INTERACTION BETWEEN AGENTS IN ROUTINE, FAMILIAR AND UNFAMILIAR SITUATION

1996 ◽  
Vol 05 (01) ◽  
pp. 1-25 ◽  
Author(s):  
B. CHAIB-DRAA
Keyword(s):  
Multiagent System ◽  
Urban Traffic ◽  
Rule Based ◽  
Complex Tasks ◽  
Knowledge Based ◽  
Complex Interactions ◽  
Low Levels

A framework for designing a Multiagent System (MAS) in which agents are capable of coordinating their activities in routine, familiar, and unfamiliar situations is proposed. This framework is based on the Skills, Rules and Knowledge (S-R-K) taxonomy of Rasmussen. Thus, the proposed framework should allow agents to prefer the lower skill-based and rule-based levels rather than the higher knowledge-based level because it is generally easier to obtain and maintain coordination between agents in routine and familiar situations than in unfamiliar situations. The framework should also support each of the three levels because complex tasks combined with complex interactions require all levels. To permit agents to rely on low levels, a suggestion is developed: agents are provided with social laws so as to guarantee coordination between agents and minimize the need for calling a central coordinator or for engaging in negotiation which requires intense communication. Finally, implementation and experiments demonstrated, on some scenarios of urban traffic, the applicability of major concepts developed in this article.

scholarly journals Data-Driven Scenario Specification for AV–VRU Interactions at Urban Roundabouts

2021 ◽  
Vol 13 (15) ◽  
pp. 8281
Author(s):  
Andreas Keler ◽  
Patrick Malcolm ◽  
Georgios Grigoropoulos ◽  
Seyed Abdollah Hosseini ◽  
Heather Kaths ◽  
...  
Keyword(s):  
Autonomous Vehicle ◽  
Urban Traffic ◽  
Data Driven ◽  
Design Elements ◽  
Flow Simulations ◽  
Complex Interactions ◽  
3D Environments ◽  
Fictional Space ◽  
Motorized Vehicles ◽  
Simulator Test

Detailed specifications of urban traffic from different perspectives and scales are crucial for understanding and predicting traffic situations from the view of an autonomous vehicle (AV). We suggest a data-driven specification scheme for maneuvers at different design elements of the built infrastructure and focus on urban roundabouts in Germany. Based on real observations, we define classes of maneuvers, interactions and driving strategies for cyclists, pedestrians and motorized vehicles and define a matrix for merging different maneuvers, resulting in more complex interactions. The sequences of these interactions, which partially consist of explicit communications, are extracted from real observations and adapted into microscopic traffic flow simulations. The simulated maneuver sequences are then visualized in 3D environments and experienced by bicycle simulator test subjects. Using trajectory segments (in fictional space) from two conducted simulator studies, we relate the recorded movement patterns of test subjects with observed cyclists in reality.

scholarly journals Configurational Analysis of the Driving Paths of Chinese Digital Economy Based on the Technology–Organization–Environment Framework

SAGE Open ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 215824402110545
Author(s):  
Shuangying Chen ◽  
Qiyue Li ◽  
Bo Lei ◽  
Na Wang
Keyword(s):  
Economic Development ◽  
Qualitative Comparative Analysis ◽  
Digital Economy ◽  
Necessary Condition ◽  
Digital Competence ◽  
Configurational Analysis ◽  
Complex Interactions ◽  
Toe Framework ◽  
Low Levels ◽  
Using Data

The purpose of this study was to examine the combinations of factors driving the digital economy and their configurational pathways, based on the Technology–Organization–Environment (TOE) framework. Using data on 31 Chinese provinces, the study integrated the TOE framework with Fuzzy-set Qualitative Comparative Analysis (fsQCA) to examine the digital economy. The results indicate that (a) firms’ digital competence is a necessary condition for the development of the digital economy; (b) four pathways drive high levels of digital economic development and three pathways lead to low levels of digital economic development; and (c) these pathways indicate asymmetry between high and low levels of digital economic development. The findings enhance understanding of the complex interactions of multiple factors driving the digital economy. They also yield policy recommendations for the development of the digital economy.

