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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Bright Patterns as an Ethical Approach to Counteract Dark Patterns : A Closer Investigation of The Ethics of Persuasive Design

Truong, Hellen, Dalbard, Axel January 2022 (has links)
The purpose of this study is to explore the ethical dilemma in design that User Experience (UX) designers encounter in their workplace, consumers’ perception of ethics in bright patterns and dark patterns, and consumers’ decisions between bright patterns and dark patterns. The former aims to understand the reason behind the prevalence of dark patterns, while the latter aims to determine whether bright patterns are a potential ethical approach that designers can adopt in the future. In this study, the methods semi-structured interview and within-subjects experiment with follow-up interview were conducted to gather empirical data. For both methods, a content analysis was selected to analyze the empirical data, which resulted in findings that answered the research questions of this study. The findings show that (1) authority to decide how designers should address ethics in design is more distributed to those investing in a product development project, (2) most ethical issues revolve around challenges of working in an ethical manner rather than bad practices of incorporating ethics in design work, (3) designers adopt one or more ethical approaches to stay ethical and /or address ethical issues that arise in their workplace, (4) some specific bright patterns and dark patterns have no influence on consumer decisions while other specific bright patterns and dark patterns influence consumer decisions, and (5) consumers perceive bright patterns to be more ethical than dark patterns in terms of freedom of choice and transparency.
42

MAPPING COGNITIVE CONSTRUCTS IN MALES AND FEMALES USING ZMET METHODOLOGY: COMPARING MALE AND FEMALE EXPERIENCE WITHIN A CAMPUS MINISTRY ORGANIZATION

Sease, Karen Gail 09 December 2005 (has links)
No description available.
43

Development of a Miniaturized, Wireless-Controlled Incubator Microscope: a Comprehensive Software Solution for Continuous Cell Imaging / Utveckling av ett Miniatyriserat, Trådlöst Kontrollerat Inkubatormikroskop: en Heltäckande Mjukvarulösning för Kontinuerlig Cellavbildning

Hagström, Filip January 2024 (has links)
In life science practices, cell culturing is one of the most common procedures in biological experiments involving the use of microscopes. Cell cultures are typically viewed with a microscope to monitor changes after adjusting the environment for the cells or to intermittently supervise for cellular behavior. However, it is currently not possible to continuously monitor cellular behavior due to the absence of solutions for wireless control of a microscope to image cell cultures while maintaining the environment conducive to cell growth. This thesis provides a miniaturized, cost-effective and versatile microscope down-scaled enough to operate inside incubators. This versatility encompasses the ability to switch between bright-field mode and fluorescence mode, capture images in sequences, save said sequential images to a micro SD-card as well as enabling downloading of individual images to a local file manager. All these features are done through a user interface set up by either a local WiFi or access point from the microscope, making the operation possible through wireless connection. In addition, this thesis is a continuation of a previous thesis that was completed in the spring of 2023. The purpose of this thesis is to improve on the result of the main research question of the previous work. / Inom livsvetenskapliga metoder är cellodling en av de vanligaste procedurerna i biologiska experiment som involverar användning av mikroskop. Cellkulturer ses vanligtvis med ett mikroskop för att bevaka förändringar efter att ha ändrat miljön för cellerna eller för att intermittent övervaka cellulärt beteende. Men det är för närvarande inte möjligt att kontinuerligt övervaka cellulärt beteende på grund av avsaknaden av lösningar för trådlös kontroll av ett mikroskop för att avbilda cellkulturer samtidigt som miljön som främjar celltillväxt bibehålls. Detta examensarbete tillhandahåller ett miniatyriserat, kostnadseffektivt och mångfasetterat mikroskop, som är tillräckligt nedskalad för att fungera i inkubatorer. Denna mångsidighet omfattar möjligheten att växla mellan ljusfältsläge och fluorescensläge, ta bilder i sekvenser, spara nämnda sekventiella bilder på ett micro SD-kort samt ladda ner enskilda bilder till en lokal filhanterare. Alla dessa funktioner görs via ett användargränssnitt som ställs in av antingen ett lokalt WiFi eller accesspunkt från mikroskopet, vilket gör operationen möjlig via trådlös anslutning. Dessutom är detta examensarbete en fortsättning på ett tidigare examensarbete som avslutades våren 2023. Syftet med detta examensarbete är att förbättra resultatet på den huvudsakliga forskningsfrågan i det tidigare arbetet.
44

Deciphering the ontogeny of unmutated and mutated subsets of Chronic Lymphocytic Leukemia

