The building recognition and analysis of remote sensing image based on depth belief network

The deep belief network model, which is widely used in deep learning, consists of a multi-layer constrained Boltzmann machine and a back-propagation network. The authors have conducted parameter sensitivity experiments on the number of iterations, the number of hidden layers and the number of hidden layer nodes in the DBN network for remote sensing image classification, and obtained a set of optimal parameter setting schemes. Moreover, the DBN algorithm has been enhanced with an improved Dropout strategy. The improved Dropout strategy selects only part of the data to clear the weight at a time, and a local area randomly clear strategy is adopted, which will save the local information of the image itself, and enhance the generalization ability of the model. In order to verify the advantages of the improved DBN algorithm model, the classification results of DBN, KNN, random forest and SVM have been compared. And the results show that classification accuracy of the improved DBN has been greatly improved, which is increased by about 2.5% compared to DBN. The improved DBN classification results are processed then, including connected areas marking, noise removal, morphological transformation and edge extraction, and the boundary information of the building is obtained according to the target shape characteristics. Finally, the experiment on the morphological characteristics of the building also shows it can extract better edge information of the building.     

The impact of self-control and texting-related accidents on the relationship between mindfulness and mobile texting while driving behavior

Distracted driving behavior often occurs when drivers mindlessly send or receive text messages with their mobile devices. It is imperative to understand the relationship between mindfulness and texting while driving behavior because distracted driving behavior has led to a reported increase in texting related accidents and mortalities. Based on this report, the purpose of this study is to examine the relationships between mindfulness, self-control, frequency of texting-related accidents, near-miss accidents, and texting while driving behavior. Using a total of 609 adults with an average age of 34.11 (SD = 12.21), results showed that observe, aware, and describe were related to texting while driving. Additionally, we found evidence that self-control partially mediated the relationship between mindfulness and texting while driving. Results also showed that near-miss texting while driving accidents moderated the relationship between mindfulness and texting behavior while driving. The observed inverse relationship between mindfulness and texting while driving can increase researchers’ understanding of self-control’s role in vehicular accidents triggered by texting. Implications and limitations are offered, along with suggestions for future research.     

Driving performance while using a mobile phone: A simulation study of Greek professional drivers

PurposeThe current study aims to assess the driving performance of professional drivers while using a mobile phone.Material and methodsA sample of 50 male professional drivers participated in the study. The sample was drawn conveniently from the professional drivers’ registries and the main taxi ranks. The inclusion criteria were: (a) age above 18 years, (b) possession of a driving license, (c) sufficient reading, writing, and communicating skills, (d) informed consent prior to participation. Laboratory tests were conducted using the VS500M driving simulator manufactured by Virage Simulation Inc. The intervention involved different tasks/assignments: (a) driving without using a mobile phone (Control time), (b) driving while having a conversation on the mobile phone, (Task_1), (c) driving while reading out loud text messages (Task_2) and, (d) driving while texting (Task_3). Differences in the driving performance between the control time and the time with assignments, were examined. The participants were evaluated on the followings outcome measures: (a) variation of the steering position per second, (b) following distance per second, (c) variation of the lateral lane position per second, and (d) sum of squared acceleration per second.ResultsThe analysis indicated that “variation of the steering position per second” was significantly affected by “text-message reading” [t(50) = −5.443; p < 0.0001] and “texting” [t(50) = −5.442; p < 0.0001]. A significant main effect was observed in terms of the “following distance per second” and the “variation of the lateral lane position per second” for all the three mobile phone assignments. Lastly, the “sum of squared acceleration per second” was significantly decreased during conversation on the phone [t(50) = 2.713; p = 0.009] as well as during texting [t(50) = 3.428; p = 0.001] as compared with the control time.ConclusionsThe study is among the few existing experimental studies in a country with one of the highest road fatalities in Europe but with limited evidence on road traffic behaviour. This study could guide the design of large-scale simulation studies aiming to explore the impact of mobile phone on driving behaviour.     

Gaze behavior during urban cycling: Effects of subjective risk perception and vista space properties

In this research, we investigate how gaze behavior during urban cycling is affected by subjective risk perception and the local spatial configuration. For this purpose, participants cycled at five defined test locations while wearing a mobile eye tracking system. Next to the fixation duration, we extracted sight vector lengths (i.e., the distance between the current body location and the gaze location) and gaze angles (i.e., the degree to which the gaze deviates from the current travel direction). Concerning risk perception, participants provided a hazard estimate for each test location, as well as information about specific areas they experienced as dangerous. This information was aggregated into a local hazard level across all participants. Finally, the vista space (i.e., the space visible from the current position during a fixation) was quantified via isovist analysis. The results imply that spatially open locations, extending about equally into all directions, increase the level of perceived risk. Depending on the local spatial properties, participants also gaze into different directions, rather than further ahead and into their travel direction. Higher cycling experience and greater familiarity with a location enabled a more foresighted and focused gaze behavior. Our findings underline the importance to provide cyclists not only with enough space and with unobstructed views, but also to limit the space they are required to distribute their attention to.     

