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Köp inuti app - en generationsfråga? : Vad motiverar konsumenter till att utföra köp genom mikrotransaktioner? / In app purchases - A generational question? : What motivates consumers to make purchases through microtransactions?Nyrell, Hugo, Mossenberg, Douglas January 2021 (has links)
Abstrakt Titel: Köp inuti app - En generationsfråga? Författare: Douglas Mossenberg & Hugo Nyrell Handledare: Ulf Aagerup Bakgrund: Sedan slutet av 00-talet har större delen av världen tillgång till höghastighetsinternet och människans digitala närvaro är större än någonsin. Web 2.0 gjorde det möjligt för individer att kommunicera med varandra genom internet och nya affärsmodeller skapades på helt nya marknader. Genombrottet av sociala medier och online-spel gjorde att en ny modell vid namn “mikrotransaktioner” skapades. Genom nyttjande av mikrotransaktioner kunde användare personalisera sig online och skaffa sig en hel uppsjö olika förmåner med hjälp av en liten betalning till antingen spelet eller plattformen som användes. 2021 är mikrotransaktioner en affärsmodell som omsätter miljarder varje år till spel- och systemutvecklare och existerar i nästintill alla populära spel och applikationer. Baserat på denna bakgrund ämnar denna studie att hitta svar på vem det är som köper och varför individer köper objekt genom mikrotransaktioner. Syfte: Syftet med denna studie var att få en bättre förståelse för vad som motiverar människor att konsumera eller inte konsumera med MTX, samt vilka dessa konsumenter är. Frågeställning: Vad motiverar konsumenter till att utföra köp genom mikrotransaktioner? Metod & material: Kvalitativ undersökning med enkät samt 21 semistrukturerade intervjuer. Slutsats: Resultatet visar att det främst är barn och unga vuxna som utför köp genom mikrotransaktioner och att män konsumerar mer än kvinnor. Detta för att män i större utsträckning är engagerade inom spel och applikationer som använder sig av mikrotransaktioner som affärsmodell. De största motivationerna för att konsumera de virtuella artefakterna som erhålls genom mikrotransaktioner är deras funktionella, sociala och emotionella värden som kan identifieras inom spelet eller applikationens kontext. / Abstract Title: In app purchases - A generational question? Authors: Douglas Mossenberg & Hugo Nyrell Supervisor: Ulf Aagerup Background: Since the end of the 00s most parts of the world have access to high-speed internet and humanity’s digital preceanse is at an all time high. Web 2.0 made it possible for individuals to communicate with one another through the internet and new business models came to fruition on completely new markets. The breakthrough of social media and online gaming made it possible for a new model called “microtransactions” to be invented. Through usage of microtransactions users could personalize their online alter egos and attain loads of benefits thanks to a small payment to either the game or the platform being used. In the year of 2021 microtransactions is a business model that brings in billions of dollars each year to developers and exists in nearly all popular games and applications. Based on this background, this thesis intends to find answers on who is buying and why individuals use microtransactions. Purpose: The purpose of this study was to gain a better understanding of what motivates people to consume or not consume through MTX, as well as who these consumers are. Research question: What motivates consumers to make purchases through microtransactions? Methodology: A qualitative study with a survey and 21 semi-structured interviews. Conclusions: The result shows that mainly young adults and children use microtransactions and that there are more male users than female users. This is because men are engaged in games and services that offer microtransactions to a greater extent than women. The biggest motivational factors to consume the virtual artefacts offered through microtransactions are the functional, social and emotional values and benefits identified in the game’s or service’s context.
