检索结果-南通市图书馆

Adaptive Momentum-Backpropagation Algorithm for Flood Prediction and Management in the Internet of Things

Computers, Materials & Continua 2023年第10期77卷 1053-1079页

作者： Jayaraj Thankappan Delphin Raj Kesari Mary Dong Jin yoon soo-Hyun Park Department of Computer Science Muslim Arts CollegeManonmaniam Sundaranar UniversityThiruvitancodeTamil Nadu629174India Laboratory Special Communication&Convergence Service Research Center Kookmin UniversitySeoul02707Korea Development and Operation Support of Polar Research Equipment Korea Polar Research Institute(KOPRI)Incheon21990Korea Department of Financial Information Security Kookmin UniversitySeoul02707Korea

Flooding is a hazardous natural calamity that causes significant damage to lives and infrastructure in the real ***,timely and accurate decision-making is essential for mitigating flood-related *** traditional flood prediction techniques often encounter challenges in accuracy,timeliness,complexity in handling dynamic flood patterns and leading to substandard flood management *** address these challenges,there is a need for advanced machine learning models that can effectively analyze Internet of Things(IoT)-generated flood data and provide timely and accurate flood *** paper proposes a novel approach-the Adaptive Momentum and Backpropagation(AM-BP)algorithm-for flood prediction and management in IoT *** AM-BP model combines the advantages of an adaptive momentum technique with the backpropagation algorithm to enhance flood prediction accuracy and ***-world flood data is used for validation,demonstrating the superior performance of the AM-BP algorithm compared to traditional *** addition,multilayer high-end computing architecture(MLCA)is used to handle weather data such as rainfall,river water level,soil moisture,*** AM-BP’s real-time abilities enable proactive flood management,facilitating timely responses and effective disaster ***,the AM-BP algorithm can analyze large and complex datasets,integrating environmental and climatic factors for more accurate flood *** evaluation result shows that the AM-BP algorithm outperforms traditional approaches with an accuracy rate of 96%,96.4%F1-Measure,97%Precision,and 95.9%*** proposed AM-BP model presents a promising solution for flood prediction and management in IoT networks,contributing to more resilient and efficient flood control strategies,and ensuring the safety and well-being of communities at risk of flooding.

关键词： Internet of Things flood prediction artificial neural network adaptive momentum backpropagation optimization disaster management

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

Fabrication of Near Net Shape Metallic Foam via Plaster Mould

引用

Journal of Materials Science & Technology 2008年第3期24卷 335-339页

作者： young-Hwan Song Hwan-Goo Seon soo-Han Parka Min-Jae Jeong Bo-young Hur i-Cube Center School of Nano and Advanced Materials EngineeringGyeongsang National University ERIC School of Nano and Advanced Materials EngineeringGyeongsang National University

Fabrication characteristics are unstable in direct foaming method. Therefore, most of near net-shape metallic foams are produced, and investigated by powder metallurgy. Direct foaming method, however, has many benefits （i.e. reduce the unit cost of goods and fabrication process etc.） to fabrication of metallic foams. In this article, the fabrication characteristic of near net-shape metallic foams by direct foaming method was evaluated. Al and Plaster was used for base material and mould material respectively. Ca and TiH2 were added to molten Al as thickening and blowing agent for stable condition of bubbles. Thickening time was about 10 min with a stirring speed of 600 r/min. Foaming time was 30-120 s for evaluation of the optimum foaming condition. Amount of agent was selected by pre-experimental data. Porosity of near net-shape goods was measured by Archimedes method. On the other hand, it seems that increasing poring time and thickening agent make the poor porosity

关键词： Metal foam Near net shape foam Porosity

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

Unknown Attack Detection:Combining Relabeling and Hybrid Intrusion Detection

引用

Computers, Materials & Continua 2021年第9期68卷 3289-3303页

作者： Gun-yoon Shin Dong-Wook Kim Sang-soo Kim Myung-Mook Han Department of Computer Engineering Gachon UniversitySungnam-si13120Korea Agency for Defense Development Songpa Seoul05661Korea Department of Software Gachon UniversitySungnam-si13120Korea

