bluuebunny/crossref_metadata_2025 huggingface dataset:
Signal Extraction for Classification of Noisy Images Compressed using Autoencoders
Authors: Sebai Dorsaf , Missaoui Nour , Zouaghi Asma
Published: August 2021

The world is experiencing an increasing boom in computer vision. This is more and more used in many domainssuch as robotics, medicine, industry, security systems, etc. In this context, Deep Neural Networks (DNNs) havegreat capabilities and are widely used. Convolutional Neural Networks (CNNs) present a particular class of DNNsthat is most commonly leveraged to analyzing visual imagery. However, CNN performances completely dependon two main issues. The first issue is related to the quality of the images generated by capture cameras. All imagescaptured by remote sensors and modern imaging systems are practically noisy, which can prevent the image frombeing correctly classified and identified by a CNN. The second issue is the throughput available for the transmissionof the large amount of data between capture sensors and units processing CNNs. A seamless transmission can beensured by compression techniques that help reducing the size of data, while affording the required quality forcomputer vision algorithms. Since lossy compression of noise-free and noisy images differ from each other, thiswork firstly raises the question of CNNs resilience to noisy images compression using the particular autoencoders.We secondly propose a method that aims to improve this resilience so that CNNs can achieve better classificationperformances. The compressed noisy images are passed, as a test set, along a model that is learnt from a noisedataset. The subtraction of the so captured noise from the noisy images is then performed to extract the usefulsignal to classify. This will be first work, where we learn the autoencoder from the noise sample, and not the noisysample, while denoising. Obtained results prove the efficiency of the proposed method.
Dynamic Sensor Matching for Parallel Point Cloud Data Acquisition
Authors: Müller Simone , Kranzlmüller Dieter
Published: August 2021

Based on depth perception of individual stereo cameras, spatial structures can be derived as point clouds. Thequality of such three-dimensional data is technically restricted by sensor limitations, latency of recording, andinsufficient object reconstructions caused by surface illustration. Additionally external physical effects likelighting conditions, material properties, and reflections can lead to deviations between real and virtual objectperception. Such physical influences can be seen in rendered point clouds as geometrical imaging errors onsurfaces and edges. We propose the simultaneous use of multiple and dynamically arranged cameras. Theincreased information density leads to more details in surrounding detection and object illustration. During apre-processing phase the collected data are merged and prepared. Subsequently, a logical analysis part examinesand allocates the captured images to three-dimensional space. For this purpose, it is necessary to create a newmetadata set consisting of image and localisation data. The post-processing reworks and matches the locallyassigned images. As a result, the dynamic moving images become comparable so that a more accurate point cloudcan be generated. For evaluation and better comparability we decided to use synthetically generated data sets. Ourapproach builds the foundation for dynamic and real-time based generation of digital twins with the aid of realsensor data.
Transfer Learning and Hyperparameter Optimization for Instance Segmentation with RGB-D Images in Reflective Elevator Environments
Authors: Reithmeier Lukas , Krauss Oliver , Zwettler Gerald Adam
Published: August 2021

Elevators, a vital means for urban transportation, are generally lacking proper emergency call systems besidesan emergency button. In the case of unconscious or otherwise incapacitated passengers this can lead to lethalsituations. A camera-based surveillance system with AI-based alerts utilizing an elevator state machine can helppassengers unable to initiate an emergency call. In this research work, the applicability of RGB-D images asinput for instance segmentation in the highly reflective environment of an elevator cabin is evaluated. For objectsegmentation, a Region-based Convolution Neural Network (R-CNN) deep learning model is adapted to use depthinput data besides RGB by applying transfer learning, hyperparameter optimization and re-training on a newlyprepared elevator image dataset. Evaluations prove that with the chosen strategy, the accuracy of R-CNN instancesegmentation is applicable on RGB-D data, thereby resolving lack of image quality in the noise affected andreflective elevator cabins. The mean average precision (mAP) of 0.753 is increased to 0.768 after the incorporationof additional depth data and with additional FuseNet-FPN backbone on RGB-D the mAP is further increased to0.794. With the proposed instance segmentation model, reliable elevator surveillance becomes feasible as firstprototypes and on-road tests proof.
Learning Cell Nuclei Segmentation Using Labels Generated With Classical Image Analysis Methods
Authors: Matuszewski Damian J. , Ranefall Peter
Published: August 2021

Creating manual annotations in a large number of images is a tedious bottleneck that limits deep learning use in many applications. Here, we present a study in which we used the output of a classical image analysis pipelineas labels when training a convolutional neural network(CNN). This may not only reduce the time experts spend annotating images but it may also lead to an improvement of results when compared to the output from the classical pipeline used in training. Inour application, i.e.,cell nuclei segmentation,we generated the annotations using CellProfiler(a tool for developing classical image analysis pipelines for biomedical applications)and trained on them a U-Net-based CNN model. The best model achieved a 0.96 dice-coefficient of the segmented Nuclei and a 0.84 object-wise Jaccard indexwhich was better than the classical method used for generating the annotations by 0.02and 0.34, respectively. Our experimental results show that in this application, not only such training is feasiblebut also thatthe deep learning segmentationsare a clear improvement compared to the output from the classical pipelineused for generating the annotations.
Deep Light Direction Reconstruction from single RGB images
Authors: Miller Markus , Nischwitz Alfred , Westermann Rüdiger
Published: August 2021

