• Journal of Intelligence and Information Systems
• /
• v.12 no.3
• /
• pp.83-93
• /
• 2006

This paper is wireless location awareness technology using RFID. We investigates the Location of the received Signal strength reported by RF Analyses of the data are performed to understand the underlying features of location fingerprints. The system is performed factors the extreme environmental Emit signal, which consists of a unique 5000 Terminals. The Location Service have become very popular in many service industries, purchasing and distribution logistics, industry, manufacturing companies and a parking place. The Technically optimal Solution would be the storage of Intelligence information in the most common form of electronic data-carrying device in use in everyday life is the smart card based upon a contact field (telephone smart card, bank cards). The method of an indoor positioning experiment system is compared using measured Location data and a charge of service. The result of research showed the following: first, to check out the mechanism between benefit of system installation and operation of Active RFID. Second, it contributed on indoor wireless location intelligence system efficiency.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2019.11a
• /
• pp.197-198
• /
• 2019

Competition between global ports is intensifying as the number of calling ports has decreased due to the growth of ship size and the implementation of global environmental regulations has begun. Global ports are pushing for a strategic and concrete transition to smart ports in order to secure port competitiveness in the future. In Korea, however, the government plans and projects for promoting smart ports have yet to materialize, and related papers and research are lacking. In this paper, the concept of smart port was established, and the current status of technology and introduction of smart ports was analyzed. In addition, the concept of Smart Port Index(SPI) was presented in order to objectively and quantitatively compare the level of smartness. As a result,

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.11 no.1
• /
• pp.536-551
• /
• 2017

With the advancement and deployment of leading-edge telecommunication technologies for sensing and collecting, computing related information, Cloud of Things (CoTs) has emerged as a typical application platform that is envisioned to revolutionize the daily activities of human society, such as intelligent transportation, modern logistics, food safety, environmental monitoring, etc. To avoid any possible malicious attack and resource abuse, employing hash functions is widely recognized as one of the most effective approaches for CoTs to achieve message integrity and data authentication. The Whirlpool hash function has served as part of the joint ISO/IEC 10118-3 International Standard by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). In this paper, we propose an effective differential fault analysis on Whirlpool in the byte-oriented random fault model. The mathematical analysis and experimental results show that 8 random faults on average are required to obtain the current 512-bit message input of whirlpool and the secret key of HMAC-Whirlpool. Our work demonstrates that Whirlpool and HMAC-Whirlpool are both vulnerable to the single byte differential fault analysis. It provides a new reference for the security analysis of the same structure of the hash functions in the CoTs.

• Journal of Korean Society for Geospatial Information Science
• /
• v.17 no.1
• /
• pp.113-120
• /
• 2009

Through the automatic sensing of the environment, USN technology can give the best services. In this work, we have developed an active RFID system and examined its performance. By implementing it into water quality sensors, we constructed a system that can detect diverse indoor/outdoor environment and provide information about the pollution level obtained from the temperature and PH sensors. Our RF system had an internal Print-on-PCB antenna for the miniaturization of the tag. We used a RF transceiver CC2510 chipset of TI company to realize the active RFID function. By using RSSI constants obtained, we performed the evaluation of real time location accuracy with a software written in Labview. Among 10 arbitrary locations, we obtained average measurement errors of 1.69 m in x axis and 1.66 m in y axis. This technology can be applied to logistics, environmental monitoring, prevention of missing children and various applications.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.25 no.2
• /
• pp.207-218
• /
• 2017

Improving fuel consumption, particularly that of commercial vehicles, has become a global concern. The reduction in logistics cost has been a key issue in efforts to improve fuel economy and efficiency of transportation equipment. Typical technologies for reducing reduce fuel usage include air resistance reduction technologies, tire rolling resistance technologies, and idle technologies among others. Air resistance technology is a highly effective method that can be easily applied in a short period. As with air resistance technology, several devices involving side skirt, boat tail and gap fairing have been developed based on an analytical 3-D modeling technique for reducing air resistance attributed to the vehicle configuration. The devices were on a 45 feet tractor-trailer and the emission test was done using PEMS equipment. Fuel economy was evaluated by introducing several devices to reduce outer air resistance. The test was conducted by changing the experimental method of SAE J1321 Joint TMC/SAE Fuel Consumption Test Procedure - Type II test. As a result, air resistance decreased by at least 15 % and fuel economy improved by at least 13 %. This study sought to reduce greenhouse gas and improve fuel economy by applying several devices to a test vehicle to lower air resistance.

