• Information Systems Review
• /
• v.10 no.2
• /
• pp.309-327
• /
• 2008

This research is a byproduct of a project initiated by a major airport in Korea. The airport aimed to enhance airside safety and weighed a few IT options that may strengthen its current safety practices. In order to satisfy requirements unique to the airport and to inherit existing legacy systems, a PCS-based mobile database system was proposed. We first discuss technical aspects of the system as well as design issues in mobile systems before we compare two specific alternatives for transactional service handoff. A simulation study comparing two types of coordination follows before we present a scheme that manages transaction processing and locating service in mobile environments. Finally, we discuss the limitations of the scheme from the perspectives of the airport in question along with other research issues.

• Journal of Advanced Navigation Technology
• /
• v.4 no.2
• /
• pp.171-181
• /
• 2000

In this paper, we propose an AVLS(Automatic Vehicle Location System) using the DSRC(Dedicated Short Range Communication) which adopts a radio communication tool between RSE(Road-Side Equipment) and OBE(On-Board Equipment) on a vehicle and uses the ISM bandwidth of 5.8GHz radio frequency. Typical AVLS uses the sensors for detecting the vehicle, but the DSRC system is developed for supporting various services such as the position of vehicle, clearance, vehicle to vehicle communication, collection and distributions of traffic and road information. Also, for fast processing, we design three-layer configuration of physical(L1), data link(L2), and application layer(L7), which simplifies the seven-layer configuration. We suggest the proposed system as a new technology for replacement of typical wireless communication system and sensors for AVLS.

• Journal of Advanced Navigation Technology
• /
• v.15 no.6
• /
• pp.1220-1227
• /
• 2011

According to the development of IT technology, life itself is becoming the change to Knowledge-based systems or information-based systems. However, the development of IT technology, the cyber attack techniques are improving. And DDoS a crisis occurs frequently, such as cyber terrorism has become a major data leakage. In addition, the various paths of attack from malicious code entering information in the system to work for your company for loss and damage to information assets is increasing. In this environment, the need to preserve the organization and users of information assets to perform ongoing inspections risk management processes within the organization should be established. Processes and managerial, technical, and physical systems by establishing an information security management system should be based. Also, we should be introduced information security product for protecting internal assets from the threat of malicious code incoming to inside except system and process establishment. Therefore we proposed enterprise and government information security enhancement scheme through the introduction of information security management system and information security product in this paper.

• Journal of the Korea Society for Simulation
• /
• v.27 no.2
• /
• pp.71-81
• /
• 2018

Forklifts in a shipyard lift and transport heavy objects. Tasks occur dynamically and the rate of the task occurrence changes over time. Especially, the rate of the task occurrence is high immediately after morning and afternoon business hours. The weight of objects varies according to task characteristic, and a forklift also has the workable or allowable weight limit. In this study, we propose an online forklift dispatching algorithm based on nearest-neighbor dispatching rule using minimal cost assignment approach in order to attain the efficient operations. The proposed algorithm considers various types of forklift and multiple jobs at the same time to determine the dispatch plan. We generate dummy forklifts and dummy tasks to handle unbalance in the numbers of forklifts and tasks by taking their capacity limits and weights. In addition, a method of systematic forklift selection is also devised considering the condition of the forklift. The performance indicator is the total travel distance and the average task waiting time. We validate our approach against the priority rule-based method of the previous study by discrete-event simulation.

• Spatial Information Research
• /
• v.19 no.5
• /
• pp.53-62
• /
• 2011

Recently environmental pollution and resource depletion have been rapidly progressing in the world. Construction Industries discharge tones of wastes and consumes heavy resource as compared with the production activities of other industries, so it is the main reason of increasing of the Earth's environment. In Korea, as people become aware of the need of technical and institutional infrastructure for the recycling of construction wastes, they manage Allbraro system which is Total Management System in the wastes. Therefore, they promote the handling of standardized information, processing construction waste of transparency procure and promotion of the efficiency of task about the disposal of occurrence and movement of real-time construction waste. However, objective information for dismantling building did not construct in the organization of the system, so the emission of system randomly produces and discharges information of the waste. Because of that reasons, the exact value of waste abandonment is difficult to measure and recycling after waste disposal has the limit point. Therefore, in this study, advantages and disadvantages of the existing waste management system are analyzed, and we improved solution of construction building and environment of the city when BIM / GIS are utilized.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.21 no.3
• /
• pp.35-47
• /
• 2018

