bluuebunny/crossref_metadata_2025 huggingface dataset:
Animal detections increase by using a wide-angle camera trap model but not by periodically repositioning camera traps within study sites
Authors: Seidlitz Anke , Bryant Kate A. , Armstrong Nicola J. , Wayne Adrian F.
Published: February 2021

When using camera traps for wildlife studies, determining suitable camera models and deployment methods is essential for achieving study objectives. We aimed to determine if camera trap performance can be increased by (1) using cameras with wider detection angles, and (2) by periodically repositioning cameras within sites. We compared three camera trap groups: stationary Reconyx PC900/HC600 (40° detection angle), and paired, periodically-repositioned Reconyx PC900/HC600 and Swift 3C wide-angle camera traps (110° detection angle). Cameras operated simultaneously at 17 sites over 9 weeks within the Upper Warren region, Western Australia. Swift cameras had significantly higher detection rates, leading to better performance, especially for species <1 kg and >10 kg bodyweight. Reconyx cameras missed 54% of known events, with most being animals that moved within the cameras’ detection zones. Stationary and periodically-repositioned Reconyx camera traps performed similarly, although there were notable differences for some species. The better performance of Swift 3C wide-angle camera traps makes them more useful for community-level and species-level studies. The increased sensitivity of the Swift’s passive infrared sensor along with the wider detection zone played an important role in its success. When choosing camera trap models, detection angle and sensor sensitivity should be considered to produce reliable study results. Periodically repositioning cameras within sites is a technique that warrants further investigation as it may reduce camera placement bias, animal avoidance of camera traps, and increase spatial/habitat information when a limited number of cameras are deployed.
Molecular bases of an alternative dual-enzyme system for light color acclimation of marineSynechococcuscyanobacteria
Authors: Grébert Théophile , Nguyen Adam A. , Pokhrel Suman , Joseph Kes Lynn , Ratin Morgane , Dufour Louison , Chen Bo , Haney Allissa M. , Karty Jonathan A. , Trinidad Jonathan C. , Garczarek Laurence , Schluchter Wendy M. , Kehoe David M. , Partensky Frédéric
Published: February 2021

Significance

Of all cyanobacteria on Earth, marineSynechococcusare those displaying the greatest pigment diversity. The most sophisticated pigment type is cells able to reversibly modify their color by a phenomenon called type IV chromatic acclimation or CA4. Two genetically distinct CA4 types (CA4-A and CA4-B) have evolved in different lineages. Together, they represent almost half of allSynechococcuscells in oceanic areas and are equally abundant but occupy complementary ecological niches. While the molecular mechanism of CA4-A has recently started to be deciphered, the CA4-B mechanism was so far uncharacterized. Here, by unveiling this mechanism and demonstrating its singularity relative to CA4-A, we provide highlights on the evolutionary history ofSynechococcusacclimation to light color in the oceans.
On the horizon entropy of a causal set
Authors: Machet Ludovico , Wang Jinzhao
Published: February 2021

We discuss how to define a kinematical horizon entropy on a causal set. We extend a recent definition of horizon molecules to a setting with a null hypersurface crossing the horizon. We argue that, as opposed to the spacelike case, this extension fails to yield an entropy local to the hypersurface-horizon intersection in the continuum limit when the causal set approximates a curved spacetime. We then investigate the entropy defined via the spacetime mutual information between two regions of a causal diamond truncated by a causal horizon, and find it does limit to the area of the intersection.
Microstructure of bismuth centers in silicon before and after irradiation with 15 MeV protons
Authors: Arutyunov Nikolay , Krause-Rehberg Reinhard , Elsayed Mohamed , Emtsev Vadim , Abrosimov Nikolay , Oganesyan Gagik , Kozlovski Vitalii
Published: February 2021

A decrease of two-gamma annihilation rate of a positron in a strong spin–orbit field of the annihilation site of bismuth impurity center 209Bi (J = 9/2) in silicon with natural isotope composition was revealed (J is the nuclear spin). This decrease was observed along with increasing occupancy of Bi donor states (binding energy E{Bi} ≈ 69 meV). Atoms of 29Si (J = 1/2) isotope are involved in spin interactions of positron with Bi impurity centers. The growth of occupancy of Bi donor states inhibits two-gamma annihilation rate. The estimated cross-section of positron trapping by the Bi impurity center is σ
+ ≈ (1.23–1.5) × 10−13 cm2. Together with this surprisingly large value, the integral rate of two-gamma annihilation in a hypothetical polyelectron system of the Bi impurity center is by a factor of just Δ ∼ 2.18 higher compared to the magnitude ≈2.09 × 109 s−1 known for elemental isolated polyelectron, (e−e+e−). Possible formation of the positron-containing exciton-like states, (e+)D
0
X (D = Bi, P) is also discussed. Irradiation of material with 15 MeV protons results in decreasing the factor Δ by ∼11% due to forming the radiation complex in which Bi atom is in an open volume ambient it. Such complex is suggested to have D
3d symmetry and be the deep donor. Low-temperature measurements of both the positron annihilation rate and Hall effect have been applied for studying the isochronal annealing of these point radiation defects which were found to be thermally stable up to ∼370 °C; they can be annealed at ∼430 °C – 470 °C. According to available data of ab initio cluster calculations, the complex of Bi atom with a simulated vacancy has D
3d symmetry with the energy gain ∼0.92 eV, thus indicating qualitative agreement between experimental and theoretical data.
Laser-driven acceleration of ion beams for ion fast ignition: the effect of the laser wavelength on the ion beam properties
Authors: Badziak Jan , Domański Jarosław
Published: February 2021

