bluuebunny/crossref_metadata_2025_split huggingface dataset:
Risk of inferior vena cava compression syndrome during fetal MRI in the supine position – a retrospective analysis
Authors: Kienzl Daniela , Berger-Kulemann Vanessa , Kasprian Gregor , Brugger Peter C. , Weber Michael , Bettelheim Dieter , Pusch Franz , Prayer Daniela 
Published: November 2013

Abstract

Objectives: Inferior vena cava compression syndrome (VCCS) is a serious complication of supine fetal magnetic resonance imaging (MRI) examinations, particularly during late gestation. This morphologic study correlated the occurrence of VCCS with the grade of inferior vena cava (IVC) compression.

Materials and methods: There were 56 fetal MRI in the supine position [median gestational weeks (GW) 27+4] and 16 fetal MRI in the lateral position (median GW 30+6) retrospectively analyzed. The grade of maternal IVC compression was determined by the maximal anterior-posterior diameter (DAP) at the level of L4/L5. Fetal head position and right-sided uterus volume were analyzed. Clinical VCCS-related symptoms during fetal MRI were assessed.

Results: A noncompressed IVC was present in 1.8% (n=1) and a DAP of 5 to <10 mm in 33.3% (n=19) and 1 to <5 mm in 64.9% (n=36). The DAP was independent of fetal head position (P=0.99) and showed no significant correlation with gestational age (r=0.33). IVC compression increased with right-sided uterus volume (r=–0.328; P=0.014). There was a significant difference in DAP in the lateral position compared with the supine position (P<0.001). Clinical assessment revealed no symptoms of VCCS in any woman.

Conclusions: The presented data support the concept of physiologic compensation for significantly reduced venous backflow in the supine position during the second and third trimesters of pregnancy.
Evaluation of dihydropteridine reductase activities in patients with kidney failure
Authors: Palabıyık Şaziye Sezin , Aşçı Ali , Girgin Gözde , Şahin Gönül , Çetinkaya Ramazan , Baydar Terken 
Published: November 2013

Abstract
End-stage renal disease (ESRD) is the inability of the kidneys to remove waste products from the blood. The most important factors causing ESRD that require hemodialysis are diabetes and hypertension. There are limited numbers of studies to evaluate tetrahydrobiopterin pathway in these patients. The aim of the study was to evaluate tetrahydrobiopterin pathway by measuring its important components, biopterin to creatinine concentrations and dihydropteridine reductase activities in diabetes and hypertension patients treated with/without hemodialysis. The patients undergoing hemodialysis were classified as diabetic nephropathy (n=21), hypertensive nephropathy (n=20) and others (n=30), while the controls consisted of healthy subjects (n=21), diabetic subjects (n=23) and hypertensive subjects (n=22) without any renal disorder. It was found that urinary biopterin to creatinine concentrations significantly increased in kidney failure patients undergoing hemodialysis compared to the healthy control group (p<0.05). Additionally, there were significant differences in urinary biopterin to creatinine concentrations between diabetes or hypertension patients and their hypertensive or diabetic control counterparts (both p<0.05). Our results indicated an alteration in tetrahydrobiopterin pathway in ESRD, and in the presence of secondary pathologies such as diabetes and hypertension in the patients undergoing hemodialysis, more considerable changes are observed in the pathway.
Identification of four common α-thalassemia gene deletions among a group with hemoglobinopathies in Sétif population, Algeria
Authors: Houcher Bakhouche , Öztürk Ayşenur , Begag Samia , Houcher Zahira , Akar Nejat 
Published: November 2013

