bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of Load Capacity of the Airport Pavement Structure With the Use of the Acn-Pcn Method
Authors: Wesołowski Mariusz , Blacha Krzysztof 
Published: May 2015

Abstract
The structures of the airport pavements are designed for defined operational time, assuming the predicted intensity and structure of the air traffic. The safety of air operations conducted by aircrafts on airport pavements depends mostly on their load capacity and design. Therefore, the load capacity inspections should be performed periodically, as the information about the current operational condition of the airport pavement is the basis for decisions on types of aircrafts allowed for traffic, as well as traffic intensity and dates of renovation or modernization works.
Currently, the load capacity of airport pavements is assessed with the use of the ACN-PCN method, implemented by the ICAO (International Civil Aviation Organization). This article presents the method of determination and description of the PCN index
Metoda Wyboru Systemu Informatycznego Wspierającego Zarządzanie Eksploatacją Wojskowych Statków Powietrznych
Authors: Barszcz Piotr , Zieja Mariusz 
Published: May 2015

Abstract
W pracy przedstawiono metodę doboru systemu informatycznego, którego zadaniem jest wsparcie procesu zarządzania eksploatacją wojskowych statków powietrznych. Zaproponowana metoda bazuje na badaniach ankietowych przeprowadzanych wśród bezpośrednich użytkowników systemów informatycznych eksploatowanych w lotnictwie Sił Zbrojnych RP. Do analizy wyników przeprowadzonych badań wykorzystano metody statystyczne. Pracę zakończono praktycznymi wnioskami dotyczącymi dalszej przydatności poszczególnych systemów informatycznych, np. w procesach wyboru najlepszych rozwiązań oraz integracji systemów informatycznych
Role Modeling: A Precious Heritage in Medical Education / Učenje po modelu: dragoceno nasleđe u medicinskom obrazovanju
Authors: Mirhaghi Amir , Karimi Moonaghi Hossein , Sharafi Simin , Emami Zeydi Amir 
Published: May 2015

Summary
Role modeling is a powerful form of learning and an integral part of medical education. Although role modeling has a longstanding history, it has not received enough attention in medical education. The aim of this study was to present a comprehensive review of the literature to describe dimensions of role modeling in medical education. Review of the literature was undertaken using the international databases with the following search terms or their combinations: “role modeling”, “observational learning” and “medical education” up to September 2014. Relevant articles were retrieved. A total of 39 articles were included in this review. The results showed that clinical excellence, humanistic personality and excellence in teaching composed three essential elements of role modeling. Basic outcomes of role modeling in medical education are humanism and professionalism. In conclusion, role modeling as an outstanding educational approach has been recommended for enhancing humanism and professionalism in medical education.
Exotic trilobites from the uppermost Cambrian Series 3 and lower Furongian of Sweden
Authors: Żylińska Anna , Weidner Thomas , Ahlgren John , Ahlberg Per 
Published: May 2015

Abstract
Seventeen taxa of exotic trilobites representing eight families are described from the olenid- and agnostoid-dominated strata of the uppermost Cambrian Series 3 and lower Furongian alum shale facies of Sweden and from glacial erratic boulders of Denmark. Only five taxa are assigned to species level, i.e., Maladioidella abdita (Salter, 1866), Olentella rara (Westergard, 1922), Pedinocephalus peregrinus (Henningsmoen, 1957), Ptychoparia pusilla (Westergard, 1922), and Westergaardella olenorum (Westergard, 1922), whereas the others are left under open nomenclature or remain unrecognized. Most are described for the first time from the Cambrian of Scandinavia. Their affinities point to a strong connection with East Gondwana, Laurentia, Kazakhstania and Siberia. Exotic trilobites appear in the succession directly after periods of very low oxygen concentration in the Alum Shale Sea; their occurrences correspond to the ranges of agnostoid arthropods in the succession and seem to be linked to global transgressive events causing an influx of cool and/or oxygen-depleted waters onto the shelf of the Baltica palaeocontinent.
Some Aspects Of Greenery Restoration And Maintenance Management Of Woody Plants In Cemeteries In Nitra, Slovakia
Authors: HALAJOVÁ Denisa , KUBIŠTA Richard 
Published: May 2015

