• Communications for Statistical Applications and Methods
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• v.30 no.2
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• pp.191-213
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• 2023

Unit distributions are frequently used in probability theory and statistics to depict meaningful variables having values between zero and one. Using convenient transformation, the unit inverse exponentiated weibull (UIEW) distribution, which is equally useful for modelling data on the unit interval, is proposed in this study. Quantile function, moments, incomplete moments, uncertainty measures, stochastic ordering, and stress-strength reliability are among the statistical properties provided for this distribution. To estimate the parameters associated to the recommended distribution, well-known estimation techniques including maximum likelihood, maximum product of spacings, least squares, weighted least squares, Cramer von Mises, Anderson-Darling, and Bayesian are utilised. Using simulated data, we compare how well the various estimators perform. According to the simulated outputs, the maximum product of spacing estimates has lower values of accuracy measures than alternative estimates in majority of situations. For two real datasets, the proposed model outperforms the beta, Kumaraswamy, unit Gompartz, unit Lomax and complementary unit weibull distributions based on various comparative indicators.

• Journal of Distribution Science
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• v.19 no.9
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• pp.101-111
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• 2021

Purpose: This study discusses and discovers the important role of fashion product coolness in affecting consumers' perceived value and consumers' value creation behavior. Accordingly, fashion product coolness exerts a direct effect on perceived value while perceived value has a direct impact on value creation. Besides, fashion product coolness has an indirect effect on value creation through perceived value. Research design, data, and methodology: This study adopts the quantitative research approach by cross-sectional technical on a sample of 319 respondents in Vietnam. PLS-SEM has been used to analyze the survey data. Results: The result indicates that the proposed direct and indirect effects are significant. Specifically, utilitarian "coolness" and hedonic "coolness" have positive impacts on perceived value. The perceived value poses an impact on consumers' value creation behavior, including customer lifetime value and influencer value. Finally, the perceived value links utilitarian "coolness", hedonic "coolness" with customer lifetime value and influencer value. Conclusions: Fashion distribution is playing an increasingly important role in the retail sector of the economy. Fashion distribution activities are greatly influenced by the perceived value of consumers. The findings are supposed to strengthen the beliefs of fashion brands and retailers in the promotion of value creation and consumers' perceived value in the field of fashion distribution.

• Journal of Distribution Science
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• v.20 no.6
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• pp.87-97
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• 2022

Purpose: In the last few decades, the ceramic industry has become an important industry for Indonesia. The resulting product must be handled properly, because if material & product handling is not carried out properly it will impact on the quality of product. Based on the logistics outsourcing research gaps in the ceramics industry to logistics service provider (LSP), this study aims to analyze the logistics service improvement of LSP in accordance with the needs of the ceramic industry to minimize logistics outsourcing risks. Research design, data and methodology: In the field study, observations, interviews and surveys related to production and logistics activities in the ceramic industry & LSP were carried out. The next step is to analyze logistics service of LSP needed by the ceramic industry. Results: The final findings obtained from this research are the LSP need to improve 1) knowledge; 2) technology capability; 3) relationships; 4) service quality; 5) innovation; 6) commitment in services. Conclusion: In order to reduce logistics outsourcing risks in the ceramic industry, LSP in Indonesia need to improve the logistics services required by the ceramic industry with a focus on six areas of improvement.

• The Journal of Asian Finance, Economics and Business
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• v.6 no.3
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• pp.247-258
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• 2019

The paper aims to examine the factors affecting brand and student decision in buying fresh milk. Combining qualitative and quantitative research methods, this study used self-completed questionnaires to investigate 520 students in Ho Chi Minh City. The results of the study show that that there are five key determinants affecting the dairy brand and student decision in buying fresh milk, including: (1) product quality, (2) fair price, (3) product promotion and customer services, (4) product convenience, and (5) reference group's attitude to the brand. In addition, it is also found that product brand has a direct and positive impact on the student decision. The finding in this study is quite different from other existing literatures in terms of the importance level of the determinants of the student decision in buying fresh milk; specifically, in deciding to buy their fresh milk, students are often interested in the promotion and customer service, the product convenience, and the reference group for the purchase, more than in the quality and price of the product. From these findings, some managerial implications are proposed for policy-makers and relevant enterprises to have appropriate policies and strategies for their business development.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.12
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• pp.455-463
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• 2021

