The most challenging issue of component-based software is about component composition. Current co... more The most challenging issue of component-based software is about component composition. Current component specification, in addition to the syntactic level, is very limited in dealing with semantic constraints. Even so, only static aspects of components are specified. This paper gives a formal approach to make component specification more comprehensive by including component semantic. Fundamentally, the component semantic is expressed via the powerful temporal logic CTL. There are two semantic aspects in the paper, component dynamic behavior and consistency -namely a component does not violate some property in another when composed. Based on the proposed semantic, components can be efficiently cross-checked for their consistency by an incremental verification method -OIMC, even for many future component extensions.
Contemporary Mathematics Volume 475, 2008 On the Topology of Polynomial Functions on Algebraic Su... more Contemporary Mathematics Volume 475, 2008 On the Topology of Polynomial Functions on Algebraic Surfaces in Cn Ha Huy Vui and Nguyen Tat Thang Dedicated to Professor Le Dung Trang on the occasion of his sixtieth anniversary. ABSTRACT. We consider a polynomial ...
APPC 2000 - Proceedings of the 8th Asia-Pacific Physics Conference, 2001
Recently, a melting of the charge ordered state on decreasing the temperature, i.e. reentrant beh... more Recently, a melting of the charge ordered state on decreasing the temperature, i.e. reentrant behavior, has been found in Pr0.65(Ca0.7Sr0.3)0.35MnO3 and in LaSr2Mn2O7. The following theoretical models of reentrant charge ordering in the above manganites are considered: i) the square lattice extended Hubbard model with both on-site and nearest neighbor Coulomb repulsion, ii) the extended double exchange model, where the reentrant charge ordering appears due to the dependence of the hopping on the temperature resulting from double exchange.
Analele Universitatii "Ovidius" Constanta - Seria Matematica, 2013
We introduce a family of generalized Broughton polynomials and compute the characteristic varieti... more We introduce a family of generalized Broughton polynomials and compute the characteristic varieties of complement of a curve arrangement defined by fibers of some generalized Broughton polynomials.
APPC 2000 - Proceedings of the 8th Asia-Pacific Physics Conference, 2001
We study the correlation effect in optics of semiconductor quantum dot taking into account on-sit... more We study the correlation effect in optics of semiconductor quantum dot taking into account on-site Coulomb repulsion U in both conduction and valence bands. The midgap excitonic states in the energy spectrum due to Kondo effect is discussed. It is shown that in the small U ...
A study is made of the formation of Cooper pairs in an isotropic superconducting electron liquid ... more A study is made of the formation of Cooper pairs in an isotropic superconducting electron liquid with spin-dependent effective interaction potential of the electrons. It is shown by means of Bogolyubov's selfconsistent field method that in the corresponding approximation pairing of electrons with the same helicity occurs. Two different energy gaps appear in the spectrum of quasiparticle excitations.
The present work is an extension of previous analysis for quasi-2D wells to quasi-lD wells. Analy... more The present work is an extension of previous analysis for quasi-2D wells to quasi-lD wells. Analytic expressions are determined for the scattering rate due to the deformation potential interaction, and numerical results (scattering and momentum-relaxation rates) are presented for polar optical mode scattering. We calculate the rates as a function of energy, and compare our results with the bulk solutions and with those for 2D wells. The scattering and momentum-relaxation rates for polar optical mode scattering are shown to be considerably enhanced over the bulk result, the threshold of emission being very abrupt. The latter suggests the existence of an intrinsic NDR. The possibility of a negative momentum-relaxation rate is shown to exist for low energy associated with motion parallel to the barriers.
... Original Paper. ElectronHole Exchange Interaction of Excitons in Direct Band Gap Cubic Semic... more ... Original Paper. ElectronHole Exchange Interaction of Excitons in Direct Band Gap Cubic Semiconductors with Degenerated Valence Band. Nguyen Que Huong,; Nguyen Toan Thang,; Nguyen Ai Viet. Article first published online: 19 FEB 2006. DOI: 10.1002/pssb.2221610218. ...
... eksper. teor. Fiz. 57, 247 (1969). [ZO] NGUYEN BA AN, NGUYEN VAN HIEU, NGUYEN TOANTHANG, and ... more ... eksper. teor. Fiz. 57, 247 (1969). [ZO] NGUYEN BA AN, NGUYEN VAN HIEU, NGUYEN TOANTHANG, and NGUYEN AI VIET, pu'uovo [21] CH HENRY, 5. J. HOPFIELD, and L. C. LUTHER, Phys. Rev. Letters 17, 1178 (1966). [22] G. B. WRIGHT and A. MOORADIAN, Phys. Rev. ...
