bluuebunny/crossref_metadata_2025 huggingface dataset:
Energy planning under uncertain decision-making environment: An evidential reasoning approach to prioritize renewable energy sources
Authors: Sellak Hamza , Ouhbi Brahim , Frikh Bouchra
Published: February 2017

Nowadays, making strategic decisions in a sensitive sector such as energy planning that usually requiresallocating huge funds, time, and resources is a difficult task. For instance, prioritizing a set of Renewable EnergySources (RES) is a complex multi-dimensional task that typically involves a range of conflicting criteria featuringdifferent forms of evaluation data in an uncertain decision-making environment. This process is aligned withseveral sources that can be uncertain, including imprecise information, limited domain knowledge from decisionmakers,and failures to provide accurate judgments from experts. In this study, we propose to use the EvidentialReasoning (ER) approach to manage the expanding complexities and uncertainties in RES prioritization problem.The ER approach is employed as a multiple criteria framework to assess the appropriateness regarding the use ofdifferent renewable energy technologies. A case study is provided to illustrate the implementation process. Resultsshow that using the ER approach when assessing the sustainability of different RES under uncertainty allowsproviding robust decisions, which brings out a more accurate, effective, and better-informed decision-making toolto conduct the evaluation process.
Mining Users Mobility at Public Transportation
Authors: Ferreira Joao
Published: February 2017

In this research work we propose a new approach to estimate the number of passengers in a public transportation and determinate the users’ route path based on a passive approach without user intervention. The method is based on the probe requests of users mobile device through the collected data in wireless access point. This data is manipulated to extract the information about the numbers of users with mobile devices and track their route path and time. This data can be manipulated to extract useful knowledge related with users’ habits at public transportation and extract user mobility patterns.
A Knowledge Representation and Reasoning System for Multimodal Neuroimaging Studies
Authors: Coelho Ana , Marques Paulo , Magalhães Ricardo , Sousa Nuno , Neves José , Alves Victor
Published: February 2017

Multimodal neuroimaging analyses are of major interest for both research and clinical practice, enabling the combined evaluation of the structure and function of the human brain. These analyses generate large volumes of data and consequently increase the amount of possibly useful information. Indeed, BrainArchive was developed in order to organize, maintain and share this complex array of neuroimaging data. It stores all the information available for each participant/patient, being dynamic by nature. Notably, the application of reasoning systems to this multimodal data has the potential to provide tools for the identification of undiagnosed diseases. As a matter of fact, in this work we explore how Artificial Intelligence techniques for decision support work, namely Case-Based Reasoning (CBR) that may be used to achieve such endeavour. Particularly, it is proposed a reasoning system that uses the information stored in BrainArchive as past knowledge for the identification of individuals that are at risk of contracting some brain disease.
Levi’s Problem for Pseudoconvex Homogeneous Manifolds
Authors: Gilligan Bruce
Published: February 2017

Suppose G is a connected complex Lie group and H is a closed complex subgroup. Then there exists a closed complex subgroup J of G containing H such that the fibration π:G/H ⟶ G/J is the holomorphic reduction of G/H; i.e., G/J is holomorphically separable and O(G/H)≅ π*O(G/J). In this paper we prove that if G/H is pseudoconvex, i.e., if G/H admits a continuous plurisubharmonic exhaustion function, then G/J is Stein and J/H has no non-constant holomorphic functions.
Generalized Torsion Elements and Bi-orderability of 3-manifold Groups
Authors: Motegi Kimihiko , Teragaito Masakazu
Published: February 2017

It is known that a bi-orderable group has no generalized torsion element, but the converse does not hold in general. We conjecture that the converse holds for the fundamental groups of 3-manifolds and verify the conjecture for non-hyperbolic, geometric 3-manifolds. We also confirm the conjecture for some infinite families of closed hyperbolic 3-manifolds. In the course of the proof, we prove that each standard generator of the Fibonacci group F(2,m) (m > 2) is a generalized torsion element.
La comunicación viral a través de los medios sociales: análisis de sus antecedentes
Authors: Sarmiento Guede José Ramón , De Esteban Curiel Javier , Antonovica Arta
Published: February 2017

El artículo describe la evolución que ha tenido la comunicación de boca en boca hasta el marketing viral e identifica las emociones, los influencials, el contenido, la ejecución y los medios como antecedentes que influyen en la viralidad del mensaje de marca a través de los medios sociales. Metodología: Análisis de regresión lineal para explicar la relación entre una variable con las demás y estimar el comportamiento de una variable en función de lo que se conoce de otras variables que influyen en el comportamiento de la variable. Análisis y conclusiones: El artículo señala que las emociones y los influencials influyen significativamente en la viralidad del mensaje, y que es la variable ejecución la que menos influye. Se recomienda a las organizaciones  desarrollar relaciones con los usuarios a través de los medios sociales y co-crear el mensaje de marca, porque de esta manera tendrá mayor difusión y confiabilidad por parte de los usuarios.
Динамика косых произведений отображений интервала
Authors: Efremova Lyudmila Sergeevna
Published: February 2017

Работа относится к тому направлению изучения динамических систем класса косых произведений, которое тесно связано с достижениями одномерной динамики. В ней дан обзор основных результатов по динамике косых произведений отображений интервала, полученных в течение последних десятилетий. Статья содержит новые результаты о структуре неблуждающего множества и центра $C^1$-гладких косых произведений отображений интервала, представляющих собой эндоморфизмы со сложной динамикой фактора. Эти результаты применяются к описанию пространства такого рода косых произведений. Библиография: 125 названий.
Education in Neurology Resident Documentation Using Payroll Simulation
Authors: Liang John W. , Shanker Vicki L.
Published: February 2017

Background

Approaches for teaching neurology documentation include didactic lectures, workshops, and face-to-face meetings. Few studies have assessed their effectiveness.

