bluuebunny/crossref_metadata_2025_split huggingface dataset:
APEL (Anak Peduli Lingkungan) Program: Mathematics and Science Learning Experience through Natural Environmental Preservation for Grade 1 and 2 Elementary School Students
Authors: Rudiyanto  , Kurniati Euis , Fitriani Andhin Dyas , Rengganis Ira , Mirawati  
Published: August 2019

Abstract
This paper discusses conceptual studies related to environmental programs for children or APEL program as one of the programs assumed to provide experiences in learning mathematics and science through the preservation of the natural environment. Nature essentially contains various materials that can be used as learning resources for students and one of them can be used in the APEL program. The APEL program is one of the programs in the development of After School Care services for grade 1 and 2 elementary school students. There are three subtopics that will be elaborated in this paper, including the nature of children’s environmental programs (APEL), types of activities in the APEL program, a general overview of mathematics and science learning for grade 1 and 2 elementary school students, as well as mathematics and science learning experiences. in the APEL program. This article is expected to help readers to find a more comprehensive view of alternative mathematics and science learning for grade 1 and 2 elementary school students that can be done not only in the classroom but also can be done through other interesting activities outside the classroom. The conclusion of the authors in this article refers to the importance of positive experiences in mathematics and science learning for students to support their understanding of the concepts of mathematics and science itself, one of which is through the introduction and preservation of the natural environment.
Technology of Traditional Houses in the New Era in the Education Paradigm
Authors: Suaizisiwa Sarumaha Martiman 
Published: August 2019

Abstract
Home as a home for humans. The Nias community has a traditional house called the omo hada which is built on empirical experience not through education achieved with an education degree as a graduate architect. Traditional houses as cultural heritage become a place of residence for residents. Building this traditional house is designed as a building that is resistant to climate, weather and even to earthquakes. The technology contained in this traditional house can educate the public, who are able to provide evidence of traditional technology that can be aligned with current building construction. This traditional house can be used as a learning medium for students because the structure of the traditional community house building has given an educational value that can survive until now and which has become evidence of civilized society. The existence of the Southern Nias traditional house has provided educational values in building behavior of its people in the new era.
Detection and Extraction Features for Signatures Images via Different Techniques
Authors: Alsuhimat F M , Mohamad F S , Iqtait M 
Published: August 2019

Abstract
Signature is one of the most important features to identify individuals. It represents a specific mark that includes handwritten characters or symbols. Also, signing takes place in a wide range of businesses, such as bank transactions and government documents so it provides a good way to maintain security, in biometric systems. Signature is used as a feature to identify the user by extracting a set of features. Over time, a number of techniques have been developed to identify and extract a set of features from the signature image. Although there are many of these techniques, there is a set of elements that determines the feasibility of using a particular technique, such as accuracy, computational complexity, and the time needed to extract features. In this paper, three widely used feature detection algorithms, SURF, BRISK and FAST, these algorithms are compared to calculate the processing time and accuracy for set of signatures correctly. Three techniques have been applied using (UTSig) dataset; the results showed that the BRISK algorithm got the best result among the feature detection algorithm in terms of accuracy and the FAST algorithm got the best result among the feature detection algorithm in terms of run time.
The Application of Passive Design Chart on the Analysis of Natural Ventilation of Low and Middle Income Flats Case Study Sky View Apartment and ‘Rusunawa’ Manis Jaya, Tangerang
Authors: Chandra B , Trisno R , Gunanta S , Widayati N , Susetyarto B M , Lianto F 
Published: August 2019

Abstract
The biggest environmental problem of this century is global warming where the earth’s surface temperature has increased since the pre-industrial era which damage the environment and threaten human life on earth. CO2 Emission is the most influential cause in global warming from the fossil fuel combustion process. Buildings have great impact towards the increasing of CO2 emission due to the electricity produced by the fossil fuel. On the other hand, Indonesian government has been trying to reduce the housing shortage of vertical housings or flats, specifically for medium and low income families. This study developed passive design charts for architects to design vertical housings which follow passive design principles to save energy consumption and provide living health and comfort. The researchers observed and analysed the design of two medium and low income flats in Tangerang using passive design charts. The research demonstrates that the design of the flats which comply with passive design requirement would not only cause energy savings in electricity, but also provide more comfort and healthy environment.
Mukolitik Activities Test Curcuma Aeruginosa Roxb Towards The Duck Egg White Through In Vitro
Authors: Ramdhani Susan Sintia , Fauziyah Kiki Rizki 
Published: August 2019

