http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
EXPLICIT SOLUTIONS OF INFINITE QUADRATIC PROGRAMS
Sivakumar, K.C.,Swarna, J.Mercy 한국전산응용수학회 2003 Journal of applied mathematics & informatics Vol.12 No.1
Let H be a Hilbert space, X be a real Banach space, A : H \longrightarrow X be an operator with D(A) dense in H, G: H \longrightarrow H be positive definite, $\chi$ $\in$ D(A) and b $\in$ H. Consider the quadratic programming problem: QP: Minimize $\frac{1}{2}$〈p, $\chi$〉 + 〈$\chi$, G$\chi$〉 subject to A$\chi$= b In this paper, we obtain an explicit solution to the above problem using generalized inverses.
Moore-Penrose inverse in an indefinite inner product space
K. Kamaraj,K. C. Sivakumar 한국전산응용수학회 2005 Journal of applied mathematics & informatics Vol.19 No.1-2
The concept of the Moore-Penrose inverse in an indefinite inner product space is introduced. Extensions of some of the formulae in the Euclidean space to an indefinite inner product space are studied. In particular range-hermitianness is completely characterized. Equivalence of a weighted generalized inverse and the Moore-Penrose inverse is proved. Finally, methods of computing the Moore-Penrose inverse are presented.
C. Ramesh,Mohanraj Chandran,K. Chellamuthu,A. Sivakumar 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.1
In this research article, the metal matrix composite with AA6082 was formed with mono Tin (5 wt%), Zinc (5 wt%), graphite(5 wt%) and hybrid. The solution heat treatment process and quenching with water and solidification were carried out andresults were compared with AA6082 T6. The different analysis includes mechanical properties (Tensile strength, microhardness), metallurgical properties (SEM and EDX) and tribological property (friction and wear). Micro structure of heattreated AA6082 MMC found with lower defects and fine grain size. Hardness values of heat treated AA6082+Zinc(A6) andhybrid AA6082(A8) found higher than AA6082 T6. The ultimate tensile strength of heat treated AA6082+Zinc(A6) and hybridAA6082(A8) observed higher than AA6082 T6. The wear and friction rate also reduced with heat treated AA6082+Zinc andAA6082 hybrid metal matrix composites.
MOORE-PENROSE INVERSE IN AN INDEFINITE INNER PRODUCT SPACE
KAMARAJ, K.,SIVAKUMAR, K. C. 한국전산응용수학회 2005 Journal of applied mathematics & informatics Vol.19 No.1
The concept of the Moore-Penrose inverse in an indefinite inner product space is introduced. Extensions of some of the formulae in the Euclidean space to an indefinite inner product space are studied. In particular range-hermitianness is completely characterized. Equivalence of a weighted generalized inverse and the Moore-Penrose inverse is proved. Finally, methods of computing the Moore-Penrose inverse are presented.
Gao, Hui,Li, Jinglin,Sivakumar, Dakshinamurthy,Kim, Tae-Su,Patel, Sanjay K.S.,Kalia, Vipin C.,Kim, In-Won,Zhang, Ye-Wang,Lee, Jung-Kul Elsevier 2019 INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES Vol.123 No.-
<P><B>Abstract</B></P> <P>Pyridine nucleotide cofactors play important roles in biocatalytic processes that generate value-added chemicals for the pharmaceutical and food industries. Because of the high price of these pyridine cofactors, cofactor regeneration is highly desirable. However, recycling the oxidized form of cofactors, especially NADP<SUP>+</SUP>, remains a challenge. Here, we cloned and characterized an NADH oxidase from <I>Lactobacillus reuteri</I> (LreNox) which can oxidize both NADH and NADPH. Unlike many other Noxs, LreNox showed equal catalytic efficiency towards NADH and NADPH. To the best our knowledge, LreNox has the highest activity towards NADPH as a substrate compared to other wild type Noxs. Homology modeling and substrate docking studies provided insights into the dual substrate specificity of LreNox. Gly155, Ser179, and His184 in the LreNox substrate binding pocket, which are absent in other Noxs structures, are crucial for NADPH recognition, providing more space for interactions with the additional phosphate group present in NADPH. We also explored the utility of LreNox for NADP<SUP>+</SUP> regeneration in <SMALL>L</SMALL>-sorbose production by coupling it with a sorbitol dehydrogenase. The turn over number (TTN) improved ~53-fold after using LreNox as the NADP<SUP>+</SUP> recycling enzyme. This study demonstrates that LreNox could potentially be used for the regeneration of NAD(P)<SUP>+</SUP> in commercial applications.</P>