• Journal of the Korean Society for Railway
• /
• v.19 no.1
• /
• pp.97-108
• /
• 2016

Over 80% of Korea's cargo transport relies on public roads. Such over-reliance has created a range of social problems including environmental damage. Korea thus faces an urgent need to establish an alternative mode of cargo transportation. In view of the changing international logistics environment, railway is clearly a superior mode of transport. The prerequisite task today for Korea is to enhance the competitiveness of inland railway by switching to railway and spurring new demand for cargo. This study examines inland railway cargo transport from the demand perspective. Specifically, through the use of a survey, the study identifies key factors influencing the decisions of container shippers regarding the use of railway for cargo transport. The survey responses were statistically tested using Smart PLS structural equation modeling. The results indicate that attitude toward railway use had the strongest influence on choice, while the key variable affecting attitude formation was cost.

• Journal of Environmental Policy
• /
• v.8 no.3
• /
• pp.181-206
• /
• 2009

The purpose of this paper is to analyze economic adequacy by estimating the benefit-cost for bird eco-park, eco-center, eco-river, and eco-waterway, which will be built in the new town of Kimpoo, Yangchon. This paper attempts an economic analysis for the development of an eco-friendly new town. The rates of B/C (benefit-cost) in all scenarios are over one. Especially, the B/C rate of the eco-center is the most efficient of the four eco-facilities by 5.02 - 3.75. In addition, the construction costs of the five eco-facilities are assumed to be 50 percent higher, though their economic soundness is maintained. This paper implies that providing ecological variety is one of the core components in constructing housing complexes and suggests that the construction of housing be harmonized with zero-carbon and energy efficient methods.

• Journal of Navigation and Port Research
• /
• v.33 no.5
• /
• pp.345-352
• /
• 2009

The issues of environmental pollution and labor safety on ship recycling in the undeveloped countries such as India, Bangladesh, etc have been proclaimed. For this, IMO has been actively participated in resolving such problems since 1998 and then finally the International Convention for the Safe and Environmentally Sound Recycling of Ships is going to be adopted in this year. The convention provides the design, construction, operation and preparation of ships in order to facilitate safe and environmentally sound recycling as well as the safe and environmentally sound operation of ship recycling facilities. Therefore, the purposes of this study are to introduce the major contents of ship recycling convention and its time of entry into force and to analyse stakeholders' strategies toward it so that Korea will have a better position for the establishment of a mechanism regarding regulation stringency on environmentally sound ship recycling.

• Journal of Korea Port Economic Association
• /
• v.27 no.2
• /
• pp.85-110
• /
• 2011

The purpose of this study is to evaluate the social costs of inland trucking and maritime transport between Kwangyang Port in Korea and the Great Lakes in US. Also, this study compares these social costs each other, and finds the way how to internalize them for the efficiencies of national logistics policies. This study uses the Contingent Valuation Method to evaluate the social costs for the two transport modes in each country. The final result is that the social cost difference between inland trucking and maritime transport around US Great Lakes area is not so significant that there are not many chances to enhance the maritime transport in the region. However, in case of Korea, there is significant difference in social costs between the two transport modes, so that Korea government may have a lot of chances to improve the seaborne trade by way of various internalization policies.

• Journal of the Korean Society for Railway
• /
• v.17 no.6
• /
• pp.423-432
• /
• 2014

The purchasing behavior of consumers is related to service quality and corporate social responsibility (CSR). Therefore, CSR is recognized as an important factor in company strategies. This study determines the relationship between the CSR activities of KORAIL and the reuse intention and recommendation intention of the consumer. CSR is composed of economic, legal, philanthropic, ethical, and environmental responsibilities. In the results of the structural equation modeling analyses, legal responsibility and economic reliability affect the reliability of KORAIL and this reliability affects the customers' reliability and loyalty. This paper proposes a compliance program, wagon safety information, customized tour packages, and communication strategy that will increase customer's reliability and loyalty.