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Betala för att vinna – en explorativ studie om gamers inställning till mikrotransaktioner i digitala spelPersson, Andreas January 2019 (has links)
Under de senaste tio åren har spelföretag hittat nya sätt att tjäna pengar på spel, såsom att stycka upp dem och sälja innehållet genom flera mindre transaktioner, så kallade mikrotransaktioner, via olika affärsmodeller. Tidigare var det vanligast med fullprisspel, eller premiumspel som de också kallas. Det har också blivit vanligt med motsatsen till sådana spel. Dessa kallas freemium-spel och är gratis att spela eller åtminstone att börja spela. Freemium-spel har blivit den typ av produkt som genererar mest i intäkter av alla affärsmodeller globalt. År 2012 var sådana affärsmodeller bland de minst inkomstbringande. Syftet med denna studie är att undersöka gamers upplevelser av mikrotransaktioner i spel, och därtill att undersöka vad som får dem att göra eller undvika sådana transaktioner. Studien är baserad på fem kvalitativa, semi-strukturerade intervjuer som har gjorts både genom fysiska samtal, röstchatt och vanlig chatt. Studien visar att den enskilt viktigaste faktorn i respondenternas beslut att köpa nedladdningsbart innehåll, däribland genom mikrotransaktioner, avgörs av rent sociala aspekter. Finns inte möjligheten att dela en spelupplevelse med andra människor blir alla former av nedladdningsbart innehåll betydligt mindre intressant för respondenterna. De flesta av respondenterna i denna studie berördes inte nämnvärt av kontakten med mikrotransaktioner såtillvida att de inte tvingades att betala för innehåll genom dem. Om majoriteten av respondenterna fick välja hade de helst sluppit alla former av mikrotransaktioner och i stället köpt spel där allt innehåll ingår från start. Denna rapports angreppssätt är dock explorativt och dess konklusion är således inte en slutgiltig sådan, utan resultatet från undersökningen i rapporten är menat att lägga en grund för vidare forskning inom problemområdet. / Over the past ten years, gaming companies have found new ways of making money from games, such as by cutting them up and selling the content through several smaller transactions, known as microtransactions, through various business models. Previously, it was most common with full-price games, or premium games as they are also called. It has also become common with the opposite form of such games. These are called freemium games and are free to play or at least start playing. Freemium games have become the type of product that generates the most in revenue of all business models globally. In 2012, such business models were among the least income-generating. The purpose of this study is to investigate respondents' experiences of microtransactions in games, and also to investigate what causes them to buy or avoid such transactions. The study is based on five qualitative, semi-structured interviews that have been done both through physical conversations, voice chat and regular chat. The study shows that the single most important factor for the respondents when deciding to buy downloadable content, including through microtransactions, is determined by social aspects. If the possibility of sharing a gaming experience with other people is not available, all forms of downloadable content will be considerably less interesting for the respondents. Most of the respondents in this study were not significantly affected by the contact with microtransactions as long as they were not forced to pay for content through them. If the majority of the respondents had to choose, they would have preferred to avoid all forms of microtransactions and instead buy games where all content is included from the start. However, the approach of this report is explorative and its conclusion is therefore not a definitive one. Instead, the result of the study in this report is intended to lay the groundwork for further research within the problem area.
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Tribological behavior of WC-DLC-WS2 (WCS) nanocomposite coatingsWu, Jianhui 12 October 2004 (has links)
No description available.
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ECR Plasma Deposition Of Carbon - Studies On DLC Coatings And Carbon NanotubesPatra, Santanu Kumar 10 1900 (has links)
Recent developments in the field of nano-structured materials for technological as well as scientific prospective are quite interesting. In this context carbon plays a dominant role. Few examples such as carbon nanotubes (CNTs), fullerene, nanostructured diamond, as well as, amorphous carbon film, particularly, diamond-like carbon (DLC) coating are the areas of today’s research. This thesis deals with ECR plasma deposition of carbon in two different forms, i.e., Diamond-like carbon (DLC) and carbon nanotubes (CNTs) In the case of DLC coatings the chemical vapor deposition (CVD) and sputtering CVD configuration has been used. The carbon nanotubes have been grown using CVD configuration.
