bluuebunny/crossref_metadata_2025_split huggingface dataset:
First-principles calculations of Stark shifts of electronic transitions for defects in semiconductors: the Si vacancy in 4H-SiC
Authors: Bathen Marianne Etzelmüller , Vines Lasse , Coutinho José 
Published: November 2020

Abstract
Point defects in solids are promising single-photon sources with application in quantum sensing, computing and communication. Herein, we describe a theoretical framework for studying electric field effects on defect-related electronic transitions, based on density functional theory calculations with periodic boundary conditions. Sawtooth-shaped electric fields are applied perpendicular to the surface of a two-dimensional defective slab, with induced charge singularities being placed in the vacuum layer. The silicon vacancy (V
Si) in 4H-SiC is employed as a benchmark system, having three zero-phonon lines in the near-infrared (V1, V1′ and V2) and exhibiting Stark tunability via fabrication of Schottky barrier or p-i-n diodes. In agreement with experimental observations, we find an approximately linear field response for the zero-phonon transitions of V
Si involving the decay from the first excited state (named V1 and V2). However, the magnitude of the Stark shifts are overestimated by nearly a factor of 10 when comparing to experimental findings. We discuss several theoretical and experimental aspects which could affect the agreement.
Explanation of core ion cyclotron emission from beam-ion heated plasmas in ASDEX Upgrade by the magnetoacoustic cyclotron instability
Authors: Liu Lunan , Ochoukov R. , McClements K.G. , Dendy R.O. , Bobkov V. , Weiland M. , Bilato R. , Faugel H. , Moseev D. , Salewski M. , Zhang Wei , Zhang Xinjun , Zhu Yubao , Chapman B. , Zalzali A. 
Published: November 2020

Abstract
Bursts of ion cyclotron emission (ICE), with spectral peaks corresponding to the hydrogen cyclotron harmonic frequencies in the plasma core are detected from helium plasmas heated by sub-Alfvénic beam-injected hydrogen ions in the ASDEX Upgrade tokamak. Based on the fast ion distribution function obtained from TRANSP/NUBEAM code, together with a linear analytical theory of the magnetoacoustic cyclotron instability (MCI), the growth rates of MCI could be calculated. In our theoretical and experimental studies, we found that the excitation mechanism of core ICE driven by sub-Alfvénic beam ions in ASDEX Upgrade is MCI as the time evolution of MCI growth rates is broadly consistent with measured ICE amplitudes. The MCI growth rate is very sensitive to the energy and velocity distribution of beam-injected ions and is suppressed by the slowing down of the dominant beam-injected ion velocity and the spreading of the fast ion distribution profile. This may help to account for the experimental observation that ICE signals disappear within ∼3 ms after the NBI turn-off time, much faster than the slowing down times of the beam ions.
Control and Realtime Monitoring System for Mushroom Cultivation Fields based on WSN and IoT
Authors: Wajiran  , Riskiono S.D. , Prasetyawan P. , Mulyanto A. , Iqbal M. , Prabowo R. 
Published: November 2020

Abstract
In this article, it is explained the design of control and monitoring systems for many mushrooms cultivation fields (kumbung) in realtime based on Wireless Sensor Network (WSN) and the Internet of Things (IoT). This system is designed to control and monitor temperature and humidity parameters in each kumbung. The system consists of several node boards in each kumbung and master board. The main components of the node board consist of Arduino Uno which is connected to XBee, DHT22 sensor, actuator in the form of a sprayer-pump, a blower and lamp. The main components of the Master board are Raspberry Pi and Xbee. Data is sent from each node to the Master using the WSN network with data packages that contain temperature and humidity data with the ID of each kumbung. The master board sends all kumbung data through a WiFi network to the Firebase realtime database that can be monitored via a smartphone. Kumbung control is performed by an actuator at each board node. The actuator keeps the temperature betwen 26-29°C and the humidity betwen 70-90%RH for mushrooms in the phase of body formation. The results of this system prototype experiment show that the functionality of the system is running well, although there is an average error 0,465°C for temperature readings and an average error 2,67% for humidity readings. This error is still in the DHT22 working area based on the datasheet.
Experimental Study of Tidal Flat Formation on Coastal Peat
Authors: Adietama Genta Putra , Sutikno Sigit , Yusa Muhamad , Yamamoto Koichi 
Published: November 2020

