• Journal of the Korea Society of Computer and Information
• /
• v.16 no.6
• /
• pp.143-153
• /
• 2011

The goal of Ubiquitous Sensor Network(USN) environments is to provide users high quality services based on a variety of sensors. In this environment, sensor devices, sensor nodes and sensor networks are heterogeneous and have various characteristics. Therefore it is important for interoperability to define a metadata for describing USN resources. The OGC(Open Geospatial Consortium) proposes SensorML(Sensor Model Language) as a standard language for modeling sensors. However, SensorML provides a framework for describing a processing model among sensors rather than describing information of sensors. Therefore, to describe a USN metadata is not main purposes of SensorML. This paper defines a USN metadata which describes information about sensor device, sensor node, and sensor network. Also the paper proposes a method for efficiently storing and searching the USN metadata and implements a USN metadata management system based on our method. We show that our metadata management system is reasonable for managing the USN metadata through performance evaluation. Our USN metadata keeps the interoperability in USN environments because the metadata is designed on SensorML. The USN metadata management system can be used directly for a USN middleware or USN application.

• Journal of KIISE
• /
• v.43 no.4
• /
• pp.450-459
• /
• 2016

Every year, RDFS data tends further toward scalability; hence, the manner of SPARQL processing needs to be changed for fast query. The query processing method of SPARQL has been studied using a scalable distributed processing framework. Current studies indicate that the query engine based on the scalable distributed processing framework i.e., Hadoop(MapReduce) is not suitable for real-time processing because of the repetitive tasks; in addition, it is difficult to construct a query engine based on an In-memory Distributed Query engine, because distributed structure on the low-level is required to be considered. In this paper, we proposed a method to construct a query engine for improving the speed of the query process with the mass triple data. The query engine processes the query of SPARQL using the SparkSQL, which is an In-memory based, distributed query processing framework. SparkSQL is a high-level distributed query engine that facilitates existing SQL statement. In order to process the SPARQL query, after generating the Algebra Tree using Jena, the Algebra Tree is required to be translated to Spark Algebra Tree for application in the Spark system, and construction of the system that generated the SparkSQL query. Furthermore, we proposed the design of triple property table based on DataFrame for more efficient query processing in the Spark system. Finally, we verified the validity through comparative evaluation with the query engine, which is the existing distributed processing framework.

• Journal of KIISE
• /
• v.42 no.12
• /
• pp.1522-1534
• /
• 2015

This work presents a new method that can predict, without the use of training data, whether an input essay is written on a given topic. ConceptNet is a common-sense knowledge base that is generated automatically from sentences that are extracted from a variety of document types. An essay prompt is the topic that an essay should be written about. The method that is proposed in this paper uses ConceptNet and an essay prompt to decide whether or not an input essay is off-topic. We introduce a way to find the shortest path between two nodes on ConceptNet, as well as a way to calculate the semantic similarity between two nodes. Not only an essay prompt but also a student's essay can be represented by concept nodes in ConceptNet. The semantic similarity between the concepts that represent an essay prompt and the other concepts that represent a student's essay can be used for a calculation to rank "on-topicness" ; if a low ranking is derived, an essay is regarded as off-topic. We used eight different essay prompts and a student-essay collection for the performance evaluation, whereby our proposed method shows a performance that is better than those of the previous studies. As ConceptNet enables the conduction of a simple text inference, our new method looks very promising with respect to the design of an essay prompt for which a simple inference is required.

• The Journal of the Korea Contents Association
• /
• v.20 no.1
• /
• pp.553-561
• /
• 2020

The purpose of this study was to identify the effects of an immersive virtual reality-based simulation learning program(IVR-SLP) on the communication competence and learning attitude of students with intellectual disabilities. To do this, 23 participants with intellectual disabilities were selected from 2 special schools. 11 students were placed in an experimental group and 12 students in a control group. An IVR-SLP, focusing on possible situations in a convenience store, was implemented within the experimental group and a traditional intervention program was implemented within the control group. The programs were conducted 5 times per week for 4 weeks and each session lasted approximately 40 minutes. Evaluations were carried out by using a pre- and post- test, and the results of the evaluation were analyzed using the independent t-test. The results of this study indicated that the communication competence of the experimental group showed greater improvement than that of the control group. In addition, the learning attitude of the experimental group became more positive than that of the control group. This implies that the immersive virtual reality-based simulation learning program can be a very effective tool for teaching language and communication skills to students with intellectual disabilities.

