bluuebunny/crossref_metadata_2025_split huggingface dataset:
Andy Gump Fracture of the Mandible in a Pediatric Patient
Authors: Mulinari-Santos Gabriel , Lima Valthierre Nunes , Palacio-Muñoz Xiomara Mónica Johanna , Oliva André Hergesel de , Momesso Gustavo Antonio Correa , Polo Tárik Ocon Braga , Souza Francisley Ávila , Garcia-Júnior Idelmo Rangel , Faverani Leonardo Perez 
Published: August 2017

Abstract
The mandibular fractures in pediatric patients are rare, and they can need a fast and safe treatment. We present a case of a pediatric patient with “Andy Gump” fracture, resulting in a retrognathic mandible, distress to breathe, and functional discomfort to the patient caused by a cycling accident. The treatment was successful with the fast release of airway path and use of titanium plates to fix the fracture.
Solitary Frontal Sinus Fractures Compared to Multiple Facial Fractures, Energy Impact Dependency
Authors: Weitman Efi , Shilo Dekel , Emodi Omri , Rachmiel Adi 
Published: August 2017

AbstractFrontal sinus fractures account for 2% to 15% of maxillofacial injuries. Up to 66% to 87% of the patients with frontal sinus fractures experience associated facial fractures. The majority of classifications used today categorize frontal sinus fractures depending on the integrity of the anterior table, posterior table, and the nasofrontal outflow. A retrospective study was performed, which included 24 patients diagnosed with frontal sinus fractures. Treatment in all patients consisted of open reduction and bone fixation. We analyzed population variables, injury etiology, fracture site, associated craniofacial injuries, surgical technique employed, handling of the nasofrontal duct, and postoperative complications. The most frequent etiology was falling accidents. Fifty-eight percent of the fractures involved both the anterior and posterior tables. Sixty-six percent experienced associated facial fractures. Fifty percent of frontal sinus fractures were treated by open reduction internal fixation as the only treatment, 33.3% underwent sinus obliteration, and 16.6% were treated with cranialization. Frontal sinus fractures resulting from high-energy impact exhibited additional facial bone fractures in 100% of the cases, whereas fractures following low-energy impact showed involvement of additional facial fractures in only 27% of the cases. In this report, we suggest a modification to the anteroposterior classification of frontal sinus fractures. In addition to the involvement of the anterior and posterior walls and the degree of dislocation, high and low energy impact can direct us to the involvement of additional facial fractures and influence the surgical strategy.
Temporal Deformity Objectively Measured Before and After Surgery for Metopic Synostosis: Retrusion Rather than Hollowing
Authors: Bhatti-Söfteland Madiha , Maltese Giovanni , Tarnow Peter , Hagmarker Linn , Wikberg Emma , Bernhardt Peter , Kölby Lars 
Published: September 2017

Abstract
The temporal contour deformity typical of metopic synostosis is often referred to as temporal hollowing, but has not been quantitatively defined. This deformity is present before surgery and remains to a varying extent at long-term follow-up. The present study aimed to objectively evaluate the degree of this contour deformity in metopic synostosis before and after surgical correction.
All children surgically treated for metopic synostosis at Sahlgrenska University Hospital between 2002 and 2014 (n = 120) with appropriate computed tomography scans (n = 160) performed preoperatively and/or at follow-up at 3 years of age were included. Depending on age, 1 of 2 surgical techniques was used. Children presenting before the age of 6 months were treated with frontal remodeling in combination with a spring (S group), whereas children older than 6 months were treated with a bone transplant (BT group). The bony temporal deformity was measured with a semiautomatic MATLAB program and patients were compared to sex- and age-matched controls.
The deformity was significantly reduced in both groups (P < 0.001). In the S group, it was reduced from a mean ± standard deviation of 3.6 ± 1.9% to 1.0 ± 1.2% and in the BT group, it was reduced from 3.3% ± 1.4% to 1.1% ± 0.8%.
The contour deformity in metopic synostosis is present both before and after surgery and should therefore be termed temporal retrusion (TR). This assessment method enables objective comparison of TR before and after surgical correction and is a potential tool to evaluate TR in metopic synostosis.
The Sync/deSync model: How a synchronized hippocampus and a de-synchronized neocortex code memories
Authors: Parish George , Hanslmayr Simon , Bowman Howard 
Published: September 2017

