Coherent Asset Allocation and Diversification in the Presence of Stress Events

We propose a method to integrate frequentist and subjective probabilities in order to obtain a coherent asset allocation in the presence of stress events. Our working assumption is that in normal market asset returns are sufficiently regular for frequentist statistical techniques to identify their joint distribution, once the outliers have been removed from the data set. We also argue, however, that the exceptional events facing the portfolio manager at any point in time are specific to the each individual crisis, and that past regularities cannot be relied upon. We therefore deal with exceptional returns by eliciting subjective probabilities, and by employing the Bayesian net technology to ensure logical consistency. The portfolio allocation is then obtained by utility maximization over the combined (normal plus exceptional) distribution of returns. We show the procedure in detail in a stylized case.Stress tests, asset allocation, Bayesian Networks

Luminescence Effects in Quantum Well Structures in Magnetic and Electric Fields

We have performed experimental studies of the exciton dynamics in coupled quantum wells in electric and magnetic fields. Being composed of an electron and a hole, the excitons are Bose particles and there are theoretical predictions that they should undergo Bose-Einstein condensation (BEC). Coupled quantum wells, a two dimensional system due to the quantum confinement, are particularly suitable for studying BEC of excitons due to the ability to extend excitons' lifetime up to several microseconds. We have found that the disorder in the structure plays an important role in the properties of the exciton luminescence under magnetic field. We were also among the first to observe an unique effect---luminescence rings around the excitation spot that can span over distances of millimeters. We found that this effect is extremely dependent on the specific experimental conditions as well as some characteristic properties of the structure, like doping level, that can facilitate charge separation in two dimensions

Results of Biophysical Research of People Educated by Methodic Vihriom

This paper presents the results of evaluation of possible biophysical methods and approaches for registering of various non-ionizing radiation (NIR) wave types of the human body in the electromagnetic and optical range. Many types of NIR (electromagnetic waves, infrared radiation, thermo radiation, bioluminescence) emitted from the human body were reviewed. In particular the results on of spontaneous biophoton emission and delayed luminescence from the human body are submitted along with infrared thermography (IRT) results. It was shown that 1 cm2 of skin generally emits ~85 photones for 1s. The intensity of biophoton emission ranges from 10−19 to 10−16 W/cm2 (approx. ~1–1000 photons.cm-2.s-1). The specific photon emission from part of the human thumb was detected as a spectrum of various colours with the method of Colour coronal spectral analysis on a device with an electrode made ​​of polyethylene terephthalate (PET hostafan) with applied electric voltage 15 kV, electric impulse duration 10 ms, and electric current frequency 15 kHz. It was established that photons corresponding to a red color emission of visible electromagnetic spectrum have energy at 1.82 еV. The orange color of visible electromagnetic spectrum has energy at 2.05, yellow – 2.14, blue-green (cyan) – 2.43, blue – 2.64, and violet – 3.03 eV. The reliable result measurement norm was at E ≥ 2.53 eV, while the spectral range of the emission was within 380–495 nm and 570–750 nm±5 nm. Also were estimated some important physical characteristics (energy of hydrogen bonds, wetting angle, surface tension) of water by the methods of non-equilibrium energy (NES) and differential non-equilibrium energy (DNES) spectrum of water, that helps understand in general how electromagnetic radiation interacts with water and establish the structural characteristics of water. The report shows the research of the people educated with methodic Vihriom with author Hristo Denev Keywords: Vihriom, infrared radiation, thermo radiation, bioluminescence, color coronal spectral analysis, NES, DNE

USDA‐NRCS Graze Model: An Update of a Static Pasture Balance Tool for Grazing Planners

The USDA‐NRCS Graze Model is a spreadsheet‐based, pasture budgeting digital tool to assist landowners and grazing advisors assess the pasture balance of current and future forage livestock systems. The tool will assess current stocking rates and help to calculate optimal carrying capacity. The model allows the user to see the impact of changing the forage base and grazing efficiency on the ability of a system to be sustainable. The model will accommodate cattle, sheep, goats, and seasonal grazing livestock. Yield information is based on historic, attainable values for Kentucky and the mid‐South region. Livestock intake is calculated on a percent bodyweight basis. This workbook consists of 3 tabs or spreadsheets that require entry (Tabs 2, 3 and 4) and others where data entry is optional or as needed (6, 7 and 9). Cells that are colored green are optional. All other cells are protected and will not permit an entry. Sometimes a yellow comment box pops up when you hover over a cell for data entry. These comments are intended to assist you in deciding the data to be entered. Pressing ‘ESC’ will cause the popup box to disappear

Towards e+Learning or How to Increase the Learning into e-Learning

It is discussed some changes in the traditional e-learning notion on the point of view of R. Koper’s question 'where is the learning in e-learning?’. We put a focus on the conception of learning as a management process and present the project Bulgarian Educational Site (BEST) – a possible answer to Koper’s question. The BEST is a virtual learning environment, based on the following principles: learning is a goal-directed and didactics-managed process; learners may define their own learning objectives, monitor and regulate the learning process; collaborative e-learning is more effective; etc. The BEST is based on two famous e-learning systems (Moodle, LAMS) and Plovdiv e-University (versions 1.0 and 2.0). The paper brings up a mater about the new ‘electronic’ pedagogy and proposes an approach for pedagogical modeling and interpretation of e-learning applied in the BEST

Further developments in the conflation of CFD and building simulation

To provide practitioners with the means to tackle problems related to poor indoor environments, building simulation and computational fluid dynamics can usefully be integrated within a single computational framework. This paper describes the outcomes from a research project sponsored by the European Commission, which furthered the CFD modelling aspects of the ESP-r system. The paper summarises the form of the CFD model and describes the method used to integrate the thermal and flow domains

Theoretical background of the hybrid VπLES method for flows with variable transport properties

The paper presents the theoretical basis for the extension of the V π LES method, originally developed in recent works of the authors for incompressible flows, to flows with variable density and transport properties but without chemical reactions. The method is based on the combination of grid based and grid free computational particle techniques. Large scale motions are modelled on the grid whereas the fine scale ones are modelled by particles. The particles represent the fine scale vorticity, and scalar quantities like e.g., temperature, mass fractions of species, density and mixture fraction. Coupled system of equations is derived for large and fine scales transport