Experimental constraints on fluid-rock reactions during incipient serpentinization of harzburgite
Klein, Frieder
2014-10-20
Search results
47 records were found.
Ford Motor Company (Ford) utilise unique simulation models to represent the
behaviour of their diesel engine assembly lines. The simulation model is a
computerised tool used to support modification decisions that affect the assembly
processes and productivity of the lines. The stakeholders, who use the simulation
outputs, lack complete confidence in them. The doubt appears to stem from a lack of
documentation to prove that the model accurately represents the assembly line.
This research aims to increase confidence in existing simulation models of the engine
assembly lines in Ford. To achieve this, the logic behaviour of the existing Lion
Assembly Line (LAL) is analysed. It is found that the LAL can be decomposed into
repeatable elements by identifying common attributes and inter-element boundaries.
Representational logic diagrams are p...
This thesis deals with the decision support tools for service contracting within the context of Product-Service Systems (PSS). The research contributes to the modelling constructs that can support modellers in developing service contract simulation models in an effective and efficient manner. Overall, the models can assist manufacturers to understand implications of contracting decisions that may either lead to profitable solutions or loss of business opportunities.
PSS is recognised as a survival strategy for many manufacturers to sustain their market competitiveness. It is an emerging manufacturing paradigm that integrates services into products to ensure the required capability or availability of products. This concept is often delivered as long-term service contracts which can be made in separation or together with product acquisit...
Competition in the global economic scenario has led to the use of simulation in
many areas such as manufacturing, health systems, military systems and
transportation. With the importance of simulation in supporting decision making
and operations, model building has been recognised as one of the crucial steps
in simulation studies. However, model building is not as easy as it may seem. It
can be time-consuming and expensive, and requires special training, skills and
experience. This research, therefore, aims to investigate a new method to
rapidly build a simulation model based on the classification of problems in
assembly lines using a cladistics technique and template approach.
Three objectives were established in order to achieve the aim and a four-stage
research programme was developed according to these objectives. The first
stage s...
The drive towards a more globally competitive market has led to an increase in demand
for goods and services on a global scale. As a result of this increase in productivity,
production systems are being designed and redesigned at an increased rate and that they
are becoming more innovative as they progress with time.
The challenge this research attempts to address is how to improve the ability of the UKbased
manufacturing industry to make a more effective decision during manufacturing
systems design/redesign by adopting simulation techniques as both strategic and
operational decision making tools. The aim of this research is to develop a classification
scheme based on cladistics and evolutionary analysis and to use this classification in the
development of a template based modelling library. The research focused on identifying
the exis...
This thesis describes research that has developed a decision model for the analytical
selection of manufacturing best practices.
The competitiveness and growth in the manufacturing sector is critical for Singapore
economy. Design and improvement of manufacturing systems is imperative to
sustain the competitiveness of manufacturing organisations in the country. It is
common for companies to adopt manufacturing best practices in this design process
to emulate the success and performance of their counterparts. However, practices
should be adapted to the competitive environment and strategy of the company to
yield the desired results. Therefore, linkages between best practices and their
associated competitive priorities will present useful guidelines for action to help
manufacturing organisations achieve superior performance.
The research ...
The Small and Medium Enterprises (SMEs) in Singapore face particular
challenges from increasing competition from manufacturers in China, India and
other East Asian countries. For these SMEs, survival and growth depend
critically on defining their own competitive space among other companies in the
manufacturing supply chains. Unfortunately there is little previous research on
Strategic Supply Chain Positioning (SSCP) with most current frameworks and
methodologies being developed from the perspective of the larger multinational
companies (MNCs). Therefore this research has set out to develop a practical
and robust SSCP methodology to support strategic decision making in SMEs in
Singapore.
The research programme began with a review of the existing methodologies and
selecting the most promising methodology for further evaluation. Testing o...
Symbiotic simulation is inspired by symbiosis in biology and is defined as a
close association between a simulation system and a physical system, which is
usually beneficial to at least one of them. Many applications have been
proposed in recent years to implement symbiotic simulation to physical
systems. However, little research has been carried out on implementing
computer-based information systems to symbiotic simulation.
In this research, symbiotic simulation is developed with the integration of
Enterprise Resource Planning (ERP) systems. On the one hand, simulation
models benefit from the relevant manufacturing data which are provided by
ERP systems. On the other hand, ERP systems and physical systems benefit
from the feedback offered by simulation models.
A tube manufacturing shop floor has been selected as a case to demonstrate
...
Manufacturing companies develop multiple production sites for various reasons from
cheaper labour to access to local markets. Expansion of capacity in such a
manufacturing network is a complex decision and requires consideration of multiple
factors. Traditionally, industrial decision makers attempt to minimise the cost of
expansion and, usually as an afterthought, consider soft factors like manpower
availability and logistics connectivity. This approach has gained acceptance as the
research community has focused on developing better mathematical representations of
the problem rather than investigate the larger decision process. A review of the
literature revealed that all existing processes for multi-site capacity expansion
decision fail in this way. Therefore, this research sets out to fulfil the needs of
practitioners by developing a...
This paper reports the work carried out as part of an industrial research
project sponsored by a major telecommunication industry based in the UK. The
main aim of the research was to investigate the extent to which a multimedia-
based information system, developed for shop floor workers, has contributed to
the increased efficiency and productivity Of manufacturing operations. To
achieve this, the work has focused on the design and execution of the evaluation
of the system. Due to the fact that the direct impact of the implementation of
the information system developed was difficult to demonstrate, it was decided to
adopt the system usage as a surrogate of the system's Success and the User
acceptance of the system was evaluated using both the Technology Acceptance
Model and the Task-Technology Fit model. (C) 2009 Elsevier B.V. All right...
As technologies become more complex and competition becomes tougher than ever before, manufacturers in the developed world acknowledge the significance of a competitive strategy in increasing sales to their customers. These strategies not only include offering the products, but also offering service contracts and integrated bundles of products and services, where the supplier is responsible for the required engineering services, typically for a relatively long period of time. This is also known as Product-Service Systems (PSS).
For many commercial and governmental organisations, purchasing PSS remains challenging. Despite the considerable work that has been conducted to investigate and improve the methodological applications of the concept of PSS from PSS providers’ perspective, purchasing PSS positions the PSS customers halfway betwee...
