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This paper deals with a calculation method of eddy current losses and temperature rises at the stator end teeth of hydro generators. It can be used for analysing and…
This paper deals with a calculation method of eddy current losses and temperature rises at the stator end teeth of hydro generators. It can be used for analysing and evaluating different design variants when optimising the stator core end portion. The calculation method simulates the three‐dimensional local core end field, but uses only a two‐dimensional calculation model. Amongst all the stator teeth it treats the tooth with the highest axial and radial magnetic flux impact. The paper presents a collection of calculation algorithms of the method and provides some results gained for two different stator core end designs.
The purpose of this paper is to present the results on a model for manufacturing under the constraints and conditions of mass customization environment.
The proposed model is based on manufacturing features and entails the concept of modular design. That is, manufacturing features are identified and analyzed in a way that enables the generation of what is called “manufacturing core”. Manufacturing cores are semi‐finished products that have certain manufacturing features. The core can be used to manufacture a range of products after conducting certain manufacturing processes. Manufacturing cores are generated through two phases of optimization. The first phase is known as product's manufacturing features analysis which includes starting features identification. The second phase is known as manufacturing cores formation that ends with generation of manufacturing cores.
The methodology is implemented on real products (flanges) as a case study. The proposed model for mass customization is compared at make‐to‐stock and make‐to‐order policies in terms of a burden which includes the time and the cost that are required to fulfil a production order. Applying the proposed model of mass customization entails the minimum total burden required.
When the number of generic and variant features increases, an automated feature‐recognition module or sub‐system is required to facilitate the extraction of manufacturing features.
The proposed methodology is used for design of customized product through the application of integrated design for modularity and mass customization approach for production.
The proposed methodology entails development of semi‐finished products based on manufacturing features that can be used for design and manufacturing of a range of products.
The use in aircraft construction of sandwich panels with balsa wood cores gives a saving in weight with very high tensile and compressive strength, which is maintained…
The use in aircraft construction of sandwich panels with balsa wood cores gives a saving in weight with very high tensile and compressive strength, which is maintained over a wide range of temperatures and is uniform in all planar directions. The core is stable under changing temperature conditions, and absorbs little moisture through its exposed faces. Panels made with it can be produced in flat sheets and with single or double curvature, are very stiff, and have a smooth aerodynamic surface. They em be fixed by almost any of the conventional methods.
Grave (English title: Raw), the 2016 feature film debut from French writer/director Julia Ducournau, is a body horror that explores cannibalism in a contemporary setting…
Grave (English title: Raw), the 2016 feature film debut from French writer/director Julia Ducournau, is a body horror that explores cannibalism in a contemporary setting. A vegetarian student, Justine, develops cannibalistic desires after she is forced to eat rabbit kidneys in a hazing ritual at a veterinarian school.
This film portrays the female cannibal as having lost control of her bodily impulses. Justine displays a loss of cognition that results in involuntary actions when confronted with raw flesh. One can observe parallels in this portrayal and that featured in earlier films Dans ma peau (In my Skin, 2002, dir. Marina de Van) and Trouble Every Day (2001, dir. Claire Denis). These two films are identified with the early twenty-first-century French ‘cinema of the body’ trend, which involves disturbing and horrific portrayals of alienated protagonists, sexual debasement and transgressive urges.
In my exploration of the mind/body divide featured in Grave, I’ll argue that the film moves away from portrayals of the cannibal in the two earlier films, as we now observe a female protagonist who is actively engaged in meaningful relationships with others. As such, Justine seeks connection rather than disconnection from those around her, with varying levels of success.
This article presents a study of the link between strategy competence and performance in the context of international market entry. The concept of strategy competence…
This article presents a study of the link between strategy competence and performance in the context of international market entry. The concept of strategy competence encompasses international market entry and business relatedness. It is assumed that efforts of a firm to establish a business in a market where the firm encounters limited entry barriers, and where the local business belongs to the corporate core, lead to high performance in the local business. The empirical findings are based on a study of 173 Swedish ventures in Germany and indicate that limited customer access problems lead to high performance. At the same time, high relatedness between the core business and the local business, in terms of similar requirements for management skills and similar brand recognition, leads to high performance of the local business. In light of the findings, management would be well advised to leverage key management skills such as brand management from the core to the local business and to continuously evaluate ways to achieve customer access.