The properties of a carbon ion beam accelerated by an infrared (1.05 μm), visible (0.53 μm) or ultraviolet (0.248 μm) 1 ps 150 kJ laser under conditions relevant for ion fast ignition (IFI) are numerically investigated using a particle-in-cell 2D3V code, and the feasibility of achieving the ion beam parameters required for IFI is discussed. It was found that parameters of the ion beam determining the DT fuel ignition relatively weakly depend on the laser wavelength, and that each of the considered laser drivers enables the production of an ion beam with parameters required for IFI, but only at short distances from the irradiated carbon target, no longer than ∼100 μm. At such distances, a picosecond ion beam with ‘useful’ energy >10 kJ, peak fluence >1 GJ cm−2, peak intensity >1021 W cm−2 and the mean ion energy ∼500–600 MeV is produced regardless of the laser driver wavelength. The main factors limiting the possibility of achieving the required parameters of the ion beam at larger distances are the beam angular divergence and the ion velocity dispersion. The ion acceleration is accompanied by the emission of powerful (tens of PW, tens of kJ) picosecond pulses of short-wavelength synchrotron radiation whose power and energy increases as the laser wavelength decreases. The emission of this radiation is a source of ion energy losses and significantly reduces the values of energy, fluence and intensity of the ion beam. In addition, the emitted multi-PW radiation may pose a threat to the fusion infrastructure.
Phase transition of Laplacian roughening model on a triangular lattice using Wang–Landau Monte Carlo simulation and Fisher zeros
Authors: Kim Jin Min
Published: February 2021

Phase transition of the discrete Laplacian roughening model was investigated on a triangular lattice of various sizes by using the Wang–Landau (WL) Monte Carlo simulation and finite-size scaling analysis of partition-function zeros. The density of states was calculated using the WL method, and the internal energy and specific heat were calculated as a function of temperature. A single transition was observed at T
c = 1.855(5) with a new universality class of the correlation exponent ν = 0.70(1) and the specific heat exponent α = 0.60(4). The results were confirmed by the finite size scaling analysis of the first zeros for the partition function. The critical exponents satisfy the scaling relation α = 2 − dν very well.
The Relationship of Self-Efficacy with Adherence in Restricting Fluid Intake in Middle Adult Hemodialysis Patients
Authors: Gartika N , Mustopa A , Hidayat Y
Published: February 2021

This research was based on the prevalence of visual impairment in Indonesia which are diabetic retinopathy 42.6% and glaucoma 0.46 %. This condition causes low vision and even blindness so that impact to achieve daily activities. The purpose of this study is to identify the relationship between low vision with ADL (Activity Daily Living) in diabetic retinopathy and glaucoma patients in the National Eye Center of Cicendo Eye Hospital in Bandung. This quantitative study uses a cross-sectional design, involving 58 diabetic retinopathy patients and 28 glaucoma patients selected by probability random sampling techniques. ADL was measured using the Barthel Index and Lawton IADL. The data were analyzed using descriptive analysis, Spearman Rank, and Pearson correlation. Results showed the characteristics of respondents mostly severe low vision, aged 41-60 years, gender is female, are housewives, history of diabetic >10 years, and history of illness for 1-5 years. The ADL and IADL figures are primarily independent. Result of the Pearson correlation test and the Spearman Rank hypothesis show that there is no relationship between a low vision and ADL in diabetic retinopathy and glaucoma patients, neither a low vision with the patient, however, there is a significant relationship between low vision and IADL in diabetic retinopathy patient (p= 0,000). As a suggestion, in addition to ADL, it is important to use IADL as an assessment in patients with low vision.
The variation of ethanol concentration and kombucha characterization on several incubation periods
Authors: Ihsani Nisa , Hernahadini Nelis , Fauzi Muhammad
Published: February 2021

