bluuebunny/crossref_metadata_2025_split huggingface dataset:
Landlords with no lands: a systematic literature review on hybrid multi-sided platforms and platform thinking
Authors: Trabucchi Daniel , Buganza Tommaso 
Published: March 2021

PurposeThis article is based on a systematic and comprehensive review of the literature on two-sided platforms, the business structure based on the concept of matchmaking groups of customers (e.g. Uber or Airbnb). The research aims to identify gaps in the existing literature while providing a structured summary of the existing knowledge in the field. Finally, we propose a conceptual framework enabling platform thinking, the ability to see hybrid multi-sided platforms as a useful resource-orchestration structure to unveil innovation opportunities.Design/methodology/approachThis study adopts a bibliometric approach, combing co-citation and text mining analyses of 196 papers, also implementing a longitudinal analysis that highlights the evolution of the field since its inception till today.FindingsThe novel aspect of the paper consists in taking a purely managerial stance of a very peculiar kind of platform, merging existing knowledge in comprehensive frameworks while providing potential avenues for research.Research limitations/implicationsFrom an academic perspective, this research highlights the double nature of two-sided platforms: as an operational choice or as a way to exploit (digital) assets and reach the economic sustainability. A research agenda is proposed, based on three pillars: a side-based standpoint, a business model perspective and an evolutionary stance to see how these businesses may evolve.Practical implicationsThe research identifies different literature streams that may help practitioners in identifying how two-sided platforms may help them in fostering innovation.Originality/valueThe identification of two-sided platforms as a different way to create value (transaction platforms) or to capture value (non-transaction platform), enhancing the debate on this innovative business model. A research agenda to bring the field forward is proposed.
Modeling multi-state system reliability analysis in a power station under fatal and nonfatal shocks: a simulation approach
Authors: Pourhassan Mohammad Reza , Raissi Sadigh , Apornak Arash 
Published: March 2021

PurposeIn some environments, the failure rate of a system depends not only on time but also on the system condition, such as vibrational level, efficiency and the number of random shocks, each of which causes failure. In this situation, systems can keep working, though they fail gradually. So, the purpose of this paper is modeling multi-state system reliability analysis in capacitor bank under fatal and nonfatal shocks by a simulation approach.Design/methodology/approachIn some situations, there may be several levels of failure where the system performance diminishes gradually. However, if the level of failure is beyond a certain threshold, the system may stop working. Transition from one faulty stage to the next can lead the system to more rapid degradation. Thus, in failure analysis, the authors need to consider the transition rate from these stages in order to model the failure process.FindingsThis study aims to perform multi-state system reliability analysis in energy storage facilities of SAIPA Corporation. This is performed to extract a predictive model for failure behavior as well as to analyze the effect of shocks on deterioration. The results indicate that the reliability of the system improved by 6%.Originality/valueThe results of this study can provide more confidence for critical system designers who are engaged on the proper system performance beyond economic design.
Intellectual capital and bank branches' efficiency: an integrated study
Authors: Ting Irene Wei Kiong , Chen Fu-Chiang , Kweh Qian Long , Sui Hai Juan , Le Hanh Thi My 
Published: March 2021

PurposeThis study aims to investigate the association between intellectual capital (IC) and bank efficiency of Taiwanese bank branches.Design/methodology/approachThis study manually collects sample data from 107 non-public financial reports of the bank branches of Taiwan Business Bank Company Limited. As this study concerns bank branches, this study uses questionnaires related to IC to measure the implementation of IC at branch level. This study employs data envelopment analysis (DEA) models (BCC, EBM and BootBCC) to identify bank branches' efficiency. This study uses partial least square-based structural equation modeling analysis to assess the impact of IC and bank efficiency.FindingsResult reveals that relational capital (RC) significantly and negatively impacts bank efficiency. Findings also imply that human capital (HC) and structural capital (SC) do not contribute to bank efficiency in Taiwan.Practical implicationsSpending effort in building relationships with customers diverts banks' resources. More inputs that are used may not be converted to outputs immediately. Bank branches should focus on enhancing their service quality to attract customers to use the facilities provided by branches.Originality/valueTo the best of the authors' knowledge, this empirical study is the first to examine the association between IC and bank branches' efficiency in Taiwan by integrating primary and secondary data. For IC components, this study conducts a survey by designing the questionnaires related to IC to assess the implementation of IC at bank branches in Taiwan. In terms of efficiency, this study uses bank financial data and DEA models to identify bank branches' efficiency.
Dynamic managerial capabilities, organisational capacity for change and organisational performance: the moderating effect of attitude towards change in a public service organisation
Authors: Widianto Sunu , Lestari Yetty Dwi , Adna Beta Embriyono , Sukoco Badri Munir , Nasih Mohammad 
Published: March 2021

