Testing a multidimensional theory of person-environment fit

The current study examines the validity of a multidimensional Person-Environment (PE) fit model proposed by Jansen and Kristof-Brown (2006). The overall aim of the paper is to test the model's factor structure and influences upon outcome measures. A panel of organizational employees from a wide range of companies and locations were asked to complete a survey (n = 1,875) measuring five discrete dimensions of perceptual PE fit (Person-Organization, Person-People, Person-Job, Person-Group, and Person-Vocation) and three outcomes (organizational commitment, intention to leave, and job satisfaction). The first sequence of analysis tested the proposed model using Confirmatory Factor Analysis (CFA) statistical approaches. Model comparisons showed that Jansen and Kristof-Brown's (2006) original model in which the five dimensions of fit coalesce into a multidimensional construct was a poor fit with the data, but that a model in which the five dimensions of fit operate independently fit the data well. The second sequence of analysis found that the model without the multidimensional construct strongly predicted the outcomes of commitment, job satisfaction, and intention to leave. This paper discusses the implication of this research in relation to the PE fit literature.

The effects of perceived business uncertainty, external consultants and risk management on organisational outcomes

Purpose – The purpose of this paper is to investigate the relations between perceived business uncertainty (PBU), use of external risk management (RM) consultants, formalisation of RM, magnitude of RM methods and perceived organisational outcomes.
Design/methodology/approach – This paper is based on a questionnaire survey of members of the Chartered Institute of Management Accountants in the UK. Using AMOS 17.0, the paper tests the strength of the direct and indirect effects among the variables and explores the fit of the overall path model.
Findings – The results indicate significant and positive associations exist between the extent of PBU and the level ofRMformalisation, as well as between the level ofRMformalisation and the magnitude of RMmethods adopted. The use of externalRMconsultants is also found to have a significant and positive impact on the magnitude of RM methods adopted. Finally, both the extent of RM formalisation and the magnitude of RM methods adopted are seen to be significantly associated with overall improvement in organisational outcomes.
Research limitations/implications – The study uses perceptual measures of the level of business uncertainty, usage of RM and organisational outcomes. Further, the respondents are members of a management accounting professional body and the views of other managers, such as risk managers, who are also important to the governance process are not incorporated.
Originality/value – This study provides empirical evidence on the impact ofRMdesign and usage on improvements in organisational outcomes. It contributes to the RM literature where empirical research is needed in order to be comparable with the traditional management control system literature.

Image retrieval based on bag of images

Conventional relevance feedback schemes may not be suitable to all practical applications of content-based image retrieval (CBIR), since most ordinary users would like to complete their search in a single interaction, especially on the web search. In this paper, we explore a new approach to improve the retrieval performance based on a new concept, bag of images, rather than relevance feedback. We consider that image collection comprises of image bags instead of independent individual images. Each image bag includes some relevant images with the same perceptual meaning. A theoretical case study demonstrates that image retrieval can benefit from the new concept. A number of experimental results show that the CBIR scheme based on bag of images can improve the retrieval performance dramatically.

The performance of trauma in moving image art

This thesis argues that the perceptual apparatus required to view abstract and graphic films can illuminate our understanding of trauma as a social/medical concept. such 'materialist' films predict the new contemporary 'Gestalt of the senses' ushered in by digital media.

A dual-channel time-spread echo method for audio watermarking

This work proposes a novel dual-channel time-spread echo method for audio watermarking, aiming to improve robustness and perceptual quality. At the embedding stage, the host audio signal is divided into two subsignals, which are considered to be signals obtained from two virtual audio channels. The watermarks are implanted into the two subsignals simultaneously. Then the subsignals embedded with watermarks are combined to form the watermarked signal. At the decoding stage, the watermarked signal is split up into two watermarked subsignals. The similarity of the cepstra corresponding to the watermarked subsignals is exploited to extract the embedded watermarks. Moreover, if a properly designed colored pseudonoise sequence is used, the large peaks of its auto-correlation function can be utilized to further enhance the performance of watermark extraction. Compared with the existing time-spread echo-based schemes, the proposed method is more robust to attacks and has higher imperceptibility. The effectiveness of our method is demonstrated by simulation results.