DLC films were deposited by ECR-rf CVD mode, as well as, ECR sputtering mode. In case of CVD films, about 0 — 100 Watts rf bias was employed in steps of 20 Watts, corresponding to effective negative self bias voltage of 15 — 440 V. CH4 and C2H2 have been used as source gas for CVD films. Microwave power was optimized at 300 Watts. In case of sputtering, a cylindrical graphite target (diameter 9 cm and length 6 cm) kept at the exit of the Ar plasma was biased with -200 V. Films were deposited on floating substrate (temperature ~100 oC). Films were deposited on Si, quartz, and steel substrates and characterized by FT-IR, Raman, UV-Visible, Photoluminescence spectroscopy (PL), spectroscopic ellipsometry. Nanoindentation was used to evaluate the film’s elastic property. Pin-on-disk measurement was used to study the tribological property of the films. Electrical properties of the films deposited on Si [p-(100), 10 Ω cm] were studied using picoammeter / source measuring instrument by two probe method.
FT-IR analysis showed sp3C-H absorption peak at 2930 cm-1 for the CVD films, while sputtered films did not show any C-H absorption. Raman spectroscopy was used to evaluate bonding aspects as well as hydrogen content of the films. Comparison of sp3C : sp2C among the films was done based on I(D) / I(G) of the Raman peaks, while hydrogen content was estimated based on background slope of the Raman spectra. It was observed that increase in rf bias induces more sp2C while hydrogen content decreases. An optimum substrate bias of 40 Watts was predicted from the Raman spectra. For sputtered films Raman spectra indicated the formation of nanocrystal diamond in a-C matrix. UV-Visible-NIR optical transmission spectroscopy was used to determine the band gap (Tauc), E0, of the films. It showed that increase in rf bias increases the absorption coefficient α. The films deposited from CH4 with a substrate bias of 0 and 20 Watts (i.e., high hydrogen content in the film) followed (hνα)1/2 = const. (hν –E0), while other films hνα = const. (hν –E0) ( h is Plank constant ν is frequency of light). E0 varied from 1.1 — 2.5 eV. It was assumed that for π--π* transition follows root relation while π--σ * transition follows linear relation. Spectroscopic ellipsometry was used to determine optical constants, film thickness, and interface thickness. Deposition rate found out to be ~100 nm / mints for C2H2, ~10 nm / mints for CH4, and ~2.5 nm /mints for sputtered films. Formation of interface layer of thickness about 5 —30 nm due to high energy ion bombardment takes place for the films deposited at 40 Watts rf bias or higher. Band gap and related phenomena was revisited from the data that was obtained from this instrument which reasonably matches with the earlier results. PL experiments were carried out at room temperature using lamp excitation source as well as laser excitation source (457.9 nm wavelength). In case of lamp excitation source any wavelength from 200 —900 nm region can be selected. PL spectra showed that there are two sources of PL signal, one from nanocrystal diamond and other from sp2C phase. To obtain PL signal from diamond UV excitation wavelength was required. This diamond phase is highly efficient emitter as compared to sp2C phase. Based on the closeness of diamond’s optical centre labeling of the peaks was done. For CVD films N3 ( 457 nm), H4 (495 nm), H3 (520 nm), [N-V]0 (~590 nm) optical centers of diamond was observed. For sputtered films [N-V]0 (2.08 eV), H3 (2.38 eV), H4 (2.50 eV), N3 (2.81eV), N3 (2.96 eV), 3.3 eV ( undocumented peak), 5RL ( 4.14 eV) optical centers of diamond as well as band-edge emission (5.01 eV ) was observed.
