REVISITING THE MICROLENSING EVENT OGLE 2012-BLG-0026: A SOLAR MASS STAR WITH TWO COLD GIANT PLANETS

Beaulieu, J.-P.,Bennett, D. P.,Batista, V.,Fukui, A.,Marquette, J.-B.,Brillant, S.,Cole, A. A.,Rogers, L. A.,Sumi, T.,Abe, F.,Bhattacharya, A.,Koshimoto, N.,Suzuki, D.,Tristram, P. J.,Han, C.,Gould, A American Astronomical Society 2016 The Astrophysical Journal Vol.824 No.2

<P>Two cold gas giant planets orbiting a G-type main-sequence star in the galactic disk were previously discovered in the high-magnification microlensing event OGLE-2012-BLG-0026. Here, we present revised host star flux measurements and a refined model for the two-planet system using additional light curve data. We performed high angular resolution adaptive optics imaging with the Keck and Subaru telescopes at two epochs while the source star was still amplified. We detected the lens flux, H = 16.39 +/- 0.08. The lens, a disk star, is brighter than predicted from the modeling in the original study. We revisited the light curve modeling using additional photometric data from the B&C telescope in New Zealand and CTIO 1.3 m H-band light curve. We then include the Keck and Subaru adaptive optic observation constraints. The system is composed of a similar to 4-9 Gyr lens star of M-lens = 1.06 +/- 0.05 M circle dot at a distance of D-lens = 4.0 +/- 0.3 kpc, orbited by two giant planets of 0.145 +/- 0.008 M-Jup and 0.86 +/- 0.06 M-Jup, with projected separations of 4.0 +/- 0.5 au and 4.8 +/- 0.7 au, respectively. Because the lens is brighter than the source star by 16 +/- 8% in H, with no other blend within one arcsec, it will be possible to estimate its metallicity using subsequent IR spectroscopy with 8-10 m class telescopes. By adding a constraint on the metallicity it will be possible to refine the age of the system.</P>

Regulatory Function of a Malleable Protein Matrix as a Novel Fermented Whey Product on Features Defining the Metabolic Syndrome

J. Beaulieu,E. Millette,E. Trottier,L.-P. Pre´court,C. Dupont,P. Lemieux 한국식품영양과학회 2010 Journal of medicinal food Vol.13 No.3

Previously, we reported that a malleable protein matrix (MPM), composed of whey fermented by a proprietary Lactobacillus kefiranofaciens strain, has immunomodulatory and anti-inflammatory properties. MPM consumption leads to a considerable reduction in the cytokine and chemokine production (tumor necrosis factor-α, interleukin-1β, and interleukin-6), thus lowering chronic inflammation or metaflammation. Inhibition of metaflammation should provide positive impact, particularly in the context of dyslipidemia, insulin resistance, and hypertension. In this study, we investigated whether short-term MPM supplementation ameliorates those features of metabolic syndrome (MetS). The ability of MPM to potentially regulate triglyceride level, cholesterol level, blood glucose level, and hypertension was evaluated in different animal models. MPM lowers triglyceride level by 37% (P<.05) in a poloxamer 407 dyslipidemia-induced rat model. It also reduces total cholesterol by 18% (P<.05) and low-density lipoprotein-cholesterol level by 32% (P<.05) and raises high-density lipoprotein-cholesterol level by 17% (P<.01) in Syrian Golden hamsters fed a high fat/high cholesterol diet for 2 weeks. MPM reestablishes the fasting glucose insulin ratio index to normal levels (P=.07) in this latter model and lowers the plasma glucose level area under the curve (−10%, P=.09) in fructose-fed rats after 2 weeks of treatment. In spontaneously hypertensive rats, MPM-treated animals showed a reduction of SBP by at least 13% (P<.05) for 4 weeks. Results from this study suggest that MPM is a functional ingredient with beneficial effects on lipid metabolism, blood glucose control, and hypertension that might contribute to the management of MetS and thus reducing the risk of cardiovascular diseases.