The cross-sections are calculated for the Raman scattering processes with polarized light in cubi... more The cross-sections are calculated for the Raman scattering processes with polarized light in cubic semiconductors whose valence band top is fourfold degenerate F 8. The exciton effect is taken into account.
The cross-sections are calculated for the Raman scattering processes with polarized light in cubi... more The cross-sections are calculated for the Raman scattering processes with polarized light in cubic semiconductors whose valence band top is fourfold degenerate F 8. The exciton effect is taken into account.
The cross section of the interband electronic Raman scattering in the two band gap and with the a... more The cross section of the interband electronic Raman scattering in the two band gap and with the allowed dipole transition is calculated. The exciton effect was taken into account.
This paper proposes a novel technique for the new excitation control of the doubly-fed induction ... more This paper proposes a novel technique for the new excitation control of the doubly-fed induction generator (DFIG) on power-station which connected to the grid. That is using the similar signals from rotor of a small capacity doubly-fed induction machine (DFIM) as a base to generate the control signals for the former DFIG. Based on this method, a simple but effective controller is designed, which ensures to decouple the active and reactive power supplied to the grid by using two separate parameters Kp and Kq. The advantage of this method is that it is simple but still effective.
A microscopic theory is represented of the scattering of the excitonic polariton on the excitonic... more A microscopic theory is represented of the scattering of the excitonic polariton on the excitonic polariton in semiconductors with direct band gaps, All possible scattering mechanisms were taken into account. In the calculations the second quantization method was used in an effective manner. The general results were applied to the case of the single exciton level in CdS. The contributions from different scattering mechanisms were compared.
Nowadays, in the marketing area, a new concept of marketing is emerging: the emotional marketing.... more Nowadays, in the marketing area, a new concept of marketing is emerging: the emotional marketing. The emotional marketing studies how to arouse emotions in people to induce them to buy a particular product/service. Recent studies have shown how purchasing choices and decisions are the result of a careful analysis of rational and emotional aspects. Psychological literature recognizes that the emotional conditions influence every stage of decision-making in purchasing processes. Emotions play a key role in any kind of social or business decision. The emotions are manifested in verbal, facial and textual expressions. In the paper techniques of emotional measurements are outlined. These measurements are very important for business goals.
The most challenging issue of component-based software is about component composition. Current co... more The most challenging issue of component-based software is about component composition. Current component specification, in addition to the syntactic level, is very limited in dealing with semantic constraints. Even so, only static aspects of components are specified. This paper gives a formal approach to make component specification more comprehensive by including component semantic. Fundamentally, the component semantic is expressed via the powerful temporal logic CTL. There are two semantic aspects in the paper, component dynamic behavior and consistency -namely a component does not violate some property in another when composed. Based on the proposed semantic, components can be efficiently cross-checked for their consistency by an incremental verification method -OIMC, even for many future component extensions.
Contemporary Mathematics Volume 475, 2008 On the Topology of Polynomial Functions on Algebraic Su... more Contemporary Mathematics Volume 475, 2008 On the Topology of Polynomial Functions on Algebraic Surfaces in Cn Ha Huy Vui and Nguyen Tat Thang Dedicated to Professor Le Dung Trang on the occasion of his sixtieth anniversary. ABSTRACT. We consider a polynomial ...
APPC 2000 - Proceedings of the 8th Asia-Pacific Physics Conference, 2001
Recently, a melting of the charge ordered state on decreasing the temperature, i.e. reentrant beh... more Recently, a melting of the charge ordered state on decreasing the temperature, i.e. reentrant behavior, has been found in Pr0.65(Ca0.7Sr0.3)0.35MnO3 and in LaSr2Mn2O7. The following theoretical models of reentrant charge ordering in the above manganites are considered: i) the square lattice extended Hubbard model with both on-site and nearest neighbor Coulomb repulsion, ii) the extended double exchange model, where the reentrant charge ordering appears due to the dependence of the hopping on the temperature resulting from double exchange.
Analele Universitatii "Ovidius" Constanta - Seria Matematica, 2013
We introduce a family of generalized Broughton polynomials and compute the characteristic varieti... more We introduce a family of generalized Broughton polynomials and compute the characteristic varieties of complement of a curve arrangement defined by fibers of some generalized Broughton polynomials.
APPC 2000 - Proceedings of the 8th Asia-Pacific Physics Conference, 2001
We study the correlation effect in optics of semiconductor quantum dot taking into account on-sit... more We study the correlation effect in optics of semiconductor quantum dot taking into account on-site Coulomb repulsion U in both conduction and valence bands. The midgap excitonic states in the energy spectrum due to Kondo effect is discussed. It is shown that in the small U ...
