bluuebunny/crossref_metadata_2025_split huggingface dataset:
The mathematics education department students’ ability in mathematical literacy for the change and relationship problems on the PISA adaptation test
Authors: Yudhi Anggoro Antonius , Julie Hongki , Sanjaya Febi , Andy Rudhito M , Putu Wiadnyana Dewa 
Published: December 2019

Abstract
One of goals of this research was to describe the mathematics education department students’ ability in mathematics literacy for change and relationship problem on Programme for International Students Assessment (PISA) test. The procedures of this research were (1) adapt the PISA test, (2) validate the PISA adaptation test, (3) ask seven students from mathematics education department to solve PISA adaptation test, and (4) describe bachelor students’ solution profile. There were (1) three change and relationship problems, (2) four space and shape problems, (3) two uncertainty problems, and (4) four quantity problems. The type of this research is a design research. Subjects of this research were seven bachelor students of mathematics education department. The research results were as follows: (1) level four achieved by one student (14.29%) in problem number 2b.4; (2) level three achieved by (a) six students at problem number 2a, (b) five students at problem number 2b.2; and (c)three students at number 2b.3 and 3; and (3) level two achieved by three students at number 3.
Development of student worksheets based on Realistic Mathematics Education (RME) oriented to mathematical reasoning
Authors: Arsoetar N , Sugiman S 
Published: December 2019

Abstract
Student worksheets in schools have not been fully developed based on contextual problems that are close with student environment. Therefore, students thinking skills have not facilitated. Based on these problems, the purpose of this study is develop student worksheets based on RME that can facilitate students to improve mathematical reasoning. This research is development research that uses Plomp development model. The subject trial of this study are 31 students class VIII of Junior high school in Wonosobo. Validity assessment instrument is a validation sheet. Practical assessment instruments are teacher and student assessment sheets, also learning implementation observation sheets. The effectiveness assessment instrument is mathematical reasoning test. Data analysis was carried out by converting quantitative data into qualitative data. The results showed that student worksheet validity score was 95. Practicality based on the teacher’s assessment with a score of 37, the results based on students assessment have an average score of 62.35. Average of learning achievement is 95.37% and the results of mathematical reasoning test which shows that 96.55% of students complete the minimal mastery criteria. Therefore, student worksheet who developed is suitable for mathematics learning activities and can be used to improve students mathematical reasoning.
Computer-aided design software for multi-stage amplifiers with bipolar transistors and field effect
Authors: Ramírez-Carvajal L , Sierra-Peñaranda G , Puerto-López K , Guevara-Ibarra D 
Published: December 2019

Abstract
The following article presents computer-aided design software for multi-stage amplifiers with bipolar transistors and field effect. It is composed of two units: a design and analysis unit that allows for step-by-step introduction of polarization and small signal values, the type of transistor to be used (bipolar or field effect) with their respective characterization values: current gain, thermal voltage, activation voltage, and saturation current, to result in the configurations and values of the resistors; and a theoretical unit that contains complete information on multi-stage amplifiers. A n-stage amplifier design method was developed, represented through a flowchart, and coded using a freely usable programming language. With the software, designs were made and simulated in a computational tool for academic use endorsed by the scientific community. The result for all variables evaluated was an average error of less than 2%. The research concludes that this software allows an effective design process of multi-stage amplifiers with bipolar transistors and field effect in a short time, it also allows changing the resistance values obtained for commercial values and calculating the error when implementing the circuit being a useful tool in the experimental area.
RECENT ADVANCES IN EXTRACTION OF CLINACHANTHUS NUTANS: A REVIEW
Authors: Khalid Abduljabar Mustafa , Farihan Kasim Khairul , Hadi Ma’Radzi Akmal , Soffalina Sofian Seng Noor 
Published: December 2019

AbstractInterest in the development of extraction of phytochemicals compounds fromClinacanthus nutanshas increased in recent years due to its potential applications in food, chemical, and pharmaceutical industries. The quality and yield of the phytochemicals are greatly influenced by the extraction method employed as well as other factors. This paper provides an up-to-date overview of traditional (maceration, infusion, and soxhlet), with modern methods (pressurized hot water extraction, supercritical fluid extraction, ultrasound-assisted extraction, and microwave-assisted extraction) to extract phytochemicals compounds fromC. nutans. Problems associated with conventional extraction methods have led to a demand for alternatives and indeed several new extraction methods have been developed and refined in the last two decades that can efficiently extract a great variety of valuable bioactive compounds.
Utilization Of Cow And Organic Waste As Organic Waste Empowerment Solution
Authors: Yunita Anggraeni , Karmawan  , Sumar  
Published: December 2019

