Current State of WAMS at CEPS, a.s.

Aim of this document is to introduce the WideArea Monitoring System used in the transmission grid ofCzech Republic, to show some examples of unusual states inthe transmission grid detected by the WAMS and to outlinethe future development in this area

Entropic uncertainty relations and entanglement

We discuss the relationship between entropic uncertainty relations and entanglement. We present two methods for deriving separability criteria in terms of entropic uncertainty relations. Especially we show how any entropic uncertainty relation on one part of the system results in a separability condition on the composite system. We investigate the resulting criteria using the Tsallis entropy for two and three qubits.Comment: 8 pages, 3 figures, v2: small change

Direct Probing of Dispersion Quality of ZrO2 Nanoparticles Coated by Polyelectrolyte at Different Concentrated Suspensions.

This study reports useful application of the electrokinetic sonic amplitude (ESA) technique in combination with rheometry and electron microscopy techniques for direct probing the stability of low and high-concentrated zirconia (ZrO2) nanosuspensions in the presence of an alkali-free anionic polyelectrolyte dispersant Dolapix CE64. A comparative study of the electrokinetic characteristics and the rheological behavior of concentrated ZrO2 nanosuspensions has been done. Good agreement was obtained from relationship between the electrokinetic characteristics (zeta potential, ESA signal), viscosity, and its pH dependence for each concentrated ZrO2 nanosuspension with different dispersant concentration in the range of 0.9-1.5 mass%. A nanoscale colloidal hypothesis is proposed to illustrate that the addition of different amounts of dispersant influences on both the stability and the electrokinetic and rheological properties of concentrated ZrO2 nanosuspensions. It is found that an optimum amount of 1.4 mass% dispersant at the inherent pH (>9.2) can be attached fully onto the nanoparticles with sufficient electrosteric dispersion effects, suitable for casting applications. Supplementary scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HR-TEM) analyses followed by colorization effect were taken to verify the visible interaction between dispersant and nanoparticles surfaces. SEM and HR-TEM images proved the existence of visible coverage of dispersant on the surface of individual nanoparticles and showed that thin polyelectrolyte layers were physically bound onto the particles' surfaces. This study will be of interest to materials scientists and engineers who are dealing with dispersion technology, nanoparticle surface treatments, functionalization, characterization, and application of bio/nanoparticle suspensions at various concentrations using different types of polymers

IMPACT OF WORKING SPEED OF MACHINE ON PRODUCED VIBRATIONS THAT AFFECT THE PLANTER BODY

Istraživanje je eksploatacijskog tipa, odnosno mjerenja su obavljena pri izvođenju agrotehničke operacije. Mjerenja proizvedenih vibracija koje utječu na trup rukovatelja po x, y i z osi ispitivana su pri izvođenju agrotehničke operacije sadnje duhana. Prvo mjerenje obavljeno je prvi brzini rada od 1,65 km/h, drugo pri 1,85 km/h, te treće pri brzini od 2,05 km/h. Ispitivanje je obavljeno na privatnoj poljoprivrednoj površini u Ramanovcima. Mjerenje je obavljano tako da su pri svakoj pojedinoj brzini obavljana operacije (1,65/1,85/2,05 km/h) mjerene vibracije za svako pojedino sjedalo, trajanje jednog mjerenja iznosilo je 3 minute, svako mjerenje ponovljeno je 3 puta. Prema izmjerenim vrijednostima tijekom 3 ponavljanja izračunata je srednja vrijednost, koja je dalje upotrebljavana u radu. Sva tri mjerenja obavljena su istoga dana, 5. srpnja 2016. godine, temperatura toga dana iznosila je 30°C, a relativna vlaga 63 %. Zatim su druga tri mjerenja identična već navedenim obavljena 10.lipnja.2017. u sadnji duhana kako bismo dobili što točnije podatke u dva različita mjerenja na različito pripremljenim površinama. Temperatura je iznosila 24 °C, a relativna vlaga 59 %. Sva mjerenja obavljena su u skladu s normama HRN ISO 2631-1 i HRN ISO 2631-4 koje su primjenjive na ljude normalnog zdravlja izložene pravocrtnim vibracijama po njihovoj x, y i z osi. Najbolja metoda u HRN ISO 2631-1 je mjerenje na sjedištu, tj. mjerenja dok je rukovatelj u sjedećem položaju. Sjedište u ovom slučaju predstavlja izravnu dodirnu točku između strukture vozila i rukovatelja. Mjerni uređaj bio je postavljen na dio sjedišta na koji rukovatelj izravno sjeda.The exploration is an exploitation type, the measurements performed during the execution of an agrotechnical operation. Measurements of vibrations produced by the body of the handler by x, and z axis were investigated during the agro-chemical plantation of tobacco planting. The first measurement was 1.65 km / h, the second at 1.85 km / h, and the third at a speed of 2.05 km / h. The survey was conducted on private agricultural land in Ramanovci. The measurement was performed so that for each individual operation speed (1.65 / 1.85 / 2.05 km / h) of the vibration measured for each individual seat, the duration of one measurement was 3 minutes, each measurement being repeated 3 times. According to the measured values during 3 repetitions, the mean value was calculated, which was further used in the work. All three measurements were carried out on the same day, July 5, 2016, and the temperature of that day was 30 ° C and the relative humidity 63%. Next, the other three measurements are identical to those already stated on ,June 10, 2017. In tobacco planting, in order to obtain accurate data in two different measurements on differently prepared surfaces. Temperature is 24 ° C, relative humidity 59%. All measurements were performed in accordance with HRN ISO 2631-1 and HRN ISO 2631-4 norms applicable to normal health people exposed to linear vibrations at their x, y and z axis. The best method in HRN ISO 2631-1 is measurement at the seat.Measurements while the operator is in the sitting position. The seat in this case represents a direct contact point between the vehicle structure and the operator. The measuring device was placed on a seat where the operator is directly seated

