检索结果-南通市图书馆

Simply Fine-Tuned Deep Learning-Based Classification for Breast Cancer with Mammograms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第12期73卷 4677-4693页

作者： Vicky Mudeng jin-woo jeong Se-woon Choe Department of Medical IT Convergence Engineering Kumoh National Institute of TechnologyGumi39253Korea Department of Electrical Engineering Institut Teknologi KalimantanBalikpapan76127Indonesia Department of Data Science Seoul National University of Science and TechnologySeoul01811Korea Department of IT Convergence Engineering Kumoh National Institute of TechnologyGumi39253Korea

A lump growing in the breast may be referred to as a breast mass related to the ***,not all tumors are cancerous or *** masses can cause discomfort and pain,depending on the size and texture of the *** an appropriate diagnosis,non-cancerous breast masses can be diagnosed earlier to prevent their cultivation from being *** the development of the artificial neural network,the deep discriminative model,such as a convolutional neural network,may evaluate the breast lesion to distinguish benign and malignant cancers frommammogram breast masses *** work accomplished breastmasses classification relative to benign and malignant cancers using a digital database for screening mammography image datasets.A residual neural network 50(ResNet50)model along with an adaptive gradient algorithm,adaptive moment estimation,and stochastic gradient descent optimizers,as well as data augmentations and fine-tuning methods,were *** addition,a learning rate scheduler and 5-fold cross-validation were applied with 60 training procedures to determine the best *** results of training accuracy,p-value,test accuracy,area under the curve,sensitivity,precision,F1-score,specificity,and kappa for adaptive gradient algorithm 25%,75%,100%,and stochastic gradient descent 100%fine-tunings indicate that the classifier is feasible for categorizing breast cancer into benign and malignant from the mammographic breast masses images.

关键词： Medical image analysis convolutional neural network mammogram breast masses breast cancer

Automatic Examination of Condition of Used Books with YOLO-Based Object Detection Framework

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Systems Science & Engineering 2023年第11期47卷 1611-1632页

作者： Sumin Hong jin-woo jeong Department of Industrial Engineering Seoul National University of Science and TechnologySeoul01811Korea Department of Data Science Seoul National University of Science and TechnologySeoul01811Korea

As the demand for used books has grown in recent years,various online/offline market platforms have emerged to support the trade in used *** price of used books can depend on various factors,such as the state of preservation(i.e.,condition),the value of possession,and so ***,some online platforms provide a reference document to evaluate the condition of used books,but it is still not trivial for individual sellers to determine the *** lack of a standard quantitative method to assess the condition of the used book would confuse both sellers and consumers,thereby decreasing the user experience of the online secondhand ***,this paper discusses the automatic examination of the condition of used books based on deep learning *** this work,we present a book damage detection system based on various You Only Look Once(YOLO)object detection *** YOLOv5,YOLOR,and YOLOX,we also introduce various training configurations that can be applied to improve ***,a combination of different augmentation strategies including flip,rotation,crop,mosaic,and mixup was used for *** train and validate our system,a book damage dataset composed of a total of 620 book images with 3,989 annotations,containing six types of damages(i.e.,Wear,Spot,Notch,Barcode,Tag,and Ripped),collected from the library books is *** evaluated each model trained with different configurations to figure out their detection accuracy as well as training *** experimental results showed that YOLOX trained with its best training configuration yielded the best performance in terms of detection accuracy,by achieving 60.0%(mAP@.5:.95)and 72.9%(mAP@.5)for book damage ***,YOLOX performed worst in terms of training efficiency,indicating that there is a trade-off between accuracy and *** on the findings from the study,we discuss the feasibility and limitations of our system and future research directi

关键词： Deep learning object detection damage detection book damage

Effects of upper lid blepharoplasty on visual quality in patients with lash ptosis and dermatochalasis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2016年第9期9卷 1320-1324页

作者： Scoung Hyun An Sang wook jin Yoon Hyung Kwon Won Yeol Ryu woo jin jeong Hee Bae Ahn Department of Ophthalmology Dong-A University College of Medicine Busan 602-715 Korea

AIM：To assess the effects of upper lid blepharoplasty on visual ***：Seventy-three eyelids of 39 patients were subjected to upper lid ***- and postoperative contrast sensitivity,visual acuity,vertical palpebral aperture and the degree of lash ptosis were ***：The mean log contrast sensitivities under photopic（P =0.017） and scotopic conditions（P =0.009）were improved after surgery,and these differences were *** degree of lash ptosis was also decreased after blepharoplasty（P〈0.001）.CONCLUSION：In our study,a significant increase in contrast sensitivity was found after *** results suggest that upper lid blepharoplasty can be helpful for improving visual quality.

