bluuebunny/crossref_metadata_2025 huggingface dataset:
Information-decision model for self-controlling enterprise processes
Authors: Zaborowski Mirosław
Published: April 2019

This study demonstrates that integrated management and direct control systems may be organised as integrated enterprise process control (EntPC) systems, which are composed of self-controlling enterprise business processes. A business process has been defined as a control system for business activities, which are considered to be business processes of the lower level, or as base processes that are control systems for control plants in the form of infrastructure operations. An enterprise process also influences its delivery. This definition has been generally compared with definitions used in approaches of BPMN, YAWL, ARIS, DEMO and MERODE. Each enterprise process has its own controlling unit that contains one information unit and one decision unit, as well as memory places of the information-decision state variables that are processed by the business transitions that belong to these units. The i-d state variables are attributes of business objects, i.e. business units, business roles, business activities, business accounts and business products. Their values are transferred between business transitions that belong to the same or different controlling units. Relationships between business objects, business transitions and i-d state variables, as well as the other most important concepts of the EntPC system framework (EntPCF), are presented in this paper as the class diagrams of the enterprise process control language (EntPCL).
Pilot Study on the Application of Employee Scheduling for the Problem of Safety Instrumented System Design and Maintenance Planning for Remotely Located Oil and Gas Facilities
Authors: Redutskiy Yury
Published: April 2019

The technology of production, transportation, and processing of oil and gas involves various hazardous processes. To mitigate the risk that these processes pose, the technological solutions work closely with the automated control and safety systems. The design and organisation of maintenance for the automated safety instrumented systems (SIS) have a significant bearing on the overall safety of operations in this industry. Over the past few decades, many hydrocarbon resources have been discovered in unconventional environments, such as remote, offshore, and arctic locations. Transportation of engineering personnel to these remote locations and back, and thereby, the organisation of the shift work poses additional challenges for the petroleum sector. Under such circumstances, the workforce-related costs play a considerable role in the overall cost of the technological solution and thereby the decisions regarding the workforce organisation should be addressed in the framework of evaluating and choosing the appropriate safety measures. That is why the research presented in this paper aims to address the lifecycle of the technological solution integrating the problems of SIS design, maintenance planning, and employee scheduling into a single decision-making framework to optimise the set of technical and organisational safety measures inherent in the SIS. The performance and maintenance of the SIS are described with a Markov model of device failures, repairs and technological incidents occurrence. The employee scheduling part of the mathematical model utilises the set-covering formulation of maintenance crews taking particular trips. A black-box optimisation algorithm is used to find reasonable solutions to the integrated problem of engineering design and workforce planning. The decisions include the choices of the components and structures for the safety system, the facility overhaul frequencies, the maintenance personnel size, as well as the schedules of trips and shifts for the crews.
Durability of airfield pavement cement concrete in the presence of de-icing agents
Authors: Kowalska Danuta , Rumak Aleksandra
Published: April 2019

In Poland the climatic conditions in the autumn and winter season are particularly severe for concrete infrastructure. Concrete’s resistance to frost and chemical deicing agents determine the durability of cement concrete pavement. An increase in the premature deterioration of airfield pavements exposed to new generation deicing chemicals may suggest that there is a relation between the damages and the application of the deicers. The paper presents selected results of microstructural analysis of the airfield pavements concrete exposed to the deicers based on acetates and formates. Microscopic evaluation was carried out with the scanning electron microscope (SEM). The local chemical compositions of the phases of interest were performed using the Energy Dispersive X-ray analysis (EDX).
Investigations of the susceptibility of unmanned aerial vehicles on intensive microwave radiation
Authors: Sulkowski Jarosław , Błaszczyk Janusz , Grzybowski Adam , Karcz Kacper , Kowaleczko Paweł
Published: April 2019

Commercially available drone type unmanned aerial vehicles (UAV), as well as parts and subsystems enabling the assemble of UAVs, are becoming more and more widely available, and their performance is constantly improving. The current possibilities of a drone assembled by a hobbyist predispose are not only to be used as a reconnaissance tool but also as a guided missile. The use of a camera with a video stream transmitter simultaneously with virtual reality goggles and video stream receiver gives the pilot an impression of being on the drone, which makes it possible to control it with extreme precision, even at high speeds. The article presents research aimed at determining the extent and type of damage made on exemplary racer drone caused by intense microwave field radiations.
Influence of source data on fatigue estimation of a fighter aircraft
Authors: Reymer Piotr , Zieliński Wojciech , Kurnyta Artur
Published: April 2019

Aircraft structures during operation are exposed to fluctuating loads caused both by aerodynamic and inertial loads. This fluctuation leads to the creation of fatigue cycles, which gradually diminish the residual durability of the structure. During the design process, the flight envelope is defined as well as the design load spectrum, which then defines the durability of the structure (often expressed in means of flight hours). However, during the operation of an individual aircraft the actual load cycles can be significantly lower or higher than the designed; therefore, load monitoring is essential for safe operation of aircraft structures.