AbstractNeural oscillations are important for memory formation in the brain. The de-synchronisation of Alpha (10Hz) oscillations in the neo-cortex has been shown to predict successful memory encoding and retrieval. However, when engaging in learning, it has been found that the hippocampus synchronises in Theta (4Hz) oscillations, and that learning is dependent on the phase of Theta. This inconsistency as to whether synchronisation is ‘good’ for memory formation leads to confusion over which oscillations we should expect to see and where during learning paradigm experiments. This paper seeks to respond to this inconsistency by presenting a neural network model of how a well-functioning learning system could exhibit both of these phenomena, i.e. desynchronization of alpha and synchronisation of theta during successful memory encoding.We present a spiking neural network (the Sync/deSync model) of the neo-cortical and hippocampal system. The simulated hippocampus learns through an adapted spike-time dependent plasticity rule, in which weight change is modulated by the phase of an extrinsically generated theta oscillation. Additionally, a global passive weight decay is incorporated, which is also modulated by theta phase. In this way, the Sync/deSync model exhibits theta phase-dependent long-term potentiation and long-term depression. We simulated a learning paradigm experiment and compared the oscillatory dynamics of our model with those observed in single-cell and scalp-EEG studies of the medial temporal lobe. Our Sync/deSync model suggests that both the de-synchronisation of neo-cortical Alpha and the synchronisation of hippocampal Theta are necessary for successful memory encoding and retrieval.Significance statementA fundamental question is the role of rhythmic activation of neurons, i.e. how their firing oscillates between high and low rates. A particularly important question is how oscillatory dynamics between the neo-cortex and hippocampus contribute to memory formation. We present a spiking neural-network model of such memory formation, with the central ideas that 1) in neo-cortex, neurons need to break-out of an alpha oscillation in order to represent a stimulus (i.e. alpha desynchronises), while 2) in hippocampus, the firing of neurons at theta facilitates formation of memories (i.e. theta synchronises). Accordingly, successful memory formation is marked by reduced neo-cortical alpha and increased hippocampal theta. This pattern has been observed experimentally and gives our model its name – the Synch/deSynch model.
Digital consumers as cultural curators: the irony of Vaporwave
Authors: Schembri Sharon , Tichbon Jac 
Published: August 2017

PurposeThe purpose of this paper is to address the question of cultural production, consumption and intermediation in the context of digital music.Design/methodology/approachThis research adopts an interpretivist, ethnoconsumerist epistemology along with a netnographic research design combined with hermeneutic analysis. Interpreting both the text view and field view of an ethnoconsumerist approach, the netnographic research design includes participant observation across multiple social media platforms as well as virtual interviews and analysis of media material. The context of application is a digital music subculture known as Vaporwave. Vaporwave participants deliberately distort fundamental aspects of modern and postmodern culture in a digital, musical, artistic and storied manner.FindingsHermeneutic analysis has identified a critical and nostalgic narrative of consumerism and hyper-reality, evident as symbolic parallels, intertextual relationships, existential themes and cultural codes. As a techno savvy community embracing lo-fi production, self-releasing promotion and anonymity from within a complexity of aliases and myriad collaborations, the vaporous existentialism of Vaporwave participants skirts copyright liability in the process. Accordingly, Vaporwave is documented as blurring reality and fantasy, material and symbolic, production and consumption. Essentially, Vaporwave participants are shown to be digital natives turned digital rebels and heretical consumers, better described as cultural curators.Research limitations/implicationsThis research demonstrates a more complex notion of cultural production, consumption and intermediation, argued to be more accurately described as cultural curation.Practical implicationsAs digital heretics, Vaporwave participants challenge traditional notions of modernity, such as copyright law, and postmodern notions such as working consumers and consuming producers.Social implicationsVaporwave participants present a case of digital natives turned digital rebels and consumer heretics, who are actively curating culture.Originality/valueThis interpretive ethnoconusmerist study combining netnography and hermeneutic analysis of an online underground music subculture known as Vaporwave shows digital music artists as cultural curators.
Symmetrical valve controlled asymmetrical cylinder based on wavelet neural network
Authors: Qi Haitao , Liu Zilong , Lang Yan 
Published: August 2017

