检索结果-南通市图书馆

Machine learning predicts unpredicted deaths with high accuracy following hepatopancreatic surgery

Hepatobiliary Surgery and Nutrition 2021年第1期10卷 20-30,I0001,I0002页

作者： Kota Sahara Anghela Z.Paredes Diamantis I.Tsilimigras Kazunari Sasaki amika moro JMadison Hyer Rittal Mehta Syeda A.Farooq Lu Wu Itaru Endo Timothy M.Pawlik Division of Surgical Oncology The Ohio State University Wexner Medical Center and James Comprehensive Cancer CenterColumbusOHUSA Gastroenterological Surgery Division Yokohama City University School of MedicineYokohamaJapan Department of General Surgery Digestive Disease and Surgery InstituteCleveland ClinicClevelandOHUSA

Background:Machine learning to predict morbidity and mortality-especially in a population traditionally considered low risk-has not been previously *** sought to characterize the incidence of death among patients with a low estimated morbidity and mortality risk based on the National Surgical Quality Improvement Program(NSQIP)estimated probability(EP),as well as develop a machine learning model to identify individuals at risk for“unpredicted death”(UD)among patients undergoing hepatopancreatic(HP)***:The NSQIP database was used to identify patients who underwent elective HP surgery between *** risk of morbidity and mortality was stratified into three tiers(low,intermediate,or high estimated)using a k-means clustering method with bin sorting.A machine learning classification tree and multivariable regression analyses were used to predict 30-day mortality with a 10-fold cross validation.C statistics were used to compare model ***:Among 63,507 patients who underwent an HP procedure,median patient age was 63(IQR:54-71)*** underwent either pancreatectomy(n=38,209,60.2%)or hepatic resection(n=25,298,39.8%).Patients were stratified into three tiers of predicted morbidity and mortality risk based on the NSQIP EP:low(n=36,923,58.1%),intermediate(n=23,609,37.2%)and high risk(n=2,975,4.7%).Among 36,923 patients with low estimated risk of morbidity and mortality,237 patients(0.6%)experienced a *** to the classification tree analysis,age was the most important factor to predict UD(importance 16.9)followed by preoperative albumin level(importance:10.8),disseminated cancer(importance:6.5),preoperative platelet count(importance:6.5),and sex(importance 5.9).Among patients deemed to be low risk,the c-statistic for the machine learning derived prediction model was 0.807 compared with an AUC of only 0.662 for the NSQIP ***:A prognostic model derived using machine learning methodology performed better than t

关键词： Mortality unpredicted machine learning National Surgical Quality Improvement Program(NSQIP)

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

Design of Differential Multi-Point Feeding Dual-Polarized SISL Antenna Based on CM Analysis

引用

Chinese Journal of Electronics 2024年第5期33卷 1245-1252页

作者： Bin TANG Kaixue MA Eric Newton moro Yu LUO Tianjin Key Laboratory of Imaging and Sensing Microelectronics Technology School of MicroelectronicsTianjin University

Dual-polarized antennas are required in the current mobile communication to increase the channel capacity and reducing multi-path effects. Utilizing characteristic mode(CM) analysis, this paper presents a five-patch substrate integrated suspended line(SISL) antenna with suppressed unwanted higher-order modes, and achieves an enhanced bandwidth by using differential multi-point feeding(MPF) systems. Compared to single-point feeding systems, the proposed dual-polarized SISL antenna with the MPF system demonstrates a bandwidth 1.87 times wider. The novel SISL feeding system incorporates two pairs of differentially-fed branch line feed structures. A prototype of the proposed differential-fed antenna is fabricated and measured, showing good agreement between simulated and measured results. The dual-polarization SISL antenna can achieve realized gain from 8.1 dBi to 10.8 dBi within a working frequency from 3.17 GHz to 3.61 GHz(12.98%). Moreover, utilizing low-cost substrates, the proposed SISL antenna has the potential for 5G applications.