Towards a Framework for Evaluating and Reporting Hansen Solubility Parameters: Applications to Nano and Micron Scale Particle Dispersions

2021 ◽  
Author(s):  
Shalmali Bapat ◽  
Stefan O. Kilian ◽  
Hartmut Wiggers ◽  
Doris Segets
Keyword(s):  
Continuous Phase ◽  
Solubility Parameters ◽  
Hansen Solubility Parameters ◽  
Ranking List ◽  
Knowledge Based ◽  
Complex Interactions ◽  
Analytical Centrifugation ◽  
Scale Particle ◽  
Hansen Solubility

<p>A thorough understanding of complex interactions within particulate systems is a key for knowledge-based formulations. Hansen solubility parameters (HSP) are widely used to assess the compatibility of the dispersed phase with the continuous phase. At present, the determination of HSP is often based on a liquid ranking list obtained by evaluating a pertinent dispersion parameter using only one pre-selected characterization method. Furthermore, one cannot rule out the possibility of subjective judgment especially for liquids for which it is difficult to decipher the compatibility or underlying interactions. As a result, the end value of HSP might be of little or no information. To overcome these issues, we introduce a generalized technology-agnostic combinatorics-based approach. We discuss the principles of the approach and the implications of evaluating and reporting particle HSP values. We demonstrate the approach by using SiN<sub>x</sub> particles. We leverage the analytical centrifugation data to evaluate stability trajectories of SiN<sub>x</sub> dispersions in various liquids to deduce particle-liquid compatibility. </p>

Holocene Environments in Northeast Africa

2021 ◽  
pp. 62-78
Author(s):  
Martin Williams
Keyword(s):  
Late Holocene ◽  
Flood Plain ◽  
Low Flow ◽  
Archaeological Record ◽  
Human Occupation ◽  
Complex Interactions ◽  
Maar Lake ◽  
Low Levels ◽  
White Nile ◽  
Ne Africa

This chapter provides an overview of the geography, hydrology, and climate of NE Africa, with particular reference to the complex interactions between river regime, climate, the biota, and human settlement. During the Early (11.7–8.2 ka) and Middle Holocene (8.2–4.2 ka) the climate was far less arid than today across the Nile basin, including Nubia, albeit with sporadic dry phases. Climatic desiccation set in during the Late Holocene (4.2 ka to present), with minor wet phases. Intervals when the Nile flow regime was apparently shifting from high to low flow and flood plain incision have provisional ages of ca. 8.15–7.75 ka, 6.4–6.15 ka, 5.7–5.45 ka, 4.7–4.25 ka, 3.35–2.9 ka, 2.8–2.55 ka, and 1600 ce. In the Kerma area of Nubia there were two periods of relatively dense human occupation in the earlier part of the Holocene from 10 ka to 8 ka and from 7 ka to 6 ka, with two significant gaps in the archaeological record at 7.5–7.1 ka and 6.0–5.4 ka, that coincided with very low levels in Lake Challa, a maar lake on the eastern flank of Mt Kilimanjaro, near the Ugandan headwaters of the White Nile.

Engineering of Experience Based Trust for E-Commerce

2010 ◽  
pp. 342-367 ◽  
Author(s):  
Zhaohao Sun ◽  
Jun Han ◽  
Dong Dong ◽  
Shuliang Zhao
Keyword(s):  
Artificial Intelligence ◽  
Sustainable Development ◽  
Research And Development ◽  
Multiagent Systems ◽  
System Architecture ◽  
Intelligent Systems ◽  
Multiagent System ◽  
Theoretical Foundation ◽  
Knowledge Based ◽  
Trust Inference

