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- 저자 : Arvin (검색결과 52 건)
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Avoiding Hybrid Clauses Pitfalls: An Applied Framework
Arvin Lee,Maggie Ma 한국중재학회 2015 중재연구 Vol.25 No.3
This paper sets out a multi-dimensional approach that parties drafting a “hybrid clause” for their arbitration agreement can adopt, for purposes of maximizing enforceability, taking into account the multi-jurisdictional interplay between the seat Court, the governing law and the enforcement Court(s), as well as mandatory rules that can be present in the lex arbitrii, the governing law, and/or the law of the enforcement for a. This paper draws on both the co-authors’ practice experience, as well as first principles of party autonomy in light of mandatory rules, based predominantly on the scholarship of Briggs and Nygh.
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Arvin R. Wali,Sarath Pathuri,Michael G. Brandel,Ryan W. Sindewald,Brian R.Hirshman,Javier A. Bravo,Jeffrey A. Steinberg,Scott E. Olson,Jeffrey S. Pannell,Alexander Khalessi,David Santiago-Dieppa 대한뇌혈관외과학회 2024 Journal of Cerebrovascular and Endovascular Neuros Vol.26 No.1
Objective: Diagnostic cerebral angiograms (DCAs) are widely used in neurosurgery due to their high sensitivity and specificity to diagnose and characterize pathology using ionizing radiation. Eliminating unnecessary radiation is critical to reduce risk to patients, providers, and health care staff. We investigated if reducing pulse and frame rates during routine DCAs would decrease radiation burden without compromising image quality.Methods: We performed a retrospective review of prospectively acquired data after implementing a quality improvement protocol in which pulse rate and frame rate were reduced from 15 p/s to 7.5 p/s and 7.5 f/s to 4.0 f/s respectively. Radiation doses and exposures were calculated. Two endovascular neurosurgeons reviewed randomly selected angiograms of both doses and blindly assessed their quality.Results: A total of 40 consecutive angiograms were retrospectively analyzed, 20 prior to the protocol change and 20 after. After the intervention, radiation dose, radiation per run, total exposure, and exposure per run were all significantly decreased even after adjustment for BMI (all p<0.05). On multivariable analysis, we identified a 46% decrease in total radiation dose and 39% decrease in exposure without compromising image quality or procedure time.Conclusions: We demonstrated that for routine DCAs, pulse rate of 7.5 with a frame rate of 4.0 is sufficient to obtain diagnostic information without compromising image quality or elongating procedure time. In the interest of patient, provider, and health care staff safety, we strongly encourage all interventionalists to be cognizant of radiation usage to avoid unnecessary radiation exposure and consequential health risks.
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Assessing the Impact of State Trading Enterprises
Arvin Pirness,M. ROSE OLFERT,MARK D. PARTRIDGE,WILLIAM HARTLEY FURTAN 한국국제경제학회 2012 International Economic Journal Vol.26 No.4
State Trading Enterprises (STEs) are periodically subject to intense scrutiny for their suspected negative impact on the international trade of agricultural goods. Sound empirical assessment of the impact of STEs is scant, in spite of the ongoing and intense debate over their impacts, especially in the context of reform at the WTO. In this paper we use the case of world wheat trade between 2212 country pairs over a 35 year span to assess STE impacts. Using a gravity model, we estimate a Poisson pseudo maximum likelihood fixed effects model of world wheat trade to assess the role of both the presence of STEs and STEs with monopoly power. Further addressing estimation challenges, we also estimate zero-inflated versions of Poisson and Negative Binomial Regression models. We find consistent support for the hypothesis that monopoly export STEs are associated with higher exports for their host country. Similarly, import STEs appear to inhibit wheat imports, suggesting a protectionist function.
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Arvin D. Eballo 한국종교사회학회 2016 종교와사회 Vol.4 No.2
Before the advent of some renewal movements in the Philippines like Parish Renewal Experience, Marriage Encounter and El Shaddai, the Cursillo Movement has already attracted marginal Filipino Catholics known as ‘masses’. However, researches pertinent to Cursillo in the Philippines are insufficient. Hence, a research article focused on this topic is imperative on the part of the Filipino theologians, religious educators and sociologists. On that note, the proponent will trace the origin and expansion of the Movement from Spain to the Philippines. The impact of the Movement to the evangelizing mission of the Church as a form of catechesis in general, its influences to the members in particular and its ecclesiology of Vertebration are included in this undertaking. The last part of the article deals with how the Movement has responded to the challenges of the Philippine context.
