bluuebunny/crossref_metadata_2025_split huggingface dataset:
The analysis of physics concepts application on the foundation structure of the Jambi’s traditional house to build character education
Authors: Pujaningsih F B , Kurniawan W , Putri N , Bahar F F , Pratomo S 
Published: January 2021

Abstract
The concept of physics can be applied to aspects of customs and culture in order to preserve local wisdom. One way to introduce the customs and culture of the local area can be done by studying traditional houses. The foundation structure of the Jambi’s traditional house uses wooden poles arranged to support the weight above where. Mass of each pole has a correlation with the amount of load that has been distributed evenly. The purpose of this study is to analyse and explain the application of physics concepts in the foundation structure of traditional Jambi houses and to build character education to new generation. The process of collecting data is done by interview, observation, and documentation. The results of interview section are about the advantage of using wood, philosophy and meaning of foundation structure. Based on the data analysis of observation, it is shown that the mass of each pole is strong enough to support the live and dead load that has been analysed. Because it has a pole mass greater than the distributed load. So this can educate the new generation to know the process of making foundation structures with certain calculations that can be analysed through physics concept.
Categorization intermediate conception of the third year students’ of physics education program in electromagnetism wave sub-concepts
Authors: Wardana R W , Liliasari L , Tjiang P C , Nahadi N 
Published: January 2021

Abstract
Some results on the conceptual change, indicated a discriminate between alternative and scientific conceptions. This could be represented as a medium conceptions, called the intermediate conceptions. Researches on the electromagnetic wave sub-concept generally assessed based on modern physics conceptions, on the other hand it needs to be assessed based on the concept of electricity and magnetism. This research aims to identify and describe category of intermediate conception of third year physics education students in electromagnetic wave sub-concepts. This research used descriptive method. The subjects of this research were 73 third year students in a University of Teacher Training at Bandung. Data collection have been done by essay test and interview. The analyzed data shows that 77% of the students are on ‘lateral intermediate conception’category and none of them were on ‘naïve physics’. Other results showed that the students have difficulty on describing, explaining, interpreting qualitatively about electromagnetic wave sub-concepts.
Development of multiple representation based mechanics lectures using dependent and independent field (MR-FD & FI)
Authors: Hartini T I , Liliasari S , Setiawan A , Ramalis T R 
Published: January 2021

Abstract
This study aims to develop mechanics lectures based on multiple representations using field dependent and field independent cognitive styles (MR-FD & FI), in understanding the mastery of the concept of mechanics. In the context of physics learning based on multiple representations is to combine two or more representations as a form of learning development that is used to understand and convey physics concepts. Cognitive style can be divided into two, namely: dependent field cognitive style (FD) and independent field cognitive style (FI). The third semester student research subjects numbered 21 students from a university in Jakarta Indonesia. The first instrument used consisted of modules containing MR-based content consisting of 4 mechanical contents namely; gravity and central force (GGS), particle system dynamics (DSP), rigid body rotation (RBT) and rigid body rotation in three dimensions (RBT3D) that must be filled. The second instrument is a student worksheet (LKM) in which there are questions in accordance with the indicators and objectives of MR-based lectures undertaken by students. Descriptive quantitative and qualitative research methods were carried out to get a clear picture of the implementation of MR using the cognitive styles of FD and FI. The results showed that most students have a field dependent thinking style (FD) seen in the post-test results on GGS material 61.90%, RBT 61.90%, DSP 57.14% and RBT3D 57.14%. For independent field thinking (FI), the results of post-test results were 42.86% DSP, RBT 38.10%, RBT3D 38.10% and GGS 33.33%. It is concluded that students’ thinking styles can change from thinking styles that were initially field dependent (FD) can change to field independent (FI). This can occur due to various factors, including; 1) Health conditions, classrooms and students focus; 2) The level of difficulty and ease of conceptualization of the material being studied; 3) Basic math and physical abilities. Limitations in this study involve only subjects from small classes from one university, so the results are not strong enough to represent the overall situation, this could be a way to conduct further research with more students and various subjects. This study is the first to map the understanding of the concept of mechanics based on multiple representations using the cognitive style of FD and FI, the results of the study find new discoveries, where all students have a cognitive style of either FD or FI.
Structure analysis of student worksheet for junior high school science subject using the Vee diagram
Authors: Permana I , Nuraeni E 
Published: January 2021

