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Search Results: 1 - 10 of 20463 matches for " Jongwha Kim "
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Dynamic correlations between heart and brain rhythm during Autogenic meditation
Dae-Keun Kim,Kyung-Mi Lee,Jongwha Kim,Seung Wan Kang
Frontiers in Human Neuroscience , 2013, DOI: 10.3389/fnhum.2013.00414
Abstract: This study is aimed to determine significant physiological parameters of brain and heart under meditative state, both in each activities and their dynamic correlations. Electrophysiological changes in response to meditation were explored in 12 healthy volunteers who completed 8 weeks of a basic training course in autogenic meditation. Heart coherence, representing the degree of ordering in oscillation of heart rhythm intervals, increased significantly during meditation. Relative EEG alpha power and alpha lagged coherence also increased. A significant slowing of parietal peak alpha frequency was observed. Parietal peak alpha power increased with increasing heart coherence during meditation, but no such relationship was observed during baseline. Average alpha lagged coherence also increased with increasing heart coherence during meditation, but weak opposite relationship was observed at baseline. Relative alpha power increased with increasing heart coherence during both meditation and baseline periods. Heart coherence can be a cardiac marker for the meditative state and also may be a general marker for the meditative state since heart coherence is strongly correlated with EEG alpha activities. It is expected that increasing heart coherence and the accompanying EEG alpha activations, heart brain synchronicity, would help recover physiological synchrony following a period of homeostatic depletion.
Sociodemographic Risk Factors of Diabetes and Hypertension Prevalence in Republic of Korea
Hosik Min,JongWha Chang,Rajesh Balkrishnan
International Journal of Hypertension , 2010, DOI: 10.4061/2010/410794
Abstract: This study examined the relationships between SES and diabetes and hypertension for Korean adults using the Korean National Health and Nutritional Examination Survey. To handle the four dummy dependent variables: Diabetes and Hypertension, Diabetes alone, Hypertension alone, and Diabetes or Hypertension, four different logistic models were conducted. The descriptive statistics showed a considerable amount of comorbidity between the combined dependent variable of diabetes and hypertension. To gauge more realistic measures of SES, education and income were combined together as four dummy categories. The SES factor indeed had significant impacts on diabetes and hypertension. Socioeconomically disadvantaged groups demonstrated to have increased likelihood of having these diseases. However, we could not find the strong compensating effect between education and income; the higher level of education but lower income variable was only significant in having both diseases, and the higher income but lower level of education variable was only significant in having hypertension alone and either one of the diseases. Only the highest SES one, the one with a higher level of education and a higher income, was significantly lowering the likelihood of having these diseases in all models. Therefore, public policy and intervention programs should focus on individuals matching these socioeconomic characteristics.
Sociodemographic Risk Factors of Diabetes and Hypertension Prevalence in Republic of Korea
Hosik Min,JongWha Chang,Rajesh Balkrishnan
International Journal of Hypertension , 2010, DOI: 10.4061/2010/410794
Abstract: This study examined the relationships between SES and diabetes and hypertension for Korean adults using the Korean National Health and Nutritional Examination Survey. To handle the four dummy dependent variables: Diabetes and Hypertension, Diabetes alone, Hypertension alone, and Diabetes or Hypertension, four different logistic models were conducted. The descriptive statistics showed a considerable amount of comorbidity between the combined dependent variable of diabetes and hypertension. To gauge more realistic measures of SES, education and income were combined together as four dummy categories. The SES factor indeed had significant impacts on diabetes and hypertension. Socioeconomically disadvantaged groups demonstrated to have increased likelihood of having these diseases. However, we could not find the strong compensating effect between education and income; the higher level of education but lower income variable was only significant in having both diseases, and the higher income but lower level of education variable was only significant in having hypertension alone and either one of the diseases. Only the highest SES one, the one with a higher level of education and a higher income, was significantly lowering the likelihood of having these diseases in all models. Therefore, public policy and intervention programs should focus on individuals matching these socioeconomic characteristics. 