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Multilevel Pattern Mining Architecture for Automatic Network Monitoring in Heterogeneous Wireless Communication Networks

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China Communications 2016年第7期13卷 108-116页

作者： Zhiguo Qu John Keeney Sebastian Robitzsch Faisal zaman Xiaojun Wang Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and TechnologyNanjing 210044China School of Electronic Engineering Dublin City UniversityDublinIreland Network Management Lab AthloneIreland

The rapid development of network technology and its evolution toward heterogeneous networks has increased the demand to support automatic monitoring and the management of heterogeneous wireless communication *** paper presents a multilevel pattern mining architecture to support automatic network management by discovering interesting patterns from telecom network monitoring *** architecture leverages and combines existing frequent itemset discovery over data streams,association rule deduction,frequent sequential pattern mining,and frequent temporal pattern mining techniques while also making use of distributed processing platforms to achieve high-volume throughput.

关键词： automatic network monitoring sequential pattern mining episode discovery module

The off-site implications of deforestation on sedimentation rates and pollution in Abkenar open water (Anzali Lagoon, Caspian Sea) using radionuclide techniques and sediment quality indices

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International Journal of Sediment Research 2022年第3期37卷 370-382页

作者： Mohammadreza Gharibreza Mohammad zaman Mahmood Arabkhedri Shahriar Sobh-Zahedi Soil Conservation and Watershed Management Research Institute Agricultural Research Education and Extension Organization (AREEO) Soil and Water Management & Crop Nutrition Section Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture International Atomic Energy AgencyVienna International Centre Guilan Agricultural and Natural Resources Research and Education Center AREEO

Abkenar open water(AOW) has a 35 km~2 distribution and is the largest part of the Anzali Lagoon in the southern coastal zone of the Caspian Sea. The effects of deforestation in the upstream basin of the AOW were assessed by measuring the rate of sedimentation, sediment contamination, and ecological risk for aquatic life and end-users using radioisotopes Cesium-137 and Lead-210. The chronology of the AOW sediment column was studied using the Constant Rate of Supply model. Correlations between environmental changes and the sedimentary regime of the study area highlight the contribution of the AOW authorized international and local wood harvesting companies pre-and-post 1950 in the catchment in terms of the rate of sediment supply and the influx of toxic metals. Historical evidence shows that two specific layers formed during World Wars I and II with the mean rates of 0.185 ± 0.04(±STD) and 0.32 ± 0.02 kg/(m·y), respectively. The highest influx of alkali elements and toxic metals(nickel, cadmium, lead, zinc, and copper) into the basin occurred in 1945. Two layers of gray mud(16-50 cm) and organic-rich dark loss mud(0-16 cm) correlated well with the programmed wood harvesting *** layers accumulated from 1953 to 2000 with a mean rate of 0.6 ± 0.2 and 2 ± 0.7 kg/(m~2·y). Thus,aquatic life and end-users have been exposed to moderate to extremely high levels of toxic metals and a moderate level of contamination since the 1950 s.

关键词： Abkenar open water Accumulation rate Anzali Lagoon Sediment contamination CRS model Radioisotopes

弯曲疲劳后4D-C/C复合材料的抗弯强度及热膨胀性能(英文)

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新型炭材料 2014年第3期29卷 169-175页

作者： Wajed zaman 李克智李伟 Hira zaman Khurshid Ali 西北工业大学材料学院陕西西安710072 Institute of Chemical Sciences University of Peshawar

采用液相浸渍炭化技术,在压力为75MPa下制备出4D-C/C复合材料,并进行高温热处理。研究静态和动态加载条件下,材料沿厚度方向的弯曲性能及断裂行为。结果表明,循环次数达到10×105次、频率为10 Hz时,材料的临界弯曲疲劳极限是静态弯曲强... 详细信息

采用液相浸渍炭化技术,在压力为75MPa下制备出4D-C/C复合材料,并进行高温热处理。研究静态和动态加载条件下,材料沿厚度方向的弯曲性能及断裂行为。结果表明,循环次数达到10×105次、频率为10 Hz时,材料的临界弯曲疲劳极限是静态弯曲强度的80%。静态弯曲加载情况下,C/C复合材料失效机制取决于试样底层炭纤维的取向。循环疲劳载荷作用下,其失效机制包括基体开裂、纤维-基体界面弱化及纤维断裂。复合材料在循环加载过程中界面结合强度降低,并释放内应力,故增强了纤维拔出以及复合材料的假塑性,疲劳加载后其剩余弯曲强度增加10%左右,而模量降低。疲劳载荷引起材料基体缺陷和裂纹数量的增加及纤维断裂,削弱了长度方向上的热膨胀,使材料热膨胀系数降低。

