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FOREIGN BORROWING AS DUTCH DISEASE : A QUANTITATIVE ANALYSIS FOR THE PHILIPPINES
BAUTISTA, ROMEO M. 한국국제경제학회 1988 International Economic Journal Vol.2 No.3
This paper investigates the economy-wide effects of increased foreign borrowing in the empirical context of the Philippines, using a multi-sectoral, general equilibrium model. The focus of the analysis is on the comparative static repercussions of the domestic spending of externally borrowed funds and on the resource allocation effects of the appreciation of the Philippine peso induced by the expanded supply of foreign exchange. The results of model simulation indicate, among other findings, a relatively small impact on national income, with rural income increasing by much less than urban income.
Bautista, Zhierwinjay,Diaz, Mark Angelo,Shin, Hyung-Seop,Lee, Jae-Hun The Korean Society of Superconductivity and Cryoge 2018 한국초전도저온공학회논문지 Vol.20 No.4
In this study, the electromechanical properties in Sn-Cu double layer stabilized GdBCO coated conductor (CC) tapes with and without external lamination under uniaxial tension were examined at 77 K and self-field. Their irreversible stress and strain limits were determined using a loading-unloading scheme based on different critical current ($I_c$) recovery criteria. The repeated tests were performed and statistical estimation was done to check the reproducibility depending on the criterion adopted in evaluating the electromechanical properties. From the results, it showed that the Sn-Cu double-layer stabilized CC tapes have the higher irreversible stress limit, but lower irreversible strain limit as compared to brass laminated ones. Through the repeated tests, it can be found that a small scattering of irreversible limits existed in both CC tape samples. Finally, similar strain sensitivity of $I_c$ in both CC tapes was obtained.
Bautista, Zhierwinjay M.,Shin, Hyung-Seop,Lee, Jae-Hun,Lee, Hunju,Moon, Seung-Hyun The Korea Institute of Applied Superconductivity a 2016 한국초전도저온공학회논문지 Vol.18 No.3
The enhancement of mechanical properties of coated conductor (CC) tapes in practical application are usually achieved by reinforcing through lamination or electroplating metal layers on either sides of the CC tape. Mechanical or electromechanical properties of the CC tapes have been largely affected by the lamination structure under various loading modes such as tension, bending or even cyclic. In this study, the influence of brass laminate volume fraction on electromechanical properties of RCE-DR processed Gadolinium-barium-copper-oxide (GdBCO) CC tapes was investigated. The samples used were composed of single-side and both-side laminate of brass layer to the Cu-stabilized CC tape and their $I_c$ behaviors were compared to those of the Cu-stabilized CC tape without external lamination. The stress/strain dependences of $I_c$ in laminated CC tapes under uniaxial tension were analyzed and the irreversible stress/strain limits were determined. As a result, the increase of brass laminate volume fraction initially increased the irreversible strain limit and became gradual. The corresponding irreversible stress limit, however, showed no difference even though the brass laminate volume fraction increased to 3.4. But the irreversible load limit linearly increased with the brass laminate volume fraction.
