bluuebunny/crossref_metadata_2025 huggingface dataset:
Impedimentos à execução do orçamento impositivo e o prejuízo ao planejamento da atividade do Estado
Authors: Shiohara Lubke Mariane Yuri , Blanchet Luiz Alberto
Published: April 2021

As emendas constitucionais n. 86, de 17 de março de 2015, n. 100, de 26 de junho de 2019 e n. 105, de 12 de dezembro de 2019 instituíram e disciplinaram modalidades e formas de execução do chamado “orçamento impositivo”, caracterizado pela obrigatoriedade de execução de programação orçamentária proveniente de emendas parlamentares individuais e de bancadas de Estado ou do Distrito Federal. Destaca-se o papel que as emendas parlamentares exercem para a governabilidade do País no contexto do presidencialismo de coalizão e que a criação do orçamento impositivo não foi capaz de afastar o clientelismo, provocando ainda, uma interferência no planejamento da atividade do Estado, especialmente no tocante à execução de políticas públicas.
El dictamen de congruencia como mecanismo de coordinación en el Derecho urbanístico mexicano
Authors: Jiménez Dorantes Manuel
Published: April 2021

En México, la ley urbanística señala que la Entidad federativa emita el dictamen de congruencia sobre el planeamiento urbanístico del Municipio. La escueta configuración legal deja abierta la posibilidad de la intromisión excesiva de la autoridad estatal en el modelo urbanístico aprobado por el Ayuntamiento. Este trabajo expone los lugares de riesgo para el Municipio y aporta una posible solución para delimitar las posibilidades del dictamen de congruencia estatal.
Vulnerabilidad administrativa del Estado hondureño en situaciones de emergencia con la habilitación de las contrataciones directas durante la pandemia del COVID -19
Authors: Paz Macias Jenssy Carolina
Published: April 2021

En esta investigación se presenta un análisis jurídico desde la visión del Derecho Administrativo relacionado con los actos ejecutados por funcionarios públicos en aplicación de la normativa vigente respecto al estado de emergencia, cuya experiencia ha dejado ver la vulnerabilidad administrativa del Estado hondureño en la contratación directa en la que se visibiliza inexperiencia, falta de controles fiscales antes y durante las contrataciones, así como  negligencia jurídica de los actores señalados en ley que deben actuar en los procesos de aprobación y desembolso de los capitales nacionales, observando acciones  a posteriori a las contrataciones directas que facilitaron el incumplimiento del control fiscal, las cuales han generado confusión y cuestionamientos en la agenda pública, por considerar una inversión multimillonaria, insegura, dudosa con la falta de garantías visibles de aseguramiento de los fondos pagados a terceros. El análisis jurídico conlleva la identificación y descripción de las debilidades de la normativa vigente hondureña y las recomendaciones para su reforma y creación de leyes especiales complementarias, que le garanticen al pueblo hondureño un mejor manejo de los recursos financieros frente a fenómenos de la magnitud de los efectos del Covid 19.
The Impact of Seasonal Differences on Fish Species Diversity, Price Fluctuations, and Fishermen Welfare on Baron Beach Gunung Kidul
Authors: Anggara David Safri , Rudin Nur Ahmad
Published: April 2021

Gunungkidul Regency has 73 km of coastline and potential to be developed as center of economic growth based on the utilization of marine fisheries resources. Baron Beach is one of the tourism destination, also has function for fish auction (TPI) and market that caught by fishermen. Seasonal differences affect the conditions of tides and have impact on fishing activities. This makes important for conducted this research. Therefore, this study was conducted to determine the effect of seasonal differences on diversity of fish species and welfare of fishermen on Baron Beach. This research is a qualitative descriptive and was carried out with observation and in-depth interviews with traders, fishermen, and consumers. Data analysis was performed using the Miles and Hubberman methods. The results showed the harvest season occurred in the transition season and mid-rain on October until January. The diversity of fish species at most in this season are Euthynnus affinis, Elagatis bipinnulata, Katsuwonus pelamis, Scomberomorus sp. and Selar crumenophthalmus. Diversity at most on the rainy season is Pampus argenteus, while in the dry season are Stolephorus sp., Elagatis bipinnulata, and Auxis rochei. The method of selling fish was done through fishermen, brought to the fish auction to bought by collectors, traders, and consumers. The selling price of fish on traders and collectors has doubled from the fishermen. The abundance of crops has an impact on welfare of fishermen, consumers and traders. The harvest season also has positive impact on social, tourism and culture. The conclusion from this study is the seasonality affects to diversity of fish species, selling price is relatively stable, and has positive impact on society in terms of economic, social, cultural and tourism.
Comparative Study of Homogeneous Class and Heterogeneous Class of Participation Level and Result Learning in System Reproduction Classes of SMA/MA
Authors: Wati Kharisma Arby Ristiana , Sulistiyawati
Published: April 2021