Detection of unknown attacks like a zero-day attack is a research field that has long been ***,advances in Machine Learning(ML)and Artificial Intelligence(AI)have led to the emergence of many kinds of attack-generation tools developed using these technologies to evade detection *** detection and misuse detection are the most commonly used techniques for detecting intrusion by unknown *** anomaly detection is adequate for detecting unknown attacks,its disadvantage is the possibility of high false *** detection has low false alarms;its limitation is that it can detect only known *** overcome such limitations,many researchers have proposed a hybrid intrusion detection that integrates these two detection *** method can overcome the limitations of conventional methods and works better in detecting unknown ***,this method does not accurately classify attacks like similar to normal or known ***,we proposed a hybrid intrusion detection to detect unknown attacks similar to normal and known *** anomaly detection,the model was designed to perform normal detection using Fuzzy c-means(FCM)and identify attacks hidden in normal predicted data using *** misuse detection,the model was designed to detect previously known attacks using Classification and Regression Trees(CART)and apply Isolation Forest(iForest)to classify unknown attacks hidden in known *** an experiment result,the application of relabeling improved attack detection accuracy in anomaly detection by approximately 11%and enhanced the performance of unknown attack detection in misuse detection by approximately 10%.

关键词： Unknown attack hybrid intrusion detection fuzzy c-means relabeling CART iForest

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

Dynamic deformation behavior and microstructural evolution during high-speed rolling of Mg alloy having non-basal texture

引用

Journal of Materials Science & Technology 2019年第4期35卷 473-482页

作者： Sang-Hoon Kim Jeong Hun Lee Chong soo Lee Jonghun yoon Sung Hyuk Park School of Materials Science and Engineering Kyungpook National University Ulsan Regional Division Korea Institute of Industrial Technology Graduate Institute of Ferrous Technology Pohang University of Science and Technology Department of Mechanical Engineering Hanyang University

The dynamic deformation behaviors and resultant microstructural variations during high-speed rolling(HSR) of a Mg alloy with a non-basal texture are investigated. To this end, AZ31 alloy samples in which the basal poles of most grains are predominantly aligned parallel to the transverse direction(TD) are subjected to hot rolling with different reductions at a rolling speed of 470 m/min. The initial grains with a TD texture are favorable for {10–12} twinning under compression along the normal direction(ND); as a result, {10–12} twins are extensively formed in the material during HSR, and this consequently results in a drastic evolution of texture from the TD texture to the ND texture and a reduction in the grain size. After the initial grains are completely twinned by the {10–12} twinning mechanism, {10–11} contraction twins and {10–11}-{10–12} double twins are formed in the {10–12} twinned grains by further *** the contraction twins and double twins have crystallographic orientations that are favorable for basal slip during HSR, dislocations easily accumulate in these twins and fine recrystallized grains nucleate in the twins to reduce the increased internal strain energy. Until a rolling reduction of 20%, {10–12}twinning is the main mechanism governing the microstructural change during HSR, and subsequently,the microstructural evolution is dominated by the formation of contraction twins and double twins and the dynamic recrystallization in these twins. With an increase in the rolling reduction, the average grain size and internal strain energy of the high-speed-rolled(HSRed) samples decrease and the basal texture evolves from the TD texture to the ND texture more effectively. As a result, the 80% HSRed sample, which is subjected to a large strain at a high strain rate in a single rolling pass, exhibits a fully recrystallized microstructure consisting of equiaxed fine grains and has an ND basal texture without a TD texture component.

关键词： Magnesium alloy High-speed rolling Texture Dynamic recrystallization Twinning

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

Reconstruction of Rabbit Corneal Layer Composed of Corneal Fibroblasts and Corneal Epithelium on the Lyophilized Amniotic Membrane

引用

Chemical Research in Chinese Universities 2006年第2期22卷 150-156页

作者： AHN Jae-il JANG In-keun yoon Mun-young SEO young-kwon yoon Hee-hun KIN Jae-chan SONG Kye-yong YANG Eun-kyung PARK Jung-keug Department of Chemical and Biochemical Engineering Dongguk University Seoul Korea Department of Ophthalmology Chung-Ang University Hospital Seoul Korea Department of Pathology College of Medicine Chung-Ang University Seoul Korea R & D Center Bioland Ltd. Chun-An Korea

Many researchers have employed the cryopreserved amniotic membrane（CAM） and corneal epithelial cells in the treatment of a severely damaged burned cornea, with corneal epithelial cells cultured on an amniotic membrane （AM）. The lyophilized amniotic membrane（LAM） has a higher graft take and a longer shelf life; it is easier to store and safer because of gamma irradiation. Two Teflon rings（ Ahn＇s supporter） were made for culturing the cells on the LAM, and were then used to support the LAM. To reconstruct a corneal layer composed of corneal fibroblasts and epithelium, the corneal fibroblasts were first cultivated on the stromal side of LAM for five days, foUowed by epithelial cells culture on the epithelial side, by using the air-liquid interface culture. The reconstructed corneal layer composed of corneal fibroblasts and corneal epithelial cells has a much healthier basal layer of corneal epithelium than the reconstructed corneal epithelium, which was got by using only corneal epithelial cells, and resembles the epithelium of normal corneas, without the horny layer. Thus, the reconstruction of the corneal layer by using a LAM is considered to be a good in vitro model, not only for its application in toxicological test kits, but also for transplantation in patients with a severely damaged cornea.