Mohamed, Ahmed January 2019 (has links)
Chronic Lymphocytic Leukemia (CLL) is a type of cancer that affects the B cells of the immune system causing problems in the process of producing antibodies. It can be sorted into mutated and unmutated CLL based on the percentage of somatic mutations in the Immunoglobulin Heavy chain Variable region (IgHV). The B cells of healthy individuals can be sorted into three groups; CD27dull memory B cells (MBCs), CD27bright MBCs and naïve B cells. The hypothesis for the project was that the unmutated CLL subset originates from CD27dull MBCs and the mutated CLL subset originates from CD27bright MBCs. RNA-sequencing data from healthy individuals were acquired from a collaboration partner in Rome and CLL-patients were collected from public datasets available online. Several bioinformatic tools were used to analyze the data. First, the quality of the data files was checked, then adapter sequence from the sequencing process and low-quality bases were removed (trimming). Good quality of the files was confirmed after the trimming. Secondly, these files were mapped against the human reference genome (GRCh38/hg38) for alignment, then the resulted data was used to check for genes that showed differential expression between the different groups. Results were analyzed and visualized using Venn diagrams, Principal Component Analysis (PCA) and heatmap plots and random forest. A list of 85 genes was generated based on the different comparisons and was used in one PCA plot that showed clear separation between the different groups. The SWAP70 gene was analyzed for single nucleotide polymorphisms (SNPs). The study concluded five genes that could be used as biomarkers for CLL and the diagnosis of its subtypes where some of them were discussed in previous studies. Also, the mutated CLL subset showed a similar behavior to the healthy individuals and this could validate the original hypothesis and justifies the better disease prognosis for this subtype.
45

Étude statistique et propriétés énergétiques des petits embrillancements dans la couronne solaire / Statistical study and energetic properties of small brightenings in the solar corona

Joulin, Vincent 12 May 2015 (has links)
Les grands événements de la couronne solaire (comme les flares avec une énergie de l'ordre de 10²³ J) ne suffisent pas à maintenir cette dernière aux températures de plus de un million de degrés qui y sont mesurées. La couronne doit alors être chauffée aux petites échelles, soit de façon continue, soit de façon intermittente. C'est pourquoi afin d'expliquer la température élevée de la couronne, beaucoup d'attention a été accordée aux distributions des énergies dissipées dans les plus petits événements (de l'ordre du mégamètre). En effet, si la distribution en énergie est assez pentue, les plus petits événements, qui sont inobservables, pourraient être les plus gros contributeurs à l'énergie totale dissipée dans la couronne. Des observations précédentes ont montré une large distribution en énergie mais ne permettent pas de conclure sur la valeur précise de la pente, et ces résultats s'appuient sur une estimation peu précise de l'énergie. D'autre part, des études spectroscopiques plus détaillées de structures comme les points brillants coronaux ne fournissent pas assez d'informations statistiques pour calculer leur contribution totale au chauffage. Nous voulons obtenir une meilleure estimation des distributions en énergies dissipées dans les événements de chauffage coronaux en utilisant des données de haute résolution dans plusieurs bandes de l'Extrême Ultra-Violet (EUV).Pour estimer les énergies correspondant aux événements de chauffage et déduire leur contribution, nous détectons des embrillancements dans cinq bandes EUV de l'instrument Atmospheric Imaging Assembly (AIA) à bord du satellite Solar Dynamics Observatory (SDO). Nous combinons les résultats de ces détections et nous utilisons des cartes de température et de mesure d'émission calculées à partir des mêmes observations pour calculer les énergies. Nous obtenons des distributions des surfaces, des durées de vie, des intensités et des énergies (thermique, radiative et de conduction) des événements. Ces distributions sont des lois de puissance, dont les paramètres indiquent que la population d'événements que nous avons observé n'est pas suffisante pour expliquer entièrement les températures coronales. Cependant, plusieurs processus physiques et biais observationnels peuvent être avancés pour expliquer l'énergie manquante. / To explain the high temperature of the corona, much attention has been paid to the distribution of energy in dissipation events. Indeed, if the event energy distribution is steep enough, the smallest, unobservable events could be the largest contributors to the total energy dissipation in the corona. Previous observations have shown a wide distribution of energies but remain inconclusive about the precise slope. Furthermore, these results rely on a very crude estimate of the energy. On the other hand, more detailed spectroscopic studies of structures such as coronal bright points do not provide enough statistical information to derive their total contribution to heating. We aim at getting a better estimate of the distributions of the energy dissipated in coronal heating events using high-resolution, multi-channel Extreme Ultra-Violet (EUV) data. To estimate the energies corresponding to heating events and deduce their distribution, we detect brightenings in five EUV channels of the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO). We combine the results of these detections and we use maps of temperature and emission measure derived from the same observations to compute the energies. We obtain distributions of areas, durations, intensities, and energies (thermal, radiative, and conductive) of events. These distributions are power-laws, but their parameters indicate that a population of events like the ones we observe is not sufficient to fully explain coronal temperatures. However, several processes or observational biases can be advanced to explain the missing energy.
46

