检索结果-南通市图书馆

Evaluation of Different Ultrasonographic m.dalities in the Diagnosis of m.rbidly Adherent Placenta: A Cross-Sectional Study

引用

Open Journal of Obstetrics and Gynecology 2019年第4期9卷 405-416页

作者： m.stafa Hussein m.ham.ed F. Ram.dan Abd ahmad m. abu-elhassan Ahm.d m. Abbas Alaa Eldin A. Youssef Departm.nt of Obstetrics & Gynecology Faculty of Medicine Assiut University Assiut Egypt

Objective: To com.are the accuracy of different ultrasonographic m.dalities;two-dim.nsional ultrasound (2D-US), color Doppler and three-dim.nsional power Doppler (3D-PD) in the antenatal diagnosis of the m.rbidly adherent placenta. Setting: Obstetrics and Gynecology Departm.nt, Faculty of m.dicine, Assiut University, Assiut, Egypt. Study Design: A cross-sectional study. m.thods: All patients fulfill the inclusions criteria: gestational age > 28 weeks, previous one or m.re cesarean delivery, previous uterine surgery, placenta previa, vitally stable patient and wom.n accepted to participate in the study were included. All patients were evaluated using 2D-US, color Doppler and 3D-PD before delivery. The final diagnosis was established by laparotom. and by histopathology of hysterectom. sam.le if hysterectom. would be done. Results: One-hundred fifty patients were enrolled in the study. 2D-US has higher sensitivity (86.96%) than 2D color Doppler (84.06%) and 3D-PD (79.71%) in the diagnosis of placenta accreta. On the other hand, 3D-PD has slightly higher specificity (83.95%) than color Doppler (82.72%) and 2D-US (77.78%) in the diagnosis of placenta accreta. The m.st sensitive param.ter in 2D-Us was the loss of retroplacental sonolucent zone (86.96%). As regards color Doppler, the m.st sensitive param.ter was the hypervascularity of the uterine-bladder interface (84.06%). Tortuous vascularity with chaotic branching was the m.st sensitive param.ter in 3D-PD with a sensitivity of 82.61%. Conclusions: The use of 3D power Doppler with both 2D-US and color Doppler as com.lem.ntary techniques could im.rove the antenatal diagnosis or exclusion of m.rbidly adherent placenta.

关键词： Color Doppler 3D-Power Doppler Placenta Accreta m.rbidly Adherent Placenta

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

Im.roving Generalization for Hyperspectral Im.ge Classification: The Im.act of Disjoint Sam.ling on Deep m.dels

引用

Com.uters, m.terials and Continua 2024年第1期81卷 503-532页

作者： ahmad m. m.zzara m. Distefano S. Khan A.m. Altuwaijri H.A. Departm.nt of Com.uter Science National University of Computer and Emerging Sciences Chiniot 35400 Pakistan Institute of Software Developm.nt and Engineering Innopolis University Innopolis 420500 Russian Federation Dipartim.nto di m.tem.tica e Inform.tica—m.FT University of Messina Messina 98121 Italy School of Com.uter Science University of Hull Hull HU6 7RX United Kingdom Departm.nt of Geography College of Humanities and Social Sciences King Saud University Riyadh 11451 Saudi Arabia

Disjoint sam.ling is critical for rigorous and unbiased evaluation of state-of-the-art (SOTA) m.dels e.g., Attention Graph and Vision Transform.r. When training, validation, and test sets overlap or share data, it introduces a bias that inflates perform.nce m.trics and prevents accurate assessm.nt of a m.del’s true ability to generalize to new exam.les. This paper presents an innovative disjoint sam.ling approach for training SOTA m.dels for the Hyperspectral Im.ge Classification (HSIC). By separating training, validation, and test data without overlap, the proposed m.thod facilitates a fairer evaluation of how well a m.del can classify pixels it was not exposed to during training or validation. Experim.nts dem.nstrate the approach significantly im.roves a m.del’s generalization com.ared to alternatives that include training and validation data in test data (A trivial approach involves testing the m.del on the entire Hyperspectral dataset to generate the ground truth m.ps. This approach produces higher accuracy but ultim.tely results in low generalization perform.nce). Disjoint sam.ling elim.nates data leakage between sets and provides reliable m.trics for benchm.rking progress in HSIC. Disjoint sam.ling is critical for advancing SOTA m.dels and their real-world application to large-scale land m.pping with Hyperspectral sensors. Overall, with the disjoint test set, the perform.nce of the deep m.dels achieves 96.36% accuracy on Indian Pines data, 99.73% on Pavia University data, 98.29% on University of Houston data, 99.43% on Botswana data, and 99.88% on Salinas data. © 2024 The Authors.

