125 research outputs found

    Shopping mall information systems and databases and opportunities for Ñ‚heir improvement

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    Nowadays one of the key factors for increasing the efficiency of shopping malls is the intensive and appropriate use of information technology. The automation of activities and processes brings a number of benefits both for the management of the shopping center and for its tenants and consumers. Efficiency needs to be defined, planned, forecast and analyzed in order to be managed successfully. In this regard, the aim of the present study is to examine the current state of information management in shopping malls and to consider the possibilities of implementing modern information technology and databases

    Big data usage in retail industry

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    This article is a review of the essence and application of Big Data and Analytics in the retail industry, including e-commerce. The vast and complex data generated nowadays is in the scope of the Big Data technologies. The computer-based automation of data management and analysis enables business organizations to discover hidden models and useful knowledge which refer to the business processes. The article highlights data-driven and analysis-based approaches to commerce and identifies the leading software solutions and their capabilities. The main aim is to bring out the business benefits of using Big Data and Analytics technologies in the retail industry. In the digital era the speed and breadth of knowledge turnover within the economy increases and the advantages become more accessible for the industries

    СКАНДИНАВСКАЯ ХОДЬБА КАК ЭФФЕКТИВНОЕ СРЕДСТВО РАЗВИТИЯ ВЫНОСЛИВОСТИ У ЖЕНЩИН ЗРЕЛОГО ВОЗРАСТА

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    In the life of modern society, women of mature age play an important role. They perform many socially significant functions. A high level of endurance is necessary for the normal active life of women of mature age. Nordic walking as a cyclic sport contributes to the development of general and special endurance. The purpose of the study is to identify the possibilities of Nordic walking as a means of increasing the endurance of women of mature age. The study involved 15 women aged 35 to 55 years, whose training in health-improving physical culture was carried out on the basis of the use of Nordic walking 2-3 times a week. Testing consisted of 3 km Nordic walking over rough terrain and was carried out 2 times in 6 months. Differences between baseline and endpoints in walking with sticks for 3 km, suggests that Nordic walking is an effective means of developing endurance in women of mature age.В жизни современного общества женщины зрелого возраста играют важную роль. Они выполняют многие социально значимые функции. Высокий уровень выносливости необходим для нормальной активной жизни женщин зрелого возраста. Скандинавская ходьба как циклический вид спорта способствует развитию общей и специальной выносливости. Целью исследования является выявление возможностей скандинавской ходьбы как средства повышения выносливости женщин зрелого возраста. В исследовании приняло участие 15 женщин в возрасте от 35 до 55 лет, у которых тренировки по оздоровительной физической культуре проводились на основе использования скандинавской ходьбы 2-3 раза в неделю. Тестирование заключалось в прохождении 3 км скандинавской ходьбой по пересеченной местности и было проведено 2 раза за 6 месяцев. Различия между исходными и конечными показателями в ходьбе с палками на 3 км, говорит о том, что скандинавская ходьба является эффективным средством развития выносливости у женщин зрелого возраста

    The cyclic stability of rubber-like behaviour in stress-induced martensite aged Ni49Fe18Ga27Co6 (at.%) single crystals

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    In present work, the cyclic stability of the rubber-like behaviour (RLB) was investigated in Ni49Fe18Ga27Co6 (at. %) single crystals. Crystals were aged in the martensite phase at 423 K for 1 h under a compressive stress of 450 MPa, applied along the [110]B2[100]L10-direction. The RLB was induced by a preliminary chemical stabilization of the oriented L10-martensite during stress-induced martensite aging (SIM-aging) and following the reversible reorientation of martensitic variants under a compressive stress applied along the [001]B2[001]L10-direction. The high cyclic stability of the RLB was obtained in 200 loading/unloading cycles, due to the low reorientation stresses of the L10-martensite variants (no higher than 140 MPa) and the high strength properties of the L10-martensite (~1.6 GPa). The irreversible strain after 200 cycles did not exceed 0.6%. An increase in the number of cycles did not lead to the effect of destabilization of the L10-martensite

    Amorphous FeCoCrSiB Ribbons with Tailored Anisotropy for the Development of Magnetic Elements for High Frequency Applications

