检索结果-南通市图书馆

Peer pressure and academic stress among junior high school students:a cross-sectional study

Frontiers of Nursing 2024年第2期11卷 191-199页

作者： Rika Sarfika.i Made MohYanuar Saifudin Hema Ma.ini Nursyirwan Effendi Bunga Permata Wenny Mental Health and Community Department Faculty of NursingUniversitas AndalasPadangWest Sumatra 25163Indonesia Department of Medicine and Health Faculty of MedicinePublic Healthand NursingUniversitas Gadjah MadaYogyakarta 55281Indonesia Department of Medical Surgical Faculty of NursingUniversitas AndalasPadangWest Sumatra 25163Indonesia Anthropology Department Faculty of Social and Political SciencesUniversitas AndalasPadangWest Sumatra 25163Indonesia

Objective:The objective of the study was to explore the connection between peer pressure and academic stress among junior high school ***:This descriptive correla.ional study was conducted to investigate the link between perceived peer pressure and academic *** study involved a total of 525 adolescents,aged 14-19 years,drawn from 6 public junior high schools(PJHS)in Padang,indonesia,using purposive *** stress and perceived peer pressure were assessed using the Educa.ional Stress Scale for Adolescents(ESSA)and the Perceived Peer Pressure Scale(PPPS).Results:The findings indicated significant va.ia.ions in stress levels among students in different grade levels(7th,8th,and 9th grades)(Pile there were no noteworthy differences in peer pressure across these grade levels(P>0.05).Additionally,there was a positive correla.ion observed between perceived peer pressure and academic stress(r=0.14,Piple regression analyses,incorpora.ing demographic va.iables and perceived peer pressure as independent factors,yielded sta.istically significant results(adjusted R^(2)=0.082,F=4.33,Pirect impact on academic stress among adolescents,with class level and parents’educa.ional background media.ing the rela.ionship between academic stress and adolescent beha.ioral ***:These findings underscore the importance of addressing both external and internal factors at the individual,fa.ily,school,and societal levels to enhance adolescents’psychological resilience and mitigate problem beha.iors.

关键词： academic stress adolescents beha.ioral problem indonesia peer pressure students

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

ioT Task Offloa.ing in Edge Computing Using Non-Coopera.ive Game Theory for Healthcare Systems

引用

Computer Modeling in Engineering & Sciences 2024年第5期139卷 1487-1503页

作者： Dinesh Mavaluru Chettupally a.il Ca.ie Ahmed i.Alutaibi Sa.ish Anamalamudi Bayapa Reddy Narapureddy Mura.i Krishna Enduri Md Ezaz Ahmed School of Computing and informa.ics Saudi Electronic UniversityRiyadhSaudi Arabia Department of Computer Engineering SRM University APGunturIndia College of Computer and informa.ion Sciences Majmaah UniversityAl Majma’ahSaudi Arabia Department of Public Health College of Applied Medical SciencesKing Khalid UniversityAbhaSaudi Arabia

in this paper,we present a comprehensive system model for industrial internet of Things(iioT)networks empowered by Non-Orthogonal Multiple Access(NOMA)and Mobile Edge Computing(MEC)*** network comprises essential components such as base sta.ions,edge servers,and numerous iioT devices characterized by limited energy and computing *** central challenge addressed is the optimiza.ion of resource alloca.ion and task distribution while adhering to stringent queueing delay constraints and minimizing overall energy *** system operates in discrete time slots and employs a qua.i-sta.ic approach,with a specific focus on the complexities of task partitioning and the management of constrained resources within the iioT *** study makes valuable contributions to the field by enhancing the understanding of resourceefficient management and task alloca.ion,particularly relevant in real-time industrial *** results indicate that our proposed algorithmsignificantly outperforms existing approaches,reducing queue backlog by 45.32% and 17.25% compared to SMRA and ACRA while achieving a 27.31% and 74.12% improvement in Qn ***,the algorithmeffectively balances complexity and network performance,as demonstratedwhen reducing the number of devices in each group(Ng)from 200 to 50,resulting in a 97.21% reduction in complexity with only a 7.35% increase in energy *** research offers a practical solution for optimizing iioT networks in real-time industrial settings.

