CT-Guided Core Needle Biopsy of Deep Suprahyoid Head and Neck Lesions

En-Haw Wu,Yao-Liang Chen,Yi-Ming Wu,Yu-Ting Huang,Ho-Fai Wong,Shu-Hang Ng 대한영상의학회 2013 Korean Journal of Radiology Vol.14 No.2

Objective: To evaluate the efficacy of computer tomography (CT)-guided core needle biopsy (CNB) in the diagnosis of deep suprahyoid lesions in patients with treated head and neck cancers. Materials and Methods: Between December, 2003 and May, 2011, 28 CT-guided CNBs were performed in 28 patients with deep suprahyoid head and neck lesions. All patients had undergone treatment for head and neck cancers. Subzygomatic, paramaxillary, and retromandibular approaches were used. The surgical results, response to treatment, and clinical follow-up were used as the diagnostic reference standards. Results: All biopsies yielded adequate specimens for definitive histological diagnoses. A specimen from a right parapharyngeal lesion showed atypia, which was deemed a false negative diagnosis. Diagnostic accuracy was 27/28 (96.4%). Two minor complications were encountered: a local hematoma and transient facial palsy. Between the 18 or 20 gauge biopsy needles, there was no statistical difference in the diagnostic results. Conclusion: CT-guided core needle biopsy, with infrequent and minor complications, is an accurate and efficient method for the histological diagnosis of deep suprahyoid lesions in post-treated head and neck cancer patients. This procedure can preclude an unnecessary surgical intervention, especially in patients with head and neck cancers.

GIS 데이터를 이용한 차량 시뮬레이터용 도로 구축에 관한 연구

임형은(Hung En Im),성원석(Won Suk Sung),황원걸(Won Gul Hwang),주승원(Seung Won Ju) Korean Society for Precision Engineering 2004 한국정밀공학회지 Vol.21 No.4

A bioassay for natural insect repellents

Eddie Hang Chio,En-Cheng Yang 한국응용곤충학회 2008 Journal of Asia-Pacific Entomology Vol.11 No.4

A practical bioassay for natural product insect repellents was developed and validated. The Asian tiger mosquito (Aedes albopictus) was used in this study. Djulis (Chenopodium spp.), an indigenous plant from Taiwan, provided better insect repellency than neem tree (Azadirachta indica) oil, a well-known insect repellent. The % repellency of each test material was converted to 50% effective dosage (ED50) by probit analysis for better comparison between test materials. The ED50 for insect repellency in descending order was djulis leave extract (0.532%), neem oil (0.579%); djulis seed extract (0.930%) and sea lily (Crinoid spp.) (1.022%). A practical bioassay for natural product insect repellents was developed and validated. The Asian tiger mosquito (Aedes albopictus) was used in this study. Djulis (Chenopodium spp.), an indigenous plant from Taiwan, provided better insect repellency than neem tree (Azadirachta indica) oil, a well-known insect repellent. The % repellency of each test material was converted to 50% effective dosage (ED50) by probit analysis for better comparison between test materials. The ED50 for insect repellency in descending order was djulis leave extract (0.532%), neem oil (0.579%); djulis seed extract (0.930%) and sea lily (Crinoid spp.) (1.022%).

THE ORBITAL EPHEMERIS OF THE PARTIAL ECLIPSING X-ray BINARY X1822-371

HSIEH, HUNG-EN,CHOU, YI,HU, CHIN-PING,YANG, TING-CHANG,SU, YI-HAO,LIN, CHING-PING,CHUANG, PO-SHENG,LIAO, NAI-HUI The Korean Astronomical Society 2015 天文學論叢 Vol.30 No.2

X1822-371 is a low mass X-ray binary with an accretion disk corona exhibiting partial eclipses and pulsations in the X-ray band. We update its orbital ephemeris by combining new RXTE observations and historical records, with a total time span of 34 years. There were 11 RXTE observations in 2011 but the eclipsing profile can be seen in only 4 of them. The eclipsing center times were obtained by fitting the profile with the same model as previous studies. Combined with the eclipsing center times reported by Iaria et al. (2011), the O-C analysis was processed. A quadratic model was applied to fit the O-C results and produced a mean orbital period derivative of $\dot{P}_{orb}=1.339(25){\times}10^{-10}s/s$, which is slightly smaller than previous records. In addition to the orbital modulation from the orbital profile, we also present our preliminary results for measuring the orbital parameters using the orbital Doppler effect from the pulsation of the neutron star in X1822-371. The updated orbital parameters from eclipsing profiles will be further compared with the ones from pulsar timing.

An IoT based Temperature Control System for Honey Bee Colony Winter Loss Prevention

( Sheng-hao Chen ),( Hung-jen Lin ),( Yu-cheng Yang ),( En-cheng Yang ),( Joe-air Jiang ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1

Honey bees are the most important plant pollinators in nature. Currently, about one-third of human food comes from flowering plants. About 80% of the plants need honey bees for pollination. However, extreme weather increases the possibility of honey bees being exposed to the threat of winter losses, as global climate change intensifies. To protect honey bee colonies, in this study, a heating system is proposed to maintain the temperature of a beehive during the winter. The heating system contains a beecounter, a monitoring system built for beehives, to automatically record the data of temperature and relative humidity both inside and outside the beehives and monitor honey bees’ behavior of coming in and going out of the beehives. When the beecounter detects that the temperature inside the beehive is below a certain threshold, the heating system will be activated to increase the temperature of the beehive. And, all environmental parameters and data are transmitted through a Wi-Fi module and sent to a cloud. With the IoT technology, the temperature inside the beehive will be precisely controlled to increase the survival rate of colonies during the winter. Finally, image processing techniques are used to calculate the honey bee eclosion rates to verify the effectiveness of the proposed system, and the results show that the proposed system can successfully maintain the temperature of the beehive and increase the numbers of the bees entering and leaving the beehive.

