Articles

Permanent URI for this collection

https://repository.au.edu/handle/6623004553/75

Browse

Browsing Articles by Title

  • Item
    Adaptive Two-stage Spectrum Sensing under Noise Uncertainty in Cognitive Radio Networks
    ( 2016) Kornkamol Thakulsukannant ; Wilaiporn Lee ; Akara Prayote ; Kanabadee Srisomboon
    To utilize licensed spectrum bands efficiently, spectrum sensing needs to be accurate and fast. The occurrence of noise uncertainty and the lower in received PU signal power due to the distance between the transmitter and the receiver, path loss, are the main challenges that has a great impact on the accuracy of spectrum sensing. In this paper, we propose a new scheme of two-stage spectrum sensing, “Adaptive Two-stage Spectrum Sensing (ATSS)”, under noise uncertainty environment. ATSS is a modified of a conventional two-stage spectrum sensing where the decision threshold of both stages are adapted on the distance, estimated noise variance and calculated noise uncertainty interval. Therefore, ATSS improves the detection performance of the existing spectrum sensing and is robust to noise uncertainty. The contribution of this paper is three-fold. First, an unreliable detection and wasted stage activation of a conventional two-stage spectrum sensing are reduced. Second, noise uncertainty is addressed. Third, a new parameter, critical distance ( ), is proposed in order to reduce computational burden and sensing time of the first stage.
  • Item
    Alternative Modes of Export Entry for SMEs from Emerging Economies
    ( 2013) Amonrat Thoumrungroje
    The primary purpose of this study is to investigate the specific issue of modes of export entry of small and medium-sized enterprises (SMEs) that originate from emerging economies. Four theoretical frameworks on the process of internationalization (i.e. FDI, stage models, network perspective, and organizational capability perspective) are reviewed with respect to the internationalization of SMEs. Direct and indirect exporting are compared based on transaction cost analysis (TCA) and the network perspective. Problems arising from the use of extant independent export intermediaries are highlighted with a recommended remedy. After analyzing the situation and the nature of SMEs from the emerging economies, propositions on alternative modes of export entry for such firms are postulated.
  • Item
    The antecedents and consequences of conspicuous consumption of luxury fashion goods in a social media platform
    ( 2018) Wanwisa Charoennan ; Huang, Kai-Ping
    The purpose of this study was to examine the influences of social media usage, key opinion leaders (KOLs), self-image congruency, and materialism on conspicuous consumption, as well as how conspicuous consumption had an impact on happiness with a purchase and satisfaction with luxury fashion products in a social media platform. The literature review suggested that conspicuous consumption was accelerated over a social media platform and by the role of KOLs because they promoted the favorable self-expression through a product consumption that exhibits an image that was congruent with an individual’s ideal self-image. The literature also implied that a materialistic consumer was likely to engage in conspicuous luxury consumption. Regarding its consequences, a happiness with a purchase and a satisfaction with a product were likely to be associated with conspicuous consumption. The literature in this study provided a more holistic comprehension of conspicuous consumption by incorporating both influential factors and potential consequences, and can be referred to in developing more efficient advertising and marketing activities.
  • Item
    Bank CG and Basel III
    (Manager 360 Monthly Magazine, 2011-01-10)
  • Item
    Content Analysis of Wiki Discussions for knowledge Construction: Opportunities and Challenges
    ( 2012) Vasa Buraphadeja
    Research on several aspects of asynchronous online discussions in online and hybrid courses has been successfully conducted using content analysis in the past. With the increase in Web 2.0 and social media use in education, research on knowledge construction within newer virtual environments like blogs or wikis is just emerging. This study applies a well-known model of content analysis for knowledge construction to an educational wiki environment. Twelve graduate students’ contributions to a wiki in a 14-week on-campus course on Web 2.0 technologies in education are analyzed. Results indicate that the wiki platform fosters collaborative knowledge construction and that is necessary to develop new frameworks to analyze content in new learning environments. Wiki environments provide opportunities for researchers to capture the process of collaboration, knowledge construction, and meta-cognition.
  • Item
    The Contingent Role of Customer Orientation and Entrepreneurial Orientation on Product Innovation and Performance
    ( 2013) Amonrat Thoumrungroje ; Racela, Olimpia C.
    This paper synthesizes marketing and entrepreneurship literature and postulates the complementary nature of a customer orientation with that of an entrepreneurial orientation, then explores their relationships with product innovation and performance. A path analysis was used to test the hypotheses based on data collected from a sample of 159 strategic business units in 15 different industries. The results show that an entrepreneurial orientation does not have a relationship with product innovation unless it is coupled with the complementary effect of a customer orientation. This study also indicates that product innovation mediates this complementary effect on new product and firm performance. In addition, a customer orientation is found to exert a direct positive effect on both new product and firm performances. Although most hypotheses were supported, two out of five were not. As such, the findings present valuable practical insights as well as interesting contributions to the theoretical advancements in marketing and entrepreneurship.
  • Item
    Corporate Governance, Violations and Market Reactions
    ( 2013) Visit Phunnarungsi
