bluuebunny/crossref_metadata_2025 huggingface dataset:
Sodium decorated net-Y nanosheet for hydrogen storage and adsorption mechanism: A first-principles study*
Authors: Wang Yunlei , Chen Yuhong , Wang Yunhui
Published: November 2019

Using first-principles calculations based on density functional theory (DFT), we investigate the potential hydrogen storage capacity of the Na-decorated net-Y single layer nanosheet. For double-side Na decoration, the average binding energy is 1.54 eV, which is much larger than the cohesive energy of 1.13 eV for bulk Na. A maximum of four H2 molecules can be adsorbed around each Na with average adsorption energies of 0.25–0.32 eV/H2. Also, H2 storage gravimetric of 8.85 wt% is obtained, and this meets the U.S. Department of Energy (DOE) ultimate target. These results are instrumental in seeking a promising hydrogen energy carrier.
Fault tolerant controlled quantum dialogue against collective noise*
Authors: Chang Li-Wei , Zhang Yu-Qing , Tian Xiao-Xiong , Qian Yu-Hua , Zheng Shi-Hui
Published: November 2019

Quantum system is inevitably affected by the external environment in the real world. Two controlled quantum dialogue protocols are put forward based on logical χ-type states under collective noise environment. One is against collective-dephasing noise, while the other is against collective-rotation noise. Compared with existing protocols, there exist several outstanding advantages in our proposed protocols: Firstly, the χ-type state is utilized as quantum channels, it possesses better entanglement properties than GHZ state, W state as well as cluster state, which make it difficult to be destroyed by local operations. Secondly, two kinds of logical χ-type states are constructed by us in theory, which can be perfectly immune to the effects of collective noise. Thirdly, the controller can be offline after quantum distribution and permission announcement, without waiting for all the participants to complete the information coding. Fourthly, the security analysis illuminates that our protocols can not only be free from the information leakage, but also resist against the intercept-and-resend attack, the entanglement-and-measure attack, the modification attack, the conspiring attack, and especially the dishonest controller’s attacks.
Analyzing floor-stair merging flow based on experiments and simulation*
Authors: Zhu Yu , Chen Tao , Ding Ning , Fan Wei-Cheng
Published: November 2019

In most situations, staircase is the only egress to evacuate from high-rise buildings. The merging flow on the stair landing has a great influence on the evacuation efficiency. In this paper, we develop an improved cellular automaton model to describe the merging behavior, and the model is validated by a series of real experiments. It is found that the flow rate of simulation results is similar to the drills, which means that the improved model is reasonable and can be used to describe the merging behavior on stairs. Furthermore, some scenarios with different door locations and building floor numbers are simulated by the model. The results show that (i) the best door location is next to the upward staircase; (ii) the total evacuation time and the building floor number are linearly related to each other; (iii) the pedestrians on upper floors have a negative influence on the evacuation flow rate.
Heart-Centered Management Training Program for Public Secondary School Principals in the Island of Panay, Philippines
Authors: Jimlan Ju-im T.
Published: November 2019

This study investigated the relationship among the levels of emotional intelligence, conflict management styles, and transformational leadership skills of 201 public secondary school principals in the Island of Panay. The primary purpose of the study was to develop a "Heart-Centered Management Training Program" to improve the performance of school principals through enhanced use of emotional intelligence, conflict management styles, and transformational leadership skills. It determined the significant differences and relationship among these variables when the respondents were classified regarding their educational attainment, geographical location, Result – Based Performance Management System (RPMS) rating, professionalism, religion, and sexual orientation. Significant differences were observed in their level of emotional intelligence, conflict management styles, and transformational leadership skills when they were grouped according to RPMS rating, professionalism, religion, and sexual orientation, respectively. There were significant relationships between emotional intelligence and conflict management style; emotional intelligence and transformational leadership skills; and conflict management styles and transformational leadership skills. These findings were the bases of the "Heart-Centered Management Training Program."
Choose your Patty: The Sensory Characterization and Consumer Acceptance of Burger Patties with Oyster Mushroom (Pleurotus ostreatus) Enrichment
Authors: Tabaldo-Tucar Merlinda , Solar Mr. Nick John B.
Published: November 2019

This experimental study aimed to determine the acceptable proportion of burger patty enriched with 25 g(Proportion A), 50 g (Proportion B) and 75 g (Proportion C) of oyster mushroom in terms of appearance, aroma, taste and texture. The level of acceptability as to appearance, aroma, taste and texture were also evaluated. The sensory characteristics were evaluated by 30 selected evaluators using a sensory evaluation sheet based in Five-point hedonic scale.

Frequency count and percentage were used as statistical tools to determine the sensory characteristics of burger patty enriched with oyster mushroom. While, arithmetic mean was used to determine the level of acceptability of burger patty.

