• Journal of Digital Convergence
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• v.11 no.6
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• pp.221-233
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• 2013

This study aims to develop the severity-adjusted length of stay(LOS) model for acute stroke patients using data from the hospital discharge survey and propose management of length of stay(LOS) for acute stroke patients and using for Hospital management. The dataset was taken from 23,134 database of the hospital discharge survey from 2004 to 2009. The severity-adjusted LOS model for the acute stroke patients was developed by data mining analysis. From decision making tree model, the main reasons for LOS of acute stroke patients were acute stroke type. The difference between severity-adjusted LOS from the decision making tree model and real LOS was compared and it was confirmed that insurance type and bed number of hospital, location of hospital were statistically associated with LOS. And to conclude, hospitals should manage the LOS of acute stroke patients applying it into the medical information system.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.8
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• pp.1643-1654
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• 2015

With standardization of IEEE 802.11n, APs with the 2.4GHz and 5GHz dual-band capability have widely been deployed over a metropolitan area by individuals and internet service providers. Moreover, due to the increasing attentions on indoor-localization technique using Wi-Fi, the need for LOS and NLOS determination scheme is increasing to enhance accuracy of the localization. In this paper, we propose a novel LOS/NLOS determination technique by using different radio attenuation characteristics in different frequency bands and different mediums. Based on this technique, we designed a LOS/NLOS-aware indoor localization scheme. The proposed LOS/NLOS determination algorithm can be used when the distance between an user device and an AP is unknown, and the proposed localization scheme provides very accurate room-level position information. We validated the proposed scheme by implementing it on Android smart phones.

• Cross-Cultural Studies
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• v.34
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• pp.285-306
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• 2014

La historia sobre la ${\acute{e}}poca$ de la independencia y la $formac{\acute{o}}n$ de las naciones latinoamericanas enfatiza sobre todo los roles de los hombres y $espor\acute{a}dicamente$ de las mujeres. Se han considerado directrices las acciones de algunos criollos de esa epoca como $Sim{\acute{o}}n$ Bolivar y San Martín. La historiografía masculina-$c{\acute{e}}ntrica$ $est{\acute{a}}$ ignorando y marginando las luchas y los sacrificios de las mujeres que participaron en la independencia y la $formac{\acute{o}}n$ de las naciones. Por tanto, es preciso realizar una crítica a los procesos que han mantenido la tendencia machista, uno de ellos es porque no se han desatendido concepciones y cosmovisiones sobre el $g{\acute{e}}nero$. En fin, esta tendencia es porque no se ha superado la herencia colonial de manera crítica. En este contexto, este artículo intenta investigar los cambios sobre los puntos de vista y la manera de ver a las mujeres y sus actividades durante la ${\acute{e}}poca$ de la independencia. Puesto que las mujeres han sido consideradas como objetos que ocupan un espacio secundario en $comparaci{\acute{o}}n$ a los roles de los criollos. Este estudio pretende configurar nuevos puntos de vista para reestructurar nuestro enfoque tradicional sobre la independencia y las formaciones de las naciones latinoamericanas para poner en evidencia los roles de las mujeres en la historia.

• The Korean Journal of Ceramics
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• v.1 no.3
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• pp.152-154
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• 1995

A non-hydrolytic sol-gel process was developed to fabricate low-hydroxyl hard gels. The reaction of tert-butyl alcohol with silicon halides provided transparent low-hydroxyl hard gels. Some properties such as transparency, density, and refractive index was successfully doped into the hard gel matrices. The absorption spectrum of an erbium-doped methylsilsesquioxane was investigated to decide the pumping wavelength of an argon laser. The luminescence of the erbium-doped gel at 664 nm seems to be due to $4^F{9/2}\to 4^I_{15/2}$ transition.