Abstract
The purpose of this study was to analyze the student worksheet structure of science subject of junior high school grade 8 based on the Vee diagram framework. The analysis was conducted on 39 worksheets from the 3 most widely used source textbooks in Bandung, West Java, Indonesia. The worksheet analysis is performed using a checklist of completeness and whether the worksheet components are presence or not based on Diagram Vee components, namely focus questions, object/events, theory/concepts/principles, notes/transformations, and knowledge claims. The quality measurement of the student worksheet structure for each component is carried out using the presence rubric of Diagram Vee components and the scoring rubric to the presence of the Diagram Vee components. The results showed that almost all worksheets had the components of focus questions and objects/events. However, several Diagram Vee components are found with poor quality in all worksheets, with the lowest component is in the theory/concept/principle.
Educational potential of landscape-recreational resources of shore areas of Lake Baikal
Authors: Atutova Zh V , Kobylkin D V , Zhao M 
Published: January 2021

Abstract
We made a map of the contemporary landscape structure on the site of the Goloustnenskoe coast to analyze the recreational development of the coast of Lake Baikal; based on this map, we identified the main factors of natural attractiveness for the development of the tourism industry. We determined historically formed and preferred types of recreation activities. With a view to reveal environmental problems, we identified the main directions for recreational activities that have the greatest negative impact on the functioning of landscape complexes in the area. It is noted that a low level of ecological culture of vacationers is often the main reason for the activation of adverse events. Having considered the high degree of sensitivity of landscape complexes to anthropogenic impact, we proposed ecotourism-oriented leisure activities that can not only reduce the burden on the part of recreational activities but also increase the level of environmental morality. Besides, we provided examples of recreational facilities, already existing on the Goloustnenskoe coast of Lake Baikal and methods of their management, guaranteeing environmental stability, which is necessary for the implementation of measures aimed at sustainable development of the Baikal territory.
Geo-information analysis of zones with special conditions for territory use for sustainable development: a case of Nizhnevartovsk
Authors: Kuznetsova V P , Kuznetsova E A , Kushanova A U , Isupov V A 
Published: January 2021

Abstract
According the Town Planning Code and the Land Code of the Russian Federation, zones with special conditions for territory use must be shown in the documents of territorial planning and town development zoning. This issue is significant due to the absence of information on the boundaries of such zones in the Unified State Register of Real Estate. Currently, the city of Nizhnevartovsk does not have fully delineated the boundaries of zones with special conditions for territory use for the natural objects and the objects of engineering and transport infrastructure. The aim of research was to make a spatial analysis of the zones with special conditions for territory use in Nizhnevartovsk by means of geo-information mapping in order to study the territorial planning and urban development. The spatial analysis by geo-information mapping revealed that the zones with special conditions for territory use in Nizhnevartovsk do not comply with the current regulatory acts in some aspects or remain partially undelineated. For the purposes of the study, the coastal protection zone, the water protection (fish protection) zone, the railway sanitary protection zone and the aerodrome environs inside the boundary of the city of Nizhnevartovsk were identified. The result of the study was the cartographic materials showing the spatial analysis of zones with special conditions for territory use in the city of Nizhnevartovsk. The widths of the sanitary protection zones around industrial facilities were established taking into account the sanitary classification, the calculated air pollution and the levels of physical impacts.
The history of vegetation and landscapes of the lake Ilchir basin for understanding the modern vegetation structure in the Okinsky plateau
Authors: Volchatova E V , Bezrukova E V , Kulagina N V , Levina O V , Shchetnikov A A , Kerber E V , Krainov M A , Filinov I A 
Published: January 2021

Abstract
The method of detailed sampling of sediments from Lake Ilchir allowed obtaining a high-resolution record of changes in the natural environment, which meets the world modern standards of temporal resolution in the studies of the Holocene environment. The data on the palynological analysis of bottom sediments from Lake Ilchir (51°58’26.0” N and 100°59’29.0” E) enable us to reconstruct the composition of vegetation and the structure of landscapes in the lake basin as well as to understand the process of its change in Middle-Late Holocene. The lake is located in the Republic of Buryatia and is the source of the Irkut River, which flows into the Angara River. The results obtained are unique for the regional Holocene environment, since they allow us to clarify the nature of changes in regional vegetation with an average time interval of 125 years. A reliable age model provides for intra-and interregional correlations of environmental changes that helps to understand the possible causes of changes in regional vegetation. Palynological records from inland regions are important for reconstructing the processes of past changes in landscapes, assessing the sensitivity of ecosystems in these regions to future climatic variations that affect the composition of vegetation and its change in time.
Erosion and accumulative processes in river valleys of the Upper Angara region (as exemplified by the catastrophic floods in 2019 on the rivers of Irkutsk Oblast)
Authors: Opekunova M Yu 
Published: January 2021