Findings revealed that Proportion A has a very much pleasant oyster mushroom taste. On the other hand, Proportion B had a very much pleasant oyster mushroom smell and very much compact and fine texture. Lastly, Proportion C had a golden brown appearance and very much pleasant oyster mushroom smell.
Science Learning Integrated Ethnoscience to Increase Scientific Literacy and Scientific Character
Authors: Atmojo Setyo Eko , Kurniawati Wahyu , Muhtarom Taufik
Published: November 2019

This study aims to improve the scientific literacy and scientific character of students of prospective primary school teachers through science learning integrated ethnoscience science. This research is an experimental study for students in class A1 and A2 of the PGSD UPY study program. Class A1 is an experimental class that implements science learning integrated ethnoscience and class A2 as a control that implements conventional learning. This type of research data consists of scientific literacy data and student scientific characters. Scientific literacy data was collected using tests and analyzed using N-gain, while scientific character data were collected using observation sheets and analyzed by descriptive percentages. The results of the study show that science learning integrated ethnoscience can improve students’ scientific literacy with a gain score of 0.81 which is included in the high category. The average score of students’ scientific character in science learning integrated ethnoscience is in the high category, where the average score of scientific characters in each aspect at each meeting is > 70%.
LNU Pre-service Secondary Science Teachers’ Scientific Literacy and Science Teaching Self-Efficacy
Authors: Flores Jefferson E.
Published: November 2019

The main purpose of this study is to determine Leyte Normal University’s pre-service secondary science teacher’s scientific literacy and science teaching self-efficacy. Further, the relationship between scientific literacy and science teaching self-efficacy is explored. Participants were 50 fourth-year students enrolled in the BSEd Biological Science program. The survey method was used in this study. The participants’ science teaching self-efficacy was determined by Science Teaching Efficacy Belief Instrument (STEBI-B) developed by Enochs and Riggs (1990), while scientific literacy was measured by Test of Basic Scientific Literacy (TBSL). The results showed that the pre-service teachers’ science teaching self-efficacy is at the medium level. Further, participants had satisfactory scientific literacy levels. The Pearson product–moment correlation revealed a moderately positive relationship between scientific literacy and science teaching self-efficacy.
Constructively Aligned Teaching Sequence (CATS): A Tool For Teaching Organismal Biology In STEM Senior High School Education
Authors: Magtolis Joyce M. , Batomalaque Antonio E.
Published: November 2019

This paper presents the developed and evaluated innovation, the Constructively Aligned Teaching Sequence (CATS). This teaching sequence is a K to 12 compliant that may be used in teaching the topic on human organ systems to Senior High School students. The CATS’ prototype was constructed and tested in authentic school context. The development was done using the design principles embodied in the model of educational reconstruction proposed by Duit et.al. (2005). The evaluation was conducted by looking into the students learning outcomes and teachers’ evaluation. The research instruments included students’ pre-assessment/post-assessment drawing, pretest/posttest, questionnaire, and recorded unstructured interviews. Quantitative and qualitative data corroborates that use of CATS contributed to the attainment of the students’ learning outcomes. In conclusion, future prototypes may be developed to address more strongly students’ alternative conceptions through the applied design principles or add new design principles. Findings showed that CATS may be redesigned to further strengthen the correct conceptions, enhance limited conceptions and remediate conceptions in conflict with the accepted biological concepts. Furthermore, this study provides an avenue for further research on its improvement such as construction, usage, handling, and storage of the student outputs.
Early Childhood Character Building Troughtechnological Education
Authors: Saptatiningsih Rosalia Indriyati , Permana Septian Aji
Published: November 2019

The purpose of this research was to identify the pattern of character education in St. JosephKindergarten and it was to analyze the application of character education developed by St. JosephKindergarten for early childhood in the family. This research used a qualitative approach. The informants in this research were teachers, parents, and students of St. JosephKindergarten. Data collection techniques carried out by participant observation and in-depth interview. The collected data analyzed using domain analysis, taxonomy, compound, and cultural themes. The result showed that early childhood character education could be formed through school and family collaboration conducted in kindergarten. It can be known through St. Joseph Kindergarten education program that implements the curriculum with technological developments and it can be seen thatchildren inseparable from technology. Character values developed by St. The implementation values was done through routine habituation that applied as long as the children in St. Joseph Kindergarten unit by introducing technology education so that children did not abusing the technology. Fun learning activities management by utilizing student technology can be more creative and participatory. Character building application through Play Store learning can educate students to be wiser in using Gadget applications in modern era.
Mobile Web-Based Information System for thesis’s Administration in University PGRI Yogyakarta
Authors: Tentua Meilany Nonsi , Fairuzabadi M. , Sumarmi Saptaningsih
Published: November 2019

This research aims to develop an Information System thesis’s administration that efficient and effective supported by computerized administration system or on-line system. The subject of this research is Universitas PGRI Yogyakarta which have 13 study programs. Mobile web can use in the thesis’s administration system. It can facilitate the management of required letters and essay recap. This system can also browse the titles of the thesis that has been created so as to reduce duplicate titles of the thesis.