Nanoindentation technique was used to estimate the elastic property and related phenomena of the films. It shows that the films are having hardness of 5—17 GPa and reduced modulus of 20 —120 GPa depending on the deposition parameters. All the films show highly elastic response at lower load, i.e., at low indentation depth where elastic recovery is 85—95 %. At higher load substrate effect comes into the picture. Further morphology in and around the region was evaluated using scanning probe microscopy (SPM). It was shown that substrate effect comes into picture that is based on film’s thickness as well as its elastic property. Films were further characterized by pin-on-disk experiments. C2H2 based films were used because of high deposition rate. Since 40 Watts, 60 Watts, and 100 Watts films adhere well with steel only on these films tribological test was possible. A hardened bearing-steel was used as substrate and a 2 mm diameter cylindrical pin made of tool steel was use as pin. Studies were carried out with three different loads of 20, 40, and 60 N. Friction coefficient varied from 0.02 — 0.04 and wear rate was found to be 10-6 — 10-9 mm3 / N m. A sputtered film of 0.1 μ m on the top of the CVD film, in many respects, enhances the tribological properties. It was shown that certain amount of wear is required for low friction of DLC.
Electrical characterization of the films deposited from CH4 showed that they are highly insulating with resistivity of 1013 —1011 Ω-cm, and current conduction mechanism has been found to be predominantly space charge limited conduction (SCLC). Similar to the observations of Tauc’s relation, the film deposited with 0 and 20 Watts bias behave differently and followed the relation , where as, all other films exhibited the relation ( α, n are constants). It signifies that for 0 and 20 Watts rf biased films traps are uniformly distributed across the band gap while for others it decreases from the conduction band. For 0 and 20 Watts rf biased films no Ohmic current was observed at a detection level of 10-11 A. 40 Watts and higher rf biased films showed that three distinct regions in the I-V curves; initially Ohmic region, next to it SPLC region, and finally breakdown region. Increase in rf bias causes increase in Ohmic current. Film deposited from C2H2 showed diode-like behavior with higher conduction current limited by resistive control, and the resistivity of the films was ~ 109 — 105 Ω-cm. Difference in resistivity between the films deposited from CH4 and C2H2 was explained by considering the impurities in the source gas resulting in nitrogen doping concentration. Increase in Ohmic current for the CH4 films was explained by assuming the widening of the σ--σ * gap. Similar diode-like behavior was observed with the sputtered film.
The last part of the work deals with the growth mechanism of aligned CNTs and their field emission (FE) properties. Nanotubes were grown at 700 0C on Ni coated (thickness 40 nm, 70 nm, and 150 nm) Si substrate using a mixture of CH4 and H2 gas. Microwave power of 500 Watts was optimized for nanotube growth. Nickel nanoparticle formation mechanism from a continuous Ni film was explained by considering the stress that is generated due to the difference in thermal expansion coefficients of Si and Ni at 700 oC. Though the thicker film such as 150 nm does not form nanoparticle due to stress, hydrogen induced fragmentation of the film due the brittleness of the film even causes formation of finer nanoparticles. A substrate bias in the range 0— 250 V was used to align the nanotubes. Perfectly aligned CNTs were obtained at -250 V substrate bias. The density of the tubes varied from 108 —109 / cm2 while its length was 0.5 — 2 μ m. Due to hydrogen induced fragmentation of the films, 150 nm Ni thick film showed smallest diameter 2 — 5 nm CNTs. 40 nm films showed nanotube diameter of 10 — 30 nm and 150 — 300 nm while 70 nm showed 10 — 30 nm diameter nanotubes. Diameter of the nanotubes was estimated using transmission electron microscopy (TEM). Field emission analysis of these CNTs was done using Fowler-Nordheim (F-N) plot and the investigation revealed that the field emission properties strongly depend on density and aspect ratios. The non-linearity in the F-N plot or current saturation phenomena was explained in terms of change in work function due to heating effect during FE which was pronounced in case of longer nanotube. Suitable efficient cold-cathode emitters for a particular usage (assuming that the variables are applied field and emission current) could be designed from the obtained results. An ammonia gas sensor using thick nonaligned CNTs was realized. For this purpose a thick film of CNTs (~ 0.5 μm) was deposited. This sensor can detect 100 ppm level of ammonia. About 1.5 — 4.5 % change of resistance depending on ammonia concentration (100 —1000 ppm) was observed.
