• Journal of Korean Institute of Industrial Engineers
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• v.18 no.1
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• pp.177-184
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• 1992

The control policy algorithm is examined and compared in this study. This research investigates a two state partially observable Markov chain in which only deterioration can occur and for which the only actions possible are to replace or to live alone. The goal of this research is to compare the computational efficiencies of control policy algorithm. One is Sondik's algorithms and the other one is jump algorithm.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.25 no.7
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• pp.455-461
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• 2015

The paper deals with the accuracy comparison between two kinds of ultrasonic paths for flow rate measurement. In the Z-path, two transducers are installed on the opposite sides of each other on a pipe, and the ultrasonic waves generated at one transducer propagate to arrive at the other one only by refraction. In the V-path, two transducers are installed on one side of a pipe, and the ultrasonic waves reflected at the inner wall of the pipe are received. Transit times were confirmed to identify the propagation paths by comparing the theoretically calculated results and measured ones. The flow rate measurements with two kinds of ultrasonic paths appeared very similar. It would be possible to select either of the paths by considering the advantages and disadvantages.

• International journal of advanced smart convergence
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• v.12 no.2
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• pp.67-75
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• 2023

Recently, many studies have been conducted on ways to utilize AI technology in NIDS (Network Intrusion Detection System). In particular, CNN-based NIDS generally shows excellent performance. CNN is basically a method of using correlation between pixels existing in an image. Therefore, the method of generating an image is very important in CNN. In this paper, the performance comparison of CNN-based NIDS according to the image generation method was performed. The image generation methods used in the experiment are a direct conversion method and a one-hot encoding based method. As a result of the experiment, the performance of NIDS was different depending on the image generation method. In particular, it was confirmed that the method combining the direct conversion method and the one-hot encoding based method proposed in this paper showed the best performance.

• Herbal Formula Science
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• v.30 no.3
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• pp.183-189
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• 2022

Objective : This study aims to analyze the current use of body part terminology in Korean medicine formula data by comparing with ICD-11 body part terminology as a criteria. Methods : Body part terminology was extracted from the main treatment data within the Korean Medicine formula ontology and was analyzed in comparison with the ICD-11 body part terminology. Results : Out of 113 body part terminologies in Korean medicine, 92 were corresponded with ICD in a one-to-one, one-to-multi, or multi-to-one relation. Also, most body part terminologies were corresponded to superordinate concepts of ICD while 21 terminologies were not able to be corresponded to ICD. Conclusion : A majority of body part terminology in formula data could be corresponded to ICD but mostly refered to superordinate concepts. Results showed various types of corresponding relation which requires further study for precise and detailed correspondence. Also, study showed some terminologies were not applicable for correspondence which were mostly a unique body part concept of Korean medicine which requires further study to present Korean Medicine knowledge accurately in the language of ICD.

• Journal of the Korean Academy of Clinical Electrophysiology
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• v.1 no.1
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• pp.57-72
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• 2003

This study conducts electrical stimulation to male white rat of Spargue-Dawley which is 7 weeks, has the weight of 240 g and is seemingly healthy for one or two weeks by means of neuromuscular electrical stimulator in order to examine the effects of neuromuscular electrical stimulation on its gastrocnemius, measures change of weight of gastrocnemius, serum and enzyme activity and then obtains the following conclusions. There is little difference in AST and CPK of weight and serum of gastrocnemius after one or two weeks of conducting neuromuscular electrical stimulation in all experimental groups. On the one hand, as a result of histochemical observation, NMES I group showed hypertrophy of perimysium and increase of sectional diameter of muscle fiber compared to comparison group, but NMES II group showed a similar result to comparison group. When ultrasubstructure was observed under electron microscope, I-type muscle fiber of NMES I group showed well-arranged mitochondria and it was similar to comparison group. II-type muscle fiber showed a large quantity of glycogen granules within sarcoplasmatic and the extension of luminal of T-tubule. I-type muscle fiber of NMES II group had small mitochondria and showed the vacuolar degeneration of mitochondria and extended T-tubule. II-type muscle fiber showed the extension of agranule cytoplasma reticulum with T-tubule and the reduction of amount of glycogen granule within partial sarcoplasmatic.

