bluuebunny/crossref_metadata_2025_split huggingface dataset:
Developing PISA-Like Mathematics Problems Using Indonesian Food Context
Authors: Sulistiani L , Zulkardi  
Published: October 2019

Abstract
This study aims to generate the valid and practical PISA-like mathematics problems on uncertainty and data using Indonesian food context. It also aims to see the potential effects of the problems towards the high school students’ mathematical ability. This study used a design research methodology with the type of development study which was divided into two stages, namely preliminary stage and formative evaluation stage. This study produced valid and practical PISA-like mathematics problems on uncertainty and data content which have a potential effect on the senior high school students’ mathematical literacy ability. The validity was determined based on the expert review, while the practicality was determined based on one-to-one and small group assessment. Based on the students answer, it was found that the problems had potential effects that arouse the ability, communication, reasoning and argument, representation and devising strategies for problem-solving.
LINTAS-BD 1.2: Modeling and simulation traffic of Bandung City using SimEvents MATLAB
Authors: Harahap E , Badruzzaman F H , Permanasari Y , Fajar M Y , Kudus A 
Published: October 2019

Abstract
Traffic is a very vital medium for various means of land transportation that connects various locations and even large cities. The smooth traffic of a city is one of the performance parameters of the local government. Furthermore, the smooth traffic determines the great development of economic, social, educational and technology. As the increasing level of civilization development and also the population, traffic becomes more congested and becomes a big problem that is very difficult to avoid. In this study, we proposed a traffic simulator system LINTAS-BD 1.2, or commonly called as “LINTAS” which served as a tool to solve traffic congestion problems. Various methods and traffic engineering designs can be simulated first through the LINTAS system, before they are actually implemented on the road. The benefit of the LINTAS is to evaluate and simulate traffic conditions based on the design of a particular method or traffic engineering. Furthermore, through simulations, it can be known and tested analytically about the level of accuracy, efficiency, and effectiveness of the method and design. Through the simulation, the most appropriate traffic management method can be found, so that the problem of traffic congestion can be solved. The model and the design system of LINTAS is the arrangement and integration of various blocks or modules included: roads, traffic light, arrival of vehicles, queues, servers, and various obstacles such as intersections, terminals, markets, branches, etc. These various blocks are then combined into a single unit application as a simulator. The objective of this research is to compile a simulation application (traffic simulator) that can be used as a tool to accurately predict traffic situations, and as a medium for testing traffic engineering. The LINTAS simulator is created using the SimEvents toolbox and runs on the MATLAB-Simulink software. The LINTAS system is compiled based on Mathematics, specifically the Queueing Theory.
The effect of 5E learning cycle with metacognitive techniques and mathematical prior ability on mathematical creative thinking skills
Authors: Runisah  
Published: October 2019

Abstract
The purpose of this study is to investigate the role of the 5E Learning Cycle with Metacognitive Techniques (LCM) and Mathematical Prior Ability (MPA) on Mathematical Creative Thinking Skills (MCTS). The subject of the study was 173 eighth grade students from high level school and medium level school in Indramayu, Indonesia. This study used the quasi-experimental method with a pretest-posttest control group design. At each school level, three classes were used in this study, one class used the 5E Learning Cycle with Metacognitive Techniques (LCM), and the other class used the 5E Learning Cycle (LC) and Conventional Learning (CL). The students were classified into three levels based on Mathematical Prior Ability (high, medium, and low). The instruments used are MPA test and MCTS test. The study reveals that in terms of overall and in every MPA level, LCM gives better influence on students’ MCTS than LC and CL, LC gives better influence on students’ MCTS than CL. There is an interaction effect between the learning model and MPA level toward the enhancement of students’ MCTS.
Creative thinking ability on the integrating mathematical habits of mind in missouri mathematics project learning
Authors: Mellawaty  , Sudirman  , Waluya St B , Rochmad  
Published: October 2019

Abstract
The method in this study, Mixed Method Design with concurrent embedded strategy. This research was conducted mathematical creative thinking skills of students class VII-B of Indramayu State Middle School 1, Academic Year 2018/2019. Sampling technique used snowball sampling technique.There were three stages in this research, the first was designing learning process stage that consisted of syllabus, lesson plan, learning syntax and expert validated test items. The second was the implementation. It was conducted to see the students’ respond and activity during the learning process. The third was evaluation stage. This was conducted to know the learning effectiveness. The result, it was obtained that (1) the learning design integrated Mathematical Habits of Mind (MHM) and Missouri Mathematic Project (MMP) consists of syllabus, lesson plan, learning syntax, students’ worksheet and TKBKM were valid; (2) The respond of students and teacher were 82,9% good and happy to involve in the process of learning design that integrates Mathematical Habits of Mind (MHM) and Missouri Mathematic Project (MMP); (3) the learning that integrates Mathematical Habits of Mind (MHM) with Missouri Mathematics Project (MMP) learning is effective in improving mathematical creative thinking students with moderate categories.
Numerical simulation on the effect of damper opening angle in square duct 90-degree elbow
Authors: Hakim L , Asmorowati E T 
Published: October 2019

