bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermodynamics of chemical waves
Authors: Avanzini Francesco , Falasco Gianmaria , Esposito Massimiliano
Published: December 2019

Chemical waves constitute a known class of dissipative structures emerging in reaction-diffusion systems. They play a crucial role in biology, spreading information rapidly to synchronize and coordinate biological events. We develop a rigorous thermodynamic theory of reaction diffusion systems to characterize chemical waves. Our main result consists of defining the proper thermodynamic potential of the local dynamics as a nonequilibrium free energy density and establishing its balance equation. This enables us to identify the dynamics of the free energy, of the dissipation, and of the work spent to sustain the wave propagation. Two prototypical classes of chemical waves are examined. From a thermodynamic perspective, the first is sustained by relaxation toward equilibrium and the second by nonconservative forces generated by chemostats. We analytically study step-like waves, called wavefronts, using the Fisher-Kolmogorov equation as a representative of the first class and oscillating waves in the Brusselator model as a representative of the second. Given the fundamental role of chemical waves as message carriers in biosystems, our thermodynamic theory constitutes an important step toward an understanding of information transfers and processing in biology.
Revisiting Thomson equation for accurate modeling of pore scale thermodynamics of hydrocarbon solvents
Authors: Al-Kindi Ilyas , Babadagli Tayfun
Published: December 2019

As stated by the classical Thomson equation, the pore scale thermodynamics of a solvent is different from bulk conditions, being critically controlled by capillary characteristics. This equation shows that the boiling point temperatures decrease remarkably as the pore size becomes smaller, after a threshold value. This paper experimentally investigates this phenomenon for hydrocarbon solvents and compares the results with the values, obtained from the Thomson equation, to test its applicability in modeling heavy-oil recovery by solvents under nonisothermal conditions. As an initial step, the boiling point temperatures of two single-component solvents (heptane and decane) were measured by saturating Hele-Shaw type cells with variable apertures (ranging from 0.04 mm to 5 mm) and monitoring the boiling process. One experiment was run with a thickness of 12 mm to represent the bulk case. As the aperture (pore size) became smaller, the boiling point temperature decreased. For example, the measured boiling temperatures of heptane and decane were approximately 58 °C and 107 °C for the aperture values less than 0.15 mm, which were considerably lower than the “bulk” values (around 40%). In the next step, the same experiments were repeated using micromodels, representing porous media. Using the Thomson equation, the boiling points of the selected liquids were mathematically computed and compared with the experimental results from Hele-Shaw and micromodel experiments. Finally, modifications to the Thomson equation and alternative formulations were suggested.
High transmittance Er-doped ZnO thin films as electrodes for organic light-emitting diodes
Authors: Shi Ying-Li , Hu Yun , Wang Shuang-Peng , Liao Liang-Sheng , Ling Francis Chi-Chung
Published: December 2019

Rare earth element-Erbium (Er) doped ZnO (ErZO) thin films were deposited on glass substrates by pulsed laser deposition (PLD). The effect of the Er doping concentration on photoelectric properties of ErZO thin films was investigated in the range of 0–2.0 wt. %. The Er doping resulted in the improvement of n-type conductivity as compared with intrinsic ZnO thin films. The optimized ErZO thin films present the low resistivity of 3.4 × 10−4 Ω/cm, high carrier concentration of 5.9 × 1020/cm3, and high visible optical transmittance (∼93%) when the Er content is 1.0 wt. %. The ErZO thin films were used as transparent anodes to fabricate organic light-emitting diodes (OLEDs). Impressively, with ErZO as the anode, the current efficiency of the OLED device can reach as high as 86.5 cd/A, which was increased by 14% when compared with the reference OLED device (76.0 cd/A) using indium tin oxide as the anode.
Growth and characterization of Ca—Mo mixed oxide films on Mo(001)
Authors: Lockhorn Maike , Kasten Peer Eike , Tosoni Sergio , Pacchioni Gianfranco , Nilius Niklas
Published: December 2019

