bluuebunny/crossref_metadata_2025_split huggingface dataset:
More than just managerial self-efficacy: conceptualizing and predicting top managers' means efficacy about the organization under extreme events
Authors: Zhang Fengxiu , Welch Eric W. 
Published: July 2021

PurposeThis study extends the concept of managerial efficacy to include managerial means efficacy (MME) attributed to the utility and quality of means external to managers for performing a task. Focusing on its antecedents, the authors theorize and empirically test MME sourced from the organization (MMEO) and situate the examination under extreme events.Design/methodology/approachThis study uses a 2016 national survey of 892 top managers in 273 US largest transit agencies covering 82% of the entire population. Participants report their confidence for their organization to perform effectively under various extreme events. The survey data are matched with data from various institutional data sources to capture organizational characteristics, operations and experience with extreme events.FindingsFindings suggest that organizational-level factors influence MMEO. Specifically, organizational slack and relationship management of key jurisdictional stakeholders positively predict MMEO, whereas political fragmentation is negatively associated with MMEO.Practical implicationsOrganizations can bolster MMEO, hence, managerial efficacy through developing organizational slack and engaging in relationships building with jurisdictional stakeholders. Those initiatives have particular importance for those with boundary-spanning service areas.Originality/valueThe study advances understanding of managerial efficacy by directing attention to means external to managers' self. It also brings clarity to the notion of “confident managers” or “managerial confidence” broadly applied in previous studies. Findings provide insights about capacity-building interventions to build managerial efficacy through improving external means, circumventing the need to alter self-efficacy that is typically stable and resistant to change.
Celebrity selection in social media ecosystems: a flexible and interactive framework
Authors: Shukla Shekhar , Dubey Ashish 
Published: July 2021

PurposeQuantitative objective studies on the problem of celebrity selection are lacking. Furthermore, existing research does not recognize the group decision-making nature and the possibility of customer involvement in celebrity or influencer selection for social media marketing. This study conceptualizes celebrity selection as a multi-attribute group decision-making problem while deriving the final ranking of celebrities/influencers using interactive and flexible criteria based on the value tradeoff approach. The article thus proposes and demonstrates a quantitative objective method of celebrity selection for a brand or campaign in an interactive manner incorporating customer's preferences as well.Design/methodology/approachEach decision-maker's preferences for celebrity selection criteria are objectively captured and converted into an overall group preference using a modified generalized fuzzy evaluation method (MGFEM). The final ranking of celebrities is then derived from an interactive and criteria-based value tradeoff approach using the flexible and interactive tradeoff method.FindingsThe approach gives a different ranking of celebrities for two campaigns based on group members' perceived importance of the selection criteria in different scenarios. This group includes decision-makers (DMs) from the brand, marketing communication agency and brand's customers. Further, each group member has an almost equal say in the decision-making based on fuzzy evaluation and an interactive and flexible value tradeoff approach to celebrity selection for receiving a rank order.Research limitations/implicationsThe approach uses secondary data on celebrities and hypothetical scenarios. Comparison with other methods is difficult, as no other study proposes a multi-criteria group decision-making approach to celebrity selection especially in a social media context.Practical implicationsThis approach can help DMs make more informed, objective and effective decisions on celebrity selection for their brands or campaigns. It recognizes that there are multiple stakeholders, including the end customers, each of whose views is objectively considered in the aspects of group decision-making through a fuzzy evaluation method. Further, this study provides a selection mechanism for a given context of endorsement by objectively and interactively encapsulating stakeholder preferences.Originality/valueThis robust and holistic approach to celebrity selection can help DMs objectively make consensual decisions with partial or complete information. This quantitative approach contributes to the literature on selection mechanisms of influencers, celebrities, social media opinion leaders etc. by providing a methodological aid that encompasses aspects of interactive group decision-making for a given context. Moreover, this method is useful to DMs and stakeholders in understanding and incorporating the effect of nature or context of the brand and the campaign type in the selection of a celebrity or an influencer.
Prediction of nanosilver and dye content on silk fabric using a scanner-based artificial intelligence technique
Authors: Shams Nateri Ali , Hasanlou Elham , Hajipour Abbas 
Published: July 2021

Purpose
This paper aims to investigate using scanner-based adaptive neuro-fuzzy inference system (ANFIS), artificial neural networks (ANNs) and polynomial regression methods for prediction of silver nanoparticles (AgNPs) and dye concentrations on AgNP-treated silk fabrics.

