Dissolve From One To Two

After years of using a single Carousel projector, I switched over to two new projectors and a dissolve unit. What happened from there on has been a learning experience I didn\u27t expect

Partition-dependent framing effects in lab and field prediction markets

Many psychology experiments show that individually judged probabilities of the same event can vary depending on the partition of the state space (a framing effect called "partition-dependence"). We show that these biases transfer to competitive prediction markets in which multiple informed traders are provided economic incentives to bet on their beliefs about events. We report results of a short controlled lab study, a longer field experiment (betting on the NBA playoffs and the FIFA World Cup), and naturally-occurring trading in macro-economic derivatives. The combined evidence suggests that partition-dependence can exist and persist in lab and field prediction markets

Angkor Underground - Applying GPR to analyse the diachronic structure of a great urban complex

This thesis is based on surveys of ground-penetrating radar (GPR) conducted at Angkor, Cambodia. The appraisal of preceding remote sensing surveys led to selective ground based prospection for archaeological objects of interest on different scales. The successive relocation of the political and religious centre from the 9th to the 14th century has left a palimpsest landscape that reaches from small artificial habitation mounds, masonry monuments and their enclosures, to the extensive water management network of channels and earthworks that covered large parts of the floodplain between the Kulen Hills and Lake Tonle Sap. To make efficient use of the technique, the GPR survey had to be adjusted to those dimensions. The area-covering grid method was chosen for small scale surveys on habitation patterns, production sites and cemeteries, testing potential and limits in the application. A major factor in the measuring and processing of data was the floodplain geology of predominantly clayey sand and an environment prone to inundation that provided varying signal penetration depths depending on either compact or soft soil. For the larger scales, GPR was used in combination with GPS, GIS and remote sensing data sets. The concept of spatial configuration of monuments in and outside of enclosures led the search for remains of missing laterite and sandstone structures. A survey in the centre of Angkor Wat revealed the outline of six towers as part of a potential quincunx formation. They were further analysed by excavations to establish a preliminary construction history of the area. Surveys inside the peripheral enclosures of Chau Srei Vibol, Banteay Sra and Prasat Komnap showed evidence of demolished structures, some of it possibly from the Angkorian period. For questions concerning the functioning of a water management system in the Angkorian floodplain, GPR profiles in search for infrastructure were conducted alongside and over the embankments of the giant reservoirs. Evidence of outlets in the central areas of the eastern embankments of all four baray at Angkor confirmed them being part of the network. On the largest scale, GPR transects were run across parts of the floodplain to investigate the network of canals and earthworks that had been mapped by remote sensing. Obstacles, profiles and grids as well as the detected anomalies were integrated into a geo-referenced GIS database. Potential connections between centres and temples were integrated at areas where associated and previously mapped earthworks discontinued. Anomalies associated to the water management features were classified according to their characteristics and potential function as former artificial and natural channels, moats, ponds as well as masonry remains, and analysed with regard to archaeological maps and available remote sensing data. Newly acquired high resolution satellite radar (TerraSAR-X) data was used to evaluate a potential relation between water saturation and anomalies. The complete dataset was analysed for a complementation of archaeological maps and with the intent to separate features of the artificial canal network of Angkor from the natural landscape and the original distribution of rivers

Angkor Underground - Applying GPR to analyse the diachronic structure of a great urban complex

This thesis is based on surveys of ground-penetrating radar (GPR) conducted at Angkor, Cambodia. The appraisal of preceding remote sensing surveys led to selective ground based prospection for archaeological objects of interest on different scales. The successive relocation of the political and religious centre from the 9th to the 14th century has left a palimpsest landscape that reaches from small artificial habitation mounds, masonry monuments and their enclosures, to the extensive water management network of channels and earthworks that covered large parts of the floodplain between the Kulen Hills and Lake Tonle Sap. To make efficient use of the technique, the GPR survey had to be adjusted to those dimensions. The area-covering grid method was chosen for small scale surveys on habitation patterns, production sites and cemeteries, testing potential and limits in the application. A major factor in the measuring and processing of data was the floodplain geology of predominantly clayey sand and an environment prone to inundation that provided varying signal penetration depths depending on either compact or soft soil. For the larger scales, GPR was used in combination with GPS, GIS and remote sensing data sets. The concept of spatial configuration of monuments in and outside of enclosures led the search for remains of missing laterite and sandstone structures. A survey in the centre of Angkor Wat revealed the outline of six towers as part of a potential quincunx formation. They were further analysed by excavations to establish a preliminary construction history of the area. Surveys inside the peripheral enclosures of Chau Srei Vibol, Banteay Sra and Prasat Komnap showed evidence of demolished structures, some of it possibly from the Angkorian period. For questions concerning the functioning of a water management system in the Angkorian floodplain, GPR profiles in search for infrastructure were conducted alongside and over the embankments of the giant reservoirs. Evidence of outlets in the central areas of the eastern embankments of all four baray at Angkor confirmed them being part of the network. On the largest scale, GPR transects were run across parts of the floodplain to investigate the network of canals and earthworks that had been mapped by remote sensing. Obstacles, profiles and grids as well as the detected anomalies were integrated into a geo-referenced GIS database. Potential connections between centres and temples were integrated at areas where associated and previously mapped earthworks discontinued. Anomalies associated to the water management features were classified according to their characteristics and potential function as former artificial and natural channels, moats, ponds as well as masonry remains, and analysed with regard to archaeological maps and available remote sensing data. Newly acquired high resolution satellite radar (TerraSAR-X) data was used to evaluate a potential relation between water saturation and anomalies. The complete dataset was analysed for a complementation of archaeological maps and with the intent to separate features of the artificial canal network of Angkor from the natural landscape and the original distribution of rivers

