• Title/Summary/Keyword: Test Set Construction

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A Large-scale Test Set for Author Disambiguation (저자 식별을 위한 대용량 평가셋 구축)

  • Kang, In-Su;Kim, Pyung;Lee, Seung-Woo;Jung, Han-Min;You, Beom-Jong
    • The Journal of the Korea Contents Association
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    • v.9 no.11
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    • pp.455-464
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    • 2009
  • To overcome article-oriented search functions and provide author-oriented ones, a namesake problem for author names should be solved. Author disambiguation, proposed as its solution, assigns identifiers of real individuals to author name entities. Although recent state-of-the-art approaches to author disambiguation have reported above 90% performance, there are few academic information services which adopt author-resolving functions. This paper describes a large-scale test set for author disambiguation which was created by KISTI to foster author resolution researches. The result of these researches can be applied to academic information systems and make better service. The test set was constructed from DBLP data through web searches and manual inspection, Currently it consists of 881 author names, 41,673 author name entities, and 6,921 person identifiers.

Development of Construction and Painting Technology for the Aluminum Carbody of Rolling stock (알루미늄 철도차량 차체 제작 및 도장 기술 개발)

  • 서승일;김진태;박일철;이동헌;신돈수
    • Journal of the Korean Society for Railway
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    • v.2 no.2
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    • pp.1-5
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    • 1999
  • Based on the development of designed technology for aluminum carbody. the prototype aluminum carbody has been constructed. All extrusion profiles required for the carbody has been produced and their quality has also been proven. For sound construction. welding technology to join aluminum extrusion profiles has been developed and jigs for precise assembly of blocks have been made. The aluminum carbody for urban subway train has been completed with the required chamber being set and the welding deformations being constrained by jigs. The safety of the carbody structure has also been proven by the static load test. And also, painting technology has been developed and the surface of the carbody has been pre-treated and painted. The developed technology to construct the aluminum carbody can be used in mass production of aluminum cars ordered by domestic and foreign customers.

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Estimation of Setting Time of Concrete Using Rubber Hardness Meter (고무경도계를 이용한 콘크리트의 응결시간 추정 가능성 분석)

  • Han, Min-Cheol;Han, In-Deok;Shin, Yong-Sub
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.7 no.4
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    • pp.358-366
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    • 2019
  • The purpose of this study is to explore the possibility of estimating optimum surface finishing work time of the fresh concrete placed at the job site by applying a surface hardness test meter(Durometer). Tests are carried out by measuring and comparing the Proctor penetration resistance test and hardness test by Durometer. Correlations between Procter penetration test and hardness test by Durometer were obtained. Two different types Durometer were applied to estimate setting time. Test results indicate that the measurement of the Durometer and the test of the Proctor penetration resistance are highly correlated. When measuring the initial setting time with Durometer, initial setting time is reached when the hardness value by the type C Durometer is reached around 42HD, and when final setting is measured with the type D Durometer, the surface finishing work time limit and curing time can be estimated with 10HD of Durometer.

The algorithm design and the test bed construction method of processing for periodic delayed data (주기적 지연 데이터 처리를 위한 알고리즘 설계 및 테스트 베드 구축 방법)

  • Sang-hoon Koh;Ho-jin Song;Nam-ho Keum;Pil-joong Yoo;Se-kwon Oh;Young-sung Kim
    • Journal of Advanced Navigation Technology
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    • v.27 no.1
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    • pp.102-110
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    • 2023
  • The MATS(Missile Assembly Test Set) is manufactured and used to check the function of the missile during the period of development for the guided missile system, and the requirements for power and communication are managed for equipment production. The MATS developer implements software according to the proposed communication standard to guarantee the reliability of the data that communicates with the guided missile. The test bed is built and self-performance evaluation is performed after implementation. And the verification process is performed using the standard equipment. The characteristics of periodic delay for data transmission must be reflected when building a test bed. This paper describes a test bed construction method for data processing with periodic delay. Also This paper compares and evaluates the performance by changing the previously designed algorithm.

Load Variation Characteristics about Rope Length of Large Soft Body of Lightweight Wall Impact Resistance test (건식 경량벽체의 내충격성 시험용 연질 충격체의 줄 길이에 따른 하중변동 특성)

  • Kim, Ki Jun;Song, Jung Hyeon;An, Hong Jin;Shin, Yun Ho;Ji, Suk Won;Choi, Soo Kyung
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2014.11a
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    • pp.182-183
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    • 2014
  • In case of large soft body impact test at the construction site, the test conditions are different from conditions at the laboratory, and the length of rope to hold the impact specimen must be changed. In a previous study, the fact that the size of impact load is varied by the length of rope on the large soft body impact specimen was confirmed. In this study, the length of rope and fall height were set as independent variables to conduct the load analysis test. It was determined that the load fluctuation was occurred depending on the length of rope under the fall height over 100 mm, and it is concluded that the additional setup of fall height to modify the actual impact load size is required when the length of rope is below 2.5 m. In this study, the modified formula to put equal size of impact load regardless of the length of rope was extracted through the experiment.

