bluuebunny/crossref_metadata_2025_split huggingface dataset:
Model literasi budaya masyarakat Tatar Karang di Kecamatan Cipatujah Kabupaten Tasikmalaya
Authors: Saepudin Encang , Damayani Ninis Agustini , Rusmana Agus 
Published: June 2018

Introduction. Limited strategy in the development of culture, become one of the weakness of Sundanese culture in quality of cultural. Thus, it is necessary to have a proper strategy of cultural development. This strategy should be developed on the basis of equity. This study aims to create a literacy model as part of cultural preservation. Data Collection Method. The study used descriptive method with a case study approach. The collecting data was conducted by using participatory observation, in-depth interviews. Our respondents were13 persons in total, consisting of managers of Saung Budaya Tatar Karang Cipatujah, community leaders, religious figures, and government representatives. Data Analysis. The data was analyzed using triangulation techniques through several stages; reduction, data display, and conclusion drawing/ verification. Results and Discussions. The results showed that the cultural literacy model developed in Sindangkerta area were based on Culture Experience and Culture Knowledge with the principles of mutual care, mutual education, and mutual guidance. Literacy development through Culture Experience was implemented by performing artistic, cultural, and ritual performances, while developing literacy through Culture Knowledge was created by building community reading places. Conclusions. The results concluded that the cultural literacy model has been able to build public awareness in preserving Sundanese culture. Further studies are suggested to test the effectiveness of cultural literacy models based on community participation.
Economic Statistics: How to Become Lean and Mean?
Authors: van de Ven Peter 
Published: June 2018

Abstract
The compilation of official statistics has changed dramatically over the past decades, and it will continue to change. These changes not only relate to user demands; also the source data and the means, in the sense of the technologies available for compiling statistics, have undergone and will continue to undergo significant changes. This article addresses the main developments and challenges in relation to the sources for compiling official statistics (input), the technologies for processing data (throughput), and the user demands (output) for official statistics. It is concluded that all these changes have, and continue to have, a significant impact on the way statistics are compiled, and the article puts forward a number of suggestions for the future direction of compiling official statistics.
Combining Multiple Methods in Establishment Questionnaire Testing: The 2017 Census of Agriculture Testing Bento Box
Authors: McCarthy Jaki S. , Ott Kathleen , Ridolfo Heather , McGovern Pam , Sirkis Robyn , Moore Danna 
Published: June 2018

AbstractThere are many methods that can be used to test questionnaires, each with its own strengths and weaknesses. The best approaches to questionnaire testing combine different methods to both broaden and strengthen the results. The US Census of Agriculture (COA) is conducted every five years and collects detailed information on agricultural production, inventories, practices, and operator demographics from agricultural establishments. Preceding each COA, evaluation and testing is done to test new items in the questionnaire and improve data quality for the subsequent COA. This article will describe how a multi-method approach, which we call Bento Box Testing, was applied to establishment questionnaire testing leading up to the 2017 COA. Testing included solicitation of expert opinion, historical data review, cognitive testing, a large scale field test, and qualitative follow-up interviews. The benefits of these testing methods, considerations for establishment survey testing, and how their results in combination provide a stronger evaluation are discussed.
Assessing Nonresponse in a Longitudinal Establishment Survey Using Regression Trees
Authors: Earp Morgan , Toth Daniell , Phipps Polly , Oslund Charlotte 
Published: June 2018

AbstractThis article introduces and discusses a method for conducting an analysis of nonresponse for a longitudinal establishment survey using regression trees. The methodology consists of three parts: analysis during the frame refinement and enrollment phases, common in longitudinal surveys; analysis of the effect of time on response rates during data collection; and analysis of the potential for nonresponse bias. For all three analyses, regression tree models are used to identify establishment characteristics and subgroups of establishments that represent vulnerabilities during the data collection process. This information could be used to direct additional resources to collecting data from identified establishments in order to improve the response rate.
Nowcasting Austrian Short Term Statistics
Authors: Fröhlich Markus 
Published: June 2018

Abstract
Early estimates for Austrian short term indices were produced using multivariate time-series models. The article presents a simulation study with different models (vector error correction models, vector autoregressive models in levels – both with unadjusted and seasonally adjusted time-series) used for estimating total turnover, production, etc. In a preliminary step, before time-series were provided for nowcasting, the data had to undergo an editing process. In this case a time-series approach was selected for data-editing as well, because of the very specific structure of Austrian enterprises. For this task basically the seasonal adjustment program X13Arima-Seats was used for identifying and replacing outlying observations, imputation of missing values and generating univariate forecasts for every single time series.
Small Area Estimation with a Lognormal Mixed Model under Informative Sampling
Authors: Zimmermann Thomas , Münnich Ralf Thomas 
Published: June 2018

