bluuebunny/crossref_metadata_2025_split huggingface dataset:
A biomechanical analysis of traumatic brain injury for slips and falls from height
Authors: Post Andrew , Taylor Karen , Hoshizaki T Blaine , Brien Susan , Cusimano Michael D , Marshall Shawn 
Published: July 2017

Background Falls are a common cause of morbidity and mortality in society, particularly among the aged and young. There has been research to describe the epidemiology of these types of events, but to date there has been few correlations of clinical brain injury outcomes and metrics used in biomechanical research; parameters often used to help develop protective devices and environments. The purpose of this research was to examine the kinematic characteristics of falls from standing and higher heights in an effort to understand how clinical brain injury is predicted by biomechanical injury metrics. Methods Computer simulations of nine traumatic brain injury events from falling were conducted to determine the biomechanical metrics associated with each injury case. Results Many of the impacts were to the occipital region of the head, as would be expected from backward falls or from slipping from ladders. These falls resulted in low rotational acceleration values and high linear accelerations, suggesting linear acceleration may be an important characteristic of this injury mechanism. In addition, even though each case resulted in severe head injury, the HIC15 (Head Injury Criterion) values did not consistently predict injury when the kinematic output was lower than 300 g. This result suggests that HIC15 may have limited value as a predictor for high energy short duration direct impacts to the head. The results supported a relationship between fall height and duration of loss of consciousness, with the higher fall heights producing longer times of unconsciousness. Conclusion Linear acceleration may be the metric that should be focused on to develop further strategies to protect against severe TBI for fall cases similar to those in this research. In addition, the HIC15 may not be suitable as a predictive metric for TBI and future development of protective devices for the prevention of head injury should take this into account.
RSA in Spine: A Review
Authors: Humadi Ali , Dawood Sulaf , Halldin Klas , Freeman Brian 
Published: July 2017

Study Design: Systematic review of literature. Objectives: This systematic review was conducted to investigate the accuracy of radiostereometric analysis (RSA), its assessment of spinal motion and disorders, and to investigate the limitations of this technique in spine assessment. Methods: Systematic review in all current literature to invesigate the role of RSA in spine. Results: The results of this review concluded that RSA is a very powerful tool to detect small changes between 2 rigid bodies such as a vertebral segment. The technique is described for animal and human studies for cervical and lumbar spine and can be used to analyze range of motion, inducible displacement, and fusion of segments. However, there are a few disadvantages with the technique; RSA percutaneous procedure needs to be performed to implant the markers (and cannot be used preoperatively), one needs a specific knowledge to handle data and interpret the results, and is relatively time consuming and expensive. Conclusions: RSA should be looked at as a very powerful research instrument and there are many questions suitable for RSA studies.
Evaluation of microvascular endothelial function in patients with infective endocarditis using laser speckle contrast imaging and skin video-capillaroscopy: research proposal of a case control prospective study
Authors: Barcelos Amanda , Lamas Cristiane , Tibiriça Eduardo 
Published: July 2017

AbstractObjectiveInfective endocarditis is a severe condition with high in-hospital and 5-year mortality. There is increasing incidence of infective endocarditis, which may be related to healthcare and changes in prophylaxis recommendations regarding oral procedures. Few studies have evaluated the microcirculation in patients with infective endocarditis, and so far, none have utilized laser-based technology or evaluated functional capillary density. The aim of the study is to evaluate the changes in the systemic microvascular bed of patients with both acute and subacute endocarditis. This is a cohort study that will include adult patients with confirmed active infective endocarditis according to the modified Duke criteria who were admitted to our center for treatment. A control group of sex- and age-matched healthy volunteers will be included. Functional capillary density, which is defined as the number of spontaneously perfused capillaries per square millimeter of skin, will be assessed by video-microscopy with an epi-illuminated fiber optic microscope. Capillary recruitment will be evaluated using post-occlusive reactive hyperemia. Microvascular flow will be evaluated in the forearm using a laser speckle contrast imaging system for the noninvasive and continuous measurement of cutaneous microvascular perfusion changes. Laser speckle contrast imaging will be used in combination with skin iontophoresis of acetylcholine, an endothelium-dependent vasodilator, or sodium nitroprusside (endothelium independent) to test microvascular reactivity.ResultsThe present study will contribute to the investigation of microcirculatory changes in infective endocarditis and possibly lead to an earlier diagnosis of the condition and/or determination of its severity and complications.Trial registrationClinicalTrials.gov ID: NCT02940340.
The Impact of Consumer Search Cost on Assortment Planning and Pricing
Authors: Wang Ruxian , Sahin Ozge 
Published: July 2017

