PRISMS: remote high resolution in situ multispectral imaging of wall paintings

The non-invasive monitoring and examination of wall paintings in grotto sites, tombs and buildings is particularly important since these paintings are often extremely vulnerable. Traditionally, inspection of wall paintings at high resolution (i.e. sub-millimetre resolution) requires either scaffolding or some heavy and cumbersome mechanical structure to lift a person or camera to the upper parts of a wall or ceiling. We have developed a proto-type portable remote imaging multi-spectral camera that operates at ground level for in situ high-resolution colour and spectral imaging of wall paintings. We present here the latest developments for the instrument and examples of how the instrument can be used for diagnosis of wall paintings

PRISMS: a portable multispectral imaging system for remote in situ examination of wall paintings

We present a proto-type portable remote multispectral imaging system, PRISMS (Portable Remote Imaging System for Multispectral Scanning), that is light-weight, flexible and without any cumbersome mechanical structure for in situ high resolution colour and spectral imaging of large and inaccessible paintings such as wall paintings. This is the first instrument to be able to image paintings at inaccessible heights in situ from ground level to produce not only high resolution colour images but also multispectral images

Pigment identification with optical coherence tomography and multispectral imaging

We describe a new method for non-invasive pigment identification by combining the spectral reflectance in the visible spectrum with near infrared OCT cross-section images of the subsurface layer structure

Cooperative domain type interlayer sp3sp^3-bond formation in graphite

Using the classical molecular dynamics and the semiempirical Brenner's potential, we theoretically study the interlayer sigma bond formation, as cooperative and nonlinear phenomena induced by visible light excitations of a graphite crystal. We have found several cases, wherein the excitations of certain lattice sites result in new interlayer bonds even at non-excited sites. We have also found that, a new interlayer bond is easier to be formed around a bond, if it is already existing. As many more sites are going to be excited, the number of interlayer bonds increases nonlinearly with the number of excited sites. This nonlinearity shows 1.7 power of the total number of excited sites, corresponding to about three- or four-photon process.Comment: 7 pages, 8 figure

Vectoring algal toxin in marine planktonic food webs: sorting out nutritional deficiency from toxicity effects

The present study determined whether increased mortality and delayed development of larval crabs fed heterotrophic prey that themselves have been fed toxin-containing algae is due to toxicity effects or nutritional deficiency. The effects on larval crabs of previous exposure to heterotrophic prey fed toxin-containing algae were examined. Effects of varying length of exposure of larvae to toxin-containing prey were also examined. The rotifer Brachionus plicatilis was used as a heterotrophic prey source for three larval crab species (Lophopanopeus bellus, Metacarcinus magister, and Glebocarcinus oregonensis). Two rotifer treatments were created, one of rotifers fed a toxin-containing alga (Alexandrium andersoni or A. fundyense); the other of rotifers fed a non-toxic, nutritionally sufficient alga (Isochrysis galbana). To distinguish between toxic and nutritional effects, groups of larvae were fed various combinations of the two rotifer types. Diet treatments included the following ratios of toxin-containing algal fed and non-toxic algal fed rotifers: 100%/0%, 75%/25%, 50%/50%, 25%/75%, and 0%/100%. Larval crabs showed no differences in feeding rates or feeding preferences for the two rotifer diets. Crab survival was lower on the 100% toxin-containing algal fed rotifer diet when compared to the 100% nontoxin- containing algae fed rotifer diet for all three crab species. In all three crab species, stage duration was also extended in larvae fed the 100% toxin-containing algal fed rotifers compared to the 100% non-toxin-containing algal fed rotifers. Increased survival and accelerated development when toxin-containing rotifers were replaced in treatments with non-toxin-containing rotifers implicates nutritional deficiency in the former diet rather than its potential toxic effects. Reduction in time of exposure to a prey source reduced survival and extended development to a greater degree in toxin-containing rotifer treatments than in non-toxincontaining diets. There was no apparent effect of prior exposure to toxin-containing prey on survival or stage duration of later larval stage exposed to the same diet. Larval crabs face an unpredictable and complex prey environment once they enter the plankton. Encounters with Harmful Algal Blooms (HAB) or heterotrophic prey that have ingested HAB species may injure larvae that have no other food source. While my research suggests that nutritional deficiency of the rotifers fed toxin-containing algae causes higher mortality rates and delayed development in the crab larvae, toxin transfer cannot be totally eliminated and a combination of the two factors is most likely causing the negative effects. If the prey environment for these larval crabs includes a nutritionally sufficient animal prey source, negative impacts (i.e. delay in stage duration and decreased survival) caused by exposure to HABs and prey that have ingested HABs can be supplemented

Shock propagation through a bubbly liquid in a deformable tube

Shock propagation through a bubbly liquid contained in a deformable tube is considered. Quasi-one-dimensional mixture-averaged flow equations that include fluid–structure interaction are formulated. The steady shock relations are derived and the nonlinear effect due to the gas-phase compressibility is examined. Experiments are conducted in which a free-falling steel projectile impacts the top of an air/water mixture in a polycarbonate tube, and stress waves in the tube material and pressure on the tube wall are measured. The experimental data indicate that the linear theory is incapable of properly predicting the propagation speeds of finite-amplitude waves in a mixture-filled tube; the shock theory is found to more accurately estimate the measured wave speeds

The Key Drivers Of Banks E-recruitment In Manado

Internet has linked most of the countries in this whole world. It is now becoming a critical communications tools and services, with distinct characteristics and communication capabilities that allow an organization or company to use them to achieve multiple communication goals. The objective of this research is to analyze how the key drivers of e-recruitment affect recruitment methods of Banks in Manado. This research is limited to three of Development Banks that are Bank Sulut, Bank Negara Indonesia, and Bank Rakyat Indonesia as Limited Companies that using online system to recruit the right employee from ramdom candidates. Method of Analysis used in this research is quanlitative method that aimed at making valid inferences from the often overwhelming amount of collected data. The implementation of e-recruitment system for recruiting new employees in observed bank in this research has made the recruitment system become beneficial in each bank. To conclude, related with the performance of these banks, the human resources department must consider about the importance of the key drivers because of these factors roles in stimulating the management parties of these banks to execute e-recruitment system in more effective and efficient way. Keywords: internet, e-recruitment, key drivers,bank recruitment

Evolving students’ conceptions about responsible entrepreneurship : a classroom experiment

Following Neck and Corbett’s (2018) call to look at what goes on inside the entrepreneurship classroom, this paper proposed to dive into a three-hour lesson on responsible entrepreneurship, focusing on the point of view of both the teacher who develops learning activities and the students who, we hope, learn from our teachings. This exercise led us to detail a sequence of learning activities easily reproducible in other teaching contexts. The analysis of the definitions produced by the students before and after the lesson allows us to demonstrate the relevance of this lesson to enrich their conceptions about responsible entrepreneurship by associating it with sustainable development, in the complexity of its three constituent pillars

Improving The Urban Public Transport In Developing Countries: The Design Of A New Integrated System In Santiago De Chile

Institute of Transport and Logistics Studies. Faculty of Economics and Business. The University of Sydne