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Jan, Sen,Wang, Yu-Huai,Chao, Shenn-Yu,Wang, Dong-Ping Korea Institute of Ocean Science Technology 2001 Ocean and Polar Research Vol.23 No.2
A fine-grid (3 km ${\times}$ 3 km), three-dimensional nowcast system of sea levels, currents, temperature, and salinity is being developed for the Taiwan Strait. The project takes a balanced approach relying equally on models and observations, will have the capacity of real-time data assimilation, and is aimed at both practical and scientific applications. To determine boundary conditions and verify model results, eight coastal tide-gauge stations were first established along both sides of the strait. Strait-wide hydrographic surveys were conducted by research vessels. Currents are being measured using bottom-mounted ADCP moorings in a meridional deep channel off southwest Taiwan and along a traverse section in the central part of the strait. In addition to a fine-resolution three-dimensional model of the Taiwan Strait, an adjoint model and a larger-domain two-dimensional model were used to better determine boundary conditions in the northern and southern boundaries of the strait. In the first stage of model development, barotropic tides were successfully simulated in a hindcast mode. The protocol product has been released to general public, including government agencies, universities and general users.
The Effect of Induced Multipoles on the Fifth-order Raman Response
Jansen, Thomas I.C.,Duppen, Koos,Snijders, Jaap G. Korean Chemical Society 2003 Bulletin of the Korean Chemical Society Vol.24 No.8
In our previous work we developed the Finite Field method in order to calculate the fifth-order Raman response. The method was applied to calculate various polarization components of the two-dimensional response of liquid $CS_2$. So far, all calculations relied on the dipole-induced dipole. Accurate time-dependent density functional theory calculations have shown that this model has big discrepancies, when molecules are close together as in the liquid. We now report results of investigations on the importance of multipole and electron overlap effects on the polarizability and the fifth-order Raman response. It is shown that these collision effects, especially the induced multipoles, are crucial in the description of the fifth-order response. The impact is found to be especially pronounced for the χ_{mmzzzz}^{(5)}$response that is solely due to interaction induced effects. The calculated response will be compared with various experimental results.
Oscillatory spin-polarized tunnelling from silicon quantum wells controlled by electric field
Jansen, Ron,Min, Byoung-Chul,Dash, Saroj P. Nature Publishing Group 2010 Nature materials Vol.9 No.2
Spin-dependent electronic transport is widely used to probe and manipulate magnetic materials and develop spin-based devices. Spin-polarized tunnelling, successful in ferromagnetic metal junctions, was recently used to inject and detect electron spins in organics and bulk GaAs or Si. Electric field control of spin precession was studied in III–V semiconductors relying on spin–orbit interaction, which makes this approach inefficient for Si, the mainstream semiconductor. Methods to control spin other than through precession are thus desired. Here we demonstrate electrostatic modification of the magnitude of spin polarization in a silicon quantum well, and detection thereof by means of tunnelling to a ferromagnet, producing prominent oscillations of tunnel magnetoresistance of up to 8%. The electric modification of the spin polarization relies on discrete states in the Si with a Zeeman spin splitting, an approach that is also applicable to organic, carbon-based and other materials with weak spin–orbit interaction.
( Jansen Marcos Cambia ),( Jin Kyoung Oh ),( Jayson Cagadas Pasaol ) 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1
Aims: Liver cancer (LC) is currently the sixth most common type of cancer with an increasing incidence in the Philippines. The study aimed to analyze time trends in LC incidence over the 10-year period. Herein, we provide model-based estimates of limited time LC cases by histological subtype from year 2003- 2012. Methods: Data for calculating LC incidence rates in 2003-2012 were obtained from the population-based Department of Health- Rizal Cancer Registry. Joinpoint regression was used to analyze trends and estimate annual percentage change (APC) with 95% confidence intervals (CI) on LC incidence by histological subtypes, time- period, sex, and calculated incidence counts, rates per 100,000 person-years. Results: LC incidence shows increasing average annual rates in the past 10 years, observed rates overall (10.94), men (15.53) and women (6.39). Among LC histological subtype in carcinoma, hepatocellular contribute highest rates, in men (15.19) and women (5.23), followed by unspecified carcinoma, in men (1.73) and women (0.78). Incidence trend declines in both sexes, and increases thereafter, in men in 2007 (APC: 16.82, 95% CI: -5.70; 44.80) and women in 2008 (APC: 19.95, 95% CI: -21.7; 83.7). The highest increase in average annual percentage change (AAPC) among LC histological subtype were observe to hepatoblastoma, in men (AAPC: 4.91, 95% CI: -8.90; 20.80) and women (AAPC: 16.33, 95% CI: -0.60; 34.50). Along with cholangiocarcinoma shows an increasing AAPC, in men (AAPC: 3.68, 95% CI: -7.90; 16.70) and women (AAPC: 0.15, 95% CI: -14.1; 16.7). Conclusions: The study revealed from 2003-2012, LC incidence trends by histological subtype were consistently increased. Among LC histological subtypes, an increase in incidence was observed in hepatocellular carcinoma for the past 10-year period. Targeted screening and treatment in hepatitis B virus (HBV) and hepatitis C virus (HCV), treatment of diabetes, and primary prevention of obesity, will be the possible solutions in reducing the increasing LC incidence.
Electrical spin injection into moderately doped silicon enabled by tailored interfaces
Jansen, R.,Min, B. C.,Dash, S. P.,Sharma, S.,Kioseoglou, G.,Hanbicki, A. T.,van ’t Erve, O. M. J.,Thompson, P. E.,Jonker, B. T. American Physical Society 2010 Physical review. B, Condensed matter and materials Vol.82 No.24