• Journal of Biomedical Engineering Research
• /
• v.18 no.4
• /
• pp.457-466
• /
• 1997

We developed a new hearing aid telephone which helps the hearing impaired person to improve the listening ability of telephone speech. Recently, the hearing impaired person and the elderly who has hearing loss have been continuously increased and their desire for participating society as a producer has been increased also. So they strong1y want the hearing aid devices which make compensation fortheir handicap. The hearing aid telephone is one of the basic aid devices that helps the hearing impaired to communicate well with other poeple and to acquire easily useful information through the phone. We analyze the hearing ability of the hearing impaired, design the new model of the hearing aid telephone and test the telephone in three fields-electrical, word perception, user test. Our new tolephone has lour band pass filter channels and the center frequencies of these filters are 500, 1000, 2000, 3000Hz which are considered psychoacoustic factors and telephone line characteristics. The hearing impaired can adjust the total gain characteristics of receiving sound to his hearing ability by setting four volumes in the telelphone. This procedure is called fitting which is a very important factor for the hearing impaired to take meaning of speech. The total gain of this telephone is over 20dB from 250Hz to 3200Hz range. From the results of the tests we certify that our new model is better for the hearing impaired to understand the meaning or telephone speech than the old general models. The next step of developing the hearing aid telephone is to study about compressing sidetone and noise, dividing frequency bands, selecting hearing aid pattern and compensating psychoacoustic loudness. we expect that the advanced hearing aid telephone can be developed by the research about speech perception characteristics of the hearing impaired in engineering and clinical side.

• The Journal of the Korea Contents Association
• /
• v.19 no.12
• /
• pp.362-375
• /
• 2019

Since Kim Dae-jung's administration, the Korean government has established policy for overseas Koreans to provide nationalism education to their descendants. While the policy is still in effect today, as to how the recipients of the support in the USA make meaning of the programs given much changes in the social climate in respect to Korean culture, has not been examined in-depth. Therefore, through in-depth interviews with Korean Americans, the current study examined how the recipients of the educational program perceive policy on education program towards Korean Americans and whether it has strengthened their nationalism or sentiment towards motherland. The study further examines the factors that influences their sentiments towards the motherland as identified by Korean Americans. The findings show that exposure to the culture and parents' teachings of the Korean values have helped them embrace Korean heritage. Moreover, findings revealed that their sense of Koreanness were due to positive memories from visits they had when they were young and changes in Korea's status in the global arena. Future direction of the policy and suggestion for specific programs for Korean Americans, as well as implications of the findings are discussed.

• Proceedings of The Korean Society of Health Promotion Conference
• /
• 2005.09a
• /
• pp.33-51
• /
• 2005

역량(capacity)이란 진술된 목표를 수행할 수 있는 능력을 의미하므로, 목표란 그 목표를 성취하기 위해서 요구되는 역량의 구체적 요소, 양, 질, 그리고 역량의 소재를 결정한다. 건강증진이란 문제를 파악하고 해결하기 위한, 그리고 조직이나 사람들이 그들의 목표를 성취하기 위한 응용과학으로 발전되어 왔다. 문제를 분석하고, 문제의 원인이나 결정요인들을 파악하고, 그리고 해결책을 제시하고 이를 실행하는데 있어 효과적인 방법론이 중요하다는 점도 또한 밝혀졌다. 그러므로 효과적인 건강증진의 토대가 되는 방법론은 건강을 증진을 위한 역량으로 정의될 수 있을 것이다. 목표는 매우 중요한 역할을 한다. 평균 기대수명을 향상시키는데 요구되는 능력은 생물학적인 그리고 행동적 건강위험을 감소시키는데 필요한 능력과는 다르다. 그리고 질병의 발생을 예방하고, 또는 상해를 예방하거나 모든 사람들이 좋은 건강상태를 얻고 유지하는데 동등한 기회를 갖는 환경을 조성하는 능력도 다른 특성을 지닌다. 방콕헌장은 현 단계의 건강증진을 위하여 건강에 대한 사회적 결정요인에 대한 해결책과 더불어 건강에 도움이 되는 사회적, 경제적, 그리고 물리적 환경을 조성하여 건강형평성을 달성하고자 하는 목표를 설정하고 있다. 지난 30년간 건강증진을 위한 역량에 대하여 많은 것들을 배울 수 있었다. 이러한 역량을 기르고 확대하는 것이 미래를 위한 도전과제가 되며, 비록 우리가 성취한 것이 많지는 않을지라도, 더 많은 것들이 필요하다는 점은 명백해졌다. 우리는 좀 더 야심 찬 목적을 가져야 하며, 이러한 목적달성을 위하려 좀더 의욕적인 노력을 해야 할 것이다. 전문분야로서 건강증진은 다른 사람들에 의하여 발생된 문제에 대한 대책이나 반응에만 중점을 둔 이방인으로서의 역할을 해왔다. 그러나 우리가 도전해야 할 과제는 좀 더 새롭고, 더욱 야심 찬 활동계획을 설정하고 우리가 건강해지고 건강을 유지하는데 필요한 생활환경, 작업환경, 여가환경, 영적 환경을 모든 사람들에게 제공할 수 있는 가족, 지역사회, 그리고 국가가 있는 세계를 만드는 우리사회의 능력들을 신장하는 것이다. 방콕 헌장은 건강증진을 위한 새로운 일련의 목표들을 제시하고 있다. 이제 이러한 목표를 성취할 수 있도록 역량을 기르는 것은 우리의 책임이 되었다. 이는 원하는 활동수준을 달성하기 위한 역량을 조율하고 확장시키는 것을 의미할 것이다. 구체적으로 기존의 건강증진효과성에 관한 증거들을 좀더 큰 규모의 사업으로 확대시키는 것, 공공정책을 개발하고 건강증진 상태를 평가하는 데 다양한 지역사회의 참여를 촉진시키는 능력, 언어, 인종, 성, 종교, 장애 등과 관련된 건강형평성의 문제를 파악하고 제거하는 노력, 그리고 정책결정과 인구집단의 건강과의 관련성에 대한 증거수집, 국가와 지역차원에서 사회적 의사결정 과정에의 적극적 참여, 다른 부문과의 건강증진을 위한 협력 등이 포함된다고 볼 수 있다. 본 논문은 방콕헌장을 분석함으로써 이러한 역량이란 무엇인가에 대한 본인의 의견을 제시하였다. 이러한 아이디어는 토론과 논쟁을 위하여 제시된 것이다. 명백한 것은 건강증진을 위한 역량은 전략이나 기술적인 능력 뿐 만이 아니라 정치적 능력이나 개인적인 능력도 포함된다는 점이다. 가치와 증거들이 정책이나 권력과 함께 결합되어야하며, 정치적인 논쟁 속에서 연마되어야 한다. 우리세계의 미래는 역량에 의존하기 때문이다.

