Tainan University of Technology

About: Tainan University of Technology is a education organization based out in Tainan City, Taiwan. It is known for research contribution in the topics: Password & Authentication. The organization has 311 authors who have published 641 publications receiving 10826 citations.

Design and implementation of the baseband transceiver for the HD radio AM system

Abstract: In recent years, the spectrum resource has become a more and more important consideration for the designs of wireless communication system. Therefore, Hybrid In-Band On-Channel (HIBOC) broadcasting system has been proposed as a composite solution to transmit digital and analog amplitude modulation (AM) signals in the conventional AM band. This system has been adopted by US as a digital radio broadcasting standard, and the specification is named as HD Radio AM. Although the modulation scheme in this standard is the Orthogonal Frequency Division Multiplexing (OFDM) which has been widely applied to various digital communication systems, the receiver architecture could not be the same as the conventional OFDM receiver design owing to the overlapping spectrum between the analog and digital signals. In this paper, a high-pass filter is employed to improve the performance of the symbol timing detection. In a fading channel, the channel response must be estimated before canceling the interference of the analog AM signals. Besides, when implementing the system on the FPGA based hardware platform, both the theoretical and the practical aspects have been considered to reach the available hardware resource. Simulation results show that the proposed scheme can keep good system performance.

An Analytical Solution for Wave Transformation Over Axi-Symmetric Topography

Abstract: The present study considers wave scattering phenomena around a cylindrical island mounted on a general axi-symmetric topography or a general submerged truncated axi-symmetric shoal based on the mild-slope equation. The method of separation of variables and Taylor series expansion are invoked to find the approximate solution to the variable water depth region which varies proportionally to an arbitrary power of radial distance. Validations against the solutions for the combined wave refraction and diffraction around a cylindrical island mounted on a paraboloidal shoal of Liu et al. in 2004 and the scattering and trapping of wave energy by a submerged truncated paraboloidal shoal of Lin and Liu in 2007 show excellent agreements as the power of radial distance being equal to two. For the solutions of wave refraction and diffraction around a cylindrical island mounted on a shoal with depth proportionally to an arbitrary power of radial distance, good agreements with Zhai et al.’s (2013) solutions are demonstrated. Since the robustness of the assumption of a general axi-symmetric geometry based on an arbitrary power variability of the radial distance, the present solution can be very conveniently employed to investigate the effects of bottom topography on wave scattering and trapping patterns.

Investigation into the Discrepancies Between Writing on Paper and Writing on a Touchscreen Device.

Abstract: Due to the complexity of text in Asian languages and hence the complexity of input methods, demand for stylus-type input is higher in Asian than the Western world, prompting Asian tech brands such as Samsung and Sony to introduce smart devices with in-built stylus to cater to this group of consumers. To account for general usage, this research has opted to employ mobile devices with built-in stylus as test equipment. In addition, in order to account for the difference between various sizes of devices, the researchers have chosen three device dimensions: 5.7 in, 9.7 in, and 12 in, for the tests, and each size of device is compared to an identically sized piece of paper. In consideration of the locality of the behavior of users, the subjects are asked to input using Traditional Chinese text only. Results from the experiment showed, in terms of writing behavior, that almost all subjects put the device flat on a table for writing, and that the habit of spinning the paper to an angle for writing is transferred to writing on a device. The finger positions on a stylus change depending on the properties of the device, especially when writing on the 5.7 in, the smallest device, touching the stylus at the smaller supporting points or completely dangle the pen away from the palm occurs much more often than on the bigger device sizes. In terms of writing performance, writing time on a device is generally longer than that on paper. The words written on a device are bigger and grow in size as the device size increases on the devices, but on the different sizes of paper the words stay relatively the same size. Words written on a device are generally less legible than those written on paper.

Integration of Delivery Policy and Application of Multiple Objective Decision Method－A Supply Chain Collaboration Approach

Abstract: Few previous researches have considered the integration of three echelons, which is the central focus of this paper. This study focuses specifically on the decisions of frequent deliveries of an order, under a three-echelon distribution system of multiple manufacturers, one distribution center (DC), and several retailers. The authors develop a fully-integrated model by multiple objective decision making method. The main goal is to find solution of the model which optimizes both objectives functions simultaneously. In addition, typical partial-integrated model is defined as quantity of products by which manufacturers produced and transported according to the result that achieves the minimum total cost of the DC and the retailers. Compared with fully-integrated model, the total relevant cost is significantly less than the total cost of a typical partial-integrated policy. The results of this study indicate that companies should consider the changes necessary to support fully integration; the total relevant cost within the supply chain can be significantly reduced when compared with a typical partial-integration. Keywords: Supply Chain Management, Multiple Objective, Integration, Distribution Center, Three Echelons

Age Is Not a Relative Contraindication for Surgical Treatment of Infected Aortic and Iliac Aneurysms.

Abstract: LTC staff, and Susan Goldman for assistance in coordinating the study. We would also like to thank Robert Rubinstein, co-PI. Conflict of Interest: The authors declare no conflicts of interest. This work was supported by a grant from the National Institute on Aging (grant number 5R01AG28469, J.K. Eckert, PI).