bluuebunny/crossref_metadata_2025 huggingface dataset:
EFECTOS DE LOS PARÁMETROS DEL AGUA EN MONOGENEOS DE MYLEUS SCHOMBURGKII (PISCES: SERRASALMIDAE) CULTIVADO EN LA AMAZONÍA PERUANAEFECTOS DE LOS PARÁMETROS DEL AGUA EN MONOGENEOS DE MYLEUS SCHOMBURGKII (PISCES: SERRASALMIDAE) CULTIVADO EN LA AMAZONÍA PERUAN
Authors: Flores Gonzales Anai P.P. , Pizango Gloria , Fernández-Méndez Christian , Mathews Patrick , Tavares-Dias Marcos
Published: August 2021

Myleus schomburgkii Jandine & Schomburgk, 1841 es un pez con distribución en regiones de América del Sur. Presenta gran importancia económica por las exportaciones generadas como pez ornamental; sin embargo, poco se conoce sobre la presencia de monogeneos en este pez. El objetivo del presente estudio fue investigar los parásitos monogeneos en M. schomburgkii cultivados y la correlación con los parámetros físicos y químicos del agua. Se examinó un total de 30 peces cultivados en estanque de tierra donde se midieron los principales parámetros físicos y químicos del agua, como temperatura, oxígeno y pH. La prevalencia de monogeneos fue 100%, con la presencia de Notozothecium bethae Kritsky, Boeguer y Jégu, 1996 y Anacanthorus sp. un total de 7312 parásitos fueron colectados. Todavía, N. bethae fue el parásito más prevalente y abundante. Se observó correlación positiva entre la temperatura, oxígeno disuelto del agua y la abundancia de monogeneos, no encontrándose correlación significativa entre la abundancia de monogeneos con niveles de pH del agua. Por tanto, la ocurrencia y abundancia de monogeneos fue influenciada por los parámetros físicos y químicos del agua. Este es el primer estudio sobre parásitos en M. schomburgkii con relación a los parámetros físicos y químicos del agua en la Amazonía peruana.
Methodological foundations of strategic personnel management
Authors: Kyriy Serhiy , Kalienik Kseniia , Ananin Oleg , Kukin Igor , Zrybnieva Iryna , Romanova Vera
Published: August 2021

The paper discusses the content, principles, scientific schools and modern trends in people management in an organization. At methodological tools for evaluating the strategic potential of the organization's people; the method for evaluating the strategic potential of the company's personnel is proposed based on an analysis of the use of the working hours fund. The results of the activities of staff in management positions, colleagues, subordinates and the employee's opinion are determining axes in the perception of the studied object, that is, people respond proactively to the management style according to the structure and planning of organizational praxis.
Pengaruh beban lampu terhadap tegangan, arus, dan rpm pada turbin angin cross flow 8 sudu
Authors: Syamsi Febrian Nur , Irfa`i Mochamad Arif , Basuki Basuki
Published: August 2021

Alternative energy is a source of energy found in nature that can be directly used freely. In addition, the availability of alternative energy is infinite and can be managed sustainably. This wind energy source can be used as an electricity generator by building several wind turbine units. The problem in this research is how the influence of the load on the performance of the 8 blades cross flow wind turbine, while the purpose in this study is to find out how the load on the performance of the blades of 8 blades. The type of research I use is quantitative research. For the author's method using an experimental method, the free load variable lights 0, 3, 6 and 9 watts and the dependent variables are current, voltage and RPM. The results showed that the 8 blades cross flow wind turbine had the best performance at 0 watt load which produced 0 ampere current, 13.8 watt voltage and 354.92 RPM. while the lowest performance on a 9 watt lamp load which produces a current of 0.2088 amperes, a voltage of 9.08 volts and Rpm 301.08, the current has increased, this is because the current is directly proportional to the load power, while the voltage and RPM have decreased because generator voltage and RPM are inversely proportional to the load power used.
Analisis jumlah volume bahan bakar yang dihasilkan pada alat pirolisis sampah plastik tipe LDPE
Authors: Kurniawan Ari , Basuki Basuki , Irfa’i Mochamad Arif
Published: August 2021

Penelitian pada artikel ini merupakan pembahasan analisis jumlah volume bahan bakar yang dihasilkan pada alat pirolisis sampah plastik tipe LDPE. Tujuan penelitian ini adalah memanfaatkan limbah sampah plastik tipe LDPE menjadi bahan bakar alternatif dengan menggunakan suhu 3000C pada alat pirolisis. Pengujian alat pirolisis didapatkan data dari masing-masing pengujian yaitu pada suhu 3000C menghasilkan minyak dengan rata-rata 400 ml.
Pengaruh cyclone dan peletakannya terhadap karakteristik gasifikasi dengan menggunakan filter zeolit alam
Authors: Ikhwahyudin Afrizal , Ridhuan Kemas , Nugroho Eko
Published: August 2021

The gas product from the gasification process contains tar content that is not thermally appropriately degraded before it leaves the reactor; for efficiency, the gasification process must go through filtering or separation using filters and cyclones. This process is essential because of the increase in the gas producer's energy density through the syn-gas filtering and purification process or syn-gas combustion.  This study aimed to determine the effect of the cyclone and its placement on the combustion characteristics of gasification using natural zeolite filters, the length of time for the product gas, and how much cyclones and filters can separate tar in updraft type gasification process. In this study, the gasification process uses an updraft type reactor, biomass fuel using rubberwood, filters using natural zeolite media, and adding a coolant (condenser). Testing by varying the addition and placement of the cyclone position. The test results show that the use of cyclone variations does not affect the Temperatur in the reactor. A cyclone's effect using a natural zeolite filter on the characteristics of the combustion product (flame) is very large; namely, the color of the fire is bluish and clean with little smoke and the size of the flame coming out of the burner. The effect of a series of cyclones and natural zeolite filters on the flame duration of Syn-Gas on the burner is ± 44 minutes. Without using the cyclone series, the flame time in the burner only reaches ± 28 minutes. The tar that can be separated by the burner and filter without using a cyclone is 381 grams, and the tar that is separated by the cyclone in the cyclone series after the condenser can accommodate as much as 450 grams.
Performance test of vacuum frying machine technology in mango skin chips frying process
Authors: Mufarida Nely Ana , Abidin Asroful
Published: August 2021

