bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of the Cyclic Hardening Model on the Results of the Numerical Analysis of Fatigue Life on Example of the Compressor Blade
Authors: Bednarz Arkadiusz 
Published: November 2019

Abstract
The main goal of the presented work is to determine the impact of the cyclic hardening model on the numerical results of the ε-N fatigue test. As an object of study, compressor blade (from PZL-10W helicopter engine) was used. The examined blade was made of EI-961 alloy. In numerical analysis, a geometrical model of the blade with a preliminary defect was created. Geometrical defect – V-notch was created on the leading edge. This defect was introduced in order to weaken the structure of the element and the possibility of observing the crack initiation process (in experimental tests). Material data to ε-N analysis, based on Manson-Coffin-Basquin equation, were estimated for Mitchell’s model. This model was built based on strength data provided by the steel producer. Based on three different models of cyclic hardening (Manson, Fatemi, and Xianxin), a number of load cycles were calculated. Load cycle during numerical analysis was represented as resonance bending with an amplitude of displacement equal to A = 1.8 mm. Obtained results were compared with experimental data. Additionally, the analytical model of ε-N fatigue (depending on the cyclic hardening) was prepared. All the work carried out has been summarized by a comprehensive comparative analysis of the results. Obtained results and dependencies can be used in the selection of an appropriate model of cyclic hardening in further fatigue tests of many aerospace elements.
Impact of Processing Parameters on Surface Roughness and Strain Hardening of Two-Phase Stainless Steel
Authors: Dyl Tomasz Cyryl , Charchalis Adam , Stradomski Grzegorz , Rydz Dariusz 
Published: November 2019

Abstract
Products used in the construction of machines and shipbuilding as well as petrochemical industry, such as shafts, bars, pipes and the like from two-phase stainless steel are currently very popular. It is required that they meet certain quality criteria. They must be characterized by suitable properties of the surface layer to meet the requirements of potential buyers.
In the article impact of processing parameters on the degree of relative strain hardening and index of surface roughness reduction were presented. The burnishing process was carried out for two-phase stainless steel. Burnishing process of the shafts neck was performed using burnisher roller. The experimental research were obtained in the surface layer increase in hardness and the material ratio curve a convex shaped, which, taking into account the load capacity of the surface will be directly affected by its resistance to wear and corrosion. The experimental research by application of the burnishing process was made in the Laboratory of Production Engineering. After the studies it was found that the hardness of the surface layer and the roughness of the shaft necks an important influenced by technological parameters of processing (burnishing speed, feed rate and depth of burnishing). The objective of applying burnishing process may be, for example, the need to increase surface smoothness and dimensional accuracy of part.
ISM Code on Vessels With or Without Impact on a Number of Incidents Threats
Authors: Herdzik Jerzy 
Published: November 2019

Abstract
It was presented short analysis of connection ISM Code on vessels on the number of incidents threats. Introduced into force ISM Code in 1998 and 2002 (contained in chapter 9 of SOLAS Convention) as obligatory on vessels have had the aim of decreasing the number of injuries, serious injuries, fatalities, other incidents threats and total loses during vessel operation in maritime shipping. The next aim vicariously was improving the maritime safety and prevention of marine pollution from ships. As a result of ship-owner and crew requirements, it should eliminate from shipping market the bad and poor management systems of charterers or ship operators and improper qualified crewmembers. The company and the ship shall comply with the requirements of ISM Code and the company shall have the Document of Compliance (referred to in regulation 4 of ISM Code).
After about twenty years when ISM Code was in force some comparisons, conclusions and remarks were presented. It is observed the decreasing number of vessel total losses but other comparisons is not so clear due to different definitions of incident being obligatory in states of flag and different databases in the different Memoranda of Understanding. The influence of introducing ISM Code on maritime shipping is serious in good or bad matters (e.g. the increasing of bureaucracy).
6-Stroke Engine: Thermodynamic Modelling and Design for Testing
Authors: Nimsiriwangso Atip , Barnes Paul , Doustdar Omid , Wyszynski Miroslaw L. , Mohamed Gasim , Mohyeldin Maisara , Kowalski Miroslaw 
Published: November 2019