This study concludes that the use of thesis administrative systems can facilitate and accelerate the management of the required letters. It also can sorting titles of the essay that has been taken so as to avoid duplication. Based on black box testing, it is found that the whole function has been run well, the functions tested include: (1) User Verification (2) Data Management (3) Information and reporting. 3) Based on the alpha test it can be seen that the system developed in usability is considered good, the assessment aspect includes: ease of use, ease of navigation, access speed, completeness of features and attractive appearance.
Design of Student Attendance System Using Internet of Things (IoT) Technology
Authors: Santoso Banu , Sari Marti Widya
Published: November 2019

Lecture attendance data at universities is a reference in showing the credibility of each student used by lecturers as data for student grades as well as an evaluation material for the success of teaching and learning activities in lectures, but there are several examples of cases related to student attendance data currently prevalent in the world of education or lectures is the phenomenon of "Leave Absence" or better known as TA. In addition, other problems also arise from lecturers and administrative staff, namely difficulties in monitoring student attendance and efforts to validate attendance data because of the large amount of student data. Therefore in this study a system was proposed to reduce the level of fraud in filling the attendance list and effectiveness of student data processing using a system of applying the concept of the Internet of Things (IoT) with the fingerprint presence method. Existing system modeling results are expected to be able to support the service of processing academic data automatically and produce accurate and accurate statistical data and be able to reduce data manipulation factors from irresponsible parties.
Generating Fuzzy Interval Data and Its Application to Find The Relation Between Math Anxiety with Self Efficacy Using Correlations Analysis
Authors: Susanto H P , Sutarti T , Hafidah A S
Published: November 2019

In this article, adding a dimension that has not yet been explored in published literature, we investigate the process of generating fuzzy interval data using a crisp data, applying the process to the students’ anxiety and self-efficacy crisp data in learning mathematics, and determining the two variable correlations using Cheng and Yang fuzzy correlations. We take Fuzzy correlation developed by Cheng and Yang because of being easy to understand, and its development adopts the formula of Pearson correlation. The data used are fuzzy interval data and trapezoid fuzzy. In this case, the crisp data taken using traditional questionnaires cannot be employed. The findings of this research reveal that (1) the crisp data fuzzification process to be interval fuzzy provides a new alternative in obtaining fuzzy interval data; (2) fuzzy correlations using fuzzification results provide the conception that the anxiety has a negative correlation at a moderate effect level. The correlation coefficient shows the same conclusions with Pearson correlation and fuzzy correlation using original fuzzy data obtained from data collection.
A Brief Review on Particle Acceleration in Multi-island Magnetic Reconnection
Authors: Che H. , Zank G. P.
Published: November 2019

The basic physics and recent progresses in theoretical and particle-in-cell (PIC) simulation studies of particle acceleration in multi-island magnetic reconnection are briefly reviewed. Particle acceleration in multi-island magnetic reconnection is considered a plausible mechanism for the acceleration of energetic particles in solar flares and the solar wind. Theoretical studies have demonstrated that such a mechanism can produce the observed power- law energy distribution of energetic particles if the particle motion is sufficiently randomized in the reconnection event. However, PIC simulations seem to suggest that the first-order Fermi acceleration mechanism is unable to produce a power-law particle energy distribution function in mildly relativistic multi-island magnetic reconnections. On the other hand, while simulations of highly relativistic reconnections appear to be able to produce a power-law energy spectra, the spectral indices obtained are generally harder than the soft power-law spectra with indices ~ − 5 commonly observed in the solar wind and solar flare events. In addition, the plasma heating due to kinetic instabilities in 3D magnetic reconnection may “thermalize” the power-law particles, making it even more difficult for multi-island reconnections to generate a power-law spectrum. We discuss the possible reasons that may lead to these problems.
Time-Dependent Perpendicular Transport of Energetic Particles
Authors: Shalchi A.
Published: November 2019

The motion of energetic particles in magnetic turbulence across a mean magnetic field can be explored analytically. The approach discussed in this paper allows for a full time- dependent description of the transport, including compound sub-diffusion. For the first time it is shown systematically that as soon as there is transverse structure of the turbulence, diffusion is restored even if no Coulomb collisions are invoked. Compared to other non-linear theories the new approach has the advantage that a diffusion approximation is no longer part of that theory. Criteria for sub-diffusion and normal Markovian diffusion are provided as well. A comparison with test-particle simulations is also discussed.
Spreading protons in the heliosphere: a note on cross-field diffusion effects
Authors: Wijsen N. , Aran A. , Pomoell J. , Poedts S.
Published: November 2019

We study how a high-speed solar wind stream embedded in a slow solar wind affects the transport and energy changes of solar energetic protons in interplanetary space, assuming different levels of cross-field diffusion. This is done using a particle transport model that computes directional particle intensities and first order parallel anisotropies in a background solar wind generated by the magnetohydrodynamic model EUHFORIA. In particular, we consider a mono-energetic 4 MeV proton injection over an extended region located at a heliographic radial distance of 0.1 AU. By using different values for the perpendicular proton mean free path, we study how cross-field diffusion may affect the energetic particle spread and intensity profiles near a high-speed solar wind stream and a corotating interaction region (CIR). We find that both a strong cross-field diffusion and a solar wind rarefaction region are capable of dispersing SEPs efficiently, producing overall low particle intensities which can in some cases prevent the SEPs from being detected in-situ, since their intensity may drop below the detected preevent intensity levels. We also discuss how accelerated particle populations form on the reverse and forward shock waves, separated by the stream interface inside the CIR. Under strong levels of cross-field diffusion, particles cross the SI and hence both accelerated particle populations merge together.
Synchrotron spectra of GRB prompt emission and pulsar wind nebulae
Authors: Xu Siyao
Published: November 2019