Nowadays, the business of processing fruit flesh into various snacks has been done a lot, but still, a few are starting to look at the use of fruit skins. If usually people are only interested in the use of fruit flesh, creative people will start to be interested in utilizing the fruit skin waste that people usually throw away. One of them is the use of mango peels into fruit chips. By frying and varying the taste of the mango peel, it can create a snack that is different from the others. So that it attracts consumers to consume this snack. The processing of fruit into chips needs technological support so that the quality of the chips produced is acceptable to consumers. One of the ways to produce healthy food without changing its original form is to use vacuum frying technology. Compared to conventional frying, the vacuum system produces a much better product in terms of appearance, color, aroma, and taste. Based on the above, this study discusses the performance test of vacuum frying technology in the utilization of abundant mango peel waste into products that have selling value. height and longer shelf life by making the mango peel into chips so that the economic value of the fruit can be increased. In this study, researchers used direct observation for data collection techniques from the results of research, namely a technique or data collection method by making direct observations on the Vacuum Frying Machine which was tested by recording the results of the observations. The research was conducted in 2 stages, namely preliminary research and main research. Preliminary research was conducted to determine the optimal temperature and frying time range for the mango peel chips used in the frying process. The observations made in the preliminary study were subjective observations of the color and crunch of the mango skin chips. The best results from the preliminary research are used in the main study. Determination of the best frying temperature and time from the results of the organoleptic test by weighing test. In the organoleptic test, the panelists were asked for their opinion regarding the level of their preference for mango skin chip products. The organoleptic test in this study used 15 panelists with the preference test covering 4 quality parameters, namely aroma, taste, crispness, and color.Keywords: Performance Test, Vacuum Frying Machine, Mango Skin Chips
Laptop cooling numerical simulation using Computational Fluid Dynamics
Authors: Syamsuri Syamsuri , Fairuz ZA , Alfonsus KDT
Published: August 2021

Laptop’s cooling solution is very important. In some cases, due to poor cooling an over heat on the mother board, main chip, and other components occurs, so that the laptop is quickly broken. Therefore it is necessary to know the temperature distribution so that over heat can be overcome. One of the methods to determine the temperature distribution in this final project is a flow simulation, using CFD (Computational Fluid Dynamics), 3D method with the variation if different air flow velocity, i.e. 5 m/s, 10 m/s, and 15 m/s. The higher the air flow rate, the higher the cooling occurs. From the temperature contours it is shown that the hot temperature is built up on the back of the heat sink. The results of the validation of this study and previous studies obtained an error that occurred was around 4%.Keywords: CFD, variation of air flow velocity, laptop.
Effect of cutting fluid and spindle speed on surface hardness in turning AISI 4140 steel
Authors: Iswanto Iswanto , Tjahjanti Prantasi , Widodo Edi , Chilmi Muchammad
Published: August 2021

This paper will discuss how the influence of different cutting fluid on surface hardness, how different spindle speed affect surface hardness, and are there interactions between cutting fluid and spindle speed on surface hardness of workpieces produced by conventional lathe. In this study, the variables that are varied are the cutting fluid and spindle speed. The cutting fluid used is: dromus, used oil SAE 40 and used cooking oil. While the spindle speed used is 370 rpm, 665 rpm, and 1040 rpm. Then the hardness of the workpiece surface is tested from the lathe process by varying the cutting fluid and the spindle speed. From the results of the hardness test on the surface of the workpiece, it can be concluded that: the greatest value of the surface hardness of the workpiece is obtained in the lathe process using dromus cutting fluid and the spindle speed used is 665 rpm. Whereas the smallest workpiece surface hardness value is obtained when using dromus cutting fluid using spindle speed of 1040 rpm. Cutting Fluid and Spindle Speed has a significant effect on surface hardness in the turning process of AISI 4140 steel
Analisa proses produksi part number D574-50081-201 menggunakan mesin milling CNC di PT DI
Authors: Budiyanto Eko , Yuono Lukito Dwi , Rohman Fatku
Published: August 2021

The world of manufacturing technology is currently developing rapidly. Computerization carried out on manufacturing equipment makes it very easy for an industry, especially industries with a large production scale or mass production with a high number of orders in a short time. Manufacturing technology for machine tools usually uses a CNC (Computer Numeric Control) machine. Where the operation of this machine uses a program controlled by a computer and the programmer. This machine can produce products with high accuracy, even for very complicated manufacturing work. Product errors due to operator negligence can be reduced, as contact between the operator and the machine is minimal. However, if there is an error in the material or improper feed, the operator tends not to know because everything has been executed with the program that has been made. Observations were made at the 3 axis prismatic machine section, PT. Dirgantara Indonesia (DI). The milling machine used was the QUASER MV 185 type machine. Part material used in this study was Aluminum alloy 7010. The results of observations and calculations obtained that the average machining efficiency was 13%. Keywords: CNC, production process, efficiency.
Pengaruh jumlah nozzle terhadap kinerja turbin pelton sebagai pembangkit listrik di Desa Sumber Agung Kecamatan Suoh Kabupaten Lampung Barat
Authors: Irawan Dwi , Nugroho Eko , Widiyanto Eko
Published: August 2021