Abstract
The demand for reliable business statistics at disaggregated levels, such as industry classes, increased considerably in recent years. Owing to small sample sizes for some of the domains, design-based methods may not provide estimates with adequate precision. Hence, modelbased small area estimation techniques that increase the effective sample size by borrowing strength are needed. Business data are frequently characterised by skewed distributions, with a few large enterprises that account for the majority of the total for the variable of interest, for example turnover. Moreover, the relationship between the variable of interest and the auxiliary variables is often non-linear on the original scale. In many cases, a lognormal mixed model provides a reasonable approximation of this relationship. In this article, we extend the empirical best prediction (EBP) approach to compensate for informative sampling, by incorporating design information among the covariates via an augmented modelling approach. This gives rise to the EBP under the augmented model. We propose to select the augmenting variable based on a joint assessment of a measure of predictive accuracy and a check of the normality assumptions. Finally, we compare our approach with alternatives in a model-based simulation study under different informative sampling mechanisms.
Population Size Estimation Using Multiple Incomplete Lists with Overcoverage
Authors: Di Cecco Davide , Di Zio Marco , Filipponi Danila , Rocchetti Irene 
Published: June 2018

AbstractThe quantity and quality of administrative information available to National Statistical Institutes have been constantly increasing over the past several years. However, different sources of administrative data are not expected to each have the same population coverage, so that estimating the true population size from the collective set of data poses several methodological challenges that set the problem apart from a classical capture-recapture setting. In this article, we consider two specific aspects of this problem: (1) misclassification of the units, leading to lists with both overcoverage and undercoverage; and (2) lists focusing on a specific subpopulation, leaving a proportion of the population with null probability of being captured. We propose an approach to this problem that employs a class of capturerecapture methods based on Latent Class models. We assess the proposed approach via a simulation study, then apply the method to five sources of empirical data to estimate the number of active local units of Italian enterprises in 2011.
The Czech Singers Critical of Islam and Refugees on Facebook in the Age of the “Migration Crisis” (2015–2017)
Authors: Rosůlek Přemysl 
Published: June 2018

Abstract
The article analyses through qualitative textual analysis and manual coding Czech singers known for their critical attitudes to the “migration crisis”as presented on their Facebook walls (2015–2017). This major focus on the singer’s Facebook posts was reinforced by the analysis based on the two theoretical concepts – celebritisation of politics and post-truth politics. In sum, analyses across theoretical approaches found that a majority of singers – although not all of them – have been judging the problem through the lenses of a black -and -white “Clash of Civilizational” approach. Only a few singers run for political office and political agenda-setting linked to the “migration crisis” was not frequented as expected. Many of the investigated singers expressed support or political endorsement to xenophobic and anti-islamic political parties. Although the “Russian footage” could be denied, the style and characters of communication via Facebook revealed that in many aspects the singers’ strategy is in consonance with current Kremlin propaganda.
Automatic Watercraft Recognition and Identification on Water Areas Covered by Video Monitoring as Extension for Sea and River Traffic Supervision Systems
Authors: Wawrzyniak Natalia , Stateczny Andrzej 
Published: June 2018

Abstract
The article presents the watercraft recognition and identification system as an extension for the presently used visual water area monitoring systems, such as VTS (Vessel Traffic Service) or RIS (River Information Service). The watercraft identification systems (AIS - Automatic Identification Systems) which are presently used in both sea and inland navigation require purchase and installation of relatively expensive transceivers on ships, the presence of which is not formally required as equipment of unconventional watercrafts, such as yachts, motor boats, and other pleasure crafts. These watercrafts may pose navigation or even terrorist threat, can be the object of interest of the customs, or simply cause traffic problems on restricted water areas. The article proposes extending the traffic supervision system by a module which will identify unconventional crafts based on video monitoring. Recognition and identification will be possible through the use of image identification and processing methods based on artificial intelligence algorithms, among other tools. The system will be implemented as independent service making use of the potential of SOA (Service Oriented Architecture) and XML/SOAP (Extensible Markup Language/Simple Object Access Protocol) technology.
A Framework of A Ship Domain-Based Near-Miss Detection Method Using Mamdani Neuro-Fuzzy Classification
Authors: Szłapczyński Rafał , Niksa-Rynkiewicz Tacjana 
Published: June 2018

