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Deep Learning-based Environmental Sound Classification Using Feature Fusion and Data Enhancement

Computers, Materials & Continua 2023年第1期74卷 1069-1091页

作者： Rashid Jahangir muhammad Asif Nauman Roobaea Alroobaea Jasem Almotiri muhammad mohsin malik Sabah M.Alzahrani Department of Computer Science COMSATS University IslamabadVehari CampusPakistan Department of Computer Science University of Engineering and Technology LahorePakistan Department of Computer Science College of Computers and Information TechnologyTaif UniversityTaif21974Saudi Arabia

Environmental sound classification(ESC)involves the process of distinguishing an audio stream associated with numerous environmental *** common aspects such as the framework difference,overlapping of different sound events,and the presence of various sound sources during recording make the ESC task much more complicated and *** research is to propose a deep learning model to improve the recognition rate of environmental sounds and reduce the model training time under limited computation *** this research,the performance of transformer and convolutional neural networks(CNN)are *** audio features,chromagram,Mel-spectrogram,tonnetz,Mel-Frequency Cepstral Coefficients(MFCCs),delta MFCCs,delta-delta MFCCs and spectral contrast,are extracted fromtheUrbanSound8K,ESC-50,and ESC-10,***,this research also employed three data enhancement methods,namely,white noise,pitch tuning,and time stretch to reduce the risk of overfitting issue due to the limited audio *** evaluation of various experiments demonstrates that the best performance was achieved by the proposed transformer model using seven audio features on enhanced *** UrbanSound8K,ESC-50,and ESC-10,the highest attained accuracies are 0.98,0.94,and 0.97 *** experimental results reveal that the proposed technique can achieve the best performance for ESC problems.

关键词： Environmental sound classification convolutional neural network deep learning transformer data augmentation

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Development and Aging Behaviour of Solvent-Based Polychloroprene Rubber Nano-Adhesive Using Multiwall Carbon Nanotubes

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Journal of Materials Science and Chemical Engineering 2020年第9期8卷 31-44页

作者： muhammad Awais muhammad Shahid mohsin Saleem Fariz Aneeq muhammad Shoaib Butt malik Adeel Umer School of Chemical and Materials Engineering National University of Sciences & Technology Islamabad Pakistan

Polychloroprene (PC) based contact adhesives are widely used in various applications;however, there is a possibility to improve the properties of PC adhesive. Modifications of polymers can enhance the properties of the material, e.g. increase in thermal stability, compatibility, rigidity, physical response, flexibility and improve the polymer process ability. In the current study, improved formulation of solvent-based adhesive was developed, and the properties were further enhanced by the addition of nano-reinforcement of multiwall carbon nanotubes (MWCNTs). The addition of nano-reinforcement was optimized to obtain improvement in the bond strength and also to enhance its resistance at a high temperature (~100°C). This paper discusses the uniform dispersion of MWCNTs during the synthesis of polychloroprene solvent-based adhesive, thereby improving its structural properties. Incorporation of MWCNTs-solvent-based adhesives resulted in a 20% - 35% improvement in 180° peel strength determined on flexible substrates such as canvas, leather. The reinforced based adhesive also exhibited improved thermal stability and weather resistance compared with unreinforced adhesive. The MWCNTs- solvent-based contact adhesives is a potential candidate in an industrially relevant branch of adhesives commonly used in structural applications, e.g., footwear, plastic, leather, automobile, construction industries, etc.

