bluuebunny/crossref_metadata_2025 huggingface dataset:
A Predictive Model for Nodal Metastases in Patients With Appendiceal Cancers
Authors: Day Ryan W. , Chang Yu-Hui , Stucky Chee-Chee , Gray Richard , Pockaj Barbara , Wasif Nabil
Published: July 2019

Background:

Histologic subtypes of appendiceal cancer vary in their propensity for metastases to regional lymph nodes (LN). A predictive model would help direct subsequent surgical therapy.

Methods:

The National Cancer Database was queried for patients with appendiceal cancer undergoing surgery between 1998 and 2012. Multivariable logistic regression was used to develop a predictive model of LN metastases which was internally validated using Brier score and Area under the Curve (AUC).

Results:

A total of 21,647 patients were identified, of whom 9079 (41.9%) had node negative disease, 4575 (21.1%) node positive disease, and 7993 (36.9%) unknown LN status. The strongest predictors of LN positivity were histology (carcinoid tumors OR 12.78, 95% CI 9.01–18.12), increasing T Stage (T3 OR 3.36, 95% CI 2.52–4.50, T4 OR 6.30, 95% CI 4.71–8.42), and tumor grade (G3 OR 5.55, 95% CI 4.78–6.45, G4 OR 5.98, 95% CI 4.30–8.31). The coefficients from the regression analysis were used to construct a calculator that generated predicted probabilities of LN metastases given certain inputs. Internal validation of the overall model showed an AUC of 0.75 (95% CI 0.74–0.76) and Brier score of 0.188. Histology-specific predictive models were also constructed with an AUC that varied from 0.669 for signet cell to 0.75 for goblet cell tumors.

Conclusions:

The risk for nodal metastases in patients with appendiceal cancers can be quantified with reasonable accuracy using a predictive model incorporating patient age, sex, tumor histology, T-stage, and grade. This can help inform clinical decision making regarding the need for a right hemicolectomy following appendectomy.
Priapism With Methylphenidate Use in a Preschool-Aged Boy Resolved With Switching to Atomoxetine
Authors: Ekinci Ozalp , Üstündağ Büşra , Tunali Bilge Didem , Abdulrazzaq Al-Bayati Mohammad B. , Demir Hüseyin , Adak İbrahim
Published: July 2019

Background

Priapism is a persistent unwanted erection that is not linked with sexual stimulation. A number of previous case reports have shown priapism with methylphenidate (MPH) use, especially in adolescence and preadolescence period. In all of these cases, the unwanted erections ceased after the medication was discontinued and no further attention-deficit hyperactivity disorder medication was initiated. Hereby, we present the case of a boy who had priapism episodes with MPH, which resolved with switching to atomoxetine (ATX).

Case Report

A 5-year, 10-month-old medically healthy boy was diagnosed with attention-deficit hyperactivity disorder and was prescribed methylphenidate immediate-release (10 mg/d). Two weeks later, his family communicated and reported penile erection episodes since the initiation of MPH. With the suspect of a medication-induced adverse reaction, MPH was discontinued and priapism resolved within a week. Thereafter, 10 mg/d of ATX was initiated. Four-week follow-up with ATX treatment revealed that the medication was tolerated well, and priapism or any other adverse effect was not reported.

Conclusions

This case report suggests that ATX may be safely used in some children who experienced priapism with MPH. Future studies are needed to clarify the risk factors and etiologic mechanisms of this adverse reaction.
Non-cell autonomous OTX2 transcription factor regulates anxiety-related behavior in the mouse
Authors: Vincent C. , Gilabert-Juan J. , Gibel-Russo R. , Alvarez-Fischer D. , Krebs M.-O. , Le Pen G. , Prochiantz A. , Di Nardo A.A.
Published: July 2019

The Otx2 homeoprotein transcription factor is expressed in the dopaminergic neurons of the ventral tegmental area, a mesencephalic nucleus involved in the control of complex behaviors through its projections to limbic structures, including the ventral hippocampus, amygdala, nucleus accumbens and medial prefrontal cortex. We find adult mice heterozygous forOtx2show anxiolysis-like phenotype in light-dark box and elevated plus maze paradigms. However, the number of dopaminergic neurons, the integrity of their axons, their projection patterns in target structures, and the amounts of dopamine and dopamine metabolites in targets structures were not modified. Because OTX2 is expressed by the choroid plexus, secreted into cerebrospinal fluid and transferred to parvalbumin interneurons of the cortex, hippocampus, and amygdala, we investigated if this phenotype could result from the decreased synthesis of OTX2 in the choroid plexus. Indeed, the anxiolysis-like phenotype was partially recapitulated in theOtx2+/AAandscFvOtx2tg/0choroid-plexus dependent non-cell-autonomous OTX2 loss of function mouse models. Furthermore, the phenotype was reversed by the overexpression ofOtx2specifically in choroid plexus of adultOtx2heterozygous mice. Taken together, OTX2 synthesis by the choroid plexus followed by its secretion into the cerebrospinal fluid is an important regulator of the anxiety phenotype in the mouse.
Structure of the bacterial flagellar rotor MS-ring: a minimum inventory/maximum diversity system
Authors: Johnson Steven , Fong Yu Hang , Deme Justin , Furlong Emily , Kuhlen Lucas , Lea Susan M.
Published: July 2019

