检索结果-南通市图书馆

Automatic Speaker Recognition Using Mel-Frequency Cepstral Coefficients Through Machine Learning

Computers, Materials & Continua 2022年第6期71卷 5511-5521页

作者： U˘gur Ayvaz Hüseyin Gürüler faheem Khan Naveed ahmed Taegkeun Whangbo Abdusalomov Akmalbek Bobomirzaevich Department of Computer Engineering Istanbul Technical UniversityIstanbul34485Turkey Department of Information Systems Engineering Mugla Sitki Kocman UniversityMugla48000Turkey Artificial Intelligence Lab Department of Computer EngineeringGachon UniversitySeongnam13557Korea Department of Computer Science College of Computing and InformaticsUniversity of SharjahSharjah27272UAE

Automatic speaker recognition(ASR)systems are the field of Human-machine interaction and scientists have been using feature extraction and feature matching methods to analyze and synthesize these *** of the most commonly used methods for feature extraction is Mel Frequency Cepstral Coefficients(MFCCs).Recent researches show that MFCCs are successful in processing the voice signal with high *** represents a sequence of voice signal-specific *** experimental analysis is proposed to distinguish Turkish speakers by extracting the MFCCs from the speech *** the human perception of sound is not linear,after the filterbank step in theMFCC method,we converted the obtained log filterbanks into decibel(dB)features-based spectrograms without applying the Discrete Cosine Transform(DCT).A new dataset was created with converted spectrogram into a 2-D *** learning algorithms were implementedwith a 10-fold cross-validationmethod to detect the *** highest accuracy of 90.2%was achieved using Multi-layer Perceptron(MLP)with tanh activation *** most important output of this study is the inclusion of human voice as a new feature set.

关键词： Automatic speaker recognition human voice recognition spatial pattern recognition MFCCs spectrogram machine learning artificial intelligence

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Vegetation-environment relationship in conifer dominating forests of the mountainous range of Indus Kohistan in northern Pakistan

引用

Journal of Mountain Science 2020年第8期17卷 1989-2000页

作者： Adam KHAN Moinuddin ahmed Muhammad faheem SIDDIQI Mohib SHAH Eduardo Soares CALIXTO Afsheen KHAN Paras SHAH Javed IQBAL Muhammad AZEEM Department of Botany University of BunerSwari 19290Pakistan Dr.Moinuddin ahmed Research Laboratory of Dendrochronology and Plant Ecology Department of Botany FederalUrdu University of ArtsScience and Technology Gulshan-e-Iqbal campus KarachiKarachi 75300Pakistan Department of Botany University of Karachi Karachi 75270Pakistan Department of Botany Abdul Wali Khan University MardanMardan 23200Pakistan Department of Entomology University of Sao PauloRibeirao PretoRibeirao Preto 14040-900Brazil Dr.Abdul Ghaffar laboratory of Plant Pathology and Aerobiology Department of BotanyFederal Urdu University ofArtsScience and Technology Gulshan-e-Iqbal campus KarachiKarachi 75300Pakistan

Environmental variables play a crucial role in shaping vegetation structure,mainly in mountainous *** studies have attempted to identify the environment-vegetation relationship of Conifer Dominating Forests(CDF)***,due to differences in local climate and soil composition,different environmental drivers can be *** applying multivariate analysis techniques,this study investigated the vegetation-environment relationship of CDF of Indus Kohistan in northern *** results showed that CDF of Indus Kohistan are distributed in five distinct ecological groups,which are dominated by different trees and understory species.A total of 7 trees and 71 understory species were recorded from the sampling *** deodara was the leading species among four groups,having the highest importance value(IV),density and basal *** I was dominated by Pinus wallichiana with the second highest importance value,density and basal *** addition,elevation,slope,maximum water holding capacity(MWHC),soil moisture(SM),total organic matter(TOM),sodium,phosphorus and nickel showed highly significant influence on composition and distribution pattern of Indus Kohistan ***,this study shows a new evidence of vegetation-environment relationship,pointing out specific drivers of vegetation structure in CDF of Indus Kohistan region in northern Pakistan.

