bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hull Resistance of An Inland Waterway Vessel in Model Scale and in Full Scale
Authors: Tabaczek Tomasz , Zawiślak Maciej 
Published: June 2018

Abstract
Data from model tests of an inland waterway vessel in shallow water have been used by the authors to prepare the resistance prediction in full scale. The common ITTC-1978 extrapolation procedure was applied using form factor determined according to the Prohaska method and, separately, by fitting the approximation function to resistance data. At the same time a series of CFD computations of ship flow has been carried out in model scale and in full scale, with double-body model as well as including the effect of free surface. The results of computations were used to determine total resistance and form factor. The values of form factor determined using different methods are similar and relatively high in comparison to values being applied to conventional sea going ships. Resistance prediction according to the ITTC-1978 with form factor was compared to prediction without form factor. The relative difference of resistance amounts 28% at ship speed of 10 km/h and 24% at ship speed of 12 km/h.
Influence of Natural Conditions on the Imaging of the Bottom of the Gdańsk Bay by Means of the Side Scan Sonar
Authors: Witos-Okrasińska Dominika , Grelowska Grażyna , Kozaczka Eugeniusz 
Published: June 2018

Abstract
The interest in underwater resources is the reason for the development of modern hydroacoustic systems, including side sonars, which find numerous applications such as: research of seabed morphology and sediment characteristics, preparation of sea sediment maps, and even in special cases of biocenoses such as sea grass meadows, detection of specific targets at the bottom such as shipwrecks, mines, identification of suitable sites for maritime infrastructure. Such applications require precise information about the position of the objects to be observed. Errors affecting the depiction of the bottom using hydroacoustic systems can be divided into errors associated with improper operation of measuring and support devices, systematic errors and random errors. Systematic errors result from the changing conditions prevailing in the analyzed environment affecting the measurement system. The errors affecting the correct operation of hydroacoustic systems can include: changing angle of inclination of the beam caused by the vessel’s movement on the wave or refraction connected to changes in the sound speed as the depth function.
The Imaging of Gdansk Bay Seabed by Using Side Sonar
Authors: Grelowska Grażyna , Kozaczka Eugeniusz , Witos-Okrasińska Dominika , Szymczak Wojciech 
Published: June 2018

Abstract
This paper is mainly aimed at presentation of an impact of environmental conditions on imaging accuracy by using hydro-acoustic systems in waters of a high non-uniformity of spatial distribution of hydrological parameters. Impact of refraction on erroneous estimation of range, in case of wave radiation into water under a large angle, like in side sonars or multi-beam echo-sounders, is especially important. In this paper seasonal changes in sound speed and its impact on acoustic beam refraction is discussed. And, examples which illustrate errors in determination of side sonar range occurred during last investigations carried out in Gdansk Bay waters are presented.
Application of Rapid Prototyping Technology in the Manufacturing of Turbine Blade With Small Diameter Holes
Authors: Deja Mariusz , Dobrzyński Michał , Flaszyński Paweł , Haras Jacek , Zieliński Dawid 
Published: June 2018

Abstract
The article presents the possibilities++ of using Rapid Prototyping (RP) technology in the manufacturing of turbine blades with small diameter holes. The object under investigation was gas turbine blade with small diameter cooling holes and holes for generating longitudinal vortices. A turbine blade model was produced by means of Direct Metal Laser Sintering (DMLS) technology and subsequently validated in terms of detection and accuracy of the obtained holes. The application of the computer tomography and digital radiography technique resulted in obtaining a series of cross-sections of the turbine blade model with a series of holes. Particular attention was pointed out at the investigation of the locations of micro-holes with a diameter of 0.3 mm. It turned out that it was impossible to make such small holes by the RP method. In the following part the results of the study on the possibilities of making the micro-holes using electrical discharge method have been presented. In addition, proposition of further works such as the development of the considerations and issues discussed in this article, has been offered.
Assessment of Technological Usefulness of Panel Production Line in Shipbuilding Process
Authors: Urbański Tomasz , Graczyk Tadeusz , Taraska Michał , Iwańkowicz Remigiusz 
Published: June 2018