Abstract
New results in the form of velocity distribution in the square duct elbow 90-degree have been obtained from the simulation results. The flow characteristics through which are analyzed using commercial CFD software. The Reynolds averaged Navier Stokes (RANS) equation will be solved numerically using the finite difference method and using the SIMPLE algorithm. The test model to be used in this study is square duct which is installed in the inlet section 90-degre elbow with a double damper placed at a distance of x / Dh = 2 after out late elbow. In this paper, the effect of the damper opening angle on the velocity profile on the 90-degree square duct is simulated in simulation at the opening angle of 30-degree clockwise direction and 30-degree counter-clockwise direction. The simulation results in the form of velocity profile distribution in each position are shown through the graph and obtained a maximum velocity magnitude value of 26.143 m/s which is exactly the place of the damper.
A Didactical Design of Problem Based Learning Teaching Materials to Overcome Students Learning Obstacles on Calculus
Authors: Fitrianna A Y , Yuliani A , Yuspriyati D N 
Published: October 2019

Abstract
This study aims to develop a didactical design for Calculus subject teaching materials using Problem Based Learning. The research method used in this study was didactical design research. The research steps taken are didactic situation analysis, to see the student learning obstacle that appears in calculus courses. The subjects taken were students who had received Calculus I courses, namely 5 people in class 2015, 5 people in 2016, and 5 people in 2017. The results of the didactic situation analysis were difficulties in understanding students in the initial calculus material, so the special emphasis was placed on - Initial calculus material with problem-based learning. Based on the results of the learning obstacle, a problem-based calculus teaching material was developed and validated. Metapedidaktic analysis, at this stage a limited trial was conducted on students who were taking calculus courses in class 2018. Retrospective analysis revised teaching materials and linked the learning obstacle with student responses and observations during learning. The results of this study are learning tools used in calculus learning with problem-based learning. The didactic design developed received positive responses from students.
The use of ASSURE learning design to improve mathematical problem solving ability and self-determination of junior high school students
Authors: Zanthy L S , Chotimah S , Sari I P 
Published: October 2019

Abstract
The ability to solve problems and self-determination of junior high school students in West Bandung Regency is still low, so various alternative solutions are needed to overcome them. This study aims to determine the improvement of problem solving ability and self-determination of class VIII students by using ASSURE design (Analyzing student characteristics; State standards and goals; Choosing methods, media and materials; Utilizing media and materials; Requiring student participation; and Evaluating and revising) based on his learning style. This study used an experimental method and one group pretest post-test design. The sample is class VIII students selected by purposive sampling at one of the junior high schools in West Bandung Regency. The instrument of this study used a descriptive test of 5 questions about problem solving ability and 30 scales of student self-determination attitudes. Based on the results of the study, it can be concluded that: Improving problem solving ability and student self-determination using ASSURE learning design is suitable for all types of student learning styles (auditory, visual and kinaesthetic).
Surface modification of metal oxide films by gold nanoparticles
Authors: Rehacek V , Hotovy I , Predanocy M , Vojs M , Marton M 
Published: October 2019

Abstract
The goal of this contribution is to develop a process the most appropriate for the deposition of colloid gold nanoparticles on the surfaces of metal oxides (TiO2, NiO) prepared on silicon and/or alumina substrates. Important procedures such as hydrophilization of metal oxide surface and its subsequent functionalization with a silane coupling agent 3 mercapto propyl tri metoxy silane (MPTMS) were examined so as to reach a metal oxide surface with the most satisfying properties for immobilization of gold nanoparticles having a uniform and dense distribution. TiO2 nanotips prepared by reactive ion etching of oxide surface covered with selfmask gold nanoparticles as well as improved hydrogen gas sensing properties of the NiO film covered by gold nanoparticles are demonstrated.
Investigation of palladium current collectors for vertical graphene-based microsupercapacitors
Authors: Vyas A , Cornaglia F , Rattanasawatesun T , Li Q , Haque M , Sun J , Kuzmenko V , Smith A D , Lundgren P , Enoksson P 
Published: October 2019

