bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Three Hundred project: the gas disruption of infalling objects in cluster environments
Authors: Mostoghiu Robert , Arthur Jake , Pearce Frazer R , Gray Meghan , Knebe Alexander , Cui Weiguang , Welker Charlotte , Cora Sofía A , Murante Giuseppe , Dolag Klaus , Yepes Gustavo 
Published: January 2021

Abstract
We analyse the gas content evolution of infalling haloes in cluster environments from The Three Hundred project, a collection of 324 numerically modelled galaxy clusters. The haloes in our sample were selected within 5R200 of the main cluster halo at $z$ = 0 and have total halo mass M200 ≥ 1011h−1M⊙. We track their main progenitors and study their gas evolution since their crossing into the infall region, which we define as 1–4R200. Studying the radial trends of our populations using both the full phase-space information and a line-of-sight projection, we confirm the Arthur et al. (2019) result and identify a characteristic radius around 1.7R200 in 3D and at R200 in projection at which infalling haloes lose nearly all of the gas prior their infall. Splitting the trends by subhalo status,we show that subhaloes residing in group-mass and low-mass host haloes in the infall region follow similar radial gas-loss trends as their hosts, whereas subhaloes of cluster-mass host haloes are stripped of their gas much further out. Our results show that infalling objects suffer significant gaseous disruption that correlates with time-since-infall, cluster-centric distance, and host mass, and that the gaseous disruption they experience is a combination of subhalo pre-processing and object gas depletion at a radius that behaves like an accretion shock.
New approach to the broad-line-region radius in Mrk142 after considering potential short-term optical transient quasi-periodic oscillations
Authors: Zhang XueGuang 
Published: January 2021

ABSTRACT
Mrk142 is known as the only outlier in R-L space (the correlation between BLR (broad-line region) radii and continuum luminosity) among the low-redshift local reverberation-mapped broad-line active galactic nuclei (BLAGNs) with moderate accretion rates, as its BLR radius is smaller than the expected R-L value. Here, by considering probable optical transient quasi-periodic oscillations (QPOs), a new approach to assessing the BLR radius is presented. Reliable transient QPOs in high-energy emissions from the vicinity of the black hole have been reported in several normal AGNs; however, to date there are few short-term, low-energy optical transient QPOs in normal BLAGNs (i.e. not the QPOs reported in blazars or in AGNs harbouring binary black hole systems). Using the photometric optical light curves, which are well described directly by sinusoidal functions, we report probable short-term optical transient QPOs with periodicities around 14  and 43 d in BLAGN Mrk142, indicating optical QPOs similar to but scaled from those in high-energy bands. By considering the 14-d QPOs related to the reprocessing procedure, a new approach to estimating the BLR radius is possible for Mrk142 through the reverberation mapping technique. The new BLR radius of Mrk142 obeys the R-L relationship well, demonstrating that this relationship is fundamental in local normal BLAGNs without ultra-high accretion rates.
Face-to-face classes during COVID-19: a call for deliberate and well-planned school health protocols in the Philippine context
Authors: Sarmiento Philip Joseph D , Sarmiento Cora Lyn T , Tolentino Rina Lyn B 
Published: January 2021

Abstract
Schooling is one of the most affected aspects of human life due to coronavirus disease-2019 (COVID-19) pandemic. In a recent correspondence published, the authors reminded every country of their responsibility to come up with strategies to reopen schools safely. This paper reiterates the adherence of school health protocols as significant in the delivery of face-to-face classes following national and international guidelines in mitigating the effects of COVID-19 pandemic as a public health crisis.
Assisted assembly of bacteriophage T7 core components for genome translocation across the bacterial envelope
Authors: Pérez-Ruiz Mar , Pulido-Cid Mar , Luque-Ortega Juan Román , Valpuesta José María , Cuervo Ana , Carrascosa José L. 
Published: January 2021