Abstract

Bukit Kijang Village is one of the villages that is classified as young in the Namang Bangka Tengah District. one of the flagship programs of the Bukit K.ijang village, which is farm-based agriculture on ex-mining land. To achieve the success of the program, it is necessary to make appropriate solutions for waste management to support the progress in agriculture. Village farms have 9 adult cows and 1 turtle calf so that cow dung produced is quite a lot. To overcome the problem of cow waste and household waste, one step is by making biogas from cow dung which can also produce solid and liquid fertilizer and utilization household organic waste in making biofertilizers. Mentoring activities were attended by Ladies of Family Welfare Empowerment, villagers and village youth groups. Both products produced are less than perfect due to equipment leakage and lack of shelf life so that the biogas and biological fertilizers that are formed are not perfect. So can’t to test the products.
Development of Web-based Coffee Management Information System to support the Management of Regional Superior Products
Authors: Laumal Folkes E. , Wabang Jhon A. , Suharto Raden S. B. , Plaimo Paulus E. , Ndoloe Lita A. 
Published: December 2019

Abstract
One of the areas in Alor Regency which the majority of people like to drink coffee is South of Alor. Coffee is considered a reliever of fatigue and drowsiness and provides additional energy before activity. The management of coffee in South of Alor is carried out by the Koperasi Beringin using raw materials from farmer groups from surrounding villages and sold in the form of packaging under the name Lonsilar Coffee. So far, Lonsilar’s coffee production process has been using roasted machines, but the administration of the management still uses cash books and sales are limited to cooperative showrooms and souvenirs. Even though in terms of Telecommunications and Information Technology support, telecommunications infrastructure has reached the South of Alor District, moreover the majority of the people have used mobile phones/smartphones as communication media. This condition allows the development of a web-based coffee management information system so that administrative, promotional and sales processes are carried out through the website. The system is built using PHP language structure with database management using MySQL. The interconnection between users, products, and Koperasi Beringin is organized using detailed and integrated diagram algorithms. The system page can be accessed by the admin and user. Users can process transactions when they have passed the registration/registration stage, while the admin has full rights in managing, changing and verifying all processes. The system test results can run correctly according to recommendations in the Data Flow Diagram.
RSA Cryptographic Algorithm using Cubic Congruential Generator
Authors: Khairina Nurul , Khoiruddin Harahap Muhammad 
Published: December 2019

Abstract
In the field of cryptography, the key and procedures for converting messages into secret messages have a very important role. The RSA key is built with a random number generator. The RSA key is made as strong as possible to increase ciphertext robustness. A key that is difficult to crack and requires a lot of time certainly has higher robustness. Two initial variables that are very important in building RSA keys are prime number p and prime number q. In this research, the p and q prime numbers are generated by Cubic Congruential Generator algorithm. The results of this study can be seen by testing the ciphertext robustness. Ciphertext test results that are resistant to cryptanalytic attacks certainly show the strength of the key that is built, including the selection of primes p and primes q. The ciphertext test shows that 90% of the greater primes p and primes q will achieve a higher percentage of ciphertext robustness, and 10 % of the combination from small prime number p with large prime number q is also able to achieve the highest percentage of ciphertext robustness. This proves that the selection of prime number p and prime number q in generating RSA keys really can affect the ciphertext robustness.
Using Spatial Analysis with weighted overlay on selecting area for fisheries agroindustry in Southeast Maluku, Indonesia
Authors: Anselmus Teniwut Wellem , Kahfi Hamid Syahibul , Mario Makailipessy Marvin 
Published: December 2019

Abstract
As a archipelagic region with rich marine biodiversity, the abundance of raw material of fishes and other marine resources are high. This advantage should be capitalized to enhance and spread the welfare of coastal community in the region. Fisheries agroindustry is way to boost sustainable economic of a coastal region. Although, to select the appropriate sub-district as the best suite location for either fishes-based agroindustry and marine culture-based agroindustry have to face a complicated barriers, therefore the purpose of this study is to select the suitable sub-district location as the center of fishery agro-industry in Southeast Maluku Regency based on several related factors such as resource potential, number of fishermen and farmers, number of production per year, supporting infrastructure and transportation. The method used in this study is spatial analysis with ArcGIS with utilizing weight overlay to process all the data based on experts perceptions. The results of this study are expected to be a comprehensive guidance for policy makers in this region in the context of sustainable regional development. The paper offers specific path based on empirical evidence for sustainable development in fisheries sector of Southeast Maluku District.
Jigsaw using animation media for elementary school
Authors: Rahmatina  , Kenedi A K , Eliyasni R , Fransyaigu R 
Published: December 2019