Consumers search for product information to resolve valuation uncertainties before purchase. We incorporate search cost into consumer choice models and study the two-stage consider-then-choose policy. In the first stage, a consumer forms her consideration set by balancing utility uncertainty and search cost. In the second stage, she evaluates all products in her consideration set and chooses the one with the highest net utility. We show that the revenue-ordered assortment (i.e., the offer set that includes products in the revenue-decreasing order) fails to be optimal, although it can obtain at least half the optimal revenue. We propose a k-quasi-attractiveness-ordered assortment and show that it can be arbitrarily near optimal for the market share maximization problem. The assortment problems with search cost are generally NP-hard, so we develop efficient approximation or relatively fast exact algorithms for a variety of assortment problems under the consider-then-choose models with search cost. For the joint assortment planning and pricing problem with homogeneous consumers, we show that the intrinsic-utility-ordered assortment and the quasi-same-price policy, which charges the same price for all products except at most one, are optimal. The online appendix is available at https://doi.org/10.1287/mnsc.2017.2790 . This paper was accepted by Gad Allon, operations management.
Disability Policy Implementation From a Cross-Cultural Perspective
Authors: Verdugo Miguel A. , Jenaro Cristina , Calvo Isabel , Navas Patricia 
Published: July 2017

AbstractImplementation of disability policy is influenced by social, political, and cultural factors. Based on published work, this article discusses four guidelines considered critical for successful policy implementation from a cross-cultural perspective. These guidelines are to: (a) base policy implementation on a contextual analysis, (b) employ a value-based approach, (c) align the service delivery system both vertically and horizontally, and (d) engage in a partnership in policy implementation. Public policy should be understood from a systems perspective that includes cross-cultural issues, such as how different stakeholders are acting and the way they plan and implement policy.
Digital terrestrial television licensing in Greece: Curiouser and curiouser
Authors: Katsirea Irini 
Published: July 2017

Abstract
Since their launching 25 years ago, private television stations in Greece operated under ‘temporary’ licences on the basis of legal provisions that had been declared unconstitutional by the Supreme Administrative Court of Greece. A law, which was passed by the Greek Parliament on 24 October 2015, promised to put an end to this state of disorder by finally regulating the licencing of digital terrestrial television (DTT) providers. However, the new legislation proved extremely controversial, dividing government and opposition parties. The general outcry against the new licensing framework did not deter the government from granting only four ten-year licences through an auction procedure held by the Secretariat General of Information and Communication. The main criticisms voiced against this arrangement were the following: first, that it bypassed the independent regulatory authority Ethniko Symvoulio Radiotileorasis (ESR), and second, that the arbitrary limitation of the number of licenses placed commercial television under the tutelage of the state and reduced pluralism. The Greek government, on the other hand, contended that it was solely competent to regulate DTT licensing, that the Greek audio-visual market could not sustain more channels, and that the new regime would put an end to corruption in the sector. This article proposes to examine the validity of these arguments, and to discuss the impact of the new legislation on media freedom in Greece.
Making public service under social media logics
Authors: Hokka Jenni 
Published: July 2017

Abstract
The scale and form of social media services provided by public service companies have been under heated discussion for the last decade. In this article I approach this issue from the perspective of creative labour. How do workers perceive public service values and their applicability to social media? How are workers adapting their practices from broadcasting to narrowcasting? The article builds on José van Dijk and Thomas Poell’s idea of social media logics. This analytical prism is used to analyse a specific case study, a Finnish multiplatform serial Uusi Päivä (2010- ). The analysis shows that social media logic modifies the conditions of public service media. Reaching the users as well as producing spreadable content is a significant challenge for public service companies, as their main operating principles still mostly date back to the time of mass media logics. Yet, the workers also see great possibilities in creating new kinds of public service through social media.
The death of B92: How it survived Milosevic’s authoritarianism but didn’t survive democracy
Authors: Stavljanin Dragan , Veljanovski Rade 
Published: July 2017

Abstract
This article examines how broadcaster B92, once the top-billed independent media in Serbia that resisted Milosevic’s authoritarianism, could not survive democracy. Although it withstood the crackdown and censorship of the war regime, it was eventually sunk by what could be considered ‘market censorship’. B92 was forced into privatization because the international donors, who assisted it during the Milosevic regime, tapered their support on the assumption that in a democratic and marketbased environment, all media outlets should have an equal chance to grow and to become self-sustainable. The story of B92 illustrates how the rapid liberalization that occurred lead not to an ideal ‘marketplace of ideas’ furthering democracy, but to commercialization and the drastic loss of space on the airwaves for alternative voices and critical investigative journalism.
Dilemmas of purpose in higher popular music education: A critical portrait of an academic field
Authors: Parkinson Tom 
Published: July 2017

