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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of Advanced Navigation Technology
Journal Basic Information
Journal DOI :
The Korea Navigation Institute
Editor in Chief :
Volume & Issues
Volume 15, Issue 6 - Dec 2011
Volume 15, Issue 5 - Oct 2011
Volume 15, Issue 4 - Aug 2011
Volume 15, Issue 3 - Jun 2011
Volume 15, Issue 2 - Apr 2011
Volume 15, Issue 1 - Feb 2011
Selecting the target year
The improvement of maritime data communication systems for e-Navigation
Jung, Sung-Hun ; Yang, Gyu-Sik ; Jeong, Gi-Ryong ; Park, Dong-Kook ; Kim, Jeong-Chang ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 939~945
We show a new scheme and implementation of maritime data communication systems for GMDSS ship which performs e-Navigation and removes the functional limitation of those systems through comparing to service fee, call processing reliability, and bit rates of all of those systems within communication range at sea. We confirmed available each frequency band communication and application services at sea by experimental result with proposed new system, MF/HF band being useful to a short text message service, VHF band to 9600bps email service, Fleet Broadband Maritime Satellite system to one or more Mbps multimedia service each.
The Analysis of Voice Communication Traffic based on ADS-B Providing the Aiming Altitude Parameter
Hyun, Jung-Wook ; Gil, Hyun-Cheol ; Ahn, Dong-Mhan ; Hong, Gyo-Young ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 946~952
In term of inaccuracy of information and increasing channel occupancy time, the use of voice communication in Air Traffic Control has many problems. In order to improve it, ICAO proposed digital communication and ADS-B system that is more effective for voice communication in ATC. For improvement of effectiveness to add additional parameter to designated ADS-B In-Out data group, many studies being performed. In this paper, we analysis voice communication for reduce the communication traffic in ATC and simulate to add aiming altitude parameter for comparative effect analysis of communication traffic between pilot and controller. The result of the analysis were successfully validated that reduction of communication traffic in ADS-B environments.
Anomaly Detection of IGS Predicted Orbits for Near-Real-Time Positioning Using GPS
Ha, Ji-Hyun ; Heo, Moon-Beom ; Nam, Gi-Wook ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 953~961
IGS (International GNSS Service) predicted orbits contained in IGS ultra-rapid orbits is suitable for real-time or near-real-time precise positioning. In this paper, we analyzed orbit anomalies of the IGS predicted orbits and detected the anomalies NANU (Current Notice Advisories to NAVSTAR Users) messages and IGS BRDC (Broadcast Ephemerides). As a results, the orbit anomalies of the predicted orbits were observed 93 times in 2010. In case of using the NANUs, we could get detection performance of 88% about the IGS predicted orbits's anomalies. And we could achieve 95% detection performance when the NANUs and BRDCs were used together.
A Study of DOA estimation based on TDOA/AOA for jammer localization
Choi, Heon-Ho ; Jin, Mi-Hyun ; Lim, Deok-Won ; Nam, Gi-Wook ; Park, Chan-Sik ; Lee, Sang-Jeong ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 962~969
This paper proposes the DOA estimation method based on TDOA/AOA for jammer localization method in GBAS environment. The proposed method can effectively estimate DOA of jamming signal as the range for DOA estimation is reduced remarkably by using DOP and 1st approximate solution using TDOA measurements only. Through the proposed method, more precise DOA can be obtained and the performance of jammer localization is increased simultaneously. Also, the effectiveness of proposed method will be confirmed through the simulated results.
A Study on FIS-B Design and Implementation for Providing Air Traffic Informations
Cho, Tae-Hwan ; Song, In-Seong ; Jang, Eun-Mee ; Yoon, Wan-Oh ; Choi, Sang-Bang ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 970~976
According to CNS/ATM, a new concept of navigation system, ADS-B systems are being built in the field of surveillance. FIS-B is one of the key elements of ADS-B, and also provides various flight informations, weather informations to the aircraft. In this paper, we reviewed the FIS-B standard and analyzed performance requirements. And then we designed and implemented FIS-B. In this simulation, we showed performance of FIS-B. And this research is very useful to the future work.