关键词： C C复合材料疲劳抗弯强度微观结构热膨胀

Capacitive sensor probe to assess frying oil degradation

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Information Processing in Agriculture 2015年第2期2卷 142-148页

作者： Alfadhl Yahya Khaled Samsuzana Abd Aziz Fakhrul zaman Rokhani Department of Biological and Agricultural Engineering Faculty of EngineeringUniversiti Putra MalaysiaSerdangSelangorDarul Ehsan 43400Malaysia Department of Computer and Communication Systems Engineering Faculty of EngineeringUniversiti Putra MalaysiaSerdangSelangorDarul Ehsan 43400Malaysia

The repeated usage of frying oil has been proven hazardous due to the degradation process by chemical reactions that lead to changes in the quality of the ***,the degree of frying oil degradation is indicated by the percentage of its total polar compounds(TPC).In this study,a capacitive sensor was designed to assess frying oil degradation at several heating time intervals by measuring changes on its electrical *** sensor was designed using interdigitated electrode structure.A total of 30 samples of 130 ml palm oil were heated at 180℃ up to 30 *** each one hour interval,one sample was moved out from the laboratory *** electrical capacitance,total polar compound(TPC)and viscosity of the samples were measured for *** results demonstrated significant correlation between oil electrical capacitance with TPC and viscosity with R^2 ranged from 0.83 to *** designed sensor has good potential for simple and inexpensive way of determining frying oil quality.

关键词： Capacitance sensor Frying oil quality Heating

The Kemeny’s Constant and Spanning Trees of Hexagonal Ring Network

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Computers, Materials & Continua 2022年第12期73卷 6347-6365页

作者： Shahid zaman Ali N.A.Koam Ali Al Khabyah Ali Ahmad Department of Mathematics University of SialkotSialkot51310Pakistan Department of Mathematics College of ScienceJazan UniversityNew CampusSaudi Arabia College of Computer Sciences and Information Technology Jazan UniversityJazanSaudi Arabia

Spanning tree(τ)has an enormous application in computer science and chemistry to determine the geometric and dynamics analysis of compact *** the field of medicines,it is helpful to recognize the epidemiology of hepatitis C virus(HCV)*** the other hand,Kemeny’s constant(Ω)is a beneficial quantifier characterizing the universal average activities of a Markov *** network invariant infers the expressions of the expected number of time-steps required to trace a randomly selected terminus state since a fixed beginning state *** and Loizou determined that the Kemeny’s constant can also be obtained through *** by Levene and Loizou,we deduced the Kemeny’s constant and the number of spanning trees of hexagonal ring network by their normalized Laplacian eigenvalues and the coefficients of the characteristic *** on the achieved results,entirely results are obtained for the M鯾ius hexagonal ring network.

关键词： Matrix Analysis hexagonal ring network Kemeny’s constant Spanning tree

Acute and chronic toxicity of nickel to nitrifiers at different temperatures

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Journal of Environmental Sciences 2019年第8期31卷 169-178页

作者： Xiaoguang Liu Mohammad M.I.Chowdhury Masuduz zaman Mingu Kim George Nakhla Department of Civil and Environmental Engineering University of Western Ontario Department of Chemical and Biochemical Engineering University of Western Ontario

This study investigated the acute nickel toxicity on nitrification of low ammonia synthetic wastewater at 10, 23, and 35°C. The nickel inhibition half-velocity constants(K_(I,Ni)) for ammonia oxidizing bacteria(AOB) and nitrite oxidizing bacteria(NOB) based on Ni/MLSS ratio at 10, 23, and 35°C were 5.4 and 5.6 mg Ni/g MLSS, 4.6 and 3.5 mg Ni/g MLSS, and 9.1 and 2.7 mg Ni/g MLSS, respectively. In addition, chronic toxicity of nickel to nitrification of low ammonia synthetic wastewater was investigated at 10°C in two sequencing batch reactors(SBRs). Long-term SBRs operation and short-term batch tests were comparable with respect to the extent of inhibition and corresponding Ni/MLSS ratio. The μ_(max), b, and K_o of AOB were 0.16 day^(-1), 0.098 day^(-1) and 2.08 mg O_2/L after long-term acclimatization to nickel of 1 mg/L at 10°C, high dissolved oxygen(DO)(7 mg/L) and long solids retention time(SRT) of 63–70 days. Acute nickel toxicity of nitrifying bacteria was completely reversible.

