A Technical Approach to Safe Mode Management for a Smooth Transition from Automatic to Manual Drilling

2021 ◽  
Author(s):  
Eric Cayeux ◽  
Rodica Mihai ◽  
Liv Carlsen ◽  
Morten Ørevik ◽  
Kjartan Birgisson ◽  
...  
Keyword(s):  
Transition State ◽  
Situation Awareness ◽  
Smooth Transition ◽  
Human Operator ◽  
Manual Control ◽  
Construction Operations ◽  
System Failures ◽  
Autonomous Function ◽  
Current State ◽  
The One

Abstract Unexpected situations and system failures during well construction operations are always possible. In the context of drilling automation, or even autonomous drilling, proper automatic management of these situations is of critical importance as the situation awareness of the human operator is very much reduced. The proper management of the transition between automatic and manual modes is necessary to improve the safety of automation solutions. An important characteristic of drilling automation solutions is their ability to cope with unexpected situations. This also encompasses, placing the drilling system in a state that is easy and intuitive for the human operator when manual control is required. Our approach to safe mode management is dependent on a good state estimation of the current conditions of the process. If for any reason, manual control must be regained, then the automated function itself triggers the necessary actions that will ensure a stable current state. In case of a drilling problem or a system failure, the human operator may have to regain control when the context might be totally different from the one left when the automation or autonomous function was enabled. It may even be a different human operator that has to take control, if a crew change has taken place. To make the transition from the automated/autonomous context to manual control, the automation/autonomous system sets the drilling machines in a so-called safe transition state. A safe transition state is one for which leaving the current setpoints of drilling machines untouched for a reasonable amount of time, will not immediately jeopardize the safety of the drilling operation. A safe transition state is contextual as it is not necessarily the same sequence of actions that must be performed to reach the safe transition state every time. The novel safe modes management method is integrated into existing drilling automation solutions. In a drilling automation context, the situation awareness of the human operator is considerably reduced as the automated functions control the process and the human operator is not actively driving the drilling machines. Without active safe mode management, there is a risk that drilling automation solutions may lead to serious situations as the driller may be totally unprepared to regain control in the middle of a critical situation. When it is needed to return to manual mode in the middle of the execution of an automatic procedure, an adequate procedure is executed. The choice of the procedure and its parameters depend on the current state of the process and system.

The Development of Agritourism in the Podkarpackie Voivodeship in the Light of International and National Conditions

2017 ◽  
Vol 13 ◽  
pp. 244-261
Author(s):  
Mariola Tracz ◽  
Małgorzata Bajgier-Kowalska ◽  
Radosław Uliszak
Keyword(s):  
Development Strategy ◽  
Current State ◽  
Central Statistical ◽  
Central Statistical Office ◽  
Tourism Resources ◽  
The One ◽  
The Impact ◽  
District Offices ◽  
Socio Economic Factors

Podkarpackie Voivodeship is one of the regions of Poland in which the number of agritourism entities is very high. Therefore tourism plays a significant role in its development strategy. The aim of the paper is to identify the current state of agritourism and the changes that have occurred in the region in the years 2000–2016. Specific objectives are to determine the distribution of agritourism farms and their offer, together with a comprehensive analysis of the environmental and socio-economic factors, as well as the impact of the Slovak-Ukrainian border. The report was developed on the statistical materials from the Polish Central Statistical Office, Podkarpackie Agricultural Advisory Centre in Boguchwała and data collected from municipalities and district offices that is published on their websites, as well as through interviews with 100 owners of agritourism farms in the Podkarpackie Voivodeship. The research has shown, on the one hand, the decline in the number of farms in the region and, on the other hand, the increase in the diversity of the tourist offer of these entities. Distribution of agritourism farms is closely linked to the attractiveness of natural environment and quality of secondary tourism resources. Traditional agritourism has not yet fully used its countryside, as well as cross-border advantages of its location.

scholarly journals Electrically turning periodic structures in cholesteric layer with conical–planar boundary conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Oxana Prishchepa ◽  
Mikhail Krakhalev ◽  
Vladimir Rudyak ◽  
Vitaly Sutormin ◽  
Victor Zyryanov
Keyword(s):  
Boundary Conditions ◽  
Periodic Structures ◽  
Cholesteric Liquid Crystal ◽  
Growth Direction ◽  
Smooth Transition ◽  
Defect Structures ◽  
Optical Cell ◽  
Elastic Continuum ◽  
The One ◽  
Experimental Findings

