bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of Wind Shear and Wind Energy Potential in the Baltic Sea Region of Latvia
Authors: Bezrukovs V. , Bezrukovs Vl. , Zacepins A. , Komashilovs V. 
Published: May 2018

Abstract
The paper is devoted to the investigation into the wind energy potential based on long-term observations of the wind speed and energy density fluctuations at heights from 10 to 160 m on the Baltic Sea coast of Latvia. During the observations (2004 - 2013), the wind speed and direction values were measured, and the statistical database was accumulated using a LOGGER 9200 Symphonie measuring systems mounted on 60 m masts - one on the western coast and another on the north-east of Latvia. From June 2011 to May 2012, these measurements were complemented with the data for the heights from 40 to 160 m obtained by means of a ZephIR lidar and with the metrological data provided by “Latvian Environment, Geology and Meteorology Centre” for the same period. The graphs of seasonal fluctuations in the wind speed were obtained for the heights up to 160 m by measurements over the period of 2007 - 2013. The results of the research on the wind speed distribution up to 200 m are promising for evaluation of the wind energy potential of Latvia and will be helpful in assessment of prospective sites for construction of WPPs.
Non-Contact Measurement of the Thickness and Dielectric Parameters of Dielectric Plates and Shells
Authors: Matiss I. 
Published: May 2018

Abstract
The paper describes a new approach for non-destructive testing of the structural and geometric parameters of dielectric objects using capacitance techniques. The novelty of this approach lies in the design of a capacitance sensor comprising an array of electrodes with changeable potential distribution on them during a measurement process. This makes solvable the problem of measuring independently three input parameters. To demonstrate the capabilities of the developed measurement algorithms, the case studies based on computer simulation have been carried out.
Hardware Design of the Energy Efficient Fall Detection Device
Authors: Skorodumovs A. , Avots E , Hofmanis J , Korāts G. 
Published: May 2018

Abstract
Health issues for elderly people may lead to different injuries obtained during simple activities of daily living. Potentially the most dangerous are unintentional falls that may be critical or even lethal to some patients due to the heavy injury risk. In the project “Wireless Sensor Systems in Telecare Application for Elderly People”, we have developed a robust fall detection algorithm for a wearable wireless sensor. To optimise the algorithm for hardware performance and test it in field, we have designed an accelerometer based wireless fall detector. Our main considerations were: a) functionality – so that the algorithm can be applied to the chosen hardware, and b) power efficiency – so that it can run for a very long time. We have picked and tested the parts, built a prototype, optimised the firmware for lowest consumption, tested the performance and measured the consumption parameters. In this paper, we discuss our design choices and present the results of our work.
The Influence of Wind Turbines on Radio Astronomical Observations in Irbene
Authors: Bezrukovs D. 
Published: May 2018

Abstract
The reflection and diffraction of external communication and navigational transmitters from tall constructions and moving blades of wind turbines produce some short-pulse additional electromagnetic interference strong enough to fully disturb radio astronomical observations. The problem of short-pulse electromagnetic interference is distinctive to all radio telescopes surrounded by wind turbines. This problem became significant for Ventspils International Radio Astronomy Centre (VIRAC) after new wind park “Platene” of Winergy Ltd. was built in 2012 and radio telescopes RT-16 and RT-32 renovated and equipped with cryogenic high sensitive receivers. The paper deals with the analysis and evaluation of intensities and probabilities of short-pulse interferences produced by wind park “Platene” and its possible impact on radio astronomical observations at VIRAC radio telescopes.
Embedded Adaptive Neuro Fuzzy Inference System with Hardware Implemented Real Time Parameter Update
Authors: Brassai Sándor Tihamér , Hajdu Szabolcs , Tămas Tibor 
Published: May 2018