Abstract
Greenery of cemeteries creates a substantial part of the public greenery in our towns but often does not subserve greenery functions. The older architectonical burial places where the greenery is diminished on tree-lined communications by reason of spatial limitation represent the most widespread cemetery type of Slovak towns. Existence of woody plants at these conditions is affected by various negative factors which result in vitality decreasing and poor aesthetic standard of woody plants in burial places. The article is focused on evaluation of greenery in the two eldest cemeteries in Nitra town. The obtained data describe complex dendrological analysis, species composition, landscape value and health assessment of woody plants. On base of evaluation results we have proposed the principles of framework methodology for greenery restoration and maintenance management of woody plants in sepulchral places.
Diagnosis Of The Impact Of The Gabčíkovo Water Project On Soil Water Regime In The Surroundings
Authors: JARABICOVÁ Miroslava , PÁSZTOROVÁ Mária , VITKOVÁ Justína , MINARIČ Peter 
Published: May 2015

Abstract
Rye Island is a unique natural formation, which lies between the main flow of the Danube River and the Little Danube River and is the largest river island in Europe. It is located in the southwest of Slovakia and with its mild to slightly warm climate is one of the most fertile agricultural areas in Slovakia. The whole Rye Island is also our greatest reservoir of quality waters used for drinking purposes, where groundwaters of Rye Island are permanently supplied with water from the Danube River. It means that as water levels in the Danube River were unstable before the construction of the Gabčíkovo Water Project, also the groundwater level faced large fluctuations. Changes occurred after putting the Gabčíkovo Water Project into service, with a decrease in groundwater levels. Thereby, the conditions for agriculture have improved and drying of surrounding protected floodplain forests has stopped. Through the present contribution we decided to analyse the impact of Gabčíkovo on soil water regime in the area of Rye Island, and evaluate the course of groundwater level, precipitation and soil water storage over time. For the representative area we chose a forest ecosystem of Král’ovská Lúka and evaluated the period 1999 to 2009.
Atrazine levels in the Jaboticabal water stream (São Paulo State, Brazil) and its toxicological effects on the pacu fish Piaractus mesopotamicus / Razine atrazina u vodotoku Jaboticabal (São Paulo, Brazil) i njihovi toksikološki učinci na ribu Piaractus mesopotamicus
Authors: Santos Edson Aparecido dos , Cruz Claudinei da , Carraschi Silvia Patrícia , Marques Silva José Roberto , Grossi Botelho Rafael , Velini Edivaldo Domingues , Pitelli Robinson Antonio 
Published: May 2015

Abstract
The aim of this study was to determine the environmental concentration of atrazine (ATZ) in five streams located in the north of São Paulo state (Brazil) and evaluate its toxicological impact on young specimens of the pacu fish Piaractus mesopotamicus. Samples of water were collected on three occasions between 2010 and 2011, corresponding to periods signifying the beginning, middle, and end of rain season. ATZ levels were estimated by a high-performance liquid chromatography coupled with a mass spectrometry (HPLC-MS/MS) triple quadrupole. Later, the quotient of environmental risk (QR) was determined based on the medium lethal concentration (LC50 48 h), non-observable effect concentration (NOEC), and the estimated environmental concentration (EEC) of ATZ detected in the environment. Histological changes in gills and liver were also studied, along with the brain activity of the enzyme acetylcholinesterase (AChE). The highest concentration of ATZ measured was 10.4 μg L-1. The ATZ LC50 (48 h) for young P. mesopotamicus was 24.46 mg L-1 and the QR was classified as “safe”. Although the QR indicated that ATZ could be safe for the tested species, it caused many histological alterations in the liver and gills of the exposed specimens, and an increase in the AChE levels.
Measuring and modelling the radiological impact of a phosphogypsum deposition site on the surrounding environment / Mjerenje i modeliranje radiološkog utjecaja odlagališta fosfogipsa na okoliš
Authors: Bituh Tomislav , Petrinec Branko , Skoko Božena , Vučić Zlatko , Marović Gordana 
Published: May 2015