Predatory vision : 3D imaging and the transformation of screen-space

Despite Wheatstone’s academic interests in the device, the stereoscope languished somewhat as an optical toy. Yet the advent of 3D screen-spaces for home and mass entertainment suggests today’s consumers and practitioners of screen culture hold the view that screen culture will be ‘improved’ through 3D imaging technologies. Like cinema and photography, stereoscopic 3D imaging has the potential to transform visual culture. But what is transformed, as optics and electronic imaging techniques deliver Alice in Wonderland in 3D? This paper links the advent of 3D cinema and TV to the notion that vision is itself a ‘technology of the visual’. As such, our innate binocular stereoacuity is ripe for exploitation by developers of 3D imaging technologies. I argue that contemporary 3D imaging marks an epistemological visual-perceptual shift: toward screenspaces becoming spaces for potential action. Such a shift entails seeing as doing rather than seeing as thinking. 3D imaging exploits binocular vision’s spatial acuity (stereopsis), but is effective only for objects within near distal space. The 3D effect tapers off dramatically for objects only some metres away, because the two retinal images lack significant lateral disparity (difference) to trigger stereopsis: the imagery flattens out and becomes ‘monoscopic’. Information available from conventional 2D media entails a peculiarly unspecified spatiality. Perceptually, the contents of a conventional cinematic screen are like those of a painting: they are situated neither near nor far, and constitute a shared and ambiguous visual space. Our own eyes are like those of a cat: frontally placed for predatory action. The visuality of 3D screen-spaces assumes a perceptuality of the near-by and close at hand, since this is the structure of the visible information to which stereopsis is adapted to respond. Noting the binocular acuity of predatory animals, as well as some etymological links, this paper examines the implications of perceptually ‘capturing’ the sensation of visually solid objects in one’s immediate space. Stereopsis is about decisive action within an immediate environment: but it also presupposes the single viewpoint of an active observer toward which the 3D imagery is targeted.

"You Tube and I Find" - personalizing multimedia content access

Recent growth in broadband access and proliferation of small personal devices that capture images and videos has led to explosive growth of multimedia content available everywhereVfrom personal disks to the Web. While digital media capture and upload has become nearly universal with newer device technology, there is still a need for better tools and technologies to search large collections of multimedia data and to find and deliver the right content to a user according to her current needs and preferences. A renewed focus on the subjective dimension in the multimedia lifecycle, fromcreation, distribution, to delivery and consumption, is required to address this need beyond what is feasible today. Integration of the subjective aspects of the media itselfVits affective, perceptual, and physiological potential (both intended and achieved), together with those of the users themselves will allow for personalizing the content access, beyond today’s facility. This integration, transforming the traditional multimedia information retrieval (MIR) indexes to more effectively answer specific user needs, will allow a richer degree of personalization predicated on user intention and mode of interaction, relationship to the producer, content of the media, and their history and lifestyle. In this paper, we identify the challenges in achieving this integration, current approaches to interpreting content creation processes, to user modelling and profiling, and to personalized content selection, and we detail future directions. The structure of the paper is as follows: In Section I, we introduce the problem and present some definitions. In Section II, we present a review of the aspects of personalized content and current approaches for the same. Section III discusses the problem of obtaining metadata that is required for personalized media creation and present eMediate as a case study of an integrated media capture environment. Section IV presents the MAGIC system as a case study of capturing effective descriptive data and putting users first in distributed learning delivery. The aspects of modelling the user are presented as a case study in using user’s personality as a way to personalize summaries in Section V. Finally, Section VI concludes the paper with a discussion on the emerging challenges and the open problems.

Language and learning preferences : a study of university students in Australia

This study sought to investigate the preferences for language use and modes of learning of university students who were completing undergraduate degrees in Australia. Of the sixty students surveyed, forty percent were international students. For seventy five percent of all students sampled, either they or their parents (or both) were bi- or multilingual. Questions which this research sought to answer were: Do the preferences for learning of university students differ according to the culture and / or language backgrounds of the students? Does an individual student’s preferred learning style influence the student’s preferences for learning in a group situation? For students whose first language is not English, do their preferences for language use vary in group learning? General findings resulting from a statistical analysis of responses to the questionnaire indicated in many, but not all, cases that the preferences for learning of university students differed according to the cultural and / or language backgrounds of the students, that an individual student’s preferred learning style influenced the student’s preferences for learning in a group situation, and that the preferences for language use of students whose first language was not English varied in group learning. Reid’s (1984 in Richards, J.C. & Lockhart, C., 1994) “Perceptual learning style preference questionnaire” comprised one section of the questionnaire for this study. This replication made possible a comparison of the findings which related to students’ learning styles from this study with findings from similar studies in which Reid’s survey instrument had been used. Findings of the present study indicate a number of differences from Reid’s findings. This study found, for example, that most language groups showed a minor preference for group learning using this survey instrument whereas Reid had found that group learning was a negligible preference for most of the language groups in her study. This study may give tertiary educators a greater understanding of their students’ preferences for group and other learning styles. It may also inform them of the likely preferences for language use of those of their students who have first languages other than English. Future students may benefit from this.

