bluuebunny/crossref_metadata_2025_split huggingface dataset:
Correlations Between Severity of Coronary Calcification and Impairment of Left Ventricular Ejection Fraction
Authors: Zsuzsanna Suciu , Theodora Benedek , Beáta Jakó , I Benedek 
Published: March 2014

Abstract Introduction: 64 multislice CT angiography is a recently introduced imaging technique, increasingly being used as a tool to show the coronary arteries in three-dimensional visualization. One of the advantages of this method is the ability to estimate the degree of calcification of atheromatous plaques via coronary calcium score calculation, which correlates with the severity score of ateromatous systemic burden. The aim of this study was to evaluate the relationship between the severity of coronary calcification, expressed by calcium score, and the left ventricular ejection fraction (LVEF). Material and methods: This retrospective study included 81 patients with symptoms of angina and ECG modifications (at rest or during exercise). Echocardiography and 64 multislice CT angiography were performed in all patients to assess the LVEF and Ca scoring. Results: Calcium score was lower than 100 in 62 patients (50.22%), between 100 and 400 in 11 patients (8.91%), and higher than 400 in 8 patients (6.48%). Mean LVEF was 53.52%, 17 patients having an LVEF of less than 50%. In patients with calcium score less than 100, the corresponding ejection fraction was normal: 55.29%, while in coronary arteries with extensive calcifications (calcium score > 400), the LVEF was significantly lower, 50.5% (p = 0.004). Conclusions: High Calcium score is positively correlated with LVEF reduction, and a high value for calcium score indicates an increased probability of reduced left ventricular ejection fraction
Evaluation of Anthropometric and Biochemical Status in Children with Nutritional Deficiency
Authors: Lidia Man , Maria Pitea Ana , Ioana Chinceșan Mihaela , A Man , Oana Mărginean , Despina Baghiu Maria 
Published: March 2014

Abstract Objective: To evaluate the anthropometric and biochemical status of children with nutritional deficiency. Methods: We have conducted a prospective study on 226 children admitted in Pediatric Clinic I, divided into two groups: one group of 49 children with nutritional deficiency (body-mass-index < -2SD) and one control group (177 children). We have followed demographic data, anthropometric indices evaluated as standard deviations (weight, height, middle upper-arm circumference, tricipital skinfold), biochemical proteic status (Insulin-like Growth Factor 1 IGF-1, albumin, total proteins). We also followed parameters of general nutritional biochemistry. Results: The mean age for underweight children was 5.8 years, lower than in the control group. The weight of the nutritional-deficient group was significantly lower than in the control group, unlike the height (p <0.001). We have also found significant differences in body-mass-index, middle upper-arm circumference and tricipital skinfold, all of them with low SDs in children with nutritional deficiency. Regarding the biochemical markers, we have found significantly higher values of transaminases (p <0.001) and lower IGF-1 (p = 0.02) and total proteins (p = 0.013) in nutritional-deficient group. Most IGF-1 values were in normal range in both groups, but with a higher percent of low values in nutritional deficient children (37.5% vs 14.2%, p = 0.0046). There were no significant differences in height, albumin, cholesterol, triglyceride and glucose levels between the two groups. Conclusions: The anthropometric measurements are the most precise methods in evaluating the nutritional status. Among the studied biochemical markers, IGF-1, total proteins and transaminases are correlated with nutritional deficiencies
Metallic paint appearance measurement and rendering
Authors: Mih´alik Andrej , Ďurikovič Roman 
Published: March 2014

Abstract
Humans recognize objects visually on the basis of material composition as well as shape. To acquire a certain level of photorealism, it is necessary to analyze, how the materials scatter the incident light. The key quantity for expressing the directional optical effect of materials on the incident radiance is the bidirectional reflectance distribution function (BRDF). Our work is devoted to the BRDF measurements, in order to render the synthetic images, mostly of the metallic paints. We measured the spectral reflectance off multiple paint samples then used the measured data to fit the analytical BRDF model, in order to acquire its parameters. In this paper we describe the methodology of the image synthesis from measured data. Materials such as the metallic paints exhibit a sparkling effect caused by the metallic particles scattered within the paint volume. Our analysis of sparkling effect is based on the processing of the multiple photographs. Results of analysis and the measurements were incorporated into the rendering process of car paint
Improvements in the turbo-engine by replacement of conventional combustion chamber by a pulse combustion chamber
Authors: Łapinski Damian , Piechna Janusz 
Published: March 2014

