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Classification Model of Facial Acne Using Deep Learning (딥 러닝을 이용한 안면 여드름 분류 모델)

  • Jung, Cheeoh;Yeo, Ilyeon;Jung, Hoekyung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.23 no.4
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    • pp.381-387
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    • 2019
  • The limitations of applying a variety of artificial intelligence to the medical community are, first, subjective views, extensive interpreters and physical fatigue in interpreting the image of an interpreter's illness. And there are questions about how long it takes to collect annotated data sets for each illness and whether to get sufficient training data without compromising the performance of the developed deep learning algorithm. In this paper, when collecting basic images based on acne data sets, the selection criteria and collection procedures are described, and a model is proposed to classify data into small loss rates (5.46%) and high accuracy (96.26%) in the sequential structure. The performance of the proposed model is compared and verified through a comparative experiment with the model provided by Keras. Similar phenomena are expected to be applied to the field of medical and skin care by applying them to the acne classification model proposed in this paper in the future.

Effects of Simulation Education with Problem-based Learning on Information Literacy, Self-directed Learning Ability, and Academic Self-efficacy of Nursing Students (문제중심학습기반 시뮬레이션 실습교육이 간호대학생의 정보활용능력, 자기주도적 학습능력, 학업적 효능감에 미치는 효과)

  • Cho, Ok-Hee;Hwang, Kyung-Hye
    • Journal of Digital Convergence
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    • v.17 no.4
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    • pp.239-247
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    • 2019
  • The objective of this study was to determine the effects of simulation education with problem-based learning (SIM-PBL) on information literacy, self-directed learning ability, and academic self-efficacy of nursing students. The subjects were 81 fourth-year nursing students attending a university in Chungcheongnam-do, Korea. SIM-PBL was provided once per week (150 minutes each) for four weeks, and a structured questionnaire was used to survey information literacy, self-directed learning ability, and academic self-efficacy before and after educational training. After completing the four-week program, abilities in the sub-items of information literacy, such as information integration (${\acute{p}}=.030$), information expression (${\acute{p}}=.003$), and information ethics (${\acute{p}}=.016$) were improved. However, no differences in self-directed learning ability and academic self-efficacy were noted. Findings confirmed that SIM-PBL is an effective teaching method for improving the information literacy of nursing students. Therefore, it is necessary to come up with an SIM-PBL education plan for utilizing reliable and useful information ethically.

Comparison of Deep Learning Activation Functions for Performance Improvement of a 2D Shooting Game Learning Agent (2D 슈팅 게임 학습 에이전트의 성능 향상을 위한 딥러닝 활성화 함수 비교 분석)

  • Lee, Dongcheul;Park, Byungjoo
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.19 no.2
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    • pp.135-141
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    • 2019
  • Recently, there has been active researches about building an artificial intelligence agent that can learn how to play a game by using re-enforcement learning. The performance of the learning can be diverse according to what kinds of deep learning activation functions they used when they train the agent. This paper compares the activation functions when we train our agent for learning how to play a 2D shooting game by using re-enforcement learning. We defined performance metrics to analyze the results and plotted them along a training time. As a result, we found ELU (Exponential Linear Unit) with a parameter 1.0 achieved best rewards than other activation functions. There was 23.6% gap between the best activation function and the worst activation function.

A Study on the Characteristics of Lower Extremity Muscle Activation according to the Variable Weight Shift on the Affected Side in Hemiplegic Patients (편마비 환자의 마비측으로의 다양한 중심이동에 따른 하지 근육 활성도 특성에 관한 연구)

  • Kim, Kyung-Hwan;Park, Sung-Hun;Pak, Noh-Wook;Lee, Hye-Jin
    • PNF and Movement
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    • v.17 no.1
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    • pp.93-101
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    • 2019
  • Purpose: This study aimed to investigate lower extremity muscle activation to the variable weight shift on the affected side of patients with hemiplegia. Methods: Eighteen patients with chronic hemiplegia volunteered to participate in this study. All participants performed three types of weight shift (sideways, forward, and backward) in limits of stability on the affected side. Muscle activation in a paralyzed leg was measured with electromyography on the gluteus medius, tensor fasciae latae, rectus femoris, and biceps femoris; furthermore, the attached area was recommended by SENIAM projects. Each weight shift was performed three times, and then the mean value of the three measurements was analyzed. The data were analyzed by measuring the symmetrically standing position with the reference voluntary contraction (RVC) and was standardized with the percentage of RVC method. Results: No significant difference in lower extremity muscle activation occurred according to the three types of variable weight shift. However, significant differences in lower extremity muscle activation did occur with each weight shift position. In addition, activation increased at the rectus femoris and decreased at the gluteus medius and tensor fasciae latae. Conclusion: Hip abductor muscle strength training and variable weight shifts on the affected side must increase to improve patients'balance and limits of stability.

