bluuebunny/crossref_metadata_2025_split huggingface dataset:
Edu-Game media based on Android to learn Least Common Multiplication (LCM) and Great Common Divisor (GCD) for the 4th graders
Authors: Rahmawati I , Ayun N Q , Mariana N , Indrawati D , Wiryanto W , Budiyono B , Istianah F 
Published: August 2021

Abstract
Learning mathematics for elementary school students is often considered a creepy thing. Some of the tricks that can be used to remove this paradigm is the use of learning media that are attractive to students, one of which is the edu-game media based on android along with current technological developments. This development research developed the edu-game media based on android which aims to: describe the process of developing the edu-game media based on android to learn LCM and GCD for the 4th graders and (2) analyze the feasibility level of the edu-game media based on android to learn LCM and GCD for the 4th graders. The trial subjects of this study were the 4th graders of Laboratory Unesa Elementary School Surabaya and Geluran 1 Elementary School Taman Sidoarjo. The model used in this research is Plomp’s development model. From this research, the results obtained from the material expert validator with a percentage of 94.7% (valid), and from the media expert validator with a percentage of 93.75% (valid). Testing the test subjects got an average percentage of the entire program of 93.4% (very feasible).
The development of robotic-based learning media in improving critical thinking abilities and learning outcomes of primary students
Authors: Nugraha W S , Pujiasti D , Nurjamaludin M , Suryaningrat E F 
Published: August 2021

Abstract
This study aims to develop robotic-based learning media that can improve students’ critical thinking skills and students’ learning outcomes. The method used in this research is the experimental research method, with 4th grade students of primary school as a subject. The instruments used include test, questionnaire, and observation sheet. The data analyzed were the results of the application in learning and student response questionnaires. The results showed that the developed robotic-based learning media could improve students’ critical thinking skills and student learning outcomes with a gain value up to 0.85 (high criteria). The highest increase in thinking ability occurs in the indicator of analyzing and clarifying questions, answers, and arguments. Student learning outcomes after using robotic-based media showed a significant increase, this was indicated by the gain value reaching 0.78 (high criteria). The results of the response questionnaire showed a value up to 75.59%.
Preliminary design of simple IoT-based Smart Home trainer for kids
Authors: Fuada S , Hendriyana H , Putri H E , Caturiasari J , Jannah F R 
Published: August 2021

Abstract
In the Industrial 4.0 era, all household appliances have been connected to the internet, i.e., lights, curtains, fans, and so on. Users can control it via a smartphone as a remote. The competency to master the concepts and practices related to IoT are useful. The basic concept of IoT can be introduced to students since they are in primary school. In this paper, we design an Internet-of-Things trainer to demonstrate one of a simple IoT application to children. A smart home system is selected as a use case; we select simple household appliances to represent a smart home environment. The trainer is divided into two parts: Android app as a remote system and the end-device as the node. The node is then divided into three types: mechanical-based (door-lock), electrical-based (mini DC fan, generic power switch), and sensor (temperature & humidity sensor). We used a 4-D research and development model to develop this trainer. However, this paper is limited to the “Define,” “Design,” and “Development” stages. All nodes are tested their performance, and according to the functional test, it can work properly as expected: the nodes can be controlled (OFF to ON, or vice versa) and monitored (temperature and humidity) by using a smartphone. This trainer kit can be taught for 6th grade of elementary school students (about 12 – 14 years old).
Reduce, Reuse, and Recycle (3R) waste activities in the school environment for elementary school students
Authors: Rudiyanto R , Kurniati E , Fitriani A D , Rengganis I , Mirawati M , Justicia R 
Published: August 2021

