3D and Environmental Audio 3D in OpenSL ES

Nathan Charles 한국정보과학회 컴퓨터그래픽스연구회 2007 한국정보과학회 컴퓨터그래픽스연구회 학술대회 논문집 Vol.2007 No.10

[STUDENT FORUM]Of Drums and Men in Chŏllabuk-do Province

Nathan Hesselink The Academy of Korean Studies 1998 Korea Journal Vol.38 No.3

Chronic Cerebrospinal Venous Insufficiency in Multiple Sclerosis: A Failed Concept

Nathan Kugler,Parag J. Patel,cheong Jun Lee 대한혈관외과학회 2015 Vascular Specialist International Vol.31 No.1

In 2009 Paolo Zamboni et al. implicated that chronic cerebral venous congestion lead to the development of multiple sclerosis. In this review, we examined the role of chronic cerbrospinal venous insufficiency in multiple sclerosis and the proposed therapy entailing venous angioplasty and stenting of extracranial veins with available evidence to date.

Intravesical OnabotulinumtoxinA Injection for Overactive Orthotopic Ileal Neobladder: Feasibility and Efficacy

Nathan Hoag,Vincent Tse,Audrey Wang,Eric Chung,Johan Gani 대한배뇨장애요실금학회 2016 International Neurourology Journal Vol.20 No.1

The efficacy of intravesical onabotulinumtoxinA (BTXA) in the treatment of overactive bladder (OAB) has been well documented. The use of BTXA injection in orthotopic neobladders is yet to be studied. We present 4 cases of patients injected with intravesical BTXA for overactive orthotopic ileal neobladder. We recorded patient demographics, presenting and follow-up symptoms, urodynamic profiles, and Patient Global Impression of Improvement (PGI-I) scores. The 4 patients reported varying degrees of subjective improvements in the symptoms, including urgency, urge incontinence, and pad usage. Mean followup duration was 8.3 months (range, 5–14 months). Average PGI-I score was 3 (“a little better”) (range, 2–4). To our knowledge, the current study is the first case series examining BTXA injection for orthotopic neobladder overactivity. BTXA injection yielded varying degrees of objective and subjective improvements, without significant complications. Intravesical BTXA injection is feasible and may be considered as a potential treatment alternative for OAB in orthotopic neobladders, although further study is warranted.

Ummah or tribe Islamic practice political ethnocentrism and political attitudes in Indonesia (1)

Nathan W. Allen 서울대학교행정대학원 2017 Asian Journal of Political Science Vol.25 No.1

Existing research has uncovered a link between religious practice and political ethnocentrism. Religious individuals are relatively inclined to both support policies that benefit their own ethnic group and support political competitors seeking to represent them. These findings are broadly consistent with a large body of literature that examines the relationship between religion and ethnic prejudice. To date, empirical research has concentrated overwhelmingly on Western, Christian contexts. There is, however, reason to believe that Islamic practice may produce more universalistic beliefs and attitudes. This paper examines the relationship between religious participation and political ethnocentrism in Indonesia, this world’s largest Muslim-majority country. Using survey data collected during the lead-up to the 2009 national elections, this paper examines the relationship between religious practice and expressed preference for co-ethnic political leadership. It finds that a respondent’s self-reported level of religious activity strongly correlates with stated preference for co-ethnic leadership. These findings bolster confidence that the relationship between religious participation and ethnocentrism holds beyond Western Christian contexts. For Indonesia, deepening Islamic practice could thus predict a rise in ethnocentrism, threatening the country’s reputation for tolerance.

Effects of Partial Nephrectomy on Postoperative Blood Pressure

Nathan Lawrentschuk,Greg Trottier,Karli Mayo,Ricardo A Rendon 대한비뇨의학회 2012 Investigative and Clinical Urology Vol.53 No.3

