bluuebunny/crossref_metadata_2025_split huggingface dataset:
LA HIPÓTESIS DE LOS CUADROS DE SIGNIFICADO EN LA SOLUCIÓN DE PROBLEMAS MATEMÁTICOS
Authors: Andrade Alejandro , Lotero Botero Amparo , Andrade Londoño Edgar A. 
Published: March 2017

El presente texto tiene la intención de describir un fenómeno observado cuando niños y niñas de 6 y 7 años, quienes aún no habían recibido instrucción formal de la división, intentaron dar solución a un problema de repartición por medio de dibujos. El fenómeno llamado “cuadros de significado” intenta explicar por qué algunos niños tuvieron éxito en la solución de problemas y otros no. Por medio de un estudio de casos ilustramos empíricamente esta hipótesis, la cual se presenta como una herramienta teórica y metodológica poderosa para la conceptualización de la solución de problemas aritméticos y la comprensión que subyace al pensamiento matemático de los niños de esta edad. No obstante, es necesario seguir expandiendo nuestro análisis y la aplicación de este marco de referencia. Esto conllevaría a reconsiderar prácticas educativas y evaluativas convencionales. En este artículo intentamos señalar un camino por el cual podrían realizarse estos cambios.
Hip revision arthroplasty for failed osteosynthesis in periprosthetic Vancouver type B1 fractures using a cementless, modular, tapered revision stem
Authors: Fink B. , Oremek D. 
Published: March 2017

AimsTo evaluate the hypothesis that failed osteosynthesis of periprosthetic Vancouver type B1 fractures can be treated successfully with stem revision using a transfemoral approach and a cementless, modular, tapered revision stem with reproducible rates of fracture healing, stability of the revision stem, and clinically good results.Patients and MethodsA total of 14 patients (11 women, three men) with a mean age of 72.4 years (65 to 90) undergoing revision hip arthroplasty after failed osteosynthesis of periprosthetic fractures of Vancouver type B1 were treated using a transfemoral approach to remove the well-fixed stem before insertion of a modular, fluted titanium stem which obtained distal fixation. These patients were clinically and radiologically followed up for a mean 52.2 months (24 to 144).ResultsAfter a mean of 15.5 weeks (standard deviation (sd) 5.7) all fractures had healed. No stems subsided and bony-ingrowth fixation had occurred according to the classification of Engh et al. The mean Harris Hip Score increased from a pre-operative score of 22.2 points (sd 9.7) to 81.5 points (sd 16.8) 24 months post-operatively. All hips had obtained an excellent result according to the classification of Beals and Tower.ConclusionsThe technique described here for stem revision provides reproducibly good results in the treatment of failed osteosynthesis for Vancouver types B1 periprosthetic fractures of the hip. Cite this article: Bone Joint J 2017;99-B(4 Supple B):11–16.
Mid-term changes in blood metal ion levels after Articular Surface Replacement arthroplasty of the hip
Authors: Galea V. P. , Laaksonen I. , Matuszak S. J. , Connelly J. W. , Muratoglu O. , Malchau H. 
Published: March 2017

Aims Our first aim was to determine whether there are significant changes in the level of metal ions in the blood at mid-term follow-up, in patients with an Articular Surface Replacement (ASR) arthroplasty. Secondly, we sought to identify risk factors for any increases. Patients and Methods The study involved 435 patients who underwent unilateral, metal-on-metal (MoM) hip resurfacing (HRA) or total hip arthroplasty (THA). These patients all had one measurement of the level of metal ions in the blood before seven years had passed post-operatively (early evaluation) and one after seven years had passed post-operatively (mid-term evaluation). Changes in ion levels were tested using a Wilcoxon signed-rank test. We identified subgroups at the highest risk of increase using a multivariable linear logistic regression model. Results There were significant increases in the levels of metal ions for patients who underwent both MoM HRA (Chromium (Cr): 0.5 parts per billion (ppb); Cobalt (Co): 1.1 ppb) and MoM THA (Cr: 0.5 ppb; Co: 0.7 ppb). In a multivariable model considering MoM HRAs, the change in the levels of metal ions was influenced by female gender (Co: Odds Ratio (OR) 1.42; p = 0.002 and Cr: OR 1.08; p = 0.006). The change was found to be irrespective of the initial level for the MoM HRAs, whereas there was a negative relationship between the initial level and the change in the level for those with a MoM THA (Co: OR -0.43; p < 0.001 and Cr: OR -0.14; p = 0.033). Conclusion The levels of metal ions in the blood increase significantly over the period until mid-term follow-up in patients with both a MoM HRA and those with a MoM THA. We recommend that the levels of metal ions be measured most frequently for women with a MoM HRA. While those with a MoM THA appear to stabilise at a certain level, the accuracy of this trend is not yet clear. Vigilant follow-up is still recommended. Cite this article: Bone Joint J 2017;99-B(4 Supple B):33–40.
Ectodermal dysplasia: case report of aesthetic and functional rehabilitation
Authors: Di Lanaro Nattália , Faker Khawana , Paula Viviane Andrade Cancio , Tostes Mônica Almeida 
Published: March 2017