Abstract
Indonesia is the rich of natural resources country, a part of society use the plant as medicine toward various disease. One of them is curcuma aeruginosa roxb that contain of chemical saponin to occur the cough especially for cough with phlegm, so many people have used this plant. Mukolitik is some medicines that help to recover of viskosits sputum, especially on lower respiratory track. Methodology extraksi that used is infusa method, that is research method by searching simplisia on pan contain of boiled water, heat on the boiled water almost 15 minutes on the temper. Making of mucus analogue factitious by duck egg white, mukolitik activities test used 5 groups, that are positive control (acetylcysteine), negative control (aqua destillata), and simple test each concentrate 0,1%, concentrate 0,3%, concentrate 0,5%. From the research result show that infusa of curcuma aeruginosa roxb with concentrate 0,1%, 0,3%, 0,5% founded there is mukolitik activities. Infusa curcuma aeruginosa roxb concentrate 0,1% it was reach of positive control.
Measuring of the Population Happiness Index of Bandung City
Authors: Hidayat Yuyun , Purwandari Titi , Sukono  , Subiyanto  
Published: August 2019

Abstract
The progress of development based on economic indicators, is considered not reflect the level of welfare. Happiness Index is an indicator that measures of well-being subjectively is beyond GDP. Happiness Index is a composite index based on the level of satisfaction with the 10 essential aspects of life: health, education, occupation, household income, family harmony, the availability of free time, social relations, housing conditions and assets, the environment and safety conditions. Bandung Regional Development Planning Agency has cooperated with the Laboratory of Quality Control Department of Statistics University Padjadjaran to measure the level of happiness of the population of Bandung. Survey carried out in 30 Districts with the random sampling design that is intended to represent the level of happiness of the citizens of Bandung. Covered 151 villages in Bandung with a sample of more than 2 times than in 2014- SPTK-BPS Happiness index of Bandung in 2015 was 70.60. Calculations using the framework of the American Customer Satisfaction Index produces greater happiness index which is 74. Three aspects of life that have the highest contribution are Employment (11.91%), Social Affairs (11:39%) and Harmony Family (11.28%). The highest happiness index is related to family harmony. Strategic recommendations given are the increase in the program: employment and self-employment, housing, education, increased hedonic level of Affect, increase self-function.
On The Javanese Ethnoastronomy: Time Dimension on the Calendrical Inscriptions on Majapahit Era until Now
Authors: Prabowo A , Tripena A , Sugandha A , Riyadi S 
Published: August 2019

Abstract
The Saka calendrical inscriptions recorded the time journey in its own specific way, such as the use of suklapaksa and kresnapaksa, equipped with saptawara, pancawara and sadwara day names. At the next stage, it is addedd with wuku. During the Majapahit era, the time dimensional recording was expanded to include such elements as naksatra, yoga, karaṇa, muhūrta, dewatā, grahacāra, parweśa, mandala, and rāśi. This article traces the journey of usage of these time dimensions and completes it with the sculpture samples in some inscriptions from Majapahit era or after, and proposes it as the archipelago’s ethnoastronomy.
LC 50 of Rind Durian (Durio zibethinus murr) Extract to Mortality of Aedes aegypti Larvae
Authors: Arrizqiyani T , Hidana R , Sopian M A , Nurpalah R , Meri  
Published: August 2019

Abstract
One of durian parts is its rind which contains essential oil, flavonoid, saponin, cellulose, lignin, as well as 11 starch content. Those content can be used as a larvacide against Aedes aegypti larvae. The aim of this research is to analysis LC50 of durian rind extract to mortality of Aedes aegypti larvae. In this research, we used the experimental method. Aedes agypti larvae are 440 larvae instar III divided into 12 groups which are negative control, positive control, durian rind extract with a concentration of 1%-10%. To identified the influence of durian rind extract to mortality of Aedes Aegypti larvae, data were analyzed using Probit Analysis with the program IBM SPSS Statistic 21.0. On the Probit Analysis, durian rind extract that could kill larvae 50% (LC50) is at concentration 7,76%. Based on that analysis, durian (Durio zibethinus murr) rind extract has an influence to mortality of Aedes aegypti larvae.
Egg Weight and Hen Day Production (HDP) Layer Commercial at High and Low Altitude
Authors: Rahayu N , Widjastuti T 
Published: August 2019

Abstract
The research about “Egg weight and Hen Day Production (HDP) Layer Commercial at High and Low Altitude” was conducted at Bogor district (low altitude) and Majalengka district (high altitude). Location farms in Majalengka (altitude of about 1.200 meters above sea level; the average daily temperature: 15-220C); Bogor (height of about 140 meters above sea level; the average daily temperature 22-310C). This aims to determine the level of egg production (egg weight and Hen Day Production (HDP)). Data collection technique was purposive sampling. The data comes from eight cages in the high altitude and fifteen cage on low altitude. The observed data were analyzed descriptively and t test. The results showed that the high altitude environment (Majalengka) supports the achievement of the egg weight and Hen Day Production (HDP) optimal.
Research and Analysis on Gas Performance Index of Pine Particle Gasification
Authors: Niu Yonghong , Zhang Liqi , Li Yike , Wang Songsheng , Wu Huijun 
Published: August 2019