Abstract
This paper presents assessment of technological usefulness of panel production line in prefabrication process of large ship hull sections, in which special attention is paid to producibility of welding operations. Basing on the assessment these authors worked out hierarchy of analyzed sequences of welding technological processes as well as production line stands used for the processes. The assessment was performed on the basis of analysis of a concept of panel production line based on real production lines functioning in shipbuilding industry, as well as technical documentation of typical hull sections of a multi-purpose ferry. The presented analysis took into account impact of technological - constructional parameters onto producibility of welding process of prefabricated sections. Among these parameters the following were numbered: mass of the sections and number of their elements, total length of welds, labour consumption, material consumption as well as linear heat input in welding operations. On the basis of the achieved results, places which worsen effectiveness of production line operation were identified, as a result it was possible to formulate proposals for modernization of flow prefabrication line for hull sections.
Modeling of the Two-Dimensional Flow Caused by Sea Conditions and Wind Stresses on the Example of Dead Vistula
Authors: Zima Piotr 
Published: June 2018

Abstract
The article presents the results of two-dimensional modeling of flows caused by the sea conditions and wind stresses on the example of Dead Vistula. Based on the available bathymetric data, a numerical model of the river section was created, which was supplemented with data on the position of the water table depending on hydrometeorological conditions. To describe the flow field in steady conditions, a simplified model of two-dimensional flow in the form of the bi-harmonic Helmholtz equation for the current function has been adopted, taking into account additional impacts caused by wind stresses on the water surface. Then the current function was converted into the velocity vector components. This equation, supplemented with appropriate boundary conditions, has been solved numerically using the finite difference method. On the basis of the available literature, 4 variants of hydrometeorological conditions were adopted, depending on the direction and strength of wind and sea conditions. The obtained results were compared with the results of published measurements taken on the studied section of the river. These calculations were the basis for the implementation of a two-dimensional model of the spread of pollutants in the studied section of the Dead Vistula.
Influence of Lubricating Oil Improvers On Performance of Crankshaft Seals
Authors: Bzura Piotr 
Published: June 2018

Abstract
This paper presents an original method for checking influence of lubricating oil improvers on performance of crankshaft seals of combustion piston engine. Crankshaft seals were tested with the use of a modified friction node of T-02 four-ball apparatus in laboratory conditions. The tests were conducted according to a worked-out algorithm. Their results confirmed usefulness of the method for determining „harmful” performance of sealing systems, which makes it possible to assess operational usability of lubricating oil improvers. On the basis of an analysis of the results a scientific hypothesis saying that lubricating oil quality affects correctness of performance of crankshaft seals of combustion piston engine, was formulated. The hypothesis was verified by means of induction inference and statistical method with taking into account Fisher statistics.
Selected Combined Power Systems Consisted of Self-Ignition Engine and Steam Turbine
Authors: Olszewski Wojciech , Dzida Marek 
Published: June 2018

Abstract
This paper presents optimization of selected combined diesel engine-steam turbine systems. Two systems: the system combined with waste heat one-pressure boiler only and its version containing additionally low-pressure boiler proper feeding degasifier and the system of two-pressure cycle, were taken into considerations. Their surplus values of power output and efficiency associated with utilization of waste heat contained in piston engine exhaust gas were compared to each other. For the considerations two high-power low-speed engines were taken into account. The main engines of comparable power of about 54 MW produced by Wartsila and MAN Diesel & Turbo firms, were selected.
Comparison Analysis of Blade Life Cycles of Land-Based and Offshore Wind Power Plants
Authors: Tomporowski Andrzej , Piasecka Izabela , Flizikowski Józef , Kasner Robert , Kruszelnicka Weronika , Mroziński Adam , Bieliński Kazimierz 
Published: June 2018

Abstract
In recent years, the offshore wind power industry has been growing dynamically. A key element which decides upon power output of a wind power plant is blades. They are most frequently produced from polymers – laminates with epoxy resins and fiberglass. In the near future, when the blade life cycles are over, large amounts of waste material of this type will have to be reused. This paper presents a comparison analysis of the impact of particular material existence cycle stages of land-based and offshore wind power plant blades on the environment. Two wind power plant blades, of about 49 m in length each, were examined using the LCA method, the programme SimaPro, and Ekowskaźnik 99 modelling (phase LCIA).
Indices for Assessing Potential Environmental Hazard from Future Ship Scrapping Process, Determinable in Ship Design Stage
Authors: Liberacki Roman 
Published: June 2018

