Application of nonsmooth optimisation to data analysis
- Authors: Ugon, Julien
- Date: 2005
- Type: Text , Thesis , PhD
- Full Text:
- Description: The research presented in this thesis is two-fold: on the one hand, major data mining problems are reformulated as mathematical programming problems. These problems should be carefully designed, since from their formulation depends the efficiency, perhaps the existence, of the solvers. On the other hand, optimisation methods are adapted to solve these problems, most of which are nonsmooth and nonconvex. This part is delicate, as the solution is often required to be good and obtained fast. Numerical experiments on real-world datasets are presented and analysed.
- Description: Doctor of Philosophy
- Authors: Ugon, Julien
- Date: 2005
- Type: Text , Thesis , PhD
- Full Text:
- Description: The research presented in this thesis is two-fold: on the one hand, major data mining problems are reformulated as mathematical programming problems. These problems should be carefully designed, since from their formulation depends the efficiency, perhaps the existence, of the solvers. On the other hand, optimisation methods are adapted to solve these problems, most of which are nonsmooth and nonconvex. This part is delicate, as the solution is often required to be good and obtained fast. Numerical experiments on real-world datasets are presented and analysed.
- Description: Doctor of Philosophy
Ergonomics interventions as investments in occupational health and safety : A selected series of case studies within the Australian postal corporation
- Authors: Nelson, David
- Date: 2006
- Type: Text , Thesis , PhD
- Full Text:
- Description: This thesis examines and reports upon the application of ergonomics interventions to OHS-based industrial problems. The study focuses on the values of these interventions as investment opportunieties for management. A wide review of the scientific and commercial literature, personal information, observation techniques, and a selected series of seven case studies and eleven separate data-sets within the Australian Postal Corporation have been undertaken.
- Description: Doctor of Philosophy
- Authors: Nelson, David
- Date: 2006
- Type: Text , Thesis , PhD
- Full Text:
- Description: This thesis examines and reports upon the application of ergonomics interventions to OHS-based industrial problems. The study focuses on the values of these interventions as investment opportunieties for management. A wide review of the scientific and commercial literature, personal information, observation techniques, and a selected series of seven case studies and eleven separate data-sets within the Australian Postal Corporation have been undertaken.
- Description: Doctor of Philosophy
Getting in through the front door : The first hurdle of researching in companies
- Authors: Smith, Erica
- Date: 2012
- Type: Text , Journal article
- Relation: International Journal of Training Research Vol. 10, no. 3 (2012), p. 153-163
- Full Text:
- Reviewed:
- Description: This paper examines what is arguably the most important issue in qualitative research - access to willing participants - specifically in the context of companies. This is of considerable importance in vocational education and training (VET) as workplaces are the site of much VET activity. While research textbooks discuss many issues in research, few address this topic explicitly or in depth. From those textbooks aimed at undergraduate students (e.g., Polonksy and Waller, 2005) to the more scholarly books such as the 'Sage Handbook of Organisational Research Methods' (Buchanan & Bryman, eds., 2009) there is scarcely a mention of the problem of gaining access to organisations. Yet access is the major hurdle for most researchers, particularly when researching in companies. Attempting to gain access is a lengthy and sometimes dispiriting activity with outcomes that are often satisficing rather than optimal. The paper, based on Australian researchers' experiences, reports on the difficulties of gaining access to suitable sites, and the ways in which access were gained, and reflects on the outcomes of the access process. This is undertaken partly through the author's self-reflection on her own experiences in carrying out three VET research projects during 2010, requiring access in total to 13 case study sites and 20 phone interview participants, and partly through email interviews with other VET researchers who have researched within companies during three recent years. © eContent Management Pty Ltd.