PurposeThe aim of this study is to explore dynamic managerial capabilities (DMCs) and their effect on public organisational performance. While the previous research has focused on how leadership style impacts on organisational performance, the authors have investigated how the dynamic managerial capabilities of middle managers and their organisational capacity for change as well as their attitude towards the change are linked to organisational performance.Design/methodology/approachThe dataset was gathered during the field research carried out in a large public Indonesian government institution. In total, 313 managers and their direct followers participated in this study. The authors have employed structural equation modelling to test the hypotheses.FindingsThe results of this study demonstrate the role of the dynamic capabilities of the middle managers associated with organisational performance. The results show that dynamic managerial capabilities and organisational performance are mediated by the organisational capacity for change.Practical implicationsMiddle managers should equip and develop their capabilities in order to embrace change in the organisation through the communication between the different staff levels, uniting the vision and mission with the organisational members. Further, the organisation should empower the role of the middle managers by increasing their authority and participation in the policy-making that is part of the change process. In addition, the workplace could implement interventions to optimise the dynamic managerial capabilities held by the middle manager and employees through assessments and mentoring. Finally, particular training programmes could be implemented to boost the employees' skills and flexibility, thereby keeping them agile in the context of the changes in the work environment.Originality/valueThe role of the dynamic managerial capabilities of the middle manager is a prominent factor when facilitating a high level of organisational performance in a public organisation. However, the role of dynamic managerial capabilities does not have a direct effect on organisational performance if the organisation does not have the capacity to change, particularly in the Indonesian context.
Combinations of Drinking Occasion Characteristics Associated with Units of Alcohol Consumed among British Adults: An Event‐Level Decision Tree Modeling Study
Authors: Stevely Abigail K. , Holmes John , Meier Petra S. 
Published: March 2021

BackgroundAlcohol consumption is influenced by the characteristics of drinking occasions, for example, location, timing, or the composition of the drinking group. However, the relative importance of occasion characteristics is not yet well understood. This study aims to identify which characteristics, and combinations of characteristics, are associated with units consumed within drinking occasions. It also tests whether accounting for occasion characteristics improves the prediction of consumption compared to using demographic information only.MethodsThe data come from a cross‐sectional, nationally representative, online market research survey. Our sample includes 18,409 British drinkers aged 18 + who recorded the characteristics of 46,072 drinking occasions using 7‐day retrospective drinking diaries in 2018. We used decision tree modeling and nested linear regression to predict units consumed in occasions using information on drinking location/venue, occasion timing, company, occasion type (e.g., a quiet night in), occasion motivation, drink type and packaging, food eaten and entertainment/ other activities during the occasion. We estimated models separately for 6 age‐sex groups and controlled for usual drinking frequency, and social grade in nested linear regression models. Open Science Framework preregistration: https://osf.io/42epd.ResultsOur 6 final models accounted for between 55% and 71% of the variance in drinking occasion alcohol consumption. Beyond demographic characteristics (1 to 9%) and occasion duration (24 to 60%), further occasion characteristics and combinations of characteristics accounted for 31 to 70% of the total explained variance. The characteristics most strongly associated with heavy alcohol consumption were long occasion duration, drinking spirits as doubles, and drinking wine. Spirits were also consumed in light occasions, but as singles. This suggests that the serving size is an important differentiator of light and heavy occasions.ConclusionsCombinations of occasion duration and drink type are strongly predictive of alcohol consumption in adults’ drinking occasions. Accounting for characteristics of drinking occasions, both individually and in combination, substantially improves the prediction of alcohol consumption.
First description of a tent used by Platyrrhinus recifinus
Authors: Breviglieri Crasso Paulo Bosco 
Published: March 2021

AbstractSome species of Neotropical bats of the family Phyllostomidae (leaf‐nosed bats) modify the leaves of plants to construct ‘tents’ for daytime roosts. However, little is known about which bat species are associated with this behaviour. Here, I present the first description of the use of two tents by Recife Broad‐nosed Bat, Platyrrhinus recifinus, constructed in leaves of Miconia brunnea in a degraded Brazilian Atlantic forest fragment. Both structures had the architectural style of tents‐boat/apical. The shape of the leaves may mediate the architecture of these tents. In addition, they observed that only one male attended the two tents during the same night. This description provides new insights into the biology and behaviour of Platyrrhinus species. I further highlight several unknown for most tent‐making bats that merit future research.
Cardiac glycosides cause cytotoxicity in human macrophages and ameliorate white adipose tissue homeostasis
Authors: Olona Antoni , Hateley Charlotte , Guerrero Ana , Ko Jeong‐Hun , Johnson Michael R. , Anand Paras K. , Thomas David , Gil Jesus , Behmoaras Jacques 
Published: March 2021