关键词： Conifer forests Understory species Environmental variables Multivariate analysis Indus Kohistan Northern Pakistan

来源：

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

Dominant ferromagnetic coupling over antiferromagnetic in Ni doped ZnO： First-principles calculations

引用

Frontiers of physics 2016年第1期11卷 121-127页

作者： Bakhtiar UI Haq Rashid ahmed Galila Abdellatif Amiruddin Shaari faheem K. Butt Mohammed Benali Kanoun Souraya Goumri-Said Department of Physics Faculty of Science UniversitiTeknologi Malaysia UTM Skudai Johor81310 Malaysia Department of Physics Sungkyunkwan University Suwon 44 0-746 Korea Physik-Department ECS Technische Universitat Miinchen James-Franck-Straβe 1 85748 Garching Germany Department of Physics The University of Lahore 1-KM Defence Road Lahore Pakistan Department of Physics Faculty of Science Cairo University Giza Egypt physics Department College of Science AlFaisal University P.O. Box 50927 Riyadh 11533 Saudi Arabia

The low magnetic moment （MM） in diluted magnetic semiconductors （DMS） at low impurity doping levels has triggered considerable research into condensed magnetic semiconductors （CMS）.This work reports an ab-initio investigation of the electronic structures and magnetic properties of ZnO in a zinc-blende （ZB） structure doped with nickel ions. Ni-doped ZnO-based DMS and CMS exhibit a dominance of ferromagnetic coupling over antiferromagnetic. A robust increase in the magnetization has been observed as a function of Ni impurity levels. This material favors short-range magnetic interactions at the ground state, suggesting that the observed ferromagnetism is defined by the double exchange mechanism. The spin-polarized density of states （DOS） of Ni-doped ZnO characterizes it as half-metallic with a considerable energy gap for up-spin components and as metallic for-down spins. Half metallic Ni：ZnO based magnetic semiconductors with high magnetization are expected to have potential applications in spintronics.

关键词： ZnO diluted magnetic semiconductors ab-initio calculations electronic structure,magnetic properties

来源：

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

Dirty Data between Errors and Their Handling—A Firsthand Experience in Solving Dirty Data from Within

引用

International Journal of Intelligence Science 2023年第2期13卷 48-62页

作者： faheem Bukhatwa ahmed Laarfi Ismahan Salem Faculty of Computing Griffith College Dublin Ireland Brevard Public School Viera Florida USA Retired Benghazi Libya.

Managing large amounts of data is becoming part of everyday life in most organizations. Handling, analyzing, searching, and making predictions from big data is becoming the norm for many organizations of many interests. Big data provides the foundations for more benefits and higher values to be extracted from big data. As big data comes with countless benefits, it also comes with many challenges to fulfilling its expectations. Some of those problems haunting big data banks are being termed dirty data. This paper focuses on dirty data while working on an organization’s natural live information system. The author was responsible for studying and analyzing a faltering information system and planning and carrying out the required solutions and fixes. The importance of the work carried out lies in the high level of dirty data observed in the system. Therefore, this paper is based on the part of dirty data—the paper focuses on how the team suffered from dirty data and how it was dealt with.

关键词： Data Science Database Artificial Intelligence System Analysis Big Data

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Anti-Radical and Neuroprotective Potential of <i>Ficus infectoria</i>in Scopolamine Induced Memory Impairment in Mice

引用

Advances in Alzheimer's Disease 2018年第2期7卷 62-77页

作者： Kiran Zahid Syed Muhammad faheem Ahmad Maqsood ahmed Farah Khan Department of Botany Lahore College for Women University Lahore Pakistan UVAS—University of Veterinary and Animal Sciences Lahore Pakistan Riphah International University Lahore Pakistan