Models for Measurement of Efficiency of Free Flight Separation Assurance
Lee, Dae-Yong ; Young, Kang-Ja ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 977~985
Airborne separation assurance is a key requirement for Free Flight Airspace operations, This paper study the feasibility of airborne separation assurance for free flight Airspaces operations by evaluating the efficiency measurement models. Three qualitatively different methods are utilized; one based Ground and Air conflict probability model, other based Dynamic Density model. the other based Direct operating cost model. The evaluation is Direct Operating Cost model and Two metrics are utilized for the efficiency measurements; airborne separation assurance performed quite well in the Free Flight evaluation; (1) 2 scenario of the conflict situations are resolved; (2) The MD-80 flight peformed separation assurance and efficiency, Not only appling for geometric method algorithm is more efficiently than potential method, but also the most efficiently geometric combined method.
Improvement of the Avoidance Performance of TCAS-II by Employing Kalman Filter
Jun, Byung-Kyu ; Lim, Sang-Seok ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 986~993
In this paper we consider the problem of the existing TCAS-II systems that fail to be satisfactory solution to mid-air collisions (MACs) and near mid-air collisions (NMACs or near misses). This is attributed to the fact that the earlier studies on the collision avoidance mainly have focused on determination logic of avoidance direction and vertical speed, reversal of the avoidance direction, multiple aircraft geometry, and availability in certain air spaces. But, the influence of sensor measurement errors on the performance of collision avoidance was not properly taken into account. Here we propose a new TCAS algorithm by using Kalman filter instead of '
' tracker to improve the avoidance performance under the influence of barometric sensor errors due to air-temperature, pressure leaks, static source error correction, etc.
Improvement of ADU(Antenna Distribution Unit) for RF signal Stability of Glide Path
Lee, Chang-Woo ; Lee, Seung-Tae ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 994~999
This paper explains how existing electrical ADU(Antenna Distribution Unit) has been improved into a mechanical ADU. Generally the mechanical ADU has stabilized Glide Path which provides a RF signal to the aircraft for safe landing and it has solved the issue of phase shift and power distribution ratio change which can be occurred during long-term use. Besides it has been certified by Flight check and operating several airports in oversea as well as in korea.
The study on the effectiveness of smart home network service for IT underprivileged people and growth service model
Kim, Byoung-Soo ; Ji, Yeong-Soo ; Han, Kyeong-Seok ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1000~1007
Home Networking will be implementing the interactive network by home appliances over wireless/wireline network framwork. That is, Home appliances, which are being operated within home space configure the network through wireline/wireless network infrastructure for interworking and interacitive services by external internet access. Based on home networking, smarthome is home space where can use automatic telecommunication and interactive service by home appliances. we can call smarthome based on home networking infrastructure as the conceptual gateway for evolving future converged space like u-city. From simple home control service to home automation service over home networking infrastructure, smarthome service is evolving to up-to-date intelligent life environment in growth of IT technology. however, its service model development was based on supplier-centered based on advanced IT technology. because of this situation, smarthome service has not been acknowledged IT underprivileged people as well as IT early-adaptor. so, this research paper will consider and try to find out what will be the feasible factors to make the best service for IT underprivileged people.
Fractal Microstrip patch Antenna Design and Fabrication for WLAN/WiMax Applications
Kim, Kab-Ki ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1008~1014
In this paper, multi-band fractal microstrip patch antenna which is possible for WLAN band and WiMax band is designed and made. For multi-resonance of developed antenna, resonance frequency, impedance matching, polarity and reflection pattern can mad perfectly, then to make satisfied multi-independent frequency three kind of half circle fractal patch is inserted. In the situation continuously happening half circle in designed structure, antennas one of half-circle band is shown.
Cluster-based P2P scheme considering node mobility in MANET
Wu, Hyuk ; Lee, Dong-Jun ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1015~1024
Mobile P2P protocols in ad-hoc networks have gained large attention recently. Although there has been much research on P2P algorithms for wired networks, existing P2P protocols are not suitable for mobile ad-hoc networks because they do not consider mobility of peers. This study proposes a new cluster-based P2P protocol for ad hoc networks which utilizes peer mobility. In typical cluster-based P2P algorithms, each cluster has a super peer and other peers of the cluster register their file list to the super peer. High mobility peers would cause a lot of file list registration traffic because they hand-off between clusters frequently. In the proposed scheme, while peers with low mobility behave in the same way as the peers of the typical cluster-based P2P schemes, peers with high mobility behave differently. They inform their entrance to the cluster region to the super peer but they do not register their file list to the super peer. When a peer wishes to find a file, it first searches the registered file list of the super peer and if fails, query message is broadcasted. We perform mathematical modeling, analysis and optimization of the proposed scheme regarding P2P traffic and associated routing traffic. Numerical results show that the proposed scheme performs much better than or similar to the typical cluster-based P2P scheme and flooding based Gnutella.
