Evaluation of fusarium wilt resistance in a flax germplasm

Non-Peer Reviewe

Looking and learning: using participatory video to improve health and safety in the construction industry

Construction health and safety (H&S)is usually managed using a top-down approach of regulating workers' behaviour through the implementation and enforcement of prescriptive rules and procedures. This management approach privileges technical knowledge over knowledge based on workers' tacit and informal ways of knowing about H&S. The aim is to investigate the potential for participatory video to: (1) identify areas in which formal policies and procedures do not reflect as practised by workers; (2) encourage creative thinking and elicit workers' ideas for H&S improvements; and (3) provide an effective mechanism for capturing and sharing tacit H&S knowledge in construction organizations. Interviews were conducted in two case study organizations (CSOs) in the Australian construction industry. The results suggest reflexive participatory video enabled workers and managers to view their work practices from a different perspective. Workers identified new hazards, reflected about the practical difficulties in performing work in accordance with documented procedures and reframed their work practices and developed safer ways of working. Workers described how the participatory video capturing the way they work enabled them to have more meaningful input into H&S decision-making than they had previously experienced. Workers also expressed a strong preference for receiving H&S information in a visual format and commented that video was better suited to communicating H&S 'know how' than written documents. The research is significant in providing initial evidence that participatory video has the potential to improve H&S in construction

Palm Tree Detection in Drone Images Using Deep Convolutional Neural Networks: Investigating the Effective Use of YOLO V3

Owing to the agricultural and economic importance to many countries, computer based automated palm-tree detection from aerial images, has been an area of research significance to the computer vision research community worldwide. Most previous approaches have applied traditional machine learning algorithms for palm-tree detection. However, in the recent past, deep neural network based learning has been proven to be a far more superior approach for general object detection and recognition tasks in many application areas. Alongside this technological development lightweight UAVs, e.g. Drones, have been widely accepted as having great practical potential and economic benefit in the surveillance of large areas of land, in significantly higher resolution, as compared to the traditional use of satellite images or more expensive large UAVs. This research presents a novel methodology based on the latest YOLO Version-3 Convolutional Neural Network object detector for detecting palm-trees in drone images captured in a desert area that includes palm-trees of different sizes, resolution, ground spread, degree of overlap, etc. In particular, we discuss the specific training strategy adopted and hyper-parameter optimisations carried out to improve the accuracy from a modest 0.78 to 0.96

Current methodologies and approaches for the formation of core–sheath polymer fibers for biomedical applications

The application of polymer fibers has rocketed to unimaginable heights in recent years and occupies every corner of our day-to-day life, from knitted protective textile clothes to buzzing smartphone electronics. Polymer fibers could be obtained from natural and synthetic polymers at a length scale from the nanometer to micrometer range. These fibers could be formed into different configurations such as single, core–sheath, hollow, blended, or composite according to human needs. Of these several conformations of fibers, core–sheath polymer fibers are an interesting class of materials, which shows superior physical, chemical, and biological properties. In core–sheath fiber structures, one of the components called a core is fully surrounded by the second component known as a sheath. In this format, different polymers can be applied as a sheath over a solid core of another polymer, thus resulting in a variety of modified properties while maintaining the major fiber property. After a brief introduction to core–sheath fibers, this review paper focuses on the development of the electrospinning process to manufacture core–sheath fibers followed by illustrating the current methodology and approaches to form them on a larger scale, suitable for industrial manufacturing and exploitation. Finally, the paper reviews the applications of the core–sheath fibers, in particular, recent studies of core–sheath polymer fibers in tissue engineering (nerve, vascular grafts, cardiomyocytes, bone, tendons, sutures, and wound healing), growth factors and other bioactive component release, and drug delivery. Therefore, core–sheath structures are a revolutionary development in the field of science and technology, becoming a backbone to many emerging technologies and novel opportunities

How leadership affects organisational citizenship behaviour – a study of independent hotels

Purpose: The purpose of this study is to examine the factors that managers in independent hotels can influence to improve organisational citizenship behaviour (OCB) by examining the relationship between leadership style and OCB through newly developed balanced organisational culture and trust variables. Unlike most studies, which have been on chain hotels, this study investigates these relationships in independent hotels in Iran. Additionally, organisational size was also included in the study. Design/methodology/approach: Using information from Ministry of Cultural Heritage, Handicrafts and Tourism 160 independent hotels were identified and approached. A survey was assembled using well-known instruments. 392 usable questionnaires, out of 1150 distributed, were collected from employees and analysed using SEM. Findings: Contrary to previous studies, we found that in this context neither transformational nor transactional leadership affects trust directly but only through balanced organisational culture and only transactional leadership had a direct relationship with OCB. Also, organisational size had a moderating effect on the relationship between trust and OCB. Originality/value: We add to the theoretical literature dealing with the different behaviour of constructs developed in a Western context in other contexts and suggests that hotel managers in a collectivist culture, like Iran, who want to build OCB can do so by creating organisational culture conditions (Balanced Organisational Culture) that foster trust between managers and their subordinate

