Adaptive Grey-Box Models for Model Predictive Building Control Using the Unscented Kalman Filter

Model predictive control (MPC) for buildings is a promising approach to reduce the energy consumption of buildings while at the same time the thermal user comfort can be improved. The core of this control strategy consists of building models that can describe the thermal behavior of particular zones accurately. Grey-box models are frequently used modeling approaches for control-oriented models, however, these models often have limitations regarding their general applicability. Furthermore, the modeling and identification of models used in MPC still require significant effort and is one of the main obstacles for the actual practical implementation of building predictive control. This paper addresses these issues and presents a framework for the online state and parameter estimation of grey-box models. The results show that (1) this online simultaneous state and parameter estimation highly increases the multi-steps-ahead (up to 48 h) prediction performance, (2) this approach enables the models to adapt to changing environmental conditions and (3) it is possible to use only one pre-defined initial model to describe the thermal behavior of several different zones

Controlling Nonlinear Stochastic Resonance by Harmonic Mixing

We investigate the potential for controlling the effect of nonlinear Stochastic Resonance (SR) by use of harmonic mixing signals for an overdamped Brownian dynamics in a symmetric double well potential. The periodic forcing for harmonic mixing consists of a first signal with a basic frequency $\Omega$ and a second, superimposed signal oscillating at twice the basic frequency $2\Omega$. By variation of the phase difference between these two components and the amplitude ratios of the driving the phenomenon of SR becomes a priori controllable. The harmonic mixing dynamically breaks the symmetry so that the time- and ensemble-average assumes a non-vanishing value. Independently of the noise level, the response can be suppressed by adjusting the phase difference. Nonlinear SR then exhibits resonances at higher harmonics with respect to the applied noise strength and relative phase. The scheme of nonlinear SR via harmonic mixing can be used to steer the nonlinear response and to sensitively measure the internal noise strength. We further demonstrate that the full Fokker-Planck dynamics can be well approximated by a two-state model.Comment: 13 pages, 4 figure

Разработка информационно-программного комплекса «Журнал учета рабочего времени»

Объектом исследования является учет рабочего времени в высших учебных заведениях. Цель работы – упростить и автоматизировать учет рабочих часов сотрудников, работающих посменно, сократить время, которое уходит на заполнение табеля в конце месяца. В результате реализована система учета рабочего времени сотрудников, работающих посменно, упрощающая процесс заполнения табеля учета рабочего времени.The object of this research is working time tracking in university. The main goal - to simplify and automate working time tracking. In result time tracking system was developed. The result is a system of accounting of working time of employees working in shifts, simplifying the process of filling out a timesheet

Supersymmetric Dark Matter

There is almost universal agreement among astronomers that most of the mass in the Universe and most of the mass in the Galactic halo is dark. Many lines of reasoning suggest that the dark matter consists of some new, as yet undiscovered, weakly-interacting massive particle (WIMP). There is now a vast experimental effort being surmounted to detect WIMPS in the halo. The most promising techniques involve direct detection in low-background laboratory detectors and indirect detection through observation of energetic neutrinos from annihilation of WIMPs that have accumulated in the Sun and/or the Earth. Of the many WIMP candidates, perhaps the best motivated and certainly the most theoretically developed is the neutralino, the lightest superpartner in many supersymmetric theories. We review the minimal supersymmetric extension of the Standard Model and discuss prospects for detection of neutralino dark matter. We review in detail how to calculate the cosmological abundance of the neutralino and the event rates for both direct- and indirect-detection schemes, and we discuss astrophysical and laboratory constraints on supersymmetric models. We isolate and clarify the uncertainties from particle physics, nuclear physics, and astrophysics that enter at each step in the calculation. We briefly review other related dark-matter candidates and detection techniques.Comment: The complete postscript file is available at ftp://ftp.npac.syr.edu/pub/users/jungman/susyreview/susyreview.ps.Z The TeX source and figures (plain TeX; macros included) are at ftp://ftp.npac.syr.edu/pub/users/jungman/susyreview/susyreview.tar.Z Full paper NOT submitted to lanl archive: table of contents only. To appear in Physics Report

