• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.5
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• pp.754-763
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• 2018

The maritime ICT-convergence equipment are essentially required to a type approval (TA) certification that needs environmental and functional tests, to install in vessel. The environmental test is to experiment the possession for required durabilities of the target device in maritime environment, and the functional test is to check the required functions of target equipment based on international standard. In Korea, the environmental testing facilities amount to 227 sites, but there is no functional testing facility. Because of this, we establish a function test facility for the maritime ICT-equipment. In this paper, we analyze and design the functional testing requirement and required interlocking simulators for digital interfaces and navigation communication equipment. We propose the 2-steps of functional testing procedures, which are single test and integration test, to improve the reliability of testing result. The single test is to examine own functions of the target device, and the integration test is to check harmonized operation with other navigation and communication devices.

• Journal of Conservation Science
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• v.36 no.5
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• pp.306-314
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• 2020

The use of synthetic resins in ceramic restoration poses several challenges, including aging and potential damage to artifacts, which has raised the need to investigate new materials and restoration methods. This study set out to incorporate full color 3D printing into the 3D digital technology-based restoration method, an emerging approach currently being researched, and to print out missing parts with color information. After examining material physical properties with an experiment, the investigator printed out missing parts from a white porcelain vessel and grayish-blue-powdered celadon plate and compared them in chromaticity and brilliance. The experimental results show that the outputs had comparable tensile strength to the original restoration materials, whereas the recorded compressive strength was approximately 1.4~2 times higher than that of the original restoration materials. According to the NIST table of color difference values, the white porcelain vessel was visible at ΔE^*ab 1.55, and the grayish-blue-powdered celadon plate was perceivable at 3.34. Even though it was impossible to express the colors accurately owing to printer limitations, this non-contact approach reduced the possibility of damage to the minimum. In conclusion, it can be applied to objects with a high chance of damage or generate display effects through purposeful color differentiation in missing parts.

• Korean Journal of Acupuncture
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• v.22 no.1
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• pp.67-74
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• 2005

Objectives : This study was carried to identify the component of the Pericardium Meridian Muscle in human. Methods : The regional muscle group was divided into outer, middle, and inner layer. The inner part of body surface were opened widely to demonstrate muscles, nerve, blood vessels and to expose the inner structure of the Pericardium Meridian Muscle in the order of layers. Results We obtained the results as follows; He Perfcardium Meridian Muscle composed of the muscles, nerves and blood vessels. In human anatomy, it is present the difference between terms (that is, nerves or blood vessels which control the muscle of the Pericardium Meridian Muscle and those which pass near by the Pericardium Meridian Muscle). The inner composition of the Pericardium Meridian Muscle in human is as follows ; 1) Muscle P-1 : pectoralis major and minor muscles, intercostalis muscle(m.) P-2 : space between biceps brachialis m. heads. P-3 : tendon of biceps brachialis and brachialis m. P-4 : space between flexor carpi radialis m. and palmaris longus m. tendon(tend.), flexor digitorum superficialis m., flexor digitorum profundus m. P-5 : space between flexor carpi radialis m. tend. and palmaris longus m. tend., flexor digitorum superficialis m., flexor digitorum profundus m. tend. P-6 : space between flexor carpi radialis m. tend. and palmaris longus m. tend., flexor digitorum profundus m. tend., pronator quadratus m. H-7 : palmar carpal ligament, flexor retinaculum, radiad of flexor digitorum superficialis m. tend., ulnad of flexor pollicis longus tend. radiad of flexor digitorum profundus m. tend. H-8 : palmar carpal ligament, space between flexor digitorum superficialis m. tends., adductor follicis n., palmar interosseous m. H-9 : radiad of extensor tend. insertion. 2) Blood vessel P-1 : lateral cutaneous branch of 4th. intercostal artery, pectoral br. of Ihoracoacrornial art., 4th. intercostal artery(art) P-3 : intermediate basilic vein(v.), brachial art. P4 : intermediate antebrachial v., anterior interosseous art. P-5 : intermediate antebrarhial v., anterior interosseous art. P-6 : intermediate antebrachial v., anterior interosseous art. P-7 : intermediate antebrachial v., palmar carpal br. of radial art., anterior interosseous art. P-8 : superficial palmar arterial arch, palmar metacarpal art. P-9 : dorsal br. of palmar digital art. 3) Nerve P-1 : lateral cutaneous branch of 4th. intercostal nerve, medial pectoral nerve, 4th. intercostal nerve(n.) P-2 : lateral antebrachial cutaneous n. P-3 : medial antebrachial cutaneous n., median n. musrulocutaneous n. P-4 : medial antebrachial cutaneous n., anterior interosseous n. median n. P-5 : median n., anterior interosseous n. P-6 : median n., anterior interosseous n. P-7 : palmar br. of median n., median n., anterior interosseous n. P-8 : palmar br. of median n., palmar digital br. of median n., br. of median n., deep br. of ulnar n. P-9 : dorsal br. of palmar digital branch of median n. Conclusions : This study shows some differences from already established study on meridian Muscle.

• The KIPS Transactions:PartB
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• v.12B no.5 s.101
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• pp.543-552
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• 2005

This paper proposes the extraction of coronary arteries based on DSA(Digital Subtraction Angiography) through a texture analysis of background in the angiography. DSA is a well established modality for the visualization of coronary arteries. DSA involves the subtraction of a mask image - an image of the heart before injection of contrast medium - from live image. However, this technique is sensitive to the movement of background and can result to a wrong detection by the variance of background gray-level intensity between two images. Therefore, this paper solves a structural problem resulted from a background movement bV selecting an image which has the least difference of movement through an analysis of the similarity of background texture and proposes a method to extract only the blood vessel efficiently through local gray-level correction of the selected image. Using the coronary angiogram of 5 patients clinical data, we proved that the proposed method has the lower false-detection rate, approximately $2\%$, and the higher accuracy than the existing methods.