Objective

To improve the quality of neurology resident documentation through payroll simulation.

Methods

A documentation checklist was created based on Medicaid and Medicare evaluation and management (E/M) guidelines. In the preintervention phase, neurology follow-up clinic charts were reviewed over a 16-week period by evaluators blinded to the notes' authors. Current E/M level, ideal E/M level, and financial loss were calculated by the evaluators. Ideal E/M level was defined as the highest billable level based on the documented problems, alongside a supporting history and examination. We implemented an educational intervention that consisted of a 1-hour didactic lecture, followed by e-mail feedback “paystubs” every 2 weeks detailing the number of patients seen, income generated, income loss, and areas for improvement. Follow-up charts were assessed in a similar fashion over a 16-week postintervention period.

Results

Ten of 11 residents (91%) participated. Of 214 charts that were reviewed preintervention, 114 (53%) had insufficient documentation to support the ideal E/M level, leading to a financial loss of 24% ($5,800). Inadequate documentation was seen in all 3 components: history (47%), examination (27%), and medical decision making (37%). Underdocumentation did not differ across residency years. Postintervention, underdocumentation was reduced to 14% of 273 visits (P < .001), with a reduction in the financial loss to 6% ($1,880).

Conclusions

Improved documentation and increased potential reimbursement was attained following a didactic lecture and a 16-week period in which individual, specific feedback to neurology residents was provided.
Using the Entrustable Professional Activities Framework in the Assessment of Procedural Skills
Authors: Pugh Debra , Cavalcanti Rodrigo B. , Halman Samantha , Ma Irene W. Y. , Mylopoulos Maria , Shanks David , Stroud Lynfa
Published: February 2017

Background

The entrustable professional activity (EPA) framework has been identified as a useful approach to assessment in competency-based education. To apply an EPA framework for assessment, essential skills necessary for entrustment to occur must first be identified.

Objective

Using an EPA framework, our study sought to (1) define the essential skills required for entrustment for 7 bedside procedures expected of graduates of Canadian internal medicine (IM) residency programs, and (2) develop rubrics for the assessment of these procedural skills.

Methods

An initial list of essential skills was defined for each procedural EPA by focus groups of experts at 4 academic centers using the nominal group technique. These lists were subsequently vetted by representatives from all Canadian IM training programs through a web-based survey. Consensus (more than 80% agreement) about inclusion of each item was sought using a modified Delphi exercise. Qualitative survey data were analyzed using a framework approach to inform final assessment rubrics for each procedure.

Results

Initial lists of essential skills for procedural EPAs ranged from 10 to 24 items. A total of 111 experts completed the national survey. After 2 iterations, consensus was reached on all items. Following qualitative analysis, final rubrics were created, which included 6 to 10 items per procedure.

Conclusions

These EPA-based assessment rubrics represent a national consensus by Canadian IM clinician educators. They provide a practical guide for the assessment of procedural skills in a competency-based education model, and a robust foundation for future research on their implementation and evaluation.
Crisis Communication of Local Authorities in Emergency Situations – Communicating “May Floods” in the Republic of Serbia
Authors: Kešetović Želimir , Marić Predrag , Ninković Vladimir
Published: February 2017

In May 2014 Serbia and the region of Southeast Europe were hit by the heaviest rain in 120 years of recorded weather measurements, which caused catastrophic floods and landslides. Nine cities and thirty one municipalities declared the state of emergency on their territory. The paper analyses crisis communications of city and municipal emergency management headquarters with different target groups, their relations with the media and the “high politics”, as well as the “lessons learned” which may be applied to new emergency situations. We observed crisis communication on both operative (functionality of the equipment, issuing orders and instructions to citizens etc), and on symbolic level (the shaping of meaning of the event and of the subjects’ actions). A particular attention was paid to the communication problems such as insufficiently trained communicators, inadequate equipment, limited time and excessive expectations, as well as to the analysis of the media reporting that was often politicized and sensationalist.
Ewolucyjna transformacja czasopisma. Część 3
Authors: Kokowski Michał ,   Instytut Historii Nauki imienia Ludwika i Aleksandra Birkenmajerów Polskiej Akademii Nauk (Warszawa – Kraków, Polska)
Published: February 2017

It is outlined the third phase of the development of the journal Prace Komisji Historii Nauki PAU (Proceedings of the PAU Commission on the History of Science). In June 2016 Prace Komisji Historii Nauki PAU 2015, vol. XIV was issued. Following the legal decision with effect from 4 July 2016 the journal, while maintaining the continuity of its publication, has been renamed to Studia Historiae Scientiarum. Since June 2016 the journal has a new website with an editorial panel on the Scientific Journals Portal. At the same time it still uses the existing website on the PAU Portal. In November 2016 Studia Historiae Scientiarum 2016, vol. 15 was issued.
Physics at the University of Lviv since the 17th century until the second world war: Addenda to the bibliography
Authors: Rovenchak Andrij , Kiktyeva Olena ,   Department for Theoretical Physics, Ivan Franko National University of Lviv,   Department for Theoretical Physics, Ivan Franko National University of Lviv
Published: February 2017