Abstract
In the paper a Sugeno architecture based hardware implemented neuro adaptive inference system’s training algorithm is presented. The block diagram of the neuro-adaptive inference system output computing implemented in hardware is discussed, and the implementation in reconfigurable circuit of real-time parameter tuning is presented. The proposed system functionality based on measurements achieved is demonstrated. The resulted architecture has a very high processing speed, and the parameter adaptation works in parallel with the output processing. The proposed architecture can also be used for different training algorithms’ development.
Performance Analysis of Sparse Data Structure Implementations
Authors: Böröcz Péter , Tar Péter , Maros István 
Published: May 2018

Abstract
Sparse linear algebraic data structures are widely used during the solution of large scale linear optimization problems. The efficiency of the solver is significantly influenced by the used data structures. The implementations of such data structures are not trivial. A performance analysis of the available data structures can provide valuable information to improve efficiency. In the talk we present our software that supports this task as well as our new, special vector representation. We also report results covering the solution for numerical issues affecting the performance of sparse linear algebraic operations.
Effect of Oxygen Doping on the Structure of TiN Surface Coatings
Authors: Bíró Domokos , Jakab-Farkas László , Kelemen András , Papp Sándor , Hasaneen Mohamed Fathy , Menyhárd Miklós , Gurbán Sándor , Barna Péter B. 
Published: May 2018

Abstract
In the present work the influence of the level of oxygen doping on the structure of TiN films was investigated by dedicated experiments. The films were deposited at 400°C in an all metal UHV device by unbalanced magnetron sputtering at the same Ar and nitrogen flow rates, but the oxygen flow rate was changed in the experiments, incorporating oxygen in the range of 4 and 20 at.%. The structure of the films was investigated by XRD, Auger electron (AES) and X-ray photon electron (XPS) spectroscopy and transmission electron microscopy (TEM). The results discovered the crystal face anisotropy in the incorporation-segregation of oxygen leading to the change of the <111> texture to <002>. The structure analysis revealed that the <002> texture is developing also by competitive growth of crystals, which is the result of the limitation of the growth of the <111> oriented crystals by the TiO2 layer developing on their growth surface by the segregated oxygen species. The oxygen incorporating in the crystal lattice on the 002 crystal faces of the <002> oriented crystals is segregated by surface spinodal decomposition, developing nm sized 3D TiO-2 inclusion both in the bulk of the columns and the column boundaries.
Mathematical Modelling for Micropiles Embedded in Salt Rock
Authors: Rădan (Toader) Georgiana , Rădulescu Nicoleta , Oancea Gheorghe 
Published: May 2018

Abstract
This study presents the results of the mathematical modelling for the micropiles foundation of an investement objective located in Slanic, Prahova county. Three computing models were created and analyzed with software, based on Finite Element Method. With Plaxis 2D model was analyzed the isolated micropile and the three-dimensional analysis was made with Plaxis 3D model, for group of micropiles. For the micropiles foundation was used Midas GTS-NX model. The mathematical models were calibrated based with the in-situ tests results for axially loaded micropiles, embedded in salt rock. The paper presents the results obtained with the three software, the calibration and validation models.
Seismic Design of Masonry Buildings Some Gaps in Structural Eurocodes and their Correction by Codes CR 6 -2013 and P 100-1/2013
Authors: Petrovici Radu 
Published: May 2018

Abstract
Experience of designing buildings with structural masonry walls and masonry non-structural elements using Codes CR 6-2006 [15a] and P 100-1/2006 [16a], that were developed based on design principles and rules of Eurocodes adopted in Romania SR EN 1996-1-1[13] and SR EN 1998-1[14], revealed the need of some additions and corrections of texts.
These interventions made by developing Codes CR 6 -2013[15] and P 100-1/2013[16], which we can characterize synthetically as follows:

- Are aligned with the Structural Eurocodes principles but correcting some identified deficiencies.

- Resume some previous provisions of national regulations that lack in Eurocodes

- Introduce the results of recent theoretical and experimental research

- Provide practical application rules, simple and explicit, accompanied by “Commentary” and “Design examples”

The communication exposes and justifies synthetically the following new approaches introduced in the 2013 editions of the two regulations:

Modification of the methodology for the partial safety factors (γM) and for establishing the minimum necessary strength values of masonry.