Objective: The aim of this study is to report a case of aesthetic and prosthetic rehabilitation of a male 6-year-old patient diagnosed with Hipohidrotic Ectodermal Dysplasia, attended at the clinic of special patients held in the extension project of the Federal Fluminense University. Methods: This is a clinical, observational and descriptive study where the restorative and rehabilitative treatment was conducted and reported corresponding to the functional and aesthetic needs of the patient. Results: It was realized the reconstruction of the anatomical shape of the teeth 51 and 61 and also was made a partial removable prosthesis to cover the absence of the teeth 71, 72, 74, 81 and 82, offering function, aesthetics and satisfaction reported by the patient. Conclusion: This case reports contributed to the increase of knowledge about the forms of Ectodermal Dysplasia on the importance of the differential diagnosis of the same, as well as to the teaching of the extension project of undergraduate students.
Viral molecular and pathological investigations ofCanid herpesvirus1 infection associated respiratory disease and acute death in dogs
Authors: Piewbang Chutchai , Rungsipipat Anudep , Poovorawan Yong , Techangamsuwan Somporn 
Published: March 2017

AbstractCanid herpesvirus1 (CaHV-1) is a member of the canine infectious respiratory disease complex (CIRDC). The outcome of CaHV-1 infection can be occasionally fatal. So far, no information on CaHV-1 circulation in Thailand has been reported resulting in a lack of preventive strategies. In this study, nasal (NS) and oropharyngeal (OS) swabs were collected from 100 live dogs with respiratory distress. Among them, 23 pleural effusions were aspirated. A panel of CIRDC-associated viruses was screened by (RT)-PCR, including CaHV-1, CIV, CPIV, CDV, CRCoV and CAdV-2, for all collected samples. The CaHV-1 was detected in 32 dogs. Additionally, CaHV-1 was consistently detected in six pleural effusions. Most CaHV-1 infected dogs were over 5 years of age (43.8%) and expressed a mild nasal discharge. Pathological results of four three-month-old puppies, naturally moribund from respiratory disease, revealed a severe multifocal necrotic-hemorrhagic disease in several organs without pathognomonic inclusion bodies. They were only found to be CaHV-1 positive by PCR. Phylogenetic analysis demonstrated concordant results of CaHV-1 circulation in Thailand. Although mostly found as a co-infection with other CIRDC viruses (68.8%) it also occurred alone. Therefore, rapid ante-mortem diagnosis might facilitate the investigation of unclassical CaHV-1 infection, which is fatal in neonates and causes illness in annually core-vaccinated adults.
Examination of published articles with respect to statistical errors in veterinary sciences
Authors: Ercan Ilker , Kaya Mehmet Onur , Uzabaci Ender , Mankir Seray , Can Fatma Ezgi , Bashir Albishir Musa 
Published: March 2017