ABSTRACTIn most bacteriophages, the genome transport across bacterial envelopes is carried out by the tail machinery. InPodoviridaeviruses, where the tail is not long enough to traverse the bacterial wall, it has been postulated that viral core proteins are translocated and assembled into a tube within the periplasm. T7 bacteriophage, a member from thePodoviridaefamily, infectsE. coligram-negative bacteria. Despite extensive studies, the precise mechanism by which this virus translocates its genome remains unknown. Using cryo-electron microscopy, we have resolved the structure two different assemblies of the T7 bacteriophage DNA translocation complex, built by core proteins gp15 and gp16. Gp15 alone forms a partially folded hexamer, which is further assembled by interaction with gp16, resulting in a tubular structure with dimensions compatible with traversing the bacterial envelope and a channel that allows DNA passage. The structure of the gp15-gp16 complex also shows the location in gp16 of a canonical transglycosylase motif essential in the bacterial peptidoglycan layer degradation. Altogether these results allow us to propose a model for the assembly of the core translocation complex in the periplasm, which helps in the understanding at the molecular level of the mechanism involved in the T7 viral DNA release in the bacterial cytoplasm.SIGNIFICANCE STATEMENTT7 bacteriophage infectsE. colibacteria. During this process, the DNA transverses the bacterial cell wall, but the precise mechanism used by the virus remains unknown. Previous studies suggested that proteins found inside the viral capsid (core proteins) disassemble and reassemble in the bacterial periplasm to form a DNA translocation channel. In this article we solved by cryo-electron microscopy two different assemblies of the core proteins that reveal the steps followed by them to finally form a tube large enough to traverse the periplasm, as well as the location of the transglycosylase enzyme involved in peptidoglycan degradation. These findings confirm previously postulated hypothesis and make experimentally visible the mechanism of DNA transport trough the bacterial wall.
Topology and hydraulic permeability estimation of explosively created fractures through regular cylindrical pore network models
Authors: Gharehdash Saba , Sainsbury Bre-Anne Louise , Barzegar Milad , Palymskiy Igor B. , Fomin Pavel A. 
Published: January 2021

Purpose
This research study aims to develop regular cylindrical pore network models (RCPNMs) to calculate topology and geometry properties of explosively created fractures along with their resulting hydraulic permeability. The focus of the investigation is to define a method that generates a valid geometric and topologic representation from a computational modelling point of view for explosion-generated fractures in rocks. In particular, extraction of geometries from experimentally validated Eulerian smoothed particle hydrodynamics (ESPH) approach, to avoid restrictions for image-based computational methods.

Design/methodology/approach
Three-dimensional stabilized ESPH solution is required to model explosively created fracture networks, and the accuracy of developed ESPH is qualitatively and quantitatively examined against experimental observations for both peak detonation pressures and crack density estimations. SPH simulation domain is segmented to void and solid spaces using a graphical user interface, and the void space of blasted rocks is represented by a regular lattice of spherical pores connected by cylindrical throats. Results produced by the RCPNMs are compared to three pore network extraction algorithms. Thereby, once the accuracy of RCPNMs is confirmed, the absolute permeability of fracture networks is calculated.

Findings
The results obtained with RCPNMs method were compared with three pore network extraction algorithms and computational fluid dynamics method, achieving a more computational efficiency regarding to CPU cost and a better geometry and topology relationship identification, in all the cases studied. Furthermore, a reliable topology data that does not have image-based pore network limitations, and the effect of topological disorder on the computed absolute permeability is minor. However, further research is necessary to improve the interpretation of real pore systems for explosively created fracture networks.

Practical implications
Although only laboratory cylindrical rock specimens were tested in the computational examples, the developed approaches are applicable for field scale and complex pore network grids with arbitrary shapes.

Originality/value
It is often desirable to develop an integrated computational method for hydraulic conductivity of explosively created fracture networks which segmentation of fracture networks is not restricted to X-ray images, particularly when topologic and geometric modellings are the crucial parts. This research study provides insight to the reliable computational methods and pore network extraction algorithm selection processes, as well as defining a practical framework for generating reliable topological and geometrical data in a Eulerian SPH setting.
Transnational knowledge transfer or indigenous knowledge transfer: which channel has more benefits for China's high-tech enterprises?
Authors: Deng Ping , Lu Hao 
Published: January 2021

PurposeThis paper compares four external technology acquisition channels' (foreign technology transfer, exporting, inter-industry R&D spillover and domestic technology transfer) contributions to Chinese high-tech enterprises' innovation in the moderating role of absorptive capacity (AC).Design/methodology/approachUsing technological catch-up theory and China Statistics Yearbook on High Technology Industry, this research investigates 16 Chinese high-tech industries from 2004 to 2015 via negative binomial regression.FindingsThe results show that indigenous knowledge transfer improves foreign-funded enterprises' (FFEs) innovation, while transnational knowledge transfer is the main channel for state-owned enterprises' (SOEs) technology acquisition. AC strengthens the positive relationship between transnational knowledge transfer and innovation in SOEs and improves FFEs' innovation and exported tacit knowledge absorption.Originality/valueThis study contributes to the literature on external technology acquisition (ETA) and innovation by examining the different mechanism of ETA instead of isolated strategy considering the AC and ownership structure of Chinese high-tech enterprises, which enrich the technological catch-up theory.
A unified perspective on the adoption of online teaching in higher education during the COVID-19 pandemic
Authors: Mittal Amit , Mantri Archana , Tandon Urvashi , Dwivedi Yogesh K. 
Published: January 2021

Purpose
The study aims to develop a theoretical model that highlights the determinants of the adoption of online teaching at the time of the outbreak of COVID-19. This study adopted a time-series analysis to understand the factors leading to the adoption of online teaching.