AbstractThis research is motivated by the need for innovation in the learning process in the 4.0 Industrial Revolution era. The purpose of this study is to determine the effect of jigsaw cooperative learning using animation media for elementary school students. This research is quasi-experimental using posttest only. The results show a significant positive effect of the application of jigsaw cooperative learning by using animation media towards the learning outcomes of elementary school students. The implication of this study is that elementary school teachers can use cooperative learning models using animation media as an effort to improve the learning outcomes of elementary school students in the 4.0 industrial revolution era.
A review Cyber of Industry 4.0 (Cyber-Physical Systems (CPS), the Internet of Things (IoT) and the Internet of Services (IoS)): Components, and Security Challenges.
Authors: AL-Salman Husham I. , Salih Muataz H. 
Published: December 2019

Abstract
The term Industry 4.0 as well as Cyber Physical System has lately gained a lot of consideration among most of the researchers as well as manufacturers while bringing in possible improvement solutions for maintenance of advanced technologies. The term Cyber Physical System or CPS is defined as the addition of computational and physical procedures on the technology of Internet of Things. This prototype helps in ensuring the connectivity of devices and elements with the Internet based protocols which includes the Internet of Services. This pattern of connectivity also enables horizontal services of internal factory through the entire value chain. However, there are several challenges that are faced while maintain the theories and practices of the above protocols. This part of the paper aims at providing a better understanding of the challenges that are faced by these components. The challenges that are faced by CPS are hence described with the help of further researches and are thus summarized from the perspective of energy control, transmission, secure control as well as management control techniques including allocation of system resources and designing of software based models. The paper also reflects the challenges that are faced by IoT from the perspective of communication security, protection of data through sensors and algorithms based on cryptography. Finally the paper also describes the challenges of IoS that are developed through cloud aggregation technology, allowing cloud providers to interact and collaborate in the improvement of cloud security infrastructure including its energy efficiency and reliability.
The review of utilization in natural environment by the teacher as a source for learning science at elementary school in low class
Authors: Astimar N , Helsa Y , Kenedi A K 
Published: December 2019

Abstract
Teacher is the one of the component which is determine of successful for students. Based on observations, The utilization in natural environment was still lack for the teacher as a source as learning science at the begalung sub-distric padang . The study aimed at paving the review as well as as particularize how much the utilization of natural environment can enhance by the teacher as a source of learning science in low class at elementary school. This study employed descriptive, the subject of the study was the 44 teachers joining in elementary school. The data were gotten from observation which later analyzed. The result of study showed that there has lack of utilization in natural environment of the teacher as the source science which amount 46.48% of teachers have used to be natural environment as a source for learning science.
Development of Teaching Material of Final Assignment Subject Based on PBL Using ICT
Authors: Radeswandri  , Budiawan Afiq , Vebrianto Rian 
Published: December 2019

AbstractOpen universities provide educational opportunities for workers, especially teachers who have not met the academic qualification requirements. Final Assignment (FA) is a subject aims to measure advanced thinking skills comprehensively on theory and practice, which is designed based on problem-solving. Therefore, this study designed and developed PBL-integrated FA teaching materials to meet the 2021 Open University Vision and Missions. This was a research and development study of FA teaching materials using PBL-based ICT with the ADDIE model. The study samples were 17 open universities students who were taking the FA subject. The instrument used was a media assessment questionnaire consisting of three aspects, namely the aspect of appearance, ease of use, and efficiency. The Alpha Cronbach value of the questionnaire was 0.82. The results show that the aspect of appearance had min = 3.65; SD = 0.316, ease of use had min = 3.63; SD = 0.247, and efficiency had min = 3.66; SD = 0.292. This means that PBL-based Online Tutorial Materials are excellent to help all students and tutors of the FA subject to develop a good and effective learning process.
Locking Target on Missile System
Authors: Syafruddin R , Devira Ramady Givy , Hidayat Rahmad , Fadriani Hetty , Nataliana Decy 
Published: December 2019

Abstract
The ability to create a locking target on missile system is very limited. For this reason, researchers tried to examine the title Locking Target On Missile System. As a researcher, his goals and hopes from this simple one can become a prototype, the endurance test, then it can be used as mass production. Where the stages of the research method locking target on missile system are through image processing. Here the researchers used Visual Studio 2010 software to create a software application. By processing the image BMP from the camera. In signal processing, there are many ways and languages that can be used, from the results of the author’s experience, first with the C++ language the, for that the author uses the C# language. As for the validation of the signal and the format results obtained are quite slow, then the C# language, the results are quite fast, from all that info sent, the signal reception simulation test is performed with the same application software. Overall research on locking target on missile system which is a real-time control signal application software is then sent via radio.
The Technology Of Sterilizing Brackish Water Become Drinking Water In The Society
Authors: Helmi Muhammad , Nafery Rostian 
Published: December 2019