Metaphors for the Mobile Internet

This paper examines a set of metaphors for describing, understanding and characterising the Mobile Internet. The metaphors are a result of extensive user studies in the US, Hong Kong and Europe in the late 2006 and early 2007. In these studies, we explored the user experience related to the Mobile Internet through in-depth contextual interviews with over 40 users, including a group in the US, which was deprived of their standard Internet PC access for several days. Our analysis of the collected data resulted in six metaphors that can be used as powerful creative tools in designing Mobile Internet applications.     

Affectivity and movement: The sense of sensing in Erwin Straus

This paper explores the notion of sensing (Empfinden) as developed by Erwin Straus. It argues that the notion of sensing is at the center of Strauss's thought about animal and human experience. Straus's originality consists in approaching sensory experience from an existential point of view. Sensing is not a mode of knowing. Sensing is distinguished from perceiving but is still a mode of relation to exteriority, and is situated on the side of what is usually called affectivity. At the same time Strauss redefines the field of that which is commonly characterized as affectivity. Sensing designates a stratum that lies deeper than the division between perceiving and feeling (s'éprouver), a self-affection that is not an alternative to the opening upon exteriority. It corresponds to a mode of immediate communication, to a sympathy with the world that does not entail any thematic dimension, but does not fall back into a blind fusion. Rather, sensing is something in the living being's mode of moving that is irreducible, and that includes a tending toward something. This revised version was published online in June 2006 with corrections to the Cover Date.     

Mobile Cultures of Migrant Workers in Southern China: Informal Literacies in the Negotiation of (New) Social Relations of the New Working Women

In this paper, we analyze the data collected through in-depth interviews of migrant workers in Southern China about their mobile cultures. In particular, we focus on understanding the role that mobile cultures play in female workers’ negotiation of their social and romantic relations and leisure space and how these negotiations are directly or indirectly facilitated by development of informal literacies through their frequent short message service communicative practices. These will help us understand the lifestyle aspirations and life trajectories of the new young working women in China who are experiencing the most rapid socioeconomic changes in society and negotiating their ways of life amidst much tension between old and new values governing lifestyle aspirations, familial, and gender relations.

Analyse interlocutoire d’une plainte exprimée par une équipe mobile de soins palliatifs

This article points out the merits of conducting an interlocutory analysis of a group meeting held between two administrations of a questionnaire. Here, the Company Climate Questionnaire was filled out individually by the members of the group before and after the meeting. Changed attitudes toward the supervisory staff were observed after the discussion. All participants were members of a mobile palliative care team at a university hospital. The verbal interaction analysis allowed us to identify the collaborative facet of the complaint that surfaced, and to determine what inter - subjective processes arising during the group discussion triggered the expressed changes of opinion.     

Effects of different non-driving-related-task display modes on drivers’ eye-movement patterns during take-over in an automated vehicle

Highly automated vehicles relieve drivers from driving tasks, allowing them to engage in non-driving-related-tasks (NDRTs). However, drivers are required to take over control in certain circumstances due to the limitations of highly automated vehicles. This study focused on drivers’ eye-movement patterns during take-overs when an NDRT (watching videos) was presented via a head-up-display (HUD) and a mobile device display (MDD), compared to no NDRT as the baseline. The experiment was conducted in a high-fidelity driving simulator with real-world driving videos scenarios. Forty-six participants took part in the experiment by completing three drives in three counterbalanced conditions (HUD, MDD and baseline). A take-over-request was issued towards the end of automated driving requesting drivers to stop the NDRT and take over control. Eye-movement data including pupil diameter, blinks, glance duration and number of AOI (Area of Interest) were collected and analysed. The results show that during automated driving, drivers were more engaged in the MDD NDRT with smaller pupil diameter and shorter glance duration on the front scenario compared to the HUD and baseline modes. The number of AOI was reduced during automated driving in both MDD and HUD modes. The take-over-request redirected drivers’ visual attention back to the driving task from NDRT by increasing drivers’ pupil diameter, glance duration and number of AOI. However, the effect of MDD NDRT on pupil diameter and glance duration continued even after the take-over-request when the NDRT was terminated. The study demonstrated HUD is a better display to help maintain drivers’ attention on the road.