Abstract
This paper discusses the implementation of reduce, reuse and recycle waste activities for elementary school students as one of the after school care programs. The problem that underlies this study is the lack of concern for the natural environment, especially in waste management in the school environment. The research used the action research method involving one teacher and 20 children aged 6-8 years who participated in the after school care program in elementary schools. Data were collected through observation, interviews and documentation, then analyzed using thematic analysis techniques. The results of the study describe the implementation stages of the Reduce, Reuse and Secycle (3R) activities including the introduction of the program provided by the teacher through animated video media, discussion of the 3R program with children, direct practice of sorting and recycling waste in the school environment, and evaluation of the implementation of the 3R program. Other results also describe that children able to identify categories of organic, inorganic and hazardous waste, as well as the emergence of children’s caring attitudes towards waste management in the school environment.
Analysis of 2010-2019 Trends of environmental awareness publication using VOSviewer application
Authors: Jayadinata A K , Hakam K A , Munandar A , Subarjah H , Julia J , Supriyadi T 
Published: August 2021

Abstract
This study aims at identifying and analyzing research on environmental awareness that have been published in international journals in the period of 2010-2019 through bibliometric analysis. The publication trends mapping was conducted in four stages: (1) searching for articles in the Scopus database using the Publish or Perish application; (2) filtering articles to be analyzed, (3) completing article metadata using the EndNote application; (4) conducting bibliometric analysis using the VOSviewer application. The results of the analysis found that (1) the yearly trends of publication on environmental awareness increased by the end of 2019; (2) the most cited articles on environmental awareness were in the business scope with 329 citations; (3) the journal with the most contributions is the Journal of Cleaner Production and the publisher with the most contributions was Elsevier Ltd; and (4) the most used keyword by authors in articles on environmental awareness was “environmental awareness”. This study concludes that the publication trends in environmental awareness is increasing, but the yearly citation pattern is still decreasing. Therefore, writing articles with the top citation on the theme of environmental awareness is a good opportunity for further research.
Human inspired fall arrest strategy for humanoid robots based on stiffness ellipsoid optimisation
Authors: Cui Da , Peers Christopher , Wang Guoqiang , Chen Zeren , Richardson Robert , Zhou Chengxu 
Published: August 2021

Abstract
Falls are a common risk and impose severe threats to both humans and humanoid robots as a product of bipedal locomotion. Inspired by human fall arrest, we present a novel humanoid robot fall prevention strategy by using arms to make contact with environmental objects. Firstly, the capture point method is used to detect falling. Once the fall is inevitable, the arm of the robot will be actuated to gain contact with an environmental object to prevent falling. We propose a hypothesis that humans naturally favour to select a pose that can generate a suitable Cartesian stiffness of the arm end-effector. Based on this principle, a configuration optimiser is designed to choose a pose of the arm that maximises the value of the stiffness ellipsoid of the endpoint along the impact force direction. During contact, the upper limb acts as an adjustable active spring–damper and absorbs impact shock to steady itself. To validate the proposed strategy, several simulations are performed in MATLAB & Simulink by having the humanoid robot confront a wall as a case study in which the strategy is proved to be effective and feasible. The results show that using the proposed strategy can reduce the joint torque during impact when the arms are used to arrest the fall.
A direct transfer solution for digital laser printing of CVD graphene
Authors: Papazoglou Symeon , Kaltsas Dimitrios , Logotheti Adamantia , Pesquera Amaia , Zurutuza Amaia , Tsetseris Leonidas , Zergioti Ioanna 
Published: August 2021

Abstract
State-of-the-art methods for printing highly resolved pixels of two-dimensional (2D) materials on technologically important substrates typically involve multiple and time-consuming processing steps which increase device fabrication complexity and the risk of impurity contamination. This work introduces an alternative printing approach based on the laser induced forward transfer (LIFT) technique for the successful digital transfer of graphene, the 2D material par excellence. Using LIFT, CVD graphene pixels of 30 μm × 30 μm in size are transferred on SiO2/Si and flexible polymer substrates. The potential of upscaling this novel approach by reaching sizes of up to 300 μm × 300 μm for transferred graphene patches is also demonstrated. The feasibility of laser-induced transfer of graphene is corroborated with ab initio molecular dynamics simulations which elucidate atomic-scale details of the seamless detachment of the monolayer from a metallic donor surface and its subsequent attachment to a receiver substrate.
Study of ‘one-step’ preparation of r-PET fiber-reinforced PE composites
Authors: Mao Yapeng , Cao Wei , Li Qiuying , Wu Chifei 
Published: August 2021

