• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.605-607
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• 2023

Recent research has highlighted the effectiveness of Deep Learning (DL) techniques in automating the detection of lung sound anomalies. However, the available lung sound datasets often suffer from limitations in both size and balance, prompting DL methods to employ data preprocessing such as augmentation and transfer learning techniques. These strategies, while valuable, contribute to the increased complexity of DL models and necessitate substantial training memory. In this study, we proposed a streamlined and lightweight DL method but effectively detects lung sound anomalies from small and imbalanced dataset. The utilization of 1D dilated convolutional neural networks enhances sensitivity to lung sound anomalies by efficiently capturing deep temporal features and small variations. We conducted a comprehensive evaluation of the ICBHI dataset and achieved a notable improvement over state-of-the-art results, increasing the average score of sensitivity and specificity metrics by 2.7%.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1016-1017
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• 2023

이 연구는 ADHD 환자를 대상으로 디지털 치료 게임을 개발하였으며, 환자의 주의력과 기억력을 향상시키도록 구성되었다. 게임은 눈 움직임과 ADHD 의 연관성을 고려하여 아이트래킹 기술을 활용하여 개발되었다. 이를 통해 ADHD 환자를 위한 맞춤형 디지털 치료 게임의 중요성을 강조한다.

• Korean Institute of Interior Design Journal
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• v.24 no.1
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• pp.43-53
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• 2015

As part of alternative of elderly problems in the future super-aging society, this study aims to extract an improvement plan of interior environment design of Seoul-type day care centers to expand in future by observing day care centers as medical and healing environments, from the perspective of user experience. For this study, after selecting major activity areas of representative cases of Seoul-type day care centers, user behaviors in the space were observed and 4 seniors of baby-boom generation who are potential uses were chosen as personas by reflecting characteristics of healthy elderly, physical aging, mental aging and infirm elderly, from the perspective of user experience. Based on previous studies on healing environments, these characteristics and demands of personas were classified into environmental aspects, physical aspects and mental aspects to extract an improvement plan. The study results are as follows. First, interior environment design reflecting persona characteristics helps the elderly adapt to the environment and provides a comfortable environment like home for stability, treatment and recovery of memory. Second, interior environment design reflecting persona characteristics helps psychological healing through light entering the large windows and natural environment elements. Third, for interior environment design reflecting persona characteristics, finish materials with bright and soft colors should be used to change the images of facilities positively. Fourth, spatial composition should be remedied through division of space and built-in furniture depending on the needs of users for loitering of extra time and programs.

• Journal of Korean Academy of Nursing
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• v.47 no.1
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• pp.1-13
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• 2017

Purpose: The purpose of this study was to examine the effects of a cognitive training program on neurocognitive task performance and activities of daily living (ADL) in patients who had a stroke. Methods: The research design for this study was a nonequivalent control group non-synchronized design. Patients were assigned to the experimental (n=21) or control group (n=21). The experimental group received a 4-week cognitive training program and usual care (i.e., rehabilitation service), while the control was received usual care only. Cognitive function was measured with a standardized neurocognitive test battery and ADL was assessed at baseline and one and two months after completion of the intervention. Repeated measures ANOVA was used to determine changes in cognitive function and ADL over 2 months. Results: The interaction of group and time was significant indicating that the experimental group showed improvement in attention, visuospatial function, verbal memory, and executive function compared to the control group which had a sustained or gradual decrease in test performance. A significant group by time interaction in instrumental ADL was also found between the experimental group with gradual improvement and the control group showing no noticeable change. Conclusion: Findings show that the cognitive training program developed in this study is beneficial in restoring cognitive function and improving ADL in patients following a stroke. Further study is needed to investigate the long-term relationship between cognitive training participation and cognitive improvement and effective functioning in daily living.

• Journal of Oriental Neuropsychiatry
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• v.9 no.1
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• pp.25-43
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• 1998

45 Dementia of Alzheimer type patients who were treated by the KOMC NP from Jan. 1996 to July. 1997 were recruited for this study in order to prove the effects of the oriental medical treatment on Dementia of Alzheimer type. Patients were strictly classified into Sasang constitutions, and then were given herbal and acupunctural treatment for various length of time. The efficiency of the treatment was assessed by criteria for memory, orientation, registration, attention and calculation, language. The following results were obtained. 1. Out of 45 cases, 14 improved to almost normal state, 13 improved a little, 16 had no change, and 2 became worse. On the whole, 60% of the patients showed improvement. 2. Out of 31 female patients, 17 patients improved, thus the rate of improvement was at 55%. Out of 14 male patients, 10 patients improved, thus the rate of improvement was at 71%. 3. The analysis of the patients constitution resulted in two Soyang-constitution, 23 Soum and 20 Taeum, Soum, Teaum responded to the treatment to an approximately equal extent. 4. Of the demendia patients involved in the study, 9 cases were mild, 14 moderate, and 22 severe, 9 mild cases, 12 moderate cases and 6 severe cases showed meaningful response to the treatment.