Kombucha is a type of fermented tea that recently popular in Indonesia. It gives so many health benefits for human body, as prevention and therapeutic cure for the disease. Some of the benefits are for improving digestion and reducing the risk of cancer and cardiovascular disease. It also has significant potential as an antioxidant agent. The heterofermentative fermentation process in kombucha causes this product to produce organic acid and ethanol as an alcohol compound. However, ethanol concentration in fermented food has become a major concern in Indonesian Halal products studies. One cause of ethanol concentration differences is incubation times. In this study, we measured alcohol concentration at several incubation times: 5, 6, 7 and 8 days incubation. We also assessed characteristics of kombucha by testing its antioxidant activity, lactic acid content, pH, and enumeration of lactic acid bacteria. The result shows that the incubation time, from 5 to 8 days, did not produce alcohol more than 0,5% as restricted by MUI Fatwa 2018. It has been shown that the various time of incubations did not give a significant difference in the quality of the antioxidant activity and lactic acid levels, and pH (p>0,05).
Comparison of Drug Induced Hepatotoxicity Incident of Fixed-Dose Combination and Separate Formulations Regimen for Pulmonary Tuberculosis Treatment in Hospital Sukabumi
Authors: Nurafni Silvi , Sari Novita , Mulyani Feni
Published: February 2021

Pulmonary Tuberculosis is still a health problem in the world, including in Indonesia. The World Health Organization reports that Indonesia ranks third the highest pulmonary tuberculosis case in the world. The regimen for treatment of pulmonary tuberculosis is isoniazid, rifampicin, pyrazinamide, and ethambutol, which has been used either as Fix-Dose Combination (FDC) or as SF (SF). These drugs induced hepatotoxicity side effect. The aims of this study was the comparison of drug induced hepatotoxcity incident of FDC and SF regimen for pulmonary tuberculosis treatment. This study was an observational with retrospective method in 130 pulmonary tuberculosis patients with category I (65 patients have used FDC and 65 patients have used SF). The result showed that based on the severity level of DIH were the following stage I as many as 36 patients for FDC and 34 patients for SF, stage II as many as 14 patients for FDC and 13 patients for SF, stage III as many as 8 patients for FDC and 8 patients for SF, stage IV as many as 7 patients for FDC and 10 patients for SF. The Mann-Whitney test show no significant differences in the severity level of DIH (P=0,253) in two group.
Differences the Effects of Tuak Dayak and Tuak Aren on the number of Leydig cells and seminiferous tubule thickness
Authors: Sius Usu , Savitri Elisabeth Wahyu , Sisilia
Published: February 2021

Background: Tuak Dayak and Tuak Aren are alcoholic drinks from the fermentation process. The material used by Tuak Dayak is black glutinous rice (Oryza sativa Linn) while Tuak Aren is made from Aren water (Arenga pinnata) tapping water. Infertility is related to ROS levels due to alcohol oxidative stress. The purpose of the study was to determine the difference in the effect of Tuak Dayak and Tuak Aren against the number of Leydig cells and the thickness of the seminiferous tubular tissue. Method: This study uses an experimental method to design a post-test only control group. Subjects were 25 rats divided into 5 groups with treatment for 4 weeks. Data are presented as standard deviation (mean ± SD). Furthermore the normality test (Shapiro Wilk) and homogeneity test (Levene Test). If the data is normally distributed and homogeneous, one way ANOVA test is performed. Post HOC / LSD test was performed to determine differences between groups (p-value ≤ 0.05). Then the Kruskal Wallis test if the distribution data is abnormal and not homogeneous and continued by the Mann Whitney test to know the difference between the two groups (p-value ≤ 0.05). Results: The number of Leydig cells in KTA3 is significantly lower than KTD1 (0.68) with a p-value of 0.020, this is also found in KTA4 significantly lower than KTD2 (0.920) with a p-value of 0.003, this study proves that Tuak Aren is more damaging than Tuak Dayak. While the thickness of the seminiferous tubules in KTA3 is significantly lower than KTD1 (0.49) with a p-value of 0.006, so also on KTA4 is significantly lower than KTD2 (0.71), it is evident that Tuak Aren also affects the depletion of seminiferous tubule thickness compared to Tuak Dayak. Conclusion: Significantly damage occurred in Leydig cells and depletion of seminiferous tubular tissue in test animals exposed to Tuak Aren more than Tuak Dayak. The more the number of Tuak drinks consumed the more cell damage that occurs.
Optimization Sonication Time and Dilution Factor in Determining the Concentration of Endotoxin Challenge Vial with Kinetic Turbidimetric Method
Authors: Novi F , Yati S , Siska E , Agie A G
Published: February 2021

ECV has a specification certificate of analysis (CoA) worth 9616 EU/mL where the limit of acceptability recovery is in the range of 50 – 200 percent (4808 EU/mL - 19232 EU/mL). The verification results of ECV concentration with kinetic turbidimetry method showed recovery outside the lower limit of the predetermined range less than 50 percent. This is due to endotoxin adsorbed onto the surface of the glass. To get a recovery that goes within the limits of acceptability then do the time variation of sonication (5; 10; 15; 20; 25; 30) minutes and variations of the dilution factor of 10−4; 10−5. The result showed that the optimum sonication time was 25 minutes with a 10−4 dilution factor. The average concentration of ECV obtained worth 7828,98 EU/mL with a recovery 81,4 percent. The validation test showed a significant correlation coefficient values (-0,9963); and the precision of data with CV < 2/3 CVH, control of graph showed that the data was homogenic; the value of LOD (1070,6823 EU/mL); LOQ (3568,9411 EU/mL) and percent recovery value was 81,0844 percent. Suggested for further research to optimize the use of buffer solution as a solvent, but it also can optimize the temperature and the frequency of the sonication process.
Effect of Ethanolic Extract Terong Belanda (Solanum betaceum Cav.) Peels of Antioxidant Activity by In Vitro
Authors: Rahmawati Riana Putri , Retnowati Eko , Devi Ridyasari Kamela
Published: February 2021

