• 한국기계연구소 소보
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• s.15
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• pp.117-125
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• 1985

It is usual practice to ballast a sip to maintain requires operational safety at sea. However, excessive ballasting may reduce the operational economy of a ship. Therefore, The determination of the optimal location and quantity of ballast water is one of the important works at the preliminary design stage. To provide a convenient tool to ship designers the program for the determination of the optimal location and program the effect of the change of ballast water quantity in each tank on some characteristics of a ship, such as trim, initial stability and heel, is investigated and the minimum quantity of ballast water for each tank which satisfies the operational safety requirements is calculated.

• Proceedings of the KIEE Conference
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• 2000.11a
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• pp.49-51
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• 2000

This paper presents a fault location algorithm for single-phase-to-ground faults on the teed circuit of a parallel transmission line. This algorithm uses only local end voltage and current information. Remote end and fault currents are calculated by using distribution factors. To reduce load current effect, negative sequence current is used. EMTP simulation result have shown effectiveness of the algorithm under various conditions.

• Proceedings of the IEEK Conference
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• 1999.11a
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• pp.767-770
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• 1999

This paper investigates the performance of the hyperbolic position location(PL) technique in CDMA system. Hyperbolic PL systems are such technology that can provide accurate PL information using the existing cellualr/PCS infrastructure and without requiring additional hardware/software implementation within the mobile unit. The channel simulation is obtained by applying AWGN and multipath fading. The effect of the mobile position within the cell and the number of base stations on the accuracy of the hyperbolic PL technique is investigated.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 1998.04a
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• pp.135-140
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• 1998

The buckling of the perforated web of a simply supported Η-section beam subjected to uniformly distributed load is examined by means of the finite element method. With buckling analysis results, the effect of this hole on the load carrying capacity of the beam with dimensions L/h = 11 and 13 ( L = span length h = web depth) is investigated. The parameters whose variation have been considered are hole size and location. It can be generally concluded that the buckling of the perforated web of an H-section beam is not affected seriously by the location of the perforation.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.1363-1366
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• 2009

A new recognition method is used to find the three-dimensional target object on integral imaging. For finding the location of a target image, amount of reconstructed reference image is needed. This method is giving accurate information of target image by correlated among reconstructed target images and reference images.

• The Journal of the Korea Contents Association
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• v.17 no.6
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• pp.613-621
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• 2017

Currently, there are many digilog products that combine convenience of digital product with feeling of analog product. The experiment was conducted to study the effect of image location, regulatory focus, and message direction in digilog product evaluation. First, ad evaluation of digilog product is more favorable when regulatory focus and message direction is consistent. Especially, this effect is shown when image is located in the right side. Second, people evaluate digital product warmer when regulatory focus and message direction is consistent. This effect is stronger when image is located in the left side. Last, purchase intention is more favorable when regulatory focus and message direction is consistent. This effect is shown when image is located in the right side.

• Journal of the Korea Safety Management & Science
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• v.20 no.2
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• pp.9-20
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• 2018

This study is empirically intended to look into the effects of HVAC management on condensation cause and prevention in indoor swimming pools. The findings are summarized as follows. First, the experience of condensation in indoor swimming pools showed that 132 out of 142 people in total experienced the condensation in indoor swimming pools, which they had a high experience rate of 92.3%. For the location of condensation, the wall joints were 46.8% and the windows were 34.5%, which a total of 72.3% occurred in the wall joints and windows. Second, the effect of construction design, HVAC management and building construction on the cause of condensation in indoor swimming pools showed that building construction had an effect on the cause and location of condensation depending on the seasonal time, partially adopting hypothesis 1. Third, the effect of condensation-causing factors on condensation-preventing factors in indoor swimming pools showed that condensation had a close relationship with air and temperature conditions depending on the time and location of condensation, adopting hypothesis 2. As for the above-stated findings, the HVAC management in indoor swimming pools is an important concern factor that continues to cause condensation despite the development of advanced construction materials. Especially, building construction is a main factor that has a direct effect on condensation in the HVAC management of facilities. This implies that the window management is important in maintaining the wall joints - which can suppress the selective use and defect occurrence of construction materials - or confined spaces for a long time.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.30 no.8 s.251
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• pp.931-940
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• 2006

Defect assessment of a weld zone is important in fitness-for-service evaluation of plant components. Typically a J and $C^*$ estimation method for a defective homogeneous component is extended to a mismatched component, by incorporating the effect due to the strength mismatch between the weld metal and the base material. The key element is a mismatch limit load. For instance, the R6/R5 procedure employs an equivalent material concept, defined by a mismatch limit load. A premise is that if a proper mismatch limit load solution is available, the same concept can be used for any defect location (either a weld centre defect or a heat affected zone (HAZ) defect) and for any material combination (either two-material or multi-material combinations; either similar or dissimilar joints). However, validation is still limited, and thus a more systematic investigation is needed to generalise the suggestion to any geometry, any defect location and any material combination. This paper describes the effect of structural geometry on the $C^*$ integral for defective similar welds, based on systematic elastic-creep 2-D and 3-D finite element (FE) analyses, to attempt to elucidate the questions given above. It is found that the existing 'equivalent material' concept is valid only for limited cases, although it provides conservative estimates of $C^*$ for most of cases. A modification to the existing equivalent material concept is suggested to improve accuracy.

• English Language & Literature Teaching
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• v.9 no.2
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• pp.35-70
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• 2003

This study investigates the acquisition of English prepositions of location and direction by Malaysian Chinese ESL learners. It was conducted with the objective of finding out which of the two types of prepositions was more problematic to the L1 Chinese learners. The study also sought to investigate the effect of age and proficiency levels in English on the acquisition of the English prepositions of location and direction by these learners. Additionally, the study sets out to determine the extent to which the L1 Chinese learners have acquired the English prepositions of location and direction. This study involved three groups of Chinese ESL learners: elementary, intermediate and advanced. They were selected based on their age and their performance on a standardized proficiency test. The instrument used to collect data was a preposition test comprising 85 items. These items on prepositions of location and direction were randomly arranged in the tasks. The test required subjects to respond to multiple choice questions, match given sentences with appropriate prepositions, fill in blanks with the appropriate prepositions, judge given sentences to see if they are grammatical or ungrammatical and correct the ungrammatical sentence by providing the appropriate prepositions. The results indicate that age and proficiency levels of the learners made a difference in the acquisition of English prepositions of location and direction. The older learners with higher proficiency levels seem to fare better than the younger and less proficient learners. The results suggest that the prepositions of location arc slightly more problematic than prepositions of directions to the L1 Chinese learners. Our data also suggest that certain prepositions of each type are more problematic than others.

• Journal of Korean Library and Information Science Society
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• v.48 no.3
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• pp.45-61
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• 2017

The objective of this study is to understand the application of relative location system and minute classification system in the DDC and to identify the effect of the relative location system and minute classification system during the late of 19th century. In order to achieve the objective, four main investigation areas were chosen: relative location system, minute classification system, and DDC influence to other libraries and classification systems. First, DDC applied a relative location system revolutionarily instead of a fixed location system for arranging books on the shelves, so it opened the period of modern library classification systems. Second, it used a minute classification system, and could classify books which had minute subjects. Third, it applied form to a criterion for dividing divisions and sections, so it helped for classifying books. Fourth, it used a numerical decimal system as a classification system, then people could use it economically and practically. Last, DDC influenced modern classification system such as the Expansive Classification and the Subject Classification etc. DDC is a suitable library classification system for the needs of the times, and it is a practical classification system for each library.