• 생체재료학회지
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• 제22권4호
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• pp.303-310
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• 2018

Background: Photodynamic therapy (PDT) is photo-treatment of malignant or benign diseases using photosensitizing agents, light, and oxygen which generates cytotoxic reactive oxygens and induces tumour regressions. Several photodynamic treatments have been extensively studied and the photosensitizers (PS) are key to their biological efficacy, while laser and oxygen allow to appropriate and flexible delivery for treatment of diseases. Introduction: In presence of oxygen and the specific light triggering, PS is activated from its ground state into an excited singlet state, generates reactive oxygen species (ROS) and induces apoptosis of cancer tissues. Those PS can be divided by its specific efficiency of ROS generation, absorption wavelength and chemical structure. Main body: Up to dates, several PS were approved for clinical applications or under clinical trials. $Photofrin^{(R)}$ is the first clinically approved photosensitizer for the treatment of cancer. The second generation of PS, Porfimer sodium ($Photofrin^{(R)}$), Temoporfin ($Foscan^{(R)}$), Motexafin lutetium, Palladium bacteriopheophorbide, $Purlytin^{(R)}$, Verteporfin ($Visudyne{(R)}$), Talaporfin ($Laserphyrin^{(R)}$) are clinically approved or under-clinical trials. Now, third generation of PS, which can dramatically improve cancer-targeting efficiency by chemical modification, nano-delivery system or antibody conjugation, are extensively studied for clinical development. Conclusion: Here, we discuss up-to-date information on FDA-approved photodynamic agents, the clinical benefits of these agents. However, PDT is still dearth for the treatment of diseases in specifically deep tissue cancer. Next generation PS will be addressed in the future for PDT. We also provide clinical unmet need for the design of new photosensitizers.

• 정보교육학회논문지
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• 제17권2호
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• pp.167-175
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• 2013

본 연구에서는 차세대 전력망인 Smart Grid와 STEAM교육의 연구 사례를 살펴보고 이를 토대로 초등학교 3-4학년을 위한 Smart Grid기반 IT주제의 STEAM 교육프로그램과 수업방안을 제시한다. 3-4학년의 지적 발달 수준과 흥미를 고려하여 교육프로그램을 구상하고 이에 따른 교재와 교사용 지도서를 개발하였다. 개발된 교재의 실효성을 검증하기 위해 제주도내 4학년 학생 10명을 대상으로 6차시동안 단계별로 교육을 진행하였다. 향후 추적연구 및 확대 적용이 이루어질 예정이며, IT기반의 STEAM교육을 지도함으로써 좋은 효과를 얻을 수 있을 것으로 기대된다.

• Journal of information and communication convergence engineering
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• 제9권1호
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• pp.1-5
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• 2011

Everyday, technology is evolved in many different disciplines. Computer and smart devices revolution take part of the evolved technology that continuously promising new features. Moreover, social networks services recently become widely popular, which most people in the world become a social-network-fond. In addition to the revolution of the evolved technology and social networks services, ubiquitousness is taking significant part in our daily lives. Although, there are many e-learning systems already existed, which use Internet technology along with a Web technology to provide education in various ways, in despite of that, there is no such existing system exploits the usefulness of smart devices along with the legacy of the online social networks besides the power of the ubiquitous computing technology. Therefore, we propose a smart device application, which fills the gap that has been missing in the recent contemporary era. It is an application that runs on smart devices particularly Smartphone devices; we call our system “Smart Device based Social E-learning System(SDES)”. We have preliminary implemented our system on Android OS. In this paper, we intentionally propose the system in order to ease the way people learn, to provide interactive accessibility in our system, and to utilize the advanced technology more wisely.

• 한국IT서비스학회지
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• 제23권2호
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• pp.13-29
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• 2024

Recently, with the rapid spread of mobile terminals such as smartphones and tablet PCs, social demand for mobile information security is increasing as new security issues that are difficult to predict as well as service evolution and lifestyle changes are raised. Smart terminals include smartphones, smart pads, chromebooks, laptops, etc. that provide various functions such as phone calls, text messages, Internet browsing, social media apps, games, and education. Along with the explosive spread of these smart terminals, they are naturally being used in our daily life and educational environment. In the mobile environment, behind the convenience of portability, there are more various security threats and vulnerabilities than in the general PC environment, and threats such as device loss, information leakage, and malicious codes exist, so it is necessary to take fundamental security measures at a higher level. In this study, we suggest ways to improve security by identifying trends in mobile smart information security and effectively responding to security threats to the mobile environment. In addition, it presents implications for various measures for effective class utilization along with correct security management methods and security measures related to the supply of smart devices that the Office of Education is promoting for schools at each level.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2014년도 추계 종합학술대회 논문집
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• pp.113-114
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• 2014

