bluuebunny/crossref_metadata_2025_split huggingface dataset:
The variation of comonomers feeding profile to design the distribution of chains composition for the optimization of the mechanical properties in copolymer systems
Authors: Arnez-Prado Alvaro H. , González-Ortiz Luis J. , Aranda-García Francisco J. , Jasso-Gastinel Carlos F. 
Published: August 2014

AbstractSemicontinuous seeded emulsion copolymerizations, using 5 different types of feeding profiles of comonomers (styrene/butyl acrylate, S/BA) were carried out, to vary in a gradual manner the composition of the copolymer chains formed throughout the reactions (gradient composition copolymer, GCC). For comparison, equivalent core-shell type polymeric materials were synthesized in two stages (TS). In all reactions, the S/BA global mass ratio was: 70/30. To estimate the weight composition distribution (WCD) of the copolymer chains, the cumulative styrene content in the polymer mass was followed throughout the reaction (1H-NMR). Average molecular weights were determined using SEC. The differences in mechanical performance were established, carrying out a mechanodynamic (DMA), and mechanostatic characterization (stress-strain at several temperatures and, Izod testing). The area under the loss modulus curve (LA) was correlated with Izod impact strength, showing the damping superiority of the GCCs over the T-S material. At all tested temperatures (between 25 and 70 °C), the GCC materials exhibited yielding and plastic deformation, while the T-S material presented brittle fracture in that temperature interval. The WCDs were used to elucidate the differences in mechanical behaviour among GCC materials. The feeding profile variation in combination with the WCD analysis represents a novel methodology to produce tailor made copolymers.
New Tone Reservation Technique for Peak to Average Power Ratio Reduction
Authors: Wilharm Joachim , Rohling Hermann 
Published: August 2014

AbstractIn Orthogonal Frequency Division Multiplexing (OFDM) the transmit signals have a highly fluctuating, non-constant envelope which is a technical challenge for the High Power Amplifier (HPA). Without any signal processing procedures the amplitude peaks of the transmit signal will be clipped by the HPA resulting in out-ofband radiation and in bit error rate (BER) performance degradation. The classical Tone Reservation (TR) technique calculates a correction signal in an iterative way to reduce the amplitude peaks. However this step leads to a high computational complexity. Therefore, in this paper an alternative TR technique is proposed. In this case a predefined signal pattern is shifted to any peak position inside the transmit signal and reduces thereby all amplitude peaks. This new procedure is able to outperform the classical TR technique and has a much lower computational complexity.
Thickness Optimization for Petroleum Coke in Microwave Dehydrating Based on the Analysis of Dynamic Absorption Efficiency
Authors: Shang Xiaobiao , Chen Junruo , Peng Jinhui , Chen Hua , Zhang Weifeng , Guo Shenghui , Chen Guo 
Published: August 2014

AbstractAn analytical approach is proposed to optimize the thickness of petroleum coke for achieving maximum microwave power absorption in microwave heating based on analysis of reflection loss (RL). The microwave RL of the petroleum coke layer was studied over the moisture content range of 1%–5% at 20 °C and the petroleum coke (10% moisture content) in the temperature range of 20 to 100 °C at 2.45 GHz. The results show that RL depends sensitively on the thickness of the petroleum coke and the absorption peak shifts towards a larger thickness as the moisture content of the petroleum coke increases. There exists a matching thickness corresponding to the maximum microwave absorption, the maximum absorbing peak decreases when the thickness of petroleum coke exceeds the matching thickness. We also show that the absorption peak is found to move towards a smaller thickness region with increasing petroleum coke temperature.
The Cyclic Carburization Process by Bi-velocity Method
Authors: Wierzba Bartek , Romanowska Jolanta , Kubiak Krzysztof , Sieniawski Jan 
Published: August 2014

AbstractThe paper presents numerical analysis of the cyclic external fluxes on diffusion process. It is shown, that the cycles characteristics strongly affects the concentration profiles and stress distribution in material. Calculations were performed using the bi-velocity method with the stress field factor. Moreover, the more general model describing the cyclic carburization process influenced by self stress was formulated. Numerical solutions were obtained assuming composition dependent diffusion coefficients. The results of simulation were compared with the experimental data. The model proposed in this paper may be applied to other diffusion controlled processes with the external flux of the diffusive component.
Reasons (not) to Spend a Few Billions More on EHRs: How Human Factors Research Can Help
Authors: Aimé X. , Declerck G. ,   Section Editors for the IMIA Yearbook Section on Human Factors and Organizational Issues
Published: August 2014

