Tainan University of Technology

Tainan, Taiwan

The Tainan University of Technology, also known as Tainan Tech , is a private university serving approximately 10,000 students in the Tainan metropolitan area in southern Taiwan. The main campus sits in Yongkang District of Tainan. The school, founded in 1964 to provide professional training for women, opened its doors in 1965 as the Private Tainan Junior College of Home Economics. The school subsequently became the Tainan Women's College of Arts and Technology . Wikipedia.

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Chang C.-P.,Tainan University of Technology
Carbon | Year: 2013

A novel model is presented to obtain exact energy spectrum, Landau levels (LLs) and wave functions in AA-stacking N-layer Graphene under the influence of perpendicular electric and magnetic fields. A particular unitary transformation to deal with the broken mirror symmetry caused by a perpendicular electric field can transform an AA-stacking N-layer graphene into N independent graphene-like layers. The exact energy spectrum of a graphene-like layer is equal to E= EMLG+ε, where EMLG is the energy spectrum of a monolayer graphene and ε is controlled by the magnitude of electric field and layer number. The associated wave functions are clearly specified. Such a method is applied to analytically study the combined effect of the vertical electric field and magnetic fields on LLs and wave functions in AA-stacking N-layer graphenes. An analytical formula of the gate-tuned LLs clearly exhibits the dependence of LLs on the number of layers, strength of gated field and magnetic fields. © 2013 Elsevier Ltd. All rights reserved.

Li C.-T.,Tainan University of Technology
Information Technology and Control | Year: 2011

Recently, a smart card based authentication and key agreement scheme preserving the user anonymity was proposed by Wang, Juang and Lei, that is designed to provide users with secure activities in ubiquitous computing environments. The authors proved that their scheme delivers important security properties and functionalities, such as without maintaining password/verification tables, freedom on password selection and alteration, mutual authentication, user anonymity, no time synchronization problem, key agreement implementation, forgery attack resistance and computation efficiency. However, we show that Wang et al.'s scheme has potential security flaws, which enable malicious attackers to counterfeit an application server to spoof the victim client and damage the security of session key and the property of user anonymity. In this paper, we propose an enhanced version of Wang et al.'s scheme to remedy these flaws. The proposed scheme not only ensures the merits of their scheme but also enhances the security of their scheme without raising any computation cost.

Chen Y.-T.,Tainan University of Technology
Journal of Computer Assisted Learning | Year: 2014

Although computer- and Internet-aided learning for hearing-impaired students has been a trend in the modern days, a few studies were done to examine their effectiveness in strengthening learning motivation and, in turn, enhancing learning efficiency. This study attempts to establish an interactive self-regulated learning environment and employs Attention, Relevance, Confidence, Satisfaction motivation model, hyperlink technology, modular concepts and online learning community to design teaching contents and presentation of teaching materials. An empirical study was conducted to examine the effects of hearing-impaired students learning motivation and cognitive attitude of learning environment. The results showed that interactive and self-regulated learning environment could effectively strengthen learning motivation and promote positive learning behaviour in hearing-impaired students. © 2013 John Wiley & Sons Ltd.

Weng C.-J.,Tainan University of Technology | Yen G.-C.,National Chung Hsing University
Cancer and Metastasis Reviews | Year: 2012

Cancer metastasis refers to the spread of cancer cells from the primary neoplasm to distant sites, where secondary tumors are formed, and is the major cause of death from cancer. Natural phytochemicals containing phenolic compounds have been widely demonstrated to have the capability to prevent cancer metastasis. Among phenolic compounds, flavonoids are a very large subclass, and they are abundant in food and nutraceuticals. The number of reports demonstrating that flavonoids are an effective natural inhibitor of cancer invasion and metastasis is increasing in the scientific literature. Catechin derivatives, (-)-epigallocatechin-3-gallate, (-)-epigallocatechin, (-)-epicatechin-3-gallate, and (-)-epicatechin, are the most studied compounds in this topic so far; genistein/genistin, silibinin, quercetin, and anthocyanin have also been widely investigated for their inhibitory activities on invasion/metastasis. Other flavonoids in dietary vegetable foods that are responsible for anti-invasive and anti-metastatic activities of tumors include luteolin, apigenin, myricetin, tangeretin, kaempferol, glycitein, licoricidin, daidzein, and naringenin. To effectively overcome the metastatic cascade, including cell-cell attachment, tissue-barrier degradation, migration, invasion, cell-matrix adhesion, and angiogenesis, it is essential that a bioactive compound prevent tumor cells from metastasizing. This review summarizes the effects of flavonoids on the metastatic cascade and the related proteins, the in vitro anti-invasive activity of flavonoids against cancer cells, and the effects of flavonoids on anti-angiogenic and in vivo anti-metastatic models. The available scientific evidence indicates that flavonoids are a ubiquitous dietary phenolics subclass and exert extensive in vitro anti-invasive and in vivo anti-metastatic activities. © 2012 Springer Science+Business Media, LLC.