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Compositional depth profiling of diamond-like carbon layers by glow discharge optical emission spectroscopySchubert, C., Hoffmann, V., Kümmel, A., Sinn, J., Härtel, M., Reuther, A., Thomalla, M., Gemming, T., Eckert, J., Leyens, C. 07 January 2020 (has links)
This article describes the compositional depth profiling (CDP) of diamond-like carbon (DLC) layers by Glow Discharge-Optical Emission Spectrometry (GD-OES). The DLC layers were deposited on flat steel samples. Analysis by using a Charge Coupled Device (CCD) GD-OES instrument revealed saturation effects of the carbon lines at 156 nm and 165 nm. Therefore, the application of these lines for CDP of DLC layers is not possible. A third line at 193 nm was not affected by this saturation effect and is therefore a good choice for calibration. A second effect was observed as a non-flat crater in combination with large differences of the sputtering rate factor of the substrate (1.1) and the DLC (0.032) led to an unusual behaviour at the interface between the DLC layer and substrate. Both measurements of the crater shape and of the sputtered coating weight up to the interface and just behind it showed clearly that about 30% of the DLC layer remains at the crater edge, once the crater centre reaches the interface. This was found to be the main reason for the incorrect DLC-layer thickness, if the intersection between the carbon and iron concentration was used as a measure for the end of the DLC layer.
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Plasmaphysikalische Charakterisierung einer magnetfeldgestützten Hohlkathoden-Bogenentladung und ihre Anwendung in der VakuumbeschichtungZimmermann, Burkhard 19 December 2012 (has links)
Die vorliegende Dissertation behandelt Charakterisierung, Modellbildung sowie Anwendung einer magnetfeldgestützten Hohlkathoden-Bogenentladung. Hohlkathoden sind seit den 1960er Jahren Gegenstand grundlagen- sowie anwendungsorientierter Forschung und werden seit 20 Jahren am Fraunhofer-Institut für Elektronenstrahl- und Plasmatechnik für die Anwendung auf dem Gebiet der Vakuumbeschichtung weiterentwickelt. Ziel dieser Arbeit ist es, die technologischen Fortschritte physikalisch zu verstehen und gezielte Weiterentwicklungen für spezifische Einsatzgebiete zu ermöglichen.
In der untersuchten Hohlkathodenbauform ist das aus Tantal bestehende, vom Arbeitsgas Argon durchströmte Kathodenröhrchen koaxial von einer Ringanode sowie von einer Magnetfeldspule umgeben. Die Entladung wird durch Hochspannungspulse gezündet, worauf sich ein diffuser Bogen im Röhrchen (internes Plasma) ausbildet. Das Röhrchen wird von Plasmaionen auf hohe Temperaturen geheizt, die eine thermionische Emission von Elektronen ermöglichen, welche das Plasma speisen. Das technologisch nutzbare externe Plasma wird im Vakuumrezipienten durch Wechselwirkung der Gasteilchen mit Strahlelektronen aus der Kathode erzeugt. Bei starker Reduktion des Arbeitsgasflusses wird die Entladung durch das Magnetfeld der Spule stabilisiert. Der experimentelle Befund, dass dadurch Plasmadichte und -reichweite sowie ggf. die Ladungsträgerenergien im Rezipienten aufgrund des intensiveren Elektronenstrahls wesentlich gesteigert werden können, wird durch ortsaufgelöste Langmuir-Sondenmessung, optische Emissionsspektroskopie und energieaufgelöste Massenspektrometrie ausführlich belegt und nach der Lösung von Strom- und Wärmebilanzgleichungen durch die Verhältnisse im Kathodenröhrchen begründet.