Summary
Objectives: To select best medical informatics research works published in 2013 on electronic health record (EHR) adoption, design, and impact, from the perspective of human factors and organizational issues (HFOI).
Methods: We selected 2,764 papers by querying PubMed (Mesh and TIAB) as well as using a manual search. Papers were evaluated based on pre-defined exclusion and inclusion criteria from their title, keywords, and abstract to select 15 candidate best papers, finally reviewed by 4 external reviewers using a standard evaluation grid.
Results: Five papers were selected as best papers to illustrate how human factors approaches can improve EHR adoption and design. Among other contributions, these works: (i) make use of the observational and analysis methodologies of social and cognitive sciences to understand clinicians’ attitudes towards EHRs, EHR use patterns, and impact on care processes, workflows, information exchange, and coordination of care; (ii) take into account macro- (environmental) and meso- (organizational) level factors to analyze EHR adoption or lack thereof; (iii) highlight the need for qualitative studies to analyze the unexpected side effects of EHRs on cognitive and work processes as well as the persistent use of paper.
Conclusion: Selected papers tend to demonstrate that HFOI approaches and methodologies are essential to bridge the gap between EHR systems and end users, and to reduce regularly reported adoption failures and unexpected consequences.
Big Data and Smart Health Strategies: Findings from the Health Information Systems Perspective
Authors: Cuggia M. , Toubiana L. ,   Section Editors for the IMIA Yearbook Section on Health Information Systems
Published: August 2014

Summary
Objectives: To summarize excellent current research in the field of Health Information Systems.
Method: Creation of a synopsis of the articles selected for the 2014 edition of the IMIA Yearbook.
Results: Four papers from international peer reviewed journals were selected and are summarized.
Conclusions: Selected articles illustrate current research regarding the impact and the evaluation of health information technology and the latest developments in health information exchange.
Managing Free Text for Secondary Use of Health Data
Authors: Griffon N. , Charlet J. , Darmoni S. J. ,   Section Editors for the IMIA Yearbook Section on Knowledge Representation and Management
Published: August 2014

Summary
Objective: To summarize the best papers in the field of Knowledge Representation and Management (KRM).
Methods: A comprehensive review of medical informatics literature was performed to select some of the most interesting papers of KRM and natural language processing (NLP) published in 2013.
Results: Four articles were selected, one focuses on Electronic Health Record (EHR) interoperability for clinical pathway personalization based on structured data. The other three focus on NLP (corpus creation, de-identification, and co-reference resolution) and highlight the increase in NLP tools performances.
Conclusion: NLP tools are close to being seriously concurrent to humans in some annotation tasks. Their use could increase drastically the amount of data usable for meaningful use of EHR.
Restraint of the G2/M Transition by the SR/RRM Family mRNA Shuttling Binding Protein SNXAHRB1 in Aspergillus nidulans
Authors: James Steven W , Banta Travis , Barra James , Ciraku Lorela , Coile Clifford , Cuda Zach , Day Ryan , Dixit Cheshil , Eastlack Steven , Giang Anh , Goode James , Guice Alexis , Huff Yulon , Humbert Sara , Kelliher Christina , Kobie Julie , Kohlbrenner Emily , Mwambutsa Faustin , Orzechowski Amanda , Shingler Kristin , Spell Casey , Anglin Sarah Lea 
Published: August 2014

