bluuebunny/crossref_metadata_2025_split huggingface dataset:
Teachers’ job satisfaction at well-performing, historically disadvantaged schools
Authors: Matla Shabe Jonas , Xaba Mgadla Ike 
Published: December 2019

Purpose
The purpose of this paper is to investigate the levels of the job satisfaction of teachers at historically disadvantaged secondary schools and to determine the correlation effects among job satisfaction dimensions as they relate to these teachers.

Design/methodology/approach
A quantitative survey design using Spector’s Job Satisfaction Survey was used, with 1,035 teachers from 30 secondary schools in the Sedibeng and Johannesburg South districts of the Gauteng Department of Education in the Gauteng Province of South Africa. Overall, 738 usable questionnaires were returned.

Findings
Teachers at well-performing, historically disadvantaged schools experience ambivalent job satisfaction levels. For this reason, they indicate satisfaction with supervision, co-workers and the nature of work; ambivalence with promotion, contingent rewards and communication; and no satisfaction with pay and operating conditions. Correlations between job satisfaction dimensions are significant. Their correlations indicate relationships that range between moderate and strong. While mostly indicating relationships of no practical effect, most of Herzberg’s hygiene factors are projected as strong moderating factors of job dissatisfaction as seen in relationships between dimensions reflecting hygiene factors and total job satisfaction.

Originality/value
This study pioneers the discourse on teacher job satisfaction at historically disadvantaged secondary schools, which still experience apartheid legacies: poor socio-economic conditions of their communities in South Africa. Strikingly, they consistently perform well in the National Senior Certificate – the basic education exit point. Lessons for educational management and policy practice can be learnt from these secondary schools, including lessons for underperforming schools’ leadership.
Warehouse configuration in omni-channel retailing: a multiple case study
Authors: Kembro Joakim Hans , Norrman Andreas 
Published: December 2019

Purpose
The purpose of this study is to explore warehouse configuration in omni-channel retailing.

Design/methodology/approach
A multiple case study is conducted with six large omni-channel retailers from three different sectors.

Findings
The study shows an increase in the number, variation and frequency of flows passing through omni-channel warehouses. Along with an increased variety of stock keeping units (including singles vs multipacks), there is an increase in the complexity of planning and coordination of order fulfillment. Retailers test a mix of different solutions for storage and picking and partly shift focus to advanced sorting operations. The companies already have or plan to invest in substantial automation systems, which emphasize the importance of capturing and using accurate master data.

Research limitations/implications
The study highlights the need to understand the interrelations and co-development of configuration elements in omni-channel warehousing. The findings also suggest that a successful transformation requires increased collaboration with upstream and downstream partners. Conceptual models are developed to illustrate strategies and development paths in omni-channel warehousing, and suggestions for future research are summarized in a research agenda. A research limitation is the focus on Swedish retailers in three sectors (fashion, consumer electronics and DIY/construction material). Future studies can include additional sectors, extend the geographical scope and explore cross-regional differences.

Practical implications
As one of the few deeper case studies on omni-channel warehousing, practitioners will find new configurations described and analyzed here. Along with conceptual models, a synthesis of challenges and potential solutions are presented to support retailers’ practical analysis and decision making.

Originality/value
This is one of the first multiple case studies that go deeper into omni-channel warehouse configuration, which is of increasing importance to both scholars and practitioners in the field.
The impact of smoke from grilled fish on the hematological parameters of Indonesian grilled fish sellers
Authors: Purbayanti Dwi , Ardina Rinny , Ardhany Syahrida Dian , Gunawan Rudi , Pratama Mohammad Rizki Fadhil 
Published: December 2019

Purpose
Fish processing by grilling can produce emissions that contain toxic compounds that can have short- and long-term effects on human health. Another study reported that exposure to air pollutants is hematotoxic. The purpose of this paper is to determine the effect of smoke exposure on fish grill results on hematological parameters.

Design/methodology/approach
The subjects of this study were 90 grilled fish sellers, with 32 processed food sellers who did not sell grill food as a control. The hematological analysis was performed using the Hematology Analyzers KX300 instrument.

Findings
The results showed that the mean value of hematological parameters in the test group was higher than the control group except for the number of lymphocytes and mixed cell parameters.