    We test the relation between firm-level corporate governance and the market reaction to announcements of violations of rules and regulations by Thai listed firms. We find no significant difference in market reaction when firms with high and low governance scores commit violations. We do find a larger negative abnormal return when firms with low past violation records violate the rules. The market reaction is especially strong, − 8.1% on average, when firms with low past violations and low governance scores commit violations. The evidence suggests that investors rely on a combination of observed behavior (violations) and the firm's formal governance policies to learn about the firm's true governance practices.
  • Item
    A cross-cultural examination of the impact of transformation expectations on impulse buying and conspicuous consumption
    ( 2017) Pattana Boonchoo ; Amonrat Thoumrungroje
    Building on expectation states theory, our study proposes a model to investigate cross-cultural differences between eastern (Thai) and western (American) consumers in terms of the relationships between transformation expectations (TEs) and the behaviors of (1) conspicuous consumption and (2) impulse buying. We operationalized TEs as a second-order construct, consisting of four first-order constructs, namely “self-,” “relationship,” “hedonic,” and “efficacy” transformations. Through a sociological lens, we postulated positive relationships between TEs and the two behavioral constructs. By applying multi-group structural equation analyses, we gained support for our hypotheses. The relationships, however, are stronger in the case of Thai consumers. We also discussed the results and provide implications for international marketers.
  • Item
    A cross-national study of consumer spending behavior: the impact of social media intensity and materialism
    ( 2018) Amonrat Thoumrungroje
    The ubiquity of Internet, mobile devices, and online social media platform has undeniably altered consumer lifestyles and business conduct globally. To explore the influences of social media on consumer behavior, this study applied the “self-regulation” concept and a cross-cultural conceptualization of “self” to propose a model explicating how social media intensity directly and indirectly—through materialism—impact consumers' credit overuse, conspicuous consumption, and impulse buying. Using data collected from the U.S. and South Korea, social media intensity strongly influences consumer spending in the American sample but has no effect on credit overuse behavior in the South Korean sample.
  • Item
    A Cross-Vergence of Consumer Preferences: An Empirical Study of Ethnic Subgroups in Thailand
    ( 2012) Amonrat Thoumrungroje
    Building on Bandura’s (2002) social cognitive theory and Phinney’s (1993) three-stage model of ethnic formation, this study explores the trends towards cross-vergence of consumers’ demand in the globalization era. The results from an exploratory factor analysis aiming to identify the underlying benefits that consumers of three different ethnic subgroups in Thailand have towards a non-ethnic consumer product confirms the crossvergence thesis. Thus, both sociology and psychology literature complements each other in explaining both the convergence and divergence in consumers’ preferences nowadays. Finally, this paper advocates that an in-depth understanding of cultural dynamics is crucial for scholars to advance theories as well as for practitioners to properly address consumers’ needs.
  • Item
    Developing Credit Scoring Models When Small Sample Sizes Are Available
    ( 2013) Vesarach Aumeboonsuke
    Making lending decision is an important process for financial institutions because it has a direct impact on the profits and losses of financial institutions. Therefore, financial Institutions try to develop good credit scoring models to make lending decisions. The purpose of this research is to compare the performance of the credit scoring models between multiple linear regression and logistic regression. The comparison of the credit scoring models is done through using three sets of population data generated through simulation. The odds ratio is adopted in this research as an evaluation tool. The findings of this research are useful for financial institutions especially commercial banks because they present the evidence of how well each credit scoring model can predict the credit score of the loan applicants.
  • Item
    Drivers of E-Commerce Continuance Intention: a Comparison cross Baby Boomers, Generations X, Y, and Z in Thailand
    ( 2021) Amonrat Thoumrungroje
    Globalization of trade and investments coupled with advancements in telecommunication and technology have driven growth in international business, particularly e-commerce. Focusing on business-to-consumer (B2C) e-commerce, this study investigates the drivers of post-COVID-19 pandemic e-commerce continuance intention across baby boomers, Generations X, Y, and Z in Thailand. Selfadministered online survey datafrom 851 Thai respondents obtained after the first lockdown were analyzed using multiple-group structural equation modeling. Results show that perceived risks in e-commerce have the strongest negative effect on trust, followed by utilitarian motivations while hedonic motivations only have marginal effect. From the total sample, utilitarian motivations are the most influential driver for continuance intention while trust has the least impact. Within each generation, although hedonic motivations represent the most important driver among baby boomers, utilitarian motivations are the only significant factor in Generation X, and are the most significant across Generations X, Y, and Z with trust being unimportant to Generations X and Y. Proposed relationships are marginally different between Generations X and Z, but not in other pairwise comparisons.
  • Item
    E-Service Attribute Analysis: An Application of Kano's Model
    ( 2015) Nitipan Ratanasawadwat