Abstract
Control of the eukaryotic G2/M transition by CDC2/CYCLINB is tightly regulated by protein–protein interactions, protein phosphorylations, and nuclear localization of CDC2/CYCLINB. We previously reported a screen, in Aspergillus nidulans, for extragenic suppressors of nimX2cdc2 that resulted in the identification of the cold-sensitive snxA1 mutation. We demonstrate here that snxA1 suppresses defects in regulators of the CDK1 mitotic induction pathway, including nimX2cdc2, nimE6cyclinB, and nimT23cdc25, but does not suppress G2-arresting nimA1/nimA5 mutations, the S-arresting nimE10cyclinB mutation, or three other G1/S phase mutations. snxA encodes the A. nidulans homolog of Saccharomyces cerevisiaeHrb1/Gbp2; nonessential shuttling messenger RNA (mRNA)-binding proteins belonging to the serine-arginine-rich (SR) and RNA recognition motif (RRM) protein family; and human heterogeneous ribonucleoprotein-M, a spliceosomal component involved in pre-mRNA processing and alternative splicing. snxAHrb1 is nonessential, its deletion phenocopies the snxA1 mutation, and its overexpression rescues snxA1 and ΔsnxA mutant phenotypes. snxA1 and a second allele isolated in this study, snxA2, are hypomorphic mutations that result from decreased transcript and protein levels, suggesting that snxA acts normally to restrain cell cycle progression. SNXAHRB1 is predominantly nuclear, but is not retained in the nucleus during the partially closed mitosis of A. nidulans. We show that the snxA1 mutation does not suppress nimX2 by altering NIMX2CDC2/NIMECYCLINB kinase activity and that snxA1 or ΔsnxA alter localization patterns of NIMECYCLINB at the restrictive temperatures for snxA1 and nimX2. Together, these findings suggest a novel and previously unreported role of an SR/RRM family protein in cell cycle regulation, specifically in control of the CDK1 mitotic induction pathway.
DEVELOPMENT OF A HYDRODYNAMIC MODEL OF A HYDROCYCLONE INCLUDING THE SIMULATION OF AIR-CORE EFFECT, USING THE FINITE VOLUME METHOD
Authors: Aguilera Gabriel Felipe , Arismendy Juan Esteban 
Published: August 2014

The hydrocyclone is one of the most used classification equipment in industry, particularly in mineral processing. Maybe its main characteristic is to be a hydrodynamic separation equipment, whereby it has a high production capability and different levels of efficiency are depending on the geometrical configuration, operational parameters and the type of material to be processed. Nevertheless, there are a few successful studies regarding the modelling and simulation of its hydrodynamic principles, because the flow behavior inside is quite complex. Most of the current models are empirical and they are not applicable to all cases and types of minerals.
One of the most important problems to be solved, besides the cut size and the effect of the physical properties of the particles, is the distribution of the flow inside the hydrocyclone, because if the work of the equipment is at low slurry densities, very clear for small hydrocyclones, its mechanic behavior is a consequence of the kind of liquid used as continuous phase, being water the most common liquid.
This work shows the modelling and simulation of the hydrodynamic behavior of a suspension inside a hydrocyclone, including the air core effect, through the use of finite differences method. For the developing of the model, the Reynolds Stress Model (RSM) for the evaluation of turbulence, and the Volume of Fluid (VOF) to study the interaction between water and air were used. Finally, the model shows to be significant for experimental data, and for different conditions of an industrial plant.
Tranexamic Acid Reduces Blood Loss and Transfusion in Patients Undergoing Total Knee Arthroplasty without Tourniquet: A Prospective Randomized Controlled Trial
Authors: Bidolegui Fernando , Arce Guillermo , Lugones Alfonso , Pereira Sebastián , Vindver Gabriel 
Published: August 2014

