National Chengchi University

About: National Chengchi University is a education organization based out in Taipei, Taiwan. It is known for research contribution in the topics: Population & China. The organization has 3465 authors who have published 6342 publications receiving 118821 citations. The organization is also known as: NCCU & Chengda.

Patching vulnerabilities with sanitization synthesis

Abstract: We present automata-based static string analysis techniques that automatically generate sanitization statements for patching vulnerable web applications. Our approach consists of three phases: Given an attack pattern we first conduct a vulnerability analysis to identify if strings that match the attack pattern can reach the security-sensitive functions. Next, we compute vulnerability signatures that characterize all input strings that can exploit the discovered vulnerability. Given the vulnerability signatures, we then construct sanitization statements that 1) check if a given input matches the vulnerability signature and 2) modify the input in a minimal way so that the modified input does not match the vulnerability signature. Our approach is capable of generating relational vulnerability signatures (and corresponding sanitization statements) for vulnerabilities that are due to more than one input.

The variable effects of dynamic capability by firm size: the interaction of innovation and marketing capabilities in competitive industries

Abstract: Although investments in marketing and innovation capabilities theoretically help firms to compete in dynamic markets and enhance performance, company size has a strong influence on whether this is the case. In a test of a proposed conceptual model, this study of 692 small, medium, and large enterprises found that large firms prospered from building dynamic capabilities under conditions of high industry competitiveness, while investments in innovation and marketing individually diminished small firms’ performance. The effect was mixed for medium-size firms. In small enterprises, however, dynamic capability proved to be crucial in order to withstand competition. Therefore, taking into account these firms’ limited resources, managerial efforts should be focused on the integration of marketing and innovation capabilities, because each capability alone does not have a significant positive impact on performance. In medium-sized enterprises, the support of marketing capability is required to raise profitability under conditions of high industry competitiveness; otherwise, innovation would not lead to actual profits. For large enterprises, industry competitiveness was found to be a less serious threat to performance, and instead is a catalyst to the development of capabilities, suggesting that managers of such firms should focus on building long-term strategic advantages.

Hedonic and Utilitarian Motivations for Physical Game Systems Use Behavior

Abstract: With the recent proliferation of physical game systems in entertainment contexts, gaining a better understanding of why users are willing to utilize physical game systems has become an important topic for practitioners and academics. The current study attempts to explore the determinants of behavioral intention pertaining to the use of physical tennis games from the perspective of both hedonic and utilitarian motivations. A research model is proposed based on the existing literature. Data collected from 124 experienced players of physical tennis games are tested against the research model using the partial least squares approach. The results indicate that both perceived exercise utility and perceived enjoyment have a significant influence on behavioral intention. In addition, perceived motion-sensing, challenge, interactivity, ease of use, and design aesthetics are found to have a significant effect on perceived enjoyment. More specifically, perceived motion-sensing is observed to be the antecedent of per...

Measuring virtual experience in a three-dimensional virtual reality interactive simulator environment: a structural equation modeling approach

Abstract: With the rapid development of the VR market, virtual experience has increasingly been the object of study in recent years. A growing number of studies have reported the positive effect that virtual experience can have on a user's mood and loyalty. However, few studies have investigated the influence of the mechanism of virtual experience on users' mood and loyalty. To compensate for this research gap, this study aims to evaluate consumers' virtual experience by examining the flow state in a virtual environment. A total of 368 valid questionnaires were collected, and a structural equation modeling approach was employed in the data analysis. The study reveals that forming flow involves many factors: the intrinsic characteristics of the mediated environment, the consumer's assumptions and perceptions prior to entering the flow state, the stage at which the customer enters the flow state, and the consequences of the flow experience.