检索结果-南通市图书馆

Hybrid XGBoost model with hyperparameter tuning for prediction of liver disease with better accuracy

World Journal of Gastroenterology 2022年第46期28卷 6551-6563页

作者： Surjeet Dalal Edeh Michael Onyema Amit malik Department of CSE Amity UniversityGurugram 122413HaryanaIndia Department of Mathematics and Computer Science Coal City UniversityEnugu 400102Nigeria Department of CSE SRM UniversityDelhi-NCRSonipat 131001HaryanaIndia

BACKGROUND Liver disease indicates any pathology that can harm or destroy the liver or prevent it from normal *** global community has recently witnessed an increase in the mortality rate due to liver *** could be attributed to many factors,among which are human habits,awareness issues,poor healthcare,and late *** curb the growing threats from liver disease,early detection is critical to help reduce the risks and improve treatment *** technologies such as machine learning,as shown in this study,could be deployed to assist in enhancing its prediction and *** To present a more efficient system for timely prediction of liver disease using a hybrid eXtreme Gradient Boosting model with hyperparameter tuning with a view to assist in early detection,diagnosis,and reduction of risks and mortality associated with the *** The dataset used in this study consisted of 416 people with liver problems and 167 with no such *** data were collected from the state of Andhra Pradesh,India,through https://***/datasets/uciml/*** population was divided into two sets depending on the disease state of the *** binary information was recorded in the attribute"is_patient".RESULTS The results indicated that the chi-square automated interaction detection and classification and regression trees models achieved an accuracy level of 71.36%and 73.24%,respectively,which was much better than the conventional *** proposed solution would assist patients and physicians in tackling the problem of liver disease and ensuring that cases are detected early to prevent it from developing into cirrhosis(scarring)and to enhance the survival of *** study showed the potential of machine learning in health care,especially as it concerns disease prediction and *** This study contributed to the knowledge of machine learning application to health and to the efforts to

关键词： Liver infection Machine learning Chi-square automated interaction detection Classification and regression trees Decision tree XGBoost Hyperparameter tuning

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

Peristaltic Flow of Shear Thinning Fluid via Temperature-Dependent Viscosity and Thermal Conductivity

引用

Communications in Theoretical Physics 2019年第4期71卷 367-376页

作者： S.Noreen A.malik M.M.Rashidi Department of Mathematics COMSATS University Islamabad Shanghai Automotive Wind Tunnel Center Tongji University

In this paper Williamson ?uid is taken into account to study its peristaltic ?ow with heat effects. The study is carried out in a wave frame of reference for symmetric channel. Analysis of heat transfer is accomplished by accounting the effects of non-constant thermal conductivity and viscosity and viscous dissipation. Modeling of fundamental equations is followed by the construction of closed form solutions for pressure gradient, stream function and temperature while assuming Reynold's number to be very low and wavelength to be very long. Double perturbation technique is employed, considering Weissenberg number and variable ?uid property parameter to be very small. The effects of emerging parameters on pumping, trapping, axial pressure gradient, heat transfer coe?cient, pressure rise,velocity pro?le and temperature are analyzed through the graphical representation. A direct relation is observed between temperature and thermal conductivity whereas the indirect proportionality with viscosity. The heat transfer coe?cient is lower for a ?uid with variable thermal conductivity and variable viscosity as compared to the ?uid with constant thermal conductivity and constant viscosity.

关键词： temperature-dependent viscosity temperature-dependent thermal conductivity shear thinningfluid peristalsis

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

Post deformation analysis of the ballistic impacted magnesium alloys,a short-review

引用

Journal of Magnesium and Alloys 2021年第5期9卷 1518-1535页

作者： Abdul malik Yangwei Wang Cheng Huanwu Faisal Nazeer Muhammad Abubaker Khan School of Material Science and Engineering Beijing Institute of TechnologyBeijing 100081China National Key Laboratory of Science and Technology on Materials under Shock and Impact Beijing 100081China

From the mechanistic point of view,magnesium alloys are lightweight materials and are receiving increasing attention in the past several years in various *** Zhen from Harbin Institute of Technology,China and the United State military are showing keen interest in the development of magnesium alloys as ballistic resistant ***,their use is still limited owing to low ductility,low formability,and average mechanical *** magnesium alloys components must withstand the shockwave under hypervelocity ballistic *** ballistic testing can produce gradient variations of the strain and stress-energy away from the crater,and useful for the development of these alloys in the military and aerospace ***,the present review article shed light on the post deformation analysis of the Mg alloys subjected to the different projectiles under ballistic impact,and the underlying mechanisms were *** the end,some important issues regarding the ballistic impact and further studies in this field were proposed.