关键词： blepharoplasty visual quality contrast sensitivity

Ethanol extract of Kalopanax septemlobus leaf inhibits HepG2 human hepatocellular carcinoma cell proliferation via inducing cell cycle arrest at G_1 phase

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2016年第4期9卷 336-342页

作者： Cheol Park Ji-Suk jeong jin-woo jeong Sung Ok Kim Yong-Joo Kim Gi-Young Kim Su-Hyun Hong Yung Hyun Choi Department of Molecular Biology College of Natural Sciences and Human EcologyDongeui University Department of Research and Development of Resources Gurye-gun Agricultural Center Wild Flower Institute.Gurye-gun Anti-Aging Research Center.Dongeui University Department of Food Science & Biotechnology College of EngineeringKyungsung University Republic of Korea Laboratory of Immunobiology.Department of Marine Life.Sciences.Jeju National University Department of Biochemistry.Dongeui University

Objective:To investigate the effects of an ethanol extract of Kalopanax septemlobus(Thunb.)***(EEKS) on cell proliferation in human hepatocellular carcinoma cells and its mechanisms of ***:Cells were treated with EEKS and subsequently analyzed for cell proliferation and flow cytometry *** of cell cycle regulators were determined by reverse transcriptase polymerase chain reaction analysis and Western blotting,and activation of eyclin-associaled kinases studied using kinase ***:The EEKS suppressed cell proliferation in both HepG2 and Hep3 B cells,but showed a more sensitive anli-proliferative activity in HepG2 *** cytometry analysis revealed an association between the growth inhibitory effect of EEKS and with G_1 phase cell cycle arrest in HepG2 cells,along with the dephosphorylation of retinoblastoma protein(pRB) and enhanced binding of pRB with the E2 F transcription factor family *** with EEKS also increased the expression of cyclin-dependent kinase(CDK) inhibitors,such as p21WAF1/CIP1 and *** any noticeable changes in G_1 cyclins and CDKs(except for a slight decrease in CDK4).Treatment of HepG2 cells with EEKS also increased the binding of p21 and p27 with CDK4 and *** was paralleled by a marked decrease in the cyclin D- and cyclin E-associated kinase ***:Overall,our findings suggest that EEKS may be an effective treatment for liver cancer through suppression of cancer cell proliferation via G_1,cell cycle arrest Further studies arc required to identify the active compounds in EEKS.

关键词： Kalopanax septemlobus Hepatocellular carcinoma G1 cell cycle arrest CDK inhibitor pRB

Attaching single carbon nanotube on tip's apex using dielectrophoresis of DC-pulse voltage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2009年第B9期19卷 280-283页

作者： Hee-jin jeong Yoong-Ho JUNG Deug-woo LEE Gyeongbuk Hybrid Technology Institute School of Mechanical Engineering Pusan National University Department of Nanosystem and Nanoprocess Engineering Pusan National University

Single carbon nanotubes (CNTs) are candidates for a number of electronics and sensing applications, provided that single CNTs can be separated from a bundle of CNTs in suspension. Dielectrophoresis has recently been demonstrated as one route for the extraction of desired CNTs. However, previous methods using dielectrophoresis have found it difficult to extract single nanotubes from bundles of CNTs in solution. Here, we show that this restriction can be overcome by using pulsed DC voltage of an electric field, instead of regular AC and DC voltages.

关键词：碳纳米管直流脉冲脉冲电压介电顶点消息电子号码 CNTs

The Effect of Plasma Surface Treatment on a Porous Green Ceramic Film with Polymeric Binder Materials

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

Plasma Science and Technology 2013年第6期15卷 521-527页

作者： jeong woo YUN School of Applied Chemical Engineering Chonnam National University

To reduce time and energy during thermal binder removal in the ceramic process, plasma surface treatment was applied before the lamination *** adhesion strength in the lamination films was enhanced by oxidative plasma treatment of the porous green ceramic film with polymeric binding *** oxygen plasma characteristics were investigated through experimental parameters and weight loss *** experimental results revealed the need for parameter analysis,including gas material,process time,flow rate,and discharge power,and supported a mechanism consisting of competing ablation and deposition *** weight loss analysis was conducted for cyclic plasma treatment rather than continuous plasma treatment for the purpose of improving the film’s permeability by suppressing deposition of the ablated *** cyclic plasma treatment improved the permeability compared to the continuous plasma treatment.

