bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dual-Component Ontograph Visualization
Authors: Guraliuk A G , Rostoka M L , Cherevychnyi G S , Zakatnov D O , Pavlysh T H 
Published: February 2021

Abstract
Today there are several generally accepted methods of storing data in an information network. One of the most modern is the presentation of data in the form of a semi-structured (with the possibility of fuzzy formalization) set – a knowledge base. Compared to databases, this view has several advantages: the ability to store complex heterogeneous information; the ability to expand and supplement the description of the subject area without reprogramming; visibility and accessibility of knowledge presentation to the user. But this advantage of them turns into a problem, which currently has been only partially solved. The data in the knowledge base can be in such a form that their presentation according to formalized rules and algorithms is impossible or ineffective. Currently, the most promising in terms of representing data structures is considered to be an ontological representation that copes well with displaying an arbitrary structure. Most of the visual representations of ontologies (Protégé in integration with OWLViz, OntoGraf, 3D Hyperbolyc, Tree, etc.) are images of nodes as a set of conditional points (small geometric shapes) connected by lines –ontographs. This approach to visualization is less informative and inconvenient to apply to the educational process. The need to create new approaches to the presentation of information, implement its accessibility and efficiency of usage is becoming increasingly important. Along with traditional information support in the form of databases, knowledge bases have begun to develop at a tremendous pace, which, when used effectively, provide significant competitive advantages. An important feature of knowledge bases is the ability to work with approximate sets. The authors developed ontograph visualization technology, partially implemented on the Ontos.xyz web resource. This resource allows you to visualize the vertices of the ontograph, the connections between them and assign each set of contexts that are related to it. Each of the nodes of the ontograph contains a specific descriptive context. The main feature of the Ontos editor is the ability to assign each node a context of all types supported by the browser. Including html pages, web 2.0 resources, etc. Also, the proposed system implements the visualization of knowledge bases, consisting of two components: a navigator that determines the path to some node of the ontograph that has children and a visualization slider for this node that displays these elements. The knowledge base viewer is a slider that resembles a photo gallery slider with advanced navigation. The ontological approach to servicing knowledge bases can be not only a means of organizing knowledge. The knowledge bases developed on the basis of the ontological approach make it possible to work actively with knowledge, to solve problems associated with education, the development of artificial intelligence, decision-making systems, and many other areas where approximate sets can be used.
Organization of the interface of games and applications, developed for children with intellectual disability
Authors: Markova Gergana V , Byalmarkova Petya Y 
Published: February 2021

Abstract
In this article will be discussed the issues related to the requirements for the development of digital games for children with intellectual disability. We proposed structured requirements for the design of different types of games in terms of interface, design technologies, color models, object shape and brightness, scope in applications of sound, game duration, and so on.
Naval Architectural Aspects in The Design of a Hybrid Hydrofoil-Submarine Craft
Authors: Wardhana W , Wardhana E M , Soetardjo M , Nichita O F 
Published: February 2021

Abstract
Indonesia is the largest archipelago country in the world. Territorial disputes and illegal fishing are some main threat of maritime defense. One of the solutions is to provide a multi-mission vehicle. Submarine craft has the advantage of undetectable to ambush the threats. Hydrofoil craft has the advantage of higher speed than the conventional high-speed craft. The purpose of this research is to combine two distinctive and one conventional concept into one craft. This craft has to has a light structure to support hydrofoil mode and able to submerge. The material of the hull uses aluminum and for wing and propulsion system structure use carbon steel. This craft uses hydraulic propulsion that the main engine moves the hydraulic pump. The hydraulic pump flows oil to the hydraulic motor where located in the nacelle. The hydraulic motor rotates the shaft and propeller. This propulsion system requires the propeller to submerge in the water, therefore the strut which supports the wing and propulsion system has to design retractable. All important parameters are included in this paper.
Impact of seabed slope on steel catenary riser touchdown zone response
Authors: Ogbeifun A. M. , Oterkus S. , Race J. , Naik H. , Moorthy D. , Bhowmik S. , Ingram J. 
Published: February 2021

