• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2007년도 동계학술발표대회 논문집
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• pp.404-409
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• 2007

For a hermetic reciprocating compressor, it has been known that the gas pulsation in the suction line affects the compressor performance, and suction muffler design has been focused on both of noise reduction and minimum pressure drop across the muffler. Some studies have been carried out on the mutual interaction between the gas pulsation and the cylinder pressure to investigate some supercharging effects, but their efforts were limited on rather simple geometries. In this paper, interaction of the gas pulsation in the compressor suction line with cylinder pressure via suction valve motion has been calculated; for the gas pulsation analysis, modeling of Helmholtz resonators in series was used, and for cylinder pressure calculation, energy equations was set up for the gas inside the cylinder. For demonstration of this calculation method, four different types of suction line configurations for a hermetic reciprocating compressor were compared in terms of compressor performance and gas pulsation level.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 1999년도 추계종합학술대회
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• pp.395-400
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• 1999

DNC(Direct Numerical Control) Network을 위한 프로그램을 효율적으로 하기위해 현재 많은 시스템들이 개발되어 사용되고 있다. 그러나 이 시스템들은 원거리 상의 컴퓨터와 머시닝센터간의 상호 연결이 원만하지 않아 작업에 비효율적인 면이 있고, 또 머시닝 센터에서의 데이터 송 수신에서 일어나는 오류 문제에 대한 시스템으로의 적절한 대처를 할 수가 없다는 문제점이 있다. 그래서, 본 논문에서는 DNC Network을 통해 리C(Numerical Control) 선반 제어기에서 컴퓨터의 데이터를 오류 없이 수신 가능한 데이터 원격 제어 시스템을 새로이 구성하였다. 이 데이터 원격 제어 시스템의 주요 장점으로는 머시닝 센터에서 운영자가 쉽게 컴퓨터에 저장된 NC 데이터 호출과 송출이 자유롭고, 컴퓨터와 공작기계간의 상호 대화가 없이도 NC 기계상에서의 원격 제어(Remote Control)가 가능하다.

• 융합신호처리학회논문지
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• 제1권2호
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• pp.145-152
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• 2000

DNC(Direct Numerical Control) 네트워크 시스템에 대한 프로그램을 효율적으로 하기 위해서 현재 많은 시스템들이 개발되어 지고있다. 그러나 이 시스템들은 원거리 상의 컴퓨터와 머시닝 센터간에 상호연결이 원만하지 않아 작업에 비효율적인 면이 있고, 또 머시닝 센터의 데이터 송$\cdot$수신에서 오류가 발생되면 시스템에서 운영자가 적절한 대처를 할 수가 없다는 문제점이 있다. 그래서, 본 논문에서는 DNC Network을 통해 NC Controller에서 컴퓨터의 데이터를 오류가 없이 수신이 가능한 데이터 원격제어 시스템을 새로이 구성하였다. 이 데이터 원격제어 시스템의 주요 장점으로는 머시닝 센터에서 운영자가 쉽게 컴퓨터에 저장된 NC데이터의 호출과 송출이 자유롭고, 컴퓨터와 공작기계간의 상호대화가 없어도 NC기계 상에서 원격제어(Remote Control)가 가능하다.

• 한국유기농업학회지
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• 제30권1호
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• pp.51-74
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• 2022

This study aimed to identify a difference in project implementation between villages that had executed rural village community activation support work successfully and those that had quit in the middle from the new endogenous development theory perspective. As a result, it was found that the main factors used for promoting to increase endogeneous development capabilities existed more in villages that executed project implementation support work successfully than in villages that had quit in the middle. Successful villages have a difference from the villages that had quit in the middle in that they have established a participatory decision making and cooperation system for stable operation even before their support work began, they have more assets for promoting community activity, residents' interaction and communal activity are becoming more active, and reciprocity-based mutual aid culture exists in many forms. In conclusion, seeing from the new endogenous development theory perspective, villages are developed under the interaction between internal and external factors, but the outcome of project implementation depends on whether village community holds its endogenous development capability to operate and develop such whole process of development. Therefore, village community activation policies need to be reinforced in the direction toward promoting to create the main factors for enhancing endogenous development capabilities.

