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1

Database replication for disconnected operations with quasi real-time synchronization

Mucha Rafał, Baliś Bartosz, Grigoras Costin, Kitowski Jacek

Computer Science

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2023

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T. 24 (3)

407--426

EN

Database replication is a way to improve system throughput or achieve high availability. In most cases, the use of an active-active replica architecture is efficient and easy to deploy. Such a system has CP properties (from the CAP theorem: consistency, availability, and network-partition tolerance). Creating an AP (available and partition-tolerant) system requires the use of multi-primary replication. Because of the many difficulties in its implementation, this approach is not widely used; however, ALICE’s deployment of CCDB (experiment conditions and calibration database) needs to be an AP system in two locations. This necessity became the inspiration for examining the state-of-the-art methods in this field and testing the available solutions. The tests that were performed evaluated the performance of the chosen replication tools: Bucardo, and EDB Replication Server; these showed that the tested tools could be successfully used for the continuous synchronization of two independent database instances.

2

Profile Physical and Phenolic-Chemical of Kumquat Influenced by the Environment Analyzed in Fresh

Pérez Soraya Mercedes

Journal of Ecological Engineering

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2022

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Vol. 23, nr 2

196--203

EN

Fortunella margarita is an excellent source of acids, sugars and phenolic compounds, the cultivation of which has become popular in Jordan in the last few years. The aim was to observe the quality of the kumquat fruits cultivated in Irbid and the Ghor Valley. Physical properties such as size, density, sphericity, porosity and color were measured. Total titrable acidity (TTA), total soluble solids (TSS), Ascorbic Acid (AA), pH and phenolic compounds were evaluated in the pulp-rind extract. Total phenols (TPC), flavonoids and carotenoids were measured by spectrophotometry at 765, 430 and 470–664 nm, respectively. High porosity (67%), fruit size (37.4 mm) and juice yield (25.5%) were achieved in the Ghor kumquat crop. The high levels of TPC (2039.2 mg GAE/100 g), AA (0.361 mg/ml) and carotenoids (1.15 mg/100 g) registered in this same crop, attribute it better functional and medicinal properties. Moreover, the Ghor cultivation presented better taste, associated with high values of pH (3.47), TSS (5%) and low levels of TTA (1.55%). The high concentration of total carotenoids recorded in the Ghor’s kumquat was associated with the intense and bright orange color of its rind, related with high values of the color coordinates + a, + b and L of the CIELab system. The great porosity of its rind, makes the kumquat a suitable fruit for impregnating with salt or sugar solutions as well as developing new kumquat products with better flavor and nutritional value. The ranges found in the properties of kumquat crops, are attributed to the different temperatures of Ghor and Irbid.

3

Optymalizacja ekstrakcji polifenoli z Mentha spicata różnymi rozpuszczalnikami

Najda Agnieszka, Klimek Kamila, Balant Sebastian, Wrzesińska-Jędrusiak Edyta, Piekarski Wiesław

Przemysł Chemiczny

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2019

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T. 98, nr 8

1286--1289

PL

Mięta zielona jest znaną rośliną przyprawową i leczniczą o potwierdzonej obecności substancji biologicznie aktywnych. Procesy ekstrakcji związków aktywnych z matrycy roślinnej zależą od zastosowanej techniki, surowca i rozpuszczalnika. Wysokiej jakości ekstrakty roślinne są podstawą do produkcji preparatów ziołowych i wyodrębniania składników bioaktywnych. Tendencja do zastępowania syntetycznych przeciwutleniaczy, ze względu na ich toksyczne i potencjalnie nowotworowe działanie, naturalnymi przeciwutleniaczami skłania do zintensyfikowania badań nad antyoksydacyjnym i biologicznym działaniem ekstraktów roślinnych, a także wpływem warunków ekstrakcji na te efekty i na wydajność ekstrakcji. Jako rozpuszczalnik do ekstrakcji mięty zielonej zastosowano wodę, metanol, etanol, acetonitryl i aceton oraz ich 50-proc. roztwory wodne. Określono całkowitą zawartość polifenoli (TPC) i sumę flawonoidów w liofilizowanych ekstraktach. Stwierdzono, że rodzaj rozpuszczalników znacząco wpływa na wydajność odzyskiwania związków bioaktywnych z surowca (liść mięty). Zastosowanie 50-proc. (obj.) wodnych roztworów rozpuszczalników organicznych dało najlepszą wydajność TPC i flawonoidów. W dalszej kolejności znalazł się absolutny metanol i woda. Stosując jako ekstrahenty etanol absolutny, acetonitryl i aceton uzyskano najmniejszą wydajność tych związków. Badania wskazały, że do odzyskiwania TPC i kwasów fenolowych z Mentha spicata korzystne jest stosowanie 50-proc. roztworu acetonu, a do ekstrakcji flawonoidów z tego surowca stosowanie 50-proc. roztworu etanolu.

