• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.5 no.4
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• pp.211-215
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• 2012

Surgery equipment in operating room is very important at treatment procedure of patients. In this circuit of large equipment, a sudden change of current make big problem such as short circuit. when the current is converted suddenly, the current converter becomes in saturate and it caused by the induction curve of the inductor. in this case, the rates of the primary and secondary winding are broken and it becomes a open circuit. in this paper, we will look around the current transform of the primary and secondary winding when current converter becomes in saturate.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.10a
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• pp.9-11
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• 2018

Recently, door locks have become popular. However, it is often more difficult to recognize the vulnerability of the door lock than to recognize it as more convenient and secure than a mechanical key. Therefore, in this study, the function of the door lock was improved and the weak points were reinforced. Door lock is vulnerable to heat when a fire occurs, so that the door may not open. Therefore, the door is automatically opened when the internal temperature of the fire site exceeds a predetermined temperature by attaching a heat sensor. In the room, the door was automatically opened without having to press the password. Through the proposed function, it can be expected to prevent the casualties in case of fire.

• Journal of Korea Society of Industrial Information Systems
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• v.13 no.3
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• pp.16-22
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• 2008

In recent years, embedded applications have emerged at a fast rate and used in every field of one can think of ranging from household products such as microwaves, to automotive products such as air bags sensing and control, to industrial robots. In this paper, a wireless ordering system is developed using Bluetooth communications. The features of this system is the order is performed by the customers rather than the waiters. It can save time to wait until the attenders to take order. Also, the unintended ordering mistakes through waiters can be prevented. The developed system is connected to the kitchen and the counter for automatic checkout.

• Proceedings of the KIEE Conference
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• 2007.11a
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• pp.124-125
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• 2007

The composites were fabricated $\beta$-SiC and $TiB_2$ powders with the liquid forming additives of 8, 12, 16[wt%] $Al_2O_3+Y_2O_3$ as a sintering aid by pressureless annealing at $1,650[^{\circ}C]$ for 4 hours. Reactions between SiC and transition metal $TiB_2$ were not observed in the microstructure and the phase analysis of the pressureless annealed SiC-$TiB_2$ electroconductive ceramic composites. The relative density, the flexural strength, the Young's modulus and the Vicker's hardness showed the highest value of 82.29[%], 189.5[MPa], 54.60 [GPa] and 2.84[GPa] for SiC-$TiB_2$ composites added with 16[wt%] $Al_2O_3+Y_2O_3$ additives at room temperature. The relative density of SiC-$TiB_2$ composites was lowered due to gaseous products of the result of reaction between SiC and $Al_2O_3+Y_2O_3$. The electrical resistivity showed the lowest value of 0.012[${\Omega}{\cdot}cm$] for 16[wt%] at 25[$^{\circ}C$]. The electrical resistivity was all negative temperature coefficient resistance (NTCR) in the temperature ranges from 25[$^{\circ}C$] to 700[$^{\circ}C$].

• Journal of the Korean Vacuum Society
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• v.12 no.1
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• pp.16-19
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• 2003

Ni thin films on the p-InP (In) substrates were grown at room temperature by using the ion beam-assisted deposition. In order to determine the work function of the Ni thin films, the $\gamma$values were measured as functions of the acceleration voltages by using Ne, Ar, $N_2$. and Xe ion sources. The dependences of the values on various gases and on the acceleration voltages of the focused ion beam were obtained to determine the work function of the Ni thin films. The value of the work function of the Ni thin films grown on the p-InP (100) substrate was 5.8 eV ~ 5.85 eV. These results provide important information on the electronic properties of Ni thin films grown on p-InP (100) substrates at room temperature.

• 전자공학회논문지 IE
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• v.46 no.4
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• pp.25-30
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• 2009

The cooling water circulation pipes had been used to drop the temperature of refractory outside shell of blast furnace by cooling plate or stave type. They were attacked by surrounding CO gas and it was the cause that they were corroded and the water inflow in the refractory due to leakage of water. So, the life of refractory material was shorten and changed for the worse the conditions of blast furnace. The automatic sensing device for water leakage of cooling pipe was developed to check the position of trouble by use the micro-process system when cooling water leak and then CO gas will be inflowed into the cooling pipe at the leakage position. The inflowed CO gas will be detected in the micro-process system and delivered the detected position of cooling plate or stave to main control room through the wireless-radio relay station. This system can be possible to detect the position of cooling plate or stave the water leakage part immediately and then deliver the signal to main control room by use the micro-process system and wireless-radio relay station. This system will develop the working condition from manual system to unmanned auto alarm system.

