The Chinese Culture University is a private Taiwanese university located in Yangmingshan in Shilin District, Taipei, Taiwan. CCU was established in 1962 and is one of the largest universities in Taiwan with an enrollment of about 32,000 students. Satellite campuses are located in the Jianguo, Ximending, and Zhongxiao East Road areas of Taipei City.Originally founded as Far East University in 1962 by Chang Chi-yun, the school was renamed College of Chinese Culture by President Chiang Kai-shek in 1963 and finally became Chinese Culture University in 1980. CCU is now organized into twelve academic colleges: Liberal Arts, Foreign Language and Literature, Social science, Science, Engineering, Business Administration, Journalism and Communications, Arts, Environmental Design, Law, Agriculture and Education. Wikipedia.
Liu M.,Chinese Culture University
Reproductive Biology and Endocrinology | Year: 2011
Cortical granules are membrane bound organelles located in the cortex of unfertilized oocytes. Following fertilization, cortical granules undergo exocytosis to release their contents into the perivitelline space. This secretory process, which is calcium dependent and SNARE protein-mediated pathway, is known as the cortical reaction. After exocytosis, the released cortical granule proteins are responsible for blocking polyspermy by modifying the oocytes' extracellular matrices, such as the zona pellucida in mammals. Mammalian cortical granules range in size from 0.2 um to 0.6 um in diameter and different from most other regulatory secretory organelles in that they are not renewed once released. These granules are only synthesized in female germ cells and transform an egg upon sperm entry; therefore, this unique cellular structure has inherent interest for our understanding of the biology of fertilization. Cortical granules are long thought to be static and awaiting in the cortex of unfertilized oocytes to be stimulated undergoing exocytosis upon gamete fusion. Not till recently, the dynamic nature of cortical granules is appreciated and understood. The latest studies of mammalian cortical granules document that this organelle is not only biochemically heterogeneous, but also displays complex distribution during oocyte development. Interestingly, some cortical granules undergo exocytosis prior to fertilization; and a number of granule components function beyond the time of fertilization in regulating embryonic cleavage and preimplantation development, demonstrating their functional significance in fertilization as well as early embryonic development. The following review will present studies that investigate the biology of cortical granules and will also discuss new findings that uncover the dynamic aspect of this organelle in mammals. © 2011 Liu; licensee BioMed Central Ltd.
Chen W.-R.,Chinese Culture University
Finite Elements in Analysis and Design | Year: 2010
Two sets of lateral vibration equations for a spinning axially loaded twisted Timoshenko beam have been studied. The compressed axial load is assumed to be normal to the shear force and tangential to the axis of the beam for the two systems, respectively. A quadratic eigenvalue problem of a real gyroscopic system is formulated and utilized to investigate the free vibration and buckling stability of various twisted Timoshenko beams. Some typical results are compared with numerical results in the published literature to validate the accuracy of the presented analysis. The influence of thickness-to-width ratio, twist angle, spinning speed and axial load on the natural frequency and buckling load of Timoshenko beams has been investigated and discussed. Comparisons between the results of the two sets of system equations are also made to justify the effect of the axial load for various Timoshenko beams. © 2010 Elsevier B.V. All rights reserved.
Peng H.T.,Chinese Culture University
Journal of Strength and Conditioning Research | Year: 2011
Peng, H-T. Changes in biomechanical properties during drop jumps of incremental height. J Strength Cond Res 25(9): 2510-2518, 2011-The purpose of this study was to investigate changing biomechanical properties with increasing drop jump height. Sixteen physically active college students participated in this study and performed drop jumps from heights of 20, 30, 40, 50, and 60 cm (DJ20-DJ60). Kinematic and kinetic data were collected using 11 Eagle cameras and 2 force platforms. Data pertaining to the dominant leg for each of 3 trials for each drop height were recorded and analyzed. Statistical comparisons of vertical ground reaction force (vGRF), impulse, moment, power, work, and stiffness were made between different drop jump heights. The peak vGRF of the dominant leg exceeded 3 times the body weight during DJ50 and DJ60; these values were significantly greater than those for DJ20, DJ30, and DJ40 (all p < 0.004). The height jumped during DJ60 was significantly less than that during DJ20 and DJ30 (both p = 0.010). Both the landing impulse and total impulse during the contact phase were significantly different between each drop height (all p < 0.036) and significantly increased with drop height. There were no significant differences in the takeoff impulse. Peak and mean power absorption and negative work at the knee and ankle joints during DJ40, DJ50, and DJ60 were significantly greater than those during DJ20 and DJ30 (all p < 0.049). Leg, knee, and ankle stiffness during DJ60 were significantly less than during DJ20, DJ30, and DJ40 (all p < 0.037). The results demonstrated that drop jumps from heights >40 cm offered no advantages in terms of mechanical efficiency (SSC power output) and stiffness. Drop jumps from heights in excess of 60 cm are not recommended because of the lack of biomechanical efficiency and the potentially increased risk of injury. © 2011 National Strength and Conditioning Association.