In augmented reality applications, consistent illumination between virtual and real objects is important for creatingan immersive user experience. Consistent illumination can be achieved by appropriate parameterisation of thevirtual illumination model, that is consistent with real-world lighting conditions. In this study, we developed amethod to reconstruct the general light direction from red-green-blue (RGB) images of real-world scenes using amodified VGG-16 neural network. We reconstructed the general light direction as azimuth and elevation angles. Toavoid inaccurate results caused by coordinate uncertainty occurring at steep elevation angles, we further introducedstereographically projected coordinates. Unlike recent deep-learning-based approaches for reconstructing the lightsource direction, our approach does not require depth information and thus does not rely on special red-green-blue-depth (RGB-D) images as input.
New Methods and Novel Framework for HypersurfaceCurvature Determination and Analysis
Authors: Hauenstein Jacob D. , Newman Timothy S.
Published: August 2021

New methods for hypersurface (that is, 3-dimensional manifold) curvature determination in volumetric data areintroduced. One method is convolution-based. Another method is spline-based. Method accuracy is also analyzed,with that analysis involving comparison of the methods with each other as well as against two existing convolution-based methods. The accuracy analysis utilizes a novel framework that enables curvature determination methodaccuracy analysis via dynamically generated synthetic test datasets formed from continuous trivariate functions.Such functions enable accuracy analysis versus ground truth. The framework is also described here.
Dynamic Governance Capabilities in Regional Budget Policy Formulation to Create Agile Bureaucracy During Covid-19
Authors: Hanida Rozidateno Putri , Irawan Bimbi , Rozi Fachrur
Published: August 2021

This pandemic period is the most difficult period for local governments, especially the pandemic has been going on for almost one fiscal year. The sudden arrival of the pandemic has forced the government to do budget refocusing. This study specifically wants to describe the dynamic governance capabilities of local governments in formulating regional budget policies during the pandemic or after the Covid-19 outbreak ends, so that in the future fiscal year, agile bureaucracy will be built in the regions. Another objective of this study is to describe the fundamental problems that occur in the budget formulation process and offer guidance related to how to solve problems in the budget preparation cycle for the 2021 fiscal year. The focus of the study is on the process of making budgeting policies in the regions, not on fiscal policies. This study uses a qualitative descriptive method, with data sources entirely obtained through secondary sources, so that this study can be called a literature research. The results of this study found that within the framework of thinking a head, local governments must be able to applicate using existing budgetary flexibility and exceptional spending procedures to fund first, so that the programs and activities to be carried out can be more flexible. Another thing that was found was the accelerating revision of regional finance regulation to secure a budget for the response through. During this pandemic, local governments continue to carry out planned programs and activities, so that regional budget absorption can be achieved and the economic life of the community can continue to develop.
The Impact of Remuneration Policy on Increasing Lecturer’s Motivation and Performance at Padjadjaran University
Authors: Rheny Rheny , Elita Rd. Funny Mustikasari , Perbawasari Susie
Published: August 2021

The remuneration policy in the higher education institution is a manifestation of the responsibility of the management leadership in providing awards in the form of additional income with the aim of improving the performance of lecturers. The reform of the lecturer salary payment system became effective in the 2015. This paper attempts to examine the impact of remuneration policies on the motivation and performance of lecturers. This study aims to analyze the positive impact of remuneration policies in an effort to increase the motivation and performance of Padjadjaran University lecturers. This research uses descriptive qualitative method. Research data collection is done through in-depth interview techniques and literature study. Informants in this research are Padjadjaran University management leaders and staffs and Padjadjaran University lecturers. This study uses a three-step data analysis technique, which consists of the process of reducing research data, displaying data and drawing conclusions. The conclusion from this research is that the remuneration policy has a significant impact on efforts to increase the motivation and performance of Padjadjaran University lecturers, with the fulfillment of both intrinsic and extrinsic factors which have a main role in efforts to increase the motivation of lecturers to always try to improve their performance.
Masculinidades, desigualdad social y embarazo en varones adolescentes mexicanos
Authors: Rojas Martínez Olga Lorena
Published: August 2021

En este artículo ponemos en cuestionamiento las afirmaciones que señalan al embarazo durante la adolescencia como precursor de la pobreza, del abandono escolar y de la incorporación laboral temprana entre la población adolescente involucrada. Para ello, desde una perspectiva que toma en cuenta el género, la desigualdad social y el curso de vida, revisamos los resultados de la investigación existente sobre el tema en México y analizamos el particular caso masculino. Argumentamos que los embarazos en la etapa adolescente son el resultado de una serie de desventajas sociales que los jóvenes varones acumulan en su precoz tránsito a la vida adulta.
encierro del/la estudiante
Authors: Velandia Sedano María Paula
Published: August 2021

La cuarentena obligatoria por el covid-19 transformó todos los ámbitos de la vida social, entre ellos la educación universitaria. En Colombia, el sector arrastra problemáticas estructurales tanto de enseñanza como de desigualdades materiales que se enfatizaron a raíz de la pandemia. El siguiente artículo es el resultado de una investigación de tipo cualitativa que pretende dar cuenta del impacto de la transición de una modalidad educativa presencial a una modalidad a distancia para, a partir de allí,  entender la acogida por parte de los/as estudiantes universitarios de las estrategias educativas en el ámbito digital de la educación superior.
uso de agrotóxicos em Jaguaribara/Ceará e suas consequências
Authors: Freitas Neta Maria Lusia Almeida de , Meireles Maria Rafaela Oliveira , Araújo Igor Gomes de , Oliveira Erivan de Souza , Morais Arlandia Cristina Lima Nobre
Published: August 2021