- Description: 2003010577
- Authors: Smith, Erica
- Date: 2012
- Type: Text , Journal article
- Relation: International Journal of Training Research Vol. 10, no. 3 (2012), p. 153-163
- Full Text:
- Reviewed:
- Description: This paper examines what is arguably the most important issue in qualitative research - access to willing participants - specifically in the context of companies. This is of considerable importance in vocational education and training (VET) as workplaces are the site of much VET activity. While research textbooks discuss many issues in research, few address this topic explicitly or in depth. From those textbooks aimed at undergraduate students (e.g., Polonksy and Waller, 2005) to the more scholarly books such as the 'Sage Handbook of Organisational Research Methods' (Buchanan & Bryman, eds., 2009) there is scarcely a mention of the problem of gaining access to organisations. Yet access is the major hurdle for most researchers, particularly when researching in companies. Attempting to gain access is a lengthy and sometimes dispiriting activity with outcomes that are often satisficing rather than optimal. The paper, based on Australian researchers' experiences, reports on the difficulties of gaining access to suitable sites, and the ways in which access were gained, and reflects on the outcomes of the access process. This is undertaken partly through the author's self-reflection on her own experiences in carrying out three VET research projects during 2010, requiring access in total to 13 case study sites and 20 phone interview participants, and partly through email interviews with other VET researchers who have researched within companies during three recent years. © eContent Management Pty Ltd.
- Description: 2003010577
Determination of soil hydraulic parameters and evaluation of water dynamics and nitrate leaching in the unsaturated layered zone: A modeling case study in Central Croatia
- Defterdarović, Jasmina, Filipović, Lana, Kranjčec, Filip, Ondrašek, Gabrijel, Kikić, Diana, Novosel, Alen, Mustać, Ivan, Krevh, Vedran, Magdić, Ivan, Rubinić, Vedran, Bogunović, Igor, Dugan, Ivan, Čopec, Krešimir, He, Hailong, Filipović, Vilim
- Authors: Defterdarović, Jasmina , Filipović, Lana , Kranjčec, Filip , Ondrašek, Gabrijel , Kikić, Diana , Novosel, Alen , Mustać, Ivan , Krevh, Vedran , Magdić, Ivan , Rubinić, Vedran , Bogunović, Igor , Dugan, Ivan , Čopec, Krešimir , He, Hailong , Filipović, Vilim
- Date: 2021
- Type: Journal article
- Relation: Sustainability (Basel, Switzerland) Vol. 13, no. 12 (2021), p. 6688
- Full Text:
- Reviewed:
- Description: Nitrate leaching through soil layers to groundwater may cause significant degradation of natural resources. The aims of this study were: (i) to estimate soil hydraulic properties (SHPs) of the similar soil type with same management on various locations (ii) to determine annual water dynamics and (iii) to estimate the impact of subsoil horizon properties on nitrate leaching. The final goal was to compare the influence of different SHPs and layering on water dynamics and nitrate leaching. The study was conducted in central Croatia (Zagreb), at four locations on Calcaric Phaeozem, Calcaric Regosol, and Calcaric Fluvic Phaeozem soil types. Soil hydraulic parameters were estimated using the HYPROP system and HYPROP-FIT software. Water dynamics and nitrate leaching were evaluated using HYDRUS 2D/3D during a period of 365 days. The amount of water in the soil under saturated conditions varied from 0.422 to 0.535 cm3 cm−3 while the hydraulic conductivity varied from 3 cm day−1 to 990.9 cm day−1. Even though all locations have the same land use and climatic conditions with similar physical properties, hydraulic parameters varied substantially. The amount and velocity of transported nitrate (HYDRUS 2D/3D) were affected by reduced hydraulic conductivity of the subsoil as nitrates are primarily transported via advective flux. Despite the large differences in SHPs of the topsoil layers, the deeper soil layers, having similar SHPs, imposed a buffering effect preventing faster nitrate downward transport. This contributed to a very similar distribution of nitrates through the soil profile at the end of simulation period. This case study indicated the importance of carefully selecting relevant parameters in multilayered soil systems when evaluating groundwater pollution risk.