The study is intended to determine how the differences between classes of homogeneous and class heterogeneous on the level of participation and the results of learning in class XI of the system of reproduction. The research is including field research with the approach of quantitative use study comparisons. Intake sample used technique purposive sampling and using three classes. the class is heterogeneous, class homogeneous male (M) and class heterogenous female (FM). Instruments retrieval of data using the data test multiple choice (posttest) and questionnaire level of participation. Mechanichal analysis of the data using a test statistic one way ANOVA and test Tukey as the test continued. The results of the study indicate that 1) the level of participation in class heterogeneous, class homogeneous male and class homogeneous female is not there differences in views of the value of the significant of 0,122 which means 0,122 > 0,05 and Fcount of 2,185 <Ftable. 2) The result of study on class of heterogenous, class homogeneous male, class homogeneous female there are differences in view on the value of significant of 0,000. Wich means that 0,000 <0.05 and Fcount amounted to 52,657> Ftable, based on test Tukey class that has the value of the results of studying the best is the class of homogeneous male.
Anatomy of Trabeculae Lumbar Vertebrae On a Bats (Megachiroptera)
Authors: Hidayah Alfi , AR Alif Nailil Muna , Chirstanty Agatha Yolanda , Luthfi Muhammad Jafar
Published: April 2021

Bats are the only mammals that can fly. Because of their ability to fly, making the tension received by the bat's spine comes from the front and back.Spongy bone, also known as cancellous bone or trabecular bone, is a very porous type of bone found in animals. It is highly vascularized and contains red bone marrow. Spongy bone is usually located at the ends of the long bones (the epiphyses), with the harder compact bone surrounding it. It is also found inside the vertebrae, in the ribs, in the skull and in the bones of the joints. Spongy bone is softer and weaker than compact bone, but is also more flexible. It is characterized by a lattice-like matrix network called trabeculae (Latin for little beam) that gives it its spongy appearance. Observation of trabeculae can be done by removing the flesh, muscles, and all the tissues attached to the lumbar vertebrae bone. Then the lumbar vertebrae was sanded and to know the anatomy of the trabeculae, it was done by observing the lumbraris vertebrae using a binocular microscope and taking pictures using a camera. Then the structure is analyzed. The observations showed that the anatomical structure of the lumbar vertebrae trabeculae in bats are stressed by tension must be withstood, a ligament being as strong for its weight.
Detection Pork Oil and Palm Oil Using Light Intensity Parameters
Authors: Amaliya Virginia Fahriza , Rakhmadi Frida Agung
Published: April 2021

To distinguish between pork oil and palm oil, we can use the characteristics of light absorbtion from the material. So, in this research we set a detection method using light intensity as the parameters. Equipment that we used are LDR sensors and red LED as the light source. Pork oil and palm oil were varied into two types of treatment, namely oil with no filtering and a single filtering. In this experiment we got that pork oil has higher light intensity than palm oil. It means that palm oil more absorb the light than pork oil. So, we conclude that light intensity can distinguish the type of oil. Further study is needed so we can develope more accurate and simple detection tool to determine the type of oil especially pork oil in order to give information about halal food for muslim.
Information System Configuration Based On Sentence Similarity (Case Study: Islamic Boarding School ERP)
Authors: Syawab Moh. Husnus , Nasution Melsa Khairani , Ardhillah Safrina , Yaqin Muhammad Ainul
Published: April 2021

Information systems are an organized combination of people, software, hardware, communication networks and data sources in the collection, replacement, and collection of information in organizations. This configuration is required in a boarding school information system that uses SOA (Service Oriented Architecture). The configuration of the boarding school information system is based on a boarding school job description that is calculated in terms of the similarity of sentences with the business process model. Calculating the similarity of words is calculated using Word Similarity for Java (WS4J) using three semantic similarities namely wu palmer, lin, and path. From this calculation, the results of the business process model will emerge. In this study, the effect of similarity sentences in the job description of the cleanliness section is compared with the security section of the Islamic boarding school displaying that sentence similarities is almost similar, although in some job descriptions they still have a far different value for similarity.
The Development of Web-Based Paperless Office System Using CodeIgniter Framework Case Study of Lembaga Pengembangan Cabang Ranting Muhammadiyah
Authors: Bagus Yerezqy , Rahman Arif , Sugiantoro Bambang
Published: April 2021

Lembaga Pengembangan Cabang Ranting (LPCR) Muhammadiyah Yogyakarta is an institution that often conducts correspondence between institutions. The activity of recording incoming and outgoing mail data at LPCR Yogyakarta still uses the manual method by recording in a ledger. In addition, the length of time required in the letter of submission is also still found in the LPCR. One method that can be used to overcome this is paperless office, where the work environment that uses paper is eliminated or greatly reduced. The use of paperless office in addition to saving paper can also improve the efficiency of data processing and search because the form is already digital. This system was built using the Unified Software Development Process (USDP) development method, with the Unified Modeling Language (UML) modeling. In the initial process, the initial phase is an analysis of requirements for software requirements. Furthermore, at the elaboration stage, the maturation of concepts that have been analyzed in the previous phase is carried out. Then at the development stage, system development is done with the PHP programming language and MySQL database using the CodeIgniter framework. The final phase is the transition carried out alpha testing and beta testing. The alpha test results of the system built went well, while for the beta test results at the Administrator level, the results were 86.8% Strongly Agree and 13.2 Strongly Disagree, 86.4% Strongly Agree and 13.6% Strongly Disagree of Headoffice users, 91.3% Strongly Agree and 8.7% Strongly Disagree from the results of the operators' user answers and 96% Strongly Agree and 4% Strongly Disagree from the results of the Guest user. Based on the test results, the system built is feasible and can be used by LPCR Yogyakarta.
Manufacture and Sensor’s Characterization for Optimizing the Manufacture of Resistance Sensors Based on Honeycomb and Honey Market
Authors: Arum Ayu Sakila , Cholidina Dyah Imas , Rakhmadi Frida Agung
Published: April 2021