Calcium-molybdate ultrathin films were prepared on a Mo(001) crystal and characterized by means of scanning tunneling microscopy (STM), electron diffraction, photoelectron spectroscopy, and density functional theory (DFT). The films were grown via reactive Ca deposition, followed by a vacuum annealing step to trigger Mo diffusion from the support into the Ca—O ad-layer. A series of crystalline oxide configurations was revealed that evolves from a (3 × 3) to a (4 × 4) and (6 × 6) superstructure with increasing annealing temperature and finally decays to a binary MoOx phase. The stoichiometry of the initial (3 × 3) phase was estimated to CaMo3O6, yet with decreasing Ca concentration at higher temperature. In the search for a suitable structure model for DFT calculations, we have started with a bulk CaMo5O8 configuration that was iteratively modified to match the experimental data. The optimized structure is made of regular sequences of flat-lying and upright standing Mo octahedrons, being separated from each other by Ca2+ ion rows. With decreasing Ca content, the central Mo units grow in size, which explains the observed transition from (3 × 3) to (6 × 6) superstructures upon annealing. The proposed structure model rationalizes the periodicity and corrugation of the regular oxide surface as well as the characteristic domain patterns in the film. Its electronic properties, as deduced from STM conductance spectroscopy, can be correlated with an increasing metallicity of the ad-layer upon annealing. Our work presents a facile pathway to produce high-quality ternary oxide films via interdiffusion of atoms from a suitable metal support into a binary oxide layer.
Influence of thermostatting on nonequilibrium molecular dynamics simulations of heat conduction in solids
Authors: Li Zhen , Xiong Shiyun , Sievers Charles , Hu Yue , Fan Zheyong , Wei Ning , Bao Hua , Chen Shunda , Donadio Davide , Ala-Nissila Tapio
Published: December 2019

Nonequilibrium molecular dynamics (NEMD) has been extensively used to study thermal transport at various length scales in many materials. In this method, two local thermostats at different temperatures are used to generate a nonequilibrium steady state with a constant heat flux. Conventionally, the thermal conductivity of a finite system is calculated as the ratio between the heat flux and the temperature gradient extracted from the linear part of the temperature profile away from the local thermostats. Here, we show that, with a proper choice of the thermostat, the nonlinear part of the temperature profile should actually not be excluded in thermal transport calculations. We compare NEMD results against those from the atomistic Green’s function method in the ballistic regime and those from the homogeneous nonequilibrium molecular dynamics method in the ballistic-to-diffusive regime. These comparisons suggest that in all the transport regimes, one should directly calculate the thermal conductance from the temperature difference between the heat source and sink and, if needed, convert it into the thermal conductivity by multiplying it with the system length. Furthermore, we find that the Langevin thermostat outperforms the Nosé-Hoover (chain) thermostat in NEMD simulations because of its stochastic and local nature. We show that this is particularly important for studying asymmetric carbon-based nanostructures, for which the Nosé-Hoover thermostat can produce artifacts leading to unphysical thermal rectification.
Use of Au@Void@TiO2 yolk-shell nanostructures to probe the influence of oxide crystallinity on catalytic activity for low-temperature oxidations
Authors: Lee Ilkeun , Zaera Francisco
Published: December 2019

A series of Au@Void@TiO2 yolk-shell structures were synthesized and characterized, and their catalytic activity was tested for the oxidation of carbon monoxide. The target of this work was to evaluate the effects of (1) the crystallinity of the TiO2 shell and (2) the presence of titanate phases. Transmission electron microscopy and X-ray diffraction data show that increasing calcination temperatures, from 850 to 1250 K, leads to the formation of larger titania crystallites. These crystallites are typically in the form of anatase, but some rutile is also made at high temperatures. The general yolk-shell nanostructures retain their basic characteristics upon calcination and upon treatment with HCl (used to remove the titanate phases), but a few structural and chemical changes do take place: (1) the void-space diameter is reduced by approximately 10% when going from TCalc = 850 K to TCalc = 1250 K, a change that is accompanied by a decrease in the surface area (estimated from N2 adsorption-desorption isotherms); (2) the shell thickness remains unaffected by either calcination or HCl treatment; (3) the pore volume also remains approximately constant with increasing calcination temperature in the catalysts free of titanates but diminishes significantly in the samples with titanate phases; (4) the mesoporosity is minimal in all yolk-shell nanostructures but more noticeable with the pure TiO2 shells; (5) the titanates have high Na content (measured by X-ray photoelectron spectroscopy), but that Na is fully removed upon treatment with HCl; (6) no Ti3+ was detectable in any of the samples, but silica, together with C and (minor amounts of) N, was present in all; (7) all Au is in metallic form; (8) two temperature regimes were observed for the catalytic oxidation of CO, as reported for other similar samples in the past, an Arrhenius regime around or above room temperature, and a cryogenic range going to temperatures as low as 120 K; (9) the latter regime is only seen with the samples containing titanate phases; (10) the titanates seem to also aid in the oxidation at higher temperatures; and (11) in general, increasing titania crystallinity leads to a decrease the catalytic activity.
On response spectra and Kramers-Kronig relations in superposition rheometry
Authors: Curtis D. J. , Davies A. R.
Published: December 2019

In a recent paper, we derived expressions for determining the rate-dependent response spectra directly from parallel superposition rheometry data for the case of a certain Lodge-type integral constitutive model. It was shown that, within the confines of linear Yamamoto perturbation theory, the corresponding parallel superposition moduli satisfy the classical Kramers-Kronig relations. Special bases were presented to convert parallel superposition moduli to orthogonal superposition moduli. In the current paper, we obtain similar results for the integral models of Wagner I and, more generally, K-BKZ. These results facilitate the physical interpretation of parallel superposition moduli and direct model-based comparison of parallel and orthogonal superposition moduli in the study of weak nonlinear response.
Doping effects on the stacking fault energies of the γ′ phase in Ni-based superalloys*
Authors: Li Weijie , Wang Chongyu
Published: December 2019