Abstract
Several factors can affect the response of steel catenary risers (SCR) around its touch down zone (TDZ). These include the stiffness of the soil, the soil suction force on the riser TDZ, the soil degradation with cyclic TDZ loading, etc. Riser strength and fatigue response computation are usually performed considering flat seabed and with the use of rigid or linear (spring) riser soil interaction model. However, bathymetric information obtained for the SCR lay path on the seabed reveal complex seabed profile variation, indicating that the seabed is far from being flat around the SCR TDZ. This paper presents findings from an investigation conducted on the influence of seabed slopes on the strength and fatigue response of SCRs, using a non-linear (NL) riser soil interaction model. The responses of SCRs on positively and negatively sloped seabed (rotated about the static touch down point on flat seabed) are compared with responses of SCRs on flat seabed. From the results, it can be deduced that the SCR dynamic and fatigue responses may be overpredicted or underpredicted in magnitudes dependent on the slope deviation of actual seabed from a flat seabed.
Societal risk assessment of terminal and oil refinery unit
Authors: Dinariyana AAB , Artana KB , Handani DW , Sarasvati FI , Aprilia PW 
Published: February 2021

Abstract
This paper presents the societal risk assessment of oil refinery in one of the oil companies in East Java. The oil company operates-a terminal for loading and unloading of variety petrochemical products. The products are categorized as flammable which could be hazardous. To prevent unlikely event of hazards such as fire, risk assessment is needed to know the level of risk and propose any mitigation if the risk is unacceptable. The risk assessment is done for all the processes that occurs such as loading and unloading of products and the chemical process in the oil refinery. The system is categorized into 8 nodes based on their function. Firstly, Hazard and Operability (HAZOP) is carried out using BS IEC 61882 standard to identify the deviation of the system, the causes and how to prevent it. The frequency analysis of failure of component is done by using Fault Tree Analysis (FTA) and Event Tree Analysis (ETA) which based on the DNV failure guidance and Oil and Gas Producers (OGP) data as input. In order to know the level of consequence, fire modelling is carried out to simulate how the jet fire and pool fire could impact into the social around the oil refinery in form of heat intensity. The fire modelling for the pool fire and jet fire results the pool radius and flame length respectively, based on the heat intensity of 4 kW/m2, 12.5 kW / m2, and 37.5 kW / m2. Risk is represented using F-N curve with UK-HSE standard. There is unacceptable risk that incurred for jet fire in pipeline and its components from the feedstock tank into pre-cut column, scenario 200 mm hole diameter. Mitigation is done using LOPA to bring the risk to the acceptable region by adding a gas detector which has changed the frequency of system failure from 1.44E-03 to 2.88E-06.
Analysis of Human Factors in Ship-to-ship Collision Accident: A Semi-quantitative Approach Based on Network Theory
Authors: Adhita I G M S , Furusho M 
Published: February 2021

Abstract
As long as human beings operate the ship, human factors always have a substantial contribution to ship operation success and failure. Thereby, a study related to human factors, especially about the officer on board, is essential to create better maritime transportation. This research proposed the semi-quantitative analysis to determine how human factors are involved in a ship-to-ship collision using a network theory perspective. The study was conducted by describing the dependency amongst human activities (officer onboard) during ship-ship encounters. The ship-to-ship encounters model has been done in an undirected graph consisting of nodes and arcs. Through the vertex performance rate, system performance could be evaluated. Hence this research aimed to define the weight evolution when the unintended action emerges in a node and distributes its weight to its couplings. In conclusion, the network model for ship-to-ship collision accidents can describe the weight spreading process among functions and how it affects system performance then causes an accident.
The effect of low tempering, medium tempering, and high tempering heating temperature variations in the type of medium carbon steel ST 60 on microstructure, hardness, and toughness
Authors: Yudo H , Jokosisworo S 
Published: February 2021