The Study of the Peer-to-Peer Communication System for a UAV Navigational Monitoring Using a HSDPA
Kim, Ho-Gyun ; Song, Jun-Beom ; Song, Woo-Jin ; Kang, Beom-Soo ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1025~1033
This paper presents a realization of a peer-to-peer communication system for a UAV navigational monitoring using a commercial HSDPA(High Speed Download Packet Access) mobile communication device. The realized system consists of a communication server, an air data terminal and multiple ground monitoring devices, where the server transfers navigational data from a UAV to multiple monitoring devices in real-time with commercial HSDPA modem. Through ground and flight tests, data were obtained to observe the realized system. Test results show that, depending on communicational environment, about 300msec delay, congestion and packet-loss between air data terminal and ground monitoring devices. Nevertheless, through high-speed long range test on a ground vehicle and altitude test with a UAV flight, the feasibility of a UAV navigational monitoring system was observed.
A Management method of Load Balancing among Game Servers based on Distributed Server System Using Map Balance Server
Kim, Soon-Gohn ; Lee, Nam-Jae ; Yang, Seung-Weon ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1034~1041
Generally, In distributed online game server system, game maps are processed separately by means of dividing into several unit blocks. But the keeping normal distribution of user in game map is very difficult because preferences of game users are not same according to individual user's private character. For this reason, if the huge number of users concentrate on particular region of same game map at once, the game server exceed their threshold so that the system can be getting down. Conversely, the efficiency of system goes down considerably because the game server must perform map processing continuously even under user_empty situation. To solve this problem, in this paper, we propose a Map management method to control relatively normal distribution of users in game maps using Map Balance Server. In suggested model, we can reduce the load of game servers by means of turn off the game map processing temporary when a server is under user_empty situation. we also can maximize server performance by means of redistribution of map processing load among servers.
A Study on the ZP-OFDM System Robust to Symbol Timing Offset
Chung, Jae-Pil ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1042~1046
In this paper, we analyze the STO (Symbol Timing Offset) problem in conventional ZP-OFDM (Zero Padding-Orthogonal Frequency Division Multiplexing) systems and propose a robust ZP-OFDM system with bi-directional overlap-add scheme to overcome the problem. The proposed ZP-OFDM system is able to preserve the orthogonality between subcarriers and reduce the interference from other ZP-OFDM symbols due to the BOA scheme, which exploits both ZP intervals of the previous and the current ZP-OFDM symbols, even though serious STOs result from inaccurate symbol timing synchronization. Simulation results verify that the proposed ZP-OFDM system is superior to the conventional ZP-OFDM system.
A Study on Mobile Virtual Training System using Augmented Reality
Kim, Yu-Doo ; Lee, Seon-Ung ; Moon, Il-Young ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1047~1052
Various services are created using mobile networks after mobile devices such as smart phones and tablet PCs are propagated rapidly. However, the contents of smart devices are not enough diversity because they depend on games and messaging services primarily. In this paper, we described the study have progressed based on mobile devices and networks using augmented reality technologies about virtual education system.
Improvement Transmission Reliability between Flight Type Air Node Using Concatenated Single Antenna Diversity
Kang, Chul-Gyu ; Kim, Dae-Hwan ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1053~1058
In this paper, we propose a concatenated single antenna diversity system to assure the data transmission reliability between flight type air nodes which move according to their atypical orbit, then analyze its performance. The proposed system achieve a diversity gain using single antenna and a coding gain from convolutional code simultaneously. Simulation result about the bit error rate(BER) of the proposed system shows that its BER performance is about 9.5dB greater than convolutional code at
and about 14dB greater than space time block code at
which has a full diversity gain. In addition, compared with space time trellis code with diversity gain and coding gain, the proposed system shows the better 4dB at a BER of
. Therefore, it is necessary that concatenated single antenna diversity should be adopted to the reliable data transmission of flight type air nodes.
