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Institution

Curtin University

EducationPerth, Western Australia, Australia
About: Curtin University is a education organization based out in Perth, Western Australia, Australia. It is known for research contribution in the topics: Population & Zircon. The organization has 14257 authors who have published 48997 publications receiving 1336531 citations. The organization is also known as: WAIT & Western Australian Institute of Technology.


Papers
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Journal ArticleDOI
01 Feb 2008
TL;DR: This paper integrates a number of strands of a long-term project that is critically analysing the academic field of decision support systems based on the content analysis of 1093 DSS articles published in 14 major journals from 1990 to 2004.
Abstract: This paper integrates a number of strands of a long-term project that is critically analysing the academic field of decision support systems (DSS). The project is based on the content analysis of 1093 DSS articles published in 14 major journals from 1990 to 2004. An examination of the findings of each part of the project yields eight key issues that the DSS field should address for it to continue to play an important part in information systems scholarship. These eight issues are: the relevance of DSS research, DSS research methods and paradigms, the judgement and decision-making theoretical foundations of DSS research, the role of the IT artifact in DSS research, the funding of DSS research, inertia and conservatism of DSS research agendas, DSS exposure in general ''A'' journals, and discipline coherence. The discussion of each issue is based on the data derived from the article content analysis. A number of suggestions are made for the improvement of DSS research. These relate to case study research, design science, professional relevance, industry funding, theoretical foundations, data warehousing, and business intelligence. The suggestions should help DSS researchers construct high quality research agendas that are relevant and rigorous.

401 citations

Journal ArticleDOI
TL;DR: This work evaluates the performance of four primer sets targeting COI and 16S regions characterizing arthropod diversity in bat faecal samples, and investigates how metabarcoding results are affected by parameters including number of PCR replicates per sample, sequencing depth, and similarity thresholds for Operational Taxonomic Unit (OTU) clustering.
Abstract: 1.Metabarcoding of environmental samples has many challenges and limitations that require carefully considered laboratory and analysis pipelines to ensure reliable results. We explore how decisions regarding study design, laboratory work and bioinformatic processing affect the final results, and provide guidelines for reliable study of environmental samples. 2.We evaluate the performance of four primer sets targeting COI and 16S regions characterising arthropod diversity in bat faecal samples, and investigate how metabarcoding results are affected by parameters including: i) number of PCR replicates per sample, ii) sequencing depth, iii) PCR replicate processing strategy (i.e. either additively, by combining the sequences obtained from the PCR replicates, or restrictively, by only retaining sequences that occur in multiple PCR replicates for each sample), iv) minimum copy number for sequences to be retained, v) chimera removal, and vi) similarity thresholds for OTU clustering. Lastly, we measure within- and between-taxa dissimilarities when using sequences from public databases to determine the most appropriate thresholds for OTU clustering and taxonomy assignment. 3.Our results show that the use of multiple primer sets reduces taxonomic biases and increases taxonomic coverage. Taxonomic profiles resulting from each primer set are principally affected by how many PCR replicates are carried out per sample and how sequences are filtered across them, the sequence copy number threshold and the OTU clustering threshold. We also report considerable diversity differences between PCR replicates from each sample. Sequencing depth increases the dissimilarity between PCR replicates unless the bioinformatic strategies to remove allegedly artefactual sequences are adjusted according to the number of analysed sequences. Finally, we show that the appropriate identity thresholds for OTU clustering and taxonomy assignment differ between target markers. 4.Metabarcoding of complex environmental samples ideally requires i) investigation of whether more than one primer sets targeting the same taxonomic group is needed to offset the effect of primer biases, ii) more than one PCR replicate per sample, iii) bioinformatic processing approaches of sequences that balance diversity detection with removal of artificial sequences, and iv) empirical selection of OTU clustering and taxonomy assignment thresholds tailored to each genetic marker and the obtained taxa. This article is protected by copyright. All rights reserved.

401 citations

Journal ArticleDOI
TL;DR: For example, this article found that students who were encouraged to use multiple particle models displayed more scientific understandings of particles and their interactions than did students who concentrated on a correct or best analogical model.
Abstract: Analogical models are frequently used to explain science concepts at all levels of science teaching and learning. But models are more than communicative tools: they are important links in the methods and products of science. Different analogical models are regularly used to teach science in secondary schools even though little is known about how each student's mental models interact with the various models presented by teachers and in textbooks. Mounting evidence suggests that students do not interpret scientific analogical models in the way intended, nor do they find multiple and competing models easy to understand. The aim of this study is summarized in the research question: How can students' understanding of the multiple models used to explain upper secondary chemistry concepts be enhanced? This study qualitatively tracked ten students' modeling experiences, intellectual development, and conceptual status throughout grade 11 as they learned about atoms, molecules, and chemical bonds. This article reports in detail a year-long case study. The outcomes suggest that students who socially negotiated the shared and unshared attributes of common analogical models for atoms, molecules, and chemical bonds, used these models more consistently in their explanations. Also, students who were encouraged to use multiple particle models displayed more scientific understandings of particles and their interactions than did students who concentrated on a “correct” or best analogical model. The results suggest that, when analogical models are presented in a systematic way and capable students are given ample opportunity to explore model meaning and use, their understanding of abstract concepts is enhanced. © 2000 John Wiley & Sons, Inc. Sci Ed84:352–381, 2000.

401 citations

Journal ArticleDOI
G. K. Watugala1
TL;DR: The Sumudu transform as discussed by the authors is a new integral transform that makes its visualization easier and has many interesting properties, such as: (1) the differentiation and integration in the tdomain is equivalent to division and multiplication of the transformed function F(u) by uin the udomain.
Abstract: A new integral transform called the Sumudu transform is introduced. This transform possesses many interesting properties which make its visualization easier. Some of these properties are: (1) The differentiation and integration in the t‐domain is equivalent to division and multiplication of the transformed function F(u)by uin the u‐domain. (2) The unit‐step function in the t‐domain is transformed to unity in the u‐domain. (3) Scaling of the function f(t)in the t‐domain is equivalent to scaling of F(u) in the u‐domain by the same scale factor. (4) The limit of f(t) as ttends to zero is equal to the limit of F(u)as utends to zero. (5) For several cases, the limit of F(t)as ttends to infinity is the same as the limit of F(u)as u tends to infinity. (6) The slope of the function f(t) at t =0is the same as the slope of F(u) at u = 0. Hence uand F(u)are no longer dummies but can be treated as replicas of tand f(t).It is even possible to express uand F(u)using the units of tand f(t) respectively.

400 citations

Journal ArticleDOI
TL;DR: The NE China Khondalite Belt as mentioned in this paper is a terrane formed by a collision between currently unidentified terranes with the Southeastern Angara-Anabar Province at about 500-Ma, where the rocks were deformed and metamorphosed to granulite facies.

400 citations


Authors

Showing all 14504 results

NameH-indexPapersCitations
David Smith1292184100917
Christopher G. Maher12894073131
Mike Wright12777564030
Shaobin Wang12687252463
Mietek Jaroniec12357179561
John B. Holcomb12073353760
Simon A. Wilde11839045547
Jian Liu117209073156
Meilin Liu11782752603
Guochun Zhao11340640886
Mark W. Chase11151950783
Robert U. Newton10975342527
Simon P. Driver10945546299
Peter R. Schofield10969350892
Gao Qing Lu10854653914
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202398
2022454
20214,200
20203,818
20193,822
20183,543