P-resonant control for the neutral point of three phase inverter

In this project, a Proportional resonant (PR) current controller is proposed to maintain a balanced neutral point for a three-phase four wire inverter, which can be used in microgrid applications. The neutral-point circuit consists of a conventional neutral leg and a split DC link. The neutral point is balanced with respect to the two DC source terminals (as required, in neutral-point clamped three-level converters) even when the neutral current is large so that the inverter can be connected to an unbalanced load. The controller, designed by using the Proportional resonant control techniques, which attain eliminate for the current flowing through the split capacitors. This leads to very small variation of the neutral point from the mid-point of the DC source, in spite of the possibly large neutral current. The simulation of inverter circuit, neutral-point and P-resonant has been performed using MATLAB/SIMULINK software. The simulation results confirm the validity of the proposed method, which can be seen as a promising that ensure P-resonant control suitable for microgrid applications

Structure coefficients of the Hecke algebra of (S2n,Bn)(S_{2n},B_n)

The Hecke algebra of the pair $(S_{2n},B_n)$, where $B_n$ is the hyperoctahedral subgroup of $S_{2n}$, was introduced by James in 1961. It is a natural analogue of the center of the symmetric group algebra. In this paper, we give a polynomiality property of its structure coefficients. Our main tool is a combinatorial universal algebra which projects on the Hecke algebra of $(S_{2n},B_n)$ for every $n$. To build it, we introduce new objects called partial bijections.Comment: 32 pages, 15 figure

New results on collectivity with ALICE

An overview of recent ALICE results aimed to understand collective phenomena in Pb-Pb collisions at the LHC is presented. These include the centrality dependence of the transverse momentum ($p_{\rm T}$) distributions of charged pions, kaons, and protons as well as results on anisotropic flow using data from Pb-Pb collisions at $\sqrt{s_{{\mathrm{NN}}}} = 5.02$ TeV. In addition, comparisons between data and model predictions are presented.Comment: Proceedings for a parallel session talk at the Fifth Annual Large Hadron Collider Physics Conference, 15-20 May 2017. 6 pages, 7 figure

On the discretization of backward doubly stochastic differential equations

In this paper, we are dealing with the approximation of the process (Y,Z) solution to the backward doubly stochastic differential equation with the forward process X . After proving the L2-regularity of Z, we use the Euler scheme to discretize X and the Zhang approach in order to give a discretization scheme of the process (Y,Z)

Pembangunan dan penilaian bahan pembelajaran berbantukan komputer (PBK) berasaskan CD interaktif bagi mata pelajaran pemasaran 1 di politeknik

Kajian ini adaiah bertujuan untuk membangun dan menilai bahan Pembelajaran Berbantukan Komputer (PBK) berasaskan CD Interaktif bagi mata pelajaran Pemasaran 1 yang dihasiikan oleh pengkaji. Peniiaian yang dibuat ialah dari segi penerimaan peiajar terhadap produk yang dibangunkan, peniiaian isi kandungan dan juga melihat kepada aspek mesra pengguna. Responden kajian terdiri daripada 45 orang peiajar Semester 1, Diploma Pemasaran di Politeknik Sultan Abdul Hamid Mu'adzam Shah, Jitra Kedah. Pemilihan sampei adalah secara bertujuan (pH/pose/M/ .yanzp/fngJ. Instrumen yang digunakan ialah jenis soal selidik di mana peniiaian dilakukan berdasarkan kepada maklum balas responden terhadap CD Interaktif Pemasaran 1 yang dihasiikan. Kesemua data yang dikumpulkan dianalisis 7MgHggM7MAaH AafMrfca/ PacAagay For ^ocM/J A r e a s ' ( S P ^ Per-sw/: 77.0 yang melibatkan skor min dan peratus (kekerapan). Dapatan kajian menunjukkan penerimaan peiajar terhadap CD Interaktif Pemasaran 1 (skor min=3.14), isi kandungan (skor min = 3.48) dan antara muka mesra pengguna (skor min =3.19). Secara keseiuruhannya nilai skor min menunjukkan keputusan pada tahap tinggi. Daripada dapatan kajian yang diperoleh menunjukkan bahawa PBK CD Interaktif Pemasaran 1 yang dihasiikan oleh pengkaji dapat diterima oleh peiajar, memadai dari segi isi kandungan dan juga dari aspek mesra pengguna. Oleh itu ia sesuai digunakan oleh peiajar-pelajar Diploma Pemasaran Semester 1 di peringkat politeknik. Cadangan- cadangan diberikan untuk menunjukkan bagaimana CD Interaktif Pemasaran 1 boleh dilaksanakan dengan lebih efektif dan efisien daiam usaha membantu memudahkan proses pembelajaran peiajar