Abstract
The aim of this present work was to examine statistical errors in published veterinary science articles. A total of 204 published articles (SCI or SCI-Exp) were used in this study. The articles were chosen from among those indexed in PubMed database between the years 2010 and 2014, inclusive. A total of 199 articles had at least one statistical error. The most frequently encountered statistical error among the articles published in journals indexed in SCI and in SCI-E was “errors in summarizing data”. No statistical error was found in 2.45% (n=5) of 204 (SCI: 0.98% (1/102), SCI-E: 3.92% (4/102)) articles. To reduce and prevent statistical errors in publications, the researchers must have a basic knowledge of statistics and during the study process they must consult field experts. While reviewing, the reviewers have to redirect the publications to statistical editors when needed and most importantly during the process of editing, the editors have to direct the publications to a statistics reviewer.
Effects of Aronia melanocarpa juice on plasma and liver phospholipid fatty acid composition in Wistar rats
Authors: Zec Manja , Debeljak Martačić Jasmina , Ranković Slavica , Pokimica Biljana , Tomić Mirko , Ignjatović Đurđica , Glibetić Maria , Popović Tamara 
Published: March 2017

Abstract
A nutritional placebo-controlled study was performed in Wistar rats in order to investigate the effects of 5-weeks aronia juice consumption towards fatty acid (FA) composition of phospholipids in the plasma and liver, as well as plasma glucose (Glu) and cholesterol levels. The animals were divided into 3 groups of 8 animals each, and randomized to receive either the full polyphenol dose of Aronia melanocarpa juice (AMJ), 4 times less polyphenol dose (¼-AMJ) or polyphenol-lacking placebo beverage (PLB). Each group of 8 male adult Wistar rats received the liquid ad libitum. AMJ decreased the levels of low-density lipoprotein (LDL) (P < 0.05) vs. PLB. AMJ increased dihomo-γ-linoleic acid (DGLA, 20:3n-6) (P < 0.05) and decreased arachidonic acid content (AA, 20:4n-6) (P < 0.05) vs. PLB in liver phospholipids. AMJ significantly increased monounsaturated fatty acids (MUFA) levels both in the liver (P < 0.05) and plasma (P < 0.05). Both aronia juice doses elevated the levels of beneficial n-3 polyunsaturated fatty acids (PUFA) in the plasma and liver. There was a dose-dependent, significant increase (P < 0.001) in cis-vaccenic acid (VA, 18:1n-7) in phospholipids in the plasma and liver. Our results indicate favorable effects of aronia juice intake on lipid parameters in Wistar rats. These findings suggest the potential of aronia dietary intake in cardiometabolic diseases primary prevention strategies in the human population.
Translation, Cultural Adjustment and Evaluation of Reliability and Validity of “Quality of Life Enjoyment and Satisfaction Questionnaire – Short Form” for Patients with Schizophrenia
Authors: Petrović-Kitić Aleksandra , Janković Slobodan 
Published: March 2017

Summary
The Quality of Life Enjoyment and Satisfaction Questionnaire – Short Form is the most often used scale for measuring the quality of life of patients with psychiatric diseases. The aim of this research was to analyze the possibilities for measuring the quality of life in clinical conditions on the sample of patients with schizophrenia by using this scale. The study was conducted on the group including 153 patients with schizophrenia at the Institution for Accommodation of Adults “Male Pčelice”, Kragujevac. The study was observational and cross-sectional. The reliability of questionnaire was examined by using Cronbach’s alpha. The two tests of factor analysis adequacy were used, Spherical Bartlett’s Test and Keiser-Meyer-Olkin test (sampling adequacy). Validation was performed by calculating the correlation (validation by criteria). The Quality of Life Enjoyment and Satisfaction Questionnaire – Short Form was reliable (Cronbach’s alpha coefficient was 0.730) and valid. According to Catell criterion two domains were applied. This two-component solution explained the total of 37.80% variance, whereby the contribution of the first domain was 27.1% and the second 10.7%. The Quality of Life Enjoyment and Satisfaction Questionnaire – Short Form is suitable for everyday clinical evaluation of the patients with schizophrenia.
The Relation between Academic Achievement and Emotional Intelligence in Iranian Students: A Meta-Analysis
Authors: Ranjbar Hossein , Khademi Seyed Hossein , Areshtanab Hossein Namdar 
Published: March 2017