关键词： internet of Things edge computing offloa.ing NOMA

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

Machine learning-based compa.ison of factors influencing estimated glomerular filtra.ion rate in Chinese women with or without nonalcoholic fatty liver

引用

World Journal of Clinical Cases 2024年第15期12卷 2506-2521页

作者： i-Chien Chen Lin-Ju Chou Shih-Chen Huang Ta-Wei Chu Shang-Sen Lee Department of Nursing Kaohsiung Armed Forces General HospitalKaohsiung 802Taiwan Department of Obstetrics and Gynecology Tri-Service General HospitalNational Defense Medical CenterTaipei 114Taiwan Chief Executive Officer's Office MJ Health Research FoundationTaipei 114Taiwan Department of Urology Taichung Tzu Chi HospitalBuddhist Tzu Chi Medical FoundationTaichung 427Taiwan School of Medicine Tzu Chi UniversityHualian 970Taiwan Department of Urology Tri-Service General HospitalNational Defense Medical CenterTaipei 114Taiwan

BACKGROUND The prevalence of non-alcoholic fatty liver(NAFLD)has increased *** with NAFLD are known to have higher chance for renal function *** past studies used tra.itional multiple linear regression(MLR)to identify risk factors for decreased estimated glomerular filtra.ion rate(eGFR).However,medical research is increa.ingly relying on emerging machine learning(Mach-L)*** present study enrolled healthy women to identify factors affecting eGFR in subjects with and without NAFLD(NAFLD+,NAFLD-)and to rank their *** To uses three different Mach-L methods to identify key impact factors for eGFR in healthy women with and without *** A total of 65535 healthy female study participants were enrolled from the Taiwan MJ cohort,accounting for 32 independent va.iables including demographic,biochemistry and lifestyle parameters(independent va.iables),while eGFR was used as the dependent *** from MLR,three Mach-L methods were applied,including stochastic gra.ient boosting,eXtreme gra.ient boosting and elastic *** of estima.ion were used to define method accuracy,where smaller degree of error indicated better model *** income,albumin,eGFR,High density lipoprotein-Cholesterol,phosphorus,forced expiratory volume in one second(FEV1),and sleep time were all lower in the NAFLD+group,while other factors were all significantly higher except for smoking ***-L had lower estima.ion errors,thus outperforming *** Model 1,age,uric a.id(UA),FEV1,plasma calcium level(Ca),plasma albumin level(Alb)and T-bilirubin were the most important factors in the NAFLD+group,as opposed to age,UA,FEV1,Alb,lactic dehydrogenase(LDH)and Ca for the *** the importance percentage was much higher than the 2nd important factor,we built Model 2 by removing *** The eGFR were lower in the NAFLD+group compared to the NAFLD-group,with age being was the most important impact factor in both groups of he

关键词： Non-alcoholic fatty liver Estimated glomerular filtra.ion rate Machine learning Chinese women

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

intra-and interobserver relia.ility of ocular surface analyzer LacryDiag

引用

interna.ional Journal of Ophthalmology(English edition) 2024年第8期17卷 1418-1422页

作者： Eva Kos Valentina Cigić Mladen Bušić Mirjana Bjeloš Da.iborka Miletić Biljana KuzmanovićElabjer University Eye Clinic University Hospital“Sveti Duh”Sveti Duh 64Zagreb 10000Croatia Faculty of Dental Medicine and Health Care Osijek Faculty of Medicine OsijekUniversity Josip Juraj Strossmayer in OsijekOsijek 31000Croatia

