• International Journal of Internet, Broadcasting and Communication
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• 제16권1호
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• pp.148-155
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• 2024

We are designed was to find an efficient warm-up method for resistance training for muscle hypertrophy, and 10 males with at least 3 years of resistance training experience were selected as subjects. The 75% 1RM was measured directly based on the pre-measured bench press 1RM. After that, the main experiment of 75% 1RM bench press according to the three warm-up methods was conducted one week apart, and all experiments were randomized and cross-over. Performance according to the warm-up method (3) was measured by total exercise volume, and physiological changes were determined by myocardial workload. All post-measurement data were analyzed using SPSS.22.0 and analyzed using repeated measures one-way ANOVA and contrast comparisons were made using the deviation method. The results showed that the method of gradually increasing the number of repetitions by performing the same intensity as the intensity of the main exercise in the form of muscle hypertrophy, but at submaximal repetitions, showed the highest performance.

• Structural Engineering and Mechanics
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• 제51권1호
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• pp.181-197
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• 2014

Stress determination is a very important step in the assessment of the safety of existing reinforced concrete structures. In rock mechanic this goal is achieved with the over-coring technique. The main idea behind such a technique is to isolate a material sample from the stress field in the surrounding mass and monitor its re-equilibrium deformation response. If the materials remains elastic, and elastic properties are known, stresses may be obtained from the corresponding measured strains. The goal of this paper is to evaluate if the over-coring technique is applicable to reinforced concrete members. The results of an experimental investigation on the behaviour of compressed concrete columns subjected to the over-coring technique are presented. Considerations about the range of applicability of the technique are made by comparing the measured and the theoretical stresses. After that, results of failure tests on drilled specimens are presented and discussed. Furthermore, the response is compared with that of columns core-bored before the compressive test. Finally, comparisons with numerical analysis are shown.

• Wind and Structures
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• 제32권4호
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• pp.393-403
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• 2021

A comprehensive knowledge of the wind flow in hilly terrains is of great interest in many engineering applications, be it wind energy distribution for suitable site selection for wind farms, pollution dispersion, forest fire propagation or agrometerological studies. Several researchers have shown that wind flow over a hilly terrain may be significantly different when compared with the wind flow over a flat terrain. Complex hilly terrains may alter the wind speed to a great extent. Therefore, this effect of terrain must be properly assessed by designers and planners to arrive at a proper wind flow distribution. This paper reviews the work done in this area over the past three decades. Wind flow over two-dimensional hills and two-dimensional escarpments investigated in wind tunnels by various researchers is presented in this paper.

• 한국인쇄학회지
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• 제14권2호
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• pp.21-36
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• 1996

With increased use of halftone dot overprints for offset color printing, it is important to study the density and ink trap of the overprints. In this research the equation to predict the density and the method to evaluate ideally the fractional ink trap are preposed. And also the halftone dot overprinting experiments of Magenta over Cyan or Cyan over Magenta under wet-on-wet or wet-on-dry overprinting using 2-color offset press show the above proposals are reasonable, and show the effect of overprinting sequence on the density and ink trap.

• Steel and Composite Structures
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• 제2권2호
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• pp.113-128
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• 2002

The performance of steel MRF with rigid connections, proportioned by adopting different capacity design criteria, is evaluated in order to highlight the effectiveness of static non-linear procedure in predicting the structural seismic behavior. In the framework of the performance-based design, some considerations are made on the basis of the results obtained by both dynamic time histories and push-over analyses, particularly with reference to the damage level and the structure ability to withstand a strong earthquake.

• Earthquakes and Structures
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• 제9권2호
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• pp.305-320
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• 2015

The present paper is devoted to study SH-wave propagation in heterogeneous layer laying over an inhomogeneous isotropic elastic half-space. The dispersion relation for propagation of said waves is derived with Green's function method and Fourier transform. As a special case when the upper layer and lower half-space are homogeneous, our derived equation is in agreement with the general equation of Love wave. Numerically, it is observed that the velocity of SH-wave increases with the increase of inhomogeneity parameter.