关键词： disjoint sam.ling Graph CNN Hyperspectral im.ge classification spatial-spectral transform.r

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

On m.lti-Granulation Rough Sets with Its Applications

引用

Com.uters, m.terials & Continua 2024年第4期79卷 1025-1038页

作者： Radwan abu-Gdairi R.m.reay m.Badr Departm.nt of m.them.tics Faculty of ScienceZarqa UniversityZarqa13132Jordan Departm.nt of m.them.tics Faculty of ScienceKafrelsheikh UniversityKafrelsheikh33516Egypt Departm.nt of m.them.tics Faculty of ScienceNew Valley UniversityEl Kharga72713Egypt

Recently,m.ch interest has been given tom.lti-granulation rough sets (m.RS), and various types ofm.RSm.delshave been developed from.different viewpoints. In this paper, we introduce two techniques for the classificationof m.RS. Firstly, we generate m.lti-topologies from.m.lti-relations defined in the universe. Hence, a novelapproxim.tion space is established by leveraging the underlying topological structure. The characteristics of thenewly proposed approxim.tion space are *** introduce an algorithm.or the reduction ***, a new approach for the classification ofm.RS based on neighborhood concepts is introduced. Finally, areal-life application from.m.dical records is introduced via our approach to the classification of m.RS.

关键词： m.lti-granulation rough sets data classifications inform.tion system. interior operators closure operators approxim.tion structures

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

Novel Fram.work for an Intrusion Detection System.Using m.ltiple Feature Selection m.thods Based on Deep Learning

引用

Tsinghua Science and Technology 2024年第4期29卷 948-958页

作者： A.E.m.Eljialy m.ham.ed Yousuf Uddin Sultan ahmad Departm.nt of Inform.tion System. College of Computer Engineering and SciencesPrince Sattam Bin Abdulaziz UniversityAlkharjSaudi Arabia Departm.nt of Com.uter Science College of Computer Engineering and SciencesPrince Sattam Bin Abdulaziz UniversityAlkharjSaudi Arabiaand also with University Center for Research and Development(UCRD)Department of Computer Science and EngineeringChandigarh UniversityPunjabIndia

Intrusion detection system. (IDSs) are deployed to detect anom.lies in real tim.. They classify a network’s incom.ng traffic as benign or anom.lous (attack). An efficient and robust IDS in software-defined networks is an inevitable com.onent of network security. The m.in challenges of such an IDS are achieving zero or extrem.ly low false positive rates and high detection rates. Internet of Things (IoT) networks run by using devices with m.nim.l resources. This situation m.kes deploying traditional IDSs in IoT networks unfeasible. m.chine learning (m.) techniques are extensively applied to build robust IDSs. m.ny researchers have utilized different m. m.thods and techniques to address the above challenges. The developm.nt of an efficient IDS starts with a good feature selection process to avoid overfitting the m. m.del. This work proposes a m.ltiple feature selection process followed by classification. In this study, the Software-defined networking (SDN) dataset is used to train and test the proposed m.del. This m.del applies m.ltiple feature selection techniques to select high-scoring features from.a set of features. Highly relevant features for anom.ly detection are selected on the basis of their scores to generate the candidate dataset. m.ltiple classification algorithm. are applied to the candidate dataset to build m.dels. The proposed m.del exhibits considerable im.rovem.nt in the detection of attacks with high accuracy and low false positive rates, even with a few features selected.

关键词： random.forest feature selection decision tree software-defined network logistic regression intrusion detection system XGB classifier AdaBoost

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 Reputation-Based AODV Protocol for Blackhole and m.lfunction Nodes Detection and Avoidance

引用

Com.uters, m.terials & Continua 2024年第8期80卷 1867-1888页

作者： Qussai m.Yaseen m.nther Aldwairi ahmad m.nasrah Artificial Intelligence Research Center(AIRC) College of Engineering and Information TechnologyAjman UniversityAjman346United Arab Emirates Departm.nt of Com.uter Inform.tion System. Faculty of Computer and Information TechnologyJordan University of Science and TechnologyIrbid22110Jordan College of Technological Innovation Zayed UniversityAbu Dhabi144534United Arab Emirates Faculty of Inform.tion Technology and Com.uter Science Yarmouk UniversityIrbid21163Jordan Com.uter Inform.tion System. Higher Colleges of TechnologySharjah341214United Arab Emirates

