This paper explores whether and to what extent wind discourages sustainable transportation mode choice, which includes riding public transportation, bicycling, and walking. A six month-long field study was carried out at four locations in San Francisco, a city that has been promoting sustainable transportation mode choice but that experiences high wind levels. It involved surveying pedestrians ...

The wind wave regime of Tallinn Bay, Gulf of Finland, is analysed with the use of a simplified method of long-term computations of wave fields based on a high-resolution nested WAM model and Kalbådagrund (1991–2000) wind data. The distributions of probabilities for wave heights, annual and seasonal mean wave heights, density of wave energy and its flux (wave power), and 1-year return wave heigh...

Pulsed Doppler lidar is the infrared equivalent of pulsed Doppler radar. Instead of raindrops, however, lidars reflect off naturally-occurring dust particles (aerosols). The aerosols have negligible fall velocities and so trace the wind field nearly perfectly. Up until the mid-1990’s, Doppler lidars were limited to research implementations and short-duration, human-in-the-loop deployment for a ...

The question of climate at high obliquity is raised in the context of both exoplanet studies (e.g. habitability) and paleoclimates studies (evidence for low-latitude glaciation during the Neoproterozoic and the ‘‘Snowball Earth’’ hypothesis). States of high obliquity, /, are distinctive in that, for / P 54!, the poles receive more solar radiation in the annual mean than the equator, opposite to...

Wind and warmth are often ignored in Virtual Reality systems – even though studies suggest that they are able to improve users’ presence as well as task performance for certain challenges. In this work, requirements of a wind and warmth system are analyzed and the hardware setup used to create this kind of sensations is described. According to requirements identified, a system able to create wi...

Background and Objectives: Virtual inertia control, as a component of a virtual synchronous generator, is used for the implementation of synchronous generator behaviour in microgrids. In microgrids that include high-capacity distributed generation resources, in addition to virtual inertia, virtual damping can also lead to improvement of frequency stability of the microgrid. The purpose of the c...

abstract: In the present work, determining the optimal strategy(profit based) of multi virtual power plants (VPPs) as well as the objective of maximizing profit through the multi-level control of VPPs are discussed by the micro-grid utilization center including virtual power plants. VPPs include renewable resources such as wind farms, photovoltaic, and conventional resources such as fuel cell, ...

Olofsson, E. 2006. Supporting management of the risk of wind damage in south Swedish forestry. Doctor’s dissertation. ISSN 1652-6880, ISBN 91-576-7095-1 Private forest owners in southern Sweden consider wind damage to be one of the most problematic risks from an economic perspective. A potential climate change also raises the question of the possible impact of such a climate change on the risk ...

The effects of wind protection on growth and total and marketahle yields of snap hean tPhaseolus vulgaris L.) planted at 2-week intervals through the 1994 and 1995 growing seasons were examined. Research was conducted under nonirrigated conditions at the Shelterhelt Research Area, Univ, of Nebraska Agricultural Research and Development Center (ARDC) near Mead. 'Strike' <white-seeded) and 'Rushm...