• The Journal of Korean Academic Society of Nursing Education
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• v.22 no.1
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• pp.83-95
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• 2016

Purpose: This study aims to identify perception, performance, and the related factors of performance in regards to patients' medical information protection among allied health college students. Methods: Four hundred twelve subjects from three colleges located in Jeonbuk and Kyungbuk province consented to participate. Data was collected from November 28 to December 15, 2012. To assess perception and performance in regards to patients' medical information protection, a self-reporting questionnaire was used. Data was analyzed via SPSS 18.0 program. Results: The score of perception and performance about patients' medical information protection were 4.07 and 3.56, respectively. All item's scores of performance were significantly lower than those of perception. The perception score was significantly different according to recognition of hospital ethics code (t=1.95, p=.052), and recognition of association ethics code (t=2.88, p=.004). The performance score was significantly different according to gender (t=-3.32, p=001), major (F=14.41, p<.001), clinical practicum hospitals (F=8.22, p<.001), and method of electronic medical record access (F=3.23, p=.023). The factors influencing performance were perception(${\beta}=.46$, p<.001), duration of clinical practice(${\beta}=-.36$, p<.001), and gender(${\beta}=.09$, p=.033). Conclusion: In order to improve performance in regards to patients' medical information protection of allied health college students, we should develop ethical education programs and standardize them through multidisciplinary collaboration.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.899-902
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• 2009

As computer network and wireless technology continue to grow rapidly, a wide range of remote application has been applied to medical field such as remote medical consulting and remote patient monitoring. This research aims to design RF telecommunication-based healthcare application to collect and manage patient's physiological data, and describe the overall procedure of experiment. MySQL database is designed to record patient's physiological data including temperature, blood pressure and heart rate and save information about medical behaviors such as doctor's prescription for patients. Therefore, users approved by healthcare application can query patient's data and collected data can be used to reorganize data for clinical test. As a result, temperature and humidity of patient's room which must be checked frequently can be processed automatically through ubiquitous sensor network. The information entered from mobile phones or web is saved in database, ensuring systematical management through computer. Moreover, patient's family members can easily access hospital data, improving their experience with medical service.

• Proceedings of the KIEE Conference
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• 2008.04a
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• pp.141-142
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• 2008

Hearing loss is the most common birth defect among infants. Yet most hearing-impaired children are not identified until 1 to 3 years of age - which is well beyond the critical period(6 month) for healthy speech and language development. However, if a hearing-impairment is identified and treated in its early stages, child's speech and language skills will be comparable to his or her normal- hearing peers. For these reasons, hearing screening at birth and routinely throughout childhood is extremely important. Auditory brain-stem response(ABR) is nowadays one of the most reliable diagnostic tools in the early detection of hard of hearing. In this study, we developed the system that detects auditory evoked potential using micro-processor. Furthermore, it is required to develop a portable system to measure in not only soundproof room but also nursery for infants.

• Korean Journal of Adult Nursing
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• v.25 no.1
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• pp.74-82
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• 2013

Purpose: The purpose of this study was to identify the fall risk factors and to evaluate the effectiveness of the Morse Fall Scale(MFS) as an assessment tool among hospitalized inpatients. Methods: The medical records of a total of 294 patients who admitted to hospital from January 1 to December 31, 2010 were reviewed. One hundred forth seven patients who had experienced fall were matched with 147 patients who have never experienced fall. The fall information was obtained from electronic medical records and fall reports. Results: There were significant differences in visual disturbances, pain, emotional disturbances, sleep disorder, urination problems and elimination disorder at admission between fallers and non-fallers. Patients who had higher MFS scores at admission were more likely to fall as compared to the patients with lower MFS scores. When falls did occur, these occurred within five days following admission, in the patient room, among patients with alert mental status, and among patients who were ambulant with some assistance. Conclusion: The findings of this study support the need of using risk assessment tool for predicting risk for falls. This finding can be used as a useful resource to develop nursing intervention strategies for fall prevention at the hospital.