Os agrotóxicos são substâncias destinadas a matar, controlar ou combater, de algum modo as pragas, evitando que haja novos desmatamentos para o plantio. O objetivo deste trabalho foi avaliar o uso de praguicidas na zona rural de uma cidade do interior do Estado do Ceará. Trata-se de uma pesquisa observacional, transversal e de campo, com abordagens quantitativas. Foram entrevistados 50 agricultores, durante o período de janeiro a junho de 2020. Todos afirmaram que utilizam agrotóxicos e a grande maioria estão há mais de 30 anos na agricultura. Observou-se que os agricultores obtêm os produtos em estabelecimento especializado, entretanto, houve relatos de compras em comércios locais e até mesmo com vizinhos. O uso dos Equipamentos de Proteção Individual que é de suma importância para proteção da integridade física e a saúde do agricultor não foi priorizado e verificou-se relatos de sintomas, dentre os quais, dor de cabeça, tontura e vômito, que podem ter sido causados por consequências do mau uso dos agrotóxicos. Conclui-se que há muitos agricultores que fazem uso dos agrotóxicos nas plantações e realizam o manuseio de forma inadequada.
Palavras-chave: Agricultor. Agrotóxico. Intoxicação. Pragas. Praguicidas.
PROTEOMIC STUDIES IN THE SYMBIOTIC ASSOCIATIONS BETWEEN ARBUSCULAR MYCORRHIZAL FUNGI Funneliformis mosseae WITH MELON (Cucumis melo L.) UNDER SALT CONDITIONS
Authors: Lin Yong-Hong , Wang Chung-Li , Chiu Juei-Yu
Published: August 2021

Arbuscular mycorrhizal fungi (AMF) that can cause mutualism with higher plants. Some studies showed that the symbiosis of AMF will increase nutrients absorption, the capacity of anti-stress (e.g. drought, salt and disease) by melon (Cucumis melo L.). This study evaluated the roles of proteins on salt-tolerance mechanism after melon was symbiotic with AMF (Funneliformis mosseae). The melons were cultivated in the hydroponic solution containing 0 M, 0.042 M or 0.084 M NaCl for inoculated AMF and non-AMF inoculated seedlings. Root apice of AMF seedling after treating with different NaCl concentrations that were chosen for the estimation of proteins. The results showed that 12 proteins were significantly different after treating with different sodium chlorite (NaCl) concentrations, with proteins that four upregulated and eight downregulated. The tolerance of NaCl stress by root of melon that was inoculated by AMF were attributable to cellular activities involved in carbohydrate metabolism, energy metabolism, production of organic acid, relief of salt injury, which may be critical for promotion of nutrients absorption, anti-stress. This study can offer an important clue to advanced genomic exploration for the inoculation of AMF on different plants.
FOLIAGE APPLIED SILICON AMELIORATES DROUGHT STRESS THROUGH PHYSIO-MORPHOLOGICAL TRAITS, OSMOPROTECTANTS AND ANTIOXIDANT METABOLISM OF CAMELINA (Camelina sativa L.) GENOTYPES
Authors: Ahmad Zahoor , Warraich Ejaz Ahmad , Iqbal Muhammad Aamir , Barutçular Celaleddin , Alharby Hesham , Bamagoos Atif , Cig Fatih , Sabagh Ayman El
Published: August 2021

Silicon (Si) is one of the best plant defense elements against the biotic and abiotic stresses. Camelina plants accumulate Si which serves in protection against drought stress. The present study was conducted to investigate the impact of different doses of foliage applied Si (0, 3, 6 and 9 mM) under water stress (40% field capacity, FC) and non-stress conditions (100% FC) on camelina genotypes (Canadian and Australian). The imposed drought drastically decreased the growth parameters like root-shoot length and plant fresh and dry weight and also had negative impact on the chlorophyll content along with water relation attributes (water potential, osmotic potential and turgor pressure). In contrast, total free amino acids, total soluble proteins, proline and antioxidants such as ascorbic peroxidase (APX), superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) were enhanced especially in water stressed Canadian genotype, while osmoprotectants (flavonoids, anthocyanins and glycinebetaine) and phenolics contents were decreased. On the other hand, the foliar application of Si was instrumental in enhancing the growth of camelina by increasing the chlorophyll contents and water relation of stressed and non-stressed plants. Similarly, the biochemical, osmoprotectants and antioxidant metabolism was also improved in camelina stressed plants through the application of foliar Si. In conclusion, foliar application of 6 mM Si at vegetative growth stage played a vital role in alleviating the drastic impact of water stress on camelina growth by improving the water status, chlorophyll content, accumulation of phenolics and osmoprotectants and activating antioxidants. Therefore, the foliar application of Si could be developed as an important biologically viable strategy for boosting the tolerance in camelina plants to water stress conditions.
Uji Aktivitas Antidiabetes Senyawa Baru Daun Yakon (Smallanthus sonchifolius) sebagai Inhibitor Enzim DPP-4: Studi in Silico
Authors: Sinurat Mangatur Riverson , Rahmayanti Yuni , Rizarullah* Rizarullah
Published: August 2021