This research aims to identify resistance sensors based on honeycomb and honey market. It was conducted in three stages, namely sensor design, sensor manufacturing and sensor characterization. The sensor scheme has been made by software fritzing. The tools used in the sensor manufacture are PCB sensors, resistors and copper wire. The tools used in sensor characterization are provided by power supply, CRO and samples. Sensor testing is done by varied the sample into 6 variations accurately 5ml, 10ml, 15ml, 20ml, 25ml, and 30ml. Data generated from the sensor in the form of voltage. Repetition on each volume variation was 10 times. Then, It was be processed by calculating the compatibility and the average of the voltage produced along with its uncertainty. The results showed the average of the voltage generated with the uncertainty at 5ml volume (9,052 ± 0,001) V and (8,682 ± 0.017) V, for volume of 10ml (9,040 ± 0.025) V and (8,531 ± 0.050) V, for volume of 15ml (8,947 ± 0.073) V and (8.230 ± 0.018) V, for volume of 20ml (8.999 ± 0.073) V and (8,209 ± 0.007) V, for volume of 25ml (8.967 ± 0.080) V and (7.689 ± 0.048)V and for volume of 30ml (8,925 ± 0,040) V and (8,284 ± 0,018) V. Repeatibility has produced on this sensor was obtained from two samples, honeycomb by 90.919% and honey market by 94.432%. Based on the results obtained from the calculation, it can be determined that the transfer function was V = 9.06853x-0.0045828571 and V = 8.72453x-0.0259257143. The linear correlation coefficient obtained by 95.9%. This research will be used for optimizing the manufacture of resistance sensors with good characteristics.
How Can Playfair Cipher Secure Data?
Authors: Azizah Luthfi Nur
Published: April 2021

Cryptography plays an important role in the digital world today. Information can be mathematically secured by the message sender with a key. The intended sender's privacy and recipient's information will be protected from eavesdroppers. The purpose of this paper is to find out how to secure data using a playfair cipher with a 16 X 16 matrix. This algorithm will provide the power to playfair cipher. The encryption and decryption process in cryptography uses keywords that have been agreed upon by the sender and recipient of the message. Entries of this matrix are large and small alphabet letters, numerical characters, and other special characters to construct the contents of the matrix. The characters refer to ASCII from 0 to 255.
The Effect of Papain Enzymes and Probiotic Addition on Feed Towards The Catfish Growth Performance, Feed Utilization Efficiency and Survival Rate in Biofloc Techniques
Authors: Hidayatiningtyas Kumala , Bintari Siti Harnina , Iswari Retno Sri
Published: April 2021

The success of catfish farming (Clarias sp.) is influenced by feed and water quality. The low feed utilization results in high feed production costs. Alternative use of feed using the enzyme papain and probiotics, the papain enzyme is able to hydrolyze proteins into peptides to increase the utilization of protein in feed by the body. In addition, increased digestibility is done by the addition of probiotic bacteria such as Lactobacillus sp., Saccharomyses sp., Azotobacter sp., Streptomyces sp., Aspergillus sp., Trichoderma sp. into food that can increase feed digestibility and nutrient absorption. Water quality is one of the factors that caused a low survival rate of fish. Biofloc technology utilizes microbial activity that can convert organic waste intensively to form a flock that used by fish as a food source. This study aims to examine the effect of papain and probiotics enzyme addition in feed towards the growth, efficiency of feed utilization and survival rate of catfish using biofloc techniques. The research used a Completely Randomized Design (CRD) by five treatments using biofloc maintenance media and five treatments using non-biofloc, each repeated three times. This research used catfish with a density of 1 head /L kept for 4 weeks as a test animal, treatment P0 (test feed 0.0 gr / kg papain enzyme and 0 mL probiotics), P1 (test feed 0.25 gr / kg papain enzyme and 1 mL probiotic), P2 (Test feed 0.25 gr / kg papain enzyme and 2 mL probiotics), P3 (Test feed 0.5 gr / kg papain enzyme and 1 mL probiotic), P4 (Test feed 0.5 gr / kg of papain enzyme and 2 mL probiotics). The results showed that the addition of the papain and probiotics enzyme in feed with the best dosage was P2 with biofloc maintenance media that gave a real effect (P <0.05) on the efficiency of feed utilization and survival, but had no significant effect (P> 0.05) on growth of catfish (Clarias sp.). Water quality in the maintenance media is in a decent range for the maintenance of test fish.
Effect of Maize Flour and Lactobacillus acidophilus Towards Save Tempe Soybean
Authors: Faizah Laela Noor , Bintari Siti Harnina , Iswari Retno Sri
Published: April 2021