Abstract
Since the first degree programme in popular music opened in 1990, the academic field of higher popular music education (HPME) has grown exponentially in the United Kingdom. The current provision includes 128 programmes offered by 47 institutions including Russell Group universities, specialist conservatoires and private providers. The majority of programmes, however, are found within ‘post-92’ institutions, reflecting the political and cultural conditions from which the field has emerged. This article critically appraises the field’s emergence within the frames of higher education policy, discourses of employability and widening participation, the high/low culture dichotomy and the dialectic of commerce and art, which has been identified as a perennial issue at the crux of popular music as a cultural phenomenon. It proposes that the field is characterized by dilemmas concerning its nature and purpose, and that the narrative of HPME’s emergence might serve as a valuable case study against which other young fields or subject areas might be compared and appraised.
Becoming a rock band: The challenges of group identity
Authors: Malm Tobias 
Published: July 2017

Abstract
Rock bands feature increasingly in music education. They are essential parts of popular culture and are increasingly highlighted as entrepreneurial organizations in a global music industry. However, to develop and stay together as a band is a difficult task. This study aims to develop an understanding of the challenges of becoming a rock band, shedding new light on previously underexplored complexities of band life by considering the impact of group identities. The methodology entails storytelling and identity work, inspired by a biographical approach. Six explorative interviews with band members were conducted. The results suggest that productive activities form several kinds of work group identities, whereas low-activity periods threaten group identification. The article discusses how diversity of group identities promotes development while uniformity promotes stability. To cope with this paradox, this article suggests that band members ought to learn to develop multiple group identities and flexible ways of relating to one another.
Subharmonic solutions of Hamiltonian systems displaying some kind of sublinear growth
Authors: Fonda Alessandro , Toader Rodica 
Published: July 2017

AbstractWe prove the existence and multiplicity of subharmonic solutions for Hamiltonian systems obtained as perturbations ofNplanar uncoupled systems which, e.g., model some type of asymmetric oscillators. The nonlinearities are assumed to satisfy Landesman–Lazer conditions at the zero eigenvalue, and to have some kind of sublinear behavior at infinity. The proof is carried out by the use of a generalized version of the Poincaré–Birkhoff Theorem. Different situations, including Lotka–Volterra systems, or systems with singularities, are also illustrated.
Was ist orthodoxe Kritische Theorie?
Authors: Freyenhagen Fabian 
Published: July 2017

Abstract
Lukács’ famously asked: “What is orthodox Marxism?” His answer was that a certain method was quintessential. What if we ask the orthodox question about Critical Theory? The answer in this case, I propose, is not a particular method. Moreover, what’s critical about Critical Theory is also not – contrary to prevailing opinions in the literature – a program of justification. In fact, only without such a program can Critical Theory be adequately and appropriately critical. The position I advocate returns to insights from Horkheimer’s writings of the 1930s (and Adorno’s work). Indeed, it is also orthodox in another sense: taking the conviction of a partisan interest – the interest in abolishing social injustice, misery and unfreedom – as the only general criterion for Critical Theory. Its task is to contribute to the struggle against the aforementioned negative elements through conceptual work, self-reflection, and a critical appropriation of the genuine insights of traditional theorising. I conclude by outlining briefly the implications of this position for the mode of approaching social philosophy (and specifically the idea of social pathology).
Preparation and characterization of flame retardant epoxy resins based on phosphorus-containing biphenyl-type phenolic resin
Authors: Ding Jiapei , Tao Zhiqiang , Fan Lin , Yang Shiyong 
Published: July 2017

AbstractA phosphorus-containing biphenyl-type phenolic resin (PBP) was prepared by dehydration polycondensation of the DOPO-disubstituted 4,4’- biphenyldimethanol compound (BDCA-2DOPO) with phenol in the presence of strong Lewis acid , in which BDCA-2DOPO was prepared by the reaction of DOPO with 4,4'-biphenyldicarboxaldehyde. The PBP resin has been evaluated as the curing agent of o-cresol epoxy resins. Experimental results indicated that the PBPcured epoxy resins exhibited good thermal stability, high char yields at 700 oC and outstanding flame retardant properties. UL 94 V-0 classifications could be obtained when the phosphorus loading in the epoxy resin is higher than 1.8 wt%.
Effect of cure cycle on temperature/degree of cure field and hardness for epoxy resin
Authors: Zhang Jing , Xu Yachen , Huang Pei 
Published: July 2017

AbstractA 3-dimensional finite element model is developed to simulate and analyze the temperature and degree of cure field of epoxy casting part during cure process. The present model based on general finite element software ABAQUS is verified by literature example and experimental data. The numerical results show good agreement with literature example and measured data, and are even more accurate than the simulation of literature. After modeling successfully, the influences of heat convection coefficients and temperature cure cycle ramps have on the temperature and degree of cure gradient are investigated. Moreover, the effect of non-uniform temperature and degree of cure field within epoxy casting part on mechanical properties is demonstrated. The present model provides an accurate and novel method that allows further insight into the process of cure for epoxy resin.
Thermoresponsive aggregation behavior of NiPAAm/glyco monomer block copolymers studied by dynamic light scattering
Authors: Özyürek Zeynep , Voit Brigitte , Krahl Franziska , Arndt Karl-Friedrich 
Published: July 2017

