Modeling the Interaction with Automated Vehicles in Road Bottleneck Scenarios

Author(s):  
Michael Rettenmaier ◽  
Klaus Bengler

An important factor for designing the interaction of automated vehicles (AVs) with surrounding road users is the capability of the human communication partner, especially the perception, processing and response. As these processes need time, there is a latest moment the AV has to define its communication strategy. The present work analyzes the situation when an AV negotiates the right of way to a simultaneously oncoming human driver in a road bottleneck scenario. We modeled the sequence of human tasks when perceiving and processing the AV’s information and the time needed to respond to it. The interaction model results in a latest moment after which a comfortable interaction can no longer be initiated. Comparing the model with the data of an underlying study indicates the appropriate modeling of the time required for communication. A later start of communication leads to inefficient traffic flow and worse subjective ratings of the AV’s communication.

2015 ◽  
Vol 63 (3) ◽  
Author(s):  
Alexander Stoff ◽  
Hermann Winner

AbstractThis paper analyzes and evaluates alternative options for action and earliest possible dates for intervention for an automated safety function to avoid or mitigate collisions in priority situations in which the right of way regulations are violated by the crossing road users. Based on a simulation of the collision avoidance strategies, the potential safety benefits could be predicted.


Author(s):  
Jonathan Rose

The Literary Agenda is a series of short polemical monographs about the importance of literature and of reading in the wider world and about the state of literary education inside schools and universities. The category of 'the literary' has always been contentious. What is clear, however, is how increasingly it is dismissed or is unrecognised as a way of thinking or an arena for thought. It is sceptically challenged from within, for example, by the sometimes rival claims of cultural history, contextualized explanation, or media studies. It is shaken from without by even greater pressures: by economic exigency and the severe social attitudes that can follow from it; by technological change that may leave the traditional forms of serious human communication looking merely antiquated. For just these reasons this is the right time for renewal, to start reinvigorated work into the meaning and value of literary reading. For the Internet and digitial generation, the most basic human right is the freedom to read. The Web has indeed brought about a rapid and far-reaching revolution in reading, making a limitless global pool of literature and information available to anyone with a computer. At the same time, however, the threats of censorship, surveillance, and mass manipulation through the media have grown apace. Some of the most important political battles of the twenty-first century have been fought--and will be fought--over the right to read. Will it be adequately protected by constitutional guarantees and freedom of information laws? Or will it be restricted by very wealthy individuals and very powerful institutions? And given increasingly sophisticated methods of publicity and propaganda, how much of what we read can we believe? This book surveys the history of independent sceptical reading, from antiquity to the present. It tells the stories of heroic efforts at self-education by disadvantaged people in all parts of the world. It analyzes successful reading promotion campaigns throughout history (concluding with Oprah Winfrey) and explains why they succeeded. It also explores some disturbing current trends, such as the reported decay of attentive reading, the disappearance of investigative journalism, 'fake news', the growth of censorship, and the pervasive influence of advertisers and publicists on the media--even on scientific publishing. For anyone who uses libraries and Internet to find out what the hell is going on, this book is a guide, an inspiration, and a warning.


2021 ◽  
Vol 13 (15) ◽  
pp. 8396
Author(s):  
Marc Wilbrink ◽  
Merle Lau ◽  
Johannes Illgner ◽  
Anna Schieben ◽  
Michael Oehl