The doping effects on the stacking fault energies (SFEs), including the superlattice intrinsic stacking fault and superlattice extrinsic stacking fault, were studied by first principles calculation of the γ′ phase in the Ni-based superalloys. The formation energy results show that the main alloying elements in Ni-based superalloys, such as Re, Cr, Mo, Ta, and W, prefer to occupy the Al-site in Ni3Al, Co shows a weak tendency to occupy the Ni-site, and Ru shows a weak tendency to occupy the Al-site. The SFE results show that Co and Ru could decrease the SFEs when added to fault planes, while other main elements increase SFEs. The double-packed superlattice intrinsic stacking fault energies are lower than superlattice extrinsic stacking fault energies when elements (except Co) occupy an Al-site. Furthermore, the SFEs show a symmetrical distribution with the location of the elements in the ternary model. A detailed electronic structure analysis of the Ru effects shows that SFEs correlated with not only the symmetry reduction of the charge accumulation but also the changes in structural energy.
Enhancement of OTP stream cipher algorithm based on bit separation
Authors: Arisman  , Nasution Mahyuddin K M , Efendi Syahril
Published: December 2019

Along with the increasing development of cryptography and computer science, It is appropriate that we try to prepare and improve the ability of cryptographic algorithms To counteract and prevent threats. Generally This algorithm encrypt the text with combined using key. The original message must be the same length of the key used. Actually in this study, a new method for improve OTP was successfully carried out. first, key will be generated using PRNG algorithm then bits of Plaintext will be separate each into 2 bits then rotating it key using matrix table, further key will be inserted into separated Plaintext and re-separate each it into 1 byte, hereinafter the new Plaintext will be XORed with a rotated key. To produce more advanced cipher.
Improving the Modelling of Robot Bunker With Camera
Authors: Naf`an Emil , Sulaiman Riza , Mohamad Ali Nazlena , Priambodo Bagus , Hazidar Al Hamidy , Kudr Nseaf Asama , Pratama Putra Zico , Theozard Fikri Harry , Handriani Inge
Published: December 2019

This study proposed an improvement on the model of robot bunker with camera. This is designed in order that robot is difficult to steal. The previous model is equipped with a security system. However, the system is not equipped with a camera so that when theft occurs, the action cannot be recorded. This study used 16 rules, because of the addition of variable pixels produced by the camera. The simulation is carried out as many as 30 (thirty) possible conditions of actions taken by the people on the robot with Matlab Fuzzy Toolbox. In the result of the simulations, the test results can change from safe conditions to alert or dangerous conditions. This is caused by changes in the number of pixels. The pixel value increases when someone tries to take a robot from the robot bunker. Thus the proposed model is more sensitive in detecting changes that occur around the robot bunker. Therefore this model can be applied in securing/protecting robot from theft.
Expert System Application for Diagnosing of Bipolar Disorder with Certainty Factor Method Based on Web and Android
Authors: Muhammad A , Hendrik B , Iswara R
Published: December 2019

The purpose of this research is to design and develop software engineering of expert system based on web and android that is capable of diagnosing Bipolar Disorder to get the same level of solution and information with the expert. The expert system application has been developed by using PHP as the web programming language and by using Java with the Web View method as the android programming, and by using MySQL as the databases. This research used analytical method of certainty factor based on the user answers for the questions asked by this expert system. The result showed that the user condition related with bipolar disorder and completed with suggestion of solution medical or treatment and the list of psychiatrist. The conclusion of this research is certainty factor method evidently could give result in the form of early diagnosis and could provide the consistent and effective solutions.
Supplier Selection by Using Analytical Hierarchy Process (AHP) and Techniques for Order Preference Methods with Similarities to Ideal Solutions (TOPSIS)
Authors: Siregar I
Published: December 2019

One company that is engaged in drying coffee beans has problems, the problem is suppliers have not been able to meet the criteria set by the company. Within the last six months, there were coffee bean sacks that the company rejected because of the mismatch of the quality of the coffee beans obtained from suppliers with the standards set by the company so that the selection of suppliers that could meet the criteria of the company was needed. The criteria used by the company are quality, price, quantity, delivery time and response to claims. This study aims to determine the best suppliers based on criteria weights and to rank each alternative supplier. The method used by researchers for this problem is the method of Analytical Hierarchy Process (AHP) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS). This method is used to determine supplier priorities. Determination of criteria and subcriteria is built based on expert answers using a questionnaire. Assessment of the importance of criteria and alternative weights based on the AHP questionnaire. The results obtained using this method indicate that the supplier who gets the first and deserves priority is PT ABC with the highest preference value of 0.8639.
Application of Theory of Constraints in Bottleneck Work Stations Optimization
Authors: Siregar I
Published: December 2019