EN

The dried Mentha spicata leaves were ground in a mill and extd. with H2O, anhyd. organic solvents (MeOH, EtOH, (Me)2CO and CH3CN) and their 50% aq. solns. The extn. was carried out at 35°C for 40 min in the presence of ultrasounds. The extracts contained 3.90–168.0 mg/100 g (in gallic acid equiv.) of phenolic coupds. and 21.3–326.2 mg/100 g (in rutin equiv.) of flavonoids. The highest yield of extn. of phenolic compds. and flavonoids was obtained in the presence of 50% aq. solns. of EtOH and Me2CO. The exts. showed an antioxidant activity as detd. with 1,1-diphenyl- 2-picrylhydrazyl radical.

4

Military aeronautical charts in the past and today

Sobczyński E., Pietruszka J.

Polish Cartographical Review

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2018

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Vol. 50, No. 1

5--30

EN

The history of the development of military aeronautical charts began immediately before the First World War. The first charts created at that time did not differ much from topographic maps. Air planes were fairly slow back then and had a small range of action, which meant that the charts were developed at the scale of 1:200,000. When speed of aircraft increased, it soon turned out that this scale was too large. Therefore, many countries began to create charts with smaller scales: 1:300,000 and 1:500,000. The International Map of the World 1:1,000,000 (IMW) was frequently used for continental flights prior to the outbreak of the Second World War, while 1:3,500,000 and 1:5,000,000 maps were commonly used for intercontinental flights. The Second World War brought a breakthrough in the field of aeronautical chart development, especially after 7 December 1941, when the USA entered into the war. The Americans created more than 6000 map sheets and published more than 100 million copies, which covered all continents. In their cartographic endeavours, they were aided foremost by the Brits. On the other hand, the Third Reich had more than 1,500 officers and about 15,000 soldiers and civil servants involved in the development of maps and other geographic publications during the Second World War. What is more, the Reich employed local cartographers and made use of local source materials in all the countries it occupied. The Germans introduced one new element to the aeronautical charts – the printed reference grid which made it easier to command its air force. The experience gained during the Second World War and local conflicts was for the United States an impulse to undertake work on the standardization of the development of aeronautical charts. Initially, standardization work concerned only aeronautical charts issued by the US, but after the establishment of NATO, standardization began to be applied to all countries entering the Alliance. The currently binding NATO STANAGs (Standardization Agreements) distinguish between operational charts and special low-flight charts. The charts are developed in the WGS-84 coordinate system, where the WGS-84 ellipsoid of rotation is the reference surface. The cylindrical transverse Mercator projection was used for the scale of 1:250,000, while the conformal conic projection was used for other scales. The first aeronautical charts issued at the beginning of the 20th century contained only a dozen or so special symbols concerning charts’ navigational content, whereas currently the number of symbols and abbreviations found on such charts exceeds one hundred. The updating documents are published every 28 days in order to ensure that aeronautical charts remain up-to-date between releases of their subsequent editions. It concerns foremost aerial obstacles and air traffic zones. The aeronautical charts published by NATO have scales between 1:50,000 and 1:500,000 and the printed Military Grid Reference System (MGRS), while the aeronautical charts at scales between 1:250,000 and 1:2,000,000 contain the World Geographic Reference System (GEOREF). Nowadays, modern military air planes are characterised by their exceptional combat capabilities in terms of speed, range and manoeuvrability. Aside from aircraft, contemporary armed forces make increasingly frequent use of aerial robots, drones and unmanned cruise missiles. This is why, there has been a noticeable increase, especially in NATO, in the amount of work devoted to the standardization and development of aeronautical charts, as well as deepening of knowledge of navigation and aeronautical information.

5

Evolutionary Algorithm for Particle Trajectory Reconstruction within Inhomogeneous Magnetic Field in the NA61/SHINE Experiment at CERN SPS

Wyszyński O.

Schedae Informaticae

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2015

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Vol. 24

159--177

EN

In this paper, a novel probabilistic tracking method is proposed. It combines two competing models: (i) a discriminative one for background classification; and (ii) a generative one as a track model. The model competition, along with a combinatorial data association, shows good signal and background noise separation. Furthermore, a stochastic and derivative-free method is used for parameter optimization by means of the Covariance Matrix Adaptation Evolutionary Strategy (CMA-ES). Finally, the applicability and performance of the particle trajectories reconstruction are shown. The algorithm is developed for NA61/SHINE data reconstruction purpose and therefore the method was tested on simulation data of the NA61/SHINE experiment.