Abstract
Tidal flat formation on the coastal peat is a unique phenomenon that has occurred at western part of Bengkalis Island, Riau Province, Indonesia. It was identified that coastal erosion problems have been occurring continuously during at least the last 30 years along the north part of Bengkalis Island. The materials have moved to the south part of Bengkalis Island, and sedimented as tidal flat. Research on tidal flat in the peatlands has not yet been developed, so this study aims to carried out an experiment study in order to understand the tidal flat formation on coastal peat. The method used in this study is a simulation of tidal flat formation with several wave variations. Simulations were carried out using laboratory experiments with coastal peat samples and sea water at the wave channel. The results show that the waves and the velocity greatly influence the tidal flat formation and its formation rate. In addition, the formation of peat tidal flat was also influenced by velocity settling of the peat particles. The energy for tidal flat formation was the minimum energy generated by waves, that cannot transport the particles move back by reverse flow.
Improving Prospective Elementary Teachers’ Mathematical Communication Skills with Active Learning Approach of MIKiR
Authors: Sari Intan Kartika , Putra Zetra Hainul , Alim Jesi Alexander , Mulyani Eva Astuti , Alpusari Mahmud , Hermita Neni , Wijaya Tommy Tanu 
Published: November 2020

AbstractThe purpose of this research is to reveal the implementing of an active learning approach ofMIKiRon prospective elementary teachers’ mathematical communication skills. This study was a quasi-experiment with pre-test and post-test one-group design. The participant for this study were 41 second-year prospective elementary teachers from a public teacher institution in Pekanbaru, Riau, Indonesia. The results of the study, it was found that the average pre-test score is 74.05 and an average post-test score is 82.51 from a maximum score is 100. The score increased by 8.46, with an overall average N-gain value of 0.34 with medium criteria. This study showed that the active learning approach ofMIKiReffectively improved prospective elementary teachers’ mathematical communication skills. This approach also provided opportunities for learners to discuss and understand mathematical contents better.
A Comprehensive Prototype Design of Hydroelectric Power Station for Floating-Cages Energy Resources
Authors: Fakhrudin Z , Irawan Dedi , Irfan Zul , Islami Nur 
Published: November 2020

Abstract
This paper reported the design of a prototype of hydroelectric power station integrated in floating cages which will permanently developed in crowded of floating cages in Kampar river. The prototype was successfully created by using acrylic material with the thickness of 5mm. The examination Results shows that the prototype was working normally resulting the average voltage of 2.5 volt. Three difference wheel diameters were used for testing, and it found that the electrical current was increases as the increment of the diameter size. A designed sensor system works based on a microcontroller for detecting the water flow velocity, from the observation, the flow was 2.42 m/s. Certainly this prototype is very useful for designing the hydroelectric power station in area of floating cages at Kampar river.
Recombinant Anti-Thrombin Production from Saccharomyces Cerevisiae: Large Scale Trends Based on Computational Predictions
Authors: Pacheco S , Niño L , Gelves G 
Published: November 2020

Abstract
Anti-thrombin III is a protein performing anticoagulant function by preventing coagulation process and currently it is used in critical Covid-19 patients. In the present research, recombinant anti-thrombin production at large scale is simulated using SuperPro Designer. Special emphasis was analysed for the elucidation of required unit operation at industrial scale. Saccharomyces cerevisiae yeast is fed with 50 g/L carbon source together with 1.9 g/L amino acids and 6.7 g/L nitrogenous yeast base. All yields are taken from current references. The process is divided in two stages: upstream and downstream. In upward flow a total 11.2 g/L of biomass is calculated. Subsequently, anti-thrombin extraction and purification strategies are proposed. Interestingly, a purified anti-thrombin protein is obtained at 312 mg/L. Based on the latter, the large scale plant proposed in this research can reach 26 vials/hour produced at a concentration of 250 mg. Also productivity and prefeasibility are evaluated and annual production of 205,920 anti-thrombin vials is calculated. Therefore, each vial has a production cost of 180 USD. Based on the authors knowledge, information regarding antithrombin large scale trends are scarce. That is why this is the motivation of this research to perform a computational estimate for the large scale operations involved for the anti-thrombin production.
Environmental Sanitation and Stunting (Study of the Role of Women in Stunting Intervention)
Authors: Saputri Rini Archda , Anggraeni Diana , Sujadmi  , Sopamena Nurlaila 
Published: November 2020