Background and PurposeCardiac glycosides inhibit Na+/K+‐ATPase and are used to treat heart failure and arrhythmias. They can induce inflammasome activation and pyroptosis in macrophages, suggesting cytotoxicity, which remains to be elucidated in human tissues.Experimental ApproachTo determine the cell‐type specificity of this cytotoxicity, we used human monocyte‐derived macrophages and non‐adherent peripheral blood cells from healthy donors, plus omental white adipose tissue, stromal vascular fraction‐derived pre‐adipocytes and adipocytes from obese patients undergoing bariatric surgery. All these cells/tissues were treated with nanomolar concentrations of ouabain (50, 100, 500 nM) to investigate the level of cytotoxicity and the mechanisms leading to cell death. In white adipose tissue, we investigated ouabain‐mediated cytotoxicity by measuring insulin sensitivity, adipose tissue function and extracellular matrix deposition ex vivo.Key ResultsOuabain induced cell death through pyroptosis and apoptosis, and was more effective in monocyte‐derived macrophages compared to non‐adherent peripheral blood mononuclear cell populations. This cytotoxicity is dependent on K+ flux, as ouabain causes intracellular depletion of K+ and accumulation of Na+ and Ca2+. Consistently, the cell death caused by these ion imbalances can be rescued by addition of potassium chloride to human monocyte‐derived macrophages. Remarkably, when white adipose tissue explants from obese patients are cultured with nanomolar concentrations of ouabain, this causes depletion of macrophages, down‐regulation of type VI collagen levels and amelioration of insulin sensitivity ex vivo.Conclusion and ImplicationsThe use of nanomolar concentration of cardiac glycosides could be an attractive therapeutic treatment for metabolic syndrome, characterized by pathogenic infiltration and activation of macrophages.LINKED ARTICLESThis article is part of a themed issue on Inflammation, Repair and Ageing. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v179.9/issuetoc
Fluid Reconstruction and Editing from a Monocular Video based on the SPH Model with External Force Guidance
Authors: Nie Xiaoying , Hu Yong , Su Zhiyuan , Shen Xukun 
Published: March 2021

AbstractWe specifically present a general method for monocular fluid videos to reconstruct and edit 3D fluid volume. Although researchers have developed many monocular video‐based methods, the reconstructed results are merely one layer of geometry surface, lack of accurate physical attributes of fluids, and challenging to edit fluid. We obtain a high‐quality 3D fluid volume by extending the smoothed particle hydrodynamics (SPH) model with external force guidance. For reconstructing fluid, we design target particles that are recovered from the shape from shading (SFS) method and initialize fluid particles that are spatially consistent with target particles. For editing fluid, we translate the deformation of target particles into the 3D fluid volume by merging user‐specified features of interest. Separating the low‐ and high‐frequency height field allows us to efficiently solve the motion equations for a liquid while retaining enough details to obtain realistic‐looking behaviours. Our experimental results compare favourably to the state‐of‐the‐art in terms of global fluid volume motion features and fluid surface details and demonstrate our model can achieve desirable and pleasing effects.
Effect of final irrigation protocols on the fracture resistance of roots with varying dentine thickness
Authors: Ulusoy Özgür İlke , Genç Şen Özgür , Zeyrek Salev , Kaya Melih , Paltun Yelda Nayır 
Published: March 2021

AbstractThis study evaluated the effects of 9% etidronic acid (HEBP) and 17% ethylenediaminetetraacetic acid (EDTA) used either with conventional syringe irrigation (CSI) or passive ultrasonic irrigation (PUI) on the fracture resistance of roots with different dentine thickness. The root canals of 120 extracted teeth were widened, leaving dentinal walls with different thicknesses of either 0.75 mm, 1.50 mm, or 2.25 mm with 40 teeth in each group. Within each of these groups, four subgroups (n = 10) were formed according to the final irrigation regimens applied: 2.5% NaOCl‐17% EDTA with CSI; 2.5% NaOCl‐17% EDTA with PUI; 2.5% NaOCl + 9% HEBP with CSI; 2.5% NaOCl + 9% HEBP with PUI. The irrigated root canals were obturated with AH Plus sealer and gutta‐percha cones. A compressive vertical loading was applied to the samples and the force at fracture was recorded. Data were statistically analysed using a multiple linear regression analysis. The most influencing factor for the fracture strength of roots was the remaining dentine thickness, followed by the irrigation method, and then the irrigation solution. The samples irrigated using PUI were statistically significantly more resistant to fracture than those using CSI (mean difference = 116.3 N; 95% CI = [53.9, 178.6] N). The application of HEBP was associated with higher resistance to fracture than the application of EDTA (mean difference = 71.0 N; 95% CI = [8.6, 133.3] N).
Clinical significance of ragA, ragB, and PG0982 genes in Porphyromonas gingivalis isolates from periodontitis patients
Authors: Bunte Kübra , Kuhn Christina , Walther Carolin , Peters Ulrike , Aarabi Ghazal , Smeets Ralf , Beikler Thomas 
Published: March 2021