Performance Evaluation of WAVE Communication System for the Next-Generation ITS
Lee, Se-Yeun ; Jeong, Han-Gyun ; Shin, Dae-Kyo ; Lim, Ki-Taeg ; Lee, Myung-Ho ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1059~1067
Next-Generation ITS environment requires high-speed data packet transmission, security, authentication, and hand-over supportable for driving vehicle on road by installing RSEs and OBUs. Therefore, wireless communication technology for next-generation ITS services are advancing to 200km/h maximum speed supportable, 1km communication radius, minimum 10Mbps hish-speed datarate for multimedia data(such as text, images, movie clips and so on) supportable, high reliability. In this paper, we implemented WAVE communication system which based on IEEE 802.11p PHY/MAC and evaluated that the system meets next-generation ITS environments.
Performance Analysis of STBC System Combined with Convolution Code fot Improvement of Transmission Reliability
Shin, Hyun-Jun ; Kang, Chul-Gyu ; Oh, Chang-Heon ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1068~1074
In this paper, the proposed scheme is STBC(space-time block codes) system combined with convolution code which is the most popular channel coding to ensure the reliability of data transmission for a high data rate wireless communication. The STBC is one of MIMO(multi-input multi-output) techniques. In addition, this scheme uses a modified viterbi algorithm in order to get a high system gain when data is transmitted. Because we combine STBC and convolution code, the proposed scheme has a little high quantity of computation but it can get a maximal diversity gain of STBC and a high coding gain of convolution code at the same time. Unlike existing viterbi docoding algorithm using Hamming distance in order to calculate branch matrix, the modified viterbi algorithm uses Euclidean distance value between received symbol and reference symbol. Simulation results show that the modified viterbi algorithm improved gain 7.5 dB on STBC 2Tx-2Rx at
. Therefore the proposed scheme using STBC combined with convolution code can improve the transmission reliability and transmission efficiency.
Implementation of DS-SS Modem-based Communication System for Long Distance Wireless-Transmission
Ju, Won-Ki ; Kim, Yoon-Ho ; Lee, Joo-Shin ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1075~1081
In this paper, we proposed the DS-SS modem-based communication system for long distance wireless-transmission. The module we designed in this approach contained both convolution encoder and gold-code generator, which aimed at error correcting, T-DES encryption algorithm and spread-spectrum as well. It embodied PC-based GUI program in order to control the such command signal as data transceiver. This program also used to control the specific FPGA/MCU which is able to verify and interface to the modem. We demonstrated the communication system to verify its proper operation by using GUI program and designed hardware. A set of experiments are conducted and as a result, proposed communication system is well operated as the design specification.
A Study on the Effects of Service Training on Self-Efficacy and Service Orientation - Centering on Students of Department of Airline Service -
Chung, Min-Joo ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1082~1097
Service training influences on students' attitude, working behavior, and the improvement of service performance skill. To raise self-efficacy and service orientation of students, it is necessary to create and maintain a motivating environment. In order to accomplish the purpose of this study, related theories are researched and analyzed through theoretical consideration and in order to understand the relationship between them, questionnaires about service training, self-efficacy and service orientation of students were prepared. The statistics analysis of the collected materials was made by use of the SPSS-WINDOWS 12.0 and AMOS 5.0 statistics package. When it comes to the summary of the results through the empirical analysis of this study, it is as follows: First, the service training have been positively effective to the students' self-efficacy. Second, the service training has been positively effective to the students' service orientation. Third, the students' self-efficacy has been positively effective to the service outcome orientation and service process one.
Relative priority evaluation of security attributes in cloud computing using fuzzy AHP
Choi, Cheol-Rim ; Song, Young-Jae ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1098~1103
In spite of many advantages of cloud computing, security concerns are a barrier in users' adopting the cloud service. In this paper, we evaluate relative priorities between security attributes of ISO 7498-2 standards affecting overall security quality in cloud computing. For an objective evaluation, the fuzzy AHP(Analytic hierarchical process) is applied. The evaluation results represented the relative priority with concrete number can be an effective management method to choose and develop the cloud computing service.