Trust is significant for sustainable development of e-commerce and has received increasing attention in e-commerce, multiagent systems (MAS), and artificial intelligence (AI). However, little attention has been given to the theoretical foundation and intelligent techniques for trust in e-commerce from a viewpoint of intelligent systems and engineering. This chapter will fill this gap by examining engineering of experience-based trust in e-commerce from the viewpoint of intelligent systems. It looks at knowledgebased trust, inference-based trust and their interrelationships with experience-based trust. It also examines scalable trust in e-commerce. It proposes a knowledge based model of trust in e-commerce and a system architecture for METSE: a multiagent system for experience-based trust in e-commerce. The proposed approach in this chapter will facilitate research and development of trust, multiagent systems, e-commerce and e-services.

scholarly journals Sexual Violence Perpetration Within Intimate Relationships: An I3 Model Analysis of the Effects of Sexual Violence Victimization and Psychological Flexibility

Sexual Abuse ◽  
2019 ◽  
pp. 107906321987717
Author(s):  
Jessica L. Grom ◽  
Cory Crane ◽  
Ruschelle M. Leone ◽  
Dominic J. Parrott ◽  
Christopher Eckhardt
Keyword(s):  
Sexual Violence ◽  
Intimate Relationships ◽  
Partner Violence ◽  
Psychological Flexibility ◽  
Relative Strength ◽  
Violence Victimization ◽  
Inhibiting Effect ◽  
Complex Interactions ◽  
Ipv Perpetration ◽  
Low Levels

The I3 Model posits that intimate partner violence (IPV) is determined by the relative strength of instigatory, impellance, and inhibitory factors. Although much research has examined nonsexual IPV, few studies have used the I3 Model to examine sexual IPV. This study investigated the effects of sexual IPV victimization (an impellor) and psychological flexibility (an inhibitor) on sexual IPV perpetration within a dyadic framework. Participants nested within 617 intimate couples completed measures of psychological flexibility and sexual IPV perpetration and victimization. Results showed that Actor IPV victimization was positively and Actor psychological flexibility was negatively associated with Actor IPV perpetration. Among those who experienced low levels of IPV victimization, psychological flexibility inhibited IPV perpetration. This inhibiting effect did not extend to Actors who experienced high levels of IPV victimization. Findings highlight the complex interactions between I3 factors and support continued dyadic examination of IPV perpetration etiology.

Software Interface Evaluation: Modeling of Human Error

1993 ◽  
Vol 37 (5) ◽  
pp. 453-455 ◽  
Author(s):  
S. J. Wright ◽  
S. J. Packebush ◽  
D. A. Mitta
Keyword(s):  
Human Error ◽  
Interface Element ◽  
Trial And Error ◽  
Rule Based ◽  
High Frequencies ◽  
Software Interface ◽  
Knowledge Based ◽  
Cognitive Levels ◽  
Graphics Software ◽  
And Task

The purpose of this study was to use a human error model to evaluate a commercially available Macintosh-based graphics application based upon the frequencies and types of mistakes occurring during users' performance of designated tasks. The occurrence of high frequencies of knowledge-based and rule-based mistakes during the learning of an interface element would indicate that the element requires evaluation and possible redesign. This study involved five participants, all of whom were students at Texas A&M University. The participants were experienced Macintosh users with no experience using Macintosh graphics software. The graphics environment of interest was MacDraw II® 1.0 Version 2 (Schutten, Goldsmith, Kaptanoglu, and Spiegel, 1988). Ten drawings created with the program were used to examine participants' cognitive levels and types of errors made throughout the process of familiarizing themselves with this program. The first drawing was created to exemplify simple figures created with the graphics tools in the program to illustrate shading. The second through tenth drawings incorporated these figures in several arrangements. All drawings incorporated eight tools (or tasks), and each tool was used only once in each drawing. The results indicated significant differences in frequencies of error types, frequencies of errors between tasks and frequencies of errors between trials. There were also interactions between trial and error, and task and error.

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