Abstract
The gasification test was carried out with pine particle as raw material, how temperature and steam flow rate affect gas gasification performance index was studied by using self-made gasification test system platform. The results show that the volume fraction of hydrogen increases, the volume percentage of carbon monoxide decreases and CH4 content decreases with the increase of temperature in steam flow rate of 0.3kg/h; Its the gas volume fraction of the trend is similar with the steam flow rate of 0.3kg/h, but the total gas energy with the temperature increased first and then reduced and the total gas increased by 28393.39KJ/Kg at 800 °C; The steam flow from 0.3kg/h to 0.6kg/h, the low calorific value of gas varies from 10 to14MJ/m3, the increase of the calorific value of gas is 2111. 36KJ/m3.
Performance Analysis of Single Cell Alkaline Electrolyser Using Mathematical Model
Authors: Sanath Y. , De Silva K. , Middleton Peter Hugh , Kolhe Mohan 
Published: August 2019

Abstract
The generation of hydrogen using electrolysis process with integrated renewable energy sources is very important specially in environmental aspects. In this paper, we demonstrate that, the performance of electrolysis process which could be enhanced by decreasing the distance between electrodes while changing the properties of electrodes. At first, two single cell alkaline electrolysers are fabricated using an in-house 3D printer. Thereafter, the best performing cell is selected by considering its performance through different experiments. Finally, the performance of the selected cell is analysed by changing the distance between electrodes and changing the properties of electrodes. Throughout this research study the SolidWorks is used as the design software while using Mathlab Simulink as a modelling tool.
Demand Response Management in the Presence of Renewable Energy Sources using Stackelberg Game Theory
Authors: Singh Pushpendra , Talwariya Akash , Kolhe Mohan 
Published: August 2019

Abstract
A demand response algorithm for electricity trading using renewable energy sources using stackelberg game methodology. Energy consumption is rapidly increasing day by day and to maintain the balance between energy consumption and generation needs solution to generate electricity from renewable energy sources and demand response methodology is essential. Demand response (DR) algorithm maintain the balance and reduce the peak to average energy consumption ratio. Large number of constraints (i.e. number of appliance at consumer end, different consumers, renewable energy sources, electric vehicles, etc.) interface make the DR algorithm complex. Stackelberg game theory is provided the solution based on one leader N follower strategy where leader first decide their best response and followers select their best response on the basis of leaders strategy and then leader again optimize the new strategy. Process is repeat again and again to find nash equilibrium between consumers and utilities. Proposed methodology increase the generation from renewable energy sources and manage the appliances. Simulation results showed that stackelberg game with demand response algorithm is effective for optimal energy consumption control of appliances.
Operational Analysis of Institutional Energy System for Developing a Micro-grid
Authors: Sharma Arvind , Kolhe Mohan , Konara K. M. S. Y. , Muddineni Kapil , Mudgal Ashwini , Garud Shirish , Ulltveit-Moe Nils 
Published: August 2019

Abstract
In most of the institutional buildings solar photovoltaic (PV) systems are used for fulfilling the local energy requirement. In this work, a typical institution with solar PV and battery energy storage is selected for analyzing the system’s operation to fulfil the institutional energy demand. To operate this energy system as a micro-grid, distributed generator is selected for fulfilling the institutional load demand in coordination with PV, battery and during the grid outage time. The operation of distributed generator has improved the system performance and coordinated the contribution among local energy resources e.g. PV energy and battery throughput. In this work, relative analysis of the intuitional energy system with and without distributed generator has been analyzed for annual load profile. It has been observed; the distributed generator is not only useful for supplying the energy to the essential load but also during the grid outage conditions. The analysis shows that if, the grid outage continues for longer period then distributed generator can provide the power to the institutional load and operate as a micro-grid. It has been observed, the battery energy throughput as well as effective utilization of local energy resources can be improved by installing distributed generator. The presented analysis is going to be useful for operating the institutional energy system as a micro-grid with different energy and power management strategies.
Study on wear behaviour of 4Cr4Mo2NiMnSiV die steel at high temperature
Authors: Renheng Han , Ning Li , Huang Yao , Li Zhiming , Bao Ziming , Zhao Chengzhi , Zhang Hexin 
Published: August 2019

