bluuebunny/crossref_metadata_2025_split huggingface dataset:
Designing STEM-based AJarMat activities for the study from home program
Authors: Susanto A , Danoebroto S W 
Published: August 2021

Abstract

AJarMat or “Ayo Belajar Matematika” was a movement program that involved teachers and parents in guiding children to learn mathematics at home. Especially during a pandemic, learning is done from home so its need parental support. This study aimed to determine parents’ role in assisting children to learn mathematics at home, obtain a STEM-based AJarMat activities design that can be supported by parents, and know the strengths and weaknesses of the design from the parent’s perspective. This research began with a survey on parental perceptions followed by a focus group discussion with two AJarMat ambassador teachers who had attended STEM training and two teacher trainer who had experienced in STEM and AJarMat. The participants of AJarMat from Jaten Public Elementary School were 26 parents of grade VI students. Data were collected using a Likert scale questionnaire 1 to 4, interview and document study then analyzed by descriptive statistics and qualitative analysis. The results showed that parents mainly act as motivators for children to learn mathematics at home. Furthermore, STEM-based AJarMat activities that parents can support include a project to make necklaces from seeds for integer learning and a cake-making project for learning fractions. On the other hand, the strengths of this design are using creative activities and using real objects as counting objects so that students find it easy to understand mathematics, are enjoy and not bored. Lastly, the weaknesses of this design are the difficulty in obtaining materials and the process of making requires special skills and patience.
Using technology, hands-on, and fieldwork activity for GLOBE learning in secondary school
Authors: Umbua L 
Published: August 2021

Abstract
As technology plays a crucial role in daily life, The Institute for the Promotion of Teaching Science and Technology (IPST) has designed “GLOBE Trees around Us” workshop based on GLOBE protocols (Green-Up, Green-Down, and tree height) using learning elements in order for students to measure tree height through mobile application together with Green-Up and Green-Down protocols through lecture and hands-on activities. According to the results from 150 student’s handbooks, more than 87% of students were able to understand Green-Up, Green-Down and tree height protocol by using video clips, paper leaf mock-up, mobile application and fieldwork activity. From the interview of nine teachers from four schools about the Green-Up activity, it shows that about 80% of students concentrated on the workshop better than they did in the classroom and felt enjoyable during the hands-on activity. In terms of the learning elements, it is found that almost 90% of teachers thought they were beneficial to apply in this workshop, especially the GLOBE Observer application. All the teachers agreed that the application is easy to use, and all related materials are easy to prepare. However, the limitation of activity is that the application is not compatible with some devices. Teachers also planned to use the learning elements in classroom or science camp to promote student interest and understanding. In addition, the students may gain problem-solving, collaboration, communication, and thinking skills from attending this workshop.
Integrated STEM education in the thai secondary schools: challenge and addressing of challenges
Authors: Suriyabutr A , Williams J 
Published: August 2021

Abstract
In response to the development of technology and to advance global competitiveness, many nations now face a shortage of a suitably trained STEM workforce. To develop the STEM workforce, STEM education has been integrated into the curriculum, which presents a range of challenges for teachers. Thailand is also in the process of integrating STEM education into their educational system. This paper aims to review the integration of STEM education in Thailand, focusing on the challenges of this implementation. Results from the literature reviewed suggest the challenges of STEM integration in Thailand consists of students’ low engagement in learning in the STEM disciplines, challenges in integrating engineering, and teachers’ knowledge and skills in teaching STEM integration. It also provides a review of possible solutions to each including engaging students by using questioning techniques, using the engineering design process (EDP) as a method to integrate engineering, and support teachers in professional development and collaborative partnerships.
Implementing the Earth System Science Curriculum in School through Research-Based Learning and Technology Enhancing 21stCentury Skills
Authors: Mongkonthan S 
Published: August 2021

AbstractAccording to IPST responsible for promoting the teaching of science from elementary to upper secondary schools in Thailand, IPST has developed Earth System Science curriculum since 2009 to raise understanding of the earth system, promote awareness of environmental problems, and increase 21stcentury skills in young generation. This study focused on implementing the ESS curriculum in schools to enhance 21stcentury skills and inspire students to become a young scientist based on research and technology. The process starts with recruit universities to be a partner, arrange a workshop, implement curriculum in school and finally, record student and teacher satisfaction by quantitative descriptive. After twelve years, the results show that, IPST and partners have implemented ESS curriculum in 896 participating schools of normal schools and enrichment science classroom schools all over the country. The schools integrated the curriculum as an additional subject, science subject, and science camps. ESS curriculum created research-based learning in STEM allowing students to employ their knowledge from various disciplines to conduct environmental research. Participants, including students and teachers had positive attitudes toward the curriculum, not only develop research skills, but also the 21stcentury skills, namely critical thinking, collaboration, communication, information literacy, technology literacy and social skills.
Individual deformability compensation of soft hydraulic actuators through iterative learning-based neural network
Authors: Sugiyama Taku , Kutsuzawa Kyo , Owaki Dai , Hayashibe Mitsuhiro 
Published: August 2021

