• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2015.10a
• /
• pp.45-46
• /
• 2015

The guideline on software quality assurance and human-centered design for e-Navigation was approved as IMO circular June 2015. e-Navigation software systems are characterized by a high proportion of data quality and quality in use. The purpose of this paper is to improve the quality in use of the maritime software quality assurance for the safety route guiding service. In this study, we added the stage which the stockholders such as a project manager, software developers, and end-users use the prototype that was developed based on the scenarios before the stage of design and development. Through this, we could review the requirement about the quality in use for a limited time at the beginning of the project. also we could raise understanding the concept of this project and goal system.

• The KIPS Transactions:PartC
• /
• v.18C no.6
• /
• pp.389-396
• /
• 2011

Recently, researches on the shared authentication based on single sign-on have been actively performed so as to solve the problems of current service provider-centric and isolated Internet authentications, including low usability, high cost structure, and difficulty in privacy protection. In order for the shared authentication model, where the authentications of an authentication provider are shared by several Internet service providers, to be accepted in real Internet environment, trustworthiness among users, service providers, and authentication providers on the level of authentication assurance and the level of authentication information protection is necessarily required. This paper proposes a framework for trustworthy and privacy-protected shared authentication protocol based on the user-centric operation and open trust provider network. The proposed framework is differentiated from previous works in the points that it is able to provide interoperable shared authentication services on the basis of open trust infrastructure.

• Culinary science and hospitality research
• /
• v.23 no.4
• /
• pp.203-215
• /
• 2017

The purpose of this study is to investigate the effect of educational service quality on educational satisfaction and job usability. The results of the analysis are as follows. First, based on the theoretical background, factor analysis and reliability analysis were conducted. Five factors of tangibility, responsibility, reactivity, assurance, and empathy were found in the educational service quality. In addition, it was confirmed that there was no problem as a single factor in educational satisfaction and job availability, and these factors showed high reliability and validity. Second, in the relationship between educational service quality and educational satisfaction, all five factors which education service quality factors were found to affect educational satisfaction. The higher the factor of educational service quality, the students will be able to increase their satisfaction with education, which was a degree of satisfaction with the education of contract department. Third, in the effects of educational service quality factors on job availability, tangibility, responsibility, reactivity, and assurance have no effect and empathy affects job availability. In this study, although the factors of education service quality is high except empathy, it is not possible to increase the job availability that leads to successful business results. Fourth, job availability affects educational satisfaction. Therefore, the higher the level of job availability, educational satisfaction will also increase. The following are implications of this study. First, high-quality lectures, hands-on training, and educational programs are needed and values that students pursue must continuously increase. Second, there is a need for measures to improve job availability such as the formation of curriculum related to jobs and the demand for the training courses of restaurants.

• Journal of Communications and Networks
• /
• v.13 no.5
• /
• pp.518-524
• /
• 2011

A high assurance IP encryption (HAIPE) compliant protocol accelerator is proposed for military networks consisting of red (or classified) networks and black (or unclassified) networks. The boundary between red and black sides is assumed to be protected via a HAIPE device. However, the IP layer encryption introduces challenges for bandwidth on demand satellite communication. The problems experienced by transmission control protocol (TCP) over satellites are well understood: While standard modems (on the black side) employ TCP performance enhancing proxy (PEP) which has been shown to work well, the HAIPE encryption of TCP headers renders the onboard modem's PEP ineffective. This is attributed to the fact that under the bandwidth-on-demand environment, PEP must use traditional TCP mechanisms such as slow start to probe for the available bandwidth of the link (which eliminates the usefulness of the PEP). Most implementations recommend disabling the PEP when a HAIPE device is used. In this paper, we propose a novel solution, namely broadband HAIPE-embeddable satellite communications terminal (BHeST), which utilizes dynamic network performance enhancement algorithms for high latency bandwidth-on-demand satellite links protected by HAIPE. By moving the PEP into the red network and exploiting the explicit congestion notification bypass mechanism allowed by the latest HAIPE standard, we have been able to regain PEP's desired network enhancement that was lost due to HAIPE encryption (even though the idea of deploying PEP at the modem side is not new). Our BHeST solution employs direct video broadcast-return channel service (DVB-RCS), an open standard as a means of providing bandwidth-on-demand satellite links. Another issue we address is the estimation of current satellite bandwidth allocated to a remote terminal which is not available in DVBRCS. Simulation results show that the improvement of our solution over FIX PEP is significant and could reach up to 100%. The improvement over the original TCP is even more (up to 500% for certain configurations).

• Imaging Science in Dentistry
• /
• v.53 no.3
• /
• pp.217-220
• /
• 2023

Purpose: This pilot study was conducted to evaluate half-value layer (HVL) measurements obtained using a semiconductor dosimeter for intraoral radiography. Materials and Methods: This study included 8 aluminum plates, 4 of which were low-purity (less than 99.9%) and 4 high-purity (greater than 99.9%). Intraoral radiography was performed using an intraoral X-ray unit in accordance with the dental protocol at the authors' affiliated hospital: tube voltage, 60 kVp and 70 kVp; tube current, 7 mA; and exposure time, 0.10 s. The accuracy of HVL measurements for intraoral radiography was assessed using a semiconductor dosimeter. A simple regression analysis was performed to compare the aluminum plate thickness and HVL in relation to the tube voltage (60 kVp and 70 kVp) and aluminum purity (low and high). Results: For the low-purity aluminum plates, the HVL at 60 kVp (Y) and 70 kVp (Y) was significantly correlated with the thickness of the aluminum plate (X), with Y=1.708+0.415X (r=0.999, P<0.05) and Y=1.980+0.484X (r=0.999, P<0.05), respectively. Similarly, for the high-purity aluminum plates, the HVL at 60 kVp (Y) and 70 kVp (Y) was significantly correlated with the plate thickness(X), with Y=1.696+0.454X (r=0.999, P<0.05) and Y=1.968+0.515X (r=0.998, P<0.05), respectively. Conclusion: This pilot study examined the relationship between aluminum plate thickness and HVL measurements using a semiconductor dosimeter for intraoral radiography. Semiconductor dosimeters may prove useful in HVL measurement for purposes such as quality assurance in dental X-ray imaging.