Diabetes melitus merupakan gangguang kesehatan global yang menjadi perhatian penting untuk menemukan pencegahan dan terapi baru. Diabetes melitus dapat diobati menggunakan obat golongan inkreitin untuk menghambat kerja enzim DPP-4. Daun yakon (Smallanthus sonchifolius) merupakan tanaman herbal yang sering digunakan untuk mengobati berbagai penyakit dan diketahui memiliki turunan senyawa sekunder baru. Tujuan penelitian ini adalah mengetahui aktivitas senyawa baru daun yakon menginhibisi enzim DPP-4 berdasarkan energi dan ikatan kimia secara in silico. Senyawa baru daun yakon adalah turunan asam octadecatrienoic dan Benzyl glikosida. Senyawa tersebut diambil dari pubchem dan digambarkan kembali menggunakan chemdraw, sedangkan enzim DPP-4 (reseptor) didapat dari bank protein dunia dengan kode PDB ID: 3F8S. Penelitian ini dilakukan dengan metode In Silico dan perangkat lunak AutoDock Vina digunakan untuk proses penambatan. Hasil optimasi gridbox dengan melakukan penambatan ulang ligan kontrol diperoleh hasil RMSD sebesar 1.628 Å. Hasil penambatan molekuler dapat disimpulkan bahwa senyawa baru daun yakon berpotensi menghambat aktivitas enzim DPP-4 sebagai antidiabetes berdasarkan nilai energi bebas ΔG dan ikatan kimia. Interaksi yang terbentuk antara ligan dan reseptor tepat pada sisi aktif enzim DPP-4 yaitu Glu205, Glu206, Asn710, Tyr662, Arg125, Ser630, Phe357, Tyr666, Tyr547 dan Ser209. Interaksi yang terjadi antara ligan dan reseptor didominasi oleh ikatan hidrogen. Senyawa 13(R)-hydroxyoctadeca-(9E,11E,15Z)-trienoic acid (ligan 1), benzyl +alcohol 7-O-α-L-arabinopyranosyl-(1"→2')-β-D-glucopyranoside (ligan 2), 13(R)-Hydroxy-octadeca-(9Z,11E,15Z)-trienoic acid (ligan 3) memiliki nilai ΔG sebesar -6.2 kkal/mol, -7.7 kkal/mol dan -5.6 kkal/mol. Namun, Benzyl alcohol 7-O-α-L-arabinopyranosyl (1"→2')-β-D-glucopyranoside (ligan 2) lebih berpotensi menghambat enzim DPP-4 karena nilai energi bebas Gibbs (ΔG) dan ikatan kimia yang terbentuk lebih negatif dan stabil dibandingkan ligan 1 dan 3
Pengembangan E-modul Praktikum Kimia Dasar Menggunakan Aplikasi Canva Design
Authors: Puspita* Kana , Nazar Muhammad , Hanum Latifah , Reza Muhammad
Published: August 2021

The implementation of learning has undergone significant changes due to the corona virus (Covid-19) spreading rapidly so that the teaching and learning process at various levels of education is generally carried out online. This urges lecturers to adapt teaching materials to online learning systems, especially subject topics that require laboratory activities. This study aims to develop an e-module for basic chemistry practice courses not only containing material and quizzes but also integrates practical video tutorials in each of its sub-topics. The research method used is research and development (RD) by applying the ADDIE model. Research respondents were 58 students of the Physics Education FKIP USK wenrolled in basic chemistry practice courses in their first-year study in the 2019-2020. The research data were collected using instruments in the form of students’ responses to the questionnaire on 1) the e-module, and 2) the application of e-modules in basic chemistry laboratory courses. The questionnaires were distributed via Google form to avoid physical contact and comply with health protocols. Prior to distribution, the questionnaire was tested for validity and reliability using the Cronbach's alpha test and analyzed with SPSS version 12 (IDMTM). The results of the validation show that the mean value of validation is 91.48% for the display, content, grammar, and evaluation system items. Cronbach's alpha test shows a mean alpha value of 0.903. The results of the response questionnaire showed that the average response score was greater than 8.00 for each questionnaire item, while the mean score for the application of the e-module laboratory courses was 8.88. This shows that the e-module for basic chemistry lab work is favorable and suitable for use as teaching material in the online learning process.
Online Professional Development for Improving Teacher's STEM PCK Competence, Can It Be An Alternative? (An Evaluation Using the CIPP Model)
Authors: Hasanah* Santi Setiani , Permanasari Anna , Riandi Riandi
Published: August 2021

During the pandemic, face-to-face training should not be carried out to reduce the spread of the covid outbreak. Therefore, online teacher professional development is an alternative method to replace the face-to-face training. In a program implementation, evaluation is an important component to determine whether the program has been implemented well or not. This evaluation is important to determine the effect of this online training on improving STEM PCK teachers. The evaluation used the CIPP model (Context, Input, Process, and Product), with the embedded mixed method research. This research was conducted on 60 science teachers of SMP alumni online training organized by PPPPTK IPA, from the “Sayangi Bumi” classroom. The results of the context evaluation show that 100% of respondents stated that the program is in accordance with the needs of teachers to strengthen their PCK., while the resources used in the program (Input evaluation) were good. The program implementation process ran 100% as planned and the product evaluation shows an increased teachers' understanding of the STEM approach. Teacher considered that the online professional development is very useful for teachers and can develop their skills in implementing STEM learning during distance learning. Online PD, apart from low-cost, can actually be an alternative way in improving teachers' STEM PCK competence and it also can reach all islands in Indonesia
Analisis Permasalahan Pendidik IPA Dalam Proses Penilaian Pembelajaran
Authors: Ulfah* Maria , Hairida Hairida , Arfiyanti Fitria , Permasari Ninda , Sabila Jessica Ayu
Published: August 2021