Originality/value
The content of harmful compounds contained in fish grill smoke can increase hematological value in the blood of exposed individuals, which has the potential for health problems and disease progression.
An investigation of biases in web search engine query suggestions
Authors: Bonart Malte , Samokhina Anastasiia , Heisenberg Gernot , Schaer Philipp 
Published: December 2019

Purpose
Survey-based studies suggest that search engines are trusted more than social media or even traditional news, although cases of false information or defamation are known. The purpose of this paper is to analyze query suggestion features of three search engines to see if these features introduce some bias into the query and search process that might compromise this trust. The authors test the approach on person-related search suggestions by querying the names of politicians from the German Bundestag before the German federal election of 2017.

Design/methodology/approach
This study introduces a framework to systematically examine and automatically analyze the varieties in different query suggestions for person names offered by major search engines. To test the framework, the authors collected data from the Google, Bing and DuckDuckGo query suggestion APIs over a period of four months for 629 different names of German politicians. The suggestions were clustered and statistically analyzed with regards to different biases, like gender, party or age and with regards to the stability of the suggestions over time.

Findings
By using the framework, the authors located three semantic clusters within the data set: suggestions related to politics and economics, location information and personal and other miscellaneous topics. Among other effects, the results of the analysis show a small bias in the form that male politicians receive slightly fewer suggestions on “personal and misc” topics. The stability analysis of the suggested terms over time shows that some suggestions are prevalent most of the time, while other suggestions fluctuate more often.

Originality/value
This study proposes a novel framework to automatically identify biases in web search engine query suggestions for person-related searches. Applying this framework on a set of person-related query suggestions shows first insights into the influence search engines can have on the query process of users that seek out information on politicians.
Legitimacy and relevance of a performance measurement system in a Finnish public-sector case
Authors: Mättö Toni , Anttonen Jenna , Järvenpää Marko , Rautiainen Antti 
Published: December 2019

Purpose
This study investigates the difficulties involved in translating stakeholder expectations into action and maintaining legitimacy through the use of a performance measurement system (PMS) created in a Finnish regional development company (RDC). This longitudinal case study illustrates the fluctuating and socially constructed nature of legitimacy in the public sector.

Design/methodology/approach
This qualitative case study longitudinally analyzes the various developments occurring during and after the development of a PMS system for the case organization. Empirical data include interviews, workshops, observation and other materials relating to the case organization.

Findings
The initial interest in operational improvement changed to legitimation-seeking behavior by the case organization when the measures created were modified to accord with the changed preferences of the key stakeholders. However, the pursuit of legitimacy for the RDC was made difficult by the outcome-oriented, changing and contradictory nature of stakeholders’ demands. This study’s findings reveal a continuous mismatch between organizational activities and the board’s expectations, leading to the eventual closure of the organization.

Practical implications
The findings help to analyze the legitimacy and relevance of PMSs in public-sector projects. The study highlights the practical importance of analyzing the different legitimacy priorities of various stakeholder groups, such as politicians and entrepreneurs.

Originality/value
The study analyzes the fluctuating nature of legitimacy longitudinally in the public-sector context from the stakeholder perspective. This study analyzes a situation where the stakeholders’ evaluations of the legitimacy of the organization, and the PMS developed, change over time, complicating the accounting for stakeholders.
Impact of Custodiol‐N cardioplegia on acute kidney injury after cardiopulmonary bypass
Authors: Feirer Nina , Dieterlen Maja‐Theresa , Klaeske Kristin , Kiefer Philipp , Oßmann Susann , Salameh Aida , Borger Michael A. , Hoyer Alexandro 
Published: December 2019