Abstract
Safety analysis of navigation over a given area may cover application of various risk measures for ship collisions. One of them is percentage of the so called near-miss situations (potential collision situations). In this article a method of automatic detection of such situations based on the data from Automatic Identification System (AIS), is proposed. The method utilizes input parameters such as: collision risk measure based on ship’s domain concept, relative speed between ships as well as their course difference. For classification of ships encounters, there is used a neuro-fuzzy network which estimates a degree of collision hazard on the basis of a set of rules. The worked out method makes it possibile to apply an arbitrary ship’s domain as well as to learn the classifier on the basis of opinions of experts interpreting the data from the AIS.
Impact Pressure Distribution on a Monopile Structure Excited by Irregular Breaking Wave
Authors: Veic Duje , Sulisz Wojciech 
Published: June 2018

Abstract
The problem of impact pressure distribution on a monopole structure excited by irregular breaking waves is investigated. The analysis is performed by applying a numerical model that combines potential flow model with a Navier-Stokes/VOF solution. The temporal pressure distribution is analysed for two breaking wave cases characterized by the significant difference in the steepness of the wave front. The peak impact pressures are observed in the region below the overturning wave jet where the pressure increases rapidly resulting in a peak value of the slamming coefficient equal to Cs=2π. The vertical load distribution provided by the derived model is more realistic than a rectangular shape distribution applied in engineering practice. This is because the vertical load distribution strongly depends on breaking wave shape and it is difficult to uniquely approximate such a load distribution by a rectangle.
Vertical Motions Damping Model Test of a Lifeboat Lowered Onto a Flat Sea Surface
Authors: Kniat Aleksander , Dymarski Paweł 
Published: June 2018

Abstract
The article presents the experiment’s results of the lifeboat model lowered with an initial speed and then released to fall onto a flat water surface. The purpose of the research is to determine the trajectory of the vertical boat motion and describe it with a mathematical model. This is closely related to determining the damping factor since the vertical motion is damped and the lifeboat gets balanced and stops moving after some time. The procedure of selecting parameters in the mathematical model to adjust to the results of the experiment was described in details. The summary describes the imperfections of the presented damping model and their probable causes.
Methods of Determination of Frictional Resistance for Prediction of Total Resistance of Inland Waterway Vessels
Authors: Kulczyk Jan 
Published: June 2018

Abstract
In the present paper presented are the results of prediction of total resistance of inland waterway vessels based on model test data. In scaling the resistance from model to full scale the extrapolation with two-dimensional frictional resistance formulation (without form factor) was applied, combined with different methods of determination of frictional (viscous) resistance coefficient. There were used the equations that include the effect of water depth, with and without account for pressure gradient. It was shown that limited depth of water substantially affects the frictional resistance. The results of example calculations are compared to resistance prediction made using the ITTC 1957 model-ship correlation line. Example calculations take into account the limited depth of water. Depending on the applied method of determination of frictional resistance coefficient the resultant total resistance of inland waterway vessel is higher or lower than the resistance based on the ITTC 1957 correlation line. The effect of water depth depends on the ratio of water depth to ship draught (h/T), on ship speed, and on the composition of a convoy. The extrapolation of resistance was made without including the form factor. Computations are made based on model test data for an inland waterway cargo vessel, for a kombi-type convoy of an inland waterway cargo vessel and a dumb barge, and for a convoy of two dumb barges without a pushboat.
Longitudinal Motion Due to Action of Tunnel Thrusters
Authors: Reichel Maciej 
Published: June 2018

Abstract
Tunnel thrusters are propulsion and active control devises that provide a side force, or transverse thrust, to support mooring operations or position keeping. They shorten the time of manoeuvring, reduce the cost of towage and since inception, manoeuvrability specifically in ports has become a lot easier. Tunnel thrusters can either be operated manually or with the help of Dynamic Positioning systems which makes it even more efficient.
Theoretically, the transverse force due to tunnel thruster action should generate only lateral and rotational motion. Therefore, it is typical and a common practice during manoeuvring simulations that the longitudinal motion due to the action of tunnel thrusters is neglected. Nevertheless, the experience of masters and pilots shows that some longitudinal motion due to the action of tunnel thrusters appears.
This paper shows some examples of turning manoeuvres carried out with bow thrusters only, i.e. no additional control devices or tug assistance have been used. The manoeuvres have been carried with minimal possible initial longitudinal nor lateral speed. Model tests have been done with the use of large manned models of VLCS, PCTC and LNG carrier, which differ in hull shape, dimensions and shape coefficients.
Results obtained from the tests confirm that the motion caused by bow thruster besides rotational and lateral motion consists additionally of longitudinal motion. Analysis of the combination of motions due to the action of tunnel thrusters have been done and some rationale for this phenomenon has been presented. Additionally a short analysis of position of pivot point during tunnel thruster test has been carried out.
Numerical Simulation of Cushioning Problem for Blunt Bodies Using Boundary Element Method
Authors: Barjasteh Mojtaba , Zeraatgar Hamid 
Published: June 2018

