title: Understanding the properties of low-cost iron-containing powder metallurgy titanium alloys

authors: Bolzoni, Leandro

abstract: The high production costs of titanium in comparison to other structural metals is the main limiting factor for the wide employment of titanium. Cost reduction can be addressed considering creative fabrication methods and/or formulating new chemical compositions. In this work the fabrication of low-cost iron-containing powder metallurgy titanium alloys is studied by using a spherical 85Fe/15Ni powder whose small particle size and spherical morphology favours both the densification of the material and the diffusion of the alloying elements. The designed composition are obtained by the blending elemental approach and processed by means of the conventional powder metallurgy route. The high vacuum sintered α + β alloys show homogeneous microstructure and the formation of brittle intermetallic phases is prevented as checked by XRD and DTA analysis. Similar physical and mechanical behaviour to wrought-equivalent structural titanium alloys is obtained for these new low-cost alloys which, therefore, are potential materials for cheaper structural titanium components.

text: Understanding the properties of low-cost iron-containing powder metallurgy titanium alloys The high production costs of titanium in comparison to other structural metals is the main limiting factor for the wide employment of titanium. Cost reduction can be addressed considering creative fabrication methods and/or formulating new chemical compositions. In this work the fabrication of low-cost iron-containing powder metallurgy titanium alloys is studied by using a spherical 85Fe/15Ni powder whose small particle size and spherical morphology favours both the densification of the material and the diffusion of the alloying elements. The designed composition are obtained by the blending elemental approach and processed by means of the conventional powder metallurgy route. The high vacuum sintered α + β alloys show homogeneous microstructure and the formation of brittle intermetallic phases is prevented as checked by XRD and DTA analysis. Similar physical and mechanical behaviour to wrought-equivalent structural titanium alloys is obtained for these new low-cost alloys which, therefore, are potential materials for cheaper structural titanium components.

year: 2016-11-15

title: Text categorization and similarity analysis: similarity measure, architecture and design

authors: Fowke, Michael

subjects: computer science

abstract: This research looks at the most appropriate similarity measure to use for a document classification problem. The goal is to find a method that is accurate in finding both semantically and version related documents. A necessary requirement is that the method is efficient in its speed and disk usage. Simhash is found to be the measure best suited to the application and it can be combined with other software to increase the accuracy. Pingar have provided an API that will extract the entities from a document and create a taxonomy displaying the relationships and this extra information can be used to accurately classify input documents. Two algorithms are designed incorporating the Pingar API and then finally an efficient comparison algorithm is introduced to cut down the comparisons required.

text: Text categorization and similarity analysis: similarity measure, architecture and design This research looks at the most appropriate similarity measure to use for a document classification problem. The goal is to find a method that is accurate in finding both semantically and version related documents. A necessary requirement is that the method is efficient in its speed and disk usage. Simhash is found to be the measure best suited to the application and it can be combined with other software to increase the accuracy. Pingar have provided an API that will extract the entities from a document and create a taxonomy displaying the relationships and this extra information can be used to accurately classify input documents. Two algorithms are designed incorporating the Pingar API and then finally an efficient comparison algorithm is introduced to cut down the comparisons required.

year: 2013-12

title: Barriers and incentives to Māori participation in the profession of psychology: A report for the New Zealand Psychologists' Board

authors: Levy, Michelle Patricia

subjects: bicultural approaches

abstract: It is well known that Māori are over-represented within the client group of psychologists. Despite ongoing attempts to recruit and retain more Māori within the discipline of psychology, the numbers of Māori psychologists continues to remain low, raising serious concerns about the ability of the profession to effectively meet the needs of its clientele. The salient barrier to increasing Māori participation in psychology is the environments in which Māori students of psychology and Māori psychologists are required to participate. Areas covered include current Māori participation in psychology, barriers to Māori participation such as psychology's reliance on western paradigms, lack of Māori participation in psychology training programmes, lack of support for Māori psychology students, and a lack of commitment to Māori development in psychology.

text: Barriers and incentives to Māori participation in the profession of psychology: A report for the New Zealand Psychologists' Board It is well known that Māori are over-represented within the client group of psychologists. Despite ongoing attempts to recruit and retain more Māori within the discipline of psychology, the numbers of Māori psychologists continues to remain low, raising serious concerns about the ability of the profession to effectively meet the needs of its clientele. The salient barrier to increasing Māori participation in psychology is the environments in which Māori students of psychology and Māori psychologists are required to participate. Areas covered include current Māori participation in psychology, barriers to Māori participation such as psychology's reliance on western paradigms, lack of Māori participation in psychology training programmes, lack of support for Māori psychology students, and a lack of commitment to Māori development in psychology.

year: 2002-09-01