Introduction :Blood loss during and after total knee arthroplasty (TKA) can lead to substantial morbidity and the need for blood transfusions. There are several methods to minimize blood loss and to decrease transfusion rates in patients undergoing TKA. Tranexamic acid is an antifibrinolytic agent with known efficacy for achieving these goals. Currently, many surgeons are performing TKA without the use of tourniquet. Consequently, the aim of the study is to evaluate whether tranexamic acid reduces blood loss during and after TKA without the adjunctive use of above-the-knee tourniquet.Methods :We performed a prospective randomized controlled trial (1:1 fashion) on the use of tranexamic acidversusplacebo in 50 patients undergoing TKA (without tourniquet). The treatment group received two (preoperative and postoperative) 15 mg/kg doses. The primary endpoint was blood transfusion rate. We collected data about demographic and procedural characteristics, hemoglobin and hematocrit values, drain blood loss at 24 hours as well as adverse events.Results :There were no transfusions in the treatment group, whereas 32% of the control group required transfusion (p<0.01). The treatment group had higher hematocrit and hemoglobin levels at 24, 48 and 72 hours after surgery (all p<0.01) and lower drain loss at 24hours (363.4±141vs626±260ml, p=<0,001). There were no in-hospital or six-month thromboembolic complications.Discussion :A double-dose of tranexamic acid was safe and effective, reducing blood loss and preventing the need of blood transfusion in patients undergoing TKA without above-the-need tourniquet.
Camouflage effects following resin infiltration of postorthodontic white-spot lesions in vivo: One-year follow-up
Authors: Eckstein Amely , Helms Hans-Joachim , Knösel Michael 
Published: August 2014

ABSTRACT

Objective:
To assess camouflage effects by concealment of postorthodontic white-spot lesions (WSLs) to sound adjacent enamel (SAE) achieved over 12 months with resin infiltration (Icon, DMG, Hamburg, Germany).

Methods:
Twenty subjects (trial teeth nteeth = 111) who had received resin infiltration treatment of noncavitated postorthodontic WSLs were contacted for a 1-year follow-up assessment of CIE-L*a*b* colors (T12). Color and lightness (CIE-L*a*b*) data for WSLs and SAE were compared to baseline data assessed before infiltration (T0) and those assessed after 6 months (T6), using a spectrophotometer. The target parameter was the difference between the summarized color and lightness values (ΔEWSL/SAE). Intergroup (WSL, SAE) and intertime comparisons (T0 vs T6, T12) were performed using paired t-tests at a significance level of α = 5%.

Results:
Nine subjects (trial teeth nteeth = 49; male/female ratio 5/4; age range 13–19 years) were available at T12. After the highly significant reduction of ΔEWSL/SAE discrepancies between T0 and T6, analysis of 12-month records revealed color and lightness discrepancy of WSL vs SAE that was significantly decreased compared with baseline, indicating an assimilation of WSL color to SAE appearance after infiltration, while an additional reduction of discrepancies between T6 and T12 was not significant.

Conclusion:
As color and lightness characteristics of the Icon infiltrant as well as the esthetic camouflage effects achieved by WSL infiltration were not altered significantly or clinically relevant after 12 months, the method of resin infiltration can be recommended for an enduring esthetic improvement of postorthodontic WSL. (Angle Orthod. 2015;85:374–380.)
The importance of family support in old age
Authors: Świderska Mariola 
Published: August 2014

Abstract
The image of the modern older man is often far from the old man withdrawing from life. Participation of seniors in the lectures of Universities of the Third Age or cross-country skiing became obvious and not unusual. However, older people often feel psychological and social loneliness, as well as a high need for security and belonging. All of this needs is able to meet properly functioning family.
Communication with a mother and popularity of an adolescent in a school class
Authors: Morawiec Magdalena , Napora Elżbieta 
Published: August 2014

Abstract
The aim of the research was to obtain the answer to the research problem - does communication with a mother influence the popularity of an adolescent among peers? While conducting the research Parent Adolescent Communication Scale PACS and a classic sociometric technique by J.L. Moreno were used. The obtained results have not managed to establish unequivocally that satisfying communication with a mother influences both popularity as well as the lack of attractiveness of an adolescent in a school class and his favourable relations with peers.
Preference Markets in New Product Development
Authors: Dahan Ely , Soukhoroukova Arina , Spann Martin 
Published: August 2014

Abstract
Preference markets address the need for scalable, fast and engaging market research in new product development. The Web 2.0 paradigm, in which users contribute numerous ideas that may lead to new products, requires new methods of screening those ideas for their marketability and preference markets offer just such a mechanism. For faster new product development decisions, a flexible prioritization methodology for product features and concepts is tested. It scales up in the number of testable alternatives, limited only by the number of participants. New product preferences for concepts, attributes and attribute levels are measured by trading stocks whose prices are based upon share of choice of new products and features. Benefits of preference markets include speed, scalability, flexibility, and respondent enthusiasm for the method.
Different Channel – Different Price? INVESTIGATING THE PRACTICE OF MULTI-CHANNEL PRICE DIFFERENTIATION
Authors: Eckert Christine 
Published: August 2014