Previously, an attempt was made to compile in a series of papers a complete bibliography of works related to physics at the University of Lviv. The period since the foundation of the University in 1661 until the division of the Chair of Physics in 1872 was discussed by Rovenchak (2014). Special attention was paid to the development of theoretical physics, starting from the first professor, Oskar Fabian (Rovenchak 2009), followed by the famous physicist Marian Smoluchowski (Rovenchak 2012), and finally the Interbellum (Rovenchak 2013). The history of astronomy at the University of Lviv, albeit without a special bibliographic section, is presented by Novosyadlyj (2011) and Apunevych et al. (2011). The development of the experimental physics since 1872 still awaits a detailed study. The present paper will provide some additions to this bibliography: firstly with the descriptions of several missing early works from the 17th and 18th century and then, with a presentation of the activity of Wojciech Urbański. It is followed by a couple of works by Oskar Fabian and Marian Smoluchowski. Finally, minor complements to the bibliographic lists from the 1930s will be made, including popular newspaper articles. We strive to present the bibliographic description as completely as possible, in particular by avoiding abbreviations in names and titles, so that readers can extract any information of their interest. All items were examined de visu except for those marked with an asterisk (*) after the number. Przedstawione materiały, dotyczące fizyki na Uniwersytecie Lwowskim na przestrzeni wieków od XVII do XX, będą przydatne dla dalszych badań historii fizyki i bibliografii nauk przyrodniczych w Europie Środkowej i Wschodniej.
Odpowiedź na list Dr. Pawła E. Tomaszewskiego na temat badań życiorysu Jana Czochralskiego
Authors: Kokowski Michał
Published: February 2017

Autor udziela odpowiedzi na list Pana dr. Pawła E. Tomaszewskiego, będącego kolejnym (trzecim) etapem polemiki na temat faktów z życia Jana Czochralskiego i różnic w sposobie ich przedstawiania przez amatora i profesjonalnego historyka. Źródłem kontrowersji jest biografia pt. Powrót. Rzecz o Janie Czochralskim (2012), edycja angielska: Jan Czochralski restored (2013).Zdaniem Autora, profesjonalny historyk nauki może mieć pewne zastrzeżenia wobec czasami zbyt popularnego stylu publikacji dr. Tomaszewskiego. Nie ulega jedna żadnej wątpliwości, że jak dotąd to właśnie ten Amator [tj. miłośnik, entuzjasta] badań historycznych dokonał znacznie więcej na polu badań biografii i dokonań Jana Czochralskiego niż profesjonalni historycy i historycy nauki.Odpowiedź ta kończy polemikę.
Poza centrum: nauki w Europie Środkowo-Wschodniej i ich historie Rozmowę z Profesorem Michaelem Gordinem przeprowadził Jan Surman
Authors: Gordin Michael , Surman Jan
Published: February 2017

Co wyróżnia nauki w Europie Środkowo-Wschodniej? Z jakimi problemami konfrontują się historycy nauki piszący o tym regionie? Czy nauka ta różni się od nauki uprawianej w centrach i w jakim zakresie? Jak bardzo imperialna jest nauka reprezentantów nacji dominujących i niedominujących? To tylko niektóre tematy poruszone w rozmowie z Michaelem Gordinem z Princeton University, jednym z wiodących historyków nauki.
Synchronous Ossiculoplasty with Ossicular Replacement Prosthesis during Canal Wall Down Mastoidectomy for Advanced Cholesteatoma: Anatomical and Audiological Outcomes
Authors: Verma Deepak , Shareef Mohamed , Motwani Gul , Malik Noor Ul Din , Choudhary Santosha Ram
Published: February 2017

Objectives

To evaluate the anatomical and audiological outcomes of synchronous ossiculoplasty with ossicular replacement prosthesis during canal wall down mastoidectomy for advanced cholesteatoma.

Methods

The prospective study was done at a tertiary referral institute included 30 patients of cholesteatoma who underwent canal wall down mastoidectomy. Ossicular reconstruction was performed using polytetrafluoroethylene (PTFE) (teflon) partial or total ossicular replacement prosthesis. Patients were assessed at 1st, 3rd and 6th postoperative months for graft uptake and hearing evaluation using pure tone audiometry (PTA) in which air bone gap (ABG) closure and mean ABG was calculated and compared with the mean preoperative ABG.

Results

The mean ABG [both total occicular replacement prosthesis (TORP) and partial occicular replacement prosthesis (PORP) groups combined] considerably reduced from 34.33 ± 4.10 dB preoperatively to 15.47 ± 7.65 dB postoperatively at 6 months. There was a 46.29% of closure of ABG in 1st month, which closed more (53.89%) in 3rd month and even more (55.34%) in 6th postoperative month. p < 0.001 showed the ABG closure ratio and reduction in the mean ABG was statistically significant in the postoperative period.

Conclusion

Ossicular reconstruction with ossicular replacement prosthesis offers good functional results when performed during canal wall down surgery for advanced cholesteatoma, as a single-stage procedure.

How to cite this article

Shareef M, Motwani G, Verma D, Malik NUD, Choudhary SR. Synchronous Ossiculoplasty with Ossicular Replacement Prosthesis during Canal Wall Down Mastoidectomy for Advanced Cholesteatoma: Anatomical and Audiological Outcomes. Int J Otorhinolaryngol Clin 2015;7(3):109-113.
Management of Traumatic Perforations of the Tympanic Membrane: A Clinical Study
Authors: Saimanohar S , Gadag Raveendra P , Subramaniam Vijayalakshmi
Published: February 2017

Objective

To compare the outcome of conservative management vs surgical intervention (realignment of torn edges) in traumatic perforations of the tympanic membrane (TM).