The bacterial flagellum is a complex, self-assembling, nanomachine that confers motility on the cell. Despite great variation across species, all flagella are ultimately constructed from a helical propellor attached to a motor embedded in the inner membrane. The motor consists of a series of stator units surrounding a central rotor made up of two ring complexes, the MS-ring and the C-ring. Despite many studies, high resolution structural information is still completely lacking for the MS-ring of the rotor, and proposed mismatches in stoichiometry between the two rings have long provided a source of confusion for the field. We here present structures of the Salmonella MS-ring, revealing an unprecedented level of inter- and intra-chain symmetry variation that provides a structural explanation for the ability of the MS-ring to function as a complex and elegant interface between the two main functions of the flagellum, protein secretion and rotation.
Identifying loci under positive selection in complex population histories
Authors: Refoyo-Martínez Alba , da Fonseca Rute R. , Halldórsdóttir Katrín , Árnason Einar , Mailund Thomas , Racimo Fernando
Published: July 2019

Detailed modeling of a species’ history is of prime importance for understanding how natural selection operates over time. Most methods designed to detect positive selection along sequenced genomes, however, use simplified representations of past histories as null models of genetic drift. Here, we present the first method that can detect signatures of strong local adaptation across the genome using arbitrarily complex admixture graphs, which are typically used to describe the history of past divergence and admixture events among any number of populations. The method—called graph-aware retrieval of selective sweeps (GRoSS)—has good power to detect loci in the genome with strong evidence for past selective sweeps and can also identify which branch of the graph was most affected by the sweep. As evidence of its utility, we apply the method to bovine, codfish, and human population genomic data containing panels of multiple populations related in complex ways. We find new candidate genes for important adaptive functions, including immunity and metabolism in understudied human populations, as well as muscle mass, milk production, and tameness in specific bovine breeds. We are also able to pinpoint the emergence of large regions of differentiation owing to inversions in the history of Atlantic codfish.
A novel structurally characterized haloacid dehalogenase superfamily phosphatase fromThermococcus thioreducenswith diverse substrate specificity
Authors: Havlickova Petra , Brinsa Vitezslav , Brynda Jiri , Pachl Petr , Prudnikova Tatyana , Mesters Jeroen R. , Kascakova Barbora , Kuty Michal , Pusey Marc L. , Ng Joseph D. , Rezacova Pavlina , Kuta Smatanova Ivana
Published: July 2019

The haloacid dehalogenase (HAD) superfamily is one of the largest known groups of enzymes and the majority of its members catalyze the hydrolysis of phosphoric acid monoesters into a phosphate ion and an alcohol. Despite the fact that sequence similarity between HAD phosphatases is generally very low, the members of the family possess some characteristic features, such as a Rossmann-like fold, HAD signature motifs or the requirement for Mg2+ion as an obligatory cofactor. This study focuses on a new hypothetical HAD phosphatase fromThermococcus thioreducens. The protein crystallized in space groupP21212, with unit-cell parametersa= 66.3,b= 117.0,c= 33.8 Å, and the crystals contained one molecule in the asymmetric unit. The protein structure was determined by X-ray crystallography and was refined to 1.75 Å resolution. The structure revealed a putative active site common to all HAD members. Computational docking into the crystal structure was used to propose substrates of the enzyme. The activity of this thermophilic enzyme towards several of the selected substrates was confirmed at temperatures of 37°C as well as 60°C.
Coparenting of fathers in residential substance use treatment
Authors: Stover Carla Smith , Farrell Danielle
Published: July 2019

Purpose

Few studies have examined coparenting characteristics and experiences of fathers who use substances and are aggressive with their partners. The purpose of this paper is to use quantitative and qualitative measures to increase knowledge of coparenting of fathers with co-occurring substance use disorders and histories of intimate partner violence (IPV) to inform intervention efforts with this population.

Design/methodology/approach

Baseline interviews were used from 62 fathers in a residential treatment center who participated in a longitudinal research study about interventions for substance-misusing fathers. Coparenting-related themes were identified through qualitatively analyzing transcripts of fathers’ responses to the Articulated Thoughts in Simulated Situations (ATSS) task. Fathers completed the Coparenting Relationship Scale (CRS), Conflict Tactics Scale Revised and the Child Trauma Questionnaire. Correlations were examined to determine if themes generated from the ATSS task were associated with IPV severity or coparenting relationship.