关键词： plasma surface treatment oxidative plasma green ceramic film ablation deposition

Malignant sweat gland tumor of breast arising in pre-existing benign tumor: A case report

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

World Journal of Clinical Cases 2019年第19期7卷 3033-3038页

作者： jin Kyung An jeong Joo woo Young Ok Hong Department of Radiology Nowon Eulji Medical CenterEulji UniversitySeoul 01830South Korea Department of Pathology Nowon Eulji Medical CenterEulji UniversitySeoul 01830South Korea

BACKGROUND Sweat glands belong to skin *** gland tumors are uncommon,especially when they occur as malignant tumors in the *** report a case of malignant sweat gland tumor of the breast,including imaging and pathological *** SUMMARY A 47-year-old woman visited our hospital with a non-tender palpable lesion in her left *** lesion had not shown changes for 10 ***,it recently increased in *** showed a well circumscribed cystic lesion with internal debris and fluid-fluid *** resonance imaging showed a well circumscribed oval mass with T1 hyper-intensity compared to muscle and T2 high signal *** was a small enhancing mural component in the inner wall of the *** tumor was *** pathologic result was a malignant transformation of benign sweat gland tumor such as *** lesion was treated with excision and radiation *** 1-year follow up,there was no local recurrence or metastasis in the *** In the case of a rapid growing cystic mass in the nipple and subareola,it is necessary to distinguish it from a malignant sweat gland tumor.

关键词： Sweat gland neoplasm Breast Ultrasonography Magnetic resonance imaging

Naphthalene emissions from moth repellents or toilet deodorant blocks determined using head-space and small-chamber tests

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2008年第8期20卷 1012-1017页

作者： JO Wan-Kuen LEE Jong-Hyo LIM Ho-jin jeong woo-Sik Department of Environmental Engineering Kyungpook National UniversityDaegu 702-701Korea. School of Food and Life Science Inje University KimhaeKyungsangnarado 621-749Korea

The present study investigated the emissions of naphthalene and other compounds from several different moth repellents(MRs) and one toilet deodorant block(TDB)currently sold in Korea,using a headspace *** emission factors and emission rates of naphthalene were studied using a small-scale environmental ***-type products emitted a higher concentration of the total volatile organic compounds(VOCs)(normalized to the weight of test piece)than ball-type products,which in turn emitted higher con...

关键词： volatile organic compounds(VOCs) chemical composition ball-type gel-type paper-type

Risk of ischaemic stroke in patients with transient global amnesia: a propensity-matched cohort study

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

Stroke & Vascular Neurology 2022年第2期7卷 101-107页

作者： Sang Hun Lee Keon-Yeup Kim jeong-woo Lee So-jeong Park jin-Man Jung Department of Neurology Korea University Ansan HospitalKorea University College of MedicineAnsanRepublic of Korea Data Science Team Hanmi Pharm.Co.LtdSeoulRepublic of Korea Korea University Zebrafish Translational Medical Research Center AnsanRepublic of Korea

Background The exact pathophysiological mechanism of transient global amnesia(TGA)is *** is debatable whether TGA is a risk factor for ***,here we investigated the possibility of TGA as a risk factor for stroke in a real-world setting using large-scale nationwide health claims *** We used health claims data from the Korean National Health Insurance Service(NHIS).Patients diagnosed with TGA between 2007 and 2013 were *** initially extracted patients without TGA who were preferentially matched for age and sex with the patients with TGA at a ratio of 10:1 from the whole ***,we performed 1:2 propensity score matching analysis to balance the baseline characteristics between the two *** the propensity score-matched dataset,we performed multivariable Cox regression analysis to investigate the association between TGA and stroke type,including ischaemic,haemorrhagic and all stroke *** Patients with TGA(n=14673)were selected from the NHIS *** extracting from the whole database(n=140486)and propensity score matching their data at a 1:2 ratio,a total of 10448 and 20442 patients were finally assigned to the TGA and control groups,*** multivariable Cox regression analysis demonstrated that the TGA group had a higher risk of ischaemic stroke and all types of stroke(adjusted HR=1.194;95%CI:1.043 to 1.368;and HR=1.197;95%CI:1.056 to 1.357,respectively).Conclusions Analysis of the nationwide claims database showed that TGA could be an important risk factor for stroke,especially for ischaemic stroke.

关键词： patients matched transient