The following article shows the results of fatigue analysis based on flight data from different flight data recorders for the Su-22 fighter aircraft.
An expert system aided method of the blade vibration sources identification with blade-tip timing (BTT) signal decomposition
Authors: Borowczyk Henryk , Rokicki Edward , Spychała Jarosław
Published: April 2019

An expert system aided method of the blade-tip signal decomposition to the turbine blade vibration sources identification is presented. The method utilises a multi-valued diagnostic model based on the discrete wavelet transform. Proposed algorithm consists of four stages: signal decomposition into low- and high-frequency components (approximations and details), approximations and details parameterization, multi-valued encoding of parameters obtained at the second stage, an expert system use of the turbine blade vibration sources identification.
Pneumatic propellant system model of an emergency parachute system for a vertical take-off and landing UAV
Authors: Jastrzębski Grzegorz , Szczepaniak Paweł , Nowakowski Mirosław , Ułanowicz Leszek , Jóźko Michał , Włodarczyk Jakub
Published: April 2019

The subject of this publication is a mathematical model of a pneumatic supply system for an emergency parachute system. This system is intended for a vertical take-off and landing UAV. An overview of emergency parachute landing system designs is presented in the introduction. Based on a schematic diagram and a 3D computer model, the construction and operation principles of an emergency parachute system, currently being developed at AFIT, was presented. A mathematical model, which enables the determination of the energy of gas (compressed CO2) stored in the accumulator tank was described. The conducted tests, which involved weighing the accumulator after filling with liquefied CO2 from a special cartridge and equivalent mass ejections were discussed. These tests involved recording the track of the equivalent mass movement and time necessary to determine velocity. The results of calculations regarding the equivalent mass energy imitating an emergency parachute, CO2 volume and mass in the accumulator in liquefied and gaseous state were presented. Based on the conducted calculations and the obtained characteristics, the developed mathematical model was assessed, and the final conclusions formulated.
CrossFit across Three Platforms: Using Social Media to Navigate Niche Sport Challenges
Authors: Kang Sun J. , Rice Jason A. , Hambrick Marion E. , Choi Chulhwan
Published: April 2019

Niche sports have limited opportunities to promote their sport offerings via traditional communication channels and may rely upon alternatives such as social media to accomplish their marketing goals (Puchan, 2004). Williams and Chinn (2010) developed a relationship marketing conceptual framework to examine social media usage and marketing within a sports context. This study used the framework with the burgeoning sport of CrossFit and examined three primary organizational relationship-marketing activities: (a) Information, (b) Interaction, and (c) Promotion. The purpose of this study was to investigate the use of social media by key members of the CrossFit community. The study addressed the following research questions: RQ1. What are the usage categories similarities and differences observed across the social media platforms? RQ2. What are the group usage similarities and differences observed across the social media platforms? and RQ3. What are the group usage similarities and differences observed across the usage categories? A content analysis of 5,565 Twitter, Facebook, and YouTube messages was used to explore these activities. The CrossFit social media users—CrossFit Games, regions, boxes, athletes, and sponsors—used the platforms primarily to provide information about the sport and interact with the community, while promotion was employed less frequently. CrossFit and other niche sports can use social media to provide information and build community within their sports, before attempting to create online communities and promote their products.
Pacific Sea Levels Rising Very Slowly and Not Accelerating
Authors: Parker Albert , Ollier Clifford
Published: April 2019

Over the past decades, detailed surveys of the Pacific Ocean atoll islands show no sign of drowning because of accelerated sea-level rise. Data reveal that no atoll lost land area, 88.6% of islands were either stable or increased in area, and only 11.4% of islands contracted. The Pacific Atolls are not being inundated because the sea level is rising much less than was thought. The average relative rate of rise and acceleration of the 29 long-term-trend (LTT) tide gauges of Japan, Oceania and West Coast of North America, are both negative, −0.02139 mm yr−1 and −0.00007 mm yr−2 respectively. Since the start of the 1900s, the sea levels of the Pacific Ocean have been remarkably stable.
Selected Geosites for Geoheritage, Geotourism, and Geoconservation in Songkhla Province, Southern Thailand
Authors: Nazaruddin Dony Adriansyah
Published: April 2019