Abstract
In the study AVL BOOST™ is used to perform a thermodynamic simulation of a six-stroke engine, being built by a research team based in Saudi Arabia. The six-stroke cycle consists of a standard four-stroke Otto Cycle followed by a heat recovering steam expansion cycle. Water is injected into the hot combustion chamber towards the end of the Otto expansion stroke producing steam, which is used to perform work on a piston. This process produces power using waste heat and therefore increases the overall efficiency of the engine. The Robin EY28D engine, which is a single cylinder, four-stroke, gasoline engine was used for this simulation study. The engine was modelled and converted into six-stroke engine in AVL BOOST. The results show that six-stroke engine is more efficient than four-stroke engine. In six-stroke engine, the engine power is increased by 33.1% and brake specific fuel consumption (BSFC) is decreased by approximately 16%. Where emissions are concerned, Nitrogen Oxide (NOx) emission from six-stroke engine is reduced by 80%, while the Hydrocarbon (HC) emission increases by 85% compared with the original 4-stroke. Moreover, the most efficient camshaft was found and designed according to the most efficient valve profile for this engine, which is combination of 60CA° of valve duration and 10 mm of valve lifting.
Influence of Seawater Salinity on Corrosion of Hull Structural Steel
Authors: Zagożdżon Paweł , Starosta Robert 
Published: November 2019

Abstract
Hulls of ships are often made of steel, which are produced under the supervision of classification societies. Usually, the hull steel of ordinary strength category A is used for the ship's shell (the yield strength is 235 MPa and the impact strength 27 J at 20ºC). Vessels sail in sea areas with various levels of salinity and thus with different corrosiveness. The average salinity of the seas is taken as 3.5% content of sodium chloride. This article presents the results of corrosion tests of S235 JRG1 steel in an aqueous solution in which the mass fraction of sodium chloride was: 0.7%, 1.4%, 2.2%, 2.8%, 3.5% and 4.2%. Corrosion tests were performed using the potentiodynamic method. As parameters characterizing the corrosion properties of the tested steel, the corrosion current density and corrosion potential were assumed. Statistically significant influence of seawater salinity on the corrosion properties of hull structural steel of ordinary strength of category A was found. The highest value of the corrosion current density was observed in the solution containing 3.5% NaCl mass fraction was observed. In seawater with a sodium chloride content in the range of 0.7 to 3.5%, an increase in the value of the corrosion current density was observed, along with the increasing share of NaCl. In seawater with higher salinity, the corrosion rate was reduced. The corrosion potential of S235JRG1 steel decreases with the NaCl content in the corrosive solution. The susceptibility of this material to corrosion in seawater increased.
Radar Data Fusion in the Stradar System
Authors: Blok Marek , Kaczmarek Sylwester , Młynarczuk Magdalena 
Published: November 2019

Abstract
The main task of the Polish Border Guard is protection of the country’s border which requires utilization of multimedia surveillance systems automatically gathering, processing and sharing various data. The paper presents such a system developed for the Maritime Division of the Polish Border Guard within the STRADAR project and the problem of fusion of radar data in this system. The system, apart from providing communication means, gathers data from AIS, GPS and radar receivers: ARPA and SCANTER 2001. In the paper the concept of the radar data gathering in STRADAR system is provided with detailed presentation of radar servers, Radar INT modules and a reduplication (fusion) module and the proposition of the algorithm for radar data fusion.
Emulator and Simulator of Term a SCANTER and ARPA Radar Data Server
Authors: Sac Maciej , Kaczmarek Sylwester , Narloch Marcin 
Published: November 2019

Abstract
The software solutions presented in this paper generate real-time data compatible with ARPA radar standard as well as Terma SCANTER 2001 radar cooperating with Video Distribution and Tracking (VDT) server. Two different approaches to this problem are considered: emulation based on the data captured from real devices and simulation of objects on the sea. For both of them architecture, implementation details and functional test results are presented. The developed software will be used to test new functionalities of the multimedia surveillance system implemented for the Maritime Division of the Polish Border Guard within the STRADAR project.
Sistem Informasi Pemasaran Biduk Wisata Pulau Berbasis Web Mobile (Studi Kasus di Sungai Pisang, Padang, Sumatera Barat)
Authors: Amrina Elita , Kamil Insannul , Triha Hadigufri , Yulianto Ardhian Agung 
Published: November 2019

