66,333 research outputs found

    Keeping Up with the Joneses: New Models to Support Developing Needs

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    The purpose of this paper is to explore models that may improve interdisciplinary collection strategies. Practical alternatives and expansions to existing services that can be explored without the burden of irreversible consequences will be discussed. This paper is intended more so as a conversation starter about altering our thought processes in regards to how librarians carry out their work to meet new demands. It is not intended to be a guide with proven methods that will work universally. These proposals are set within the context of a library that is part of a large research institution.International Federation of Library AssociationsUniversity of Toronto, LibraryUniversity of Toronto, Faculty of InformationUniversity of Illinois, LibraryTitle VI National Resource Center Grant (P015A060066)unpublishednot peer reviewe

    Consistency of Hedonic Price Indexes with Unobserved Characteristics

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    Hedonic regressions are prone to omitted variable bias. The estimation of price relatives for new and disappearing goods using hedonic imputation methods involves taking ratios of hedonic models. This may lead to a situation where the omitted variable bias in each of the hedonic regressions offset each other. This study finds that the single imputation hedonic method estimates inconsistent price relatives, while the double imputation method may produce consistent price relatives depending on the behavior of unobserved characteristics in the comparison periods. The study outlines a methodology to test whether double imputation price relatives are consistent. The results of this study have implications with regard to the construction of quality adjusted indexes.Hedonic imputation method; omitted variable bias; model selection; quality adjusted price indexes; new and disappearing goods

    Higher Education attainment : the case of intergenerational transmission of education in Portugal

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    The lack of formal education and competences of the Portuguese workers is one of the biggest problems of the country. This lack is disappearing as quickly as desired and the young generations still lag far behind those in other OECD countries. This paper studies the intergenerational transmission of education achievement, in particular higher education completion, seeking to determine the influence on future attainment of parents’ education and labor market conditions while the child was growing up. We conclude that the education of the parents is very important, even if it is only one of them that has it. This influence seems not to be independent of the gender of the parent who has it. The fact that the parents face unemployment has a negative effect on the educational achievement of the child. Females generally perform better than males, but there are exceptions. For instance, it is significantly lower if the father has low education and the mother has secondary or higher education.N/

    Reply to Notes on: “The Generalised Index Numbers”

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    Generalised Index Numbers, Basket Factor, Indicator Function

