Neighborhood environment walkability scale : validity and development of a short form

Purpose : The aim of this study was to examine the factorial and criterion validity of the Neighborhood Environment Walkability Scale (NEWS) and to develop an abbreviated version (NEWS-A).

Methods : A stratified two-stage cluster sample design was used to recruit 1286 adults. The sample was drawn from residential addresses within eight high- and eight low-walkable neighborhoods matched for socioeconomic status. Subjects completed the NEWS and reported weekly minutes of walking for transport and recreation using items from the International Physical Activity Questionnaire.

Results : Multilevel confirmatory factor analysis was used to develop measurement models of the NEWS and NEWS-A. Six individual-level and five blockgroup-level factors were identified. Factors/scales gauging presence of diversity of destinations, residential density, walking infrastructure, aesthetics, traffic safety, and crime were positively related to walking for transport. Aesthetics, mixed destinations, and residential density were associated with walking for recreation.

Conclusions : The NEWS and NEWS-A possess adequate levels of factorial and criterion validity. Alternative methods of scoring for different purposes are presented.

‘The project cannot be approved in its current form’: feminist visual research meets the human research ethics committee

This article reflects on a university human research ethics committee’s unease regarding a feminist visual pilot study within the field of education. The small exploratory study proposed to explore a migrant mother’s production of her son’s identity through her family photograph collection. The committee requested substantial changes to the research design which centred primarily on their concerns regarding risk of harm to pre-existing relationships, and also issues of anonymity and consent. I consider the combined liberal individualist, utilitarian and positivist biomedical basis for the ethics committee’s discomfort with the proposed research which was to involve members of my family. I draw on my experience of the review process to critique the human research ethics committee paradigm which constructs the ideal researcher as an objective and disinterested observer, hinges on a weighing of risks and benefits, and considers humans to be independent and equal. I demonstrate how the blanket application of these values acts to problematise some kinds of research, and how these values can be inappropriate, incompatible and even destructive when applied to research proposals that are exploratory, visual, and/or involve the researcher’s family members as participants.

Form versus function : a study into interactive learning process affecting the implementation of sustainability in commercial buildings

Owners and tenants of sustainable buildings are now realising the sustainable building that they own or occupy and also how they use the building have a significant impact on their work practices. These stakeholders are demanding sustainability outcomes such as improved occupant health and performance, lower energy and material consumption use as well as encouraging healthy ecosystem in their sustainable building. Clearly the level of user knowledge about a sustainable building and its technologies makes a difference about the actual behaviour towards sustainable buildings (Knott 2007, Stenberg 2007) There remains two major challenge faced by sustainable building occupants: (i) addressing the gap between an occupant's expectations of sustainable building outcomes and what the building actually provides and (ii) overcoming the lack of user knowledge about sustainability design and operation for a particular with regards to performance (Jailani et. al, 2011). This is an innovative study designed to address these challenges. It uses a focus group approach to investigate the gap between (a) user expectations and (b) sustainable building performance, with reference to the relationship between interactive learning process and the level of implementation of sustainability in commercial buildings. The outcome from the study will provide a post-occupancy evaluation of the perception of occupants in sustainable buildings. Most importantly, this information can then assist architects and designers in private and government organisations to successfully develop future sustainable design and policy which can fully capitalise on the original intention when delivering sustainable buildings, as well as providing an innovative feedback mechanism between occupiers and architects.

Psychological contract development: An integration of existing knowledge to form a temporal model

The psychological contract has received substantial theoretical attention over the past two decades as a popular framework within which to examine contemporary employment relationships. Previous research mostly examines breach and violation of the psychological contract and its impact on employee organization outcomes. Few studies have employed longitudinal, prospective research designs to investigate the psychological contract and as a result, psychological contract content and formation are incompletely understood. It is argued that employment relationships may be better proactively managed with greater understanding of formation and changes in the psychological contract. We examine existing psychological contract literature to identify five key factors proposed to contribute to the formation of psychological contracts. We extend the current research by integrating these factors for the first time into a temporal model of psychological contract development.

Finding aesthetic form inside the tome: the doctorate and arts based educational research

 In this paper we outline how the elements and forms of arts informed research can be used in doctoral education. Drawing on Cole and Knowles (2008) interrogation of the elements and forms of arts informed research, we rework their questions and apply them to the Australian model of the Doctor of Philosophy and consider the possibilities for arts based educational research within this model; its impacts on the doctorate itself and our role as supervisors. In the paper we ask: How can the arts (broadly conceived) inform the doctoral research process? How can the arts inform the representational form of doctoral research? What might this mean for us as supervisors? In our discussion we draw upon our work as researchers and supervisors, and consider Halse's (2011) concept of the ‘supervision as becoming’ (p. 569). Through an analysis of our supervision practices we reframe supervision as becoming in part, beyond a practice of hierarchical relationships and/or becoming as the mirror of the supervisor. Rather, we offer an explanation of research training and credentialing as taking forward a vision of new practices which although they are informed by the arts and arts based practices are however not risk averse. While we agree with Cole and Knowles (2008) to connect the work of the academy with the life and lives of communities through research that is accessible, evocative, embodied, empathic, and provocative is productive, something else is required in these times. SuperVision, is required both on the part of the candidate and the supervisors and/or supervisory panel to ensure that the PhD is executed in a way that can meet the university requirements and further is enabling of a sustainable career pathway beyond the initial doctoral education.