AbstractElectro-optical cell based on the cholesteric liquid crystal is studied with unique combination of the boundary conditions: conical anchoring on the one substrate and planar anchoring on another one. Periodic structures in cholesteric layer and their transformation under applied electric field are considered by polarizing optical microscopy, the experimental findings are supported by the data of the calculations performed using the extended Frank elastic continuum approach. Such structures are the set of alternating over- and under-twisted defect lines whose azimuthal director angles differ by $$180^\circ$$ 180 ∘ . The $$U^+$$ U + and $$U^-$$ U - -defects of periodicity, which are the smooth transition between the defect lines, are observed at the edge of electrode area. The growth direction of defect lines forming a diffraction grating can be controlled by applying a voltage in the range of $$0\le \, V \le 1.3$$ 0 ≤ V ≤ 1.3  V during the process. Resulting orientation and distance between the lines don’t change under voltage. However, at $$V>1.3$$ V > 1.3  V $$U^+$$ U + -defects move along the defect lines away from the electrode edges, and, finally, the grating lines collapse at the cell’s center. These results open a way for the use of such cholesteric material in applications with periodic defect structures where a periodicity, orientation, and configuration of defects should be adjusted.

Summary of the current state of the pathogenesis of glaucoma

1927 ◽  
Vol 23 (8) ◽  
pp. 839-845
Author(s):  
V. P. Roshchin
Keyword(s):  
Single Case ◽  
Disease Process ◽  
The Other ◽  
Medical Attention ◽  
Blind People ◽  
Current State ◽  
Constant State ◽  
The One

The problem of glaucoma has, for many reasons, occupied and continues to occupy a prominent place in the ophthalmic press. It is enough to recall that 19% of all blind people owe their misfortune to glaucoma to understand why interest in this affliction has never faded among ophthalmologists. Furthermore, no ophthalmologist is quite sure that a certain method of treatment, even if the patient has timely applied for medical attention, can definitely prevent a sad outcome in every single case. This plus the absence of a unified and correct view of the essence of glaucoma keeps ophthalmologists in a constant state of flux, constantly striving to uncover the hidden springs of the disease process on the one hand, and to find a more radical means to combat it on the other.

Jan Hardy versus Likwidator. Comics als Medien der gesellschaftlichen Spaltung Polens

2021 ◽  
Vol 2021 (1) ◽  
pp. 43-62
Author(s):  
Agnieska Balcerzak
Keyword(s):  
Second World War ◽  
Culture War ◽  
Current State ◽  
Memory Culture ◽  
History Of ◽  
Projection Surface ◽  
The Republic ◽  
Political Spectrum ◽  
The One ◽  
Second World

This article at the intersection of cultural studies of popular and memory culture deals with the genre of comics as an identity-forming (protest) medium and projection surface for the ideologised “culture war” between traditionalists and modernists in contemporary Poland. The analysis focuses on two historical comics that combine facts and imaginary and refer back to the Second World War, the communist period and the recent history of the Republic of Poland after 1989. The article juxtaposes two title heroes and their comic worlds, which represent opposite ends of the political spectrum and reveal the problem areas of Poland’s dividedness along the underlying canon of values and symbolic worlds: Jan Hardy, the national-conservative “cursed soldier”, and Likwidator, the relentless “anarcho-terrorist”. The characters and their adventures exemplify fundamental memory cultural, religious, nationalist and emancipatory discourses in Poland today. The focus of the analysis lies on the creation context and the (visual) language with its narrative-aesthetic intensifications, which illuminate Poland’s current state of conflict between national egoism and traditional “cultural patriotism” on the one hand and liberal value relativism with its progressive-emancipatory rhetoric on the other.