Neben Argon werden auch typische Reaktivgase der Vakuumbeschichtung im Hohlkathodenplasma betrachtet: zum einen Stickstoff und Sauerstoff, die in reaktiven PVD-Prozessen (physikalische Dampfphasenabscheidung) zur Beschichtung mit Oxid- bzw. Nitridschichten zum Einsatz kommen und durch Ionisation, Dissoziation und Anregung im Hohlkathodenplasma verbesserte Schichteigenschaften ermöglichen; zum anderen Azetylen, das bei PECVD (plasmagestützte chemische Dampfphasenabscheidung) von amorphen wasserstoffhaltigen Kohlenstoffschichten z. B. für tribologische oder biokompatible Beschichtungen genutzt wird. Azetylen wird durch Streuprozesse mit Elektronen und Ionen im Plasma aufgespalten, wodurch schichtbildende Spezies erzeugt werden, die am Substrat kondensieren. Durch die Wahl der Plasmaparameter sowie durch abgestimmte Substratbiasspannung und Substratkühlung lassen sich die Beschichtungsrate einstellen sowie polymer-, graphit- oder diamantartige Eigenschaften erzielen. Neben der Plasmadiagnostik mittels energieaufgelöster Massenspektrometrie werden die erzeugten Kohlenstoffschichten vorgestellt und hinsichtlich Härte, Zusammensetzung und Morphologie analysiert. / In the present thesis, characterization, modeling and application of a magnetically enhanced hollow cathode arc discharge are presented. Since the 1960s, hollow cathodes are being studied in basic and applied research. At Fraunhofer Institute for Electron Beam and Plasma Technology, further development concerning the application in vacuum coating technology has been carried out for about twenty years. The present work targets on physically understanding the technological progress in order to enable specific further development and application.
In the investigated hollow cathode device, a ring-shaped anode and a magnetic field coil are arranged coaxially around the tantalum cathode tube, which is flown through by argon as the working gas. The discharge is ignited by high voltage pulses establishing a diffuse arc within the cathode tube (internal plasma). The cathode is being heated by the plasma ions to high temperatures, which leads to thermionic emission of electrons sustaining the plasma. The external plasma in the vacuum chamber, which can be used for technological applications, is generated by collisions of gas atoms with beam electrons originating from the cathode. In the case of strongly reduced working gas flow, the discharge is stabilized by the magnetic field of the coil; the related experimental findings such as significantly increased plasma density and range as well as higher charge carrier energies in the external plasma are extensively proved by spatially resolved Langmuir probe measurements, optical emission spectroscopy, and energy-resolved ion mass spectrometry. Furthermore, the results are correlated to the conditions within the cathode tube by solving the current and heat balance equations.
Besides argon, typical reactive gases used in vacuum coating are examined in the hollow cathode plasma, too. First, nitrogen and oxygen, which are applied in PVD (physical vapor deposition) processes for the deposition of oxide and nitride layers, are ionized, dissociated, and excited by plasma processes. In the case of practical application, this plasma activation leads to improved film properties. Second, acetylene is used as a precursor for PECVD (plasma-enhanced chemical vapor deposition) of amorphous hydrogenated carbon films, e.g. for tribological or biocompatible applications. Acetylene is cracked by electron and ion scattering in the plasma providing film-forming species to be deposited on the substrate. The deposition rate as well as the polymeric, graphitic, or diamond-like properties can be controlled by plasma parameters, a defined substrate bias, and substrate cooling. The hollow cathode-generated acetylene plasma has been characterized by energy-resolved ion mass spectrometry, and the carbon films obtained are analyzed regarding hardness, film composition, and morphology.