Penelitian ini bertujuan untuk menganalisis permasalahan yang dihadapi oleh pendidik khususnya dalam proses penilaian pembelajaran yang dilakukan. Metode yang digunakan adalah deskriptif. Instrumen yang digunakan untuk mengetahui permasalahan tersebut adalah kuesioner yang disebarkan melalui google forms kepada 26 guru IPA di Kubu Raya. Hasil yang diperoleh diketahui bahwa kendala yang dihadapi guru yakni  1) kesulitan dalam mengembangkan rubrik penilaian yang sesuai dengan model pembelajaran inovatif Abad 21 khususnya penilaian sikap dan keterampilan peserta didik; 2) kurangnya pemahaman dalam merancang penilaian non-tes, misalnya penilaian untuk mengukur berbagai keterampilan peserta didik; dan 3) kesulitan dalam mengimplementasikan penilaian proses dalam pembelajaran khususnya dalam mengelola waktu penilaiannya. Pada dasarnya guru sudah menerapkan pembelajaran yang inovatif dengan model-model yang sesuai tuntutan kurikulum 2013 meskipun dalam proses penilaiannya masih terdapat kesenjangan antara teori dan prakteknya di lapangan.
PENERAPAN METODE ROLE PLAYING PADA PEMBELAJARAN FISIKA UNTUK MENINGKATKAN HASIL BELAJAR SISWA
Authors: Paudi Zulfikar Is
Published: August 2021

Research  dealing  with  Role-Play  Learning  and  Conventional  Learning  methods,  have  been conducted.  The  main  reason  for  this  research  was  that  chemical  bond  was  one  of  the  difficult  but fundamental materials to be mastered by the students at grade X. The purpose of this research was to investigate the students’ achievement on the topic of Hukum Newton at SMA Negeri 1 Palu. One way of increasing their achievement was by using Role-Play method. In order to make their learning understandable, not boring, and easy to grasp, the researcher applied an interesting method called Role- Play.  The  population  of  this  research  was  the  tenth  grade  students  of  SMA  Negeri  1  Palu  in the  academic  year  2017/2018.  The  sample  was  32  students  of  grade  XA as  the  experimental  group (Role-Play) and 32 students of grade XC as the control group (Conventional Learning). The data were collected through the test on Hukum Newton. Based on the analysis, it is found that the average score of the experimental group was 20.65 with deviation standard of 2.413 and of the control group was 15.06 with deviation standard of 2.975. The hypothesis testing was that the t-counted value was 12.75 and the t-table value was 1.67 with the significant value (α) of 0.05. The results showed that there was a significant difference in the students’ achievement dealing with the topic of Hukum Newton through the application of Role-Play Learning method and Conventional Learning method at grade X at SMA Negeri 1 Palu in the Academic Year 2017/2018.
The Influence of Science, Environment, Technology, and Society In Creative Industries on Scientific Based Business Designing Skills of Pre-Service Science Teachers
Authors: Parmin Parmin , Savitri Erna Noor
Published: August 2021

Permasalahan pada penelitian ini adalah kurangnya ketrampilan kewirausahaan pada calon guru IPA. Penelitian ini dimaksudkan untuk mengukur pengaruh dari pendekatan pembelajaran SETS berdasarkan sudut pandang industri kreatif terhadap keterampilan kewirausahaan calon guru IPA. Sampel dalam penelitian ini adalah 82 mahasiswa Jurusan IPA Terpadu sebagai target penelitian yang mengikuti kursus Kewirausahaan. Kemampuan berwirausaha dibutuhkan para calon guru IPA agar nantinya setelah lulus, selain menjadi pendidik juga dapat mengembangkan usaha sendiri, baik itu berupa produk maupun jasa yang berbasis sains. Data primer diambil dengan teknik observasi dan diuji dengan menggunakan uji regresi yang menghasilkan skor yang signifikan yaitu 0,048 0,05. Hal ini berarti bahwa penerapan pendekatan SETS dalam pembelajaran memiliki pengaruh signifikan pada keterampilan kewirausahaan calon guru IPA. Pendekatan ini dapat menjadi salah satu solusi alternative untuk menghasilkan lulusan yang terampil secara ilmiah. Calon guru IPA yang memiliki pandangan kewirausahaan terintegrasi telah terbukti mampu merancang penerapan sains untuk menghasilkan barang-barang yang mengantisipasi efek negative pada lingkungan.
Experiment Optimization on the Reaction Rate Determination and Its Implementation in Chemistry Learning to Develop Science Process Skills
Authors: Farida Ida , Zahra Ridha Rizqia , Irwansyah Ferli Septi
Published: August 2021