A micro hydro power plant, or commonly known as a turbine is a power plant that utilizes the potential energy of water to be converted into mechanical energy which is then converted into electrical energy using a generator. The Pelton turbine is an extension of the impulse turbine with a split some blades dividing the jet into two equal beaks which are reversed sideways at the turbine wheel. This study aims to determine the effect of the number of nozzles to output power, efficiency, and electric power produced. In this study, a Pelton type water turbine was applied to a water source flowing from the mountains with a head of 26 m and 0.003167 m3/s water discharge. This study used 3 variations of the number of nozzles (single, double, and triple nozzle) with 9 mm outer diameter of nozzle and 35 mm nozzle length. The results of the research conducted, the turbine power is 419.53 watts, the turbine efficiency is 52%, and the generator power is 360 Watts for triple nozzle variation. The turbine power obtained is 388.83 Watts, the turbine efficiency is 48%, and the generator power is 234 Watts for double nozzle variation. And the power obtained is 367.47 Watts, the turbine efficiency is 45%, and the generator power is 175 Watts for single nozzle variations.
Point-to-Block Matching in Depth Estimation
Authors: Mieloch David , Klóska Dominika , Woźniak Magdalena
Published: August 2021

In this paper, the novel correspondence search method called point-to-block matching was proposed. Recently, in many proposed multimedia systems, depth estimation is performed on compressed input views. To address this problem and increase the quality of such depth maps, in the proposal, a point in a view is not compared simply with a point in another view, but to the most similar point in a small block surrounding it. The introduction of this method in the depth estimation process is beneficial to the quality of depth maps, as it decreases the influence of small shifts in images, caused e.g., by encoding-related errors introduced to input views. The method was implemented in one of the state-of-the-art depth estimation methods and tested in series of experiments. Based on the comparison of synthesized virtual views with the input views, the proposal increases the quality of estimated depth maps in most of the tested configurations.
Relevant Independent Variables on MOBA Video Games to Train Machine Learning Algorithms
Authors: López Guzmán Juan Guillermo , Bustacara-Medina Cesar Julio
Published: August 2021

Popularity of MultiplayerOnlineBattle Arena (MOBA)video gameshas grown considerably, its popularity as well as the complexity of their playability, have attracted the attention in recent years of researchers from various areas of knowledge and in particular how they have resorted to different machine learning techniques. The papers reviewed mainly look for patterns in multidimensional data sets. Furthermore, these previous researches do not present a way to select the independent variables(predictors)to train the models. For this reason, this paper proposes a listof variables based on the techniques used and the objectives of the research. It allows to provide a set of variables to find patterns applied in MOBA videogames.In order to get the mentioned list,the consulted workswere groupedbythe used machine learning techniques, ranging from rule-based systems to complex neural network architectures. Also, a grouping technique is applied based on the objective of each research proposed.
Exploration of U-Net in Automated Solar Coronal Loop Segmentation
Authors: Moradi Shadi , Lee Jong Kwan , Tian Qing
Published: August 2021

This paper presents a deep convolutional neural network (CNN) based method that automatically segments arc-like structures of coronal loops from the intensity images of Sun’s corona. The method explores multiple U-Netarchitecture variants which enable segmentation of coronal loop structures of active regions from NASA’s SolarDynamic Observatory (SDO) imagery. The effectiveness of the method is evaluated through experiments on bothsynthetic and real images, and the results show that the method segments the coronal loop structures accurately.
Service-based Processing of Gigapixel Images
Authors: Fregien Florian , Pasewaldt Sebastian , Döllner Jürgen , Trapp Matthias
Published: August 2021

With the ongoing improvement of digital cameras and smartphones, more and more people can acquire high-resolution digital images. Due to their size and high performance requirements, such Gigapixel Images (GPIs) areoften challenging to process and explore compared to conventional low resolution images. To address this problem,this paper presents a service-based approach for GPI processing in a device-independent way using cloud-basedprocessing. For it, the concept, design, and implementation of GPI processing functionality into service-basedarchitectures is presented and evaluated with respect to advantages, limitations, and runtime performance.
Contactless Heart Rate Estimation From Facial Video Using Skin Detection and Multi-resolution Analysis
Authors: Ben Salah Khawla , Othmani Mohamed , Kherallah Monji
Published: August 2021

This paper introduces a remote Photoplethysmography (rPPG), which is used to estimate human heart rate withoutany physical contact, has been extensively applied in multiple fields like medical diagnosis, analysis of humanemotions, rehabilitation training programs, biometric, and fitness assessments. The rPPG signals are usually ex-tracted from facial videos. However, it is still a challenging task due to several contributing factors, e.g., variationin skin tone, lighting condition, and subject’s motion. Accordingly, in this work, a novel approach based on deeplearning skin detection method and the discrete wavelet transform (DWT) is employed to precisely estimate heartrate from facial videos. In the proposed method, by implementing the DWT, the signal is decomposed into approx-imations and details parts thereby it helps in analyzing it at different frequency bands with different resolutions.The results derived from the experiments show that our proposed method outperforms the state-of-the-art methodson the UBFC-RPPG database.
View Synthesis: LiDAR Camera versus Depth Estimation
Authors: Xie Yupeng , Fachada Sarah , Bonatto Daniele , Teratani Mehrdad , Lafruit Gauthier
Published: August 2021