Additions and explanations of the design rules for unreinforced and confined masonry subjected to combined axial compression and flexure and to shear loading.
Social networking in Bangladesh: Boon or curse for academic engagement?
Authors: Mouri Dey , Ali Arshad Chowdhury 
Published: May 2018

Abstract
The number of social networking services (SNSs) users in Bangladesh is increasing at an accelerating rate. There are many who argue that SNS usage is destroying the students’ future by diminishing their academic engagement. The authors aim to investigate whether there is any relationship between students’ academic performance and their SNS usage. The study chose Facebook as a representative of SNSs because this is the most popular platform for online social connectivity and conducted a survey regarding the usage of Facebook among students of Business Administration from three private Bangladeshi private universities. The research results show that Facebook can be used for at least 21 academic tasks or goals and that these can be grouped into six major factors. Moreover, students opine that their online socializing does not reduce their study time, instead it helps them get the latest study related information, sharing courses, class schedules etc. After running a regression analysis, the authors conclude that the students’ level of engagement with the academic life through Facebook does not influence their academic results. The reason for this insignificant relation between academic results and academic engagement through SNSs may be due to the non-diversified course curriculum, the traditional way of delivering lectures and evaluating, limited study materials, non-receptiveness to technology-based learning etc. However, the authors propose to include SNSs as a study tool as it is a popular media and to conduct further research to better understand the effective way of using it in the education system.
Association Between Bacterial Vaginosis and Squamous Intraepithelial Lesions of the Uterine Cervix
Authors: Dabeski Drage , Danilovski Dragan , Antovska Vesna , Basheska Neli , Stojovski Marjan , Popovska Zora , Buklioska Adriana , Avramovska Maja 
Published: May 2018

Abstract
Introduction. Bacterial vaginosis is polymicrobial, primarily anaerobic infection, previously called non-specific vaginitis or vaginitis accompanied by Gardne-rella vaginallis. It is a result of an imbalance between different types of bacteria in the vagina. The aim of the study was to determine the association between bacterial vaginosis and squamous intraepithelial lesions of the uterine cervix.
Methods. This cross-sectional study was conducted in a series of 338 sexually active women with cytologicallly diagnosed squamous intraepithelial lesion of the uterine cervix at the University Clinic of Gynecology and Obstetrics in Skopje in the period from October 2014 to October 2015. The age of the patients ranged from 20 to 59 years (35±10.49). All women underwent cervical biopsy with endocervical curettage for histopathological analysis and cervical biopsy for detection and HPV typing. Criteria for diagnosis of bacterial vaginosis was the presence of ≥20% clue cells of ePapanicolaou smear.
Results. Bacterial vaginosis was detected in 19.5% (66/338) of the examined women. The most affected was the young population under the age of 30 years. The results showed an association between bacterial vaginosis and squamous intraepithelial lesions of the uterine cervix (p=0.032). There was no association between bacterial vaginosis and the grade of lesion of the uterine cervix (p=0.118), nor with HPV infection (p=0.570). But, however an association was found between HPV infection and squamous intraepithelial lesions of the uterine cervix (p=0.001).
Conclusion. The most common risk factor for squamous intraepithelial lesions of the uterine cervix are persistent high-risk HPV infections. Bacterial vaginosis is the most common co-infection.
Influence of Physical Therapy Modalities on Pain in Osteoporosis Patients: initial results of the treatment with physical therapy
Authors: Koevska Valentina , Perchinkova-Mishevska Snezana , Nikolik-Dimitrova Erieta , Mitrevska Biljana 
Published: May 2018