Particle acceleration is a fundamental process in many high-energy astrophysical environments and determines the spectral features of their synchrotron emission. We have studied the adiabatic stochastic acceleration (ASA) of electrons arising from the basic dynamics of magnetohydrodynamic (MHD) turbulence and found that the ASA acts to efficiently harden the injected electron energy spectrum. The dominance of the ASA at low energies and the dominance of synchrotron cooling at high energies result in a broken power-law shape of both electron energy spectrum and photon synchrotron spectrum. Furthermore, we have applied the ASA to studying the synchrotron spectra of the prompt emission of gamma-ray bursts (GRBs) and pulsar wind nebulae (PWNe). The good agreement between our theories and observations confirms that the stochastic particle acceleration is indispensable in explaining their synchrotron emission.
The automated and unmanned inland vessel
Authors: Verberght E. , van Hassel E.
Published: November 2019

Automation is an ongoing development that has already changed the inland waterway transport sector (IWT) fundamentally. One of the next possible steps is the technology for fully automated operation systems under conditions and with the possibility for human intervention from on-shore. This article develops and explores a fully automated and unmanned inland vessel and questions if a positive business case for the IWT and society is possible. It also identifies the success and failure factors of this innovation. Two analyses were applied regarding barriers that could prevent market uptake (System of innovation approach, SIA), and the social costs and benefits of automation (Social Cost/Benefit Analysis, SCBA). The innovation has the potential to be disruptive in the entire supply chain as all transport modes are discovering their automation potential. The technology is assumed to have a possible impact on vessel safety, trip planning, fuel efficiency and even freight capacity. Also the institutional framework of the European IWT is taken in account regarding crew requirements and safety standards.
On Risk of Digital Twin Implementation in Marine Industry: Learning from Aviation Industry
Authors: Ibrion Michaela , Paltrinieri Nicola , Nejad Amir R.
Published: November 2019

This paper presents some aspects of the risk and challenges associated with digital twin implementation in the marine industry by learning from the aviation industry where the digital twin is more widely employed. The digital twin applications in aviation and marine industries are presented and the main steps of developing a digital twin are discussed. The three main steps of sensors (measurements), model, and data analysis are identified and used in the study. The lessons from two recent accidents in the aviation industry (Boeing 737 MAX crashes in Indonesia and Ethiopia in 2018 and 2019) are studied in details and discussed. It was found that the sensor reliability, model failure and wrong decisions as the output of the data processing are among the risks associated with digital twin implementations. In particular, from the case study accidents, it was found that the digital twin may not be able to represent all the possible scenarios which a system may experience in its life time. The digital twin presents many advantages, however the implementation of the digital twin is associated with risk and high uncertainties, even in the industries like the aviation industry, where the digital twin is well established and at a higher advanced level than in the marine industry.
Optimized use of Energy Charged from Shore in Plug-in Hybrid Marine Vessels
Authors: Mo Olve , Guidi Giuseppe
Published: November 2019

The paper presents a methodology for the design and tuning of real-time power and energy management systems for plug-in marine vessels. Main contributions are: (1) Method to design and tune the energy management strategy that will optimally share the load between on-board, fixed speed, diesel generator units and on-board energy storage, in such way that fuel consumption is minimized for a given expected load probability distribution (2) Method adaption for cases where the crew, for operational or safety reasons, decides to run with non-optimal number of diesel engines. (3) Outline of possible inclusion of adaptive tuning to cope with uncertain or unknown load probability distribution. The presented methodology applies to plug-in vessels where the battery storage cannot cover all energy needed for the planned trip, such that one need to combine the use of stored electrical energy from shore with the direct use of energy produced by on-board diesel generators. The proposed method uses the expected time of operation at each load level as key input for the optimization. Although getting such data upfront can be difficult, it is expected to be easier to get a good estimate of the load probability distribution rather than the exact load profile as function of time that is used by the existing methods.
Using the BIMCO Shipping KPI Database to identify costs and benefits of e-navigation solutions
Authors: Nesheim D A , Fjørtoft K E
Published: November 2019

In the RCN-funded research project SESAME Solution II, funded by the Norwegian Research Council under the MarOff programme, a key aspect is to develop a cost benefit assessment framework. This framework will be used to assess the solutions related to e-navigation and automatic reporting, to be developed by the project.