A systematic investigation has been conducted in several selected geosites in Songkhla Province (Southern Thailand) including inventory, characterization, classification, assessment, and evaluation to study their potentials for geoheritage, geotourism, and geoconservation. A list of geosites have been established for this study, consisting of Songkhla Lagoon/Lake, Samila Beach, Tone Nga Chang (Elephant’s Tusk) Waterfall, Khao Rup Chang (Dragon and Elephant) Cave, and Khao Daeng Hot Spring. Characterization of all these sites have showed that most of the sites have unique and interesting landforms (geomorphological sites), except only a hot spring site (hydrogeological site). The geosites have features of small to large scales (tens meter to larger than 10 km). Qualitative and quantitative assessments have been carried out based on geoheritage values (scientific & educational, aesthetic, recreational, cultural, etc.), with the state/provincial to national levels of significance. Geoconservation efforts should be conducted in all these sites for some purposes, such as research and education as well as geotourism in the province and the region.
A Comparative Study of Political Communication in Televised Pre-Election Debates in Poland and the United States of America
Authors: Hinton Martin , Budzyńska-Daca Agnieszka
Published: April 2019

This paper combines quantitative and qualitative methodologies to study the persuasive strategies employed by candidates taking part in televised pre-election debates in Poland and the United States between 1995 and 2016. First, the authors identify the key strategies and calculate the frequency with which they are used by individual candidates. This allows for numerical comparisons between politicians in the two polities, as well as between winners and losers, and candidates of the right and the left politically. These statistical results led the authors to look more closely at the individual styles of two contrasting debaters. We conclude that the rhetorical landscape of political communication does not differ greatly between the two countries; although the data suggest noticeable differences in the approach of political parties and between individuals.
Advocacy and Enactment: Exercitives and Acts of Arguing
Authors: Corredor Cristina
Published: April 2019

Goodwin and Innocenti (2016) have contended that giving reasons may be a form of enactment, where a claim is supported by the very activity of making the claim. In my view, the kind of interaction that these authors are considering should be analysed as a form of advocacy, and therefore as an exercitive speech act. In this paper I will suggest that acts of advocating, qua illocutions, institute a normative framework where the speaker’s obligation to justify cannot be redeemed by a mere “making reasons apparent”. In general, giving reasons is part of the procedure in virtue of which the advocate’s authority to exert influence is recognised by their addressees. This illocutionary effect should be distinguished from other perlocutionary consequences.
AI Case Studies: Potential for Human Health, Space Exploration and Colonisation and a Proposed Superimposition of the Kubler-Ross Change Curve on the Hype Cycle
Authors: Williams Matthew , Braddock Martin
Published: April 2019

The development and deployment of artificial intelligence (AI) is and will profoundly reshape human society, the culture and the composition of civilisations which make up human kind. All technological triggers tend to drive a hype curve which over time is realised by an output which is often unexpected, taking both pessimistic and optimistic perspectives and actions of drivers, contributors and enablers on a journey where the ultimate destination may be unclear. In this paper we hypothesise that this journey is not dissimilar to the personal journey described by the Kubler-Ross change curve and illustrate this by commentary on the potential of AI for drug discovery, development and healthcare and as an enabler for deep space exploration and colonisation. Recent advances in the call for regulation to ensure development of safety measures associated with machine-based learning are presented which, together with regulation of the rapidly emerging digital after-life industry, should provide a platform for realising the full potential benefit of AI for the human species.
Dealing with Free Will in Contemporary Theology: is It Still a Question?
Authors: Oviedo Lluis
Published: April 2019

Free will is a very hot issue in several theoretical settings, but less in theology, or at least not as much as use to be in former times, when the discussions on sinfulness, grace and freedom were igniting a long season of controversies, especially in the Reformation time. Even in ecumenical dialogue apparently free will does not play a great role, since the reached consensus seems quite peaceful and agreement dominates over discussion. However, some theological insights, especially Karl Rahner reflections, are still worthy to consider and possibly theological anthropology should pay more attention to the current debate and its consequences for the way we understand human nature and its relationship with God.
Thought Experiments and Novels
Authors: Milligan Tony
Published: April 2019

Novels and thought experiments can be pathways to different kinds of knowledge. We may, however, be hard pressed to say exactly what can be learned from novels but not from thought experiments. Headway on this matter can be made by spelling out their respective conditions for epistemic failure. Thought experiments fail in their epistemic role when they neither yield propositional knowledge nor contribute to an argument. They are largely in the business of ‘knowing that’. Novels, on the other hand can be an epistemic success by yielding ‘knowledge how’. They can help us to improve our competences.
CYBERDEMOCRACY: A NEW PHENOMENON IN SPANISH SOCIOLINGUISTICS
Authors: Mosina S. К.
Published: April 2019