Findings

Qualitative analysis of transcripts revealed six themes: hostility, dismissiveness, non-confrontational, child-focused, feeling undermined and being active or non-active in the ATSS task. Qualitative themes were not significantly correlated with self-reported coparenting on the CRS except coded dismissive responses were positively associated with self-reported undermining by their coparent. Self-reported physical and psychological aggression were significantly positively associated with self-reported coparent undermining but were not significantly associated with qualitative themes.

Originality/value

This study is the first to use qualitative analysis of responses to coparenting situations to understand ways fathers in substance misuse treatment with histories of IPV think about coparenting to guide interventions.
From inhumane to enticing: reimagining scandalous meat
Authors: O’Neill Kristie
Published: July 2019

Purpose

The purpose of this paper is to understand how the meanings of veal change from 1989 to 2014 in the pages of two major newspapers.

Design/methodology/approach

Articles in The Guardian and The Daily Telegraph that use the word “veal” were selected (n=1,387). Articles were read for emergent themes and each use of the word veal was coded. Each newspaper had phases of popularity in the use of the word “veal,” and unique words for each of these phases were identified. The context of these unique words was examined in order to illustrate changes in what to eat and why, as well as how to access food and act toward it.

Findings

This paper illustrates how readers are meaningfully encouraged to engage in food politics in ways that may be incrementally transformative, but do not involve demanding food as a right.

Originality/value

This paper illustrates that normalizing scandalous food involves complexity and subtle changes. Shifts in messages are detected and analyzed using the related concepts of subsistence standards and practices of reciprocity.
Temperature-dependent hysteresis model for soft magnetic materials
Authors: Longhitano Maria Roberta , Sixdenier Fabien , Scorretti Riccardo , Krähenbühl Laurent , Geuzaine Christophe
Published: July 2019

Purpose

To understand the behavior of the magnetization processes in ferromagnetic materials in function of temperature, a temperature-dependent hysteresis model is necessary. This study aims to investigate how temperature can be accounted for in the energy-based hysteresis model, via an appropriate parameter identification and interpolation procedure.

Design/methodology/approach

The hysteresis model used for simulating the material response is energy-consistent and relies on thermodynamic principles. The material parameters have been identified by unidirectional alternating measurements, and the model has been tested for both simple and complex excitation waveforms. Measurements and simulations have been performed on a soft ferrite toroidal sample characterized in a wide temperature range.

Findings

The analysis shows that the model is able to represent accurately arbitrary excitation waveforms in function of temperature. The identification method used to determine the model parameters has proven its robustness: starting from simple excitation waveforms, the complex ones can be simulated precisely.

Research limitations/implications

As parameters vary depending on temperature, a new parameter variation law in function of temperature has been proposed.

Practical implications

A complete static hysteresis model able to take the temperature into account is now available. The identification is quite simple and requires very few measurements at different temperatures.

Originality/value

The results suggest that it is possible to predict magnetization curves within the measured range, starting from a reduced set of measured data.
The effect of social capital on exploratory and exploitative innovation
Authors: Duodu Bismark , Rowlinson Steve
Published: July 2019

Purpose

The purpose of this paper is to advance new insights into how internal and external social capital (SC) facets influence exploratory and exploitative innovation directly, and indirectly through absorptive capability (AC), by drawing on the relational and knowledge-based views.

Design/methodology/approach

The paper empirically tests the developed model using 135 survey responses from managers in construction contractor firms. Data were factor analysed, and path estimates determined using partial least squares structural equation modelling to test the hypotheses.

Findings

The results reveal that each social capital (SC) facet has direct benefits for both exploratory and exploitative innovation. The findings also show a mix of full and partial mediation paths between the facets of SC and innovation types through AC.

Originality/value

Extant research linking SC facets with innovation categories is fragmented. Added to this fragmentation is the dearth of studies linking both intra-firm and inter-firm SC with exploratory and exploitative innovation in firms. This paper makes a novel contribution by testing a model of the direct and indirect links (through AC) between internal and external SC and both exploratory and exploitative innovation in the context of construction contractor firms. The findings show how both facets of SC are necessary for exploratory and exploitative innovation. It reveals the types of relationships and capabilities necessary for specific innovation objectives.
Assessment of a South Africa national consultative workshop on the Protection of Personal Information Act (POPIA)
Authors: Netshakhuma Nkholedzeni Sidney
Published: July 2019

Purpose

This paper aims to assess the Protection of Personal Information Act (No. 4 of 2013) (POPIA) in South African (SA) universities sector with the objective to formulate code of conduct to improve compliance.