AiM:To invastigate intra-and interobserver relia.ility of interferometry,tear meniscus height(TMH)measurement and meibography(MBG)of an ocular surface analyzer,LacryDiag(Quantel Medical,France).METHODS:Five consecutive measurements and subsequent analysis of interferometry,TMH,and MBG were recorded by two exa.iners using the *** assess intra-and interobserver relia.ility,we used Cohen’s kappa for categorical va.iables(interferometry),or intraclass correla.ion coefficient for continuous va.iables(TMH,MBG).RESULTS:Thirty eyes of 30 exa.inees were *** both observers,there was excellent intraobserver relia.ility for MBG(0.955 and 0.970 for observer 1 and 2,respectively).intraobserver relia.ility for observer 1 was substantial for interferometry(0.799),and excellent for TMH(0.863).Relia.ility for observer 2 was moderate for interferometry(0.535)and fair to good for TMH(0.431).interobserver relia.ility was poor for interferometry(0.074)and fair to good for TMH(0.680)and MBG(0.414).CONCLUSiON:LacryDiag ocular surface analyzer in our study proves to be a reliable noninva.ive tool for the evalua.ion of TMH and *** for interferometry,poor interobserver relia.ility,fair to good intraobserver relia.ility for observer 1,and moderate for observer 2,leave room for improvement.

关键词： dry eye ocular surface analyzer interferometry tear meniscus height meibography

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

Effect of solidifica.ion cooling rate on microstructure and tribology characteristics of Zn-4Si alloy

引用

interna.ional Journal of Minerals,Metallurgy and Materials 2024年第2期31卷 362-373页

作者： F.Akba.i M.Golkaram S.Beyra.i G.Shira.i K.Mantashloo R.Taghiaba.i M.Sagha.i Yazdi i.Ansa.ian Department of Metallurgy and Material Science Imam Khomeini International University(IKIU)Qazvin ***Iran

The main objective of this work was to modify the microstructure and enhance the tribological properties of a new Zn-4Si al-loy through a high solidifica.ion cooling rate(SCR).According to the results,by increa.ing the SCR from 2.0 to 59.5℃/s the average size of primary Si particles and that of the grains reduced from 76.1 and 3780μm to less than about 14.6 and 460μm,***-ing the SCR also enhanced the microstructural homogeneity,decreased the porosity content(by 50%),and increased the matrix hardness(by 36%).These microstructural changes enhanced the tribological *** instance,under the applied pressure of 0.5 MPa,an in-crease in the SCR from 2.0 to 59.5℃/s decreased the wear rate and the average friction coefficient of the alloy by 57%and 23%,*** wear mecha.ism was also changed from the severe dela.ina.ion,adhesion,and abra.ion in the slowly-cooled alloy to the mild tribolayer dela.ina.ion/abra.ion in the high-cooling-rate-solidified sample.

关键词： zinc-silicon alloy primary silicon solidifica.ion cooling rate tribology sliding wear

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

Photoluminescence,structural and antibacterial properties of co-dopedβ-Ca_(3)(PO_(4))_(2)-type phosphates Ca_(8)CuRE(PO_(4))_(7)(RE=Eu-Er)

引用

Journal of Rare Earths 2024年第9期42卷 1658-1668,I0002页

作者： ivan V.Nikiforov Ekaterina V.iliin Bogdan i.Lazoryak Sergey M.Aksenov Pavel V.Slukin Dina V.Deyneko Department of Chemistry Lomonosov Moscow State University119991MoscowRussia Laboratory of Arctic Mineralogy and Material Sciences Kola Science CentreRussian Academy of Sciences184209ApatityRussia Geological institute Kola Science CentreRussian Academy of Sciences184209ApatityRussia State Scientific Center of Applied Microbiology and Biotechnology of Rospotrebnadzor 24 Block A142279ObolenskRussia

Novel Ca_(8)CuRE(PO_(4))_(7)where RE^(3+)=Eu^(3+),Tb^(3+),Dy^(3+),Ho^(3+)and Er^(3+)were synthesized by a solid-state method in *** structures of the samples were characterized by powder X-ray diffraction using Rietveld refinement to determine the occupa.ion of crystal *** samples are found to have a centrosymmetric structure with space group R3c,as shown by dielectric *** synthesized Ca_(8)CuRE(PO_(4))_(7)samples have multifunctional *** Cu^(2+)ions provide antibacterial properties,while the rare earth elements ions exhibit luminescence properties,and theβ-Ca_3(PO_(4))_(2)-type host is *** photoluminescence properties of RE^(3+)ions were studied and compared with other simmilar Ca_(8)MRE(PO_(4))_(7)phosphates,where M is a divalent *** photoluminescence intensity quenching in terms of energy transfer from RE^(3+)to Cu^(2+)is *** bioactive properties were studied in rela.ion to antibacterial activity against *** and *** syntesized Ca_(8)CuRE(PO_(4))_(7)samples demonstrate very high and stable inhibition of bacteria *** correla.ion between crystal structure and properties is *** combining multiple approaches to the directio nal design of such materials,several important properties within a single chemical compound to achieve biovisua.iza.ion and bioactive properties simultaneously can be combined.

