bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comprehensive theoretical studies on stable and radioactive isotopes produced by proton irradiation of titanium target
Authors: Kambali I 
Published: July 2020

Abstract
Natural titanium (natTi) has been suggested to be used as a window or target body in cyclotron-based medical radionuclide production. Therefore, comprehensive theoretical studies regarding impurities that might contribute to proton bombardment of Ti window are of great interest. In this investigation, the TALYS code was employed to calculate nuclear cross-sections of natTi(p,n), natTi(p,2n), natTi(p,α), natTi(p,d) and natTi(n,γ) reactions. The calculations were simulated for proton energies between 1 to 60 MeV. Based on the calculated results, several vanadium (V) radionuclides, e.g. 46,47,48,49,50V were predicted to be generated from natTi(p,n) reaction, whereas vanadium (V) radionuclides, namely 45,46,47,48,49V could be produced from natTi(p,2n) reaction. Some scandium radionuclides, e.g. 43,44,46,47Sccould be resulted from natTi(p,α) reaction, while stable 45Sc isotope was also predicted from this reaction. For natTi(p,d) reaction, 45Ti radionuclide was expected to be generated, while other stable 46,47, 48,49,50Ti atoms could be created as a result of this nuclear reaction. In addition, stable isotope 46Sc was expected to be produced from 46Ti(p,2p)45Sc reaction, while 46,47,48,49Sc radionuclides were foreseen from 47,48,49,50Ti(p,2p) reaction. In the event of secondary neutrons were reflected back and hit the natTi target, several stable 47, 48,49,50Ti atoms were predicted to be produced, whereas short-lived 51Ti radioisotope was expected to rise from 46Ti(p,d)45Ti reaction. This theoretical data could be useful for future radionuclide production should natTi is used as a target window instead of Havar.
Development of a robust mobile robot for volcano monitoring application
Authors: Evita M , Zakiyyatuddin A , Seno S , Kumalasari R , Lukado H , Djamal M 
Published: July 2020

Abstract
Indonesia is one of the countries that lies in the pacific ring of fire, the highlighted area that known to be active by seismic and volcano activities. Indonesia has a total of 129 active volcanoes that make the land fertile, but also vulnerable to disaster. When a volcanic eruption occurs, the current fixed monitoring system is not fully reliable. On the other hand, monitoring of further volcano activities is critically needed in this situation. Therefore, a volcano monitoring system that can move freely and controlled safely is needed. To solve this problem, a mobile robot that capable of moving in volcano area has been developed. The robot locomotion system is designed with 2 DC motor using 4-wheel drive configuration. Each motor implements a PID Controller to adjust the speed that has been set. In addition, the robot is also equipped with a camera (Logitech C920), vibration sensor (ADXL 345), temperature sensor (DHT 11), carbon dioxide gas sensor (MG-811), and sulphur dioxide gas sensor (TGS 2602) to retrieve volcanic condition data, as its function for volcano monitoring. The microcontroller used to adjust motor control and read sensors data is Nucleo STM32-F466RE, while the mini-PC that being used for integrated data communication and processing is Raspberry PI 3B+. PID Controller has been successfully applied with average deviation of 2.5% for the left motor, and 2.75% for the right motor.
Elemental analysis of agriculture soil by a pulsed carbon dioxide (CO2) Laser Induced Breakdown Spectroscopy (LIBS)
Authors: Idris N , Susilayani D , Sari A M , Lahna K , Ramli M , Kurihara K , Marwan  
Published: July 2020