Manufacturing industries engaged in making of instant noodles in Medan city have problems in production planning. The process studied is the manufacture of GCGEP, GCST and G-1000GSP products. The constraints faced by the company are the presence of bottlenecks on mixing and cooking work stations due to differences in capacity between the work station and the previous work station, namely the sieving work station and dough forming work station. Bottleneck work stations happens in mixing work stations in January, February, March, May, June, July and August 2014 as well as cooking work stations in January, May and July 2014. This study uses the principle of continuous improvement of Theory of Constraints (TOC) to eliminate constraints on bottleneck work stations and to facilitate the overall production flow. In applying TOC, to optimize the production master schedule and to know the maximum advantage cost, linear programming method is used. After the optimal master schedule results are known, revisions to rough cut capacity planning are carried out and the result shows that the bottleneck work station found has become a non-bottleneck work station.
Expert systems diagnosing of banana pests and diseases use case-based reasoning method with android
Authors: Kurnia Hezy , Ariandi Vicky , Heriyanto  , Elva Yesri
Published: December 2019

Designing a Case-based rasoning (CBR) android application is a method used to build a knowledge-based system. Source of system knowledge is obtained by collecting handling cases by an expert or expert. In this study the author makes or analyzes Banana Plant disease through the symptoms experienced by the Plant so that it can help a person or farmer in diagnosing the types of diseases and pests of banana plants based on their symptoms. The advantage with the application of this method is that farmers do not need to ask symptoms and diseases to an expert. This application is expected to make it easier for farmers to recognize the types of pests and diseases of banana plants and also this application has a clear calculation of the pests and diseases of banana plants. This application can be done offline.
Model development measurement of interests based on expert system
Authors: Erdisna  , Ganefri  , Ridwan  , Novita Rice , Wanayumini
Published: December 2019

This article aims to develop an expert-based interest-based measurement model to provide an overview of the interests that can assist in decision making of vocational interest decisions in the vocational field to be on the right target. The method used by designing vocational interest measurement instrument by producing four personality types used as knowledge base is Tangible, Thinking, Flexible and Entrepreneur (TTFE) and integrated with expert system concept which makes a practical and efficient measurement model. The generated interest measurement model can help students quickly to overview the interest in decision making majors for higher education, can conduct online consultation, documentation, and can be used as a documentation file consultation portal at an institution.
Interactive Map Model of Flat Design for Istano Basa Pagaruyung Tourism Development
Authors: Wiraseptya T , Imani R , Afdhal M , Yanto H
Published: December 2019

The power in conveying messages to communicants is a form of active media. There are many things and forms of media that developed in the digital era today. Of course, the development of the media to be more friendly and close to the community will make it easier to convey the message. The media is also the most important part of supporting the tourism sector. Especially in the cultural tourism sector that we are familiar with cultural heritage or historical heritage. one of them is the Rumah Gadang Istano Basa as a historical heritage of West Sumatra. The map that is part of the sign system is certainly very needed for visitors. A flat design that is appealing in a way that will certainly help increase the interest of visitors, especially this makes it easier to share information through digital technology such as smartphones. This map design method will adapt to the Waterfall design method created by Pahl and Beitz. In the design process, it will go through the requirements analysis, design, implementation, integration testing and ending with maintenance. Of course, the design of maps that use this digital application must follow a structured stage of the Waterfall method. Then, the design which becomes an important point in this design is the concept of infographics that is clear and has the power in readability.
Strengthening character education with the implementation of machine learning in the millennial era industrial revolution 4.0
Authors: Ilhami Arsyah Ulya , Husna Arsyah Rahmatul , Pratiwi Mutiana , Lestari Novia
Published: December 2019

Education is a part that cannot be separated from human life. There is a relationship between education and prosperity and patterns of human life. In the context of human life, education has a significant role in aspects of social, economic, environmental, political and security safeguards. In terms of welfare, education has a large influence. One education actor who plays a very important role is the teacher, who will teach and become an example for his students. And things that should not be eroded by the development of the age are the cultivation of good character in educating students, including those that must be prevented are acts of violence against students maybe it can happen in the world of education, either by the teacher or fellow students. In this study a web-based Expert System will be designed using the Forward Chaining method. Forward Chaining is a search method or a forward tracking technique with information and merging rules to produce conclusions. With this system the teachers can conduct online consultations that will be applied in machine learning in the learning process, so that the teachers can find out whether their actions in the teaching and learning process are in accordance with the ethics of an educator.
Expert System and Rule-Based Knowledge Based in Analyzing Vitamin Deficiency in the Human Body
Authors: Hartika Zain Ruri , Rahmawati Elmi
Published: December 2019