Abstract
This paper comprises description of the turbo engine and evaluation of its analytical model. The analytical model was created to establish a benchmark for further evaluation of a wave rotor combustor (at constant volume). The wave rotor combustor concept was presented and discussed. Advantages of combustion at constant volume were described as well as the basic turbo engine updates required to reflect pulse combustor application. The calculation results for analytical model of a basic engine, and that equipped with pulse combustor are included in this paper. The paper describes the required changes in the engine structure and construction and the estimated thermodynamic improvements. Axial-type pulse multi-chamber combustion unit increasing the pressure and temperature of gases requires a special additional turbine utilizing additional energy and forming the interface between the standard compressor-turbine unit. Performance calculations done for an existing GTD-350 engine showed that constant-volume combustion process is valuable
Simulation of fluid structure interaction in a novel design of high pressure axial piston hydraulic pump
Authors: Osiecki Leszek , Patrosz Piotr , Landvogt Bettina , Piechna Janusz , Zawistowski Tomasz , Zylinski Bartek 
Published: March 2014

Abstract
A novel type of an axial, piston-driven high pressure hydraulic pump with variable capacity marks a significant improvement in the area of the hydraulic machinery design. Total discharge from hydrostatic forces eliminates a need for a servomechanism, thus simplifying operation, reducing weight and introducing the possibility of the pump displacement control by computer. PWK-type pumps, invented in the Gdansk University of Technology, offer high efficiency for pressure levels up to 55 MPa, ability to work self sucking even at high speed. However, the heart of the new invention, the commutation unit, creates harmful pressure peaks. Those peaks can be mitigated by the introduction of a compensation chamber with elastic walls. Owing to the dynamic character of events taking place in the pump, a need for computer simulation arouse in order to understand phenomena leading to the occurrence of pressure peaks and choose compensation chamber parameters accordingly. A CFD package alone would not be sufficient to reliably represent the interaction between the compensation chamber wall and the working fluid. This paper presents Fluid Structure Interaction approach comparing 3 different models: 2 simplified models of the pump and a full pump model.
Modelling of vertical shaft of mixed-flow pump
Authors: Holka Henryk , Jarzyna Tomasz 
Published: March 2014

Abstract
The aim of the work was modelling of shaft and calculation of natural vibration frequencies and critical rotations of a large-size, vertical mixed flow pump of total length l=4866 mm. Equations of motion were determined analytically, and then calculation results were verified by numerical modelling. The difficulty of the problem consisted in the shaft bearing, in which four hydrodynamic bearings of unknown parameters were applied. A four-mass beam supported on flexible supports of rigidity k and damping c was assumed as the discrete model of the shaft. Equations of motion for the system were derived with the method of forces. In order to verify correctness of the derived equations, one considered three models of the beam with different support configuration: the beam supported on rigid supports, the beam supported on elastic supports, and the beam supported on flexible supports of rigidity k and damping c. Calculation results are presented in tables and graphs
Selected aspects of robin heart robot control
Authors: Niewola Adam , Podsedkowski Leszek , Wróblewski Piotr , Zawiasa Piotr , Zawierucha Marcin 
Published: March 2014

Abstract
The issues of medical robots have been approached for 12 years in the Institute of Machine Tools and Production Engineering of the Technical University of Lodz. In the last two years, the scope of research related to the miniaturization of surgical tools, automated changing of these tools with the use of a tool depot designed for this purpose, equipping the robot in the sense of touch and developing the software which provides ergonomic and intuitive robot control with the use of all its functions. In the telemanipulator control, strong emphasis is placed on the intuitiveness of control, which is hard to be ensured due to the fact that the robot tool is observed by a laparoscopic camera, whose orientation and position may vary. That is the reason for developing a new algorithm. It copies the increments of the position and orientation measured in relation to the monitor coordinate system onto the robot tool movement and orientation, which are measured in relation to the camera coordinates system. In this algorithm it is necessary to solve inverse kinematics, which has a discontinuity. Avoiding the discontinuity is achieved by mapping the solution with the cosine function. It causes smooth pass through the area of discontinuity in this way avoiding the singularity
Zones and segments as taxa used in the hierarchical classification of riverine landscapes: a case study of the smrečianka brook, Slovak Republic
Authors: Tomčíková Ivana 
Published: March 2014

Abstract
A river is a highly complex structure and the constituent of landscape and catchment basin from which it drains water. In the holistic concept, a river is defined in mutual interactions with its surroundings as a spatial system - the riverine landscape. As a product of fluvial processes, the riverine landscape has a regular spatial hierarchical structure, which is determined by the structure of its morphology, substrate, biota, land cover and socioeconomic structures. The aim of this paper is to verify the river landscape hierarchical classification and to identify the so-called higher taxa - zones and segments in the Smrečianka valley. The main data sources were hydrological maps at 1:50 000, topographic maps at 1:10 000 and 1:25 000, GIS database levels, geological maps at 1:50 000, and the boundaries were specified by a field survey
Capabilities for Handling Complex Substance abuse Problems and its Relationship to the Treatment System: Using the DDCAT Instrument to Explore Local Treatment Systems in Finland
Authors: Tammi Tuukka , Stenius Kerstin 
Published: March 2014