Abstract
In this paper, ‘one-step’ molding process was used to prepare r-PET fiber-reinforced PE composites. Effects of compatibilizer HY-3308 and fiber content on interfacial properties, thermal properties, mechanical properties, and the fiber dispersion of the composites were studied. FTIR, contact angle test, and SEM results indicated that the compatibilizer improved the interfacial combination between the PET fiber and PE matrix. DMA, DSC, mechanical properties, density, and SEM results indicated that with an increase of HY-3308 content, bonding between the fiber and matrix became tight; the phase interface became blurred, and the mechanical properties were gradually improved. Such a ‘one-step method’ preparation of the r-PET fiber-reinforced PE composites is simple, which is beneficial for the industrialization of recycling processes for r-PET fiber.
Element-specific magnetic hysteresis loops observed in hexagonal ErFeO3 thin films
Authors: Yokota Hiroko , Kobori Yu , Jitsukawa Shunsuke , Sakai Seiji , Takeda Yukiharu , Mitsui Takaya , Kobayashi Yasuhiro , Kitao Shinji 
Published: August 2021

Abstract
We investigated the magnetic properties of multiferroic hexagonal ErFeO3 thin films by using x-ray magnetic circular dichroism (XMCD) and synchrotron Mössbauer spectroscopy. In order to reveal the element-specific magnetic properties, temperature-dependent XMCD experiments were conducted at the Fe L
2,3 and Er M
4,5-edges. Apparent magnetic hysteresis loops appear for both ions below the Néel temperature, which suggests the existence of ferromagnetism. The temperature evolutions of the coercive field and spontaneous magnetization for both ions show similar behavior. These results indicate that Fe ions influence the magnetism of Er ions. Our results deepen the understanding of the physical properties of hexagonal rare-earth ferrite system.
Fe-Mn based catalytic ceramic filters with SO2 resistance for NH3-SCR at low temperature
Authors: Li Kun , Jin Jiang , Li Kun , Wu Ruian , Zhang Hua 
Published: August 2021

Abstract
The Fe-Mn based catalyst was loaded on porous ceramic filter with impregnation method to prepare a catalytic ceramic filter which integrates the denitration and dust removal at low temperature. The effect of the Fe/Mn ratio and doping Sm on the catalytic performance of Fe-Mn based catalyst were studied. In the temperature range of 120 °C–220 °C, the Fe2Mn1Sm0.2Ox catalytic filter exhibited over 90% NO removal efficiency. When 100 ppm SO2 and 7vol.% H2O in the flue gas, the NO removal efficiency still maintained above 89% at 200 °C. These results proved that the Fe2Mn1Sm0.2Ox catalytic filter has excellent catalytic performance and excellent H2O and SO2 resistance at low temperature. In addition, the dust collection efficiency reached 99.99%. The NH3-TPD, H2-TPR and XPS confirmed that the Fe2Mn1Ox catalysts doped with Sm have stronger surface acid, more surface absorbed oxygen and more oxygen vacancy, which lead to higher NH3-SCR activity and better SO2 and H2O resistance.
Averaging method and coherence applied to Rabi oscillations in a two-level system
Authors: Chalkopiadis L , Simserides C 
Published: August 2021

Abstract
We study Rabi oscillations in a two-level system within the semiclassical approximation as an archetype test field of the Averaging Method (AM). The population transfer between the two levels is approached within the first and the second order AM. We systematically compare AM predictions with the rotating wave approximation (RWA) and with the complete numerical solution utilizing standard algorithms (NRWA). We study both the resonance (Δ = 0) and out-of-resonance (