JLMC: A clustering method based on Jordan-Form of Laplacian-Matrix

Among the current clustering algorithms of complex networks, Laplacian-based spectral clustering algorithms have the advantage of rigorous mathematical basis and high accuracy. However, their applications are limited due to their dependence on prior knowledge, such as the number of clusters. For most of application scenarios, it is hard to obtain the number of clusters beforehand. To address this problem, we propose a novel clustering algorithm - Jordan-Form of Laplacian-Matrix based Clustering algorithm (JLMC). In JLMC, we propose a model to calculate the number (n) of clusters in a complex network based on the Jordan-Form of its corresponding Laplacian matrix. JLMC clusters the network into n clusters by using our proposed modularity density function (P function). We conduct extensive experiments over real and synthetic data, and the experimental results reveal that JLMC can accurately obtain the number of clusters in a complex network, and outperforms Fast-Newman algorithm and Girvan-Newman algorithm in terms of clustering accuracy and time complexity.

Phase inversion of ionomer-stabilized emulsions to form high internal phase emulsions (HIPEs)

Herein, we report the phase inversion of ionomer-stabilized emulsions to form high internal phase emulsions (HIPEs) induced by salt concentration and pH changes. The ionomers are sulfonated polystyrenes (SPSs) with different sulfonation degrees. The emulsion types were determined by conductivity measurements, confocal microscopy and optical microscopy, and the formation of HIPE organogels was verified by the tube-inversion method and rheological measurements. SPSs with high sulfonation degrees (water-soluble) and low sulfonation degrees (water-insoluble) can stabilize oil-in-water emulsions; these emulsions were transformed into water-in-oil HIPEs by varying salt concentrations and/or changing the pH. SPS, with a sulfonation degree of 11.6%, is the most efficient, and as low as 0.2 (w/v)% of the organic phase is enough to stabilize the HIPEs. Phase inversion of the oil-in-water emulsions occurred to form water-in-oil HIPEs by increasing the salt concentration in the aqueous phase. Two phase inversion points from oil-in-water emulsions to water-in-oil HIPEs were observed at pH 1 and 13. Moreover, synergetic effects between the salt concentration and pH changes occurred upon the inversion of the emulsion type. The organic phase can be a variety of organic solvents, including toluene, xylene, chloroform, dichloroethane, dichloromethane and anisole, as well as monomers such as styrene, butyl acrylate, methyl methacrylate and ethylene glycol dimethacrylate. Poly(HIPEs) were successfully prepared by the polymerization of monomers as the continuous phase in the ionomer-stabilized HIPEs.

Visual communication design as a form of public pedagogy

This paper identifies visual communication design as a form of public pedagogy. Communication design practices aim to achieve the successful transmission of a message to a recipient in a visual mode. Understanding the theories and practices of visual communication design can assist in enhancing the reception of the communication, as these practices become a tool to increase the effectiveness of learning in a public space. To demonstrate this, I will use the example of museums as an informal place of public learning, and argue design, and in particular visual communication design strategies, are extremely important in the creation of successful learning. If participants are not engaged or entertained, their capacity for learning will diminish. Engagement depends on the representation of the information and the successful interpretation of that information by the visitor. Further, this paper will emphasize the vital role communication design plays in all forms of public pedagogy, not just within the museum context. However, non-designers create many public learning environments and although this paper argues the benefits of communication design to increasing the effectiveness of learning, it recognizes the narrow opportunities of applying this knowledge.

Simmel, the police form and the limits of democratic policing

© 2015 The Author. I argue that the social theory of Georg Simmel can be used to illustrate certain limitations to the potential of democratic policing. Simmel makes a number of claims about trust, secrecy and accountability that are shown to have immediate relevance to my empirical case study of police-public consultation forums in Edinburgh, Scotland. Two particular aspects of the 'form' of the police-public relationship-the police's command of non-negotiable force and inequality in the reciprocity of information-play a key role in limiting some of the principal aspirations of democratic policing theory. There are permanent barriers to improving the democratic credentials of the police I argue, yet positive and progressive change is still achievable.