Weng C.-J.,Tainan University of Technology | Yen G.-C.,National Chung Hsing University
Cancer Treatment Reviews | Year: 2012

Cancer metastasis is the major cause of cancer-related death, and chemoprevention is defined as the use of natural or synthetic substances to prevent cancer formation or cancer progress. Evidence that phenolic compounds may have a potential inhibitory effect on cancer invasion and metastasis is increasingly being reported in the scientific literature. Curcumin, resveratrol, and their related derivatives are the most studied compounds in this topic so far; gallic acid, chlorogenic acid, caffeic acid, carnosol, capsaicin, 6-shogaol, 6-gingerol, and their corresponding derivatives are also suggested to be the active members of the phenolic family on anti-invasion and anti-metastasis. Because metastasis occurs through a multistep process, these bioactives might act on a variety of stages of the metastatic process to prevent tumor cells from metastasizing. This review summarizes the common protein targets and signaling pathways for the inhibition of invasion and metastasis as well as past publications on the in vitro and in vivo effects and molecular mechanisms of phenolic acids, monophenol, polyphenol, and their derivatives, except flavonoids, on cancer invasion and metastasis. Based on these data, we conclude that the daily consumption of natural dietary components that are rich in phenolics could be beneficial for the prevention of cancer metastasis. © 2011 Elsevier Ltd.

Wang Y.-F.,Tainan University of Technology
International Journal of Contemporary Hospitality Management | Year: 2013

Purpose: This study aimed to focus on developing a career competency model by examining the relationships among career competencies and career success from a career development viewpoint. Design/methodology/approach: This study adopted questionnaire survey to collect data from a sample of 277 respondents at 36 international tourist hotels and used the AMOS statistical software package to perform structural equation modeling (SEM) for analysis. Findings: The results showed that career competency model is a multifaceted construct comprising four competency dimensions that influence the career success of food and beverage (F&B) department employees in international tourist hotels. In particular, the competencies related to "career adjustment and control" competency dimension were the most influential competencies for career success. Originality/value: The career competencies detailed in this study are a potential reference for the planning of core or general education courses in the hospitality domain. Hospitality programs can offer a "hospitality career and employability" course that presents modules such as career recognition, career planning, self-management, job-seeking and mobility techniques, problem solving skills, ethics and safety in the workplace, workplace attitude, teamwork, and communication and networking skills. © Emerald Group Publishing Limited.

Li C.-T.,Tainan University of Technology
IET Information Security | Year: 2013

Password authentication has been widely used in computer networks to provide secure remote access control. In this study, the authors show that the improved password authentication and update scheme based on elliptic curve cryptography proposed by Islam and Biswas is vulnerable to offline password guessing, stolen-verifier and insider attacks. We propose an advanced smart card-based password authentication and update scheme and extend the scheme to provide the privacy of the client. By comparing the criteria with other related schemes, our scheme not only solves several hard security threats but also satisfies more functionality features. © 2013 The Institution of Engineering and Technology.

Cheng Y.-C.,Tainan University of Technology | Li S.-T.,National Cheng Kung University
IEEE Transactions on Fuzzy Systems | Year: 2012

Since its emergence, the study of fuzzy time series (FTS) has attracted more attention because of its ability to deal with the uncertainty and vagueness that are often inherent in real-world data resulting from inaccuracies in measurements, incomplete sets of observations, or difficulties in obtaining measurements under uncertain circumstances. The representation of fuzzy relations that are obtained from a fuzzy time series plays a key role in forecasting. Most of the works in the literature use the rule-based representation, which tends to encounter the problem of rule redundancy. A remedial forecasting model was recently proposed in which the relations were established based on the hidden Markov model (HMM). However, its forecasting performance generally deteriorates when encountering more zero probabilities owing to fewer fuzzy relationships that exist in the historical temporal data. This paper thus proposes an enhanced HMM-based forecasting model by developing a novel fuzzy smoothing method to overcome performance deterioration. To deal with uncertainty more appropriately, the roulette-wheel selection approach is applied to probabilistically determine the forecasting result. The effectiveness of the proposed model is validated through real-world forecasting experiments, and performance comparison with other benchmarks is conducted by a Monte Carlo method. © 2012 IEEE.

Chang C.-P.,Tainan University of Technology
RSC Advances | Year: 2014

First, we present an analytical approach to access the exact energy spectrum and wave functions of gated Bernal bilayer graphene (BBLG), with all the tight-binding parameters included. To tackle the broken mirror symmetry caused by a gated voltage (Vg) and interlayer interactions, we create a unitary transformation to reduce the Hamiltonian matrix of BBLG to a simple form, which can offer the analytical energy spectrum. The formulae generate the gated tunable energy bands and reveal that Vg changes the subband spacing, produces the oscillating bands, and increases the band-edge states. Then, we employ the analytical model to revisit the optical dipole matrix element and optical absorption spectra. In the absence of Vg, the anisotropic dipole matrix element exhibits a maximum around the point M and zero value along the high symmetry line ΓK in the first Brillouin zone. V g effectively induces the nonzero dipole matrix element along the high symmetry line ΓK, which makes a significant contribution in the absorption spectra. Moreover, the application of Vg opens an optical gap and gives rise to a profound low-energy peak in the absorption spectra. The dependence upon the gated bias Vg for the location and height of this peak clearly emerges through the analytical model. Our exact analytical model can be further used to study the many-body effect and exciton effect on the electronic and optical properties of BBLG. © the Partner Organisations 2014.

Wireless sensor networks (WSNs) can be quickly and randomly deployed in any harsh and unattended environment and only authorized users are allowed to access reliable sensor nodes in WSNs with the aid of gateways (GWNs). Secure authentication models among the users, the sensor nodes and GWN are important research issues for ensuring communication security and data privacy in WSNs. In 2013, Xue et al. proposed a temporal-credential-based mutual authentication and key agreement scheme for WSNs. However, in this paper, we point out that Xue et al.'s scheme cannot resist stolen-verifier, insider, off-line password guessing, smart card lost problem and many logged-in users' attacks and these security weaknesses make the scheme inapplicable to practical WSN applications. To tackle these problems, we suggest a simple countermeasure to prevent proposed attacks while the other merits of Xue et al.'s authentication scheme are left unchanged.

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