• Korea Journal of Hospital Management
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• v.29 no.2
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• pp.48-56
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• 2024

Purpose: Despite growing interest in health information sharing, researchers remain uncertain whether hospitals' sharing of information increases patient satisfaction, one of the key measures of the quality of care. This study evaluates the effect of health information sharing on patient satisfaction and whether the effect varies with context. Methodology: Regression analysis was conducted using a sample consisting of 6,641 year-hospital observations, based on data from the annual and IT surveys of the American Hospital Association (AHA) and Census. Findings: Our results suggest that information sharing using health IT increases patient satisfaction, while the extent (breadth) of information sharing increases patient satisfaction, the level of detail (depth) of information sharing does not. Our results also show that the effects of the breadth and depth of information sharing vary with different contexts, e.g., the percentage of people over 65 and Hirschman-Herfindahl index (HHI). Practical Implications: Policymakers should pay greater attention to realizing the full benefits of hospitals' information sharing based on market characteristics.

• Communications for Statistical Applications and Methods
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• v.31 no.4
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• pp.365-375
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• 2024

Diverse methods to evaluate the prediction model of a time to event have been proposed in the context of right censored data where all subjects are subject to be susceptible. A time-dependent AUC (area under curve) measures the predictive ability of a marker based on case group and control one which are varying over time. When a substantial portion of subjects are event-free, a population consists of a susceptible group and a cured one. An uncertain curability of censored subjects makes it difficult to define both case group and control one. In this paper, our goal is to propose a time-dependent AUC for a cure rate model when a censoring distribution is related with covariates. A class of inverse probability of censoring weighted (IPCW) AUC estimators is proposed to adjust the possible sampling bias. We evaluate the finite sample performance of the suggested methods with diverse simulation schemes and the application to the melanoma dataset is presented to compare with other methods.

• Journal of applied mathematics & informatics
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• v.42 no.5
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• pp.1077-1090
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• 2024

In this study, a dual hesitant uncertain setting is employed to study the transportation issue. The dual hesitant fuzzy set handles ambiguous, unreliable, or inaccurate data as well as conditions in real-world practical research queries that are impossible or difficult to solve according to current fuzzy uncertainties. The dual hesitant fuzzy set (DHFS) is composed of a membership hesitant function as well as a non-membership hesitant function. In this investigation, we developed a new scoring formula for converting dual hesitant fuzzy numbers (DHFNs) to crisp values and suggested a novel algorithm called contraharmonic mean for addressing the dual hesitant fuzzy problem of transportation. Excel solver is utilized to find the contraharmonic mean. Additionally, we employed the modified distribution (MODI) method to achieve the best possible result. The recommended approach is then explained using a mathematical instance, and its efficacy can be demonstrated by comparing it to previously used techniques.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.2 no.2
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• pp.81-89
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• 2001

Space systems are operating in a changing and uncertain space environment and are desired to have autonomous capability for long periods of time without frequent telecommunications from the ground station At the same time. requirements for new set of projects/systems calling for ""autonomous"" operations for long unattended periods of time are emerging. Since, by the nature of space systems, it is desired that they perform their mission flawlessly and also it is of extreme importance to have fault-tolerant sensor/actuator sub-systems for the purpose of validating science measurement data for the mission success. Technology innovations attendant on autonomous data validation and health monitoring are articulated for a growing class of autonomous operations of space systems. The greatest need is on focus research effort to the development of a new class of fault-tolerant space systems such as attitude actuators and sensors as well as validation of measurement data from scientific instruments. The characterization for the next step in evolving the existing control processes to an autonomous posture is to embed intelligence into actively control. modify parameters and select sensor/actuator subsystems based on statistical parameters of the measurement errors in real-time. This research focuses on the identification/demonstration of critical technology innovations that will be applied to Autonomous Spacecraft Health Monitoring/Data Validation Control Systems (ASHMDVCS). Systems (ASHMDVCS).

• Proceedings of the Korean Geotechical Society Conference
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• 2010.09a
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• pp.445-456
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• 2010

Massive underground excavation can be carried out recently due to the technical development of the excavation for retaining wall. Feed-back analysis using field measurement results is recommended to secure the stability of the construction because calculated values at stages of the design and the construction are uncertain. Reinforcement plan should be established based on the result of it. This study deals with the underground excavation site, which is under construction and is close to structure(subway) at downtown area. The result of feed-back analysis on the measurement data of displacement at multi-soil layers was reflected to make a plan for safe construction. This case study can be useful information for contingency plan on abnormal displacement which can be occurred at similar underground excavation.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.27 no.6
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• pp.787-793
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• 1994

It has been demonstrated for the finite-difference ocean circulation model that the problem of uncertain forcing and input data can be tackled with an optimization techniques. The uncertainty problem in interesting flow properties is exploring a finite difference ocean circulation model due to the uncertainty in the driving boundary conditions. The mathematical procedure is based upon optimization method by the conjugate gradient method using the simulated data and a simple barotropic model. An example for the ocean circulation model is discussed in which wind forcing and the steady-state circulation are determined from a simulated stream function.