Some benefits are only visible on a larger or aggregated scale. This is particularly true for benefits which concern the reduction of unwanted incidents (e.g. accidents, deficiencies and detentions). Instead of focusing on case by case, historical trending on industrial or segment level provides a better picture of the actual benefit of certain solutions and measures. For this we need access to trustworthy sources. In the SESAME Solution II project, we have gained access to BIMCO’s Shipping KPI Standard database. BIMCO is the world’s largest international shipping association, with around 2100 members. Membership includes shipowners, operators, managers, brokers and agents. This database contains performance data related to ship management from 2011 with thousands of ships reporting KPIs (Key Performance Indicators on a quarterly basis. The database also allows for selections on the basis of ship type, trade, etc.

This paper explores the challenges and opportunities related to such use of statistics and aggregations when assessing the potential benefits (and costs) related to e-navigation and automatic reporting. Such challenges include the mapping of KPIs to the implementation of specific solutions/measures. As an example, aggregated KPIs may show the effect of certain IMO regulations such as the IMO DCS (Data Collection System: Monitoring, validating and reporting fuel consumption and CO2-emissions from international shipping). Other challenges include proving correlation as well as an overview of external factors which may skew the conclusions.

The suggested approach will prove adaptable to similar sources of data such as THETIS, APCIS and others.
Inference Model of Collision Risk Index based on Artificial Neural Network using Ship Near-Collision Data
Authors: Namgung Ho , Jeong Jung Sik , Kim Joo-sung , Kim Kwang-Il
Published: November 2019

The judgement of Collision Risk Index (CRI) is important for safe navigation. The autonomous ship need to analyze and decide taking an action for collision avoidance. Recently, it has been possible of navigator to obtain navigation information in real time. By using such collected navigation information, many researchers have proposed inference models which are based on the fuzzy theory in order that they can make decision for safety of navigation. The conventional inference model, however, have several limitations: (i) establish a membership function with Distance of the Closest Point of Approach (DCPA) and Time to the Closest Point of Approach (TCPA) without any considerations for other ship dynamic parameters; and (ii) rely on values of simulation result using virtual navigation information. In order to overcome these limitations, we introduces the inference model with Artificial Neural Network (ANN) by learning input vector, i.e., own ship’s speed, target ship’s speed, own ship’s course, target ship’s course, bearing between own ship and target ship, distance between own ship and target ship, and target vector. Taking an actual near-collision situation into account, the proposed model can express various CRI, keeping the desirable TCPA and distance to take a proper action for collision avoidance. The proposed method conducts better decision-making than conventional ones.
DBSCAN algorithm: twitter text clustering of trend topic pilkada pekanbaru
Authors: Mustakim  , Nurul Gayatri Indah Reza , Novita Rice , Kharisma Oktaf Brillian , Vebrianto Rian , Sanjaya Suwanto , Hasbullah  , Andriani Tuti , Sari Wardani Purnama , Novita Yulia , Rahim Robbi
Published: November 2019

Social media is one of the most common sources used to communicate, such as Twitter. Every tweet on Twitter contains data such as text which when collected can be processed into information. Data processed from Twitter tweet will create a trend which can be used for information such as in education, economics, politics, etc. This then created the concept of text mining. Text mining techniques are needed to find an interesting pattern in search of trends based on Twitter text with topics related to Pilkada Pekanbaru 2017. This research is intended to cluster Twitter text data using Density-Based Spatial Clustering of Application with Noise (DBSCAN) algorithm. This research was conducted with several experiments using different Eps and MinPts parameters for 2,184 text data which has been through several stages, such as cleaning, duplication removal, pre-processing like stemming and stopwords. Based on the highest average of Silhouette Index, Eps 0.1 and MinPts 10 with SI = 0.413 were chosen as paramaters, thus forming 31 clusters. According to the frequency of word occurrences in the cluster, the highest are “kpu”, followed by “firdaus”, “kota”, “pasang”, and “ayat”. As can be seen that the candidate pairs most often appear on cluster results are Firdaus-Ayat, and based on the results of Pilkada 2017, Firdaus-Ayat was chosen as Mayor and Vice Mayor of Pekanbaru.
Resistant starch content, pasting properties, and morphology of taro (Colocasia esculenta L. Schott) flour modified by heat-moisture treatment
Authors: Santoso Daniel , Wardana Ata Aditya , Surono Ingrid S.
Published: November 2019

Taro flour was modified by heat-moisture treatment (HMT) in various times and aimed to evaluate its resistant starch content, pasting properties, and morphology. The moisture content of taro flour was adjusted into 25% before heating at 110°C for 4, 6 and 8 h to produce modified flour. HMT of 8 h and 6 h exhibited the similar amount of resistant starch compared to native flour, while HMT of 4 h resulted in significantly lower RS content. The modification process increased all of pasting parameters: peak, trough, breakdown, final viscosity, setback, peak time, and pasting temperature. No sign of fractures were exhibited on the surface of native taro flour granules visualized in SEM micrograph. While modified taro flour resulted in some cracks which might be due to partially gelatinized around the surface by heat and moisture treatment.
Resistant starch content, pasting properties, and structure of modified taro (Colocasia esculenta L. Schott) starch granule by steam cooking
Authors: Wardana Ata Aditya , Surono Ingrid S. , Hendry
Published: November 2019

