title: Low-cost semantic enhancement to digital library metadata and indexing: simple yet effective strategies

authors: Hinze, Annika

subjects: computer science

abstract: Most existing digital libraries use traditional lexically-based retrieval techniques. For established systems, completely replacing, or even making significant changes to the document retrieval mechanism (document analysis, indexing strategy, query processing and query interface) would require major technological effort, and would most likely be disruptive. In this paper, we describe ways to use the results of semantic analysis and disambiguation, while retaining an existing keyword-based search and lexicographic index. We engineer this so the output of semantic analysis (performed off-line) is suitable for import directly into existing digital library metadata and index structures, and thus incorporated without the need for architecture modifications.

text: Low-cost semantic enhancement to digital library metadata and indexing: simple yet effective strategies Most existing digital libraries use traditional lexically-based retrieval techniques. For established systems, completely replacing, or even making significant changes to the document retrieval mechanism (document analysis, indexing strategy, query processing and query interface) would require major technological effort, and would most likely be disruptive. In this paper, we describe ways to use the results of semantic analysis and disambiguation, while retaining an existing keyword-based search and lexicographic index. We engineer this so the output of semantic analysis (performed off-line) is suitable for import directly into existing digital library metadata and index structures, and thus incorporated without the need for architecture modifications.

year: 2016

title: Reprocessing of wood fibre reinforced polypropylene composites. Part II: Hygrothermal ageing and its effects

authors: Beg, Mohammad Dalour Hossen

subjects: A. Natural fibre composites

abstract: In this paper, hygrothermal ageing behaviour of virgin and reprocessed composites based on radiata pine (Pinus Radiata) wood fibre with a polypropylene (PP) matrix were investigated. Composites were produced with 40 wt% fibre and 4 wt% maleated polypropylene (MAPP) coupling agent using extrusion followed by injection moulding. Composites reprocessing was carried out using repeated pelletising and injection moulding for up to eight times. Hygrothermal ageing was carried out by immersing specimens in distilled water at 50 °C over a 9 month period. The diffusion coefficient of moisture absorption was obtained for composites by measuring water uptake of specimens at regular time intervals. It was found that the diffusion coefficient and the equilibrium moisture contents of composites decreased with increased number of times the materials were reprocessed. After hygrothermal ageing, tensile strength (TS), Young’s modulus (YM) and hardness of both virgin and reprocessed composites were found to decrease, but impact strength (IS) and failure strain (FS) increased. The thermal stability of both virgin and reprocessed composites was found to decrease after hygrothermal ageing.

text: Reprocessing of wood fibre reinforced polypropylene composites. Part II: Hygrothermal ageing and its effects In this paper, hygrothermal ageing behaviour of virgin and reprocessed composites based on radiata pine (Pinus Radiata) wood fibre with a polypropylene (PP) matrix were investigated. Composites were produced with 40 wt% fibre and 4 wt% maleated polypropylene (MAPP) coupling agent using extrusion followed by injection moulding. Composites reprocessing was carried out using repeated pelletising and injection moulding for up to eight times. Hygrothermal ageing was carried out by immersing specimens in distilled water at 50 °C over a 9 month period. The diffusion coefficient of moisture absorption was obtained for composites by measuring water uptake of specimens at regular time intervals. It was found that the diffusion coefficient and the equilibrium moisture contents of composites decreased with increased number of times the materials were reprocessed. After hygrothermal ageing, tensile strength (TS), Young’s modulus (YM) and hardness of both virgin and reprocessed composites were found to decrease, but impact strength (IS) and failure strain (FS) increased. The thermal stability of both virgin and reprocessed composites was found to decrease after hygrothermal ageing.

year: 2008

title: Education for sustainability in New Zealand schools: An evaluation of three professional development programmes

authors: Eames, Chris W.

subjects: Education for Sustainability

abstract: This Summary Report summarises an evaluation of three Education for Sustainability (EfS) professional development programmes being funded by the Ministry of Education: the Enviroschools Programme, the National EfS (NEfS) Team and Mātauranga Taiao. It is supported by a more extensive Overview Report (Part One in Related Pages) on the evaluation of these three initiatives and an individual report on each initiative (Parts Two-Four in Related Pages).

text: Education for sustainability in New Zealand schools: An evaluation of three professional development programmes This Summary Report summarises an evaluation of three Education for Sustainability (EfS) professional development programmes being funded by the Ministry of Education: the Enviroschools Programme, the National EfS (NEfS) Team and Mātauranga Taiao. It is supported by a more extensive Overview Report (Part One in Related Pages) on the evaluation of these three initiatives and an individual report on each initiative (Parts Two-Four in Related Pages).

year: 2010