• Smart Structures and Systems
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• v.10 no.4_5
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• pp.353-373
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• 2012

The instrumented Canton Tower is a 610 m high-rise structure, which has been considered as a benchmark problem for structural health monitoring (SHM) research. In this paper, an improved automatic modal identification method is presented based on a natural excitation technique in conjunction with the eigensystem realization algorithm (NExT/ERA). In the proposed modal identification method, damping ratio, consistent mode indicator from observability matrices (CMI_O) and modal amplitude coherence (MAC) are used as criteria to distinguish the physically true modes from spurious modes. Enhanced frequency domain decomposition (EFDD), the data-driven stochastic subspace identification method (SSI-DATA) and the proposed method are respectively applied to extract the modal parameters of the Canton Tower under different environmental conditions. Results of modal parameter identification based on output-only measurements are presented and discussed. User-selected parameters used in those methods are suggested and discussed. Furthermore, the effect of environmental conditions on the dynamic characteristics of Canton tower is investigated.

• Journal of Korean Academy of Nursing
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• v.31 no.6
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• pp.1021-1033
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• 2001

This study sought to find a nursing intervention tool for enhancing elderly women's lives by investigating the causes and the meaning of their grief. Method: This research was derived from a phenomenological tool such as qualitative research design. The data collection took place from December of 2000 until April of 2001 Through systematic interviews and participatory observations of five elderly women attending C welfare center located in downtown Seoul the data was collected. Each interview lasted an hour and a half and was arranged five times. The analysis of this research was conducted using the Giorgi method. Results: \circled1 There was obvious physical and physiological decline caused by aging old; as well as there being spouse health problems, additional physical suffering, signs of senility, and insomnia, \circled2 Further grief was imposed by unpleasant memories of the spouse; infidelity, incapability, and even disregard of her own well-being, \circled3 Then there was pity for children; unfaithful children, uncertain futures of the children, and early death of a child, \circled4 Also, regrettable fate, painful daily acttrities, unreliable factors, bad circumstances, and feelings emptiness were reported, \circled5 Finally, anxiety for the future; ac sense of despair, loneliness, economic hardship, and the fear of imminent death increased grief levels. Conclusion: A variety of programs and social meetings for the elderly to overcome their physiological or psychological crisis should be substantially developed and supported by the government. In order to implement the social welfare for the elderly women, special consideration whether on the governmental level or the personal level, should be devoted to the elderly who live without any financial support or social concern.

• Korean Journal of Adult Nursing
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• v.22 no.3
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• pp.329-341
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• 2010

Purpose: The purpose of this study was to understand the meaning of death experienced by medical and nursing students through end-of-life care practice. Methods: Data were collected by in-depth interviews with twelve (six nursing and six medical) students. Conventional qualitative content analysis was used to analyze the data. Results: This findings were analyzed in three areas: 'feeling from the word of death', 'color association of death', and 'relation between life and death'. Results were three major themes and sixteen categories from the analysis. Three major themes include 'reality of uncertain death', 'have to leave, and 'new perception about death'. Sixteen categories include 'being well', 'fear', 'unknown', 'boundless', 'being with', 'out of sight', 'new start', 'go back to', 'place going by itself', 'place to meet with', 'being transformed', 'a sense of futility', 'the same point', 'a different point', 'continuous line', and 'a crossroad'. Conclusion: The findings suggest a number of themes that nursing and medical students reported about the end of life experiences that could be explored as a way of improving end of life care.

• Korean Journal of Adult Nursing
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• v.26 no.6
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• pp.603-613
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• 2014

Purpose: The purpose of this study was to explore and identify the role adaptation processes of family caregivers with patients transferred from intensive care unit to general ward. Methods: Using a grounded theory methodology, in-depth individual interviews were conducted. Data were collected from 11 participants. The participants were asked about their experiences of role adaptation considering situational contexts and interactional strategies. Transcribed data and field notes were analyzed using constant comparative analysis. Results: The core category was 'becoming almost a nurse with hope and fear'. The identified phenomena by the participants were the joy of being alive, having hope for a full recovery, anxiety and fear of uncertain future, feeling burdensome on a given role. The results included both role adaptation and mal-adaptation of caregivers. Conclusion: The role adaptation processes of family caregiver with patients transferred from intensive care unit to general ward can be explained as becoming almost a nurse with hope and fear. The findings of the study provided fundamental information for developing programs to support the given family caregivers for successful role adaptation.