18 results on '"Young Ji Kim"'
Search Results
2. Genetic Characterization of Feline Parvovirus Isolate Fe–P2 in Korean Cat and Serological Evidence on Its Infection in Wild Leopard Cat and Asian Badger
- Author
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Young Ji Kim, Sun-Woo Yoon, Jin Ho Jang, Dae Gwin Jeong, Beom Jun Lee, and Hye Kwon Kim
- Subjects
feline parvovirus ,feline panleukopenia ,leopard cat ,Asian badger ,serum neutralization ,Veterinary medicine ,SF600-1100 - Abstract
Feline parvovirus (FPV) is a small, non-enveloped, single-stranded DNA virus that infects cats. We recently isolated a feline parvovirus Fe–P2 strain from a dead stray cat in Iksan, 2017. Its partial genomic sequence (4,643 bases) was obtained, and phylogenetic analysis based on the VP2 nucleotide sequence showed that the FPV Fe-P2 strain was closely related to the FPV isolate Gigucheon in cat, 2017 (MN400978). In addition, we performed a serum neutralization (SN) test with the FPV isolates in various mammalian sera. These were from raccoon dog, water deer, Eurasian otter, Korean hare, leopard cat, and Asian badger, which were kindly provided by Chungnam Wild Animal Rescue Center. Notably, serological evidence of its infection was found in Asian badger, Meles leucurus (2/2) and leopard cat, Prionailurus bengalensis (5/8) through SN tests, whereas there was no evidence in raccoon dog, water deer, Eurasian otter, and Korean hare based on the collected sera in this study. These findings might provide partial evidence for the possible circulation of FPV or its related viruses among wild leopard cat and Asian badger in Korea. There should be additional study to confirm this through direct detection of FPVs in the related animal samples.
- Published
- 2021
- Full Text
- View/download PDF
3. Speaking out of turn: How video conferencing reduces vocal synchrony and collective intelligence.
- Author
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Maria Tomprou, Young Ji Kim, Prerna Chikersal, Anita Williams Woolley, and Laura A Dabbish
- Subjects
Medicine ,Science - Abstract
Collective intelligence (CI) is the ability of a group to solve a wide range of problems. Synchrony in nonverbal cues is critically important to the development of CI; however, extant findings are mostly based on studies conducted face-to-face. Given how much collaboration takes place via the internet, does nonverbal synchrony still matter and can it be achieved when collaborators are physically separated? Here, we hypothesize and test the effect of nonverbal synchrony on CI that develops through visual and audio cues in physically-separated teammates. We show that, contrary to popular belief, the presence of visual cues surprisingly has no effect on CI; furthermore, teams without visual cues are more successful in synchronizing their vocal cues and speaking turns, and when they do so, they have higher CI. Our findings show that nonverbal synchrony is important in distributed collaboration and call into question the necessity of video support.
- Published
- 2021
- Full Text
- View/download PDF
4. Visualized Automatic Feedback in Virtual Teams
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Ella Glikson, Anita W. Woolley, Pranav Gupta, and Young Ji Kim
- Subjects
virtual team ,task effort ,feedback ,team composition ,conscientiousness ,awareness systems ,Psychology ,BF1-990 - Abstract
Management of effort is one of the biggest challenges in any team, and is particularly difficult in distributed teams, where behavior is relatively invisible to teammates. Awareness systems, which provide real-time visual feedback about team members’ behavior, may serve as an effective intervention tool for mitigating various sources of process-loss in teams, including team effort. However, most of the research on visualization tools has been focusing on team communication and learning, and their impact on team effort and consequently team performance has been hardly studied. Furthermore, this line of research has rarely addressed the way visualization tool may interact with team composition, while comprehension of this interaction may facilitate a conceptualization of more effective interventions. In this article we review the research on feedback in distributed teams and integrate it with the research on awareness systems. Focusing on team effort, we examine the effect of an effort visualization tool on team performance in 72 geographically distributed virtual project teams. In addition, we test the moderating effect of team composition, specifically team members’ conscientiousness, on the effectiveness of the effort visualization tool. Our findings demonstrate that the effort visualization tool increases team effort and improves the performance in teams with a low proportion of highly conscientious members, but not in teams with a high proportion of highly conscientious members. We discuss the theoretical and practical implications of our findings, and suggest the need of future research to address the way technological advances may contribute to management and research of team processes.