Ficus infectoria has a wide distribution in Bangladesh, Nepal, Pakistan, Sri Lanka, Southwest China and Indochina and is an enrich source of phytochemicals thereby possess antibacterial, antifungal and hyperglycaemic activities. In this study, we attempted to examine the cognitive ability of methanolic and ethanolic extract of F. infectoria fruit extract in scopolamine induced memory impairment in mice by using preliminary phytochemical and antioxidant tests, and the cognitive ability of the methanolic and ethanolic fruit extract of F. infectoria. Fruit extract was analyzed in scopolamine amnesia mice using passive avoidance approach. Piracetam was used as a reference drug (200 mg/Kg). Further confirmation was provided by means of mice brain homogenate biochemical tests. Maximum phytochemical, antioxidant activity and nootropic ability were observed in the ethanolic fruit extract of F. infectoria. Plant extract was used at three doses i.e. 75 mg/Kg, 150 mg/Kg and 300 mg/Kg and exhibited nootropic abilities in all tests used. Enhanced SDL value i.e. (291.2 ± 0.33+++###) was observed by the administration of plant extract at all dose range in comparison to reference drug i.e. piracetam (252.8 ± 1.60###) used in the study. The plant extract utilization has showed increase in total protein (25.08 ± 0.26+++### mg/g of tissue) and reduced glutathione content (33.0 ± 0.46+++### nmoles/mg of protein) and vice versa while low malondialehyde (MDA) (9.18 ± 0.17+++### nmoles/mg of protein) and AChE activity (0.067 ± 0.009+++### M/min/g protein). However, opposite situation was observed in the scopolamine amnesia mice. Hence it was concluded the plant extract possessed neuroprotective activity in the scopolamine induced cognitive decline in mice thereby used as cost effective natural medicines in near future.

关键词： Antioxidant Malondialdehyde Reduced Glutathione Acetylcholinestrase Scopolamine Hydrobromide Neuroprotective Ficus infectoria

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Dirty Data between Errors and Their Handling—A Firsthand Experience in Solving Dirty Data from Within

引用

International Journal of Intelligence Science（智能科学国际期刊） 2023年第2期

作者： faheem Bukhatwa ahmed Laarfi Ismahan Salem

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

A STUDY OF GENOTYPIC FREQUENCY OF VARIOUS BLOOD GROUP ALLELES

A STUDY OF GENOTYPIC FREQUENCY OF VARIOUS BLOOD GROUP ALLELE...

引用

The 1st Session of 2004 Workshop of Pakistan Academy of Sciences

作者： Mohammad Shoaib Khan faheem Tahir Mubashir ahmed Sheikh Fazli Subhan Birjees Mazhar Kazi Athar Saeed Dil Fariyal Deepa Sikandar Sultan Irshad Ali Musa Kaleem Baloch Public Health Division National Institute of HealthIslamabadPakistan Department of Clinical Pathology Jinnah Postgraduate Medical CentreKarachiPakistan Department of Chemistry Gomal UniversityD.I. KhanPakistan

A random population sample from urban and rural areas of Bannu region, Northwest Frontier Province（NWFP） of Pakistan was screened for distribution of blood groups. The objective was to identify the genotypic frequency of blood groups in the region, in order to comprehend the allelic diversity. Blood grouping was carried out over a period of 16 months from January 2002 to April 2003, and encompassed 2581 subjects, in which 57.09% were male and 42.9% female. These were categorized according to ABO/Rh system. Allele frequency was computed according to HardyWeinberg law. The distribution of phenotypes in the total sample was 0.3623, 0.3103, 0.2507 and0.0767 for groups B, A, O and AB, respectively, with 0.672 Rh-positive（R） and 0.328 Rh-negative（r）. B group was dominant in both the genders, and AB was rare in both males as well as females. The distribution of the alleles in the total sample was 0.345, 0.378 and 0.277 for I A, I B and i, *** studied population exhibited a predominance of group B, in the order of B＞A＞O＞AB, as well as Rh-positive antigen for both male（90.26%） and female（87.98%） subjects within the population,with Rh-negative men and women being 9.74% and 12.02% respectively.

关键词： Alleles gene frequency blood groups Rh factor transfusion Bannu Pakistan

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：