8,124 research outputs found
Intelligent Integrated Management for Telecommunication Networks
As the size of communication networks keeps on growing, faster connections, cooperating technologies and the divergence of equipment and data communications, the management of the resulting networks gets additional important and time-critical. More advanced tools are needed to support this activity. In this article we describe the design and implementation of a management platform using Artificial Intelligent reasoning technique. For this goal we make use of an expert system. This study focuses on an intelligent framework and a language for formalizing knowledge management descriptions and combining them with existing OSI management model. We propose a new paradigm where the intelligent network management is integrated into the conceptual repository of management information called Managed Information Base (MIB). This paper outlines the development of an expert system prototype based in our propose GDMO+ standard and describes the most important facets, advantages and drawbacks that were found after prototyping our proposal
Developing an SNMP agent protocol entity with object oriented Perl
The Damocles project at the University of Twente is developing an SNMP prototyping vehicle. The motivation for such a vehicle stems from the fact that the IETF will develop new versions of SNMP in response to evolving user needs. Whereas the transition to newer versions is attractive from a functional or performance point of view, the effort and cost involved in such a transition should not be underestimated. The Damocles project investigates how modular design and implementation methods and OO techniques facilitate modification and reduce the effort and cost of version transition. In this paper, we discuss an SNMP agent protocol entity written in OO Perl. We discuss the design and implementation of the protocol entity, and how this development effort contributes to the objectives of the Damocles project
The role of voluntary disclosure in listed company: an alternative model
The aim of this paper is to propose a model of social reporting that allows improving the communication of sociability and quantify the sociability. The research approach follows a qualitative methodology, applying a single method approach. The observations are the result of an empirical analysis carried out on the Italian-Stock-Exchange listed companies that have an independent social or sustainability balance sheet. The findings of this research are based, first, on collection of data about the sample, in order to identify the strong and weak points in terms of its management and economic evaluation, and secondly on the introduction of an alternative method of social accounting, with the objective of measuring the sociability of company communication
Wavemoth -- Fast spherical harmonic transforms by butterfly matrix compression
We present Wavemoth, an experimental open source code for computing scalar
spherical harmonic transforms (SHTs). Such transforms are ubiquitous in
astronomical data analysis. Our code performs substantially better than
existing publicly available codes due to improvements on two fronts. First, the
computational core is made more efficient by using small amounts of precomputed
data, as well as paying attention to CPU instruction pipelining and cache
usage. Second, Wavemoth makes use of a fast and numerically stable algorithm
based on compressing a set of linear operators in a precomputation step. The
resulting SHT scales as O(L^2 (log L)^2) for the resolution range of practical
interest, where L denotes the spherical harmonic truncation degree. For low and
medium-range resolutions, Wavemoth tends to be twice as fast as libpsht, which
is the current state of the art implementation for the HEALPix grid. At the
resolution of the Planck experiment, L ~ 4000, Wavemoth is between three and
six times faster than libpsht, depending on the computer architecture and the
required precision. Due to the experimental nature of the project, only
spherical harmonic synthesis is currently supported, although adding support or
spherical harmonic analysis should be trivial.Comment: 13 pages, 6 figures, accepted by ApJ
Elevating commodity storage with the SALSA host translation layer
To satisfy increasing storage demands in both capacity and performance,
industry has turned to multiple storage technologies, including Flash SSDs and
SMR disks. These devices employ a translation layer that conceals the
idiosyncrasies of their mediums and enables random access. Device translation
layers are, however, inherently constrained: resources on the drive are scarce,
they cannot be adapted to application requirements, and lack visibility across
multiple devices. As a result, performance and durability of many storage
devices is severely degraded.
In this paper, we present SALSA: a translation layer that executes on the
host and allows unmodified applications to better utilize commodity storage.
SALSA supports a wide range of single- and multi-device optimizations and,
because is implemented in software, can adapt to specific workloads. We
describe SALSA's design, and demonstrate its significant benefits using
microbenchmarks and case studies based on three applications: MySQL, the Swift
object store, and a video server.Comment: Presented at 2018 IEEE 26th International Symposium on Modeling,
Analysis, and Simulation of Computer and Telecommunication Systems (MASCOTS
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