Models of english

The research subject is the process of economic and mathematical modelling of time series characterizing the bitcoin exchange rate volatility, based on the use of artificial neural networks. The purpose of the work is to search and scientifically substantiate the tools and mechanisms for developing prognostic estimates of the crypto currency market development. The paper considers the task of financial time series trend forecasting using the LSTM neural network for supply chain strategies.

5p longtimenosee09 08-04-2024 10 1   Download

The thesis "Stability of some classes of degenerate two-phase difference systems with delay" is to study the stability of degenerate two-phase systems with mixed delay in the direction of variation; Stability and dissipation in finite domain of degenerate 2-D system with variable delay; Evaluation of the gain set and control design for a degenerate 2-D system in the Roesser model with variable delay;... Please refer to it!

120p gaupanda019 21-03-2024 5 1   Download

In line with that research trend, this paper proposes a hybrid algorithm combining particle swarm optimization with the simulated annealing technique (PSO-SA) to optimize the length of intervals to improve forecasting accuracies.

19p vimurdoch 18-09-2023 12 4   Download

This research presents a method for the identification of hazardous situations on the freeways as well as the hazard mitigation system based on the identification. The hazard identification is done using a crash risk probability model and based on the identification, mitigation strategy is employed to reduce the effect of the hazard. For this study, about 18 km long section of Eastern Freeway in Melbourne, Australia is selected as a test bed.

125p runthenight05 01-03-2023 5 3   Download

In this thesis, a numerical model with detailed reaction mechanism which is tailored for studying the behaviour of combustion of natural gas has been introduced and validated with available experimental data. The numerical model attempts to comprehensively simulate the physical conditions (temperature and pressure), equivalent ratio, and fuel dilution and strain rate effect in the laminar flames.

158p runthenight05 01-03-2023 16 3   Download

Magnetic bearing systems have received much attention in the research community for the past decades. Its inherent nonlinearity and open-loop instability present challenges for controller design. This thesis investigates and designs model predictive control (MPC) systems for an experimental Active Magnetic Bearing (AMB) laboratory system. A host-target development environment of real-time control system with hardware in the loop (HIL) is used for implementation of the predictive control systems. In this thesis, both continuous and discrete time model predictive controllers are studied.

172p runthenight05 01-03-2023 9 3   Download

In this thesis, the rolling contact wear of 52100 bearing steel and Over-aged Magnesia-Partially-Stabilised Zirconia (OA-Mg-PSZ) ceramic are examined using a newly developed rolling contact wear test rig. The new wear test rig simulates the system geometry of an un-lubricated hybrid (ceramic and steel) ball bearing. The new wear test rig is versatile in that it allows low cost samples to be utilised resulting in a larger number of samples that can be tested.

165p runthenight05 01-03-2023 8 3   Download

The mobile phone is a ubiquitous portable device capable of generating and displaying narrative content in the form of voice communications, text, images and video. It could be said that hybrid devices such as the mobile phone can create hybrid narratives. It is the aim of this exegesis to outline the theories, concepts and artistic practices that inform the design, production and display of narrative content that utilizes the potential of the mobile phone as a tool for storytelling.

82p runthenight05 01-03-2023 10 4   Download

This research has been undertaken by theoretical and practical investigation via a critique of the historical and contemporary topics surrounding women’s apparel size definitions. This analysis has informed the development of an alternative size model to assist design and production of mass market apparel. There is expectation from both apparel manufacturers and consumers that apparel standards are necessary for the efficient production and distribution of mass market apparel.

121p runthenight05 01-03-2023 7 4   Download

The study determines the predominant hydrogeological controls on salinity distribution and salinization/freshening, proposing conceptual models to explain the different vertical distributions of groundwater salinity at the coastline. An improved understanding of the sources of salinity and the hydrogeological controls will subsequently provide support for the future management of groundwater in the Western Port Basin, and serve as a template for how to unravel complex salinity distributions in coastal aquifers, and their relationships to palaeo- and recent geomorphological histories.