Abstract
The article considers development features of erosion-accumulative processes during catastrophic floods in 2019 on the rivers of Irkutsk oblast, in the Angara river basin (as exemplified by the Bol’shaya Belaya river). Considering the combination of morphodynamic channel types we preliminary determined main types, interaction degree of flood waters and floodplain-channel complexes in different areas. We revealed that the most intensive transformations of the floodplain-channel relief are associated with engineering and construction structures that hinder the natural exchange of floodplain and channel flows. The rates of coastal recession during the flood period were revealed; on average, they amounted to 2 m. The processes of coastal erosion-tearing away of bank are typical of sandy loam deposits composing the upper part of floodplain surfaces. The most dynamic areas of bank destruction correspond to the concave parts of the channel bends. Note is taken that the presence of linear infrastructure objects (roads) within the floodplain massifs often caused the flow rates increase and an increase in the volume of transported material, as well as formation of accumulative landforms, which can hinder water exchange between channel and floodplain streams in the future, and also serve as an additional development factor of processes that are negative for a person and can lead to total destruction of infrastructures, or cause significant damage to them.
An overview of physical and social vulnerability of high-risk coastal area after 14 years tsunami – a case study of Banda Aceh
Authors: Sugiarti A S , Meilianda E , Fatimah E 
Published: January 2021

Abstract
On December 26, 2004, tsunami one of the deadliest disasters has occurred in Aceh. Many of the casualties apparently occurred as the result of lack of awareness of tsunami hazards among the communities. Banda Aceh city of Sumatra Island, Indonesia is one of the severely affected coastal areas surrounding the Indian Ocean. After 14 years, despite the remarkable disaster event, peoples tend to return to build their house near the coastal areas, particularly in Banda Aceh. The purpose of this study is to investigate the level of vulnerability of the coastal area of Banda Aceh more than a decade post-tsunami. This research uses GIS and spatial analysis for processing spatial data. The result shows that in 2016 and 2017 Banda Aceh has the highest physical vulnerability, which is 64% whereby one of the highest physical vulnerability was in Punge Ujong and the lowest was in Gampong Pie. On the other hand, in 2017 Banda Aceh has the highest social vulnerability, which is 69%. The area that has the highest social vulnerability was in Punge Ujong and the lowest was in Gampong Pande. Overall, the tsunami vulnerability level in Banda Aceh remains high, particularly in the coastal area. The result of the study implies that despite there is a collective memory of the tsunami of 2004, however, people tend to ignore the risk of living near the coastal areas. Actions in terms socialization on the risk and mitigation strategies should therefore be constitute in the development plan on the city level.
An Evaluation of Changes to The Secondary School Geography Curriculum in Indonesia Disaster Risk Reduction Effort
Authors: Kamil P A , Utaya S , Sumarmi  , Utomo D H , Abdi A W , Ridha S 
Published: January 2021

Abstract
Disaster education in Indonesia has been initiating after the Aceh Tsunami disaster in 2004 which was one of the major disasters that have ever occurred in Indonesia. Disaster risk reduction efforts have been carried out by the Indonesian government by revising the national curriculum. This aims to improve prevention efforts and preparedness for the school community. School students in Indonesia are in extreme risk of natural disasters, especially when they are in school. In this context, a few educational programs for disaster risk reduction (DRR) have been integrated into school subjects. Therefore, this study aims to analyze and evaluate the changes in the geography curriculum for secondary schools that have been revised in Indonesia. The new curriculum began to be implemented in 2013. In this context, this article will focus on analyzing geographic curriculum content that integrates disaster related material that is taught to high school students. Evaluating curriculum changes is aimed at building students’ disaster knowledge with geographic learning in an effort to improve disaster preparedness.
Linking geomorphological features and disaster risk in a school district: The development of an in-service teacher training programme
Authors: Sakurai A , Oda T , Murayama Y , Sato T 
Published: January 2021

Abstract
The dimension and degree of a disaster can depend on the vulnerability of the location, the people and the community. One of the key lessons learnt from the 2011 Great East Japan Earthquake disaster was that schools should prepare a school contingency plan in advance. To do so, they should fully understand their school’s disaster risk in the worst-case scenario in order to protect children’s lives at the school. Therefore, schools are required to customise their preparedness measures according to the school’s locality. The training programme, ‘Understanding disaster risk based on geographic features of a school district’ was developed and implemented in Ishinomaki City, Miyagi Prefecture, which was severely affected by the 2011 tsunami. The training programme was a spin-off of a school-based disaster education programme implemented in Ishinomaki City and was expected to support the customisation of schools’ disaster manuals according to the school district’s disaster risk. In order to strengthen teachers’ map-reading skills, the training was organised in three steps. The first step was to enable teachers to acquire basic map-reading skills and read a contour map to understand the geomorphological features of their school district. The second step was to have teachers compare these maps to hazard maps (for tsunamis, floods and landslides) to understand the links between geomorphological features and disaster risk. The third step was to have them identify emergency evacuation sites and evacuation shelters for each hazard type in their school district. It was found that the training helped to increase the participants’ confidence in understanding these maps.
Study on shear wave attenuation characteristics of shallow sediments in gas hydrate pilot production area of South China Sea
Authors: Zhang Zhenchao , Guo Xiujun , Yang Bin , Tang Haoru , Lei Shiyun , Xing Cheng , Wu Jingxin 
Published: January 2021