Along with the development of information technology, which has made use of artificial intelligence technology including expert systems. Where the Expert System contains the knowledge and experience and expertise of a person entered by one or many experts into a particular knowledge area so that everyone can use it to solve specific problems, in this case it is a problem in analyzing vitamin deficiencies in the human body. Without vitamins, humans will not be able to carry out living activities and lack of vitamins can cause an increase in the chances of getting disease in our body. With the existence of an expert system, it will be able to analyze the symptoms of vitamin deficiencies in the human body so that they are dealt with effectively and efficiently.
University Student Satisfaction Analysis on Academic Services by Using Decision Tree C4.5 Algorithm (Case Study : Universitas Putra Indonesia “YPTK” Padang)
Authors: Aldi Febri , Ade Rahma Anita
Published: December 2019

Satisfaction is a dynamic process which can affect many things. Satisfaction can be achieved from many aspects. In higher education, student as a main customer and consumer of the university which has big role in growth of the university needs to be satisfied. Student satisfaction will have an impact to the sustainibility of the university. Where satisfaction generally gotten from the services given by the university. This research focus on academic services by the university. Attributes of service quality such as tangibles, reliability, responsiveness, assurance, empathy and information system (as a new additional attribute which is rarely analyzed) are used to measure student satisfaction level. Data has been collected by distributing questionnaires to 100 UPI YPTK Padang students and then processed with decision tree c4.5 algorithm. The result revealed 82 students were satisfied and the remaining 18 students were dissatisfied. Moreover, 95% accuracy algorithm is obtained and categorized as very good classification.
Model of Artificial Neural Networks in Predictions of Corn Productivity in an Effort to Overcome Imports in Indonesia
Authors: Wanto Anjar , Hartama Dedy , Widi Bhawika Gita , Chikmawati Zulifah , Sukrisna Hutauruk Deswidya , Hotria Siregar Pinondang , Fredrik Marpaung Ricard , Efendi Salim , Gultom Imeldawaty , Perdana Windarto Agus
Published: December 2019

Indonesian people still consume a lot of corn as a staple food. Corn productivity based on data from the Indonesian Central Bureau of Statistics from 2005 to 2015 is not stable. Therefore this study was conducted to determine the right prediction model to see the level of corn productivity in Indonesia for the coming year, with the hope that the government has a reference to continue to work to improve corn productivity to remain stable in order to meet the needs and minimize corn imports. This study uses data on corn productivity in 2005-2015 sourced from the Indonesian Central Bureau of Statistics. The algorithm used to determine the prediction model is the Backpropagation artificial neural network. This algorithm is able to predict times series data. Based on this algorithm, the training and testing process is carried out using 5 network architecture models, namely 5-25-1, 5-43-1, 5-76-1, 5-78-1 and 7-128-1. The best architecture obtained from the 5 models is 5-25-1 with 88% accuracy percentage and MSE value 0, 00992433.
Exploring the Practice of Teacher-Students’ Classroom Interaction in Speaking Subject at Higher Education
Authors: Ngatmini  , Rustono  , Subyantoro  , Mulyani Mimi
Published: December 2019

This study aims at formulating the teaching and learning’s interactional patterns on speaking subjects in universities.This is qualitative study which applied a realistic ethnographic approach. The data were the lecturers and students’ speech fragments on learning and teaching speaking skills. The instruments were technically obtained from observation using video recording. The data sources were the lecturers and students’ speech fragment at four different specific higher education (HE), the data were further labelled as HE-1, HE-2, HE-4 and HE-3. The data analysis followed Miles and Huberman’s interactive models. The results showed that the teaching-learning interactional patterns of speaking subjects at four specific universities remains dominantly controlled by the lecturers. In the HE-1, the lecturers were found speaking more actively than students (TTT) whereas in HE-3 & HE-4, students were given more speaking opportunities (STT), where this has led affecting the students’ achievement and optimal learning objectives. The interactions were mainly occured at the time the students construct both their experience and knowledge with the received information. Lecturers at both universities have not been able to facilitate students to developing and expressing their ideas. Among the compared higher education of HE-1, HE-2, HE-3 & HE-4, the learning and teaching interactional patterns at the speaking subjects’ implementation were directed towards constructivism. Through generative learning strategy, there were found elements which reflect each step of the strategies, although at an early stage. It is necessary to develop varied learning models which engage students’ active participation. In addition, there should be an understanding towards the concept of students’ classroom interactional competence.
Active learning in scientific writing skill using Indonesian textbook based on character education
Authors: Slamet St. Y. , Winarni R , Hartono
Published: December 2019

