기계 구조물에서 부재의 결합부가 시스템 전체의 동적 거동에 매우 심각한 영향을 미치고 있다. 따라서 동적인 응답의 정확한 예측은 이러한 결합부를 어떻게 모델링 하느냐에 달려 있다고 해도 과언이 아니다. 본 논문에서는 결합부의 유연성을 정량적으로 표현하기 위하여 서로 대칭이고 마주보는 외팔보의 중앙에 선형 및 비틀림 스프링을 결합부에 이식하였다. 이를 바탕으로 결합부의 강성 변화에 따른 시스템의 재해석은 축약법과 유한요소법으로 계산하였다. 이항 급수로 표현되는 기저벡터의 수에 따라서 전체 모델의 크기는 획기적으로 감소되어 축약 모델로 매우 짧은 시간에 효율적으로 계산할 수 있었다. 본 연구에서는 두 가지 경우의 수치해석 예가 제시되어 축약 모델의 결과가 정밀해와 잘 일치함을 보여주고 있다.

With the advent of lean-six sigma era, an extensive use of analytic tools such as control charts is required in the field of manufacturing. In relation to statistical quality control (SQC) or process control (SPC), the Korean standards have undergone a meaningful change. In this study, the theoretic backgrounds for evaluating the control limits in connection with the variable control charts are examined in view of better understanding the related constants and coefficients. This paper is intended to help the quality control practitioners understand the mathematical backgrounds by comparing related quality control constants and also to encourage them to make use of and to take the advantage of the variable control charts which are very useful for implementing the concept of lean-six sigma in many industrial sites.

Due to the advantageous mechanical properties of the fiber reinforced polymeric plastics(FRP), their application in the construction industries is ever increasing trend, as a substitute of structural steel which is highly vulnerable under hazardous environmental conditions (i.e., corrosion, humidity, etc.). In this study, hybrid FRP-concrete composite pile (HCFFT) connection is suggested. The HCFFT is consisted of pultruded FRP unit module, filament wound FRP which is in the outside of mandrel composed of circular shaped assembly of pultruded FRP unit modules, and concrete which is casted inside of the circular tube shaped hybrid FRP pile. Therefore, pultruded FRP can increase the flexural load carrying capacity, filament wound FRP and concrete filled inside can increase axial load carrying capacity. In the study, connection capacity of HCFFT(small and mid size) is investigated throughout experiments and finite element method. From the results of experiments, we suggested the connection methods about HCFFT pile connection.

이 논문은 그 제목을 ‘북한지역에서 외국인 및 외국법인의 토지이용과 관련한 법적 문제’이라고 정하였다. 현재의 남북한이 장래에 통일을 할 경우에 제도적 통합과정에서 통일한국의 토지제도를 어떻게 재편하여야 하는지, 그리고 그러한 재편과정에서 무엇을 고려하여야 하는지를 논리적으로 검증하는 것은 중요한 의미가 있기 때문이다. 물론 장래에 어떠한 문제가 발생할 것인지를 현재의 시점에서 정확하게 예측할 수는 없다. 그러나 그것이 사회질서를 규율하는 제도라고 한다면 불합리한 결과가 발생되지 않도록 그 위험성을 최소화할 수 있는 방법이 모색되어야 한다. 특히 토지제도는 새롭게 창출되는 제도가 아니고, 인류의 역사와 함께 발전되어 온 제도라는 점에서 종래에 발생한 문제점들을 면밀하게 파악한다면, 장래에 정립될 법제도는 보다 합리적이고 실질적 정의에 합치될 수 있다. 통일한국이 합리적으로 토지제도를 재편하기 위해서는 과거의 토지제도의 역사적 전개과정이 고려되어야 한다. 한 가지 유념하여야 할 것은 남북한의 통일은 분단의 아픔을 더 이상 후세에게 물려주지 말아야 한다는 민족통합의 차원에서, 그리고 통일이후의 북한경제의 활성화를 통하여 국가전체의 경쟁력을 상승시키고자 하는데 그 주된 목적이 있는 것이다. 따라서 남한 헌법상의 재산권 보장규정을 통일이라는 사회변혁상황에 그대로 대입하여 원소유자의 권리회복문제를 논의할 필요는 없다고 생각된다. 더욱이 남북한이 분단이후부터 현재에 이르기까지 각각의 지역에서 정부를 수립하여 규범력있는 통치권을 행사하고 있다는 점과 국제사회에서 양자가 국제법 주체로서 평가받고 있다는 점, 특히 과거의 토지몰수행위의 목적이 불합리한 토지집중현상을 해소하기 위해서 이루어졌다는 점을 고려한다면, 대등한 당사자의 관계에서 합의통일을 하는 것이 논리적으로도 타당하다고 생각된다. 따라서 분단 이후에 남한을 물론이고 북한에서 이루어진 토지제도의 정립행위도 모두 유효하다는 전제 위에서 통일한국의 토지제도를 재편하는 것이 타당하다.

