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A Progressive Approach to Generic Object Detection: A Two-Stage Framework for Image Recognition

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Computers, Materials & Continua 2023年第6期75卷 6351-6373页

作者： Muhammad Aamir Ziaur Rahman Waheed ahmed Abro Uzair Aslam Bhatti zaheer ahmed Dayo Muhammad Ishfaq College of Computer Science Huanggang Normal UniversityHuanggangHubei438000China FAST School of Computing National University of Computer&Emerging Science(NUCES)Karachi CampusKarachi75030Pakistan School of Information and Communication Engineering Hainan UniversityHaikou68000China

Object detection in images has been identified as a critical area of research in computer vision image *** has developed several novel methods for determining an object’s location and category from an ***,there is still room for improvement in terms of detection *** study aims to develop a technique for detecting objects in *** enhance overall detection performance,we considered object detection a two-fold problem,including localization and *** proposed method generates class-independent,high-quality,and precise proposals using an agglomerative clustering *** then combine these proposals with the relevant input image to train our network on convolutional ***,a network refinement module decreases the quantity of generated proposals to produce fewer high-quality candidate ***,revised candidate proposals are sent into the network’s detection process to determine the object *** algorithm’s performance is evaluated using publicly available the PASCAL Visual Object Classes Challenge 2007(VOC2007),VOC2012,and Microsoft Common Objects in Context(MS-COCO)*** only 100 proposals per image at intersection over union((IoU)=0.5 and 0.7),the proposed method attains Detection Recall(DR)rates of(93.17%and 79.35%)and(69.4%and 58.35%),and Mean Average Best Overlap(MABO)values of(79.25%and 62.65%),for the VOC2007 and MS-COCO datasets,***,it achieves a Mean Average Precision(mAP)of(84.7%and 81.5%)on both VOC *** experiment findings reveal that our method exceeds previous approaches in terms of overall detection performance,proving its effectiveness.

关键词： Deep neural network deep learning features agglomerative clustering localizations refinement region of interest(ROI) object detection

A Dual-Tree Complex Wavelet Transform-Based Model for Low-Illumination Image Enhancement

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Wuhan University Journal of Natural Sciences 2021年第5期26卷 405-414页

作者： GUAN Yurong Muhammad Aamir Ziaur Rahman zaheer ahmed Dayo Waheed ahmed Abro Muhammad Ishfaq HU Zhihua Department of Computer Science Huanggang Normal UniversityHuanggang 438000HubeiChina

Image enhancement is a monumental task in the field of computer vision and image *** methods are insufficient for preserving naturalness and minimizing noise in *** article discusses a technique that is based on wavelets for optimizing images taken in ***,the V channel is created by mapping an image’s RGB channel to the HSV color ***,the acquired V channel is decomposed using the dual-tree complex wavelet transform(DT-CWT)in order to recover the concentrated information within its high and low-frequency ***,an adaptive illumination boost technique is used to enhance the visibility of a low-frequency ***,anisotropic diffusion is used to mitigate the high-frequency component’s noise *** improve the results,the image is reconstructed using an inverse DT-CWT and then converted to RGB space using the newly calculated ***,images are white-balanced to remove color *** demonstrate that the proposed approach significantly improves outcomes and outperforms previously reported methods in general.

关键词： image enhancement dual-tree complex wavelet transform(DT-CWT) anisotropic diffusion low-light images

Low-complexity signal detection for massive MIMO systems via trace iterative method

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Journal of Systems Engineering and Electronics 2024年第3期35卷 549-557页

作者： IMRAN A.Khoso ZHANG Xiaofei ABDUL Hayee Shaikh IHSAN A.Khoso zaheer ahmed Dayo College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106China School of Electrical Engineering Korea UniversitySeoul 02841Korea School of Mathematics South China University of TechnologyGuangzhou 510641China Department of Computer Science Huanggang Normal UniversityHuanggang 438000China

Linear minimum mean square error(MMSE)detection has been shown to achieve near-optimal performance for massive multiple-input multiple-output(MIMO)systems but inevitably involves complicated matrix inversion,which entails high *** avoid the exact matrix inversion,a considerable number of implicit and explicit approximate matrix inversion based detection methods is *** combining the advantages of both the explicit and the implicit matrix inversion,this paper introduces a new low-complexity signal detection ***,the relationship between implicit and explicit techniques is ***,an enhanced Newton iteration method is introduced to realize an approximate MMSE detection for massive MIMO uplink *** proposed improved Newton iteration significantly reduces the complexity of conventional Newton ***,its complexity is still high for higher ***,it is applied only for first two *** subsequent iterations,we propose a novel trace iterative method(TIM)based low-complexity algorithm,which has significantly lower complexity than higher Newton *** guarantees of the proposed detector are also *** simulations verify that the proposed detector exhibits significant performance enhancement over recently reported iterative detectors and achieves close-to-MMSE performance while retaining the low-complexity advantage for systems with hundreds of antennas.