Design

Cohort study, Interventional, Observational, Prospective.

Setting

Karnataka Institute of Medical Sciences, Hubli, Karnataka.

Patients

All patients attending the Department of Otolaryngology with otological injuries.

Interventions

Patients with isolated traumatic tympanic membrane perforations without evidence of temporal bone fractures were managed either conservatively or surgically by realigning the torn edges of perforation under local anesthesia and supporting with gelfoam.

Main outcome measures

Healing of perforation, duration taken for complete healing and hearing outcome by pure tone audiometry.

Results

Perforations in patients taken up for surgical intervention healed faster. Though the difference in outcome, i.e. healed TM perforation between the 2 groups was not statistically significant, the difference in duration taken for healing was observed to be statistically significant (p < 0.05).

Conclusion

Minimal surgical intervention involving realignment of torn edges of perforation and supporting with gelfoam enables faster healing.

How to cite this article

Saimanohar S, Gadag RP, Subramaniam V. Management of Traumatic Perforations of the Tympanic Membrane: A Clinical Study. Int J Otorhinolaryngol Clin 2015;7(3):114-116.
Cartilage Palisade Type 1 Tympanoplasty: Anatomical and Audiological Outcomes
Authors: Verma Deepak , Lade Himani , Malik Noor Ul Din
Published: February 2017

Objectives

To evaluate the anatomical (an intact tympanic membrane without atelectasis or lateralization) and audiological outcomes of type 1 cartilage palisade tympanoplasty.

Methods

The prospective study was done at a tertiary referral institute included 30 patients with mucosal type chronic otitis media requiring type 1 tympanoplasty including subtotal or total perforations and revision cases. The tympanic membrane reconstruction was done using full thickness broad cartilage palisades harvested from the tragus or concha with attached perichondrium laterally. Patients were assessed at 1st, 3rd and 6th postoperative months for assessment of graft uptake, healing of tympanic membrane and hearing evaluation using pure tone audiometry.

Results

Total 27 out of 30 patients had fully epithelized completely healed grafts postoperatively at 1 month (success rate of 90%) while three patients had small defect. One out of these three patients showed complete healing of graft while remaining two had persistent defect at 3rd and 6th months postoperatively. The mean pure tone air bone gap considerably reduced from 33.27 ± 4.29 dB preoperatively to 12.67 ± 5.68 dB postoperatively at 6 months.

Conclusion

Tympanic membrane reconstruction using full thickness palisades of cartilage provides good anatomical and audiological results with significant improvement of hearing specially in cases of subtotal or total perforations, revision surgery, atelectasis and Eustachian tube disorders where healing of tympanic membrane has much poorer prognosis irrespective of the surgical technique used.

How to cite this article

Gupta S, Lade H, Verma D, Malik NUD. Cartilage Palisade Type 1 Tympanoplasty: Anatomical and Audiological Outcomes. Int J Otorhinolaryngol Clin 2015;7(3):117-120.
Comparison of Two Protocols for Management of Placenta Accreta at a Tertiary Care Center in Pakistan
Authors: Izhar Rubina , Husain Samia , Tahir Suhaima , Husain Sonia
Published: February 2017

Objectives

To evaluate the morbidity of placenta accreta when managed by two different protocols.

Materials and methods

All women with placenta accreta coming to Abbasi Shaheed Hospital were included and divided in two groups. Group I included all women with accreta who were managed by lower segment transverse incision in the year 2013. Group II included all women whose accreta was dealt with classical incision in the year 2014. Morbidity from placenta accreta in all these cases was assessed.

Results

A total of 4220 deliveries took place during study. Placenta accrete was diagnosed in 24 cases (incidence = 0.0056%). Mean age of patients in group II was 28.58 ± 3.28 years and in group I was 29.75 ± 2.18 years. Blood products were received by 9(75%) patients in group I, and by 1(8.33%) in group II (p = 0.002). Intensive care unit admissions in group I were 75% and 25% in group II (p = 0.014). Renal sequelae occurred in 7 women in group I (58.3%) whereas none were observed in group II (p = 0.002). The mean duration of hospital stay was 9.83 ± 2.95 days in group I and 2.75 ± 1.215 days in group II.

Conclusion

Prevention of massive hemorrhage is the key factor in reducing maternal morbidity in placenta accreta cases.

Clinical significance

Dealing with accreta via midline incision in low resource settings leads to reduced morbidity.

How to cite this article

Izhar R, Husain S, Tahir S, Husain S. Comparison of Two Protocols for Management of Placenta Accreta at a Tertiary Care Center in Pakistan. J South Asian Feder Obst Gynae 2017;9(1):18-24.
Three-dimensional data assimilation for ionospheric reference scenarios
Authors: Gerzen Tatjana , Wilken Volker , Minkwitz David , Hoque Mainul M. , Schlüter Stefan
Published: February 2017

