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Mining fine-grained sequential travel patterns from social geo-tagged photos

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Frontiers of Computer Science 2018年第6期12卷 1255-1257页

作者： Thanh-Hieu BUI Seong-bae PARK Institute of Research and Development Duy Tan UniversityDa Nang 550000Vietnam Department of Computer Science and Engineering Kyung Hee UniversityYongin 17104Korea

A huge amount of geo-tagged photos that contains broad knowledge about travel behaviors of human is generated and posted on social photo-sharing sites. In literature, many studies about mining travel patterns from geo-tagged social photos have been proposed. However, the existing studies lack of a comprehensive system to mine fine-grained travel patterns by utilizing extensions of sequential pattern mining. We consider the following questions for San Francisco City, CA, USA: 1) What are the popular travel routes for tourists if they have only four hours or eight hours for visiting? 2) Which POIs do international tourists prefer to visit after visiting Golden Gate Bridge? 3) Are there any differences in travel behavior between American tourists and international tourists, between male American tourists and female American tourists, between male international tourists and female international tourists? To address these questions, we define and implement a novel framework to mine fine-grained travel patterns from geo-tagged photos of a tourist destination.

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Effect of Ni Contents on the Microstructure and Mechanical Properties of Martensitic Stainless Steel Guide Roll by Centrifugal Casting

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Journal of Materials Science & Technology 2008年第3期24卷 343-346页

作者： Villando Thursdiyanto Eun-Jae bae Eung-Ryul baek School of Materials Science and Engineering Yeungnam University

A novel process based on centrifugal casting was developed to produce martensitic stainless steel for guideroll materials. Centrifugal casting provides a lower production cost and less of the thermal cracking defects which normally occur in the overlaid welding process. In this study, the effects of Ni on the microstructure and mechanical properties of martensitic stainless steel were investigated. The results show that the addition of Ni resulted in a decrease in the volume fraction of delta ferrite and an increase in the volume fraction of the retained austenite, respectively. Moreover, a tensile strength of 1600 MPa with an elongation of 4% were obtained after tempering at 500℃ for 2 h. These values were higher than those obtained by using the conventional overlaid process.

关键词： Centrifugal casting Martensitic stainless steel Delta ferrite Mechanical properties

Broadcast-Based Spatial Queries

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Journal of Computer Science & Technology 2005年第6期20卷 811-821页

作者： Kwang-Jin Park Moon-bae Song Chong-Sun Hwang Department of Computer Science and Engineering Korea University 5-1 Anam-Dong Seongbuk-Ku Seoul 136-701 Korea

Indexing techniques have been developed for wireless data broadcast environments, in order to conserve the scarce power resources of the mobile clients. However, the use of interleaved index segments in a broadcast cycle increases the average access latency for the clients. In this paper, the broadcast-based spatial query processing methods （BBS） are presented for the location-based services. In the BBS, broadcasted data objects are sorted sequentially based on their locations, and the server broadcasts the location dependent data along with an index segment. Then, a sequential prefetehing and caching scheme is designed to reduce the query response time. The performance of this scheme is investigated in relation to various environmental variables, such as the distributions of the data objects, the average speed of the clients and the size of the service area.

关键词： broadcasting location-aware caching prefetching mobile computing

Full‑Fiber Auxetic‑Interlaced Yarn Sensor for Sign‑Language Translation Glove Assisted by Artificial Neural Network

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Nano-Micro Letters 2022年第8期14卷 269-282页

作者： Ronghui Wu Sangjin Seo Liyun Ma Juyeol bae Taesung Kim Department of Mechanical Engineering Ulsan National Institute of Science and Technology(UNIST)50 UNIST‑GilUlsan 44919Republic of Korea College of Physical Science and Technology Xiamen UniversityXiamen 361005People’s Republic of China