Abstract
Quick qualitative elemental analysis of agriculture soil has been made using a pulsed CO2 LIBS. The laser beam with different pulse energy was focused on agriculture soil sample under ambient of helium at atmospheric pressure (760 Torr) after the laser beam passes through a covering metal mesh. Emission spectra from the consequent plasma was recorded in wavelength range from 200 nm to 800 nm. It was found that by utilizing the mesh, intense plasma was generated immediately after the CO2 laser irradiation. It was seen that emission lines belong to salts, namely Ca, Mg, Na, K and metals such as Al, Si, Fe, Ti, Cr can certainly be identified. It was also found that the profile of the emission spectrum detected are basically relative similar to the standard soil, nevertheless the agriculture soil color is very different from the standard soil. Higher resolution and sensitivity optical multichannel analyzer (OMA) system is required to evaluate in greater detail the elemental composition of the soil samples.
Escape hill development as a strategy to improve urban safety after earthquake and tsunami Aceh 2004 based on regional planning and geotechnical aspect
Authors: Munirwansyah M , Munirwan H , Irsyam M , Munirwan R P 
Published: July 2020

Abstract
This paper examines urban safety of coastal zone in Banda Aceh city, based on multidisciplinary aspect. Firstly, from the perspective of geophysics aspect, the disasters are affected by the imbalance of the law of action-reaction, that material experiences repeated recurring collapse in return-period. Secondly, geotechnical considerations are a required to ensure the safety aspect in term of construction of escape hill. Lastly, from regional planning aspect, this research finds that the increasing of immigrating population to the high-risk coastal zone has not been followed by the development of evacuation facilities, amongst are escape hills. One consideration in escape hill development is the influence of freeboard and run up level, to obtain a safe embankment height and soil bearing capacity. Based on the soil properties c=0.03 kN/m2 and φ=32.5º was able to build escape hill up to a height of 8.00 m in stable with safety factor SF=2.6. Material sets with these variations can be proposed to establish the term of reference and detail engineering design in carrying out the escape hill construction at this location. This research finds that it is needed to build 12 more evacuation sites to improve urban safety in Banda Aceh City.
Exploring teacher perception about STEM learning material to foster students understanding of dispersion concept
Authors: Normayanti E , Abdurrahman A , Herlina K 
Published: July 2020

Abstract
In the 21st century, the required human resources must be of high quality and possess high-level thinking skills, including critical, creative, innovative. Thus, the teacher’s role is needed to develop these skills in preparing appropriate learning. The design of a learning plan must be able to accommodate the needs associated with the learning process in class. Activities undertaken as well as the results to be achieved through indicators of achievement must be fully reflected in the learning plans. This research was conducted to analyze teacher perceptions of STEM learning to improve understanding of diffraction concepts. The research method used qualitative methods. Data obtained from document analysis and in-depth interviews. This study involved 75 respondents/educators in physics who were scattered throughout the region in Lampung Province. The results showed the tendency of teachers to still use conventional learning methods. This was identified from the learning implementation plan and student worksheets compiled by the teacher had not developed learning innovations that can train students improving the understanding of concepts. So in future research, it is necessary to develop teaching materials that are integrated with STEM, so that they can improve students’ conceptualization and skills.
Mineral identification of rocks from Pohon Batu hot springs in West Seram using FTIR spectroscopy
Authors: Risakotta M Y S , Andayany H 
Published: July 2020

Abstract
This study demonstrates the Fourier Transform Infrared (FTIR) spectroscopy which has been applied to identification of mineral rocks from Pohon Batu hot springs, West Seram regency, Province of Maluku. FTIR spectroscopic interpretation are absorbance or transmittance spectra as a function of wavelength that shows the content of organic compounds found in rocks. From the conditions of mineral formation and presence of various impurity ions and elements also influence the intensity and position of the IR absorption peaks. This study identified the strong peaks of minerals like kaolinite at 3618 cm−1, montmorillonite at 1612 cm−1, organic carbon at 2924 cm−1, quartz at 1874 cm−1, calcite at 1797 cm−1, albite at 1026 cm−1, illite at 756 cm−1 and hematite at 532 cm−1. From the result of FTIR analysis indicates that this area has undergone hydrotermal alteration thus becoming a secondary minerals. Rock-forming minerals in the hydrothermal alteration process are influenced by the presence of temperature, pressure in geothermal fluids and the decomposition of plants and animals.
Optimizing the use of smartphones for M-learning as a supplement for magnetic learning with a scientific approach
Authors: Puspita N M , Suyatna A , Rosidin U 
Published: July 2020