Effects of Isokinetic Strength Exercise of the Hemiparetic Knee Joint on Lower Extremity Sensorimotor and Gait Functions in Patients With Chronic Stroke: Open Kinetic Chain Versus Closed Kinetic Chain

  • An, Chang-man;Roh, Jung-suk
    • Physical Therapy Korea
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    • v.26 no.2
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    • pp.49-60
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    • 2019
  • Background: After stroke, in order to improve gait function, it is necessary to increase the muscle strength and to enhance the propriocetive function of the lower extremity. Objects: This study aimed to compare the effects of open kinetic chain (OKC) versus closed kinetic chain (CKC) isokinetic exercise of the hemiparetic knee using the isokinetic equipment on lower extremity sensorimotor function and gait ability in patients with chronic stroke. Methods: Thirty participants with chronic hemiplegia (> 6 months post-stroke) were randomly divided into 2 equal groups: CKC group and OKC group. Patients from both groups attended conventional physiotherapy sessions 3 times a week for 6 weeks. Additionally, subjects from the CKC group performed isokinetic exercise using the CKC attachment, while those from the OKC group performed isokinetic exercise using the OKC attachment. The isokinetic knee and ankle muscles strength, position sense of the knee joint, and spatiotemporal gait parameters were measured before and after interventions. Results: The knee muscles peak torque/body weight (PT/BW) and hamstring/quadriceps (H/Q) ratio significantly increased in both groups (p<.01). In particular, ankle plantarflexors PT/BW, position sense of the knee, gait velocity, and spatial gait symmetry significantly improved in the CKC group (p<.01, p<.05, p<.01, and p<.01, respectively). Conclusion: CKC isokinetic exercise can be an effective therapeutic intervention for the improvement of sensorimotor function of the lower extremity and gait functions, such as gait velocity and symmetry. CKC position in isokinetic strength training is effective to improve functional ability in patients with chronic stroke.

The Retrospective Study for the Effect of Traditional Korean Medicine on Patients with Olfactory Disorder after Failure of Steroid Treatment (스테로이드 치료에 반응하지 않은 후각장애 환자에 대한 한방치료의 효과)

  • Park, So-Young;Kim, Min-Hee;Kang, Min-Seo;Kwak, Jae-Young;Choi, In-Hwa
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.32 no.2
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    • pp.59-67
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    • 2019
  • Objectives : The purpose of this study was to analyze the effects of traditional korean medicine treatment on patients with olfactory disorder who did not respond to steroid treatment. Methods : A retrospective chart review was conducted on 16 patients who visited the outpatient clinic with olfactory disorder for over 1 month. The patients were treated with Herbal medicine, acupuncture, electronic moxibustion, intranasal pharmacopuncture, and olfactory training. The treatment effect was evaluated by KVSS I test. Results : There was no significant difference in KVSS I test score according to sex, age, duration of treatment, number of treatment, the days after onset. There was no significant difference in the KVSS I test scores before and after the treatment for the cases of sinonasal disease, head trauma, and idiopathic cases. However, there was a significant difference in cases of post-viral olfactory disorder. Conclusion : Traditional korean medicine may be effective for patients with post-viral olfactory disorder that did not show improvement in steroid treatment.

Utilization Plan of Blended Learning - Focused on NHK「NEWS WEB EASY」- (블랜디드러닝(Blended Learning)활용방안 - NHK「NEWS WEB EASY」를 중심으로 -)

  • Yu, Mi Sun
    • Journal of the Korea Convergence Society
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    • v.10 no.5
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    • pp.119-124
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    • 2019
  • The purpose of this study is to introduce the NHK"NEWS WEB EASY"online site to intermediate level learners of Japanese language, and to teach effective methods of Blended Learning through the lesson planning method using "NEWS WEB EASY" Suggesting. First, this paper helped students cultivate various vocabulary learning ability through Blended Learning using "NEWS WEB EAS Y", Second, helped them learn about Japanese culture and Japan through various articles, Third, helped them naturally perform listening training through listening files, Fourth, helped them practice reading Kanji and improve vocabulary skills by distributing the files without Furigana to them for search, and Fifth, showed them how to improve speaking ability by reading practice through learning using "NEWS WEB EASY". We could learn the fact that the study helped students a lot understand Japan and improve their Japanese ability by learning news articles that they could not come across due to prejudice through learning using "NEWS WEB EASY".