Fiber reinforced plastic (FRP) structural shapes are readily available in civil engineering applications. Among many manufacturing techniques used for FRP structural shapes, pultrusion process is one of the most widely used techniques in civil engineering applications. Pultrusion is a manufacturing process for producing continuous lengths of reinforced polymeric plastic structural shapes with constant cross-section. Pultruded composites are attractive for structural applications because of their continuous mass production with excellent mechanical properties. This paper presents the results of investigations pertaining to the bolted connection with two bolts for the pultruded FRP (PFRP) structural members. PFRP bolted connection tests were conducted with end distance to bolt diameter ratio (e1/db) and two types of bolt pattern such as horizontal (Pattern A) and vertical arrangement (Pattern B). As a result, it is found that the e1/db is recommended as the ratio of 4. In addition, it is also found that the bearing strengths at failure of the Pattern A and Pattern B have a similar value.

In everyday network changing field, permanent service is being an issue. Network disconnection phenomenon is directed to financial damage to service providers. Some companies guarantee on network maintenance, but there is a permitted limit according to their company regulations. If customers overuse the limitation, extra pay will be placed. Moreover, network disconnection affects critical in some fields with using network. Permanent service becomes indispensable in stock, finance, online game, and other fields. Additionally, it should be possible to pre-detect and block abnormal traffic area, improve network infrastructure secureness and optimization, and reduce damage recovery cost. MCS(Multi Connection System) can provide permanent service even if a connection is cut because it provides multi-connection. It can also isolate the attacker when it detects DDoS attack, so it provides smooth service. Also, the benefit from this structure is that the real server can be hidden so the service can be provided continuously. It prevents damages from network cutting, reduces management cost, maintains the best performance, and increases convenient on management and maintenance. Stable and continuous service can be provided with managing network through MCS.

Main topics in this study is a new structural detail for connection between H-Steel or SRC column and flat plate slab. We carried out to evaluate the punching shear performance of H-steel or SRC column + RC slab system for vertical load and lateral load. From the test results structural characteristics - yield moment, yield rotation, maximum moment, deformation capabilities ect. - are obtained and evaluated. In this paper as a shear reinforcement for supporting region of plate closed stirrup type and shear band are used, and their test results are compared.

An experimental study was carried out to evaluate the punching shear performance of H-steel column + RC slab system for vertical load. Three specimens were constructed for interior column-slab system. All specimens were the same configuration and material properties except for columns such as RC column+flat plate slab and H-Steel column+flat plate slab. From the test results structural characteristics (maximum proof stress, maximum displacement, deformation capabilities and so on) are obtained and evaluated.

In recent days composite bridge decks are increasingly used to new and rehabilitated bridges due to their many advantages such as light weight, high strength, high durability, low maintenance costs and fast installation. To further promote usage of composite bridge decks, the authors have developed decks of new profile having innovative vertical snap-fit connection. Through this development, significant enhancement of constructability and economy are obtained by overcoming the drawbacks of conventional composite decks of tongue-and-groove connection. The paper introduces some research results and notable applications for the developed composite decks of snap-fit connection using for pedestrian bridges. Owing to their considerable advantages of the developed composite decks, increasing number of applications is currently underway in Korea.

The flat plate slab system have many good features, which are design flexibilities, saving of story-height and economy of construction etc. But the study of flat plate slab system for H-steel column have been rare both at home and abroad. Recently high-rise residential and commercial buildings have been constructed in urban areas in Korea. The suggested dowel connection system is more likely to adoptable because it remarkably contribute to save inter story height and also to have many advantages compared with conventional steel works such as H-Steel frame + Deck plate slab system. This study aims at developing design method and program for connection between H-Steel column and flat plate slab system, which contribute to save significantly inter-story height.