Keterampilan proses dalam sains sangat diperlukan untuk membangun konsep dan pemahaman peserta didik. Salah satu upaya yang dapat dilakukan untuk mengembangkan keterampilan proses ialah dengan aktivitas belajar di laboratorium. Penelitian ini dilakukan bertujuan untuk mengembangkan keterampilan proses sains mahasiswa melalui penggunaan perangkat praktikum yang dapat mengukur laju reaksi secara kuantitatif. Eksperimen untuk mengetahui kondisi optimum dari praktikum penentuan laju reaksi pembentukan gas dilakukan untuk selanjutnya diturunkan menjadi lembar kerja. Lembar kerja yang telah divalidasi diimplementasikan kepada mahasiswa dengan menggunakan pre-experimental design dengan bentuk one shot case study. Subjek penelitian ialah 38 orang mahasiswa semester IV program studi Pendidikan Kimia UIN Sunan Gunung Djati Bandung yang mengambil mata kuliah kinetika dan kesetimbangan. Pengumpulan data dilakukan dengan menggunakan instrumen lembar kerja, lembar observasi aktivitas mahasiswa dan daftar ceklis kinerja praktikum. Hasil penelitian menunjukkan bahwa kondisi optimum praktikum penentuan laju reaksi pada variasi konsentrasi H2O2 sebesar 1,5 - 6% ialah penggunaan tabung reaksi sebagai reaktor, pipet ukur sebagai penampung gas, katalis KI dan MnO2 sebanyak 0,002 mol, serta volume gas O2 yang diamati sebanyak 10 mL. Hasil observasi terhadap aktivitas mahasiswa pada saat berlangsungnya kegiatan praktikum menunjukkan nilai rata-rata sebesar 98±4,737%, nilai ini menunjukkan bahwa mahasiswa terlibat aktif dalam kegiatan praktikum. Hasil analisis keterampilan proses sains mahasiswa pada praktikum penentuan laju reaksi pembentukan gas secara keseluruhan diinterpretasikan sangat baik dengan nilai rata-rata sebesar 88±1,785. Aspek mengumpulkan data memiliki nilai rata-rata tertinggi yang diinterpretasikan sangat baik dengan nilai sebesar 100. Aspek KPS menyimpulkan memiliki nilai rata-rata terendah yang diinterpretasikan baik dengan nilai sebesar 76.
Penerapan Model Discovery Learning untuk Meningkatkan Aktivitas dan Hasil Belajar Peserta Didik pada Materi Termokimia
Authors: Erlidawati Erlidawati , Habibati Habibati
Published: August 2021

Proses pembelajaran yang dilakukan pada mata pelajaran kimia di SMA masih sering menggunakan metode ceramah sehingga mengakibatkan peserta didik cenderung pasif di kelas. Salah satu solusi yang dapat dilakukan adalah dengan menerapkan model pembelajaran discovery learning. Penelitian ini bertujuan untuk meningkatkan aktivitas dan hasil belajar peserta didik Kelas XI melalui penerapan model discovery learning pada pokok bahasan termokimia. Penelitian ini merupakan penelitian tindakan kelas (PTK) yang dilaksanakan bersiklus, dengan tiap siklus terdiri dari perencanaan, pelaksanaan tindakan, observasi, dan refleksi. Subjek penelitian adalah peserta didik kelas XI IA 2 pada salah satu SMAN terakreditasi A di kota Banda Aceh yang berjumlah 34 orang. Teknik pengumpulan data dilakukan melalui wawancara, kajian dokumen, observasi, tes, dan jurnal belajar peserta didik. Data yang telah dikumpulkan dianalisis menggunakan deskriptif kualitatif. Hasil penelitian menunjukkan bahwa pada siklus I, persentase ketercapaian aktivitas belajar peserta didik sebesar 20,93%  yang kemudian meningkat menjadi 83,72% pada siklus II. Peningkatan hasil belajar dilihat dari aspek kognitif pada siklus I mencapai 36,36%  dan meningkat pada siklus II menjadi 63,64%, dari aspek afektif ketuntasan untuk siklus I sebesar 60,61%  dan meningkat pada siklus II menjadi 84,85%. Hasil belajar peserta didik pada aspek psikomotorik diperoleh capaian sebesar 30,30% pada siklus I dan 63,64% pada siklus II. Kesimpulan dari penelitian ini ialah penerapan model discovery learning dapat meningkatkan aktivitas dan hasil belajar peserta didik pada materi termokimia.
Characteristics of Chemistry Teaching Material Voltaic Cells on Students’ Creativity and Concept Mastery
Authors: Giyanto Giyanto , Rubini Bibin , Heliawati Leny
Published: August 2021

This study aims to find the characteristics of chemistry teaching material used by 16 teachers on the concept of voltaic cells in vocational high schools. The characteristics of teaching material accommodate 21st-century learning which includes the accuracy of the contents, the accuracy of the scope, the updating of the material, the comprehensibility of the text, the use of the language, and the use of the illustrations. The research identifies student competency profiles that are indispensable in 21st-century learning, namely creativity and concept mastery. The subject of the research is teaching material used by 16 chemistry teachers in 16 vocational high schools with 95 students studied. Data were collected using observation sheets, product creativity questionnaires, and tests of students' concept mastery. The data obtained were analyzed using a quantitative descriptive method. The results show that the teaching materials used in learning had not used an approach that encouraged creativity and learning outcomes for students. This resulted in low creative-thinking ability at a rate of 27.03% and in low mastery concept showed from the mean of learning outcomes at a score of 22.4 from a maximum score of 100. The study concludes that the characteristics of chemistry teaching material voltaic cells are not under the demands of the characteristics of 21st-century learning in the aspect of the content.
Relationship Attitude Natural Sciences To Responsibility In Junior High School
Authors: Tanti Tanti , Kurniawan Dwi Agus , Wirman Rahmi Putri , Fitriani Rini Siski , Pratiwi Nur Ika Sandi , Yuhanis Eva
Published: August 2021