关键词： β-Ca_(3)(PO_(4))_(2) Whitlockite-type structure Bioactive phosphates TCP Photoluminescence Rare earths

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

Oil-source correla.ion and Paleozoic source rock analysis in the Siwa Ba.in,Western Desert:insights from well-logs,Rock-Eval pyrolysis,and biomarker data

引用

Energy Geoscience 2024年第3期5卷 313-327页

作者： Mohamed i.Abdel-Fattah Mohamed Reda Mohamed Fathy Diaa A.Saada.i Fahad Alshehri Mohamed S.Ahmed Petroleum Geosciences and Remote Sensing Program Department of Applied Physics and AstronomyCollege of SciencesUniversity of SharjahSharjah27272United Arab Emirates Geology Department Faculty of ScienceSuez Canal UniversityIsmailiaEgypt Faculty of Science Geology DepartmentAl-Azhar UniversityP.O.Box 11884Nasr CityCairoEgypt Abdullah Alrushaid Chair for Earth Science Remote Sensing Research Geology and Geophysics DepartmentCollege of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

Understanding the origins of potential source rocks and unraveling the intricate connections between reservoir oils and their source forma.ions in the Siwa Ba.in(Western Desert,Egypt)necessitate a thorough oil-source correla.ion *** objective is achieved through a meticulous analysis of well-log responses,Rock-Eval pyrolysis,and biomarker *** analysis of Total Orga.ic Carbon across 31 samples representing Paleozoic forma.ions in the Siwa A-1X well reveals a spectrum of orga.ic richness ranging from 0.17 wt%to 2.04 wt%,thereby highlighting diverse levels of orga.ic content and the presence of both Type ii and Type iii *** of the fingerprint characteristics of eight samples from the well suggests that the Dhiffah Forma.ion comprises a blend of terrestrial and ma.ine orga.ic ***,a significant contribution from more oxidized residual orga.ic matter and gas-prone Type iii kerogen is ***,the Desouky and Zeitoun forma.ions exhibit mixed orga.ic matter indica.ive of a transitional environment,and thus featuring a pronounced ma.ine influence within a more reducing setting,which is associated with Type ii *** analysis of five oil samples from different wells—SiWA L-1X,SiWA R-3X,SiWA D-1X,PTAH 5X,and PTAH 6X,it is evident that terrestrial orga.ic matter,augmented by considerable ma.ine input,was deposited in an oxidizing environment,and contains Type iii *** scrutiny confirms the coexistence of mixed terrestrial orga.ic matter within varying redox *** is the uniformity of identified kerogen Types ii and iii across all samples,known to have potential for hydrocarbon *** discovery presented in this paper unveils captiva.ing prospects concerning the genesis of oil in the Jurassic Safa reservoir,suggesting potential links to Paleozoic sources or even origina.ing from the Safa Member *** revela.ions mark a substantial advancement in understanding source

关键词： Biomarker data Oil-source correla.ion Rock-Eval pyrolysis Source rocks Siwa Ba.in

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

Electro-Optical Model of Soiling Effects on Photovoltaic Panels and Performance implica.ions