Abstract
Phosphogypsum (PG) is a waste product (residue) from the production of phosphoric acid characterized by technologically enhanced natural radioactivity. Croatia’s largest PG deposition site is situated at the edge of Lonjsko Polje Nature Park, a sensitive ecosystem possibly endangered by PG particles. This field study investigates two aspects relevant for the general radiological impact of PG: risk assessment for the environment and risk assessment for occupationally exposed workers and local inhabitants. Activity concentrations of natural radionuclides (238U, 235U, 232Th, 226Ra, 210Pb, and 40K) were measured in the PG (at the deposition site), soil, and grass samples (in the vicinity of the site). The ERICA Assessment Tool was used to estimate the radiological impact of PG particles on non-human biota of the Lonjsko Polje Nature Park. The average annual effective dose for occupationally exposed workers was 0.4 mSv which was within the worldwide range.
Stress and Fatigue in Operators Under Radiofrequency Electromagnetic Radiation and Shift Work
Authors: Vangelova K. , Velkova D. 
Published: May 2015

Summary
The aim was to study the effect of radiofrequency electromagnetic radiation (EMR) on stress indices, health complaints and fatigue of operators working fast-rotating extended shifts. Working conditions, job content, job control, social support, health complaints and fatigue were followed in 220 operators, 110 exposed to EMR and 110 control operators, matched by age and sex. The EMR was measured and time-weighted average (TWA) was calculated. The excretion rates of stress hormones cortisol, adrenaline and noradrenaline were followed during the extended shifts in 36 operators, working at different levels of exposure and 24-hour exposure was calculated. The exposed group pointed more problems with the working conditions, including EMR, noise, currents and risk of accidents, more health complaints and higher level of fatigue. The most common health complaints were mental and physical exhaustion after work, pains in the chest, musculoskeletal complaints, headache, and apathy. High level EMR exposure (TWAmean = 3.10 μW/cm2, TWAmax = 137.00 μW/cm2) significantly increased the 24-hour excretion of cortisol and noradrenaline, whereas the increase of adrenaline excretion did not reach significance, as well as hormone excretion rates under low level exposure (TWAmean = 1.89 μW/cm2, TWAmax = 5.24 μW/cm2). In conclusion, higher number of health complaints, higher stress hormone excretion rates and fatigue were found in operators under EMR.
Efficiency of Intraligamentary Anesthesia of Inferior Molars for Endodontic Treatment
Authors: Peycheva K. 
Published: May 2015

Summary
The periodontal ligament injection appears to be the most consistently reliable in achieving clinically adequate pulpal anaesthesia. Materials and Methods: 130 inferior molar teeth; technique: The tooth was first cleaned with chlorhexidine 0.2% solution. The penetration of the ligament is performed with special intraligamentary needle (30 G - 9, 17,21 mm) “sliding” along the side of the tooth, 300º angle between the needle and the tooth, having taken the care of determining support points which will prevent the needle from twisting. The penetration must be deep enough to obtain the seal required for the injection, injection for each root in particular points; volume of solution per root is 0.2-0.4 ml. Results: In 125 cases the technique was absolutely efficient. In only 5 cases with pulpitis chronica ulcerosa there was need for additional intrapulpal anesthesia. Conclusions: The method could be used as a primary anesthetic method for endodontic treatment.
Clinical and Experimental Study of Gaalas Phototherapy for Tемрoromandibular Disorders
Authors: Nencheva-Svechtarova S. , Svechtarov V. , Gisbrecht A. , Uzunov Tz. 
Published: May 2015

Summary
The objective of this study was to test the clinical effectiveness of the gallium-aluminum-arsenide laser (GaAlAs; 785 nm) and superluminiscent diodes (633 nm) phototherapy (MedX 1100 device) for the treatment of patients with temporomandibular disorders and myofascial pain syndrome. The results demonstrated a positive effect in pain relief. A significant reduction (p < 0.05) in the level of pain was observed for the temporomandibular joint and for the masseter muscles using paired samples t-test and Wilcoxon signed rank test. The experimental study on pork muscle samples showed that a) the main part of laser radiation is absorbed by the tissue in thin layer of 3-4 mm, b) in the spectral region 650-950 nm the intensity of light penetration is about 0.2-0.25 percent of the initial light intensity.
Crohn’s Disease Ocular Manifestations
Authors: Koev Kr. 
Published: May 2015