Summary
Academic achievement is one of the most important concepts in the field of education. Although emotional intelligence, as a key factor in academic achievement, has been studied in various studies, yet the results obtained are not in harmony with each other and the topic is yet under debate. In order to fill in this informational vacuum, the present research was undergone using a meta-analysis method.
In order to make a thorough search to find articles within the Iranian context, key words such as “Emotional Intelligence” AND (Emotional OR Intelligence) AND “academic achievement” OR “academic status” AND “Student” AND “Iran”, were used without limitation in dates or language in the following sites: Medline, Scopus, ScienceDirect, Web of Knowledge, Ovid, Wiley, Google Scholar, and Persian databases such as SID, Irandoc and Magiran. The random effect model was utilized for statistical pooling.
A total of 23 articles were chosen to enter the meta-analysis. The pooled results showed a meaningful relationship between emotional intelligence and academic achievement (Pooled Correlation = 0.157; 95% CI, 0.081-0.231). The Cochran Q (Q = 145:126, p = 0.000) and I2 = 84.84% index indicated a high heterogeneity among the articles entering the meta-analysis. In subgroup analysis, the students in state universities had more summary effect (0.177; 95% CI, 0.085 - 0.267) compared to the ones studying in private ones (0.118; 95% CI, 0.024-0.255). No sign of publication bias was found.
A weak correlation was seen between emotional intelligence and educational achievement in the context of Iranian university students. It seems that the relationship of these concepts may be affected by other factors in this setting, so this calls for further studies in this field.
Improving the Method of Roof Fall Susceptibility Assessment based on Fuzzy Approach
Authors: Ghasemi Ebrahim , Ataei Mohammad , Shahriar Kourosh 
Published: March 2017

Abstract
Retreat mining is always accompanied by a great amount of accidents and most of them are due to roof fall. Therefore, development of methodologies to evaluate the roof fall susceptibility (RFS) seems essential. Ghasemi et al. (2012) proposed a systematic methodology to assess the roof fall risk during retreat mining based on risk assessment classic approach. The main defect of this method is ignorance of subjective uncertainties due to linguistic input value of some factors, low resolution, fixed weighting, sharp class boundaries, etc. To remove this defection and improve the mentioned method, in this paper, a novel methodology is presented to assess the RFS using fuzzy approach. The application of fuzzy approach provides an effective tool to handle the subjective uncertainties. Furthermore, fuzzy analytical hierarchy process (AHP) is used to structure and prioritize various risk factors and sub-factors during development of this method. This methodology is applied to identify the susceptibility of roof fall occurrence in main panel of Tabas Central Mine (TCM), Iran. The results indicate that this methodology is effective and efficient in assessing RFS.
An Evaluation of Practical Applicability of Multi-Assortment Production Break-Even Analysis based on Mining Companies
Authors: Fuksa Dariusz , Trzaskuś-Żak Beata , Gałaś Zdzisław , Utrata Arkadiusz 
Published: March 2017

Abstract
In the practice of mining companies, the vast majority of them produce more than one product. The analysis of the break-even, which is referred to as CVP (Cost-Volume-Profit) analysis (Wilkinson, 2005; Czopek, 2003) in their case is significantly constricted, given the necessity to include multi-assortment structure in the analysis, which may have more than 20 types of assortments (depending on the grain size) in their offer, as in the case of open-pit mines.
The article presents methods of evaluation of break-even (volume and value) for both a single-assortment production and a multi-assortment production. The complexity of problem of break-even evaluation for multi-assortment production has resulted in formation of many methods, and, simultaneously, various approaches to its analysis, especially differences in accounting fixed costs, which may be either totally accounted for among particular assortments, relating to the whole company or partially accounted for among particular assortments and partially relating to the company, as a whole. The evaluation of the chosen methods of break-even analysis, given the availability of data, was based on two examples of mining companies: an open-pit mine of rock materials and an underground hard coal mine. The selection of methods was set by the available data provided by the companies. The data for the analysis comes from internal documentation of the mines – financial statements, breakdowns and cost calculations.
New Computer Simulation Procedure of Heading Face Mining Process with Transverse Cutting Heads for Roadheader Automation
Authors: Dolipski Marian , Cheluszka Piotr , Sobota Piotr , Remiorz Eryk 
Published: March 2017