关键词： Lyophilized amniotic membrane Corneal layer Corneal fibroblast Corneal epithelium

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

Diagnostic accuracy of administrative database for bile duct cancer by ICD-10 code in a tertiary institute in Korea

引用

Hepatobiliary & Pancreatic Diseases International 2020年第6期19卷 575-580页

作者： young-Jae Hwang Seon Mee Park soomin Ahn Jongchan Lee young soo Park Nayoung Kim Department of Internal Medicine Seoul National University Bundang HospitalSeongnamKorea Department of Internal Medicine Chungbuk National University College of Medicine and Medical Research InstituteCheongjuKorea Department of Pathology Seoul National University Bundang HospitalSeoungnamKorea Department of Internal Medicine and Institute of Liver Research Seoul National University College of MedicineSeoulKorea Tumor Microenvironment Global Core Research Center Seoul National UniversitySeoulKorea

Background:Administrative database provides valuable information for large cohort studies,especially when tissue diagnosis is rather difficult such as the diagnosis for bile duct cancer(BDC).The aim of this study was to evaluate the diagnostic accuracy of administrative database for BDC by International Classification of Diseases(ICD)-10 codes in a tertiary ***:BDC and control groups were collected from 2003 to 2016 at Seoul National University Bundang *** of BDC were identified in the National Health Insurance Service(NHIS)database by ICD 10-code supported by V *** control group was selected from cases without ICD-10 codes for BDC.A definite or possible diagnosis was defined according to pathologic *** records,images,and pathology reports were analyzed to evaluate ICD-10 codes for ***,specificity,positive predictive value,and negative predictive value for BDC were analyzed according to diagnostic criteria and cancer ***:A total of 1707 patients with BDC and 1707 controls were *** those with BDC,1320(77.3%)were diagnosed by definite ***(99.4%)of them had *** of definite diagnosis was the highest for ampulla of Vater(88.9%),followed by that for extrahepatic(84.9%)and intrahepatic(68.3%)*** positive cases commonly had hepatocellular *** overall diagnosis of BDC,sensitivity,specificity,positive predictive value,and negative predictive value were 99.94%,98.33%,98.30%,and 99.94%,*** accuracies were similar regardless of diagnostic criteria or tumor ***:Administrative database for BDC collected according to ICD-10 code with V code shows good accuracy.

关键词： National Health Insurance Service Bile duct cancer ICD-10

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

Undetected traumatic cardiac herniation like playing hide-and-seek-delayed incidental findings during surgical stabilization of flail chest:A case report

引用

World Journal of Clinical Cases 2022年第36期10卷 13396-13401页

作者： Su young yoon Jin-Bong Ye Junepill Seok Department of Thoracic and Cardiovascular Surgery Chungbuk National University HospitalCheongju 28644South Korea Department of Trauma Surgery Chungbuk National University HospitalCheongju 28644South Korea

BACKGROUND Post-traumatic blunt pericardial injury is a rare condition with only a few reported cases which were generally diagnosed during initial examinations upon ***,pericardial injuries not bad enough to dislocate the heart may only cause intermittent electrocardiogram(ECG)changes or be *** SUMMARY In this case,we report a blunt pericardial injury undetected on preoperative transthoracic echocardiography and chest computed *** misjudged intermittent ECG changes and blood pressure fluctuations as minor symptoms resulting from cardiac contusion and did not provide intensive *** pericardial injury was found incidentally during surgical stabilization of rib fractures and was successfully *** Post-traumatic blunt pericardial ruptures should be considered in patients with blunt chest trauma showing abnormal vital signs and ECG changes.

关键词： Cardiac herniation Flail chest Multiple rib fractures Pericardial rupture Surgical stabilization of rib fractures Case report

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

The overview of industrial diamond in Korea

引用

金刚石与磨料磨具工程 2008年第S1期28卷 21-22页

作者： Lee yoon-young President & CEO ILJIN Diamond Co. Ltd.

