Lunghwa University of Science and Technology is a private university of science and technology in the Taiwanese vocational education system, originally based in Guishan District, Taoyuan City, Taiwan.As its spirit of fundamental of initial creation in its school song, "a technical skill can be valued unlimitedly; both hands can be creating infinitely for country." The LHU is a multi-technology institution that has a good open-mined system and universal spirit of root cause studying architecture among structured cells.Popular undergraduate majors at LHU include electronics, business, mechanic, engineering, finance, philology, international business, industrial management, multi-media and gaming science, tourism and leisure science and computer science. Popular fields of study among graduate students include electronics, engineering, computer science and finance.LHU claims to provide HTC, TSMC, UMC and other famous firms with more engineering, computer science and business graduates than any other college or university, and philanthropic support of LHU is among the highest in the Taiwanese vocational education system and technical education system. Wikipedia.
Liu F.-H.,Lunghwa University of Science and Technology
Ceramics International | Year: 2011
This article describes a novel layer manufacturing process for forming a ceramic part with porous multi-channel architecture by laser gelling under low laser energy. The process involves bonding silica powder by gelled silica sol after exposure by a CO2 laser. Lower laser energy density of 0.8 J/mm2 is required to produce ceramic parts by "gelling effect". Therefore, the geometrical deflection and thermal distortion can be reduced after laser scanning. The inner porous structures were supported by ceramic slurries to prevent sagged deflection and to enhance dimensional accuracy due to optimal slurry suspension. The flexural strength of the green specimen was 4.7 MPa, while that of the gelled specimen was 12.5 MPa after heat-treatment at 1200 °C for 1.5 h. The proposed process has potential for fabricating complex interconnected porous ceramics for tissue engineering applications. © 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Tseng M.-L.,Lunghwa University of Science and Technology
Journal of Cleaner Production | Year: 2013
Measuring sustainable production indicators (SPIs) is becoming an important environmental activity due to government directives and increasing awareness among the populous to protect the environment and reduce waste. For printed circuit board manufacturers, measuring SPIs that are dedicated to sustainable activities usually require a multi-criteria structure with driving and dependence power for tracking. Hence, the measures of SPIs are always based on subjective perceptions and interactive relations in nature. A hybrid method for composing a hierarchical structure based on linguistic preferences and that concurrently applies perception judgment is lacking. This study proposes a novel approach in which fuzzy set theory and interpretive structural modeling are adopted to address the analytical objective. The proposed criteria are categorized into a hierarchical structure and arranged into visual quadrants on a graph according to their driving and dependence powers. The insights graph and hierarchical structure could assist mangers in strategic planning related to improving their firms' environmental activities. Managerial implications and concluding remarks are addressed. © 2010 Elsevier Ltd. All rights reserved.
Lin R.-J.,Lunghwa University of Science and Technology
Journal of Cleaner Production | Year: 2013
Green supply chain management (GSCM) has become a proactive approach to enhance environmental performance. Under stakeholder pressures and regulations, firms need to enhance GSCM practice, which are influenced by practices such as green purchasing, green design, product recovery, and collaboration with customers and suppliers. As proactive firms adopt GSCM, their economic performance and environmental performance will be improved. Hence, this study aims to examine the influential factors among eight criteria of three main GSCM practices, namely practices, performances, and external pressures. To deal with the vagueness of human being's perceptions, this study utilizes the fuzzy set theory and decision making trial and evaluation laboratory method to form a structural model to find out the cause and effect relationships among criteria. The results and managerial implications are discussed. © 2010 Elsevier Ltd. All rights reserved.
Wu J.-Y.,Lunghwa University of Science and Technology
Applied Soft Computing Journal | Year: 2011
Developing an efficient classification method is a challenge task in many research domains, such as neural network (NN) classifiers, statistical classifiers and machine learning. This study focuses on NN classifiers, which are data-driven analytical techniques. This study presents a cerebellar model articulation controller NN (CMAC NN) classifier, which has the advantages of very fast learning, reasonable generalization ability and robust noise resistance. To increase the accuracies of training and generalization, the CMAC NN classifier is designed with multiple-input and multiple-output (MIMO) network topology. The performance of the proposed MIMO CMAC NN classifier is evaluated using PROBEN1 benchmark datasets (such as for diabetes, cancer and glass) taken from the UCI Machine Learning Repository. Numerical results indicate that the proposed CMAC NN classifier is efficient for tested datasets. Moreover, this study compares the experimental results of the CMAC NN classifier with those in the published literature, indicating that the CMAC NN classifier is superior to some published classifiers. Therefore, the CMAC NN classifier can be considered as an analytical tool for solving classification tasks, such as medical decision making. © 2010 Elsevier B.V. All rights reserved.
Wen W.,Lunghwa University of Science and Technology
Expert Systems with Applications | Year: 2010
This paper presents an intelligent traffic management expert system with RFID technology. The system provides both practically important traffic data collection and control information and can trace criminal or illegal vehicles such as stolen cars or vehicles that evade tickets, tolls or vehicle taxes. The system architecture consists of an RFID reader, a passive tag, a personal computer, a pair of infrared sensors, and a high-speed server with a database system. Based on RFID technology, the system collects and calculates average speed and average flow information on each road of a district area in a city. It then transmits the messages from all the congested roads in a district area to the server in the district center via a communication program. Through a flooding algorithm, each server in a district center exchanges and updates information with all neighbor servers in other district centers so all that the servers in various district centers can get all the latest congestion messages in a city. Therefore, a dynamic navigation system can find the shortest path that avoids congested roads. Meanwhile, we compare three types of tags for choosing a better solution for e-plates in the future. We also adopt infrared sensors for detecting cars that do not have a tag. © 2009 Elsevier Ltd. All rights reserved.
