bluuebunny/crossref_metadata_2025_split huggingface dataset:
Implementation of convolutional neural networks to determine lightning location
Authors: Sashiomarda J A , Aji A S , Handoko D 
Published: June 2020

Abstract
Lightning produces not only electromagnetic signals but also thunder sound signal. A new method was proposed to determine lightning location by measure time of arrival (TOA) of lightning electromagnetic signals and thunder sound signal to get lightning distance using Convolutional Neural Network (CNN). These signals were caught by using a set of cell phones. These cell phones collect three main data i.e. the TOA of lightning electromagnetic signals, the TOA thunder sound signal, and the coordinates obtained from Global Positioning System (GPS). In this study, CNN determines thunder sound signal pattern which is recorded by certain cell phone. More than one hundred samples of thunder sound signals were used as data set. Whole data set divide into three categories i.e. training data, validation data, and testing data. The model runs few hours to train the network and then produce a confusion matrix. The matrix consists of several column represents a set of samples that previously predicted by their labels and several rows represents actual labels. The labels are thunder sound and the other sound. After the model created, it is exported to the cell phone so that every time cell phone record a sound signal, the model will predict whether the thunder sound or not. When the model predicts the sound as thunder sound, the cell phones save the exact occurrence time. This determination is very important when the cell phone is going to measure lightning distance between lightning location and cell phone location.
Analysis of magnetic resonance image quality using an in-house phantom: Gamma knife application
Authors: Fauzia A R , Setiadi A R , Pawiro S A 
Published: June 2020

Abstract
Magnetic Resonance Imaging (MRI) is increasingly used for purposes of radiosurgery and radiotherapy planning. This imaging modality can explore the physical properties of tissue with great details, especially for the brain. However, the geometric distortion is reasonably occurred and can make significant differences in certain MR application such as, localization in Gamma Knife Radiosurgery. Therefore, the geometric distortion measurement and correction should be applied. In this study, an in-house phantom was developed to measure not only geometric distortion, but also uniformity and high contrast spatial resolution of MR image. The phantom attached to Leksell stereotactic frame was scanned using 1.5T MRI GE. T1-Bravo and T2-Fiesta scan protocol were applied. Standard MRI phantom, Magphan SMR100, was used as data comparison. The result shows that geometric distortion could not be found either in Magphan SMR 100 or in-house phantom images. PIU of the in-house phantom image generated by T1-Bravo and T2-Fiesta scan protocol was around of 79.57% and 56.39%, respectively. Furthermore, the high contrast spatial resolution of the in-house phantom images was 1.0 lp/cm lower compared to Magphan SMR100 phantom images. For this study, it was concluded that the in-house phantom could be employed to analyze MR image quality, yet still needs some improvements, especially for uniformity module.
Integration of LAPAN’s remote sensing ground station control and monitoring system application
Authors: Syahputra Nasution Ali , Gunawan Hidayat 
Published: June 2020

Abstract
The National Institute of Aeronautics and Space (LAPAN) - Remote Sensing has developed different website-based application systems. The application system is used to control and monitor several series of ground station processes ranging from acquisition, recording, processing, storage, to cataloguing data and remote sensing satellite products. At present these applications are still working separately which are built from various platforms both operating systems, programming, databases, infrastructure and architecture. Therefore, an application system integration solution is needed in order to facilitate and speed up ground station operators to control and monitor the processes that take place and obtain useful and valid information for decision making. The design of this system integration application is done by preparing materials and defining layouts, coding Hypertext Pre-processor (PHP), testing designs, granting domains, and providing hosting. The User Interface (UI) uses a bootstrap framework to display responsive results for each screen size.
Development of ECG sensor using arduino uno and e-health sensor platform: mood detection from heartbeat
Authors: Dioren Rumpa Lantana , Suluh Sallolo , Hendrika Ramopoly Irene , Jefriyanto Wilson 
Published: June 2020