关键词： signal detection low-complexity linear minimum mean square error(MMSE) massive multiple-input multiple-output(MIMO) trace iterative method(TIM)

蚕豆蛋白的提取及NaCl浓度和pH值对其溶解性和乳化性的影响(英文)

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农业工程学报 2010年第1期26卷 380-384页

作者：王艳萍李双喜 zaheer ahmed 宋庆明天津科技大学食品工程与生物技术学院食品营养与安全教育部重点实验室天津300457

蚕豆蛋白富含微量元素和人体必需的8种氨基酸,具有较高的开发价值。采用超声提取和水提取的方法提取蚕豆蛋白,研究了NaCl浓度和pH对蚕豆蛋白提取率、沉淀、功能性的影响。在pH值为8～12,超声提取和水提取均有较高的提取率。蚕豆蛋白的... 详细信息

蚕豆蛋白富含微量元素和人体必需的8种氨基酸,具有较高的开发价值。采用超声提取和水提取的方法提取蚕豆蛋白,研究了NaCl浓度和pH对蚕豆蛋白提取率、沉淀、功能性的影响。在pH值为8～12,超声提取和水提取均有较高的提取率。蚕豆蛋白的等电点在pH4.0～4.2之间。在pH4溶解性和乳化性最低,pH值在4～12时溶解性和乳化性随pH值的升高而升高,pH值为12时溶解性和乳化性最高。NaCl浓度从0到1.0mol/L,溶解性和乳化性升高;当NaCl浓度继续增加,在pH4、pH7溶解性和乳化性随之下降。在相同的NaCl浓度和pH值时,超声提取比水提取蛋白的溶解性和乳化性高。该研究为蚕豆蛋白的提取工艺的确定及其在食品中的应用提供依据。

关键词：蛋白提取溶解性乳化蚕豆

Evaluation of cotton germplasm for morphological and biochemical host plant UPdates resistance traits against sucking insect pests complex

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Journal of Cotton Research 2021年第3期4卷 211-218页

作者： RIZWAN Muhammad ABRO Saifullah ASIF Muhammad Usman HAMEED Amjad MAH BOOB Wajid DEHO zaheer ahmed SIAL Mahboob Ali Nuclear Institute of Agriculture(NIA) TandojamSindh 70060Pakistan Nuclear Institute for Agriculture and Biology(NIAB) Faisalabad 38000Pakistan College of Plant Science and Technology Huazhong Agricultural UniversityWuhan 430070China

Background:Sucking insect pests cause severe damage to cotton crop *** development of insect resistant cotton cultivars is one of the most effective measures in curtailing the yield *** the role of morphological and biochemical host plant resista nee(HPR)traits in plant defense,12 cotton genotypes/varieties were evaluated for leaf area,leaf glanding,total soluble sugars,total soluble proteins,total phenolics,tannin and total flavonoids against fluctuating populations of whitefly,thrips and jassid under field ***:The population of these insects fluctuated during the growing seas on and remained above threshold level(whitefly>5,thrips>(8-10)f or jassid>1 per leaf)during late June and early *** and negative association of whitefly(r=-0.825)and jassid(r=-0.929)with seed cotton yield was *** population of insects were the highest in Glandless-1 followed by NIA-82 and ***-Kiran followed by NI AB-878 and Sadori were the most resistant,with the mean population of 1.41,1.60,1.66(whitefly);2.24,232,2.53(thrips)and 037,0.31,036(jassid),*** resistant variety NIAB-Kiran showed less soluble sugars(8.54 mg.g^(-1)),soluble proteins(27.11 mg.g^(-1))and more phenolic(36.56 mg.g^(-1))and flavonoids(13.10mg.g^(-1))as compared with the susceptible check ***,all insect populations were positively correlated with total soluble sugars and *** populations exhibited negative response to leaf gossypol glands,total phenolics,tannins and *** thrips and jassid populations had a significant and negative correlation with these four biochemical HPR ***:The ide ntified resistant resources and HPR traits can be deployed against sucking in sect pests'complex in future breeding programs of developing insect resistant cotton varieties.

关键词： Gossypium Insect resistance Plant defense Plant breeding Resistant traits Sucking in sects

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一株马乳酒样乳杆菌胞外多糖的理化性质

食品与发酵工业 2011年第9期37卷 59-63页

作者：王艳萍李超 zaheer ahmed 天津科技大学食品工程与生物技术学院

ZW3胞外多糖是由分离自西藏开菲尔粒中的马乳酒样乳杆菌马乳酒亚种ZW3分泌产生,文中针对此多糖进行了理化特性的分析与表征。实验中,傅立叶变换红外光谱表明此多糖存在羧基、羟基和酰胺基,与典型的异型多糖结构相一致。气相色谱分析表... 详细信息