- Published
- 2019
- Full Text
- View/download PDF
5. Dynamics of collective performance in collaboration networks.
- Author
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Victor Amelkin, Omid Askarisichani, Young Ji Kim, Thomas W Malone, and Ambuj K Singh
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Medicine ,Science - Abstract
Today, many complex tasks are assigned to teams, rather than individuals. One reason for teaming up is expansion of the skill coverage of each individual to the joint team skill set. However, numerous empirical studies of human groups suggest that the performance of equally skilled teams can widely differ. Two natural question arise: What are the factors defining team performance? and How can we best predict the performance of a given team on a specific task? While the team members' task-related capabilities constrain the potential for the team's success, the key to understanding team performance is in the analysis of the team process, encompassing the behaviors of the team members during task completion. In this study, we extend the existing body of research on team process and prediction models of team performance. Specifically, we analyze the dynamics of historical team performance over a series of tasks as well as the fine-grained patterns of collaboration between team members, and formally connect these dynamics to the team performance in the predictive models. Our major qualitative finding is that higher performing teams have well-connected collaboration networks-as indicated by the topological and spectral properties of the latter-which are more robust to perturbations, and where network processes spread more efficiently. Our major quantitative finding is that our predictive models deliver accurate team performance predictions-with a prediction error of 15-25%-on a variety of simple tasks, outperforming baseline models that do not capture the micro-level dynamics of team member behaviors. We also show how to use our models in an application, for optimal online planning of workload distribution in an organization. Our findings emphasize the importance of studying the dynamics of team collaboration as the major driver of high performance in teams.
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- 2018
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6. Synthesis of Aromatic and Aliphatic N-Heterocyclic Salts and Their Application as Organic Electrolyte Supporters in Electrochemical Capacitor
- Author
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Young-Ji Kim, Seong-Ho Choi, Soo-Yeoun Kim, and Jaeyeong Choi
- Subjects
Technology ,Tetrafluoroborate ,QH301-705.5 ,QC1-999 ,Electrolyte ,Electrochemistry ,Medicinal chemistry ,chemistry.chemical_compound ,Hexafluorophosphate ,TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY ,General Materials Science ,Biology (General) ,Acetonitrile ,Instrumentation ,N-heterocyclic aromatic salts ,QD1-999 ,Electrochemical potential ,N-heterocyclic aliphatic salts ,Fluid Flow and Transfer Processes ,Substitution reaction ,vanadium electrochemical capacitor ,counter-anion-exchange reaction ,Process Chemistry and Technology ,Physics ,General Engineering ,vanadium acetylacetonate ,Engineering (General). Civil engineering (General) ,energy-storage chemicals ,Computer Science Applications ,Chemistry ,chemistry ,Cyclic voltammetry ,TA1-2040 - Abstract
Aromatic and aliphatic N-heterocyclic chemical salts were synthesized by counter-anion-exchange reactions after substitution reactions in order to apply them as organic electrolyte supporters in an electrochemical capacitor (super capacitor). The aromatic N-heterocyclic salts were N-methylpyridinium tetrafluoroborate ([MPy]+[BF4]−), N-methylpyridinium hexafluorophosphate ([MPy]+[PF6]−), 1,3-dibuthylimidazolium tetrafluoroborate ([DI]+[BF4]−), 1,3-dibuthylimidazolium hexafluorophosphate ([DI]+[PF6]−), 1-buthyl-4-methyl-1,2,4-triazolium tetrafluoroborate ([BMTA]+[BF4]−), and 1-buthyl-4-methyl-1,2,4-triazolium hexafluorophosphate ([BMTA]+[PF6]−). The aliphatic N-heterocyclic salts were N,N-dimethylpiperilidium tetrafluoroborate ([DMP]+[BF4]−), N,N-dimethylpiperilidium hexafluorophosphate ([DMPy]+[PF6]−), N,N-dimethylpyrrolidium tetrafluoroborate ([DMPy]+[BF4]−) and N,N-dimethylpyrrolidium hexafluorophosphate ([DMPy]+[PF6]−), 1-ethyltriethamine tetrafluoroborate ([E-TEDA]+[BF4]−), and 1-ethyltriethamine hexafluorophosphate ([E-TEDA]+[PF6]−), respectively. We confirmed the successful synthesis of the aromatic and aliphatic N-heterocyclic chemical salts by 1H-NMR, FT-IR, and GC/MS analysis before conducting the counter-anion-exchange reactions. Then, we determined the electrochemical potential of vanadium acetylacetonate (V(acac)3) under acetonitrile in the presence of the N-heterocyclic chemical salts as energy-storage chemicals. By cyclic voltammetry, the maximum voltages with the N-heterocyclic chemical salts in acetonitrile reached 2.2 V under a fixed current value. Charge-discharge experiments were performed in the electrochemical capacitor with an anion-exchange membrane using a non-aqueous electrolyte prepared with a synthesized N-heterocyclic salt in acetonitrile.