1. Introduction Diabetes and hypertension are very common diseases in Republic of Korea as well as in other developed countries [1], on average, around 8.0% of Koreans reported that they had diabetes in 2007, and around 28% of Koreans reported that they had hypertension [2–5]. In addition, the prevalence for both diseases is increasing [5, 6]. Although diabetes and hypertension are not among the top leading causes of death, such as cancer and stroke, these two diseases draw attention from the public due to their increasing trends, while cancer and stroke are declining. Even diabetes has been ranked the 6th leading cause of death and is known as costly disease [7]. The prevalence of diabetes and hypertension increases with age [8]. Given the fast pace of population aging in Republic of Korea, one can assume that their prevalence will continue to rise [9]. In addition, these two diseases have been known for their high comorbidity [10–13]. It has been estimated that 20%–60% or even more of diabetic complications can be attributed to hypertension [11, 13]. Also, the prevalence of hypertension in diabetic individuals appears to be 1.5 to 3 times higher than in
Disparities in health care utilization among Latino children suffering from asthma in California
Jongwha Chang, Isha Patel, Sherry T Liu, et al
Pediatric Health, Medicine and Therapeutics , 2011, DOI: http://dx.doi.org/10.2147/PHMT.S15717
Abstract: parities in health care utilization among Latino children suffering from asthma in California Original Research (7682) Total Article Views Authors: Jongwha Chang, Isha Patel, Sherry T Liu, et al Published Date January 2011 Volume 2011:2 Pages 1 - 8 DOI: http://dx.doi.org/10.2147/PHMT.S15717 Jongwha Chang1*, Isha Patel1*, Sherry T Liu2, Alexander N Ortega3, Jatin Srivastava4, Yoon Shin Park5, Sarah Kirk6, Rajesh Balkrishnan1,7,8 1Department of Social and Administrative Science, University of Michigan, Ann Arbor, MI; 2College of Public Health, The Ohio State University, Columbus, OH; 3School of Public Health, University of California, Los Angeles, CA; 4EW Scripps School of Journalism, Ohio University, Athens, OH; 5Department of Pharmaceutical Science, University of Michigan, Ann Arbor, MI; 6Texas Asthma Control Program, Texas Department of State Health Services, Austin, TX; 7Center for Medication Use, Policy and Economics, 8Department of Health Management and Policy, University of Michigan, Ann Arbor, MI, USA *Both authors contributed equally to this project. Objectives: To examine any racial and ethnic differences in health care utilization among children with asthma by application of the Aday and Anderson’s behavioral model of health care utilization. Methods: The California Health Interview Survey (CHIS) is a noninstitutionalized household survey of California residents conducted biannually since 2001. Cross-sectional survey data were analyzed to identify differences by race and ethnicity among children with asthma. After adjusting for sample weights and design effects, children with asthma comprised a sample size of 400,000 in the 2007 CHIS database. Disparities in health care utilization across all racial and ethnic categories were analyzed using multivariate logistic regression analysis. Results: Latino children with asthma were 49% more likely to have visited an emergency department in the previous year (P < 0.05) and 57% less likely to have visited a doctor (P < 0.05) compared with non-Latino children with asthma, after controlling for confounding variables. Furthermore, Puerto Rican children were 72% more likely to have visited an emergency department (P < 0.05) in the previous year and 38% less likely to have visited a doctor (P < 0.07) compared with non-Puerto Rican children. Conclusion: This study provides evidence of disparities in health care utilization among Latino children overall as well as in Latino children belonging to different subgroups suffering from asthma. Examining factors leading to differences within the Latino subgroups could help to guide the tailoring of interventions and health care programs for children with asthma, thereby improving access to health care services for this underrepresented minority.