Te article analyses ciberdemocracy as a new phenomenon that emerged in the Spanish society in the 21st century. Te development of digital technologies and ICT’s (in particular, Internet), which is substantiated by the statistics for the last decade provided by the Spanish National Institute of Statistics and the comparative analysis of data for 2008 and 2016, created new political instruments and means of getting ideas benefcial to certain political groups across to the electorate. Not only do linguists research into this phenomenon but also the Spanish Government. Te article presents characteristic features of ciberdemocracy, gives its defnition on the basis of those provided by Spanish authors and suggests a fgure that illustrates a systemic functioning of ciberdemocracy. Te inﬂuence of the new phenomenon on the Spanish language is analysed from the point of view of social and cognitive linguistics: the emergence of NetSpeak, neologisms, the penetration of emotive lexis into messages due to the limited characters number for one message or post in social netwoks or web-sites, as well as new manipulative instruments of journalese discourse to exercise aﬀect on the audience. Te article contains ideas of possible further changes in the Spanish language due to ciberdemocracy.
CONCEPT “NAMUS” (“HONOR, DIGNITY”) IN PHRASEOLOGICAL AND PAREMIOLOGICAL UNITS OF THE AVAR LANGUAGE PICTURE OF THE WORLD
Authors: Khaybulaeva M. M.
Published: April 2019

Models and rules of behavior, formed in the cultural space of each people, are perceived as ethnic. Te Avar language picture of the world reﬂects the worldview of ancestors, their experience, wisdom and relation to life and surrounding phenomena in the form of set expressions, which are signifcant for a daily life of the Avars and make their speech more colourful and expressive. Te article deals with the peculiarities of the concept “namus” (“honor”, “dignity”) realization in the Avar phraseological and paremiological picture of the world. Based on the data of dictionaries, associative experiments and the analysis of proverbs and phraseological units, there were revealed and described national cultural components of the paremiological images associated with “honor” and “dignity”. Also, there were analyzed paremias and phraseological units used for qualitative characteristics of a person. It was concluded that «namus» is one of the key concepts of the Avar language picture of the world, which is confrmed by semantic capacity and high derivational potential of the concept, represented by more than 150 lexemes. It was also showed that this concept also realizes the semantics of «duty», «heroism», «duty», «respect», «humanity». Te study helped see possible semantic actualization of the concept as well as its national specifcity.
PROBLEMS OF PERSIAN-RUSSIAN LEGAL TRANSLATION ON THE EXAMPLE OF MARRIAGE CONTRACT
Authors: Amiri M. A.
Published: April 2019

Te ever-expanding international contacts reveal a great importance of studying and translating various kinds of documents and legal texts. Tis rather complicated process involves a number of problems that a translator needs to overcome. Te problems of legal texts translation are aggravated by the discrepancies between the legal systems of societies with social, cultural, ethnic, religious and other diﬀerences underlying them that fnd their reﬂection in diﬀerent legal terminology systems. Tis article deals with the problems of Persian-Russian translation of legal texts with cultural and religious specifcs. Recently, Iranian-Russian relations have been developing really actively. In this regard, the translation of legal texts, which include documents of identity, marriage and family relations regulations, inheritance, etc., is of particular relevance. Te Persian-Russian translation of these documents raises many questions and problems due to its cultural and religious nature. Problems are exacerbated by the lack of specialized dictionaries, databases and electronic resources. Tis article presents some ways of solving these problems, as well as practical recommendations on the example of the translation of marriage contracts.
TERMINOLOGICAL BLENDS IN FRENCH: TERM-BUILDING MODEL TYPOLOGY AND TRANSLATION METHODS
Authors: Gavrishina I. N. , Iakovleva N. V.
Published: April 2019

Te article is focused on the study of terminological blends (TB). Blending is viewed as one of the term-building models, diﬀerent from other similar methods of the word formation (compounding and abbreviation). Te reasons of the new terminological blends formation in the language are elucidated. Special attention is paid to the analysis of TB structural and semantic features, and there is put forward the typology based of morphological, semantic and phonological criteria. Te study reveals that the most frequent type of terms under consideration is constructed according to the following model: partial TB formed as a result of blending with clipping of the frst term and the second term retained entirely, without phonological overlap, in which the second component semantically dominates. In conclusion the authors analyse difculties that occur when TB content is transmitted to the Russian language and discuss the main methods of TB translation: transcription or transliteration, calque, adequate substitution, descriptive translation. Te article may be of scientifc interest for linguists who specialise in terminology, word formation and translation studies, as well as of practical interest for translation teachers.
The Surveillance Dimensions of the Use of Social Media by UK Police Forces
Authors: Egawhary Elena M
Published: April 2019