Nurse’s Radiation Safety Management Behavior

Shin, Ji Yeun,Jung, Hang Mi,Kang, Jung En,Jang, Jin Suk 한국간호과학회 2019 한국간호과학회 학술대회 Vol.2019 No.10

Research on the WIP-based Dispatching Rules for Photolithography Area in Wafer Fabrication Industries

( Yu Hsin Lin ),( Chih Hung Tsai ),( Ching En Lee ),( Chung Ching Chiu ) 한국품질경영학회 2007 The Asian Journal on Quality Vol.8 No.2

Constructing an effective production control policy is the most important issue in wafer fabrication factories. Most of researches focus on the input regulations of wafer fabrication. Although many of these policies have been proven to be effective for wafer fabrication manufacturing, in practical, there is a need to help operators decide which lots should be pulled in the right time and to develop a systematic way to alleviate the long queues at the bottleneck workstation. The purpose of this study is to construct a photolithography workstation dispatching rule (PADR). This dispatching rule considers several characteristics of wafer fabrication and influential factors. Then utilize the weights and threshold values to design a hierarchical priority rule. A simulation model is also constructed to demonstrate the effect of the PADR dispatching rule. The PADR performs better in throughput, yield rate, and mean cycle time than FIFO (First-In-First-Out) and SPT (Shortest Process Time).

Design and Implementation of a Two-Switch Buck-Boost Typed Inverter with Universal and High-Efficiency Features

Chien-Hsuan Chang,Chun-An Cheng,En-Chih Chang,Hung-Liang Cheng 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6

A typical photovoltaic (PV) grid-connection power system is usually consisted of multi-stage converters to perform multiple functions simultaneously. In order to simplify system configuration, reduce cost, and improve conversion efficiency, this paper proposes to adopt two-switch buck-boost (TSBB) dc-dc converters, and then develops families of buck-boost typed inverters via the connection with an H-bridge unfolding circuit with linecommuted operation. The proposed inverters have both step-up and step-down functions so that they are suitable for the applications with wide voltage-variation range. Depending on the conditions of dc input-voltage and ac output-voltage, the proposed circuits can work functionally as either buck-typed or boost-typed inverter. Due to operating with buck or boost principle, partial energy can be directly delivered to output to improve efficiency. Besides, since only one power switch operates with high-frequency, switching losses can be reduced significantly. Finally, one of the proposed TSBB inverters, named buck-cascaded buck-boost (BuCBB) inverter, is then implemented accordingly to generate 110 Vrms / 60 Hz output voltage. Experimental results have verified the validity of theoretical predictions and the feasibility of proposed inverters.

Research on the WIP-based Dispatching Rules for Photolithography Area in Wafer Fabrication Industries

Lin, Yu-Hsin,Tsai, Chih-Hung,Lee, Ching-En,Chiu, Chung-Ching The Korean Society for Quality Management 2007 The Asian Journal on Quality Vol.8 No.2

Constructing an effective production control policy is the most important issue in wafer fabrication factories. Most of researches focus on the input regulations of wafer fabrication. Although many of these policies have been proven to be effective for wafer fabrication manufacturing, in practical, there is a need to help operators decide which lots should be pulled in the right time and to develop a systematic way to alleviate the long queues at the bottleneck workstation. The purpose of this study is to construct a photolithography workstation dispatching rule (PADR). This dispatching rule considers several characteristics of wafer fabrication and influential factors. Then utilize the weights and threshold values to design a hierarchical priority rule. A simulation model is also constructed to demonstrate the effect of the PADR dispatching rule. The PADR performs better in throughput, yield rate, and mean cycle time than FIFO (First-In-First-Out) and SPT (Shortest Process Time).

THE UPDATED ORBITAL EPHEMERIS OF DIPPING LOW MASS X-ray BINARY 4U 1624-49

LIAO, NAI-HUI,CHOU, YI,HSIEH, HUNG-EN,CHUANG, PO-SHENG The Korean Astronomical Society 2015 天文學論叢 Vol.30 No.2

We present our analysis results for an updated orbital ephemeris for the dipping low mass X-ray binary 4U 1624-49, using the light curve collected by the All Sky Monitor (ASM) on board the Rossi X-ray Timing Explorer (RXTE) and the Monitor of All-Sky X-ray Image (MAXI). To make clear dip profiles, the light curve from the ASM and the MAXI were divided into ten 500d segments and four 400d segments for ASM and MAXI light curves, respectively, and folded with the linear ephemeris proposed by Smale et al. (2001). The phases of dip centers were determined by the method adopted from Hu et al. (2008). The phase drift was then fitted with a linear function. We obtained an updated orbital period of 0.869896(1) d and a phase zero epoch of JD 2450088.6618(57). No clear orbital period derivative is detected with a 2-sigma upper limit of $1.4{\times}10^{-6}(yr)^{-1}$ from a quadratic curve fitting of the dip phase evolution.