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Researches on waterhydraulic motorMajdič, Franc 23 June 2020 (has links)
Tribology has been recognized as a very important discipline in different branches of industry because almost every mechanical system has some moving parts. Due to the relative motion between these different mechanical parts, a variety of contacts are formed, and they are very often lubricated with oil. Environmental protection and ecological awareness are becoming increasingly important, which in turn has resulted in the shift to a low-carbon society, making water more interesting as a possible lubricant. On the one hand, water is less environmentally damaging as a lubricant than oil, but on the other hand, water has very poor lubrication properties, as its viscosity is 100 times lower than the viscosity of oil. These limitations might be overcome by appropriate surface engineering (e.g., diamond-like carbon, DLC). Tribological tests were performed in oil and water for two different contacts. Steel/steel and steel/DLC were investigated. DLC was recognized as a very promising solution, which ensures low friction and low wear. DLC was deposited on a real hydraulic part in an orbital hydraulic motor and tested under real industrial conditions. The overall efficiency of the hydraulic motor was measured.
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Исследование износа и стойкости токарных резцов с алмазоподобным покрытием : магистерская диссертация / Investigation of wear and resistance of cutting tools with a diamond-like coatingКульпина, К. А., Kulpina, K. A. January 2021 (has links)
Магистерская диссертация выполнена на тему: «Исследование износа и стойкости токарных резцов с алмазоподобным покрытием». Расчётно-пояснительная записка содержит 94 листа, 86 рисунков, 6 таблиц, 23 источника, 1 приложение. Объектом исследования данной работы являются токарные резцы с алмазоподобным покрытием. Цель работы – определить наиболее благоприятные условия работы токарных резцов с алмазоподобным покрытием. В результате выполнения работы были проведены исследования износа алмазоподобного покрытия на токарных резцах, построены и проанализированы графики зависимостей этих износов. Проведен анализ полученных результатов и выдвинута гипотеза об еще одной возможной причине разрушения покрытия, в то время как остальные известные причины устранены. Разработаны конструкции токарных резцов и проведено исследование предлагаемой гипотезы. По результатам исследования проведен расчет прочности и подтверждена предлагаемая гипотеза. / The master's dissertation is carried out on the topic: "Investigation of wear and resistance of cutting tools with a diamond-like coating". The settlement and explanatory note contains 94 sheets, 86 figures, 6 tables, 23 sources, 1 attachment. The object of research in this work is diamond-coated lathe tools. The purpose of the work is to determine the most favorable working conditions for lathe tools with a diamond-like coating. In the course of the work, the study of the wear of the diamond-like coating on lathe tools at various cutting modes was carried out, the graphs of the dependences of these wear in time were built and analyzed. The analysis of the results obtained is carried out and a hypothesis is put forward about another possible cause of the destruction of the coating, while the other known causes have been eliminated. To confirm the hypothesis, the designs of lathe tools were developed and a study was carried out. According to the results of the study, the strength calculation was carried out, the proposed hypothesis was confirmed.
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Исследование износа и стойкости концевых фрез с алмазоподобным покрытием : магистерская диссертация / Investigation of wear and resistance of end-milling cutters with a diamond-like coatingСарварова, Я. Э., Sarvarova, Y. E. January 2021 (has links)
Объектом исследования данной работы являются концевые фрезы с алмазоподобным покрытием. Цель работы – определить наиболее благоприятные условия работы концевых фрез с алмазоподобным покрытием. В результате выполнения работы были проведены исследования износа алмазоподобного покрытия на концевых фрезах, построены и проанализированы графики зависимостей этих износов. Проведен анализ полученных результатов и выдвинута гипотеза об еще одной возможной причине разрушения покрытия, в то время как остальные известные причины устранены. Проведено исследование предлагаемой гипотезы. По результатам исследования проведен расчет прочности и подтверждена предлагаемая гипотеза. / The object of research in this work is diamond-coated end-milling cutters. The purpose of the work is to determine the most favorable working conditions for end-milling cutters with a diamond-like coating. In the course of the work, the study of the wear of the diamond-like coating on end-milling cutters at various cutting modes was carried out, the graphs of the dependences of these wear in time were built and analyzed. The analysis of the results obtained is carried out and a hypothesis is put forward about another possible cause of the destruction of the coating, while the other known causes have been eliminated. To confirm the hypothesis a study was carried out. According to the results of the study, the strength calculation was carried out, the proposed hypothesis was confirmed.