Enhancing the security of Wireless Sensor Networks(WSNs)im.roves the usability of their ***,finding solutions to various attacks,such as the blackhole attack,is crucial for the success of WSN *** paper proposes an enhanced version of the AODV(Ad Hoc On-Dem.nd Distance Vector)protocol capable of detecting blackholes and m.lfunctioning benign nodes in WSNs,thereby avoiding them.when delivering *** proposed version em.loys a network-based reputation system.to select the best and m.st secure path to a *** achieve this goal,the proposed version utilizes the Watchdogs/Pathrater m.chanism. in AODV to gather and broadcast reputations to all network nodes to build the network-based reputation *** m.nim.ze the network overhead of the proposed approach,the paper uses reputation aggregator nodes only for forwarding reputation ***,to reduce the overhead of updating reputation tables,the paper proposes three m.chanism.,which are the prom.t broadcast,the regular broadcast,and the light broadcast *** proposed enhanced version has been designed to perform.effectively in dynam.c environm.nts such as m.bile WSNs where nodes,including blackholes,m.ve continuously,which is considered a challenge for other *** the proposed enhanced protocol,a node evaluates the security of different routes to a destination and can select the m.st secure routing *** paper provides an algorithm.that explains the proposed protocol in detail and dem.nstrates a case study that shows the operations of calculating and updating reputation values when nodes m.ve across different ***,the paper discusses the proposed approach’s overhead analysis to prove the proposed enhancem.nt’s correctness and applicability.

关键词： AODV blackhole m.lfunction nodes pathrater reputation system wireless sensor networks(WSNs) watchdogs

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

Epicardial adipose tissue in obesity with heart failure with preserved ejection fraction: Cardiovascular m.gnetic resonance biom.rker study

引用

World Journal of Cardiology 2024年第3期16卷 149-160页

作者： Ju-Wei Shao Bing-Hua Chen Kam.l abu-Shaban ahmad Baiyasi Lian-m.ng Wu Jing m. Departm.nt of Radiology The Affiliated Hospital of Yunnan UniversityKunming 650021Yunnan ProvinceChina Departm.nt of Radiology Ren Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127China Departm.nt of Radiology University of Toledo College of MedicineToledoOH 43623United States Departm.nt of Radiology Wayne State University School of MedicineDetroitMI 48201United States Departm.nt of Endocrinology Ren Ji HospitalShanghai Jiao Tong University School of MedicineShanghai 200127China

BACKGROUND Obesity has becom. a serious public health issue,significantly elevating the risk of various *** is a well-established contributor to Heart failure with preserved ejection fraction(HFpEF).Evaluating HFpEF in obesity is *** adipose tissue(EAT)has em.rged as a valuable tool for validating prognostic biom.rkers and guiding treatm.nt ***,assessing EAT is of param.unt *** m.gnetic resonance(Cm.)im.ging is acknowledged as the gold standard for analyzing cardiac function and *** hope to use Cm. to assess EAT as a bioim.ging m.rker to evaluate HFpEF in obese *** To assess the diagnostic utility of Cm. for evaluating heart failure with preserved ejection fraction[HFpEF;left ventricular(LV)ejection fraction≥50%]by m.asuring the epicardial adipose tissue(EAT)volum.s and EAT m.ss in obese *** Sixty-two obese patients were divided into two groups for a case-control study based on whether or not they had heart failure with *** two groups were defined as HFpEF+and HFpEF-.LV geom.try,global systolic function,EAT volum.s and EAT m.ss of all subjects were obtained using cine m.gnetic resonance *** Forty-five patients of HFpEF-group and seventeen patients of HFpEF+group were *** m.ss index(g/m.)of HFpEF+group was higher than HFpEF-group(Pm.s,EAT volum. index,EAT m.ss,EAT m.ss index and the ratio of EAT/[left atrial(LA)left-right(LR)diam.ter]were higher com.ared to HFpEF-group(Pm.ltivariate analysis,Higher EAT/LA LR diam.ter ratio was associated with higher odds ratio of *** EAT/LA LR diam.ter ratio is highly associated with HFpEF in obese *** is plausible that there m.y be utility in Cm. for assessing obese patients for HFpEF using EAT/LA LR diam.ter ratio as a diagnostic *** prospective studies,are needed to validate these proof-of-concept findings.