Patient satisfaction with obstetricians and gynecologists compared with other specialties: analysis of US self-reported survey data
Isha Patel, Jongwha Chang, Jatin Srivastava, et al
Patient Related Outcome Measures , 2011, DOI: http://dx.doi.org/10.2147/PROM.S15747
Abstract: tient satisfaction with obstetricians and gynecologists compared with other specialties: analysis of US self-reported survey data Original Research (4128) Total Article Views Authors: Isha Patel, Jongwha Chang, Jatin Srivastava, et al Published Date January 2011 Volume 2011:2 Pages 21 - 26 DOI: http://dx.doi.org/10.2147/PROM.S15747 Isha Patel1,2,3, Jongwha Chang1,2,3, Jatin Srivastava4, Steven Feldman5, Michelle Levender5, Rajesh Balkrishnan1,2,3,6 1Clinical, Social, and Administrative Sciences, College of Pharmacy, 2Center for Medication Use, Policy, and Economics, 3Center of Global Health, University of Michigan, Ann Arbor, Michigan; 4EW Scripps School of Journalism, Ohio University, Athens, Ohio; 5Department of Dermatology, Wake Forest University Baptist Medical Center, Medical Center Boulevard, Winston-Salem, North Carolina; 6Department of Health Management and Policy, University of Michigan, Ann Arbor, Michigan, USA Background: Few studies in the US have evaluated patient satisfaction with physicians across different specialties. We examined patient satisfaction and attitudes toward physicians during outpatient visits in the health care system, including obstetricians and gynecologists and other specialty physicians. Methods: We conducted a cross-sectional and national Web-based survey among anonymous patients who rated their physicians according to satisfaction with treatment on the basis of their experience during their most recent outpatient visits. The survey was user-friendly, validated, and helped patients identify their physicians according to specialty and rate them on a scale of 0 ("not at all satisfied") to 10 ("extremely satisfied"). The patient satisfaction in obstetricians and gynecologists and other specialists were assessed using logistic regression analysis. Results: A total of 7938 patients who rated physicians belonging to the categories of obstetricians and gynecologists (n = 1903) and other specialties (n = 6035) were included in the study. Other things being equal, the odds of earning a satisfaction rating were almost 55% higher for visits to obstetricians and gynecologists than for other specialties (odds ratio [OR] 1.55 [1.15, 2.09], P < 0.01). Also, other things being equal, compared with other specialists, the odds of patient satisfaction due to the caring and friendly attitude of a physician were three times higher for obstetricians and gynecologists, with a logit coefficient of 1.28 (OR, 3.59 [3.17, 4.07], P < 0.001). Conclusion: Patient satisfaction ratings associated with caring and friendly attitude were higher for obstetricians and gynecologists compared to other specialists. Even though several factors influence patient satisfaction, adoption of factors like reducing waiting times, effective patient–physician communication, and involving patients in the decision-making process might aid physicians in achieving optimal results.
Patient satisfaction with obstetricians and gynecologists compared with other specialties: analysis of US self-reported survey data
Isha Patel,Jongwha Chang,Jatin Srivastava,et al
Patient Related Outcome Measures , 2011,
Abstract: Isha Patel1,2,3, Jongwha Chang1,2,3, Jatin Srivastava4, Steven Feldman5, Michelle Levender5, Rajesh Balkrishnan1,2,3,61Clinical, Social, and Administrative Sciences, College of Pharmacy, 2Center for Medication Use, Policy, and Economics, 3Center of Global Health, University of Michigan, Ann Arbor, Michigan; 4EW Scripps School of Journalism, Ohio University, Athens, Ohio; 5Department of Dermatology, Wake Forest University Baptist Medical Center, Medical Center Boulevard, Winston-Salem, North Carolina; 6Department of Health Management and Policy, University of Michigan, Ann Arbor, Michigan, USABackground: Few studies in the US have evaluated patient satisfaction with physicians across different specialties. We examined patient satisfaction and attitudes toward physicians during outpatient visits in the health care system, including obstetricians and gynecologists and other specialty physicians.Methods: We conducted a cross-sectional and national Web-based survey among anonymous patients who rated their physicians according to satisfaction with treatment on the basis of their experience during their most recent outpatient visits. The survey was user-friendly, validated, and helped patients identify their physicians according to specialty and rate them on a scale of 0 ("not at all satisfied") to 10 ("extremely satisfied"). The patient satisfaction in obstetricians and gynecologists and other specialists were assessed using logistic regression analysis. Results: A total of 7938 patients who rated physicians belonging to the categories of obstetricians and gynecologists (n = 1903) and other specialties (n = 6035) were included in the study. Other things being equal, the odds of earning a satisfaction rating were almost 55% higher for visits to obstetricians and gynecologists than for other specialties (odds ratio [OR] 1.55 [1.15, 2.09], P < 0.01). Also, other things being equal, compared with other specialists, the odds of patient satisfaction due to the caring and friendly attitude of a physician were three times higher for obstetricians and gynecologists, with a logit coefficient of 1.28 (OR, 3.59 [3.17, 4.07], P < 0.001).Conclusion: Patient satisfaction ratings associated with caring and friendly attitude were higher for obstetricians and gynecologists compared to other specialists. Even though several factors influence patient satisfaction, adoption of factors like reducing waiting times, effective patient–physician communication, and involving patients in the decision-making process might aid physicians in achieving optimal results.Keywords: patient sati
Design of Quantification Model for Ransom Ware Prevent  [PDF]
Donghyun Kim, Seoksoo Kim
World Journal of Engineering and Technology (WJET) , 2015, DOI: 10.4236/wjet.2015.33C030
Abstract:

The growth of ICT within the society has become increasingly digitized, thus, the overall activity has amounted to various researches for protecting any data from malicious threats. Recently, ransomware has been a rapidly propagated subject for social engineering techniques especially the ransomware. Users can delete a ransomeware code using an antivirus software code. However, the encrypted data would be impossible to recover. Therefore, ransomware must be prevented and must have early detection before it infects any data. In this paper, we are proposing a quantification model to prevent and detect any cryptographic operations in the local drive.