AbstractConsistent detection of ragA, ragB, and PG0982 in the genome of Porphyromonas gingivalis (P. gingivalis) isolates from periodontitis patients suggests that genotypes containing these genes may influence virulence and P. gingivalis‐associated periodontitis progression. This study evaluated the prevalence of these genes in P. gingivalis isolates from periodontitis patients (n = 28) and in isolates from periodontally healthy P. gingivalis carriers (n = 34). The association of these genes with progression of periodontitis, in vitro cell invasiveness, and bacterial survival following periodontal therapy was also assessed. Periodontal charting and microbiological sampling were done at baseline, and at 6, 12, and 24 months following subgingival debridement of the periodontitis patients. Healthy controls were assessed at baseline for comparison. P. gingivalis isolates were analysed by ragA, ragB, and PG0982 specific polymerase chain reaction (PCR) and Sanger sequencing. Primary human gingival fibroblasts were used for invasion experiments. Results showed that 25% of the tested isolates from the periodontitis group had ragB detected, whereas this gene was undetected in isolates from healthy participants. However, none of the selected genes was associated with an increased cell invasiveness in vitro, with bacterial survival, or with significant clinical periodontal parameter changes. Identification of genes that influence P.gingivalis virulence and therapeutic outcome may have a diagnostic or prognostic value.
The real effects of institutional spatial concentration
Authors: Huang Xiaoran , Qiao Zheng , Zhang Lei 
Published: March 2021

AbstractWe present evidence that spatially concentrated institutional investors enhance corporate innovation. These investors can coordinate more efficiently, leading to lower turnover of the holding firms’ stocks and more diversified portfolios, which enables the holding firms to increases corporate risk‐taking and focus more on long‐term investments. Consistent with this argument, we find that firms with spatially concentrated investors take higher risk, invest more heavily in innovative projects, generate more patents, and have more patent citations. Our results are robust to using instrumental variables and the introduction of a new airline route as an exogenous shock to spatial concentration among institutional investors.
Helicobacter pylori induced reactive oxygen Species: A new and developing platform for detection
Authors: Jain Utkarsh , Saxena Kirti , Chauhan Nidhi 
Published: March 2021

AbstractBackgroundGastric cancer is the third leading cause of cancer‐related deaths worldwide. Approximately 70% of cases are caused by a microaerophilic gram‐negative bacteria, Helicobacter pylori (H. pylori), which potentially infect almost 50% of world's population. H. pylori is mainly responsible for persistent oxidative stress in stomach and induction of chronic immune responses which ultimately result into DNA damage that eventually can lead to gastric cancer. Oxidative stress is the result of excessive release of ROS/RNS by activated neutrophils whereas bacteria itself also produce ROS in host cells. Therefore, ROS detection is an important factor for development of new strategies related to identification of H. pylori infection.MethodsThe review summarizes the various available techniques for ROS detection with their advantages, disadvantages, and limitations. All of the information included in this review have been retrieved from published studies on ROS generation and its detection methods.ResultsPrecisely, 71 articles have been incorporated and evaluated for this review. The studied articles were divided into two major categories including articles on H. pylori‐related pathogenesis and various ROS detection methods for example probe‐based methods, immunoassays, gene expression profiling, and other techniques. The major part of probe activity is based on fluorescence, chemiluminescence, or bioluminescence and detected by complementary techniques such as LC‐MS, HPLC, EPR, and redox blotting.ConclusionThe review describes the methods for ROS detection but due to some limitations in conventional methods, there is a need of cost‐effective, early and fast detection methods like biosensors to diagnose the infection at its initial stage.
Plasma etching behavior of yttrium‐aluminum oxide composite ceramics
Authors: Tan Yicheng , Chen Peng , Zhu Zuoxiang , Wu Shanghua , Tian Zhuo 
Published: March 2021

AbstractIn order to get a general regularity of erosion performance in alumina‐strengthened yttria ceramics, High‐quality yttrium‐aluminum oxide composite ceramics with different alumina/yttria molar ratios were fabricated, and the as‐prepared specimens were named Y2O3, YAG, YAGA, and Al2O3. The erosion behavior of the ceramics was examined and explained. The etching morphologies of the ceramics revealed that the multi‐phase composite ceramic (YAGA) was etched selectively, whereas the single‐phase ceramics were corroded homogeneously. The weight loss rate of the ceramics after etching was not proportional to the Al2O3 content, and it conformed to the percolation theory. As the alumina content in yttrium‐aluminum oxide composite ceramics was below the minimum value of percolation transition in two‐phase system the erosion resistance of the strengthened composite ceramics demonstrated excellent as well yttria ceramics.