Binary Grassmannian Weightbooks for MIMO Beamforming Systems

Young Gil Kim,Beaulieu, Norman C IEEE 2011 IEEE TRANSACTIONS ON COMMUNICATIONS Vol.59 No.2

<P>Binary weightbooks for multiple-input multiple-output (MIMO) beamforming systems using quantized feedback are designed based on the Grassmannian beamforming criterion. It is shown that the Grassmannian criterion for binary weightbook design is to maximize the minimum Hamming distance of the corresponding block code. Thus, block codes that have large minimum Hamming distance can be used for binary weightbook design for MIMO beamforming systems using quantized feedback. The optimum binary weightbooks when the number of transmit antennas has value from two to six are tabulated.</P>

Synthesis and Properties of Deoxybenzoin-Based Fire-Safe Polymers

구본철,( Jian Wu ),( Michael Beaulieu ),( Thangamani Ranganathan ),( Richard J. Farris ),( Alan J. Lesser ),( Todd Emrick ),( E. Bryan Coughlin ) 한국공업화학회 2009 한국공업화학회 연구논문 초록집 Vol.2009 No.-

Immunomodulation by a Malleable Matrix Composed of Fermented Whey Proteins and Lactic Acid Bacteria

Pierre Lemieux,Josoe Beaulieu,Roger Dubuc,Nicolas Beaudet,Claude Dupont 한국식품영양과학회 2007 Journal of medicinal food Vol.10 No.1

Functional foods and nutraceuticals have gained in popularity over the last 10 years. Among natural healthproducts, whey proteins and fermented milk products are paramount. A malleable protein matrix (MPM), composed of wheyfermented by a lactic acid bacterium, capsular exopolysaccharides, vitamins, minerals, and peptides generated during the fer-mentation process, has the potential to be unique by combining multiple health-promoting components. Forced feeding ex-periments on healthy animals were performed to evaluate the immunomodulatory effect of MPM. Glutathione production, an-consumption was evident as seen by the increased polymorphonuclear cell counts and intracellular glutathione levels. The ab-sence of MPM-specific antibody production indicated a lack of undesirable immune recognition of MPM. The MPM, with itsimmunomodulatory properties, has the potential to be a food substitute or a functional food for maintenance of general im-mune health.

SEP Performance Using Equivalence in Nakagami- <tex> $m$</tex> Fading Channels

Kim, Young Gil,Beaulieu, Norman C.,Woo-Kyung Lee IEEE 2016 IEEE Transactions on Vehicular Technology VT Vol.65 No.5

<P>We show that an L-branch maximal ratio combining (MRC) receiver with an average signal-to-noise ratio (SNR) (gamma) over bar in Nakagami-m fading channels is equivalent to an mL-branch MRC receiver with average SNR (gamma) over barm in Rayleigh fading channels in terms of symbol error probability (SEP) when mL is an integer. Moreover, the orthogonal space-time block code (OSTBC) employing M-t transmit antennas and M-r receive antennas with the average SNR (gamma) over bar in Nakagami-m fading channels is shown to be equivalent to an mM(t)M(r)-branch MRC single-input-multiple-output (SIMO) receiver with the average SNR (gamma) over bar mM(t) in Rayleigh fading channels.</P>

S+N Energy Selection Combining for MPSK and 16-QAM Signaling in Nakagami-m and Rician Fading Channels

Young Gil Kim,Beaulieu, Norman C IEEE 2011 IEEE TRANSACTIONS ON COMMUNICATIONS Vol.59 No.2

