Information Management in the Application of BIM in Construction. The Roles and Functions of the Participants of the Construction Process

AbstractOne of the effective tools to improve the quality of construction, expenditure control and logistics management is the use of BIM-technology in the construction process.A necessary step for the mass application of BIM-technologies in construction is the use of valuation techniques and information models to formulate requirements to them

The Cyclone meteor radar system for routine wind measurements in the lower thermosphere

A new meteor wind radar system called Cyclone was devised to extend and update the meteor radar network and for unattended operation. The Cyclone meteor radar system obtains information from four directions simultaneously. To automate data processing a special digital device was developed. An algorithm used to determine the Doppler shifts was adopted, which makes it possible to eliminate selectivity with respect to slow velocity meteor drifts. The operation of the Cyclone system is described

Effect of ion-plasma treatment on oxidation-reduction processes in lithium-titanium-zinc ferrites

We examined the effect of nitrogen, oxygen and argon plasma on the diffusion-controlled oxidation-reduction processes in lithium-titanium-zinc ferrite ceramics by measuring the activation energy of electrical conductivity in the depth of the sample. The experimental results show that the high-temperature treatment in polycrystalline ferrites by nitrogen or argon ion plasma greatly accelerates the oxidation-reduction processes in ferrites and changes the process direction depending on the partial pressure of oxygen

A novel approach to identify genes that determine grain protein deviation in cereals

Grain yield and protein content were determined for six wheat cultivars grown over 3years at multiple sites and at multiple nitrogen (N) fertilizer inputs. Although grain protein content was negatively correlated with yield, some grain samples had higher protein contents than expected based on their yields, a trait referred to as grain protein deviation (GPD). We used novel statistical approaches to identify gene transcripts significantly related to GPD across environments. The yield and protein content were initially adjusted for nitrogen fertilizer inputs and then adjusted for yield (to remove the negative correlation with protein content), resulting in a parameter termed corrected GPD. Significant genetic variation in corrected GPD was observed for six cultivars grown over a range of environmental conditions (a total of 584 samples). Gene transcript profiles were determined in a subset of 161 samples of developing grain to identify transcripts contributing to GPD. Principal component analysis (PCA), analysis of variance (ANOVA) and means of scores regression (MSR) were used to identify individual principal components (PCs) correlating with GPD alone. Scores of the selected PCs, which were significantly related to GPD and protein content but not to the yield and significantly affected by cultivar, were identified as reflecting a multivariate pattern of gene expression related to genetic variation in GPD. Transcripts with consistent variation along the selected PCs were identified by an approach hereby called one-block means of scores regression (one-block MSR)

High precision beam momentum determination in a synchrotron using a spin resonance method

In order to measure the mass of the eta meson with high accuracy using the d+p -> 3He+eta reaction, the momentum of the circulating deuteron beam in the Cooler Synchrotron COSY of the Forschungszentrum Juelich has to be determined with unprecedented precision. This has been achieved by studying the spin dynamics of the polarized deuteron beam. By depolarizing the beam through the use of an artificially induced spin resonance, it was possible to evaluate its momentum p with a precision of dp/p < 10-4 for a momentum of roughly 3 GeV/c. Different possible sources of error in the application of the spin resonance method are discussed in detail and its possible use during a standard experiment is considered.Comment: 10 pages, 6 figures, 2 tables, published versio

Resonance method of electric-dipole-moment measurements in storage rings

A resonance method of measuring the electric dipole moment (EDM) of nuclei in storage rings is described, based on two new ideas: (1) Oscillating particles' velocities in resonance with spin precession, and (2) alternately producing two sub-beams with different betatron tunes--one sub-beam to amplify and thus make it easier to correct ring imperfections that produce false signals imitating EDM signals, and the other to make the EDM measurement.Comment: 10 pages, 1 figure, accepted for publication in Phys. Rev. Lett., Spring 200

Дослідження оптимального адаптивного закону керування аероплатформою для телекомунікаційних систем

У роботі розглянутий модифікований метод оперативного синтезу оптимального по енергозатратам закону керування просторовим рухом БПЛА легкого класу, які виконують функції висотних аероплатформ для телекомунікаційних систем (ТКС) із застосуванням явної еталонної моделі та функцій Ляпунова.In work it is considered a method of synthesis of the adaptive law of control with application of obvious reference model on a class of flying machines which carry out functions of high-rise aeroplatforms for telecommunication systems. Thus synthesis thus to minimise energy for control.Рассмотрено модифицированный метод оперативного синтеза оптимального по энергозатратам закона управления пространственным движением БПЛА легкого класса, который выполняет функции аэроплатформ для телекоммуникационных систем (ТКС) с использованием эталонной модели и функций Ляпунова