Development of Memory Controller for Punctuality Guarantee from Memory-Free Inspection Equipment using DDR2 SDRAM
Jeon, Min-Ho ; Shin, Hyun-Jun ; Jeong, Seung-Heui ; Oh, Chang-Heon ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1104~1110
The conventional semiconductor equipment has adopted SRAM module as the test pattern memory, which has a simple design and does not require refreshing. However, SRAM has its disadvantages as it takes up more space as its capacity becomes larger, making it difficult to meet the requirements of large memories and compact size. if DRAM is adopted as the semiconductor inspection equipment, it takes up less space and costs less than SRAM. However, DRAM is also disadvantageous because it requires the memory cell refresh, which is not suitable for the semiconductor examination equipments that require correct timing. Therefore, In this paper, we will proposed an algorithm for punctuality guarantee of memory-free inspection equipment using DDR2 SDRAM. And we will Developed memory controller using punctuality guarantee algorithm. As the results, show that when we adopt the DDR2 SDRAM, we can get the benefits of saving 13.5 times and 5.3 times in cost and space, respectively, compared to the SRAM.
Development of Portable Astral Light using the High Power 3-Color LEDs
Yu, Seong-Mii ; Cheon, Min-Woo ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1111~1117
We was designed the portable LED light which can shadowless shooting and developed using a high-power LED that medical attention as a new lighting components for structural confirmation of oral dental area, medical and surgical lesions in the local area. LED which applied to the development, was used the 3-color LEDs for possible of implement a variety of colors and adjusted the light intensity. It is being magnified of delicacy expressiveness and three-dimensional for tone of the subject-specific. It has been developed a highly efficient light module that LED is used to consider the electrical characteristics and optical properties. SMPS has We was designed the portable LED light which can shadowless shooting and developed using a high-power LED that medical attention as a new lighting components for structural confirmation of oral dental area, medical and surgical lesions in the local area. LED which applied to the development, was used the 3-color LEDs for possible of implement a variety of colors and adjusted the light intensity. It is being magnified of delicacy expressiveness and three-dimensional for tone of the subject-specific. It has been developed a highly efficient light module that LED is used to consider the electrical characteristics and optical properties. SMPS has produced for use in mobile that can be driven at low voltage. In addition, it was also possible to implement a variety of colors from monochromatic Light to polychromatic light using by PWM control method and were available 32,768.
Development of Instruction Models for Creative Engineering Design on the Basis of Multi-Disciplinary Convergence
Kang, An-Na ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1118~1125
This paper is researched the methods of design instruction which can improve students' creativeness through the subject of creative engineering design as a required subject for the accredited engineering program. After studying the preference and problems of design tasks for the students of engineering college, a new education development plan for design process was suggested, which uses the existing design tasks in which creativeness improvement class was focused through the completion of structures. This was through the completion of structures that 'operating the most simple operation with the most complex mechanical mechanism', which uses Rube-Goldberg, the crystal of mechanical mechanism in the union of multi-disciplinary convergence curriculum.
A Study on Project Management Learning Community using Application
Cho, Do-Eun ; Kim, Si-Jung ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1126~1131
As the recent paradigm of education changes to become learner-centered, there is an increasing interest in project based class as one of new teaching models. Universities are accepting this change and aiming at fostering human resources of next generations, who are able to create creative changes, and studies are being actively conducted to that end. This study suggested a learner-centered teaching model which minimizes intervention of teachers in conducting projects of main text contents in designed subjects. This study suggested support system for the suggested model project-based class, team organization method, various interaction methods of learners, and team work monitoring method of teachers. And the suggestions were designed and realized through project management applications using smart phones which are being used by a rapidly growing number of people recently.
Real-Time Human Tracking Using Skin Area and Modified Multi-CAMShift Algorithm
Min, Jae-Hong ; Kim, In-Gyu ; Baek, Joong-Hwan ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1132~1137
In this paper, we propose Modified Multi CAMShift Algorithm(Modified Multi Continuously Adaptive Mean Shift Algorithm) that extracts skin color area and tracks several human body parts for real-time human tracking system. Skin color area is extracted by filtering input image in predefined RGB value range. These areas are initial search windows of hands and face for tracking. Gaussian background model prevents search window expending because it restricts skin color area. Also when occluding between these areas, we give more weights in occlusion area and move mass center of target area in color probability distribution image. As result, the proposed algorithm performs better than the original CAMShift approach in multiple object tracking and even when occluding of objects with similar colors.