    The aim of the paper is to contribute to a better understanding of e-service attributes through an empirical investigation. Very limited studies have been directed towards understanding the implementing role of e-service attributes influencing customer satisfaction in online movie theatre settings. Therefore, this study apply an empirical investigation for implementing online movie theatre quality attributes using an integrated method of Kano's model to persuade customer satisfaction.
  • Item
    The Effects of Macroeconomic Factors on Stock Return of Energy Sector in Shanghai Stock Market
    ( 2012) Bing, Zhu
    The purpose of this study is to study the impact of macroeconomic factors on return of energy sector in Shanghai stock market (SEE), which are inflation rate, money supply (M2), exchange rate, industrial production, bond, exports, imports, foreign reserve and unemployment rate. The secondary data, collected from People’s Bank of China and the National Bureau of Statistics of China, were for the period beginning January 2005 to December 2011 with no any missing monthly observations. The samples are selected from Shanghai Stock Exchange (SEE) to present the energy industry. The findings reveal that exchange rate, exports, foreign reserve and unemployment rate have effects on the stock return of energy sector in Shanghai stock market.
  • Item
    Enhancing Export Performance through Proactive Export Market Development Capabilities and ICT Utilization
    ( 2019) Racela, Olimpia C. ; Amonrat Thoumrungroje
    This study examines how exporters from an emerging economy improve their performance by investigating the impact of export market dynamism, information and communication technology (ICT) utilization, and proactive export market development capabilities on export performance. Data from a self-administered mail survey of 239 Thai exporters were analyzed using structural equation modeling. Findings indicate that export market dynamism positively influences utilization of Web 2.0 and ICT network software, along with proactive export market development capabilities, which enhance export performance. However, while ICT network software fosters proactive export market development capabilities, we discovered the unfulfilled potential of Web 2.0 application.
  • Item
    Entrepreneurial Strategic Posture, International Diversification, and Firm Performance
    ( 2005) Amonrat Thoumrungroje ; Patriya Tansuhaj
    Building on the entrepreneurship, marketing and strategic management literature, we propose a conceptual model to investigate the effects of entrepreneurial strategic posture (ESP), perceived environmental uncertainty and international diversifi cation strategy on performance. The ESP‐International diversification‐Performance relationship is investigated using a contingency framework. Entrepreneurial strategic posture is postulated to influence the use of international diversifi cation strategy of entrepreneurial firms. Moreover, perceived environmental uncertainty is hypothesized to strengthen the relationship between a firm’s entrepreneurial strategic posture and international diversification strategy, which ultimately affect the firm’s performance. Propositions for further empirical studies are provided in addition to managerial and theoretical contributions.
  • Item
    Exchange Rate and Price: A Granger Causality Test of Consumer Price Index in China
    ( 2012) Bing, Zhu
    The purpose of this study is to examine a causal relationship between changes in exchange rate and changes in price level measured by CPI (consumer price index) in China by applying Granger Causality test, in which three major trading partners of China are chosen: the United States representing North America, European Union representing Europe, and Japan representing Asia. The secondary data, collected from National Bureau of Statistics of China, are for the period of January 2005 to April 2011 that spans the present managed floating exchange-rate period. The results of this study show that there is the causal relationship from changes in exchange rate (US dollar and Japanese Yen to Chinese Yuan) to changes in consumer price index in China. However, there is no evidence showing the causal relationship from changes in consumer price index to changes in exchange rate.
  • Item
    An exploratory study of consumers' attitudes towards ASEAN economic integration
    ( 2013) Panjarat Phumpradab ; Amonrat Thoumrungroje
    This research explores and compares the attitudes towards ASEAN Economic Community (AEC) between Thai and Singaporean citizens. Self-administered questionnaires were used to collect survey data of which 1,462 Thai and 647 Singaporean respondents are usable in this study. The result shows that there is a significant difference in the level of attitudes in supporting AEC between Thais and Singaporeans. By using Univariate ANOVA, we found that age, education, news consumption frequency and most watched TV program explain the differences in the level of attitudes towards AEC among Singaporeans.
  • Item
    Financial literacy and money management among the young
    ( 2020) Rattana Waranyasathid ; Htin, Khin Zar Win
    The aim of thisstudy is to analyze the relationship between financial literacy, both basicand advanced,and money managementamong the youth. This includes saving and cash management. Data sets were collected using questionnaire surveysfrom undergraduate students inBangkok. A regression analysis was conductedto test the relationship of financial literacy (the independent variable) and money management (the dependent variables). The results indicate that in the case of students who have basic financial literacy, i.e., understand inflation, theeffectsof interest rates, and how risk diversification works, there is a close relationship to money management. In contrast,in the case of studentswho have advanced financial literacy,i.e., have a solid grasp ofrisk-return tradeoffs, basic asset pricings, and knowledge in bonds, stocksand mutual funds, there is a weak relationship between literacy and money management. Thisis a rather surprising finding as it seems that more financially knowledgeable students should be more aware of how to manage money. These findings will be useful for policymakers and institutional educators to improve their curricula, which could help toimprove the financial well-being of undergraduate students.
  • Item