379 research outputs found
HandCT: hands-on computational dataset for X-Ray Computed Tomography
No full textHandCT is a computational dataset to train machine-learning models for X-Ray Computed Tomography (CT). It consists of a meshed hand model, of which pose and anatomical properties are computed at run-time from a script. As such, it is an accurate modeling of anatomical phantoms of only 1.35 mB, and reproducibility is ensured using random seeds. It allows the user to have full control over the imaging chain, from projection to reconstruction, and over the X-Ray interaction with the different parts of the model by a simple variable editing. This open-source solution relies on the freeware Blender for the modelling and Python for the computations. The first deals with modelling, rigging and deformations, whilst the later ensures transformations such as scaling, translation, or else forward projection. This dataset can be used to train and evaluate regularisation procedures for low-energy, dual-energy and scarce-view CT.</span
Concept and prototype of a ground handling vehicle management system
No full textAs airports are being identified as the bottleneck of the future ATM system, optimised airport processes have a significant influence on the overall ATM system. Comprehensive research in the field of the surface movement and scheduling of aircraft has led to technology and support systems that are in place at various airports worldwide. In contrast the coordination and optimisation of service vehicles on the aprons were investigated only insignificantly.
Within two projects at the Airport Research Facility Hamburg a concept for managing the process of the luggage transport to and from the aircraft was developed. The concept is based on experiences from A-SMGCS research and implements a complete data link process as a replacement of the actual voice solution. Furthermore a first prototype of a support system was developed, implemented and technically tested at the airport. Live connection to operational systems like A-SMGCS and Airport database enabled the use of real data and first shadow mode trials
HandCT: hands-on computational dataset for X-Ray Computed Tomography
No full textHandCT is a computational dataset to train machine-learning models for X-Ray Computed Tomography (CT). It consists of a meshed hand model, of which pose and anatomical properties are computed at run-time from a script. As such, it is an accurate modeling of anatomical phantoms of only 1.35 mB, and reproducibility is ensured using random seeds. It allows the user to have full control over the imaging chain, from projection to reconstruction, and over the X-Ray interaction with the different parts of the model by a simple variable editing. This open-source solution relies on the freeware Blender for the modelling and Python for the computations. The first deals with modelling, rigging and deformations, whilst the later ensures transformations such as scaling, translation, or else forward projection. This dataset can be used to train and evaluate regularisation procedures for low-energy, dual-energy and scarce-view CT
Loth in exile
No full textLot is nearing the end of his life and therefore could be expected to use the little time left to him to reconcile himself with God with whom he has been in opposition since leaving Sodom. But unlike Job, Lot is not a renegade. He will not end up reconciling himself with his adversary. Nor is he one of the just. That ceased when he went into exile. Lot is the man of polarisation: he goes from being excessively loyal to excessively disloyal. The author describes the crisis experienced by the exile from literary, psychological and philosophical angles especially stressing the dual nature of exile - exile in relation to others and exile in relation to oneself. The theme of the impossible return also becomes the theme of the impossible reconciliation with oneself.Loth est à la fin de sa vie. Il ne lui reste que peu de temps à vivre. Cela devrait l'inciter à chercher
la réconciliation avec Dieu auquel il s'oppose depuis qu'il a quitté Sodome. Mais Loth n'est pas
un renégat comme Job. Il ne se réconciliera pas à la fin avec son adversaire. Il n'est pas non plus
un juste. En s'exilant, il a cessé de l'être. Loth est l'homme de la polarisation : d'excessivement
loyal, il est devenu excessivement déloyal. Dans une perspective littéraire, psychologique et
philosophique, l'auteur évoque la crise qu'éprouve l'exilé. Il s'arrête notamment sur la double
nature de l'exil : exil face aux autres, exil par rapport à soi-même. Le thème de l'impossible
retour devient aussi celui de l'impossible réconciliation avec soi-même
Readers of Joshua Loth Liebman\u27s \u3cem\u3ePeace of Mind\u3c/em\u3e
No full textIn 1946, Simon & Schuster published Rabbi Joshua Loth Liebman\u27s bestselling book Peace of Mind, a self-help manual that explained how psychiatry and religion together could help individuals achieve emotional and spiritual maturity, and ultimately happiness. At the time of its publication, Liebman was a rabbi at Boston\u27s Temple Israel and was well known from his sermons on the NBC radio program Message to Israel, broadcast in Boston and New York City. Significantly, Liebman was, in the words of Matthew S. Hedstrom, the first non-Christian author to reach a mass audience in the United States and Donald Meyer has called Peace of Mind the book first heralding the whole flood of postwar religious bestsellers. 1 The book reached readers on six continents, was on the New York Times bestseller list for 173 weeks and the Publishers Weekly bestseller list for 147 weeks, and, by 1964, went into its thirty-eighth printing.