AbstractMyocardial protection during cardiopulmonary bypass (CPB) can be achieved using cardioplegic solutions. Although, acute kidney injury (AKI) is a common complication following CPB, the effects of cardioplegic solutions on AKI have rarely been investigated. Within this study, the effects of the cardioplegic solutions histidine‐tryptophan‐ketoglutarate (HTK; Custodiol) and HTK‐N (Custodiol‐N) on AKI in a large animal model were compared. Therefore, Landrace pigs underwent median sternotomy, CPB at 34°C, 90 minutes of cardiac arrest and 120 minutes of reperfusion. Animals were randomized for single‐shot cardioplegia with either HTK (n = 10) or HTK‐N (n = 10). Renal biopsies and sera were analyzed to determine AKI biomarkers and apoptosis. Compared to HTK, HTK‐N induced a decreased extent of proximal tubule swelling (48.3 ± 1.6 µm vs 52.3 ± 1.1 µm, P = .05) and decreased cytochrome c release (0.26 ± 0.04 vs 0.46 ± 0.08, P = .04) without reaching statistical significance due to Bonferroni correction. Comparing baseline and postreperfusion levels, the hemoglobin (Hb) and blood calcium levels were lower in HTK‐N (Hbbaseline: 6.0 ± 0.6 mmol/L, Hbreperfusion: 6.2 ± 0.7 mmol/L, P = .12; Ca2+baseline: 1.36 ± 0.05 mmol/L, Ca2+reperfusion: 1.28 ± 0.05 mmol/L, P = .16) compared to the HTK group (Hbbaseline: 5.9 ± 0.4 mmol/L, Hbreperfusion: 4.7 ± 0.8 mmol/L, P < .01; Ca2+baseline: 1.34 ± 0.07 mmol/L, Ca2+reperfusion: 1.24 ± 0.06 mmol/L, P < .01). The present study showed that HTK‐N could positively affect the kidney during CPB. Hb and calcium levels were stabilized. A statistical trend was found showing that AKI‐related proximal tubule swelling and cytochrome c release were diminished.
A systematic review of the effects of oleoylethanolamide, a high‐affinity endogenous ligand of PPAR‐α, on the management and prevention of obesity
Authors: Tutunchi Helda , Saghafi‐Asl Maryam , Ostadrahimi Alireza 
Published: December 2019

AbstractAlong with an increase in overweight and obesity among all age groups, the development of efficacious and safe anti‐obesity strategies for patients, as well as health systems, is critical. Oleoylethanolamide (OEA), a high‐affinity endogenous ligand of nuclear receptor peroxisome proliferator‐activated receptor alpha (PPAR‐α), plays important physiological and metabolic actions. OEA is derived from oleic acid, a monounsaturated fatty acid, which has beneficial effects on body composition and regional fat distribution. The role of OEA in the modulation of food consumption and weight management makes it an attractive molecule requiring further exploration in obesogenic environments. This systematic review was conducted to assess the effects of OEA on the obesity management, with emphasizing on its physiological roles and possible mechanisms of action in energy homeostasis. We searched PubMed/Medline, Google Scholar, ScienceDirect, Scopus, ProQuest, and EMBASE up until September 2019. Out of 712 records screened, 30 articles met the study criteria. The evidence reviewed here indicates that OEA, an endocannabinoid‐like compound, leads to satiation or meal termination through PPAR‐α activation and fatty acid translocase (FAT)/CD36. Additionally, the lipid‐amide OEA stimulates fatty acid uptake, lipolysis, and beta‐oxidation, and also promotes food intake control. OEA also exerts satiety‐inducing effects by activating the hedonic dopamine pathways and increasing homeostatic oxytocin and brain histamine. In conclusion, OEA may be a key component of the physiological system involved in the regulation of dietary fat consumption and energy homeostasis; therefore, it is suggested as a possible therapeutic agent for the management of obesity.
Effects of hydrogen sulphide on oxidative stress, inflammatory cytokines, and vascular remodelling in l‐NAME‐induced hypertension
Authors: Abd Allah Eman S. H. , Ahmed Marwa A. , Makboul Rania , Abd El‐Rahman Mona A. 
Published: December 2019