Design/methodology/approach

The case study approach was used in this study. Data were collected using interviews with the SA universities’ representatives during the POPIA consultative workshop.

Findings

The results showed that most of the participants were not aware of the POPIA, lack of collaboration between the legal practitioners, records managers and archivist. Internal control systems with Information Communication Technology (ICT) need to be in in place to provide information integrity and the value of international integrity with regard to the international students and staff.

Research limitations/implications

This paper is based on the first phase of the national consultative workshop with 25 SA public universities held between January and November 2018. The findings of the study are transferable to other sectors like health and infrastructure.

Practical implications

The findings are expected to be instrumental to the formulation of universities’ code of conduct in line with POPIA.

Social implications

The POPIA, if not properly implemented, can contribute to the violation of information integrity of the international students with regard to research and cultural exchange programme. Furthermore, it can affect SA trade relations with the European countries as it is a requirement for non- European countries to comply with the European Union General Data Protection Regulations (GDPR).

Originality/value

This study is useful to ensure consultation of the POPIA. Is also essential for the POPIA to be aligned with the international norms and standards such as GDPR.
Evolving landscape of scholarly journals in open access environment
Authors: Gul Sumeer , Gupta Sangita , Shah Tariq Ahmad , Nisa Nahida Tun , Manzoor Shazia , Rasool Rehana
Published: July 2019

Purpose

Open access journals (OAJs) offer immediate, free and unrestricted online access to the scholarly literature. The purpose of this study is to trace the status and characteristics of OAJs published across the globe. Various trends that have evolved in OAJ market have been studied.

Design/methodology/approach

The study is based on data collected from one of the largest OA journal directory – Directory of Open Access Journals (DOAJ). The data were downloaded on 02 January 2018 and details of OAJs added to DOAJ till 31 December 2018 were harvested, codified and further analyzed in SPSS software. A Microsoft-Excel template application – MAKESENS – developed by Finnish Meteorological Institute (Finland) in 2002, was explored to perform Mann–Kendall Test and Sen’s Slope Estimates.

Findings

A less score of OAJs offer access to their archival content. An increasing trend is witnessed in the OAJ publishing with Elsevier, Sciendo and BioMed Central (BMC) as the top publishers. Majority of publishers are from high-income zone countries, followed by upper-middle and lower-middle zone countries. Majority of OA publishers are from the UK, Indonesia and Brazil. A lesser score of journals offer article processing charges and/or author submission charges. Majority of OAJs from high- and lower-middle-income zone countries levy submission/processing charge to authors compared to OA journals from upper-middle- and lower-income zone countries (p < 0.01). OJS stays a prioritized platform for hosting OA journal content. Portico and CLOCKSS/LOCKSS are mostly used for long-term preservation purposes. Majority of OAJs from high-income zone countries participate in digital arching initiatives compared to ones from other income zones. Majority of the journals adopt a peer review (double-blind peer review, blind peer review, peer review and open peer review) process for validation of their scholarly content. The time lag between submission and publication ranges from one to 53 weeks, with majority of OAJs having a time lag of 11-20 weeks. Creative Commons Licenses are mainly adopted by OAJs.

Research limitations/implications

As the study is based on the data offered by DOAJ, any gaps in the DOAJ data will also get reflected in the study. Further, there might be other OAJs also that have yet to show compliance with DOAJ standards and get indexed with it.

Originality/value

The study tries to showcase the current status and characteristics of OAJs.
Critical success factors in library reengineering: a case of academic libraries in Kenya
Authors: Musangi Penninah Syombua , Odero Damaris , Kwanya Tom
Published: July 2019

Purpose

Academic libraries are reengineering their services to address the gap brought about by the convergence of physical and virtual information landscape. Despite the reengineering efforts, as many as 70 per cent of the libraries do not achieve the expected results. Certain critical success factors need to be in place for successful implementation. This paper aims to investigate the key success factors to service reengineering in an effort to establish their extent of application in university libraries in Kenya.

Design/methodology/approach

A multiple case study approach of six purposively selected private and public university libraries in Kenya based on Webometric ranking as an indicator of reengineering was used. Data were collected through face-to-face interviews with 30 librarians. The qualitative data collected were analyzed through content analysis.

Findings

The following key success factors were found to have been considered during reengineering: top management commitment, planning, provision of required resources, appropriate IT infrastructure, presence of skilled and competent staff, value of the library to the university and teamwork. Despite the central role of training, change management program and having a clear vision and objectives, university libraries in Kenya did not pay any attention to them as deserved. The authors conclude that university libraries in Kenya have not optimally achieved the desired reengineering results as a result of overlooking training and change management as critical success factors. The paper recommends that the identified critical success factors should be considered wholly not in isolation.

