The lighting conditions of a library directly affect the users’ spatial experience, with glass curtain walls being widely used in design skins. Although have been extensively adopted, they increase indoor sun exposure and glare. Considering sunlight duration radiation as basis, this study employs Rhino Grasshopper parametric platforms to parametrically dynamic shading skin. Specifically, our ut...

This work proposes a hybrid compound parabolic concentrator and trough (CPC/PTC) system for photovoltaic/thermal (CPV/T) photovoltaic/thermal-thermoelectric generator (CPVT-TEG) applications. The geometrical design optical analysis of the novel CPC/PTC are discussed in present study. Ray-tracing models were used to identify different variables that influence efficiency both CPC PTC. concentrati...

A well known heuristic sets the length of an overhang as the intersection of lines joining window's top and bottom edges with the respective positions of the sun during the solstices, thus providing complete shade during the summer solstice and full insolation during the winter solstice. The solstices, however, are just two isolated moments, while the solar energy influences building's heat bal...

Pituitary mRNA levels of gonadotropin β-subunits and of their cognate receptors in the testis were studied during puberty in Atlantic cod under normal and experimental photoperiod conditions that suppressed, delayed or accelerated testis maturation. Results are discussed in context with changes in testicular histology and plasma androgen levels, considered as end points of gonadotropic regulati...

Please cite this article in press as: Hinson, D.P., W Mars. Icarus (2009), doi:10.1016/j.icarus.2009.0 We have investigated the near-surface meteorology in the northern hemisphere of Mars through detailed analysis of data obtained with Mars Global Surveyor in January–August 2005. The season in the northern hemisphere ranged from midsummer through winter solstice of Mars Year (MY) 27. We examine...

Irregularities in electron density usually correlate with ionospheric plasma perturbations. These variations causing radio signal fluctuations, response, generate scintillations that frequently occur low-latitude regions. In this research, the combination of an artificial neural network (ANN) genetic algorithm (GA) was implemented to predict scintillations. The GA method considered for obtainin...

Observations are presented of the response of the dayside cusp/cleft aurora to changes in both the clock and elevation angles of the interplanetary magnetic ®eld (IMF) vector, as monitored by the WIND spacecraft. The auroral observations are made in 630 nm light at the winter solstice near magnetic noon, using an all-sky camera and a meridian-scanning photometer on the island of Spitsbergen. Th...

In seasonally breeding mammals, vernal reproductive development is not directly triggered by increases in day length, rather, an endogenous program of photorefractoriness to short winter days initiates spontaneous development in advance of spring. The transition to the reproductive phenotype is energetically demanding. How food availability in late winter and early spring impacts the onset and ...