Δ
≠
0

) cases, where Δ = ω − Ω, and ℏΩ = E
2 − E1 is the two-level energetic separation, while ω is the (cyclic) frequency of the electromagnetic field. We introduce three types of dimensionless factors ϵ, i.e., ΩR/Δ, ΩR/Σ, and ΩR/ω, where ΩR is the Rabi (cyclic) frequency and Σ = ω + Ω and explore the range of ϵ where the AM results are equivalent to NRWA. Finally, by allowing for a phase difference in the initial electron wave functions, we explore the prospects coherence can offer. We illustrate that even with equal initial probabilities at the two levels, but with phase difference, strong oscillations can be generated and manipulated.
Quantitative annular dark-field imaging in the scanning transmission electron microscope—a review
Authors: Dwyer Christian 
Published: August 2021

Abstract
This article provides a review of quantitative annular dark-field imaging in the scanning transmission electron microscope, paying particular attention to the methods of image quantification, and the application of quantitative data, including the use of density functional theory calculations, to relate the properties of nanomaterials to atomic-level structure.
Patients’ preferred place of death: patients are willing to consider their preferences, but someone has to ask them
Authors: van Doorne Iris , van Rijn Marjon , Dofferhoff Sjoerd M , Willems Dick L , Buurman Bianca M 
Published: August 2021

Abstract

Background
end-of-life care is not always in line with end-of-life preferences, so patients do not always die at their preferred place of death (PPD). This study aims to identify factors associated with patients’ PPD and changes in PPD.

Methods
we prospectively collected data on PPD at four time points within 6 months from 230 acutely hospitalised older patients who were part of the control group in a stepped-wedge randomised controlled trial. Associations between patient characteristics and preferences were calculated using multivariable (multinomial) logistic regression analysis.

Results
the mean age of participants was 80.7 years. 47.8% of the patients had no PPD at hospital admission. Patients previously admitted to hospital preferred to die at home (home versus no preference: odds ratio [OR] 2.38, 95% confidence interval [CI] 1.15–4.92; home versus healthcare facility: OR 3.25, 95% CI 1.15–9.16). Patients with more chronic diseases preferred the healthcare facility as their PPD (healthcare facility versus no preference: OR 1.33, 95% CI 1.09–1.61; healthcare facility versus home: OR 1.21, 95% CI 1.00–1.47). 32 of 65 patients changed their preference during follow-up, and most of these had no PPD at hospital admission (home versus no preference: OR 0.005, 95% CI ≤0.001–0.095) and poorer self-rated well-being (OR 1.82, 95% CI 1.07–3.08).

Conclusions
almost half of the patients had no PPD at baseline. Previous hospital admission, having more chronic diseases and living alone are associated with having a PPD. Introducing PPD could make older people aware of PPD and facilitate optimal palliative care.
Molecular design in drug discovery: a comprehensive review of deep generative models
Authors: Cheng Yu , Gong Yongshun , Liu Yuansheng , Song Bosheng , Zou Quan 
Published: August 2021

AbstractDeep generative models have been an upsurge in the deep learning community since they were proposed. These models are designed for generating new synthetic data including images, videos and texts by fitting the data approximate distributions. In the last few years, deep generative models have shown superior performance in drug discovery especially de novo molecular design. In this study, deep generative models are reviewed to witness the recent advances of de novo molecular design for drug discovery. In addition, we divide those models into two categories based on molecular representations in silico. Then these two classical types of models are reported in detail and discussed about both pros and cons. We also indicate the current challenges in deep generative models for de novo molecular design. De novo molecular design automatically is promising but a long road to be explored.
Clinical Outcomes, Echocardiographic Findings, and Care Quality Metrics for People Living With Human Immunodeficiency Virus (HIV) and Rheumatic Heart Disease in Uganda
Authors: Chang Andrew Y , Rwebembera Joselyn , Bendavid Eran , Okello Emmy , Barry Michele , Beaton Andrea Z , Haeffele Christiane , Webel Allison R , Kityo Cissy , Longenecker Chris T 
Published: August 2021

Abstract

Background
Rheumatic heart disease (RHD) affects 41 million people worldwide, mostly in low- and middle-income countries, where it is co-endemic with human immunodeficiency virus (HIV). HIV is also a chronic inflammatory disorder associated with cardiovascular complications, yet the epidemiology of patients affected by both diseases is poorly understood.