AbstractThis study was designed to evaluate the protective effects of hydrogen sulphide (H2S) against NG‐Nitro l‐Arginine Methyl Ester (l‐NAME)‐induced hypertension and its possible effects on the inflammatory process, oxidative stress, and vascular remodelling in rats. Forty male Wistar Albino rats were assigned to four equal groups: the control group, the H2S control group, the hypertensive group, and the treated group, which received concomitant treatment with sodium hydrosulphide (NaHS) and l‐NAME. Systolic blood pressure (SBP) was measured weekly. Serum levels of nitric oxide (NO), total peroxide, and total antioxidant capacity (TAC) were measured and the oxidative stress index (OSI) was calculated. Aortic weight and length were measured and the aortic weight/length ratio determined. Aortic fold expression of interferon‐γ (IFN‐γ) and vascular cell adhesion molecule‐1 (VCAM‐1) mRNA was measured using qPCR. Aortic media thickness and elastin content were measured morphometrically. l‐NAME administration increased SBP, serum levels of total peroxide and OSI, but reduced serum levels of NO and TAC. Aortic fold expression of IFN‐γ and VCAM‐1 mRNA, aortic weight, aortic weight/length ratio, aortic media thickness, and elastin area percentage were increased in the hypertensive group. Concurrent administration of l‐NAME and H2S attenuated these changes. Thus, H2S could attenuate the increase in ABP through restoration of the NO level, reduction in the oxidative state, and attenuation of the inflammatory process, thereby reduced vascular remodelling.
Environmental conditions steer phenotypic switching in acute hepatopancreatic necrosis disease‐causing Vibrio parahaemolyticus, affecting PirAVP/PirBVP toxins production
Authors: Kumar Vikash , Roy Suvra , Baruah Kartik , Van Haver Delphi , Impens Francis , Bossier Peter 
Published: December 2019

SummaryBacteria in nature are widely exposed to differential fluid shears which are often a trigger for phenotypic switches. The latter mediates transcriptional and translation remodelling of cellular metabolism impacting among others virulence, antimicrobial resistance and stress resistance. In this study, we evaluated the role of fluid shear on phenotypic switch in an acute hepatopancreatic necrosis disease (AHPND)‐causing Vibrio parahaemolyticus M0904 strain under both in vitro and in vivo conditions. The results showed that V. parahaemolyticus M0904 grown at lower shaking speed (110 rpm constant agitation, M0904/110), causing low fluid shear, develop cellular aggregates or floccules. These cells increased levan production (as verified by concanavalin binding) and developed differentially stained colonies on Congo red agar plates and resistance to antibiotics. In addition, the phenotypic switch causes a major shift in the protein secretome. At 120 rpm (M0904/120), PirAVP/PirBVP toxins are mainly produced, while at 110 rpm PirAVP/PirBVP toxins production is stopped and an alkaline phosphatase (ALP) PhoX becomes the dominant protein in the protein secretome. These observations are matched with a very strong reduction in virulence of M0904/110 towards two crustacean larvae, namely, Artemia and Macrobrachium. Taken together, our study provides substantial evidence for the existence of two phenotypic forms in AHPND V. parahaemolyticus strain displaying differential phenotypes. Moreover, as aerators and pumping devices are frequently used in shrimp aquaculture facilities, they can inflict fluid shear to the standing microbial agents. Hence, our study could provide a basis to understand the behaviour of AHPND‐causing V. parahaemolyticus in aquaculture settings and open the possibility to monitor and control AHPND by steering phenotypes.
Anammox and beyond
Authors: Kuenen J. Gijs 
Published: December 2019

SummaryWhen looking back and wonder how we did it, I became even more aware of how my wanderings in microbiology are all linked, from the start of my PhD with Hans Veldkamp on sulphur‐oxidizing bacteria in chemostats. My interests broadened from obligate chemolithoautotrophic bacteria to facultative organisms and the question about the ecological niches of these different metabolic types. The sulphide oxidizing bacteria also may be used to produce elemental sulphur, which can easily be removed from wastewater. This fitted in a long‐standing collaboration with Dimitry Sorokin on the ecophysiology and application of alkaliphilic sulphur bacteria. Then came the denitrifying sulphur‐oxidizing bacteria and their application to remove sulphide from wastewater, which lead to our interest in nitrate, nitrite and ammonium removal in general. The big surprise was the serendipitous discovery of the ‘anammox’‐process, whereby ammonium is anaerobically oxidized to dinitrogen gas with nitrite as electron acceptor. The early days of our anammox research are the main focus of this article, which describes the struggle of growing and identifying the most peculiar bacteria we ever came across. A specialized organelle, the anammoxosome was shown to be responsible for the key ammonium oxidation, whereby a rocket fuel, hydrazine, turned out to be an intermediate. Soon after we became aware that anammox is everywhere and in the marine environment makes up a major portion of the nitrogen cycle. The intense scientific collaboration with Mike Jetten and Mark van Loosdrecht and colleagues led to our further understanding and application of this fascinating process, which is briefly summarized in this article. My broader interest in environmental microbiology and microbial ecology has been a regularly returning theme, taking me all over the world to great collaborations lasting to this very day.
Biological inhibition of soil nitrification by forest tree species affects Nitrobacter populations
Authors: Laffite Amandine , Florio Alessandro , Andrianarisoa Kasaina Sitraka , Creuze des Chatelliers Charline , Schloter‐Hai Brigitte , Ndaw Sidy M. , Periot Charlotte , Schloter Michael , Zeller Bernd , Poly Franck , Le Roux Xavier 
Published: December 2019