Summary
Crohn’s disease is an inflammatory bowel disease which causes inflammation of the digestive tract. Crohn’s disease most frequently affects the ileum and the colon. In the active stage of the disease signs and symptoms may include diarrhea, abdominal pain and cramping, blood in the stools, reduced appetite and weight loss. In patients with severe Crohn’s disease the following signs and symptoms may be observed: fever, fatigue, arthritis, eye inflammation, oral ulcers, skin disorders, inflammation of the liver or bile ducts or delayed growth. Heredity and dysfunctions of the immune system are considered to cause the development of Crohn’s disease. About 10% of people with inflammatory bowel disease have also ocular problems. The most common ocular manifestations of Crohn’s disease are uveitis, iritis, episcleritis, keratopathy, keratoconjunctivitis and retinal vasculitis. Untreated uveitis may cause glaucoma and vision loss. Uveitis and iritis are four times more common in women than in men. In patients in the active stage of the disease, episcleritis also flares. Symptoms of episcleritis include inflammation, bright red spots on the sclera and localized pain. Keratoconjunctivitis in Crohn’s disease is caused by decreased tear production or increased tear film evaporation. Dry eyes can cause itching, burning or infection. Keratopathy usually causes no pain or vision loss, therefore in most cases no treatment is needed. In retinal vasculitis tortuosity of retinal veins, retinal edema at the posterior pole and intraretinal blood near blood vessels are observed. Intravenous fluorescein angiography shows intraretinal neovascularisation and haemorrhage in the posterior pole.
Robust Quasi–LPV Model Reference FTC of a Quadrotor Uav Subject to Actuator Faults
Authors: Rotondo Damiano , Nejjari Fatiha , Puig Vicenç 
Published: May 2015

Abstract
A solution for fault tolerant control (FTC) of a quadrotor unmanned aerial vehicle (UAV) is proposed. It relies on model reference-based control, where a reference model generates the desired trajectory. Depending on the type of reference model used for generating the reference trajectory, and on the assumptions about the availability and uncertainty of fault estimation, different error models are obtained. These error models are suitable for passive FTC, active FTC and hybrid FTC, the latter being able to merge the benefits of active and passive FTC while reducing their respective drawbacks. The controller is generated using results from the robust linear parameter varying (LPV) polytopic framework, where the vector of varying parameters is used to schedule between uncertain linear time invariant (LTI) systems. The design procedure relies on solving a set of linear matrix inequalities (LMIs) in order to achieve regional pole placement and H∞ norm bounding constraints. Simulation results are used to compare the different FTC strategies.
Supervisory Fault Tolerant Control of the GTM UAV Using LPV Methods
Authors: Péni Tamás , Vanek Bálint , Szabó Zoltán , Bokor József 
Published: May 2015

Abstract
A multi-level reconfiguration framework is proposed for fault tolerant control of over-actuated aerial vehicles, where the levels indicate how much authority is given to the reconfiguration task. On the lowest, first level the fault is accommodated by modifying only the actuator/sensor configuration, so the fault remains hidden from the baseline controller. A dynamic reallocation scheme is applied on this level. The allocation mechanism exploits the actuator/sensor redundancy available on the aircraft. When the fault cannot be managed at the actuator/sensor level, the reconfiguration process has access to the baseline controller. Based on the LPV control framework, this is done by introducing fault-specific scheduling parameters. The baseline controller is designed to provide an acceptable performance level along all fault scenarios coded in these scheduling variables. The decision on which reconfiguration level has to be initiated in response to a fault is determined by a supervisor unit. The method is demonstrated on a full six-degrees-of-freedom nonlinear simulation model of the GTM UAV.
Fault Tolerant Control Using Gaussian Processes and Model Predictive Control
Authors: Yang Xiaoke , Maciejowski Jan M. 
Published: May 2015