Abstract
To determine the changes in the microstructure, impact strength, and hardness of the carbon steel medium type ST 60 with variations in temperature: quenching, tempering 200°C, tempering 400°C and tempering 600°C, then a heat treatment was given at 850°C for 30 minutes then quenched with brine solution with a salt content of 10% and continued with tempering for 30 minutes with variations in tempering temperature: 200°C, 400°C and 600°C. The chemical composition of the ST 60 steel specimen obtained that the main constituent elements are iron (Fe) = 98.1%, manganese (Mn) = 0.572%, silisium (Si) = 0.246%, and carbon (C) = 0.362%. Meanwhile, the hardness, impact, and microstructure test results show that the quenching specimen has the hardest and softest material properties. This is indicated by the highest hardness value of 772.67 VHN and the smallest impact value of 1.24 J / mm2. The martensite phase structure formed causes the material properties to be the hardest. In the 200°C tempering specimen the hardness began to decrease and the ductility increased as indicated by the hardness value of 625 VHN and the impact value of 2.02 J / mm2. In this specimen, a tempered martensite phase was formed, which is softer than martensite. In the 400°C tempering specimen, the hardness value was getting smaller, but the ductility increased as indicated by the hardness value of 448.67 VHN and the impact value of 2.56 J / mm2. The bainite phase structure with ductile / malleable properties was formed in this specimen. In the 600°C tempering specimen the properties of the resulting material were the most ductile and softest indicated by the lowest hardness value of 295 VHN and the highest impact value of 3.11 J / mm2. The structure of the ferrite and fine pearlite phases with very soft properties was formed in this specimen.
Implementation Study of Activity Based Costing System to Define Indirect Costs on Ship Repair Industries
Authors: Wahidi S I , Pribadi T W , Pribadi S R W , Megawati S 
Published: February 2021

Abstract
Good quality, the right turnaround time, and affordable service costs are three important points that must be paid attention to in repair shops offering their services. In determining the selling price of repair services, companies need accurate information about the cost of goods manufactured, which consists of direct costs and indirect costs. In general, the imposition of indirect costs to products uses a traditional cost accounting system so that costs distortions often occur. With the development of existing knowledge, companies must be able to increase their competitiveness and find alternative methods than traditional cost accounting systems. The activity based costing method developed and became a cost accounting method by assigning costs to activities based on the consumption / use of resources. First, activity identification is carried out based on existing business processes, both direct and supporting repair activities. Second, from the results of the identification of existing activities, identification of needs that trigger an activity that can be called an activity driver is carried out. After identifying the activity driver, the type of activity in the ship repair process is obtained which affects the high indirect cost expenditures. By using the activity based costing method, the indirect cost value on ship 1 is IDR 78,994,805, - and on ship 2 of IDR 57,890,169, -. These values are true values and can be traced to each activity through the use of resources. From these results it can be seen that the value of indirect costs when calculated by the activity based costing method produces a smaller value when compared to the existing method. On ship 1, using the activity based costing method, indirect costs decreased by 44% from the calculation of the existing conditions and on ship 2 decreased by 38% from the calculation of the existing conditions.
The Application of 2nd Generation Intact Stability Criteria to Ship Operating in Indonesia Waterway: Pureloss Stability
Authors: Anggara S , Maskar R D , Hariadi M R F , Ichsan L M , Zaky M , Kurniawan A 
Published: February 2021

Abstract
The development of 2nd Generation intact stability criteria has entered final chapter since nearly one-decade intensive work. The instrument is intended to measure ship stability in dynamic aspect on wave which has not been considered by its predecessor, IS Code 2008. Prior to enforcement, BKI has taken early preparation to establish inhouse calculation tool independently for assessing ship stability in accordance with the first 2 level of vulnerability criteria, i.e. Pureloss Stability. Semi performance based and direct assessment are introduced as the concept behind the calculation, thus the procedure is quite complex and need more time to proceed which leads to utilize automation. Furthermore, a set number of types of ship with various dimension have been tested to the system in respect to Indonesia environmental condition. The results show that typical ships are vulnerable to certain criteria which may beneficial for operator to gain initial precaution.
Theoretical Study for Predicting Response Water Column in a Moonpool
Authors: Turbaningsih O , Nur H I 
Published: February 2021