The use of antioxidants from natural ingredients has been carried out research to test the antioxidant activity of Terong Belanda (Solanum betaceum Cav.) peels. Flavonoids contained in the peels of Terong Belanda (Solanum betaceum Cav.). Natural antioxidants could be inhibit the formation of free radicals in the body. Free radicals that too much in the body would be oxidative stress, thus requiried an antioxidant to inhibit it. This purpose of research to determine the antioxidant activity of flavonoid compounds from Terong Belanda (Solanum betaceum Cav.) peels by IC50 value. The method of ethanolic extract of Terong Belanda (Solanum betaceum Cav.) peels by maceration for 1x24 hours with 70% ethanol solvent. The filtrate obtained was then evaporated with waterbath until thick extract was obtained and continued for antioxidant testing. The antioxidant power in this extract determined by the radical capture test of 2,2-diphenyl-1-picrylhydrazyl (DPPH) used UV-Vis spectrophotometry with a wavelength of 517 nm. The results showed positive from Terong Belanda (Solanum betaceum Cav.) peels contained flavonoids with an average value of IC50 45,14 ppm, while vitamin C value of IC50 4,730 ppm both of showed very strong antioxidants.
The Solvent Effect of Hand sanitizer Formulation from Pecut Kuda (Stachytarpheta jamaicensis [L] Vahl) extract
Authors: Ramayani S L , Hastuti R S , Hapsari G V , Prabandaru B T , Widiyarini D
Published: February 2021

Staphylococcus aureus and Escherichia coli are a major cause of various humans and animal infections. Washing hands is a simple matter to eliminate and minimize germs on the hands with antiseptic hand sanitizer. Pecut kuda (Stachytarpheta jamaicensis (L) Vahl) contains a flavonoid compound known as antibacterial activity. Flavonoids are generally soluble in polar solvents. The type of solvent used for extraction influences which compounds are isolated. The purpose of the study was to asses the solvent effect of hand sanitizer formulation from pecut kuda extract. METHOD. Extract of pecut kuda was made by used three combination solvent of water and ethanol. There were 0:1; 1;1; and 1:2 for water and ethanol. Every formula was tested antibacterial activity against E.coli and Staph aureus. The highest antibacterial activity was made hand sanitizer gel by used optimization from HPMC K100M and PEG used Design-Expert software. The antiseptic test was carried out on the best formula. RESULT. The result showed the best antibacterial activity was 0:1 composition of water and ethanol. The best formula of hand sanitizer was made of 11,7% HPMC K 100M and 88,3% PEG. That formula had antiseptic activity as 69,19%.
The Change of Fruit Supply Chain in Response to Covid-19 Pandemic in West Java, Indonesia (Case Study of Anto Wijaya Fruit)
Authors: Widi Agustina , Sari Erin Diana , Jahroh Siti
Published: February 2021

Indonesia is the heaven of tropical fruits. However, as tropical fruits are perishable, the specific supply chain is needed to ensure the fruits are able to reach the customers in good condition. West Java Province is one of fruits producing centers in Indonesia. Anto Wijaya Fruit is a prominent company of fruits supply, especially for mango, in West Java. This study aims to (1) identify fruit supply chain management before the pandemic, (2) analyze the emerging challenges due to the outbreak, and (3) propose a scheme of fruits supply chain in response to the Covid-19 pandemic in the case of Anto Wijaya Fruit. This study was conducted from January to May 2020. Several key persons were interviewed along the chain from the producers up to the end customers. Qualitative analysis was employed in the framework of Food Supply Chain Networking (FSCN). The results showed that, firstly, Anto Wijaya Fruit mango supply chain has not been implemented optimally. This is seen from the supply chain business process flow that has not been integrated as a whole, in supply chain management contractual agreements have not yet been made between farmers and company, Anto wijaya fruits mango supply chain has not been implemented optimally. This is seen from the supply chain business process flow that has not been integrated as a whole, in supply chain management contractual agreements have not yet been made between farmers and company, then the supply chain resources in cultivation activities until distribution is still done simply. Companies need to optimize the use of technology for supply chain effectiveness and improve company management systems to make planning and control. Secondly, there were several challenges such as movement restrictions, shorter operating time of the markets and sales are made online that affected the supply chain management of the company. Lastly, in response to these challenges, a scheme using internet and communication technology (ICT) is proposed.
Business Development Strategy Through Value Creation Analysis in Automotive E-Commerce Platform (Case Study: XYZ Platform)
Authors: Putri Patty Maria Jacklyn Brilyani , Nurhayati Popong , Muhibuddin Fuad Wahdan
Published: February 2021