Depth-Image-Based Rendering (DIBR) can synthesize a virtual view image from a set of multiview images andcorresponding depth maps. However, this requires an accurate depth map estimation that incurs a high compu-tational cost over several minutes per frame in DERS (MPEG-I’s Depth Estimation Reference Software) even byusing a high-class computer. LiDAR cameras can thus be an alternative solution to DERS in real-time DIBR ap-plications. We compare the quality of a low-cost LiDAR camera, the Intel Realsense LiDAR L515 calibrated andconfigured adequately, with DERS using MPEG-I’s Reference View Synthesizer (RVS). In IV-PSNR, the LiDARcamera reaches 32.2dB view synthesis quality with a 15cm camera baseline and 40.3dB with a 2cm baseline.Though DERS outperforms the LiDAR camera with 4.2dB, the latter provides a better quality-performance trade-off. However, visual inspection demonstrates that LiDAR’s virtual views have even slightly higher quality thanwith DERS in most tested low-texture scene areas, except for object borders. Overall, we highly recommend usingLiDAR cameras over advanced depth estimation methods (like DERS) in real-time DIBR applications. Neverthe-less, this requires delicate calibration with multiple tools further exposed in the paper.
Quality of Life and Treatment
Satisfaction of Hospitalized and Day Hospital Psychiatric Patients
Authors: Vranješ Janja , Petrić Daniela , Grahovac Juretić Tanja , Tovilović Zdravko
Published: August 2021

Introduction. Day hospitals are becoming an increasingly common method of treatment for people with mental disorders in many Croatian psychiatric hospitals, but research examining their effectiveness is still rare.
Aim. The aim of this study was to compare treatment satisfaction and quality of life between patients enrolled in a day hospital program and patients hospitalized on a psychiatric ward.
Methods. The study design was cross-sectional with two outcome measures: treatment satisfaction and quality of life. The study sample consisted of 120 adult patients of the Clinic for Psychiatry of the University Hospital Centre Rijeka. The first group consisted of 60 patients included in the day hospital psychosocial program, while the second group consisted of 60 patients hospitalized on the inpatient ward.
Results. Day hospital patients reported a significantly higher level of overall treatment satisfaction compared to hospitalized patients (mean rank: 55 vs. 17, p=0.000) and were significantly more satisfied in four out of seven different treatment domains: the explanations about treatment (mean rank: 68 vs. 53, p=0.013), carefulness and precision of medical examination (mean rank: 72 vs. 49, p=0.000), choices about treatment (mean rank: 67 vs. 57, p=0.027) and feeling of respect (mean rank: 68 vs. 53, p=0.010). Day hospital patients also reported a significant psychopaly higher level of overall subjective quality of life (mean: 4.26 vs. 3.71, p=0.005), being more satisfied with life in general (mean rank: 68 vs. 53, p=0,018), financial situation (mean rank: 67 vs. 54, p=0.046), accommodation (mean rank: 67 vs. 54, p=0.041), personal safety (mean rank: 68 vs. 53, p=0.014), people they live with or living alone (mean rank: 71 vs. 50, p=0.001), relationship with their family (mean rank: 49 vs. 53, p=0.000) and their mental health (mean rank: 69 vs. 52, p=0.008).
Conclusion. Patients treated in the day hospital differed in the observed variables from those hospitalized on the ward, reporting higher levels of treatment satisfaction and higher subjective quality of life. Future studies should focus on different segments of day hospital programs and a broader set of outcomes.
Perception Of Stress and
Illness Among Nurses in Psychiatry
Authors: Bočkor Tomislav , Kurtović Josipa , Pavelić Tremac Ana
Published: August 2021

Homeostasis is important for maintaining
balance and normal functioning of the organism. Allostatic mechanisms further
help to establish this balance. If the body is under stress for a longer
period, a complex condition in the body called allostatic load occurs. If such
a load lasts longer, the risk of developing diseases increases significantly.
This study was conducted anonymously with the aim of determining the health
status of male and female nurses in the Neuropsychiatric hospital “Dr. Ivan Barbot” in Popovača and their exposure to everyday stressors in the workplace.
The main purpose was to examine the relationship between stress and the health
status of nurses in relation to gender, age, and seniority. A total of 142
nurses participated. The Health Questionnaire and Workplace Stress
Questionnaire were used. The results showed that the most common diseases nurses
suffer from are cardiovascular diseases, thyroid diseases, gastrointestinal
diseases, and allergies. Women showed higher sensitivity to stress than men.
The most common stressors faced by nurses in the workplace are inadequate
personal income, inadequate workspace and material resources for work, lack of
staff, daily contingencies, 24-hour responsibility, and administrative work.
This study found an association between age and, consequently, work experience
with the likelihood of illness, although both the healthy and the sick perceive
equal levels of stress. One disadvantage of this study is that it covers a
large area and deals with general issues, but it can certainly be a starting
point for further research. Many questions remain open, which means there is a
need for further research and study of the link between stress and illness.
The Role of Perforin
Authors: Švegar Davorka
Published: August 2021

Some literature reviews
have been carried out about the role of perforin in medicine. The first step involved
a systematic search to identify relevant studies published between 2001 and
2019 in the following electronic databases - EBSCO host, Scopus, Science
Direct, Web of Science, and Elsevier. By analyzing the available literature, it
can be concluded that perforin plays an important role in cytoxical activity of
natural killer cells (NK) and CD8+ T cell. NK and CD8+use the same mechanism
for destroying target cells. This article cites the disease hemophagocytic lymphohistiocytosis
(HLH) which is characterized by heavy abnormalities in the immune system. The
point is that this disease is caused by perforin gene mutation. The key is the
application of properly sensitized dendritic cells (DCs) because they are
effective in immunotherapy against cancer. It may be effective in γ-irradiated colon cancer cell lines HT-29. Growth
hormone inhibiting hormone (GIH) induces maturation and activation of DCs. In that
way, GIH-Dcs shows increased cytotoxic activity and higher perforin and granzyme expression. So, this means that theoretical research has
shown that efficient activity against cancer is induced when DCs are sensitized
with γ-irradiated cancer cells.
In that way, through a direct increase of cytotoxicity and indirect T cell
activation,there can beanti-tumor activity. It is suggested to continue
scientific research about the role of perforin in the future.
A Comparison Study of Data Mining Algorithms for blood Cancer Prediction
Authors: Bahjat Noor , Jamak Snwr
Published: August 2021