Abstract
Moonpool commonly installed in production barge, drilling vessel, pipe laying vessel, survey vessel and offshore diving vessel. Moonpool is an opening vertical wall through the deck from top to bottom of the vessel. The main purpose of using moonpool is to perform lifting/lowering of subsea equipment. It considers as the most effective subsea handling method, but it has disadvantages with oscillation of water column inside moon pool. The purpose of this study is to understand the correlation between response water column inside the moonpool with environmental load and the motion of the floating structure during operational time or transit condition. During transit condition, the forward speed of the barge is zero, the excitation force only caused by incoming waves and barge heave motion. The study started by defining the barge vertical movement and all the forces acting in the body of moonpool to obtain simplified harmonic equation for water column motion and plotting the result using MATLAB software. The amplitude of heave barge and water column piston mode is strongly influenced by environmental conditions, in this case the significant wave height and also the dimension of the moonpool area since it is giving additional added mass into the motion. The large amplitude of the water column likely to occur if critical frequency is in the range of wave excitation. Thus, to prevent any over flowing condition during lowering/lifting operation via moonpool, the limiting sea-state condition should be identified for the designated location.
Bedroom Module Design on Offshore Hotel as a Support for Maritime Based Tourism Accommodation (Study Case in Sendang Biru, Malang, Jawa Timur, Indonesia)
Authors: Rucitra A A , Sambodho K , Wardani K K , Mulyadi Y 
Published: February 2021

Abstract
Aaquaculture in Indonesia has only been used as a place for aquatic biota cultivation. At the same time, the structure of the building above the grove has not been used to the fullest. Therefore, with the development of the existing floating net design, support facilities for the offshore tourism sector are being developed, one of which is the Hotel. Hotel on aquaculture is an interesting development concept because it utilizes space on offshore sea buildings with facilities that educate about aquaculture and maritime potential in Indonesia for tourists staying at hotels. In designing the hotel on top of the aquaculture building, it is necessary to analyze the space requirements for hotel users to be comfortable on top of the building in the middle of the sea. Apart from that, the hotel design aesthetic is also needed, in order to attract the attention of tourists. Based on the design by considering the macro and micro concepts, as well as the arrangement of the hotel space, a design with a natural minimalist concept is obtained but still can meet the needs of the user space.
Insomnia Symptoms and Acute Coronary Syndrome-Induced Posttraumatic Stress Symptoms: A Comprehensive Analysis of Cross-sectional and Prospective Associations
Authors: von Känel Roland , Meister-Langraf Rebecca E , Pazhenkottil Aju P , Barth Jürgen , Schnyder Ulrich , Schmid Jean-Paul , Znoj Hansjörg , Princip Mary 
Published: February 2021

Abstract

Background
Acute coronary syndrome (ACS) induces clinically significant posttraumatic stress symptoms (PTSS) in 12% of patients. Subjective sleep problems are a risk factor for the development of PTSS, but this is underexplored in patients with ACS.

Purpose
To examine the association of insomnia symptoms with ACS-induced PTSS.

Methods
In this longitudinal study with 154 patients (all white, 84.4% male, mean age 58.7 years) with a verified ACS, insomnia symptoms were interviewer assessed at hospital admission and at 3 months, using the Jenkins Sleep Scale (JSS)-4. ACS-induced PTSS were assessed with the Clinician-Administered Posttraumatic Stress Disorder Scale 3 months after hospital admission. In multivariable linear models, insomnia symptoms were regressed on PTSS, adjusting for demographics, clinical variables, health behaviors, and psychological data, including cognitive depressive symptoms.

Results
Greater insomnia symptoms at admission (β = .165, p = .034), greater increase in insomnia symptoms from admission to 3 months (β = .233, p = .008), and greater insomnia symptoms at 3 months (β = .239, p = .002) were independently associated with more severe total PTSS at 3 months. Concerning the individual PTSS clusters, both insomnia symptoms at admission (β = .214, p = .007) and at 3 months (β = .213, p = .012) were independently associated with reeexperiencing symptoms. Removing sleep items from PTSS scores and excluding patients on antidepressants in two sensitivity analyses did not substantially change the results.