Abstract
Many researcher said that emotion or mood can be detected from physiological changes like the heartbeat. In order to measure human heart activity, we were using tools like Electrocardiograph. The changes on human emotion or mood affect physiology. This paper is part of our research that talked about Analysis of Mood State from Heart Signal during Playing Flappy Bird. In this paper, we will explain how we design ECG tools that could measure or detect the human heartbeat especially that affect by mood changes. E-Health Sensor Platform v2.0 and Arduino Uno were used to build this system. E-Health Sensor Platform v2.0 contains several sensors that can measure the biological state of humans such as heart rate, breathing, skin conductance and many others. This device can operate when connected with Arduino Uno as a microcontroller. Arduino uno role as a liaison between the Platform and the PC via a serial port. We were using C programming languange on Arduino Uno. 100 Hz were sett in programming code so we can read all data from ECG sensor clearly. To visualize the heartbeat signals we were using KSTPlot. This system has successfully read the heart signals of 20 participants. Although there is signal noise but it does not affect the data. The noise can also be removed with a filter.In our next study, the raw data will be analyzed using the HRV method, but this will be discussed in another paper.
Surface temperature changes of the crater of Agung Volcano from Landsat-8 TIRS during 2017-2018 eruption
Authors: Suwarsono  , Triyono D , Khomarudin MR , Rokhmatuloh  
Published: June 2020

AbstractThis paper described the application of Landsat-8 TIRS (Thermal Infra Red Sensor) to analyze the surface temperature changes of the crater region of Agung volcano during early of 2013 until late of 2019. Agung volcano is an active stratovolcano located in Bali island. We processed the brightness temperature from channel-10 of Landsat-8 TIRS during early of 2013 – late of 2019 and analyzed the changes. The results of this research showed that the eruptions that occurred during 2017 - 2018 have indicated highly increasing in the surface temperature of the crater region. The surface temperature changes of the crater region, which can be detected from Landsat-8 TIRS data, can be used as a precursor of an eruption.
Detection of mercury ions using unmodified silver nanoparticles as colorimetric indicator
Authors: Handayani W , Pratiwi N I , Imawan C 
Published: June 2020

Abstract
Detection of the heavy metal presence in an environment requires a rapid and facile method. Silver nanoparticles (AgNPs) can be develop as colorimetric indicator related to their unique characteristics of its LPSR properties. In this research, biosynthetically AgNPs using Diospyros discolor leaf extract used as a colorimetric indicator for detecting Hg2+ ions. The solution color changes that occur when detecting the analyte was observed. The characterization was performed using a UV-Vis spectrophotometer to study changes in the LSPR spectrum of silver nanoparticles when detecting the presence of Hg2+ ions. In addition, the image analysis from Transmission Electron Microscope (TEM) was carried out to determine the shape and size of the AgNPs. The results obtained indicate that there was a tendency for the solution color change from brown to light-brown when AgNPs interact with Hg2+ ions at 500-1000 mg. L−1. This result showed that without modification the biosynthesized AgNPs tend to be selective and sensitive to the presence of Hg2+ ions.
New insight of the implication blood pressure detection differences using aneroid sphygmomanometer and digital blood pressure on medical examination
Authors: Novitasari  , Pratiwi N G , Hidayat S W , Ardiatna W , Hidayat A R , Supono I 
Published: June 2020

Abstract
The quality of medical devices is an important thing to establish the anamnesis, diagnosis and also treatment of patient. Arterial pressure measurement as one of the first indicators in the Hypertension Management Guidelines requires the accuracy as well as their function. Error in the detection of blood pressure should not occur during measurement because the errors will also make failure in determining the diagnosis and therapy for hypertensive patient, related on their hypertensive classification. Clinicians requires accurate medical measurement in order to monitor patients, diagnose diseases and deliver treatments. The failure of detection will certainly have diverse effects. Preliminary studies have shown that differences in results that are generated by two types of blood pressure devices, aneroid sphygmomanometers and digital blood pressure. The differences between both devices are 2-11, 6 mmHg for Systolic and 0.8 - 10.3 mmHg for diastolic. This differences led a new insight to the accuracy of blood pressure devices that are widely used in medical circles and the critical value of the accuracy of the sphygmomanometer can be the basis for determining clinical blood pressure classification. Therefore, it is necessary for medical staff to get information about the accuracy of blood pressure devices and its critical parameters in determining blood pressure, it is also necessary for a regulation on a blood pressure classification based on the type and level of accuracy of measuring instruments.
Long-term change in characteristics of cloud vertical structures in Padang from radiosonde observations
Authors: Lismalini  , Marzuki  
Published: June 2020