• Journal of Korean Physical Therapy Science
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• v.6 no.1
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• pp.915-921
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• 1999

The purpose of this study was to determine the effect of testing posture and shoulder position on grip strength. The subjects were one hundred volunteers of Shinsung College (50 males and 50 females), ages from 20 to 27 years(mean age of 22.1 years). This study was carried out from september 7 to setember 10, 1998. The data were analyzed by mean and deviation, unpaired t-test, paired t-test, one way ANOVA and correlation. These results were obtained as follows; 1. Comparison on grip strength by left and right hand, there was a significant difference in standing and sitting position (p<0.05). 2. Comparison on grip strength between male and female, there was a significant difference in standing and sitting position (p<0.05). 3. One-way ANOVA on grip strength according to shoulder joint angle, there was a no significant difference in standing and sitting position (p>0.05). 4. Correlation on grip strength by sitting verus standing, there was a very significantly difference (p<0.01).

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.84-89
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• 2003

Fuzzy controller is one of the succeed controller used in the process control in case of model uncertainties. But it my be difficult to fuzzy controller to articulate the accumulated knowledge to encompass all circumstance. Hence, it is essential to provide a tuning capability. There are many parameters in fuzzy controller can be adapted, scale factor tuning of normalized fuzzy controller is one of the adaptation parameter. Two adaptation methods are implemented in this work on an experimental thermal process, which simulate heating process in liquefied petroleum gases (LPG) recovery process in one of petrochemical industries: Gradient decent (GD) adaptation method; supervisory fuzzy controller. A comparison between the two methods is discussed.

• Korean Journal of Adult Nursing
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• v.27 no.4
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• pp.406-417
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• 2015

Purpose: The purpose of this study was to identify the effects of Telephone-enforced Preoperative Pelvic Floor Muscle Exercise (TP-PFME) for prostate cancer patients on Urinary Incontinence (UI), Urinary Function (UF) related satisfaction, depression, and Quality of Life (QoL). Methods: A non-equivalent control group non-synchronized design was used with 85 participants. The two experimental groups (EG) began the PFME protocol two weeks prior to surgery. The subjects in the EG I received telephone calls to reinforce the PFME protocol. The comparison group began the PFME protocol after their surgery. Data were analyzed by the SPSS/WIN 21.0 using descriptive statistics, $x^2$ test, One-way ANOVA, Fisher's exact test, and Repeated measures ANOVA. Results: EG I showed higher performance of PFME at one (p=.001) and three months (p=.015) after surgery than the comparison group. Comparison group showed significantly more severe UI at one (p=.002) and three months (p=.006) after surgery and reported lower UF related satisfaction than EG I at one month after surgery (p=.015). Participants in both experimental groups reported higher QoL scores (p=.001) at three months following surgery than those in the comparison group. There were no significant differences in depression among the three groups. Conclusion: The findings from this study suggest that preoperative TP-PFME was effective in decreasing the perceived severity of UI as well as increasing UF related satisfaction and QoL.

• Bulletin of the Korean Space Science Society
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• 2009.10a
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• pp.38.3-39
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• 2009

Equatorial Plasma Bubble (herafter, EPB) is a common feature in low-latitude F-region during the night time. Since EPB causes significant impacts on the satellite communication and navigation systems, its accurate forecast is highly demanded by the GNSS users. Thus, further understanding of these features and their configuration is a challenging issue in space weather studies. The day-to-day variability of the plasma bubble activity was investigated by analyzing the TIMED/GUVI, ROCSAT-1, DMSP, and CHAMP satellite data. The pre-reversal enhancement (PRE) is known as the most important single parameter for the onset of plasma bubbles but we do not know yet to what extent the day-to-day variability of the bubble activity can be attributed to the PRE. We obtained the magnitude of the PRE from ROCSAT-1 and the occurrence of bubbles in relation to the PRE was investigated by using the coincident observations of EPBs from TIMED/GUVI, DMSP, and CHAMP. By conducting one-to-one comparison of the PRE characteristics with the EPB occurrence we examined the role of the PRE in the onset of EPBs.

• Journal of the Korea Safety Management & Science
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• v.5 no.1
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• pp.115-128
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• 2003

To comparison the surface treatment methods of stone board materials, the results of Dorry's abrasive test were 23.4 for water-jet system and 18.9 for flame-burner system. Therefore abrasive hardness, the stone board materials by the water-jet system was greater than one by flame-jet system. As a result of Shore's hardness test, the stone board materials by water-jet system was twice greater than one by flame-jet system. Authors carried out microscopic observation to survey a defection of the composition minerals for two methods, but all of the both methods have not founded a defection. Therefore, the stone board materials by water-jet system was greater durability than one by flame-jet for the surface treatment methods.