Bautista, Zhierwinjay Mezona,Shin, Hyung-Seop Institute of Electrical and Electronics Engineers 2019 IEEE transactions on applied superconductivity Vol.29 No.5
<P>Delamination frequently occurs as a result of high transverse tensile stresses caused by fabrication and mechanical and thermal cycles during operation. It is generally known that transverse opening and peeling off are the primary delamination failure modes, and delamination strength is typically evaluated using anvil or peel tests. To avoid transverse openings that cause delamination failures in coated conductor (CC) tapes, the tape structure can be changed by developing or adding the fabrication process. Thus, in most studies, delamination strength has been characterized in REBCO CC tapes with Cu-edges and the slit-side one. In this study, the delamination strengths of 12-mm-wide CC tapes without a slit edge and a 4-mm-wide CC tapes without Cu-edges were experimentally measured under transverse tensile loading at 77 K. Results were compared to those obtained during the mechanical delamination of CC tapes with Cu edges. The delamination morphologies were also observed macroscopically.</P>
Bautista, Marita C.,Jiang, Sheng-Fang,Armstrong, Mary Anne,Postlethwaite, Debbie,Li, Dan The Korean Gastric Cancer Association 2014 Journal of gastric cancer Vol.14 No.4
Purpose: Gastric cancer often occurs in the elderly but is uncommon in young individuals. Whether young patients have different clinical behaviors and outcomes from those of older patients remain unclear. Materials and Methods: We identified 1,366 cases of newly diagnosed noncardia gastric adenocarcinoma from the Kaiser Permanente Northern California Cancer Registry between 2000 and 2010. We then compared the clinicopathological features and survival among the different age groups. Results: The male : female ratio differed significantly between the younger and older patient groups (0.84 in age <50 years vs. 1.52>60 years, P<0.01). More younger patients were Hispanic (54% patients <40 years vs. 19% patients ${\geq}70$ years, P<0.0001), while more older patients were Caucasian (49% patients ${\geq}70$ years vs. 15% patients <40 years; P<0.0001). The diffuse/mixed histological type was more prevalent in younger patients (70% patients <40 years vs. 27% patients ${\geq}70$ years; P<0.0001), whereas the intestinal type was more frequent in older patients (71% in patients ${\geq}70$ years vs. 30% in patients <40 years; P<0.0001). Poorly differentiated adenocarcinoma was more common in the younger patients (80% in patients <40 years vs. 60% in patients ${\geq}70$ years; P=0.016). Survival rates at 1, 2, and 5 years gradually declined with increasing age (overall P=0.0002). Conclusions: Young patients with gastric cancer had more aggressive disease but higher overall survival rates than older patients. Younger Hispanic patients and older Caucasian patients were more likely to be diagnosed with gastric cancer. These differences may be due to biological predisposition and/or environmental exposure.
Bautista, Zhierwinjay,Diaz, Mark Angelo,Shin, Hyung-Seop,Lee, Jae-Hun,Oguro, Hidetoshi,Awaji, Satoshi Institute of Electrical and Electronics Engineers 2018 IEEE transactions on applied superconductivity Vol.28 No.3
<P>Transport properties of coated conductor tapes can be affected by stress and strain induced during fabrication, cool-down, and operation. Therefore, it is important to understand the strain/stress dependence of the critical current of the coated conductor tapes in the reversible region under magnetic field considering practical applications such as magnets and coils. In this paper, the strain characteristics of critical current, <I>I</I><SUB>c </SUB>, in high temperature superconducting (HTS)-coated conductor tapes fabricated using reactive co-evaporation by deposition and reaction reinforced with brass-foil laminate were investigated under external magnetic field at various cryogenic temperatures while applying uniaxial tension. Results show that <I>I</I><SUB>c</SUB> dependences on magnetic field and temperature were similar between brass-laminated coated conductor and Cu-stabilized tape. The irreversible strain limit and the irreversible stress limit of brass-laminated coated conductor tape increased as temperature decreased from 77 to 20 K. This behavior resulted from thermal hardening of the coated conductor tape at low temperature.</P>
Bautista, Zhierwinjay,Shin, Hyung-Seop,Mean, Byoung Jean,Lee, Jae-Hun The Korea Institute of Applied Superconductivity a 2016 한국초전도저온공학회논문지 Vol.18 No.4
The mechanical properties of REBCO coated conductor (CC) wires under uniaxial tension are largely determined by the thick component layers in the architecture, namely, the substrate and the stabilizer or even the reinforcement layer. Depending on device applications of the CC tapes, it is necessary to reinforce thin metallic foils externally to one-side or both sides of the CC tapes. Due to the external reinforcement of brass foils, it was found that this could increase the reversible strain limit from the Cu-stabilized CC tapes. In this study, the effects of differently hardened brass foil laminate on the electromechanical property of CC tapes were investigated under uniaxial tension loading. The tensile strain dependence of the critical current ($I_c$) was measured at 77 K and self-field. Depending on whether the $I_c$ of CC tapes were measured during loading or after unloading, a reversible strain (or stress) limit could be determined, respectively. The both-sides of the Cu-stabilized CC tapes were laminated with brass foils with different hardness, namely 1/4H, 1H and EH. From the obtained results, it showed that the yield strength of the brass laminated CC tapes with EH brass foil laminate was comparable to the one of the Cu-stabilized CC tape due to its large yield strength even though its large volume fraction. It was found that the brass foil with different hardness was mainly sensitive on the stress dependence of $I_c$, but not on the strain sensitivity due to the residual strain induced in the laminated CC tapes during unloading.