920 research outputs found
Fundamental Analysis of Car Manufacturing Companies in India for 1.4.2005 to 31.3.2016
The most important strength in today's volatile financial market is information. Investors always confused on the information as to where to invest, when to invest and how much to invest their money. Generally, the information derives from market or some different sources. To act on this information, analysts, experts, and researchers start researching whether the information has positive or negative impact. At individual level, an investor can also do the fundamental analysis, which will give him a better foundation for his investment decisions. This analysis helps investors in taking decision. If investor will take decision based on wrong information, the losses incurred could be tremendous and harmful and the recovery of the investment can take a lot of time or sometimes it can be irrecoverable. Hence, investors should spend a sizable amount of time for scrutinizing financial position of the company, shares of the company and calculating estimations of the same. The fundamental analysis helps to understand the patterns in company's financial performance. One can easily predict the future performance based on fundamental analysis by using financial statements
Schwinger-Dyson operator of Yang-Mills matrix models with ghosts and derivations of the graded shuffle algebra
We consider large-N multi-matrix models whose action closely mimics that of
Yang-Mills theory, including gauge-fixing and ghost terms. We show that the
factorized Schwinger-Dyson loop equations, expressed in terms of the generating
series of gluon and ghost correlations G(xi), are quadratic equations S^i G = G
xi^i G in concatenation of correlations. The Schwinger-Dyson operator S^i is
built from the left annihilation operator, which does not satisfy the Leibnitz
rule with respect to concatenation. So the loop equations are not differential
equations. We show that left annihilation is a derivation of the graded shuffle
product of gluon and ghost correlations. The shuffle product is the point-wise
product of Wilson loops, expressed in terms of correlations. So in the limit
where concatenation is approximated by shuffle products, the loop equations
become differential equations. Remarkably, the Schwinger-Dyson operator as a
whole is also a derivation of the graded shuffle product. This allows us to
turn the loop equations into linear equations for the shuffle reciprocal, which
might serve as a starting point for an approximation scheme.Comment: 13 pages, added discussion & references, title changed, minor
corrections, published versio
Exploring Parameter Redundancy in the Unitary Coupled-Cluster Ansatze for Hybrid Variational Quantum Computing
One of the commonly used chemical-inspired approaches in variational quantum
computing is the unitary coupled-cluster (UCC) ansatze. Despite being a
systematic way of approaching the exact limit, the number of parameters in the
standard UCC ansatze exhibits unfavorable scaling with respect to the system
size, hindering its practical use on near-term quantum devices. Efforts have
been taken to propose some variants of UCC ansatze with better scaling. In this
paper we explore the parameter redundancy in the preparation of unitary
coupled-cluster singles and doubles (UCCSD) ansatze employing spin-adapted
formulation, small amplitude filtration, and entropy-based orbital selection
approaches. Numerical results of using our approach on some small molecules
have exhibited a significant cost reduction in the number of parameters to be
optimized and in the time to convergence compared with conventional UCCSD-VQE
simulations. We also discuss the potential application of some machine learning
techniques in further exploring the parameter redundancy, providing a possible
direction for future studies
Power flow and small signal stability analysis on the interconnected Philippine power grid
SummaryThe Philippines, as one of the developing nations in south-east Asia, has isolated power system networks which bring forth challenges in its operational systems, especially when subjected to a deregulated environment. This paper presents an analysis on the power flow and small signal stability of the interconnected three isolated Philippine Power Grid. To achieve this, eigenvalue analysis is employed to probe the small signal stability of the main power grids. The free software, Power Systems Analysis Toolbox (PSAT), is used to develop the model using MATLAB®/Simulink®. There have been no publicly available studies regarding stability of the proposed link between the major grid and the Mindanao (south island) grid. Participation factors were further studied to determine which states contributes most with the variety of modes. The lowest oscillatory damping modes are also assessed to better understand the systems characteristics
Possible large-N fixed-points and naturalness for O(N) scalar fields
We try to use scale-invariance and the large-N limit to find a non-trivial 4d
O(N) scalar field model with controlled UV behavior and naturally light scalar
excitations. The principle is to fix interactions by requiring the effective
action for space-time dependent background fields to be finite and
scale-invariant when regulators are removed. We find a line of non-trivial UV
fixed-points in the large-N limit, parameterized by a dimensionless coupling.
They reduce to classical la phi^4 theory when hbar -> 0. For hbar non-zero,
neither action nor measure is scale-invariant, but the effective action is.
Scale invariance makes it natural to set a mass deformation to zero. The model
has phases where O(N) invariance is unbroken or spontaneously broken. Masses of
the lightest excitations above the unbroken vacuum are found. We derive a
non-linear equation for oscillations about the broken vacuum. The interaction
potential is shown to have a locality property at large-N. In 3d, our
construction reduces to the line of large-N fixed-points in |phi|^6 theory.Comment: 23 page
Method for the location of primary wear scars from retrieved metal on metal hip replacements
Retrieved metal-on-metal acetabular cups are valuable resources in investigating the wear behaviour of failed hip implants, but adequate methods to do so are lacking. To further contribute to addressing this issue, we developed a method to detect the in vivo location of the primary wear scar of an explanted cup
From the Editors
We are excited to present you with the 16th annual edition of The Medicine Forum. This work is a culmination of months of effort on the part of medical students, residents, fellows and faculty to share clinical pearls from the last year of their experiences.
Amongst the greatest strengths of medical professionals and patients alike is the ability to tell stories. Stories, and how they are told form the basis of medical care. The way in which a particular patient\u27s story unfolds has a lasting impact on physicians, trainees, other medical staff, and perhaps most importantly, on future patients. Stories of patient cases formed the earliest beginnings of evidence-based medicine. There is a Babylonian tablet dating earlier than 6000 B.C.E. which describes a case of dropsy , for the instruction of patients of this condition.1 Stories told amongst practitioners of medicine date back to the first published medical journal, the Acta Medicorum Berolinensium, from Berlin in 1722.
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