Abstract
Robotic devices with soft actuators have been developed to realize the effective rehabilitation of patients with motor paralysis by enabling soft and safe interaction. However, the control of such robots is challenging, especially owing to the difference in the individual deformability occurring in manual fabrication of soft actuators. Furthermore, soft actuators used in wearable rehabilitation devices involve a large response delay which hinders the application of such devices for at-home rehabilitation. In this paper, a feed-forward control method for soft actuators with a large response delay, comprising a simple feed-forward neural network (FNN) and an iterative learning controller (ILC), is proposed. The proposed method facilitates the effective learning and acquisition of the inverse model (i.e. the model that can generate control input to the soft actuator from a target trajectory) of soft actuators. First, the ILC controls a soft actuator and iteratively learns the actuator deformability. Subsequently, the FNN is trained to obtain the inverse model of the soft actuator. The control results of the ILC are used as training datasets for supervised learning of the FNN to ensure that it can efficiently acquire the inverse model of the soft actuator, including the deformability and the response delay. Experiments with fiber-reinforced soft bending hydraulic actuators are conducted to evaluate the proposed method. The results show that the ILC can learn and compensate for the actuator deformability. Moreover, the iterative learning-based FNN serves to achieve a precise tracking performance on various generalized trajectories. These facts suggest that the proposed method can contribute to the development of robotic rehabilitation devices with soft actuators and the field of soft robotics.
Climate change shifts forward flowering and reduces crop waterlogging stress
Authors: Liu Ke , Harrison Matthew Tom , Archontoulis Sotirios V , Huth Neil , Yang Rui , Liu De Li , Yan Haoliang , Meinke Holger , Huber Isaiah , Feng Puyu , Ibrahim Ahmed , Zhang Yunbo , Tian Xiaohai , Zhou Meixue 
Published: August 2021

Abstract
Climate change will drive increased frequencies of extreme climatic events. Despite this, there is little scholarly information on the extent to which waterlogging caused by extreme rainfall events will impact on crop physiological behaviour. To improve the ability to reliably model crop growth and development under soil waterlogging stress, we advanced the process-basis of waterlogging in the farming systems model Agricultural Systems Production Systems sIMulator. Our new mathematical description of waterlogging adequately represented waterlogging stress effects on the development, biomass and grain yield of many commercial Australian barley genotypes. We then used the improved model to examine how optimal flowering periods (OFPs, the point at which long-term abiotic stresses are minimal) change under historical and future climates in waterlogging-prone environments, and found that climate change will reduce waterlogging stress and shift forward OFP (26 d earlier on average across locations). For the emissions scenario representative concentration pathway 8.5 at 2090, waterlogging stresses diminished but this was not enough to prevent substantial yield reduction due to increasingly severe high temperature stress (−35% average reduction in yield across locations, genotypes and sowing dates). It was shown that seasonal waterlogging stress patterns under future conditions will be similar to those occurring historically. Yield reduction caused by waterlogging stress was 6% and 4% on average across sites under historical and future climates. To adapt, both genotypic and management adaptations will be required: earlier sowing and planting waterlogging tolerant genotypes mitigate yield penalty caused by waterlogging by up to 26% and 24% under historical and future climates. We conclude that even though the prevalence of waterlogging in future will diminish, climate change and extreme climatic events will have substantial and perverse effects on the productivity and sustainability of Australian farms.
Orthogonal projections on hyperplanes intertwined with unitaries
Authors: Słomczyński Wojciech , Szczepanek Anna 
Published: August 2021

Abstract
Fix a point in a finite-dimensional complex vector space and consider the sequence of iterates of this point under the composition of a unitary map with the orthogonal projection on the hyperplane orthogonal to the starting point. We prove that, generically, the series of the squared norms of these iterates sums to the dimension of the underlying space. This leads us to construct a (device-dependent) dimension witness for quantum systems which involves the probabilities of obtaining certain strings of outcomes in a sequential yes–no measurement. The exact formula for this series in non-generic cases is provided as well as its analogue in the real case.
Study on the allocation of soil and water conservation measures for photovoltaic power station in rocky desertification mountainous area of Guizhou province
Authors: Tan Wei , Cao Shuanghe , He Yao , Li Yangsong 
Published: August 2021