The development of automated vehicles (AVs) and their integration into traffic are seen by many vehicle manufacturers and stakeholders such as cities or transportation companies as a revolution in mobility. In future urban traffic, it is more likely that AVs will operate not in separated traffic spaces but in so-called mixed traffic environments where different types of traffic participants interact. Therefore, AVs must be able to communicate with other traffic participants, e.g., pedestrians as vulnerable road users (VRUs), to solve ambiguous traffic situations. To achieve well-working communication and thereby safe interaction between AVs and other traffic participants, the latest research discusses external human–machine interfaces (eHMIs) as promising communication tools. Therefore, this study examines the potential positive and negative effects of AVs equipped with static (only displaying the current vehicle automation status (VAS)) and dynamic (communicating an AV’s perception and intention) eHMIs on the interaction with pedestrians by taking subjective and objective measurements into account. In a Virtual Reality (VR) simulator study, 62 participants were instructed to cross a street while interacting with non-automated (without eHMI) and automated vehicles (equipped with static eHMI or dynamic eHMI). The results reveal that a static eHMI had no effect on pedestrians’ crossing decisions and behaviors compared to a non-automated vehicle without any eHMI. However, participants benefit from the additional information of a dynamic eHMI by making earlier decisions to cross the street and higher certainties regarding their decisions when interacting with an AV with a dynamic eHMI compared to an AV with a static eHMI or a non-automated vehicle. Implications for a holistic evaluation of eHMIs as AV communication tools and their safe introduction into traffic are discussed based on the results.


2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Peixin Liu ◽  
Kaiwen Chen ◽  
Shuo Wang ◽  
Chunzhuo Hua ◽  
Hongtao Zhang ◽  
...  

Abstract Background Ankle-subtalar joint complex instability is not uncommonly presented in the clinic, but symptoms and signs similar to other conditions can easily lead to its misdiagnosis. Due to the lack of appropriate animal models, research on ankle-subtalar joint complex instability is limited. The aims of the present study were to establish an animal model of ankle-subtalar joint complex instability in mice and to explore its relationship with post-traumatic osteoarthritis (PTOA). Methods Twenty-one male C57BL/6J mice were randomly divided into three groups: SHAM group (sham surgery group), transected cervical ligament + anterior talofibular ligament (CL+ATFL) group, and transected cervical ligament + deltoid ligament (CL+DL) group. Two weeks after surgery, all mice underwent cage running training. Balance beam and gait tests were used to evaluate the changes in self-movement in the mice after ankle-subtalar ligament injury. Micro-CT and histological staining were used to evaluate the progress of PTOA. Results Compared with the SHAM group, balance and gait were affected in the ligament transection group. Twelve weeks after surgery, the time required to cross the balance beam in the CL+ATFL group was 35.1% longer and the mice slipped 3.6-fold more often than before surgery, and the mean step length on the right side was 7.2% smaller than that in the SHAM group. The time required to cross the balance beam in the CL+DL group was 32.1% longer and the mice slipped 3-fold more often than prior to surgery, and the average step length on the right side was 5.6% smaller than that in the SHAM group. CT images indicated that 28.6% of the mice in the CL+DL group displayed dislocation of the talus. Tissue staining suggested that articular cartilage degeneration occurred in mice with ligament transection 12 weeks after surgery. Conclusions Transected mice in the CL+ATFL and CL+DL groups displayed mechanical instability of the ankle-subtalar joint complex, and some mice in the CL+DL group also suffered from talus dislocation due to ligament injury leading to loss of stability of the bone structure. In addition, as time progressed, the articular cartilage displayed degenerative changes, which affected the ability of animals to move normally.