Cancer is a common disease that threats the life of one of every three people. This dangerous disease urgently requires early detection and diagnosis. The recent progress in data mining methods, such as classification, has proven the need for machine learning algorithms to apply to large datasets. This paper mainly aims to utilise data mining techniques to classify cancer data sets into blood cancer and non-blood cancer based on pre-defined information and post-defined information obtained after blood tests and CT scan tests. This research conducted using the WEKA data mining tool with 10-fold cross-validation to evaluate and compare different classification algorithms, extract meaningful information from the dataset and accurately identify the most suitable and predictive model. This paper depicted that the most suitable classifier with the best ability to predict the cancerous dataset is Multilayer perceptron with an accuracy of 99.3967%.
Gamze Kaya GERMINATION, STOMATAL AND PHYSIOLOGICAL RESPONSE OF ROCKET (Eruca sativa L.) TO SALINITY
Authors: Kaya Gamze
Published: August 2021

The response of rocket (Eruca sativa L.) to salinity stress was tested for several germination and physiological parameters during seedling development. Two rocket cultivars (Ilıca and Istanbul) and various salinity stresses of 0, 5, 10, 15 and 20 dS m–1 created by NaCl were used in the study. Germination percentage (GP), mean germination time (MGT), germination index (GI), germination stress tolerance index (GSTI), stomata morphology, chlorophyll content (SPAD value), leaf dry matter, relative water content (RWC), cellular injury (CI) and cell membrane stability (CMS) were evaluated. Results showed that high salinity stresses led to a decrease in GP, GI and GSTI index, while MGT increased. Salinity reduced stoma length and pore length. Under saline conditions, leaf dry matter, chlorophyll content and CMS increased, while RWC decreased. Also, CI was enhanced by salinities over 10 dS m–1. It was concluded that lower CMS, CI and RWC, and greater dry matter and chlorophyll were considered as salinity tolerance at the seedling stage of the rocket, and Istanbul was more tolerant to salinity than Ilıca.
ANALISIS PEMAHAMAN KONSEP GELOMBANG MEKANIK MELALUI APLIKASI ONLINE QUIZIZZ
Authors: Yana Annisa Ulfa , Antasari Lila , Kurniawan Bakhrul Rizky
Published: August 2021

Gelombang mekanik merupakan salah satu materi penting yang dipelajari dalam fisika.Materi gelombang mekanikdipelajari dalam beberapa submateri sehingga menyebabkan pengukuran tingkat pemahaman konsep mahasiswa menjadi sulit. Aplikasi online Quizizz merupakan salah satu alternatif media yang dapat digunakan untuk mengetahui pemahaman konsep mahasiswa secara interaktif dan fleksibel.Penelitian ini dilakukan pada 29 mahasiswa jurusan fisika dengan menggunakan 15 soal konseptual yang diklasifikasikan ke dalam tiga materi yaitu, gelombang bunyi, gelombang mekanik pada air, dan gelombang mekanik pada tali. Pengambilan data pemahaman kosep gelombang mekanik dilakukan melalui kuis yang disajikan pada Quizizz. Hasil analisis menunjukkan bahwa secara keseluruhan pemahaman konsep mahasiswa fisika terhadap gelombang mekanik adalah 51%. Hal ini menunjukkan bahwa tingkat pemahaman konsep yang dimiliki mahasiswa fisika berada pada kategori sedang.
PELATIHAN TAKSONOMI NUMERIK SEBAGAI STRATEGI UNTUK MENINGKATKAN TECHNOLOGICAL PEDAGOGICAL CONTENT KNOWLEDGE GURU BIOLOGI
Authors: Putri Amalianneisha Rafadewi Andhanatami , Hidayat Topik , Purwianingsih Widi
Published: August 2021

TPACK is the ability to integrate knowledges of content, pedagogical, and technology that must be possessed by teachers in facing the era of education in the 21st century. To improve TPACK can be done with training strategies, in this study numerical taxonomy training is a training program for biology teachers about TPACK and CoRes, and content which is related to concepts, technology, and learning strategies for classification of living things that discuss about numerical taxonomy, as a strategy to improve TPACK biology teachers in classifying living things learning. The method used was pre-experimental one group pre-post test design. The data about teachers’ TPACK was gained from CoReS and lesson plans prepared by teachers, and teachers’ prespective on TPACK was gained from responses toward questionnaires. The result showed after training,  analysis of CoRes reveals that 80% of Biology teachers’ is on the Growing TPACK, and 20% is on the Pre TPACK category. The average percentage of N-gain TPACK ability of teachers is 60% in the medium category, the result of significant test (t test) indicates t score t table (16.88 2.13), it showed a significant difference in the TPACK ability of biology teachers before and after numerical taxonomy training. Teachers’ prespective on TPACK in classification of living things learning have a positive changes, teachers starts to be able to determine the technology, strategy, and understanding the content of living things learning especially the numerical taxonomy. It can be concluded that numerical taxonomy training can improve TPACK’s ability.
PENGEMBANGAN GAME EDUKASI SCIENCE ADVENTURE UNTUK MENINGKATKAN KETERAMPILANPEMECAHAN MASALAH SISWA
Authors: Winarni Dyah Setyanigrum , Naimah Janatun , Widiyawati Yeni
Published: August 2021