AbstractStunting is the major malnutrional problem in Indonesia. The prevalence of stunting toddlers in Indonesia is 30.8% in 2018, equivalent to around 7 million Indonesian toddlers. This condition is a threat to the quality of Indonesia's Human Resources (HR) in the future because stunted children have weak cognitive abilities and are vulnerable to disease so that they are at risk of low productivity in the future. Various attempts have been made by the government to reduce the prevalence of stunting, but the achievements generated are still far from the target. This study aims to review and analyze other dimensions of stunting alleviation interventions that have been the focus of the government, namely; the role, access, and control of women to the occurrence of stunting, a dimension that does not receive much attention because the issue of stunting has so far been more related to the dimensions of health, nutrition, and nutritional adequacy. The research method uses a qualitative approach with a gender perspective to see the role of men and (in this context specifically) women related to stunting. The analytical model used is the Moser method of gender analysis conducted at the grassroots / micro-level (household and community). The results showed that the role of women in a productive, reproductive, and social manner was very strategic and decisive towards the occurrence of stunting. However, to be able to carry out these roles to the maximum, strong access and control is needed for women. Support from policy, economic, social, cultural, and law are factors that are needed by women, both as mothers and expectant mothers to be able to carry out their roles optimally and fully. Thus, affirmative policies are needed that can support women's access and control so that the stunting rate can be reduced.
Interactive Multimedia Development on KPK and FPB Material
Authors: Alim J A , Sari I K , Alpusari M , Sulastio A , Mulyani E A , Putra R A , Hermita N 
Published: November 2020

Abstract
This development research aims to: 1) produce interactive multimedia learning products for prospective elementary teacher students in low grade mathematics courses; 2) determine the level of feasibility of the product being developed. The research method refers to the Allesi & Trollip development model which is grouped into three development steps, namely: a) planning; b) design, and c) development comprising components including standards, ongoing evaluation, and project management. This research produces interactive learning multimedia products in the form of Flesdis. The results of the product score validation criteria are very valid (workable).
Early Detection of Dengue Hemorrhagic Fever (DHF) using Feed Forward Neural Network with Gravitational Search Algorithm Optimization
Authors: Prasetyo Nur Azmi , Yasin Hasbi , Warsito Budi 
Published: November 2020

Abstract
Health is an important part of life, it is also an indicator for progress of country development. But, there are still some health problems found in Indonesia, one of it is dengue infection. Data from the Department of Health states that in 2016 there were 77.96 per 100,000 pupolation (201,885 cases) with mortality rate is 0.79% (1,585 death cases). Clinical symptoms of dengue infection is so resemble with some other fevers, then the right diagnosis is very needed. Feed Forward Neural Network (FFNN) can be used to do an early detection to Dengue Hemorrhagic Fever (DHF) sufferer with training process to the existing data. In this research, we experiment the Gravitational Search Algorithm (GSA) as the Optimation Method to find the optimal weights of the FFNN. We use the medical record data of DHF sufferers who are getting treatment at Tugurejo District Hospital, start from January 2016 to Desember 2016. The accuracy of this research is 0.73188.
The Behavior of People at Pekanbaru City Indonesia in the Use of Household Pesticides to Control Pest of Settlement
Authors: Sutikno Agus , Saputra Rachmad , Rasyad Aslim , Amin Bintal , Mahatma Radith 
Published: November 2020