The purpose of this study was to describe development of text-based and character-based Indonesian textbook model. The method was research and development which consists of four stages, they are: (1) Exploration, (2) Model Development, (3) Model Testing, and (4) Disemination. The research approach in the exploration stage was qualitative descriptive approach. Data collection was done through in-depth interviews, observation, documentation, and questionnaires. Data analysis technique was done by interactive analysis model. Experimental research was done in the model testing stage. The results of this study: (1) exploration stage showed that the Indonesian textbooks used in UNS, UMS, and UNISRI Surakarta, have not been in accordance with the needs of students and lecturers, (2) model development stage produced a character-based scientific writing textbook through preliminary field testing; and (3) the effectiveness testing showed that the value of t obtained was 0.17 which then compared with the value of t table (with N = 90, α = 0.05) pointing 1.64. Thus, the t-obtained (0.17) > t-table (1.64), the hypothesis was accepted (Ho was rejected) and the textbook was stated significant. This means that the text-based and character-based Indonesian textbook was effective to improve scientific writing skills.
Lexical and Grammatical Cohesions in the Students’ Essay Writing as the English Productive skills
Authors: Tenri Ampa Andi , Muhammad Basri D
Published: December 2019

For the purpose of achieving a good essay writing, the students need to have capability to use the lexical and grammatical cohesions. This research aimed to describe the lexical and grammatical cohesions used by the students in writing essays at Makassar Muhammadiyah University. The research samples consisted of 91 students’ esssays from the English Education Department of FKIP Unismuh Makassar. The research used a writing test as an instrument to collect data. To achieve the aim of the research, a mixed method was used to describe the results of data analysis quatitatively and qualitatively. The results of the research revealed the use of lexical cohesion which included the use of repetition, synonym, hyponym, antonym, meronym, general noun, and collocation. From the seven kinds of lexical cohesion used by the students in writing essays, the general noun was mostly used by the students. Futhermore, grammatical cohesion revealed the use of reference, substitution, ellipsis, and conjunction. Among them, the reference as a cohesion mark was mostly used by the students. The implication of the research results might be used significantly as the base for developing learning materials in teaching writing as one of the English productive skills.
The Reseptive and Productive Learning Models Based on Folktales for Learning Indonesian as a Foreign Language
Authors: Wardani NE , Ulya C
Published: December 2019

This research is intended to describe and explain reseptive and productive learning models based on folktales for Learning Indonesian as a Foreign Language (Bahasa Indonesia untuk Penutur Asing/BIPA). The research method used here is the qualitative descriptive method, using the content analysis technique. Data was collected from observation implementation of learning with the reseptive and productive models in the class, Indonesian students as a Foreign Language, and documents. The validity of data was verified through the triangulation method. Data analysis used the interactive analysis technique pioneered by Miles and Hubermann. The research results indicate that the appropriate learning model for introducing folktales to Learning Indonesian as a Foreign Language students is the receptive and productive models, which can be applied to improve the four language skills. The four language skills include listening, reading, speaking, and writing. The receptive learning model consists of the interest stage, enjoyment stage, and response stage. The productive learning model consists of writing stories, writing simple drama script, and roleplaying. This learning model consists of several methods through which foreign students can learn Indonesian actively, creatively, and enjoyably.
Towards Data-driven Education with Learning Analytics for Educator 4.0
Authors: Mokhtar Salimah , Alshboul Jawad A. Q. , Shahin Ghassan O. A.
Published: December 2019

Learning analytics has not been extensively used yet as necessary tools in the management and operation of public universities in Malaysia. Massive amount of data been created and collected on students at the faculty but mostly remain dark and unexplored. Generating many reports, having lots of alerts or dashboards does not make a faculty data-driven. To be smart, a faculty must utilize technology to enable and support better planning and decision-making, and to be data-driven, a faculty must have analytics to drive actions for value. This paper intends to explore the impact of IR 4.0 in the field of education and research into the possibility on how a university or a faculty can adapt to IR 4.0 and function in the big data environment. It will present the concept of Education 4.0, data-driven education and learning analytics. To transform, universities must rethink the current teaching practices and then redesign learning to suit future demand. This is discuss next. Finally, it summarizes the roles that educators 4.0 should play in Education 4.0.
How online media and technology innovation influence consumer’s purchase intention
Authors: Rizki Mulyani Sitti , Widian Sari Marta , Nila Sari Vivi , Navia Rani Larissa , Syahrullah Ekajaya Darma
Published: December 2019

This research experiment is to know how online media and technology innovation influence consumer’s purchase intention. The sample of this research were the students of UPI “yptk” Padang who followed the @ Indonesia.Jersey Instagram. There were 100 respondents. The result of the research had the positive and significant influence of online media and technology innovation toward the consumer’s purchase intention. This research has contributed to increase sales with online marketing.
Exploring interaction’s quality attributes at Mobile Government services
Authors: Jaafar Mohamed Abdulla , Khalit Bin Othman Mohd , Binti Hamid Suraya , Hussein Zolait Ali , Ahmad Kassim Norliya binti
Published: December 2019