Yarn sensors have shown promising application prospects in wearable electronics owing to their shape adaptability, good flexibility, and weavability. However, it is still a critical challenge to develop simultaneously structure stable, fast response, body conformal, mechanical robust yarn sensor using full microfibers in an industrial-scalable manner. Herein, a full-fiber auxetic-interlaced yarn sensor(AIYS) with negative Poisson’s ratio is designed and fabricated using a continuous, mass-producible, structure-programmable, and low-cost spinning technology. Based on the unique microfiber interlaced architecture, AIYS simultaneously achieves a Poisson’s ratio of-1.5, a robust mechanical property(0.6 c N/dtex), and a fast train-resistance responsiveness(0.025 s), which enhances conformality with the human body and quickly transduce human joint bending and/or stretching into electrical signals. Moreover, AIYS shows good flexibility, washability, weavability, and high repeatability. Furtherly, with the AIYS array, an ultrafast full-letter sign-language translation glove is developed using artificial neural network. The sign-language translation glove achieves an accuracy of 99.8% for all letters of the English alphabet within a short time of 0.25 s. Furthermore, owing to excellent full letter-recognition ability, real-time translation of daily dialogues and complex sentences is also demonstrated. The smart glove exhibits a remarkable potential in eliminating the communication barriers between signers and non-signers.

关键词： Negative Poisson’s ratio yarns Interlaced yarn sensors Smart glove Deep learning Sign-language translation

Sarcopenia in pancreatic cancer:Effect on patient outcomes

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World Journal of Gastrointestinal Oncology 2022年第12期14卷 2302-2312页

作者： Moon Hyung Choi Seung bae Yoon Department of Radiology Eunpyeong St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 03312South Korea Division of Gastroenterology Department of Internal MedicineCollege of MedicineThe Catholic University of KoreaSeoul 03312South Korea

Pancreatic cancer is a challenging disease with an increasing incidence and extremely poor *** clinical outcomes of pancreatic cancer depend on tumor biology,responses to treatments,and malnutrition or *** represents a severe catabolic condition defined by the age-related loss of muscle mass and strength and affects as much as 70%of malnourished pancreatic cancer *** lumbar skeletal muscle index,defined as the total abdominal muscle area at the L3 vertebral level adjusted by the square of the height,is widely used for assessing sarcopenia in patients with pancreatic *** studies have suggested that sarcopenia may be a risk factor for perioperative complications and decreased recurrence-free or overall survival in patients with pancreatic cancer undergoing *** could also intensify chemotherapyinduced toxicities and worsen the quality of life and survival in the neoadjuvant or palliative chemotherapy ***,not only at the time of diagnosis but also during treatment,decreases survival in patients with pancreatic ***,multimodal interventions may improve sarcopenia and clinical outcomes;however,no study has reported positive *** prospective studies are needed to confirm the prognostic role of sarcopenia and the effects of multimodal interventions in patients with pancreatic cancer.

关键词： Sarcopenia Pancreatic cancer Skeletal muscle Computed tomography Outcomes Survival

Management of antiviral drug resistance in chronic hepatitis B

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World Journal of Gastroenterology 2014年第33期20卷 11641-11649页

作者： Ki bae Bang Hong Joo Kim Department of Internal Medicine Sungkyunkwan University Kangbuk Samsung Hospital Seoul 110-746 South Korea

Rescue antiviral treatment for patients with resistance to preexisting nucleos(t)ide analogues remains a clinical challenge. The correct choice of a first-line treatment of high potency and with a high genetic barrier to achieve sustained long-term suppression of viral replication provides the best chance of preventing treatment failure and the emergence of drug resistance. The management of treatment failure and drug resistance requires a precise and accurate clinical and virologic monitoring. Combination treatment with antiviral drugs that belong to different groups is associated with a lower chance of developing resistance to rescue drugs. To guarantee better control of viral replication in patients with drug resistance, the addition of another drug without a cross resistance profile should be given as early as possible, preferably at the time when genotypic resistance emerges. Long-term surveillance for treatment efficacy and possible emergence of drug resistance should be continued to prevent the emergence of multidrug-resistant strains.