Abstract. The reliable estimation of ionospheric refraction effects is an important topic in the GNSS (Global Navigation Satellite Systems) positioning and navigation domain, especially in safety-of-life applications. This paper describes a three-dimensional ionosphere reconstruction approach that combines three data sources with an ionospheric background model: space- and ground-based total electron content (TEC) measurements and ionosonde observations. First the background model is adjusted by F2 layer characteristics, obtained from space-based ionospheric radio occultation (IRO) profiles and ionosonde data, and secondly the final electron density distribution is estimated by an algebraic reconstruction technique.The method described is validated by TEC measurements of independent ground-based GNSS stations, space-based TEC from the Jason 1 and 2 satellites, and ionosonde observations. A significant improvement is achieved by the data assimilation, with a decrease in the residual errors by up to 98 % compared to the initial guess of the background. Furthermore, the results underpin the capability of space-based measurements to overcome data gaps in reconstruction areas where less GNSS ground-station infrastructure exists.
The Relationship between Tropical Cyclone Activity, Nutrient Loading, and Algal Blooms over the Great Barrier Reef
Authors: Parker Chelsea L. , Lynch Amanda H. , Spera Stephanie A. , Spangler Keith R.
Published: February 2017

Abstract. The Great Barrier Reef, the world’s largest coral reef ecosystem, is subject to many environmental stressors. This study utilizes remotely sensed Moderate Resolution Imaging Spectroradiometer (MODIS) chlorophyll a concentration data to explore statistically significant relationships between local-scale tropical cyclone disturbance and relative water quality between 2004–2014. The study reveals that tropical cyclone activity reduces water quality at 8- and 16-day time lags. Relationships suggest that at early stages (during and just after cyclone activity) algal response is induced primarily through wind-driven sediment re-suspension. However, wind speed in isolation only increases minimum levels of chlorophyll a, rather than mean or extreme upper values. At greater time lags (16-day), it is suggested that nutrient runoff from rainfall (and perhaps storm surge) increase phytoplankton activity, leading to detrimental ecological effects. The analyses systematically demonstrate the dominance of tropical cyclone size on mean and extreme values of chlorophyll a during and after tropical cyclone activity (at 0-, 8-, and 16-day time lags). Both the total area affected and the area from which nutrients can be extracted have more impact on chlorophyll a concentrations than either the duration or intensity of the cyclone. Findings indicate that efforts to reduce nutrient and sediment leaching into the reef lagoon from the Queensland coastal lands need to be continued and improved. This will be particularly important in the context of climate change, since tropical cyclone frequency, dynamics and characteristics are likely to change.
A Comparison of the Discrete Cosine and Wavelet Transforms for
Hydrologic Model Input Data Reduction
Authors: Wright Ashley , Walker Jeffrey P. , Robertson David E. , Pauwels Valentijn R. N.
Published: February 2017

Abstract. The treatment of input data uncertainty in hydrologic models is of crucial importance in the analysis, diagnosis and detection of model structural errors. Model input data reduction techniques decrease the dimensionality of input data, thus allowing modern parameter estimation algorithms to more efficiently estimate errors associated with input uncertainty and model structure. The Discrete Cosine Transform (DCT) and Discrete Wavelet Transform (DWT) are used to reduce the dimensionality of rainfall time series observations from the 438 catchments in the MOdel Parameter Estimation eXperiment (MOPEX) data set. The rainfall time signals are then reconstructed and compared to the measured hyetographs using standard simulation performance summary metrics and descriptive statistics as well as peak discharge errors. The results convincingly demonstrate that the DWT is superior to the DCT and best preserves and characterizes the observed rainfall data records. It is recommended that the DWT be used for model input data reduction in hydrology in preference over the DCT.
Method and application of using unmanned aerial vehicle for emergency investigation of
single geo-hazard
Authors: Huang Haifeng , Long Jingjing , Yi Wu , Yi Qinglin , Zhang Guodong , Lei Bangjun
Published: February 2017

Abstract. In recent years, the unmanned aerial vehicle (UAV) began to be widely used in the emergency investigation of major natural hazards in a large area, but less for the single geo-hazard. Based on a number of successful practices in the Three Gorges Reservoir Area, China, a complete UAV-based emergency investigation method of single geo-hazard is concluded. Firstly, a customized UAV system consisting of multi-rotor UAV subsystem, aerial photography subsystem, ground control subsystem and ground surveillance subsystem is described in detail. Then, the implementation process which includes four steps, i.e., indoor preparation, site investigation, site fast processing and applying, and indoor comprehensive processing and applying is elaborated, and two investigation schemes including automatic and manual in the site investigation step are put forward. Moreover, some key techniques and methods, e.g., the ground controls points (GCPs) layout and measurement, the route planning, the flight and shooting process control, and the Structure from Motion (SfM) photogrammetry processing are explained. Finally, three applications are given. Practice shows that, using the UAV for emergency survey of single geo-hazard can not only greatly reduce the time, strength and risks of the on-site work, but also provide high-accuracy, high-definition valuable information to well support the emergency treatment.
3D Shear layer simulation model for the mutual interaction of wind
turbine wakes: Description and first assessment
Authors: Trabucchi Davide , Vollmer Lukas , Kühn Martin
Published: February 2017