Education has a very important role in educating the life of the nation. Education should not only give birth to someone who is an expert in a particular field, but also includes how someone is able to bring themselves in a community, nation and state environment in accordance with applicable norms and rules. Therefore, the character of responsibility and attitude towards subjects is very important for every individual. However, education that is happening at this time still does not provide space for students to behave honestly because the learning process tends to teach moral education and character limited to the knowledge written in the text. Therefore this study was designed to see how the relationship between attitude and student responsibility towards science subjects especially junior high students. This study is a mix of correlational type associative method research. The procedure of this study began by following the procedure in stages. In the preparation stage, it is done by formulating the problem and its variables. Then a literature review is conducted, looking for supporting theories and deepening the discussion of the problem under study in order to obtain an overview of the research to be carried out as well as the instruments needed. At the stage of questionnaire data questionnaire data collection was given to 136 students in Adhyaksa 1 Junior High School, Jambi City. From the data, data analysis is then carried out, namely data coding, proper data collection and analysis of the data. The data analysis technique uses correlational tests to find out whether there is a relationship between attitude and responsibility. The results of this study indicate a relationship between attitude and responsibility with a Pearson Correlation value of 0.000 0.05 so that it can be concluded that there is a relationship between attitude and responsibility in Adhyaksa 1 Junior High School, Jambi City
Pengembangan Model Pembelajaran Meaningful Investigation Laboratory (MIL) untuk Meningkatkan Keterampilan Representasi Verbal, Grafik, dan Matematis (R-VGM) pada Pembelajaran Fisika SMA Di Jawa Timur
Authors: Mahardika I Ketut , Astutik Sri , Zakaria Alfido Fauzy , Doyan Aris , Susilawati Susilawati
Published: August 2021

The need for learning innovation is indispensable as a result of the development of the 21st century. In the 21st century learning there is a shift in student-centered learning from teacher-centered learning including physics learning. Physics learning requires innovation by not only doing learning activities in the classroom. Learning that is always done in class will make students become bored. Innovation of learning activities can be done in the laboratory as an appropriate alternative compared to conventional learning in the classroom. On the other hand in learning physics the skills that students must possess are skills in verbal, graphic and mathematical representations (R-VGM). Meaningful Investigation Laboratory (MIL) Learning Model is a 21st century learning innovation. The 21st century learning model has precondition, investigation, report, and reinforcement syntactic. In the first syntax, precondition, the R-VGM skill is developed from the opening question of physical phenomena. In the second syntax, namely investigation, R-VGM skills can be developed from scientific inquiry. In the third syntactic report, R-VGM skills can be developed from reporting the results of scientific investigations in and group discussions. In the fourth syntax, namely reinforcement, R-VGM skills can be developed from the matter of reinforcement. And in the fifth syntactic, reflection, R-VGM skills can be developed from the connection and reinforcement of the learning completed.
Determinan Motivasi Berpartisipasi Mahasiswa Bidang Kesehatan dalam Penanggulangan Bencana
Authors: Adella* Shylvana , Agussabti Agussabti , Mudatsir Mudatsir
Published: August 2021

Indonesia has a high risk of disaster hazards. According to BNPB (National Disaster Management Agency), in the past 10 years the incidence of disasters in Indonesia's territory has increased. Tornadoes, floods, landslides and earthquakes have become the disasters with a high incidence rate. Health workers are an important part of disaster management, both during emergency response and during other disaster management phases. Lack of capacity of health workers can occur, the potential resource available to meet the shortage of health personnel at the time of a disaster is students in the health sector. This study aims to examine the influence of internal variables (respondens’ gender, study period, disaster experiences, disaster knowledge, students’ organization experiences, volunteering experiences, training/skills, religiosity) and external variables (family support, university support, trust in organizations disaster management, and the type of disaster faced) on the students’ participation motivation in the health sector involved in disaster management. The population of this study was the health department students (general medicine, nursing, psychology and dentistry) of Syiah Kuala University, Banda Aceh, Indonesia. A sample of 260 health students was taken using the quota sampling method. The data obtained through an online questionnaire distributed from April to June 2020. The gathered data was analyzed using the multiple regression statistical method. The results showed that the students’ participation motivation in disaster management activities is between low to moderate. There are only three factors that influence this students’ participation motivation, namely study period, training / skills and university support.
Kelayakan Booklet Inventarisasi Tumbuhan Berkhasiat Obat sebagai Media Pembelajaran
Authors: Panjaitan* Ruqiah Ganda Putri , Titin Titin , Wahyuni Eko Sri
Published: August 2021