Conclusions
Insomnia symptoms could play an important role in the development and severity of ACS-induced PTSS. This relationship seems not simply explained by the fact that sleeping difficulties are inherent to the phenotype of posttraumatic stress disorder.

Clinical Trial information
NCT01781247.
The usefulness of an ambulatory care pharmacy performance dashboard during the COVID-19 pandemic in a complex tertiary care system
Authors: Al-Jazairi Abdulrazaq S , Horanieh Bashar K , Alswailem Osama A 
Published: February 2021

Abstract

Purpose
To describe the usefulness of an innovative “semi–real-time” pharmacy dashboard in managing workload during the unpredictable coronavirus disease 2019 (COVID-19) pandemic.

Summary
We created a pharmacy dashboard to monitor workload and key performance indicators during the dynamic COVID-19 crisis. The dashboard accessed the prescribing workload from our clinical information system and filled prescriptions from robotic prescription dispensing systems. The aggregated data was visualized using modern tools. The dashboard presents performance data in near real time and is updated every 15 minutes. After validation during the early weeks of the COVID-19 crisis, the dashboard provided reliable data and served as a great decision support aid in calculating the backlog of prescribed but unfilled prescriptions. It also aided in adjusting manpower, identifying prescribing and dispensing patterns, identifying trends, and diverting staff resources to appropriate locations. The dashboard has been useful in clearing the backlog in a timely manner, staff planning, and predicting the next coming surge so that we can proactively minimize accumulation of backlogged prescriptions.

Conclusion
Developing a dynamic, semi–real-time pharmacy dashboard during unstable circumstances such as those that have arisen during the COVID-19 pandemic can be very useful in ambulatory care pharmacy workload management.
Improved ammonia production from soybean residues by cell surface-displayed l-amino acid oxidase on yeast
Authors: Watanabe Yukio , Aoki Wataru , Ueda Mitsuyoshi 
Published: February 2021

ABSTRACT
Ammonia is critical for agricultural and chemical industries. The extracellular production of ammonia by yeast (Saccharomyces cerevisiae) using cell surface engineering can be efficient approach because yeast can avoid growth deficiencies caused by knockout of genes for ammonia assimilation. In this study, we produced ammonia outside the yeast cells by displaying an l-amino acid oxidase with a wide substrate specificity derived from Hebeloma cylindrosporum (HcLAAO) on yeast cell surfaces. The HcLAAO-displaying yeast successfully produced 12.6 m m ammonia from a mixture of 20 proteinogenic amino acids (the theoretical conversion efficiency was 63%). We also succeeded in producing ammonia from a food processing waste, soybean residues (okara) derived from tofu production. The conversion efficiency was 88.1%, a higher yield than reported in previous studies. Our study demonstrates that ammonia production outside of yeast cells is a promising strategy to utilize food processing wastes.
Oxygen concentration affects frequency and range of transconjugants for the incompatibility (Inc) P-1 and P-7 plasmids pBP136 and pCAR1
Authors: Ochi Kentaro , Tokuda Maho , Yanagiya Kosuke , Suzuki-Minakuchi Chiho , Nojiri Hideaki , Yuki Masahiro , Ohkuma Moriya , Kimbara Kazuhide , Shintani Masaki 
Published: February 2021

ABSTRACTThe frequency of transconjugants were compared for the incompatibility (Inc) P-1 and P-7 plasmids pBP136 and pCAR1 under aerobic and anaerobic conditions. Filter mating assays were performed with one donor strain and one recipient strain using different donors of Pseudomonas and recipient strains, including Pseudomonas, Pantoea, and Buttiauxella. Under anaerobic condition, frequencies of transconjugants for both plasmids were 101-103-fold lower than those under aerobic condition regardless of whether aerobically or anaerobically grown donors and recipients were used. To compare the transconjugant ranges under aerobic and anaerobic conditions, conjugation was performed between the donor of pBP136 and recipient bacteria extracted from environmental samples. Several transconjugants were uniquely obtained from each aerobic or anaerobic condition. Our findings indicate that a plasmid can differently spread among bacteria depending on the oxygen concentrations of the environment.