미국 등 유럽에서는 UDL이 유치원에서부터 대학 교육까지의 모든 과목에 소개되어 모든 학습자가 소외됨 없이 수업에 참여하고, 학습효과를 얻고 있는 실정에 비하여 우리나라는 아직 UDL의 개념조차 교과교육계에 소개되어 있지 않고 있다. 이에 UDL을 통해 최근 교육계의 최대 이슈인 스마트 교육의 이론적 기반을 다지고, 더 나아가 UDL을 통해서 본 스마트 수업관찰 도구를 개발함을 본 연구의 목적으로 한다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 1996년도 춘계학술대회논문집; 부산수산대학교, 10 May 1996
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• pp.130-135
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• 1996

This paper presents a proof-concept investigation on the active vibration control of two hybrid smart structures (HSSs). The first one is consisting of a piezoelectric film (PF) actuator and an electro-rheological fluid(ERF) actuator, and the other is featured by a piezoceramic (PZT) actuator and a shape memory alloy (SMA) actuator. For the PF/ERF hybrid smart structure, both the increment of the damping ratios and the suppression of the tip deflections are evaluated in order to demonstrate control effectiveness of the PF actuator and ERF actuator and the hybrid actuation. For the PZT/SMA hybrid smart structure, the PZT actuator takes account of the high frequency excitation, while the SMA actuator exerts large vibration control force. The experimental results exhibit superior abilities of the hybrid actuation systems to tailor elastodynamic responses of the HSS rather than a single class of actuation system alone.

• International Journal of Advanced Culture Technology
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• 제4권2호
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• pp.34-37
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• 2016

Internet was once used to link ideas, then people and now it is starting to connect all things. IoT constitutes a good paradigm to enable people to design and modify things, and then share their designs and modifications. Through the internet, things nowadays are able to exchange raw data and information, thus enabling the development of a new class of interconnected smart objects. Smart building block toy systema are a newly proposed concept that combines internet technology into educational blocks. It is composed of the IoT environment that has attracted attention recently. In this paper, we design a system using starUML, one of the program development tools in the system design process. Educational content can be shared to learners via the proposed service of the IoT, while also being interesting for young child learners.

• International journal of advanced smart convergence
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• 제8권2호
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• pp.199-203
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• 2019

In this paper, we propose the efficient impulsive noise mitigation scheme for power line communication (PLC) systems in smart grid applications. The proposed scheme estimates the channel impulsive noise information of receiver by applying machine learning. Then, the estimated impulsive noise is updated in data base. In the modulator, the impulsive noise which reduces the PLC performance is effectively mitigated through proposed technique. As an impulsive noise model, Middleton Class A interference model was employed. The performance is evaluated in terms of bit error rate (BER). From the simulation results, it is confirmed that the proposed scheme has better BER performance compared to the conventional model. As a result, the proposed noise mitigation improves the signal quality of PLC systems by effectively removing the channel noise. The results of the paper can be applied to PLC systems for smart grid.

• Journal of Information Processing Systems
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• 제16권6호
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• pp.1437-1446
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• 2020

For the last few years, smart devices have begun to occupy an essential place in the life of children, by allowing them to access a variety of language activities and books. Various studies are being conducted on using smart devices for education. Our study extracts images and texts from kids' book with smart devices and matches the extracted images and texts to create new images that are not represented in these books. The proposed system will enable the use of smart devices as educational media for children. A deep convolutional generative adversarial network (DCGAN) is used for generating a new image. Three steps are involved in training DCGAN. Firstly, images with 11 titles and 1,164 images on ImageNet are learned. Secondly, Tesseract, an optical character recognition engine, is used to extract images and text from kids' book and classify the text using a morpheme analyzer. Thirdly, the classified word class is matched with the latent vector of the image. The learned DCGAN creates an image associated with the text.

• 한국엔터테인먼트산업학회논문지
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• 제15권8호
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• pp.255-267
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• 2021

본 연구의 목적은 스마트도구를 활용한 플립드 러닝 수업 설계 모형을 개발하고 그 타당성을 검증함으로써 체계적이고 효과적인 기초의학 교육을 위한 기초자료를 제시함에 있다. 이를 위해 본 연구에서는 문헌고찰을 바탕으로 모형 시안을 개발하였으며, 전문가 검토 및 현장 적용을 통해 그 타당성을 검증하였다. 본 연구에서는 스마트 도구를 활용한 플립드러닝 수업 설계 모형으로서 RECIPE (R: Ready, E: Establish a Plan, C: Create and Connect Media, I: Into the Classroom, P: Process-focused Assessment, E: Evaluation) 모델을 개발하였다. 이 모델은 플립드 러닝을 설계하는 각각의 단계에서 적합한 스마트도구를 적용함으로서 학습효과를 제고시키는 모델이다. 2019년 1학기 해부학 및 신경과학 강의 개발에 본 모델을 적용한 결과 학생들의 흥미와 만족도가 높게 나타난 결과를 토대로 기초의학 분야에서의 특화된 모델로서 제안하는 바이다. 따라서 본 연구에서 개발한 RECIPE 모델은 여러 기초의학 관련 수업에 적용 가능하며, 이에 기초한 플립드 러닝 수업 설계를 통해 학생들의 기초의학에 대한 이해를 도모할 수 있을 것으로 기대한다.