Research limitations/implications

The study was carried out among the top-ranked universities according to the January 2017 Webometric ranking; and therefore the findings may give a general indication of the critical success factors considered by university libraries in Kenya. However, this pre-condition may have locked out other libraries that may have made some recommendable strides in re-engineering their services.

Originality/value

This study has practical implications in identifying the critical success factors for library service reengineering to provide insights on the factors to consider as librarians reengineer library services.
The concept of organisational projectification: past, present and beyond?
Authors: Maylor Harvey , Turkulainen Virpi
Published: July 2019

Purpose

The purpose of this paper is to reflect on the past 25 years of the research on projectification, focusing especially on organisational aspects of projectification, as well as to discuss recent developments and potential future research directions.

Design/methodology/approach

This is a discussion paper, which draws on previously published research and data.

Findings

The first section identifies contexts in which projectification has taken place (projectification of) and the organisational process by which this has taken place (projectification through). Using an illustrative example based on publicly available data, the second section shows an extension of the organisational phenomenon, referred to as advanced organisational projectification. The paper concludes with a synthesised framework of organisational projectification.

Research limitations/implications

The paper provides a personal reflection and commentary and is focused on the conceptualisation of the term rather than an all-encompassing study of projectification. Based on the discussion, the paper presents a synthesised view of organisational projectification as well as directions for future research to advance the understanding of projectification.

Practical implications

The study has implications for policy-makers in the design of the process of ongoing projectification and provides illustrations and a warning concerning the assumptions that are made as an organisation advances in its projectification.

Originality/value

This paper provides an elaboration of one of the focal concepts of project studies, extending some of the key elements of project management research.
Prestige signals and heterogeneity of opinion regarding IPO values: Malaysian evidence
Authors: Albada Ali , Low Soo-Wah , Yong Othman
Published: July 2019

Purpose

The purpose of this paper is to examine the effects of prestige signals measured by the reputations of the underwriter, auditor and board size on the heterogeneity of investor belief about the true value of IPO in the Malaysian IPO market.

Design/methodology/approach

This study employs a sample of 281 IPOs issued between January 2000 and December 2015. The relationship between prestige signals and investor heterogeneity, measured by first-day price range of IPOs, is analysed using cross-sectional regression and quantile regression technique.

Findings

Of the three prestige signals, the findings show that only underwriter reputation and board size have significant negative relationships with IPO first-day price range. This implies that IPOs underwritten by reputable underwriters and issuing firms with larger board members have lower heterogeneity of opinion among investors. The findings also show that underwriter and auditor reputations have negative relationship with IPO initial return, suggesting that these prestige signals help to reduce IPO under-pricing, which is a direct cost of raising capital for the issuing firm. Furthermore, the results indicate that offer price, initial return, over-subscription ratio and private placement are associated with higher first-day price range. However, the findings on offer size suggest that larger IPO offer size is associated with lower first-day price range. Overall, the findings suggest that firm’s prestige signals reduce opinion heterogeneity among investors and that lower investors’ heterogeneity leads to lower IPO under-pricing cost for issuing firms.

Originality/value

Despite the importance of underwriter, auditor and board member reputations in signalling firm’s quality and reducing the level of information asymmetry of the listing firm’s issues, research on the effects of prestige signals on investor heterogeneity remains unexplored. This study investigates the role of prestige signals in influencing investors’ heterogeneity in Malaysia. The authors conjecture that underwriter, auditor and board member with higher reputations are associated with lower levels of opinion heterogeneity among IPO investors.
What works in fraud prevention: a review of real-world intervention projects
Authors: Prenzler Tim
Published: July 2019

Purpose

The purpose of this paper is to report on a search of criminology and related databases to identify fraud prevention intervention projects that showed promising achievements in reducing offences.

Design/methodology/approach

A keyword search of Criminal Justice Abstracts was supplemented by searches of related databases and case study repositories – conducted up to 31 May 2019. The paper includes some attention to indicators of “what doesn’t work” as well as “what might work” or “what should work”. Selection criteria were open about evidence, rather than exclusively applying strict scientific standards.

Findings

Overall, the literature is marked by inferences regarding what should work, based on diagnostics about opportunity factors in fraud and victim characteristics. In terms of evaluated intervention projects, only two were identified that met best practice scientific standards. However, a further 17 projects were included where there was some evidence of a likely benefit.

Research limitations/implications

Available evaluations of intervention projects are predominantly within-in group studies. Pre- and post-intervention time frames are often short, limited to one year or less; with only one follow-up study.

Practical implications

The findings demonstrate the need for applied experiments to build knowledge about effective fraud reduction strategies. The main lesson from the content of the 19 projects concerns the value of a situational crime prevention framework for designing and testing interventions, especially through enhancing rule setting, reducing anonymity, extending guardianship and formal surveillance, and facilitating compliance.

