Совершенствование корпоративной культуры в «Four Points by Sheraton»

Выпускная квалификационная работа содержит 71 страниц, 9 рисунок, 6 таблицы, 30 источников Объект исследования - корпоративная культура компании «Four Points by Sheraton». Предмет исследования- правление корпоративной культурой Актуальность работы–необходимость постоянного совершенствования корпоративной культуры компании, чтобы достойно выдержать конкуренцию на рынке. В процессе исследования проводились исследования и анализ В результате исследования разработаны рекомендации по совершенствованию (управлению) корпоративной культуры. Теоретическая и практическая значимость работы Заключается в возможности использования результатов разработок российским гостиничным бизнесом в качестве основы для управления корпоративной культурой компании.Graduate qualification work contains 71 pages, 9 picture, 6 tables, 30 resources. The object of the research is corporate culture of Four Points by Sheraton. The subject of the research is corporate culture management. Topicality of the research is held in necessity for continuous improvement of the company's corporate culture to adequately compete in the market. The analyses were hold during the research Recommendations for improving the company's corporate culture were prepared as the result of the research. Theoretical and practical significance of the research consists in the ability of using attained results for development of the Russian hotel business as the basis for managing company's corporate culture

The technology of radial drilling as a method of improved oil recovery

Currently, the volume of difficult oil in the world is increase and amasses close to 70%. Electric submersible pumps (ESPs) and jack pumps (SRP) used ever more 80% of the wells. Mechanical method of production is not always effective due to the low coefficient of efficiency pump units operating in marginal wells. There is a limit for well production rate below which produce oil is technically impossible or economically unprofitable. Many wells, currently stopped oil production due to unprofitability of oil wells with hard to recover reserves. It leads to their conservation or liquidation. The number of such wells is of these wells is about 25000-30 000. Pressure communication suffers from lack of quality in a "well-formation". It is caused by technological problems in the construction of wells, particularly in the productive intervals. It leads to excessive pressure in the reservoir, and then plugging reservoir mud filtrate or the cement slurry reaches a depth of several meters

Ferromagnetism and non-local correlations in the Hubbard model

We study the possibility and stability of band-ferromagnetism in the single-band Hubbard model for the simple cubic (SC) lattice. A non-local self-energy is derived within a modified perturbation theory. Results for the spectral density and quasiparticle density of states are shown with special attention to the effects of k-dependence. The importance of non-local correlations for the fulfillment of the Mermin-Wagner theorem is our main result. A phase digram showing regions of ferromagnetic order is calculated for the three dimensional lattice. Besides, we show results for the optical conductivity and prove that already the renormalized one-loop contribution to the conductivity cancels the Drude peak exactly in case of a local self-energy which is not anymore true for a non-local self-energy.Comment: 11 pages, 10 figures, accepted for publication in PR

Epidemiologische Studie zum Nachweis ausgewählter Mykobakterien-Spezies bei Wildschweinen in Deutschland