Background Mental health problems in Finland have been the responsibility of the health care, and substance abuse problems have been handled within social care. In 2009, a national reform aiming at integrating mental health and substance abuse treatment systems (SATS) was launched. The critics of integration were concerned that it implies a medicalization and a narrowing of the social care goals. Aim This article analyses to what extent integration of mental health and SATS affect the capability to treat co-occurring substance abuse and mental health problems. A secondary aim is to assess the utility of the DDCAT (Dual Diagnosis Capability in Addiction Treatment) instrument in a Finnish context. Data The study is based on group interviews, using DDCAT, in six Finnish municipalities, three with integrated and three with separate mental health care and SATS. The assessment pertains to the main outpatient unit in the city. Results The dual diagnosis treatment capability did not depend on the system-level integration. Two municipalities where SATS was administratively separate from mental health care were able to achieve high dual diagnosis capability ratings while in one municipality with system level integration this capability was not very high. The DDCAT instrument puts an emphasis on medical staff and competence. Conclusions Strong, separate local SATS may adapt to the integration demands or needs by strengthening their psychiatric competence. This solution can result in treatment that is equally competent in treating mental health and substance abuse problems as integrated systems. The DDCAT instrument can be useful in a Finnish context to measure medical competence to handle dual diagnoses, irrespective of system solutions. For a balanced measurement, the instrument should be complemented with a section mapping competence to handle co-occurring social problems.
Mothers’ perception of stress involved in parenting a diabetic child
Authors: Nwaokoro Joakin Chidozie , Dozie Simplicious IN , Amadi Nkwa A , Emerole Chima O , Ibe Sally NO , Trapani Josef , Nwaokoro Ann Amaka 
Published: March 2014

Objective: This study investigated mother’s perception of stress involved in parenting a diabetic child. Methods: Guided by a descriptive study, a target population which consisted of Maltese mothers with children having insulin-dependent diabetes that attended the outpatient diabetes clinic in St. Luke’s Hospital was surveyed. Well structured self-administered questionnaires were used in collecting data. Parental stress index (PSI) subscales vis-à-vis parental distress (PD), parent-child dysfunctional interaction (P-CDI) and diffi cult child (DC) were the yardsticks that were used to measure mother’s perception of stress involved in parenting a diabetic child. Generated data were subjected to descriptive statistics and correlation and regression analysis with regression line charts. Results: Results showed that mothers who had diabetic children were highly stressed with 19 out of 25 mothers scoring over 85th percentile in the parental stress index. It was also found that PSI subscales had the following trend in increasing order of stress on the mothers; P-CDI<DC<PD. This implied that PD had the greatest impact followed by DC and lastly P-CDI. Conclusion: It was therefore surmised that mothers with diabetic children perceive and experience a lot of stress as a result of having a diabetic child. Hence, it was recommended that further study should be carried out on father’s perception of stress involved in parenting a diabetic child. Asian Journal of Medical Science, Volume-5(3) 2014: 99-104 http://dx.doi.org/10.3126/ajms.v5i3.8910
Tissue-Specific Gene Expression and Regulation in Liver and Muscle following Chronic Corticosteroid Administration
Authors: Nguyen Tung T. , Almon Richard R. , DuBois Debra C. , Sukumaran Siddharth , Jusko William J. , Androulakis loannis P. 
Published: March 2014

Although corticosteroids (CSs) affect gene expression in multiple tissues, the array of genes that are regulated by these catabolic steroids is diverse, highly tissue specific, and depends on their functions in the tissue. Liver has many important functions in performing and regulating diverse metabolic processes. Muscle, in addition to its mechanical role, is critical in maintaining systemic energy homeostasis and accounts for about 80% of insulin-directed glucose disposal. Consequently, a better understanding of CS pharmacogenomic effects in these tissues would provide valuable information regarding the tissue-specificity of transcriptional dynamics, and would provide insights into the underlying molecular mechanisms of action for both beneficial and detrimental effects. We performed an integrated analysis of transcriptional data from liver and muscle in response to methylprednisolone (MPL) infusion, which included clustering and functional annotation of clustered gene groups, promoter extraction and putative transcription factor (TF) identification, and finally, regulatory closeness (RC) identification. This analysis allowed the identification of critical transcriptional responses and CS-responsive functions in liver and muscle during chronic MPL administration, the prediction of putative transcriptional regulators relevant to transcriptional responses of CS-affected genes which are also potential secondary bio-signals altering expression levels of target-genes, and the exploration of the tissue-specificity and biological significance of gene expression patterns, CS-responsive functions, and transcriptional regulation. The analysis provided an integrated description of the genomic and functional effects of chronic MPL infusion in liver and muscle.
On Varieties of Lie Algebras of Maximal Class
Authors: Barron Tatyana , Kerner Dmitry , Tvalavadze Marina 
Published: March 2014