Effect of steam cooking (SC) on resistant starch (RS) content, pasting properties, and structure of modified taro starch granule was studied. Modified starch was prepared by two cycles of autoclaving followed by cooling at 4, and -20°C. The RS content was significantly higher (p < 0.05) after SC treatment as compared with native taro starch. All modified starches tend to be more stable to SC and heat- and shear-resistant of pasting characteristic which was confirmed by RVA viscograme. Moreover, the structure of modified taro starch granules showed remarkable different as compared to native as shown by the irregular and fracture of the structure.
Fracture Analysis of Uranium-Bearing Rock in Eko-Remaja Exploration Tunnel at Depth 50-200 Meters, Kalan, West Kalimantan
Authors: Muhammad Adi Gunawan , Saputra Roni Cahya , Syaeful Heri
Published: November 2019

Remaja Sector is one of the potential sectors of U mineralization at Kalan Area, West Kalimantan. Host rock of the mineralization is metasiltstone and schistosed metapelite. The 618 meters long Eko-Remaja Exploration Tunnel was built in 1980 to understand the character of uranium ore in this sector. The U mineralization in Kalan, West Kalimantan is influenced by the host rock type and fractures formed by regional tectonic. Regionally, ductile and brittle deformation occurs at Kalan. The ductile deformation observed from N 70o E fold plunging 30o NE that generate schistocity plane dipping 70-80o relatively to the north. First brittle deformation resulting open-mode fractures and schistocity planes that later filled by U-rich solution forming U veins, veinlets and breccia mineralization. Later, brittle deformation forming fractures that filled with calcite-gypsum solution afterwards, forming centimetric-desimetric vein and veinlet cutting the U vein. The purpose of this study is to determine the characteristics and main structure that control the U mineralization in the tunnel. The method is by collecting data of fracture such as joints and fault planes, schistosity planes (S1), and bedding plane (S0) together with its cross-cutting relationship at depth 50 - 200 meter from the tunnel mouth which at this interval representing the presence of mineralization in the Remaja Sector. The data then plotted and analyzed on upper hemisphere stereographic projection. Fracture analysis conducted to understand the families of fractures developed and the force direction resulting fractures the tunnel. From the analysis, the mineralization of U in the tunnel controlled by N 280o E fractures that relatively parallel to the schistocity plane as vein and breccia mineralization and analytical fold axis on Eko-Remaja Tunnel is N 73 E° / 30 tilted to E-NE. Joints in the tunnel mainly affected by faults that formed by couple force.
Burial History, Thermal Maturation, and Source Rock Evaluation of Ngimbang Formation in East Java Basin
Authors: Pradono Aditya , Rakasiwi Dadali
Published: November 2019

East Java Basin is the back-arc basin and it was the result of collision between the Indian Plate and Sunda Microplate. East Java Basin was formed in Early Tertiary subduction and it is related on the process in Java. In the exploration of Indonesian Basin over years, East Java is one of the successful hydrocarbon producers in Indonesia. In East Java Basin especially Rembang Zone, The Middle Eocene Ngimbang Formation is known as source rock materials. It consists of sandstone, siltstone, limestone, shale, and coal seams. The objective of this research is to determine the hydrocarbon source rock potential based on geochemical analyses and thermal maturation by making basin model. The main target source rock formation is Middle Eocene Ngimbang Formation. Log, seismic, and geochemical sample are the primary data in this research. These methods help the sense of exploring the new hydrocarbon potential. According to geochemical analyses, the source rock potential within TOC value in this area is good – very good. Fine sediments of Middle Eocene Ngimbang Formation tend to produce oil and gas originated from kerogen types II/III. Furthermore, the migration pathway started from south to north. Generation, migration, accumulation, and preservation occurred in Early Miocene.
Magmatic affinities and evolution of Mount Telaga Rano, Mount Sahu and Mount Onu, North Maluku: analyses of phenocrysts chemical composition
Authors: Arifa Adzkia Noerma , Sucipta I Gusti Bagus Eddy
Published: November 2019