• Journal of Korean Society for Quality Management
• /
• v.39 no.1
• /
• pp.15-23
• /
• 2011

The biggest change in the current medical service market is the shift from producer-based approach to customer-based approach. Thus, there is a high necessity for an introduction of market-oriented and customer-oriented marketing activities in medical institutions. Especially, revisitation and positive word-of-mouth of customers are the most effective marketing methods of consistently obtaining customers and drawing new loyal customers. Hence, the factors influencing the reuse of medical services and word-of-mouth are demonstrated using SERVQUAL, and the results show that the service factors influencing reuse intentions on medical services are assurance, responsiveness, and tangibles and the factors strengthening word-of-mouth are empathy and assurance on the services provided by medical institutions. This study has determined that revistation and word-of-mouth of customers are not only influenced by satisfaction on medical services but by the quality itself as well. Therefore, medical service providers need to pursue standardized strategies in order to enhance the quality of medical services simultaneously in addition to simply increasing the customer satisfaction level.

• Journal of the Korean Society of Costume
• /
• v.56 no.7 s.107
• /
• pp.46-57
• /
• 2006

The purpose of this study is to analyze whether perceived utilitarian value and service qualify have an effect on repurchase intention of fashion merchandise in internet shopping. A survey was conducted from June 20 to July 30 in 2003, among married women aged in their 20s and 30s, on their purchase experience of fashion merchandise from internet shopping malls. The survey was conducted over the internet with 306 subjects. The statistical analysis methods were frequency analysis, reliability analysis, factor analysis, and multiple regression analysis. The results of this study were as follows. 1. A married women aged in their 20s and 30s were shown to high-purchasing on nightgown, underwear, women's pants, casual wear through internet shopping. Their perceived utilitarian value had an effect on repurchase intention of fashion merchandise in internet shopping. 2. The service quality factors were determined to be site reliability, site reactivity, order assurance, order easy, site organization. Service quality factors of site reactivity, order assurance, order easy, site organization had an effect on repurchase intention of fashion merchandise in internet shopping.

• Journal of Arbitration Studies
• /
• v.21 no.2
• /
• pp.133-156
• /
• 2011

This paper is to analyze the legality in which the fraud rule allow the issuer of L/C or a court to disrupt the payment to the beneficiary under the deferred payment credit when the nominated bank for deferred payment undertaking made prepayment or negotiation before the maturity date and fraud is identified to be involved. Since the function of commercial L/C is to provide absolute assurance of payment to a beneficiary, the fraud rule based on fraud exception has been known as the negative factor which lead to the disruption of "principle of independence & abstraction" under the commercial L/C transactions. As a result, the fraud rule is necessary to limit the activities of fraudsters, but its scope must be carefully circumscribed so as not to deny commercial utility to an instrument that exists to serve as an assurance of payment. But the fraud itself has not been firmly established because it is inherently pliable in its concept. There are numerous contents to describe the application of fraud to the L/C transactions as a standard such as egregious fraud, intentional fraud, L/C fraud(omitted here), flexible fraud, and constructive fraud. And so the standard applicable to the commercial transaction as the fraud rule would be high or low depending upon the various standards of fraud.

• The Journal of Asian Finance, Economics and Business
• /
• v.6 no.1
• /
• pp.177-185
• /
• 2019

Service quality is still a new concept to those who works in shipping lines services since it has not been identified as a mandatory factor to increase competitiveness. Most carriers are currently offering services at the same level of price, transit time, equipment, etc. Thus offering a high quality service is the best way for a carrier to differentiate itself from its competitors in the market. The research aims to conduct an assessment on service quality at Wan Hai Lines (WHL) outbound services based on the SERVQUAL model, form of dimension-by-dimension analysis. This study was based on a survey of 135 people. The outcome is the service quality of WHL outbound services can be identified by three dimension(s): Empathy and Responsiveness, Assurance, and Reliability. It would help management to have an overall picture about the current service quality, and to find solutions to improve service quality following the recommendations. WHL managers need to recognize that "Reliability" has the strongest influence on customers' expectations, then come "Empathy and Responsiveness" and "Assurance". Therefore, board of managers should spend time looking carefully at each of the three dimensions, especially for the biggest gap between perceptions and expectations of three dimensions as well. Then the recommendations were raised.

• The KIPS Transactions:PartD
• /
• v.17D no.6
• /
• pp.423-430
• /
• 2010

As software becomes large-scale and complicated, the need for Quality Assurance and management is increased and software testing is becoming more important. The main aims of software testing are not only detecting and handling the defects in the system but also investigating and managing the present system. But automatic testing tools require lots of time and efforts to detect and manage the risk in the system because test-cases used in the general automatic testing tools have the simply static information. In this thesis, the dynamic management technique for weighted testcases is designed to test the high-risk testcases preferentially by giving the testcases dynamic weight.