Abstract
Stony desertification is widespread and, and the ecology is very fragile in the southwest Guizhou province. The careless and unreasonable water and soil conservation measures have caused serious water and soil loss and serious damage to the ecological environment. This paper takes a photovoltaic project in this area as an example to study soil and water conservation measures. Based on the author’s practical experience, a scientific and reasonable arrangement system of soil and water conservation measures and preventive management measures are proposed, which can not only provide reference for the prevention and treatment of soil and water conservation of similar projects, but also can be used to guide the main design and site construction, which has a strong guiding significance.
Research on the Evolution Trend of Energy Enterprise Organization Form
Authors: Zhao Jian , Cheng Jiaxu , Xu Yunfei , Wang Han , Sun Lichun 
Published: August 2021

Abstract
With the development of digital technology, energy enterprises have turned to digital transformation. In this context, the organizational form of energy enterprises will also change. This study put forward the path of energy enterprise organizational reform. Taking EDF, Tokyo Electric Power Company and other companies as examples, the study summarized the factors that influence the choice of energy enterprise organization. Finally, the study pointed out the future evolution direction of energy enterprise organization.
Demand Forecasting of Agricultural Cold Chain Logistics Based on Metabolic GM (1,1) Model
Authors: Wang Meng , Li Xin 
Published: August 2021

Abstract
The cold chain logistics is an important part of the whole logistics industry, with the rapid development of China’s economy, people’s living standards rising, consumer demand transformation, people’s demand for cold chain logistics is becoming more and more big, however, in the cold chain logistics industry, gradually increased demand for agricultural products in the public, this article selects 2014-2019 China’s cold chain logistics of agricultural products Based on the metabolic GM(1.1) model, the demand of cold chain logistics of agricultural products in China in the next five years is predicted. The predicted experimental results can provide data reference for relevant departments, in order to provide theoretical support for promoting the balance between supply and demand of cold chain of agricultural products.
Bibliometric Analysis on Decontamination of Chemical Warfare Agents in Last Thirty Years
Authors: Huang Xingqi , Chen Jingfei , Zhao Ting , Jin Yanren , Yan Chunxiao , Wu Yue , Zhang Lingxuan 
Published: August 2021

Abstract
Occurrence of large-scale biochemical wars is of little possibility today, but the international chemical security situation is still not optimistic. Effective decontamination of chemical warfare agents has received close attention, becoming a global necessity. In this paper, data in the Web of Science Core Collection database were selected to systematically investigate the relevant literature about the research progress on decontamination of chemical warfare agents from 1990 to 2020. Origin Pro 2019b and CiteSpace were conducted for multi-dimensional bibliometric analysis on literature type distribution, number of annual publications, countries, institutions, journals, authors, literature co-citation and citation bursts. By August 1, 2020, there are 2,602 papers related have been published and the number of annual publications shows a linear growth tendency. Amongst all 71 countries, United States is the country with the most publications as well as the largest centrality value. US ARMY ranks fourth in the number of publications while with the highest institution-based cooperation. “Nerve agents and blister agents”, “metal-organic frameworks” and “applications of metal-organic frameworks” are prevailing in recent years, which highlights the latest development direction and research frontiers. This article promotes scientific predictions and impact assessments of decontamination of chemical warfare agents.
Potential and contribution factors of carbon emission reduction in the power sector of BTH (Beijing-Tianjin-Hebei) region
Authors: Gao Yanghe , Li Wenxuan , Huang Ren 
Published: August 2021

Abstract
Beijing-Tianjin-Hebei region is not only the national key strategic development area, but also the main battlefield of low-carbon transformation. Beijing-Tianjin-Hebei region accounts for about 1/5 of the national carbon emissions, of which the power sector accounts for a large proportion of carbon emissions. Therefore, the research on the carbon reduction potential and contribution factors of Beijing-Tianjin-Hebei power sector is of great strategic significance to the achievement of BTH Coordinated Development and carbon neutralization strategy. Based on the comprehensive consideration of power generation, transmission, power consumption, power supply and other links, this paper constructs a bottom-up accounting model of CO2 emissions in power industry, and studies the main driving factors affecting carbon emissions by using LMDI method.
Semi-industrial experimental research on the influence of moisture on air dense medium fluidized bed separation
Authors: Li Lingyue 
Published: August 2021

