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Tran Loc Hung,Tran Thien Thanh,Bui Quang Vu 대한수학회 2008 대한수학회보 Vol.45 No.3
The main aim of this paper is to present some results related to asymptotic behavior of distribution functions of random variables of chi-square type [수식] with degrees of freedom N, where N is a positive integer-valued random variable independent on all standard normally distributed random variables Xi. Two ways for computing the distribution functions of chi-square type random variables with random degrees of freedom are considered. Moreover, some tables concerning considered distribution functions are demonstrated in Appendix The main aim of this paper is to present some results related to asymptotic behavior of distribution functions of random variables of chi-square type [수식] with degrees of freedom N, where N is a positive integer-valued random variable independent on all standard normally distributed random variables Xi. Two ways for computing the distribution functions of chi-square type random variables with random degrees of freedom are considered. Moreover, some tables concerning considered distribution functions are demonstrated in Appendix
Hybrid planar Hall-magnetoresistance sensor based on tilted cross-junction
Hung, Tran Quang,Jeong, Jong-Ryul,Kim, Dong-Young,Duc, Nguyen Huu,Kim, CheolGi Institute of Physics [etc.] 2009 Journal of Physics. D, Applied Physics Vol.42 No.5
<P>We report a new kind of high sensitivity magnetic sensor based on a tilted cross-junction which combines both the planar Hall effect (PHE) and magnetoresistance (MR) to enhance the sensitivity and linearity of the sensor. The sensitivity of this hybrid sensor is enhanced by about 30% when the cross-junction is tilted at an angle of 45° compared with a normal cross sensor junction. In this case, a sensitivity of 9.5 µV Oe<SUP>−1</SUP> is reached. Systematic investigations on the role of PHE and MR revealed that the transverse PHE component is always constant with tilt angle variations and it dominates the linearity of the hybrid sensor whereas the longitudinal MR component was the reason for improving the sensor sensitivity. The obtained results of the tilted cross-junction were described successfully using the first order approximation of the Stoner–Wohlfarth energy term.</P>
Room Temperature Magnetic Detection of Spin Switching in Nanosized Spin‐Crossover Materials
Hung, Tran Quang,Terki, Ferial,Kamara, Souleymane,Dehbaoui, Mourad,Charar, Salam,Sinha, Brajalal,Kim, CheolGi,Gandit, Philippe,Gural'skiy, Il'ya A.,Molnar, Gabor,Salmon, Lionel,Shepherd, Helena J.,Bou WILEY‐VCH Verlag 2013 Angewandte Chemie Vol.125 No.4
<P><B>Ein Prototyp</B> eines SQUID‐artigen magnetometrischen Messgeräts, das Schaltvorgänge in Spin‐Crossover‐Nanopartikeln bei Raumtemperatur indirekt detektiert, wurde entwickelt und an Nanopartikeln aus [Fe(hptrz)<SUB>3</SUB>](OTs)<SUB>2</SUB> getestet (hptrz=4‐Heptyl‐1,2,4‐triazol, OTs=<I>p</I>‐Toluolsulfonyl). Der mikromagnetometrische Ansatz hat klare Vorteile gegenüber herkömmlichen SQUID‐ und Nano‐SQUID‐Techniken.</P>
Hung, Tran Loc,Thanh, Tran Thien,Vu, Bui Quang Korean Mathematical Society 2008 대한수학회보 Vol.45 No.3
The main aim of this paper is to present some results related to asymptotic behavior of distribution functions of random variables of chi-square type $X^2_N={\Sigma}^N_{i=1}\;X^2_i$ with degrees of freedom N, where N is a positive integer-valued random variable independent on all standard normally distributed random variables $X_i$. Two ways for computing the distribution functions of chi-square type random variables with random degrees of freedom are considered. Moreover, some tables concerning considered distribution functions are demonstrated in Appendix.