Mount Talaga Rano, Mount Sahu and Mount Onu are volcanoes in Telaga Rano volcanic complex, North Maluku. Lava of Mount Telaga Rano showed andesitic composition with magmatic temperature of 920°C-1170°C, contains plagioclase (An36-85), enstatite, augite, pigeonite, magnetite, ulvospinel and olivine (Fo64-73) phenocrysts in the groundmass of microliths of plagioclase, volcanic glass, opaque minerals and pyroxene. Lava of Mount Sahu showed the andesitic and basaltic composition. The andesitic magma has temperature in the range between 946°C and 1007°C, whereas the basaltic magma has temperature in the range between 1192°C and 1330°C. The andesitic lava of Mount Sahu has plagioclase (An29-67), enstatite, augite, magnetite and ulvospinel phenocrysts in the groundmass of microliths of plagioclase, volcanic glass, opaque minerals and pyroxene, whereas the basaltic lava contains augite, pigeonite, plagioclase (An30-91), olivine (Fo56-77) and magnetite in the groundmass of microliths of plagioclase, volcanic glass pyroxene and opaque minerals. Moreover, lava of Mount Onu showed the andesite composition with magmatic temperature of 970°C-1090°C, contains plagioclase (An25-89), enstatite, a small amount of ferrosilite, augite, pigeonite, magnetite, ulvospinel and olivine (Fo51-72) phenocrysts in the groundmass of microliths of plagioclase, volcanic glass, opaque minerals and pyroxene. The chemical composition of olivine, pyroxene and plagioclase phenocrysts have been used to identify the magmatic affinities and evolution of those volcanoes. Clinopyroxene phenocrysts of the lavas show quadrilateral component variations which are characterized by low Cr, Al and Ti contents. The pyroxene data indicate that the magmas from those volcanoes have magmatic affinities with calc-alkaline to transitional series. Furthermore, we suspected that there was iron enrichment during the magma evolution. Based on the mineralogical identification of phenocrysts, magma evolution within each magma was controlled by fractional crystallization, associated with magma mixing. The more primitive magma injection greatly affected the composition of the magma and it could turn into more basaltic composition.
Diversity Of Benthic Foraminifera Of Core ‘A’ As A Marine Environment Indicator In The Waters Of Jepara, Central Java
Authors: Kusuma Dwi Nugraha Wira , Elfitra Dhanu , Lia  , Winantris  , Aswad Siti Mulia Nurul
Published: November 2019

The Research area is located on waters of Jepara, Central java. The sediment samples for this research were taken from core sample A with 65 cm lengths at coordinate of S 05°55’18.66” and E110°42’34.55”. There are 12 sediment samples used for this research with 5 cm of length interval for each sample. The objective of this research is to find out the environmental conditions around waters of Jepara based on the diversity index. Hydrogen peroxide method is used to process the sediment sample that contain foraminifera. Quantitative analysis of foraminifera was performed on 1gram dry sample. Results of Shannon-Wienner index to find the diversity ranges from 0.00282 to 0.01138. That result shows a low diversity index, it can be concluded that the conditions of the marine environment around waters of Jepara in the Core A has a low productivity, high ecological pressure, and has a disturbed ecosystem.
Geological Aspect and Hydrocarbon Potential in West Timor
Authors: Wahyudiono J , Novelyarisyanti N
Published: November 2019

Geological condition of the West Timor is originated from the Australian Continent Terrane, Banda Arc Terrane and local deposited rocks. The geology of the study area specifically is divided into Banda Terrane units, Australian Passive Margin Sequence, Gondwana Sequence, Post-Orogenic Sequence, Syn-Orogenic Sequences and Bobonaro Clay Complex. This study aims to analyze the geology and hydrocarbon potential includes the source rock, reservoir rock and seal rock in the West Timor area. The Oligocene-Miocene Mutis Complex beginning the collision between the Asian Continent and the Australian Continent. In this study, it was shown that the highest collision activity occurred at the end of the Miocene - Early Pliocene and continued to recent. Outcrop samples were collected and GC-MS analyses performed in the laboratory for source rocks. The result shows that the main source rocks found was shale of the Aitutu Formation (Triassic) and shale from the Wailuli Formation (Early Jurassic) with Ro>0.7, they are indicating mature souce rocks. The source rocks are thought to be generated in a shallow marine environment and low energy condition with a mixture of terrestrial material. Halobia fossil was found out on the outcrop, which is play as marker fossil of the Triassic age. A reservoir rock is the sandstone from Oebaat Formation. Oebaat Formation consists of interbedded grainstone-wackestone. Belemnite fossil was found on the outcrops, which is marker as a fossil from Jurassic age. The secondary reservoir is a limestone of the Nakfunu Formation (Lower Cretaceous). The reservoir is thought to be generated in a high-density turbidity condition in shallow marine environment. Shale from Wailuli Formation (Early Jurassic) can be a potential seal rock.
Geology Controls Grade Variance at Grasberg Cu-Au Porphyry Deposit, Papua-Indonesia
Authors: Sirait J , Prasetyo L C , Prasetiyo N
Published: November 2019