The Positive growth of automotive industry presents XYZ as an integrated digital automotive platform, which serve e-commerce for new and second hand vehicles. Since XYZ Platform launched, has not contributed to company’s sales growth as well. In spite of macro and micro economic factors, we argue lack of value proposition provided by company. This paper aims to analyze XYZ platform value creation in relation to map business strategy. The study was qualitative research. Value proposition canvas, brand consideration matrix, four-step framework were conducted as tools analysis. Result shown the consumer have a low level of product knowledge and brand consideration of XYZ Platform, even though its value fit with consumer expectation. Furthermore, VPC 1.0 were formulated as business strategy to enhance XYZ Platform Session leads to transaction by considering seven functional element and two emotional elements.
Proposed a New Sustainable CSR Model Canvas for Effectiveness and Evaluation of Current CSR Programs (Case Study: PD PAL Jaya)
Authors: Pakuanzahra Aqira , Achsani Noer Azam , Abdullah Asadudin
Published: February 2021

When managed effectively, a Corporate Social Responsibility (CSR) program can produce significant benefits in terms of reputation and returns as well. Therefore, CSR should be evaluated regularly. However, based on a survey conducted by PIRAC (Public Interest Research & Advocacy Public), only 30 percent of 226 companies in Indonesia evaluate their CSR programs. This research was conducted to analyze the effectiveness of PD PAL Jaya’s lavatory CSR project Petamburan District, Central Jakarta. PD PAL Jaya is Jakarta’s Regional State-Owned Enterprise that operates in the waste management. This research has been conducted by using descriptive analysis on CSR Project, Importance Performance Analysis (IPA), and concluded with purposed a new canvas model to mapping various indicators to the Sustainable CSR Model Canvas. Based on the results by using IPA analysis, PD PAL Jaya’s CSR with the lavatory project is under the wishes of the community. However, several things need to be improved, especially in construction and socialization. The final results of the research are Sustainable CSR Model Canvas and recommendations to PD PAL Jaya in order to improve the quality of the next CSR programs.
Eclectic approach as idea of e-educounseling preliminary system model
Authors: Jumail  , Noordin M F , Ibrahim N M , Mujastuti R , Risanty R D
Published: February 2021

Counseling is a dynamic and purposeful relationship between counselor and counselee. Directive approach was a counseling approach that concerned on the powerful experience of the counselor, which is he/she can direct the student to solve problem accordingly. Non-directive approach was a counseling approach that concern on the student centered counseling, which is allow the student to independency solve their own problem by counselor motivation and encouragement. Eclectic approach is introduced as one of the approaches which are integrated both directive and non-directive to be powerful balance educational counseling approach. In this study the superiority and experience of the counselor and independency of the student are considered as a balance key of counseling process. Furthermore, some weaknesses on the most of current e-counseling system model was focused on the users, however they forgot that each counseling approach has it unique process that can be considered. Therefore, this study try to integrate two different approach directive and non-directive become one known approach called eclectic approach. As the objective of the study an e-educounseling system model based eclectic approach are designed. The e-educounseling system model is focused on the real eclectic counseling process and not only focused on the functional requirements.
Comparison of NB and NB-PSO to determine level of vehicles sales
Authors: Romli I , Pusnawati E , Jaenal M , Siswandi A
Published: February 2021

Nowadays, there are various types and brands of vehicles in Indonesia, especially kinds of motor vehicles. In this case, motor vehicles are cars, trucks, and buses (exclude the motorcycles). This research classified the various brands of motor vehicles in the form of classes that are Well Selling (Laris) and Not Selling (Tidak Laris), so that consumers and producers can find out which motor vehicles brands are well selling based on their category and output. This study analyzed 3908 data into 3126 training data and 782 testing data. The data was obtained from the GAIKINDO (Indonesian Automotive Industries Association) site. There were 19 attributes but to ease the research, the attributes used are 8 (including 1 Class attribute to facilitate the search for the best-selling motor vehicles). This research compared the accuracy value among Naive Bayes method and NB-PSO (Naive Bayes- Particle Swarm Optimization) by using such dataset. NB-PSO is adjusted parameters of 1 inertia weight and 5 population size. The results of classification accuracy with the Naive Bayes method produces accuracy values of 92.11%, Precision values: 86.57% and Recall values: 97.12%. Meanwhile, the solutions of NB-PSO have accuracy values of 92.44%, Precision values: 87.07% and Recall values: 97.18%, so PSO method was able to improve the accuracy of classification of NB as many as 0.33%.
Analysis of Competitive Strategy to Create Sustainable Competitive Advantages Seen From the Nine Factor Model and Bacos Treacy Model
Authors: Hayati Nur , Jaelani Evan , Sopian Dani , Dewi Intan Pramesti
Published: February 2021