Purpose
The symmetrical valve is usually used in the hydraulic servo control system to control the asymmetrical cylinder, but this system’s structure involves asymmetry, and so its dynamic characteristics are asymmetrical, which causes issues in the control system of symmetric response. The purpose of this paper is to achieve the aim of symmetric control.

Design/methodology/approach
In this paper, the authors proposed a method that combined wavelet neural network (WNN) and model reference adaptive control. The reference model determined the dynamic response that the system was expected to achieve, and the WNN adaptive control made the system follow the reference model to achieve the purpose of symmetric control.

Findings
The experimental results show that the method can achieve a more accurate symmetric control and position control compared with the solutions via the classical PID control.

Originality/value
The proposed combination of the WNN and the reference model can effectively compensate for the asymmetry of dynamic response of the asymmetric cylinder in forward and return directions, which can be extended to deal with other classes of applications.
The future of Big Data in facilities management: opportunities and challenges
Authors: Ahmed Vian , Tezel Algan , Aziz Zeeshan , Sibley Magda 
Published: August 2017

Purpose
This paper aims to explore the current condition of the Big Data concept with its related barriers, drivers, opportunities and perceptions in the architecture, engineering and construction (AEC) industry with an emphasis on facilities management (FM).

Design/methodology/approach
Following a comprehensive literature review, the Big Data concept was investigated through two scoping workshops with industry experts and academics.

Findings
The value in data analytics and Big Data is perceived by the industry, yet the industry needs guidance and leadership. Also, the industry recognises the imbalance between data capturing and data analytics. Large IT vendors’ developing AEC industry-focused analytics solutions and better interoperability among different vendors are needed. The general concerns for Big Data analytics mostly apply to the AEC industry as well. Additionally, however, the industry suffers from a structural fragmentation for data integration with many small-sized companies operating in its supply chains. This paper also identifies a number of drivers, challenges and way-forwards that calls for future actions for Big Data in FM in the AEC industry.

Originality/value
The nature of data in the business world has dramatically changed over the past 20 years. This phenomenon is often broadly dubbed as “Big Data” with its distinctive characteristics, opportunities and challenges. Some industries have already started to effectively exploit “Big Data” in their business operations. However, despite many perceived benefits, the AEC industry has been slow in discussing and adopting the Big Data concept. Empirical research efforts investigating Big Data for the AEC industry are also scarce. This paper aims at outlining the benefits, challenges and future directions (what to do) for Big Data in the AEC industry with an FM focus.
Algebraic solutions of flow and heat for some nanofluids over deformable and permeable surfaces
Authors: Turkyilmazoglu Mustafa 
Published: August 2017

Purpose
This paper aims to working out exact solutions for the boundary layer flow of some nanofluids over porous stretching/shrinking surfaces with different configurations. To serve to this aim, five types of nanoparticles together with the water as base fluid are under consideration, namely, Ag, Cu, CuO, Al2O3 and TiO2.

Design/methodology/approach
The physical flow is affected by the presence of velocity slip as well as temperature jump conditions.

Findings
The knowledge on the influences of nanoparticle volume fraction on the practically significant parameters, such as the skin friction and the rate of heat transfer, for the above considered nanofluids, is easy to gain from the extracted explicit formulas.