Design/methodology/approach
For estimation of the dye and AgNPs concentration using image processing, the silk fabrics were scanned under the condition of 200 pixels per inch. The red green blue (RGB) values of scanned images were obtained after applying the median filter. Then, the relationship between scanner RGB values and dye and AgNPs concentrations were obtained by using artificial intelligence methods such as ANFIS and ANNs.

Findings
The best result was achieved by the ANFIS system for calculation concentration of dye with 0.07% error and concentration of AgNPs with 0.008 (gr/l) error. The obtained results indicate that the performance of the ANFIS system method is better than the other methods.

Originality/value
Using a scanner-based artificial intelligence technique for prediction of nanosilver and dye content on silk fabric.
Do we always drink the same coffee? The effect of weight and colour on takeaway coffee perception
Authors: Sakarya Asli , Dortyol Ibrahim Taylan 
Published: July 2021

Purpose
Beverage serving affects consumers’ taste and price perceptions. Therefore, the correct selection of the presentation cues is essential when a consumer evaluates a product. This study aims to determine how haptic (weight) and visual (colour) cues of drinking vessels affect the taste and price perception of coffee.

Design/methodology/approach
The authors created three different experimental designs. Given that coffee is a popular drink among the younger population, the authors invited undergraduate students in the 18–24 age group into this study. The participants tasted the same coffee from cups differ in weight (heavy and normal) and colour (congruent, incongruent and neutral), after which their opinions about the taste and price were recorded.

Findings
According to the results, increasing the weight of the cup creates a more positive perception of the smell and density of the coffee. Moreover, coffee served in a heavy cup was perceived to be more expensive than in other cups. The authors also found that incongruent cups received a lower score in all evaluations regarding taste perception. In the final experiment, the authors used the weight and colour manipulations together. According to the participants, the most fragrant coffee was perceived from a heavy and congruent cup.

Research limitations/implications
Small sample is one of the limitations of this study. Future studies could be conducted with bigger and more diverse sample using different kinds of coffee beans.

Practical implications
It will be appropriate for coffee producers to design the cups in light of the said results.

Originality/value
The paucity in the existing literature of sensory marketing studies using hot drinks is remarkable, especially takeaway coffee, which is becoming more popular with an increasing number of coffee chains, and needs to be examined in detail.
Possible involvement of zinc deficiency in epidermal growth factor receptor inhibitor‐induced xerotic dermatitis
Authors: Tohyama Mikiko , Sakaguchi Chihiro , Nishina Tomohiro , Hyodo Ichinosuke 
Published: July 2021

AbstractCancer treatment with epidermal growth factor receptor inhibitors (EGFRIs) often induces severe xerotic dermatitis. Various irritants facilitate development of dermatitis in xerotic skin. As zinc deficiency plays a role in the development of irritant dermatitis, we measured serum zinc levels in 25 patients with xerotic dermatitis due to treatment with EGFRIs. Of these patients, nine were treated with EGFR tyrosine kinase inhibitors and 16 were treated with anti‐EGFR antibody alone or in combination with other anticancer agents. Serum zinc levels of all patients were lower than the normal range of >80 μg/dL, with a mean ± SD serum zinc level of 56.4 ± 11.7 μg/dL. These were correlated with serum magnesium levels in patients. As the serum magnesium level is known to be reduced by the inhibition of EGFR, a similar mechanism may also be involved in decreasing the serum zinc level. Among 21 patients treated with zinc supplementation for more than 2 months, xerotic dermatitis markedly improved, with an increase of serum zinc levels in 16 patients. The other five patients exhibited no significant improvement in their skin condition, and insufficient and unstable increase in serum zinc levels. In conclusion, zinc supplementation may be beneficial in supportive care for patients with EGFRI‐induced xerotic dermatitis.
Urban street lighting differentially affects community attributes of airborne and ground‐dwelling invertebrate assemblages
Authors: Lockett Martin T. , Jones Therésa M. , Elgar Mark A. , Gaston Kevin J. , Visser Marcel E. , Hopkins Gareth R. 
Published: July 2021