关键词： Heart failure with preserved ejection fraction Epicardial adipose tissue Obesity Cardiac m.gnetic resonance

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

Correlation between structural phase transition and physical properties of Co^(2+)/Gd^(3+)co-substituted copper ferrite

引用

Journal of Rare Earths 2024年第7期42卷 1344-1353,I0006页

作者： m.hsen Choupani ahmad Gholizadeh School of Physics Damghan UniversityDamghan36716-45667Iran

The doping of the spinel ferrites with selective cations usually im.roves the properties of the parent *** effect of Co^(2+)/Gd^(3+)co-substitution on the m.crostructure,optical,and m.gnetic properties of Cu1-xCoxFe2-xGdxO4 prepared by the citrate-nitrate auto-com.ustion synthesis was *** of the sam.les was perform.d with powder X-ray diffraction(XRD),Ram.n and Fouriertransform.infrared(FTIR)spectroscopy,field-em.ssion scanning electron m.croscopy,X-ray energydispersive spectroscopy,UV-Vis spectroscopy,and a vibrating sam.le *** results of XRD,Ram.n,and FTIR analysis show a gradual structural phase transition from.a tetragonal(I41/am.)structure to a cubic(Fd3m.*** bandgap energy of the studied sam.les is in a range of 1.57-1.75 eV with a m.nim.m.in sam.le x=0.06 and then *** investigations show that the presence of Co^(2+)/Gd^(3+)cations in an octahedral site of the copper ferrite structure could increase saturation m.gnetization and coercive field from.567.9 Oe and 23.62 em./g to 929.4 Oe and 28.27 em./g,respectively.

关键词： Spinel copper ferrite Citrate-nitrate m.thod Structure phase transition m.crostructure properties m.gnetic properties 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

Responses of Annual Variability of Vegetation NPP to Clim.te Variables Using Satellite Techniques in Gadarif State, Sudan

引用

Journal of Geographic Inform.tion System 2024年第2期16卷 136-147页

作者： Anwar m.ham.delhassan Bo Zhang Abdelrahim.E. Jahelnabi Em.n m. elhassan Faculty of Geography and Environm.ntal Sciences Northwest Normal University Lanzhou China Faculty of Agriculture University of Khartoum Khartoum Sudan Faculty of Agriculture Omdurman Islamic University Omdurman Sudan

Plants play an essential role in m.tter and energy transform.tions and are key m.ssengers in the carbon and energy cycle. Net prim.ry productivity (NPP) reflects the capability of plants to transform.solar energy into photosynthesis. It is very sensible for factors affecting on vegetation variability such as clim.te, soils, plant characteristics and hum.n activities. So, it can be used as an indicator of actual and potential trend of vegetation. In this study we used the actual NPP which was derived from.m.DIS to assess the response of NPP to clim.te variables in Gadarif State, from.2000 to 2010. The correlations between NPP and clim.te variables (tem.erature and precipitation) are calculated using Pearson’s Correlation Coefficient and ordinary least squares regression. The m.in results show the following 1) the correlation Coefficient between NPP and m.an annual tem.erature is Som.what negative for Feshaga, Rahd, Gadarif and Galabat areas and weakly negative in Faw area;2) the correlation Coefficient between NPP and annual total precipitation is weakly negative in Faw, Rahd and Galabat areas and som.what negative in Galabat and Rahd areas. This study dem.nstrated that the correlation analysis between NPP and clim.te variables (precipitation and tem.erature) gives reliably result of NPP responses to clim.te variables that is clearly in a very large scale of study area.

关键词： Clim.te Variables m.DIS NPP Clim.te Change Correlation Coefficient Gadarif State Rem.te Sensing GIS 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

Cancer cell cycle heterogeneity as a critical determ.nant of therapeutic resistance

引用

Genes & Diseases 2024年第1期11卷 189-204页

作者： Ebrahim.H.m.leki ahmad Reza Bahram. m.ryam.m.m.tin Departm.nt of Biology Faculty of ScienceFerdowsi University of Mashhad*** MashhadIran Jagiellonian Centre for Experim.ntal Therapeutics(JCET) Jagiellonian University31-007 KrakowPoland Doctoral School of Exact and Natural Sciences Jagiellonian University30-348 KrakowPoland Industrial Biotechnology Research Group Institute of BiotechnologyFerdowsi University of Mashhad*** MashhadIran Novel Diagnostics and Therapeutics Research Group Institute of BiotechnologyFerdowsi University of Mashhad***MashhadIran Stem.Cell and Regenerative m.dicine Research Group Iranian Academic Center for EducationCulture and Research(ACECR)Khorasan Razavi Branch917751376 MashhadIran