- Published
- 2021
7. Speaking out of turn: How video conferencing reduces vocal synchrony and collective intelligence
- Author
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Young Ji Kim, Prerna Chikersal, Laura Dabbish, Anita Williams Woolley, and Maria Tomprou
- Subjects
Male ,Intelligence ,Social Sciences ,computer.software_genre ,Videoconferencing ,Sociology ,Medicine and Health Sciences ,Psychology ,Verbal Communication ,Intelligence Tests ,Multidisciplinary ,Collective intelligence ,Social Communication ,Vocal cues ,Facial Expression ,Social Perception ,Research Design ,Engineering and Technology ,Medicine ,Female ,The Internet ,Cues ,Anatomy ,Research Article ,Cognitive psychology ,Adult ,Adolescent ,Psychometrics ,Science ,Nonverbal communication ,Humans ,Speech ,Facial Expressions ,Nonverbal Communication ,Sensory cue ,Internet ,Behavior ,Facial expression ,Verbal Behavior ,Human intelligence ,business.industry ,Cognitive Psychology ,Biology and Life Sciences ,Communications ,Group Processes ,Speech Signal Processing ,Face ,Signal Processing ,Human Intelligence ,Cognitive Science ,business ,Head ,computer ,Neuroscience - Abstract
Collective intelligence (CI) is the ability of a group to solve a wide range of problems. Synchrony in nonverbal cues is critically important to the development of CI; however, extant findings are mostly based on studies conducted face-to-face. Given how much collaboration takes place via the internet, does nonverbal synchrony still matter and can it be achieved when collaborators are physically separated? Here, we hypothesize and test the effect of nonverbal synchrony on CI that develops through visual and audio cues in physically-separated teammates. We show that, contrary to popular belief, the presence of visual cues surprisingly has no effect on CI; furthermore, teamswithoutvisual cues are more successful in synchronizing their vocal cues and speaking turns, and when they do so, they have higher CI. Our findings show that nonverbal synchrony is important in distributed collaboration and call into question the necessity of video support.