Abstract
The key working process carried out by roadheaders is rock mining. For this reason, the mathematical modelling of the mining process is underlying the prediction of a dynamic load on the main components of a roadheader, the prediction of power demand for rock cutting with given properties or the prediction of energy consumption of this process. The theoretical and experimental investigations conducted point out – especially in relation to the technical parameters of roadheaders used these days in underground mining and their operating conditions – that the mathematical models of the process employed to date have many limitations, and in many cases the results obtained using such models deviate largely from the reality. This is due to the fact that certain factors strongly influencing cutting process progress have not been considered at the modelling stage, or have been approached in an oversimplified fashion.
The article presents a new model of a rock cutting process using conical picks of cutting heads of boom-type roadheaders. An important novelty with respect to the models applied to date is, firstly, that the actual shape of cuts has been modelled with such shape resulting from the geometry of the currently used conical picks, and, secondly, variations in the depth of cuts in the cutting path of individual picks have been considered with such variations resulting from the picks’ kinematics during the advancement of transverse cutting heads parallel to the floor surface. The work presents examples of simulation results for mining with a roadheader’s transverse head equipped with 80 conical picks and compares them with the outcomes obtained using the existing model.
Cerebral Vasospasm in Subarachnoid Hemorrhage Through Aneurysm Rupture - Clinical Considerations and Case Report
Authors: Caraban B.M. , Romila Aurelia , Hangan L.T. , Lungu Mihaela 
Published: March 2017

Abstract
Arterial aneurysm ruptures of the circle of Willis determine subarachnoid hemorrhage, which evolving due to the irritating effect of the blood in the subarachnoid space may lead to complications such as large arterial vasospasm in the origin of the large cerebral arteries, from the base of the brain.
Cerebral vasospasm causes a downstream cerebral ischemia, that may lead to the establishment of an ischemic stroke which is life threatening.
Early treatment against the vasospasm with calcium channels blockers should prevent occurrence of ischemia. However, the effectiveness of this treatment is not fully confirmed, fact that was mentioned even in the presentation of our case.
Monopolistic Competition and Exclusive Quality
Authors: Ortiz-Ospina Esteban 
Published: March 2017

Abstract
In this paper I adapt a classic model of monopolistic competition where products are differentiated by quality, in order to study a market in which high-quality products can only be enjoyed by users with sufficient ability. Casting the model in the context of higher education – where selective colleges pledge quality by excluding low-ability students –, I show that there are two equilibrium market segmentations: one in which highly selective colleges serve high-income high-ability students, and another in which highly selective colleges are cheaper than the less selective competitors that cater to low-ability high-income students. I provide an example to illustrate the welfare implications of these two market configurations.
Positive effect of pedometer-based walking intervention on body image and physical activity enjoyment in adolescent girls
Authors: Kantanista Adam , Bronikowski Michał , Laudańska-Krzemińska Ida , Król-Zielińska Magdalena , Osiński Wiesław 
Published: March 2017

SummaryStudy aim: To assess the effects of an eight-week pedometer-based walking intervention, using different strategies of goalsetting, on self-efficacy, physical activity enjoyment, and body image.Material and methods: The study included data from 82 girls, aged 16 to 18 years. The participants took part in the intervention using goal setting with the do your best strategy (do your best group, n = 26) or specific step goals predetermined by the researcher (predetermined goals group, n = 56). The group of participants from the predetermined goals group was divided into a group of those achieving the goals (n = 28) and a group where goals were not achieved (n = 28). Self-efficacy, body image, and physical activity enjoyment were assessed before and after the intervention.Results: The results of ANOVA with repeated measures between the measurement times and groups showed a significant effect of body image (F = 3.60, p = 0.03, η² = 0.08) and physical activity enjoyment (F = 3.10, p = 0.05, η² = 0.07). Participants who achieved goals in step counts predetermined by the researcher had a more positive body image and a higher level of physical activity enjoyment after the intervention.Conclusion: An eight-week pedometer-based walking program implemented in a school setting may improve body image and physical activity enjoyment in adolescent girls only if the set goals (the number of steps) are specific and fully achieved by participants. Using pedometers in conjunction with a goal setting program seems to be an effective motivational way to improve physical activity in female students.