A study is made of the formation of Cooper pairs in an isotropic superconducting electron liquid ... more A study is made of the formation of Cooper pairs in an isotropic superconducting electron liquid with spin-dependent effective interaction potential of the electrons. It is shown by means of Bogolyubov's selfconsistent field method that in the corresponding approximation pairing of electrons with the same helicity occurs. Two different energy gaps appear in the spectrum of quasiparticle excitations.
The present work is an extension of previous analysis for quasi-2D wells to quasi-lD wells. Analy... more The present work is an extension of previous analysis for quasi-2D wells to quasi-lD wells. Analytic expressions are determined for the scattering rate due to the deformation potential interaction, and numerical results (scattering and momentum-relaxation rates) are presented for polar optical mode scattering. We calculate the rates as a function of energy, and compare our results with the bulk solutions and with those for 2D wells. The scattering and momentum-relaxation rates for polar optical mode scattering are shown to be considerably enhanced over the bulk result, the threshold of emission being very abrupt. The latter suggests the existence of an intrinsic NDR. The possibility of a negative momentum-relaxation rate is shown to exist for low energy associated with motion parallel to the barriers.
... Original Paper. ElectronHole Exchange Interaction of Excitons in Direct Band Gap Cubic Semic... more ... Original Paper. ElectronHole Exchange Interaction of Excitons in Direct Band Gap Cubic Semiconductors with Degenerated Valence Band. Nguyen Que Huong,; Nguyen Toan Thang,; Nguyen Ai Viet. Article first published online: 19 FEB 2006. DOI: 10.1002/pssb.2221610218. ...
... eksper. teor. Fiz. 57, 247 (1969). [ZO] NGUYEN BA AN, NGUYEN VAN HIEU, NGUYEN TOANTHANG, and ... more ... eksper. teor. Fiz. 57, 247 (1969). [ZO] NGUYEN BA AN, NGUYEN VAN HIEU, NGUYEN TOANTHANG, and NGUYEN AI VIET, pu'uovo [21] CH HENRY, 5. J. HOPFIELD, and L. C. LUTHER, Phys. Rev. Letters 17, 1178 (1966). [22] G. B. WRIGHT and A. MOORADIAN, Phys. Rev. ...
The cross-sections are calculated for the Raman scattering processes with polarized light in cubi... more The cross-sections are calculated for the Raman scattering processes with polarized light in cubic semiconductors whose valence band top is fourfold degenerate F 8. The exciton effect is taken into account.
The cross-sections are calculated for the Raman scattering processes with polarized light in cubi... more The cross-sections are calculated for the Raman scattering processes with polarized light in cubic semiconductors whose valence band top is fourfold degenerate F 8. The exciton effect is taken into account.
The cross section of the interband electronic Raman scattering in the two band gap and with the a... more The cross section of the interband electronic Raman scattering in the two band gap and with the allowed dipole transition is calculated. The exciton effect was taken into account.
This paper proposes a novel technique for the new excitation control of the doubly-fed induction ... more This paper proposes a novel technique for the new excitation control of the doubly-fed induction generator (DFIG) on power-station which connected to the grid. That is using the similar signals from rotor of a small capacity doubly-fed induction machine (DFIM) as a base to generate the control signals for the former DFIG. Based on this method, a simple but effective controller is designed, which ensures to decouple the active and reactive power supplied to the grid by using two separate parameters Kp and Kq. The advantage of this method is that it is simple but still effective.
A microscopic theory is represented of the scattering of the excitonic polariton on the excitonic... more A microscopic theory is represented of the scattering of the excitonic polariton on the excitonic polariton in semiconductors with direct band gaps, All possible scattering mechanisms were taken into account. In the calculations the second quantization method was used in an effective manner. The general results were applied to the case of the single exciton level in CdS. The contributions from different scattering mechanisms were compared.
Nowadays, in the marketing area, a new concept of marketing is emerging: the emotional marketing.... more Nowadays, in the marketing area, a new concept of marketing is emerging: the emotional marketing. The emotional marketing studies how to arouse emotions in people to induce them to buy a particular product/service. Recent studies have shown how purchasing choices and decisions are the result of a careful analysis of rational and emotional aspects. Psychological literature recognizes that the emotional conditions influence every stage of decision-making in purchasing processes. Emotions play a key role in any kind of social or business decision. The emotions are manifested in verbal, facial and textual expressions. In the paper techniques of emotional measurements are outlined. These measurements are very important for business goals.
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