• Educational Technology International
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• 제13권1호
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• pp.207-231
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• 2012

The purpose of this study is to analyze the effects of Critical Thinking Strategy supporting argumentation activities between learners. The research question is whether the form of Critical Thinking Strategy offered to support meaningful interaction of collaborative argumentation between learners influences the knowledge acquisition, learning outcome, and student satisfaction. For this, the collaboration outcome of the group, the level of individual knowledge acquisition, the level of students satisfaction were measured as outcome of argumentation activity and their differences analyzed. This study concludes the following: A comparison of the group that was provided with Critical Thinking Strategy (test group) and the group provided with general argumentation scaffolds (compared group) showed there wasn't statistically significant differences in the quality of the learning outcome of collaboration between the groups and in students satisfaction. But there was significant difference in the degree of individual acquisition depending on the offering of scaffolding for Critical Thinking. Therefore, as premised in this study, supporting meaningful mutual interaction between learners during collaborative argumentation using Critical Thinking Strategy has a positive influence on the individual acquisition of domain knowledge. The group provided with scaffolding for Critical Thinking gained higher effect in the degree of knowledge sharing and individual acquisition of domain knowledge compared to the group provided with general argumentation scaffolding.

• 융합경영연구
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• 제12권1호
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• pp.39-51
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• 2024

Purpose: This study aims to derive planning directions of community facilities integrating generations based on local communities to promote sustainable intergenerational exchange by analyzing the spatial configuration and programs of domestic and foreign generation-integrated community facilities based on local communities. Research design, data and methodology: Through theoretical consideration, the concept of intergenerational integration, types of intergenerational exchange, and spatial arrangement types were identified. Then, case study analysis of domestic and foreign community facilities with well-planned intergenerational exchange spaces and programs were conducted to identify intergenerational integration, and to derive community facility planning direction. Results: The results of this research are as follows. First, in terms of humanware, in order to revitalize continuous exchange between the 1st, 2nd, and 3rd generations, a systematic support system is needed to build mutual trust through voluntary participation by each generation. Second, it is important to provide a variety of shared spaces while maintaining the uniqueness of each facility from a hardware perspective, and must be planned in such a way that selective interaction takes place with privacy and interaction in mind. Third, in terms of software, programs that meet the characteristics of each user must be provided. Conclusions: It is expected that the results of this research can be used as basic data for planning community facilities that integrate generations based on local communities, contributing to the search for sustainable ways to revitalize intergenerational exchange in the future.

• International journal of advanced smart convergence
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• 제12권4호
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• pp.306-313
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• 2023

Having pet is one of the activities people living in modern society do to relieve stress and find peace of mind. Currently, the object of companion animals has moved beyond being a real 'living entity' and has developed to a stage where the animal's upbringing process can be enjoyed in a virtual space by being programmed in digital content. This paper studies detailed elements such as character design, interaction, and realism of 'Tamagotchi (1996)', which can be said to be the beginning of digital training content, and 'Peridot (2023)', a recently introduced augmented reality-based training content. The point was that it was training content using portable electronic devices. However, while the environment in the electronic device in which Tamagotchi's character exists was a simple black and white screen, the environment in which Peridot's character operates has been changed to the real world projected on the screen based on augmented reality. Mutual communication with characters in Tamagotchi remained a response to pressing buttons, but in Peridot, it has advanced to the point where you can pet the characters by touching the smartphone screen. In addition, through object and step recognition, it was confirmed that the sense of reality had become more realistic, with toys thrown by users on the screen bouncing off real objects. We hope that this research material will serve as a useful reference for the development of digital training content to be developed in the near future.

• 한국보육학회지
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• 제18권4호
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• pp.91-108
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• 2018