Abstract
α-Thalassemia (α-thal) is one of the most common genetic disorders in the world. It is characterized by the absence or reduced expression of α-globin genes. This study was carried out to evaluate the allelic frequency of α-thal defects in a patient for the first time in Sétif (Algeria). One hundred and two patients with hemoglobinopathies from Sétif region, Algeria, presenting thalassemia were included in this study. Genomic DNA isolation was carried out according to standard methods. For identifying the α-thal genotype, investigation of α-globin gene deletions (-α3.7, -α4.2, -MED and -α20.5) was performed by using multiplex-polymerase chain reaction (PCR). Among the three deletions found, the most mutations were the -α3.7 (10.78%), followed by the -MED (5.88%) and -α20.5 (0.98%), whereas the -α4.2 deletion was not observed (0.0%). The allele frequency is 0.054 (11/204) for the 3.7 deletion, 0.029 (6/204) for the MED and 0.005 (1/204) for the 20.5. Molecular heterogeneity of mutations is typical of α-thal in Algeria. Our findings will be valuable and essential for the molecular diagnosis and prevention strategies of hemoglobinopathy gene mutations in the Algerian population.
Global Sensitivity Analysis of Multi-State Markov Reliability Models of Power Equipment Approximated by Polynomial Chaos Expansion / Analiza Globalnej Wrażliwości Wielostanowych Modeli Niezawodności Markowa Dla Urządzeń Energetycznych Aproksymowanych Za Pomocą Rozwinięcia W Chaos Wielomianowy
Authors: Rocco Claudio M , Zio Enrico 
Published: November 2013

Abstract
Reliability and availability of electric power system equipment (e.g., generator units, transformers) are often evaluated by defining and solving Markov models. Transition rates among the identified equipment states are estimated from experimental and field data, or expert judgment, with inevitable uncertainty. For model understanding and to guide validation and confidence building, it is of interest to investigate the effects of the uncertainty in the input transition rates on the output reliability and availability. To this aim, Global Sensitivity Analysis (GSA) can be used for defining importance (sensitivity) indexes that allow a ranking of the transition rates with respect to their influence on the uncertainty in the output. In general, GSA requires a large number of model evaluations. In this paper, a metamodel is defined to estimate the performance index of interest (e.g. reliability or availability). The metamodel is built based on polynomial chaos expansion (PCE), a multidimensional polynomial model approximation whose coefficients are determined by evaluating the model in a reduced set of predetermined values of the input. The proposed approach is illustrated on a power generating unit.
Uncertainty Problem in Decision Support System for Means of Transport Maintenance Processes Performance Development / Problem Niepewności W Systemie Wsparcia Decyzyjnego Procesów Utrzymania W Stanie Zdatności Środków Transportu
Authors: Nowakowski Tomasz , Werbińska-Wojciechowska Sylwia 
Published: November 2013

Abstract
In this paper, the authors’ research work is focused on uncertainty analysis implementation in the developed DSS for transportation means’ maintenance processes performance. Thus, in the Introduction section, the transportation means’ maintenance processes issues and the uncertainty problem are described. Later, there is briefly literature overview in the research area discussed. In the next Section, the expert system for means of transport maintenance processes performance is also investigated. Following this, the uncertainty analysis is developed and the examples of expert system implementation are given. The work ends up with summary and directions for further research.
The Use of the Evaluation Method of Software System Architecture to Assess the Impacts on Information Security in Information and Communication Technology Systems / WYKORZYSTANIE METODY OCENY ARCHITEKTURY SYSTEMU INFORMATYCZNEGO DO OCENY SKUTKÓW INCYDENTÓW NA BEZPIECZEŃSTWO INFORMACJI W SYSTEMACH TELEINFORMATYCZNYCH
Authors: Jóźwiak Ireneusz J. , Szleszyński Artur 
Published: November 2013

Abstract
In a paper an application of the architecture evaluation method used for prediction the effects of incidents for information security which is inside of Information and Communication Technology (ICT) system is described. As a base, the ATAM method is taken. During the analysis there is shown, that direct use of the ATAM technique is impossible, because it use only one set of data. Use just one view of ICT system is not adequate for measure the influence of incident on information security, which is inside ICT system. A tool which is useful for assessment effects of incidents, is an incidence matrix that presents logical connections between elements of ICT system. Knowledge of logical connections and structures of the messages being exchanged enables an assessment of operation the elements which receive modified messages.
Ship’s Horizontal Plane Determination by Means of Three Laser Range Sensors in Pilot Navigation and Docking System / WYZNACZENIE POŁOŻENIA UMOWNEJ WODNICY STATKU ZA POMOCĄ TRZECH DALMIERZY LASEROWYCH W PILOTOWYM SYSTEMIE NAWIGACYJNO-DOKUJĄCYM
Authors: Zalewski Paweł 
Published: November 2013