关键词： Ballistic behavior Mg alloys Deformed zones Texture Hardness

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

Accurate Location Estimation of Smart Dusts Using Machine Learning

引用

Computers, Materials & Continua 2022年第6期71卷 6165-6181页

作者： Shariq Bashir Owais Ahmed malik Daphne Teck Ching Lai Institute of Applied Data Analytics(IADA) Universiti Brunei Darussalam(UBD)GadongBE1410Brunei Darussalam School of Digital Sciences(SDS) Universiti Brunei Darussalam(UBD)GadongBE1410Brunei Darussalam

Traditional wireless sensor networks(WSNs)are not suitable for rough terrains that are difficult or impossible to access by *** dust is a technology that works with the combination of many tiny sensors which is highly useful for obtaining remote sensing information from rough *** tiny sensors are sprinkled in large numbers on rough terrains using airborne distribution through drones or aircraftwithout manually setting their *** it is clear that a number of remote sensing applications can benefit from this technology,but the small size of smart dust fundamentally restricts the integration of advanced hardware on tiny *** raises many challenges including how to estimate the location of events sensed by the smart *** solutions on estimating the location of events sensed by the smart dusts are not suitable for monitoring rough terrains as these solutions depend on relay sensors and laser patterns which have their own limitations in terms of power constraint and uneven *** study proposes a novel machine learning based localization algorithm for estimating the location of *** approach utilizes timestamps(time of arrival)of sensed events received at base stations by assembling them into a multidimensional vector and input to a machine learning classifier for estimating the *** to the unavailability of real smart dusts,we built a simulator for analysing the accuracy of the proposed approach formonitoring forest *** experiments on the simulator show reasonable accuracy of the approach.

关键词： Smart dust sensor localization remote sensing machine learning algorithms Internet of Things sensor applications

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

Alkaloids, flavonoids, polyphenols might be responsible for potent antiarthritic effect of Solanum nigrum

引用

Journal of Traditional Chinese Medicine 2019年第5期39卷 632-641页

作者： Alamgeer Shanila Akhter Ambreen malik Uttra Umme Habiba Hasan Laboratory of Cardiovascular Research and Integrative Pharmacology College of Pharmacy University of Sargodha

OBJECTIVE: To evaluate in vitro and in vivo antiarthritic potential of Solanum nigrum (S. nigrum). METHODS: Aqueous methanolic (70∶30) extract of S. nigrum was prepared. The in vitro antiarthritic effect was evaluated in terms of its inhibition of protein denaturation and membrane stabilization. While, formaldehyde, complete Freund's adjuvant (CFA) and Collagen induced arthritis rat models were used to study in vivo antiarthritic activities of S. nigrum at dose level of 200, 400 and 800 mg/kg. RESULTS: The extract exhibited inhibition of protein denaturation and protected red blood cell by stabilizing the membranes in a concentration dependent manner, with maximum effect attained at 800 μg/mL. Moreover, there was a marked reduction in paw edema observed in extract treated animals, when compared to arthritic control animals in all in vivo models and 800 mg/kg dose got maximum reduction of paw edema. In CFA and collagen models, plant extract restored body weight, hematologic parameters, radiographic and histopathoOBJECTIVE: To evaluate in vitro and in vivo antiarthritic potential of Solanum nigrum (S. nigrum). METHODS: Aqueous methanolic (70∶30) extract of S. nigrum was prepared. The in vitro antiarthritic effect was evaluated in terms of its inhibition of protein denaturation and membrane stabilization. While, formaldehyde, complete Freund's adjuvant (CFA) and Collagen induced arthritis rat models were used to study in vivo antiarthritic activities of S. nigrum at dose level of 200, 400 and 800 mg/kg. RESULTS: The extract exhibited inhibition of protein denaturation and protected red blood cell by stabilizing the membranes in a concentration dependent manner, with maximum effect attained at 800 μg/mL. Moreover, there was a marked reduction in paw edema observed in extract treated animals, when compared to arthritic control animals in all in vivo models and 800 mg/kg dose got maximum reduction of paw edema. In CFA and collagen models, plant extract restored body weigh

关键词： Arthritis Solanum nigrum Protein denaturation Formaldehyde Freund's adjuvant Collagen

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

New solitary wave and other exact solutions of the van der Waals normal form for granular materials

引用

Journal of Ocean Engineering and Science 2022年第2期7卷 170-177页

作者： Asim Zafar Tahir Mushtaq Aslam malik Ahmet Bekir Department of Mathematics COMSATS University IslamabadVehari CampusPakistan Department of Mathematics University of the PunjabLahorePakistan Neighbourhood of Akcaglan Imarli StreetNumber:28/426030EskisehirTurkey

The investigation of exact solitary wave solutions to the nonlinear partial differential equation plays an important role to understand any physical phenomena in diverse applied *** current work is re-lated to the most prominent nonlinear model named as the van der Waals normal form that appeared naturally and also industrially for the granular *** oceanography,the sea ice,sand and snow are some examples of aforesaid matter among *** employ two novel integration approaches named as the simplest equation method and the exp a function method to explore the above mentioned van der Waals *** a backlash,many new solitary waves and other exact solutions are *** ob-tained results depict that the used approaches are simple and effective to deal with nonlinear ***,the numerical simulation of some solutions via two and three dimension graphical configurations are presented for certainty and exactness.