Due to linear structure, linear switched flux permanent magnet machines (LSFPMMs) also may have odd pole primary, such as 9, 15, 21, etc., without unbalanced magnetic…
Due to linear structure, linear switched flux permanent magnet machines (LSFPMMs) also may have odd pole primary, such as 9, 15, 21, etc., without unbalanced magnetic force in equivalent rotary machines. The paper aims to discuss these issues.
In order to increase the thrust force density, the influence of some major design parameters, including split ratio, PM thickness, primary slot width and secondary pole width, are investigated by finite element analysis. For reducing the thrust force ripple under on-load condition, the end auxiliary teeth are adopted and their positions are also optimized.
This novel 9/10 primary/secondary poles LSFPMM has high average thrust force and low thrust force ripple by optimization. The results demonstrate that the odd pole primary may be a good candidate for long-stroke linear direct drive application.
A novel 9/10 primary/secondary poles linear switched flux permanent magnet machine is developed in this paper. The similar conclusions could be obtained for other LSFPMMs with odd pole primary.
In a rotary wing aircraft having a fuselage and two load‐carrying rotors turning in opposite directions and having rotor blades of aerofoil cross section, means for controlling the directional heading of the fuselage comprising spoilers on said rotor blades and movable between an active position in which they increase the drag of the respective rotors on which they are provided and an inactive position in which they do not materially increase said drag, said spoilers being located not less than 30 per cent of the length of the blade from the tip of the blade, and pilot‐controlled operating mechanism for moving said spoilers between active and inactive position, said operating mechanism including a movable pilot‐controlled member and being connected to said spoilers to move said spoilers of one rotor to active position by movement of the pilot‐controlled member in one direction and to move said spoilers of the other rotor to active position by movement of the pilot‐controlled member in the opposite direction.
Moi University must successfully manage change in order to improve institutional performance, ease of communication and the management of knowledge and information. To…
Moi University must successfully manage change in order to improve institutional performance, ease of communication and the management of knowledge and information. To this end, information technology (IT) can be of great use, particularly regarding access to, and facilitation of the transfer of, knowledge and information. Clearly, Moi University must use IT to its full potential as it has invested heavily in IT for its strategic objectives. Evidence of this can be seen in the areas of library services, faculty activities, central services and administration and management operations. This paper focuses on improving information management and communication based on the new generation of multimedia computer packages within an academic institutional environment. It is therefore argued that a management information system designed for Moi University needs to reflect the organizational objectives and current multimedia technologies in order to remain strategically important. This paper then examines the potentiality or utility of integrated IT at the disposal of Moi University.
Presents a feasibility study on the American Lung Association’s new teenage smoking cessation programme, Not On Tobacco (N‐O‐T). Examines participant and facilitator…
Presents a feasibility study on the American Lung Association’s new teenage smoking cessation programme, Not On Tobacco (N‐O‐T). Examines participant and facilitator reactions to N‐O‐T, facilitator training, recruitment, participant attendance and retention, and immediate post‐programme efficacy. Programme efficacy was assessed by comparing the quit rates and mean cigarette reduction of high school smokers who received N‐O‐T with those receiving a brief intervention. Findings regarding programme acceptability, facilitator training, recruitment, and attendance and retention were consistently positive. Evaluation data suggested that N‐O‐T is “user friendly” and acceptable for use in school settings. The programme had a significant impact on both quitting and smoking reduction, and furthermore, appeared to be effective for males and females and for young people from different geographic areas.
Numerical magnetic field analysis is used for predicting the performance of an induction motor and a slip‐ring generator having different faults implemented in their…
Numerical magnetic field analysis is used for predicting the performance of an induction motor and a slip‐ring generator having different faults implemented in their structure. Virtual measurement data provided by the numerical magnetic field analysis are analysed using modern signal processing techniques to get a reliable indication of the fault. Support vector machine based classification is applied to fault diagnostics. The stator line current, circulating currents between parallel stator branches and forces between the stator and rotor are compared as media of fault detection.