Originality/value

This appears to be the first systematic literature review of applied counter-fraud intervention projects.
High-functioning autistic children programming robotic behaviour
Authors: Lahav Orly , Talis Vadim , Shelkovitz Ravit , Horen Rona
Published: July 2019

Purpose

The purpose of this paper is to examine the ability of high-functioning autistic (HFA) children to programme robotic behaviour and sought to elucidate how they describe and construct a robot’s behaviour using iconic programming software.

Design/methodology/approach

The robotic learning environment is based on the iPad, an iconic programming app (KinderBot), and EV3. Two case studies, of A. and N., both HFA children of average age 10.5, are the focus of this research.

Findings

The research revealed how the participants succeeded in programming the behaviour of an “other” at different programming complexity levels (from simple action to combinations of states of two binary sensors and rule with subroutine). A transformation from procedural to declarative description was also found.

Practical implications

This research on the ability of HFA children to programme robotic behaviour yielded results that can be implemented in K-12 education. Furthermore, learning to programme robots and understand how robotic technologies work may help HFA children to better understand other technology in their environment.

Originality/value

In this research, the authors present an innovative approach that for the first time enables HFA children to “design” the behaviour of smart artefacts to use their sensors to adapt in accordance with the environment. For most HFA children, this would be the first opportunity to “design” the behaviour of the other, as opposed to oneself, since in most of their experience they have been largely controlled by another person.
The ordered weighted average corporate social responsibility
Authors: Velazquez-Cazares Marlenne G. , Leon-Castro Ernesto , Blanco-Mesa Fabio , Alvarado-Altamirano Segio
Published: July 2019

Purpose

The purpose of this paper is to identify new formulations for evaluating corporate social responsibility using different aggregation information operators.

Design/methodology/approach

The ordered weighted average (OWA) operator and its extensions, the induced OWA (IOWA) and prioritized OWA (POWA) operators are used to generate a new score for a Mexican enterprise with the corporate social responsibility (CSR) distinction.

Findings

The use of these operators allows for generation of different scenarios highlighting the relative importance of the elements. This information is useful for the government and companies to generate different evaluations depending on the specific characteristics of the region, state or municipality.

Originality/value

The use of aggregation operators in the traditional CSR formulation is presented. Likewise, the application of these new strategies to evaluate CSR is presented in a Mexican enterprise case to understand the steps that should be followed if the OWA operator and its extensions are to be used.
First-line managers dealing with different management approaches
Authors: Strömberg Annika , Engström Maria , Hagerman Heidi , Skytt Bernice
Published: July 2019

Purpose

The purpose of this paper is to contribute new knowledge about how first line managers (FLMs) in elderly care perceive their situation, with a focus on differences in management approaches at the intersection of the central and local parts of the organization.

Design/methodology/approach

The present study has a qualitative approach and is part of a larger project on FLMs in elderly care. The results presented here are based on a secondary analysis of 15 of the total of 28 interviews carried out in the project.

Findings

The main results are twofold: the majority of FLMs perceived differences in management approaches between local and central management; the differences caused some struggle because FLMs perceived that the management system did not support the differences. The two main aspects that caused the FLMs to struggle were differences in the foci of the management levels and difficulties in influencing the conditions of management.

Originality/value

The results contribute to the debate on what aspects are important to sustainable management of elderly care. It is common knowledge that FLMs have a complex position, intermediate to the central, upper level management and their subordinates at the local level – levels with different foci and interests. The study contributes new knowledge about what these differences consist of and the dilemmas they cause and offers suggestions as to what can be done to reduce both energy waste and the risk of low job satisfaction.
Extracting and applying evaluation criteria for ontology quality assessment
Authors: Kim Seonghun , Oh Sam G.
Published: July 2019

Purpose

The purpose of this paper is to formulate apposite criteria for ontology evaluation and test them through assessments of existing ontologies.

Design/methodology/approach

A literature review provided the basis from which to extract the categories relevant to an evaluation of internal ontology components. According to the ontology evaluation categories, a panel of experts provided the evaluation criteria for each category via Delphi survey. Reliability was gauged by applying the criteria to assessments of existing smartphone ontologies.

Findings

Existing research tends to approach ontology evaluation through comparison with well-engineered ontologies, implementation in target applications and appropriateness/interconnection appraisals in relation to raw data, but such methodologies fall short of shedding light on the internal workings of ontologies, such as structure, semantic representation and interoperability. This study adopts its evaluation categories from previous research while also collecting concrete evaluation criteria from an expert panel and verifying the reliability of the resulting 53 criteria.

Originality/value

This is the first published study to extract ontology evaluation criteria in terms of syntax, semantics and pragmatics. The results can be used as an evaluation index following ontology construction.
Web-based health information seeking
Authors: Rantala Annika , Enwald Heidi , Zinn Sandy
Published: July 2019

Purpose

The purpose of this paper is to examine differences of health information seeking among Finnish and South African university students. The focus is on weight management and on how students utilise various internet sources.