AbstractWe study complex projective varieties that parametrize (finite-dimensional) filiform Lie algebras over ℂ, using equations derived by Millionshchikov. In the infinite-dimensional case we concentrate our attention on ℕ-graded Lie algebras of maximal class. As shown by A. Fialowski there are only three isomorphism types of ℕ-graded Lie algebras of maximal class generated by L1 and L2, L = 〈L1; L2〉. Vergne described the structure of these algebras with the property L = 〈L1〉. In this paper we study those generated by the first and q-th components where q > 2, L = 〈L1; Lq〉. Under some technical condition, there can only be one isomorphism type of such algebras. For q = 3 we fully classify them. This gives a partial answer to a question posed by Millionshchikov.
Foreword
Authors: BEKEŠ Andrej 
Published: March 2014

The present issue of ALA, the second in its new incarnation, brings two pieces of good news. The first is that it is now also included in the Directory of Open Access Journals (DOAJ), besides Open J-Gate and Google Scholar. The second is that in 2014, the Department of Asian and African Studies of the Faculty of Arts of the University of Ljubljana is going to host the 14th conference of the European Association of Japanese Studies.The focus of this issue is on Chinese and Japanese. Papers devoted to Chinese are more theoretically oriented. In the first paper, David Ta-Chun SHEN argues about which theoretical devices are sufficient to explain the phenomenon in Mandarin where prepositions may or may not undergo the third tone sandhi. The second paper, by Jens KARLSSON, deals with adverbs zai and you in Modern Standard Chinese, showing the similarities of semantic content between the two adverbs and pointing out the main difference between them, i.e. the difference in viewpoint, and possible consequences of this fact.On the other hand, papers devoted to Japanese look at various issues from an applied linguistic perspective. Nagisa MORITOKI, based on her experience of teaching Japanese in Slovenia, discusses the learner and the teacher’s role and their possible strategies when dealing with the vast treasure-trove of information available on the Internet.Next, Bor HODOŠČEK explores genre variation in the newest large-scale modern Japanese language corpus, the BCCWJ, and the usability of modifier-verb ratio as a genre classifier. In the last paper, Irena SRDANOVIĆ and co-authors discuss the issues involved in creating Japanese language word sketches, singling out in particular the lemmatizer, the tagger, the corpus and statistical methods used, and the sketch grammar that is specifically written for Japanese.In this issue’s Book Review, Mateja PETROVČIČ reviews the work by Xiaoqin SU on reflexivity in Chinese, Reflexivität im Chinesischen: Eine IntegrativeAnalyse.
Pronouns, Address Forms and Politeness Strategies in Odia
Authors: SAHOO Kalyanamalini 
Published: March 2014

This study discusses how various politeness strategies are implemented linguistically and how linguistic usage is related to social and contextual factors in the Indic language Odia. The study extends the validity of politeness theory (Brown & Levinson, 1978) with reference to Odia speech-patterns and shows that Odia usage of politeness would be more differentiated according to the social relationship and gender than the content of the message. In Brown and Levinson’s model, individual speech acts are considered to be inherently polite or impolite. However, in Odia, it is found that communities of practice, rather than individuals, determine whether speech acts are considered polite or impolite. Thus, politeness should be considered as a set of strategies or practices set by particular groups or communities of practice as a socially constructed norm for themselves.
A decadal decline in relative abundance and a shift in microphytoplankton composition at a long‐term coastal station off southeast Australia
Authors: Ajani Penelope A. , Allen Andrew P. , Ingleton Tim , Armand Leanne 
Published: March 2014

In this study, we examined 11 yr (1998–2009) of water samples collected from Port Hacking coastal monitoring station 8 km offshore from Sydney, Australia, to assess changes in the microphytoplankton in relation to climate‐related trends in environmental variables. A total of 152 taxa (85 genera) were identified, with the small diatom Thalassiosira cf. partheneia and the tropical cyanobacterium Trichodesmium erythraeum being the dominant species over the past decade. Taxon richness showed a distinct seasonal pattern, peaking in the austral winter. Ordination analyses revealed significant seasonal and interannual trends in species composition, including a decadal decline in dinoflagellates relative to diatoms toward the present. This decadal shift in taxonomic composition was, in turn, significantly associated with declines in water temperatures over this time period. Total abundance varied by 12 orders of magnitude (8.5 × 10−8 to 7.4 × 104 cells L−1), with values separable into bloom and nonbloom regimes at an abundance threshold of 7.1 × 10−5 cells L−1. Significant temporal declines in abundance were observed during both bloom and nonbloom regimes. Blooms occurred most consistently in March, September, and December.