6

Rozkład prędkości warstwy smarnej w strefie styku elementów zespołu TPC

Kaźmierczak A., Tkaczyk M., Błasiński T.

Systems : journal of transdisciplinary systems science

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2012

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Vol. 16, nr 1

257-268

PL

Matematyczne modele przepływu płynów kontaktujących się z parą cierną (tłok-pierścień-cylinder) przedstawione w literaturze różnią się sposobami podejścia do zagadnienia. W niniejszej pracy scharakteryzowano sposób analizy warstwy smarnej w strefie styku TPC oparty na modelowaniu numerycznym przepływu z użyciem Metody Objętości Skończonych. Model uwzględnia geometrię w strefie styku TPC.

EN

It is possible to determine the pressure field in the space of the TPC system basing on the approximation of the generalized transport equations for a discrete geometric model using the finite volume method. The precision of the results depends on the account in the form of boundary conditions as well as external conditions. Mathematical models of gas flow in the PRC are described in the literature differ in the way of description and scope of the phenomena taken into account. In this paper approach to determine the flow spaces between the rings considering the effect of the geometry of the PRC system has been proposed. Investigation conducted with aid of CFD (Computational Fluid Dynamics) were aimed on determination of flow resistance within the surface between the piston, rings, and cylinder liner.

7

Transformatory TPC z układem zabezpieczenia bezpiecznik/rozłącznik. Cz. 2

Skipor Sebastian

Nowa Energia

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2008

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nr 5

88--90

8

Preliminary results on direct photon-photon HBT measurements in square root sNN = 62.4 GeV and 200 GeV Au+Au collisions at RHIC

Das D., Lin G., Chattopadhyay S., Chikanian A., Finch E., Nayak T., Panitkin S., Sandweiss J., Suaide A., Zhang H.

Nukleonika

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2006

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Vol. 51,suppl.3

55--58

EN

We present the preliminary results on direct photon interferometry measurements in Au+Au collisions at square root sNN = 62.4 GeV and 200 GeV using the STAR (solenoidal tracker at RHIC) detector. Photons are reconstructed via e+/e- conversions in STAR Time Projection Chamber (TPC) and energy deposited by photons in STAR Barrel Electromagnetic Calorimeter (BEMC). The two-photon correlations are measured using (1) both photons measured with BEMC; (2) one photon from conversions and the other measured with BEMC. Both the methodologies and the possible constraints in the correlation function measurements are discussed.

9

Zależność stanu technicznego układu TPC określonego parametrami diagnostycznymi, a emisją spalin na przykładzie pojazdu Polonez

Piekarski W., Wesołowska-Janczarek M.

Inżynieria Rolnicza

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2005

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R. 9, nr 4

93--102

PL

W systemie eksploatacji pojazdów bardzo istotnym celem diagnostyki technicznej jest wypracowanie metod, a także skutecznych i pewnych procedur badawczych określających stan techniczny silnika. Aktualnie silniki spalinowe są diagnozowane z wykorzystaniem czasochłonnych pomiarów diagnostycznych lub testów diagnostycznych. Zasadniczą wadą stosowanych testerów w diagnostyce silnika jest stwierdzenie, czy pojazd jest sprawny lub niesprawny, a nie ocena stanu technicznego. Należy podkreślić, że bardzo pojemny nośnik informacji, jakim jest skład spalin i zadymienie, nie jest wykorzystywany do oceny zużycia silnika. Publikacje spotykane w literaturze, krajowej i zagranicznej nie ujmują zagadnienia składu spalin w kontekście oceny stanu technicznego, a skupiają się głównie na ocenie poziomu emisji spalin jako czynnika skażenia środowiska. Stąd celem prezentowanej pracy jest określenie wpływu stanu technicznego na emisję spalin.

EN

A very important goal of technical diagnostics is working out method and procedures for the verification of the technical state an engine. Some diagnostic tests or measurements, which require a very long time are now used to diagnose combustion engines. Such study gives the information about the vehicle efficiency but not about its technical condition. Till now the composition of fumes and smoke are not used for estimation of the wear of the engine, in spite of being very voluminous and interesting carrier of information. In many publications the composition of fumes is treated as one of the environment pollution factors, for this reason the level of fumes emission is studied. The aim of this paper was to define the influence of the technical state of engine on exhaust fumes emission.