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An Intelligent Recommendation System for Real Estate Commodity

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Computer Systems Science & Engineering 2022年第9期42卷 881-897页

作者： Tsung-Yin Ou Guan-Yu Lin Hsin-Pin Fu Shih-Chia Wei Wen-lung tsai Department of Marketing and Distribution Management National Kaohsiung University of Science and TechnologyKaohsiung824Taiwan College of Management National Kaohsiung University of Science and TechnologyKaohsiung824Taiwan Department of Information Management Asia Eastern University of Science and TechnologyNew Taipei220Taiwan

Most real estate agents develop new objects by visiting unfamiliar clients, distributing leaflets, or browsing other real estate trading website platforms,whereas consumers often rely on websites to search and compare prices when purchasing real property. In addition to being time consuming, this search processrenders it difficult for agents and consumers to understand the status changes ofobjects. In this study, Python is used to write web crawler and image recognitionprograms to capture object information from the web pages of real estate agents;perform data screening, arranging, and cleaning;compare the text of real estateobject information;as well as integrate and use the convolutional neural networkof a deep learning algorithm to implement image recognition. In this study, dataare acquired from two business-to-consumer real estate agency networks, i.e., theSinyi real estate agent and the Yungching real estate agent, and one consumer-toconsumer real estate agency platform, i.e., the, FiveNineOne real estate agent. Theresults indicate that text mining can reveal the similarities and differences betweenthe objects, list the number of days that the object has been available for sale onthe website, and provide the price fluctuations and fluctuation times during thesales period. In addition, 213,325 object amplification images are used as a database for training using deep learning algorithms, and the maximum image recognition accuracy achieved is 95%. The dynamic recommendation system for realestate objects constructed by combining text mining and image recognition systems enables developers in the real estate industry to understand the differencesbetween their commodities and other businesses in approximately 2 min, as wellas rapidly determine developable objects via comparison results provided by thesystem. Meanwhile, consumers require less time in searching and comparingprices after they have understood the commodity dynamic information, therebyallowing the

关键词： Real estate agency web crawler image comparison text mining deep learning real estate object dynamic recommendation system

Prediction of early-stage hepatocellular carcinoma using Onco Scan chromosomal copy number aberration data

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World Journal of Gastroenterology 2017年第44期23卷 7818-7829页

作者： Ming-Chin Yu Chao-Wei Lee Yun-Shien Lee Jang-Hau Lian Chia-lung tsai Yi-Ping Liu Chun-Hsing Wu Chi-Neu tsai Department of Surgery Chang Gung Memorial Hospital Department of Surgery Xiamen Chang Gung Hospital Graduate Institute of Clinical Medical Sciences Chang Gung University Genomic Medicine Core Laboratory Chang Gung Memorial Hospital Department of Biotechnology Ming-Chuan University Department of Pediatrics Chang Gung Memorial Hospital

AIM To identify chromosomal copy number aberrations(CNAs) in early-stage hepatocellular carcinoma(HCC) and analyze whether they are correlated with patient *** One hundred and twenty patients with early-stage HCC were enrolled in our study, with the collection of formalin fixed, paraffin-embedded(FFPE) specimens and clinicopathological data. Tumor areas were marked by certified pathologists on a hematoxylin and eosinstained slide, and cancer and adjacent non-cancerous tissues underwent extraction of DNA, which was analyzed with the Affymetrix Onco Scan platform to assess CNAs and loss of heterozygosity(LOH). Ten individuals with nonmalignant disease were used as the control group. Another cohort consisting of 40 patients with stage Ⅰ/Ⅱ HCC were enrolled to analyze gene expression and to correlate findings with the Onco Scan *** Copy number amplifications occurred at chromosomes 1 q21.1-q44 and 8 q12.3-24.3 and deletions were found at 4 q13.1-q35.2, 8 p 23.2-21.1, 16 q23.3-24.3, and 17 p13.3-12, while LOH commonly occurred at 1 p32.3, 3 p21.31, 8 p23.2-21.1, 16 q22.1-24.3, and 17 p 13.3-11 in early-stage HCC. Using Cox regression analysis, we also found that a higher percentage of genome change(≥ 60%) was an independent factor for worse prognosis in early-stage HCC(P = 0.031). Among the 875 genes in the Onco Scan Gene Chip, six were independent predictors of worse disease-free survival, of which three were amplified(MYC, ELAC2, and SYK) and three were deleted(GAK, MECOM, and WRN). Further, patients with HCC who exhibited ≥ 3 CNAs involving these six genes have worse outcomes compared to those who had < 3 CNAs(P < 0.001). Similarly, Asian patients with stage I HCC from The Cancer Genome Atlas harboring CNAs with these genes were also predicted to have poorer *** Patients with early-stage HCC and increased genome change or CNAs involving MYC, ELAC2, SYK, GAK, MECOM, or WRN are at risk for poorer outcome after resection.