Chen C.-F.,Chinese Culture University
Ecological Engineering | Year: 2013
Green roofs have multiple environmental benefits and are widely used around the world. In keeping with this mainstream movement, the use of green roofs has been increasing in Taiwan in recent years. This paper reviews policies promoting green roof development in Taiwan, and compares the environmental and economic performance of green roofs in Taiwan to those in East Asian countries and worldwide. National and regional government policies have stimulated the development of green roofs by establishing goals for reducing carbon emissions of cities, promoting green construction, mitigating heat island effects, and increasing urban flood control. Local studies of green roof performance are few, other than thermal investigations. These studies have shown that green roofs significantly contribute to thermal reduction and moderate temperature variations around buildings. One study sampled stormwater runoff from green roof sites and found that sediment and nutrient concentration on these roofs are up to ten times higher than on conventional bare roofs; however, acid rain can be neutralized by green roofs. Hydrographs have shown that reductions in runoff from green roofs are not as great as expected because retention and detention are affected by high rainfall intensity, which is the typical precipitation pattern in Taiwanese cities. Without additional maintenance, green roofs can contribute to nonpoint source pollution in urban cities in wet and hot weather zones, because of high runoff and associated mass loading. Moreover, the environmental benefits of green roofs in Taiwan may not be as significant as those in other countries in which utility costs are higher, where decreasing energy consumption and CO2 emissions would be of greater benefit. © 2012 Elsevier B.V.
Su P.-G.,Chinese Culture University |
Shieh H.-C.,Chinese Culture University
Sensors and Actuators, B: Chemical | Year: 2014
Novel flexible NO2 gas sensors were fabricated by covalently bonding graphene oxide (GO) to a gold electrode on a plastic substrate using a peptide chemical protocol and then reducing in situ GO film to a reduced GO (RGO) film. A pair of comb-like Au electrodes on a polyethylene terephthalate (PET) substrate were pretreated with cysteamine hydrochloride (CH) and then reacted with GO using N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) as the peptide coupling reagent, before undergoing a final reduction by sodium borohydride (NaBH 4). The anchored RGO film was characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and Fourier transform infrared spectroscopy (FTIR). The gas sensing properties, including sensitivity, sensing linearity, reproducibility, response time, recovery time, cross-sensitivity effects and long-term stability, were investigated. Interfering gas NH3 affected the limit of detection (LOD) of a target NO2 gas in a real-world binary gas mixture. The flexible NO2 gas sensor exhibited a strong response and good flexibility that exceeded that of sensors that were made from graphene film grown by chemical vapor deposition method (CVD-graphene) at room temperature. Its use is practical because it is so easy to fabricate. © 2013 Elsevier B.V.
Yang T.,Chinese Culture University
Journal of Computer Information Systems | Year: 2012
Currently, lots of enterprises widely use social network site for marketing campaigns, however, there are still limited literature in the related fields. This study investigated the determinant factors for the successful implementation of Facebook marketing by enterprises. Using the marketing communication model developed by Hoffman & Novak  as well as source credibility, social ties, consumer value and the involvement theory, this study tested the impact transferring messages through media on the message receiver's decision-making behavior. A total of 256 smart phone Facebookers were selected as research samples, and the hypotheses was tested using regression analysis. The research findings suggested that advertising messages provided by close friends only affect consumer brand attitudes, but advertising messages provided by commercial sources affect both consumer brand attitudes and purchasing intentions. Utilitarian and recreational advertising messages affect consumer advertising attitude, brand attitudes, purchasing intentions and involvement. Lastly, consumer involvement partially mediates the effects of utilitarian advertising and recreational advertising on advertising attitude, brand attitudes and purchasing intentions.