The geographical condition of Sungai Pisang Village located on the coastal fringe and not too far from the famous island tourism which potential in West Sumatera becomes an opportunity for the people of Sungai Pisang, especially the fishermen to increase their standard of living. But in reality, the outsiders in the Bungus area are more likely to take advantage of the opportunity because of their location close to the city center. The tourists can only be seen from afar by biduk fishermen of Sungai Pisang. Most tourists prefer to use Tour and Travel services from Bungus area. Biduk fishermen are only bringing few tourists to the island tour even though the price offered is much cheaper. Based on preliminary study, there are problems such as the lack of knowledge of the fisherman on the effective product marketing strategy. So far, there are no marketing tools to promote the transportation services of biduk fisherman to the island tourism in the Sungai Pisang broadly. Therefore, it is necessary to design a marketing information system for island tourism biduk. The marketing information system is a mobile web-based designed using PHP programming language and supported by the MySQL database. The information marketing system is expected to increase the number of tourists who use the island tourism biduk as an effort to increase the sustainable fishermen's economy.
PREDICTION OF WORK STRESS, LEADERSHIP QUALITY, MOTIVATION OF WORK AND ORGANIZATION CULTURE TO WORK SATISFACTION AND IMPACT ON TURNOVER INTENTION EMPLOYEES
Authors: Buda Prasada Pande Putu , Sawitri Ni Nyoman 
Published: November 2019

This research aimed to analyze and predict how work stress factors, quality of leadership, work motivation, organizational culture, and job satisfaction affect the turnover intention. Observations on this research were conducted on 150 employees in national companies engaged in satellite-based telecommunications. Data were collected by using questionnaire. The analysis method used Structural Equation Model (SEM) with Partial Least Square(PLS) as an analysis tool. The research results showed that work stress and job satisfaction influence on turnover intention while the quality of leadership, work motivation, and organizational culture have no effect on turnover intention. Suggestions for future research and the company are outlined in the closing section.
Penerapan Logika Matematika Dalam Ilmu Ekonomi Untuk Mendeskripsikan Permasalahan Korupsi
Authors: Susdarwono Endro Tri 
Published: November 2019

AbstractThe phenomenon of corruption can be analyzed using the principle of supply and demand. Corruption is synonymous with services traded between buyers and sellers, only that corruption is a product that harms anyone not involved in the transaction; in other words, corruption is built on negative externalities, which are losses that must be borne by others. The simplest argument for showing the economic costs of corruption is to associate corruption with wasted resources. This condition can be diagrammed through a "production possibility frontier" curve. Robert Klitgaard has proposed a slightly different analytical framework on efficient corruption. He sees from the standpoint of corruption eradication activities. The public (and the economy) will benefit from the eradication of corruption (or, from a smaller level of corruption). But, the eradication of corruption also requires costs. Based on the analysis of Tsebelis game theory, individuals face a decision tree consisting of the utility of success and failure of an action and the magnitude of the success and failure probability. Individuals will commit crime / corruption if the expected benefits of the action exceed the expected cost. This study wants to provide an overview of the application of mathematical logic in economics to describe the problems of corruption. Keywords: mathematical logic, corruption, negative externalities, production possibility frontier curve Abstrak Fenomena korupsi dapat dianalisis menggunakan prinsip supply and demand. Korupsi identik dengan jasa yang diperjualbelikan antara pembeli dan penjual, hanya saja, korupsi merupakan produk yang merugikan siapa pun yang tidak terlibat dalam transaksi; dalam kata lain, korupsi dibangun di atas negative externalities, yaitu kerugian yang harus ditanggung oleh orang lain. Argument paling sederhana untuk menunjukkan biaya ekonomi dari korupsi adalah mengaitkan korupsi dengan sumber daya yang terbuang. Kondisi ini bisa didiagramkan melalui kurva “batas kemungkinan produksi” (production possibility frontier). Robert Klitgaard pernah mengajukan kerangka analisis yang sedikit berbeda tentang korupsi yang efisien. Ia melihat dari sudut pandang kegiatan pemberantasan korupsi. Masyarakat (dan perekonomian) akan diuntungkan dengan adanya pemberantasan korupsi (atau, dari tingkat korupsi yang lebih kecil). Tapi, pemberantasan korupsi juga memerlukan biaya. Didasarkan pada analisis game theory Tsebelis individu menghadapi decision tree yang terdiri atas utilitas keberhasilan dan kegagalan suatu aksi dan besarnya probabilitas keberhasilan dan kegagalan tersebut. Individu akan melakukan tindak kejahatan/korupsi jika expected benefits dari tindakan tersebut melebihi expected costnya. Penelitian ini ingin memberikan gambaran penerapan logika matematika dalam ilmu ekonomi untuk mendeskripsikan permasalahan-permasalahan korupsi. Kata Kunci: logika matematika, korupsi, negative externalities, kurva batas kemungkinan produksi.
Identifikasi Etnomatematika Pada Masjid Mataram Kotagede Yogyakarta
Authors: Bakhrodin Bakhrodin , Istiqomah Umi , Abdullah Ahmad Anis 
Published: November 2019