Games edukasi menciptakan suasana menyenangkan dalam pembelajaran IPA. Penelitian ini bertujuan untuk mengembangkan game Science Adventure untuk meningkatkan keterampilan pemecahan masalah. Penelitian ini menggunakan metode Research and Development (RD) yang mengadaptasi model 4D-Thiagarajan yakni Define, Design, and Develop. Subjek penelitian ini yaitu siswa kelas VII D SMP N 13 Semarang (N=32). Teknik analisis data yang digunakan yaitu kuantitatif-deskriptif, berupa rerata skor validasi. Hasil penelitian menunjukan tingkat kelayakan game science adventure yang telah dikembangkan sebesar 92,5% pada aspek materi; dan 95,25%  pada aspek media sedangkan berdasarkan tes keterampilan memecahkan masalah, didapatkan ketuntasan klasikal 100% (sangat baik) dengan rata-rata nilai siswa 82,8. Hal ini menunjukkan bahwa media game science adventure layak dan dapat meningkatkan keterampilan pemecahan masalah.
PENGEMBANGAN SOAL KIMIA HIGHER ORDER THINKING SKILLS BERBASIS KOMPUTER DENGAN WONDERSHARE QUIZ CREATOR MATERI HIDROLISIS GARAM DAN LARUTAN PENYANGGA
Authors: Khaldun Ibnu , Hanum Latifah , Utami Shinta Dita
Published: August 2021

Penelitian ini bertujuan  untuk menganalisis kualitas serta kelayakan soal-soal kimia kategori HOTS yang dikembangkan pada  materi hidrolisis garam dan larutan penyangga dengan menggunakan Wondershare Quiz Creator. Penelitian ini merupakan penelitian pengembangan dengan pendekatan kualitatif dan model 3-D yang telah dimodifikasi dari model 4-D. Subjek penelitian adalah 32 orang mahasiswa Jurusan Pendidikan Kimia FKIP Universitas Syiah Kuala angkatan 2016. Instrumen yang digunakan  yaitu  lembar validasi penilaian kualitas soal, kelayakam media, angket tanggapan mahasiswa, dan kualitas butir soal. Hasil uji kelayakan soal oleh tim ahli materi dan hasil validasi telah memiliki kriteria sangat layak dengan skor  masing-masing sebesar  85,0% dan  99,7%.  Berdasarkan hasil analisis butir soal diperoleh  soal valid sebesar 80% dengan  reliabilitas  sebesar 0,763. Tingkat kesulitan soal dengan kategori mudah, sedang, dan sulit berturut-turut 15,0%, 75,0%, dan 10,0%.  Daya beda soal dengan kategori baik sebesar 55,0% dan kategori cukup  sebanyak 45,0%. Pengecoh  soal   yang berfungsi dengan baik sebesar 62,5%. Soal HOTS ini  mendapat tanggapan  positif   sebesar  93,3%.  Dapat disimpulkan bahwa soal kimia materi hidrolisis dan larutan penyangga kategori HOTS berbasis komputer memiliki kualitas soal yang baik dan sangat layak digunakan sebagai tes hasil belajar.
FILM DOKUMENTER PEMANFAATAN TUMBUHAN BERKHASIAT OBAT SEBAGAI MEDIA PEMBELAJARAN MATERI SISTEM PENCERNAAN
Authors: Putri Ruqiah Ganda , Titin Titin , Santoso Rahmat
Published: August 2021

Penelitian ini bertujuan untuk melihat kelayakan media pembelajaran berupa film dokumenter materi sistem pencernaan manusia di kelas VIII SMP. Media film dokumenter diuji kelayakannya oleh lima orang validator dan instrumen penelitian yang digunakan adalah lembar validasi. Terdapat empat aspek yang dinilai oleh validator, yaitu aspek format, isi, bahasa, dan kepraktisan. Hasil penelitian menunjukkan nilai untuk aspek format 3,36, aspek isi 3,84, aspek bahasa 3,4, dan aspek kepraktisan 3,8, dengan nilai rata-rata total validasi 3,6. Jadi, dapat disimpulkan bahwa media film dokumenter layak digunakan sebagai media pembelajaran sistem pencernaan manusia.
Pengembangan Modul Fisika Berbasis Integrasi Islam-Sains pada Materi Gerak Lurus untuk Meningkatkan Hasil Belajar Peserta Didik
Authors: Husna Asmaul , Hasan M. , Mustafa Mustafa , Syukri Muhammad , Yusrizal Yusrizal
Published: August 2021