Tempe is a traditional Indonesian food product made from soybeans (Glycine max) which is processed through the process of fermentation by mold. Tempe has constraints in its utilization, namely in its short shelf life and has a perishable nature. The purpose of this study was to determine the effect of corn flour on the storability of tempe by the addition of Lactobacillus acidophillus. This research method uses true experimental with two factors. The first factor was Lactobacillus acidophillus 1.5% (v / w) as treatment and 0% (v / w) as control. The second factor is the concentration of corn flour (w / w) respectively 0% (w / w) (T0), 0.4% (w / w) (T1), 0.8% (w / w) (T2) and 1.2% (w / w) (T3). The results showed that the addition of 1.5% Lactobacillus acidophillus and 0.8% corn flour to soybean tempeh was able to increase the shelf life of soy tempeh for a maximum among others 4 days.
Aedes aegypti L. Controlling based on Lethal MosquitoTRAP Modification (LMM) in Mataram City
Authors: Sazalia Munawir , Soesilohadia RC Hidayat , Wijayantia Nastiti , Wibawa Tri
Published: April 2021

Dengue hemorrhagic fever is a global public health problem that caused an Arbovirus. Mataram city was a high infected area in West Nusa Tenggara Province, which included six sub-districts. The objective of this study is monitoring and controling dengue virus vectors based on temporal patterns using mosquitoTRAP. This research was explanatory in the cross-section design in 102 households (indoor and outdoor) as an observation site. Based on mosquito collection in October 2018 until March 2019, the amount reached 2,396 mosquitos such as Aedes albopictus (41%) and Aedes aegypti (59%). The mosquitos collection based on observation site showed no significant difference number (P=0.863). However, the number of mosquitos in temporal pattern showed significant difference number of first, middle, and end rain season (P = 0.001). Mosquitoes population at rain season had shown an increase until March 2019. Therefore, monitoring and controlling Aedes mosquitoes is crucial for prevention of dengue hemorrhagic fever case.
Predicting Breast Cancer: A Comparative Analysis of Machine Learning Algorithms
Authors: Prastyo Pulung Hendro , Paramartha I Gede Yudi , Pakpahan Michael S. Moses , Ardiyanto Igi
Published: April 2021

Breast cancer is the most common cancer among women (43.3 incidents per 100.000 women), with the highest mortality (14.3 incidents per 100.000 women). Early detection is critical for survival. Using machine learning approaches, the problem can be effectively classified, predicted, and analyzed. In this study, we compared eight machine learning algorithms: Gaussian Naïve Bayes (GNB), k-Nearest Neighbors (K-NN), Support Vector Machine(SVM), Random Forest (RF), AdaBoost, Gradient Boosting (GB), XGBoost, and Multi-Layer Perceptron (MLP). The experiment is conducted using Breast Cancer Wisconsin datasets, confusion matrix, and 5-folds cross-validation. Experimental results showed that XGBoost provides the best performance. XGBoost obtained accuracy (97,19%), recall (96,75%), precision (97,28%), F1-score (96,99%), and AUC (99,61%). Our result showed that XGBoost is the most effective method to predict breast cancer in the Breast Cancer Wisconsin dataset.
Development and Quality Analysis of Laboratory Management Information System Based on CodeIgniter Framework
Authors: Nafi’ah Rahmawati , Dewanto Adi , Sugiantoro Bambang
Published: April 2021

The objectives of the research are designing and create a laboratory information management system (SIMLAB) based on codeIgniter framework, and ensure the software quality based on Web-QEM standarts. It was built to help facilitate the process of laboratory management in SMK X in Yogyakarta City. The problems that occur in SMK X are the recording of inventory, borrowing and returning equipment is still processed manually on books that have not been able to support service flexibility and data security. The type of this research is Research and Development (R&D) with waterfall development model. The phases of this development model include analysis, design, coding, and testing. The analysis stage include literature study, field studies, user analysis, software analysis, and hardware analysis. Planning stages include database design using ERD, interface design, and modeling with UML. Coding stage uses the Code Igniter framework for back-end, Bootstrap framework as a supporting front-end framework, and My SQL relational database. Testing stage uses the quality standards of Web-QEM. The results of this research are (1) laboratory management information system developed by some features: laboratory information, scheduling, guest books, inventory, loan, return, and maintenance equipment. (2) The quality test result of functionality characteristic gave 100% (very suitable), reliability gave 100% (satisfy), usability gave 83.4% (very suitable), efficiency characteristic using YSlow gave 95.2% (very suitable), and  using Page Speed gave 95.7% (very suitable) with 0.6 seconds for load time (accepted). Base on the test could be concluded that the laboratory information management system meets the quality standards of Web-QEM.
Profile of Skills Students in Resolving Problems Trigonometry Based on Personality Type Myer-Briggs
Authors: Anggreini Dewi , Saputra Daffit Krisna
Published: April 2021

The problem in this study is the low ability of students to solve problems. That is because students only refer to the examples of questions given by the teacher so that students have difficulty if given questions that are not the same as the examples given by the teacher. Diverse problem solving solutions are needed because students still find difficult to draw conclusions from the questions they have worked on. The purpose of this study is to describe students' ability to solve trigonometric problems in terms of the personality type of Myer-Briggs, namely ISTJ, ESFJ, ESTP, INFJ, ISTJ, ISTP, ESTJ, INTP and ISFJ. This research is a type of descriptive research using a qualitative approach. Methods of data collection using the MBTI questionnaire, math problem solving ability test questions and interviews. The results showed that the ISTJ personality type fulfilled 4 indicators of problem solving very well, while the personality types of ESFJ, ESTP, INFJ, ISTJ, ISTP, and ESTJ met 4 indicators of problem solving well, and for personality types ENTJ, INTP, and ISFJ were sufficient good by meeting 3 of the 4 indicators of problem solving. The results of the study can be used to improve students' mathematical problem solving abilities by further enhancing the positive characteristics present in students. Can inspire students to better understand the type of personality they have in themselves and hone their abilities to be more improved.
The Development of Subject Specific Pedagogy with SETS Vision to Improve Science Process Skills and Learning Motivation
Authors: Prastyo Erwin
Published: April 2021