Implementation of the Alert System for Safety of Workers
Kim, In-Min ; Ko, Bong-Jin ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1138~1142
This paper proposes the Alert System, the purpose of which is to detect an accident and to take care of it quickly in a working place. In the previous studies, a wireless network system was suggested using 'Star Topology'. However, this study constructs the wireless network system of Peer-to-Peer Topology, which allows to build more efficient network for communication. Also, with this system it is possible to check other the worker's situation through double sensing with Temperature/Gas sensor and Inclination sensor. In order to take action quickly, the Alert System is using a monitoring program which visualizes a worker's situation and the area where an accident occurs.
Design of Mobile based Campus-Cloude PaaS System for Hybrid-Web based Integrated Notification System
Kim, Yong-Il ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1143~1151
This study is implemented to Hybrid-web based Integrated System which provides information requesting by user under smart phone environment, cloud computing. This system is consisted of web robot of SaaS service which storages and manages the information after collecting bulletin information from distributed servers of campuses in interval and board managing PaaS server that provides server information to user through smart phone UI. We are also implemented NOA(Notification App) that inform new bulletin information using user's GPS.
A study on the Muscle Activity and Fatigue between Quadriceps Femoris Muscle during the Mode Shift of Contraction
Chon, Ki-Hwan ; Yang, Dong-Il ; Lee, Gwi-Yeol ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1152~1162
This study was function experiment or inspection of diagnosis x-ray unit at the hospital. It's how many changes tube voltage, tube current, DOSE value through the experiment depending on temperature increasing. The study want to know whether which parameter shown out of range or not how about image quality and so on. Increasing tube current and DOSE were not only too many radiation to the patient and radiation workers and make bad images but also the tube should be damaged by heat. This study was recommended proper exposure at intervals of seconds because passed inspection, reduced radiations for patient and the tube used long term. This results in the hospital's finances will be very helpful.
A Study on Family Family Communication Pattern Influencing adolescent TV use
Kim, Ae-Jung ; Nam, Chong-Hoon ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1163~1172
This study attempted to analyze between TV and family. While almost research has focused on the TV influencing family, this study has tried to contemplate family type and family communication pattern influencing TV use. Especially, this research focused on adolescent TV use. The result and conclusion are as follow: There are different children's TV watching styles based on family communication pattern(conversation-orientation and conformity-orientation). The amount of TV watching is high in conformity-orientation family pattern, and the amount of TV watching is low in conversation-orientation family pattern. In addition, conformity-orientation family pattern more prefer entertainment program, while conversation-orientation family pattern prefer informational program.
Design of Standard Encoder for Health information in aviation emergency medical service
Lee, Yong-Hee ; Kim, Soon-Seok ; Kim, Dong-Ho ; Lee, Deok-Gyu ; Jeong, Ho-Young ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1173~1179
In this paper, we propose the parser structure to realize the encoder which is standardized encoding rules to code and store the medical waveform such as an electrocardiogram or an blood pressure in aviation emergency medical service. To design the encoder based on the MDER, the effect on the scope of each tag should be considered. we design the parser with the root property which is to clarify the effect of scope between tags. the presented parser is implemented and compared with the other structures.
A Design of Object-Oriented Diagram Verifying System Using a Set of Verifying Rules and Frames
Kim, Jin-Soo ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1180~1186
For verifying consistency and completeness of some UML diagrams as a representative of a graphical notations for object-oriented designs, I first give an analysis of some UML diagrams and apply some verifying rules to the UML diagrams. In this paper, I design effective verifying system which possesses both diagramming facility and the consistency and completeness checking capability. The verifying system uses a set of frames to represent internal diagramming information.
Practical Civil UAV Engine Control using High-gain Observer
Jung, Byeong-In ; Ahn, Dong-Man ; Hong, Gyo-Young ; Hong, Seung-Beom ; Min-Seok, Jie ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1187~1193
In this paper, proposed controller preventing compressor surge and reducing the acceleration time of the fuel flow control system for turbo-jet engine. Turbo-jet engine controller is designed by applying fuzzy PID control algorithm and high-gain observer. Observer is used to estimate to compressor rotation speed of turbo-jet engine. Result of fuzzy inference is used as the fuel flow control inputs for preventing compressor surge and flame-out in turbo-jet engine. The controller is designed to converge to the desired speed quickly and safely. Using MATLAB to perform computer simulations verified the performance of the proposed controller.