본 연구는 신체접촉놀이와 공감적 소통능력을 위한 상담교육을 통합한 부모상담교육 프로그램을 개발하고, 모-자 상호작용, 양육 및 놀이에 대한 모의 인식 변화를 알아봄으로써 그 효과를 밝히고자 하였다. 공감적 소통능력으로 반영하기, 나-전달법과 제한설정, 서로 승자되기를 상담과 병행하여 교육하였으며, 신체접촉놀이를 통한 즐거움을 공유하는 경험을 포함하였다. 연구대상은 G시 A유치원에 재원 중인 유아 11명의 어머니를 대상으로 매회기 90분간, 매주 1회씩 총 8회기 부모상담교육 프로그램을 실시한 후, 7회기 이상 참석한 어머니 6명을 대상으로 분석하였다. 모-자 상호작용은 취학전/학령기 아동용 Marschak Interaction Method(MIM)로 평가하였으며, 양육 및 놀이에 대한 인식변화는 반구조화된 설문지로 조사하였다. 연구결과, 부모상담교육 프로그램에 참가한 후 모-자 상호작용에서의 긍정적인 변화가 나타났다. 즉 어머니의 상호작용이 보다 양육적이고 개입적으로 변하였으며, 구조를 제공하면서 유아의 도전을 촉진하는 상호작용이 증가하였다. 또한, 지시나 가르치려는 상호작용보다는 유아 주도의 상호작용이 증가하였고, 기다려주는 시간이 늘고 유아의 노력을 격려하는 반응이 증가하였다. 한편, 프로그램 참가 후 양육에 대한 행복감, 가치감, 자신감이 높아졌으며, 놀이에 대한 인식이 보다 긍정적으로 변화한 것으로 나타났다. 본 연구는 놀이와 상담과 교육을 통합했다는 점에서 의의가 있으나 사례중심의 질적 변화를 비교분석했다는 점에서 추후 연구의 필요성이 논의되었다.

• 만화애니메이션 연구
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• 통권33호
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• pp.343-361
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• 2013

본 논문은 영화와 설치 예술 작품의 상호관계성을 도출하고자 구체적인 사례 분석을 통해 두 장르가 교차되는 지점에 대해서 살펴본다. 영화와 설치 예술의 관계는 회화와 사진의 관계성부터 시작하여 1920년대 무성영화와 예술 작품의 연관성을 살펴보는 작업까지 거슬러 올라가야할 필요가 있다. 이후에는 회화 작품을 넘어 설치 예술 작품과의 관계성 모색을 통해 영화의 미장센, 즉 화면 구성 및 배치 혹은 영화적 이미지를 위해 예술 작품을 영화에 응용하는 사례를 찾을 수 있다. 본 연구는 먼저 2장에서 영화와 예술 작품 사례 분석을 통해 두 장르간의 상호관계성에 대한 근거 사례를 확보한다. 3장에서는 영화 '원더풀 라이프'와 설치 예술 작품 '수공기억'의 두 사례 분석을 통해 구체적으로 교차되는 지점에 대해서 분석한다. '원더풀 라이프'와 '수공기억'은 각각 작품 주제와 개념적 측면에서 '기억'에 대한 표현이라는 점은 유사하지만, 영화와 설치 예술이라는 장르적 차이로 인한 매체 표현 방식의 상이함으로 인해 결과물의 형태는 다르게 나타난다. 그렇다면 본 연구는 영화 사례와 설치 예술 작품 사례의 비교 작업을 통한 상호관계성을 도출하기 위해 두 사례를 각각 분석함으로써 세부적으로 무엇이 다르며 어떠한 점에서 유사성이 있는지 살펴본다.

• 복식문화연구
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• 제19권3호
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• pp.597-611
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• 2011

The purpose of this study is to propose a design method for one-piece dress patterns with high body fitness through an appearance evaluation of one-piece dress patterns with the application of the 3D Virtual Clothing System known as i-designer. Measures consisted of an optical illusion effect in visual imagery and mutual influence according to a change in the length and princess line, in a silhouette of a one-piece dress. The data was assessed by a t-test and a multi-way ANOVA and factor analysis using SPSS 17.0. The results were as follows; The design of the study pattern was done by modifying the ease of the bust circumference, ease of the abdominal circumference, ease of the hip circumference, the position of the side seam line, and the appearance of horizontality in the hem line, which received a low evaluation in appearance evaluations of a one-piece dress pattern. As a result of analyzing the visual image according to a change in the length and princess line, in the form of a silhouette of a one-piece dress, four factors were selected; the whole-body optical illusion factor, the upper-body optical illusion factor, the bust optical illusion factor, and the lower-body optical illusion factor. As a result of analyzing the effect of the interaction in the visual image according to the design variables, the influence of the main effect was found to be great in each factor. In the upper-body optical illusion factor, a significant difference was not noted in the two-way interaction between the length and the princess line. However, the influence on three-way interaction among the length, princess line, and silhouette was significant.