Morphological and positional characteristics of anchovy aggregations, confirmed by trawling, were examined in two locations of the southern part of theWest Sea (T1) and the western side of South Sea (T11) of South Korea. Morphological characteristics (mean length, height and area) of the anchovy aggregations at T1 were smaller than those at T11, however the positional characteristics (distributional depth and bottom depth) of the aggregations at T1 were larger than those at T11. Diverse dataset such as the ship’s cruise track, the cruse map, and interpolated three-dimensional-like water temperature were visualized in multiple dimensions. For a comprehensive understanding of the anchovy aggregations within their surrounding circumstances, the interpolated water temperature transferred to the location of anchovy aggregations at both stations were visualized based on geospatial information. Using quantitative investigation, the overall range of change in water temperature and salinity of anchovy aggregations at stations was considerably small. However, the water temperature and salinity of anchovy aggregations at T11 were somewhat higher than those at T1.

For the artistic column used by Glass Fiber Reinforced Plastic(GFRP), the connection of steel with GFRP were needed. Due to the fabricating characteristics of hand laminating, GFRP surfaces had to be connected. Because there were no existed data of these connection, experimental study has to be followed so that the structural strength and buckling mode could be investigated. In this paper, therefore, the axial tests of steel with GFRP were performed. The connection of GFRP's surfaces could be also tested as well. As a result, it could be figured out that the strength of these connections were determined by the adhesive strength.

Cordyceps sensu lato contains more than 400 entomopathogenic and mycoparasitic species. It was traditionally classified in Clavicipitaceae of Hypocreales and recently phylogenetically separated into several genera such as Cordyceps Fr. 1818 emend. G. H. Sung et al.(Cordycipitaceae Kreisel ex Sung et al.), Elaphocordyceps G. H. Sung & Spatafora and Ophiocordyceps Petch emend. G. H. Sung et al.(Ophiocordycipitaceae G. H. Sung et al.), and Metacordyceps G. H. Sung et al . and Tyrannicordyceps Kepler & Spatafora (Clavicipitaceae (Lindau) Earle ex Rogerson). Some species of Cordyceps sensu lato (e.g., C. militaris and C. pruinosa) are highly regarded as medicinal mushrooms in East Asia. Beauveria species, on the other hand, are widely used as potential biocontrol agents for insects in agriculture and forest due to their wide host range and global distribution. A recently described Beauveria species, Beauveria sungii S.A. Rehner & Humber 2011, is here shown as the anamorph of Cordyceps scarabaeicola Y. Kobayasi 1976 based on the teleomorphic material and phylogenetic analysis of the B.sungii isolate KACC 47482. In Cordyceps sensu stricto clade, Cordyceps Fr. 1818 is an older generic name than Beauveria Vuill. 1912 .Hence ,C. scarabaeicola is suggested to be adopted for B. sungii on the priority basis of both generic name and species epithet in view of the recent revision of Article 59 of the Melbourne Code (recently changed to the ‘International Code of Nomenclature for algae, fungi, and plant’orICN). Based on one fungus = one name principle, all legitimate Beauveria species are also proposed to be transferred to Cordyceps. The consequences of abandonment of dual nomenclature for pleomorphic fungi are also briefly discussed with reference to Cordyceps and Beauveria.

The purpose of this study was to investigate the literature in connection with the names and recipes of japgwabyung recorded between 1392 and 2000. The names of japgwabyung were classified into eight types, including japgwabyung, japgwapyun, japgwajumbyung, japgwago, and japgwadanja. The names of japgwatteoks, classified with recipes, were Jjjin-tteoks, Chin-ttoks, and Salmeun-tteoks. The main ingredients used for japgwabyung were glutinous rice, nonglutinous rice, and buckwheat. The subsidiary ingredients were fruits, spices, seeds, and sweeteners. This study classified the names of japgwabyung, depending on the recipes, as japgwabyung, japgwapyun, japgwadanja, and japgwainjulmi. In addition this study classified recipes, depending on names, as steamed rice cakes made of sedimentary rice, steamed valley rice cake, steamed rice ]cakes with stuffs filled in and with bean powder dredged after striking, and steamed or struck rice cake with bean powder dredged. The main ingredients were glutinous rice and nonglutinous rice. The subsidiary ingredients were chestnuts, jujubes and dried persimmons, with other fruits being added according to taste.

