27,078 research outputs found
The Quantum Effective Action, Wave Functions and Yang-Mills (2+1)
We explore the relationship between the quantum effective action and the
ground state (and excited state) wave functions of a field theory. Applied to
the Yang-Mills theory in 2+1 dimensions, we find the leading terms of the
effective action from the ground state wave function previously obtained in the
Hamiltonian formalism by solving the Schrodinger equation.Comment: 16 pages, expanded discussion section, added references, version
accepted for Phys. Rev.
Screening-Limited Response of NanoBiosensors
Despite tremendous potential of highly sensitive electronic detection of
bio-molecules by nanoscale biosensors for genomics and proteomic applications,
many aspects of experimentally observed sensor response (S) are unexplained
within consistent theoretical frameworks of kinetic response or electrical
screening. In this paper, we combine analytic solutions of Poisson-Boltzmann
and reaction-diffusion equations to show that the electrical response of
nanobiosensor varies logarithmically with the concentration of target
molecules, time, the salt concentration, and inversely with the fractal
dimension of sensor surface. Our analysis provides a coherent theoretical
interpretation of wide variety of puzzling experimental data that have so far
defied intuitive explanation.Comment: 7 pages, 2 figure
Quantum mechanics on the noncommutative plane and sphere
We consider the quantum mechanics of a particle on a noncommutative plane.
The case of a charged particle in a magnetic field (the Landau problem) with a
harmonic oscillator potential is solved. There is a critical point, where the
density of states becomes infinite, for the value of the magnetic field equal
to the inverse of the noncommutativity parameter. The Landau problem on the
noncommutative two-sphere is also solved and compared to the plane problem.Comment: 12 pages, no figures; references adde
Mapping General System Characteristics to Non- Functional Requirements
The Function point analysis (FPA) method is the preferred scheme of
estimation for project managers to determine the size, effort, schedule,
resource loading and other such parameters. The FPA method by International
Function Point Users Group (IFPUG) has captured the critical implementation
features of an application through fourteen general system characteristics.
However, Non- functional requirements (NFRs) such as functionality,
reliability, efficiency, usability, maintainability, portability, etc. have not
been included in the FPA estimation method. This paper discusses some of the
NFRs and tries to determine a degree of influence for each of them. An attempt
to factor the NFRs into estimation has been made. This approach needs to be
validated with data collection and analysis.Comment: 5 page
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Enterprise Risk Management: Review, Critique, and Research Directions
© 2014 Elsevier Ltd. Many regulators, rating agencies, executives and academics have advocated a new approach to risk management: Enterprise Risk Management (ERM). ERM proposes the integrated management of all the risks an organization faces, which inherently requires alignment of risk management with corporate governance and strategy. Academic research on ERM is still in its infancy, with articles largely in accounting and finance journals but rarely in management journals. We argue that ERM offers an important new research domain for management scholars. A critical review of ERM research allows us to identify limitations and gaps that management scholars are best equipped to address. This paper not only identifies how management scholars can contribute to ERM research, but also points out why ERM research (and practice) needs management research for its development
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