• Journal of KIISE
• /
• v.44 no.6
• /
• pp.595-600
• /
• 2017

Android applications are composed of one or more components. The components within an application or several applications may interact with each other primarily through intents. Such interactions may cause security and reliability issues such as broadcast theft, activity hijacking, and intent spoofing. These problems need to be resolved through testing techniques using various interaction test scenarios before an application gets launched. However, with the existing test scenario generation approach, some infeasible test scenarios may be generated since they do not consider the re-execution order based on activity setting when pressing the back button. This paper proposes a test case generation technique which removes infeasible interaction paths by utilizing the activity stack information.

• Korean Journal of Logic
• /
• v.18 no.1
• /
• pp.83-133
• /
• 2015

In this paper, I pose a problem for Hitchcock's arguments for two concepts of effects that are intended to explicate double causal effects, and put forth a theory that is intended not just to meet the problem but also to accommodate Hitchcock's theory and Eells' theory both. First, I introduce an example of dual causal effects, and examine the accounts of Otte(1985) and Eells(1987) on how to explicate the dual effects. I show that their accounts of the dual effects help us understand the problem of dual effects and see how different it is for Cartwright(1979, 1989, 1995), Eells(1991, 1995), and Hitchcock(2001a) to meet the problem. Second, I introduce two concepts of effects on Hitchcock(2001a), that is, net effect and component effect that are allegedly analogous to two effects of structural equation model. Third, I reveal the significance of homogeneous subpopulation and causal interaction regarding the problem of dual effects while examining Cartwright's theory and Elles' theory. Fourth, I critically examine the two concepts of effects on Hitchcock and argue against Hitchcock's criticism of Eells' theory. Fifth, I take a moderator variable of structural equation model and a moderator effect into the probabilistic theory of causality, and formally generalize causal interaction due to the dual effects in terms of disjunctive relation and counterfactual conditionals. I expect my account of disjunctive relation and counterfactual conditionals to contribute not just to several problems the received theories of causal modelling confront but also to the structural equation models many people exploit as a promising statistical methodology.

• The Journal of the Korea Contents Association
• /
• v.18 no.10
• /
• pp.203-216
• /
• 2018

The purpose of this study is to clarify what teachers interaction is who try to develop their infants, by examining the intention of beginning the interaction between teachers and their infants, while playing freely at a child care center. The author used a qualitative research method. The subjects of this study are nine infants and three teachers. The author videotaped all the session focusing on the interactions between teachers and their infants. The author observed all the sessions for three months. The author also interviewed the teachers. She also collected the manual of the target daycare centers, its study plans, its observation logs, and the observation logs of the infants' activities and analyzed them. The intention of infants' interaction with their teachers is to know how to play by using some toys. A second intention is to see the contents of the picture book related to the daily routine. A third intention is to satisfy emotional needs. The intention of teachers interaction with their infants while playing freely is to help explore things and try to play. Another intention is to make a transition from teacher-centered play to infant-centered one. A third intention is to pacify infants expressing thoughts by crying. A future research which will increase the quality of the interactions and will be helpful for the development of infants and will focus on infants will be needed.

• Korean Journal of Food Science and Technology
• /
• v.23 no.3
• /
• pp.330-335
• /
• 1991

The values of water activity in the different concentrations of NaCl and sodium lactate were measured by hygrometer in the water-sorbitol systems. Interaction of NaCl and sodium lactate was evaluated by Raoult's law. The discrepancy between experimental and theoretical value by the Raoult's law was defined as interaction between water-sorbitol and added solutes in the systems. The changes of interacted water and solutes were observed in whole range of water activity. The value of interacted water (water: sorbitol=1 : 1.1241) obtained by added sodium lactate was found to be higher than sodium chloride. The amount of interacted solute reached maximum about Aw 0.87, while the interactions between added solute and sorbitol showed an increasing tendency below Aw 0.87.

• KOREAN POULTRY JOURNAL
• /
• v.28 no.9 s.323
• /
• pp.144-151
• /
• 1996

밀과 같은 곡류를 기본으로 하는 사료내에 질란아제(Xylanase)효소의 첨가는 사료효율을 향상시킨다. 어떤 종류의 성장촉진제와 질란아제 효소와의 결합된 첨가는 실행에 있어서 누가적(累加的)인 효과를 보여주는 실험이 증명됐다.

