Polynomial removal lemma for ordered matchings

We prove that for every ordered matching $H$ on $t$ vertices, if an ordered $n$-vertex graph $G$ is $\varepsilon$-far from being $H$-free, then $G$ contains $\text{poly}(\varepsilon) n^t$ copies of $H$. This proves a special case of a conjecture of Tomon and the first author. We also generalize this statement to uniform hypergraphs

Analysis of Different Slope Features and to Develop Stable Slope Models for Opencast Mine Using FLAC Slope

Slope failure is a common problem in opencast mines which occur because of improper design. So it is important to monitor and analyze the stability of slope on a regular basis. Stability analysis of slopes is associated with the various opencast mining operations throughout the life cycle of the project, and it is very necessary to analyze the slope on a regular basis. Mining activities involve risk at each working stage and slope stability is an integral part of the open pit or opencast mines as the whole operation process depends on the slope stability. In the mining industry, opencast mines give higher production as compare to underground mine. So it is very important to maintain the stability of the slope in a proper way, and the design of slope should be in such a way so that the slope will be able to bear the different activities going on there. Slope stability analysis is used in a wide variety of geotechnical engineering issues, including, but not limited to, the following problems: 1. To Determine the stable cut and fill slopes, 2. To Assess the overall stability of retaining walls, including different stability measures (includes permanent and temporary systems), 3. To assess the overall stability of shallow and deep foundations for structures situated on slopes or over potentially unstable soils, 4. Stability assessment of various landslides (mechanisms of failure, and to determine the design properties through back-analysis), and to develop the mitigation techniques to improve stability. In this present research various software is used for the numerical modelling e.g. – FLAC slope, OASYS to generate the different models to analyze the stability of the slope. Based on different numerical models after using FLAC and OASYS, comparative studies have been carried out for the Factor of safety

Investigating the determinants of commercial banks credit by the Business Sector in Namibia: A Co-integration Analysis

Economists have long recognised that several factors are usually at work, when it comes to the determinants of bank credits in modern economies. Indeed, this subject has recently been reawakened by various scholars in the context of both the developing and developed countries, and Namibia is not an exception to this discussion. This study aims at addressing two key questions. Firstly, the driving factors that push the business sector in Namibia to demand for credit facilities are identified and analysed. Secondly, the neoclassical theory that postulates that there is an inverse and significant relationship between the real interest rate and investment growth is tested for Namibia. The study relied upon co-integration and error correction procedures in carrying out the investigation. Additionally, annual time series data for the period running from 1993 to 2010 was used in the study. The key findings arising from this study are the following. Firstly, the demand for bank credit in Namibia responds more to factors other than real interest rate. Secondly, the neoclassical theory, which postulates that real interest rates have significant dampening impact on credit decisions, does not hold water in the case of Namibia. In light of these findings, specific recommendations are put forward. Finally, future direction regarding further research concerning the issue under investigation is highlighted. Keywords: Co-integration procedures, Annual Time Series Data, Commercial Bank credit, Gross Domestic Product, Neoclassical Theory of Investment Behaviou

Subsea Production System (SPS) Control Modelling

The motivations of this project work are to develop a simulation model for a direct hydraulic control system, find the effect of changing key parameters to the system’s response time, and also to demonstrate Emergency Shut Down (ESD) feature which is a requirement for the subsea production control systems (SPCS). The methodology of this project involves selecting a control system to be studied which is a direct hydraulic control system, gathering technical details and data regarding the control system and components that constitute the control system, and translating the technical details and concepts into acceptable simulation forms in the simulation’s software. This project used SimulationX to simulate the developed model. The developed model consist of a hydraulic power unit, a topside control panel, hydraulic lines, a subsea control module and two actuator valves. The Cadlao oil field has been selected as the case study and simulation models were built according to the Cadlao field’s SPCS. The simulated model is validated by comparing the Cadlao’s performance curves and the acquired results. The simulation is done by varying 3 parameters which are umbilical length, umbilical diameter, and actuator size. Each parameter is tested to study its influences on the signal time and shift time. To find the effect of umbilical length on the signal time, umbilical lengths of 6000 ft, 12000 ft, and 18000 ft have been used. Time taken are 47 s, 110 s, and 195 s respectively. For the simulation using different umbilical diameters, 0.15 inch, 0.35 inch and 0.50 inch have been used. Time taken to fully pressurize the umbilical are 111 s, 39 s and 48 s respectively. For the second part, to find the effect of varying parameters on shift time, three parameters are changed (umbilical length, umbilical diameter and actuator diameter). 6000 ft, 12000 ft and 18000 ft umbilical lengths have been used and the recorded shift times are 13 s, 21 s and 31 s respectively. For the simulation using different umbilical diameters, 0.15 in, 0.35 in and 0.50 in have been used and the recorded shift times are 113 s, 19 s and 13 s respectively. Lastly, sensitivity analysis is done using three different piston diameters. Diameters of 6 in, 9 in and 12 in have been used and the recorded shift times are 28 s, 36 s and 56 s respectively. Lastly, emergency shut-down simulated showed that the actuator is able to return to fail safe condition in 33 s