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Percepção da equipe multiprofissional sobre o cuidado humanizado nas unidades de terapia intensiva de um hospital escola /Evangelista, Viviane Canhizares. January 2013 (has links)
Orientador: Eliana Mara Braga / Banca: Pedro Marco Karan Barbosa / Banca: Fernanda Paula Cerântola Siqueira / Resumo: A experiência adquirida em contextos de Unidades de Terapia Intensiva (UTIs) desperta questionamentos sobre temas relacionados a ações humanizadas. As UTIs são locais destinados a cuidados críticos, assistidos por uma equipe multiprofissional qualificada, sob as melhores condições possíveis. A responsabilidade da equipe se estende para além das intervenções tecnológicas e farmacológicas focalizadas no paciente, inclui avaliação das necessidades dos familiares, grau de satisfação destes sobre os cuidados realizados, além da preservação da integridade do paciente, acreditando-se que a humanização da assistência auxilia a diminuir os traumas do paciente, da família e norteia os profissionais envolvidos para uma assistência menos mecanizada. O objetivo deste estudo foi compreender o significado do cuidado humanizado para profissionais das Unidades de Terapia Intensiva, a partir da vivência em equipe multiprofissional de um hospital escola. Foi um estudo de campo, exploratório e descritivo, com abordagem qualitativa; utilizou como base teórica a Política Nacional de Humanização (PNH) e metodológica, a Análise de Conteúdo. Os sujeitos foram 24 profissionais da equipe multiprofissional (enfermeiros, fisioterapeutas, psicólogos, nutricionistas, médicos e assistente social) atuantes em UTIs Adulto. A coleta de dados se deu por meio de entrevista semiestruturada, tendo como foco principal a questão norteadora: Como é a sua experiência no desenvolvimento do cuidar humanizado junto a pacientes internados na UTI, atuando em equipe multiprofissional?. Nos resultados deste estudo, os 24 profissionais da equipe multiprofissional, com idade média de 35 anos, sendo a maioria do sexo feminino e religião católica. O tempo médio de formação destes profissionais é de 10 anos, sendo 6 anos o tempo de atuação em unidade crítica e, 15 dos entrevistados, atuam em um único emprego. Na análise das entrevistas, emergiram ... / Abstract: The experience gained in the context of Intensive Care Units (ICUs) awakens questions to topics related to humanized actions. ICUs are places for critical care, assisted by a skilled multidisciplinary team, under the best possible conditions. The team's responsibility extends beyond the technological and pharmacological interventions focused on the patient. It includes assessing the patient's family needs, their degree of satisfaction on the offered care, preserving the integrity of the patient, believing that the humanization of care helps reduce the patient's and family's trauma, and guides the professionals involved to a less mechanized assistance. The aim of this study was to understand the meaning of humanized care among professionals in the Intensive Care Units of a teaching hospital, from the working experience of a multidisciplinary team. This is a field study, with an exploratory and descriptive qualitative approach; the National Humanization Policy (NHP) was used as theoretical framework, and the Content Analysis as methodological framework. The subjects were 24 multidisciplinary team professionals (nurses, physiotherapists, psychologists, nutritionists, doctors and social workers) working in Adult ICUs. Data collection occurred through semi-structured interviews, focusing on the main question: "What is your experience in the development of humanized care with patients admitted to an ICU, working in multidisciplinary team '. In this study, the multidisciplinary team of 24 professionals had average age of 35 years, the majority being female and Catholic. These professionals had an average of 10 years from graduation, 6 years of working in the ICU, and 15 professionals worked in a single job. In the interviews, themes and units of meaning emerged. Theme 1 - Multidisciplinary Team and what facilitates humanized care: focusing in the practice of individualized care; understanding and contextualizing the ... / Mestre
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