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Arvin R. Wali,Alexander Himstead,Javier Bravo,Michael G Brandel,Brian R. Hirshman,J. Scott Pannell,Andrew D. Nguyen,David R. Santiago-Dieppa 대한뇌혈관외과학회 2023 Journal of Cerebrovascular and Endovascular Neuros Vol.25 No.2
Embolization of the middle meningeal artery (MMA) is a safe and effective adjunct in the treatment of chronic subdural hematoma. While prior authors describe the use of coils to assist embolization by preventing reflux through eloquent collaterals, we de- scribe the use of coils to further open the MMA, allowing the administration of greater amounts of embolisate for a more robust embolization. The objective of this study was to demonstrate that helical coils can safely open the MMA following the administration of polyvinyl alcohol (PVA) particles. This allows for more embolisate to be administered into the MMA for more effective treatment. A retrospective review was conducted at our institution including intraoperative images and postoperative clinical and radiographic follow up. Failure rates using MMA embolization with PVA and helical coil augmentation were compared to failure rates in the literature of MMA embolization with PVA or ethylene vinyl-alcohol copolymer alone. A total of 8 cases were reviewed in which this technique was implemented. There were no immediate complications after treatment. All patients that underwent helical coil embolization following the administration of PVA had increased amount of embolisate delivered into the MMA. All patients at follow up had resolution of the subdural hematoma on outpatient imaging. Helical coil embolization allows for more embolisate administration into the MMA and provides a technical advantage for patients that fail traditional techniques of embolization. Case series are taking place to further test this hypothesis and identify the ideal patient population that may gain maximal yield from this novel technique.
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Kristian Arvin Ada,Edward Joshua Pialago,Xiru Zheng,Daehae Kim,Chan Woo Park 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
The effects on boiling performance of heating tubes coated with Carbon Nanotubes (CNT) composites were studied. The method used in this experiment is sintering. And two test set-ups are employed. The first set-up is to test for boiling heat transfer in which optimum Cu/CNT composition will be used for the next set-up on shell and tube heat exchanger to minimize cost and time of testing and to test whether it can surpass commercially used heating tubes. During the first test different composition of Cu/CNT is tested. CNT used is based on vol. % in the following composition, 5, 10, 20 and 30 vol. % CNT. In this experiment, it was observed that the optimum composition is at 20 vol. % CNT to achieve good result because when increasing to 30 vol. % CNT the heat transfer begins to go down. This is due to the powder size getting smaller and during sintering it will coagulate resulting in cracks and the diminishing of the heat transfer performance. The increase of vol. % CNT in the composition results in the reduction of size of the powder composite. In the second test set-up for heating tubes different tubes are used including plain copper tube as base result, conventional, commercial and coated tubes with ridge and no ridge inside tube surface. It was found out that the coated tube with ridge inside is higher compared to that of commercially available tubes. This can be due to the surface modification that alters the flow inside the tube. The raw materials for surface coatings were fabricated my mechanical alloying through use of attrition ball mill. Then after fabrication it’s being coated on tubes by use of electrostatic spraying and then sintering. The refrigerant used in this process is R134a. It is known that CNT has a remarkably high thermal conductivity so it is expected that using CNT as a coating material will show an enhancement on boiling performance. The effects of CNT composition and having an inside surface ridge for sintering is being investigated and thus a conclusion has been made. Too much CNT affects the heat transfer performance of the surface and having surface modifications that alters the flow inside the tube greatly enhances overall heat transfer coefficient even up to 60%. Scanning Electron Microscopy is being done to investigate the surface morphology, characteristics and microstructure in relation to boiling performance of the heating tubes.
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Kristian Arvin Ada,Edward Joshua Pialago,Xiru Zheng,Chan Woo Park 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
The heat transfer performance effects of Fe/CNT composite coating of the inside pipe surface of a carbon steel tube was investigated. The effects were compared with pure carbon steel to identify whether an enhancement occurred or not. The powder composite used in this experiment was created through ball milling at 900 rpm in 4 hours using an attrition ball mill. After creating the powder it is sprayed on the inside pipe surface of a carbon steel tube through electrostatic spraying then sintered at 600 ℃ for 8 hrs. The CNT used in this work is a multi-walled carbon nanotube. The CNT and Fe powder are used as received and did not undergo any chemical processes. The composite coating consists of iron as the base powder and different volume percent of CNT’s namely 5, 10, 15, 20 and 30 vol. % respectively. Another type of tube used also is the plain carbon steel as a standard reference and basis for analysis and interpretation of the results. The heat transfer performance was obtained and compared with each other. Based on the result the CNT composite coating having a 20 vol. % CNT gives the highest heat transfer performance. Too much CNT or a composition of 30 vol. % in the composite affects the heat transfer performance of the pipe making it less effective due to the powder being too small and the coagulation of the powders during powder making and sintering process. Surface characterization is done by FESEM imaging and EDX to identify whether a presence of CNT is observed in the composite coating. The pore size density is also analyzed through the use of pore size analyzer. Raman spectroscopy is used to identify structure change of the coating materials. The surface roughness was acquired by the use of Mitutoyo Surftest SJ-400 which immediately gives a direct average of the surface roughness being measured.
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