Abstract
This paper conducted a semi-industrial experimental study on the influence of moisture on air heavy medium fluidized bed separation. The research results show that with the increase of coal moisture, the separation accuracy of the separator decreases. When the coal external water is 6.83%, it is difficult to effectively sort the coal; with the increase of the sorting time, the medium moisture will increase slightly; the medium consumption of clean coal and gangue products increases with the increase of the coal external water; when the water exceeds 3%, the media consumption has an almost linear relationship with the external water content; the media with agglomeration or excessive water content is not suitable for direct use as a sorting media and needs to be dried.
Ultrasonic-assisted extraction of carotenoids from navel orange in southern Jiangxi
Authors: Guanwen Suo , Chunli Zhou , Wei Su , Qiao Yan 
Published: August 2021

Abstract
In this study, single factor experiment and orthogonal experiment were used to study the extraction effect of carotenoids from navel orange in southern Jiangxi Province assisted by ultrasonic technology. The experimental results showed that when hexane: ethanol=1:1 as the extraction agent, liquid to solid ratio of 1:30, extraction time of 8 min, ultrasonic power of 250 W, extraction temperature of 25°C, extraction times of 4 times, the best extraction effect of carotenoids from Gannan navel orange was obtained.
Brief introduction of an automobile radiant cooling air-conditioning system based on photovoltaic power generation
Authors: Wan Letao , Liang Zuyi , Song Xiaopeng , Xiang Qingwei , Xiao Shu , Gong Jiang , Tu Min 
Published: August 2021

Abstract
This paper firstly analyzes the pain points of traditional automobile air-conditioning systems, then describes the relevant research status of automobile air-conditioning systems at home and abroad, and then focuses on the principle and structure of a new system, and finally analyzes its innovation and application advantages.
Research on the Construction and Application Strategy of Precision Marketing Model for Industrial and Commercial Customers
Authors: Qingyou Yan , Guangyu Qin , Qifeng Wei , Yang Yu , Yunfeng Zou 
Published: August 2021

Abstract
In the new electricity market, the main body of the market has evolved from the traditional electricity generation to the multi subject, and the customer value has changed. Based on the traditional method of evaluating the electricity customer value and new value after the release of power market, design new evaluation indexes for adapting the electric reform. Fuzzy analytic hierarchy process (FAHP) and entropy weight method are adopted to combine the overall weights of the design indexes and TOPSIS method is used to evaluate customer value comprehensively. According to the two dimensions which are customer value classification and customer stickiness, the main service mode for the sale electricity agent is designed. Through the example analysis, the quantitative results and the service strategy are put forward to provide assistant decision support for the differential operation of the sale of electricity entities.
The Dynamic Effects of Agricultural Insurance Development on the Optimization of Agricultural Industrial Structure—Generalized Method of Moments Estimation Based on Dynamic Panel Model
Authors: Qinru Li 
Published: August 2021

Abstract
As an important tool of agricultural risk diversification, agricultural insurance plays a positive role in the optimization of agricultural industrial structure and is one of the important means to support agriculture and benefit agriculture in China at the present stage. Based on the 2010-2019 panel data of 30 provinces (autonomous regions and municipalities) in China, this paper uses the systematic generalized method of moments to empirically investigate the impact of agricultural insurance development on the optimization of agricultural industrial structure. The research results show that the development of agricultural insurance has a significant role in promoting the optimization and upgrading of the agricultural industrial structure in both the long-term and short-term. In addition, agricultural labor force, economic development level, and agricultural risk level all have a significant positive impact on the optimization of agricultural industrial structure. The fixed asset investment of farmers has a certain negative impact on the optimization of the agricultural industry structure. Finally, relevant countermeasures and suggestions are put forward based on the empirical results. The government should combine the needs of industrial structure upgrading, develop new types of insurance, and take measures to stabilize agricultural production.
Analysis and Research of Port Gathering and Transportation System in Tokyo Port
Authors: Xia MingZhu 
Published: August 2021

Abstract
Port industry belongs to the basic industry of national economy, is the most advanced window of a country’s opening to the outside world, and is an important hub for communication of economic and trade exchanges. The unimpeded collection and distribution energy directly affects the development of port throughput and the development of integrated port area. Therefore, it is one of the key factors to control the efficiency and benefit of port logistics service. This paper analyzes the existing problems of the Tokyo port distribution system and proposes corresponding countermeasures.
Study on the setting of non-motor vehicle left turn waiting area at typical intersection
Authors: Ge DaYun 
Published: August 2021

Abstract
Intersection as a vehicle intersection affects the traffic efficiency of the whole road network, and the mixed traffic of motor vehicles and non motor vehicles brings traffic pressure to the intersection. In order to operate and manage the intersection more efficiently, according to the setting principle of non motor vehicle left turn waiting area, this paper expounds the setting conditions and application scope in detail, and puts forward the setting and research of non motor vehicle left turn waiting area at the intersection. It is found that the setting of non motorized vehicle left turn waiting area can make effective use of the internal space of the intersection and improve its traffic capacity.