Intra-tum.r heterogeneity is now arguably one of the m.st-studied topics in tum.r biology,as it represents a m.jor obstacle to effective cancer *** tum.r cells are highly diverse at genetic,epigenetic,and phenotypic levels,intra-tum.r heterogeneity can be assum.d as an im.ortant contributing factor to the nullification of chem.therapeutic effects,and recurrence of the *** on the role of heterogeneous subpopulations of cancer cells with varying cell-cycle dynam.cs and behavior during cancer progression and treatm.nt;herein,we aim.to establish a com.rehensive definition for adaptation of neoplastic cells against *** discuss two parallel and yet distinct subpopulations of tum.r cells that play pivotal roles in reducing the effects of chem.therapy:"resistant"and"tolerant"***,this review also highlights the im.act of the quiescent phase of the cell cycle as a survival m.chanism.for cancer *** understanding the m.chanism. under-lying the quiescence,it provides an insightful perspective on cancer stem.cells(CsCs)and their dual and intertwined functions based on their cell cycle state in response to ***-over,CSCs,epithelial-m.senchym.l transform.d cells,circulating tum.r cells(CTCs),and dissem.nated tum.r cells(DTCs),which are m.stly in a quiescent state of the cell cycle are proved to have m.ltiple biological links and can be im.licated in our viewpoint of cell cycle heterogeneity in ***,increasing our knowledge of cell cycle heterogeneity is a key to identifying new therapeutic solutions,and this em.rging concept m.y provide us with new opportunities to prevent the dreadful cancer recurrence.

关键词： Cancer stem.cells(CSCs) Carcinom. Cell cycle heterogeneity Quiescence Therapy resistance Therapy tolerance Tum.r dorm.ncy

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

Evaluation of hand infections in the em.rgency departm.nt using point-of-care ultrasound

引用

World Journal of Em.rgency m.dicine 2024年第4期15卷 283-288页

作者： David ahmad Haidar David m.ntz Brandon m.Wubben Om.r Rizvi Srikar Adhikari Departm.nt of Em.rgency m.dicine Michigan MedicineAnn Arbor 48109-1382USA University of Arizona College of m.dicine Tucson 85724USA Departm.nt of Em.rgency m.dicine University of IowaIowa City 52242-1009USA Departm.nt of Surgery University of Arizona College of MedicineTucson 85724USA Departm.nt of Em.rgency m.dicine University of Arizona College of MedicineTucson 85724USA

BACKGROUND:We aim.d to evaluate the utility of point-of-care ultrasound(POCUS)in the assessm.nt of hand infections that present to the em.rgency departm.nt(ED)and its im.act on m.dical decision m.king and patient ***:We conducted a retrospective review of patients who presented to two urban academ.c EDs with clinical presentations concerning for skin and soft tissue infections(SSTI)of the hand between Decem.er 2015 and Decem.er *** trained POCUS fellowship physicians reviewed an ED POCUS database for POCUS exam.nations of the *** then reviewed patients’electronic health records(EHR)for dem.graphic characteristics,history,physical exam.nation findings,ED course,additional im.ging studies,consultations,im.act of POCUS on patient care and final ***:We included a total of 50 cases(28 m.le,22 fem.le)in the final *** m.st com.on presenting sym.tom. and exam.findings were pain(100%),swelling(90%),and erythem.(74%).The m.st com.on sonographic findings were edem.(76%),soft tissue swelling(78%),and fluid surrounding the tendon(57%).POCUS was used in m.dical decision m.king 68%of the tim.(n=34),with the use of POCUS leading to changes in m.nagem.nt 38%of the tim.(n=19).POCUS use led to early antibiotic use(11/19),early consultation(10/19),and led to the perform.nce of a required procedure(8/19).The POCUS diagnosis was consistent with the discharge diagnosis of flexor tenosynovitis 8/12 tim.s,abscess 12/16 tim.s,and cellulitis 14/20 ***:POCUS is beneficial for evaluating of hand infections that present to the ED and can be used as an im.ortant part of m.dical decision m.king to expedite patient care.

关键词： Ultrasound Point-of-care ultrasound Cellulitis Abscess Flexor tenosynovitis

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：