关键词： Nanocomposite Polychloroprene Adhesive Peel Strength Carbon Nanotubes

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Evaluation of Pear Varieties for Physiochemical Traits Grown under Climatic Conditions of Soon Valley, Pakistan

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American Journal of Plant Sciences 2018年第11期9卷 2217-2226页

作者： malik mohsin Abbas Hira Fai muhammad Maaz Aziz Sahar Rashid Hameed Ullah Rashad Qadri muhammad Azam Horticultural Research Institute Faisalabad Pakistan Horticultural Research Station Murree Pakistan Institute of Horticultural Sciences University of Agriculture Faisalabad Faisalabad Pakistan

The study carried out aimed at characterizing the pear cultivars and to explore the specific cultivar most suitable to be commercially grown in Soon valley region. Nine pear varieties (Leconte, Bagugosha, Bartlet pear, Concord, Pear selection-1, Pear Red, Pear White, Kashmiri Nashpati and Kashmiri Nakh) were tested for their physiochemical quality attributes. The observations made during the study revealed that variety Bagugosha scored maximum (7.95, 8.10) in taste and flavor respectively. The same variety produced maximum fruit size (5081 mm2), fruit weight (205 g), soluble solid contents (15%) and total sugars (9.56%). However, fruit yield per plant was maximum (98.80 kg) in Bartlet pear variety and Bagugosha produced fruitweight of 60.20 kg. Titratable acidity was determined maximum (0.44%) in Kashmiri Nakh. Number of seeds were maximum (8.20) in Bartlet Pear as well as in Bgugosha. The exploration of this research study revealed that the Bagugosha is the prime quality cultivar to be suggested for commercial cultivation in Soon valley compared to all nine evaluated varieties.

关键词： Pear Physiological Traits Climate Soon Valley

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放電加工中復合電極幾何形狀對電極磨損形狀影響的實驗研究

放電加工中復合電極幾何形狀對電極磨損形狀影響的實驗研究

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作者： malik mohsin Ali 上海交通大学

学位级别：硕士

在生物医学、汽车、航空航天、半导体和电子器件领域,微系统都起到了重要作用。电火花加工(electric discharge machining,简称EDM)能够在任何导电材料上产生微观结构,而不用考虑它材料的特性。然而,工具电极的磨损却一直是阻碍着微细... 详细信息

在生物医学、汽车、航空航天、半导体和电子器件领域,微系统都起到了重要作用。电火花加工(electric discharge machining,简称EDM)能够在任何导电材料上产生微观结构,而不用考虑它材料的特性。然而,工具电极的磨损却一直是阻碍着微细电火花加工在实际工业领域应用的一大壁垒。为了改善电极的损耗,本研究提出了一种由芯部和包层组成的复合电极。采用田口法设计了锌铜复合电极的实验基体。为了探讨电参数对组合刀具形状的影响,选择了四种不同的峰值电流和脉冲宽度。同时,对铜镀层厚度、锌芯板厚度、芯板与镀层之间的间隙等非电参数选择了两种不同的水平。根据参数的数量和相应的级别使用L16的正交数组。每次试验重复三次,以消除数据的不确定性。因此,共进行了48次试验,并仔细记录了每次实验的响应数据。数据分析采用田口分析、方差分析等统计工具。结果表明,除脉宽外,其它电参数对复合电极的侧磨损均有显著影响。而磨损长度之间的差异并不取决于堆芯包层板之间的间隙。因此,在铜作为芯材和包层材料的情况下,对芯包层板间距、包层板厚度和包层板厚度进行了多层次的单因素实验。在单因素实验中,利用方差分析模型只研究了一个因素,并比较了不同水平的响应均值。结果表明,减小板间间隙可显著降低侧面磨损,但对磨损长度的差异无影响。降低覆层板的厚度可以降低侧磨,但其最佳值取决于芯材的厚度和材质。此外,使用铜锌复合电极时,侧面的磨损将进一步降低。因此,使用这种类型的组合电极,并且使得极板之间的间隙尽可能地缩小,那么电极的侧面磨损在微观水平上会得到显著降低,能极大地降低成本。

关键词：电火花加工电极损耗复合电极凹形刀具端头

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Optimizing Row Spacing to Ameliorate the Productivity of Spring Sugarcane (Saccharum officinarum L.)