- Published
- 2021
8. INTELLIGENT MACHINES AND TEAMWORK: HELP OR HINDRANCE?
- Author
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BEI YAN, LEWIS, KYLE, FIGGE, PATRICK, HOLLINGSHEAD, ANDREA B., ALEXANDER, KRISTEN STEVES, YOUNG JI KIM, and CHENGYU FANG
- Abstract
Whereas research has examined how AI affects individual work, few studies explore the impact on task-performing teams. In an experiment, we compared the process and performance of teams with access to an embodied intelligent personal assistant (EIA) to those without access. We expected that EIA use would enhance team performance in the short term but interfere with the development of a transactive memory system (TMS). A TMS is a collective memory system that has strong positive effects on sustained team performance. Results showed that EIA use did not enhance team performance and seemed harmful to the development of a TMS. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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9. Rapid Growing Eosinophilic Granuloma in Skull after Minor Trauma
- Author
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Young-Ji Kim and Kwang Wook Jo
- Subjects
medicine.medical_specialty ,Eosinophilic granuloma ,medicine.diagnostic_test ,business.industry ,medicine.medical_treatment ,Craniocerebral trauma ,Rapid progression ,Magnetic resonance imaging ,Physical examination ,Case Report ,medicine.disease ,Cranioplasty ,Surgery ,Skull ,medicine.anatomical_structure ,Frontal bone ,Minor trauma ,medicine ,Forehead ,business ,Child - Abstract
The authors present a case of rapidly progressing eosinophilic granuloma (EG) of the skull without hemorrhage after minor trauma. A 6-year-old boy presented with a soft mass on the midline of his forehead. He had a surgery for EG 19 months ago. One month earlier, computed tomography (CT) and bone scans were performed to evaluate the possible recurrence of EG, and there was no evidence of recurrence in CT. However, a slightly increased uptake in the bone scan was noted on the midline of the forehead. A rapid growing mass developed in a new spot after a minor trauma 7 days before the patient arrived at the clinic. His physical examination was unremarkable, except for a non-tender, soft, and immobile mass. A plain skull X-ray and CT showed a lytic bony defect on the midline of the frontal bone. Magnetic resonance imaging showed a 1.4 cm sized enhancing mass. Surgical resection and cranioplasty were done. The role of trauma in the development of EG is unclear. However, our case suggests that minor trauma is an aggravating factor for EG formation. Careful observation with regular follow-up is necessary in patients with EG after minor trauma.
- Published
- 2015
10. Quantifying collective intelligence in human groups.
- Author
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Riedl, Christoph, Young Ji Kim, Gupta, Pranav, Malone, Thomas W., and Woolley, Anita Williams
- Subjects
- *
SWARM intelligence , *SOCIAL groups , *GROUP process , *ABILITY grouping (Education) - Abstract
Collective intelligence (CI) is critical to solving many scientific, business, and other problems, but groups often fail to achieve it. Here, we analyze data on group performance from 22 studies, including 5,279 individuals in 1,356 groups. Our results support the conclusion that a robust CI factor characterizes a group's ability to work together across a diverse set of tasks. We further show that CI is predicted by the proportion of women in the group, mediated by average social perceptiveness of group members, and that it predicts performance on various out-of-sample criterion tasks. We also find that, overall, group collaboration process is more important in predicting CI than the skill of individual members. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
11. Trade Integration and Business Cycle Synchronization in Latin American Countries.
- Author
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Young Ji Kim and Sunghyun Kim
- Published
- 2020
- Full Text
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12. Improvement of Karmali Agar by Supplementation with Tazobactam for Detecting Campylobacter in Raw Poultry.
- Author
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YOUNG-JI KIM, CHON-JUNG WHAN, HONG-SEOK KIM, KWANG-YEOP KIM, JIN-HYEOK YIM, SEUNG-HAK CHO, and KUN-HO SEO
- Subjects
- *
CAMPYLOBACTER infections , *TAZOBACTAM , *BETA lactamases , *ANTIBACTERIAL agents , *ISOLATION of biotechnological microorganisms , *DIAGNOSIS , *THERAPEUTICS , *POULTRY - Abstract
In this study, Karmali agar was modified by adding tazobactam (T-Kannali agar) to suppress the growth of extendedspectrum p-lactamase (ESBL)-producing Escherichia coli, which frequently contaminates raw poultry meat. By inoculating 30 Campylobacter spp. strains and 25 ESBL-producing E. coli strains onto Karmali agar and T-Karmali agar containing various concentrations of the antibacterial agent, we determined the optimum concentration of tazobactam to be 4 mg/liter. The Campylobacter spp. isolation rate on T-Karmali agar (13.3%) was higher than that on Karmali agar (8.3%), although the difference was not significant (P > 0.05). However, T-Karmali agar showed a significantly greater selectivity than Karmali agar, as evaluated by comparing the numbers of contaminated agar plates (20.8 versus 82.5%; P < 0.05) and the growth indexes (1.36 versus 2.83) of competing flora. The predominant competing flora on Karmali and T-Karmali agar were identified as ESBLproducing E. coli. Thus, T-Karmali agar might be effective for determining the real prevalence of Campylobacter in raw poultry and, especially, contamination with ESBL-producing E. coli. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
13. A fully addressable micro-array chip integrated with cascade multiplexors for selective cell loading and retrieval.
- Author
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Xia Lou, Jaehoon Chung, Young-Ji Kim, Il-Joo Cho, and Euisik Yoon
- Published
- 2009
- Full Text
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14. Microfluidic array chip for single-cell isolation using two-way pneumatic actuation.