The aims of this research are to develop Subject Specific Pedagogy with SETS vision that consist of syllabus, lesson plans, students worksheets, and evaluation sheets that can be applied in teaching learning to develop science process skills and learning science motivation for seventh grade students in Junior High School. The study was a Research and Development (R&D) with students in class VII MTs Darul Ishlah Sukorejo as a subject of study. The research start from September to November 2019. The study began with a literature study and field study to obtain information about the problem faced at school, and followed by planning, drafting and validating product by experts. The result shows that Subject Specific Pedagogy with SETS vision feasible to use in teaching and learning based on the validation result from lecturer, teacher, and student response. The Subject Specific Pedagogy with SETS vision potential for develop the science process skills and learning science motivation of students.
Didactical Design Realistic Mathematics Education Based on Green Mathematics in Direct & Indirect Proportions Concept at Junior High School
Authors: Bintara Idvan Aprizal , Herman Tatang , Hasanah Aan
Published: April 2021

This research is motivated by students’ learning obstacles in direct & indirect proportions concept through literature studies and preliminary studies conducted by a researcher. Furthermore, the environmental care attitude of students is low. The purpose of the research is to create the alternative didactical design; a didactical design Realistic Mathematics Education based on Green Mathematics consisting of four lesson designs arranged due to learning obstacle in direct & indirect proportions concept, as well as relevant learning theory.  Four lessons were implemented for 40 seventh grade students in Lembang who have not learned yet about the concept. The research method used in this study is qualitative research as Didactical Design Research. There are three stages in this study; the first stage is prospective analysis or didactic situation analysis producing hypothetical didactic design, the second stage is metapedadidactic analysis as implementation of hypothetical didactic design, and the third stage is retrospective analysis that produces empirical didactic design. The result shows that hypothetical didactic design can minimize the students’ learning obstacles in direct & indirect proportions concept; almost all student showed environmental care attitude is well; and almost all student showed positive attitude towards mathematics learning using hypothetical didactic design. Based on the results of the research, developed didactical design that can be applies as one of the alternative for teaching materials in direct & indirect proportions learning concept at schools that have the same characteristics.
The Effect of Siputspin Learning Media on Symmetry Material in Grade V Elementary School
Authors: Maulani Maghfiroh Izza , Putri Ashma Nur Hanifah Heninda , Faddliyah  , Afifah Novia Nur , Pangestu Aji
Published: April 2021

Mathematics is a subject that is clearly understood. Likewise, mathematical material seems difficult, one of which is about rotary symmetry. This material is difficult because it requires extra understanding, logic and imagination. For this reason, a siputspin learning media was made to facilitate students. This research was appointed because the author wants to know how much influence the media of siputspin learning makes it easier for fifth grade elementary school students to understand the material of rotating symmetry. The author uses an experimental method whose data source is obtained consisting of interviews, observations, questionnaires, and book reviews. The subjects of this study consisted of several fifth grade elementary school students in Yogyakarta. Determination of the subject is done by random sampling. Data collection techniques are done by interviewing and filling in questionnaires with students and direct observation in class. The data of this study were analyzed descriptively quantitative and qualitative. The results showed that the siputspin learning media can make it easier for students to understand rotational symmetry material. Nevertheless, there are still a number of things that need to be improved from the siputspin learning media to be more effectively applied.
The Effect of Peer-Support to Students’ Academic Stress in Boarding School with House System
Authors: Rizkita Muhammad
Published: April 2021

The purpose of this research is to describe the level of academic stress and peer-support among students; in boarding school with house system; and to analyze the role of peer-support to students’ academic stress in boarding school with house system. Peer-support is measured by Child and Adolescent Social Support Scale-Academic (CASSS-A) with Cronbach α =. 97 (Sonia, 2014) as an independent variable and academic stress is measured by Educational Stress Scale for Adolescents (ESSA) with Cronbach α =.82 (Sun, 2012) as a dependent variable. Data collection was carried out at SMAN Sumatera Selatan as one one of boarding school that implements a house system in Indonesia with 60 out of 300 students as a sample in this research. Researchers use a cluster sampling technique. The result of this research shows that peer-support is on an average level; academic stress is on an average level that analyze by descriptive analysis technique. Simple linear analysis techniques are used as inferential analysis which shows that there is no effect of peer-support to students’ academic stress in a boarding school with house system, in other words, Ha in this research is accepted. As the researcher evaluated the result of this research, self-efficacy found as a mediator variable between social support (peer support, parent support, and teacher support) to students’ academic stress in a boarding school with house system and become a recommendation for upcoming research.
The Importance of Disaster Knowledge in Early Childhood for The Future Investment
Authors: Widyaningrum Nrangwesthi , Nurhadiyanti Arifka Putri , Widana I Dewa Ketut Kerta
Published: April 2021