- Authors: Defterdarović, Jasmina , Filipović, Lana , Kranjčec, Filip , Ondrašek, Gabrijel , Kikić, Diana , Novosel, Alen , Mustać, Ivan , Krevh, Vedran , Magdić, Ivan , Rubinić, Vedran , Bogunović, Igor , Dugan, Ivan , Čopec, Krešimir , He, Hailong , Filipović, Vilim
- Date: 2021
- Type: Journal article
- Relation: Sustainability (Basel, Switzerland) Vol. 13, no. 12 (2021), p. 6688
- Full Text:
- Reviewed:
- Description: Nitrate leaching through soil layers to groundwater may cause significant degradation of natural resources. The aims of this study were: (i) to estimate soil hydraulic properties (SHPs) of the similar soil type with same management on various locations (ii) to determine annual water dynamics and (iii) to estimate the impact of subsoil horizon properties on nitrate leaching. The final goal was to compare the influence of different SHPs and layering on water dynamics and nitrate leaching. The study was conducted in central Croatia (Zagreb), at four locations on Calcaric Phaeozem, Calcaric Regosol, and Calcaric Fluvic Phaeozem soil types. Soil hydraulic parameters were estimated using the HYPROP system and HYPROP-FIT software. Water dynamics and nitrate leaching were evaluated using HYDRUS 2D/3D during a period of 365 days. The amount of water in the soil under saturated conditions varied from 0.422 to 0.535 cm3 cm−3 while the hydraulic conductivity varied from 3 cm day−1 to 990.9 cm day−1. Even though all locations have the same land use and climatic conditions with similar physical properties, hydraulic parameters varied substantially. The amount and velocity of transported nitrate (HYDRUS 2D/3D) were affected by reduced hydraulic conductivity of the subsoil as nitrates are primarily transported via advective flux. Despite the large differences in SHPs of the topsoil layers, the deeper soil layers, having similar SHPs, imposed a buffering effect preventing faster nitrate downward transport. This contributed to a very similar distribution of nitrates through the soil profile at the end of simulation period. This case study indicated the importance of carefully selecting relevant parameters in multilayered soil systems when evaluating groundwater pollution risk.
What are the pros and cons of gaining qualifications through work?
- Authors: Smith, Erica , Smith, Andy
- Date: 2009
- Type: Text , Conference paper
- Relation: Paper presented at 5th International Centre for Research in Lifelong Learning Conference : Lifelong Learning Revisited : What Next?, University of Stirling, Scotland : 23rd-26th June 2009
- Full Text:
- Description: An important plank in lifelong learning policy in both the UK and Australia has been the opportunity for workers to gain qualifications through work. In Australia this opportunity has often been provided through the traineeship system which is a form of ‘modern apprenticeship’ that has now been in place for twenty years. Two national Australian research projects on the delivery of qualifications through work have been undertaken over a five-year period by the authors and colleagues. Both projects involved research with workers, managers, training providers, industry bodies, and relevant officials at State and national level. The 2003 project surveyed 400 companies that provided qualification-based training at work and also included twelve enterprise case studies. The 2008 project involved six indepth industry case studies, each of which involved interviews with relevant senior stakeholders and two enterprise case studies, as well as in-depth interviews with senior policy officials, employer peak bodies and trade unions. The studies showed that many advantages accrue to workers as well as to employers from the delivery of qualifications through work. However there are also some disadvantages and problematic areas for workers, some of which may become more apparent as the global financial crisis affects employment. In the discussion, some parallels are drawn between the Australian and the UK approach to delivering qualifications to lower-level workers through work.