Abstract

The introduction of artificial light at night (ALAN) into natural and urbanised landscapes is a known and highly pervasive disruptor of invertebrate communities. However, the effect of variation in intensity and spectra of ALAN on invertebrate communities inhabiting different spatial niches is little understood. Further, the remarkable ability of ALAN to continue to disrupt biodiversity even in chronically illuminated urban landscapes is not often acknowledged.

Here, we simultaneously sampled airborne and ground‐dwelling invertebrate assemblages under and between urban street lights to explore the effects on community composition and abundance of (a) proximity to decadal (i.e. long‐illuminated) nocturnal street lighting and (b) variation in the spectral output of light.

The two assemblages responded differently. For airborne invertebrates, night‐time abundance doubled, and night‐time assemblage composition was significantly different for traps under, compared with between, street lights. These differences in abundance were not affected by street light intensity, and were absent in day samples, suggesting that even weak ALAN may be causing short‐term redistribution of nocturnal invertebrates. Further, the abundance (but not composition) effects of ALAN on airborne invertebrates increased when the street lights emitted a higher proportion of short‐wavelength light.

In contrast, for ground‐dwelling invertebrates, we found only marginal effects of proximity and spectrum of lighting on abundance and no effect on assemblage composition. However, more intense street lighting reduced abundance and altered composition at traps both under and between lights.

Synthesis and Applications. Public lighting managers must consider ALAN impacts on invertebrate communities not only when introducing ALAN to naïve environments, but also when changing lighting in areas that are highly urbanised and exposed to decades of ALAN. Further, lighting proposals and environmental monitoring of invertebrate communities must take into account the effects on both ground‐dwelling and airborne assemblages, as these may respond very differently to the presence, intensity and spectrum of ALAN.
Agricultural intensification erodes taxonomic and functional diversity in Mediterranean olive groves by filtering out rare species
Authors: Tarifa Rubén , Martínez‐Núñez Carlos , Valera Francisco , González‐Varo Juan P. , Salido Teresa , Rey Pedro J. 
Published: July 2021

Abstract

Agri‐Environmental Schemes (AES) have been proposed to mitigate the impact of agriculture on both taxonomic and functional biodiversity. However, a better knowledge of the mechanisms involved in the loss of agrobiodiversity is needed to implement efficient AES. An unbalanced effort on research towards arable lands compared to permanent crops, and on fauna relative to plants, is patent, which limits the generalization of AES effectiveness.

We evaluated the effects of agricultural management and landscape simplification on taxonomic and functional diversity of the ground herb cover of 40 olive groves. We use a recently developed approach based on Hill numbers (rare, common and dominant species based) to analyse taxonomic and functional dissimilarity between farms with contrasting agricultural practices, and its potential attenuation by landscape complexity. We further explore the filtering effect of agricultural intensification on functional traits, and the relationship between functional and species richness across landscapes.

We found that taxonomic and functional dissimilarity of herb assemblages between intensively and low‐intensively managed fields was mainly due to rare species. Dissimilarity decreased as landscape complexity increased, evidencing that complex landscapes attenuate the impact of agriculture intensification on herb assemblage composition. Agricultural intensification favoured more functionally homogeneous assemblages and disfavoured the herbs pollinated by insects, while it did not seem to affect wind‐pollinated species.