关键词： Dual polarized Characteristic mode analysis Feeding system Broadband 5G Substrate integrated suspended line antenna Bandwidth enhanced Suppressed higher-order modes Characteristic mode analysis Feeding system Broadband 5G Substrate integrated suspended line antenna Bandwidth enhanced Suppressed higher-order modes MICROSTRIP PATCH ANTENNA LEAKY-WAVE ANTENNA LOW-PROFILE BANDWIDTH ENHANCEMENT ORDER MODES RADIATION REDUCTION OPERATION TM10

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Cavity effect on Rayleigh wave dispersion and P-wave refraction

引用

Earthquake Engineering and Engineering Vibration 2021年第1期20卷 79-88页

作者： Hossein Rahnema Sohrab Mirassi Giancarlo Dal moro Department of Civil and Environmental Engineering Shiraz University of TechnologyShirazIran Department of Civil Engineering Shahrekord BranchIslamic Azad UniversityShahrekordIran Institute of Rock Structure and Mechanics Academy of Sciences of the Czech RepublicPragueCzech Republic

Sinkholes and cavities can represent serious hazards to human safety and urban infrastructures,cause roadbed subsidence,and so *** is therefore essential to evaluate various sinkholes in different depths and sizes to assess the risk of *** paper evaluates the effect of different cavities on Rayleigh-wave propagation and body(P)wave ***(R)wave propagation is analyzed according to the classical multi-channel analysis of surface waves(MASW)method also considering the R-wave *** seismic traces are computed by means of finite element modeling(FEM)for cavity and intrusion at different depths and ***,field acquisition data is used to verify the detection effect of a cavity on R-and *** results show that the presence of backscattered R-waves and the changes in the R-wave velocity spectrum can help in cavity *** possible evidence is represented by significant changes in the refraction travel times over the cavity *** can be concluded that the field data are in good agreement with the synthetic,and it could be effective to consider the results of both R-and P-wave analysis in order to efficiently identify the cavities.

关键词： R-wave velocity spectrum P-wave refraction cavity intrusion backscattered waves finite element modeling(FEM) MASW method

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

Rethinking to riluzole mechanism of action: the molecular link among protein kinase CK1δ activity, TDP-43 phosphorylation, and amyotrophic lateral sclerosis pharmacological treatment

引用

Neural Regeneration Research 2019年第12期14卷 2083-2085页

作者： Maicol Bissaro Stefano moro Molecular Modeling Section (MMS) Department of Pharmaceutical and Pharmacological Sciences University of Padova

Life expectancy in industrialized and developed countries will continue to increase in the near future. Consequently, over the last years, the incidence and social impact of neurodegenerative diseases have increased, highlighting an urgent need for new and more effective therapeutic strategies to counter these terrible disorders. While we tend to think about neurodegenerative diseases as conditions that are uniquely associated with the elder age, these diseases cover a diverse range across the entire lifespan, even affecting infants and children.

关键词： riluzole mechanism Life future

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

Toxic effects of selenium on marine fish

引用

Journal of Environmental Sciences 1996年第2期8卷 151-156页

作者： Zhang Yuanxun R. moro G. Gialanella Shanghai Institute of Nuclear Research Chinese Academy of sciences Shanghai 201800 China University of Napoli Italy

This paper deals with the toxic effects of selenium uptakes in the tissues of marine fish. The selenium concentration in skin, liver, muscle and gill of the fish were determined by proton induce X-ray emission (PIXE). The enzyme levels in liver tissues also were measured and evaluated . The results are shown that 50% lethal dose was LD50= 0. 29μg/g and it was found independent on the injected doses. The enzymes in serviving fish showed a gradual and complete recovery during the observation period. A very low Se uptake in muscle was found. The biological half lives of Se concentration in liver and gill were nearly identical, while the skin exhibited a half life 2. 5 times greater.

关键词： toxic level enzyme activity nuclear analysis.