<P>A signal-plus-noise (S+N) energy selection diversity combining (S+N-ESC) scheme for M-ary phase shift keying (MPSK) in Rayleigh fading channels is mathematically analyzed. Also, the S+N-ESC scheme for MPSK and 16-quadrature amplitude modulation (16-QAM) signaling in Nakagami-m and Rician fading channels is studied by computer simulations. The S+N-ESC selects the branch with the maximum S+N energy for detection. The advantage of the S+N-ESC scheme is that it requires no explicit channel estimation for diversity branch selection. We show that the symbol error probability (SEP) of the S+N-ESC is the same as that of classical selection combining (SC) for MPSK signaling in independent and identically distributed (i.i.d.) Rayleigh fading channels. Also, we show that the SEP of a weighted S+N-ESC scheme is the same as that of classical SC for MPSK signaling in independent and nonidentically distributed (i.n.d.) Rayleigh fading channels. It is shown by computer simulations that the S+N-ESC scheme provides a smaller SEP than classical SC for MPSK signaling in nondispersive fading channels such as Nakagami-m fading channels with Nakagami parameter m >; 1 and Rician fading channels with Rician parameter K >; 0. On the other hand, the S+N-ESC scheme is shown by computer simulations to have a larger SEP than classical SC for 16-QAM signaling in Nakagami-m and Rician fading channels.</P>

Exact Closed-Form Solutions for the BEP of Decode-and-Forward Cooperative Systems in Nakagami-m Fading Channels

Kim, Young Gil,Beaulieu, Norman C. IEEE 2011 IEEE TRANSACTIONS ON COMMUNICATIONS Vol.59 No.9

<P>The exact average bit error probability (BEP) performance of decode-and-forward (DF) cooperative systems for binary phase shift keying (BPSK) signals in Nakagami-m fading channels for integer values of m is analyzed. Two types of receivers, a λ-maximal ratio combining (λ-MRC) receiver and a piecewise linear (PL) receiver are examined. Closed-form, integral-free, expressions for the BEPs of the λ-MRC receiver and the PL receiver are obtained.</P>

Relay Advantage Criterion for Multihop Decode-and-Forward Relaying Systems

Young Gil Kim,Beaulieu, Norman C. IEEE 2014 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS Vol.13 No.4

<P>We define a symbol transition matrix (STM) as a matrix whose entries are the symbol transition probabilities of a relay in a decode-and-forward (DF) relaying system. Using the STM as a state transition matrix of a discrete-time Markov chain, the source-to-destination STM is shown to be the product of intermediate STMs in multihop DF relaying systems. We show that the probability of correct decision at the destination is the trace of the source-to-destination STM divided by the modulation order. The symbol error probabilities (SEPs) of multihop DF relaying systems with any modulation scheme in any independent and nonidentically distributed (ind) channels are derived using the STM. For multihop DF relaying systems in independent and identically distributed (iid) channels, the eigenvalues of the single link STM are used to simplify the calculation of the SEP for any modulation scheme. Also, the SEP of multihop DF relaying systems with 16-quadrature amplitude modulation (QAM) signals in ind Rayleigh fading channels is derived using the STM. A relay advantage criterion is derived for multihop DF relaying systems in iid Nakagami-m fading channels with both the total transmitted energy and the source-to-destination distance fixed. The relay advantage criterion can be used for deciding whether putting more relays between the source and the destination increases or decreases the SEP.</P>

Exact BEP of Decode-and-Forward Cooperative Systems With Multiple Relays in Rayleigh Fading Channels

Young Gil Kim,Beaulieu, Norman C. IEEE 2015 IEEE Transactions on Vehicular Technology VT Vol.64 No.2

<P>The exact average bit error probability (BEP) performance of decode-and-forward (DF) cooperative systems with multiple relays for binary phase-shift keying (BPSK) signals in Rayleigh fading channels is derived. Two types of receivers, i.e., a λ-maximal ratio combining (λ-MRC) receiver and a piecewise linear (PL) receiver, are examined. The characteristic functions (CFs) of the decision statistics are derived and used for the derivation of the BEPs. Closed-form integral-free solutions for the BEPs are obtained.</P>