314p runthenight05 01-03-2023 9 4   Download

Since community buildings are a large group of assets managed by local city councils, current research has the potential to identify asset management deficiencies and assist in improving an integrated management model by: Establishing deterioration trends in building components for community buildings; Validating proposed deterioration using case-study data; Developing a database of costs to facilitate optimisation of maintenance; Developing a methodology to integrate deterioration and cost to optimize maintenance requirements.

186p runthenight05 01-03-2023 6 3   Download

In the multi-dimensional model of data warehouses, data drawn from multiple sources is organized into fact tables and dimension tables. Data cubes pre-compute the aggregations of measurements along combinations of dimensions to speed up the processing of Online Analytical Processing (OLAP) queries. When the underlying fact tables or dimension tables change over time, data cubes need to be incrementally maintained to reflect these changes. In this thesis, we study the problem of incrementally maintaining data cubes under slowly changing dimensions.

22p runthenight05 01-03-2023 10 3   Download

The aim of this thesis is to ensure that accurate calibration factors are provided to radiotherapy clinics when moving to the new linac-based primary standard calibrations. Specifically, this thesis quantifies the error introduced when using a calibration factor from the ARPANSA Elekta linac on a Varian high energy platform beam at 6 MV.

102p runthenight05 01-03-2023 7 3   Download

This thesis deals with the finite element simulation of spot welded joint in crash analysis. Spot welding is a very common joining process in the automotive industry. It is cost effective and it provides a very fast production rate of automotive body components. Despite this advantage, spot welds are very susceptible to various types of loading conditions. Therefore they are prone to failure, if not designed properly, during their service life time. Therefore it is very important to understand the behaviour of spot welds and their failure characteristics.

243p runthenight05 01-03-2023 9 4   Download

This study focuses on experimental testing and subsequent numerical analysis of impacted and pre-loaded composite coupons and bonded composite scarf joints under varying impact conditions. A methodology will be developed for the numerical modelling of preloaded impact tests to enable capture of critical failure modes and ultimate failure. The main aim is to validate a modelling strategy that will provide accurate failure characterisation of the tested joints using numerical analysis.

185p runthenight05 01-03-2023 8 3   Download

The aim of this Master of Engineering (MEng) - Aerospace thesis is to study the structural response and failure of aerospace grade composites during exposure to fire. Key aspects of the research are to analyse the thermal and mechanical responses of laminates and sandwich composites in high temperature and fire environments, which result in softening and structural failure. The research is concentrated on carbon/epoxy laminates and sandwich composites, which are the most common composite materials used in aerospace structures.

209p runthenight05 01-03-2023 7 3   Download

The main aims of physical geodesy are to study the shape of the Earth, its gravity field and the geoid which is an equipotential surface closest to the mean sea level. Precise geoid determination has been an important research topic in geodesy and geophysics in the past two decades. Scientists and government agencies all around the world have made great efforts on the development of highaccuracy geoid models.

182p runthenight07 01-03-2023 8 3   Download

In the course of current research the procedure of obtaining of the piecewise linear vibration systems time and frequency responses have been developed. The method is partly analytical and partly numerical and is based on combining of linear solutions of different sections in a cycle of motion. In a row with the method of obtaining of the exact steady state time and frequency response, also it is provided sensitivity analysis of the vibration isolator.

86p runthenight07 01-03-2023 10 3   Download

The purpose of the thesis is described as follows: To develop an independent simulation model for IEEE 803.2az Energy Efficient Ethernet Standards with Active and Idle modes of operations; To design and simulate a traffic source generator with exponentially distributed inter-arrival periods, and forecast the duration of the next idle periods, based in the distribution of packet arrivals; To extend the simulation of Dynamic power management in Access networks with the inclusion of prioritized traffic, which changes the duration of low power modes;…

141p runthenight07 01-03-2023 9 3   Download

One of the limitations of the BDI (Belief-Desire-Intention) model is the lack of any explicit mechanisms within the architecture to be able to learn. In particular, BDI agents do not possess the ability to adapt based on past experience. This is important in dynamic environments as they can change, causing previously successful methods for achieving goals to become inefficient or ineffective.

108p runthenight07 01-03-2023 10 3   Download