Lin K.-P.,Lunghwa University of Science and Technology
IEEE Transactions on Fuzzy Systems | Year: 2014
This study proposes a novel evolutionary kernel intuitionistic fuzzy c-means clustering algorithm (EKIFCM) that combines Atanassov's intuitionistic fuzzy sets (IFSs) with kernel-based fuzzy c-means (KFCM), and genetic algorithms (GA) are optimally used simultaneously to select the parameters of the EKIFCM. The EKIFCM can obtain the advantages of intuitionistic fuzzy sets, kernel functions, and GA in actual clustering problems. Experiments on 2-D synthetic datasets and machine learning repository (http://archive.ics.uci.edu/beta/) datasets show that the proposed EKIFCM is more efficient than conventional algorithms such as the k-means (KM), FCM, Gustafson-Kessel (GK) clustering algorithm, Gath-Geva (GG) clustering algorithm, Chaira's intuitionistic fuzzy c-means (IFCM), and kernel-based fuzzy c-means with Gaussian kernel functions [KFCM(G)] in standard measurement indexes. © 2013 IEEE.
Tsai L.-C.,Lunghwa University of Science and Technology
Progress In Electromagnetics Research C | Year: 2014
A dual-band bow-tie-shaped CPW-fed slot antenna design for wireless communication applications is proposed. The antenna consists of a signal strip, two conducting strips and bow-tie-shaped slots. With simple tuning geometrical parameters, the proposed antenna is suitable for WLAN 2.4/5.2/5.8 GHz bands. This antenna is designed on a single-layer PCB FR4 substrate with permittivity εr = 4:4, loss tangent tan δ = 0:0245 and thickness h = 1:6 mm. The antenna size of the radiating area and ground plane is 60 × 45mm2. The measured results show a positive agreement with the simulated results.
Chen Y.-C.,Lunghwa University of Science and Technology
Journal of Alloys and Compounds | Year: 2012
The microwave dielectric properties of (Mg (1-x)Zn x) 2SnO 4 ceramics were examined with a view to their exploitation for mobile communication. The (Mg (1-x)Zn x) 2SnO 4 ceramics were prepared by the conventional solid-state method with various sintering temperatures. The X-ray diffraction patterns of the (Mg 0.93Zn 0.07) 2SnO 4 ceramics revealed no significant variation of phase with sintering temperatures. Dielectric constant ( r) of 8.50, quality factor (Q × f) of 186,100 GHz, and temperature coefficient of resonant frequency ( τf) of -61 ppm/°C were obtained for (Mg 0.93Zn 0.07) 2SnO 4 ceramics that were sintered at 1550 °C for 4 h. © 2011 Elsevier Ltd. All rights reserved.
Chen Y.-C.,Lunghwa University of Science and Technology
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control | Year: 2011
The microwave dielectric properties of (Mg (1-x) Co x) 2SnO 4 ceramics were examined with a view to their exploitation for mobile communication. The (Mg (1-x)Co x) 2SnO 4 ceramics were prepared by the conventional solid-state method with various sintering temperatures. The X-ray diffraction patterns of the (Mg (1-x)Co x) 2SnO 4 ceramics revealed no significant variation of phase with sintering temperatures. Specimens were not single-phase materials; small amounts of MgO and SnO 2 as the second phases were observed in all specimens. A dielectric constant (ε r) of 8.8, a quality factor (Q × f) of 110 800 GHz (at 16.4 GHz), and a temperature coefficient of resonant frequency (τ f) of-66 ppm/°C were obtained for (Mg 0.93Co 0.07) 2SnO 4 ceramics that were sintered at 1550°C for 4 h. The proposed dual-band co-planar waveguide (CPW)-fed inverted-E-shaped monopole covered the industrial, scientific, medical (ISM), high-performance radio local area network (HIPERLAN), and unlicensed national information infrastructure (UNII) bands. A 13.62% bandwidth (return loss <10 dB) of 2.43 GHz, and a 20.69% bandwidth (return loss <10 dB) of 5.38 GHz was successfully achieved. © 2011 IEEE.
Kuo T.-H.,Lunghwa University of Science and Technology
Industrial Management and Data Systems | Year: 2013
Purpose - The purpose of this paper is to look at the relationships among factors which result in improved knowledge sharing, through the empirical validation of a theoretical model consisting of three dimensions: expected benefit in relation to knowledge sharing, trust at workplace, and employee knowledge-sharing behavior. Design/methodology/approach - This study targets three technological companies with a total of employees exceeding 1,500 (n=563), utilizing a survey questionnaire as the data collection instrument to test the relationship among the three dimensions. The structural equation modeling approach is used to test the proposed model. Findings - The results show that trust at workplace has a mediating effect on organizational knowledge-sharing behavior. It is also discovered that there is significant correlation between expected personal benefit through sharing knowledge and the development of trust at workplace. Originality/value - This study contributes empirical data to the predominantly theoretical literature by offering a deeper understanding of the mediating effect of trust on employee's expected benefit for the purpose of knowledge exchange behavior within teams and among teams. © Emerald Group Publishing Limited.