MULTI-OBJECTIVE POWER SYSTEM SCHEDULING USING EVOLUTIONARY ALGORITHMS

Ph.DDOCTOR OF PHILOSOPH

Filling an empty lattice by local injection of quantum particles

We study the quantum dynamics of filling an empty lattice of size $L$, by connecting it locally with an equilibrium thermal bath that injects non-interacting bosons or fermions. We adopt four different approaches, namely (i) direct exact numerics, (ii) Redfield equation, (iii) Lindblad equation, and (iv) quantum Langevin equation -- which are unique in their ways for solving the time dynamics and the steady-state. Our setup offers a simplistic platform to understand fundamental aspects of dynamics and approach to thermalization. The quantities of interest that we consider are the spatial density profile and the total number of bosons/fermions in the lattice. The spatial spread is ballistic in nature and the local occupation eventually settles down owing to equilibration. The ballistic spread of local density admits a universal scaling form. We show that this universality is only seen when the condition of detailed balance is satisfied by the baths. The difference between bosons and fermions shows up in the early time growth rate and the saturation values of the profile. The techniques developed here are applicable to systems in arbitrary dimensions and for arbitrary geometries.Comment: 18 pages, 10 figure

Pion-Xi correlations in Au-Au collisions at STAR

We present pion-Xi correlation analysis in Au-Au collisions at sqrt(s_NN)= 200 GeV and sqrt(s_NN) = 62.4 GeV, performed using the STAR detector at RHIC. A Xi*(1530) resonance signal is observed for the first time in Au-Au collisions. Experimental data are compared with theoretical predictions. The strength of the Xi* peak is reproduced in the correlation function assuming that pions and Xis emerge from a system in collective expansion.Comment: To appear in the proceedings of 18th Nuclear Physics Division Conference of the EPS (NPDC18),Prague, 23.8.-29.8. 200

Inclusive pi0 spectra at high transverse momentum in d-Au collisions at RHIC

Preliminary results on inclusive neutral pion production in d-Au collisions at sqrt(s_NN) = 200 GeV in the pseudo-rapidity range 0<eta<1 are presented. The measurement is performed using the STAR Barrel Electromagnetic calorimeter (BEMC). In this paper, the analysis of the first BEMC hadron measurement is described and the results are compared with earlier RHIC findings. The pi0 invariant differential cross sections show good agreement with next-to-leading order (NLO) perturbative QCD calculations.Comment: 4 pages, 5 figures, 18th Nuclear Physics Division Conference of the EPS, Prague, submitted to Nucl. Phys.

Distribution Locational Marginal Pricing Based Equilibrium Optimization Strategy for Data Center Park with Spatial-Temporal Demand-Side Resources

This paper proposes a distribution locational marginal pricing (DLMP) based bi-level Stackelberg game framework between the internet service company (ISC) and distribution system operator (DSO) in the data center park. To minimize electricity costs, the ISC at the upper level dispatches the interactive workloads (IWs) across different data center buildings spatially and schedules the battery energy storage system temporally in response to DLMP. Photovoltaic generation and static var generation provide extra active and reactive power. At the lower level, DSO calculates the DLMP by minimizing the total electricity cost under the two-part tariff policy and ensures that the distribution network is uncongested and bus voltage is within the limit. The equilibrium solution is obtained by converting the bi-level optimization into a single-level mixed-integer second-order cone programming optimization using the strong duality theorem and the binary expansion method. Case studies verify that the proposed method benefits both the DSO and ISC while preserving the privacy of the ISC. By taking into account the uncertainties in IWs and photovoltaic generation, the flexibility of distribution networks is enhanced, which further facilitates the accommodation of more demand-side resources

Pregnancy outcome of women with gestational diabetes in a tertiary level hospital of North India

Background: Women with gestational diabetes mellitus (GDM) pose an important public health problem because diabetes not only affects the maternal and fetal outcome, but these women and their fetuses are also at an increased risk of developing diabetes and related complications later in their life. Objectives: The study was conducted to determine the maternal and fetal outcomes of 50 diabetic vs 50 normoglycemic pregnancies. Materials and Methods: This was a retrospective analytical record-based study conducted in a tertiary level hospital. Detailed information regarding maternal, fetal, and labor outcome parameters was recorded in a prestructured proforma and compared in normoglycemic and diabetic pregnancies. Results: Patients with obesity, history of diabetes in the family, spontaneous abortions, and gestational diabetes in previous pregnancies had a greater incidence of GDM in current pregnancy (P<0.05 for all). Hypertension, polyhydramnios, macrosomia, fetopelvic disproportion, and cesarean sections were more (P<0.001) among diabetic pregnancies. Congenital anomalies, polycythemia, hypocalcemia, and hyperbilirubinemia were also observed to be more (P<0.05) in neonates born to diabetics, suggesting an adverse effect of hyperglycemia in utero. Conclusion: Diabetes during pregnancy is associated with higher maternal and fetal morbidity. Therefore, early screening, detection, close monitoring, and intervention is essential to reduce maternal and fetal short- and long-term adverse effects, especially in high-risk groups. Pregnancy provides an opportunity to the clinician to control the disease process and inculcate healthy lifestyle practices in these patients

Synthetic, spectral and structural studies of some homo and hetero binuclear arene ruthenium (II) polypyridyl complexes

Homo-hetero binuclear cationic complexes with the formulation [(η⁶-arene)RuCl(μ-dpp)(L)]⁺ (η⁶-arene=benzene; L=PdCl₂ (1a); PtCl₂ (1b), and η⁶-arene=p-cymene; L=PdCl₂ (2a); PtCl₂ (2b)), [(η⁶-arene)RuCl(μ-dpp)(L)]²⁺(η⁶-arene=p-cymene; L=[(η⁶-C₆H₆)RuCl] (2c), and [(η⁶-C₁₀H₁₄)RuCl] (2d)) were prepared. Molecular structure of the representative homo binuclear complex [{(η⁶-C₁₀H₁₄)RuCl}(μ-dpp){(η⁶-C₁₀H₁₄)RuCl}](PF₆)₂ (2d) was determined crystallographically. Weak interaction studies on the complex 2d revealed stabilisation of the crystal packing by weak inter and intra molecular C–H⋯X (X=F, Cl, π) and π–π interactions. The C–H⋯F interactions lead to parallel helical chains and encapsulation of counter anion in self-assembled cavity arising from C–H⋯π and π–π weak interactions