Buoyancy Force on a Plain or Perforated Portion of a Pipe

2021 ◽  
Author(s):  
Eric Cayeux ◽  
Sigmund Stokka
Keyword(s):  
Buoyancy Force ◽  
Construction Operations ◽  
Drilling Operation ◽  
Drill Stem ◽  
Shallow Wells ◽  
Plain Tube ◽  
End Caps ◽  
Drag Models ◽  
The One ◽  
Perforated Tube

Abstract Torque and drag models have been used for many decades to calculate tensions and torques along drill-strings, casing strings and liner strings. However, when applied to sand-screens, it is important to check that all the initial hypotheses used for torque and drag calculations are still valid. In particular, it should be checked whether the buoyancy force on a perforated tube may differ from the one applied to a plain tube. The buoyancy force applied on a pipe, contributes to the sum of efforts at the contact between the pipe and the borehole and therefore influences torque and drag calculations. This contact force is local and should account for localized effects as well as the material internal forces, torques and moments on each side of the contact. As the buoyancy force is the result of the gravitational component of the pressure gradient on the surface of the pipe that is in contact with the fluid, the presence of holes in the pipe also influences the buoyancy force. When applied to a portion of a pipe, buoyancy does not have contributions at the end caps of that portion of the drill-stem since these end caps are not in contact with the fluid, except at positions with a change of diameter. Therefore, one shall be cautious when calculating the local buoyancy force either on a plain or a perforated tube. The paper describes how to calculate the local buoyancy force on a portion of a drill-stem by application of the Gauss theorem accounting for the necessary corrections arising from the end caps not being exposed to the fluid. An experimental setup has been built to verify that the tension inside a pipe subject to buoyancy does follow the derived mathematical calculations. With complex well construction operations, for instance during extended reach drilling or when drilling very shallow wells with high kick-off rates, the slightest error in torques and drag calculations may end up in jeopardizing the chance of success of the drilling operation. It is therefore important to check that all initial calculation hypotheses are still valid in those contexts and that for instance, sand-screens may be run in hole safely after a successful drilling operation.

ARESIBO HORIZON 2020 EUROPEAN RESEARCH PROJECT – ENRICHED SITUATION AWARENESS FOR BORDER SURVEILLANCE

2021 ◽  
Vol 17 (1) ◽  
pp. 247-255
Author(s):  
Konstantinos CHARISI ◽  
Andreas TSIGOPOULOS ◽  
Spyridon KINTZIOS ◽  
Vassilis PAPATAXIARHIS
Keyword(s):  
Augmented Reality ◽  
Situation Awareness ◽  
User Interfaces ◽  
Border Security ◽  
Multiple Sources ◽  
Horizon 2020 ◽  
Research And Innovation ◽  
Current State ◽  
Available Information ◽  
User Friendly

Abstract. The paper aims to introduce the ARESIBO project to a greater but targeted audience and outline its main scope and achievements. ARESIBO stands for “Augmented Reality Enriched Situation awareness for Border security”. In the recent years, border security has become one of the highest political priorities in EU and needs the support of every Member State. ARESIBO project is developed under HORIZON 2020 EC Research and Innovation program and it is the joint effort of 20 participant entities from 11 countries. Scientific excellence and technological innovation are top priorities as ARESIBO enhances the current state-of-the-art through technological breakthroughs in Mobile Augmented Reality and Wearables, Robust and Secure Telecommunications, Robots swarming technique and Planning of Context-Aware Autonomous Missions, and Artificial Intelligence (AI), in order to implement user-friendly tools for border and coast guards. The system aims to improve the cognitive capabilities and the perception of border guards through intuitive user interfaces that will help them acquire an improved situation awareness by filtering the huge amount of available information from multiple sources. Ultimately, it will help them respond faster and more effectively when a critical situation occurs.