Tree height is information that is used as a parameter for variety of tasks related to forests. Specifically, customized topics related to forests such as afforestation map are also used for production. In order to calculate tree height information, a field survey or drawing was using aerial photographs. However, there is a problem that is costing a lot of time and money. Therefore, it was suggested to calculate tree height using aerial photographs taken every two years. Thus, the method for calculating tree heights was validated by unmanned aerial photogrammetry, and tree heights were calculated using outputs generated by unmanned aerial photogrammetry applied to the unmanned aerial photograph and Aerial photograph DB. The comparison of calculated tree heights shows that the measures proposed in this study are efficient. and We expect to improve the usability of aerial photographs DB.

• Journal of the Korea Society of Computer and Information
• /
• v.12 no.6
• /
• pp.177-185
• /
• 2007

Lately, it is a trend that diffusion of Mobile Information Appliance that do various function by development of IT technology. There is function that do more convenient and efficient exchange information and business using mobile phone that is Mobile Information Appliance, but disfunction that is utilized by pointed end engineering data leakage, individual's privacy infringement, threat, etc. relationship means to use mobile phone is appeared and problems were appeared much. However, legal research of statute unpreparedness and so on need research and effort to prove delete, copy, integrity of digital evidence that transfer secures special quality of easy digital evidence to objective evidence in investigation vantage point is lacking about crime who use this portable phone. It is known that this Digital Forensic field is Mobile Forensic. In this paper. We are verify about acquisition way of digital evidence that can happen in this treatise through mobile phone that is Mobile Forensic's representative standing and present way to prove integrity of digital evidence using Hash Function.

• Convergence Security Journal
• /
• v.9 no.2
• /
• pp.49-58
• /
• 2009

In medical Institution, Electronic Health Record (EHR) is "must access information" to medical staff considering it as medical information. However, this unnecessary exploration of personal information must be treated confidentially because the information is highly related to other's private concerns. It is necessary that medical workers should be also restricted to their access to EHR depending on their roles and duties. As the result, this article explains that "EHR access control will be executed by differentiating authorized medical staff from non medical-related staff as well as EHR access will be only permitted to authorized medical staff depending on their work status conditions. By using Advanced RBAC model on medical situation, we expect to minimize unnecessary leak of EHR information; especially, emergency medical care is needed, access control is highly required depending on a person in charge of the cases or not, and restricted medical information defined by the patient one-self is only allowed to be accessed.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.11 no.1
• /
• pp.113-118
• /
• 2016

This study found that there are problems in sending mails at the postal service reception desks and proposes a system which transmits address information to POSNET(the terminals at post office reception) without the use of an additional security system based on address information which is stored in the terminals of mobile phones. The system proposed transforms the information of users into two-dimensional barcode(QR code) of the POSNET and a number of address information is texturized and transmitted to the POSNET with the use of how to read QR code and LAN such as bluetooth. When the system proposed is connected to the postal reception system, it can create and output mail addresses for mobile computers automatically and contribute to better performance for the post office reception clerks and better economic results.

• 한국HCI학회:학술대회논문집
• /
• 2008.02b
• /
• pp.424-429
• /
• 2008

The purpose of this research is to suggest a competitive design by producing functions and elements needed to users based on a research about device use and needs according to user behavior. We proceeded to the research aiming a design smart document-editing device design which can be used for business regardless of place (at office or home), targeting reasonable and individualistic users from twenties to thirties. By some ways for that, first, we selected target users and based on user interviews to get enough understanding for them. Second, we produced user needs by some troubles after establishing persona and deciding target users on the basis of the research. Third, we designed form-factor visualizing work, organized design spec by the produced concept, and we developed interaction design on the basis of this scenario. Fourth, we made paper prototype and conducted user test. As a result, our final design emphasizes mobile ability and simplicity to be suitable for reasonable individualism and is able to efficiently work input, editing, and output without complicated procedure. We could also prove the validity of the design through usability test.