The Grasberg mining district is located in the core of the highlands of West New Guinea island, in the central ranges of the Papua Province of Indonesia. The collision between Australia Plate and Pacific Plate on Late Miocene generate NW-SE compressional structures orientation that produced reactivation of NE striking dilation to control the multiple series intrusion of host to Cu-Au porphyry deposit (Sapiie & Cloos, 2004). The oldest of Dalam Intrusion characterized by andesitic rock texture, phyllic to potassic alteration, low-moderate Cu-Au grade (0.25<EqCu<1). It is intruded by Main Grasberg Intrusion (MGI) with potassic alteration dominantly, quartz monzodioritic, high Cu-Au grade (EqCu>1). The latest Kali Intrusion characterized by propylitic to potassic alteration, quartz monzodioritic, dominant barren with EqCu is below the cut-of-grade (EqCu <0.25). The forecast block model is built in quarterly basis based on technical sampling assay method combination between diamond drill core and blasthole cutting samples. The actual grade model develop in daily basis following incremental blasthole cutting samples and be used for the ore reconciliation in monthly basis. The Cu-Au grade variance can be a loss and gain comparing to the forecast block model up to +/-30%. Focused on the negative variance or grade loss within pit radial sector 300°-330° at Dalam Intrusion and Southeast Kali host to phyllic-potassic alteration, and positive variance or grade gain observed dominantly along contact intrusion host to propylitic-potassic alteration. The veinlet relationships observed early vein bearing Cu-sulfide in NE direction intensively cut by SE and NS veins that filled by barren quartz-anhydrite±gypsum and quartz-sericite-pyrite as the latest hydrothermal fluid and affected on grade variance results. The spatial data distribution also influenced on grade variance model related to the alteration and mineralization style within the Grasberg Cu-Au porphyry deposit.
Application of Geostatistics for Cleat Data Validation in Sungai Lilin, Musi Banyuasin Region, South Sumatra
Authors: Jati Stevanus Nalendra , Idarwati  , Putra Ildo M. , Nursiwan FadlanAtmaja
Published: November 2019

Cleat on coal seam is a slope stability controller, as well as permeability and porosity for fluidal flows. It also has become an interesting issue on coal mining, nevertheless the finite quantitative data. As a matter of facts, there is actually some available data about cleat as attributes, but this study only objecting on the orientation, cleat spacing, and cleat aperture. Cleat attributes measurement through field observation at two coalfields;Baturona and PMC in the area of Sungai Lilin, MusiBanyuasin Region. Next, those 667 faces and butt cleats were measured from 8 scanlines being analyzed using geostatistic methods. The purpose of geostatisticanalysis in this study is to see the relation between variables (cleat attributes) to evaluate data quantitatively until the normal distribution is obtained. The data filter was done as a treatment until valid data is reached through the boxplot model. Early boxplot result that almost entirely had outliers data in each seam. In fact, it is commonly seen some extreme outlier data. This suggests that outlier data filter is treated as a treatment until a normal distribution system is achieved on each cleat attribute. Identification of cleat outliers has been affected by mining activity, or due to weathering processes in the coal seams that have been exposed.
Public services optimizing through the communication and information technology application of local governments as an effort to form environmentally friendly smart city branding
Authors: Nugraha Aat Ruchiat , Subekti Priyo , Romli Rosnandar , Novianti Evi
Published: November 2019

The dynamics and rapid development of technology growth become one of the reasons why the individual and organization conduct the behavior change in communicate either verbal and written. Communication behavior projection in the community will be more change rapidly along with instant digital technology. Therefore, nowadays the communication situation existence for an organization has become the spearheaded in fulfilling the public information services which demand openness, equality, and transparency in the process of organizational performance. As part of an organization and in fulfilling Smart City declaration, Bandung City government has conducted various breakthroughs that have been quite intense in the process of digitizing public services which environmentally friendly since 2012 in the era of Mayor Ridwan Kamil’s leadership for the community. The public service applications based on communication and information technology in Bandung City Government include Smart City and E-Government Applications such as e-Punten which are applications from the Department of Population and Civil Registration, Sabilulungan, Hayu!, and e-Remuneration Performance (e -RK). This public service application is an application that can significantly improve the level of government transparency in its performance. The research method is based on the analysis of information contained in the printed mass media of Pikiran Rakyat newspaper in 2017. The results show that digital communication is a method of communication and a commitment of the Bandung City Government in improving public services to be easy, fast and accountable for the community and related parties. Conclusions show that public services and the delivery of information developed through digital communication by the Bandung City Government become more integrated, monitored, effective, and efficient for the community.
Expert System to Diagnosing Heart Attack Disease Using Certainty Factor Method
Authors: Iqbal Muhammad , Fatia Nurul , Surya Sara , Susilawati Evi , Parwito  , Azharman Zefri , Moelyaningrum Anita Dewi , Wikansari Rinandita , Nugraha Andri , Maifizar Arfriani , Mukarromah Nur , Hasibuan Abdurrozzaq , Kurnia Dian Ade , Sudarsana I Ketut
Published: November 2019

Coronary Heart Disease is one of many diseases that cause death and still being a health problem for both developed and developing countries. It is estimated to double in the next two decades, making it the biggest leading cause of death in 2020. The causes of coronary heart disease contain age and sex, with the incidence of males is more than in females but the incidence of females will increase after menopause (the end of the menstrual cycle) around the age of 50 years. This is due to estrogen (steroid compounds) have a protective effect on the onset of atherosclerosis. In this study the author wants to create a system that can detect heart disease by users before ensuring himself to the doctor to diagnose heart disease which is very dangerous. The system that the author will design used the certainty factor method to provide an assessment of the symptoms of user diagnosis. The application was designed with the desktop-based visual studio software assistance that is easy to use by everyone because it is familiar with the windows display design.