Mykobakterien (M.) sind die Verursacher der Mykobakteriosen und Tuberkulosen bei Mensch und Tier. Ausbrüche der Paratuberkulose und Tuberkulose können große wirtschaftliche Verluste verursachen. Mykobakterien haben ein breites Wirtsspektrum und sind auch auf den Menschen übertragbar. In den letzten Jahren sind zusehends Mykobakterien bei immundefizienten Patienten nachgewiesen worden. In den Industrieländern gilt die Rindertuberkulose überwiegend als getilgt. Dennoch tritt die Rindertuberkulose immer wieder sporadisch auf. Oftmals werden damit Wildtiere in Verbindung gebracht. Das Wildschwein ist eine Wildart, in deren Population in den letzten Jahrzehnten ein enormer Populationszuwachs stattgefunden hat. Diese Arbeit verfolgt das Ziel Wildschweine in Deutschland auf das Vorkommen ausgewählter Mykobakterienspezies zu untersuchen. Die Mesenteriallymphknoten von 428 Wildschweinen aus den verschiedensten Regionen Deutschlands wurden auf Spezies des Mycobacterium avium complex (MAC) und des Mycobacterium tuberculosis complex (MTC) mittels PCR untersucht. Dazu wurden verschiedenste Primerpaare, die entweder bereits in der Literatur beschrieben waren oder selbst konstruiert wurden, auf Spezifität und auf deren analytische Sensitivität getestet. 18% der untersuchten Tiere waren zum Zeitpunkt der Untersuchung mit dem MTC infiziert. 2,8% konnten als Träger von M. tuberculosis identifiziert werden. Jeweils bei 1,2% der erlegten Wildschweine wurde M. bovis/BCG und M. africanum/microti/pinnipedii/caprae nachgewiesen. 0,2% der Probanden wurden PCR-positiv auf Mycobacterium avium ssp. paratuberculosis getestet. Hinsichtlich der Prävalenzen konnten signifikante Unterschiede zwischen den in den verschiedenen Bundesländern gelegenen Revieren aufgezeigt werden. Anhand der statistischen Auswertung konnte kein signifikanter Zusammenhang zwischen MTC-Nachweis und Lebensalter oder Körpergewicht festgestellt werden. Die Wildschweine zeigten keine klinische Erkrankung. Sie wurden vielmehr als reine Träger von MTC identifiziert. Erstmalig wurde in der deutschen Wildschweinepopulation M. tuberculosis nachgewiesen. Dagegen wurden Spezies des MAC molekularbiologisch deutlich seltener, nämlich M. avium ssp. paratuberculosis in nur 0,2% der Fälle und M. avium ssp. avium/hominissuis gar nicht detektiert. Diese Studie liefert erstmals flächendeckende Ergebnisse zum Auftreten einzelner Mykobakterienspezies bei Wildschweinen in Deutschland. Die eingesetzten PCR-Systeme zeigten sich für epidemiologische Studien als zeitsparende und sinnvolle Alternative zur kulturellen Anzucht. So kann die Schlussfolgerung gezogen werden, dass Wildschweine viel öfter als bisher angenommen mit M. tuberculosis infiziert sind, während die Prävalenz von MAP auf einem sehr niedrigen Niveau liegt. Allerdings erlaubt die Untersuchung anhand der einbezogenen Tierzahlen noch keine Aussage darüber, welche epidemiologische Rolle das Wildschwein hinsichtlich der Verbreitung von Mykobakterien insgesamt einnimmt.Mycobacteria (M.) are the initiators of mycobacterial infections and tubers in humans and animals. Outbreaks of paratuberculosis and tuberculosis may cause major economic losses. Mycobacteria have a broad host range and may also occasionally infect humans. Within the last few years, the number of mycobacteria in patients with immunodeficiency is becoming noticeable. In industrialized countries the bovine tuberculosis shall be deemed to be deleted. Nevertheless the bovine tuberculosis occurs sporadically. Often wild animals are associated in this case. The wild boar is a species, of which there was a population explosion during the last decades. This thesis is dedicated to investigate wild boars on the occurrence of selected species of mycobacteria in Germany. The mesenteric lymphnodes of 428 wild boars from the most diverse regions of Germany have been screened on species of the Mycobacterium avium complex (MAC) and the Mycobacterium tuberculosis complex (MTC) by using the method of PCR. For this purpose, various primer pairs, either already described in the literature or custom-designed, were tested for specificity and analytical sensitivity. At the time of the investigation in 18% of the sampled animals DNA of the MTC was detected. 2.8% of these wild boars were identified as carriers for M. tuberculosis. 1.2% as carriers with each M. bovis/BCG and M. africanum/microti/pinnipedii/caprae. 0.2% of the individuals were tested PCR-positive for Mycobacterium avium ssp. paratuberculosis. Results differed significantly between the prevalences in the districts of the different provinces. The results of the statistical evaluation did not show any significant correlation between the presence of MTC-DNA and the age or body weight. None of the wild boars showed any clinically disease. They were however identified as carriers of MTC. M. tuberculosis in German wild boar populations has been proven for the first time. However, using the method of molecular biology, species of the MAC were detected at low frequencies. In particular, M. avium ssp. paratuberculosis was detected in 0.2% of the cases and M. avium ssp. avium/hominissuis was not detected at all. This study provides the first nation-wide results regarding the occurrence of single mycobacteria species among wild boars in Germany. The PCR-systems used for the present epidemiological study, appeared to be a time-saving and reasonable alternative for cultivation. It can be concluded that M. tuberculosis infected wild boars occur more often than previously assumed, while the prevalence of MAP is on a very low level. Because of the relatively low numbers of individuals included in the present study, a clear conclusion towards the overall epidemiological role of wild boars as a reservoir for mycobacteria can not terminatory be concluded

Extended Analysis of Gravitomagnetic Fields in Rotating Superconductors and Superfluids

Applying the Ginzburg-Landau theory including frame dragging effects to the case of a rotating superconductor, we were able to express the absolute value of the gravitomagnetic field involved to explain the Cooper pair mass anomaly previously reported by Tate. Although our analysis predicts large gravitomagnetic fields originated by superconductive gyroscopes, those should not affect the measurement of the Earth gravitomagnetic field by the Gravity Probe-B satellite. However, the hypothesis might be well suited to explain a mechanical momentum exchange phenomena reported for superfluid helium. As a possible explanation for those abnormally large gravitomagnetic fields in quantum materials, the reduced speed of light (and gravity) that was found in the case of Bose-Einstein condensates is analysed

Особливості міжнародної торгівлі ліцензіями

Міжнародна торгівля ліцензіями є основним економічним механізмом міжнародного технологічного обміну і в сучасних умовах набула широкого й швидкого поширення. Міжнародний технологічний обмін і співробітництво є особливо значущими для технологічно орієнтованих підприємств, які зробили ставку на високу конкурентоспроможність продукції, що випускається. У пріоритетних наукомістких галузях виробництва важко знайти відомих у світі виробників конкурентоспроможної продукції, які не використовують чужі чи не пропонують на ринку власні новітні розробки як об’єкти ліцензій

Directed percolation identified as equilibrium pre-transition towards non-equilibrium arrested gel states

The macroscopic properties of gels arise from their slow dynamics and load-bearing network structure, which are exploited by nature and in numerous industrial products. However, a link between these structural and dynamical properties has remained elusive. Here we present confocal microscopy experiments and simulations of gel-forming colloid–polymer mixtures. They reveal that gel formation is preceded by continuous and directed percolation. Both transitions lead to system-spanning networks, but only directed percolation results in extremely slow dynamics, ageing and a shrinking of the gel that resembles synaeresis. Therefore, dynamical arrest in gels is found to be linked to a structural transition, namely directed percolation, which is quantitatively associated with the mean number of bonded neighbours. Directed percolation denotes a universality class of transitions. Our study hence connects gel formation to a well-developed theoretical framework, which now can be exploited to achieve a detailed understanding of arrested gels