Disasters carry consequences for humans and their environment. One of the vulnerabilities to disaster is caused by a lack of knowledge of disasters. Indonesia is a region prone to disasters. This is due to Indonesia's position which is surrounded by three world tectonic plates and also located in the ring of fire, the most active volcano in the world. According to data from the National Disaster Management Agency (BPNB), during 2018-2019 there have been 3860 natural disaster incidents. The attitude that needs to be raised in minimizing the existence of a disaster is the anticipatory attitude that is accompanied by knowledge to deal with the disaster. Disaster education is one of the directives of the president in disaster management. In line with this directive, it is necessary to transfer disaster knowledge to the community especially to early childhood. Early childhood is a golden period, where the brain develops very quickly and can receive and absorb any good or bad information. For this reason, the purpose of this article is to examine the importance of disaster knowledge for early childhood. This article was compiled using the literature study. Strengthening disaster knowledge about early childhood is the first step towards realizing a disaster-aware society. Disaster aware society will have a better capacity in dealing with disasters so they are capable of threatening disasters around them. Early childhood is one of the future investments and is one of the vulnerable groups to disasters, it is very important to increase disaster knowledge because Indonesia in the future will be led by today's early generation.
The Effect of Mathematical Language On Learning Mathematics
Authors: Wahyuni Priska , Pangestu Saka Aji , Mursyida Itsna Shalihatus Sabila , Pangestu Aji
Published: April 2021

Language as a communication tool has an important role in interaction between human beings. Language can be used by humans to convey ideas, ideas, desires, feelings and experiences to others. Especially in a learning activity where communication tools such as language must be clearly and easily understood. In learning mathematics, the language of mathematics is very important in helping the learning process. Because to understand mathematical concepts easily requires mathematical language skills. However, the situation on the ground shows that students' understanding of mathematical language is not optimal. This study aims to determine the effect of students' mathematical language on understanding material. So the results of this study can be used by teachers as a reference in teaching mathematics to students and teachers become more concerned with students' mathematical language abilities. The method used in this study is the study of literature, which examines relevant previous studies and concludes based on the results obtained. The results of this study are that if students have understood the language of mathematics well, students can receive and understand the material easily and can increase student interest in learning. So indirectly high mathematical language skills can improve students' mathematical ideas to be more structured and convincing. Moreover, on material related to many symbols such as algebra. In addition, students can receive and understand the material easily and student interest in learning will increase.
Development of Encyclopedia Boyong Sleman Insekta River as Alternative Learning Resources
Authors: Fitriani Rini Dita , Sulistiyawati
Published: April 2021

This study aims to determine the types of insects Coleoptera, Hemiptera, Odonata, Orthoptera and Lepidoptera in the Boyong River, Sleman Regency, Yogyakarta, to develop the Encyclopedia of the Boyong River Insect and to determine the quality of the encyclopedia developed. The method used in the research inventory of the types of insects Coleoptera, Hemiptera, Odonata, Orthoptera and Lepidoptera insects in the Boyong River survey method with the results of the study found 46 species of insects consisting of 2 Coleoptera Orders, 2 Hemiptera Orders, 18 orders of Lepidoptera in Boyong River survey method with the results of the research found 46 species of insects consisting of 2 Coleoptera Orders, 2 Hemiptera Orders, 18 orders of Lepidoptera in Boyong River survey method. odonata, 4 Orthopterous Orders and 20 Lepidopterous Orders from 15 families. The encyclopedia that was developed was created using the Adobe Indesig application which was developed in printed form. Testing the quality of the encyclopedia uses a checklist questionnaire and the results of the percentage of ideals from material experts are 91.1% with very good categories, 91.7% of media experts with very good categories, peer reviewers 92.27% with very good categories, biology teachers 88, 53% with a very good category and students 89.8% with a very good category. Based on these results, the encyclopedia is appropriate to be used as an alternative source of learning.
Use of Mixed Language Codes in Da'wah Ustaz Hanan Attaki on Social Media (Sociolinguistic Studies)
Authors: Nikmah Faridhatun
Published: April 2021

This study aims to explain the mixed code of language and the effectiveness of da'wah on social media. The method used in this study is descriptive qualitative by describing the mix of language codes used by Ustaz Hanan Attaki and the effectiveness of da'wah on social media. The data source in this study is a transcript of Ustaz Hanan Attaki's lecture. Data collection is obtained by listening to video shows, recording data in the form of transcripts, classification by type, and data analysis. The results of the study show that (1) Ustaz Hanan Attaki classifies mixed language codes into two, namely inter-internal and external code mixing, and (2) Ustaz Hanan Attaki's preaching on social media is very effective from a sociolinguistic perspective.
Implementation of the Alternative Model of Bureaucratic Reform in the Magelang City
Authors: Wibawa Samodra , Orbawati Eny Boedi , Koentjoro  , Yusliwidaka Arnanda , Fadlurrahman
Published: April 2021