• Proceedings of the Korea Electromagnetic Engineering Society Conference
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• 2002.11a
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• pp.127-131
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• 2002

This paper presents the a measured path-loss characteristics in urban line-of-sight(LOS) and non line-of-sight(NLOS) environments for 3.4, 5.3, and 6.4 ㎓ band signals. A two-ray model is applied to analyse the path-loss characteristics in LOS areas. In LOS areas, an empirical break point, whose distance is shorter than a theorical break point, is founded. Further, a sudden power level drop occurs at a transition point from LOS region to NLOS area and different path-loss exponents are occured various cases. The power level drop due to comer loss and path-loss exponents both increase as the distance between the transmitter and the corner increases.

• The Journal of Korean Physical Therapy
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• v.11 no.2
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• pp.139-147
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• 1999

The purpose of this study was to evaluate and compare the limits of stability(LOS) data obtained from aged 20 to 69 years. In addition, this study was carried out to know correlation between age and LOS. 150 adults without neurosurgical and orthopedic disability from 20 to 69 years of age participared in this study. The LOS was measured at Two Feet Forceplate with BPM(Balance Performance Monitor) Dataprint Software Version 5.3. In this study applied the independent t-test, one-way ANOVA, and correlation analysis to determine the statistical significance of results at 0.05 level of significance. The results of this study were as follows: 1. The anteroposterior LOS significantly differented from 40 age group to 60 age group. 2. The mediolateral LOS significantly differencted from 50 age group to 60 age group. 3. There were statistically significant differences in anteroposterior LOS according to age increasing.

• Progress in Superconductivity and Cryogenics
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• v.9 no.4
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• pp.1-6
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• 2007

We describe methods for depositing high temperature superconducting films on textured metal tapes by reactive co-evaporation (RCE). We discuss how RCE can be used to deposit on moving tape in a continuous fashion in a Garching-style process. Results are presented on films deposited by RCE at Los Alamos on IBAD-MgO textured tapes. The performance achieved, attaining over 500A/cm-width in self-field at 75.5 K, is competitive with the best results obtained by other processes for coated conductors. Tape production throughput is critical for the economics of the process and high deposition rates achieved in RCE are attractive for this. We present a detailed cost analysis model for HTS deposition using an RCE Garching process. The results indicate that HTS deposition can cost $<$5/kA{\cdot}m$ in a scaled up manufacturing environment.

• Proceedings of the Korea Contents Association Conference
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• 2014.06a
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• pp.25-26
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• 2014

• Clinical and Experimental Pediatrics
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• v.64 no.6
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• pp.310-312
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• 2021

• Physical Therapy Korea
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• v.7 no.2
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• pp.1-19
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• 2000

Decreased equilibrium in standing and walking is a common problem associated with hemiparesis secondary to cerebral vascular accident. In patients with hemiplegia, postural sway is increased and often displaced laterally over the non-affected leg, reflecting asymmetry in lower extremity weight bearing during standing balance. Human balance is a complex motor control task, requiring integration of sensory information, neural processing, and biomechanical factors. Limits of stability (LOS) is a one of the biomechanical factors. The purposes of this study were to establish the influence of asymmetrical weight-bearing on the LOS of independent ambulatory hemiparetic patients. The subjects of this study were 29 hemiparetic patients (18 males, 11 females) being treated as admitted or out patients at Young-Nam University Hospital and Taegu Catholic University Hospital, all of whom agreed to participate in the study. Participants were asked to lean and displace their center of gravity (COG) as far as possible in directions to the sides and front of the body. The LOS and weight-bearing ratio were measured with a Balance Performance Monitor (BPM) Dataprint Software Version 5.3. In order to assure the statistical significance of the results, the independent t-test and a Pearson's correlation were applied at the .05 and .01 level of significance. The results of this study were as follows: 1) There were statistically significant differences in anteroposterior LOS according to the cause of brain demage (p<.01). 2) There were statistically significant differences in mediolateral LOS according to the hemiparetic side (p<.05). 3) There were statistically significant differences in anteroposterior and mediolateral LOS according to the brain operation (p<.01). 4) The mediolateral LOS significantly correlated with weight-bearing ratio (p<.01).