The radial evolution of the solar wind, 1-10 AU

The interplanetary plasma and magnetic field observations from 1 to 10 AU are reviewed. Over this distance no clear reduction in average speed is seen. The range of wind speeds becomes smaller though high speed streams are still observed. The density, temperature and magnetic field profiles become dominated by the large values seen in the co-rotating interaction regions. The temperature falls more slowly than would be expected from a simple, adiabatic model. Co-rotating shocks appear beyond approximately 3 AU in Voyager data as opposed to beyond approximately 1.5 AU in the Pioneer data. Reverse shocks appear later than forward shocks; reverse shocks do not begin to appear until approximately 4 AU; reverse shocks appear to decay more rapidly than forward shocks. No clear effect due to interaction with the interstellar medium was seen in this radial range

Stream dynamics between 1 AU and 2 AU: A detailed comparison of observations and theory

A radial alignment of three solar wind stream structures observed by IMP-7 and -8 (at 1.0 AU) and Voyager 1 and 2 (in the range 1.4 to 1.8 AU) in late 1977 is presented. It is demonstrated that several important aspects of the observed dynamical evolution can be both qualitatively and quantitatively described with a single-fluid 2-D MHD numerical model of quasi-steady corotating flow, including accurate prediction of: (1) the formation of a corotating shock pair at 1.75 AU in the case of a simple, quasi-steady stream; (2) the coalescence of the thermodynamic and magnetic structures associated with the compression regions of two neighboring, interacting, corotating streams; and (3) the dynamical destruction of a small (i.e., low velocity-amplitude, short spatial-scale) stream by its overtaking of a slower moving, high-density region associated with a preceding transient flow. The evolution of these flow systems is discussed in terms of the concepts of filtering and entrainment

The future Scotland wants:Is it really all about sustainable economic growth?

This article analyses the legal and practical implications of the Scottish Government's overall stated objective of increasing sustainable economic growth and the further implications that arise now that the term is formalised in legislation. It draws on the author's previous research into use of legal duties to deliver government objectives and the meaning and delivery of sustainable development and economic development. It is based on a critical review of Scottish Government policy, the provisions of the Regulatory Reform (Scotland) Act 2014, as well as the written and oral evidence submitted to parliamentary committees scrutinising Bills, their reports, and the subsequent Government responses. More broadly, the article examines the relationship between sustainable economic growth and the more widely accepted and used objective of sustainable development as complementary or contrasting policy objectives and legal duties. In doing so, it also aims to demonstrate the difficulties governments face in trying to put flesh on the bones of the Brundtland definition of sustainable development and accelerate progress towards sustainable living.</p

Simple modeling of self-oscillation in Nano-electro-mechanical systems

We present here a simple analytical model for self-oscillations in nano-electro-mechanical systems. We show that a field emission self-oscillator can be described by a lumped electrical circuit and that this approach is generalizable to other electromechanical oscillator devices. The analytical model is supported by dynamical simulations where the electrostatic parameters are obtained by finite element computations.Comment: accepted in AP

The influence of emotional reaction on help seeking by victims of school bullying

Research has started to focus on how victims of school bullying cope, but there is still very little understanding if why pupils cope in one way and not another. This paper aimed to examine the effects of gender, school-stage, frequency of victimization and different emotions (anger, vengeance, self-pity, indifference, and helplessness) upon the choice of social support that children report using. Questionnaires were completed by 6282 Maltese schoolchildren aged between 9 and 14 years old. Analyses revealed that specific patterns of emotion and victimization predict whether pupils report using certain sources of social support. Results are discussed in relation to their relevance for possible intervention, future research needs and implications for the theoretical framework used

Artificial reef for artisanal fisheries enhancement - an attempt off Trivandrum coast

Several demersal fishes arc found to congregate in the vicinity of submerged objects such as reefs, logs, ship-wrecks and rock out-crops where plants and bcnthic animals flourish than in areas where the bottom is flat and barren. These communities serve as food for larger predators. Submerged objects may, at times, provide shelter and even spawning locations for manya- fish. Underwater observations made by divers while retrieving portions of submerged vessels also report that such habitats harbour considerable concentration of fishe

Model reconstruction from temporal data for coupled oscillator networks

In a complex system, the interactions between individual agents often lead to emergent collective behavior like spontaneous synchronization, swarming, and pattern formation. The topology of the network of interactions can have a dramatic influence over those dynamics. In many studies, researchers start with a specific model for both the intrinsic dynamics of each agent and the interaction network, and attempt to learn about the dynamics that can be observed in the model. Here we consider the inverse problem: given the dynamics of a system, can one learn about the underlying network? We investigate arbitrary networks of coupled phase-oscillators whose dynamics are characterized by synchronization. We demonstrate that, given sufficient observational data on the transient evolution of each oscillator, one can use machine learning methods to reconstruct the interaction network and simultaneously identify the parameters of a model for the intrinsic dynamics of the oscillators and their coupling.Comment: 27 pages, 7 figures, 16 table

Artificial reef for artisanal fisheries enhancement - An attempt off Trivandrum coast

Reefs were constructed mostly in the sandy region at a depth varying from 5 to 27m. Granite stones of varying sizes were put first on the site selected for the reef construction so as to form a circular or rectangular ridge. Eventhough fishing was done throughout the year in the neighbouring areas, in the reef environment, it is done only during the calm season between November and April. Tthe landing during 1987-'88 from the reef environment was only 59.0 tonnes. A drastic reduction in the landing from the reef environment could be noted during the subsequent year, ie., 1988-'89, with a total of 24.2 tonnes. The percentage contribution of fishes from the artificial reef environment dwindled to 3.6 from 8.5. Fishes like Decapterus dayi, Carangoides plagiotaenia, Priacanthus hamrur, Sphyraena sp. Rastrelliger kanagurta and Nemipterus spp. dominated the catch of the reef region. From the present study the general guidelines for the placement of artificial reefs are suggested

A Whole-Farm Profitability Analysis of Organic and Conventional Cropping Systems

Replaced with revised version of paper 05/26/11.Organic Farming, Profitability, Farm Size, Machinery Cost, Crop Production/Industries, Farm Management, Risk and Uncertainty,