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In this paper, based on the density functional theory (DFT) and finite element method (FEM), the elastic, buckling and vibrational behaviors of the monolayer bismuthene are studied.

The computed elastic properties based on DFT are used to develop a finite element (FE) model for the monolayer bismuthene in which the Bi-Bi bonds are simulated by beam elements. Furthermore, mass elements are used to model the Bi atoms. The developed FE model is used to compute Young's modulus of monolayer bismuthene. The model is then used to evaluate the buckling force and fundamental natural frequency of the monolayer bismuthene with different geometrical parameters.

Comparing the results of the FEM and DFT, it is shown that the proposed model can predict Young's modulus of the monolayer bismuthene with an acceptable accuracy. It is also shown that the influence of the vertical side length on the fundamental natural frequency of the monolayer bismuthene is not significant. However, vibrational characteristics of the bismuthene are significantly affected by the horizontal side length.

DFT and FEM are used to study the elastic, vibrational and buckling properties of the monolayer bismuthene. The developed model can be used to predict Young's modulus of the monolayer bismuthene accurately. Effect of the vertical side length on the fundamental natural frequency is negligible. However, vibrational characteristics are significantly affected by the horizontal side length.

One of the most frequently occurring classes of production system can be represented by a series of productive facilities arranged so that work flows sequentially between them. These systems can be largely defined by the output characteristics of the individual productive elements of the system and the nature of the flow between them. In reality, perhaps the most straightforward series production system is where the output rate of each productive facility is not deterministic but can be described by a unimodal distribution of some sort and the flow between each facility is not mechanically paced in any way. On a macro level such a system could represent a series of major productive units feeding into each other, where overall capacity issues would be predominant. On the micro level the system describes an unpaced manual assembly line.

A LETTER from the President of the Library Association (Mr. Berwick Sayers) has been received which we have pleasure in giving prominently.

Intellectual disabilities (ID) may complicate the experience of bereavement and loss, in those with communicative impairments compounded by complex healthcare needs and sensori-motor limitations. Whilst theorists have argued that the cognitive difficulties of people with profound ID impede mourning reactions, none have attempted to make sense of the responses they do exhibit. The current paper discusses this.

A select review considers the neurobiology underlying attachment bonds, complications in attachment formation and affect regulation in people with ID, and separation responses of people with profound ID.

The current paper demonstrates that by recognising the affective nature of separation distress, an understanding beyond a cognitive conceptualisation is possible.

It is worth questioning whether people with profound ID are incapable of any meaningful form of person permanence. A critical review could deal with this comparatively by drawing on research of person and object permanence in typically developing children.

Of specific interest, the bio-behavioural regulators of relationships may help us to appreciate the importance of routine physical health and social care for emotional wellbeing in this group.

It is argued that by appreciating the basic emotional and regulatory functions of relationships, we can achieve a greater insight into the loss experiences of people with profound ID that will offer therapeutic direction.

Boundary element method (BEM) techniques for the prediction of cavitating or ventilated flows around hydrofoils and propeller are summarized. Classical, supercavitating, and ventilated blade section geometries are considered. Recent extensions which allow for the modeling of cavities on either or both sides of the blade surface are presented. Numerical validation studies and comparisons with experimental measurements are shown.

The purpose of this paper is to investigate the effect of doping element on the structural, thermal properties, mechanical performance and the failure mechanism of hexagonal nano boron nitride (h-BN)-reinforced basalt fabric (BF)/epoxy composites produced by hand lay-up and vacuum bagging technique. h-BN particles doped to composite materials increased the tensile, bending and impact strength of the composite at certain rates while 1 Wt. % h- BN addition shows the highest tensile and flexural strength.

The epoxy resin was doped with h-BN nanopowder at the certain rates (0, 1, 2 and 4 Wt.%) and the epoxy: hardener ratios used in the study were selected as 80%: 20% by weight. Then, with the aid of a roller by hand lay-up method, a mixture of epoxy + hardeners containing nanoparticles and nanoparticle-free were fed onto BFs, 12 layers of each dimension 30 cm × 30 cm. The surplus epoxy resin was moved away from the composite sheets using the vacuum bagging process and left to cure at room temperature for 24 h. ASTM D3039 for tensile, D7264 for three-point bending and D256 for Izod impact test were performed for the mechanical tests. After the tensile test, the morphologies of the fracture surface were examined with a stereomicroscope and various failure mechanisms are highlighted.

In this study, a series of basalt/epoxy composites with h-BN nanopowders have been prepared to identify the effect of filler ratio on mechanical properties. It has been known from the results of mechanical experiments that the addition of h-BN improves the mechanical performance of materials at a certain rate. The tensile and flexural strengths of h-BN doped composites, increase for concentrations of 1 Wt.% h-BN, but decrease with the increasing content of it. The basalt/epoxy resin composite with higher mechanical properties could be a potential material in the automotive and aerospace industries.