SummarySome temperate tree species are associated with very low soil nitrification rates, with important implications for forest N dynamics, presumably due to their potential for biological nitrification inhibition (BNI). However, evidence for BNI in forest ecosystems is scarce so far and the nitrifier groups controlled by BNI‐tree species have not been identified. Here, we evaluated how some tree species can control soil nitrification by providing direct evidence of BNI and identifying the nitrifier group(s) affected. First, by comparing 28 year‐old monocultures of several tree species, we showed that nitrification rates correlated strongly with the abundance of the nitrite oxidizers Nitrobacter (50‐ to 1000‐fold changes between tree monocultures) and only weakly with the abundance of ammonia oxidizing archaea (AOA). Second, using reciprocal transplantation of soil cores between low and high nitrification stands, we demonstrated that nitrification changed 16 months after transplantation and was correlated with changes in the abundance of Nitrobacter, not AOA. Third, extracts of litter or soil collected from the low nitrification stands of Picea abies and Abies nordmanniana inhibited the growth of Nitrobacter hamburgensis X14. Our results provide for the first time direct evidence of BNI by tree species directly affecting the abundance of Nitrobacter.
Feasibility study for implementation of resuscitative balloon occlusion of the aorta in peri‐arrest, exsanguinating trauma at an adult level 1 Australian trauma centre
Authors: Fitzgerald Mark , Lendrum Robbie , Bernard Stephen , Moloney John , Smit De Villiers , Mathew Joseph , Kim Yesul , Nickson Chris , Lin Richard M‐H , Yeung Meei , Bystrzycki Adam , Niggemeyer Louise , Hendel Simon , Mitra Biswadev 
Published: December 2019

AbstractObjectiveThis prospective, observational, interventional study sought to determine if the introduction of resuscitative balloon occlusion of the aorta (REBOA) at an Australian adult major trauma centre would improve survival for major trauma patients.MethodsPatients aged 18–60 years, transported directly from scene with exsanguinating, sub‐diaphragmatic haemorrhage and hypovolaemic shock (systolic BP <70 mmHg or hypovolaemic cardiac arrest) were eligible for recruitment and followed up until hospital discharge (ACTRN12618000550202).ResultsDuring the 14‐month study period (17 January 2015 to 12 March 2016) 3032 patients were admitted direct from scene with an overall mortality of 97 (3.71%). Of these patients 3019 had trauma centre vital signs recorded in the data set (99.57%) and 1523 were between the ages of 18–60, including 143 patients with a shock index of >1.0 (4.74%). There were 13 (0.43%) patients with a systolic BP <70 mmHg and/or cardiorespiratory arrest on arrival. The mortality in this group was six out of 13 (46.15%). Of these 13 patients, there were two (0.07% of the total cohort) where REBOA was attempted. There were no eligible patients for whom REBOA was achieved. None of the six patients who died would have benefited from REBOA deployment.ConclusionsDespite considerable training and resource allocation to ensure 24‐h availability, the introduction of REBOA failed to effectively demonstrate any impact on patient outcome. Despite retrospective literature supporting the introduction of REBOA, in this 14‐month prospective study there was no evidence of benefit. Further studies may define indications and subgroups of patients who may benefit.