Boron nitride nanoscrolls: structure, synthesis, and applications

This is the author accepted manuscriptBoron nitride nanoscrolls (BNS) are open-ended, one-dimensional (1D) nanostructures made by the process of rolling boron nitride nanosheets (BNNS) into a scroll-like morphology. BNS offer a high surface area to volume ratio and possess many unique properties (similar to carbon nanotubes (CNT), carbon nanoscrolls (CNS) and boron nitride nanotubes (BNT)) such as high resistance to oxidation, chemical stability, increased lubrication, high-temperature resistance, electrical insulation, the ability to cap molecules inside and at the ends,and a wide band gap regardless of chirality. Despite these attractive featuresand properties well suited for applications in biotechnology, energy storage, and electronics, the true potential of boron nitride, and BNS as the next ‘miracle material’ is yet to be fully explored. In this critical review, we assess, for the first time, various studies published on the formation, structural and dynamic characteristics of BNS, potential routes for BNS synthesis, and the toxicology of BNS. Finally, the future perspectives of BNS are discussed in view of its unique and exceptional candidacy for many (real-world) applications

How leadership affects organisational citizenship behaviour – a study of independent hotels

Purpose: The purpose of this study is to examine the factors that managers in independent hotels can influence to improve organisational citizenship behaviour (OCB) by examining the relationship between leadership style and OCB through newly developed balanced organisational culture and trust variables. Unlike most studies, which have been on chain hotels, this study investigates these relationships in independent hotels in Iran. Additionally, organisational size was also included in the study. Design/methodology/approach: Using information from Ministry of Cultural Heritage, Handicrafts and Tourism 160 independent hotels were identified and approached. A survey was assembled using well-known instruments. 392 usable questionnaires, out of 1150 distributed, were collected from employees and analysed using SEM. Findings: Contrary to previous studies, we found that in this context neither transformational nor transactional leadership affects trust directly but only through balanced organisational culture and only transactional leadership had a direct relationship with OCB. Also, organisational size had a moderating effect on the relationship between trust and OCB. Originality/value: We add to the theoretical literature dealing with the different behaviour of constructs developed in a Western context in other contexts and suggests that hotel managers in a collectivist culture, like Iran, who want to build OCB can do so by creating organisational culture conditions (Balanced Organisational Culture) that foster trust between managers and their subordinates

Draft Genome Sequence of Rhodococcus sp. Strain ATCC 49988, a Quinoline-Degrading Bacterium.

We report here the 4.9-Mb genome sequence of a quinoline-degrading bacterium, Rhodococcus sp. strain ATCC 49988. The draft genome data will enable the identification of genes and future genetic modification to enhance traits relevant to heteroaromatic compound degradation

Copolymer Composition and Nanoparticle Configuration Enhance in vitro Drug Release Behavior of Poorly Water-soluble Progesterone for Oral Formulations

HYPOTHESIS: Developing oral formulations to enable effective release of poorly water-soluble drugs like progesterone is a major challenge in pharmaceutics. Coaxial electrospray can generate drug-loaded nanoparticles of strategic compositions and configurations to enhance physiological dissolution and bioavailability of poorly water-soluble drug progesterone. EXPERIMENTS: ix formulations comprising nanoparticles encapsulating progesterone in different poly(lactide-co-glycolide) (PLGA) matrix configurations and compositions were fabricated and characterized in terms of morphology, molecular crystallinity, drug encapsulation efficiency and release behavior. FINDINGS: A protocol of fabrication conditions to achieve 100% drug encapsulation efficiency in nanoparticles was developed. Scanning electron microscopy shows smooth and spherical morphology of 472.1± 54.8 to 588.0± 92.1 nm in diameter. Multiphoton Airyscan super-resolution confocal microscopy revealed core-shell nanoparticle configuration. Fourier transform infrared spectroscopy confirmed presence of PLGA and progesterone in all formulations. Diffractometry indicated amorphous state of the encapsulated drug. UV-vis spectroscopy showed drug release increased with hydrophilic copolymer glycolide ratio while core-shell formulations with progesterone co-dissolved in PLGA core exhibited enhanced release over five hours at 79.9± 1.4% and 70.7± 3.5% for LA:GA 50:50 and 75:25 in comparison with pure progesterone without polymer matrix in the core at 67.0± 1.7% and 57.5± 2.8%, respectively. Computational modeling showed good agreement with the experimental drug release behavior in vitro

Organizational justice in the hotel industry: revisiting GLOBE from a national culture perspective

Purpose - Despite its significance, national culture is often underrepresented in the hospitality industry. Implementing tools such as the Global Leadership and Organizational Behavior Effectiveness (GLOBE), while valuable to a considerable extent, might induce false assumptions about of the universality of managerial practices for hotels through purposefully ignoring the in-group variations within each cultural cluster. Because employees’ perceptions are deeply rooted in context-specific value systems, this study challenges the tendency to adopt a globalized approach to leadership and management through investigating potential variations in employees’ perceptions in two countries in the south Asian cluster of the GLOBE. Design/methodology/approach - Data were collected by using hard-copy and online by convenience-sampling technique from a sample of hotel employees and managers in Iran (392) and India (421). Structural equation modeling using AMOS 22 was adopted to test the hypotheses. Findings - Both similarities and differences were observed between the Iranian and Indian contexts. The similarities confirm that GLOBE is correct to place them in the same regional cluster but the differences which relate to perceptions of organizational justice are also revealing. While Procedural Justice affects organizational factors that influence employee motivation with the Iranian sample, Distributive Justice has no effect, whereas with the Indian sample these results were the other way around. Implications – For scholars and practitioners we show that organizational theories and concepts cannot necessarily be transferred from a Western context to other parts of the world without making adjustments for national culture and generalizations cannot even be made within regions of similar culture. For example, this study shows that in Iran organizational justice is perceived differently from how it is perceived in India. Originality - This study extends the literature about the effect of national culture on the hotel employees’ cognitions and behaviours through shedding light on the divergence between countries within the same regional cluster in the GLOBE classification