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Agricultural Sciences 2016年第8期7卷 531-538页

作者： Sami Ullah Shakeel Ahmad Anjum muhammad mohsin Raza Aamir Riaz Adeel Abbas malik muhammad Yousif Jinchuan Ma Yingxia Liu Jiajia Zhang Dingwen Cheng Yaxin Xu Iftikhar Ali Department of Agronomy University of Agriculture Faisalabad Faisalabad Pakistan Ministry of Agricultural Key Laboratory of Crop Nutrition and Fertilization Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing China Arid Zone Research Institute Pakistan Agriculture Research Council Bahawalpur Pakistan Weed Science Laboratory Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing China College of Resource and Environment Jilin Agricultural University Changchun China

One of the main reasons behind reduced cane yield is pathetic method of planting. Planting method and row spacing are the most important yield contributing factors in sugarcane. A field experiment was carried out in order to determine quality and yield of sugarcane in various spatial arrangements. Treatments are 180 cm spaced trenches with triple row strips;180 cm spaced trenches with alternate row strips;120 cm spaced trenches with double row strips and 60 cm spaced furrow with single row. Perusal of data revealed that 3.6%, 13.4%, 15%, 15.3% more cane diameter (cm), cane length (cm), stripped cane yield (t·haˉ1), sugar yield (t·haˉ1) were obtained from 180 cm spaced trenches with triple row strips as compared to conventional planting method i.e. 60 cm spaced furrows. While the number of millable canes mˉ2, polarity %, cane juice purity %, cane juice %, commercial cane sugar % and cane sugar recovery % remained non-significant by different planting techniques.

关键词： Furrow Planting Quality Row Spacing Sugarcane Trench Planting Yield

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Proteomic analysis of exosomes isolated from saliva and salivary glands of tick Haemaphysalis longicornis

Proteomic analysis of exosomes isolated from saliva and sali...

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中国畜牧兽医学会兽医寄生虫学分会第一届青年科学家学术论坛

作者： mohsin Nawaz muhammad Irfan malik Houshuang Zhang Ibrahim A.Hassan Jie Cao Yongzhi Zhou Mudassar Hameed Zulfiqar Hussain Kuthu Jinlin Zhou key Laboratory of Animal Parasitology of Ministry of Agriculture Shanghai Veterinary Research InstituteChinese Academy of Agricultural Sciences

Background:Exosomes,the nano-sized membrane vesicles are considered as vehicles of cellular *** usually release exosomes in their exeretory-secretory products to modulate host ***,a little is known about the secretion of exosomes by *** this study,we showed for the very first time that the tick,Haemaphysalis longicornis,secretes micro vesicles,resembling to ***:Exosomes were purified from saliva and salivary glands of *** ticks,through serial steps of *** of exosomes was confirmed by electron *** chromatography(LC-MS/MS) was used to characterize the proteins within tick-derived *** addition,GO and KEGG database were mapped to analyse the molecular functions,biological processes,cellular components and pathways associated with salivary-exosomal ***:Electron microscopy analysis of saliva and culture medium containing salivary glands revealed the presence of exosomes like vesicles within a size range of 50-100 *** of exosomal markers(Hsp70 and elongation factor 1) as well as parasite specific proteins gave us further confirmation of their release by the ticks.A total of 354 proteins in salivary exosomes whereas 287 proteins in culture medium containing salivary glands were *** of the proteins within tick-derived exosomes have been identified as components of parasitic *** analysis(Gene Ontology) indicated association of certain biological and molecular functions with salivary exosomal proteins which may be helpful in development of ***,KEGG database revealed involvement of salivary exosomal proteins in proton transport,detoxification,ECM-receptor interaction,Ribosome,RNA transport,ABC transporters and oxidative ***:Results of this study provide evidence that exosomes are being secreted by the ticks and suggests that tick derived exosomes could play important roles in host pa

关键词： Haemaphysalis longicornis exosomes salivary glands proteomic analysis

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