Popularity of smart devices among people leads organizations from different sectors to extend the channels of service delivery to maximize total beneficiaries. Mobile Government is one of these extended channels that use nowadays by government sector to allow end users performing the transactions with less time and efforts. Main features of mobile government services are the mobility which enables the public to perform their transactions online at anywhere and anytime. Dealing with smart devices for online services has limitations that need to be considering by the service provider to be sure that the delivered services meet the end users’ perspective. To measure satisfaction of m-government services, it required a compatible measurement scale that fits with the environment of such services. Using other S.Q. measurement’s scale (i.e., e-commerce, e-services, e-government) at the context of m-government leads to difficulties analysis of the service delivery process and inaccurate results. However, there’s a lack of service quality framework at the context of mGovernment services which is important nowadays to construct a compatible and suitable service quality measurement’s scale that must contain quality attributes that reflecting the environment of m-government. From this point, it encourages the researchers at the current paper to analyze the concept of mGovernment S.Q. with particular focusing on “interaction” attribute. This study uses a systematic literature reviews in the related fields of electronic S.Q., human-computer interactions, and mobile government services, which guided the researcher to identify the related sub-dimensions of interaction. Study finds that the sub-dimensions of interactions’ quality are: 1) User control, 2) Synchronicity, 3) Two-way communication, and 4) Responsiveness.
The utilization of learning analytics to develop student engagement model in learning management system
Authors: Nizam Ismail Shahrul , Hamid Suraya , Chiroma Haruna
Published: December 2019

Learning Analytics (LA) is evolving learning into a new era of analyzing student’s participation and engagement in order to gain some insights. The implementation of LA in a university helps the administration and faculty associates to observe the progress of the students alongside their rate of success. The purpose of this study is to develop a student’s engagement model for holistic involvement in the Learning Management System (LMS). The model was developed from an initial model that was derived from the review of literature and existing model of engagement in LMS. The data were collected from the online learning management system of one public University in Malaysia. From the data analysis, it was found that the strong engagement and interaction between the students, lecturers and the content in LMS, led to boost up the usage of the LMS as long as the student participation in the learning environment is accepted, which in return prepared the students to be evaluated anytime. The model that will be developed from this study can help increase the interaction and engagement between lecturers and students in LMS. Unlike the engagement of students in higher education LMS, which has been discussed already in the literature, this research integrated the role of trace data in shaping the learning environment communication and participation of the users.
Digital medical data protection compliance among medical staffs
Authors: Pratimaratri Uning , Ilona Desi , Zaitul
Published: December 2019

The data protection compliance has been discussing among multidiscipline academician and practitioners. However, there is a lack of prior study conducting in Indonesia’s environment. Therefore, this study has a research objective of investigating the effect of perceived ease of use and perceived usefulness on attitude toward data protection policy among medical staff in west Sumatra, Indonesia. Besides, this study also seeks to determine the relationship between attitude toward data protection policy and data protection compliance. Data is gathered through survey and analysed using the SEM-PLS. Smart-Pls is applied by considering the assessment of measurement and structural model. The result shows that there is a positive significant relationship between perceived usefulness and attitude toward data protection policy. This study documents a positive association between attitude toward data protection and data protection compliance. Practically, this study implies that to increase the compliance behaviour among medical staffs, the institution has to increase the attitude toward data protection policy and perceived usefulness. Theoretically, this study contributes to the technology acceptance model.
A Comparative Review of ISMS Implementation Based on ISO 27000 Series in Organizations of Different Business Sectors
Authors: Hamdi Zaidatulnajla , Anir Norman Azah , Nuha Abdul Molok Nurul , Hassandoust Farkhondeh
Published: December 2019

Organizations have different takes on Information Security Management Systems (ISMS) since security measurements vary according to their business relevance. One way to assure ISMS is being well-implemented is by having a standard compliance such as the ISO 27000 series. The ISO 27000 series is a family of standards that provides a framework for best practice ISMS that helps organizations keep their information assets secure. This paper intends to seek how organizations in different business sectors implement ISMS in their practices. By identifying which organization attains a higher number of ISO requirements, it is anticipated that the characteristics that increase the chances of an organization being certified can be distinguished. This paper reviews case studies regarding the ISMS implementation based on ISO 27000 series between organizations in different business sectors. The result of this paper presents the state of ISO compliance of the organizations. The findings also discussed the characteristics of organizations that are applicable for certification. Through the findings, it is found that the organization, which fulfilled the highest number of ISO requirement, has a stronger possibility of being certified. However, ISO standards should be more dynamic to support diverse business environment thus avoiding generalization to get compliance.
The understanding of lecturers about the new literacy in industrial revolution era 4.0: a study case of university of putra indonesia yptk padang
Authors: Dewi Muharika , Retno Sari Yulia , Amna Shally , Rasmita  , Susanti Rina
Published: December 2019