장래에 어떠한 문제가 발생할 것인지를 현재의 시점에서 정확하게 예측할 수는 없지만, 그것이 사회질서를 규율하는 제도라고 한다면 불합리한 결과가 발생되지 않도록 그 위험성을 최소화할 수 있는 방법이 모색되어야 한다. 특히 저소득 한부모가족 지원제도는 최근에 새롭게 창출된 제도라는 점에서 종래에 발생한 문제점들을 면밀하게 파악한다면, 장래에 정립될 저소득 한부모가족 지원제도는 보다 합리적이고 실질적 정의에 합치될 수 있을 것으로 보여 진다. 이 논문의 연구대상인 한부모가족은 부자가족과 모자가족 이외에 조손가족과 그밖에 부모의 일방이 부모로서의 역할을 수행하지 못하는 경우까지를 포함하는 것으로서 주로 경제적 원인을 이유로 정의되는 것이다. 한부모가족을 지원하는 대표적인 법률인 한부모가족법은 종래의 모자복지법 내지 모부자복지법이 법명을 변경한 것이며, 이 법률에 기하여 한부모가족에 대한 지원은 점진적으로 확대되어 가고 있는 실정이다. 본고는 국민기초생활보장제도와 모, 부자복지제도에 의하여 보호받고 있고, 소득기준, 재산기준, 부양의무자기준 등으로 수급자로 선정되지 못한 차상위계층을 포함한 한부모가족을 대상으로 국민기초생활보장제도와 모, 부자복지제도를 분석하고 문제점을 도출하여 개선방안을 모색하기 위하여 저자는 제주지역의 저소득 한부모가족 지원제도와 관련한 현행 조례의 문제점을 중심으로 관련논점과 그 개선방향을 제시하였다.

This study investigates the difference between popular genre of mobile games and that of online games, and also the impact of affiliation with social network platform on the market performance. The results show that three genres such as action, puzzle, and RPG occupy a higher market share than the other genres. The structure of the mobile game market is more competitive than that of the online game market but game applications developed by top four developers - CJ E&M, NHN, com2us, WeMade - have been holding high ranks for months. It implies that the structure of the mobile game market is gradually becoming more concentrated. As the market competition increases, the marketing cost for acquiring recognition and the commission fee paying for platform have been increasing accordingly. Consequently, mobile game developers are encouraged to enhance the quality of their games as well as to devise diverse platform-marketing strategies in order to accomplish stable market performance.

In recent years, the construction of high-rise buildings are promoted. According to these, there are many needs about new technologies to strengthen the building performance and high-strength steel is regarded as one of these for promoting building performance. In Korea, high-strength steels which stress are over 600MPa are on market and in aborad, super high-strength steels over 1000MPa are developing and they expected to promote the building performance. But there are still doubts about applying high-strength steel members because of size effect and worry of brittle fracture. In this reports, we propose results of performance and analysis tests for use with general steel. We propose the characteristic of high-strength steels first and next the results of performance test to show they satisfy the performance that designers expect. And last, we compare the results of test and analysis for acquire the alanysis reliability in non-linear analysis with high-strength steels.

본 논문에서는 일체식 교대 교량의 장대화 및 내진성능 향상을 위해 가장 중요한 역할을 하는 교대-H형 강말뚝 연결부의 성능을 향상시키기 위하여 기존의 연결부의 균열형상을 파악하고, 이를 기반으로 새로운 형태의 연결부를 제안하기 위하여 철근을 활용하여 강성을 증가시키는 방법과 강말뚝의 형상을 개선하여 연성을 개선시키는 방법을 모색하였다. 먼저, 기존 연결부의 성능을 향상시키기 위하여 연결부 주변에 PennDOT에 규정된 철근상세와 나선철근의 배치와 HSS 튜브를 사용하였으나, PennDOT의 철근 상세와 HSS 튜브는 연결부의 성능을 향상시키지 못 했으나, 나선철근은 균열을 효과적으로 차단시키는 것을 확인할 수 있었다. 하지만, 철근의 구속효과로 인해 강말뚝의 저항력이 변위에 선형적으로 비례하여 증가하므로 교량의 상부구조에 축력을 발생시키는 효과를 가져왔다. 따라서, 강말뚝의 형상을 개선하기 위하여 콘크리트 교대에 매입된 부분의 플랜지를 제거하는 방법과 콘크리트 외부에서 플랜지의 폭을 축소시키는 형태를 검토하였다. 두 가지 방안 모두 균열을 억제하는데 효과적인 방법이었으나, 플랜지를 제거하는 쪽의 연결부가 더욱 효과적이었다.