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    The ferromagnetic resonance (FMR) in the frequency range of 0.5 to 12.5 GHz has been investigated as a function of external magnetic field for rapidly quenched Fe3Co67Cr3Si15B12 amorphous ribbons with different features of the effective magnetic anisotropy. Three states of the ribbons were considered: as-quenched without any treatment; after relaxation annealing without stress at the temperature of 350 °C during 1 h; and after annealing under specific stress of 230 MPa at the temperature of 350 °C during 1 h. For FMR measurements, we adapted a technique previously proposed and tested for the case of microwires. Here, amorphous ribbons were studied using the sample holder based on a commercial SMA connector. On the basis of the measurements of the reflection coefficient S11, the total impedance including its real and imaginary components was determined to be in the frequency range of 0.5 to 12.5 GHz. In order to confirm the validity of the proposed technique, FMR was also measured by the certified cavity perturbation technique using a commercial Bruker spectrometer operating at X-band frequency of 9.39 GHz. As part of the characterization of the ribbons used for microwave measurements, comparative analysis was performed of X-ray diffraction, optical microscopy, transmission electron microscopy, inductive magnetic hysteresis loops, vibrating sample magnetometry, magneto-optical Kerr effect (including magnetic domains) and magnetoimpedance data for of all samples.The research funding from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University Program of Development within the Priority-2030 Program) is gratefully acknowledged. Further funding from University of the Basque Country UPV/EHU Research Groups Funding (GMMM) is similarly gratefully acknowledged

    Elastocaloric effect in aged single crystals of Ni54Fe19Ga27 ferromagnetic shape memory alloy

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    In the present study, the effect of 0-phase dispersed particles on both the L21(B2)-10M/14ML10 martensitic transformations and the elastocaloric effect in aged Ni54Fe19Ga27 single crystals oriented along the [001]-direction was investigated. It was experimentally shown that aging strongly affects the elastocaloric properties of these crystals. The precipitation of semi-coherent 0-phase particles up to 500 nm in size in the crystals aged at 773 K for 1 h leads to a 1.4 times increase in the operating temperature range of the elastocaloric effect up to DTSE = 270 K as compared with the initial as-grown crystals (DTSE = 197 K). The adiabatic cooling values DTad are similar for the as-grown crystals DTad = 10.9 (0.5) K and crystals aged at 773 K DTad = 11.1 (0.5) K. The crystals containing temperature range of DTSE = 255 K with slightly smaller adiabatic cooling DTad below 9.7 (0.5) K. The aged [001]-oriented Ni54Fe19Ga27 single crystals demonstrate high cyclic stability: the number of cycles does not influence the adiabatic cooling values and parameters of loading/unloading curves regardless of the particle size. The ways to improve the elastocaloric cooling parameters and stability of the elastocaloric effect by means of dispersed particles in the NiFeGa ferromagnetic shape memory alloy were discussed.В ст. ошибочно: Nikita S. Suriko

    Gene Co-Expression Network Analysis Identifies Vitamin D-Associated Gene Modules in Adult Normal Rectal Epithelium Following Supplementation

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    Colorectal cancer (CRC) is a common, multifactorial disease. While observational studies have identified an association between lower vitamin D and higher CRC risk, supplementation trials have been inconclusive and the mechanisms by which vitamin D may modulate CRC risk are not well understood. We sought to perform a weighted gene co-expression network analysis (WGCNA) to identify modules present after vitamin D supplementation (when plasma vitamin D level was sufficient) which were absent before supplementation, and then to identify influential genes in those modules. The transcriptome from normal rectal mucosa biopsies of 49 individuals free from CRC were assessed before and after 12 weeks of 3200IU/day vitamin D (Fultium-D3) supplementation using paired-end total RNAseq. While the effects on expression patterns following vitamin D supplementation were subtle, WGCNA identified highly correlated genes forming gene modules. Four of the 17 modules identified in the post-vitamin D network were not preserved in the pre-vitamin D network, shedding new light on the biochemical impact of supplementation. These modules were enriched for GO terms related to the immune system, hormone metabolism, cell growth and RNA metabolism. Across the four treatment-associated modules, 51 hub genes were identified, with enrichment of 40 different transcription factor motifs in promoter regions of those genes, including VDR:RXR. Six of the hub genes were nominally differentially expressed in studies of vitamin D effects on adult normal mucosa organoids: LCN2, HLA-C, AIF1L, PTPRU, PDE4B and IFI6. By taking a gene-correlation network approach, we have described vitamin D induced changes to gene modules in normal human rectal epithelium in vivo, the target tissue from which CRC develops
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