Abstract
Introduction. Osteoporosis causes chronic back pain leading to restriction of functional capacity and quality of life. The aim of this study was to examine the influence of physical therapy modalities on pain in patients with osteoporosis.
Methods. This is a prospective study of patients with osteoporosis, randomly chosen and followed for three months in the Institute of Physical Medicine and Rehabilitation (IPMR). Physical therapy consisted of physical modalities and therapeutic exercises. Physical therapy modalities included interferential currents and pulsed low-frequency electromagnetic field conducted each day with weekend breaks, 21 in total. Patients had therapeutic exercises 3 times a week during the entire follow-up period. Patients were assigned into two groups. The first group consisted of nine patients who underwent physical procedures and the second group consisted of nine patients who did not receive physical therapy modalities. Two check-ups were made on day 21 and at the end of the third month. Assessment of pain intensity was made by the use of a numeric pain rating scale.
Results. No significant difference between the groups was observed regarding mean age of patients (p<0.21). The first check-up showed a significantly higher pain score in the second group of patients (p=0.0003). There was no significant difference in pain intensity between both groups of patients in the three-month period of investigation (p<0.63).
Conclusion. Physical therapy modalities influence on pain in patients with osteoporosis. Our investigation included a small number of patients and hence further studies are necessary.
Leiomyoma of the Ileum: A Case Report and Literature Review
Authors: Roso Ivana , Fildiski Igor , Panovski Milcho 
Published: May 2018

Abstract
Introduction. Leiomyomas are infrequently localized on the ileum. They are diagnosed accidentally or due to complications from their existence.
Case report. We present a case of a 65-year-old patient, with CT angiogram performed due to a pain, swelling and coldness in the lower extremities, which pointed to a well-vascularized tumorous formation on the small intestines. Anamnestic and laboratory findings were negative for the existence of carcinoid. Exploratory laparotomy with partial resection of the ileum was performed, using “no touch” technique and a termino-terminal anastomosis was done.
Results. The operative and postoperative period were uneventful. The histopathological finding confirmed leiomyoma of the small bowel.
Conclusions. Leiomyomas of the small intestines are rare and their clinical presentation is atypical. The surgical therapy is primary and often indicated to accidentally discovered lesions. Definitive diagnosis is confirmed with histopathological analysis from which the further therapy depends.
Partial Liver Herniation Through the Incisional Defect on Anteriot Abdominal Wall
Authors: Gligorievski Antonio , Lazarova Ana 
Published: May 2018

Abstract
Introduction. Ventral hernias are quite common, but liver herniation is an extremely rare case. This type of abdominal protrusion of part of the liver usually occurs through incisional weak spots on the abdominal wall. Incisional herniation of the liver usually occurs 2 to 3 years after an abdominal operation consequently leading to focal weakness of the abdominal wall.
Case report. We present an extremely rare case of incisional herniation of part of the left and smaller part of the right liver lobe in a woman aged 64 years, as a consequence of a previous open cholecystectomy, creating a focal abdominal wall weakness. Abdominal CT scan was performed. Analysis of the CT scans, as well as of the reconstruction made in the coronal and sagittal plane was performed. Herniation of the left and the smaller part of the right liver lobe through an incisive focal weakness of the right upper quadrant of the abdominal wall was detected.
Discussion. Incisional hernias are delayed complications of abdominal surgery. They can occur anywhere on the abdominal wall and are more frequently encountered in a vertical than in a transverse incision. Typically, incisional hernias occur during the first months following surgery, but later occurrence has been reported as well. Herniation of the liver through the anterior abdominal wall is an extremely rare condition and usually related to previous surgery on the upper abdomen. Due to its rarity it is both a diagnostic and therapeutic challenge.
Conclusion. We can conclude that there is a connection between liver herniation through the upper abdominal wall and a previously performed open abdominal surgery. CT is the method of choice for diagnosis of liver herniation through the anterior abdominal wall.
Treatment of Severe Autoimmune Diseases with Autologous Hematopoietic Stem Cell Transplantation
Authors: Stojanoski Zlate , Karadzova-Stojanoska Anzelika , Pivkova-Veljanovska Aleksandra , Genadieva-Stavrik Sonja , Cadievski Lazar , Ivanovski Martin , Karanfilski Oliver , Cevreska Lidija , Georgievski Borce 
Published: May 2018