    The women in IT (WINIT) final report

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    The Women in IT (WINIT) project was funded by the European Social Fund (ESF) from March 2004 until April 2006 under HE ESF Objective 3: Research into equal opportunities in the labour market. Specifically the project came under Policy Field 2, Measure 2: Gender discrimination in employment. The project was run in the Information Systems Institute of the University of Salford. One of the Research Associates has an information systems (IS) background, the other has a background in sociology. We begin this report with an overview of the current situation with regards women in the UK IT sector. Whilst gender is only recently being recognised as an issue within the mainstream IS academic community, thirty years of female under-representation in the ICT field in more general terms has received more attention from academics, industry and government agencies alike. Numerous research projects and centres (such as the UK Resource Centre for Women in Science, Engineering and Technology) exist to tackle the under-representation of women in SET careers, although the figures for women’s participation in the ICT sector remain disheartening, with current estimates standing at around 15% (EOC 2004). Various innovative initiatives, such as e-Skills’ Computer Clubs for Girls, appear to have had little impact on these low female participation rates. Additionally, these and other initiatives have been interpreted as a means to fill the skills gap and ‘make up the numbers’ to boost the UK economy (French and Richardson 2005), resulting in ‘add more women and stir’ solutions to the ‘problem’ of gender in relation to inclusion in IS and ICT (Henwood 1996). Given that there have been decades of equal opportunity and related policies as well as many government initiatives designed to address the gender imbalance in IT employment patterns, sex segregation in IT occupations and pay and progression disparity in the IT sector (including the latest initiative- a one million pound DTI funded gender and SET project), we could be forgiven for assuming that these initiatives have had a beneficial effect on the position and number of women in the IT workforce, and that even if we have not yet achieved gender equity, we can surely argue that there are positive moves in the right direction. Although we do not wish to make definitive claims about the success or failure of specific initiatives, our research, backed up by recent major surveys, paints a picture that remains far from rosy. Indeed a recent comparative survey of the IT workforce in Germany, Holland and the UK indicates that women are haemorrhaging out of the UK IT workforce (Platman and Taylor 2004). From a high point of 100,892 women in the UK IT workforce in 1999, Platman and Taylor (ibid., 8) report a drop to 53,759 by 2003. As the IT industry was moving into recession anyway, the number of men in the industry has also declined, but by nothing like as much, so the figures for women are stark. When it comes to number crunching who is employed in the UK IT sector and when trying to make historical comparisons, the first obstacle is defining the sector itself. Studies vary quite substantially in the number of IT workers quoted suggesting there is quite a bit of variation in what is taken to be an IT job. The IT industry has experienced considerable expansion over the past twenty years. In spring 2003 in Britain, it was estimated that almost 900,000 people worked in ICT firms, and there were over 1 million ICT workers, filling ICT roles in any sector (e-Skills UK, 2003). This growth has resulted in talk of a ‘skills shortage’ requiring the ‘maximization’ of the workforce to its full potential: ‘You don’t just need pale, male, stale guys in the boardroom but a diversity of views’ (Stone 2004). In spring 2003 the Equal Opportunities Commission estimated there to be 151,000 women working in ICT occupations compared with 834,000 men (clearly using a different, much wider job definition from that of Platman and Taylor (2004)) , whilst in the childcare sector, there were less than 10,000 men working in these occupations, compared with 297,000 women (EOC 2004). It is estimated that the overall proportion of women working in ICT occupations is 15% (EOC 2004). In the UK, Office of National Statistics (ONS) statistics indicate that women accounted for 30% of IT operations technicians, but a mere 15% of ICT Managers and only 11% of IT strategy and planning professionals (EOC 2004). Although women are making inroads into technical and senior professions there remains a ‘feminisation’ of lower level jobs, with a female majority in operator and clerical roles and a female minority in technical and managerial roles (APC 2004).

    Advanced Students’ Oral Fluency: The Neglected Component in the CLT Classroom?

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    Udostępnienie publikacji Wydawnictwa Uniwersytetu Ɓódzkiego finansowane w ramach projektu „DoskonaƂoƛć naukowa kluczem do doskonaƂoƛci ksztaƂcenia”. Projekt realizowany jest ze ƛrodków Europejskiego Funduszu SpoƂecznego w ramach Programu Operacyjnego Wiedza Edukacja Rozwój; nr umowy: POWER.03.05.00-00-Z092/17-00

    Lorentz invariance violation and charge (non--)conservation: A general theoretical frame for extensions of the Maxwell equations

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    All quantum gravity approaches lead to small modifications in the standard laws of physics which lead to violations of Lorentz invariance. One particular example is the extended standard model (SME). Here, a general phenomenological approach for extensions of the Maxwell equations is presented which turns out to be more general than the SME and which covers charge non--conservation (CNC), too. The new Lorentz invariance violating terms cannot be probed by optical experiments but need, instead, the exploration of the electromagnetic field created by a point charge or a magnetic dipole. Some scalar--tensor theories and higher dimensional brane theories predict CNC in four dimensions and some models violating Special Relativity have been shown to be connected with CNC and its relation to the Einstein Equivalence Principle has been discussed. Due to this upcoming interest, the experimental status of electric charge conservation is reviewed. Up to now there seem to exist no unique tests of charge conservation. CNC is related to the precession of polarization, to a modification of the 1/r1/r--Coulomb potential, and to a time-dependence of the fine structure constant. This gives the opportunity to describe a dedicated search for CNC.Comment: To appear in Physical Review

    On the Possible Transformation and Vanishment of Epistemic Objects

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    When considering the question of possible transformation and disappearance of scientific objects, it is useful to distinguish between epistemic and technical objects. This paper presents preliminary observations and offers a typology of obsolescence. It is based on several case studies drawn from the history of life sciences. The paper proceeds as follows: first, the dynamics of epistemic objects is considered through the examples of Carl Correns’ study of “xenia”, Alfred KĂŒhn’s work on physiological developmental genetics, and Paul Zamecnik’s research on the protein biosynthesis. Second, the phasing out of technical objects is then separately discussed and illustrated by the example of radioactive tracing in biology – until recently, an established technique of visualization
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