Facial affect recognition and schizotypal personality characteristics

Aim: Deficits in facial affect recognition are well established in schizophrenia, yet relatively little research has examined facial affect recognition in hypothetically psychosis-prone or ‘schizotypal’ individuals. Those studies that have examined social cognition in psychosis-prone individuals have paid little attention to the association between facial emotion recognition and particular schizotypal personality features. The present study therefore sought to investigate relationships between facial emotion recognition and the different aspects of schizotypy.

Methods: Facial affect recognition accuracy was examined in 50 psychiatrically healthy individuals assessed for level of schizotypy using the Schizotypal Personality Questionnaire. This instrument provides a multidimensional measure of schizophrenia proneness, encompassing ‘cognitive-perceptual’, ‘interpersonal’ and ‘disorganized’ features of schizotypy. It was hypothesized that the cognitive-perceptual and interpersonal aspects of schizotypy would be associated with difficulties identifying facial expressions of emotion during a forced-choice recognition task using a standardized series of colour photographs.

Results: As predicted, interpersonal aspects of schizotypy (particularly social anxiety) were associated with reduced accuracy on the facial affect recognition task, but there was no association between affect recognition accuracy and cognitive-perceptual features of schizotypy.

Conclusions: These results suggest that subtle deficits in facial affect recognition in otherwise psychiatrically healthy individuals may be related to the vulnerability for interpersonal communication difficulties, as seen in schizophrenia.

An empirical analysis of colour image segmentation using fuzzy c-means clustering

In this paper, an empirical analysis to examine the effects of image segmentation with different colour models using the fuzzy c-means (FCM) clustering algorithm is conducted. A qualitative evaluation method based on human perceptual judgement is used. Two sets of complex images, i.e., outdoor scenes and satellite imagery, are used for demonstration. These images are employed to examine the characteristics of image segmentation using FCM with eight different colour models. The results obtained from the experimental study are compared and analysed. It is found that the CIELAB colour model yields the best outcomes in colour image segmentation with FCM.

Synthesis of 2-(selenophen-2-yl) pyrroles and their electropolymerization to electrochromic nanofilms

The divergent syntheses of 2-(selenophen-2-yl)pyrroles and their N-vinyl derivatives from available 2-acylselenophenes and acetylenes in a one-pot procedure make these exotic heterocyclic ensembles accessible. Now we face a potentially vast area for exploration with a great diversity of far-reaching consequences including conducting electrochromic polymers with repeating of pyrrole and selenophene units (emerging rivalry for polypyrroles and polyselenophenes), the synthesis of functionalized pyrrole–selenophene assembles for advanced materials, biochemistry and medicine, exciting models for theory of polymer conductivity.

Contemporary planning education and Indigenous cultural competency agendas : erasing terra nullius, respect and responsibility

As noted in Universities Australia’s (2011a, 2011b) investigations into Indigenous Cultural Competency, most universities have struggled with successfully devising and achieving a translation of Indigenous protocols into their curricula. Walliss & Grant (2000: 65) have also concluded that, given the nature of the built environment disciplines, including planning, and their professional practice activities, there is a “need for specific cultural awareness education” to service these disciplines and not just attempts to insert Indigenous perspectives into their curricula. Bradley’s policy initiative at the University of South Australia (1997-2007), “has not achieved its goal of incorporation of Indigenous perspectives into all its undergraduate programs by 2010, it has achieved an incorporation rate of 61%” (Universities Australia 2011a: 9; http://www.unisa.edu.au/ducier/icup/default.asp).

Contextually, Bradley’s strategic educational aim at University of South Australia led a social reformist agenda, which has been continued in Universities Australia’s release of Indigenous Cultural Competency (2011a; 2011b) reports that has attracted mixed media criticism (Trounson 2012a: 5, 2012b: 5) and concerns that it represents “social engineering” rather than enhancing “criticism as a pedagogical tool ... as a means of advancing knowledge” (Melleuish 2012: 10). While the Planning Institute of Australia’s (PIA) Indigenous Planning Policy Working Party has observed that fundamental changes are needed to the way Australian planning education addresses Indigenous perspectives and interests, it has concluded that planners “! perceptual limitations of their own discipline and the particular discourse of our own craft” were hindering enhanced learning outcomes (Wensing 2007: 2). Gurran (PIA 2007) has noted that the core curriculum in planning includes an expectation of “knowledge of ! Indigenous Australian cultures, including relationships between their physical environment and associated social and economic systems” but that it has not been addressed. This paper critiques these discourses and offers an Indigenous perspective of the debate.