关键词： Chronic hepatitis B Antiviral resistance Rescue treatment Multidrug resistance Cross resistance

Helicobacter pylori infection in gastric mucosa-associated lymphoid tissue lymphoma

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World Journal of Gastroenterology 2014年第11期20卷 2751-2759页

作者： Jeong bae Park Ja Seol KooJeong Department of Internal Medicine College of MedicineDongguk UniversityGyeongju 780-350South Korea Division of Gastroenterology and Hepatology Department of Internal MedicineKorea University Ansan HospitalAnsan 425-707South Korea

Gastrointestinal lymphoma is the most common type of extranodal lymphoma,and most commonly affects the *** zone B-cell lymphoma of the mucosa-associated lymphoid tissue(MALT)and diffuse large B-cell lymphoma are the most common histologic types of gastric *** its increasing incidence,diagnosis of gastric lymphoma is difficult at an earlier stage due to its nonspecific symptoms and endoscopic findings,and,thus,a high index of suspicion,and multiple,deep,repeated biopsies at abnormally and normally appearing sites in the stomach are *** addition,testing for Helicobacter pylori(***)infection and endoscopic ultrasonography to determine the depth of tumor invasion and involvement of regional lymph nodes is essential for predicting response to *** eradication and for assessment of disease *** addition,*** infection and MALT lymphoma development are associated,and complete regression of low-grade MALT lymphomas after *** eradication has been *** and/or chemotherapy can be used in cases that show poor response to *** eradication,negativity for *** infection,or high-grade lymphoma.

关键词： Mucosa-associated lymphoid tissue Lymphoma Helicobacter pylori Eradication Remission

Clinical implications and perspectives of portal venous circulating tumor cells in pancreatic cancer

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World Journal of Gastrointestinal Oncology 2023年第4期15卷 632-643页

作者： Sung Woo Ko Seung bae Yoon Department of Internal Medicine College of MedicineThe Catholic University of KoreaSeoul 06591South Korea Department of Internal Medicine Eunpyeong St.Mary’s HospitalSeoul 03312South Korea

Despite recent improvements in the diagnosis and treatment of pancreatic cancer(PC),clinical outcomes remain ***,there are no effective prognostic or predictive biomarkers or options beyond carbohydrate antigen 19-9 for personalized and precise *** tumor cells(CTCs),as a member of the liquid biopsy family,could be a promising biomarker;however,the rarity of CTCs in peripheral venous blood limits their clinical *** the first venous drainage of PC is portal circulation,the portal vein can be a more suitable location for the detection of *** ultrasound-guided portal venous sampling of CTCs is both feasible and *** studies have suggested that the detection rate and number of CTCs may be higher in the portal blood than in the peripheral *** counts in the portal blood are highly associated with hepatic metastasis,recurrence after surgery,and *** phenotypic and genotypic properties measured in the captured portal CTCs can help us to understand tumor heterogeneity and predict the prognosis of *** sample sizes and heterogeneous CTC detection methods limit the studies to ***,a large number of prospective studies are needed to corroborate portal CTCs as a valid biomarker in PC.

关键词： Circulating tumor cell Pancreatic cancer Portal vein Outcomes Prognosis Survival

Another road leads to HIF-1 activation： implications for prostate cancer progression

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Asian Journal of Andrology 2012年第2期14卷 241-242页

作者： Yao Dai Kyungmi bae Dietmar W Siemann Department of Radiation Oncology University of Florida Shands Cancer Center Gainesville FL 32610 USA Department of Urology University of Florida Shands Cancer Center Gainesville FL 32610 USA

Hypoxia has been identified as a common environmental stress factor associated with therapeutic resistance and metastasis in human cancers. A major player in regulating the response to hypoxia is the transcriptional f... 详细信息

关键词： HIF-1 activation prostate cancer Radiation Oncology