• Proceeding of EDISON Challenge
• /
• 2017.03a
• /
• pp.158-164
• /
• 2017

암을 억제시키는 기능을 하는 단백질로 잘 알려진 p53은, 주로 종양세포에서 과도하게 발현되는 단백질인 HDM2와 복합체를 형성하여 비활성화되고 항암기능을 상실하게 됩니다. 때문에 종양세포에서의 p53-HDM2의 상호작용을 억제하기 위해 현재까지 많은 연구가 진행되어왔으며, 다양한 p53-HDM2 억제제가 개발된 바 있습니다. 최근 연구들에 따르면, HDM2와 결합친화도를 높이고 소수성 작용(hydrophobic interaction)에 기여하여 보다 안정한 구조를 만드는 탄화수소체인(staple)을 연결시킨 펩타이드 설계에 대한 관심이 높아지고 있는 추세입니다. 이에, 본 연구에서는 분자동역학 모의실험을 통해서 얻은 탄화수소체인-p53과 비탄화수소체인-p53 및 각각의 HDM2와 결합한 복합체를 기반으로 EDISON의 용매화 자유에너지(Solvation Free Energy) 프로그램을 이용하여 탄화수소체인의 특징 및 역할을 구조적인 측면과 열역학적인 측면으로 분석하여 비교하고자 합니다. 우리 연구에서 비탄화수소체인-p53의 구조는 분자동역학 시뮬레이션을 수행하는 동안 나선구조형태로 풀려 HDM2와 결합 유도 시에 주요결합 아미노산 잔기가 올바른 결합부위와 상호작용하지 못한 결과를 확인한 반면, 탄화수소체인이 형성된 구조는 시뮬레이션 동안에도 펩타이드의 나선구조를 유지시켜 HDM2와 주요 결합을 형성하는 아미노산 잔기들을 올바른 방향으로 배치시켜 HDM2와의 결합친화도를 높였습니다. 이 연구 결과는 탄화수소체인이 펩타이드의 나선성을 유지시키고, HDM2와의 상호작용을 통한 구조적인 안정성 유도 및 용매화 자유에너지에 큰 기여를 통해 p53-HDM2상호작용 억제제에서 긍정적인 역할을 할 가능성을 보여줍니다.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.36 no.4
• /
• pp.213-221
• /
• 2018

South Korea has been reluctant to open its geospatial information overseas to ensure security as a divided country. However, this cannot continue as the domestic and international environments related to geospatial information and the industrial ecosystem of information and communication technologies have been changing dramatically. Within this context, this study aims to analyze the causal relations among relevant variables and how they change and interact with time using a systems thinking process. First, causal maps were created for the domains of national security, map-based convergence service, and corporate competition. Then, the causal maps for each domain were integrated, based on which the points for policy intervention and dominant feedback loops were identified. The analysis results showed that securing the self-sufficiency of domestic geospatial businesses is a key element to determine the whole causal map, and the variable that changes the dominant feedback loop from a vicious circle to a virtuous one is the decision to open geospatial information overseas. In this study, I found the policy leverage that is a policy intervention point that can produce a great effect with little input by building a causal map of the interactions between major variables. This study is significant in that it identified and analyzed the dominant feedback loop as to which causal structure would dominate the system in the long term. The results of this study can be used to discuss not only the impacts of map data overseas opening on the national security and geospatial information industry, but also the interactions in the future when Google or other global companies request to release the geospatial information.

• Korean Journal of Childcare and Education
• /
• v.9 no.1
• /
• pp.101-128
• /
• 2013

This study investigated the interactions between infants of differing natures and teachers in a nursery, and to find the right way to foster the relationship. This study was carried out for 13 weeks, in a class consisting of eight children between one and two years old and with two teachers. The sources of data collection included observations, interviews with teachers, taking videos and voice recording. The results were as follows. (1) Infants with different natures show different reactions in the same situation and it affects the interaction between them and the teachers. (2) The types of interactions among infants with different natures are distinct and the interaction is influenced by factors other than just their nature. A constant interaction between infants and teachers based on the natures of infants and situational reacting strategies toward infants tremendously influence infants' development.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2013.01a
• /
• pp.219-220
• /
• 2013

웹은 초기에 단순한 정적인 문서정보를 공유하는 형태에서 동적 상호작용을 하는 형태로 발전되어 왔다. 특히 HTML5의 출현으로 기존의 HTML에서는 외부 플러그인을 통해서만 구현할 수 있었던 오디오/비디오 등의 멀티미디어 및 SVG와 캔버스를 이용한 2D/3D 그래픽 처리가 가능하게 되었다. 또한 HTML5와 Javascript를 통해 유저와의 상호작용 처리가 강화되었다. 본 논문에서는 이러한 HTML5의 특징을 기반으로 게임을 개발하기 위한 프레임워크를 설계하고 구현하였다.

• The Journal of the Korea Contents Association
• /
• v.20 no.7
• /
• pp.30-46
• /
• 2020

New media is rapidly changing with the recent development of the technology of transmitting, producing, editing, and sharing video information. This study investigates the effects of one person media broadcasting use motivation and social viewing on consumer attitudes toward brand, brand engagement, and purchase intention. It was fond that motives such as differentiation, social interaction with other viewers, mutual interaction with BJ, information-seeking, and new fun-seeking positively affected brand attitudes. Also, the same motives except fun-seeking positively affected brand engagement. Only mutual interaction with BJ and information-seeking were found to be positively related to purchase intention. Meanwhile, para-social relationships, social presence, and subjective norm positively influenced on brand attitudes and purchase intention each. Also, para-social relationships and social presence were positively related to brand engagement. Theoretical and practical implications, and suggestions for future studies are discussed in detail.