Abstract
Most people in Pekanbaru City (92.86%) are involved in using pesticides to control household pests for over five years. Furthermore, the driving factors of this behavior include the availability of the market in the settlement vicinity and the lack of public knowledge, which leads to an improper utility that does not comply with the provision on the packaging label. This research is a descriptive study. The results showed the absence of compliance to stipulated provisions in the behavior of the Pekanbaru community regarding the use of household pesticides to control settlement pests. Hence, the reports show the daily use of pesticides, determined by pests' appearance in certain places within the house, while the container management was properly carried out by storing it in a special place and out of childrens’ reach. Therefore, there is an enhanced desire to use non-pesticide pest control methods in community settlement.
Image Classification of Pandawa Figures Using Convolutional Neural Network on Raspberry Pi 4
Authors: Wisnudhanti Kartika , Candra Feri 
Published: November 2020

Abstract
Pandawa is one of the stories in wayang show consisting of five figures: Yudhistira, Bima, Arjuna, Nakula and Sadewa. This research is using Convolutional Neural Network (CNN) and apply it on the Raspberry Pi 4 to classify the puppet figures. CNN is one of the methods that can be used for classification of image data that has more than two classes. The network architecture used can classify Pandawa figures, using 1000 dataset with a size of 100 × 100 consisting of 80% training data and 20% test data. The network architecture has 3 convolution layers and 3 hidden layers, as well as 1 layer output. The classification results on the training data have an accuracy rate of 97.88% while test data has an accuracy rate of 96.5%.
The Effect of Sugar Concentration and Time for Nypa Sap Fermentation into Acetic Acid using Acetobacter pasteurianus
Authors: Chairul  , Muria Sri Rezeki , Rohaya  
Published: November 2020

Abstract
Acetic acid is widely used in cosmetics, manufacturing chemicals, food additives, or in some countries used as drinks. So that the needs for acetic acid increase every year. Acetic acid can be produced by fermentation using raw nypa sap containing sucrose, glucose and fructose. Factors affecting the fermentation process are the substrate sugar concentration and fermentation time. The purpose of this study was to determine the effect of increasing sugar concentration, the effect of fermentation time on bioethanol concentration, and the effect of fermentation time on acetic acid concentration. The fermentation process was carried out in two stages, namely Bioethanol Fermentation using S. cerevisiae with variations in sugar concentration of 149 g/L and 202 g/L and fermentation time of 1,3 and 5 days. The bioethanol produced was continued by the acetic acid fermentation process using A.pasteurianus with variations of the fermentation time of 1, 3, 5, 7 and 9 days. The maximum conditions for acetic acid production were 202 g/L sugar concentration, 39.47 g/L bioethanol substrate, and the 9th day fermentation, at acetic acid concentration of 36.71 g/L and yield 71.37%.
Measuring Critical Thinking based Multimedia on Buoyant Force Concept: A Preliminary Design
Authors: Mahbubah K , Habibulloh M , Hermita N , Samsudin A 
Published: November 2020

Abstract
This study aims to develop critical thinking test (CTT) based multimedia to assess students’ critical thinking on buoyant force concept. The buoyant force has been developed utilizing ADDIE method with five stages which are analyze, design, develop, implement and evaluate. The respondent the third semester of the academic year 2020/2021 at the Program of science Education, Universitas Islam Lamongan. The ADDIE developing steps has been utilized to describe comprehensively from the stage of analysis program up until the evaluation stage. CT based multimedia has measured pre-service science teachers, indicator of critical thinking has high score is recognize the need for more information in drawing conclusions that got 25% and the lowest indicator is Predict the probability of event got 15%. Based on data analysis, it can be concluded that CT based multimedia could able to effectively measure pre-service science teachers’ critical thinking. The CT based multimedia has been developed by macromedia flash software.
The Effect of Street Vendors’ Activities in City Park on the Functions of Park as a Public Space
Authors: Rahman Boby , Noviani Aisa , Rosyadea Rizka 
Published: November 2020

Abstract
Park becomes an important element in a city development, according to its functions as an open space to support ecological, economic and social functions. One activity supporting a park in developing countries is the existence of street vendors. Such activity will result in troubles for many parties if it is not paid a good response to deal with. This study is aimed at examining the effect of street vendors on the functions of park as a public space. It used a qualitative methodology in addition to literature review analysis technique and content analysis to examine various case studies in big cities of Indonesia. The result is that street vendors’ activities have positive impacts on social and economy, but negative ones on ecology.
Penetration Resistance of Bengkalis’ Peat From Hand Cone Penetration Test
Authors: Yusa M , Koyama A , Yamamoto K , Sutikno S , Muhammad A , Qomar N 
Published: November 2020

