Monte Carlo simulation of the classical two-dimensional one component plasma

Monte Carlo simulation, lattice dynamics in the harmonic approximation, and solution of the hypernetted chain equation were used to study the classical two-dimensional one component plasma. The system consists of a single species of charged particles immersed in a uniform neutralizing background. The particles interact via a l/r potential, where r is the two dimensional separation. Equations of state were calculated for both the liquid and solid phases. Results of calculation of the thermodynamic functions and one and two particle correlation functions are presented

An intelligent allocation algorithm for parallel processing

The problem of allocating nodes of a program graph to processors in a parallel processing architecture is considered. The algorithm is based on critical path analysis, some allocation heuristics, and the execution granularity of nodes in a program graph. These factors, and the structure of interprocessor communication network, influence the allocation. To achieve realistic estimations of the executive durations of allocations, the algorithm considers the fact that nodes in a program graph have to communicate through varying numbers of tokens. Coarse and fine granularities have been implemented, with interprocessor token-communication duration, varying from zero up to values comparable to the execution durations of individual nodes. The effect on allocation of communication network structures is demonstrated by performing allocations for crossbar (non-blocking) and star (blocking) networks. The algorithm assumes the availability of as many processors as it needs for the optimal allocation of any program graph. Hence, the focus of allocation has been on varying token-communication durations rather than varying the number of processors. The algorithm always utilizes as many processors as necessary for the optimal allocation of any program graph, depending upon granularity and characteristics of the interprocessor communication network

Infrared astronomical satellite (IRAS) catalogs and atlases. Volume 1: Explanatory supplement

The Infrared Astronomical Satellite (IRAS) was launched on January 26, 1983. During its 300-day mission, IRAS surveyed over 96 pct of the celestial sphere at four infrared wavelengths, centered approximately at 12, 25, 60, and 100 microns. Volume 1 describes the instrument, the mission, and data reduction

Enabling Future Sustainability Transitions: An Urban Metabolism Approach to Los Angeles Pincetl et al. Enabling Future Sustainability Transitions

Summary: This synthesis article presents an overview of an urban metabolism (UM) approach using mixed methods and multiple sources of data for Los Angeles, California. We examine electric energy use in buildings and greenhouse gas emissions from electricity, and calculate embedded infrastructure life cycle effects, water use and solid waste streams in an attempt to better understand the urban flows and sinks in the Los Angeles region (city and county). This quantification is being conducted to help policy-makers better target energy conservation and efficiency programs, pinpoint best locations for distributed solar generation, and support the development of policies for greater environmental sustainability. It provides a framework to which many more UM flows can be added to create greater understanding of the study area's resource dependencies. Going forward, together with policy analysis, UM can help untangle the complex intertwined resource dependencies that cities must address as they attempt to increase their environmental sustainability

Quantum Dynamics of Solitons in Strongly Interacting Systems on Optical Lattices

Mean-field dynamics of strongly interacting bosons described by hard core bosons with nearest-neighbor attraction has been shown to support two species of solitons: one of Gross-Pitaevskii (GP-type) where the condensate fraction remains dark and a novel non-Gross-Pitaevskii-type (non-GP-type) characterized by brightening of the condensate fraction. Here we study the effects of quantum fluctuations on these solitons using the adaptive time-dependent density matrix renormalization group method, which takes into account the effect of strong correlations. We use local observables as the density, condensate density and correlation functions as well as the entanglement entropy to characterize the stability of the initial states. We find both species of solitons to be stable under quantum evolution for a finite duration, their tolerance to quantum fluctuations being enhanced as the width of the soliton increases. We describe possible experimental realizations in atomic Bose Einstein Condensates, polarized degenerate Fermi gases, and in systems of polar molecules on optical lattices

Roads in Rainforest: best practice guidelines for planning, design and management

These Guidelines were developed as a framework for understanding the primary ecological issues to be addressed in the planning, design and management of roads in rainforest environments. This manual has been created to assist in reducing the main impacts of roads, which are primarily: • Habitat loss and fragmentation; • Reduction in habitat quality; • Edge effects; • Reduced animal movements, resulting in restricted genetic flows and diminished survival rates in some species; • Population reduction through road kill of wildlife species; • Erosion, sedimentation and pollution; • Impacts on scenic quality; • Disturbance from vehicular noise, headlights and movement; • Facilitation of the spread of exotic pests, • weeds and diseases; and • Direct mortality from road construction activities. Cumulatively, these impacts threaten the biodiversity and integrity of ecosystem processes throughout Queensland’s tropical forests. It is therefore imperative that current and future road infrastructure be designed with consideration of these factors within the context of the natural environment. This document provides a set of principles and supporting guidelines for implementing best practice planning, design and management for ecologically sustainable roads within rainforests throughout Queensland. The intention of these Guidelines is to describe the particular aspects of rainforest environments that are unique and thus require particular consideration when designing and constructing roads in these habitats. Therefore, these Guidelines were specifically developed to: • Inform planners, engineers and managers about the key ecological elements (Principles) to consider when building roads in rainforest environments; • Identify the most important issues to consider when planning, designing and implementing plans for road infrastructure so that the impacts to the primary ecological elements of rainforests are minimised. Each major issue is clarified within its own ‘Guideline’; and • Provide a set of steps and checklists within each Guideline to ensure that the core Principles are maintained throughout the different phases of planning, design and construction

Office Bullying in the Philippines and the Need for Public Policy

There is an urgent need to solve the problem of workplace bullying in both private and government sectors. Bullying at work creates serious negative consequences to the victims and the organization affecting their productivity. The magnitude of the problem necessitates state intervention to correct market and government failures. This policy paper studies office bullying and the need to legislate to realize efficient and effective allocation of government and private resources. It is guided by the Constitutional mandate that maintenance of peace, harmony, health and safety at work is an inherent duty of the State because of its inherent power to issue orders and command obedience to mitigate its effects. Using Cost Benefit Analysis, Institutional Analysis to policy making, and Rational-Decision making as tools for analysis, crafting and passing upon a statute is the most feasible means to address the problem of workplace bullying. The need to legislate a national policy on workplace bullying is necessary to mitigate its negative consequences both to employees and organizational productivity. Office bullying as a public issue also requires strict monitoring and evaluation of the implementation of similar or related laws may also address the problems cause by the same destructive behaviors but are inadequately explored in many researches

Anomalous specific heat jump in the heavy fermion superconductor CeCoIn5_5

We study the anomalously large specific heat jump and its systematic change with pressure in CeCoIn$_5$ superconductor. Starting with the general free energy functional of the superconductor for a coupled electron boson system, we derived the analytic result of the specific heat jump of the strong coupling superconductivity occurring in the coupled electron boson system. Then using the two component spin-fermion model we calculate the specific heat coefficient $C(T)/T$ both for the normal and superconducting states and show a good agreement with the experiment of CeCoIn$_5$. Our result also clearly demonstrated that the specific heat coefficient $C(T)/T$ of a coupled electron boson system can be freely interpreted as a renormalization either of the electronic or of the bosonic degrees of freedom.Comment: 5 pages, 2 figure