Data warehouse stream view update with multiple streaming.

The main objective of data warehousing is to store information representing an integration of base data from single or multiple data sources over an extended period of time. To provide fast access to the data, regardless of the availability of the data source, data warehouses often use materialized views. Materialized views are able to provide aggregation on some attributes to help Decision Support Systems. Updating materialized views in response to modifications in the base data is called materialized view maintenance. In some applications, for example, the stock market and banking systems, the source data is updated so frequently that we can consider them as a continuous stream of data. To keep the materialized view updated with respect to changes in the base tables in a traditional way will cause query response times to increase. This thesis proposes a new view maintenance algorithm for multiple streaming which improves semi-join methods and hash filter methods. Our proposed algorithm is able to update a view which joins two base tables where both of the base tables are in the form of data streams (always changing). By using a timestamp, building updategrams in parallel and by optimizing the joining cost between two data sources it can reduce the query response time or execution time significantly.Dept. of Computer Science. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2005 .A336. Source: Masters Abstracts International, Volume: 44-03, page: 1391. Thesis (M.Sc.)--University of Windsor (Canada), 2005

Citizenship Education and the Prevent Duty in a Muslim-majority state school in London

The Counter-Terrorism and Security Act 2015 introduced the Prevent Duty, which places a legal duty on schools to have due regard in preventing students from radicalisation. The Act also places a legal obligation for schools to promote Fundamental British Values (FBVs) including democracy, the rule of law, individual liberty, and mutual respect and tolerance of different faiths and beliefs. This research investigates how Citizenship Education is organised and taught in a Muslim-majority state school in London in response to the Prevent Duty. This study examines how school leaders and teachers in this school perceive the planning and delivery of citizenship and the promotion of British values across the curriculum. This research also looks at how pupils are responding to issues surrounding Prevent with their understanding and development of citizenship. My findings demonstrate that the school does not offer Citizenship Education as a discrete subject. Instead, Citizenship Education is organised through a combination of the PSHE (personal, social, health and economic) curriculum, Religious Education, Humanities Education, history, and SMSC (spiritual, moral, social and cultural) development. I find that Citizenship Education is given low priority in the school timetable. Although the school promotes British values across the curriculum, all participants in the study disagree with the usage of the term ‘fundamental British values’. Instead, they introduce FBVs to students as universal liberal values. Some teachers are hesitant about what to teach and how to teach them. The school attempts to enhance pupils’ awareness of Islamist and far right extremism, online grooming, and social media. However, some students find themselves subject to scrutiny when they wish to debate on the country’s foreign policy or extremism matters. The Prevent Duty has created a securitisation mentality amongst some staff and potential tension between some teachers and students in the school

Motivational Strategies for Improving Healthy Eating Habits: A Thematic Analysis of a MyPlate Twitter Campaign

This study examined the #MyPlateMyWins Twitter campaign from ChooseMyPlate.gov to understand the motivational strategies used to influence people to change their eating habits. Although studies have explored healthy diet promotion in a variety of contexts, researchers have been slower to explore how Twitter is used in this regard. Applying Uses and Gratification (U&G) theory and using a thematic analysis, this paper found three major strategies used by the campaign: Starting with small changes in health behavior; being a healthy eating role model for kids; and, remaining physically active. These findings should be helpful for organizations or individuals to design effective strategies on social media platforms to advocate people to change their healthy eating behavior. A major limitation of this research is that it used data from only one campaign and one hashtag. Accordingly, I suggested conducting future research using persuasive contents from more than one campaign and hashtag to find the more refined outcome

Dynamique des inondations dans le continuum rivière-estuaire-océan littoral du delta du Bengale : synergie de la modélisation hydrodynamique et de la télédétection spatiale

