复用数模数值分析频谱效率模式耦合

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A novel duplex WDM-PON with DPSK modulated downstream and re-modulation of the downlink signal for OOK upstream

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Optoelectronics Letters 2012年第2期8卷 134-137页

作者： aftab hussain 余重秀忻向军原全新刘博 Ashiq hussain Abdul Latif Abid Munir Yousaf Khan Idress Afridi Key Laboratory of Information Photonics and Optical Communications Ministry of EducationBeijing University of Posts and Telecommunication

We experimentally demonstrate and analyze a 10 Gbit/s full duplex wavelength division multiplexing passive optical network (WDM-PON) system. A non-return-to-zero differential phase shift keying (NRZ-DPSK) modulation technique is first utilized for downlink direction, and then the downlink signal is re-modulated for the uplink direction using intensity modulation technique of on-off keying (OOK) with a data rate of 10 Gbit/s per channel. An effective colorless WDM-PON full duplex transmission system is achieved for the data rate of 10 Gbit/s per channel with a channel spacing of 60 GHz over the distance of 25 km with low power penalty.

关键词： WDM-PON DPSK调制调制技术下行信号 OOK 数据传输速率上游无线

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Political Turbulence Converged with Covid-19-Algeria’s Structural Development Dilemma

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Asian Journal of Middle Eastern and Islamic Studies 2020年第3期14卷 383-395页

作者： Meng Shu aftab hussain Middle East Studies Institute Shanghai International Studies UniversityShanghaiChina Department of World History East China Normal UniversityShanghaiChina

Algeria is currently at a crossroads in its transformation,and the outbreak of the coronavirus pandemic has had a great impact on this country.The Algerian government responded relatively quickly to the pandemic,adopting strict prevention and control measures to contain the virus from spreading,economic measures to maintain stability,and preventive measures for post-pandemic problems.It firmly supported China in the pandemic and in return received a lot of assistance.Algeria has been facing political turbulence since early 2019.With the pandemic and turbulence intertwined,there are advantages and disadvantages for the Algerian government.On the one hand,the isolation caused by the pandemic suspended the protest movement and gave the Algerian government greater powers,including strengthening control of the country and strengthening surveillance.On the other hand,the pandemic has impacted Algeria’s economy and foreign trade,and highlighted social inequality.Although the leaders and government of Algeria have already been changed,its deep-rooted structural problems,which are both political and economic in nature,have not been resolved,the economic structure remains unbalanced,and the subsidy policy is still difficult to adjust.

关键词： Algeria Covid-19 Arab Spring 2.0 development dilemma

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Transformation of the Palestine Liberation Organization:Goals and Means

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Asian Journal of Middle Eastern and Islamic Studies 2018年第3期12卷 342-353,I0005页

作者： Meng Shu aftab hussain Middle East Studies Institute Shanghai International Studies UniversityChina Department of World History East China Normal UniversityChina

As an important part of the Palestine-Israel peace negotiations,the ideology of the PLO has gradually transformed in the past decades,mainly reflected in recent years in the change of the goals and means of its struggle with Israel.The goals of the Palestinian Liberation Organization(PLO)have become more gradual,pragmatic and complicated;armed struggle against Israel is no longer the sole mean for the PLO to lead the liberation movement;instead,moderate means have become the new norm.The transformation of the PLO is still in progress.The holistic picture shows that the PLO is more positive about peace talks with Israel and towards the development of Palestine itself.However,due to the difficulties standing in the way,the future of the transformation still faces many uncertainties.

关键词： Palestine liberation organization transformation Palestine-Israeli conflict

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Disintegration of uncertainties associated with real-time multi-satellite precipitation products in diverse topographic and climatic area in Pakistan

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Journal of Mountain Science 2021年第3期18卷 716-734页

作者： Muhammad MASOOD Ghulam NABI Muhammad BABUR aftab hussain AZHAR Muhammad KALEEM ULLAH Centre of Excellence in Water Resources Engineering University of Engineering&Technology GT-RoadLahore 54890Pakistan Civil Engineering Department University of Central PunjabLahore 54782Pakistan Directorate of Hydrology Pakistan Water&Power Development Authority(WAPDA)MDO-WAPDAMangla Dam10200Pakistan Civil Engineering Department University of LahoreLahore 54000Pakistan

Satellite-based Precipitation Estimates(SPEs)have gained importance due to enhanced spatial and temporal resolution,particularly in Indus basin,where raingauge network has fewer observation stations and drainage area is laying in many countries.Formulation of SPEs is based on indirect mechanism,therefore,assessment and correction of associated uncertainties is required.In the present study,disintegration of uncertainties associated with four prominent real time SPEs,IMERG,TMPA,CMORPH and PERSIANN has been conducted at grid level,regional scale,and summarized in terms of regions as well as whole study area basis.The bias has been disintegrated into hit,missed,false biases,and Root Mean Square Error(RMSE)into systematic and random errors.A comparison among gauge-and satellite-based precipitation estimates at annual scale,showed promising result,encouraging use of real time SPEs in the study area.On grid basis,at daily scale,from box plots,the median values of total bias(-0.5 to 0.5 mm)of the used SPEs were also encouraging although some under/over estimations were noted in terms of hit bias(-0.15 to 0.05 mm/day).Relatively higher values of missed(0.3 to 0.5 mm/day)and false(0.5 to 0.7 mm/day)biases were observed.The detected average daily RMSE,systematic errors,and random errors were also comparatively higher.Regional-scale spatial distribution of uncertainties revealed lower values of uncertainties in plain areas,depicting the better performance of satellite-based products in these areas.However,in areas of high altitude(>4000 m),due to complex topography and climatic conditions(orographic precipitation and glaciated peaks)higher values of biases and errors were observed.Topographic barriers and point scale gauge data could also be a cause of poor performance of SPEs in these areas,where precipitation is more on ridges and less in valleys where gauge stations are usually located.Precipitation system’s size and intensity can also be a reason of higher biases,because Microwave Imager underestimate precipitation in s

关键词： Satellite precipitation Real-time Error characterization IMERG Indus Basin

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An AWG based colorless WDM-PON with RZ-DPSK modulated downstream and re-modulation of DL signal for OOK upstream

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Frontiers of Optoelectronics 2012年第3期5卷 298-305页

作者： Abdul LATIF Xiangjun XIN aftab hussain Liu BO Yousaf KHAN Ashiq hussain Abid MUNIR State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing 100876 China

We proposed an arrayed waveguide granting （AWG） based 10 Gbps full duplex wavelength division multiplexing passive optical network （WDM-PON） utiliz- ing a return-to-zero differential phase shift keying （RZ- DPSK） modulation technique for down-link direction and then re-modulation of the downlink （DL） signal for the uplink （UL） direction using intensity modulation technique （OOK） with a data rate of 10 Gbps per channel. A successful cost effective colorless WDM-PON full duplex transmission operation for a data rate of 10Gbps per channel, with a channel spacing of 60 GHz over a distance of 25 km without any optical amplification and dispersion compensation is achieved within low power penalty.

关键词： wavelength division multiplexing passiveoptical network （WDM-PON） arrayed waveguide grating（AWG） centralized light source differential phase shiftkeying （DPSK） re-modulation

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