- Author
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Young-Ji Kim, Jaehoon Chung, Hyung-Kew Lee, and Euisik Yoon
- Published
- 2008
- Full Text
- View/download PDF
15. Three Dimensional Electrode Structure Controlled by Dielectrophoresis for Flow-Through Micro Electroporation System.
- Author
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Youn-Suk Choi, Young-Ji Kim, Maesoon Im, Byoung-Gyun Kim, Kwang-Seok Yun, and Euisik Yoon
- Published
- 2006
- Full Text
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16. Molecular characterization of myostatin-like genes expressed highly in the muscle tissue from Morotoge shrimp, Pandalopsis japonica.
- Author
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Kyoung Sun Kim, Young-Ji Kim, Jeong Min Jeon, Yang Soon Kang, Young Shil Kang, Chul Woong Oh, and Hyun-Woo Kim
- Subjects
- *
SHRIMPS , *CRUSTACEA , *AMINO acids , *TRANSFORMING growth factors , *MOLTING , *PHYLOGENY - Abstract
Myostatin is one of the transforming growth factor (TGF)-β family members and plays inhibitory roles in the development and growth of muscle in mammals. Mammalian myostatins have been studied intensively, considering its medical and industrial potential use. Still, limited information is available about myostatin homologues in crustaceans. In the present study, we isolated for the first time cDNA that encodes for myostatin-like protein (Pj-MSTN) from Morotoge shrimp, Pandalopsis japonica. The putative mature peptide of Pj-MSTN was composed of 109 amino acids, which contains an additional amino acid residue compared with mammalian myostatins. Pj-MSTN exhibited 32% amino acid sequence identity and 52% similarity to human myostatin. Multiple sequence alignment analysis indicated that Pj-MSTN shared the conserved proteolytic cleavage site (RXXR) for its maturation and nine cysteine residues for disulphide bridges. These results suggest that Pj-MSTN has conserved the three-dimensional structure of TGF-β family members in vertebrates. Phylogenetic analysis suggests that Pj-MSTN is a primitive form of vertebrate myostatin and GDF11. The expression of Pj-MSTN was not just identified in muscular tissues, suggesting that Pj-MSTN functions differently from mammalian myostatin. Ablation of the X-organ/sinus gland complex significantly reduced the expression of Pj-MSTN in most tissues, suggesting its potential association with moulting. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
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17. Intelligent Machines and Teamwork: Help or Hindrance?
- Author
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Yan, Bei, Lewis, Kyle, Figge, Patrick, Hollingshead, Andrea, Alexander, Kristen Steves, Young Ji Kim, and Chengyu Fang
- Abstract
Intelligent machines are being deployed as human assistants in a variety of corporate, military, and healthcare settings. Research has generally examined how intelligent machines affect individual human behavior, but very few studies explore how intelligent machines impact teams and teamwork. We examine the performance and processes of teams using an embodied intelligent personal assistant (EIA) to complete a collaborative task. We expected that EIA use would enhance team performance on an intellective task but interfere with the development of a transactive memory system (TMS). A TMS is a collective memory system that, once developed, has strong positive effects on sustained team performance. Our findings show that under some conditions EIA use may be helpful to team performance initially, but harmful to the eventual development of a TMS. We highlight the need for new theorizing about the generative and destructive impacts of intelligent machine use in teams." [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
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18. Effect of oral administration of testosterone on brachial arterial vasoreactivity in men with coronary artery disease.
- Author
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Kang SM, Jang Y, Kim Ji, Chung N, Cho SY, Chae JS, and Lee JH
- Subjects
- Administration, Oral, Aged, Brachial Artery physiopathology, Coronary Disease blood, Female, Humans, Lipids blood, Male, Middle Aged, Vasodilation drug effects, Brachial Artery drug effects, Coronary Disease physiopathology, Endothelium, Vascular drug effects, Testosterone administration & dosage
- Published
- 2002
- Full Text
- View/download PDF
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