This paper explores the various surveillance practices involved in the use of social media for communication and investigation purposes by UK police forces. In doing so, it analyses internal policy documents and official guidance obtained through freedom of information (FOI) requests sent to 46 police forces in the United Kingdom. This analysis finds that UK police forces advise their staff to simultaneously engage in both surveillance and counter-surveillance strategies in their use of social media as a policing tool.
Platform Surveillance and Resistance in Iran and Russia: The Case of Telegram
Authors: Akbari Azadeh , Gabdulhakov Rashid
Published: April 2019

Telegram messenger, created by an exiled Russian entrepreneur Pavel Durov, brands itself as a non-mainstream and non-Western guarantor of privacy in messaging. This paper offers an in-depth analysis of the challenges faced by the platform in Iran, with 59.5% of the population using its services, and in Russia, where Telegram is popular among the urban dissent. Both governments demanded access to the platform’s encrypted content and, with Durov’s refusal, took measures to ban it. Relying on the concept of surveillant assemblage (Haggerty and Ericson 2000), this paper portrays how authoritarian states disrupt, block, and police platforms that do not comply with their intrusive surveillance. Additionally, we consider the tools and actors that make up internet control assemblages as well as the resistance assemblages that take shape in response to such control.
Eyes on the Road: Surveillance Logics in the Autonomous Vehicle Economy
Authors: Alvarez Leon Luis F
Published: April 2019

As emblematic products of a previous industrial era, cars are often tied to a sphere outside the digital economy and its ruling logics and are, therefore, governed by different ideas of privacy, agency, and sovereignty. However, as self-driving cars gain momentum, computerization, and automation, their platformization contributes to transforming the automobile as technology, industry, and cultural artifact. This creates new spaces of consumption within cars, around them, and between them—all of which are premised on highly detailed contextual information that is collected, processed, and transmitted in the process of navigation. Thus, the ads and entertainment delivered to passengers, the landscapes surrounding the vehicles, and the proprietary data networks that link self-driving car fleets are all redefined as revenue streams in the new auto economy. This paper explores the transformation of the existing auto economy in the context of the emergence of self-driving cars by following the transposition of surveillance logics that are central to the digital economy and by considering the implications of their adaptation to the arena of automated mobility.
Instagram and Gendered Surveillance: Ways of Seeing the Hashtag
Authors: Sebastian Melinda
Published: April 2019

This research examines gendered surveillance on Instagram. The hashtag serves as an affordance across platforms, and this work expands on the literature of the rhetorical functions of hashtags. Rather than focusing on the hashtag itself as the problem, I instead use it as a lens to examine an extant social issue that is beginning to receive attention from the growing body of feminist surveillance research. When Instagram allows certain terms and hashtags to flourish for weeks, months, and even years without removal, this type of rhetoric and image combination functions to socially isolate a particular group in a heteronormative and nonconsensual way that reproduces existing inequalities. Instagram (and also Facebook who owns it) has the opportunity to promote whatever content it chooses and to put forth whatever narrative or rhetorical formation of the world it wants to see. What world does Instagram want?
Policing as Digital Platform
Authors: Gates Kelly
Published: April 2019

Much of the discussion about platforms and “platform capitalism” centers on commercial platform companies like Google, Facebook, Amazon, and Apple. Shoshana Zuboff’s (2015) analysis of “surveillance capitalism” similarly focuses on Google as the trailblazer pushing the new logic of accumulation that is focused on data extraction and analysis of human activities. In his typology of platform companies, Nick Srnicek (2017) includes less visible industrial platforms that situate themselves as intermediaries between companies rather than between companies and consumer-users. In this article, the focus is a platform-building effort that looks something like an industrial platform but differs in the sense that the company in question, Axon Enterprise, aims to situate itself as an intermediary within and among law enforcement agencies (non-market entities) as a means of building a large-scale data-extractive system of monetization. Axon’s business strategy is emblematic of the ways that police evidence and record-keeping systems are being reimagined, and to some extent reconfigured, as sources of data extraction and analytics on the model of the platform. Whether Axon succeeds or is eclipsed by a competitor like Palantir or even Amazon or Microsoft, the process of reimagining and reorganizing policing as a platform is underway—a process that, to paraphrase Zuboff, deeply imbricates public and private surveillance activities, dissolving the boundary between public and private authority in the surveillance project.
Survival of the (Data) Fit: Self-Surveillance, Corporate Wellness, and the Platformization of Healthcare
Authors: Charitsis Vassilis
Published: April 2019