AbstractBlock and random copolymers containing N-isopropylacrylamide and (α- D-glucofuranosyl)-6-methacrylamido units were analyzed according to their temperature dependent aggregation behavior. Whereas a 45:55 random copolymer does not exhibit any LCST behavior below 100 °C due to the incorporation of the hydrophilic glyco monomer units, the phase transition could be retained in the physiological range in block copolymers even at a glyco monomer content above 55 mol%. DSL studies revealed that the aggregates of about 50 nm are stabilized above the transition temperature when the glyco monomer block dominates, whereas a glyco block molar ratio of 45% is not sufficient to prevent precipitation of the polymers as evidenced by turbidity measurements. Temperature dependent DLS studies revealed further that below the phase transition temperature an equilibrium between single macromolecules and aggregates is formed.
Comparison of cation effects on phase transitions of kappa and iota carrageenan
Authors: Tarı Özlem , Pekcan Önder 
Published: July 2017

AbstractPhase transitions of kappa and iota carrageenan in KCl, NaCl, and CaCl, solutions were separately studied during heating and cooling processes by using fluorescence technique. Scattered light, Isc and fluorescence intensity, I was monitored against temperature to determine the critical transition temperatures and exponents. Kappa and iota carrageenans with monovalent (KCl, NaCl) salt system presented only coil to double helix (c-h) and double helix to coil (h-c) transitions upon cooling and heating processes, respectively. Two transition regions were observed in both heating and cooling of the iota carrageenan in CaCl2 solution while in kappa carrageenan only (c-h) and (h-c) transitions was detected. During heating, dimers decompose into double helices by making (d-h) transition. At the high temperature region (h-c) transition takes place. During cooling, back transitions repeat themselves. A hysteresis was observed between (h-c) and (c-h) for the kappa and iota carrageenan salt system (except CaCl2), respectively. Dimer to double helix (d-h) and double helix to dimer (h-d) transitions were observed for iota carrageenan in CaCl2 salt. The gel fraction exponent b was measured and found to be in accord with the classical Flory-Stockmayer Model for both kappa and iota carrageenan salt systems
Application of Direct Resistance Heating in Hot Forging and Analysis of Processing Parameters based on Thermo-electro-mechanical Coupling FEM
Authors: Zhengxing Men , Menghan Wang , Yaxin Ma , Taiwen Yue , Ruilin Liu 
Published: July 2017

AbstractA series of experiments were designed in order to directly heat the billet of 42CrMo4 to the forming temperature in the dies prior to forming and continue to heat the billet during the forming process. Processing parameters during heating and forming were investigated by experimental method and thermo-electro-mechanical coupling FEM. The experimental results show that prior to forming the billet could be rapidly heated to forming temperature under relatively low initial contact pressure, and the heating temperature was proportional to the square of the current intensity. When the heating current remained constant, the heating temperature could not increase with heating time. During the forming process, the billet cooling rate slowed down and the forming time was extended due to the continuous resistance heating during forming. Finally, an incrementally coupled thermo-electro-mechanical model has been developed to analyze the hot-forging process by direct resistance heating. To obtain the transient temperature field prior to forming, a simple model of contact resistance was used in the thermal-electrical simulation, in which the electrical conductance of the contact resistance was proportional to the heating temperature. Contrasted the experimental results and the simulation results, it was found that they coincided well.
Does EAP writing instruction reduce L2 errors? Evidence from a longitudinal corpus of L2 EAP essays and reports
Authors: Crosthwaite Peter 
Published: July 2017

AbstractDespite the efforts exerted on error correction by teachers and students during English for Academic Purposes (EAP) courses, the literature is split about whether such instruction succeeds in reducing grammatical and lexical errors in student writing. In this study, a longitudinal corpus of essays and reports collected at three key data points along a tertiary EAP course (pre-course, immediate post-course and final assessment) totalling 205,682 words was annotated for 12,996 errors across 10 grammatical and lexical error types. The results, including a mixed-effects linear model, showed a general significant decline in the number of errors produced over the duration of the course. However, closer examination revealed that the frequencies of the majority of individual lexical and grammatical error categories remained unchanged over time, despite specific out-of-class instruction on these errors as well as numerous occasions where teachers provided written corrective feedback. The overall usefulness of the error correction feedback and instruction resulting from the EAP course in question therefore remains inconclusive, although students and other stakeholders may still call for the inclusion of such feedback and instruction on EAP curricula.