High-Frequency Dimmable Electronic Ballast for Automotive HID Lamps

Huang-Jen Chiu1,Hsiu-Ming Huang,Li-Wei Lin,Shann-Chyi Mou,Pang-Jung Liu 제어로봇시스템학회 2005 제어로봇시스템학회 국제학술대회 논문집 Vol.2005 No.6

柳永詞析賞擧例

王久烈 단국대학교 중어중문학과 1982 中國文學報 Vol.- No.5

柳永是北宋傑出的詞家, 可惜的是宋史裡沒有他的傳。 我們覺得一個優秀的作家, 不應該不爲他立傳 ; 而不爲他立傳, 使我們對柳永的生平難以確切地明瞭, 甚至連他的「名字」也都有了問題。我們從一些個人的著作和地方志裡所拔到的資料中, 有關他的「名子」·「籍貫」·「生卒年月」, 以及「登第年代」, 都衆說不一。 惟根據各項資料硏判, 我們得到的結論是 : 一. 柳永字耆卿, 初名三變字景莊。 二. 崇安人。 三. 生年約在宋太宗雍熙元年(西元九八四)至端拱元年(西元九八八)之間 ; 卒年約在宋仁宗皇祐末年(西元一○五三)。 四. 登第年代約爲宋仁宗景祐元年(西元一○三四)。

Reconsidering cell-assisted lipotransfer for breast augmentation: effect of stromal vascular fraction enrichment on graft survival assessed with 3-dimensional laser scanning

Li-Chen Chiu,Li-Shu Chiu,Cheng-Hung Chiu 대한미용의학회 2019 대한미용의학회지 Vol.3 No.1

Background: Cell-assisted lipotransfer (CAL) has been proposed to be beneficial for improving graft retention. Clinically, CAL involves the isolation of the stromal vascular fraction (SVF) from a portion of the lipoaspirate at the time of surgery. However, most studies related to SVF breast augmentation lacked a rigorous methodology and well-designed control. Objective: We aimed to determine the potential improvement of SVF enrichment in fat grafting for breast augmentation with objective volume assessment. Methods: From April 2015 to January 2016, 169 patients were enrolled after applying the exclusion criteria. Among them, 97 patients who underwent conventional fat grafting for breast augmentation were assigned to group A. The other 72 patients underwent SVFenriched fat grafting for breast augmentation and were assigned to group B. A retrospective comparative study was conducted to evaluate the graft survival using 3-dimensional laser scanning. Results: There was no significant difference between the 2 groups in terms of mean age, original breast volume, grafted fat volume, and postoperative weight change. Breast volume assessments revealed that the percentage of graft survival at 12 months was 69.2% in group A and 71.1% in group B, with no significant difference (p=0.641). The preoperative body mass index was significantly lower in group A than in group B. The volume of suctioned fat was significantly less in group A. The operation time was significantly shorter in group A. The postoperative complication rates were significantly lower in group A than in group B. Conclusion: SVF-enriched fat grafting for breast augmentation was associated with a larger amount of harvested fat, a longer operation time, and a higher incidence of complications. The graft retention rate was not significantly increased. The findings of our study do not support the use of SVF in fat grafting for breast augmentation. Level of Evidence: IV

Three methods for studying coupled vibration in a multi flexible disk rotor system

YiJui Chiu,Xiao-Yun Li,Yi-Cheng Chen,Sheng-Rui Jian,Chia-Hao Yang,I-Hsiang Lin 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.11

This paper improved and developed Shaft-disk-blade (SDB) rotor system based on the previous studies of the authors in the last decade from Yang and Huang (2005) to Chiu et al. (2017). This paper also explored blade-bending, disk-transverse, and shaft-torsion coupling vibration of a multi flexible disk rotor system. Unlike the previous studies of the authors, this paper adopted three methods: (a) Assumed mode method (AMM), (b) Finite element method (FEM), and (c) experimental method. The first approach is the main method, and the two other methods are complementary. Results generated from the three methods were then compared and analyzed. Based on the previous definition of the authors, a flexible disk rotor system displays three types of coupling vibrations: Inter-blade, SDB, and diskblade modes. The system changes the rules of natural frequencies and mode shapes. This paper presents several interesting results. First, the author determined the change rules of the mode shapes and natural frequencies using the AMM, FEM (including three kinds of software), and the experimental method. Second, numerical calculation results also revealed that two phenomena regarding the distance of disk and flexible disk would be affected by the natural frequencies. Third, the experimental results would be explored in this paper. Last, the flexible disk could affect the system instability in the case study of rotation effects.

Investigation of Seismogenic Region in the Subduction Zone from the Analysis of Multi-path Effect of High-frequency Seismic Wave Propagation from Intermediate-Depth Earthquakes

(J . M . Chiu),(Z . S . Liaw),(Y . T . Yang),(S . C . Chiu),(Yu Chiung Teng) 한국지진연구소 1996 MODERN SEISMOLOGY Vol.- No.-

A Robust Estimation/Compensation Scheme of IQ Imbalance with Frequency Offset in Communication Receivers

Yi-Jen Chiu,Szu-Lin Su,Shao-Ping Hung 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7