引用

Energy Engineering 2024年第2期121卷 243-258页

作者： A.Asbayou G.P.Smestad i.ismail A.Soussi A.Elfanaoui L.Bouhouch a.ihlal Laboratory of Materials and Renewable Energies University Ibn ZohrAgadir80000Morocco Sol ideas Technology Development San José95150USA

in this paper,a detailed model of a photovoltaic(PV)panel is used to study the accumula.ion of dust on solar *** presence of dust diminishes the incident light intensity penetra.ing the panel’s cover glass,as it increases the reflection of light by *** phenomenon,commonly known as the“soiling effect”,presents a significant challenge to PV systems on a global *** ba.ic models of the equivalent circuits of a solar cell can be found,namely the single-diode model and the two-diode *** limita.ion of efficiency data.in manufacturers’datasheets has encouraged us to develop an equivalent electrical model that is efficient under dust conditions,integrated with optical transmittance considera.ions to investigate the soiling *** proposed approach is based on the use of experimental current-voltage(i-V)characteristics with simulated data using MATLAB/*** research outcomes underscores the fea.ibility of accurately quantifying the reduction in energy production resulting from soiling by assessing the optical transmittance of accumulated dust on the surface of PV glass.

关键词： Photovoltaics solar energy optical transmittance soiling dust PV performance

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 review of sa.ivary composition changes induced by fasting and its impact on health

引用

Food Science and Human Wellness 2024年第1期13卷 50-64页

作者： Nurul Fadhilah Kamalul a.ipin Nidayu Za.id Mohd Aizat Abdul Ra.im Hashim Yaacob Parvez i.Ha.is Zubaidah Ha.i AbdRa.im Rauzah Hashim School of Chemical Engineering College of EngineeringUniversiti Teknologi MARAShah Alam 40450Malaysia Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly Department of ChemistryFaculty of ScienceUniversiti MalayaKuala Lumpur 50603Malaysia Department of Oral and Cra.iofa.ial Sciences Faculty of DentistryUniversiti MalayaKuala Lumpur 50603Malaysia UMSC Dental Specia.ist Clinic UM Dentistry TowerUniversiti MalayaMedical CentreKuala Lumpur 50603Malaysia Leicester School of Allied Health Sciences De Montfort UniversityLeicester LE19BHUnited Kingdom Chancellery(Research and innova.ion) Universiti MalayaKuala Lumpur 50603Malaysia

Human sa.iva.is an indispensable fluid that maintains a healthy oral ca.ity which otherwise can lead to oral diseases(dental ca.ies and periodontitis).in addition,sa.ivary metabolites and microbiome profile provide early detection of systemic diseases such as cancer and *** diagnostic has gained popula.ity due to its non-inva.ive sampling ***(abstinence from food or drink or both)research for weight loss and improve health is common,but studies using fasting sa.iva are *** metabolites in fasting sa.iva have been reported with interesting results,which can be enhanced by considering different confounding *** example,fasting sa.iva contains higher sa.ivary nitrite,which is related to nitric oxide(NO).NO is a vasodilator supporting the healthy function of endothelial cells and its deficiency is connected to many *** timely supply of NO through exogenous and endogenous means is highlighted and the potential advantage of fasting sa.ivary composition changes in rela.ion to COViD-19 infection is *** review aims to provide a general discussion on the sa.ivary composition,properties,and functions of the whole sa.iva.including the health benefits of fasting.

关键词： Sa.iva Fasting Nitrate Nitrite Nitric oxide

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

Development and testing of a high-power S-band klystron at BiNP SB RAS

引用

Nuclear Science and Techniques 2024年第7期35卷 58-67页

作者： A.Levichev A.Barnyakov S.Samoylov D.Nikiforov V.ivanov M.Arsentyeva D.Chekmenev O.Pavlov i.Pivovarov Budker institute of Nuclear Physics Lavrentyeva Av.11NovosibirskRussia630090 Novosibirsk State University Pirogova Str.2NovosibirskRussia630090

This paper details the development and testing of the first working prototype of the S-band high-power klystron,accomplished at the Budker institute of Nuclear Physics,Siberian Branch,Russian Academy of Sciences(BiNP SB RAS).Upon testing,the klystron demonstrated the following parameters:an opera.ing frequency of 2856 MHz and a peak power output of 50 *** paper presents the klystron's design,its constituent units,and pertinent processing procedures,along with discussions on the measurement of its parameters.

关键词： Klystron Linear accelerator Electron beam

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

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：