Originality/value
Particularly, formulas clearly point that the heat transfer rate is not only dependent on the thermal conductivity of the material but it also highly relies on the heat capacitance as well as the density of the nanofluid under consideration.
Cultural transposition of Chinese lesson study to Italy
Authors: Bartolini Bussi Maria Giuseppina , Bertolini Chiara , Ramploud Alessandro , Sun Xuhua 
Published: August 2017

Purpose
The purpose of this paper is to explore the early implementation of a model of mathematics teacher development in Italian schools, inspired by Chinese lesson study (CLS), focusing on similarities and differences.

Design/methodology/approach
A research lesson study on fractions in the fourth grade was conducted. The approach was designed based on the theory of semiotic mediation (TSM) enriched by means of quaternary analysis and the variation pedagogy of CLS. In this study, qualitative methods were employed involving the collection of data including lesson plans, observations and post-lesson analyses.

Findings
The purpose of this study is to determine what works and what does not work in the Italian context. Answers to the following research questions are provided: How did LS incorporate quaternary analysis and variation pedagogy in the TSM? How and why were changes introduced in the structure of the lesson plan with respect to the CLS? How did members of the Italian Mathematics Teaching Research Group increase their knowledge of teaching methods and content?

Research limitations/implications
The issues to be considered in further studies include the possible conflicts emerging between the cultures of teaching in China and Italy and the way to overcome them.

Practical implications
The main ideas of CLS are consistent with the general indications of the Italian Ministry of Education for the three-year program (2016-2019) of mandatory teacher development.

Originality/value
Reporting the findings of an Italian LS is aimed at exploring the differences and similarities among the different forms of LS, under the influence of cultural and institutional constraints.
From Shanghai to Tennessee
Authors: Cravens Xiu , Drake Timothy 
Published: August 2017

PurposeThe purpose of this paper is to document a three-year international project aimed to improve the capacity of participating schools and districts in implementing and scaling Teacher Peer Excellence Groups (TPEGs). The TPEG model involves teams of teachers organized by subject matter or grade levels, deeply engaged in communities of practice for instructional improvement. It facilitates the professionalization of teaching through the de-privatization of teacher practice, collaborative planning, giving and receiving actionable feedback, and holding one another accountable for implementing improvement measures.Design/methodology/approachThe project is a collaborative partnership between US and Chinese universities and school districts in Tennessee and Shanghai. Mixed-method approaches were used to track the development and implementation of the TPEG model in 27 pilot schools in six Tennessee districts from 2013 to 2016. Data were collected through school site visits, lesson-planning documents, classroom observations, focus groups, interviews, and teacher and principal surveys.FindingsThis paper compiles the key findings from multiple research studies and program reports about the TPEG project. Findings provide encouraging evidence that, given sufficient support and guidance, teachers can construct productive learning communities. The results show consistent positive and statistically significant result across all three key signposts for effective communities of practice – increases in instructional collaboration, comfort with deprivatized teaching practice, and engagement in deprivatized teaching practice. These findings hold after controlling for key enabling conditions and school characteristics. Qualitative analyses provide a rich and nuanced picture of how TPEGs were doing after the implementation grants. Participating schools reported a full range of engagements in TPEGs, and emphasized the role of school leadership in facilitating and supporting teachers to lead and participate in TPEGs.Originality/valueThe TPEG project provides a valuable case study to address the benefits, concerns, and potential risks associated with cross-cultural learning of effective instructional practices. Findings from the three-year process highlight the key steps of cultivating the necessary culture and expertise to support, implement, and sustain effective TPEGs school-wide and district-wide. It also underscores the necessity of developing and customizing tools and resource kit for supporting this work such as observation protocols, feedback guides, and examples of timetables to conduct TPEG activities.
Delamination analysis of a layered elastic-plastic beam
Authors: Rizov Victor 
Published: August 2017

Purpose
The purpose of this paper is to perform a theoretical analysis of delamination fracture behaviour of the Crack Lap Shear layered beam configuration taking into account the material non-linearity. A delamination crack located arbitrarily along the beam height was considered in this study.