Direct conversion receiver is widely utilized in today’s communication system. However, it usually faces a common problem of front-end distortions such as IQ imbalance and frequency offset. When treated separately, effective algorithms exist for estimating and compensating for IQ imbalance as well as frequency offset. With both effects present, such algorithms do not lead to useful estimates of the related parameters. OFDM is sensitive to nonidealities in the receiver front-end. This leads either to stringent front-end specifications and, thus, an expensive device, or large performance degradations. A good summary, Guanbin [1] discusses the transmitter calibration briefly and proposes an estimation technique for calculating the imbalance parameters. For the IEEE 802.11a OFDM standard, Tubbax observe that additional effects from OFDM channel estimation and correction can affect the IQ correction circuits and proposes a smoothing procedure to compensate. The above procedure is not effective when the CFO is too small. This paper extends the previous results mentioned above by developing a simple and adaptive least-square (LS) algorithm to estimate and compensate for IQ imbalance assuming the IQ imbalance compensation is not affected by the CFO, then the CFO is estimated using any of several conventional algorithms. With the additional requirement of a known periodic training sequence (see Su and Chiu ) this process extends the results of to practical cases when CFO is small. Our compensation scheme eliminates the IQ imbalance based on one OFDM symbol and performs well in the presence of CFO. The compensation scheme has fast convergence and small residual degradations. The solution is implemented with an adaptive filter to adjust the parameters of estimation and is computationally relatively inexpensive. With the proposed method as shown in Fig. 1, we can estimate the effect of IQ imbalance without knowing CFO exactly by means of an repetitive training sequence as depicted in Fig.2. Two set of I/Q mismatch parameters, (εr=1.5㏈, ?φr=1.5˚) and (εr=3㏈, ?φr=3˚), are used in the simulations. Fig. 3 shows the performance comparison between the systems with and without I/Q imbalance compensation. It shows that the proposed algorithm can give a satisfactory performance for CFO > 5㎑. To reduce the drawback of high sensitivity under low CFO channel, we modify the adaptive scheme and the fine IQ estimation method to solve the problem of performance degradation when CFO is small. Therefore, our IQ imbalance estimation/compensation scheme potentially leads to low-cost and low-complexity receivers. The simulation results show that the modified scheme can achieve much better performance as shown in Fig. 4.

American Film Industry Challenges in China: Before and During COVID-19 Outbreak

Candy Lim Chiu,Jason Lim Chiu,Han-Chiang Ho,Zhicheng Zu KINFORMS 2020 Management Review Vol.15 No.2

The stagnation of the U.S. film market opened doors for Hollywood to depend on Chinese significant huge revenues;investments;and growth opportunities. Hollywood becomes a destination for Chinese outbound capital. However;before and during the pandemic outbreak;it shows how incredibly vulnerable Hollywood is in accessing the world s biggest market. This study analyzes the challenges of the Hollywood film industry in China;such as rampant piracy;strict content censorship;US-China trade war;and the recent COVID-19 pandemic outbreak. This study sheds light on the gaps in the existing US-China relationships in the film industry. The original contribution of this research is to set guiding questions that can facilitate a strategic analysis of the film industry and how they will emerge from this crisis.

FISH MEAL REPLACEMENT BY FERMENTED MIXTURE CONTAINING SOYBEAN MEAL AND EARTHWORM MEAL, Eisenia foetida IN DIET OF WHITE SHRIMP, Litopenaeus vannamei

Ya-Li Shiu,Shieh-Tsung Chiu,Chiu-Hsia Chiu,Chun-Hung Liu 한국수산과학회 양식분과 2015 한국수산과학회 양식분과 학술대회 Vol.2015 No.5

Improving the Sensitivity of a High-Tc SQUID Magnetometer with a Serial Array

Chiu-Hsien Wu,Hong-Chang Yang,J. C. Chen,C. T. Chiang,C. Y. Chen,Herng-Er Horng,J. T. Jeng,K. L Chen,M. J. Chen 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.5I

To pursue a high-reproducibility and high-quality SQUID for high-Tc superconducting applications, we have designed and fabricated a flip-chip magnetometer as a sensor for measuring weak magnetic signals. The magnetometer consists of a serial SQUID magnetometer coupled to a flux focuser. The SQUIDs are connected in series, thereby increasing the peak-to-peak value of the voltage-flux transfer function, V. A flux focuser is employed to increase the effective area of the SQUID. The serial SQUID array has high-quality device characteristics. High-Tc SQUID magnetometers exhibiting a magnetic field sensitivity of 45 fT/Hz1/2 in the white region and 200 fT/Hz1/2 at 1 Hz have been demonstrated in this work. The flip-chip SQUID magnetometer shows a sufficiently high sensitivity to record magnetocardiograms.

The Effects of Urban Redevelopment on Neighbourhood Housing Prices

Chiu On Ki,Wadu Mesthrige Jayantha 서울시립대학교 도시과학연구원 2010 도시과학국제저널 Vol.14 No.3

The topic of neighbourhood improvement is central to residential appraisal. The study empirically investigates how the redevelopment affects the housing values in the vicinity. Using price gradient approach based on hedonic pricing model, we study the effects of an urban redevelopment project on housing property prices during the pre-redevelopment stage, construction stage and post-redevelopment stage. The results show that there were significant increases in property prices between before implementation and after completion of the redevelopment project. Property value enhancements well ahead of the actual project completion are also observed. It suggests that redevelopment has brought overall improvements to the surrounding properties and the expectation of these advantages was taken into consideration in the pricing of the properties during the construction phase. In addition, the changes in housing price gradients reveal that the effects of redevelopment varied with proximity between the properties and the redeveloped site. Properties which have the closest proximity with the redevelopment are found to have experienced greater increase in price after redevelopment but less extent of price rise during construction. It is important for urban planners to carefully consider the externalities of redevelopment received by properties in different locations, in order to maximize the positive impacts of redevelopment on the neighbourhood.