The emergence and proliferation of smart sensor technologies has enabled the self-tracking of everyday life in an unprecedented manner as the logic of quantification and datafication extends to diverse aspects of life, including education, work, and healthcare. This development is epitomized by the numerous corporate wellness programs that are based on the use of self-tracking tools. Faced with increased competition, Fitbit, one of the most popular brands in wearable self-tracking devices, recently launched the Fitbit Care platform. Its aim is to establish itself as the leading actor in employee corporate wellness programs by providing comprehensive offerings that include self-tracking tools, apps, digital interventions, and personalized health coaching. Focusing on the Fitbit Care platform, this paper examines the intersection of self-surveillance, corporate wellness, and healthcare, highlighting the socioeconomic inequalities propagated by the ideology of dataism that privileges those who are able to engage in activities that generate desirable data.
Scoot over Smart Devices: The Invisible Costs of Rental Scooters
Authors: Boyles Petersen Andrew
Published: April 2019

In the past year, transportation rental companies, including Bird, Lime, and Spin, have dropped hundreds of thousands of rental scooters across North America. Relying on mobile apps and scooter-mounted GPS units, these devices have access to a wide-variety of consumer data, including location, phone number, phone metadata, and more. Pairing corroborated phone and scooter GPS data with a last-mile transportation business model, scooter companies are able to collect a unique, highly identifying dataset on users. Data collected by these companies can be utilized by internal researchers or sold to advertisers and data brokers. Access to so much consumer data, however, poses serious security risks. ­Although Bird, Lime, and Spin posit electric scooters as environmentally friendly and accessible transportation, they also allow for unethical uses of user data through vaguely-worded terms of service. To promote more equitable transportation practices, this article will explore the implications of dockless scooter geotracking, as well as related infrastructure, privacy, and data security ramifications.
Partial Platforms and Oligoptic Surveillance in the Smart City
Authors: Murakami Wood David , Mackinnon Debra
Published: April 2019

Smart city technologies are proliferating in our urban environments. The latest iteration of the urban techno-fix, cities on a global level have begun piloting and plugging into a range of “smart” infrastructure and IoT, resulting in granular and even enactments of “the actually existing smart city.” Rather than evoking the once promised vision of the totalizing smart city, the adoption of these technologies draws attention to the fractured, varied, and layered characteristics of these systems. This paper draws on research into GeoPal, an asset management platform used mainly by business improvement areas (BIAs)—in order to ground our theoretical discussion of oligoptic geospatial surveillance.
Asymptotic Behavior of Bounded Solutions to a First Order Gradient-like System
Authors: Tran Minh-Phuong , Nguyen Thanh-Nhan
Published: April 2019

In this paper, we prove the long time behavior of bounded solutions to a first order gradient-like system with low damping and perturbation terms. Our convergence results are obtained under some hypotheses of KurdykaLojasiewicz inequality and the angle and comparability condition.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.
PERILAKU SHARING KONTEN ONLINE: FAKTOR MOTIVASI INDIVIDUAL DAN PENGARUH MODERASI FAKTOR SITUASIONAL
Authors: Artanti Yessy , Hartini Sri
Published: April 2019

Online information sharing behavior is an activity of exchanging or sharing information quickly and widely, as well as viruses on a computer, using interactive internet networks. To comprehensively comprehend the process of social transmission and the factors that influence it, it is necessary to know the variables that affect social relations. Previous studies have still little to discuss the role of social processes that encourage individuals to decide on the affinity of online content sharing. In addition, there are still not many studies that emphasize what kind of online content causes content to be more viral than other types of content supported by individual motivational factors and some variables that can strengthen or even weaken that influence. This research uses 208 student respondents through the Moderated Regression Analysis tool to examine situational factors as moderator variables on the relationship between individual motivational factors and online content sharing behavior. The results of the analysis found that there were significant effects of individual motivational factors on online content sharing behavior but this effect became not significant in the presence of situational factors as moderator variables. This research contributes significantly to marketing strategies in a company by utilizing the type of content and individual motivational factors that cause viral content or news to be faster.
PERSON-ORGANIZATION FIT DALAM RANTAI DISTRIBUSI PEMASARAN
Authors: Ramli Abdul Haeba
Published: April 2019