Author(s):  
Ted Azarmi ◽  
Florian Eisele ◽  
Christine Haecker

<p class="MsoNormal" style="text-align: justify; margin: 0in 0.5in 0pt; mso-pagination: none;"><span style="font-size: 10pt; mso-bidi-font-size: 12.0pt;"><span style="font-family: Times New Roman;">The objective of this case is to teach and initiate a classroom discussion about the optimal market timing for the sale of a mid-cap privately held firm.<span style="mso-spacerun: yes;">&nbsp; </span>The discussion is facilitated by a real world case example that focuses on the sale of a Little Rock, AK based plastic injection molding company with approximately $20 million in revenues.</span></span></p><p class="MsoNormal" style="text-align: justify; margin: 0in 0.5in 0pt; mso-pagination: none;"><span style="font-size: 8pt;"><span style="font-family: Times New Roman;">&nbsp;</span></span></p><p class="MsoNormal" style="text-align: justify; margin: 0in 0.5in 0pt; mso-pagination: none;"><span style="font-size: 10pt; mso-bidi-font-size: 12.0pt;"><span style="font-family: Times New Roman;">Theoretical and practical issues central to receiving maximum price in relation to selling at the right time are addressed.<span style="mso-spacerun: yes;">&nbsp; </span>Considered are the desired time to close the deal from the owner&rsquo;s point of view, the time required for successful completion of the sale process, business conditions in this industry, firm-specific business conditions, and ability of agents to time this market.<span style="mso-spacerun: yes;">&nbsp; </span></span></span></p><p class="MsoNormal" style="text-align: justify; margin: 0in 0.5in 0pt; mso-pagination: none;"><span style="font-size: 8pt;"><span style="font-family: Times New Roman;">&nbsp;</span></span></p><p class="MsoNormal" style="text-align: justify; margin: 0in 0.5in 0pt; mso-pagination: none;"><span style="font-size: 10pt; mso-bidi-font-size: 12.0pt;"><span style="font-family: Times New Roman;">This case also discusses various reasons for the sale of private companies and the effect of respective sale motives on the placement of these firms.<span style="mso-spacerun: yes;">&nbsp; </span>Principally, the retirement decision by the owners of small privately held firms as the most frequent reason for the sale of these companies is explored.</span></span></p>


2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Suluri Suluri

This paper examines various social problems in society often occur. In interacting with the community, like it or not, like it or not, intentionally or unintentionally it often happens that the offense and hurt hurt. The Prophet Muhammad as the messenger of Allah who was sent to perfect morality has set examples in navigating life in the world, especially in social matters. Evidently Rosul SAW has built a civil society in Medina. The examples of the Prophet Muhammad who I adopted in this article are the prohibition of whispering together without regard to the third, the ethics of visiting, greeting, giving the right of road users and giving rights to neighbors. From these various themes, it is expected to be a learning so that in interacting with fellow human beings, a Muslim always prioritizes morality.


Author(s):  
Agung Wicaksono

<p>Communication strategy is the way to help the speakers when facing difficulties in communication using English as a second language. This case study, at the first year students of English Department, aims to know the most frequent students’ strategies to communicate in speaking activity in speaking class. It is  found that thirteen communication strategies were used by the students in speaking English class, but not all of the communication strategies were used in every conversation, but only certain communication strategy was used. It depends on  the materials difficulties. Furhermore, the most frequent  communication strategies is stalling or time gaining strategy. As they need some time to think and then continue talking after they find the right words they need to communicate. This findings is in line with the propossed theory stated that communication strategy is defined as a systematic technique employed by a speaker to express his or her meaning when facing certain difficulties in communication.</p>


In the framework of this work, the main regulatory documents on this topic are analyzed. It is noted that the qualification requirements are not identical to the presence of a document confirming the right to drive a vehicle. Qualification requirements are the requirements for the knowledge, skills, and professional skills of the driver. A legal conflict was established for drivers who received a driver’s license earlier than 12/12/2014: the presence of a Russian national driver’s license of the corresponding category makes it possible to speak of non-compliance with professional requirements, and in turn, the lack of knowledge, skills and professional skills in working with various types of tachographs clearly indicates a mismatch with qualifications requirements. It is noted that to confirm the availability of skills, professional skills in working with various types of tachographs to persons who have received a driver’s license before 08/12/2014, only a document confirming training in the training program that meets the requirements of Order of the Ministry of Transport of the Russian Federation of January 17, 2012 No. 7 can be confirmed. Keywords driver, tachograph, traffic safety


Author(s):  
Nisrine Zammar

The use of social media platforms has become an essential part of today's protocol of reacting to any sudden crisis, due to their interactive nature which allows them to reach vast and heterogeneous audiences. This makes them the right tool that enables the organizations to spread their messages efficiently. Any failure in responding adequately on social media level, would allow rumors and negative contents to circulate uncontrollably, affecting the organizational reputation and recovery. Therefore, the main purpose of this paper is to provide a clear understanding of the crisis communication strategy adopted by Dairy Khoury, a Lebanese firm, on social media, at a time when the new power of social media had not yet been fully measured and estimated. The author will highlight the necessity of a preset crisis communication strategy and the use of social media platforms while dealing with crisis.


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