关键词： Van der Waals equation Novel integration schemes Solitary wave solutions

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

A Restricted SIR Model with Vaccination Effect for the Epidemic Outbreaks Concerning COVID-19

引用

Computer Modeling in Engineering & Sciences 2023年第12期137卷 2409-2425页

作者： Ibtehal Alazman Kholoud Saad Albalawi Pranay Goswami Kuldeep malik Department of Mathematics and Statistics College of ScienceImam Mohammad Ibn Saud Islamic UniversityRiyadh11566Saudi Arabia School of Liberal Studies Dr.B.R.Ambedkar University DelhiDelhi110006India

This paper presents a restricted SIRmathematicalmodel to analyze the evolution of a contagious infectious disease outbreak(COVID-19)using available *** new model focuses on two main concepts:first,it can present multiple waves of the disease,and second,it analyzes how far an infection can be eradicated with the help of *** stability analysis of the equilibrium points for the suggested model is initially investigated by identifying the matching equilibrium points and examining their *** basic reproduction number is calculated,and the positivity of the solutions is *** simulations are performed to determine if it is multipeak and evaluate vaccination’s *** addition,the proposed model is compared to the literature already published and the effectiveness of vaccination has been recorded.

关键词： Restricted SIR model equilibrium points and stability numerical simulation

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

Pointing fingers at blood contact:mechanisms of subventricular zone neural stem cell differentiation

引用

Neural Regeneration Research 2023年第1期18卷 137-138页

作者： Subash C.malik Yu-Hsuan Chu Christian Schachtrup Institute of Anatomy and Cell Biology Faculty of MedicineUniversity of FreiburgFreiburgGermany Faculty of Biology University of FreiburgFreiburgGermany Center for Basics in NeuroModulation(NeuroModulBasics) Faculty of MedicineUniversity of FreiburgFreiburgGermany

The limited ability of the central nervous system(CNS)to regenerate in adult mammals after injury or disease is a significant ***,neural stem/progenitor cells(NSPCs)offer great promise for regenerating the *** or transplanted NSPCs contribute to repair processes,but their differentiation and function are abnormal in CNS injury and *** main reasons for these abnormalities are changes in the extracellular environment in the injured CNS that affect signaling pathways and transcriptional regulation in NSPCs.

关键词： ventricular neural injury

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

Leptin and its actions on reproduction in males

引用

Asian Journal of Andrology 2019年第3期21卷 296-299页

作者： Ifrah Alam malik Damayanthi Durairajanayagam Harbindar Jeet Singh Department of Physiology Faculty of Medicine Universiti Teknologi MARA Sungai Buloh Campus Sg Buloh 47000 Selangor Malaysia I-PPerForM Universiti Teknologi MARA Sungai Buloh Campus Sg Buloh 47000 Selangor Malaysia

Leptin, an adipocyte-derived hormone, serves numerous physiological functions in the body, particularly during puberty and reproduction. The exact mechanism by which leptin activates the gonadotropin-releasing hormone (GnRH) neurons to trigger puberty and reproduction remains unclear. Given the widespread distribution of leptin receptors in the body, both central and peripheral mechanisms involving the hypothalamic-pituitary-gonadal axis have been hypothesized. Leptin is necessary for normal reproductive function, but when present in excess, it can have detrimental effects on the male reproductive system. Human and animal studies point to leptin as a link between infertility and obesity, a suggestion that is corroborated by findings of low sperm count, increased sperm abnormalities, oxidative stress, and increased leptin levels in obese men. In addition, daily leptin administration to normal-weight rats has been shown to result in similar abnormalities in sperm parameters. The major pathways causing these abnormalities remain unidentified;however, these adverse effects have been attributed to leptin-induced increased oxidative stress because they are prevented by concurrently administering melatonin. Studies on leptin and its impact on sperm function are highly relevant in understanding and managing male infertility, particularly in overweight and obese men.

关键词： leptin male infertility obesity spermatozoa sperm DNA fragmentation

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

COVID-19 and Learning Styles: GCET as Case Study

引用

Computers, Materials & Continua 2021年第7期68卷 103-115页

作者： Mazhar Hussain malik Sid Ahmed Amjed Sulaiman Al Hasani Department of Computing and Information Technology Global College of Engineering and TechnologyMuscatSultanate of Oman Department of Electrical and Electronics Engineering Global College of Engineering and TechnologyMuscatSultanate of Oman

The COVID-19 pandemic has caused higher educational institutions around the world to close campus-based activities and move to online *** aim of this paper is to present the case of Global College of Engineering and Technology(GCET)and how its practices including teaching,students/staff support,assessments,and exam policies were *** paper investigates the mediating role of no detriment policy impact on students’result along with the challenges faced by the higher educational institution,recommendations and *** investigation concludes that the strategies adopted for online delivery,student support,assessments and exam policies have helped students to effectively cope with the teaching and learning challenges posed by the COVID-19 pandemic without affecting their academic *** study shows that 99%of students were able to maintain the same or better level of performance during the 1st COVID-19 *** percent of students had shown a slight decrease in their performance(about 1%–2%)with respect to their overall marks *** no detriment policy has succoured those 1%of the students to maintain their overall performance to what it used to be pre-COVID-19 ***,the paper provides the list of challenges and suggestions for smooth conduction of online education.

关键词： Higher education learning styles COVID-19 challenges and strategies no detriment policy engineering and technology modules

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

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

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

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：