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

Prevalence of Refractive Errors among School Children Aged 5 to 15 Years Old at CHU-IOTA

引用

Surgical Science 2024年第8期15卷 480-491页

作者： Kadiatou Ba Aichata Tall Mory Coulibaly Cheick Sogodogo Zoumana Bagayogo Aoua Ibrahim Toure Ousmane Toure Brainima Coulibaly Fatoumata Tata Sidibe Aly Konipo Roucky Sangare Seydou Diallo moro Sidibe Oumar Diallo Assiatou Simaga Gounon Saye Modibo Sissoko Mamadou Kole Sidibe Sidi Diarra Nouhoum Guirou Abdoulaye Napo Adama Guindo University Hospital Center Institute of Tropical Ophthalmology of Africa (CHU-IOTA) Bamako Bamako Mali Ophthalmology Department Sikasso Regional Hospital Sikasso Mali Ophthalmology Department Luxembourg Mother-Child Hospital in Bamako Bamako Mali

Introduction: Undetected refractive errors constitute a health problem among school children who cannot take advantage of educational opportunities. The authors studied the prevalence of refractive errors in school children aged 5 to 15 at CHU-IOTA. Patients and Method: This is a prospective, descriptive cross-sectional study carried out in the ophthalmic-pediatrics department of CHU-IOTA, from October to November 2023. Results: We received 340 school children aged 5 to 15, among whom 111 presented ametropia, i.e. a prevalence of 32.65%. The average age was 11.42 ± 2.75 years and a sex ratio of 0.59. The average visual acuity was 4/10 (range 1/10 and 10/10). We found refractive defects: astigmatism 73.87%, hyperopia 23.87% of cases and myopia 2.25%. The decline in distance visual acuity was the most common functional sign. Ocular abnormalities associated with ametropia were dominated by allergic conjunctivitis (26.13%) and papillary excavation (6.31%) in astigmatics;allergic conjunctivitis (9.01%) and papillary excavation (7.20%) in hyperopic patients;turbid vitreous (0.90%), myopic choroidosis (0.45%) and allergic conjunctivitis (0.45%) in myopes. Conclusion: Refractive errors constitute a reality and a major public health problem among school children.

关键词： Refractive Errors Prevalence Child CHU-IOTA

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

Prevalence of Ocular Trauma at the Reference Health Center (CSREF) of Kati

引用

Surgical Science 2024年第5期15卷 371-380页

作者： Kadiatou Ba Aichata Tall Brainima Coulibaly Sadio Cissoko Bakary Danfaga moro Sidibe Seydou Diallo Oumar Diallo Fatoumata Tata Sidibe Aly Konipo Mory Coulibaly Ousmane Touré Aoua I. Touré Cheick Sogodogo Ibrahim Bamenta Gounon Saye Modibo Sissoko Mamadou Kole Sidibe Sidi Diarra Nouhoum Guirou Lamine Traoré University Hospital Center Institute of Tropical Ophthalmology of Africa Bamako Bamako Mali Ophthalmology Department Kati Reference Health Center Koulikoro Mali Ophthalmology Department Sikasso Regional Hospital Sikasso Mali Ophthalmology Department Luxembourg Mother-Child Hospital in Bamako Bamako Mali Ophthalmology Department Somin&#233 Dolo Mopti Regional Hospital in Mopti Mopti Mali National Eye Health Program Bamako Mali

Introduction: The authors wanted to study the prevalence of ocular trauma in the ophthalmology unit of the CSREF of Kati. Patients and method: This is a retrospective study, covering the period from January to December 2015, carried out in the ophthalmology unit of the CSREF in Kati. Results: The sample consisted of 568 patients, or 6.82% of ophthalmological consultations. Children aged 0 to 14 years accounted for 154 (27.11%) of the trauma cases. Bruises constitute the main circumstance (58.1%) of eye trauma, followed by domestic accidents (15.6%). Closed globe ocular trauma was the main type of trauma (61.6%), followed by ocular adnexal trauma (30.1%) and open globe trauma (8.3%) in which the penetrating wound was the lesion, the least common (2.6%) but the most serious. Medical treatment was the most used therapeutic modality in 82.4% of cases, followed by surgery with 17.6% of cases. The evolution of the lesions after treatment was favorable in 85.6% of cases and unfavorable in 14.4% of cases. Complications were observed in 5.8% of cases and sequelae in 8.6% of cases. Conclusion: Ocular trauma constitutes an important reason for ophthalmological consultation at the CSREF of Kati. The severity of some of these lesions requires frequent recourse to surgery. The complexity of the treatment should encourage us to favor preventive measures.

