• Proceedings of the Korean Geotechical Society Conference
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• 2008.03a
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• pp.1304-1312
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• 2008

In this study, the analysis to the preference level on slope measuring instrument of weight values on effect factors find out the reasonable monitoring on slope was performed, in which used AHP(Analytic Hierarchy Process) techniques. The results on professional group, such as the industry, academic, institute and government, analyzed that the very important effect factors, which were indicator of various collapse type, convenience of instrument management, The evaluation of preference level on the slope measuring instrument analyzed the invar wire extensometer which was high level at convenience of install, economical efficiency of install and convenience of instrument management.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.271-272
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• 2008

TD-SCDMA combines TDMA and CDMA components to provide more efficient use of radio resources, and includes a new feature called HSDPA (high-speed downlink packet access) in the R5 stage. The TD-HSDPA supports high-speed traffic with a shared channel, but its uplink mechanism causes feedback problem for scheduling. Since the base station of TD-SCDMA can estimate the location of mobile terminals precisely, it can also estimate the possible path loss. In this paper, the base station utilizes the estimated path loss for scheduling, which is related with CQI (channel quality indicator) values. The proposed mechanism can provide the TD-HSDPA scheduler with an intial CQI value for efficient transmission.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.5 no.3
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• pp.22-30
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• 1996

In order to compensate for out-of-straightness of shafts, an automatic straightening process composed of an automatic measuring module, an automatic control unit and operating softwares was developed with a hydraulic press. The out-of-sraightness of each shaft was measured automatically in the measuring stage. An optimal pressure point was determined to minimize TIR value of the shaft according to press count of 3-points bending process. In the geometric adaptive control procedure, punch stroke and springback of the shaft were predicted by an observer using on-line measured values of press force and deflection amount I each press count. An automatic straightening machine was realized with the measuring module, the GAC module, PLD, IBM-PC and the operating software on the hydraulic press. the validity of the proposed straightening process was confirmed through a series of experiments with cam shafts.

• Journal of Fisheries and Marine Sciences Education
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• v.28 no.3
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• pp.727-737
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• 2016

This study is aimed to analyze the economic effectiveness (direct fishing income effect) of the marine afforestation project in Gangneung region. Based on the surveyed data, the production values and costs of the marine afforestation project are estimated and compared to determine the economic validity of the marine afforestation project. Results show that the B/C ratio, as an indicator of economic evaluation, is 1.30 with an interest rate of 5.5%, indicating that the marine afforestation project in Gangneung region would be economically feasible under the current production and market conditions. However, it is expected that the economic effectiveness would be increased when considering benefits of recreational fishing and greenhouse gas reduction from the marine afforestation project.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.15 no.7 s.100
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• pp.859-864
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• 2005

Noise map is a presentation of existing data or predicted noise situation in terms of noise indicator. However, it has shortcoming for assessing the number of people exposed, or the number of dwellings affected to any relevant limit values of noise level in certain areas. In this study, so called over-ride value noise mapping is Proposed to make up for the shortcoming by using over-ride function of object-oriented programming and it is to show the guard of the area where it is satisfied the standard of option, or it is not satisfactory. Over-ride value noise map data is combined with topography layer, population and house statistics, and GIS space statistical analysis. The over-ride value noise mapping can also be applied to make the road traffic noise map, the railroad noise map, the aircraft noise map, and the industrial site noise map. This can express noise damage information more exactly.

• Journal of Veterinary Clinics
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• v.11 no.1
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• pp.393-399
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• 1994

This study was carried out to investigate the analgesic and antipyretic effects of acupuncture in goat suffered from pain and fever induced experimentally : electroacupuncture and laser acupuncture for the relief of pain and traditional needing for the of fever. Pain was induced by intraperitoneal injection of 0.7% acetic acid solution and it's extent was estimated with the number of writhing syndrom as indicator of pain. When lipopolysaccharide was given into the vein in goat, fever with biphasic type was produced. In the goats with pain the superior analgesic effects of electroacupuncture to aminopyrine and sulpyrine were found, but the effects of laser acupuncture were not satisfactory. The high body temperature of goats was gradually decreased with the lapse of time following traditional needling(venesection by needle) and showed a tendency to return to normal body temperature. Serum GOT, GPT:, BUN, creatinine values and acetylcholinesterase activity following electroacupuncture were not altered. It is considered that electroacupuncture combined with medicament can sucure exellent analgesic and antipyretic effects in animal practice.

• Journal of the Korean Society for Nondestructive Testing
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• v.36 no.2
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• pp.112-120
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• 2016

The nonlinearity parameter is frequently measured as a sensitive indicator in damaged material characterization or tissue harmonic imaging. Several previous studies have employed the plane wave solution, and ignored the effects of beam diffraction when measuring the non-linearity parameter ${\beta}$. This paper presents a multi-Gaussian beam approach to explicitly derive diffraction corrections for fundamental and second harmonics under quasilinear and paraxial approximation. Their effects on the nonlinearity parameter estimation demonstrate complicated dependence of ${\beta}$ on the transmitter-receiver geometries, frequency, and propagation distance. The diffraction effects on the non-linearity parameter estimation are important even in the nearfield region. Experiments are performed to show that improved ${\beta}$ values can be obtained by considering the diffraction effects.

• Ocean Systems Engineering
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• v.1 no.1
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• pp.1-15
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• 2011

Offshore structures are subjected to wind loads, wind generated wave excitations, and current forces. In this paper we focus on the wind generated wave excitations as the main source for the external forces on the structure. The main objective of the paper is to provide a tool for using deck acceleration measurements to predict the value of the force and moment acting on the offshore structure foundation. A change in these values can be used as an indicator of the health of the foundation. Two methods of analysis are used to determine the relationship between the force and moment acting on the foundation and deck acceleration. The first approach uses neural networks while the other uses a Fokker-Planck formulation. The Fokker-Plank approach was used to relate the variance of the excitation to the variance of the deck acceleration. The total virtual mass of the equivalent SDOF of the structure was also determined at different deck masses.

• Journal of the Korean Chemical Society
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• v.14 no.1
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• pp.5-12
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• 1970

River water and industrial waste water in Seoul were studied by means of chemical oxygen demand(COD) as an indicator for water pollution, from August 1967 to July 1968. Rivers flowing through residential and industrial areas are badly contaminated and COD of water in Han River increases as it progresses to downstream. Seasonal variation of COD showed that higher value of COD was observed in spring and lower in autumn. It is clear that the seasonal variation of COD is influenced by the precipitation. Close relationship was found between COD and population density. The lowest COD curve obtained by plotting COD values against population density and show that the curve slopes upward. The discontinuation of the curve was shown at the population density of 14,000/km$^2$; an increase in COD was acute over the population density of 14,000/km$^2$.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.3
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• pp.725-732
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• 2011

There are some trials to adopt the RFID/USN technologies at container terminals for effective terminal operations. In this paper, we propose a realtime location recognition method for stacked containers under the assumption that each container has a wireless sensor node to measure the RSSI values from neighbor nodes. We develope an RSSI based location algorithm with performance evaluations by RSSI measurement and application program implementation.