Study on Fusion Proposal of Creativity Management and Management Quality for Airport Authorities - Focus of Fusion Management System Model Development -
Lee, Yung-Kil ; Kim, Ki-Woong ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1194~1211
The main research purpose of this paper is developed to Fusion Management System Model that is competition advantage and excellence airport for the airport authorities. Fusion Management System Model is developed to fuse and convert how is consist of creativity management and management quality system. Fusion management system structure is as follow. Firstly, part of foundation configured to philosophy and intention of CEO, company as like university and value-based creative corporate culture. Secondly, part of body is applied that is process by 6sigma, system by ISO9001. Thirdly, part of head is applied that is strategy and evaluation by Malcolm Baldrige National Quality Award of U.S.A. Also, system connected to synergy line that is creativity management, fusion & convergence and trust. Finally, this system has been researched to the practical perspective in order to realize for airport authorities.
Study on Digital Investigation Model for Privacy Acts in Korea
Lee, Chang-Hoon ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1212~1219
As recently Privacy Acts in Korea enforced in domestic companies' personal information management needs of a growing obligation for the safety measures and the right of personal information collection, use, limitations, management, and destroyed specifically for handling personal information. Such this regulations should be required technical and policy supports. Accordingly, for the enterprise incident has occurred, the personal information management system behave correctly operating to verify that the safety measures taken, and be determined by the specific preparation to be done. So the first, preparation phase corresponds to the upcoming digital forensic investigation model. On the other hand, the response team also carried these measures out correctly, it needs to be done to check the compliance of Privacy Act. Thus a digital forensics investigation model is strictly related with the implementation of the Privacy Acts and improve the coping strategies are needed. In this paper, we suggest a digital forensic investigation model corresponding to Privacy Act.
A Study on Enterprise and Government Information Security Enhancement with Information Security Management System
Park, Chung-Soo ; Lee, Dong-Bum ; Kwak, Jin ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1220~1227
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.
Non-Photorealistic Rendering using GPU Programming Technique
Bat-Ochir, Bolormaa ; Sung, Kyung ; Kim, Soo-Kyun ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1228~1233
NPR(Non-Photorealistic rendering) technique is developing by every years. NPR is inspired on artistic styles, which is painting, drawing, technical illustration, animation and cartoon. There have many application programs for NPR, which is popular and useful of animations, even on game industrial. In traditional computer graphics focused on non-photorealism, but this method need much more memory and time. Recent years, Many NPR methods present advanced rendering technique and real time technique using graphic accelerator. This paper propose to explain NPR with GPU programming.
Video Surveillance System for Smart Management Disaster and Applications
Kang, Heau-Jo ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1234~1240
Recently lots of problems are emerged on the conventional surveillance systems at several areas. Many research activities have been processing on those problems. Therefore, in this paper, it is helpful to all sorts of accident prevention and safe driving, and risks linked to the outside or the administrator tells, that intelligent video surveillance system which can be real-time analysis and monitoring configuration, technical elements, required features, application and its applies.
Design of a Jammer Localization System using AOA method
Lim, Deok-Won ; Choi, Yun-Sub ; Lee, Sang-Jeong ; Hoe, Moon-Boem ; Nam, Gi-Wook ;
The Journal of Advanced Navigation Technology, volume 15, issue 6, 2011, Pages 1241~1249
There are TOA, TDOA and AOA method to estimate the position of the electromagnetic wave transmitter by using the multiple receivers at the fixed position. Among these methods, AOA method is suitable for the jammer localization system. Because TOA method can be adopted for the clocks of the transmitter and the receiver are synchronized each other, and TDOA method can be only adopted for a broad-band jamming signal. This paper, therefore, analyzes the characteristics of the AOA measurements and the sensitivity of the positioning performance according to the system design parameters. Based on the analyzed results, the jammer localization system to meet the desired performance is designed, and it has been checked that the positioning error for the jammer located at a distance of 10km is lower than 38m through the simulation results.