Learning media is a tool in delivering learning material. The use of instructional media is proven effective in increasing understanding of a material. It's just that, the learning media used today tend to only contain material taken from textbooks, even though the media can also be developed based on the results of research or observations made in the field or in the laboratory. This study aims to determine the feasibility of the booklet developed by the inventory of medicinal plants in Pontianak City as a learning medium. The research stages include determining potentials and problems, gathering information, designing booklets, validating booklets, and revising booklets. The initial stage of making a booklet is to carry out an inventory of medicinal plant species and design the contents. The feasibility of the booklet is seen from the evaluation by the validator. The research instrument was a validation sheet. The aspects assessed include aspects of format, content, and language. From the six indicators on the format aspect, validity 1 is obtained, from two three indicators in the content aspect, validity is obtained 1, and from the two indicators on the language aspect, validity is obtained. 1. Overall, from the three aspects, the average validity is 1 with very high criteria. It can be concluded that this booklet is suitable for use as a learning medium
Perception, Attitude, and Student Awareness in Working on Online Tasks During the Covid-19 Pandemic
Authors: Maison Maison , Kurniawan* Dwi Agus , Anggraini Lika
Published: August 2021

Pandemic Covid-19 requires people to carry out their activities from home, or in other words, online. Likewise, all educational activities are carried out online to avoid and break the pandemic virus's transmission chain. This study examines the effect of students’ perceptions and attitudes on student awareness of doing online assignments due to the spread of the Covid-19 pandemic affecting learning in education. Learning that initially took place traditionally (face to face) shifted to virtual learning (online learning). The research method uses mixed methods with a sequential explanatory design with a total sample of 312 students of physics education at the University of Jambi. The instruments in this study used questionnaires and interviews. The data will be analyzed using SPSS 21. The research results show that students' perceptions, attitudes, and awareness in carrying out their assignments online are in a good category. This fact shows a significant effect of perceptions and attitudes on students' awareness of doing assignments online. It is evidenced by the effect of 70.5% of students 'perceptions and attitudes on students' awareness of doing assignments online. The remaining 29.5% is influenced by other variables not found in this study.
Development of Android-Based Millealab Virtual Reality Media in Natural Science Learning
Authors: Zulherman* Zulherman , Amirulloh Gufron , Purnomo Ariyadi , Aji Galih Baskoro , Supriansyah Supriansyah
Published: August 2021

Basically, media is something that cannot be separated from the learning component. The use of unattractive and varied media can make students bored and bored when the learning process takes place. This research was conducted with the aim of developing or producing a learning media product based on the use of virtual reality technology. The method used in this research is the research and development (RD) method. This media development focuses on learning Natural Sciences for grade V Elementary Schools. The initial stage of this research is by validating media experts and material experts. Then test the feasibility of media products to the teacher before testing the product to students. The results of the validation by media experts and material experts obtained criteria strongly agree with the results of validation by media experts by 85% and material experts by 92%. Then the media feasibility test conducted by the teacher obtained 89% results with the criteria strongly agree. The feasibility of media products for use by students was carried out through product trials at SDS Muhammadiyah 9 Jakarta with a total of 21 students. The results obtained show a percentage of 86% with very agree criteria.
The Use of Smartphone Applications in Laboratory Activities in Developing Scientific Communication Skills of Students
Authors: Malik* Adam , Ubaidillah Mujib
Published: August 2021

Smartphone applications have been widely used in everyday life, not least in the world of education. The use of smartphone applications in improving the quality of learning has become a trend and is widely used by educators. The use of smartphones in learning is dominated by the implementation of regular learning and is still lacking in the laboratory's implementation. This study aimed to determine the use of smartphone applications in laboratory activities in developing students' scientific communication skills. The research method used was the quantitative descriptive method. The research sample was a fifth-semester physics education study program student who contracted the school physics laboratory course. The smartphone application used in laboratory activities in this study consists of a physics toolbox and tracker. Physics toolbox is an application whose working principle is based on sensors. Students use the tracker to make graphs from videos that illustrate activities laboratory. The research instrument used was a performance assessment in the form of a scientific communication skill observation sheet. The data analysis technique was done by calculating the percentage of achievement of students' scientific communication skills. The results showed that smartphone applications could develop students' scientific communication skills in a good category. Thus, smartphone applications in laboratory activities can develop one of the skills needed by students in facing the era of industrial revolution 4.0.
Arguing Skillfully with Argument-Driven Inquiry Science Textbooks
Authors: Fadly* Wirawan , Miaturrohmah Miaturrohmah
Published: August 2021

Argumentation skills have an important role in 21st-century learning because it can facilitate constructing the relationship between theory and understanding the concept of science. The development of textbooks based on argumentation skills can bridge science theories and ideas, especially with the Covid-19 pandemic, limiting social contact between communities and students so that they have to work and study from home. Textbooks can be a solution to assist students to learn independently. This study aims to determine the characteristics, practicality, and effectiveness of the developed argument-driven inquiry textbook (ADI). The research was conducted at MTsN 6 Ponorogo using the Research and Development (RD) method. Testing the practicality and effectiveness of textbooks was carried out using a randomized control group pretest-posttest design. The number of research samples consisted of 124 students taken through random sampling techniques divided into experimental and control classes. Data were obtained from questionnaires, and argumentation skills tests were analyzed using quantitative descriptive and qualitative descriptive to determine practicality, and inferential statistics (t-test) to evaluate the effectiveness of the textbooks being developed. The results showed that ADI-based textbooks: 1) have the characteristics of being able to encourage students to argue critically and be able to construct students' logic and creativity in relating environmental problems, scientific concepts, and scientific paradigms through multi-disciplinary integration; 2) has a practicality level of 84%, which means that the contents of the book are very good at motivating students to learn, relevant to the material, and easy to understand from the material and language aspects; 3) effective in improving students' argumentative skills is better than classes that are not based on ADI (α = 0.05) with an increase in the moderate category (N-Gain = 47.17%).