Abstract
Modern ship’s navigation support systems relay mainly on GNSS technology, as prime source of position. The advantages of such solution are obvious and undeniable. On the other hand in critical situations the dependency of the one system presents a great deal of risk. Taking above into consideration the idea of building GNSS independent Pilot Navigation and Docking System (PNDS) was put into practice. PNDS utilizes the range measurements between laser head and ship’s side to determine the ship’s horizontal plane presented on the screen. The study comprises the case in which three networked rangefinders were deployed on the berth side in a line. Such location of sensors causes uncertainty in determining of ship’s outline contour and speed in relation to assigned coordinate reference system. The final algorithm presented in the article, taking into account all underdetermined conditions, has been tested in PNDS system constructed in Maritime University in Szczecin.
The Method of Evaluation of Initial Availability in the Transport System of City Buses / Metoda Oceny Gotowości Początkowej W Systemie Autobusowego Transportu Miejskiego
Authors: Szubartowski Mirosław 
Published: November 2013

Abstract
This paper presents the method of evaluation of initial availability of means of transport to carry out the assigned transport tasks. As an example of research object illustrating the presented deliberations, an actual city bus system from a selected urban agglomeration was used. In systems of this type, the technological objects (means of transport) have to initiate carrying out of the assigned transport tasks at assigned times, according to the adopted timetable. In order to assure the possibility to fulfill the transport tasks at assigned times, the so called time buffer is implemented in order for the necessary service processes to be carried out. In order to evaluate the availability of means of transport in the operational cycle of which the so called time buffer was implemented, it is convenient to use the characteristics describing initial availability of technological objects. Initial availability determines the probability of initiating (activating) the necessary number of technological objects in order to carry out the assigned tasks over a designated time period needed for their preparation and activation. The presented deliberation is illustrated by examples of the results of evaluation of initial availability in the actual tested transport system.
Managing DO-178 Compliance with IBM Rational Platform / Zarządzanie Zgodnością Z DO-178 Przy Użyciu Platformy IBM Rational
Authors: Çakmak Mehmet Kerim 
Published: November 2013

Abstract
DO178 is a standard for avionic software for the aerospace industry which can be used as a guidance to determine if the software product will perform reliability in airborne environment. The standard has 5 different certification levels each of which has a certain set of objectives. The certification levels are determined depending on how critical the system or subsystem is. To address DO- 178 objectives, companies need a defined systems and software engineering process that can delineate workflows, inputs, outputs, roles and responsibilities.
The major objectives outlined in the DO-178 standard include;
- Requirements engineering
- Design and development.
- Validation and verification
- Engineering tasks, such as configuration and change management
In this presentation, we will try to explain the main principles of the DO178 standard very briefly and try to give an insight about how the objectives of this standard can be satisfied.
Safety of Machinery – Determination of Performance Level / Bezpieczeństwo Maszyn – Wyznaczanie Poziomu Zapewnienia Bezpieczeństwa
Authors: Kasprzyczak Leszek 
Published: November 2013

Abstract
The article presents a method for determining the performance level (PL) on the basis of the PN-EN ISO 13849-1 standard, which is harmonized with the machinery directive 2006/42/EC. The risk assessment and risk reduction criteria, according to PN-EN ISO 12100, were briefly characterized. The focus was put on determining the required performance level PLr on the basis of a risk graph. The method was presented how to use a safety function composed of input-, logicaland execution subsystems. It was demonstrated how to determine the achieved PL for a safety function composed of hardware elements on the basis of a safety category, mean time to dangerous failures (MTTFd), diagnostic coverage (DC), and immunity to common cause failures (CCF).
Assessment of the Impact of Human on Safety of Transportation Systems Operation / Ocena Wpływu Oddziaływań Człowieka Na Bezpieczeństwo Działania Systemu Transportowego
Authors: Woropay Maciej , Muślewski Łukasz , Ślęzak Marek , Szubartowski Mirosław 
Published: November 2013