Purpose: The effects of partial nephrectomy (PN) on postoperative blood pressure (BP) are not known, and PN has the potential to worsen BP. We therefore sought to determine whether PN alters postoperative BP. Materials and Methods: Patients who underwent PN for suspected malignancy at our institution from 2002 to 2008 were included. Data on BP and medication from before and after PN were retrieved from family physicians. BP and number of antihypertensive medications were compared after surgery with preoperative values by use of paired t tests and Chi-squared analyses, respectively. Results: Of 74 patients undergoing PN and providing consent, 48 met the inclusion and exclusion criteria, with a median follow-up of 24 months. For the early postoperative period (1 month to 1 year after surgery), the mean BPs (132.3/77.0 mmHg) were unchanged compared with preoperative values (132.4/78.0 mmHg; p=0.59 systolic BP and p=0.30 diastolic BP). For the later postoperative period (beyond 1 year after surgery), the mean postoperative systolic BP was unchanged from the mean preoperative systolic BP (131.2 mmHg vs. 132.4 mmHg, respectively; p>0.30). However, the corresponding average diastolic BP was lower in the long term (78.0 mmHg versus 76.4 mmHg respectively; p=0.01). No significant difference in the mean number of BP medications prescribed preoperatively, at one year, and beyond one year was identified (p>0.37). Conclusions: PN does not result in initial or long-term postoperative deterioration in BP. Purpose: The effects of partial nephrectomy (PN) on postoperative blood pressure (BP) are not known, and PN has the potential to worsen BP. We therefore sought to determine whether PN alters postoperative BP. Materials and Methods: Patients who underwent PN for suspected malignancy at our institution from 2002 to 2008 were included. Data on BP and medication from before and after PN were retrieved from family physicians. BP and number of antihypertensive medications were compared after surgery with preoperative values by use of paired t tests and Chi-squared analyses, respectively. Results: Of 74 patients undergoing PN and providing consent, 48 met the inclusion and exclusion criteria, with a median follow-up of 24 months. For the early postoperative period (1 month to 1 year after surgery), the mean BPs (132.3/77.0 mmHg) were unchanged compared with preoperative values (132.4/78.0 mmHg; p=0.59 systolic BP and p=0.30 diastolic BP). For the later postoperative period (beyond 1 year after surgery), the mean postoperative systolic BP was unchanged from the mean preoperative systolic BP (131.2 mmHg vs. 132.4 mmHg, respectively; p>0.30). However, the corresponding average diastolic BP was lower in the long term (78.0 mmHg versus 76.4 mmHg respectively; p=0.01). No significant difference in the mean number of BP medications prescribed preoperatively, at one year, and beyond one year was identified (p>0.37). Conclusions: PN does not result in initial or long-term postoperative deterioration in BP.

Joint Strength in High Speed Friction Stir Spot Welded DP 980 Steel

Nathan Saunders,Michael Miles,Trent Hartman,Yuri Hovanski,Sung-Tae Hong,Russell Steel 한국정밀공학회 2014 International Journal of Precision Engineering and Vol. No.

High speed friction stir spot welding was applied to 1.2 mm thick DP 980 steel sheets under different welding conditions, using PCBNtools. The range of vertical feed rates used during welding was 2.5~102 mm per minute, while the range of spindle speeds was 2500~6000 rpm. Extended testing was carried out for five different sets of welding conditions, until tool failure. These welding conditionsresulted in vertical welding loads of 3.6~8.2 kN and lap shear tension failure loads of 8.9~11.1 kN. PCBN tools were shown, in thebest case, to provide lap shear tension failure loads at or above 9 kN for 900 spot welds, after which tool failure caused a rapid dropin joint strength. Joint strength was shown to be strongly correlated to bond area, which was measured from weld cross sections. Failure modes of the tested joints were a function of bond area and softening that occurred in the heat-affected zone.

Kil kunak ch'ilch'ae (Seven-Stroke Road Military Music) Rhythmic Pattern : P'ungmul and the Bridging of the North-South Divide

Nathan Hesselink,송선형 서울대학교 동양음악연구소 2003 동양음악 Vol.25 No.-

Two Sides of a Similar Coin - A common origin hypothesis in Honam region percussion band music/ dance

Nathan Hesselink 서울대학교 동양음악연구소 1999 동양음악 Vol.21 No.-

The effects of physical decontamination methods on zirconia implant surfaces: a systematic review

Nathan Chiang Ping Tan,Ahsen Khan,Elsa Antunes,Catherine M Miller,Dileep Sharma 대한치주과학회 2021 Journal of Periodontal & Implant Science Vol.51 No.5

Purpose: Peri-implantitis therapy and implant maintenance are fundamental practices to enhance the longevity of zirconia implants. However, the use of physical decontamination methods, including hand instruments, polishing devices, ultrasonic scalers, and laser systems, might damage the implant surfaces. The aim of this systematic review was to evaluate the effects of physical decontamination methods on zirconia implant surfaces. Methods: A systematic search was conducted using 5 electronic databases: Ovid MEDLINE, PubMed, Scopus, Web of Science, and Cochrane. Hand searching of the OpenGrey database, reference lists, and 6 selected dental journals was also performed to identify relevant studies satisfying the eligibility criteria. Results: Overall, 1049 unique studies were identified, of which 11 studies were deemed suitable for final review. Air-abrasive devices with glycine powder, prophylaxis cups, and ultrasonic scalers with non-metal tips were found to cause minimal to no damage to implant-grade zirconia surfaces. However, hand instruments and ultrasonic scalers with metal tips have the potential to cause major damage to zirconia surfaces. In terms of laser systems, diode lasers appear to be the most promising, as no surface alterations were reported following their use. Conclusion: Air-abrasive devices and prophylaxis cups are safe for zirconia implant decontamination due to preservation of the implant surface integrity. In contrast, hand instruments and ultrasonic scalers with metal tips should be used with caution. Recommendations for the use of laser systems could not be fully established due to significant heterogeneity among included studies, but diode lasers may be the best-suited system. Further research—specifically, randomised controlled trials—would further confirm the effects of physical decontamination methods in a clinical setting.