Abstract
The purpose of this study was to optimize smartphone utilization for m-learning as a supplement to magnetic learning with a scientific approach that could be used in learning without limitation of space and time. The research method was based on the ADDIE research and development (R & D) design. The research procedure used was limited product design that had been validated. Data sources at the analysis stage of smartphone utilization needs and student needs for physics learning media are 60 high school students from several provinces. The Validation of the M-learning design was carried out by lecturer who were experts in physics education and physics teacher. Data on needs analysis and m-learning design validation were collected using a questionnaire and analyzed using descriptive quantitative. The results of the questionnaire were obtained 100% of the students who were respondents had an Android smartphone and only 68.3% of students had used an Android smartphone for learning. The results of expert validation and practitioners showed that the m-learning design suitable for magnetic learning supplements was interactive, could be used for independent learning, had learning objectives content, interactive modules, broadcast material, video and animation magnetic phenomena, experimental simulations, material summaries, hyperlinks to other learning sources, as well as interactive quizzes. Learning activities including study of teaching materials, experimental simulations, assignments, quizzes, discussion forums. Synchronous learning activities were carried out for discussion forums, asynchronous for others.
Physical module based on Higher Order Thinking Skill (HOTS) using 3D pageflip professional
Authors: Diana N , Latifah S , Gunawan I , Anggriani L 
Published: July 2020

Abstract
This study aims to develop a HOTS-based physics module using a professional 3D pageflip, knowing the opinions of experts on the feasibility of HOTS-based modules by using 3D pageflip professionals and to find out the responses of educators and students to HOTS physics modules. The results of this study are: HOTS-based physics modules using professional 3D pageflip that have been developed can be used at the SMA/MA level as teaching material. The final product that has been produced in the development of HOTS-based physics modules using 3D pageflip professionals has met very good criteria. Product exploration in HOTS-based physics modules uses for students in small group trials and field trials with very interesting criteria. With product trial response to educators against HOTS-based physics modules using 3D pageflip professionals with very good criteria. Based on these results, it can be obtained that teaching materials in the form of HOTS based physics modules are good and interesting to be used as physics teaching materials.
STEM literacy profile of junior high school students in Lampung Province, Indonesia
Authors: Ibrohim  , Abdurrahman  , Jalmo T 
Published: July 2020

Abstract
The 21st-century learning paradigm emphasizes the ability of students to think critically, be able to connect science with the real world, master information technology, communicate and collaborate so everyone must have critical thinking skills, knowledge and digital literacy skills, information literacy, media literacy, and master information technology and communication. This study aimed to describe the literacy profile of STEM (Science, Technology, Engineering, and Mathematics) on junior high school students in daily life. The study was conducted on junior high school students in Lampung Indonesia involving 167 students from 13 public and private schools. The method used in this study was a mixed-method with Sequential Explanatory Strategy. The research instrument used a questionnaire and interview guidelines. The results showed that junior high school students had used or implemented STEM (Science, Technology, Engineering, and Mathematics) in their daily lives even though sometimes they were not aware of it. The lack of practice in learning to use or apply the four STEM domains causes students to find it difficult to use or apply STEM in daily life. Therefore, the STEM approach needs to be maximized in learning especially science so that students can connect the knowledge obtained with reality in daily life.
The applications of InSAR technique for natural hazard detection in smart society
Authors: Jefriza  , Yusoff I M , Abir I A , Syahreza S , Rusdi M , Razi P , Lateh H 
Published: July 2020