Methods
Utilizing the Uganda National RHD Registry, we described the echocardiographic findings, clinical characteristics, medication prescription rates, and outcomes of all 73 people carrying concurrent diagnoses of HIV and RHD between 2009 and 2018. These individuals were compared to an age- and sex-matched cohort of 365 subjects with RHD only.

Results
The median age of the HIV-RHD group was 36 years (interquartile range [IQR] 15), and 86% were women. The HIV-RHD cohort had higher rates of prior stroke/transient ischemic attack (12% vs 5%, P = .02) than the RHD-only group, with this association persisting following multivariable adjustment (odds ratio [OR] 3.08, P = .03). Prevalence of other comorbidities, echocardiographic findings, prophylactic penicillin prescription rates, retention in clinical care, and mortality were similar between the 2 groups.

Conclusions
Patients living with RHD and HIV in Uganda are a relatively young, predominantly female group. Although RHD-HIV comorbid individuals have higher rates of stroke, their similar all-cause mortality and RHD care quality metrics (such as retention in care) compared to those with RHD alone suggest rheumatic heart disease defines their clinical outcome more than HIV does. We believe this study to be one of the first reports of the epidemiologic profile and longitudinal outcomes of patients who carry diagnoses of both conditions.
Balancing Is in the Eye of the Beholder: Explaining the Critical Case of Late Imperial China
Authors: Wojciuk Anna 
Published: August 2021

Abstract
Balancing is at the core of the realist approach to the behaviour of states in international relations. Excluding cases of state incoherence, states are expected to balance promptly and infallibly whenever the balance of power shifts to their disadvantage. In this article, I explain a critical puzzle: why did China not respond to the external shock of Western military intervention between the 1840s and 1900 with a more robust balancing response? I argue that, in order to start balancing, China needed to abandon its Confucian ideational structures and replace them with ones resembling contemporary realism. I demonstrate that such structures were adopted after the acquisition of Chinese versions of social Darwinism. My argument, therefore, is that balancing occurs only as long as the structure of the international system is in sync with the affected actors’ ideational structures.
Walking Back Dissents on the European Court of Human Rights: A Rejoinder to Alec Stone Sweet, Wayne Sandholtz and Mads Andenas
Authors: Helfer Laurence R , Voeten Erik 
Published: August 2021

Abstract
Over the last decade, scholars have debated whether the shifting landscape of individual rights protection in Europe has influenced the decisions of the European Court of Human Rights (ECtHR). In our article, ‘Walking Back Human Rights in Europe?’, we analysed every minority opinion of the ECtHR Grand Chamber between 1998 and 2018. We found a substantial increase in what we labelled as ‘walking back dissents’ – minority opinions asserting that the Grand Chamber has overturned prior case law or settled doctrine in a way that favours the government. In their Reply, Stone Sweet, Sandholtz and Andenas (SSA) offer two principal critiques. First, they assert that they could not ‘replicate’ our coding. Second, SSA challenge our claim that legal and political developments in Europe have incentivized the ECtHR to move in a rights-restrictive direction. These claims are inaccurate and mischaracterize our article. First, SSA do not ‘replicate’ our study. Instead, they code a very small subset of judgments using more restrictive, subjective and vague criteria – which, unsurprisingly, yield fewer walking back dissents. Second, SSA narrowly focus on the Brighton and Copenhagen conferences, ignoring numerous other changes at the national and regional level that have created a more constrained environment for the ECtHR.