Active clearance control system for a turbomachine

An axial compressor is provided with a cooling air manifold surrounding a portion of the shroud, and means for bleeding air from the compressor to the manifold for selectively flowing it in a modulating manner axially along the outer side of the stator/shroud to cool and shrink it during steady state operating conditions so as to obtain minimum shroud/rotor clearance conditions. Provision is also made to selectively divert the flow of cooling air from the manifold during transient periods of operation so as to alter the thermal growth or shrink rate of the stator/shroud and result in adequate clearance with the compressor rotor

Simple serous cysts of the cerebellum

It is ray intention to discuss in this paper the subject of simple Serous Cysts of the Cerebellum and to illustrate the discussion with Two cases both of which were patients in the Bristol General Hospital and one of which (Case l) came under my especial care during my tenure of office as Senior Resident officer of that institution.I intend to bring out in this paper some of the main points regarding the ETIOLOGY, PATHOLOGY, SYMPTOMATOLOGY, DIAGNOSIS, PROGNOSIS and TREATMENT of this disease paying especial attention to the operative treatment of the condition as illustrated by my cases, the dangers and difficulties that may be encountered and how best to overcome them, so as to ensure that success which Is after all the main point at issue

The effects of label design characteristics on perceptions of genetically modified food

Objective. To explore the effects on perceptions of labelling food for genetically modified content. Background: there is increasing public pressure for the compulsory labelling of genetically modified food content on all food products, and yet little is known about how the design and content of such food labels will influence product perceptions. The current research draws upon warning label research - a field in which the effect of label design manipulations on perceptions of, and responses to, potential or perceived risks is well documented. Method. Two experiments are reported that investigate how label design features influence the perception of genetically modified foods. The effects of label colour (red, blue and green), wording style (definitive vs. probabilistic and explicit vs. non-explicit) and information source (government agency, consumer group and manufacturer) on hazard perceptions and purchase intentions were measured. Results. Hazard perceptions and purchase intentions were both influenced by label design characteristics in predictable ways. Any reference to genetic modification, even if the label is stating that the product is free of genetically modified ingredients, increased hazard perception, and decreased purchase intentions, relative to a no-label condition. Conclusion. Label design effects generalise from warning label research to influence the perception of genetically modified foods in predictable ways. Application. The design of genetically modified food labels. © 2012 Copyright Taylor and Francis Group, LLC

Integrating the strengths of cognitive emotion models with traditional HCI analysis tools

This paper reports an attempt to integrate key concepts from cognitive models of emotion to cognitive models of interaction established in HCI literature. The aim is to transfer the strengths of interaction models to analysis of affect-critical systems in games, e-commerce and education, thereby increasing their usefulness in these systems where affect is increasingly recognised as a key success factor. Concepts from Scherer’s appraisal model and stimulation evaluation checks, along with a framework of emotion contexts proposed by Coulson (An everything but framework for modelling emotion. In proceeding of AAAI spring symposium on architectures for emotion, 2004), are integrated into the cycle of display-based action proposed by Norman (The design of everyday things. Basic Books, New York, 1988). Norman’s action cycle has commonly been applied as an interaction analysis tool in the field of HCI. In the wake of the recent shift of emphasis to user experience, the cognition-based action cycle is deemed inadequate to explicate affective experiences, such as happiness, joy and surprise. Models based on appraisal theories, focusing on cognitive accounts of emotion, are more relevant to understanding the causes and effects of feelings arising from interacting with digital artefacts. The paper explores the compatibility between these two genres of model, and future development of integrated analysis tools

The Naukratis Project, 1983

"During the summer of 1983 the Naukratis Project conducted the fifth and final in-field season of a program designed to elucidate the development of civilization in a twenty-five square kilometer section of the western Nile Delta. Although primarily intended as a study season, limited excavation and survey work were conducted at Kom Ge'if (Naukratis), Kom Firin and Kom Dahab, while detailed analysis of material previously excavated at these sites was being completed."--First paragraph.Includes bibliographical reference

Excavations in the South Mound at Naukratis : 1981

�In 1883 the ancient city of Naukratis was identified with the Egyptian village of Kom Ge'if by the patriarch of British archaeology, Sir William Flinders Petrie. Subsequent excavation by Petrie and other archaeologists at the end of the nineteenth century succeeded in uncovering much of the Archaic (7th-6th century B.C.) city which, according to Herodotus, was the only emporium in Egypt to which the early Greek merchants could bring their wares. While the work of these early excavators did much to increase our knowledge of the early phases of the history of Naukratis, it also raised many questions, and in an attempt to answer these questions the Naukratis Project was conceived. This project, which includes archaeological survey and excavation at more than a dozen sites in a 25 kilometer area to the north and west of Cairo, utilizes archaeological techniques developed after Petrie's time. By using a wide range of support disciplines not normally integrated into nineteenth century archaeological research, the excavators are endeavoring to place Naukratis and its environs in their total chronological, historical and ecological perspective. The following report deals with but a single facet of the work conducted by the Naukratis Project during the 1981 season: the excavations in the South Mound at Naukratis."�First paragraph.Includes bibliographical reference

The Naukratis Project : 1982

"During the summer of 1982, the Naukratis Project conducted its fourth season of archaeological excavation and survey in a 30 km. area to the north and west of the ancient city of Naukratis (modern Kom Ge'if) in the western Nile Delta."--First paragraph.Includes bibliographical reference

Tests of pattern separation and pattern completion in humans - a systematic review

OBJECTIVE: To systematically review the characteristics, validity and outcome measures of tasks that have been described in the literature as assessing pattern separation and pattern completion in humans. METHODS: Electronic databases were searched for articles. Parameters for task validity were obtained from two reviews that described optimal task design factors to evaluate pattern separation and pattern completion processes. These were that pattern separation should be tested during an encoding task using abstract, never-before-seen visual stimuli, and pattern completion during a retrieval task using partial cues; parametric alteration of the degree of interference of stimuli or degradation of cues should be used to generate a corresponding gradient in behavioral output; studies should explicitly identify the specific memory domain under investigation (sensory/perceptual, temporal, spatial, affect, response, or language) and account for the contribution of other potential attributes involved in performance of the task. A systematic, qualitative assessment of validity in relation to these parameters was performed, along with a review of general validity and task outcome measures. RESULTS: Sixty-two studies were included. The majority of studies investigated pattern separation and most tasks were performed on young, healthy adults. Pattern separation and pattern completion were most frequently tested during a retrieval task using familiar or recognizable visual stimuli and cues. Not all studies parametrically altered the degree of stimulus interference or cue degradation, or controlled for potential confounding factors. CONCLUSION: This review found evidence that some of the parameters for task validity have been followed in some human studies of pattern separation and pattern completion, but no study was judged to have adequately met all the parameters for task validity. The contribution of these parameters and other task design factors towards an optimal behavioral paradigm is discussed and recommendations for future research are made. This article is protected by copyright. All rights reserved