AbstractEmployee turnover in the poultry distribution company in Jakarta indicates low person-organization fit, organizational commitment and high turnover intention. The purpose of this study is to determine the effect of person-organization fit and organizational commitment on turnover intention. Quantitative methods are used in this study. The population for this research is the employees of a chicken distribution company in Jakarta with more than 2.000 people. The sampling technique used is purposive sampling with the number of samples of 128 peoples. Data collection technique uses questionnaires and regression analysis. Finding on the research results shows that there is positive and significant influence of person-organization fiton organizational commitment and negative and significant influence of person-organization fit on turnover intention, and also the influence of person-organization fit and organizational commitment on turnover intention.
Primary Synovial Osteochondromatosis Discovered After Ankle Sprain
Authors: Collinsworth Keith M. , Bush Lisabeth , Goss Donald
Published: April 2019

A 23-year-old military cadet presented to a direct-access physical therapy clinic for an ankle sprain 1 day after inverting his left ankle. Following examination, the physical therapist ordered lower-leg radiographs, which showed no fracture; however, small, rounded, partially calcified bodies were noted in the ankle. Additional ankle imaging was ordered under radiologist guidance. Preoperative computed tomography of the cadet's left ankle, ordered by orthopaedics, demonstrated chondral and osteochondral bodies. J Orthop Sports Phys Ther 2019;49(4):284. doi:10.2519/jospt.2019.8383
Calcaneal Osteosarcoma in a Patient Referred for Plantar Heel Pain
Authors: Halfpap Joshua , Allen Christopher , Deyle Gail
Published: April 2019

A 28-year-old man was referred to physical therapy from his primary care provider with variable and intermittent left lateral plantar heel pain that began insidiously about 10 months prior. Radiographs of the foot and ankle were completed prior to the physical therapy evaluation and interpreted as noncontributory. Because his pain and function were minimally improved after 4 weeks, the patient was referred for magnetic resonance imaging. An abnormal mass in the calcaneus prompted an urgent referral to an orthopaedic oncologist. Percutaneous biopsy confirmed a diagnosis of calcaneal osteogenic sarcoma. J Orthop Sports Phys Ther 2019;49(4):285. doi:10.2519/jospt.2019.8430
Combining the Power of IoT and Big Data to Unleash the Potential of Digital Oil Field
Authors: AlBar Abdullah , Asfoor Hasan , Goz Ahmad , Ansari Najmul
Published: April 2019

The objective of this paper is to demonstrate the process of unleashing the potential of digital oil fields by combining the power of Big Data platform with the Internet of Things (IoT). This new method enables efficient machine learning training utilizing Big Data and real-time scoring against mathematical models for predicting future outcomes.

Digital oil fields have a diverse set of IoT devices that measure important field metrics in real-time, such as downhole pressure, temperature and oil rate. A typical digital oil well is equipped with many equipment such as Multiphase Flow Meter, Electrical Submersible Pump, and Permanent Downhole Monitoring Systems. Those equipments have several sensors generating a huge volume of data every second.

In order to enable data scientists to analyze this huge amount of data streaming from various data sources, a data engineering pipeline was built. This pipeline combines data from various real-time and historical data repositories along with a master relational database in order to provide a consistent and clean analytics database for data scientists. This method saves data scientists the trouble of manually preparing and cleaning data from different datasets. Furthermore, by utilizing the analytics database cluster for machine learning, data scientists were able to use bigger data sets for training their models which can improve the accuracies of the models.

As part of the solution, a scoring engine was built which consumes real-time data feed from the digital oil fields and performs real-time predictions and scoring utilizing machine learning models.

The new architecture significantly improved the productivity of data scientists by allowing them to focus on building models and not to have to worry about data plumbing and deployment of the model to the field. Moreover by utilizing bigger data sets, models accuracies was improved considerably. Finally by integrating the models with IoT real-time data stream, field engineers can see and act on the models’ predictions in a timely manner.

This architecture and methodology combines different technology domains (IoT and Big Data) with unique solution to bring value to the Oil and Gas producing & production business function.
An Experimental Study of the Dynamic Mass Transfer Process During Carbonated Water Injection
Authors: Zou Jiandong , Liao Xinwei , Zhao Xiaoliang , Chen Zhiming , Mu Lingyu , Chu Hongyang , Wu Jiaqi , Zhang Zhen
Published: April 2019

Carbonated water injection (CWI) is a modified CO2 flooding method for enhanced oil recovery, which takes the both advantages of CO2 flooding and water injection and have attracted much attention recently. The objective of this study is to mimic the dynamic mass transfer process of carbonated water to "live" crude oil through a series of well-designed multi-contact tests.