Abstract
This paper shortly presents the issue of utilization of ships after their withdrawal from service. Information on number of floating units liquidated in previous years was presented. Hazards to the environment, health and life of workers employed in the Far East ship scrapping yards operating on the beaches, were indicated. Then, the most important rules which have to make the ship recycling process safe were referred to. This author proposed to supplement the rules by environmental hazard indices which would be determined already in ship design stage. According to the concept the indices should take into account amount of dangerous substances used for building the ship as well as degree of their harmfulness (weighing factors). Two approaches to the issue of determining the weighing factors were proposed: deterministic and fuzzy.
The Effects of a Study-Abroad Experience on Pre-Service Foreign Language Teachers’ Teaching Philosophies
Authors: Tulgar Ayşegül Takkaç 
Published: June 2018

Summary
With the globalization of the world and the ease to travel to different parts of the globe, the popularity of exchange programs for students has increased. Many students around the world apply such programs in order to have international learning experiences in which they can, besides educational purposes, meet new social and cultural values while introducing their native cultures. As study-abroad experiences have attracted attention regarding their various effects on the participants, research focusing on students participating in such programs may provide useful insight on their contributions to pre-service teachers’ teaching philosophies. Therefore, this study is intended to investigate the effects of a study-abroad experience on the way three pre-service teachers perceived the teaching profession and whether it modified their teaching philosophy. The data were collected through reflection reports and semi-structured interviews with three Turkish pre-service teachers who spent a semester in Hungary on a study-abroad experience. Content analysis was adopted for data analysis. The results revealed that the participants developed in terms of their linguistic, personal, social, cultural and educational understanding, which in turn contributed to their perceptions and conceptions of the teaching profession and caused them to adjust their teaching philosophies. In the light of these results, some suggestions are provided.
Linking Virtual and Physical Mobility: A Success Story of a Multilingual and Multicultural Exchange
Authors: Griggio Lisa 
Published: June 2018

Summary
The article presents a scientific analysis of a practical application of multilingual and multicultural education at higher education, more specifically, the description of the eTandem project developed and launched by the Language Center of the University of Padua, which won the European Language Label (ELL) in December 2016. The project was selected and nominated since it provides a methodological approach and study strategies which favour multilingualism, mobility for young people and inclusiveness. The project is based on an online exchange between Italian students enrolled at the University of Padua and international students who will be coming to the University. It differs from many other telecollaboration projects in that it involves different languages, levels of language competence as well as various ways of interaction. Indeed, it implies three different ways of communication among participants: (1) one-to-one partnership in the students’ target language; (2) many-to-many interaction in Italian and/or English/French/Spanish as linguae francae on a Moodle platform and/or in a social Facebook area; (3) one-to-many multilingual interaction carried out by e-tutors in Facebook. They provide students with useful links regarding cultural events and things to do in Padua and its surroundings, as well as recent news and interesting linguistic and cultural issues related to different countries. Mobility, informality, autonomy, reciprocity, friendship, fun and multilingual community are the key words of this initiative whose objectives are aimed at developing linguistic, cultural, personal, social and digital skills in different languages, even in the less used and less taught ones.
Translator’s Preface as a Genre: A Comparative Analysis of Lithuanian and English Prefaces
Authors: Bikmanienė Milda 
Published: June 2018

Summary
Translations serve as a right to the international existence as they allow the national literature to reach wider audiences. Moreover, they allow readers to get acquainted with literature of other cultures. For these reasons, translators have an important role in the literary world. Translators’ prefaces are the main link between readers and translators. However, there is a lack of analysis of this specific genre. This research aims at analysing translator’s preface as a genre and examining differences and similarities of genre features in Lithuanian and English prefaces. 30 Lithuanian and 30 English translators’ prefaces are analysed according to genre elements, such as the format, genre moves and functions. The analysis covers a wide range of examples of both Lithuanian and English fiction books. For this reason, the analysed translators’ prefaces are published in different years, are translated by different translators and are published by different publishing houses. It may be noted, that the analysis reveals that Lithuanian translators tend to be more invisible in their prefaces than English translators. They focus on the author and provide little of their own evaluation and explicit explanations on translation issues. However, English translators focus on the translation process and the subjective analysis. The analysis also demonstrates that the basic format of prefaces is beginning with a title and ending with a signature.
Міжкультурна консолідація як запорука національної єдності та стабільності в Україні
Authors: Afanasyeva Lyudmila , Glinska Lyudmila 
Published: June 2018