Abstract
The characteristics of clouds continue to change with climate change, including changes in cloud-base heigh (CBH), cloud tops (CT) and the number of layers of clouds. This work investigates cloud vertical structures in Padang using long-term observations of radiosondes (1988-2019). Height of CBH identified based on the relative humidity threshold. of 84% following the method proposed by several previous studies. The vertical distribution of cloud tops, cloud base has increased over time in all cloud layers, but cloud thickness has decreased. The most commonly observed cloud layer in Padang is one layer cloud (58.87%), followed by two layer cloud (31.12%). The cloud with more layer is also observed but the number is relatively small (10%).
ECG calibration signal database construction based on IEC 60601-2-25 using MATLAB
Authors: Hidayat S W , Ardiatna W , Pratiwi N G , Novitasari  , Supono I , Hidayat A R 
Published: June 2020

Abstract
ECG machines should be calibrated and tested to assure their accuracy. IEC 60601-2-25 standard described signals for calibrating ECG amplitudes and frequencies. The problem was this standard does not clearly describe the formulas of the calibration signals nor the complete database of these signals. The aim of this study was to get a database of ECG calibration signals for testing based on IEC 60601-2-25 standard clause 201.12.1.101. Data were constructed with a series of sinus function in Matlab software to simulate P, Q, R, S, and T segments. The data were visually and statistically compared with the data from commercial CTS database. Data were constructed for 3 different lead of 12 ECG calibration data. Four ECG calibration data with elevation or depletion ST segment were excluded from this study. This study demonstrated that these ECG calibration signals were slightly visually different and statically had differences in some of S wave and most of T wave. This data can be used by designers or manufactures, but for the testing laboratory is recommended using a commercial product.
Metal bioavailability in northern low-salinity water: Case study of lakes in the Kola region, Russia
Authors: Moiseenko T I , Gashkina N A , Dinu M I 
Published: June 2020

Abstract
This paper presents metal speciation calculations that are based on mathematical modelling of chemical reactions in natural waters. Metal concentrations (Hg, Cd, Pb, Ni, Cu, Al, Sr) were determined, and their speciation in water were calculated for 22 water areas in the Kola region. Meanwhile, the accumulation of metals in fish organs and tissues was studied (e.g. whitefish). The biogeochemical activity of metals determines the proportions of labile and non-labile speciation in water. In the distribution zones of non-ferrous industry effluents, metal aqua-ions prevail; during the distribution, the proportions change in accordance with the metal activity. The bioavailability of metal speciation is estimated depending on aqueous geochemical conditions and, accordingly, the speciation of metals (in situ), based on the original studies of the lakes of the Kola region in northern Russia. The connection among the metal contents in fish and water has been identified using multidimensional scaling and redundancy analysis techniques. Using the example of natural conditions in northern low-salinity freshwaters, it is demonstrated that labile Cd, Pb, Ni, Cu, Al, and Sr are the species most bioavailable and able to penetrate fish; meanwhile, the organic complexes of Hg, Pb, and Al have a greater affinity to accumulation in the gills. This study demonstrates the need to correct the approved water quality standards in Russia, taking into account the high bioavailability of metals in northern low-salinity waters.
Architecture for sharing
Authors: Rahman A , Lompoliuw L 
Published: June 2020

Abstract
Architecture bureaus tend to sterilize their office from public activities. They tried to stay untouched from common people, keeping their ‘corporate secrets’ away. This situation creates a closed-environment office from the surroundings and less contribution that might bring better change. Andyrahman’s Co-Sharing Office tries to break the boundaries, standing as an oasis between its surrounding, community, and other architectural bureaus. It provides an opened communal space for experts to students, hamlets, communities, and even craftsmen to share their knowledge and experiences. Bricks as the main material used in this building also revive the spirit of Nusantara Architecture, a contextual architecture in accordance with the culture and values of Indonesia as a Nusantara. While its own name stands for ‘Consciousness of Sharing’, it really does provide a place for everyone to share their interests, and giving a significant impact in many possible forms.
Impacts of partial greenery facade to indoor light illuminance and thermal
Authors: Kristanto L , Widigdo W , Nata S H , Jusuf S K 
Published: June 2020