Public health component in building information modeling

A building information modelling (BIM) conception has established itself as an effective and practical approach to plan, design, construct, and manage buildings and infrastructure. Analysis of the governance literature has shown that the BIM-developed tools do not take fully into account the growing demands from ecology and health fields. In this connection, it is possible to offer an optimal way of adapting such tools to the necessary consideration of the sanitary and hygienic specifications of materials used in construction industry. It is proposed to do it through the introduction of assessments that meet the requirements of national sanitary standards. This approach was demonstrated in the case study of Revit® program

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

The CMS Phase-1 pixel detector upgrade

The CMS detector at the CERN LHC features a silicon pixel detector as its innermost subdetector. The original CMS pixel detector has been replaced with an upgraded pixel system (CMS Phase-1 pixel detector) in the extended year-end technical stop of the LHC in 2016/2017. The upgraded CMS pixel detector is designed to cope with the higher instantaneous luminosities that have been achieved by the LHC after the upgrades to the accelerator during the first long shutdown in 2013–2014. Compared to the original pixel detector, the upgraded detector has a better tracking performance and lower mass with four barrel layers and three endcap disks on each side to provide hit coverage up to an absolute value of pseudorapidity of 2.5. This paper describes the design and construction of the CMS Phase-1 pixel detector as well as its performance from commissioning to early operation in collision data-taking.Peer reviewe

Investigations of methods of determination of human pituitary gonadotropins in urine.

Gonadotropic activity in human pregnancy urine was demonstrated for the first time by Aschheim and Zondek in 1927 by injecting unaltered urine into immature female rats. The early subsequent work was concerned mostly with gonadotropins secreted in large amounts by the human placenta. Pituitary gonadotropins, however, occur in much smaller amounts in human urine. They therefore must be concentrated from urine in order to be demonstrable by bioassay methods. The concentration of urinary extract, in turn, requires detoxification in order to allow the laboratory animals to survive several injections

Cholinergic and Serotonergic Stimulation of Phosphoinositide Hydrolysis Is Decreased in Alzheimer\u27s Disease

Agonist-stimulated phosphoinositide (PPI) hydrolysis is a major signal transduction pathway in brain. These studies investigated neurotransmitter stimulated PPI hydrolysis in postmortem human brain. Preliminary studies using rat brain suggested that moderate postmortem delay has little effect on PPI hydrolysis and that human tissue might be reliably studied for differences in receptor-PLC coupling. Studies in human brain membranes (frontal cortex) indicated that the time course for GTPγS and carbachol/GTPγS-stimulated PPI hydrolysis was linear for at least 20 min. GTPγS-stimulated [3H] inositol phosphate (InsP) formation was enhanced by carbachol (232%) and 5-Hydroxytryptamine (5HT - 147%). SAX-HPLC seperation of [3H] inositol polyphosphates indicated that the major isomer of inositol trisphosphate (InsP3) was Ins(1,4,5)P3, the expected product of PtdIns(4,5)P2 hydrolysis. Ca2+ increased PPI hydrolysis progressively from 100 nM through 50 μM and synergistically enhanced carbachol/GTPγS stimulation. Comparisons of age-matched controls with Alzheimer\u27s patients indicated that GTPγS, carbachol/GTPγS, and 5HT/GTPγS-stimulation of PPI hydrolysis is reduced approximately 50% in membranes prepared from Alzheimer\u27s patients. Ca2+ stimulation of PPI hydrolysis was not different between controls and Alzheimer\u27s patients suggesting that muscarinic cholinergic and serotonergic receptors are uncoupled from PLC in Alzheimer\u27s disease. These studies indicate that there are changes in cholinergic and serotonergic signal transduction in Alzheimer\u27s disease. Further, this method can be used to study signal transduction events in postmortem human brain