Abstract
In situ soil investigation on peat is not easy due to its low bearing capacity and high compressibility. Traditional in-situ test such as cone penetration test (CPT) are quite heavy which make movability on peatland difficult and slow. This study described the measurement of peat penetration resistance using portable hand cone penetration (HCP) test. The location of this study is at Bengkalis’ Island. Visual observation and laboratory tests show that peat at the site, mainly, can be classified as sapric and low ash. Dry unit weights range from 1.06-1.54kN/m3 with specific gravity range between 1.19-1.81. HCP test show that penetration resistance range from 84-674kPa with majority of it is at 300kPa. Estimated unconfined compression test suggested soft to medium consistency. Equivalent penetration resistances of full CPT are between 110-910kPa. There is tendency that higher fibre content may increase penetration resistance.
Groundwater Flow Analysis at Coastal Peatland Area of Bengkalis Island Using Paper Disk Velocimeter (PDV)
Authors: Pribadi Muhammad Agung , Sutikno Sigit , Yamamoto Koichi 
Published: November 2020

Abstract
Bengkalis Island is an island with about 89% of its land area consisting of peatlands. Because of the land use conversion from peat swamp forest to plantation and shrubs, the island has experienced massive degradation, such as abrasion, subsidence and land fires. The abrasion at western area of Bengkalis Island has occurred since the last 30 years with an abrasion rate up to 30 m/year. The previous studies showed that this is because of unbalanced hydrological conditions. The more advanced research related to groundwater flow impact on degraded peatland in Bengkalis Island is important in order to understand the mitigation alternative. To study the groundwater flow on the peat coast of Bengkalis Island, this study used Paper Disk Velocimeter (PDV) for measuring at 2 monitoring wells. The measurements were carried out at a depth of 2 m and 5.5 m and a depth of 2 m, 3 m and 4 m for Well-1 and Well-2 respectively. All measurements were carried out for 3 times on different month. This research found that the groundwater slope dropped significantly near the coastal line. This made the groundwater discharge to the coastal area become higher that may cause failure on the coastal cliff. The failure was identified as the initial phenomenon of the abrasion mechanism in the Bengkalis coast.
Preliminary Investigation of Groundwater Resources in the Wetland Area, Dumai
Authors: Islami Nur , Irianti Mitri 
Published: November 2020

Abstract
The wetland area in Sumatra island is commonly covered by peatland with the varies depth. Most common problem faced in these areas is the groundwater resources of the shallow aquifer which are not safe for human consumption. In the other hand the wetland area near the coast are intruded by the seawater. This study is actually a preliminary investigation of the groundwater resources in the surrounded wetland area of Dumai city, Indonesia. In this preliminary study, the groundwater samples were collected and measured their in-situ physical characteristics. Furthermore, the groundwater in the shallow aquifer is contaminated by varies amount of seawater content that are indicated by the higher value of TDS. However, the sea level intrusion in the shallow aquifer is not directly correlated with the distance from the beach line. Generally, the groundwater is not safe for human consumption at the distance of 3-5 km from the beach line.
Lighting of Museums and Art Galleries
Authors: Piana E.A. , Merli F 
Published: November 2020

Abstract
A museum is a place where people can explore and learn the past, the present and the future of culture and science. Amongst the other technical systems, the lighting equipment must satisfy a number of requirements. For each project, lighting designers must face challenges in order to encompass the given specifications in a single lighting concept: protection of the artefacts, economic convenience, architectural constraints and, last but not least, the creative ambitions of the artist. This paper analyses the lighting environment of a real art gallery with the aim to identify a satisfactory solution in terms of enjoyment, artefact preservation and energy consumption. By means of a simulation software, suitable general and spot lighting devices are chosen to fulfil the requirements whilst avoiding damages to the artefacts, and lighting parameters are obtained to evaluate the proposed solution. The work shows that advanced LED technologies can be effectively used to modify a museum lighting environment and turn it into the classical gallery archetype.