Abstract
Induced air pressure and resulting free surface profile due to air cushioning layer is studied. The study is mainly focused on 2D blunt circular bodies with constant downward speed. The problem is first solved for the air flow between the body and the free surface of the water. Then the results are employed to solve the problem for the water problem, numerically. Both air and water problem are assumed to be governed by Laplace potential equation. Depending on the induced pressure and velocity of the escaping air flow from cushioning layer, compressibility of the air is also included in the modeling. Gravitational acceleration is also included in the model. An iterative boundary element method is used for numerical solution of both air and water problems. Instantaneous pressure distribution and free surface profile are evaluated for different bodies. The results of calculation for large blunt bodies show that inviscid potential method can fairly approximate the problem for large blunt bodies. Additionally, the behavior of the air pressure for the very blunt body is impulsive and the magnitude of the peak pressure is in order of impact pressure of water entry. The obtained results are compared with analytical method. The comparison shows that as the bluntness of a body increases, the better agreement is concluded.
Parametric Comparison of Rectangular and Circular Pontoons Performance as Floating Breakwater Numerically
Authors: Tabatabaei Seyyed Mohammad Reza , Zeraatgar Hamid 
Published: June 2018

Abstract
Rectangular and circular pontoons are one of the most widely cross-sections used as floating breakwaters (FB). Although, there are several articles on comparison of behavior of rectangular and circular floating breakwaters however, the Authors try to show some details of difference between these two types where they have not been addressed before. To do so, transmission coefficient (Ct), as a measure of merit, of similar rectangular and circular sections is numerically compared. A computer code is developed for two-dimensional hydrodynamic analysis of floating breakwater based on diffraction theory in frequency domain in regular waves with any configuration of mooring line. The numerical method is the finite element method and validated by comparing with experimental and numerical results. Three types of rectangular sections are defined equivalent to circular section and a numerical comparison is made between 100 similar sections. The Ct versus wave frequency has been considered in detail and three new points called LMinF, LMaxF and LMaxCt are introduced. It has been shown that LMinF and LMaxF of circular section are greater and LMaxCt is much smaller than equivalent rectangular section. The LMaxCt of both sections are very dependent to new non-dimensional parameter B/D (Breadth/Draft). Although, rectangular sections are more common for floating breakwater, however the results of this study show that possibility of using circular sections must be also considered.
Laboratory Test Rig for Examining Aggregate Mining from Seabed Using the Airlift Method
Authors: Dymarski Czesław , Pająk Tomasz 
Published: June 2018

Abstract
The use of the Airlift method for transporting the mined aggregate from the seabed to the deck of the mining ship is an alternative for presently used solutions, such as suction pumps or scoop transport for instance. Building the laboratory test rig was preceded by tests in natural conditions. The rig was designed in such a way as to model these conditions as close as possible, and to have potential for further development.
Mobile Laser Scanning Calibration on A Marine Platform
Authors: Szulwic Jakub , Tysiąc Paweł 
Published: June 2018

Abstract
The article describes the method of calibration of the Riegl VMZ-400 mobile scanning system on a floating platform and an experiment aimed at conducting measurements from a previously calibrated instrument. The issue of factors affecting the quality of measurements was discussed.
Mobile laser scanning is an increasingly popular measurement solution, but it is still innovative on a European scale. The use of a floating platform is unique on a national scale. The presented solution is the result of the work of the Gdańsk University of Technology team on the development of the measurement procedure for scanning land from the sea and the river.
The Influence of Water and Mineral Oil On Mechanical Losses in the Displacement Pump for Offshore and Marine Applications
Authors: Śliwiński Paweł 
Published: June 2018

Abstract
In this paper mechanical losses in a positive displacement pump supplied with water and mineral oil (two liquids having significantly different viscosity and lubricating properties) are described and compared. The experimental tests were conducted by using a prototype satellite pump of a special design. The design of the satellite pump is presented in the article. The pump features and a non-circular tooth working mechanism was developed to work with both water and mineral oil. The sources of mechanical losses in such pump are also characterized in this paper. On this basis, a mathematical model of the losses has been developed and presented. The results of the calculation of mechanical losses according to the model are compared with the results of the experiment. The experimental studies have shown that the mechanical losses in the water pump are even 2.8 times greater than those in the oil pump. It has been demonstrated that the mathematical model well describes the mechanical losses both in the water pump and the oil pump. It has been found that the results from the loaded pump simulation (at Δp=25MPa) differ from the results of the experiment by no more than 5% both for oil and water.