Abstract
Introduction. Autoimmune diseases are a family of more than 100 heterogeneous conditions that affect 5 to 8% of the world’s population. The etiology is still un-known but the disregulation of the regulatory T-lymphocytes play a central role inthe autoimmunity and the success of the long-term remission. Although conventional immunosuppression and new biological agents can provide disease control in severely affected patients, such treatments are rarely curative and alternative strategies are needed. Indeed, severe forms of systemic autoimmune diseases, such as multiple sclerosis (MS), systemic sclerosis (SSc), rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), juvenile idiopathic arthritis (JIA), hematologic immune cytopenia (HIC) and Crohn’s disease are difficult to be treated. High-dose immunosuppressive therapy followed by autologous stem cells transplantation is reliable option for a successive treatment of this group of patients.
Aim. To determine the safety of the procedure of autologous stem cell transplantation in patients with autoimmune diseases and concomitant malignant hematological disorders.
Methods. During a period of 15 years (from September 2000 to September 2015) at the University Clinic of Hematology in Skopje we have treated 6 patients with autoimmune disease and concomitant hematological neoplasm. None of the patients was treated for primary autoimmune diseases. Two men and 4 women, with median age of 47 years were treated. Sjogren syndrome and multiple myeloma were found in 2 patients, polyartheritis nodosa and multiple myeloma in 1 patient, rheumatoid arthritis and acute myeloblastic leukemia in 1, systemic lupus erythematosus and non-Hodgkin lymphoma in 1; severe psoriasis and acute myeloblastic leukemia in 1 patient.
Results. All treated patients are alive after trans-planted procedure, with transplant related mortality day +100: 0.
Conclusion. Autologous stem cell transplantation is safe and recommended option for treatment ofpatients with autoimmune disease and hematologic neoplasm.
Doppler Comparative Measurements in the Reconstruction of Limbs with Flaps and Grafts
Authors: Dzonov Boro , Noveski Lazo , Nikolovska Suzana , Zhogovska Elizabeta 
Published: May 2018

Abstract
Doppler technique was first described by the Australian physicist and mathematician Christian Doppler. Doppler effect is defined as a reflection of high frequency sound waves of different frequency when they come in contact with the movable structure in the blood vessel. Waves that go to transducers are coded red, while waves that move away from the transducer are coded blue. Doppler main types can be classified as following: continuous wave (CW) Doppler, spectral Doppler, color Doppler and Power Doppler color. The study was realizedat the University Clinic for Plastic and Reconstructive Surgery. It is a randomized prospective study. During the study two groups of 30 patientseach were formed. Each patient was required a permission for reconstructive surgery procedure and an informed consent for participation in the study. For all patients a specially designed questionnaire (non-standardized) was filled out.
1. First (I) group of patients treated with flaps. In this group a type of reconstructive technique with skin or complex flapshas been applied.
2. Second group (II) of patients treated with grafts (split thickness grafts). In this group applied reconstruction comprised application of skin grafts with partial thickness.
The study included patients with defects of the skin and soft tissues, whohad an indication for reconstructive surgery procedure. Exclusion criteria of patients for participation in the study were: children under 14 years of age, adults over 75 years, people with systemic diseases that can affect the results of reconstructive intervenetions and patients who have without periosteum bone-like surface defect as contraindication for skin grafting. The results of the reconstructive procedures according to the objectives set were investigated clinically into three time periods: preoperative, postoperative day 7 and day 30 postoperatively. The following investigations were carried out: determination of the circulation levels by means of Doppler; determination of the levels of limbs circulation is distal to the site of reconstruction in the pre-and postoperative period (day 7 and day 30);
For the evaluation of blood flow the following parameters were used:
• PSV-Peak systolic velocity
• PI - Pulsatility index
RI - Resistance indexPI and RI were calculated using the formula:
• PI = PSV - EDV / Vmean
• RI = PSV - EDV / PSV
EDV indicates the flow velocity in late diastole and V mean, the average speed of blood flow through the artery. By assessment of arterial status before and after surgery through the analysis ofvascular waves at different locations of the vascular tree of the upper and lower extremities, we registered significant difference between the two examined groups, which speaks in favor of the use of flaps in reconstruction of the lower limbs.