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Boutin Louis,Morisson Louis,Riché Florence,Barthélémy Romain,Mebazaa Alexandre,Soyer Philippe,Gallix Benoit,Dohan Anthony,Chousterman Benjamin G. 대한중환자의학회 2023 Acute and Critical Care Vol.38 No.3
Background: Sepsis is a severe and common cause of admission to the intensive care unit (ICU). Radiomic analysis (RA) may predict organ failure and patient outcomes. The objective of this study was to assess a model of RA and to evaluate its performance in predicting in-ICU mortality and acute kidney injury (AKI) during abdominal sepsis. Methods: This single-center, retrospective study included patients admitted to the ICU for abdominal sepsis. To predict in-ICU mortality or AKI, elastic net regularized logistic regression and the random forest algorithm were used in a five-fold cross-validation set repeated 10 times.Results: Fifty-five patients were included. In-ICU mortality was 25.5%, and 76.4% of patients developed AKI. To predict in-ICU mortality, elastic net and random forest models, respectively, achieved areas under the curve (AUCs) of 0.48 (95% confidence interval [CI], 0.43–0.54) and 0.51 (95% CI, 0.46–0.57) and were not improved combined with Simplified Acute Physiology Score (SAPS) II. To predict AKI with RA, the AUC was 0.71 (95% CI, 0.66–0.77) for elastic net and 0.69 (95% CI, 0.64–0.74) for random forest, and these were improved combined with SAPS II, respectively; AUC of 0.94 (95% CI, 0.91–0.96) and 0.75 (95% CI, 0.70–0.80) for elastic net and random forest, respectively.Conclusions: This study suggests that RA has poor predictive performance for in-ICU mortality but good predictive performance for AKI in patients with abdominal sepsis. A secondary validation cohort is needed to confirm these results and the assessed model.
Voter Perceptions and Behavior in East Asian Mixed Systems
Rich, Timothy S. World Association for Triple Helix and Future Stra 2013 Journal of Contemporary Eastern Asia Vol.12 No.1
How do mixed legislative systems shape voter behavior and public perceptions? Through an analysis of the electoral systems in Japan, South Korea, and Taiwan, this paper evaluates the extent to which the public in these three countries understand their mixed systems and whether claims of voter ignorance translate into irrational voting behavior based on the institutional effects of mixed systems. Through a multi-method approach including data from outside of East Asia, this analysis seeks to determine whether these three cases exhibit patterns consistent with other mixed systems. Empirical analysis affirms levels of strategic voting consistent with comprehension of electoral rules. Furthermore, this analysis suggests a disconnect between practical knowledge and electoral expectations.
Evidence on a New Keynesian Theory of the Output-Inflation Trade-Off from the U.S.
Rich,Robert W.,Rhee,Wooheon THE KOREAN ECONOMIC SOCIETY 1996 JOURNAL OF ECONOMIC THEORY AND ECONOMETRICS Vol.2 No.2
This paper examines quarterly U.S. data for the period 1955-1987 to test the prediction of the New Keynesian model of an inverse relation between inflation and the output-inflation trade-off. The analysis allows for time-variation in the trade-off by employing Markov regime-switching model to characterize changes in the time series properties of the inflation process. We conclude that the evidence in this study provides strong support for a New Keynesian explanation of the output-inflation trade-off for the U.S. over the post-war period.
Rich, Timothy S. World Association for Triple Helix and Future Stra 2016 Journal of Contemporary Eastern Asia Vol.15 No.1
A large literature identifies perceptual differences between citizens that support winning parties versus losing parties. These analyses fail to capture the complexity of mixed member legislative systems where one can be a winner or loser at both the national and district level. This paper proposes a two-level framework for the analysis of mixed system. An analysis of Taiwan’s first election under a mixed system provides evidence that both support for a national winner and district level winner produce boosts in positive perceptions of the electoral system. National success appears to be a larger motivator of perceptions.
Ditching the Party: Disaggregating Split Ticket Voting in Taiwan's 2016 Legislative Election
Rich, Timothy S. Korea Consensus Institute(KCI) 2019 Analyses & alternatives Vol.3 No.1
What motivates split-ticket voting in mixed electoral systems, where voters choose one party in district races and another party on the party list ballot? While much of the literature assumes strategic intent, three aspects commonly are overlooked: the competitiveness of district races, the presence of a district candidate from one's preferred party, and whether voters know the electoral threshold for party list seats. Furthermore, few studies disaggregate types of split-ticket voting (e.g. not voting for one's preferred party in a district vs. party list). Taiwan provides an intriguing case study for analysis, not only as a relatively new adopter of a mixed system, but also the presence of additional conditions that would encourage at least the consideration of a split ticket. Using survey data from the Taiwan's Election and Democratization Studies (TEDS) after the Taiwan's 2016 Legislative Yuan election, this analysis finds that knowing the threshold, the winner's margin, and the placement of a district candidate from one's preferred party all influence split-ticket voting among those with a partisan preference. However, closer inspection identifies a distinction between defecting from the district versus the party list. Evidence shows that district competitiveness and candidate placement influences defection from the district candidate, while the electoral threshold influences defection from the party list. The results add to our understanding of strategic and non-strategic incentives in mixed systems.
The Complexity of Everyday Life
RICH LING 한국언론학회 2006 Asian Communication Research Vol.3 No.1
This paper examines the interaction of mobile communication, access to transportation on the one hand and the experience of stress and time pressure on the other. The analysis is based on a questionnaire survey carried out in Norway in 2005. After carrying out a series of interviews with families in the Oslo area, a questionnaire was developed and sent to a sample of Norwegian parents ― defined as persons living in households with children (under 18 years of age). Intact, single parent homes and reconstituted families were included in the sample. There were a total of 2030 respondents. In order to examine this, the experience of stress and time pressure were examined in relation to the variables of gender, hours worked, distance to work, life phase of children, adult free time activities, responsibility for shopping, perception of the importance of the car in everyday life, and perception of the mobile phone in everyday life. The analysis shows that among other things, the elements that covaried with the dpendent variables include a sense of dependence on the car, a preference for an active life style, a sense that the mobile telephone could be used for family coordination, fewer hours worked, gender (being male and participation in adult activities. Thus, the analysis suggests that user’s sense of dependency on the mobile phone and the automobile are a part of the way in which they manage the stress of everyday life.