Modelling of the Quench Process for the Optimisation of the Design and Protection of Superconducting Busbars for the LHC

The superconducting busbars powering the LHC magnets are highly stabilised with copper to reduce the probability of a quench starting in a busbar and to avoid excessive temperatures after a quench during current discharge. In order to determine the required copper stabilisation and the parameters of the protection system a finite difference program has been developed. The program numerically approximates the heat balance equation and evaluates the temperature profile after a quench as a function of time and space. The approach emphasises the modelling of heat transfer into helium. The evaluation of the temperature includes the entire quench process, i.e., the time for quench detection and the current decay

The recycling of OMC's carbon reinforcement by solvolysing thermoset matrix. A way of sustainability for composites.

Originally developed for high-tech applications, carbon fibre/thermoset matrix composites have been increasingly used in leisure and sports industries, for several years. But the carbon reinforcement is the most expensive constituent, and also the most environmentally impacting in the elaboration of a composite part. To this day, no end-of-life solution or recycling process efficiently exists. This paper aims at demonstrating that recovering the carbon reinforcement is possible, technically and economically speaking. Moreover, it is particularly the basis for a life cycle analysis that assesses benefits and environmental challenges of this recycling loop based on the reinforcement recovery by a solvolysis of the organic matrix. Lastly, the lack of data to consider the better end-of-life option (reuse, recycling, energy recovery and material valorisation) will be underlined

Silvicultural strategies under changing environmental conditions – guiding principles, target system and forest development types

Der Beitrag vermittelt das Leitbild für die Bewirtschaftung des sächsischen Landeswaldes. Dabei wird zunächst auf übergreifende Fragen der Waldbewirtschaftung, wie die inhaltliche Weiterentwicklung des Nachhaltigkeitsbegriffes, grundlegende Fragen einer multifunktionalen Waldbewirtschaftung sowie die Einordnung des Waldbaus in den Kontext forstbetrieblicher Betrachtungen, eingegangen. Für die Standortsregionen Tiefland, Lößhügelland und Mittelgebirge wird auf der Basis regionaler Vorrangfunktionen die grundlegende Ausrichtung des Waldbaus mit ihren Auswirkungen auf das Holzaufkommen und notwendige Verjüngungsinvestitionen sowie der daraus resultierende Bedarf an forstlichem Vermehrungsgut erörtert. Als eine der Grundlagen für nachhaltige Bodennutzung werden Kriterien für den Einsatz hoch mechanisierter Holzerntesysteme, als Synthese aus standortskundlichen und forsttechnischen Parametern, dargestellt. Auf der Planungsebene wird mit dem Waldentwicklungstyp ein dynamisches Planungsinstrument vorgestellt, mit dessen Hilfe die formulierten Leitbilder und Ziele regional und lokal differenziert in der Forstpraxis realisiert werden können. Die projizierten regionalen Klimaveränderungen wurden als wesentliche Hintergrundinformation berücksichtigt. Gegenüber der aktuellen Richtlinie über die Bestandeszieltypen im Landeswald erfolgte eine stärkere Differenzierung auf der Grundlage von Substrattypen, als neue standörtliche Bezugseinheit. Die Umsetzung dieses Konzeptes wird beispielhaft für die beiden Modellregionen Dübener Heide und Lausitz dargestellt. Schlüsselwörter: Waldbau, Waldbewirtschaftung, Waldentwicklungstyp, Leitbild, Zielsystem, Holzernte, Bodenschutz, Holzaufkommen, WaldverjüngungThe article is mediating the guiding principles for the cultivation of the Saxon state owned forest. While realising the guiding principles with a target system, it is referring first to questions of forestry in general, like the integration of silviculture in the context of forest management, the further developed content of the term sustainability as well as the difficulties of a multi-functional forestry. Based on actual research, site differentiated restrictions for the use of highly mechanised timber harvest systems are discussed concerning soil protection. The basic direction of the silviculture in the site regions lowland, hilly loess-land and Saxon low mountain range with its influences on yield potenzial, necessary expenditures for the regeneration and the resulting requirement of silvicultural reproduction material is examined on the basis of regional prior functions. Forest development types are representing regionally differentiated guidelines and targets of future forest practice. A description of their basic structure and an overview of the research results of both model regions, Dübener Heide and Lausitz, are given. Keywords: Silviculture, forest cultivation, Forest development type, guiding principle, target system, timber harvest, soil protection, yield potenzial, forest regeneratio

This Is a Recording

At times suggestions have been offered that we agricultural scribes could be replaced by machines, computers, or some other innovation of this technological age