Trends of Noninvasive Radiofrequency and Minimally Invasive Treatment for the Management of Facial Aging  [PDF]
Sunghee Kim, Moonjong Kim
Journal of Cosmetics, Dermatological Sciences and Applications (JCDSA) , 2019, DOI: 10.4236/jcdsa.2019.91003
Abstract: Various treatments for the management of facial aging have been performed among which noninvasive radio-frequency (RF; i.e., thermage) treatment and minimally invasive treatments are on the rise. The purpose of this study was to analyze trends of the treatment of facial aging in Korea and to investigate relationships between the use of noninvasive RF and minimally invasive treatments. A retrospective analysis conducted on data from 4021 patients showed that thermage treatment increased by 134.9% over 5 years. As a person ages, the rate of facial treatment with both the botulinum toxin (for the masseter and lines of the glabella, lateral canthus, and forehead) and the PDO thread lift increases. The use of the treatments, nasolabial fold filler and Silhouette Soft Thread, however, was not associated with aging. The patients receiving thermage treatment were less likely to undergo any of the other treatments including PDO thread lift, Silhouette Soft Thread, nasolabial fold filler, or any of the botulinum toxin treatments. Overall, the results showed that patients who had received noninvasive RF tended to receive less minimally invasive treatment.
The Effect of Prunella on Anti-Inflammatory Activity in RAW264.7 Mouse Macrophage Cells  [PDF]
Meehye Kim
Food and Nutrition Sciences (FNS) , 2012, DOI: 10.4236/fns.2012.39170
Abstract: The extracts of Prunella vulgaris L. (Labiatae), a popular Western and Chinese herbal medicine, was shown to have anti-inflammatory properties, which might be due to partially, their rosmarinic acid content. Inhition of prostaglandine E2 (PGE2) production in lipopolysaccharide (LPS) stimulated RAW264.7 mouse macrophage cells was assessed with an enzyme immunoassay (EIA) following 8-hour treatments with Prunella vulgaris extracts or fractions. Results showed that 95% ethanol extracts from P. vulgaris significantly inhibited PGE2 production. In further studies, fraction 2 from the 95% ethanol extract of P. vulgaris significantly reduced PGE2 production at 66 µg/ml (72% reduction). Cytotoxic-ity did not play a role in the noted reduction of PGE2 seen in either the extracts or fractions from P. vulgaris. High performance liquid chromatography analysis showed that there was 1.4 mM rosmarinic acid in 95% ethanol Prunella extract (201 mg/ml crude extract). Our results suggest that rosmarinic acid may contribute toward the anti-inflammatory activity of Prunella in a dose-response manner. Prunella might have a potential to be used as a functional food for anti-inflammatory activity.
An Effect of the Elastic Energy Stored in the Muscle-Tendon Complex at Two Different Coupling-Time Conditions during Vertical Jump  [PDF]
Sukwon Kim
Advances in Physical Education (APE) , 2013, DOI: 10.4236/ape.2013.31002
Abstract:

A study was performed to evaluate effects of elastic energy stored pre-stretch on the mechanical work output while performing vertical jump. Eight male volunteers of age between 21-29 years old participated in the present study. The present study hypothesized that the vertical jump height during countermovement jumps (CMJ) would be higher than that during squat jump (SJ). During squat jump, a volunteer paused 0.5 sec before making upward movement. The results showed that ground reaction forces and vertical jump displacements were higher in CMJ in comparison to SJ. The study concluded that part of the positive work measured did derive from the recoil of the elastic component of the muscle-tendon complex.

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