- Description: 2003007929
- Authors: Smith, Erica , Smith, Andy
- Date: 2009
- Type: Text , Conference paper
- Relation: Paper presented at 5th International Centre for Research in Lifelong Learning Conference : Lifelong Learning Revisited : What Next?, University of Stirling, Scotland : 23rd-26th June 2009
- Full Text:
- Description: An important plank in lifelong learning policy in both the UK and Australia has been the opportunity for workers to gain qualifications through work. In Australia this opportunity has often been provided through the traineeship system which is a form of ‘modern apprenticeship’ that has now been in place for twenty years. Two national Australian research projects on the delivery of qualifications through work have been undertaken over a five-year period by the authors and colleagues. Both projects involved research with workers, managers, training providers, industry bodies, and relevant officials at State and national level. The 2003 project surveyed 400 companies that provided qualification-based training at work and also included twelve enterprise case studies. The 2008 project involved six indepth industry case studies, each of which involved interviews with relevant senior stakeholders and two enterprise case studies, as well as in-depth interviews with senior policy officials, employer peak bodies and trade unions. The studies showed that many advantages accrue to workers as well as to employers from the delivery of qualifications through work. However there are also some disadvantages and problematic areas for workers, some of which may become more apparent as the global financial crisis affects employment. In the discussion, some parallels are drawn between the Australian and the UK approach to delivering qualifications to lower-level workers through work.
- Description: 2003007929
Supporting beginning rural teachers : Lessons from successful schools
- White, Simone, Lock, Graeme, Hastings, Wendy, Reid, Joanne, Green, Bill, Cooper, Maxine
- Authors: White, Simone , Lock, Graeme , Hastings, Wendy , Reid, Joanne , Green, Bill , Cooper, Maxine
- Date: 2009
- Type: Text , Conference paper
- Relation: Paper presented at ‘Teacher education crossing borders: Cultures, contexts, communities and curriculum’ the annual conference of the Australian Teacher Education Association (ATEA), Albury, New South Wales : 28th June - 1st July 2009
- Full Text:
- Description: Across Australia and internationally, the vexed problem of staffing rural school remains a major issue affecting the educational outcomes of many rural students and their families. TERRAnova, (New Ground’ in Teacher Education for Rural and Regional Australia), is the name of a large Australian Research Council funded (2008-2010) project involving: a national study of pre-service preparation and rural incentive schemes offered by both University and State government agencies, a longitudinal study of beginning teachers who take up rural appointments and a study of communities where teacher retention is high. In 2008 calls for nominations for rural schools with high rates of retaining beginning teachers were sought (over three years), and twenty-four of nearly fifty nominated schools were selected as case studies. Each case study has involved researchers from the TERRAnova team travelling and staying as close to the community nominated as possible. Numerous teaching staff, parents and community members were invited to be interviewed and their recordings were transcribed. Five of these case studies have now been completed, and this paper examines common themes derived from the strategies that support beginning teachers in these rural communities. Key factors emerging to date from the data relate to particular models of rural school leadership, ongoing teacher learning and mentoring, and school support and innovative community practices.
- Description: 2003008006
- Authors: White, Simone , Lock, Graeme , Hastings, Wendy , Reid, Joanne , Green, Bill , Cooper, Maxine
- Date: 2009
- Type: Text , Conference paper
- Relation: Paper presented at ‘Teacher education crossing borders: Cultures, contexts, communities and curriculum’ the annual conference of the Australian Teacher Education Association (ATEA), Albury, New South Wales : 28th June - 1st July 2009
- Full Text:
- Description: Across Australia and internationally, the vexed problem of staffing rural school remains a major issue affecting the educational outcomes of many rural students and their families. TERRAnova, (New Ground’ in Teacher Education for Rural and Regional Australia), is the name of a large Australian Research Council funded (2008-2010) project involving: a national study of pre-service preparation and rural incentive schemes offered by both University and State government agencies, a longitudinal study of beginning teachers who take up rural appointments and a study of communities where teacher retention is high. In 2008 calls for nominations for rural schools with high rates of retaining beginning teachers were sought (over three years), and twenty-four of nearly fifty nominated schools were selected as case studies. Each case study has involved researchers from the TERRAnova team travelling and staying as close to the community nominated as possible. Numerous teaching staff, parents and community members were invited to be interviewed and their recordings were transcribed. Five of these case studies have now been completed, and this paper examines common themes derived from the strategies that support beginning teachers in these rural communities. Key factors emerging to date from the data relate to particular models of rural school leadership, ongoing teacher learning and mentoring, and school support and innovative community practices.
- Description: 2003008006
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