Abstract
In this paper, with reference to the composition and properties of widely used H13 hot working die steel, and the amount of alloying elements in the steel is reasonably improved, and a new steel grade of 4Cr4Mo2NiMnSiV die steel is designed. A new process was designed and the wear properties of 4Cr4Mo2NiMnSiV die steel were studied. SEM, EDS and XRD were utilized to observe the microstructure of the worn surface, and the wear products were analyzed to discuss the wear mechanism. Conclusion illustrates the coefficient of friction of cast steel 4Cr4Mo2NiMnSiV gradually increases with increasing temperature. Wear of the 4Cr4Mo2NiMnSiV die steel is mainly caused by spalling and high-temperature oxidation. The surface oxidation products of high temperature wear samples are Fe2O3 and Fe3O4, and spalling debris caused by fatigue cracks is blocky and a small amount of long flake oxide. The oxide film generated during the high temperature wear process effectively reduces the wear of the material. Through comparison experiments, it is found that the 4Cr4Mo2NiMnSiV die steel of martensite and bainite structure has the best wear resistance, followed by martensitic alloy steel, and the wear resistance of H13 steel which is involved in comparison is lower than that of alloy steel.
Application of Design for Six Sigma (DFSS) In Sustainable Product Design: A Case Study on an Electric Kettle
Authors: Hassan Mohd Fahrul , Chandra Mohan Tillak R , Ismail Al Emran , Taib Ishkrizat , Mahmood Salwa , Kafuku John Mbogo 
Published: August 2019

Abstract
Sustainability is one the most crucial aspects currently focused by competitive companies who are coerced to consider their companies environmental, social and economic performance as requirements for product design. The intricate philosophy of designing physical objects, products, built environment and services to comply with the principles of social, economic and ecological sustainability is called sustainable product design. The main of this study is to improve product sustainability using Design for Six Sigma (DFSS) approach. This research primarily focuses on reviewing current sustainable product development approaches, developing a new framework to incorporate Design for Six Sigma into Sustainable Product Development and to conduct a case study on a product using this new framework. The chosen product is an electric kettle. An electric kettle is usually subjected to more extreme usage and physical damage than normal kettles. Most original internal components are very hard to come by in the replacement parts market making it a difficult product to repair and extend its life of use. The design tools used in this new framework are survey methodology, Quality Function Deployment (QFD), morphological chart and weighted rating method, SolidWorks 3D modelling and Sustainability Analysis besides DFM and DFA analysis software. Through applying the new framework under the DFSS approach a new electric kettle concept has been generated and it has been proven to be more sustainable than its predecessors proving that the new proposed framework is suitable for use in sustainable product development.
Microstructure mechanism of the hydroxyapatite densification process
Authors: Selimin M A , Lee T C , Haq R H A , Idris M I , Abdullah H Z 
Published: August 2019

AbstractHydroxyapatite (HA) is a well-known materials used as biomaterials in various applications. Numerous studied had been done for unlocking the pros and cons of this material. Sintering process has been used for extraction of pure HA that have similar Ca/P ratio to human bone mineral. This study aims to investigate the effect of sintering temperature on the properties of synthetic HA as well as to develop the mechanism of this densification process. Synthetic HA powder (Sigma-Aldrich #04238) was mixed together with binders, namely polyvinyl alcohol (PVA) and polyethene glycol (PEG) in wet mixing condition using ball mill. Pressed HA (15 g, 65 mm x 12 mm) was sintered with temperature ranging from 1000°C to 1200°C with heating rate and cooling rate of 10°C/min. It has been found that, pure HA was obtained when the HA was sintered with temperature ranging from 1000°C to 1200°C. The thermogravimetric analysis showed that there are there were two mass loss stages on the heating process from room temperature to 1250°C; 100-500°C (dehydroxylation) and 680-1080°C (decomposition). From the microstructure data, the mechanism of the densification process of HA was developed.
Performance evaluation of wearable antenna printed using syringe-based deposition system on fabric
Authors: Khirotdin R K , Mahadzir M A , Seman F C , Dahlan S H , Hassan N 
Published: August 2019

Abstract
Wearable antenna is recently known as part of clothing for communication purposes. Syringe-based deposition system had been proven capable of printing functional antenna structure but the printed antenna performances have not been discussed in details especially on resisting bending under various angles, curvature radiuses and wet conditions. Hence, this paper discusses the performance of printed antenna under various bending angles, curvature radiuses and wet conditions. The effect of several bending angles, curvature radiuses and wet conditions on resonance frequency, return loss and radiation pattern were discussed and compared accordingly with simulation. The antennas were observed to resonate best at frequency of 1.571 GHz as expected and the return loss obtained was at -20 dB that is 30% more than simulation which offers better performance. The radiation pattern obtained was as predicted since larger magnitude for the main lobe was produced than the side lobe. The antenna exhibited exceptional elasticity as it resists bending up to 30° angle and 5 cm of vertical convex curvature radius. Polyester fabric performed as a good candidate for textile wearable applications and water had only minor effect on antenna performance makes the proposed antenna suitable for humid condition.