关键词： Early-stage hepatocellular carcinoma Copy number aberration Prognosis Onco Scan Molecular inversion probe

Microscopic energy transport through photon-electronphonon interactions during ultrashort laser ablation of wide bandgap materials Part Ⅱ ： phase change

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中国激光 2009年第4期36卷 1029-1036页

作者：李丽珊姜澜 Hai-lung tsai 王素梅 School of International Co-Education Beijing Institute of Technology Beijing 100081 China Laser Micro-/Nano-Babrication Laboratory Department of Mechanical and Aerospace Engineering 3 rd School Beijing Institute of Technology Beijing 100081 China Laser-Based Manufacturing Laboratory Department of Mechanical and Aerospace Engineering Missouri University of Science & Technology (formerly University of Missouri-Rolla ) Rolla MO 65409 USA

飞秒激光产生的新现象引导了超快科学新领域的发展，对这些现象中存在的极其复杂的非线性、非平衡过程的理论解释是一个巨大挑战。虽然以飞秒激光为工具已取得大量成功实验结果，但在飞秒激光与物质相互作用方面尚不存在一个完备的理论... 详细信息

飞秒激光产生的新现象引导了超快科学新领域的发展，对这些现象中存在的极其复杂的非线性、非平衡过程的理论解释是一个巨大挑战。虽然以飞秒激光为工具已取得大量成功实验结果，但在飞秒激光与物质相互作用方面尚不存在一个完备的理论模型可以全面描述它。本文综述了近期对飞秒激光，特别是功率密度在1013~1014 W/cm2的激光脉冲与宽禁带物质相互作用中光子吸收电离过程的理论研究进展，在该光子-电子相互作用的过程中主要考虑了多光子电离和雪崩电离。

关键词：光纤元件激光应用研究

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Remote sensing ionospheric variations due to total solar eclipse, using GNSS observations

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Geodesy and Geodynamics 2020年第3期11卷 202-210页

作者： Mohamad Mahdi Alizadeh Harald Schuh Saeed Zare Sahar Sobhkhiz-Miandehi lung-Chih tsai Dept.of Geodesy and Geomatics Eng. K.N.Toosi University of TechnologyTehranIran Inst.of Geodesy and Geoinformation Science Technical University of BerlinBerlinGermany Dept.1:Geodesy GFZ German Research Center for GeosciencesPotsdamGermany Center for Space and Remote Sensing Research National Central UniversityChung-LiTaiwanChina GPS Application and Research Center National Central UniversityChung-LiTaiwanChina

For years great interest has been taken in the effects of physical phenomena on ionosphere structure. A total solar eclipse was visible in North America on August 21 st, 2017. This event offered a great opportunity for remote sensing the ionospheric behavior under the eclipse condition. In this study we investigated the effects of total solar eclipse on variations of Total Electron Content(TEC), and consequently deviations on regional models of Vertical TEC(VTEC), as well as variations in ionospheric scintillation occurrence. Although variations of TEC due to total solar eclipse are studied thoroughly by many authors, but the effect of solar eclipse on ionospheric scintillation has never been considered before. Our study is based on measurements from a high-rate GPS network over North America on the day of eclipse, a day before and after its occurrence, on the other hand, GPS measurements from groundbased stations on similar days were used to model TEC on the day of event, and also one day before and after it. The results of this study demonstrate that solar eclipse reduced scintillation occurrence at the totality region up to 28 percent and TEC values showed a decrease of maximum 7 TECU. Considering TEC models, our study showed apparent variations in the regional models, which confirms previous studies on ionospheric responses to eclipse as well as theoretical assumptions.