Overall, functional richness increased exponentially with species richness across landscapes, but the latter was insufficient to drive any clear enhancement in functional richness in simple landscapes. In contrast, high species richness accelerated the enhancement in functional richness in intermediate and complex landscapes. These results highlight the functional filtering that intensive agriculture has generated for decades in homogeneous olive‐dominated landscapes.

Synthesis and applications. Herb cover is essential to support the fauna of permanent croplands and their sustainable production. Hence, Agri‐Environmental Schemes (AES) in these croplands should promote management practices favouring the diversity and functionality of herb assemblages. Such AES should be particularly prioritized in homogeneous landscapes, where ground herb cover composition and function has long been homogenized to a great extent.
Reflections on the aconitine poisoning
Authors: Ya Yang , Zhixiang Zhang , Chao Liu , Wei Zhao , Zhiyong Wang , Huafeng Cheng , Shaohua Zhu , Hongfei Xu 
Published: July 2021

AbstractAconitine is a natural toxic substance belonging to the family of aconitum alkaloids, which is used in small doses by Traditional Chinese practitioners. We present a case of accidental death due to acute aconitine poisoning. A 65‐year‐old Chinese man presented to a medical clinic with fever and shoulder pain. Soon after administration of intravenous ceftriaxone, a bottle of Chinese medicinal wine was administered. The man rapidly experienced headache, hearing loss and tinnitus, nausea, diarrhea, numbness of the lips, tongue, face, and the upper and lower extremities, cold sweat, fall of blood pressure, and discomfort of the entire body, and he died on the same day. Postmortem examination showed cyanosis of the nail beds, severe congestion in lungs and other organs, bilateral pleural effusions, and infiltration of basophils in the intestinal submucosa. No significant increase of IgE was found in the blood. Toxicological analysis detected aconitine in the medicinal wine, blood, and stomach contents by liquid chromatography–tandem mass spectrometry (LC‐MS⁄MS). Aconitine was quantified in cardiac blood as 16.4 ng/ml, and in stomach contents (63.8 ng/ml) and wine sample (10.1 ug/ml). The cause of death was aconitine poisoning. This case report highlights the danger of aconitine. LC‐MS⁄MS has the advantages of high analytic speed, sensitivity, and accuracy. It would be desirable for the government to control the use of aconitine‐containing herbal extracts.
Improving metabarcoding taxonomic assignment: A case study of fishes in a large marine ecosystem
Authors: Gold Zachary , Curd Emily E. , Goodwin Kelly D. , Choi Emma S. , Frable Benjamin W. , Thompson Andrew R. , Walker Harold J. , Burton Ronald S. , Kacev Dovi , Martz Lucas D. , Barber Paul H. 
Published: July 2021

AbstractDNA metabarcoding is an important tool for molecular ecology. However, its effectiveness hinges on the quality of reference sequence databases and classification parameters employed. Here we evaluate the performance of MiFish 12S taxonomic assignments using a case study of California Current Large Marine Ecosystem fishes to determine best practices for metabarcoding. Specifically, we use a taxonomy cross‐validation by identity framework to compare classification performance between a global database comprised of all available sequences and a curated database that only includes sequences of fishes from the California Current Large Marine Ecosystem. We demonstrate that the regional database provides higher assignment accuracy than the comprehensive global database. We also document a tradeoff between accuracy and misclassification across a range of taxonomic cutoff scores, highlighting the importance of parameter selection for taxonomic classification. Furthermore, we compared assignment accuracy with and without the inclusion of additionally generated reference sequences. To this end, we sequenced tissue from 597 species using the MiFish 12S primers, adding 252 species to GenBank's existing 550 California Current Large Marine Ecosystem fish sequences. We then compared species and reads identified from seawater environmental DNA samples using global databases with and without our generated references, and the regional database. The addition of new references allowed for the identification of 16 additional native taxa representing 17.0% of total reads from eDNA samples, including species with vast ecological and economic value. Together these results demonstrate the importance of comprehensive and curated reference databases for effective metabarcoding and the need for locus‐specific validation efforts.
Prevalence and factors associated with low back pain in schoolchildren in Cameroon, sub‐Saharan Africa
Authors: Kemta Lekpa Fernando , Enyama Dominique , Noukeu Njinkui Diomede , Ngongang Chiedjio Arielle , Simeni Njonnou Sylvain Raoul , Ngongang Ouankou Christian , Namme Luma Henry , Choukem Simeon Pierre 
Published: July 2021