Design/methodology/approach

Data were collected with a web-based, structured survey by using convenience sampling. Descriptive statistics and Pearson’s χ2 test were utilised in the analysis.

Findings

Overall, health information was more often encountered than sought on purpose. Passive information seeking was more common for South African students as almost a third of them report encountering it several times a week. As an information source, South African students opted for social networking sites more frequently than search engines, the latter being the first choice for Finnish students. Discussion boards were more popular among South African students, and, on the other hand, web-based health calculators among Finns.

Research limitations/implications

This is a small-scale comparative study. The results are not to be generalised, but may provide clues about the information seeking differences between Finland and South Africa.

Practical implications

Media literacy, digital literacy and health information literacy of young adults should be emphasised so that they would be able to evaluate information for reliability and accuracy in order to help them make appropriate decisions when confronted by health information online.

Social implications

The implications of the study are that health providers and professionals should be more prominent on social media sites, which are popular ways for young people to discover information.

Originality/value

Comparative studies are rare. This comparison is between Finland, where internet penetration is 94 per cent, and South Africa, where internet penetration is 54 per cent.
Non-linear natural convection and mass transfer flow near a vertical moving porous plate with chemical reaction and Soret effect
Authors: Jha Basant Kumar , Nasir Sarki Muhammad
Published: July 2019

Purpose

The purpose of this paper is to conduct a theoretical study on steady fully developed non-linear natural convection and mass transfer flow past an infinite vertical moving porous plate with chemical reaction and thermal diffusion effect. Closed-form expressions for dimensionless velocity, concentration, Sherwood number and skin-friction are obtained by solving the present mathematical model.

Design/methodology/approach

The fully developed steady non-linear natural convection and mass transfer flow near a vertical moving porous plate with chemical reaction and thermal diffusion effect is investigated. The non-linear density variation and Soret effect were taken into consideration. The dimensionless velocity, temperature and concentration profiles were obtained in terms of exponential functions, and were used to compute the governing parameters, skin-friction and Sherwood number.

Findings

The effect of coefficient of the non-linear density variation with the temperature (NDT) and concentration (NDC) parameter, chemical reaction parameter, thermal diffusion parameter are discussed with the aid of line graphs and tables. The analysis of the result shows that the velocity as well as skin-friction having higher values in the case of non-linear variation of density with temperature and concentration in comparison to linear variation of density with temperature and concentration. It is observed that the velocity and skin-friction increase with an increase in the Soret parameter.

Originality/value

The aim of this paper is to extend the work of Muthucumaraswamy (2002) by incorporating the thermal diffusion (Soret) effect and non-linear density variation with temperature (NDT) and concentration (NDC), on which, to the best knowledge of the authors, no studies have been carried out.
Large-scale 3D printing technology based on the visual stitching method
Authors: Lv Jianran , Shen Hongyao , Fu Jianzhong
Published: July 2019

Purpose

3D printing for objects whose size exceeds the scope of the printer is still a tough challenge in application. The purpose of this paper is to propose a visual stitching large-scale (VSLS) 3D-printing method to solve this problem.

Design/methodology/approach

The single segmentation point method and multiple segmentation point method are proposed to adaptively divide each slice of the model into several segments. For each layer, the mobile robot will move to different positions to print each segment, and every time it arrives at the planned location, the contours of the printed segments are captured with a high-definition camera by the feature point recognition algorithm. Then, the coordinate transformation is implemented to adjust the printing codes of the next segment so that each part can be perfectly aligned. The authors print up layer by layer in this manner until the model is complete.

Findings

In Section 3, two specimens, whose sizes are 166 per cent and 252 per cent of the scope of the 3D-printing robot, are successfully printed. Meanwhile, the completed models of the specimens are printed using a suitable traditional printer for comparison. The result shows that the specimens in the test group have basically identical sizes to those in the control group, which verifies the feasibility of the VSLS method.

Originality/value

Unlike most of the current solutions that demand harsh requirement for positioning accuracy of the mobile robots, the authors use a camera to compensate for the lost positioning accuracy of the device during movement, thereby avoiding precise control to the device’s location. And the coordinate transformation is implemented to adjust the printing codes of the next sub-models so that each part can be aligned perfectly.
Boy Interrupted – Biographical disruption during the transition to adulthood
Authors: Wedgwood Nikki , Smith Louisa , Hendl Tereza , Shuttleworth Russell
Published: July 2019