The aim of this study is to contribute to literature within the context of this new combination of composites and their mechanical properties, failure mechanisms. It presents detailed characterization of each composite by using X-ray differaction (XRD), differential scanning calorimetry (DSC), fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy.

The purpose of this paper is to introduce the topic and review the contributions of the special issue papers on cross-sector dialogue for sustainability. The paper also presents avenues for further research.

The paper is based on a review of the current literature on cross-sector partnership and dialogue. It explores the current issues in cross-sector partnerships through a discussion of the papers accepted for the special issue, their focus, findings and key contributions.

It highlights three main key research themes and learnings from the special issue papers: a high level of “hybridity” of collaboration forms, which involve important tensions; a need to understand partnership in its context and the importance of the individual level in cross-sector collaboration.

The authors call for attention to be paid to two forms of myopia: a tendency to view partnerships primarily from a resource-based view (without much attempt to measure societal impact) and a reluctance to be explicitly critical (despite empirical evidence of some suboptimal aspects of partnerships).

The authors call for researchers to move away from a resource-based approach to one that is situated in exploring the value derived from partnerships in the broader societal context. The authors suggest some avenues for further research to move the discussion beyond the partnership imperative.

The paper outlines the need to critically revisit the very essence of what real partnership means and whether dialogue is really taking place.

In this paper, faculty librarians at an academic institution explore the ethical dimensions of conducting research with user-generated social networking service (SNS) data. In an effort to guide librarian-researchers, this paper first offers a background discussion of privacy ethics across disciplines and then proposes a library-specific ethical framework for conducting SNS research.

By surveying the literature in other disciplines, three key considerations are identified that can inform ethical practice in the field of library science: context, expectation, and value analysis. For each of these considerations, the framework is tailored to consider ethical issues, as they relate to libraries and our practice as librarian-researchers.

The unique role of the librarian-researcher demands an ethical framework specific to that practice. The findings of this paper propose such a framework.

Librarian-researchers are at a unique point in our history. In exploring SNSs as a source of data to conduct research and improve services, we become challenged by conflicting and equally cherished values of patron privacy and information access. By evaluating research according to context, expectations, and value, this framework provides an ethical path forward for research using SNS data.

As of this paper’s publication, there is no existing ethical framework for conducting SNS research in libraries. The proposed framework is informed both by library values and by broader research values, and therefore provides unique guidelines for the librarian-researcher.

The purpose of this paper is to enhance the understanding of how identification process is associated with development of organizational commitment.

A mixed-method approach incorporating surveys and interviews was employed. Data were obtained from a manufacturing organization in Australia. A clustering method was employed to identify commitment profiles. Respondents belonging to the clusters representing commitment profiles associated with desirable organizational outcomes were identified for the qualitative stage of the research.

The results showed that both organizational identity and professional/occupational identity are positively linked to the development of organizational commitment. An in-depth analysis of the qualitative data demonstrated that engagement of personal/individual level of self in identification process enhances the development of organizational commitment.

The findings suggest that human resource managers can build an effective identification process by strengthening feelings of organizational identity and creating a positive organizational image.

To the best of the author’s knowledge, this study is the first to employ a mixed-method approach to explore the relationship between organizational commitment and identification process. A mixed-method approach, on the one hand, enabled us to build on the existing objectivist commitment literature and explore commitment profiles, and on the other hand, it allowed us to provide a more complete and contextual portrayal of organizational commitment and identification process through qualitative interpretive strategies.

Water is essential for mental health. In spite of research evidence that dehydration has detrimental effects on cognitive functioning, the element of water has often been understated in the nutrition literature. The purpose of this paper is to highlight the necessity to integrate water as an essential nutrient for healthy cognitive functioning in nutrition research.

This study is based on a general review. The first section reviews the literature on the relationship between dehydration and cognitive performance in both adult and children populations, using electronic databases for systematic reviews and meta-analyses (excluding vulnerable populations, such as infants, the elderly and people with disabilities). The second section examines the status of water, as a nutrient, in nutrition and water-related documentation by international authorities (FAO, UNICEF, World Food Program, WHO, etc.).

Dehydration, even at mild levels, is associated with impairments in basic and higher order cognitive functions. Websites from international authoritative nutrition sources understate the role of water in healthy nutrition, and omit the discussion of the impact of dehydration on cognitive functioning.

The relation between dehydration and cognition is under-documented and not enough elaborated in guidelines and texts of authoritative international health policy and dietary sources.