Características morfológicas de vermes adultos de Schistosoma mansoni Sambon, 1907 recuperados de camundongos alimentados com dieta hiperlípidíca na fase crônica da infecção esquistossomótica. Análise por microscopia de campo claro e confocal / Morphological characteristics of adult worms of Schistosoma mansoni Sambon, 1907 recovered from mice fed high-fat diet in the chronic phase of schistosome infection. Analysis by bright field microscopy and confocal

Christiane Pezzi Gil de Souza 13 April 2015 (has links)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Estudos em animais experimentais evidenciaram associações significativas entre esquistossomose mansoni e hipercolesterolemia. Estudos in vitro e in vivo já demonstraram que o colesterol é essencial para Schistosoma mansoni, embora este não tenha capacidade de sintetizá-lo. A captação é realizada a partir do ambiente (cultivo ou hospedeiro) através do tegumento. O colesterol está envolvido nos mecanismos de evasão do helminto contra a resposta imunológica, além de poder participar na modulação da sinalização celular e reprodução, estimulando os órgãos reprodutores dos helmintos adultos como observado na fase aguda da infecção experimental. Este trabalho tem como objetivo avaliar se o mesmo fenômeno ocorre na fase crônica. Os helmintos foram recuperados de dez camundongos submetidos à dieta hiperlipídica ou padrão (controle) foram corados pelo carmin cloridrico e montados, individualmente, em lâmina histológica com bálsamo do Canadá. A preparação foi analisada por microscopia de campo claro nos seguintes caracteres: tegumento e o sistema reprodutor nos vermes machos (lobos testiculares, vesícula seminal, lobos testiculares supranumerários e canal ginecóforo) e, nas fêmeas (ovário, oótipo, útero, ovo, glândulas vitelínicas e espermateca). Posteriormente, algumas lâminas foram separadas para visualização pela microscopia confocal dos órgãos do sistema reprodutores acima descritos. Apesar de ter sido observado uma maior quantidade de espermatozoides, uma maior quantidade de oócitos sendo liberados no grupo da dieta, não houve diferença estatística significativa (p>0,05) entre os grupos analisados. Houve um aumento na oogênese como observado na fase aguda. Dessa forma, o colesterol pode estar relacionado com a estimulação na atividade dos órgãos reprodutores dos helmintos adultos na fase crônica da infecção. / Studies in experimental animals showed significant associations between with schistosomiasis and hypercholesterolemia. In vitro and in vivo studies have demonstrated that cholesterol is essential for Schistosoma mansoni, although this is not able to synthesize it. The capture is carried out from the environment (cultivation or host) through the tegument. The capture is carried out from the middle (cultivation or host) through the tegument. Cholesterol is involved in the helminth evasion mechanisms against the immune response, and can participate in the modulation of cell signaling and reproduction of worms by stimulating the reproductive organs of adult worms as observed in the acute phase of experimental infection. This study aims to evaluate whether the same phenomenon occurs in the chronic phase. Helminthes recovered from ten mice subjected to high fat diet or standard (control) were stained with hydrochloric carmine and mounted individually on histological slide with Canada balsam. The preparation was analyzed by bright field microscopy the following characteristics: oral sucker and ventral sucker, tubercles on tegument and the reproductive system in male worms (lobes testicular, seminal vesicles, supernumerary testicular lobes and gynaecophoric canal), and in females (ovary, ootype, uterus, egg, vitelline glands and spermatheca). Subsequently, some slides were separated for confocal microscopy for visualization of the organs of the reproductive system described above. Despite having been observed a higher amount of sperm, a larger number of oocytes are released in the diet group, there was no statistically significant difference (p> 0.05) between the groups. There was an increase in oogenesis as observed in the acute phase. Thus, cholesterol may be related to the stimulation of the activity of the reproductive organs of adult helminths in the chronic phase of infection.
47