Most studies on the gendered aspects of biographical disruption are predicated on adult experiences of chronic illness, often based on heterogeneous samples. This paper goes beyond typologies by analysing the life‐history case study of ‘Sam’, a 23‐year‐old Australian man raised in a refugee family, who developed a disabling chronic health condition at 15 years of age. The analysis illustrates how critical contextual factors like life‐phase, combine with powerful social structures like ethnicity and gender to shape Sam's experiences of, and responses to, biographical disruption. Even before the onset of any symptoms, Sam was railing against the marginal position he occupied in the Australian gender order as a young Asian man. With little guidance on how to adapt his biography to integrate his new differently functioning body, Sam's transition to adulthood stalls, and he becomes in effect, a boy interrupted.
Unusual and Fatal Case of an Undiagnosed Intravascular Large B‐cell Lymphoma: The Oncologist’s Great Imitator†
Authors: Barranco Rosario , Caputo Fiorella , Bedocchi Davide , Frigiolini Francesca Maria Elena , Castelletti Lara , Fraternali Orcioni Giulio , Ventura Francesco
Published: July 2019

Intravascular lymphoma (IVL) is a rare subtype of extranodal lymphomas that is characterized by the selective growth of neoplastic cells within the lumen of small vessels. Authors document the case of an unexpected death caused by an undiagnosed intravascular large B‐cell lymphoma with multi‐organ involvement, which had initially manifested as an infection and then as an unclarified central nervous system pathology. Histological examination showed a diffuse intravascular large B‐cell brain lymphoma with prominent cerebral involvement. The relevance of the case report reveals the importance of an autopsy of an extremely rare and threatening pathology that in most cases is diagnosed only postmortem. As a result, the role of the forensic pathologist becomes particularly important. When specifically performing an in‐depth autopsy evaluation with a specific histologic analysis, it is possible to identify the intravascular lymphoma and declare a more accurate cause of death.
Accuracy and Reproducibility of Bullet Trajectories in FARO Zone 3D
Authors: Liscio Eugene , Le Quan , Guryn Helen
Published: July 2019

With three‐dimensional (3D) laser scanning technology and software packages, the practice of documenting and measuring bullet trajectories has benefited from greater accuracy and reproducibility. This study investigated the accuracy and reproducibility of the bullet trajectory tools in the software package, FARO Zone 3D (FZ3D). Twelve participants were provided laser scanner data for 21 bullet trajectories on drywall panels with impact angles between 25° and 90°. When the impact plane was manually aligned by the operator, 75% of the absolute errors were within 0.91° and 0.98° for the azimuth and vertical angles, respectively. The vertical angle improved to 0.47° when impact plane alignment was taken with respect to gravity (no operator influence). Thus, manual alignment is shown to be subject to greater error than alignment with gravity. However, this study shows that the accuracy and reproducibility of the FZ3D bullet trajectory tools to be comparable with previous research studies.
Left lower lobectomy and partial preservation of segmental arteries of left upper lobe: A strategy to avoid pneumonectomy in selected cases
Authors: Amore Dario , Casazza Dino , Bergaminelli Carlo , Cicalese Marcellino , Massa Simona , Saglia Alessandro , Imitazione Pasquale , Rispoli Marco , Nespoli Moana , Curcio Carlo
Published: July 2019

In this article we report two cases of left lower lobe lung cancer undergoing a surgical procedure that allowed the preservation of lung parenchyma and avoided pneumonectomy. The first case concerned a left lower lobe non‐small cell lung cancer with extracapsular spread in a metastatic interlobar lymph node and the second a left lower lobe lung cancer with invasion of the pulmonary artery at the origin of lobar branches to the lower lobe. In both cases, a lung‐sparing surgical treatment was preferred and a left lower lobectomy was performed with division of lingular arteries and the interlobar artery, preserving the remaining arterial branches to the upper lobe.
Checking mask ventilation before neuromuscular block: A nation‐wide survey of anaesthetists’ attitudes and thinking
Authors: Saastamoinen Marcus , Larsson Jan , Frykholm Peter
Published: July 2019

Background

The value of checking mask ventilation before administering neuromuscular blocking drugs is still debated.

Method

We conducted a survey of the practice of anaesthetists in Sweden, first asking if they use a mask ventilation trial (MVT) as part of routine induction with intubation (not rapid sequence induction or expected difficult airway). We focused on the reasons for or against the MVT, probing the anaesthetists’ attitudes in general but also in specific scenarios.

Results

The response rate was 54%. We found that 65.1% routinely use a MVT, 21.4% sometimes do and 13.5% never do so. There was no effect for years of experience on the distribution. The most common reason for checking mask ventilation was “to gather information about the airway,” while the reason for not using the MVT was mostly “that muscle relaxation often improves mask ventilation.”

Conclusion

We found several interesting comments about airway management at both practical and theoretical levels. The survey highlights that routinely performing a MVT is a common practice in Sweden in spite of the lack of evidence for increased patient safety. Future airway guidelines may need to address this practice.