Chen W.-R.,Chinese Culture University
Journal of Sound and Vibration | Year: 2011
Utilizing the Timoshenko beam theory and applying Hamiltons principle, the bending vibration equations of an axially loaded beam with locally distributed internal damping of the KelvinVoigt type are established. The partial differential equations of motion are then discretized into linear second-order ordinary differential equations based on a finite element method. A quadratic eigenvalue problem of a damped system is formed to determine the eigenfrequencies of the damped beams. The effects of the internal damping, sizes and locations of damped segment, axial load and restraint types on the damping and oscillating parts of the damped natural frequency are investigated. It is believed that the present study is valuable for better understanding the influence of various parameters of the damped beam on its vibration characteristics. © 2011 Elsevier Ltd.
Su P.-G.,Chinese Culture University |
Peng Y.-T.,Chinese Culture University
Sensors and Actuators, B: Chemical | Year: 2014
An H2S gas sensor for use at room temperature was fabricated by the in-situ photopolymerization of a nanocomposite thin film of polypyrrole (PPy) and tungsten oxide (WO3) nanoparticles (PPy/WO3) on an alumina substrate. X-ray diffractometry (XRD) and scanning electron microscopy (SEM) were used to analyze the structure and morphology of the fabricated films. Comparative gas sensing results revealed that the sensor that was based on the PPy/WO3 nanocomposite film had much more response than that based on pure WO3 or PPy film in the detection of H 2S gas at room temperature. Microstructural observations revealed that PPy distributed into the PPy/WO3 nanocomposite film. Therefore, a model of the potential barriers to electronic conduction in the composite material was used to determine that the high response was associated with the stretching of the depletion layers at the interface of the PPy with the WO 3 film when the detected H2S gases are adsorbed at room temperature. The sensor that was based on a nanocomposite film of PPy/WO 3 responded strongly to very low concentrations of H2S gas at room temperature and its use is practical because of it is easy to fabricate. © 2013 Elsevier B.V.
Huang J.-T.,Chinese Culture University
IEEE Transactions on Neural Networks and Learning Systems | Year: 2012
Most existing adaptive neural controllers ensure semiglobally uniform ultimately bounded stability on the condition that the neural approximation remains valid for all time. However, such a condition is difficult to verify beforehand. As a result, deterioration of tracking performance or even instability may occur in real applications. A common recourse is to activate an extra robust controller outside the neural active region to pull back the transient. Such an approach, however, has been restricted to dynamic systems with matched uncertainty. We extend it to strict-feedback systems with mismatched uncertainties via multiswitching-based backstepping methodology. Each virtual and actual controller of the proposed design switches between an adaptive neural controller and a robust controller, with the switching algorithm being sufficiently smooth and, hence, able to be incorporated with the backstepping tool. The overall controller ensures globally uniform ultimate boundedness while simultaneously avoiding the possible control singularity. Simulation results demonstrate the validity of the proposed designs. © 2012 IEEE.
Kuo Y.-K.,Chinese Culture University
Industrial Management and Data Systems | Year: 2013
Purpose - The purpose of this paper is to investigate the effect of market orientation (MO) on organizational performance (OP) through organizational commitment (OC) in the intensely competitive environment of high-tech industrial clusters. The relationships among MO, OC, and OP are also examined. Design/methodology/approach - Structural equation modeling (SEM) was used to analyze the questionnaires completed by employees of 91 high-tech enterprises (n=335) located in the four science parks in northern, central, and southern Taiwan. Findings - The results indicate that MO and OC have positive and direct effects on OP. The effect of MO on OP is significantly increased by enhanced OC. Practical implications - This study provides corporate managers with valuable knowledge, which can enhance OC and OP. That is, successful organizations must combine the strengths and motivations of internal employees and respond to external changes and demands promptly to demonstrate the organization's value. Social implications - Regardless how the industrial environment becomes increasingly complex and diverse, OC of employees is still crucial. Only long-term retention of human capital can sustain operations and enhance OP. Originality/value - The most valuable contribution of this study is the understanding of OC as a mediator of MO and OP. This indicates that the only factors that guarantee OP are the talents who are willing to commit to the organization. Faced with increasingly severe challenges in the future, the results of this study contribute to existing literature by demonstrating that MO can sustain competitive advantages. © Emerald Group Publishing Limited.