Abstract
Synthetic Aperture Radar (SAR) is a potential application of remote sensing to geological and hydrometeorological hazards. This paper presents sustainability strategies for smart cities: the use of SAR Sentinel-1 for monitoring flood inundation and landslide hazards in Aceh Province, Indonesia. In this study, for flood detection, we attempt to uses Sentinel-1A (S-1A) in the same direction and acquisition through polarization of Vertical transmit and Vertical received (VV) – Vertical transmit and Horizontal received (VH) with a temporal baseline of 6 days. Those data were then analysed using the SNAP Toolbox. The results showed that the S-1A was successfully for detecting a flood inundation in which VH polarization is more sensitive than VV. For landslide monitoring, we apply multitemporal SAR images, where one of them is the Quasi-Persistent Scatterers (Q-PS) technique. Using ascending and descending orbit pass results in a better velocity map where both sides of the slope are detected due to the different sensor angle of both orbital passes. This technique has resulted in the undulating areas being monitored well and this will also fill the gap of layover and shadowing phenomena of the slant range SAR image. The Q-PS combinations were very effective to identify the deformation features associated with the land movement. For a smart city, natural hazards such as landslides and floods require continuous monitoring to ensure the potential as well as management and mitigation of natural hazards. Therefore, the InSAR technique is one of the effective ways for doing this strategy.
The development of multi-representation media based on instagram on temperature and heat materials
Authors: Jatmiko A , Mila M , Irwandani I , Anwar C , Taher A , Sari P M 
Published: July 2020

Abstract
This study aims to develop instagram based multi-representation media as an alternative to online learning, knowing the feasibility of Instagram-based multi-representation media as an alternative to online learning, Knowing the attractiveness of the Instagram-based multi-representation media as an alternative to online learning. This is a research and development type research. The instruments used in this study were questionnaires using the Likert Scale and non-test instrument data analysis using descriptive data analysis techniques. This study discovers that Instagram-based multi-representation media on temperature and heat material is appropriate to be used in the learning process, the feasibility of Instagram-based multi-representation media on temperature and heat material, according to experts, is highly feasible. This research proves that this Instagram-based learning media is effectively used as an alternative online learning media. As one of the evidences that in the 21st century online-based media is very needed and sought after by students, especially in high school students.
The effect of chemical commitments with exposure to gamma irradiation dosage and save time on test attraction and pullet limits of HDPE pack
Authors: Ratna I , Soenarto Y , Seputera H 
Published: July 2020

Abstract
This study aims to determine the effect of gamma irradiation doses and time of storage on the mechanical properties of HDPE packaging plastics, and to apply gamma irradiation techniques to improve the mechanical quality of materials, especially plastic-based products. Packaging plastic is the most popular packaging material used, many businesses choose plastic as packaging for their products Research Place for Polymer laboratories, Isotopes and Radiation Technology Application Centers, National Nuclear Energy Agency, Pasar Jumat, South Jakarta and Mechanical Test Laboratory of the faculty of Engineering, UHAMKA Pasar Rebo, East Jakarta. To determine the resistance of packaging plastic to gamma irradiation, the effect of gamma irradiation dosage and storage time on the mechanical properties of HDPE plastic packaging were carried out. The research will be conducted with Cobalt-60 gamma radiation sources at irradiation doses of 10, 15, 20, 25, and 30 kGy with a dose rate of 6 kGy / hour, then some irradiated plastic footage is stored at room temperature for 0 and 5 weeks. The mechanical properties tested were yield strength, tensile strength, and elongation at break using the strograph R1 tensile test tool. Gamma irradiation caused yield strength, tensile strength and elongation in the A brand HDPE packaging plastic increased from 0 to 5 kGy, then decreased by 5.31% at a dose of 10 kGy and then continued to increase to a dose of 25 kGy. The optimum increase occurred from doses 15 to 20 kGy, as much as 12.00%. For plastic B, the breakout extension (Eb) continues to increase as the irradiation dose increases to 30 kGy. The optimum Eb increase occurs from a dose of 0 to 5 kGy, at 9.80%. Increased mechanical properties are caused by free radical species formed during the irradiation process, so that a cross-bond is formed between HDPE plastic packaging molecules. While the decrease occurs due to the weakening of the cross bond between the HDPE packaging plastic molecules.
The effect site analysis based on microtremor data using the Horizontal to Vertical Spectral Ratio (HVSR) method in the Bandar Lampung City
Authors: Haerudin N , Rustadi  , Alami F , Yogi I B S 
Published: July 2020