关键词： Nickel inhibition Temperature Nitrifying culture Activated sludge Toxicity

Secure and efficient implementation of facial emotion detection for smart patient monitoring system

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Quantitative Biology 2023年第2期11卷 175-182页

作者： Kh Shahriya zaman Md Mamun Bin Ibne Reaz Department of Electrical Electronic and Systems EngineeringUniversiti Kebangsaan Malaysia(UKM)Bangi 43600Malaysia

Background:Machine learning has enabled the automatic detection of facial expressions,which is particularly beneficial in smart monitoring and understanding the mental state of medical and psychological *** algorithms that attain high emotion classification accuracy require extensive computational resources,which either require bulky and inefficient devices or require the sensor data to be processed on cloud ***,there is always the risk of privacy invasion,data misuse,and data manipulation when the raw images are transferred to cloud servers for processing facical emotion recognition(FER)*** possible solution to this problem is to minimize the movement of such ***:In this research,we propose an efficient implementation of a convolutional neural network(CNN)based algorithm for on-device FER on a low-power field programmable gate array(FPGA)*** is done by encoding the CNN weights to approximated signed digits,which reduces the number of partial sums to be computed for multiply-accumulate(MAC)*** is advantageous for portable devices that lack full-fledged ***:We applied our approximation method on MobileNet-v2 and ResNet18 models,which were pretrained with the FER2013 *** implementations and simulations reduce the FPGA resource requirement by at least 22%compared to models with integer weight,with negligible loss in classification ***:The outcome of this research will help in the development of secure and low-power systems for FER and other biomedical *** approximation methods used in this research can also be extended to other imagebasedbiomedicalresearchfields.

关键词： facial expression detection emotion recognition FPGA implementation convolutional neural network signed digit approximation

Determinants of Bangladesh Export Performance:A Gravity Model of Trade Approach

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Determinants of Bangladesh Export Performance:A Gravity Mode...

作者： Md Fahamid zaman 南京理工大学

学位级别：硕士

Bangladesh is a developing ***,and economic growth are very potential weapons in the economy of *** purpose of this research is to study the impact of export on economic growth in *** the past two decades the Bangladesh economy has gone through huge *** aim of this study is to find out if the most common gravity variables have a similar effect on Bangladesh exports as they do for most of the advanced *** is another purpose of this thesis is to utilize the Gravity Model of Trade in order to get an understanding of the reasons behind Bangladesh export *** Bangladesh population has on average been increasing during the period,the exports have grown *** study is mainly based on secondary sources of data which was collected from various books,journals,research works,and publications and mostly from the economics and trading *** this study an attempt has been made to review the recent available literatures related to export,import and economic growth in *** paper will also suggest some strategy to overcome the export barriers for Bangladesh export sector.

关键词： Bangladesh Export GDP Gravity model Economic growth

Blood flow of an Oldroyd-B fluid in a blood vessel incorporating a Brownian stress

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Science China(Physics,Mechanics & Astronomy) 2012年第1期55卷 125-131页

作者： zaman Gul ISLAM S. KANG Yong Han JUNG Il Hyo Department of Mathematics University of Malakand Chakdara Dir（Lower） Khyber Puhtoonkhwa Pakistan Department of Mathematics COMSATS IIT H-8/1 lslamabad Pakistan Department of Mathematics Pusan National University Busan 609-735 South Korea

The mechanical behavior of non-Newtonian fluids can be modeled by several constitutive differential equations. The Oldroyd model is viewed as one of the successful models for describing the response of a subclass of polymeric liquids, in particular the non-Newtonian behavior exhibited by these fluids. In this paper, we are concerned with the study of the unsteady flows of an incom-pressible viscoelastic fluid of an Oldroyd-B type in a blood vessel acting on a Brownian force. First we derive the orientation stress tensor considering Hookean dumbbells on Brownian configuration fields. Then we reformulate the three-dimensional Oldroyd-B model with the total stress tensor which consists of the isotropic pressure stress tensor, the shear stress tensor, and the orientation stress tensor. Finally we present the numerical simulations of the model and analyze the effect of the orientation stress tensor in the vessel.

关键词： fluid flow total and orientation stress tensor Hemodynamics mathematical models