Ondelettes, repères et couronne solaire

Jacques, Laurent 21 June 2004 (has links)
Dans cette thèse, nous explorons premièrement la notion de directionnalité lors de la conception de repères d'ondelettes du plan. Cette propriété, qui semble essentielle pour la vision biologique, donne lieu à une meilleure représentation des contours d'objets dans les décompositions d'images utilisant ces repères. Elle génère en outre une redondance supplémentaire qui exploitée à bon escient, permet par exemple de réduire les effets d'un bruit additif (gaussien). Nous montrons également comment cette directionnalité, généralement perçue comme un paramètre figé, peut être adaptée localement aux éléments d'une image. Nous définissons ainsi le concept d'analyse d'images multisélective. Dans ce cadre, des règles de récurrence héritées d'une analyse multirésolution circulaire associent des ondelettes d'une certaine sélectivité angulaire pour générer des ondelettes de plus faible directionnalité jusqu'à l'obtention d'une ondelette totalement isotrope. Dans le cas d'un repère d'ondelettes linéaire, ces différents niveaux de sélectivité ont la possibilité de s'ajuster localement au contenu d'une image. Nous constatons par ailleurs que cette adaptabilité fournit de meilleures reconstructions que les méthodes à sélectivité fixe lors d'approximations non linéaires d'images. Cette thèse traite ensuite du problème de l'analyse de données représentées sur la sphère. Il a été établi précédemment [AV99] que la transformée continue en ondelettes (CWT) s'étend à cet espace par l'emploi d'une dilatation stéréographique respectant la compacité de S2. Dans certain cas, il est utile de réduire la redondance de cette transformée, ne fut ce que pour faciliter le traitement des données dans l'espace multi-échelle généré. Nous étudions par conséquent comment créer des repères sphériques semi-continus, où seule l'échelle est échantillonnée, et totalement discrétisés. Nous tirons parti dans ce dernier cas de grilles sphériques équi-angulaires et des règles de quadrature associées pour obtenir des conditions suffisantes à la reconstruction des fonctions analysées. Les capacités d'analyse et de synthèse de repères d'ondelettes DOG sont également testées sur des exemples de données sphériques. Une dernière partie de ce document est dédiée à l'étude d'un objet physique étonnant : la couronne solaire. Cette couche extérieure du soleil est observée depuis 1996 par l'expérience EIT à bord du satellite SoHO dans différentes longueurs d'onde de l'ultraviolet lointain. La compréhension physique des multiples phénomènes apparaissant dans la couronne solaire passe par le traitement automatique des images EIT. Dans cette tâche, nous nous limitons à deux problèmes particuliers. Nous utilisons premièrement la CWT et sa capacité à analyser la régularité locale d'une image pour gommer les traces laissées par les rayons cosmiques, majoritairement non solaires, sur les enregistrements EIT. Deuxièmement, la couronne solaire contient des éléments de faible taille (<60arcsec) nommés points brillants (ou BPs pur Bright points). Ceux-ci trouvent leur origine dans l'échauffement local du plasma coronal sous l'action du champs magnétique solaire. En abordant une approche similaire à celle développée en [Bij99], nous étudions comment sélectionner et caractériser ces BPS en décomposant une image en ses objets constitutifs. Ces derniers sont issus de tubes de maxima dans la description multi-échelle de l'image, c'est-à-dire d'une généralisation discrète des lignes de maxima de la CWT.
48

Studies of surface treatments of stainless steel for improved corrosion resistance

Wallinder, Daniel January 2001 (has links)
No description available.
49

Studies of surface treatments of stainless steel for improved corrosion resistance

Wallinder, Daniel January 2001 (has links)
No description available.
50

Rhetorical vision and the great commission

Anderson, Amber L. January 1998 (has links)
This study analyzed representative works of John Mott and Bill Bright using Ernest Bormann's method of fantasy theme analysis. The analysis confirmed that Mott and Bright, as leaders of two organizations that encourage college students to engage in evangelism, share an identical rhetorical vision. This vision can be labeled the Great Commission and is identical in thought and content to the words of Christ found in Matthew 28. The shared rhetorical vision encourages members of the rhetorical community to acknowledge the needs of the world and seek to meet those needs by sharing the gospel message of Christ.In addition to a shared rhetorical visions, the works considered in this study also share identical fantasy types: "Fetching Good Out of Evil," and the quest. The fantasy type of the quest has received little interest in other studies. This study suggests that the type might provide rhetorical critics with a useful form for future studies. Several fantasy themes also were found to exist within each artifact. The presence of shared fantasy types and the commonalties that exist between the fantasy themes verifies the presence of the shared rhetorical vision, the Great Commission. / Department of Speech Communication

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