Abstract
As microsystems are reduced in size and become integrated in the Internet of Things (IoT), they require an adequate power supply which can be integrated at the same size scale. Microsupercapacitors (MSCs), if coupled with on-chip harvesters, can offer solutions for a self-sustaining, on-chip power supply. However, the implementation of reliable MSC wafer-scale production compatible with CMOS technology remains a challenge. Palladium (Pd) is known as a CMOS compatible metal and, in this paper, we investigate the use of Pd as a contact material for vertical graphene (VG) electrodes in wafer-scale MSC fabrication. We show that a Ti diffusion barrier is required to prevent short-circuiting for the successful employment of Pd contacts. The fabricated MSCs demonstrate a capacitance of 1.3 μF/cm2 with an energy density of 0.42 μJ/cm2. Thus, utilization of a Ti diffusion barrier with a CMOS compatible Pd metal electrode is a step towards integrating MSCs in semiconductor microsystems.
Investigating the plasma properties of a Xe-microplasma thruster
Authors: Seton R , Sturesson P , Persson A 
Published: October 2019

Abstract
By combining optical emission spectroscopy (OES) and Langmuir probes, the plasma properties of a Xenon-microplasma thruster have been investigated. Using IV-curve analysis the properties of the plasma have been determined and correlated to the power fed into it. Satisfactory agreement has been obtained with the results of OES measurements (line-ratio technique) and shock-cell distance calculations. While the fuel consumption of the thruster decreased very linearly with the power fed to the plasma, the plasma properties was found to have behave in a more complex way. In the studied power range, the density ratio between at least two ions, with upper configurations 5p5(2P°3/2)7p and 5p5(2P°3/2)6p, strongly indicated that the ionization processes of the former was favourable in terms of thrust for the geometry of the nozzle. This was supported electron temperature measurements from IV-curves.
Fabrication of boron doped diamond cantilevers by means of dry ICP etching
Authors: Vojs M , Marton M , Jančo M , Behúl M , Řeháček V , Michniak P , Držík M , Redhammer R 
Published: October 2019

Abstract
This paper is focused on the preparation of boron doped diamond (BDD) cantilevers for MEMS applications. Hot filament CVD diamond deposition technique was used for preparation of highly boron doped thin film. The fabrication process consisted only of dry etching steps and masking process, no wet etching of substrate was used. Therefore, it was necessary to optimize both anisotropic and isotropic etching to release the cantilever structure from silicon substrate. Doped diamond cantilevers were etched by reactive ion etching using inductively coupled plasma (ICP RIE) through aluminum etching masks. The optimal properties of fabrication process led to high quality MEMS structures. The resulting cantilevers were investigated by scanning electron microscopy (SEM) and laser vibrometer system. Finally, we demonstrate a BDD cantilever (5 μm width) with the main resonant frequencies at 22.2 kHz, 46.6 kHz, 52.2 kHz and 65.6 kHz.
Fabrication of nanocones by RIE on GaP
Authors: Eliáš P , Haščík Š 
Published: October 2019

Abstract
GaP(111)B substrate was etched through colloidal self-assembled randomly distributed 30nn Au nanoparticles by RIE. We looked into how GaP nanocones (NCs) formed with respect to the chamber pressure and etching duration, and the use of electron cyclotron resonance (ECR) RIE mode. The NCs were steep-walled in RIE, and those produced by ECR RIE were bell shaped. The NC length increased with etching duration for the same chamber pressure. The NCs were shorter and slightly steeper with decreased pressure for the same etching duration. The NCs that had the Au particles eradicated during the etching process became blunt and were gradually diminished.
A Systematic Literature Review and Head-to-Head Comparison of Social Support and Social Constraint in Relation to the Psychological Functioning of Cancer Survivors
Authors: Rivera Rivera Jessica N , Burris Jessica L 
Published: October 2019

Abstract

Background
Quality of life is a multidimensional concept that includes perceptions of one’s physical, psychological, social, and spiritual functioning, all of which are theorized to be interdependent. The focus of this study is social functioning, which itself is a multidimensional concept that includes social support and social constraint among other things. In cancer survivors, social support receives most of the research attention, but social constraint may have a stronger influence on quality of life.

Purpose
This systematic literature review evaluates which aspect of social functioning—social support or social constraint—has a stronger relationship with the psychological functioning of cancer survivors.

Methods
The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed in the identification and review of 32 independent records. Multiple measures of social support and social constraint were used across studies, with most having adequate psychometric properties. Psychological outcomes were divided into (a) general distress, (b) cancer-specific distress, (c) general well-being, and (d) cancer-specific well-being.

Results
For general and cancer-specific distress, social constraint exhibited a larger association with distress than social support. Similarly, for general well-being, most studies reported a stronger association with social constraint than social support. For cancer-specific well-being, the opposite was true such that associations were stronger for social support than social constraint.