Information theoretical properties of Tsallis entropies

A chain rule and a subadditivity for the entropy of type $\beta$, which is one of the nonadditive entropies, were derived by Z.Dar\'oczy. In this paper, we study the further relations among Tsallis type entropies which are typical nonadditive entropies. The chain rule is generalized by showing it for Tsallis relative entropy and the nonadditive entropy. We show some inequalities related to Tsallis entropies, especially the strong subadditivity for Tsallis type entropies and the subadditivity for the nonadditive entropies. The subadditivity and the strong subadditivity naturally lead to define Tsallis mutual entropy and Tsallis conditional mutual entropy, respectively, and then we show again chain rules for Tsallis mutual entropies. We give properties of entropic distances in terms of Tsallis entropies. Finally we show parametrically extended results based on information theory.Comment: The subsection on data processing inequality was deleted. Some typo's were modifie

Lower bounds on entanglement measures from incomplete information

How can we quantify the entanglement in a quantum state, if only the expectation value of a single observable is given? This question is of great interest for the analysis of entanglement in experiments, since in many multiparticle experiments the state is not completely known. We present several results concerning this problem by considering the estimation of entanglement measures via Legendre transforms. First, we present a simple algorithm for the estimation of the concurrence and extensions thereof. Second, we derive an analytical approach to estimate the geometric measure of entanglement, if the diagonal elements of the quantum state in a certain basis are known. Finally, we compare our bounds with exact values and other estimation methods for entanglement measures.Comment: 9 pages, 4 figures, v2: final versio

MAINTENANCE AND REPAIR MACHINES AT “OPG HAVRDA”

Provedeno je istraživanje na „OPG-u Havrda“ koje se bavi isključivo ratarskom proizvodnjom. Cilj dobivenih podataka bio je utvrditi mjere održavanja koje se uobičajeno provode na gospodarstvu i davanje smjernica za poboljšanje istih. Rezultati istraživanja ukazuju na nedovoljnu brigu o strojevima, što je posljedica nedovoljne educiranosti vlasnika o servisno-preventivnom održavanju. Rabljena ulja se ne zbrinjavaju prema zakonu što može imati izravne posljedice za onečišćenje okoliša. Na gospodarstvu se ne obavlja konzervacija strojeva što pospješuje koroziju te se strojevi nepotrebno i neizravno uništavaju.The research was performed at „OPG Havrda" which deals exclusively with crop production. The aim of the obtained data was to determine maintenance measures that are commonly carried on the economy and providing guidelines for improving them. The research results indicate a lack of concern about the machines, as a result of insufficient education of the owner-service preventive maintenance. Used oil is not disposed of according to law, which may have direct consequences for environmental pollution. On the economy is not performing conservation machinery which enhances corrosion and unnecessary and indirectly destroy of machinery