• The Journal of Korean society of community based occupational therapy
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• v.4 no.2
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• pp.75-83
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• 2014

Objective : The purpose of this study is to find out the effects of a Home-based cognitive occupational therapy program conducted for the dementia patients in the initial stages living in Taebaek region in Gangwon-do. Methods : This study carried out Home-based cognitive occupational therapy intervention by 30 Occupational Therapy Dept. students and volunteers targeting 30 dementia patients in the initiative stages for eight sessions, once a week. To identify the change of cognitive function of the participants before and after the program, MMSE-K was used for measuring. Results : As a result of applying Home-based cognitive occupational therapy to the dementia patients in the initial stages, overall cognitive function improvement was demonstrated. Especially, statistically significant improvement was exhibited in orientation, memory retrieval, the concentration of attention, and language ability. Conclusion : The program for cognitive function improvement is considered to be usefully applied to intervention in the dementia patients. The development of various Home-based occupational therapy intervention programs is required in order to adopt the Home-based occupational therapy service in the future.

• The Transactions of the Korea Information Processing Society
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• v.2 no.4
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• pp.592-602
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• 1995

Non-grid and grid method are used for modeling the routing region of the automatic routing system. In this study, we develop the automatic routing system by mixing the methods of non-grid and grid to improve the speed of routing. Grid method has a demerit which decreases the automatic routing speed because it is required a lot of memory by the limitation of the size of board and grid, although the electrical and physical elements are insufficient on the PCB, But non-grid is spent gurite less memory than grid method by using a shape-based patterns. Therefore, we used the methods of non-grid and grid altogether in this paper, In the former method, it is attributed to the improvement of speed, the latter one is applied only the connection of the failed routing in the former one, and it performs the complete automatic routing. This system was developed with C＋＋language under the Windows NT environment of IBM 486DX2-66 Computer.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.19 no.10
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• pp.2043-2052
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• 1994

This paper proposes a new parallel ASIC architecture for real-time image processing to reduce inter-processing element (inter-PE) communication overhead, called a Sliding Memory Plane (SliM) Image Processor. The Slim Image Processor consists of $3\times3$ processing elements (PEs) connected by a mesh topology. With easy scalability due to the topology. a set of SliM Image Processors can form a mesh-connected SIMD parallel architecture. called the SliM Array Processor. The idea of sliding means that all pixels are slided into all neighboring PEs without interrupting PEs and without a coprocessor or a DMA controller. Since the inter-PE communication and computation occur simultaneously. the inter-PE communication overhead, significant disadvantage of existing machines greatly diminishes. Two I/O planes provide a buffering capability and reduce the date I/O overhead. In addition, using the by-passing path provides eight-way connectivity even with four links. with these salient features. SliM shows a significant performance improvement. This paper presents architectures of a PE and the SliM Image Processor, and describes the design of an instruction set.

• Journal of Digital Contents Society
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• v.12 no.4
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• pp.551-557
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• 2011

In this paper, we propose a stack allocation technique of Android Java objects in order to reduce the number of garbage collection which is one of major reason on Android performance degradation when running applications. The proposed technique is to allocate Java objects into stack rather than heap memory. To do so, stacked objects could escape the garbage collection process. We experiment the proposed technique in the latest Android 2.3 version. For the simulation, we take advantage of the well known Java benchmark, Caffeinemark, and our own. The result shows the performance degradation of Dalvik Virtual Machine execution time caused by the stack allocation of Java objects is very slight and the proposed method considerably reduces the frequency of garbage collection. This will increase application performance and give better user interfaces to Android phone users.

• Journal of the Microelectronics and Packaging Society
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• v.24 no.3
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• pp.7-11
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• 2017

In this paper, we have studied the characteristics of NAND Flash memory in SONOS Poly-Si Thin Film Transistor (Poly-Si TFT) device. Source/drain junctions(S/D) of cells were not implanted and selective transistors were located in the end of cells. We found the optimum conditions of process by means of the estimation for the doping concentration of channel and source/drain of selective transistor. As the doping concentration was increased, the channel current was increased and the characteristic of erase was improved. It was believed that the improvement of erase characteristic was probably due to the higher channel potential induced by GIDL current at the abrupt junction. In the condition of process optimum, program windows of threshold voltages were about 2.5V after writing and erasing. In addition, it was obtained that the swing value of poly Si TFT and the reliability by bake were enhanced by increasing process temperature of tunnel oxide.