Abstract Indonesia is a nation that is rich in cultural diversity, but the development of globalization has become a major challenge in maintaining its sustainability. Culture-based learning is one solution to this problem. One of the studies of learning mathematics based on culture is ethnomatematics. The purpose of this study is to identify ethnomatematics of historical sites or cultural heritage buildings in the Yogyakarta Kotagede Mataram Mosque which can be used as a medium of mathematics learning, especially in learning Geometry. This research is a descriptive study with ethnographic approach. Based on observations obtained several mathematical concepts contained in the parts of the Mataram Kotagede Yogyakarta mosque which are displayed in the form of a matrix. The results showed that the parts of the Yogyakarta Kotagede Mataram Mosque related to mathematical concepts include carvings (ornaments) on walls, pavilion buildings, roofs of mosques, drum which closely relates to geometrical concepts including flat building and building. Keywords: ethnomatematics, culture, mathematics Abstrak Indonesia merupakan bangsa yang kaya akan keanekaragaman budaya, namun perkembangan arus globalisasi menjadi tantangan utama dalam menjaga kelestariannya. Pembelajaran berbasis budaya menjadi salah satu solusi permasalahan ini. Salah satu kajian pembelajaran matematika berbasis budaya adalah etnomatematika. Tujuan dari penelitian ini untuk mengidentifikasi etnomatematika situs-situs sejarah atau bangunan cagar budaya yang terdapat di Masjid Mataram Kotagede Yogyakarta yang dapat dijadikan sebagai media pembelajaran matematika khususnya dalam pembelajaran Geometri. Penelitian ini merupakan penelitian deskriptif dengan pendekatan etnografi. Berdasarkan hasil observasi di peroleh beberapa konsep matematika yang terdapat pada bagian-bagian bangunan masjid Mataram Kotagede Yogyakarta yang ditampilkan dalam bentuk matriks. Hasil Penelitian menunjukkan bahwa bagian-bagian pada Masjid Masjid Mataram Kotagede Yogyakarta yang berkaitan konsep matematika antara lain ukiran-ukiran (ornamen) pada dinding, bangunan pendopo, atap masjid, beduk yang erat kaitanya dengan konsep geometri diantaranya bagun datar dan bangun ruang.Kata Kunci: etnomatematika, budaya, matematika
Peningkatan Ketrampilan Mahasiswa Melalui Kegiatan Praktikum Inkuiri Terbimbing pada Mata Kuliah Metode Numerik
Authors: Rakhmawati Nahlia , Hartiningrum Esty Saraswati Nur 
Published: November 2019