Human Operator Decision-Making in Manual Control

1969 ◽  
Vol 10 (2) ◽  
pp. 41-47 ◽  
Author(s):  
Harry Cohen ◽  
William Ferrell
Keyword(s):  
Decision Making ◽  
Human Operator ◽  
Manual Control

scholarly journals The General Characteristics of Extremism and Analysis of the Current State of the Fight Against Extremist Crimes

Legal Concept ◽  
2020 ◽  
pp. 13-20
Author(s):  
Svyatoslav Biryukov ◽  
Mikhail Bobovkin ◽  
Mikhail Shmatov
Keyword(s):  
The State ◽  
Law Students ◽  
Teaching Staff ◽  
General Description ◽  
Public Response ◽  
The Public ◽  
Current State ◽  
Quality Of Protection ◽  
Natural Tendency ◽  
The One

Introduction: the Constitution of the Russian Federation and other Federal laws in this country guarantee the protection of the population against crimes, including criminal attacks of extremist orientation. However, recently there has been a steady trend towards an increase in the number of committed crimes of extremist orientation, which determines the need to improve the quality of protection of individual rights, and along with them, the constitutional framework of the state, since demonstratively committed extremist crimes cause a great public response and contribute to the undermining of state power. The crime statistics show a significant increase in the number of extremist crimes; there is a natural tendency to spread the ideas of extremism among the population. Unfortunately, only some of the extremist crimes are counted as such in the official statistics. The crimes of this category are often registered without taking into account the qualifying feature – the motive of national, racial, religious hatred or enmity, and, as a result, are not considered in the group of crimes of extremism. Another reason for not fully accounting for these crimes is their latency: not all victims of such criminal actions declare this for various objective and subjective reasons. The public danger of crimes of the group in question is due, on the one hand, as usual, to their group character, and on the other hand, such illegal actions incite interethnic and other hatred, which is very harmful in the context of the efforts being made to build a civil society. Currently, the legislative bodies do not clearly pay enough attention to the organization of counteraction to extremism as an anti-social phenomenon. For example, over the past ten years, the problems of countering extremism have been resolved through the adoption of only four normative legal acts of a national nature. In this regard, the authors aim to give a general description of such a phenomenon as extremism and the state of the fight against such crimes. Methods: the methodological framework for this research is a set of methods of scientific knowledge, among which the main ones are the methods of information processing and logical analysis, synthesis, induction, deduction and generalization. Results: the authors’ content of the general characteristics of extremism and analysis of the current state of the fight against crimes of extremist orientation actualizes the problem of the need to improve the state of the theoretical base, prepare recommendations based on it, which would contribute to improving the efficiency of the state authorized bodies in the fight against various manifestations of extremism, and primarily in order to solve and investigate crimes of extremist orientation. Conclusions: the study has given the general characteristics of extremism and the analysis of the current state of the fight against extremist crimes in order to inform law students, and the teaching staff of law schools and practitioners to better understand the characteristics and dangers of this phenomenon.

scholarly journals Inscriptiones Graecae Between Present and Future

Axon ◽  
2019 ◽  
Author(s):  
Peter Funke
Keyword(s):  
The Other ◽  
Future Perspectives ◽  
Workshop Report ◽  
Current State ◽  
Other Hand ◽  
Geographic Regions ◽  
The One

In the first part of my ‘workshop report’, I will provide information about the current state of the epigraphical editions of the Inscriptiones Graecae. Subsequently, I will focus on the plans for the upcoming years. In this context, questions pertaining to epigraphic research in new geographic regions, on the one hand, and the revision of past editions, on the other hand, are paramount. In the second part of my report, I will outline the current state and future perspectives of the digitisation of the IG.

scholarly journals Using models of energy consumption from influencing factors to assess the current state and energy efficiency forecasting

2020 ◽  
Vol 220 ◽  
pp. 01024
Author(s):  
Deniz Moroz ◽  
Nadzeya Hruntovich ◽  
Aliaksei Kapanski ◽  
Yauhen Shenets ◽  
Mikhail Malashanka ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Influencing Factors ◽  
Factor Model ◽  
Energy Resource ◽  
Energy Resources ◽  
Simple Relationship ◽  
Production Program ◽  
Current State ◽  
The One ◽  
The Mathematical Model

A complex of tasks that can be solved using mathematical models of the dependence of consumed energy resources on influencing factors are considered in the article. The main type of model for industrial consumers with a simple relationship between energy and technology, is the one-factor model “consumed energy resource-volume of output”. For industrial consumers with a complex relationship between energy and technology, the mathematical model of the dependence of energy resources on technology is determined by several factors. Methods for assessing the current state of energy efficiency, as well as predicting it for the future in the context of the introduction of energy saving measures and changes in the production program were proposed.

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