Design/methodology/approach
The beam mechanical behaviour was described by using the Ramberg-Osgood stress-strain relation. Fracture was analysed by applying the J-integral approach. Besides by using symmetric Ramberg-Osgood stress-strain curve, fracture was investigated also by Ramberg-Osgood stress-strain curve that is not symmetric with respect to tension and compression. The J-integral solutions were verified by performing elastic-plastic analyses of the strain energy release rate.

Findings
The effects of crack location and material properties on the non-linear fracture behaviour were evaluated. It was found that the material non-linearity leads to increase of the J-integral values. Therefore, the material non-linearity has to be taken into account in fracture mechanics based safety design of structural members composed by layered materials. The analytical solutions derived are very useful for parametric investigations of delamination fracture with considering the material non-linearity. The results obtained can be applied for optimisation of the beam structure with respect to fracture performance.

Originality/value
The present study contributes for the understanding of delamination fracture in layered beams that exhibit non-linear material behaviour.
Female executives and corporate governance
Authors: Vähämaa Emilia 
Published: August 2017

Purpose
The purpose of this paper is to examine whether the gender of the top executives is associated with the strength of corporate governance mechanisms within a firm.

Design/methodology/approach
The paper uses panel and instrumental variable regressions on an eight-year sample of the S&P 1,500 firms.

Findings
The results indicate that firms with female Chief Executive Officers (CEOs) and Chief Financial Officers have higher quality governance practices. Moreover, female CEOs are documented to have the most significant influence on the governance attributes related to the board of directors and takeover defenses mechanisms.

Originality/value
Overall, these findings indicate that the gender of the firm’s executives may have important implications for the strength of corporate governance. The paper promotes the importance of the recent national policies in numerous countries on gender quotas at the executive level.
Effects of lactoferrin and lactoperoxidase‐containing food on the oral microbiota of older individuals
Authors: Nakano Manabu , Wakabayashi Hiroyuki , Sugahara Hirosuke , Odamaki Toshitaka , Yamauchi Koji , Abe Fumiaki , Xiao Jin‐Zhong , Murakami Kohji , Ishikawa Kentaro , Hironaka Shouji 
Published: September 2017

ABSTRACTThe oral microbiota influences health and disease states. Some gram‐negative anaerobic bacteria play important roles in tissue destruction associated with periodontal disease. Lactoferrin (LF) and lactoperoxidase (LPO) are antimicrobial proteins found in saliva; however, their influence on the whole oral microbiota currently remains unknown. In this randomized, double‐blinded, placebo‐controlled study, the effects of long‐term ingestion of LF and LPO‐containing tablets on the microbiota of supragingival plaque and tongue coating were assessed. Forty‐six older individuals ingested placebo or test tablets after every meal for 8 weeks. The relative abundance of bacterial species was assessed by 16S rRNA gene high‐throughput sequencing. Most of the bacterial species in supragingival plaque and tongue coating that exhibited significant decreases in the test group were gram‐negative bacteria, including periodontal pathogens. Decreases in the total relative abundance of gram‐negative organisms in supragingival plaque and tongue coating correlated with improvements in assessed variables related to oral health, such as oral malodor and plaque accumulation. Furthermore, there was significantly less microbiota diversity in supragingival plaque at 8 weeks in the test group than in the placebo group and low microbiota diversity correlated with improvements in assessed variables related to oral health. These results suggest that LF and LPO‐containing tablets promote a shift from a highly diverse and gram‐negative‐dominated to a gram‐positive‐dominated community in the microbiota of supragingival plaque and tongue coating. This microbial shift may contribute to improvements in oral health, including oral malodor and state of the gingiva.