Recovering the hidden through found-footage films

In the early nineteen seventies materialist experimental film was cogently rejected by feminist theorists for its inability to deliver a feminist counter-cinema addressing its political agenda. The concomitant development of feminist psychoanalytic readings of “dominant cinema” against its grain also discounted such work. This split is marked by Peter Wollen’s formulation of “two avant-gardes”, one narrative and explicit about its political position and the other non-narrative and focusing directly on implicit perceptual processes. Materialist film’s fixation on structure jettisoned content, and extended post-war painting’s essentialist move to pure abstraction manifest in abstract expressionism and minimalism. The emergence of trauma theory and the recent explosion of moving image digital media with its non-linear bias and the complex layering of “technical images” have created a new situation opening up alternate readings of such discounted materialist practices. As well as a historic precursor for digital media, it is suggested that a materialist cinema, represented here by the found footage films: Alone: Life Wastes Andy Hardy (Arnold 1998) and Dreamwork (Tscherkassky 2001), signposts a belated return for materialist film within the context of trauma studies. This materialist turn rescues such experimental film from its traumatic excision and extends an understanding of what has been termed a “trauma cinema” by Janet Walker. Rather than pure, abstract or visionary such practice is read here through trauma theory as performing implicit mechanisms of denial and erasure.

Found footage: recycling historic material a-historically

The digital has speeded up multi-platform image delivery, to impose sampling and collagic strategies into the way we process information. This is a trauma inducing situation. During an earlier period of technological change reading the moving landscape similarly overwhelmed the early train traveller. Wolfgang Schivelbusch noted that ‘The inability to acquire a mode of perception adequate to technological travel crossed all political, ideological and aesthetic lines.’ (1983) New perceptual strategies had to be developed that contextualized the blur and the streak produced by looking out the train window without overwhelming the viewer. Utilizing Chris Brewin’s (2001) model of two parallel memory systems, this paper argues that, as another round of unprecedented technological change impacts on our senses, another ‘re-alignment’ of the senses is required. Chris Brewin’s (2001) model of two parallel memory systems, of Verbally Accessible Memory (VAM) and Situational Accessible Memory (SAM), suggests that the current information explosion requires a greater emphasis on the SAM system for processing information and critical thinking. Processed through the amygdala, SAM is implicit, situationally triggered, information intensive and conveys no sense of time. Found footage films, like those of Martin Arnold and Peter Tscherkassky that cut up, layer, repeat and recycle historic imagery perform the sampling and collagic strategies that characterize this SAM memory system to demonstrate a more visually based mode of critical thinking.

Instrumental vision

This chapter interrogates stereo-immersive ‘virtual reality’ (VR), the technology that enables a perceiver to experience what it is like to be immersed in a simulated environment. While the simulation is powered by the “geometry engine” (Cutting, 1997: 31) associated with high-end computer imaging technology, the visual experience itself is powered by ordinary human vision: the vision system’s innate capacity to see “in 3D”. To understand and critically appraise stereo-immersive VR, we should study not its purported ‘virtuality’, but its specific visuality, because the ‘reality’ of a so-called ‘virtual environment’ is afforded by the stereoacuity of binocular vision itself. By way of such a critique of the visuality of stereo-immersive VR, this chapter suggests that we think about the ‘practice’ of vision, and consider on what basis vision can have its own ‘materiality’. Pictorial perception is proposed as an exemplary visual mode in which the possibilities of perception might emerge. Against the ‘possibilities’ of vision associated with pictures, the visuality of stereo-immersive VR emerges as a harnessing, or ‘instrumentalisation’ of vision’s innate capabilities. James J. Gibson’s ‘ecological’ approach to vision studies is referenced to show the degree to which developers of VR have sought — and succeeded — to mimic the ‘realness’ of ordinary perceptual reality. This raises a question concerning whether the success of stereo-immersive VR is simultaneously the source of its own perceptual redundancy: for to bring into being the perceptual basis of ordinary ‘real’ reality, is to return the perceiver to what is already familiar and known.