关键词： Eye Trauma Prevalence CSREF Kati

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

Performance of Geometric Multigrid Method for Two-Dimensional Burgers’Equations with Non-Orthogonal,Structured Curvilinear Grids

引用

Computer Modeling in Engineering & Sciences 2020年第12期125卷 1061-1081页

作者： Daiane Cristina Zanatta Luciano Kiyoshi Araki Marcio Augusto Villela Pinto Diego Fernando moro State University of Centro-Oeste IratiBrazil Federal University of Parana Department of Mechanical EngineeringCuritibaBrazil Positivo University CuritibaBrazil

This paper seeks to develop an efficient multigrid algorithm for solving the Burgers problem with the use of non-orthogonal structured curvilinear grids in L-shaped *** this,the differential equations were discretized by Finite Volume Method(FVM)with second-order approximation scheme and deferred ***,the algebraic method and the differential method were used to generate the non-orthogonal structured curvilinear ***,the influence of some parameters of geometric multigrid method,as well as lexicographical Gauss–Seidel(Lex-GS),η-line Gauss–Seidel(η-line-GS),Modified Strongly Implicit(MSI)and modified incomplete LU decomposition(MILU)solvers on the Central Processing Unit(CPU)time was ***,several parameters of multigrid method and solvers were tested for the problem,with the use of nonorthogonal structured curvilinear grids and multigrid method,resulting in an algorithm with the combination that achieved the best results and CPU *** geometric multigrid method with Full Approximation Scheme(FAS),V-cycle and standard coarsening ratio for this problem were *** article shows how to calculate the coordinates transformation metrics in the coarser *** show that the MSI and MILU solvers are the most ***,theMSI solver is faster thanMILU for both grids generators;and the solutions are more accurate for the Burgers problem with grids generated using elliptic equations.

关键词： Computational fluid dynamics finite volume method Burgers’equation geometric multigrid non-orthogonal curvilinear grids

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

Lights at night:does photobiomodulation improve sleep?

引用

Neural Regeneration Research 2023年第3期18卷 474-477页

作者： Audrey Valverde Catherine Hamilton Cécile moro Malvina Billeres Pierre Magistretti John Mitrofanis UniversitéGrenoble Alpes FDD and CEA-LETIClinatecGrenobleFrance WellRed Inc LauncestonTasmaniaAustralia King Abdullah University of Science and Technology Thuwal Saudi Arabia Institute of Ophthalmology University College LondonLondonUK

Sleep is a critical part of our daily *** impacts every organ and system of our body,from the brain to the heart and from cellular metabolism to immune function.A consistent daily schedule of quality of sleep makes a world of difference to our health and *** its importance,so many individuals have trouble sleeping *** quality sleep has such a detrimental impact on many aspects of our lives;it affects our thinking,learning,memory,and ***,and most poignantly,poor quality sleep over time increases the risk of developing a serious medical condition,including neurodegenerative *** this review,we focus on a potentially new non-pharmacological treatment that improves the quality of *** treatment,called photobiomodulation,involves the application of very specific wavelengths of light to body *** animal models,these wavelengths,when applied at night,have been reported to stimulate the removal of fluid and toxic waste-products from the brain;that is,they improve the brain’s inbuilt house-keeping *** suggest that transcranial nocturnal photobiomodulation,by improving brain function at night,will help improve the health and well-being of many individuals,by enhancing the quality of their sleep.

关键词： aquaporin 4 glymphhatic infrared non-pharmacological red sleep cap transcranial wakefulness

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

Modelling trust evolution within small business lending relationships

引用

Financial Innovation 2018年第1期4卷 274-291页

作者： Ying Tang Andrea moro Sandro Sozzo Zhiyong Li School of Finance Southwestern University of Finance and EconomicsChengduChina School of Management Cranfield UniversityBedfordUK School of Business University of LeicesterLeicesterUK.

Trust is a key dimension in the principal-agent relationship and it has been studied ***,the dynamics,evolution,and intrinsic motivation and mechanisms have received less *** paper investigates the intrinsic motivation of trust and it proposes a theoretical model of trust evolution that is based on the notion of‘trust response’and‘trust spiral’.We then specifically focus on trust within the lending relationship between banks and small businesses,and we run numerical simulations to further illustrate the evolution of involved mutual trust over *** model provides implications for future research in both trust evolution and small business lending relationships.

关键词： Trust Spiral Small business lending Reciprocity Altruism

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：