Abstract
Collisions are inseparably connected with road traffic. Driving a mechanical vehicle requires not only a good knowledge of traffic rules and appropriate skills but also physical and psychical fitness. The road system consists of three basic elements such as: road, vehicle and human. From the point of view of safety of the executed transport process this is the human who plays the most important role in it. They need to have the ability of quick situation estimation and providing proper response to it involving performance of right maneuvers and adjusting them to a given situation. Studying transportation systems it should be remembered that the role of a human plays in them is of different character. They may be drivers, passengers or belong to the environment. Thus, their behavior has a large influence on the transportation system safe functioning including both public and individual transport.
Emergency Water Supply of Rzeszow / Kryzysowe Zaopatrzenie Rzeszowa W Wodę
Authors: Rak Janusz R. , Piegdoń Izabela , Homa Karolina 
Published: November 2013

Abstract
In this study the methodology of balancing water needs in a crisis situation was presented. The example was done for city of Rzeszow. The municipal infrastructure: water supply system, sewage system, gas network, heating and energy systems was shortly characterized. The research undertaken in this study was related to Systemic Crisis Management and protection of the inhabitants of the city. The balance of emergency water supply Rzeszow in drinking water for the 29 neighborhoods of the city was shown.
Serum-based protein biomarkers for detection of lung cancer
Authors: Bhatnagar Shilpa , Katare Deepshikha , Jain Swatantra 
Published: November 2013

AbstractLung cancer is one of the most common cancers in terms of both incidence and mortality.The major reasons for the increasing number of deaths from lung cancer are late detection and lack of effective therapies. To improve our understanding of lung cancer biology, there is urgent need for blood-based, non-invasive molecular tests to assist in its detection in a cost-effective manner at an early stage when curative interventions are still possible. Recent advances in proteomic technology have provided extensive, high throughput analytical tools for identification, characterization and functional studies of proteomes. Changes in protein expression patterns in response to stimuli can serve as indicators or biomarkers of biological and pathological processes as well as physiological and pharmacological responses to drug treatment, thus aiding in early diagnosis and prognosis of disease. However, only a few biomarkers have been approved by the FDA to date for screening and diagnostic purposes. This review provides a brief overview of currently available proteomic techniques, their applications and limitations and the current state of knowledge about important serum biomarkers in lung cancer and their potential value as prognostic and diagnostic tools.
Systemic lupus erythematosus followed by myasthenia gravis: a rare association
Authors: Sîrbu Elena , Milaş Oana , Petrica Maxim , Petrica Ligia 
Published: November 2013

Abstract
Systemic lupus erythematosus (SLE) and myasthenia gravis (MG) are autoimmune diseases, their association in the same patient being rarely described. Here, we report a case of SLE in a 19-year-old girl who within 2 years of the diagnosis of SLE developed MG, and underwent thymectomy for a benign thymoma immediately thereafter.
Utilization of a comparison of curvatures for land surface segmentation
Authors: Burian Libor , Minár Jozef 
Published: November 2013

Abstract
Utilization of a new geomorphometric variable for land surface segmentation — the angle of absolute curvatures — is a main goal of the paper. The angle of absolute curvatures is defined as the difference between the orientation of maximal curvature (field independent) and the orientation of the greater of the profile or the tangential curvature. Land-forms separated by three types of borders (A, B, C) can be delimited from the field of angles of absolute curvatures. Borders of A type are connected with a local extreme of slope. Borders of B and C type are connected with a change to the priority of either profile or tangential curvature, as shown in computation, respectively. Fields of altitude, slope, profile curvature, tangential curvature and rotor curvature are reflected by an algorithm. Distinct borders in the field of the angles of absolute curvatures are connected with a sudden change of value and with zero isolines in the previously mentioned fields. Spatially closed entities generated by this proposed algorithm are considered to be a variant of the elementary forms of the land surface. The quality of information generated by this algorithm depends on the size of the grid mesh of the input digital elevation model. The algorithm in its current state is suitable for locating the borders of some elementary forms in the first stage of geomorphology mapping.
Discrete Transportation System’s Availability Problem in Case of Critical Situation Sets
Authors: Mazurkiewicz Jacek , Walkowiak Tomasz 
Published: November 2013