У статті здійснено аналіз основних факторів міжкультурної консолідації українського суспільства. Процес консолідації проаналізовано в таких основних площинах, як міжкультурна взаємодія та порозуміння, подолання стереотипів, міжкультурна комунікація й діалог культур, етнічна неоднорідність українського суспільства та соціальна напруженість як загроза національній та політичній стабільності. Наголошено, що міжкультурна взаємодія та діалог культур може сприяти процесу зближення етнічних культур, стимулювати їх розвиток і забезпечувати міжнаціональну злагоду й консолідацію суспільства.
Установлено, що в процесі міжкультурної комунікації взаємодіючі сторони повинні виходити з усвідомлення залежності однієї культури від іншої, розуміння цінностей іншої культури. Це забезпечує взаєморозуміння, що ґрунтується на взаємоповазі й не обмежується лише толерантністю та терпимістю. Усвідомлення й прийняття цих аспектів є основою успішної і позитивної міжкультурної взаємодії, що сприятиме зростанню розуміння в міжкультурній комунікації. Виключно на цій основі слід діяти, щоб створити атмосферу довіри, рівності і терпимості, які забезпечують ефективну міжкультурну комунікацію.
Визначено, що культурна консолідація суспільства сьогодні означає процес об’єднання, згуртування груп громадян на основі їхніх переваг і певної ресурсної бази з метою артикуляції своїх інтересів та участі в розв’язанні соціальних проблем.
Соціальна стратифікація суспільства: теоретична та емпірична інтерпретація поняття
Authors: Kuzmuk Olga 
Published: June 2018

У статті здійснено аналіз поняття «соціальна стратифікація суспільства», вивчено дефініцію цього поняття, акцентовано також на виокремленні вимірів стратифікації та критеріїв, на підставі аналізу яких, можна робити висновок про виділення певних статусних груп й ідентифікацію певного індивіда або групи з певним соціальним класом чи статусною групою.
Інтерпретацію поняття «соціальна стратифікація суспільства» здійснено через поняття «соціальна нерівність». За основу взято дефініція соціальної стратифікації В. Ільїна, який визначає соціальну її як «ієрархічно впорядковану соціальну нерівність». Центральне місце в статті займає позиція про те, що закріпленість різних груп людей за відповідними родами діяльності і є основою соціальною нерівності, оскільки соціально-економічний розподіл праці – це причина та наслідок привласнення одними людьми влади, власності й, відповідно, позбавлення права на володіння цими привілеями інших людей. Цей феномен відображено в концепції «інституціоналізація соціальної нерівності» П. Штомпки, аналіз якої теж здійснено у цій розвідці.
Емпіричну інтерпретацію концепту «соціальна стратифікація» реалізовано за допомогою виокремлення трьох автономних вимірів соціальної стратифікації: влади (політичний статус), власності (економічний статус) та престижу (освітньо-професійний статус).
A Surveyof human face detection methods
Authors: Qais Abdulalla Farah , Sadiq abduljabar Asmaa , Hameed Shaker Shaimaa 
Published: June 2018

The aim of this research is to produce a critical survey on detecting and extracting human face with the features over the past 10-15 years. Face Detection is one of the most common techniques in various future visual applications, such as teleconferencing, facial recognition systems, biometrics and human computer interface , not only because of the difficult nature of the face as an object, but also because of the myriad applications that require face detection application as a first step .
Finally, we offer a facial detection technology based on skin color segmentation as well as the facial features inside it. The determination of the human face as elliptical area was achieved. Meanwhile, several techniques were used such as enhancement, thresholding, edge detections and binarization techniques to achieve the aim of the suggested method. The facial features are detected and extracted inside the elliptical area; these features can be categorized in three parts: Nose, Mouth and lips localization. The features are detected and extracted in the human face based on image processing techniques.
Pengaruh Pemberian Permainan Sebagai Bentuk Pemanasan Terhadap Minat Siswa Dalam Mengikuti Pelajaran Pendidikan Jasmani
Authors: Lusianti Septyaning 
Published: June 2018