This paper seeks to examine the importance aspects of strategy and information technology to create sustainable competitive advantage. Various discussions about aspects of the strength of competition, information technology, and competitive strategies by the researchers were previously analyzed. This study seeks to design a conceptual framework about the important role of strategy and information technology in creating sustainable competitive advantage. Various scientific articles from leading journals are reviewed again, especially articles that discuss about strategies (such as the theory of Porter Diamond Model and development). Based on various previous studies, a conceptual model was built to include various relationships between important concepts that are related. In the context of creating sustainable competitive advantage, aspects of The Nine Factor Model and Bakos-Treacy Theory have a significant role in pushing Sustainable Competitive Advantage. In addition, the two concepts are ultimately useful for building creativity, the creation of value, and competitive culture in each organization. This study seeks to design an integrated conceptual framework about the important role of strategy, innovation, and information technology in creating sustainable competitive advantage based on a recent literature review. Therefore, the conceptual framework that is built needs to be reviewed, strengthened, and continued with other empirical studies.
Viral Marketing Strategies through Social Media of Interesting Visitor (Case Study Cafes Instagramable in Bandung)
Authors: Yuniati Ulfa , Hardi Nora Meilinda , Primasari Intan
Published: February 2021

Many cafes in Bandung each carrying different concepts in attracting visitors, both the product offered or interior design. To create viral, one of the cafes with its strategy is the concept of current by the presence of the picture of the one spot photogenic or sufficient Instagramable so that the visitors can interested in enshrine and shares the experiences on Instagram. The purpose of this research strategy is to analyze viral marketing through social media in attracting people to refer to the post at the cafe. The methodology used in the case study. Research is conducted by marketing strategies cafe assessed, as will successful attract visitors because a convenient place to hang out and Instagramable.
Wireless Scoreboard Technology Architecture for Athlete Performance Data Warehouse at Multiple Table Sports Games
Authors: Dwipriyoko Estiyan , Widjajani  , Sari Wahyu Purnama , Mujiarto
Published: February 2021

The presence of technology brings many new changes that facilitate human life. In the field of information for sports competition results in the form of a scoreboard. Scoreboard is used in sports tournaments as a display of the results of a tournament. So everyone who is in the arena can find out the results of the tournament score. Scoreboard generally displays the value of the tournament, displays the time of the tournament and the number of rounds during the tournament. The majority of scoreboard shows only one result from one tournament, while there are tournaments where several teams compete simultaneously in one room, so the audience has difficulty knowing the score of other tournaments even though they are in one room. For example, in a pool or table tennis tournament, in one arena there are more than one team competing. At that time, usually the scoreboard is only on each table. That causes a limited number of scoreboard that can be seen by the audience, not all tournaments. Meanwhile, the scoreboard used in Indonesia also still uses the remote and cable as the transmission media when inputting scores. The remote is held to a distance according to the length of the cable which is very impractical. The space for the remote holder is also not flexible because the remote is connected by a cable. Therefore, in inputting the score there is no need to use cable anymore, because this application is web-based and connected via a wireless network. The purpose of this research is: to make it easier to record scores of tournaments with multiple tables, and to record performance statistics from athletes. The benefits of this research are: to make it easier to record values because they are connected to a wireless network and display them in real time, and get athlete performance statistics during the competition.
Layout Classification of Red Onion Disease on Onion Leaf Image Using Artificial Neural Network
Authors: Mubarokhah U N , Dijaya R , Maulana M I
Published: February 2021

Shallots are one of the main ingredients that are often found throughout Indonesia. The optimal yield of onion plants is influenced by several factors, one of which is disease. The purpose of this study is to classify the image of leeks to identify onion diseases using Artificial Neural Network (ANN). Disease classification on leeks is leaf rot (anthracnose) and purple spots. The steps taken in the classification of leek disease are data input, pre-processing, feature extraction, machine learning. Several steps are carried out on the leek image, among others, improving image contrast, conversion of sRGB to LAB, segmentation using clustering, grayscale images, and binary images. After pre-processing, the next step is extracting features based on colour features and texture features. The colour features consist of Standard Deviation, Kurtosis, Mean, and Skewness. While the texture features consist of Contrast, Correlation, Energy, Entropy, Variance, and IDM. The end result of this system will show whether the leeks are included in the class of leaf rot (anthracnose) or purple spots or healthy leaves.
Decision Support System for Determination of Decoration Service Employee Using Weighted Product Method (Case Study on Sanggar Puri Ethnic Decoration)
Authors: Gunawan H , Maramdhani  , Chazar C , WArthana Y
Published: February 2021

The amount of expertise needed to complete a decoration services project makes the leaders of the Puri Ethnic Decoration studio often have difficulty in making decisions to determine employees in accordance with the criteria of the project to be worked on. The method used in making the decision to determine the decoration service employee uses the Weighted Product (WP) method in the form of a Weighted Product (WP) calculation based on the amount of quota available in each project. The results of this study are in the form of a decision support system application that employee alternative solutions will be involved in the decoration service project.
Model of Decision Support Method with SMART According to Choosing Venue
Authors: Abdullah Siti Sarah , Rizkia Finni
Published: February 2021