Design/methodology/approach
Empirical data were gathered from 222 university faculty members by using an online survey. In the first phase, data were collected from those faculty members who had no experience of conducting online classes but were supposed to adopt online teaching as a result of the COVID-19 pandemic and subsequent lockdown. After two weeks, a slightly modified questionnaire was forwarded to the same group of faculty members, who were conducting online classes to know their perception regarding the adoption and conduct of online teaching.

Findings
Both the proposed conceptual frameworks were investigated empirically through confirmatory factor analysis and structural equation modeling. Significant differences were found in the perceptions of faculty members regarding before and after conducting classes through online teaching.

Originality/value
This study contributes to the literature by presenting and validating a theory-driven framework that accentuates the factors influencing online teaching during the outbreak of a pandemic. This research further extends the unified theory of acceptance and use of technology by introducing and validating three new constructs, namely: facilitative leadership, regulatory support and project team capability. Based on the findings, practical insights are provided to universities to facilitate adoption, acceptance and use of online teaching during a health-care emergency leading to campus lockdowns or the imposition of restrictions on the physical movement of people.
Hotel servicescape and customer citizenship behaviors: mediating role of customer engagement and moderating role of gender
Authors: Li Shuhao , Wei Min 
Published: January 2021

Purpose
This study aims to investigate the effect of hotel servicescape on customer citizenship behaviors “CCBs” by addressing customer engagement as a mediator and gender as a moderator.

Design/methodology/approach
A total of 619 questionnaires were collected from hotel customers. Structural equation modeling was applied for data analysis.

Findings
Customer engagement mediates the effects of physical and social servicescapes on CCBs of providing feedback to an organization, making recommendations and helping other customers. Moreover, the indirect effects of physical servicescape on the three types of CCBs through customer engagement are stronger for male than for female customers, whereas no significant gender difference is observed in those effects of social servicescape on these types of CCBs through customer engagement.

Research limitations/implications
This study can help hotels promote the three types of CCBs and customer engagement by creating wonderful physical and social servicescape elements. The major limitation is that this study collected survey data outside the hotel environment.

Originality/value
This study enriches current knowledge on the servicescape-driven responses by exploring how hotel servicescape elements affect the three types of CCBs through customer engagement. Additionally, the different moderating roles of gender in the indirect influences of servicescape elements on these types of CCBs are presented.
Probabilistic uncertain linguistic TODIM method based on the generalized Choquet integral and its application
Authors: Xiuqin Xu , Jialiang Xie , Na Yue , Honghui Wang 
Published: January 2021

PurposeThe purpose of this paper is to develop a probabilistic uncertain linguistic (PUL) TODIM method based on the generalized Choquet integral, with respect to the interdependencies between criteria, for the selection of the best alternate in the context of multiple criteria group decision-making (MCGDM).Design/methodology/approachOwing to decision makers (DMs) do not always show completely rational and may have the preference of bounded rational behavior, this may affect the result of the MCGDM. At the same time, criteria interaction is a focused issue in MCGDM. Hence, a novel TODIM method based on the generalized Choquet integral selects the best alternate using PUL evaluation, where the generalized Choquet integral is used to calculate the weight of criterion. The generalized PUL distance measure between two probabilistic uncertain linguistic elements (PULEs) is calculated and the perceived dominance degree matrices for each alternate relative to other alternates are obtained. Furthermore, the comprehensive perceived dominance degree of each alternate can be calculated to get the ranking.FindingsPotential application of the PUL-TODIM method is demonstrated through an evaluation example with sensitivity and comparative analysis.Originality/valueAs per author's concern, there are no TODIM methods with probabilistic uncertain linguistic sets (PULTSs) to solve MCGDM problems under uncertainty. Compared with the result of existing methods, the final judgment value of alternates using the extended TODIM methodology is highly corroborated, which proves its potential in solving MCGDM problems under qualitative and quantitative environments.
Finding frugal patent candidates: testing a thesaurus-based process model in the field of small household appliances
Authors: Kronemeyer Lena L. , Draeger Raik , Moehrle Martin G. 
Published: January 2021

Purpose
Identifying ideas for frugal innovations could substantially support engineers and managers in their work. Patents may be a promising source of ideas for frugal innovations. The purpose of this paper is to show how patents of this kind can be identified.