• The Journal of Korean Academy of Sensory Integration
• /
• v.15 no.2
• /
• pp.93-106
• /
• 2017

Objective : The purpose of this study is to provide an evidence for clinical practice by systemic analysis on occupational therapy interventions for improvement of children's play. Methods : Articles used in this study were collected from database of Pubmed, ProQuest, EBSCOhost, Scopus, RISS, KISS, and National Library of Korea. The key words used in the search were "Play AND Occupational Therapy AND (Intervention OR Treatment)" and the publication period was limited from January 2007 to April 2017. 11 articles in total were selected for the systematic review analysis. Results : The results revealed that the majority of studies was one-group non-randomized study and the majority of intervention used was play-based intervention in case of that play itself was the intervention goal. The most frequently used environment for the intervention was parallel setting of home and treatment room. The majority of studies was for children with ADHD and the most commonly used assessment tool was Test of Playfulness (ToP). Dependent variables measured along with play were language skills, social interactive skills, communication and pragmatic skills, problem-solving skills, caregiver responsiveness, and parent-child interaction. Conclusion : This study help to understand the current state of occupational therapy intervention for improvement of children's play. Starting with the understanding, it is expected that various studies on play of children will be done in the future.

• The KIPS Transactions:PartA
• /
• v.15A no.2
• /
• pp.125-134
• /
• 2008

We implemented a system being able to suggest example sentences for multiple choice tests, considering the level of students. To build the system, we designed an automatic method for sentence generation, which made it possible to control the difficulty degree of questions. For the proper evaluation in the multiple choice tests, proper size of question pools is required. To satisfy this requirement, a system which can generate various and numerous questions and their example sentences in a fast way should be used. In this paper, we designed an automatic generation method using a linguistic resource called WordNet. For the automatic generation, firstly, we extracted keywords from the existing sentences with the morphological analysis and candidate terms with similar meaning to the keywords in Korean WordNet space are suggested. When suggesting candidate terms, we transformed the existing Korean WordNet scheme into a new scheme to construct the concept similarity matrix. The similarity degree between concepts can be ranged from 0, representing synonyms relationships, to 9, representing non-connected relationships. By using the degree, we can control the difficulty degree of newly generated questions. We used two methods for evaluating semantic similarity between two concepts. The first one is considering only the distance between two concepts and the second one additionally considers positions of two concepts in the Korean Wordnet space. With these methods, we can build a system which can help the instructors generate new questions and their example sentences with various contents and difficulty degree from existing sentences more easily.

• KIPS Transactions on Software and Data Engineering
• /
• v.2 no.8
• /
• pp.543-554
• /
• 2013

Model-Driven Development(MDD) helps developers verify requirements and design issues of a software system in the early stage of development process by taking advantage of a software model which is the most highly abstracted form of a software system. In practice, however, many software systems have been developed through a code-centric method that builds a software system bottom-up rather than top-down. So, without support of appropriate tools, it is not easy to introduce MDD to real development process. Although there are many researches about extracting a model from code to help developers introduce MDD to code-centrically developed system, most of them only extracted base-level models. However, using concept of abstract component one can continuously extract higher level model from base-level model. In this paper we propose a practical method for automatic extraction of base level abstract component from source code, which is the first stage of continuous extraction process of abstract component, and validate the method by implementing an extraction tool based on the method. Target code chosen is the source code of TinyOS, an operating system for wireless sensor networks. The tool is applied to the source code of TinyOS, written in nesC language.