• The Journal of Korean Medicine
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• v.26 no.1 s.61
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• pp.11-17
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• 2005

This study was carried out to identify the components of the human heart meridian muscle, the regional muscle group being divided into outer, middle, and inner layers. The inner parts of the body surface were opened widely to demonstrate muscles, nerves, blood vessels and to expose the inner structure of the heart meridian muscle in the order of layers. We obtained the following results; $\cdot$ The heart meridian muscle is composed of muscles, nerves and blood vessels. $\cdot$ In human anatomy, the difference between terms is present (that is, between nerves or blood vessels which control the meridian muscle and those which pass near by). $\cdot$ The inner composition of the heart meridian muscle in the human arm is as follows: 1) Muscle H-l: latissimus dorsi muscle tendon, teres major muscle, coracobrachialis muscle H-2: biceps brachialis muscle, triceps brachialis muscle, brachialis muscle H-3: pronator teres muscle and brachialis muscle H-4: palmar carpal ligament and flexor ulnaris tendon H-5: palmar carpal ligament & flexor retinaculum, tissue between flexor carpi ulnaris tendon and flexor digitorum superficialis tendon, flexor digitorum profundus tendon H-6: palmar carpal ligament & flexor retinaculum, flexor carpi ulnaris tendon H-7: palmar carpal ligament & flexor retinaculum, tissue between flexor carpi ulnaris tendon and flexor digitorum superficial is tendon, flexor digitorum profundus tendon H-8: palmar aponeurosis, 4th lumbrical muscle, dorsal & palmar interrosseous muscle H-9: dorsal fascia, radiad of extensor digiti minimi tendon & extensor digitorum tendon 2) Blood vessel H-1: axillary artery, posterior circumflex humeral artery H-2: basilic vein, brachial artery H-3: basilic vein, inferior ulnar collateral artery, brachial artery H-4: ulnar artery H-5: ulnar artery H-6: ulnar artery H-7: ulnar artery H-8: palmar digital artery H-9: dorsal digital vein, the dorsal branch of palmar digital artery 3) Nerve H-1: medial antebrachial cutaneous nerve, median n., ulnar n., radial n., musculocutaneous n., axillary nerve H-2: median nerve, ulnar n., medial antebrachial cutaneous n., the branch of muscular cutaneous nerve H-3: median nerve, medial antebrachial cutaneous nerve H-4: medial antebrachial cutaneous nerve, ulnar nerve H-5: ulnar nerve H-6: ulnar nerve H-7: ulnar nerve H-8: superficial branch of ulnar nerve H-9: dorsal digital branch of ulnar nerve.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2007.11a
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• pp.225-229
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• 2007

The output voltage of a synchronous generator is regulated constantly by field current control of excitation system. Synchronous generator exciter has two type, first one is Drop control type by thyristor and second one is exciter current control type through power output by PWM control. Control method of the second one prevails, but when the power devices have a breakdown, output voltage of the generator rises rapidly. This exciter must have a protection circuit and system is complicated, so reliability is poor Excitation control type which is drop control type control only 10% of the power, so it can be improved precision. When a trouble come to the controller, output voltage of a generator don't rise excessively and the voltage rise about 10%, so it has a excellent reliability. This paper prove stability of the digital AVR.

• Journal of Advanced Marine Engineering and Technology
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• v.37 no.4
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• pp.384-390
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• 2013

The sizes of cryogenic vessels and storage tanks are becoming bigger due to strong demands from semiconductor and LCD industry as well as high-tech electronic industry. Conventional level and pressure gauges used for cryogenic vessels were analog types which made exact measurement difficult for the remained quantity at lower levels due to their poor accuracy. In this study, a design for a digital type gas level gauge which can measure the pressure and level inside of the cryogenic liquefied gas storage tanks has been proposed by using a differential pressure sensor, in which the measured data are monitored by a host PC and are transferred to a mobile printer for data confirmation at local station.

• Journal of Digital Contents Society
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• v.14 no.3
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• pp.391-400
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• 2013

IMO developed e-navigation implementation plan which is a new paradigm of vessel safety navigation using harmonized information technology. S-100 standard for electronic navigational chart is also adopted as one of e-navigation strategies. In S-100 framework, not only geographic features of electronic chart but every safety related objects can be expressed by UML so that can be provided by web services. This paper research to test S-100 web service for casualty information. It is processed by modeling with UML, converting XML document by XML schema. Finally, the XML data is represented by web-based application.

• Journal of Navigation and Port Research
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• v.28 no.5
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• pp.443-448
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• 2004

The Ministry of Maritime Affairs & Fisheries have plaining the advancing fishery information integrated system for the fishing present condition, marine resource administration and applicability considering. The fishery info17nation communication system is build up to the raw data & process-network-content. The communication system must be small size, low cost and adapted SSB transceiver, that is using fishery shipping. In this paper We present digital data communication network to exchange information for fishery and safety between fishing ship and coast station in cheeper communication fee using SSB in HF band.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.10a
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• pp.757-760
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• 2001

Korean shipbuilding industry increased a considerable amount of orders recently. It is time to build up the concept of Digital-Ship, and develop the fundamental technology to operate or manage an oceanic vessel safety and also economically for the world shipping industry, now. In this paper, all sorts of low-ranked devices, system components, integrated protocol, and ship-shore supporting system, which shares information between ship and shore by utilizing a low-orbit satellite communication will be described.