Design for Sanitation: How does design influence train toilet hygiene?
No full textHumans are travelling, and they may need a toilet on the go. However, they try to avoid this toilet because they perceive it as being dirty.This research project improved the Dutch train toilet's hygiene by reducing physical, mental, and social distances between toilet, dirt, and train travellers.Applied Ergonomics and Desig
Examining price appreciation in foreclosed properties
No full textThesis (S.M. in Real Estate Development)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, Center for Real Estate, 2008.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Includes bibliographical references (leaves 42-43).This thesis examines foreclosure sales of single-family homes in eight communities in the Boston Metro area and the price appreciation from purchase of a foreclosed property through to a subsequent fair market, arms-length sale. The post foreclosure sale price appreciation of the foreclosed properties is compared with price appreciation of fair market, arms length sales to discern the effects of a foreclosure on future price appreciation. RESULTS The magnitude of the price appreciation may be positively influenced, or in part, caused by investment to remediate defects in the property or to cure problems due to endemic disinvestment. On the other hand, it is quite probable there is a negative effect due to intractable problems and or stigma which cannot be cured with money or sweat equity; i.e. socio-economic factors such as changes in crime and poverty rates, macroeconomic conditions, floods or other natural mishaps. Price appreciation, as measured through actual repeat sales, from 8 cities in the Boston Metro area, indicate foreclosed properties appreciate more rapidly than normative, arm's length transactions in those same markets. The results were unclear for sales pairs initiated in 1991-1994, during a relatively flat market. However results are significant with sales pairs initiated in 1995-1997 and 1998-2000, during the real estate recovery and over various holding periods up to five years, using repeat sales data from 1987 through 2007. The Foreclosed Sale Pairs initiated from 1995-2000 dominated the Market Sale Pairs initiated during the same years over the two to five year holding periods.by Eric Loth Jr.S.M.in Real Estate Developmen
Male urination in the train
No full textThis paper presents the results of a study about hygiene in train toilets. The central problem is that with the existing train toilet design and the different groups of users it is impossible to keep the train toilet clean. In a conventional train, it is especially difficult for men to urinate without spilling urine outside the bowl while standing. This, sometimes invisible spray of urine drops on the toilet seat, smells strongly and feels wet. Therefore women and men are reluctant to sit on the toilet seat. It also causes women to hover while urinating and as a consequence they add to the soiling of the seat. To break this negative spiral, the solution for experiencing better hygiene in a train toilet is to divide the train toilet into two separate modules: a urinal for men (standing) and a family seated toilet for others.Design EngineeringIndustrial Design Engineerin
Gas dynamic and acoustic interactions with supersonic free shear layers
No full textExperiments were conducted in a two-dimensional wind tunnel to study dynamics of large-scale structures in a planar compressible mixing layer. High-speed cinematic (300,000 frames/sec) Mie-scattering and shadowgraph techniques were employed to track the evolution of these structures in the mixing layer. A covariance algorithm was developed to obtain quantitative information about the size, shape, orientation and convection speed of these structures in the mixing layer from the digitally processed temporally resolved cinematographic images. The results for the pressure matched flows, show large ellipsoidal eddies in the mixing layer oriented at angles ranging from 25\sp\circ-50\sp\circ, which tilt away from and then towards the streamwise direction as they convect downstream. For the pressure mismatched cases, the eddies showed fluctuations in their angular orientation with time which scaled with the eddy passage frequency. The amplitude of these angular fluctuations was found to be a strong function of the non-dimensional streamwise pressure gradient parameter across the compression/expansion waves. The convection speed of the large-scale structures in pressure matched flows was found to be higher than that predicted by the isentropic relations, whereas for the pressure mismatched cases the convection speeds were found to be lower than the isentropic relation.Finally, the planar mixing layer formed by the Mach 1.67 stream bounded on one side, was passively excited using feedback acoustic waves. This was achieved without the aid of the helical and flapping instability modes present in other unbounded free jet flows. The present mixing augmentation was achieved by the formation of large vortical structures, which resulted in nearly a increase in shear layer thickness. This excitation technique involves judicious placement of acoustically reflective surfaces near (but not within) the shear layer. At least two acoustically reflective surfaces, one on the downstream side and the other acting as the lower wall are necessary for the excitation to occur. It was also confirmed that the excitation was caused by an upstream traveling wave initiated at the downstream surface. A plausible model was developed to explain the aero-acoustic excitation mechanism.Made available in DSpace on 2011-05-07T13:33:27Z (GMT). No. of bitstreams: 2
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