Abstract
Essential ingredients for fault-tolerant control are the ability to represent system behaviour following the occurrence of a fault, and the ability to exploit this representation for deciding control actions. Gaussian processes seem to be very promising candidates for the first of these, and model predictive control has a proven capability for the second. We therefore propose to use the two together to obtain fault-tolerant control functionality. Our proposal is illustrated by several reasonably realistic examples drawn from flight control.
An SFDI Observer–Based Scheme for a General Aviation Aircraft
Authors: Ariola Marco , Mattei Massimiliano , Notaro Immacolata , Corraro Federico , Sollazzo Adolfo 
Published: May 2015

Abstract
The problem of detecting and isolating sensor faults (sensor fault detection and isolation-SFDI) on a general aviation aircraft, in the presence of external disturbances, is considered. The proposed approach consists of an extended Kalman observer applied to an augmented aircraft plant, where some integrators are added to the output variables subject to faults. The output of the integrators should be ideally zero in the absence of model uncertainties, external disturbances and sensor faults. A threshold-based decision making system is adopted where the residuals are weighted with gains coming from the solution to an optimization problem. The proposed nonlinear observer was tested both numerically on a large database of simulations in the presence of disturbances and model uncertainties and on input-output data recorded during real flights. In this case, the possibility of successfully applying the proposed technique to detect and isolate faults on inertial and air data sensors, modelled as step or ramp signals artificially added to the real measurements, is shown.
Simultaneous State and Parameter Estimation Based Actuator Fault Detection and Diagnosis for an Unmanned Helicopter
Authors: Wu Chong , Qi Juntong , Song Dalei , Qi Xin , Han Jianda 
Published: May 2015

Abstract
Simultaneous state and parameter estimation based actuator fault detection and diagnosis (FDD) for single-rotor unmanned helicopters (UHs) is investigated in this paper. A literature review of actuator FDD for UHs is given firstly. Based on actuator healthy coefficients (AHCs), which are introduced to represent actuator faults, a combined dynamic model is established with the augmented state containing both the flight state and AHCs. Then the actuator fault detection and diagnosis problem is transformed into a general nonlinear estimation one: given control inputs and the measured flight state contaminated by measurement noises, estimate both the flight state and AHCs recursively in each time-step, which is also known as the simultaneous state and parameter estimation problem. The estimated AHCs can further be used for fault tolerant control (FTC). Based on the existing widely used nonlinear estimation methods such as the unscented Kalman filter (UKF) and the extended set-membership filter (ESMF), three kinds of adaptive schemes (KF-UKF, MIT-UKF and MIT-ESMF) are proposed by our team to improve the actuator FDD performance. A comprehensive comparative study on these different estimation methods is given in detail to illustrate their advantages and disadvantages when applied to unmanned helicopter actuator FDD.
Hospitality and the Other: Anglican Schools as Places of Transformative Encounter
Authors: Wilson Tom 
Published: May 2015

Abstract
This article argues that Anglican foundation schools have a positive impact on pupils’ sense of belonging to the wider community by creating safe spaces within which to encounter difference in a positive and transformative manner. The paper is divided into three main sections. First, the context in which the article was written is outlined. Details of the author's two years of fieldwork in a multi cultural Anglican primary school are set out and an understanding of Anglican schools as places which display an authentic outworking of a Christian worldview is explained. Second, the role of Anglican schools as places of encounter is discussed, with reference both to relevant Anglican literature and to the author's own experience of Anglican schools. This includes a substantial discussion of the Anglican understanding of hospitality as the foundation for creating safe spaces for transformative encounters. Hospitality is understood solely in a religious sense, of a Christian school acting as host to those of all faiths and none. Third, the core values of respect, forgiveness and freedom, which support the status of Anglican schools as safe spaces of encounter are elucidated. This involves both examples from the author's fieldwork and also published literature on the topic. Respect is discussed as a foundational value for any encounter with difference, which must be balanced with a willingness to forgive those who react negatively to such encounters. Freedom is understood specifically in the context of freedom of religious belief, reinforcing an understanding that Anglican schools do not engage in proselytising activity. The article concludes by reinforcing the central argument of the paper that Anglican faith schools contribute to a sense of belonging to a wider community through creating safe spaces to encounter the other and taking deliberate steps to engage with that other.