Abstract. The number of turbines installed in offshore wind farms has strongly increased in the last years and at the same time the need for more precise estimation of the wind farm efficiency. In this sense, the interaction between wakes has become a relevant aspect for the definition of a wind farm layout, for the assessment of its annual energy yield and for the evaluation of wind turbine fatigue loads. For this reason, accurate models for multiple wakes are a main concern of the wind energy community. Existing engineering models can only simulate single wakes which are superimposed when they are interacting in a wind farm. This method is a practical solution, but it is not fully supported by a physical background. The limitation to single wakes is given by the assumption that the wake is axisymmetric. As alternative, we propose a new shear layer model which is based on the existing engineering wake models, but is extended to simulate also non-axisymmetric wakes. In this paper, we present the theoretical background of the model and two application cases. First, we proved that for axisymmetric wakes the new model is equivalent to a commonly used engineering model. Then, we evaluated the improvements of the new model for the simulation of multiple wakes using large eddy simulations as reference. In particular, we report the improvements of the new model in comparison to a sum-of-squares superposition approach for the simulation of three interacting wakes. The remarkable lower deviation from the reference in terms of rotor equivalent wind speed considering two and three interacting wakes encourages the further development of the model, and promises a successful application for the simulation of wind farms.
Estudios de los factores de riesgos asociados a una biblioteca especializada en el Estado Lara, Venezuela
Authors: Montilla Peña Leomar , Pérez Reyes Guillermo Andrés
Published: February 2017

Se presentan los resultados de un estudio sobre los factores de riesgo asociados a una biblioteca especializada en el Estado Lara, Venezuela. El objetivo de esta investigación fue analizar los factores de riesgo que puedan representar fuentes de peligro en todos los elementos de esta organización de información. La investigación es tipo descriptivo, de campo y cuasi experimental. Se realizó la identificación de los factores de riesgo y la cuantificación del riesgo se realizó por la probabilidad (frecuencia) y la intensidad (gravedad) con que se pueden producir los efectos dañinos. Los resultados indican que 25 de los 32 factores de riesgo analizados se pueden relacionar con el elemento de fuentes de información, de la misma manera también pueden relacionarse 12 de los 32 factores de riesgo con el elemento talento humano, 12 de los 32 factores de riesgo con el elemento usuario, 12 de los 32 factores de riesgo con el elemento edificación y 10 de los 32 factores de riesgo con el elemento equipos. Las conclusiones del estudio demuestran que los factores de riesgo que requieren mayor atención y prioridad, son: humedad relativa (valor de riesgo 45), polvo (valor de riesgo 45) y limpieza técnica preventiva (valor de riesgo 15).
Cadena documental y cadena bibliotecológica: front, middle y back office
Authors: Mardones Leiva Marjorie Andrea
Published: February 2017

Este documento establece una relación entre el back office de una unidad de información (Vicente y Oyarce, 2010) y su ciclo documental (Juncà y Martínez, 2009). A partir de esta relación se propone un modelo donde front office, middle office y back office se materializan en el ciclo bibliotecológico, de gestión y documental, permitiendo comprender claramente el objetivo de bibliotecas y centros documentales. Todo ello en pos de establecer las fases que son comunes a toda unidad de información, especialmente para quien se inicia en el estudio de las ciencias de la información y de la documentación.
Avaliação do comportamento informacional de usuários da página com açucar, com afeto do Facebook
Authors: Santana Celio Andrade , Lima Steffane Ramires , Dias Tatianna Lacerda , Silva Chriz Taine
Published: February 2017

Esta pesquisa apresenta a avaliação do comportamento informacional dos usuários da página do Facebook “Com açúcar, com afeto”. que adota como tema central a música popular brasileira (MPB). A interação entre os usuários ocorre a partir de postagens na rede social. Para identificar o comportamento informacional dos usuários foram avaliados um total de 120 postagens e suas “curtidas”, os compartilhamentos e comentários. Também foram realizadas entrevistas com 15 usuários para capturar informações sobre as necessidades de informação da página. A coleta de dados foi baseada no método qualitativo netnografia para capturar os dados disponíveis na página e entrevista para coletar informações complementares. Os dados foram analisados de forma qualitativa tomado como base o modelo de comportamento informacional desenvolvido por Tom Wilson. Os resultados sugerem que os usuários da página a procuram para satisfazer necessidades informacionais cognitivas e psicológicas, desencadeadas a partir de músicas o que é potencializado pelo caráter de grupo (rede) encontrado no ambiente.
Servicios bibliotecarios para dispositivos móviles: El caso de las bibliotecas vinculadas al Consejo Nacional para Asuntos Bibliotecarios de las Instituciones de Educación Superior de México
Authors: Ortega Martínez Eugenia de los Ángeles
Published: February 2017

Objetivo: Analizar cuáles son los servicios bibliotecarios y las aplicaciones (apps) que se están utilizando dentro de las bibliotecas académicas de las Instituciones de Educación Superior adscritas al Consejo Nacional para Asuntos Bibliotecarios de las Instituciones de Educación Superior (CONPAB-IES, A. C.) de México. Método: Se realizó una revisión de la literatura en bases de datos y revistas especializadas en Bibliotecología y Ciencias de la Información con ayuda de los recursos digitales de la Dirección General de Bibliotecas de la Universidad Nacional Autónoma de México. Resultados y conclusiones: El desarrollo de apps y servicios bibliotecarios dispositivos móviles en bibliotecas académicas de las Instituciones de Educación Superior, adscritas al CONPAB-IES, A. C., muestra una tendencia por el desarrollo de colecciones digitales en formatos amigables para PC y laptop, a diferencia de smartphones y tablets.
El mercado laboral en bibliotecología y documentación: análisis de las ofertas de empleo publicadas en la lista de interés BIBGRA durante el periodo 2008-2014
Authors: Artaza Carlos Hugo
Published: February 2017

