On pointed Hopf algebras associated to unmixed conjugacy classes in S_n

Let s in S_n be a product of disjoint cycles of the same length, C the conjugacy class of s and rho an irreducible representation of the isotropy group of s. We prove that either the Nichols algebra B(C, rho) is infinite-dimensional, or the braiding of the Yetter-Drinfeld module is negative

Penjadwalan Untuk Meminimasi Received Date Dengan Metode Load Oriented Manufacturing Control(Studi Kasus di CV Wijaya Lesmana Sejahtera)

Production activities are important in the manufacturing industry. The thing to be achieved in production activities is customer satisfaction in using products produced by a company. Accuracy in the fulfillment of the time of receipt of orders promised by the company and the quality of products as expected, and the cost charged is considered reasonable elements of satisfaction that must be met by the company to its customers CV Wijaya Lesmana Sejahtera is a manufacturing company engaged in the manufacture of products Furniture such as, cabinets, tables, chairs, backdrop TV, and others. Based on data from the company in the year of 2016, the company only able to do 7 projects (63,64%) from 11 projects handled, while 4 project (36,36% have delay of completion.This research aims to determine the time of receipt of order with Load Oriented method Manufacturing Control (LOMC) where the calculation is based on the available capacity at each work station, processing time at each work station and production flow on the production floor From the Spk data, the order completion time for the food cabinet (1) is 18 days, 1) is 14 days, the wardrobe (2) is 17 days, the dresser (2) is 25 days, and the wardrobe (3) is 27 days.At the LOMC method, the time to finish the order for the food cabinet (1) is 15 (1) is 14 days, the food cabinet (2) is 12 days, the closet (2) is 5 days and the food cupboard (3) is 2 days.This shows the calculation with the method LOMC is more accurate than the actual method

Value-at-Risk and Tsallis statistics: risk analysis of the aerospace sector

In this study, we analyze the aerospace stocks prices in order to characterize the sector behavior. The data analyzed cover the period from January 1987 to April 1999. We present a new index for the aerospace sector and we investigate the statistical characteristics of this index. Our results show that this index is well described by Tsallis distribution. We explore this result and modify the standard Value-at-Risk (VaR), financial risk assessment methodology in order to reflect an asset which obeys Tsallis non-extensive statistics.Comment: 10 pages, 4 figures, 1 table, to appear in Physica

Probing Quantized Einstein-Rosen Waves with Massless Scalar Matter

The purpose of this paper is to discuss in detail the use of scalar matter coupled to linearly polarized Einstein-Rosen waves as a probe to study quantum gravity in the restricted setting provided by this symmetry reduction of general relativity. We will obtain the relevant Hamiltonian and quantize it with the techniques already used for the purely gravitational case. Finally we will discuss the use of particle-like modes of the quantized fields to operationally explore some of the features of quantum gravity within this framework. Specifically we will study two-point functions, the Newton-Wigner propagator, and radial wave functions for one-particle states.Comment: Accepted for publication in Physical Review

Dynamics and Steady States in excitable mobile agent systems

We study the spreading of excitations in 2D systems of mobile agents where the excitation is transmitted when a quiescent agent keeps contact with an excited one during a non-vanishing time. We show that the steady states strongly depend on the spatial agent dynamics. Moreover, the coupling between exposition time ($\omega$) and agent-agent contact rate (CR) becomes crucial to understand the excitation dynamics, which exhibits three regimes with CR: no excitation for low CR, an excited regime in which the number of quiescent agents (S) is inversely proportional to CR, and for high CR, a novel third regime, model dependent, here S scales with an exponent $\xi -1$, with $\xi$ being the scaling exponent of $\omega$ with CR

WKB Propagation of Gaussian Wavepackets

We analyze the semiclassical evolution of Gaussian wavepackets in chaotic systems. We prove that after some short time a Gaussian wavepacket becomes a primitive WKB state. From then on, the state can be propagated using the standard TDWKB scheme. Complex trajectories are not necessary to account for the long-time propagation. The Wigner function of the evolving state develops the structure of a classical filament plus quantum oscillations, with phase and amplitude being determined by geometric properties of a classical manifold.Comment: 4 pages, 4 figures; significant improvement

Dampak Pengumuman Tax Amnesty pada Saham LQ-45 BEi

Penelitian ini bertujuan untuk mengetahui dampak pengumuman tax amnesty dengan melihat perbedaan rata-rata abnormal return dan rata-rata abnormal return yang dihasilkan sebelum dan sesudah pengumuman tax amnesty di BEI. Penelitian ini menggunakan 45 Perusahaan yang terdaftar dalam LQ-45 periode Februari 2016 s/d Juli 2016. Teknik analisis data menggunakan pendekatan mean adjusted model untuk mencari abnormal return, selanjutnya hasil analisis data diuji dengan uji-t dan paired sample t-test. Hasil penelitian menemukan bahwa terdapat reaksi pasar yang bervariasi namun tidak signifikan secara statistik. Hal tersebut mengindikasikan bahwa investor sebagai pelaku pasar menganggap informasi pengumuman ini tidak mengandung informasi yang berarti bagi investor, sehingga investor di pasar modal tidak bereaksi. Selanjutnya hasil pengujian data menggunakan uji paired sample t-test menunjukkan bahwa tidak terdapat perbedaan yang signifikan antara rata-rata abnormal return yang diperoleh seluruh Perusahaan yang terdaftar pada saham LQ-45 di Bursa Efek Indonesia sebelum dan sesudah pengumuman tax amnesty

Ge-substitutional defects and the r3xr3 <--> 3x3 transition in alpha--SnGe(111)

The structure and energetics of Ge substitutional defects on the alpha-Sn/Ge(111) surface are analyzed using Density Functional Theory (DFT) molecular dynamics (MD) simulations. An isolated Ge defect induces a very local distortion of the 3x3 reconstruction, confined to a significant downwards displacement (-0.31 A) at the defect site and a modest upward displacement (0.05 A) of the three Sn nearest neighbours with partially occupied dangling bonds. Dynamical fluctuations between the two degenerate ground states yield the six-fold symmetry observed around a defect in the experiments at room temperature. Defect-defect interactions are controlled by the energetics of the deformation of the 3x3 structure: They are negligible for defects on the honeycomb lattice and quite large for a third defect on the hexagonal lattice, explaining the low temperature defect ordering.Comment: 4 pages, Revtex, 7 Encapsulated Postscript figures, uses epsf.sty. Submitted to Phys. Rev. Let

Cheaper, cleaner, more reliable: why invest in cross-border power-trading

Despite improvements to energy supply over the years, many Indian states still face frequent power shortages. Meanwhile, neighboring Nepal and Bhutan have large reserves of untapped hydro power with the potential to meet unserved demand for energy in major load centres. Investing in interconnections could also contribute to significant reductions in CO2 emissions. Today’s blog quantifies potential gains from an integrated South Asian power