Conclusions
Results highlight the importance of considering social constraint when examining quality-of-life outcomes like psychological distress and well-being. Findings support social constraint as a target in interventions to reduce cancer survivors’ distress, while social support could be considered in attempts to promote cancer-specific well-being.
The Changing Science of HIV Epidemiology in the United States
Authors: D’Souza Gypsyamber , Golub Elizabeth T , Gange Stephen J 
Published: October 2019

AbstractIn 1984, a large prospective study of the natural history of human immunodeficiency virus (HIV) infection, the Multicenter AIDS Cohort Study (MACS), was established; 10 years later, the Women’s Interagency HIV Study (WIHS) was launched. Motivated by the merger and redesign of these long-standing HIV cohort studies in 2019, we review ways in which HIV epidemiology in the United States has transformed over the lives of these studies and how this evolution has influenced planning for enrollment and follow-up. We highlight changes that have occurred in the 3 major domains that are central to epidemiologic science: changes to key populations at highest risk for HIV, refinements in measurement and shifts in the outcomes of interest, and a new era in the tools and approaches that epidemiologists use to synthesize evidence from measurements made on populations. By embracing foundational principles with modern methods, the epidemiologic approach of analyzing the causes and distributions of diseases in contemporaneous populations will continue to advance HIV science over the next decade.
FluReassort: a database for the study of genomic reassortments among influenza viruses
Authors: Ding Xiao , Yuan Xuye , Mao Longfei , Wu Aiping , Jiang Taijiao 
Published: October 2019

AbstractGenomic reassortment is an important genetic event in the generation of emerging influenza viruses, which can cause numerous serious flu endemics and epidemics within hosts or even across different hosts. However, there is no dedicated and comprehensive repository for reassortment events among influenza viruses. Here, we present FluReassort, a database for understanding the genomic reassortment events in influenza viruses. Through manual curation of thousands of literature references, the database compiles 204 reassortment events among 56 subtypes of influenza A viruses isolated in 37 different countries. FluReassort provides an interface for the visualization and evolutionary analysis of reassortment events, allowing users to view the events through the phylogenetic analysis with varying parameters. The reassortment networks in FluReassort graphically summarize the correlation and causality between different subtypes of the influenza virus and facilitate the description and interpretation of the reassortment preference among subtypes. We believe FluReassort is a convenient and powerful platform for understanding the evolution of emerging influenza viruses. FluReassort is freely available at https://www.jianglab.tech/FluReassort.
Eagle: multi-locus association mapping on a genome-wide scale made routine
Authors: George Andrew W , Verbyla Arunas , Bowden Joshua 
Published: October 2019

Abstract

Motivation
We present Eagle, a new method for multi-locus association mapping. The motivation for developing Eagle was to make multi-locus association mapping ‘easy’ and the method-of-choice. Eagle’s strengths are that it (i) is considerably more powerful than single-locus association mapping, (ii) does not suffer from multiple testing issues, (iii) gives results that are immediately interpretable and (iv) has a computational footprint comparable to single-locus association mapping.

Results
By conducting a large simulation study, we will show that Eagle finds true and avoids false single-nucleotide polymorphism trait associations better than competing single- and multi-locus methods. We also analyze data from a published mouse study. Eagle found over 50% more validated findings than the state-of-the-art single-locus method.

Availability and implementation
Eagle has been implemented as an R package, with a browser-based Graphical User Interface for users less familiar with R. It is freely available via the CRAN website at https://cran.r-project.org. Videos, Quick Start guides, FAQs and Demos are available via the Eagle website http://eagle.r-forge.r-project.org.

Supplementary information
Supplementary data are available at Bioinformatics online.
Investigating the Movement Components of Host Preference in a Highly Mobile Insect Herbivore, Nephotettix cincticeps (Hemiptera: Cicadellidae)
Authors: Gray Hannah L , Andow David A , Kiritani Keizi 
Published: October 2019

Abstract
Effective insect management strategies require a firm understanding of the factors determining host preference, particularly in highly mobile insect herbivores. Host preference studies commonly employ average or first position as a proxy for preference. Yet few studies have explored host preference in relation to transitory attraction and leaving rates, yet these are both components of host plant selection. We investigated the transitory dynamics of preference by the green rice leafhopper, Nephotettix cincticeps (Uhler) (Hemiptera: Cicadellidae) by conducting experiments on groups of females, males, or mixed-sex leafhoppers, and recording their position over time between low-N and normal-N rice plants. Utilizing a log-linear model and variants of a biostatistical model we used these positional data to extract attraction, leaving and tenure rates to better understand the process of host-plant selection. We found a general preference for normal-N over low-N plants at equilibrium. However, between sexes there was variation in the relative significance of attraction or leaving rates on that preference. Female leafhoppers were more attracted to host plants with higher nitrogen content. Male leafhoppers were less discriminate in their initial attraction to hosts but left low-N hosts at a faster rate. Whereas estimated tenure times on both normal- and low-N plants exceeded transmission times for the leafhopper-transmitted rice dwarf virus, longer tenure on normal-N plants likely increases the likelihood of virus acquisition from these plants. Our findings support previous recommendations that growers can mitigate the risks of leafhopper damage and pathogen transmission by optimizing their application of nitrogenous fertilizers.