Abstract
The paper discusses the discrete transportation system’s (DTS) availability problem in case of the critical situation, which happens during its ordinary work. The formal model of the transportation system suitable for modelling based on the system behaviour observation is proposed. Monte Carlo approach is in use for a simulation. The system’s availability is calculated as global metric to find if the system is able to realise the loaded set of tasks. The critical situation discussed there is caused by reliability, as well as by functional and human reasons. No restriction on the system’s topology and on a kind of distribution describing the system’s functional and reliability parameters is the main advantage of the approach. The proposed solution seems to be essential for the owner and administrator of the transportation systems.
Relocation of Resources in a Hierarchically Managed Transportation System Under Critical Conditions
Authors: Caban Dariusz , Walkowiak Tomasz 
Published: November 2013

Abstract
Critical state of operation is reached by a system when it is exposed to an unexpected coincidence of faults (such as periodic rapid increase of the service demand, unavailability of a significant proportion of vehicle operators, simultaneous breakdown of all or a large part of the vehicle fleet). This leads to complete disruption of the transportation system, which persists even after the faults are removed. The duration of critical state of operation is defined as the time needed to resume normal operation after such an incident. It is shown that this time can be predicted using the simulation tools. Furthermore, a contingency plan is proposed, based on relocation of some resources between independent parts of a hierarchically organized transportation system. This contingency plan is analysed to determine the optimal percentage of resources to be relocated and the duration of this relocation.
Le Château-Trompette de Bordeaux et son décor architectural
Authors: March Alexander 
Published: November 2013

Rebuilt between 1653 and the mid 1680's under the successive direction of d'Argencourt, Poupart, Clerville and Vau- ban, the Château-Trompette at Bordeaux was given an exceptionally rieh décorative treatment : Claude Perrault described it as a « jewel ».
Architectural analysis shows that the moldings of the bastions and the curtains, and the double-ramp staircases, were probably unique in classical fortification, while the ornamentation of the three main gâtes and the barracks was carried out with particu- lar care.
The nature of the design begs the question of the factors what led to such décoration, which was essentially due to Louis Nicolas de Clerville, « commissaire général des fortifications », and his master of the works, Nicolas Desjardins. We shall there- fore examine the relationship between the two men and the link between military and civil architecture.
A Replay Approach for Remote Testing User Experience of Mobile Bursty Data Application
Authors: Chen Lei , Wang Ping , Liu Fuqiang , Wang Chao , Zhou Haibo , Pu Lijun , Xiong Jiping , Van Nguyen Ngoc 
Published: November 2013

â??The Bursty data applications become popular in
mobile networks, and the quality of end user experience of
these applications is vital for mobile telecom operators.
Mobile telecom operators and equipment providers begin to
design new scheduling strategies aiming at improving
quality of user experience. These scheduling strategies can
identify particular applications and assign corresponding
scheme to them. But traditional test approaches only
consider the common performance indicators, so they
cannot evaluate the new scheduling strategies. This paper
proposes an approach of replaying user behaviors to
evaluate the communication system. The approach uses user
behavior model to build test scenarios, and evaluate the
performance of each application via corresponding
particular indicators. Finally, a remote test system is built,
and the experiment on this system proves the effectiveness
of this approach
Dynamic Analysis of Test Frame of Railway Subgrade Dynamic Response Test System
Authors: Liangcai Zeng , Zheng Feilong , Zhang Anyu , Kai Gangsheng 
Published: November 2013

In this paper, we take the railway subgrade
dynamic response test system as the study object, the
laboratory test reaction frameâ??s model factors were
analyzed through the finite element analysis software
MSC.Patran/Nastran. The former six-order original
frequencies and vibration modes of the frame were
caculated and evaluated in detail. Then we studied its
transient response under two working conditions: when itâ??s
fully loaded and suddenly unloaded, and the deformation
displacement curves of the key points of the frame were
obtained. These results provide a basis for the detailed study
to the mechanical behavior of the frame and setting the
proper working frequencies of the hydraulic servo
excitation cylinder to avoid the resonance.