Fly Ash Particle Reinforced And Mechanical Properties Of AL6061 Graphite B4C Composites

Fly ash particle reinforced with aluminium alloy composite materials used for various industrial applications like automobile, aerospace, aircrafts, substrate in electronics, turbine blades, brake pads, golf clubs and it is also used in home products. Metal matrix composites (MMCs) are increased mechanical properties like strength, yield strength, hardness, impact strength and to improve fracture toughness when compared to unreinforced alloys. The main aim is to fabrication of Al6061/Fly ash, Boron carbide, Graphite, and also Magnesium metal matrix composite by using stir casting process and also study the mechanical properties of the fabricated composite material. Fly ashes with aluminium, composite materials are good mechanical and physical properties for very high temperature, resistant to wear and lowest weight applications. Aluminium composite preparing from liquid phase reaction present a unique microstructure. The each phase is a continuous network penetrated by the network of the other constituent. It is an increased composites containing lowest cost expensive and lowest density reinforcements. The fly is very less expensive and very low density reinforced in solid waste by the product during combustion of coal in thermal power plants. Hence, fly ashes with aluminium composites reinforcement are to overcome the cost expensive for wide applications in automotive ancillaries, aircrafts, turbine blades and also engine applications. In future we add the graphite, boron carbide and magnesium with Al6061 & Fly ash to produce other metal matrix composites.Keywords- Fly ash; Wear resistant; Metal–matrix composites (MMCs); Casting; Particle-reinforcement

LIMES M/R: Parallelization of the LInk discovery framework for MEtric Spaces using the Map/Reduce paradigm

The World Wide Web is the most important information space in the world. With the change of the web during the last decade, today’sWeb 2.0 offers everybody the possibility to easily publish information on the web. For instance, everyone can have his own blog, write Wikipedia articles, publish photos on Flickr or post status messages via Twitter. All these services on the web offer users all around the world the opportunity to interchange information and interconnect themselves with other users. However, the information, as it is usually published today, does not offer enough semantics to be machine-processable. As an example, Wikipedia articles are created using the lightweight Wiki markup language and then published as HyperText Markup Language (HTML) files whose semantics can easily be captured by humans, but not machines

Routing Protocols for Large-Scale Wireless Sensor Networks: A Review

With the advances in micro-electronics, wireless sensor gadgets have been made substantially littler and more coordinated, and large-scale wireless sensor networks (WSNs) based the participation among the noteworthy measure of nodes have turned into a hotly debated issue. "Large-scale" implies for the most part large region or high thickness of a system. As needs be the routing protocols must scale well to the system scope augmentation and node thickness increments. A sensor node is regularly energy-constrained and can't be energized, and in this manner its energy utilization has a very critical impact on the adaptability of the protocol. To the best of our insight, at present the standard strategies to tackle the energy issue in large-scale WSNs are the various leveled routing protocols. In a progressive routing protocol, every one of the nodes are separated into a few gatherings with various task levels. The nodes inside the abnormal state are in charge of data aggregation and administration work, and the low level nodes for detecting their environment and gathering data. The progressive routing protocols are ended up being more energy-proficient than level ones in which every one of the nodes assume a similar part, particularly as far as the data aggregation and the flooding of the control bundles. With concentrate on the various leveled structure, in this paper we give an understanding into routing protocols planned particularly for large-scale WSNs. As per the distinctive goals, the protocols are by and large ordered in light of various criteria, for example, control overhead decrease, energy utilization mitigation and energy adjust. Keeping in mind the end goal to pick up a thorough comprehension of every protocol, we feature their imaginative thoughts, portray the basic standards in detail and break down their points of interest and hindrances. Also a correlation of each routing protocol is led to exhibit the contrasts between the protocols as far as message unpredictability, memory necessities, localization, data aggregation, bunching way and different measurements. At last some open issues in routing protocol plan in large-scale wireless sensor networks and conclusions are proposed