Development and Quality Characteristics of Seasoned Dried Pen Shell Atrina pectinata Adductor (키조개(Atrina pectinata) 패주를 이용한 조미 중간수분제품의 제조 및 품질특성)

  • Hwang, Young-Sook;Hwang, Seok-Min;Oh, Kwang-Soo
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.51 no.6
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    • pp.632-639
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    • 2018
  • To develop the high-value added seafood products from a regional speciality seafood, the seasoned dried pen shell Atrina pectinata adductor (SDPA) and seasoned smoke-dried pen shell adductor (SSPA) samples were prepared, and their optimal processing conditions, quality metrics, and shelf-life characteristics were examined. SDPA and SSPA samples were produced by thawing of frozen pen shell adductor, and cutting it into 6-7 mm slices, hot-air drying ($60^{\circ}C$, 20 min) or smoking ($110^{\circ}C$, 20 min), seasoning ($4^{\circ}C$, 12 h) with seasoning powder (60% sorbitol, 15% sucrose, 16% salt and 9.0% monosodium glutamate), hot-air drying ($60^{\circ}C$, 3 h), torching, vacuum-packaging in a laminated plastic film bag, heat treating with hot-water ($85^{\circ}C$, 15 min), and cooling. The moisture content of SDPA and SSPA samples was 44.5 and 43.0%, respectively, and the water activity was 0.845 and 0.842. The total amino acids in SDPA and SSPA samples were 20,986.8 and 21,312.4 mg/100 g, respectively, and the major amino acids in both products were aspartic acid, serine, glutamic acid, proline, glycine, alanine, valine, leucine, phenylalanine, lysine and arginine. The primary minerals were Na, S, K and P. Incubating tests indicated that the quality of SDPA and SSPA samples was maintained for 30 days of storage.

Improving a newly adapted teaching and learning approach: Collaborative Learning Cases using an action research

  • Lee, Shuh Shing;Hooi, Shing Chuan;Pan, Terry;Fong, Chong Hui Ann;Samarasekera, Dujeepa D.
    • Korean journal of medical education
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    • v.30 no.4
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    • pp.295-308
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    • 2018
  • Purpose: Although medical curricula are now better structured for integration of biomedical sciences and clinical training, most teaching and learning activities still follow the older teacher-centric discipline-specific formats. A newer pedagogical approach, known as Collaborative Learning Cases (CLCs), was adopted in the medical school to facilitate integration and collaborative learning. Before incorporating CLCs into the curriculum of year 1 students, two pilot runs using the action research method was carried out to improve the design of CLCs. Methods: We employed the four-phase Kemmis and McTaggart's action research spiral in two cycles to improve the design of CLCs. A class of 300 first-year medical students (for both cycles), 11 tutors (first cycle), and 16 tutors (second cycle) were involved in this research. Data was collected using the 5-points Likert scale survey, open-ended questionnaire, and observation. Results: From the data collected, we learned that more effort was required to train the tutors to understand the principles of CLCs and their role in the CLCs sessions. Although action research enables the faculty to improve the design of CLCs, finding the right technology tools to support collaboration and enhance learning during the CLCs remains a challenge. Conclusion: The two cycles of action research was effective in helping us design a better learning environment during the CLCs by clarifying tutors' roles, improving group and time management, and meaningful use of technology.

The Present State and Outcomes of Korean Language Education for Multicultural Family Members (다문화 가정 대상 한국어 교육의 현황과 성과)

  • Kim, Seon-Jung
    • Cross-Cultural Studies
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    • v.29
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    • pp.367-389
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    • 2012
  • The aim of this paper is to briefly consider the present state regarding Korean language education for multicultural family members, and to consider the outcomes produced so far. Married woman immigrants and their children must be one of the most significant groups for Korean language education in terms of their huge number and their roles and meanings in Korean society. In order to uplift the Korean communicative ability for multicultural family members, an effective operating system for Korean language education is needed, and also live and efficient Korean language instruction must be given by capable Korean language teachers with adequate teaching materials. A customized Korean language education must also be offered based on researches about the characteristics of multicultural family members as "Korean language learners". Korean language education for married woman immigrants has almost been set up in some extent, in terms of teaching materials and the teacher training system. Therefore, an efficient operating system must be constructed so that the developed teaching materials can be actively utilized in the site of Korean language education. A periodical retraining of Korean language teachers for multicultural family members is also necessary for the improvement of Korean language teaching efficiency. However, Korean language education for multicultural children is still in its infancy due to its late start-up. By the support of the Korean government, the curriculum of Korean language education has recently been fixed, KSL text books are being developed, and a diagnostic tool for evaluating their Korean language ability is now in progress. Many continuing concerns and support must still be provided for the improvement of their Korean language ability and fostering them as competitive and capable of speaking Korean.