Many factors are considered when choosing venue for event, including budget, facility, location convenience, and capacity. This has become one of the factor for the success of an event. Choosing wrong event location results in inconvenience in organizing the event. Therefore, we need a model so that the event can be held comfortably. the model is created by selecting a location that matches the criteria of the event that matches the desired criteria. One of the appropriate methods to be used in decision making is the SMART (Simple Multi Attribute Rating Technique) method. To support research, a simulation module is created to select the location of the event. Based on the test scenario, it was found that the solution given by the system was accurate in choosing events and approaching human ability to make decisions.
Design and Application Data-Based Employee Eat Barcode Scanner
Authors: Lestari Ninik Sri , Sukirno  , Fadriani Hetty , Sujana Ahmad , Herdiana Yudi , Hidayat Rahmad
Published: February 2021

The process of managing data and eating employees is underway now in the process of counting the number of employees who take servings still use conventional methods. Collection without using other tools so that in calculating the number of employees who take portions of food is very susceptible to errors, and making reports are still handwritten on paper so that it cannot present reports quickly and accurately. A system development process to produce software that facilitates the process of managing employee meal data. This application is to develop design software to manage employee data input using a barcode scanner and prepare reports for parties involved in management. This software development process uses the system development life cycle method that starts from the system analysis phase, system design, to the system implementation stage. The expected results of the development of this software can help officers involved in the process of managing employee data, such as the calculation of the number of employees taking food portions, and reporting by the system designed based on the results of the analysis of the running system, so that it can present the information needed more quickly, accurately, relevant and as expected.
The Effect of Massively Multiplayer Online Game on Player Behaviour
Authors: Machfiroh Runik , Rahmansyah Aris , Budiman Arief
Published: February 2021

Game developers compete to take advantage of digital technology development to make games that allow players to play massively and at the same time. Games, such as Mobile Legend, Fortnite, or Player Unknown Battle Ground (PUBG), are games that widely played by players around the world, including the current generation of young Indonesians. Consciously or not, these games have an influence on players both positively and negatively. The purpose of this study is to determine the effects of these games on player behaviour through 5 dimensions, including the number, content, context, structure, and mechanism of the game, especially in MMOG game. The research approach used mixed methods, with data collection techniques through surveys and interviews. The survey data was carried out using the cluster method with purposive sampling, the samples were university students in Telkom university specializing in multimedia communication design study programs. Data analysis used SEM with PLS approach. Structure modellingwas a multivariate analysis technique. The results of this study indicated that the influence of MMOG games significantly and positively influenced the behaviour of gamers by 0.42.
The Development of Video Learning Based on Videoscrieb Application For Social Science inPrimary School
Authors: Usmaedi  , Adiputra Dede Kurnia , Afrida Tjut , Anggraini Ade Eka , Siswanto Puji , Pamungkas Aan Subhan , Hendriawan Deri , Karyaningsih Dentik
Published: February 2021

This study aims atdeveloping learning video based videoscribe applications on Social Science with the topic of natural phenomena at class VI. The research method used in this study is Research and Development method with stages:potential and problems, data collection, product design, design validation, design revision, and product testing (limited trial). To test the feasibility of thisvideo learning then tested the validation of experts conducted by materialexperts, media experts, and pedagogical experts. After the validation test by theexpert team, then the product test (limited trial) with the subjects of the researchis the students class VI with the number of 43 students. The results of thematerial expert test show that this video learning obtained an average score of 82.85% with very feasible category. The result of the media expert test showsthat this video learning obtained an average score of 88.34% with very feasiblecategory. The results of the pedagogical expert test show this video learningobtained an average score of 85.83% with very feasible category. The producttrial results (limited trial) obtained an average grade of 90.52% with very goodcategory. Based on the results of this study, it can be concluded that learningvideo based on the application of videoscibe is very feasible to be used in SocialScience on natural phenomenon in Indonesia.
Collaboration on Involvement in Improving Science Learning Outcomes through Group Investigation
Authors: Rosfiani Okta , Hermawan Cecep Maman , Maisaroh Siti , Romannada Labib , Mawartika Nur Fadillah , Ramadhan Anwar Ilmar
Published: February 2021

Group Investigation (GI) is a method that emphasizes participation and student activities to find the material of the lesson to learned through available materials and media such as textbooks, communities, internet, environment, and others. To date, group investigation has still not yet been closely investigated. Few published studies have focused on group investigation. However, no previous study has investigated group investigation in the third grade of primary schools specifically in science. The objective of the present work paper is to investigate GI and describe the process of a GI. This classroom action research uses the R&H classroom action research model. Participants in this study were third-grade students in one of the Elementary Schools in South Tangerang, Banten Province, Indonesia. Data has been collected through tests, observations, and documents. Data were analyzed using text analysis and descriptive statistics. This study has shown that GI is proven to improve elementary school students’ science learning outcomes. The evidence from this study also suggests that GI is effective for encouraging students’ involvement in learning, train students’ higher-order thinking skills, and promote behavior collaboration to complete the task.
Improving Students’ Creativity Through Sharing and Jumping Task in Mathematics Lesson Study Activity
Authors: Fauziyah N , Asari S , Ma’rifah U , Uchtiawati S , Husniati A
Published: February 2021