Sistem Pendidikan nasional yang diselenggarakan di Aceh sesuai dengan Qanun berdasarkan pada nilai-nilai budaya islami membuat sekolah melaksanakan pengembangan potensi siswa dengan mengedepankan nilai-nilai islami. Hal tersebut dapat terwujud salah satunya dengan menggunakan bahan ajar atau modul yang terintegrasi. Berdasarkan dari hasil observasi pada salah satu sekolah di SMA di Banda Aceh menunjukkan bahwa bahan ajar yang digunakan hanya buku paket fisika yang belum terintegrasi. Tujuan dari penelitian ini adalah mengembangkan bahan ajar modul berbasis integrasi islam dan sains yang valid, praktis dan efektif pada materi gerak lurus. Jenis penelitian yang digunakan adalah research and development dengan menggunakan model Sugiyono. Instrumen penelitian menggunakan lembar validasi, observasi keterlaksanaan pembelajaran, angket respon peserta didik serta soal pre-tes dan pos-tes. Uji coba di lakukan pada kelas X MIPA 3 dengan jumlah 29 orang peserta didik. Hasil penelitian diperoleh kevalidan dengan kategori sangat valid, untuk kepraktisan berdasarkan hasil observasi didapat dengan kualifikasi sangat baik, sedangkan untuk keefektifan dilihat dari uji N-gain pre-tes dan pos-tes mengalami peningkatan dengan rata-rata 0,67 pada kategori sedang dan mendapat respon yang positif dari hasil analisis angket peserta didik. Hasil tersebut menunjukkan bahwa modul materi gerak lurus yang dikembangkan telah memenuhi kriteria valid, praktis dan efektif.
Penerapan Model Problem Based Learning pada Materi Alat-Alat Optik untuk Meningkatkan Kepercayaan Diri dan Kemampuan Menyelesaikan Masalah Kontekstual
Authors: Mulyani Sri , Gani Abdul , Syukri Muhammad , Tarmizi Tarmizi , Elisa Elisa , Nurhasanah Nurhasanah , Fajriani Fajriani
Published: August 2021

Peserta didik sulit memahami materi alat-alat optik dipengaruhi oleh rendahnya pemahaman dalam penguasaan materi. Hal ini dikarenkaan gaya mengajar guru masih dominan menggunkan model teacher center sehingga peserta didik tidak terlibat aktif pada proses pembelajaran dan menimbulkan kurangnya rasa kepercayaan diri pada peserta didik dalam menyelesaikan masalah konstektual fisika dengan menggunakan model problem based learning pada materi alat-alat optik. Metode penelitian yang digunakan adalah pre-experimental dengan desain “control group pretest-posttest design”. Sampel dalam penelitian ini adalah kelas XI IPA 3 sebagai kelas eksperimen sebanyak 30 peserta didik. Pengumpulan data dilakukan dengan pretest- posttest untuk mengukur kemampuan menyelesaikan masalah konstektual dan angket untuk menilai kepercayaan diri peserta didik. Penelitian ini menggunakan one group pretest-posttest design. Hasil analisis nilai rata-rata pretest sebesar 50,07 dan posttest sebesar 75,77 dengan perolehan N-gain 0,51 yang tergolong kategori sedang. Uji signifikan dilakukan dengan menggunakan uji-t setelah data berdistribusi normal. Hasil uji t menunjukkan thitung ttabel (12,055 2,045) sehingga terdapat perbedaan nyata. Hasil analisis kepercayaan diri diperoleh peningkatan setelah menerapkan model problem based learning didapatkan bahwa indikator keyakinan akan kemampuan diri 81,77%, optimis 83,67%, obyektif 88,75%, bertangggung jawab 86,94%, dan rasional 88,85%. Hasil penelitian menunjukkan bahwa model problem based learning dapat meningkatkan kemampuan menyelesaikan masalah konstektual fisika dan kepercayaan diri peserta didik pada materi alat-alat optik.
Identifikasi Tingkat Pemahaman Konsep Siswa Menggunakan Tes Diagnostik Three-Tier Multiple Choice pada Materi Hidrokarbon
Authors: Vellayati Susti , Nurmaliah Cut , Sulastri Sulastri , Yusrizal Yusrizal , Saidi Nurdin
Published: August 2021

Pemahaman konsep adalah kemampuan seseorang dalam mengartikan, menjelaskan atau mengaplikasikan suatu hal berdasarkan pengetahuan yang telah dipelajari. Tes diagnostik adalah suatu alat yang dapat digunakan untuk mengetahui tingkat pemahaman konsep siswa. Tes yang digunakan pada penelitian ini adalah tes diagnostik three-tier multiple choice dan dikombinasikan dengan media CBT MOODLE. Pada penelitian ini telah dilakukan kajian untuk mengidentifikasi tingkat pemahaman konsep siswa pada materi hidrokarbon dengan menggunakan tes diagnostik three-tier multiple choice berbasis CBT MOODLE. Metode penelitian yang digunakan adalah metode deskriptif. Subjek penelitian terdiri dari 89 orang siswa kelas XI-MIPA SMAN 8 Banda Aceh. Pengumpulan data yang digunakan berupa 16 butir soal tes diagnostik three-tier multiple choice. Analisis data untuk mengetahui tingkat pemahaman konsep siswa menggunakan metode certainty of respons index (CRI).  Berdasarkan hasil penelitian diperoleh bahwa rata-rata siswa yang paham konsep terhadap materi hidrokarbon adalah 30,1% dan dikategorikan bahwa tingkat pemahaman konsep siswa gagal. Rata-rata siswa yang tidak paham konsep terhadap materi hidrokarbon sebesar 47,3%, siswa yang miskonsepsi sebesar 16% dan error sebesar 6,6%. Secara keseluruhan dapat dinyatakan bahwa siswa belum memahami materi hidrokarbon dengan benar sebesar 69,9%.
Pengembangan Aplikasi Pembelajaran Interaktif Berbasis Android untuk Membantu Mahasiswa dalam Mempelajari Materi Larutan Elektrolit dan Nonelektrolit
Authors: Nazar Muhammad , Zulfadli Zulfadli , Oktarina Anggi , Puspita Kana
Published: August 2021

