Wyniki wyszukiwania - BazTech

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Distributed situation awareness in a demanding maritime operation: a case study of the subsea segment

Norstein E., Sharma A., Jungefeldt S., Nazir S.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2019

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Vol. 13. no. 4

811--822

EN

Maritime subsea operations have increased significantly in size and complexity during the last decades as a result of the advances in the offshore oil industry. Despite the fact that subsea operations can involve hundreds of personnel, working together with complex technology, limited research can be found regarding the operations in the available literature. This study aims to analyze a routine subsea operation using the Distributed Situation Awareness (DSA) framework and understand how the operators on board maintain their DSA in routine operations through a case study. In order to understand how the operation unfold in complex sociotechnical systems and how situational awareness (SA) is distributed across agents and artefacts, the theoretical framework of DSA can be useful as the focus is on the interactions at a systemic level. To achieve the research objectives, a combination of qualitative methods was utilized to illustrate DSA on board a subsea vessel. Initially an observation was conducted during a live subsea survey operation to capture the interaction between personnel and instruments. Furthermore, all observed personnel were subjected to retrospective interviews to elicit further knowledge of the operation. Finally, the data was analyzed according to the propositional network approach and Hierarchical Task Analysis (HTA). The result of this study portrays the SA of a subsea survey operation as propositional networks for the main phases identified in the HTA. The main findings of the study show a significantly difference in DSA among the Bridge personnel and personnel located in the Online Control Room (ONCR). Furthermore, it was found that the dynamic of the system allowed personnel to have different level of DSA without jeopardizing the overall operation. Finally, the summary of the findings provides a basic understanding of how a routine subsea survey operation unfolds.

2

Situation Awareness for Navigation Safety Control

Smirnova O.V.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2018

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Vol. 12, no. 2

383--388

EN

Situation awareness is the key element of the decision-making process. In navigation safety domain, monitoring, control, assessment of dangerous situations, support of operators of decision-making support system should be implemented in real time. In this paper we present the problem of situation awareness applied to navigation safety control. The paper considers existing models of situation awareness and ontology-based approach for maritime situation awareness. We introduce the situation concept using infons. Finally, we give an example how use these methods for design and creation of decision-support system for navigation safety control.

3

Secondary task and risky driving behavior: a test of the mediating effect of situation awareness

Hartono B., Gozali M.

International Journal of Occupational Safety and Ergonomics

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2015

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Vol. 21, No. 3

399--404

EN

A theoretical model is developed by using a contingency perspective to hypothesize the relationship between a secondary task and risky driving behavior. It is conjectured that the relationship between the two variables is mediated by situation awareness (SA). An experiment is designed and administered to provide empirical evidence. Thirty Indonesian students as subjects were required to carry out a driving assignment in a simulated environment. Empirical evidence suggests that SA provides a partial mediation effect towards the relationship between a secondary task and risky driving behavior. It is also found that a secondary task has a significant effect on risky driving behavior. The secondary task also becomes a significant explanation of SA. In addition, working memory capacity, experience and gender are found to have no significant impact towards SA.

4

Świadomość sytuacyjna węzła mobilnej sieci doraźnej

Głowacka J., Amanowicz M.

Biuletyn Wojskowej Akademii Technicznej

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2013

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Vol. 62, nr 3

95-109

PL

W artykule została przedstawiona potrzeba budowania świadomości węzłów w zakresie bezpieczeństwa oraz identyfikacja możliwych rozwiązań dotyczących tej tematyki. Następnie przedstawiono koncepcję mechanizmu budowania świadomości sytuacyjnej węzła oraz jego użycie w mobilnej sieci doraźnej wykorzystywanej w rozpoznaniu elektronicznym.

EN

The article depicts the needs for building the situational awareness of military MANET nodes and identifying of some possible solutions. The authors present novel approach for situational awareness assessment and trust-based mechanisms that increase the efficiency and security of communications in military radio reconnaissance system.

5

Podstawy tworzenia świadomości sytuacyjnej węzła wojskowej sieci MANET

Głowacka J., Amanowicz M.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2012

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nr 2-3

59-62

PL

Przedstawiono metody wnioskowania, umożliwiające ocenę rzeczywistości otaczającej węzeł. Zidentyfikowano potrzebę budowania świadomości sytuacyjnej węzła wojskowej sieci MANET, wskazano źródła danych, na podstawie których jest możliwe określenie poziomów zaufania do sąsiednich węzłów oraz przykłady rozwiązań wykorzystujących przedstawione metody wnioskowania.

EN

The article presents an overview of inference methods enabling evaluation of node's environment. The authors specify the needs for building the node's situational awareness and identify data sources used for calculations of trust metrics. They give some example applications of the presented inference methods.

6

Performance Measurement Model of Multi-Source Data Fusion Based on Network Situation Awareness

Guo L., Chen F., Gao C., Xong W.

Przegląd Elektrotechniczny

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2012

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R. 88, nr 7b

315--319

EN

In order to solve the problem of the energy optimization and assessment with situational awareness performance in the wireless sensor network, the function model is proposed based on the potential relationship between the trend of events and trend assumptions. Research from data integration, correlation analysis, events and prediction method, this paper analyzes the ability of the decision node to obtain and process information. It derivates the multi-sensor network situational awareness performance measurement formula, integrates network situation element, draws a trend calculation curve to achieve the network trend prediction. Experiments show that the proposed method can effectively predict the future trend of the network, the trend calculation results and time series analysis results is better than other network trend assessment algorithms.

PL

Zaproponowano model sieci bezprzewodowej czujników bazujący na potencjalnych zależnościach między trendami i zdarzeniami. Artykuł analizuje możliwość decyzji węzłów do realizacji przesyłu informacji. Eksperymenty potwierdziły, że metoda pozwala na efektywne prognozowanie trendu.

7

A fuzzy cognitive situation awareness for airport security

Furno D., Loia V., Veniero M.

Control and Cybernetics

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2010

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Vol. 39, no 4

960-982

EN

Situation awareness is a crucial factor in decision-making. It involves monitoring and identification of relationships among the state changing objects in collaborative dynamic environments. In the domain of airport security a critical need is to support security operators in real-time management of risky airside scenarios. This work relies on a fuzzy cognitive ontology-based approach to model situation awareness and introduces an agent-based distributed evaluation architecture to address the problem. Specifically, in order to model situation awareness this work instantiates and integrates two assessed ontological meta-models, Situation Theory Ontology (STO) and Saw Core Ontology (SAW), extended to cope with uncertainty when modeling relations among objects occurring in the addressed dynamic environment. Many task-oriented soft computing agents are in charge of monitoring the modeled situations while distributing the information evaluation process leads to achieving better real-time like performance.

8

Introduction of the Network Centric Warfare concept to Czech Armed Forces

Eichelmann P., Lukáš L.

Journal of Telecommunications and Information Technology

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2004

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nr 4

53-57

EN

One of the features determining the strength of troops is command and control. The quality of command and control is determined by the quality of the command and control systems (C2S). The Czech Armed Forces are developing tactical command and control systems (TC2S) for the Ground and Air Forces. The TC2S were a little bit separately developed. Now, we want to use the benefit of shared situation awareness. The concept of Network Centric Warfare is a solution of this problem. The integration of both TC2S's is its main objective. To apply this concept, separate C2S's of different units are integrated into one logical system, into one joint C2S. Thus it is possible to create the common operation picture for all units of the task force.