AbstractBackgroundData on the prevalence and factors associated with low back pain (LBP) in schoolchildren are scarce in Africa, particularly in sub‐Saharan Africa.ObjectivesTo assess the prevalence and factors associated with LBP in schoolchildren in Cameroon.Patients and methodsWe performed a cross‐sectional study in 10 randomly selected schools (public and private) in Douala, Cameroon. Using a self‐administrated questionnaire, sociodemographic, usual physical activity, and clinical data were collected and all the schoolbags were weighted. Informed consent was obtained from the parents. Statistical significance was established at P < .05. Logistic regression was performed to identify factors associated with LBP.ResultsWe included 1075 schoolchildren (543 boys, 50.5%). The prevalence of LBP was 12.3% (132 children: 81 girls and 51 boys). The mean age was 11 ± 1 years (range, 8‐14 years). Body mass index was normal in 110 schoolchildren (83.4%). Sixteen schoolchildren had already met a physician for LBP. Among the factors evaluated, those associated with LBP were female gender, doing competitive sport, sitting position, and LBP in at least 1 parent. The mean weight of the schoolbags was 4.9 ± 1.9 kg. We had 99 children with LBP and a schoolbag weight ≥10% of their body weight. No association was found between the weight of schoolbag and LBP.ConclusionLBP is common in Cameroonian schoolchildren, where 12.3% suffer from it. The weight of schoolbags was not associated with LBP. However, female gender, competitive sport, sitting position, and parental history of LBP were significantly associated with its occurrence.
A Tale of Two Supervisors: Compliance with Risk Disclosure Regulation in the Banking Sector*
Authors: Bischof Jannis , Daske Holger , Elfers Ferdinand , Hail Luzi 
Published: July 2021

ABSTRACTWe examine how the presence of multiple supervisory agencies affects firm‐level compliance in form and substance with disclosure regulations. This analysis is important because coordination problems among regulators are frequently present in practice but often overlooked in academic research. We exploit that banks are subject to equivalent risk disclosure rules under securities laws (IFRS 7) and banking regulation (Pillar 3 of the Basel II Accord) but that different regulators start enforcing the rules at different points in time. We find that banks substantially increase their formal risk disclosures upon the adoption of Pillar 3 even if they already had to comply with the same requirements under IFRS 7. The effects are stronger if the central bank is responsible for bank supervision and bank regulators are equipped with more supervisory resources, but are less pronounced if the securities market regulator is an independent entity. In turn, banks facing more market pressures are more compliant with the rules. We further find persistent liquidity benefits of the increased risk disclosures but only after Pillar 3 became effective and its compliance was enforced by the banking regulator. Our results suggest that formal and material compliance with risk disclosure regulation are a function of both the resources of the supervisory agency and its incentive alignment with the regulated firms. In our setting, the banking regulator seems more effective in fulfilling this role.
Momentum and Earnings Information in the Korean Stock Market
Authors: Ha Yu Sung , Kang Jangkoo , Kim Sun Yung 
Published: July 2021

AbstractThis study examines whether price momentum profit is related to earnings information in the Korean stock market. Through time‐series and cross‐sectional asset pricing tests, we find that price momentum profits are captured by return on equity; an earnings surprise or revenue surprise partially explains price momentum. The risk‐based factor models cannot explain the existence of earnings‐based momentum, because an earnings‐based zero‐investment portfolio is significantly negatively related to future macroeconomic variables such as gross domestic product and real consumption growth. On the other hand, the underreaction hypothesis is also not sufficient to explain why earnings‐based momentum seems to capture price momentum.