The sharing and jumping task in the learning process are unfamiliar to use in schools in Indonesia. Almost, all schools in Indonesia use student worksheets as sharing tasks without using jumping tasks. Even though jumping task can provide opportunities for students to think higher. This study aims to describe the increase in junior high school students’ creativity in solving mathematical problems through sharing and jumping task. This research is a case study conducted collaboratively among teachers and lecturers in lesson study activities. The results of this study indicate that students can improve their abilities including: (1) communication, (2) collaboration, and (3) critical thinking through sharing task activities. Besides that, students can increase their creativity in solving mathematical problems through jumping task activities. Each student produces different answers. The different answers produced by them in solving problems include three creative indicators, namely (1) fluency, (2) flexibility, and (3) novelty.
Representation of Student’s Creative Thinking Skills: Case Studies on Basic Biology Course
Authors: Minarti Ipah Budi , Lissa
Published: February 2021

Creative thinking skills are one of the life skills needed in the 21st century that can be empowered by learning process. These skills can be a provision for students to solve various problems. The aim of the research to know representation of student’s creative thinking skills in Basic Biology course. Representation is the process by which an object is captured by a person’s senses, then it makes sense to process that the result is a concept / idea with language will be conveyed / expressed again. So this research seeks to uncover the extent of student representation in creative thinking skills especially to find solutions to problems that arise and compile a mini research in accordance with the scientific method. Subjects were student’s of Biology education PGRI Semarang University who take Basic Biology courses in academic year 2019/2020. Data collecting technique of the research was done analysis result of practicum report of Basic Biology course to measured students creative thinking skills. Analysis data technique used descriptive analysis technique. The result showed that the representation of students’ creative thinking skills is included in the enough category. The results of students’ creative thinking skills for each indicator can be obtained that students have flexibility, elaboration, and fluency in good category. Meanwhile, the original thinking skills of most students is still in the lacking category.
Mathematical Proficiency Profile of Prospective Mathematics Teacher Students
Authors: Gunawan I , Nurhayati L , Widjajani  , Hendrawan Budi
Published: February 2021

This study aims to look at the profile or category of prospective mathematics teacher students in terms of their mathematical ability. This research is important because it will provide data for lecturers and study programs to develop learning models and the curriculum development process. This research is a kind of qualitative research with a grounded theory approach, and involves 23 prospective mathematics teacher students as respondents. The respondent’s profile description is guided by a mathematical rubric proficiency and a set of written questions, questionnaires and interviews. The results of this study were obtained two categories of mathematical proficiency of prospective mathematics teacher students, namely the average category and the advanced category. Based on the indicators of each aspect of mathematical proficiency, it was found that in general the presentation of average category was still above 60% and the percentage of advanced category was still below 40%.
The Effectiveness of the Learning Cycle Model (5E and 7E) in Learning to Build Flat Side Sides Viewed From Student Self-Eficacy
Authors: Puspita W R , Fardillah F
Published: February 2021

The purpose of this study was to test the effectiveness of mathematics learning using the 5E learning cycle model and the 7E learning cycle model; as well as distinguishing more effective learning between the learning cycle models 5E and 7E in terms of the self-efficacy of class VIII students in learning to build flat side space. This research is a quasi-experimental study with a pretest-posttest non-equivalent comparison-group design. The study population included all eighth grade students of state junior high schools in Yogyakarta City consisting of high and medium level schools. With stratified random sampling technique, 2 schools were selected as research samples. The research instrument used student self-efficacy questionnaires. To test the effectiveness of the LC 5E model and the LC 7E model, whether there is an interaction between the learning model and the school level, as well as whether there is a difference in student self-efficacy in high school and medium school, the two way ANOVA test is used. Furthermore, to compare the self-efficacy of students who use the LC 5E model and the LC 7E model in high school and high school level students are using an independent sample t test, while to test whether there is a difference in effectiveness between the LC 5E model and LC 7E model against self-efficacy students used the N-Gain effectiveness formula. Each analysis was carried out at a significance level of 5%. The results showed that: 1) there was no difference in self-efficacy between students whose learning used the LC 5E model and students whose learning used the LC 7E model; 2) the self-efficacy of students who use the LC 5E model is not higher compared to those who use the LC 7E model in high and medium level schools; 3) there is no interaction between the learning cycle model with the school level on learning to build flat side space; 4) there is no difference in self-efficacy between students in high schools and students in medium schools; and 5) there is no difference in effectiveness between LC 5E and LC 7E models on student self-efficacy.