The paper discusses how the understanding of lecturers at University of Putra Indonesia YPTK Padang is related to the new literacy in the Industrial revolution Era 4.0 which is big data literacy, technology literacy, and humanity literacy which have recently been a basis in developing learning in universities and which help to accommodate graduates to be able to compete in the era of globalization. This research is done by qualitative approach, the sample is 35 university of Putra Indonesia lecturers in multi-disciplines. Triangulation is used to collect the data through interview, observation and documentation. Data are analyzed using the procedures proposed by Creswell. The finding explains that the lecturers’ understanding of the new literacy in Industrial revolution era 4.0 are generally low; those are in understanding of big data taxonomy analysis, enough understanding and application of technology taxonomy analysis, and has applied humanity literacy only limited to train critical thinking, creativity, collaboration, and communication yet inapplicable and less focus on enhancing competitive skills in the era of globalization. The research suggests the lecturers to do improvement independently and through campus support. They also need to be more applicable in implementing new literacy in the era of industrial revolution 4.0.
Standard operational procedure fund distribution system of zakat infaq and shodaqoh for zakat foundations
Authors: Handriani Inge , Priambodo Bagus , Hazidar Al Hamidy , Masril Mardhiah , Pratama Putra Zico , Kudr Nseaf Asama , Naf’an Emil
Published: December 2019

The management of zakat, infaq and shodaqoh funds is a very crucial activity for each zakat institution, in which two processes are carried out, namely the receipt and distribution of zakat infaq and shodaqoh. This article is the result of further research on the zakat receipt system that was previously published. This fund distribution system is the responsibility of all receipts of funds received so it is very crucial even compared to the ZIS acceptance system itself. This is because there is accountability for the receipt of funds received by the institution and must be submitted to certain parties in accordance with the provisions of Islamic Sharia. Problems that often occur in the process of fund distributing zakat, infaq shodaqoh is a entry data that accountability reports can not be made, the accountability report also can be made, besides that there is also an inaccurate target of the intended recipient distribution object. So that it is necessary to regulate how the right procedures in funds distributing of zakat infaq shodaqoh. The analytical method used by PIECES (Performances, Information, Economics, Control, Efficiency, Services). The standard operating procedure in the ZIS fund distribution system is made with internal control parameters (COSO).
Learning vocabularies using multimedia-based Teaching Indonesian to Speakers of Other Languages (TISOL)
Authors: Saddhono K , Suhartatik  , Bagiya  , Widodo  , Wahyono H
Published: December 2019

This research aims (1) to develop Indoesian vocabulary learning multimedia in TISOL Program for foreign students, (2) to reveal the quality of learning media viewed from content, learning, appearance, and programming aspects, (3) to know foreign students’ learning mastery after learning Indonesian vocabularies with using multimedia. It was a developmental research. Research validators were an expert in TISOL and an expert in learning multimedia. Research subjects consist of five foreign students tested one by one, and twenty-five students tested in a huge group. Research insturments were questionnaire, observation, and questions for pre-test and post-test. Data were analyzed by using the descriptive statistics technique. The results show the followings. (1) The development of Indonesian vocabulary learning multimedia is TISOL program with six stages, namely analyzing, designing, producing, validating, revising, and testing. (2) The quality of developed learning multimedia from content, learning, appearance, and programming aspects is good. With using a scale from 1-5 score, the content aspect shows an average score of 3.75, learning aspect indicates average score of 3.71, appearance aspect deals with an average score of 3.87, and programming aspect reflects an average score of 3.75. (3) Interest aspect shows that developed learning multimedia is very interesting as demonstrated in one-by-one test, in which from three students observed, two of them respond that the product is very interesting, but one claims that the the product is interesting; while developed learning multimedia gets different responds in a huge group test, in which from twenty students, tweleve students state that the product is very interesting and the rest state that the product is interesting. (4) The use of Indonesian vocabulary learning multimedia in TISOL program gives a good impact to students’ learning mastery. In a huge group test, there are 19 students (95%) who master Indonesian vocabularies in tisol program.
Teacher competence in utilizing digital media literacy in education
Authors: Ramadhan S , Sukma E , Indriyani V
Published: December 2019

This study aims to determine the responses and competencies of teachers in digital media literacy. This research is a descriptive study using survey methods. The study sample was 112 Indonesian language teachers in West Sumatra. The instrument of this study used a questionnaire. The results of the study show that most teachers have used digital media to assist in the learning process. However, the digital media used is still limited and not yet diverse. The use of digital media in learning has positive and negative effects. In order for maximum positive effects to be obtained and negative effects to be avoided, teacher competence is needed to make it happen. Based on the results of this study it is recommended that teachers can keep up with the times by utilizing digital media in learning, both to obtain material so that the use of learning media, or support the learning methods used.