Abstract
This paper reported a research of facade greenery impacts to indoor light and thermal using two models. The first was without greenery as base case, and the other was with climbing ivy plants as greenery facade. Besides the indoor light illuminance, the air temperature and relative humidity (RH) were measured for thermal data. The experiments were done for west orientation, on dry season in March to April 2018 and for south orientation, on dry season on 14 to 22 November 2018. The result for west orientation, the facade with vegetation reduced more (31.18 to 51.71) % sunlight compared to facade without vegetation. The highest reduction was on 4.30 pm to 6.00 pm. For south orientation, the facade with vegetation reduced more (28.4 to 54.87) % sunlight compared to facade without vegetation. The highest reduction was on 05.15 am in the morning and 4.30 pm to 5.00 pm in the afternoon. Meanwhile, the indoor thermal impact was unsignificant, reduction for air temperature only (0.5 to 1) °C, and only 1 % reduction for the RH. For greenery facades, vegetation impacts to light were determined by its orientation, depth and surface area it covered, while for thermal impact, the bigger LAI was the better.
Empathic urban functions on Malioboro Street in Yogyakarta City, Indonesia
Authors: Saraswati T 
Published: June 2020

Abstract
Malioboro Street in Yogyakarta City, Indonesia, is named as one of the most popular tourism destinations for both domestic and foreign tourists. People even said that they were not yet visited Yogyakarta if they did not visit Malioboro Street. It is the main shopping street in Yogyakarta with its pedestrian ways or sidewalks occupied by street vendors. Yet, this is the attraction of Malioboro Street, bazaar on pedestrian ways. While in other places in the world the function of the pedestrian way just for pedestrians only, in Yogyakarta the street vendors could freely occupy pedestrian ways for the commercial matter. It was likely that there were dynamic, empathic urban functions to this street. With this condition, the question of this study is: What kind of empathic urban functions already executed and implemented to this street? The conclusion was that there were some mutual empathic urban functions implemented between the rulers of Yogyakarta City and the people.
Buk: An inornate folksy construction in creating cultural space
Authors: Yusran Y A , Santoso D K 
Published: June 2020

Abstract
Indonesian society has its unique tradition reflected on how architectural elements are formed according to their own culture. One interesting phenomenon found in Malangsuko Hamlet, Malang Regency, Indonesia is a construction of a low wall called Buk. The buk is a simple construction shaped as a barrier on the sides of the bridge in front of the house that sized to the proportion of human sitting and is usually joined with the house’s fence. This construction eventually used as a place for various activities, such as sitting, chatting with neighbours, or gathering. Almost all houses in this hamlet own the buk. This paper tries to describe this phenomenon descriptively to get a more comprehensive understanding through the point of view of place attachment. This study provides another perspective in considering an inornate construction around society which built folksy by the locals. The result of this study shows that the buk interpreted as a place and has an emotional significance to the culture and its people. The buk has produced the social interaction and harmony between neighbours and be perceived into a cultural space by the community because of the activities therein and interactions formed between each other.
Determine the effect of gamma irradiation towards the growth of two local garlic genotypes
Authors: Pangestuti P W , Sudarsono S , Dinarti D 
Published: June 2020