Penelitian pada permainan sebagai bentuk pemanasan, dengan perlakuan sebanyak empat kali pertemuan, yang bertujuan untuk menarik minat siswa dalam mengikuti pembelajaran pendidikan jasmani. Dalam penelitian ini menggunakan metode eksperimen dengan bentuk desain penelitian Randomized control group Pretest-posttest. Dalam pembagian kelompok ada dua yaitu kelompok eksperimen yang diberikan perlakuan berupa permainan sedangkan kelompok kontrol tetap diberikan pemanasan biasa sebagai pembanding.
Analisis datanya dengan Uji T, yang menunjukkan ada hasil perbedaan antara perlakuan (kelompok eksperimen) dan tanpa perlakuan (kelompok kontrol). Hasil uji t paired t-test (uji beda sampel berpasangan) pada: (1) kelompok eksperimen t hitung 12,01 dan nilai t tabel 2,03 (2) kelompok kontrol t hitung 5,44 dan t tabel 2,03. Hasil dari uji t Independent sample t-test (uji beda sampel kelompok) yaitu t hitung 5,0355 dan t tabel 2,0.
Simpulan penelitian bahwa pemberian permainan sebagai bentuk pemanasan dapat meningkatkan minat siswa dalam mengikuti pembelajaran pendidikan jasmani.
Pengaruh Latihan Three Cone Drill, Four Cone Drill, Dan Five Cone Drill Terhadap Kelincahan (Agility) Dan Kecepatan (Speed)
Authors: Diputra Rahman 
Published: June 2018

Tujuan dari penelitian ini yaitu untuk menganalisis tentang: (1) pengaruh pemberian three cone drill terhadap kelincahan (agility) dan kecepatan (speed); (2) pengaruh pemberian four cone drill terhadap kelincahan (agility) dan kecepatan (speed); (3) pengaruh pemberian five cone drill terhadap kelincahan (agility) dan kecepatan (speed); (4) manakah yang berpengaruh lebih besar antara latihan three cone drill, four cone drill, five cone drill dalam meningkatkan kelincahan (agility) dan kecepatan (speed). Sasaran penelitian ini adalah peserta SSB se-Kecamatan Pare kelompok umur 16-17 tahun dengan jumlah sampel sebanyak 45 peserta.
Jenis penelitian yang digunakan adalah kuantitatif dengan metode eksperimen. Rancangan penelitian ini menggunakan pre and post test design, dan analisis data menggunakan Anova. Proses pengambilan data dilakukan dengan menggunakan tes lari model Z untuk kelincahan dan lari 30 meter untuk kecepatan pada saat pretest dan posttest. Selanjutnya data hasil penelitian dianalisis dengan menggunakan bantuan SPSS seri 17.0.
Hasil penelitian menunjukkan: (1) Nilai Sig. sebesar 0,000 lebih kecil dari 0,05 (p<0,05). Dengan kata lain terdapat pengaruh yang signifikan latihan three cone drill terhadap peningkatan kelincahan (agility) dan kecepatan (speed); (2) Nilai Sig. sebesar 0,000 lebih kecil dari 0,05 (p<0,05). Dengan kata lain terdapat pengaruh yang signifikan four cone drill terhadap peningkatan kelincahan (agility) dan kecepatan (speed); (3) Nilai Sig. sebesar 0,000 lebih kecil dari 0,05 (p<0,05). Dengan kata lain terdapat pengaruh yang signifikan five cone drill terhadap peningkatan kelincahan (agility) dan kecepatan (speed).
Berdasarkan analisis diatas dapat disimpulkan bahwa terdapat pengaruh yang signifikan pada latihan three cone drill, four cone drill, five cone drill terhadap peningkatan kelincahan (Agility) dan kecepatan (Speed). Latihan five cone drill lebih optimal dalam meningkatkan kelincahan (agility) dan latihan three cone drill lebih optimal dalam meningkatkan kecepatan (speed).