Con el objeto de analizar las características que presenta el mercado de trabajo en bibliotecología y documentación en la Argentina, se realizó un estudio de las ofertas laborales destinadas a bibliotecarios y licenciados en bibliotecología. Para ello se analizaron las propuestas de trabajo publicadas en la lista de interés BIBGRA durante el periodo 2008-2014. En la investigación se examinaron el número de empleos propuestos, la tipología de las organizaciones demandantes, los requisitos solicitados y la modalidad de los contratos. Se concluye que la mayor demanda de empleos proviene de organizaciones bibliotecarias. En su mayoría las organizaciones pertenecen al ámbito público. El tipo de contrato predominante es de carácter permanente. Con respecto a los conocimientos solicitados, las áreas de Tecnología de la Información, Organización y Tratamiento de la Información, Recursos y Servicios de Información e Idiomas figuran entre los más requeridos por los empleadores.
La enseñanza de la Publicidad a través de la guía docente: el caso de la asignatura Teoría General de la Publicidad
Authors: Gómez Nieto Begoña , Tapia Frade Alejandro
Published: February 2017

La publicidad en la sociedad actual ocupa un lugar clave, debido al motor económico que representa en las sociedades capitalistas. Esta disciplina tiene su merecido lugar en las universidades españolas y a través de sus planes de estudio se pretende formar profesionales cualificados para el desarrollo de la actividad. Una de las asignaturas clave, sobre todo en los primeros cursos, es Teoría General de la Publicidad, donde el alumno toma un primer contacto con la disciplina, de ahí la enorme importancia que tiene para este tipo de estudios. La llegada del Espacio Europeo de Educación Superior (EEES) a la universidad española supuso un replanteamiento en la impartición de las asignaturas desde el punto de vista metodológico. Docente y alumno tienen como camino la guía docente que se presenta al inicio del curso. Esta investigación analiza las guías docentes de la asignatura Teoría General de la Publicidad en las universidades españolas, utilizando como metodología el análisis de contenido. El análisis se limita únicamente a la información publicada en la web de las universidades sobre la guía docente de la asignatura mencionada. Así, se elaboró una plantilla compuesta por 85 variables que detallan el contenido expuesto sobre la asignatura. Los resultados ponen de manifiesto la inapropiada construcción de la guía docente de esta asignatura clave para la enseñanza de la Publicidad y las Relaciones Públicas.
Estrategias y modalidades de argumentación oral en las asambleas de Educación Infantil. Un estudio multicaso
Authors: Mérida Serrano Rosario , González Alfaya Elena , Olivares García María Ángeles
Published: February 2017

Este artículo analiza la importancia de la argumentación como estrategia eficaz para la manifestación de los intereses infantiles. Se enmarca en una línea de investigación más amplia de construcción compartida del conocimiento en la metodología de los Proyectos de Trabajo (en adelante, PT) en Educación Infantil. En este trabajo, mediante una metodología observacional, se graban las intervenciones orales de los niños y las maestras de seis aulas del tercer nivel de Educación Infantil mientras participan en las asambleas iniciales donde han de elegir el tema sobre el que realizarán su proyecto. Se contrastan y complementan los datos recogidos en las grabaciones con las notas de campo de los diarios de investigación y entrevistas realizadas a las maestras. Los resultados apuntan a que los niños a esta edad, de cinco a seis años, utilizan tres modalidades conversacionales: (1) Yuxtapuesta; (2) Interactiva; y (3) Consensuada. Los niños utilizan diversas estrategias argumentativas para fundamentar sus opiniones. Los recursos didácticos empleados por las docentes tienen una incidencia en la participación y calidad argumentativa de los discentes.
Detección de dificultades comunicativo-lingüísticas en la Educación Secundaria Obligatoria de niños/as nacidos prematuros con un peso menor a 1501 gramos
Authors: Coronado Marín Alfonso , Sáenz-Rico de Santiago Belén , Omeñaca Teres Félix , Díaz González Celia
Published: February 2017

Esta investigación pretende contribuir al conocimiento del perfil educativo en cuanto al rendimiento e identificar nuevas morbilidades en la etapa escolar de los recién nacidos prematuros menores de 1501 gramos nacidos en el año 2000 en el Hospital Universitario La Paz de Madrid. Para ello, desde un abordaje interdisciplinar, realizamos un estudio cuasi experimental, prospectivo y de corte transversal, con una muestra de 44 participantes. Se evaluó el lenguaje mediante la prueba BLOC-SR obteniéndose unos resultados que muestran un perfil comunicativo-lingüístico bajo, además de una tasa de repetición de curso del 36%. Los datos muestran correlaciones positivas entre variables biomédicas, como peso al nacimiento, edad gestacional, talla o APGAR y variables psicoeducativas. Concluimos que los participantes en nuestro estudio muestran mayor tendencia a presentar dificultades en el área comunicativo-lingüística a esta edad cronológica. Paralelamente se ha encontrado influencia de factores biomédicos en el lenguaje, configurándolo como una de las nuevas morbilidades relacionadas con la prematuridad.
Determinantes de la satisfacción de los profesores de secundaria, como indicador de calidad de un programa formativo en resolución de conflictos
Authors: Torrecilla Sánchez Eva María , Rodríguez Conde María José , Olmos Miguelañez Susana , Torrijos Fincias Patricia
Published: February 2017