• 동력기계공학회지
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• 제17권1호
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• pp.97-103
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• 2013

Press machine has advantages over other manufacturing machine which can produce large quantities of products in short time so it is widely used in lots of industrial sectors. To obtain the vehicle's weight lightening and rigidity of the body-frame by applying 'Hot stamping' technique is increasing in the automotive field. In this paper, to improve the irregular vibration arose by 800Ton hot stamping press, the research was continued. Bed, slide and main frame are the key part of working precision, so perform structural analysis was conducted, and based on the analyzing results, structural changes were done on the parts where structural deformation occurred.

• 한국정밀공학회지
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• 제25권7호
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• pp.55-63
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• 2008

Fine blanking is a process of press shearing which makes it possible to produce the thick sheet metal of the finished surface and the close dimensional accuracy over the whole material thickness in the single blanking operation. In this paper, a plate holder of automotive seat recliner is manufactured by FCF(Flow Control Forming) method using the conventional mechanical press instead of the fine blanking press. Main processes for manufacturing of the plate holder by FCF method are embossing, half blanking and trimming processes. Optimal clearance, stripper force and counter force to increase the dimensional accuracy of the plate holder have been investigated by FE-analysis. As a result of FE-analysis, the clearance for both embossing and half blanking processes was -2%t and the forces of stripper and counter were 25ton and 15ton, respectively. After manufacturing the plate holder by FCF method, the measured dimensional characteristics have been compared with the required specifications as the final product. Although the dimensional accuracy of the plate holder manufactured by FCF method was a little inferior to that by fine blanking process, it was satisfactory in a general sense.

• 한국콘텐츠학회논문지
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• 제16권1호
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• pp.370-381
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• 2016

본 연구는 언론보도에 의한 초상권 침해 관련 판결의 추이와 승패 여부, 원인 등 초상권 침해를 둘러싼 언론소송 특성을 고찰하기 위한 것으로 최종심 판결이 처음 나오기 시작한 1990년부터 2014년까지 언론보도에 의한 초상권 침해 관련 판결 81건을 전부 수집해 판결문을 분석했다. 분석결과 언론을 상대로 제기된 초상권 침해 관련 소송의 최종심 재판 결과가 처음 나온 것은 1990년이다. 1990년대에는 주로 선정적 보도가 많았던 월간잡지를 대상으로 하는 초상권 분쟁이 많았으나 2000년대 들어서는 방송을 대상으로 한 초상권 침해분쟁이 크게 늘어났다. 2000년 이후에는 초상권 관련 언론소송의 71% 가량이 방송에 집중됐다. 방송의 영향력이 커진데다 영상을 필수로 하는 방송의 특성상 초상권 침해 소지가 높았기 때문이다. 특히 2005년 "언론중재법"이 시행된 후 초상권 관련 소송이 급격히 늘어난 것은 주목할 만한 현상이다. 초상권 관련 언론소송 81건 가운데 언론사가 승소한 사건은 23건으로 언론사 승소비율은 28. 4%에 그쳤다. 이는 법원이 언론매체의 특수성을 고려하기보다는 일반인의 초상권 보호를 우선으로 고려한 결과로 분석된다. 하지만 원고가 공인인 경우 언론사 승소율이 52. 9%에 달해 일반인 경우의 언론 승소율 22%보다 월등히 높아 언론사를 상대한 초상권 소송에서 공인이 일반인에 비해서 불리했던 것으로 나타났다. 이는 1997년 이후 활발하게 논의되기 시작한 공인 이론의 적용으로 공인에 대한 언론의 감시기능을 법원이 인정한 것으로 볼 수 있다.

• Wind and Structures
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• 제19권5호
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• pp.541-563
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• 2014

This paper investigates the topographic effects on wind characteristics over hilly terrain, based on wind data recorded at a number of meteorological stations in or near complex terrain. The multiply data sources allow a more detailed investigation of the flow field than is normally possible. Vertical profiles of mean and turbulent wind components from a Sodar profiler were presented and then modeled as functions of height and wind speed. The correlations between longitudinal and vertical wind components were discussed. The phenomena of flow separation and generation of vortices were observed. The distance-dependence of the topographic effects on gust factors was revealed subsequently. Furthermore, the canyon effect was identified and discussed based on the observations of wind at a saddle point between two mountain peaks. This study aims to further understanding of the characteristics of surface wind over rugged terrain. The presented results are expected to be useful for structural design, prevention of pollutant dispersion, and validation of CFD (computational fluid dynamics) models or techniques over complex terrains.