In each test, carbonated water (CW) was brought into contact with live crude oil in a high-temperature and high-pressure PVT cell. Pressure changes during the test were observed and recorded. After equilibrium, all of the transferred carbonated water was taken out of the cell and the swelled oil was proceed to the next contact. The volume of water and liberated gas were measured. The oil swelling factor was also measured, which would verify the existence of moving interface between carbonated water and live crude oil. A total of 12 contact tests were performed.

It was observed that the pressure rapidly builds up immediately after the contact of carbonated water and live crude oil in the closed system. For the first contact, equilibrium pressure increased by 6.46MPa and for the last contact equilibrium pressure increased by 2.16Mpa. This result indicates a strong mutual interaction of carbonated water with live crude oil and be beneficial to maintain reservoir pressure. Due to large amount of CO2 transferred from carbonated water to the live crude oil, the swelling effect was quite obvious and a total swelling factor of 1.26 was obtained at the end of the experiments. The volume changes of carbonated water and live crude oil could be good evidence of the existence of moving interfaces during the dynamic mass transfer process. The other enhanced oil recovery mechanism by CWI such as viscosity reduction was also found in the tests.

The experimental results clearly indicate that the pressure buildup during the diffusion process originated from the CO2 dissolution from carbonated water and swelling of the oil phase. The partition coefficient is relevant to CO2 solubility in water and live crude oil. The tests vividly replicated the dynamic interactions between live crude oil in a closed system and the flowing carbonated water, in which the oil would be contacted by fresh carbonated water.
Automated Workflow for Unstructured Grid Reservoir Simulation
Authors: Ding Xiang Yang , Zawawi Ahmed S.
Published: April 2019

Machine learning based intelligent automation is developed by extending a prior workflow of unstructured grid reservoir simulation (Ding et al. 2015; Fung et al. 2014, 2013). Reservoir heterogeneity, geological internal boundary features and well geometry complexity are being taken into account to automatically detect well zone and focusing reservoir area by calculating the region-of-interests in the model and define cell spacing for grid coarsening and refinement in the reservoir. Automated workflow is demonstrated by using an unstructured grid reservoir simulation example.

Previously, an unstructured grid reservoir simulation workflow is introduced (Ding et al. 2015; Fung et al. 2014, 2013). One major component of the workflow is the near-well unstructured grid modeling framework which consists of a 2.5D unstructured PEBI grid engine and its input criteria, such as the locations of reservoir where grid coarsening and refinement are being applied in, along with respective cell spacing being allocated. The creation of such regions of interest and selection of cell spacing involve user's manual interaction, which is user-experience dependent and not intended to serve as a long term solution in the simulation workflow. This paper enhances this process by automatically detecting the target area in the reservoir by computing the convex hull of the well dataset or modified convex hull if concave exists in the dataset. The convex hull is used as the basis for reservoir polygon with defined cell spacing computed by cell density control scheme. The automation considers the heterogeneity and complexity of the reservoir, such as geological internal boundaries and complicated well geometry. The targeted locations in the reservoir cover necessary area for grid refinement with high density grids to capture the accurate flow dynamics near the well, whereas unimportant area in the reservoir are detected for being coarsened to avoid extreme large model size and long simulation runtime.

The result of this work enhances the unstructured grid modeling process by automatically computing the local reservoir areas for grid coarsening and refinement with respective grid density on the multi-level hierarchical grids, it avoids user's manual interaction, which is neither efficient nor user friendly. The automated workflow improves unstructured gridding efficiency and enhances user's simulation experience.

Utilizing emerging technology breakthrough such as machine learning is important towards a successful era of the Fourth Industrial Revolution (4IR), this work of workflow automation is an example of using machine learning for enhancing problem solving in reservoir simulation.
Characteristics and Influence Factors of the Middle-Lower Jurassic Tight Sandstone Reservoirs in the Taibei Sag, Turpan-Hami Basin
Authors: Si Xueqiang , Xu Yang , Wang Xin , Guo Huajun , Li Yazhe , Shan Xiang
Published: April 2019

Sandstone can be divided into many types with reference to permeability and porosity. Some scholars and researchers have established criteria to classify tight sandstone by using porosity and permeability. Sandstone with permeability less than 1mD and porosity less than 10% could be called tight sandstone. Exploration and development of tight sandstone gas has become a hot spot of oil and gas exploration (Dai J. et al., 2002) in China. Quite recently, tight sandstone gas reservoirs of different scales have been discovered in the middle-lower Jurassic of Taibei Sag in Turpan-Hami Basin. The purposes of this paperare to analyze the texture and composition of the middle-lower Jurassic tight sandstones, investigate diagenesis type and reveal the influence of diagenesis on reservoir quality.