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Population growth and environment as a self-organizing system

multidisciplinary, holistic understanding, linking any particular model to the co-evolution of its environment. In addition, we show how evolutionary processes link the microscopic level of molecules through ... Journal of Population Growth and Environment as a Self-organizing System PETER M. ALLEN 0 0 International Ecotechnology Research Centre, Cranji'eld University , Bedford, MK43 OAL , UK - Over

The Efficiency of Linda for General Purpose Scientific Programming

, however, are of little value unless Linda programs execute efficiently. The goal of this article is to demonstrate that Linda programs are efficient making Linda an effective general purpose tool for ... compari­ sons and discusses a single system-the Linda programming environment. Linda is an example of a coordination language [7] (i.e., a language that is restricted in scope to the execution and

Noise-induced stabilization and fixation in fluctuating environment

pairwise competition case. A Wentzel-Kramers-Brillouin (WKB) technique yields a general formula for the chance of fixation of a deleterious mutant in the strong selection regime. The possibility of long-term ... if it was born in the right time, so the chance of fixation will grow to one half. In general the transition from abundance-dependence to environment dependence facilitates the chance of low-abundance

A Stochastic TB Model for a Crowded Environment

crowded environment which provides favourable conditions for TB to flourish is prisons and more so if the prison is full beyond its capacity. There are more than million inmates in prisons all over the ... analysis of TB in prisons as prisons have been recognized as institutions with very high TB burden as compared to a general population [17]. For a deterministic model of similar type, in [10] we computed

A Stochastic TB Model for a Crowded Environment

crowded environment which provides favourable conditions for TB to flourish is prisons and more so if the prison is full beyond its capacity. There are more than million inmates in prisons all over the ... analysis of TB in prisons as prisons have been recognized as institutions with very high TB burden as compared to a general population [17]. For a deterministic model of similar type, in [10] we computed

Investigating the genetic architecture of general and specific psychopathology in adolescence

psychotic experiences, negative dimension, depression and anxiety, but, when modelling a general psychopathology factor based on these measures, specific effects above this persisted only for the negative ... negative dimension. Similar factor relationships were observed for the neuroticism PRS, with a (weak) specific effect only for anxiety once modelling general psychopathology. Psychopathology during

Research on Multidomain Fault Diagnosis of Large Wind Turbines under Complex Environment

Under the complicated environment of large wind turbines, the vibration signal of a wind turbine has the characteristics of coupling and nonlinearity. The traditional feature extraction method for ... that are set during the construction of the random forest classification model has an important influence on the accuracy of the model and the calculation efficiency. In general, takes around 500 to

Resource Unconstrained and Constrained Project Scheduling Problems and Practices in a Multiproject Environment

current practices under resource unconstrained and constrained settings. The specific objectives are (1) determining the most challenging issues being faced in handling multiproject environment, (2 ... ; solution approaches; and tools and techniques. An online questionnaire survey was conducted to address the objectives above. The top challenging issues in managing multiproject environment are identified

Science under siege: behind the scenes at Trump’s troubled environment agency

busy trying to roll back environmental regulations put in place by Obama — including regulations that Pruitt had challenged while serving as Oklahoma attorney-general. On 28 March, Trump authorized

Nanostructured titanium regulates osseointegration via influencing macrophage polarization in the osteogenic environment

Nanostructured titanium regulates osseointegration via influencing macrophage polarization in the osteogenic environment Jinjin Wang,1,2,* Fanhui Meng,3,* Wen Song,3,* Jingyi Jin,2 Qianli Ma,2 ... mice BMSCs The BMSCs were isolated from femurs and tibias of 6–8-weekold C57BL/6 mice. In general, the whole bone marrow contents were flushed out of the bone cavity using phosphate-buffered saline (PBS

Statistical Physics of the Inflaton Decaying in an Inhomogeneous Random Environment

We derive a stochastic wave equation for an inflaton in an environment of an infinite number of fields. We study solutions of the linearized stochastic evolution equation in an expanding universe ... expand forming the observed galactic structure. The transition to classicality requires a decoherence. The decoherence can be obtained through an interaction with an environment. The environment may

Nanomaterials in the environment

biological systems. The field of nanotechnology has created risk for environment and human health. The toxicity of nanoparticles may be affected by different physicochemical properties, including size, shape ... understanding of the human and environment hazard and risk of nanotechnology should be explained by the scientific investigations for help to protect human and environmental health and to ensure the benefits of

Hybrid Type-2 Fuzzy-Sliding Mode Controller for Navigation of Mobile Robot in an Environment Containing a Dynamic Target

We are interested in developing a new control architecture to command a mobile robot in a partially known environment. For that purpose, a hybrid control architecture is adopted, combining the ... Controlling a mobile robot in an unknown environment is an attractive aspect in the field of robotic, as it is used in many applications. Therefore, researchers have developed several methods of controlling non

Fluorescence techniques for the determination of polycyclic aromatic hydrocarbons in marine environment: an overview

potential carcinogenic and mutagenic activity and their frequent occurrence in the environment, above all in the marine environment. Therefore it is an important to establish simple, sensitive and reliable ... . Specifically, the presence of PAHs has been reported in marine environment: sea water [ 5-9, 29-33 ], sediments [ 2,3,35-51 ], and plankton, seaweed and filter feeding organisms [ 52-71 ]. These

Automatic and Systematic Atomistic Simulations in the MedeA® Software Environment: Application to EU-REACH

functions within the Material Exploration and Design Analysis (MedeA®) software environment, which handle the automatic execution of sequences of tasks for large numbers of molecules including the creation of ... successfully implemented. In the following, we will first provide an overview of the MedeA software environment before we explain the software functionalities and features that were added to achieve the

Developing a mathematical modelling course in a virtual learning environment

fieldwork. These procedures helped the researchers to answer the research question: How can technological resources available in a Virtual Learning Environment (VLE) help students to interact and ... in their interaction and collaboration in solving problems they face daily, by elaborating modelling projects through the use of technological resources available in this environment. By developing

Environment, Security and Global Affairs

interdependence of environment and security flourished and traversed the Atlantic, transforming into national, transatlantic and global cultures of environmental security. The environment and security developed a ... so-called ‘‘Environment Management Group’’ which was based at the Brussels General Directorate for Industrial, Technology and Scientific Affairs. In the course of the next few months, this group became

Urbanization, environment and pharmaceuticals: advancing comparative physiology, pharmacology and toxicology

Pharmaceuticals are routinely reported in the environment, which indicates an increasingly urban water cycle and highlights a global megatrend. Physicochemical properties and intrinsic biological ... of increasingly urban ecosystems. Two decades ago studies of pharmaceuticals in the environment in general, and aquatic ecosystems in particularly, were rare. One of our earliest posters on the subject

Estimating the Influence of Improper Workplace Environment on Human Error: Posterior Predictive Analysis

A model for identifying, analyzing, and quantifying the mechanisms for the influence of improper workplace environment on human error in elevator installation is proposed in this study. By combining ... environment stage needs to be more connected to the construction stage. Thus, the setup of construction methods and processes must also be included in the general category of workplace environment [7

Temperature Drift Compensation of Eddy Current Sensor under High Temperature Environment

measurement, thickness measurement, eddy current testing(ET) and so on. However, eddy current sensors are very susceptible to temperature changes,especially in high temperature environment. The measurement ... error, which can’t be ignored in the high temperature area, makes the use of the eddy current sensor be limited in the high temperature environment. Analysis shows that temperature affects almost all the