La investigación pretende analizar los factores que condicionan la satisfacción hacia un programa en "Resolución de Conflictos", en modalidad presencial y online, dirigido a futuros docentes de Educación Secundaria, en el curso 2011-2012. Se sigue un método mixto, metodología cualitativa y cuantitativa, apoyada la primera en un grupo de discusión, para el estudio de la relación entre dimensiones resultantes de su puesta en práctica y, la segunda, en una escala de satisfacción tipo likert mediante el estudio de la regresión de las dimensiones de la escala, ambos instrumentos son elaborados ad hoc e implementados al finalizar el programa. Los resultados obtenidos, con el programa NVIVO v.6 y GHEPI en el análisis de contenido, y SPSS v.20 en los análisis estadísticos, relevan altos niveles de satisfacción hacia el programa, a la vez que, determinan como factores condicionantes de la satisfacción elementos internos del mismo, sobresaliendo el desarrollo profesional y personal. Los datos permiten concluir la réplica del programa en otros contextos variando organización y docentes.
Aprendizaje-Servicio: una práctica pedagógica que promueve la participación del estudiantado para la mejora escolar y social
Authors: Mayor Paredes Domingo , Rodríguez Martínez Dolores
Published: February 2017

Este trabajo presenta los resultados de una investigación  donde se analiza cómo se concibe y materializa la participación del alumnado en las prácticas educativas de Aprendizaje-Servicio. El estudio tomó como eje de indagación un aula de primaria de un centro público, donde participaron: alumnado y maestra, alumnado y profesora de la universidad y una representante de una entidad social. Para ello se utilizó el estudio de caso como metodología de investigación y la observación participante, entrevistas semiestructuradas y análisis de documentos como instrumentos de recogida de información. Los hallazgos encontrados permiten constatar que las acciones de Aprendizaje-Servicio, a diferencia de las prácticas tradicionales donde al alumnado se le asigna un rol más pasivo, promueven la participación compartida, favoreciendo un rol protagónico, tanto del alumnado como del profesorado, en el devenir de la misma. A partir de los resultados alcanzados se concluye que el Aprendizaje-Servicio abre nuevos horizontes  para la articulación de prácticas innovadoras que contemplan la voz de los menores como un elemento de mejora de la educación escolar y social. Todo ello se somete a discusión y se señalan nuevas perspectivas de investigación.
Factores explicativos del aprendizaje de la comprensión oral en lengua inglesa en educación secundaria: comparación entre España y Holanda
Authors: González Villarón María , Egido Gálvez Inmaculada
Published: February 2017

Partiendo de la relevancia que en el momento actual tiene el aprendizaje de lenguas extranjeras, este artículo presenta un análisis estadístico de los datos que proporciona la primera edición del Estudio Europeo de la Competencia Lingüística (EECL) (European Commission, 2012a) para España y Holanda en la destreza de comprensión oral en inglés. A partir de dicho análisis, se pretende arrojar luz sobre dos cuestiones principales: por un lado, la descripción del rendimiento del alumnado de ambos países en comprensión oral en lengua inglesa al finalizar la etapa de Educación Secundaria Obligatoria. Por otro lado, se trata de profundizar en los posibles factores explicativos del rendimiento en esta destreza en lengua inglesa en los dos contextos, analizando la influencia que sobre la misma muestran determinadas variables de carácter individual, familiar y escolar. El propósito final de este análisis es enunciar, a la luz de las conclusiones extraídas, una serie de propuestas encaminadas a la reflexión y mejora de la enseñanza y el aprendizaje de las lenguas extranjeras en España y, en concreto, de la habilidad de comprensión oral. El artículo concluye con la necesidad de comprender cómo algunos factores ajenos al sistema educativo determinan, en cierta medida, el éxito de las distintas iniciativas puestas en marcha en el campo de la enseñanza de las lenguas extranjeras. En este sentido, el análisis del EECL subraya la incidencia de factores de diversa índole en el proceso de aprendizaje de una lengua extranjera.
Factores explicativos de la deserción de estudiantes de pedagogía
Authors: Vergara Morales Jorge Ricardo , Boj del Val Eva , Barriga Omar A. , Díaz Larenas Claudio
Published: February 2017

El objetivo del artículo es identificar los factores que influyen en la deserción de estudiantes de pedagogía, considerando sus características individuales y académicas. El estudio se realizó con 531 estudiantes de la cohorte 2009. La investigación es de tipo cuantitativo, con un diseño explicativo, longitudinal y no experimental. La información se recolectó a partir de datos secundarios, los cuales fueron analizados según el método de análisis de supervivencia, modelados a través de la regresión de riesgos proporcionales de Cox. Los resultados demostraron que las variables individuales que explican la deserción de los estudiantes corresponden al sexo y la procedencia de la región del Bio Bio. Por otro lado, las variables académicas que explican la deserción universitaria corresponden al promedio de notas de enseñanza media, el lugar en la lista de seleccionados, provenir de un establecimiento secundario científico-humanista, el total de asignaturas inscritas, el último promedio curricular y la suspensión de estudios. Se concluye que las capacidades asociadas al nivel de logro de los resultados académicos y la gestión de apoyo social para los estudiantes, se constituyen en aspectos significativos para mantener el compromiso por permanecer en el programa académico. En la medida que las capacidades y la gestión de apoyo sean positivas, los estudiantes contarán con interacciones favorables que apoyarán su participación a nivel institucional, lo cual favorecerá su desarrollo intelectual y académico. Finalmente, se concluye que a nivel de política institucional resulta relevante gestionar el apoyo de las capacidades y la adaptación de los estudiantes, ya que se contribuirá en la generación de un equilibrio positivo entre la integración académica y social, a partir de la configuración de elementos que apoyarán el desarrollo de un contexto de motivación que permitirá mantener el compromiso de los estudiantes por el logro de la meta de graduación.