Bureaucratic reform has entered the second wave based on Peraturan Presiden No. 81 Tahun 2019 about Grand Design Reformasi Birokrasi for the period 2010 – 2025. Based on that regulation, every government institution must improve itself through programs related to the grand design and road map of bureaucratic reform. This study is the third of three studies cunducted in the last three years. In the first study has succeeded in identifying the obstacles experienced by Magelang government in the carrying out bureaucratic reform. Then in the second study, team focused on developing alternative model of bureaucratic reform to address the problems found in the first study. Whereas in the third study, alternative model of bureaucratic reform was implemented for eight months in collaboration with several government institutions in Magelang city. The finding of this study is alternative model of bureaucratic reform was successfully implemented, but the results have not yet reached what was expected. Internally, the commitment of employee is still weak, and externally the lack of public participation.
Cryptography: A Combination of Caesar and Affine Cipher to Conceal the Message
Authors: Wulandari Septi Yana
Published: April 2021

Advances in technology make it easy for humans to communicate with each other. One of them is by sending messages. However, the confidentiality of messages can be hacked by third parties. Therefore, it is necessary to secure the messages sent so that confidentiality can be maintained. One way that can be done to maintain message security is cryptography. Classical cryptography has several types of algorithms including caesar cipher and affine cipher. The purpose of this study is to combine caesar cipher and affine cipher as one technique that can be used to secure messages. This combination is done by changing the plaintext into ciphertext 1 through caesar encryption. Ciphertext 1 is encrypted by affine caesar to produce ciphertext 2. Ciphertext 2 is the message to be sent. Then to change to original message ciphertext 2 is decrypted by affine chiper so that it gets plaintext 1. Then plaintext 1 is decrypted by caesar chiper so that it gets plaintext 2. Plaintext 2 is the message that should be received. The result of this study are a combination of caesar cipher and affine cipher can secure a message sent.
Analysis of Public Opinion on Religion and Politics in Indonesia using K-Means Clustering and Vader Sentiment Polarity Detection
Authors: Mustaqim Tanzilal
Published: April 2021

Religion and politics are two things that are closely related to each other and cannot be separated. Various public responses expressed by various public media such as print media and social media that can be classified as positive, neutral and negative, one of which is using Twitter. Twitter is a microblogging social media that contains many writings with many types from various types of users including posts that contain opinions about religion and politics. This research conducted an analysis process in the form of extraction of hidden insight data, visual analysis and sentiment analysis of public opinion related to religion and politics. The analysis was conducted on 5433 datasets written on Twitter on November 12, 2019. The analysis process began with data pre-processing, data clustering and sentiment analysis. Pre-processing data generates clean data from characters and non-essential data for use in the process of data clustering and sentiment analysis. Data clustering produces extraction of hidden insight data using k-means clustering. Sentiment data analysis uses vader sentiment polarity detection to determine dataset sentiments. The results of tests carried out using jupyter notebook show insight data hidden in the form of 50 unique words that are divided into 5 clusters of 10 words each then the sentiment analysis process is carried out in each cluster. Another result is visual analysis in the form of word cloud and hashtag clustering which shows the dominant words of each piece of data according to sentiment and word count. Also pointed out words that have a frequency of dominant emergence accompanied by word sentiments. The process of analyzing public opinion datasets related to religion and politics using k-means clustering and vader polarity detection sentiments can be done well.
Improvement Approach for Matching PV-array and Inverter of Grid Connected PV Systems Verified by a Case Study
Authors: Omar Moien A. , Mahmoud Marwan M.
Published: April 2021

Correct matching between PV array and inverter improves the inverter efficiency, increases the annual produced energy, decreases the clipping losses of the inverter, and prevent to a large extent the inverter frequent shut downs during clear sunny days of high solar radiation and low ambient temperature. Therefore, this paper presents a new methodology for selecting the appropriate peak power of the PV array with respect to the inverter output AC rated power taking into account the local daily distribution of solar radiation and ambient temperature. In addition, the proposed methodology specifies the appropriate number of PV modules in each string and the number of parallel strings connected to the input of the inverteraccording to its specifications and to PV cell temperature. Mathematically modeling of system parameters and components are presented and used in the simulation to investigate the different scenarios. The paper presents also a case study using simulation to find the optimal matching parameters of a PV array connected to an inverter with the specifications: 6 kW rated output power, an input mpp voltage range of 333-500 V, 6.2 kW maximum input DC power, and an output AC voltage of 230 Vrms. Considering the local climate conditions in West Bank, the simulation resulted a peak power of 7 kW for the PV array, which is greater than the inverter output power by the factor 1.16. In addition, the obtained PV array consists of two parallel strings each includes 12 PV modules  connected in series  while each PV module is rated at 290 W. The output voltage of the PV arrayvaries between 359 V to 564 Vat minimum and maximum temperature of 10 ˚C to 70 ˚C respectively. This PV array-inverter combination resulted by simulation an annual yield of 1600 kWh/kWp and an energy of 11197 kWh which corresponds to an energy gain of 1591 kWh/year more than using a PV array with a peak power of 6 kW as the inverter rated power.
Pandemic dynamics prediction in Java using the Moving Average method and the Knowledge Growing System (KGS)
Authors: Sumari Arwin Datumaya Wahyudi , Putra Dimas Rossiawan Hendra , Musthofa Muhammad Bisri , Mari Ngat
Published: April 2021