ZW3胞外多糖是由分离自西藏开菲尔粒中的马乳酒样乳杆菌马乳酒亚种ZW3分泌产生,文中针对此多糖进行了理化特性的分析与表征。实验中,傅立叶变换红外光谱表明此多糖存在羧基、羟基和酰胺基,与典型的异型多糖结构相一致。气相色谱分析表明此多糖仅由半乳糖和葡萄糖构成。ZW3胞外多糖絮凝能力与黄原胶相似,比瓜尔胶的絮凝能力要强。相对于商业用途亲水胶体黄原胶、瓜尔胶和刺槐胶来说,ZW3胞外多糖具有更强的乳化能力,因此它具有作为商业用乳化剂的潜力。以上特性表明ZW3胞外多糖在工业应用方面特别是食品工业上拥有广阔的前景。

关键词：马乳酒样乳杆菌ZW3 胞外多糖理化特性

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产胞外多糖乳球菌的优化培养

中国乳品工业 2008年第7期36卷 25-28页

作者：王艳萍冯武 zaheer ahmed 天津科技大学食品工程与生物技术学院天津300457

以苯酚硫酸法测定乳酸乳球菌乳酸亚种WH-C1在不同培养基中的胞外多糖合成量,试验以WHEY作为基础培养基,比较了添加不同碳源、氮源对EPS合成的影响,并采用正交实验L9(34)对碳源、氮源的添加量及培养基初始pH进行了优化,确定最佳组合为:... 详细信息

以苯酚硫酸法测定乳酸乳球菌乳酸亚种WH-C1在不同培养基中的胞外多糖合成量,试验以WHEY作为基础培养基,比较了添加不同碳源、氮源对EPS合成的影响,并采用正交实验L9(34)对碳源、氮源的添加量及培养基初始pH进行了优化,确定最佳组合为:葡萄糖添加量15 g/L,胰蛋白胨添加量5 g/L,培养基初始pH值为6.5。研究了不同培养温度和接种量条件下该菌株的EPS合成曲线,结果表明温度对发酵液中EPS总积累量的影响较大,通过本研究确定了乳酸乳球菌乳酸亚种WH-C1最佳培养条件为:培养温度25℃,接种量为2%(体积分数),培养时间32 h,EPS合成量为325.8 mg/L。

关键词：胞外多糖优化培养基培养条件

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一株产黏特性的乳酸菌及其应用研究

中国食品添加剂 2009年第1期20卷 91-95,81页

作者：王艳萍李超张玢 zaheer ahmed 天津科技大学食品工程与生物技术学院天津300457

利用苯酚硫酸法从分离自西藏Kefir粒的11株乳酸菌中筛选得到了一株胞外多糖(EPS)产量较高的乳酸菌KF5,经生理生化实验及分子遗传学鉴定该菌株为植物乳杆菌(Lactobacillus plantarum)。生物学特性表明KF5具有较好的耐酸性以及一定的胆盐... 详细信息

利用苯酚硫酸法从分离自西藏Kefir粒的11株乳酸菌中筛选得到了一株胞外多糖(EPS)产量较高的乳酸菌KF5,经生理生化实验及分子遗传学鉴定该菌株为植物乳杆菌(Lactobacillus plantarum)。生物学特性表明KF5具有较好的耐酸性以及一定的胆盐耐受力,该菌株具有较强的产胞外多糖的能力。将添加有KF5的发酵乳与传统发酵乳相比较,其发酵乳的特性(产酸量、乳清析出率、黏度)良好,可作为取代植物或动物增稠剂使用。

关键词： EPS 筛选鉴定特性

Dependence of Structural and Optoelectrical Properties on the Composition of Electron Beam Evaporated Zn_xCd_(1-x)S Thin Films

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Journal of Materials Science & Technology 1996年第6期12卷 413-416页

作者： Shahzad Naseemt and M.Amin Mughal (To whom correspondence should be addressed)(Centre for Solid State Physics, University of the Punjab, Lahore-54590, Pakistan)M.Y.zaheer, N.ahmed and M.Akram (Dept. of Physics, University of the Punjab, Lahore-54590, Pak PUNJAB UNIV DEPT PHYSLAHORE 54590PAKISTAN

Thin films of ZnxCd1-xS have been prepared by electron beam evaporation of a mixture of ZnS & CdS powders. The films are deposited onto sodalime glass slides under similar *** composition of the films is varied from CdS to ZnS (x=0 to 1). The films show a regular change in color from toner red to orange yellow as Zn concentration increases to *** films are characterized for their optical, electricaI and structural properties. The bandgap value of ZnxCd1-xS films is found to vary linearIy from 2.20 eV to 3.44 eV with change in the x value from 0 to 1. The resistivity of these films is in the range of 171.0 Ωcm to 5.5× 106Ωcm for x=0~0.6. All the samples show cubic structure after annealing in air at 250℃ for 40 *** lattice constant ao varies from 0.5884 nm to 0.54109 nm linearly.

关键词： Thin Dependence of Structural and Optoelectrical Properties on the Composition of Electron Beam Evaporated Zn_xCd x)S Thin Films Zn