The creative industry has an important role in economic development, but creative economy entrepreneurs still face many problems in business development and sustaining their businesses. The purpose of the study is to investigate the effect of entrepreneurship orientation, innovative product advantages, and social network quality on business performance to help companies stay competitive. The research uses a quantitative approach with the population being the owner of the creative industry in Semarang City, Central Java, Indonesia. The sampling technique used is convenience sampling, obtained as many as 126 creative industry owners. Data was analyzed using Structural Equation Modeling Partial Least Square (SEM-PLS). The findings of this study show that entrepreneurial orientation, innovative product advantage, and social network quality have a positive effect on the business performance of the creative industry in Semarang City, Central Java, Indonesia. According to the study, a company with superior resources can win the competition and achieve business sustainability. When compared to competing organizations, the benefits of resources and competitive ability will create a competitive edge. As a result, stakeholders such as the government, the corporate sector, and universities are expected to play a larger role in accelerating the growth and development of creative industries.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.16 no.5
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• pp.1561-1583
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• 2022

Context: Testing is one of the techniques that can assure the quality of software including the domain of Software Product Line (SPL). Various techniques have been deliberated to enhance the quality of SPL including Model-based Testing (MBT). Objective: The objective of this study is to analyze and classify trends of MBT in SPL covering the solutions, issues and evaluation aspects by using taxonomy form. Method: A Systematic Literature Review (SLR) was conducted involving 63 primary studies from different sources. The selected studies were categorized based on their common characteristics. Results: Several findings can guide future research on MBT for SPL. The important finding is that the multiple measurements are still open to improving current metrics to evaluate test cases in MBT for SPL. The multiple types of measurement required a trade-off between maximization and minimization results to ensure the testing method which could satisfy multiple test criteria for example cost and effectiveness at the same time.

• Bulletin of the Korean Mathematical Society
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• v.41 no.4
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• pp.739-777
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• 2004

An analogue of the Gram's inequality for n-inner product spaces is given. Further, a number of inequalities involving Gram's determinant are stated and proved in terms of n-inner products.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.1577-1580
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• 2004

This paper proposes a design and implementation of transversal adaptive digital filter using LMS (Least Mean Squares) adaptive algorithm. The filter structure is based on Distributed Arithmetic (DA) which is able to calculate the inner product by shifting and accumulating of partial products and storing in look-up table, also the desired adaptive digital filter will be multiplierless filter. In addition, the hardware implementation uses VHDL (Very high speed integrated circuit Hardware Description Language) and synthesis using FLEX10K Altera FPGA (Field Programmable Gate Array) as target technology and uses Leonardo Spectrum and MAX+plusII program for overall development. The results of this design are shown that the speed performance and used area of FPGA. The experimental results are presented to demonstrate the feasibility of the desired adaptive digital filter.

• Natural Product Sciences
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• v.26 no.1
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• pp.79-82
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• 2020

A new cinnamyl acid derivative, willughbein A (1) along with pinoresinol (2), alyterinate A (3), and scopoletin (4), were isolated from the roots of Willughbeia coriacea Wall. The structure of 1 has been determined based on HRESIMS, 1D, and 2D NMR spectral data. All of the isolates were evaluated for their cytotoxicity against three human cancer cells (HeLa, T47D, MCF-7, and P-388). Compound 3 showed moderate activity against P-388 cells with an IC₅₀ value of 3.04 ㎍/mL.

• The Journal of Asian Finance, Economics and Business
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• v.9 no.4
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• pp.357-366
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• 2022

Many factors influence brand trust, including manufacturer prestige, product value and quality, country of origin, media marketing, experience, and brand relationship. The purpose of this study is to assess the impact of the nation of origin on brand trust, using Vietnam as a case study for India's COVID-19 vaccine. A total of 407 Vietnamese people aged 18 and up participated in the survey. The findings of the study show that the nation of origin has a significant impact on brand trust. Specifically, the perceived country image has a negative effect on brand trust, the other two components of the country of origin are perceived value and perceived quality of product have a positive impact on brand trust in India's COVID-19 vaccine. Research results show that if the perceived country image of the country of production is perceived negatively, then there will be a negative impact on brand trust. According to research findings, people in Vietnam who are 30 years old or older, have steady occupations, know about India, have used Indian products in the past, and have strong brand trust in India's COVID-19 vaccinations. India needs to boost its country's image and develop communication to increase brand trust in Vietnam.