Le delta du Bengale est le plus vaste au monde. Il est formé par la confluence des trois rivières transfrontalières que sont le Gange, le Brahmapoutre et la Meghna. Des inondations massives frappent régulièrement cette région côtière très densément peuplée, située à seulement quelques mètres au-dessus du niveau moyen de la mer. Elles résultent du puissant cycle saisonnier des débits fluviaux, de la marée océanique très ample, et des cyclones tropicaux fréquents. Au cours des cinquante dernières années, les inondations de la partie littorale du delta ont fait plus de 500'000 victimes. La montée du niveau moyen de la mer ne va faire qu'aggraver la vulnérabilité de cette région où le taux de pauvreté est très élevé. Le long du littoral, les estrans sont les zones alternativement inondées à marée haute et découvertes à marée basse. Leur topographie joue un rôle important dans l'hydrodynamique littorale et dans les submersions qui surviennent lors des évènements extrêmes. En mettant en œuvre une synergie entre l'imagerie par télédétection spatiale de la constellation Sentinel-2 et la modélisation numérique de la marée, nous avons cartographié la topographie de l'estran du delta du Bengale sur une superficie de 1134 km2, avec une résolution de 10 m. Les marées, qui sont le facteur dominant de la variabilité du niveau de la mer côtier, sont apparues comme sensibles à la montée du niveau de la mer. Dans une hiérarchie de scénarios de montée du niveau de la mer représentatifs de l'évolution attendue au 21ème siècle, nous avons conclu que l'amplitude de marée devrait augmenter significativement avec la montée du niveau de la mer, à la fois dans le Sud-Ouest et dans le Sud-Est du delta. Au contraire, l'extension graduelle et massive de la superficie des estrans dans la partie centrale du delta devrait induire une nette atténuation de la marée, dans ces scénarios futurs. La marée joue par ailleurs un rôle central dans l'évolution des surcotes cyloniques. Un exercice de prévision du dernier super-cyclone ayant frappé le delta du Bengale avec notre plate-forme de modélisation hydrodynamique couplée marée-surcote-vagues a révélé la nécessité du couplage dynamique entre ces trois composantes de la submersion, et nous avons pu confirmer le rôle-clé de la topographie côtière dans le succès des prévisions numériques. Grâce à une approche ensembliste basée sur la simulation numérique hydrodynamique de plusieurs milliers de cyclones synthétiques, cohérents tant du point de vue de la physique que de la statistique, nous avons pu conclure qu'il y a à l'heure actuelle de l'ordre de 10% de la population côtière du delta, soit trois millions de personnes, résidant dans la zone exposée à la submersion cinquentennale. La compréhension et la quantification des mécanismes de l'inondation exposés dans cette thèse constituent une information pertinente pour contribuer à l'ingénierie des infrastructures côtières, à la gestion du risque, ainsi qu'à l'élaboration de l'agenda de la recherche en hydrodynamique côtière sur le delta du Bengale.The Bengal delta is the largest in the world. It is formed by the confluence of three transboundary rivers - Ganges, Brahmaputra, and Meghna. Flooding induced by large seasonal continental discharge, strong tide, and frequent deadly storm surges, regularly strikes this densely populated (density > 1000 person/km2), low-lying coastal region (<5 m above mean sea level). In the last five decades, coastal flooding took more than half a million lives. Ongoing global sea level rise (SLR) will only further aggravate the vulnerability of this impoverished region. Along the shoreline, intertidal zones are the first landmass that gets flooded, periodically between each high- and low-tide. Their topography plays an important role in the coastal hydrodynamics and associated flooding during extremes. A synergy between remote sensing from Sentinel-2 constellation and tidal numerical modelling allowed us to map an intertidal area of 1134 km2 and its topography at 10 m resolution. Tides, that prominently drive the variability of coastal sea level, are shown to be sensitive to SLR. In future SLR scenarios in line with the 21st century forecasts, we found that the tidal amplitude will significantly increase with SLR over both the south-western and south-eastern parts of the delta. In contrast, the central part of the delta will potentially experience massive free-flooding of river banks, hereby inducing a decay of the tidal amplitude. Tide plays a vital role in the evolution of storm surges also. Hindcast simulation of a recent super cyclone with our coupled tide-surge-wave model reveals the necessity of the coupling between tide, surge and wave modelling, and confirmed the crucial role played by the coastal topography for effective inundation modelling and forecast. With an ensemble forecast of thousands of physically and statistically consistent synthetic cyclones, we could conclude that about 10% of the coastal population of the Bengal delta, amounting to 3 million people, currently lives exposed to the 50-year return period flooding. The understanding and quantification of the inundation mechanisms extended in this study is expected to help with coastal infrastructure engineering, risk zoning, resource allocation and future adaptation to coastal flood across the Bengal delta