Design/methodology/approach
Prior work has developed a generic process model to identify frugal patent candidates. They use semantic analysis and a frugal thesaurus for searching and characterizing frugal patent candidates. The question is, whether and how this process model can be applied to a different industry successfully? The field of small household appliances is selected as a testbed because it is known for including frugal innovations while having a different business model than the industrial field in which the thesaurus was developed.

Findings
Applying the process model leads to a number of 22 strongly frugal patent candidates, which are manually evaluated based on three frugal characteristics. Due to this analysis, a high fraction of the candidates could be identified as frugal patents, which validates the process model. In addition, this paper outlines several options for enhancing the process model, e.g. by separating between a frugal search and a frugal evaluation thesaurus.

Originality/value
The process model to identify frugal patent candidates can be used by engineers and technology managers to find ideas for frugal innovations. This paper not only shows its applicability in the industry of small household appliances but gives the basis for its successful transfer to other industries.
Economic optimization of heat exchanger networks based on geometric parameters using hybrid genetic-particle swarm algorithm technique
Authors: Farzin Amin , Ghazi Mehrangiz , Sotoodeh Amir Farhang , Nikian Mohammad 
Published: January 2021

Purpose
The purpose of this study is to provide a method for designing the shell and tube heat exchangers and examine the total annual cost of heat exchanger networks from the economic view based on the careful design of equipment.

Design/methodology/approach
Accurate evaluation of heat exchanger networks performance depends on detailed models of heat exchangers design. The simulations variables include nine design variables such as flow direction determination of each of the two fluids, number of tubes, number of tube passes, length of tubes, the arrangement of tubes, size and percentage of baffle cut, tube diameter and tube pitch. The optimal designing of the heat exchangers is based on geometrical and hydraulic modeling and using a hybrid genetic particle swarm optimization algorithm (PSO-GA) technique. In this paper, optimization and minimization of the total annual cost of heat exchanger networks are considered as the objective function.

Findings
In this study, a fast and reliable method is used to simulate, optimize design parameters and evaluate heat transfer enhancement. PSO-GA algorithms have been used to minimize the total annual cost, which includes investment costs of heat exchangers and pumps, operating costs (pumping) and energy costs for utilities. Three case studies of four, six and nine streams are selected to demonstrate the accuracy of the method. Reductions of 0.55%, 23.5% and 14.78% are obtained in total annual cost for the selected streams, respectively.

Originality/value
In the present study, a reliable method is used to simulate and optimize design parameters and the economic optimization of the heat exchanger networks. Taking into account the importance of shell and tube heat exchangers in industrial applications and the complexity in their geometry, the PSO-GA methodology is adopted to obtain an optimal geometric configuration. The total annual cost is chosen as the objective function. Applying this technique to case studies demonstrates its ability to accurately design heat exchangers to optimize the objective function of the heat exchanger networks by giving the detail of design.
Barriers to blockchain adoption in health-care industry: an Indian perspective
Authors: Sharma Manu , Joshi Sudhanshu 
Published: January 2021

Purpose
This paper aims to identify barriers toward the adoption of blockchain (BC) technology in Indian health-care industry and also examines the significant issues of BC applications in health-care industry.

Design/methodology/approach
The barriers of the study are identified by two phases including the review of literature and semistructured interviews with hospital staff and administration operating in India. The experts (N = 15) are being taken from top-level management, IT experts and patients from the hospitals. The study implemented integrated total interpretative structural modeling-FUZZY-Cross-impact matrix multiplication applied to classification (TISM-FUZZY-MICMAC) methods for identifying the interrelationship among the barriers.

Findings
A total of 15 barriers have been determined in the Indian health-care industry through discussion with the selected experts. TISM is applied to develop multilevel structure for BC barriers. Further, FUZZY-MICMAC has been used to compute driving and dependent barriers. The findings suggest that low awareness related to legal issues and low support from high level of management have maximum driving power.

Research limitations/implications
The present study applies multicriterion approach to identify the limited barriers in BC adoption in health care. Future studies may develop the relationship and mark down the steps for implementation of BC in health-care setting of a developing economy. Empirical study can be conducted to verify the results along with selected case studies.

Practical implications
The present study identifies the BC adoption barriers in health-care industry. The study examines the pertinent issues in context to major support required, bottlenecks in adoption, key benefits of adoption planning and activities. The technology adoption practices are expected to provide applications such as distributed, secured medical and clinical data and patient centric systems that will enhance the efficiency of the health-care industry.

Originality/value
The study is among few primary studies that identify and analyze the BC adoption in health-care industry.