Di era digital dimana pertumbuhan teknologi melaju pesat dan dinamis, peserta didik harus didorong untuk mengikuti tren perilaku belajar yang memanfaatkan perangkat teknologi yang lebih dikenal dengan technological pedagogical content knowledge (TPACK). Oleh karena itu, pendidik harus mengambil peran penting dalam menyampaikan pengetahuan melalui pemanfaatan teknologi seluler seperti smartphone. Penelitian ini bertujuan untuk mengembangkan aplikasi pembelajaran interaktif yang memadukan game, kuis, dan video pada materi larutan elektrolit dan nonelektrolit, dan menguji usabilitas penggunaan aplikasi di universitas. Penggunaan aplikasi yang diberi nama E-lite ini tidak hanya mengakomodasi pengetahuan dari konsep yang ditargetkan tetapi juga mencakup permainan, multimedia dan uji kemampuan diri yang memungkinkan peserta didik untuk meningkatkan motivasi belajar mereka dalam mempelajari kimia. Pengukuran kemudahan penggunaan aplikasi dan umpan balik pengguna terhadap aplikasi ini melibatkan 50 orang mahasiswa Program Studi Pendidikan Kimia Universitas Syiah Kuala sebagai responden yang dipilih berdasarkan teknik proportional stratified random sampling. Kepada mahasiswa diberikan angket system usability scale (SUS) yang berisi 10 pertanyaan. Hasil pengujian menunjukkan bahwa skor usabilitas mencapai 85,95%, sedangkan validitas konten memiliki nilai 96,3% dan validitas aplikasi adalah sebesar  83%. Oleh karena itu, aplikasi ini secara umum dinyatakan valid dan dapat digunakan sebagai media pembelajaran untuk konsep larutan elektrolit dan nonelektrolit pada tingkat perguruan tinggi atau universitas.
Penerapan Model Discovery Learning Berbasis STEM pada Materi Sistem Gerak Untuk Meningkatkan Keterampilan Berpikir Kritis
Authors: Fadlina Fadlina , Artika* Wiwit , Khairil Khairil , Nurmaliah Cut , Abdullah Abdullah
Published: August 2021

Implementation of learning in class 11th MAN 1 and MAN 2 Banda Aceh City Students only get information without going through discussion activities, students who are not brave enough to express ideas or ideas, so that students are not trained in using their critical thinking skills. This study aims to determine the improvement of students' critical thinking skills through the application of the STEM-based discovery learning model to the motion system concept. The research approach used is quantitative with the type of pre-experimental research. The research design used is the one-group pretest-postest design. The population was all of 11th grade students, amounting to 292 people. The sampling technique used was a total sampling. The sample in this study consisted of 292 students. The instruments in this research were pretest and posttest multiple choice questions with reasoned. Data analysis consisted of normality test, paired sample t-test at a significant level of 0.05 and n-gain. The results of the paired sample t-test obtained tcount 48 and value (ρ.001), so it was concluded that there were differences in critical thinking skills and learning outcomes of students before and after learning with the application of the STEM-based discovery learning model to the motion system concept. The results of the n-gain test using the Meltzer formula showed that the gain in critical thinking skills was 0.85, so there was an increase in critical thinking skills with a high category.
Development of Comic Based Learning on Reaction Rate for Learning to be More Interesting and Improving Student’s Learning Outcomes
Authors: Sari* Sri Adelila , Harahap Nur Fatni Amirah
Published: August 2021

Teachers often use projector media in classroom learning. Rarely do they want to develop and vary learning media with the aim of making the learning process more interesting. Finally, the lack of student interest in reading textbooks results in low student learning outcomes, which are not the focus of teacher attention. This study was aimed to develop comic in the material on reaction rates. The method used was R D with ADDIE, namely analysis, design, development, implementation, and evaluation. The analysis stage was carried out by analyzing the needs in the form of student characteristics and identifying learning media. The media design stage included plot design, character design, and scenario creation. The design results were then developed at the development stage, then the comic was given to two validators to test their feasibility. The implementation phase was carried out at the XI IPA class XI IPA Senior High School LAB IKIP Al Washliyah Medan. Furthermore, student learning outcomes were measured at the evaluation stage using tests. The results of this study found that comic could be developed by meeting the eligibility criteria of 93.29 percent with very good criteria. Students were very enthusiastic about chemistry comic. Student learning outcomes obtained an average of 81.07, which means that the minimum completeness criteria value was 75. This study concludes that this chemistry comic learning media was very suitable for use in chemistry learning, especially in the material reaction rate and student learning outcomes were achieved good criteria.
Generative Learning Strategy Assisted by Flash Animation to Remediate Students’ Misconceptions on Newton’s Law of Gravity
Authors: Pardiyanto Eko , Winarti* Winarti
Published: August 2021

The generative learning strategy assisted by flash animation had not been applied to overcome learners’ misconceptions. This research aims to find out the effectiveness of generative learning strategy assisted by flash animation to remediate learners’ misconceptions toward the Newton’s law about gravity and to determine the way to decrease learners’ misconceptions after the intervention. This research applied the quasi-experimental method with pretest-posttest control group design. This research was conducted at Public Senior High School 5 Yogyakarta. The population consisted all ten graders, 216 participants. The sample was taken with purposive sampling from X-science-mathematics-2 learners as the control group and X-science-mathematics-4 learners as the experimental group. There were seventy-two learners. The applied instruments were two-tier multiple choice items and the learner-interview sheet, as the non-test instrument. From the research, the obtained N-Gain was 0.476. The hypothesis test showed that the t-test obtained the asymp.sig 2(tailed)of 0.000 and the probability score was 0.05. The asymp.sig (2-tailed) was lesser than the probability score and its effectiveness was 0.988. The decreased misconception after the intervention found in experimental group was 20% while the control group was 2.30%. It meant generative learning strategy assisted with flash animation was effective to remediate the tenth-graders’ misconceptions of Public Senior High School 5 Yogyakarta on Newton’s law about gravity