AbstractGarlic is a diploid plant that is propagated clonal or vegetatively so that the variability is low. Garlic breeding is limited to the selection of genetic varieties. Genetic diversity in garlic can be increased through mutation breeding. The study used Randomized Complete Block Design [RCBD] with the first factor being the two levels of genotypes [Tawangmangu Baru and Lumbu Kuning] and the second-factor is gamma-ray irradiation dose consisting of 7 level doses [0,1, 2, 3, 4, 6,8, and 10 Gy]. 14 treatments were groups 4 times and each experimental unit was planted 20 cloves. The cloves were irradiated according to the dosage of gamma rays in PAIR BATAN. The results showed there was a difference in the growth response of each genotype to gamma rays irradiation treatment. The greater the gamma rays irradiation applied the more it suppresses the growth of plant height, plant weight, bulb diameter, bulbil formation and decreases the living percentage of two local garlic genotypes. Gamma rays irradiation dose up to 2 Gy could increase bulb diameter in the 2 local garlic genotypes. Lumbu Kuning was significantly better growth response than Tawangmangu Baru at the same irradiation dose. The radiosensitivity of garlic genotype to gamma rays irradiation was different. Tawangmangu Baru was more sensitive than Lumbu Kuning. LD50 genotype Tawangmangu Baru was obtained at a dose of 7.5 Gy, LD50 Lumbu Kuning at a dose of 10 Gy.
Toxicity of Bacillus thuringiensis Berl. KJ3P1 and DLM isolates towards pest of oil palm Oryctes rhinoceros [Coleoptera: Scarabaeidae]
Authors: Pujiastuti Y , Sandi S , Arsi A , Sulistyani D P 
Published: June 2020

Abstract
Oil palm plants are industrial plants that generate foreign exchange for Indonesia. Some obstacles are leading to production decrease. One of the important pests is Oryctes rhinoceros [Coleoptera: Scarabaeidae]. Both larval and imago stadia attack oil-palm in immature plants [IP] and mature plants [MP]. The method of controlling Oryctes often use chemical insecticides, in which continuously applications will cause residues in the environment and mortality of non-target insects. Therefore it is necessary to find an environmentally friendly control method that is easy, inexpensive and safe for the environment. The use of entomopathogenic bacteria Bacillus thuringiensis is an alternative. The study was aimed to study the toxicity of two B. thuringiensis isolates from the collection of Plant Protection Department, Faculty of Agriculture, Sriwijaya University [KJ3P1 and DLM isolate codes] on mortality of 3rd instar Oryctes larvae. Experiments were conducted at the Entomological Laboratory, Department of Plant Protection, Faculty of Agriculture, Sriwijaya University from March until May 2019. Bioinsecticide-based B. thuringiensis was made with 2 types of growth media, namely: 1] cow’s bio-urine enriched with 5% molasses, and 2]. Rice washing water enriched with 5% molasses. Treatments were included: 1] DLM5 isolate, 2] KJ3P1 isolate, 3] commercial B. thuringiensis and 4]. without treatment [as control]. The test insects used were 25 individuals of 1st instar Oryctes larvae in each treatment. The results showed KJ3PI isolate that propagated in bio-urine media showed the highest production of B. thuringiensis [5.69 x 106 spores/ml], the highest mortality [76% ] and the lowest LT50 value [5.28 days] as well. The use of agricultural and livestock waste as a medium to multiply B. thuringiensis bacteria may produce high cell and spore production and can be used as bioinsecticides to control O. rhinoceros.
Viability of Lactobacillus plantarum and Lactobacillus pentosus isolated from solid waste of soy milk as candidate probiotic for poultry
Authors: Anggraeni S D , Husmaini H , Sabrina S , Zulkarnain Z , Rossi E 
Published: June 2020

Abstract
This study was aimed to determine the viability of Lactobacillus plantarum and Lactobacillus pentosus isolated from soy milk waste as a candidate for poultry probiotics in vitro. This research was designed in the form of a laboratory experiment descriptively. This study was conducted in several stages, viability test at 37°C and 42°C, viability test at pH 2 and 7, viability test for 0.3% and 0.5% bile salts, viability test of adhesion [hydrophobicity] and antimicrobial activity against pathogenic bacteria [Escherichia coli 0157, Staphylococcus aureusATCC-25293 and Salmonella sp]. The result showed that Lactobacillus plantarum and Lactobacillus pentosus survived and grew at 37°C and 42°C [observation time at 30 and 60 minutes], pH 2, and resistant for 0.3% and 0.5% bile salts. Both bacteria also could inhibit the growth of pathogenic bacteria [active category], which produced clear zones with diameters <30mm. Hydrophobicity test used stainless still found that both bacteria had high hydrophobicity [<40%], 82.82% and 82.71%]. This study concluded that both of Lactobacillus plantarum and Lactobacillus pentosus isolated from soy milk waste have potential as a probiotic for poultry.