关键词： Ionosphere Solar eclipse Remote sensing Ionospheric scintillation Total electron content GPS measurements

Exploring Tourists＇ Push and Pull Travel Motivations to Participate in Songkran Festival in Thailand as a Tourist Destination： A Case of Taiwan Residents Visitors

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Journal of Tourism and Hospitality Management 2016年第5期4卷 183-197页

作者： lung Ming tsai Kongkidakarn Sakulsinlapakom ChineseCultureUniversity TaipeiTaiwan

This study aims to identify travel motivations including push and pull motivations that positively and directly affected the decision-making of Taiwan Residents travelers in participating in Songkran Festival in Thailand as their cultural destination. A questionnaire survey was conducted with 388 Taiwan Residents respondents who have never participated in Songkran Festival in Thailand before. The lists consisted of 30 attributes representing push motivation （14 attributes） as ＂psychological factor＂, pull motivation （13 attributes） as ＂destination factor＂, and intention to participate （three attributes）. Pearson＇s correlation and simple linear regression were used to examine the research hypotheses. As a result, push and pull motivations positively and directly affected the intention to participate in Songkran Festival in Thailand. For push motivation, Taiwan Residents visitors perceived that they want to relax and get experience in foreign land, and have enjoyable time with travel companion. For pull motivation, Taiwan Residents visitors perceived that there are many special events in Songkran Festival, the image of Songkran Festival, Thai food is delicious, and the people are friendly and courteous. The managerial implications were also made for tourism industry of Thailand in terms of examination motivations in implementing new market strategies, designing promotion, and decision-making about destination development.

关键词： push motivation pull motivation intention to participate Songkran Festival Thailand

Influence of CO_2 laser welding parameters on the microstructure, metallurgy, and mechanical properties of Mg-Al alloys

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International Journal of Minerals,Metallurgy and Materials 2012年第12期19卷 1114-1120页

作者： Chun-ming Lin Hsien-lung tsai Chang-lin Lee Di-shiang Chou Sun-fen Lee Jen-ching Huang Jyun-wei Huang Department of Mechanical Engineering College of Engineering Taiwan University of Science and Technology Taipei 10673 China Taipei Graduate Institute of Engineering Taiwan University of Science and Technology Taipei 10673 China Taipei Opto-Electronic Equipment Department Metal Industries Research & Development Cenlre Kaohsiung 811 China Taipei Department of Mechanical Engineering Tungnan University Shenkeng 22202 China Taipei

This study investigated the microstructural characteristics, metallurgy, microhardness, and tensile strength of AZ31 and AZ61 magnesium alloy weldments, fabricated in a CO2 laser welding process with the adjustment of various parameters. The results show that the AZ31 weldment contains equiaxed grains within the fusion zone （FZ）. By contrast, the FZ of the AZ61 weldment contains refined cellular grains and the partially melted zone （PMZ） contains bulk grains. We infer that the difference in aluminum content between the two magne-sium alloys results in different supercooling rates and solid grain structures. For both weldments, the ultimate tensile strength （UTS） de-creases following the CO2 laser welding process. However, no significant difference is noted between the UTS of the two weldments, sug-gesting that tensile strength is insensitive to the Al content of the magnesium alloy. The CO2 laser welding process is shown to increase the microhardness of both magnesium alloys. Furthermore, grain refinement is responsible for the maximum hardness in the FZ of both weld-ments. The AZ61 weldment has a higher content of Al, resulting in a greater grain refinement.