AbstractBandar Lampung is the capital of Lampung Province which is crossed by faults, one of the faults that crosses Bandar Lampung namely the Panjang Fault or commonly called the Tarahan Fault, it is making the Bandar Lampung to be a potential earthquake area. Over the past 20 years many large earthquakes have rocked Indonesia, especially in the western part of Indonesia, such as Aceh, Nias, Padang, Bengkulu, Tasikmalaya, and Ciamis. Lampung Province is located near the subduction boundary of the Indo-Australian Plate against the Eurasian Plate, and also there is another fault, the Semangko Fault. Therefore, Lampung Province and especially Bandar Lampung have greater potential to the earthquake effect. The potential of this earthquake needs to be carried out by disaster mitigation activities to minimize the consequences that occur due to earthquakes, namely by classifying soil vulnerability by characterizing site effects. This study aims to determine the site effect based on dominant frequency parameters. The study was used 135 microtremor measurement points by using the Ref-Tek 130-SMHR strong motion accelerograph type (3 components). Microtremor data was analyzed using the Horizontal to Vertical Spectral Ratio (HVSR) method in Geopsy software. Based on the HVSR method, the Bandar Lampung City is dominated by soft soil types with a dominant frequency off0<1.33 Hz. It’s shows that Bandar Lampung City has a high vulnerability to earthquakes. Moreover, based on map analysis of the dominant frequency, the areas that have the highest risk are Kecamatan Panjang, Bumiwaras, Telukbetung Utara, Teluk Betung Selatan, Telukbetung Timur, Tanjungkarang Pusat, Tanjungkarang Barat, Rajabasa, Enggal, Langkapura, Kedamaian, Wayhalim, and Kedaton.
The prospective ethnopedagogy-integrated STEM learning approach: science teacher perceptions and experiences
Authors: Abdurrahman  , Ariyani F , Nurulsari N , Maulina H , Sukamto I 
Published: July 2020

Abstract
Regarding the 4.0 industrial revolution, the STEM dimension is very important. Separately, the facts related to the development of ethnoscience in Indonesia are also very closely related to the student learning environment. STEM can play a role as an ‘engaging tools’ in local wisdom-based learning. However, there is no ‘something’ to integrate these dimensions. In this case, this study is focused on developing a preliminary form of product. We design the working framework of ethno-pedagogy-integrated STEM learning approach based on science teacher perception and experience. This study was carried out using a mixed method with a survey and analysis document on science teacher learning tools. The survey results showed that the teacher had utilized several ethno potentials that have developed in the community. The results of the document analysis have resulted in the finding that most teachers did not have a pattern yet for applying STEM learning that was related to local wisdom in their society. The ethnoscience facts that existed in the community from the survey results that had a big local potential to be integrated into STEM learning, for example, could be seen from the many traditional buildings and dances (Physics) and traditional food (Bio-Chemistry).
Artificial intelligence technologies in automation of corporate risk management
Authors: Alchinov A I , Avetisyan K R , Druzhinina T Ya 
Published: July 2020

Abstract
This research focuses on the application of BD technologies and artificial intelligence, implemented in the convergence of neural network bases and open libraries (BigData). The proposed solution in the form of a distributed analysis system and automated corporate risk management is created on the basis of deep learning algorithms. It is effectively integrated into management processes. In addition, it improves the quality and time of decisions made at all levels.