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Predictors and outcomes of unplanned readmission to a different hospital
Kim, Hongsoo,Hung, William W.,Paik, Myunghee Cho,Ross, Joseph S.,Zhao, Zhonglin,Kim, Gi-Soo,Boockvar, Kenneth International Society for Quality in Health Care 2015 International journal for quality in health care Vol.27 No.6
<P><B>Objectives</B></P><P>To examine patient, hospital and market factors and outcomes associated with readmission to a different hospital compared with the same hospital.</P><P><B>Design</B></P><P>A population-based, secondary analysis using multilevel causal modeling.</P><P><B>Setting</B></P><P>Acute care hospitals in California in the USA.</P><P><B>Participants</B></P><P>In total, 509 775 patients aged 50 or older who were discharged alive from acute care hospitals (index hospitalizations), and 59 566 who had a rehospitalization within 30 days following their index discharge.</P><P><B>Intervention</B></P><P>No intervention.</P><P><B>Main Outcome Measures(s)</B></P><P>Thirty-day unplanned readmissions to a different hospital compared with the same hospital and also the costs and health outcomes of the readmissions.</P><P><B>Results</B></P><P>Twenty-one percent of patients with a rehospitalization had a different-hospital readmission. Compared with the same-hospital readmission group, the different-hospital readmission group was more likely to be younger, male and have a lower income. The index hospitals of the different-hospital readmission group were more likely to be smaller, for-profit hospitals, which were also more likely to be located in counties with higher competition. The different-hospital readmission group had higher odds for in-hospital death (8.1 vs. 6.7%; <I>P</I> < 0.0001) and greater readmission hospital costs ($15 671.8 vs. $14 286.4; <I>P</I> < 0.001) than the same-hospital readmission group.</P><P><B>Conclusions</B></P><P>Patient, hospital and market characteristics predicted different-hospital readmissions compared with same-hospital readmissions. Mortality and cost outcomes were worse among patients with different-hospital readmissions. Strategies for better care coordination targeting people at risk for different-hospital readmissions are necessary.</P>
CONTEXT MODELING FOR SERVICE COMPOSITION IN U-LEARNING ENVIRONMENT
Hongsoo Hur,Heeyong Park,Jeongseok Kim,Kyungwon Seo,Moohun Lee,Sunghoon Cho,Bonghoi Kim,Euiin Choi 한국멀티미디어학회 2007 한국멀티미디어학회 국제학술대회 Vol.2007 No.-
With advances in the field of ubiquitous technology, education configuration has changed to personalization and customization according to context of user. It is difficult to forecast previously and prepare relevant services, because context of individual is changed any time. Therefore, if we composite and provide users to relevant services with context information of individual, we will provide more customized services. To provide these service, we have to formulate context information of individual and represent it that computer can understand. Ontology-based approaches to context modeling have been proposed. Modeled context information can acquire high-level context information from low-level context data through reasoning rule. This paper proposes a context model to standardize basic context information for service composition in u-learning environment.
Nano-patterned SU-8 surface using nanosphere-lithography for enhanced neuronal cell growth
Kim, Eunhee,Yoo, Seung-Jun,Kim, Eunjung,Kwon, Tae-Hwan,Zhang, Li,Moon, Cheil,Choi, Hongsoo IOP 2016 Nanotechnology Vol.27 No.17
<P>Mimicking the nanoscale surface texture of the extracellular matrix can affect the regulation of cellular behavior, including adhesion, differentiation, and neurite outgrowth. In this study, SU-8-based polymer surfaces with well-ordered nanowell arrays were fabricated using nanosphere lithography with polystyrene nanoparticles. We show that the SU-8 surface with nanowells resulted in similar neuronal development of rat pheochromocytoma (PC12) cells compared with an unpatterned poly-L-lysine (PLL)-coated SU-8 surface. Additionally, even after soaking the substrate in cell culture medium for two weeks, cells on the nanowell SU-8 surface showed long-term neurite outgrowth compared to cells on the PLL-coated SU-8 surface. The topographical surface modification of the nanowell array demonstrates potential as a replacement for cell adhesive material coatings such as PLL, for applications requiring long-term use of polymer-based implantable devices.</P>
Fabrication of 6-superconducting layered HTS wire for high engineering critical current density
Gwantae Kim,Hongsoo Ha,Hosup Kim,Sangsoo Oh,Jaehun Lee,Seunghyun Moon 한국초전도저온학회 2021 한국초전도저온공학회논문지 Vol.23 No.4
Recently, cable conductors composed of numerous coated conductors have been developed to transport huge current for largescale applications, for example accelerators and fusion reactors. Various cable conductors such as CORC (Conductor on roundcore), Roebel Cable, and TSTC (Twisted stacked tape cable) have been designed and tested to apply for large-scale applications. But, these cable conductors cannot improve the engineering critical current density (Je) because they are made by simple stackingof coated conductors. In this study, multi-HTS (High temperature superconductor) layers on one substrate (MHOS) wire wasfabricated to increase the engineering critical current density by using the exfoliation of superconducting layer from substrate andsilver diffusion bonding method. By the repetition of these processes, the 10 m long 6-layer MHOS conductor was successfullyfabricated without any intermediate layers like buffer or solder. 6-layer MHOS conductor exhibited a high critical current of2,460A/12mm-w. and high engineering critical current density of 1,367A/mm2at liquid nitrogen temperature.