Abstract
Shear wave attenuation of sediment is an important acoustic feature of seafloor sediment, which reflects the ability of sediment to absorb and dissipate shear wave energy, which is closely related to sediment structure. In order to explore the change rule and influencing factors of shear wave attenuation in sediments, the absorption coefficient was selected as the characterization of shear wave attenuation characteristics, and unconsolidated undrained triaxial shear tests were carried out with two typical sediment silty sand and fine sand in Shenhu sea area of South China Sea as samples. Through comparative analysis, the experimental results show that the shear wave absorption coefficient of sediment is in the process of shear failure at first, it fluctuated slightly, then gradually stabilized, and finally continued to rise in the fluctuation. The shear wave absorption coefficient increases with the increase of porosity and decreases with the increase of confining pressure. In addition, the relationship between the shear wave absorption coefficient and the undrained shear strength of sediment presents a quadratic function. The smaller the shear wave absorption coefficient is, the higher the undrained shear strength of sediment is.
Analysis of Initial Geostress Field of a Hydropower Project without Measured In-situ Stress
Authors: Huang Taosheng , Ma Shuai , Liu Gao 
Published: January 2021

Abstract
Initial geostress field is an important factor affecting the stress distribution, displacement and failure mode of surrounding rock of underground engineering, and is also one of the important indexes of design for underground works, especially large hydropower projects. At present, the method to obtain the geostress field is mainly based on measured in-situ stress, however some projects are lack of in-situ stress measurement data. To solve this problem, we inversed regional tectonic stress field firstly, and then extracted the boundary load of the project area from the fitted regional tectonic stress field and embedded the underground cavern to be studied in the calculation model to carry out the numerical calculation of the geostress field of the project area. The results show that the direction of regional tectonic principal stress is NNE∼NE, and the average maximum horizontal tectonic stress is about 5.0MPa. The direction of the maximum principal stress in the project area is generally the same as that of the regional tectonic stress field, which indicates that the valley stress field is determined by the regional tectonic stress field. However, due to the influence of river incision, the geostress field of the project area redistributes, and has the basic characteristics of principal stress direction deflection and stress differentiation. The research results provide a basis for the subsequent study of the stability of underground caverns, and have a certain reference value for the method of obtaining initial geostress field of a project without measured in-situ stress.
The influence of e-commerce and modern logistics on regional economic structure and scope
Authors: Wang Linghong , Li Haoyue 
Published: January 2021

Abstract
With the rapid development of Internet and information technology, the space and time boundaries between regions have been broken. With the advent of the "Internet plus" era, the rapid development of e-commerce based on Internet and information technology has promoted the development of regional economy and modern logistics industry. The application level of e-commerce and the development of modern logistics also have an important impact on the regional economic structure and scope. Therefore, it is of great significance to study the impact of e-commerce and modern logistics on the scope of regional economic structure for promoting the coordinated development of e-commerce and modern logistics.
Planning Practice of Coordinated Development of Urban Traffic and Land Use
Authors: Meng Weiwei , You Tingting , Duan Yan , He Jia 
Published: January 2021

Abstract
While China’s economy is developing rapidly and sustainably, urban issues appears continuously, for instance traffic congestion, insufficient funds, environmental pollution, and housing shortages. It is necessary to learn from advanced international countries’ experiences and process urban planning in accordance with the domestic situation. This article analyses the relationship between transportation and land use, and proposes the basic idea of applying the concept of coordinated development of transportation and land use, by introducing the advanced experience of Singapore, Copenhagen and Hong Kong in the coordinated development of urban transportation and land use, which is conducive to improving transportation efficiency and has a realistic significance.
Research on Fatigue Test of Reinforced Concrete Beams Strengthened with CFRP Plates
Authors: Li Weifeng 
Published: January 2021

Abstract
To study the effect of different anchorages on the CFRP anchoring effect and fatigue, the loading test of the force-locking anchor system and the self-locking anchor system was carried out on the prefabricated beams with the same conditions to study the beams under different anchoring systems. After the fatigue test, the cracking situation, linear elasticity change, stiffness degradation, and failure mode were analyzed to analyze the fatigue life of the beam plate under different anchors, and it was concluded that the two anchoring systems had better performance without large overload. It has anti-fatigue performance and good reinforcement effect.