AbstractLack of student skills in operating mathematical software is one of the problems that must be resolved immediately. The purpose of this study is to improve student skills by using guided inquiry practicum in numerical methods courses. This research is a classroom action research conducted during 2 cycles. The research subjects were 2016C grade students whose taking numerical methods courses in the even semester 2018/2019. The improvement in skills is seen using 2 instruments, namely the group performance progress evaluation sheet and the oral test and practicum assessment rubric. The analysis shows the average group performance increased by 0.7667 or 34.79% from the average performance of the first cycle group of 2.233 to 3 in the second cycle. While the average score for the group practicum increased by 5 points from 70 in the cycle 1 to 75 in cycle 2. This result shows that the application of guided inquiry practicum methods can improve students' skills in numerical methods courses. Keywords: improvement, skills, guided inquiry practice. AbstrakKurangnya ketrampilan mahasiswa dalam mengoperasikan software matematika menjadi salah satu permasalahan yang harus segera diselesaikan. Tujuan dari penelitian ini adalah untuk meningkatkan ketrampilan mahasiswa dengan menggunakan metode praktikum inkuiri terbimbing pada mata kuliah metode numerik. Penelitian ini adalah penelitian tindakan kelas yang dilaksanakan selama 2 siklus. Subyek penelitian adalah mahasiswa kelas 2016C yang mengambil mata kuliah metode numerik pada semester genap 2018/2019. Peningkatan ketrampilan dilihat menggunakan 2 instrumen, yaitu lembar penilaian kemajuan kinerja kelompok dan rubrik penilaian tes lisan dan praktikum. Hasil analisa menunjukkan rata-rata kinerja kelompok mengalami peningkatan sebesar 0,7667 atau 34,79% dari rata-rata kinerja kelompok siklus 1 sebesar 2,233 menjadi 3pada siklus 2. Sedangkan rata-rata nilai praktikum kelompok meningkat sebesar 5 poin dari 70 pada siklus 1 menjadi 75 pada siklus 2. Hal ini menunjukkan penerapan metode praktikum inkuiri terbimbing dapat meningkatkan ketrampilan mahasiswa pada mata kuliah metode numerik. Kata Kunci:peningkatan, ketrampilan, praktikum inkuiri terbimbing.
Ações educativas em saúde bucal com crianças com câncer: relato de experiência
Authors: Celestino Júnior Aluísio Ferreira , Santos Milhomem Ana Carolina Carvalho dos , Santos da Silva Luísa Helena , Gomes Bruno da Gama , Guerra Rafaela Klautau , De Medeiros Rebeca Antunes , Bendelaque Farias Victor Cezar , Soares Miranda Yasmim Marçal , Oliveira Santos Nicole Pantoja de 
Published: November 2019

Objetivo: Relatar ações de educação em saúde bucal desenvolvidas em uma instituição de apoio a crianças e adolescente portadores de câncer em um município da Amazônia brasileira. Relato de experiência: estudo descritivo do tipo relato de experiência que consistiu na utilização de metodologia ativa (Metodologia da Problematização através do Arco de Marguerez). As atividades privilegiaram estratégias lúdicas, valorizando a experiência dos participantes, visando a incorporação de hábitos saudáveis diante de situações críticas de saúde e de morbidade bucal. Em que pese as dificuldades individuais no enfrentamento da neoplasia maligna, mudanças importantes de comportamento para a adoção de práticas adequadas de autocuidado foram desenvolvidas no sentido de entender o significado desses cuidados no contexto geral de saúde e incorporá-los em sua rotina. Considerações finais: Práticas de educação em saúde para grupos de alta vulnerabilidade devem valorizar estratégias que envolvam a participação efetiva. Nestas condições, o incentivo ao autocuidado e a compreensão da relação de causa e efeito que envolvem os determinantes de morbidade são relevantes. Realizar tudo isso em atmosfera agradável, permite o envolvimento e a compreensão de que prevenir comorbidades é concorrer para promoção em saúde, mesmo em condições gerais pouco satisfatórias.
Distal radial approach for neurointerventional diagnosis and therapy
Authors: Goland Javier , Domitrovic Luis , Doroszuk Gustavo , Garbugino Silvia , Ypa Paula 
Published: November 2019

Background:
The transradial approach results in fewer complications at the puncture site, lower hospital costs, and greater comfort for patients. The distal transradial approach (dTRA) adds some benefits over the conventional radial approach. The objective is to describe initial experience with distal radial approach technique and the results obtained for neuroendovascular diagnostic and therapeutic procedures.

Methods:
Description of distal radial approach technique and obtained data from the first 3 months experience using this approach as the first choice for neuroendovascular procedures in two neuroendovascular centers.

Results:
Of the total of 94 procedures performed during 3 months, 67 were diagnostic and 27 were therapeutic. Eleven (16%) of the diagnostic procedures were performed through the dTRA. Of the 27 embolizations, eight (30%) were done using this approach. Every distal radial approach that was performed for diagnosis and therapeutics was successful.

Conclusion:
Puncture of the radial artery within the anatomical snuffbox is a radial approach variation option for diagnostic and therapeutic neuroendovascular procedures.