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Premature Stiffening of Cement Paste Associated with AFm Formation

  • Chung, Chul-Woo;Lee, Jae-Yong
    • Journal of the Korea Institute of Building Construction
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    • v.11 no.1
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    • pp.83-90
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    • 2011
  • The purpose of this research is to investigate the effect of AFm formation on the stiffening process of cement paste. High and low alkali sulfate clinkers were used for the experiments. The flow and stiffening behavior of cement paste was investigated using modified ASTM C403 penetration resistance test and oscillatory shear rheology. X-ray powder diffraction (XRD) was used for phase identification associated with stiffening of the paste. It was found from the results that low alkali clinker mixture produced very strong premature stiffening whereas high alkali clinker mixture did not cause premature stiffening. This is because of the large amount of alkali sulfate present in the clinker. Addition of calcium and sodium chloride to the high alkali clinker mixture caused faster stiffening and set.

Analyzing the Strength Development of Concrete with Function of Non-Sintered Hwangto Admixture Ratio at Early Ages (초기 재령에서 비소성 황토 혼입율에 따른 콘크리트의 강도 발현 분석)

  • Kim, Tae-Hyung;Kim, Won-Chang;Choi, Hyung-Gil;Choi, Hee-Yong;Lee, Tae-Gyu
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.39-40
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    • 2023
  • In this study, the compressive strength development was analyzed at early ages of concrete specimens admixed with non-sintered hwangto to reduce the CO2 emissions generated during cement production. The W/B of the specimens was set at 0.41, the percentage of non-sintered hwangto admixture was set at three levels of 15, 30, and 45%, and the compressive strength were measured at 1, 3, 7, and 28 days. The results showed that the compressive strength decreases as the percentage of non-sintered hwangto increases, but the strength development rate increases, and the NHTC41-15 test specimen developed a compressive strength close to NC41 at 28 days.

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Image database construction for IC chip analysis CAD system (IC칩 분석용 CAD 시스템의 영샹 데이터베이스 구축)

  • 이성봉;백영석;박인학
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.33A no.5
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    • pp.203-211
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    • 1996
  • This paper describes CAD tools for the construction of image database in IC chip analysis CAD system. For IC chip analysis by high-resolution microscopy, the image database is essential to manage more than several thousand images. But manual database construction is error-prone and time-consuming. In order to solve this problem, we develop a set of CAD toos that include image grabber to capture chip images, image editor to make the whole chip image database from the grabbed images, and image divider to reconstruct the database that consists of evenly overlapped images for efficient region search. we also develop an interactive pattern matching method for user-friendly image editing, and a heuristic region search method for fast image division. The tools are developed with a high-performance graphic hardware with JPEG image comparession chip to process the huge color image data. The tools are under the field test and experimental resutls show that the database construction time can be redcued in 1/3 compared to manual database construction.

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An Experimental Study of Tension Properties on New Developed Up-Set Coupler (Up-Set Coupler 이음철근의 인장특성에 대한 실험적 연구)

  • Sim, Jong-Sung;Park, Cheol-Woo;Kang, Tae-Sung;Kim, Tae-Soo
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.12 no.5
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    • pp.109-115
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    • 2008
  • As structures are getting super-rise and large-sized, introducing the construction methods such as prefabrication of bar-meshes and complex method are being actively discussed to pursue the high quality of reinforced concrete, the simplification of field works, and the reduction of duration, as well as the study on how to connect reinforcing rods, which occurs while applying the same methods, is in progress Also, the pressure welded joint is a kind of method that heats the ends of reinforced bars locally and joint them, and after the pressure welding, the vulnerable part in the reinforced bar occur. Thus, in the construction field, the throughout quality control is necessary because of the delayed duration and the lowered construct ability. In this study, of the traditional lap splice method and the mechanical splice one, the screw coupler, we tried to look into through experiments the prefabrication method of bar-meshes, a typical joint method usually used for the joint parts for PSC structures applying the reinforced bar with its big diameter, and a newly-developed up-set coupler method. And we also examined the characteristic of tensile.

Construction of a Support System for Determining the Condition of Injection Molding (사출성형 조건 설정 지원시스템 구축)

  • Yi Il-Lang;Kim Bo-Hyun;Baek Jae-Yong
    • Journal of the Korean Society for Precision Engineering
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    • v.22 no.3 s.168
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    • pp.68-77
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    • 2005
  • The set-up of an injection molding process is a ye complicated and time-consuming job because it is required to well determine a lot of variables closely related to products. Thus, the productivity of the set-up process mainly depends on operators' expertise and know-how. To solve the problem mentioned before, this research constructs a support system which helps operators determining the condition of the injection molding easily and systematically. The construction of the support system consists of the following four steps: 1) to determine the control variables which affect the target defect types, 2) to design and implement UI(user interface) using a scenario of set-up process, 3) to design and implement the search algorithms for the initial and optima] condition, and 4) to construct the embedded system which integrates the support system with the operating system of a plastic injection molding machine. The test experiments of some typical products are performed using the embedded system to verify the validity of the support system.