Introduction Industrial tools using diamonds were first introduced in the Korean market about thirty years *** the beginning,diamond tools were primarily used in industries dealing with stone ***,however, they are foc... 详细信息

关键词： The overview of industrial diamond in Korea high than PCBN

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 of a variable rate applicator for uniform fertilizer spreading

引用

International Journal of Agricultural and Biological Engineering 2019年第2期12卷 82-89页

作者： Cheol-woo Han Sang-yoon Lee young-ki Hong Gi-young Kweon Department of Bio-Industrial Machinery Engineering(Institute of Agriculture and Life Science) Gyeongsang National UniversityJinju 52828Korea Department of Agriculture Engineering National Academy of Agricultural ScienceRDAJeonju 54875Korea

Environmental impact and economic concerns have driven a variable rate technology(VRT).Spinner spreaders were mainly used for granular fertilizer application since they are simple in design,inexpensive,and can cover large ***,the spreader was not adequate for VRT because uniformity changes drastically while varying application ***,the purpose of this study was to develop a variable rate applicator with uniform spreading patterns.A commercial spreader was modified with a controller and electric actuators for controlling fertilizer discharge directions and *** was established to determine the optimum discharge direction according to the fertilizer application *** uniformity of spreading patterns in accordance with the spread amount per set unit area was evaluated by the statistical coefficient of variation(CV)lower than 15%is assumed to prevent damage to the *** results showed that CVs were 8%,9%,and 8%,respectively,for a tractor in race track mode(adjacent passes in same direction of travel)at 200 kg/hm^(2),300 kg/hm^(2),and 400 kg/hm^(2).This indicates that the fertilizer was spread uniformly,while the coefficient of variation was 12%at 200 kg/hm^(2) in back and forth mode(adjacent passes in the opposite direction of travel).Overall,the results suggest that the race track mode is suitable for operation of a tractor to ensure uniform spreading of fertilizer when applying at variable *** future goal is to establish a system for automatic variable rate application according to location in connection with soil analysis and geographic information systems.

关键词： variable rate technology fertilizer application uniform spreading spinner granular applicator fertilizer amount control

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

Eradication rate and histological changes after Helicobacter pylori eradication treatment in gastric cancer patients following subtotal gastrectomy

引用

World Journal of Gastroenterology 2015年第13期21卷 3936-3943页

作者： Jae Jin Hwang Dong Ho Lee Kyu Keun Kang Ae-Ra Lee Hyuk yoon Cheol Min Shin young soo Park Nayoung Kim Department of Internal Medicine Seoul National University Bundang HospitalSeongnamGyeonggi-do 463-707South Korea

AIM: To investigate the eradication rate and histological changes after Helicobacter pylori(H. pylori) eradication treatment following subtotal gastrectomy for gastric ***: A total of 610 patients with H. pylori infection who had undergone surgery for either early or advanced gastric adenocarcinoma between May 2004 and December 2010 were retrospectively studied. A total of 584 patients with proven H. pylori infection after surgery for gastric cancer were enrolled in this study. Patients received a seven day standard triple regimen as first-line therapy and a 10 d bismuthcontaining quadruple regimen as second-line therapy in cases of eradication failure. The patients underwent an esophagogastroduodenoscopy(EGD) between six and 12 mo after surgery, followed by annual EGDs. A further EGD was conducted 12 mo after confirming the result of the eradication and the histological changes. A gastric biopsy specimen for histological examination and Campylobacter-like organism testing was obtained from the lesser and greater curvature of the corpus of the remnant stomach. Histological changes in the gastric mucosa were assessed using the updated Sydney system before eradication therapy and at follow-up after 12 ***: Eradication rates with the first-line and second-line therapies were 78.4%(458/584) and 90%(36/40), respectively, by intention-to-treat analysis and 85.3%(458/530) and 92.3%(36/39), respectively, by per-protocol analysis. The univariate and multivariate analyses revealed that Billroth Ⅱ surgery was an independent factor predictive of eradication success in the eradication success group(OR = 1.53, 95%CI: 1.41-1.65, P = 0.021). The atrophy and intestinal metaplasia(IM) scores 12 mo after eradication were significantly lower in the eradication success group than in the eradication failure group(0.25 ± 0.04 vs 0.47 ± 0.12, P = 0.023; 0.27 ± 0.04 vs 0.51 ± 0.12, P = 0.015, respectively). The atrophy and IM scores 12 mo after successful eradication were

关键词： Helicobacter pylori Eradication Atrophy Intestinal

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：