关键词： magnesium alloys laser welding microstructure mechanical properties morphology

A Distribution Management System for Relational Databases in Cloud Environments

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Journal of Electronic Science and Technology 2013年第2期11卷 169-175页

作者： Sze-Yao Li Chun-Ming Chang Yuan-Yu tsai Seth Chen Jonathan tsai Wen-lung tsai Department of Applied Informatics and Multimedia Asia University Department of Applied Informatics and Multimedia Asia University Institute for Information Industry

For a transaction processing system to operate effectively and efficiently in cloud environments, it is important to distribute huge amount of data while guaranteeing the ACID （atomic, consistent, isolated, and durable） properties. Moreover, database partition and migration tools can help transplanting conventional relational database systems to the cloud environment rather than rebuilding a new system. This paper proposes a database distribution management （DBDM） system, which partitions or replicates the data according to the transaction behaviors of the application system. The principle strategy of DBDM is to keep together the data used in a single transaction, and thus, avoiding massive transmission of records in join operations. The proposed system has been implemented successfully. The preliminary experiments show that the DBDM performs the database partition and migration effectively. Also, the DBDM system is modularly designed to adapt to different database management system （DBMS） or different partition algorithms.

关键词： Data migration database partition distributed database relational database.

Toward Cloud-Based Parking Facility Management System: A Preliminary Study

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Journal of Electronic Science and Technology 2013年第2期11卷 181-186页

作者： Chung-Yang Chen Wen-lung tsai Tzu-Yin Chen Department of Information Management National Central University Department of Information Management Shih Hsin University

An e-tag used on the freeway is a kind of passive sensors composed of sensors and radio- frequency identification （RFID） tags. The principle of the electronic toll collection system is that the sensor emits radio waves touching the e-tag within a certain range, the e-tag will respond to the radio waves by induction, and the sensor will read and write information of the vehicles. Although the RFID technology is popularly used in campus management systems, there is no e-tag technology application used in a campus parking system. In this paper, we use the e-tag technology on a campus parking management system based on the cloud-based construction. By this, it helps to achieve automated and standardized management of the campus parking system, enhance management efficiency, reduce the residence time of the vehicles at the entrances and exits, and improve the efficiency of vehicles parked at the same time.

关键词： Cloud-based construction e-tag parking facility management system radio-frequencyidentification.

Ultrafast Laser Fabrication of Novel Fiber Mach-Zehnder Interferometer Sensors and Its Cost-Effective Alternative Manufacturing Methods (Invited Paper)

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中国激光 2011年第6期38卷 11-16页

作者： Wang Sumei Jiang Lan Li Benye Zhao Longjiang Yang Jinpeng Wang Mengmeng Xiao Hai Lu Yongfeng Hai-lung tsai School of Mechanicat Engineering Beijing Institute of Technology Beijing 100081 China Department of Electrical and Computer Engineering Missouri University of Science and Technology Rolla MO 65409 USA Department of Electrical Engineering University of Nebraska-Lincoln Lincoln NE 68588-0511 USA Department of Mechanical and Aerospace Engineering Missouri University of Science and Technology Rolla MO 65409 USA

The recent progresses of fiber sensor fabrication in our group are *** inline fiber Mach-Zehnder interferometer(MZI) sensors with various structures are proposed and manufactured by femtosecond laser fabrication and fusion splicing for high-quality sensing of refractivity-sensitive parameters such as temperature,concentration,humidity,pressure,stress and strain: a) for an MZI sensor with a trench on a single-mode fiber,the refractive index(RI) sensitivity of acetone vapor is about 104 nm/RIU(refractive index unit) and the temperature sensitivity is 51.5 pm/℃ from 200 to 875 ℃;b) For an MZI consisting of two micro-air-cavities,the sensitivity is 501.5 nm/RIU and the detection limit is 1.994×10-6 RIU at the refractive index of 1.4;c) to reduce the fabrication cost,a new fusion-splicing based method is proposed to fabricate MZI sensors;the sensitivity is 664.57 nm/RIU with a detection limit of 1.5×10-6 RIU and its cost is tens of times cheaper than those of commercialized long period fiber Gratings;Also,5×10-5 acetone vapors are successfully detected by the MZI sensors coated with zeolite thin films.

关键词：激光技术干涉计传感器 MZI