This study aims to analyze the comparative performance of pandemic dynamics prediction methods on the island of Java, based on data from March to May 2020 covering the provinces of DKI Jakarta, West Java, Central Java, DI Yogyakarta, and East Java. The prediction uses Knowledge Growing System (KGS) and time series models, namely Single Moving Average (SMA) and Exponential Moving Average (EMA). Based on the Mean Absolute Percentage Error (MAPE) computational results, the EMA method produces a lower error rate than the SMA method with 47.94 % on average. The KGS prediction with a Degree of Certainty (DoC) produced a trend analysis that the pandemic dynamics in DKI Jakarta province will decrease gradually if the current policy is still implemented. Whereas in the other provinces, the KGS predicted the pandemic dynamics trends will still increase.
Guías de práctica clínica: oportunidad para visibilizar la importancia de la medicina del laboratorio
Authors: Santamaría González Maria , Ruiz Mínguez Maria Ángels , Arrebola Ramírez María Monsalud , Filella Pla Xavier , Torrejón Martínez María José , Morell García Daniel , López Miguel Ángel Castaño , Allué Palacín Juan Antonio , Albaladejo Otón María Dolores , Giménez Nuria
Published: April 2021

Objetivos

Las guías de práctica clínica (GPC) son recomendaciones desarrolladas de forma sistemática para ayudar a profesionales y pacientes en la toma de decisiones sobre la atención sanitaria más apropiada. Destacan entre sus características que deben basarse en la evidencia científica y estar elaboradas por equipos multidisciplinares. El objetivo de este estudio fue evaluar, en GPC, el contenido de la información sobre aspectos propios del laboratorio clínico y la participación de los profesionales del laboratorio en su elaboración.

Métodos

Se evaluaron 16 GPC recomendadas por la Sociedad Española de Medicina del Laboratorio (SEQC-ML) y/o seleccionadas en PubMed. En cada guía se evaluaron 80 aspectos relevantes relacionados con el laboratorio clínico y la autoría de profesionales del laboratorio.

Resultados

Las 16 guías evaluadas contenían de media un 49% (DE: 11%) de información sobre los aspectos específicos analizados del laboratorio clínico. Por orden de mayor a menor frecuencia contenían, una información media de: 69% de las variables postanalíticas analizadas (DE: 20%), 52% de las preanalíticas (DE: 11%) y 43% de las analíticas (DE: 18%). Finalmente, la mitad de las guías incluían algún profesional del laboratorio en la autoría.

Conclusiones

En las guías evaluadas fue frecuente observar carencias en la información sobre aspectos fundamentales del laboratorio clínico y únicamente la mitad de ellas incluía entre los autores a profesionales del laboratorio. Por ello, puede considerarse que todavía existe un margen de mejora amplio y sería recomendable una mayor incorporación de profesionales del laboratorio a los equipos multidisciplinares que las desarrollan.
Freiwilligeneinsatz im Stadtarchiv Stade
Authors: Deggim Christina
Published: April 2021

Nach reicher Erfahrung mit verschiedenen Formen des Freiwilligeneinsatzes im Stadtarchiv Stade hat sich der Einsatz Jugendlicher, die ein Freiwilliges Soziales Jahr in der Denkmalpflege absolvieren, als empfehlenswert auch für andere Kultureinrichtungen erwiesen. Dank klarer Strukturen der Internationalen Jugendgemeinschaftsdienste e.V., der Deutschen Stiftung Denkmalschutz und der Jugendbauhütte bereichern einsatzkräftige Jugendliche in Vollzeit das Archivteam als frischer und erfreulicher Zuwachs.
New York Public Library Volunteers
Authors: Muller Maura
Published: April 2021

From the early 1970’s to the present, this article explores the history of the New York Public Library volunteer program and explains how past volunteer initiatives have not only continued to support the Library’s mission but have created many staff led departments that still exist today. Volunteers help the library to support staff efforts to serve New Yorkers and the larger world.
Ehrenamt mit Tradition – Katholische Öffentliche Büchereien
Authors: Oberholthaus Thomas
Published: April 2021

Der Beitrag liefert einen Überblick über die größtenteils ehrenamtlich geleistete Arbeit der Katholischen Öffentlichen Büchereien in Deutschland mit ihren bundesweiten Strukturen. Weitere Inhalte sind die Zusammensetzung der Bibliotheksteams und deren Tätigkeitsfelder und die Möglichkeiten der Aus- und Fortbildung ehrenamtlicher Mitarbeiter*innen.
„Ist jetzt alles wieder normal?“ Ehrenamtliche Mitarbeit in der Stadtbibliothek Melle in Zeiten der Coronapandemie
Authors: Koop Ulrike
Published: April 2021

Der Artikel beschreibt den Umfang und die Organisation ehrenamtlicher Mitarbeit in einer Mittelstadtbibliothek sowie deren (bisherige) Veränderung durch die Coronapandemie.
Strategien Öffentlicher Bibliotheken zur Stärkung ihrer gesellschaftlichen Bedeutung
Authors: Heller Volker
Published: April 2021

Der Beitrag zu Strategien Öffentlicher Bibliotheken legt einen Schwerpunkt auf die Frage, welche Rolle Öffentliche Bibliotheken angesichts der Herausforderungen des 21. Jahrhunderts einnehmen können. Auf Basis der Analyse – mehr oder weniger – versteckter Werte der Institutionen und anhand von Beispielszenarien werden die Möglichkeiten und Aktionsfelder von Bibliotheken aufgezeigt und somit ihre Chancen für eine auch zukünftig hohe gesellschaftliche Relevanz betont.