Influence of internal heat source on double-diffusive Soret induced convection in a binary fluid

The neutral convection in a double-diffusive fluid layer subject to the internal heat source (internal heating) and thermodiffusion or also known as Soret effect is studied analytically. The influence of the internal heating is supplied by an internal volumetric source with a uniform distribution. Results show that the presence of internal heating in the binary fluid layer which is fluid layer heated and salted has a significant influence on the neutral convection where increasing the internal heating will destabilize the fluid system. Despite the destabilizing factor, an increase of the Solutal Rayleigh number spikes the critical Rayleigh number and thus ensures greater stability of the system. The instability gets fluctuate depending on values of Soret parameter in the presence of internal heating

PENGARUH EFEKTIVITAS MODAL KERJA, LEVERAGE, LIKUIDITAS, DAN GROWTH TERHADAP PROFITABILITAS

Penelitian ini bertujuan untuk mengetahui Pengaruh Efektivitas Modal Kerja (Working Capital Turnover), Leverage (Debt to Equity Ratio), Likuiditas (Current Ratio) dan Growth (Sales) terhadap Profitabilitas (Retur`n On Equity) pada Bank yang terdaftar di Bursa Efek Indonesia. Sampel penelitian ini diambil dari 10 Bank yang terdaftar di Bursa Efek Indonesia (BEI) periode 2006 sampai dengan 2015. Metode analisis data yang digunakan dalam penelitian ini adalah metode analisis data panel menggunakan eviews 7. Hasil penelitian ini menunjukkan secara parsial (Uji t) variabel WCT tidak mempunyai pengaruh yang signifikan terhadap ROE, Variabel DER tidak mempunyai pengaruh secara signifikan terhadap ROE, variabel CR berpengaruh secara signifikan terhadap ROE, dan variable Growth tidak berpengaruh pengaruh signifikan terhadap ROE. Sedangkan secara simultan WCT, DER, CR, dan Growth secara bersama-sama (Simultan) mempunyai pengaruh yang signifikan terhadap ROE. Adjusted koefisien determinasi atau Adjusted R2 nilai 0.8047, ini menunjukkan semua variable dependen (ROE) dapat dijelaskan dengan WCT, DER, CR, dan Growth sebesar 80,47 %. Sedangkan sisanya 19,53 % merupakan kontribusi variable independen lain di luar model ini

Present Environmental Condition and Its Impact on Livelihood – A Case Study of Two Villages around the University of Barisal

The study was focused mainly on the level of knowledge and current situation on environmental pollution and degradation in the male, female and school going children living in Char Aicha and West Karnakathi villages in Barisal district. Data were collected randomly from 200 families (most of them consist of 6/7 members) by personal observation, focal group discussion and personal interviews during the period from January to June, 2016. The study revealed that majority of the people knew the basics of environmental pollution and degradation through television but they do not apply this in their way of living. On the other hand, about 30% of the people do not know what it is. The data showed that most of the women were not conscious about the devastation of pollution. As household wastes were not managed properly, the open area especially the ponds filled with waste. Pond is one of the prime sources of water for cooking and washing. Tree plantation program, hand washing program, school based awareness program, introduction of cheap water filtration process and discussion program on sustainable agricultural production revealed a positive attitude to manage environment. After these awareness programs, results showed that almost 90% of people follow the prescribed methods. In addition, primary school going children showed keen interest about the program and they play an important role in controlling pollution in the study area by sharing with their parents about the harmful effect of pollution in their regular life. The study will provide baseline information for controlling environmental pollution and degradation in the area. Key Words: Environmental Pollution, Degradation, Awareness program, Kirtonkhola River