Abstract
Price differentiation has long been recognized as a strategy that companies can use to increase profits when consumers’ tastes and valuations of a good price vary. Companies engaging in price differentiation have the opportunity to increase profits considerably compared to those which use a uniform pricing strategy. Accordingly, it should be beneficial for companies to exploit the possibility of charging different prices in online and offline channels as they offer different shopping benefits and are differently valued by consumers. nevertheless, it can be observed that some multi-channel retailers prefer to charge uniform prices in online and offline channels. They argue for consistent prices across distribution channels to maintain a strong brand - and because varying prices may lead to customers’ confusion, anger, irritation and perceptions of price unfairness.
Preference Measurement with Conjoint Analysis. Overview of State-of-the-Art Approaches and Recent Developments
Authors: Eggers Felix , Sattler Henrik 
Published: August 2014

Abstract
Determining consumer preferences is still one of the most important topics in marketing research. Not surprisingly, numerous approaches have been developed for this task. Conjoint measurement techniques are among the most prominent and different forms have emerged over the years. Depending on the specific research setting, all of them have their advantages and drawbacks. The authors discuss the nature and applicability of recent conjoint approaches and provide examples. Guidelines for selecting the optimal technique help to identify which approach works best in a given situation.
Age and Land Use as Factors Differentiating Hydrochemistry and Plant Cover of Astatic Ponds in Post-Agricultural Landscape
Authors: Mętrak Monika , Pawlikowski Paweł , Suska-Malawska Małgorzata 
Published: August 2014

Abstract
Small, astatic ponds are important features of post-glacial landscape, which support heterogeneity and biodiversity of agricultural areas. In the presented research we explored differences in hydrochemistry and plant cover of 20 small ponds located in Northeastern Poland, characterized by diverse age and developed in differently managed areas. According to our research, though changes in water level are under direct influence of water balance in the catchment, to which belonged the ponds, their hydrochemistry seemed to be shaped by processes at the level lower than the catchment scale. Age of the ponds appeared to be an important factor influencing density and species composition of vegetation developed on the studied ponds.
The Influence of Permanent Grasslands on Nitrate Nitrogen Loads in Modelling Approach
Authors: Śmietanka Maria 
Published: August 2014

Abstract
The water pollution in areas with intensive agriculture is growing rapidly. Computer model is a tool which can help in finding solutions for water pollution reduction and help in creation of catchment management plans. In this research the SWAT model (Soil and Water Assessment Tool) was used to test the influence of introduction of permanent grasslands into the catchment on nitrate nitrogen load in surface water. Small catchment of upper Zgłowi?czka River in central Poland with intensive agriculture was chosen as a test site. Model was fed with data about land use, soils, weather, elevation and management practices and calibrated and validated using flow data and nitrate nitrogen loads data. Then 2 scenarios with land use change were tested. A part of arable land was changed into permanent grasslands. The results show that permanent grasslands are effective in reducing nitrate nitrogen load. The load was reduced by 19% when permanent grasslands constituted 10% of arable land and by 38% with permanent grasslands taking up 20% of arable land.
The Influence of The „KOMISARZ Alex“ TV Series on The Development of Łódź (Poland) in The Eyes of City Inhabitants
Authors: Cudny Waldemar 
Published: August 2014

Abstract
The issues of creative and cultural industries and their role in city branding and development are explored in this paper. Activities enhancing city placement and city branding via a TV series are subject to enquiry. As a result, the city becomes a film-friendly destination, attracting people and firms from the film industry. Besides, the city is perceived more favourably, standing out from the competition and possibly attracting tourists and potential investors and immigrants. Such a policy has been introduced in Łódź, a large Polish post-socialist and post-industrial city. With the city authority’s support, the town has become the location of a popular TV crime series, entitled “Komisarz Alex” (“Inspector Alex”). The main aim of the research was to investigate how Łódź inhabitants perceive the series and what influence they think the film-making would have on the city. The evaluation of the perception of the series is based on structured interviews, and is generally very positive.