Abstract
Banyu Urip Village, Hamlet III, Tanjung Lago Sub-district, Banyuasin Regency, South Sumatra. The distance from the Palembang city is ± 40 km. Lack of awareness of the importance of maintaining the personal and environmental health is also seen from the absence of a place for taking clean water. People still take water which is red, smelly, sticky and salty from the river in the dry and rainy season. The results obtained from the technology of sterilizing brackish water into drinking water for the society have succeeded well. The final results of measuring treated water are Ph 7.7 and TDS / TS 794 mg / liter. 1.36 scale turbidity of NTU. TSS 0.2 mg / liter. Specific gravity of 0.1 mg, very clear and odorless. It is expexted that the Science and Technology for society that has been implemented can be a role model for people in other villages, and can form cooperation villager’s community through partners that have been formed.
Application of Natural resource conflict management in resolving the Jakarta Bay reclamation
Authors: Faiqotul Mutia Elok , Herdiansyah Herdis 
Published: December 2019

Abstract
The reclamation of Jakarta Bay is a hot issue which lately still becomes a public debate. This debate is heated by environmental issues, marginalization of certain groups, authority regulation as well as corruption in this reclamation project. Some central and provincial government institutions take different stances on the issue. The objective of this research is to describe stakeholder perception in Jakarta Bay Reclamation. This research uses a mix-method approach which is quantitative and qualitative. Data is obtained from in-depth interviews with stakeholders who are 3 experts from central government and 3 experts from the provincial government. Furthermore, the data analysis is conducted with AHP to find out the perception of stakeholders about the causes of the complexity of the Jakarta Bay reclamation conflict. The results of the analysis show that environmental damage issues are not the first concern for the stakeholder. Central government considers a conflict of Jakarta Reclamation is mainly caused by the existing laws and regulations (27.6%). In contrast, the provincial government considers the main cause of the Jakarta Bay reclamation conflict rests on the management authority of the Jakarta Bay reclamation (28.7%).
Increasing agricultural risk to hydro-climatic extremes in India
Authors: Sharma Tarul , Vittal H , Karmakar Subhankar , Ghosh Subimal 
Published: December 2019

Abstract
Indian agriculture is globally well-documented to reflect the impacts of changing climate significantly. However, climate adaptation efforts are often hindered due to the inadequate assessment of coupled human-environment interactions. In this study, we propose a novel unified country-level framework to quantify the decadal agricultural risks derived from multiple hydro-meteorological exposures and adaptive consequences. We identify, for the first time, that rice and wheat risks have increased in the recent decade, with wheat at a twofold higher magnitude than rice. Increasing crops risk is found to be predominantly driven by the decreasing number of cultivators; in particular, the wheat risk is also attributed to increasing minimum temperatures during the crop growing season. We provide convincing evidence indicating that the hydro-climatic hazards related to precipitation extremes and droughts are specifically alarming the crops risk as compared to temperature extremes. These observation-based results highlight the sensitivity of India’s agriculture and the risk associated with multiple agro-ecological and climatic components. We recommend these findings to facilitate the informed planning of adaptive measures and ensure sustainable food security of the nation.
Adoption of improved biomass stoves in Kenya: a transect-based approach in Kiambu and Muranga counties
Authors: Karanja Alice , Gasparatos Alexandros 
Published: December 2019

Abstract
There is a wide consensus within policy, practice, and academic circles that the adoption of modern cooking options can benefit sub-Saharan Africa. Numerous studies have examined the various demographic, socioeconomic and institutional factors affecting the adoption of clean cooking options. However, most such studies did not properly consider how geographic and environmental factors and fuel availability can affect stove adoption. In this study we use a transect-based approach, from an area of high fuelwood abundance (a state forest) to an area of high fuelwood scarcity (the semi-arid interior of Muranga county) and a peri-urban area with many fuel options (the peri-urban area of Kiambu county). We survey 400 randomly selected households along the two transects from enumeration areas used in the Kenyan national census to understand how factors intersect to affect the adoption of improved biomass stoves as primary stoves. A probit analysis suggests that stove adoption depends not only on demographic and socioeconomic factors (e.g., income, education), but also on geographical and environmental factors that reflect biomass availability and accessibility, and market access. Female-headed households tend to have lower rates of improved biomass stove adoption, largely due to lower income and related enabling factors (e.g., education, land size). Through path analysis we identify that such households can improve their opportunities to adopt improved biomass stoves through better access to credit services and participation in social groups. Overall, this study suggests the need for non-uniform and spatially explicit stove promotion strategies informed by fuelwood availability and accessibility, and market access considerations. Such strategies that are conscious of local contexts could catalyze the large-scale adoption of clean cooking options in Kenya, and elsewhere on the continent.