The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In the current design code, cantilever shear walls are normally assumed to stand on a solid foundation, and foundation beams, slabs and piles are designed separately without considering their interactions. Moreover, the shear transfer mechanisms are neglected, which along the wall base vary depending on the cracks and inelastic deformation levels at the shear wall base. In this study, a 25% scaled...
Users' Quality of Experience (QoE) in Interactive 3D Tele-Immersion (i3DTI) systems is influenced by several factors such as the quality of the "live" 3D avatars of the users, network latency, rendering methodology (head mounted display or regular TV type of display), etc. Hence, it becomes important to answer the question: "Is Visual Quality (VQ) the only factor to be considered or...
The User Centered Design methodology consists of an iterative cycle of analysis, ideation, prototyping, and evaluation. In this context, heuristic evaluations are valuable tools to identify usability problems in an interface from the earliest stages of design. However, there are few well-defined heuristics for Virtual Environments. Based on this, the objective of this research is to verify and improve...
This work presents the development and validation of a natural interaction method in an immersive CAVE environment. The Microsoft Kinect was used to track the user actions, but only the infrared camera of the device was used, through a gesture recognition model developed by (LEITE, 2015). From such gesture recognition, a nre grammer was defined, as needed for an immersive environment such a the CAVE...
In this paper, we describe the application TaRDIS, a visual analytics system for spatial and temporal data designed for the needs of archaeo-related disciplines that supports domain experts in analyzing their data. The temporal data is visualized in form of an interactive Harris Matrix that illustrates the temporal position of the layers. The 2D and 3D visualization sketches the spatial position of...
Hand gestures are intuitive and universal methods for interacting with computers. Various research related to hand gestures with Human-Computer-Interactions (HCI) have been reported in recent years. As hand gestures recognition tools, depth cameras detecting both depth and color information of target objects are widely used because of its non-contact and intuitive interaction merits. However, complex...
Biometric authentication in mobile devices has become a key aspect of application security. However, the use of dedicated sensors such as fingerprint/iris sensors may not always be feasible. As an alternative, the use of face and voice biometrics using the generic sensors integrated in smartphones is gaining momentum. This work applied the HBSI framework to analyise the user's interaction with the...
In this paper, we evaluate methods of aggregating personal sensor data to estimate the degree of group stress. We compare the estimation accuracy of two aggregation methods, one without and one with personal distribution scaling. As a result of applying the data of 9 groups of people (105 people) to the methods, it is shown that the no-scaling method successfully estimates the degree of group stress...
This paper proposed an innovative education platform-VREX (Virtual Reality based Education eXpansion), with combination of online and offline, to improve the curriculum building and teaching experience. VREX is based on Virtual Reality (VR) and we believe VR can revolutionize the education ecosystem. With some trials, we found VR can be used to promote curriculum effectiveness in an immersive environment...
IOT is one of the most controversial topic in current digitalized era. The scope of IOT is developing gradually with new technologies like smart grids, smart homes, smart cities etc. IOT permits internet connectivity for all kind of physical objects and devices. Virtualization of different types of system is becoming trend in today's world that allows to perform without direct physical interaction...
The three-phase voltage source converter (VSC) suffers from complex dynamics due to large signal disturbances such as grid voltage dips. In this paper, the instability phenomena of current loop and voltage loop are identified in three-phase grid-connected VSCs. Moreover, the interaction of the voltage loop and current loop is analyzed. Thus, the fault current under such situation can be calculated...
In DC microgrid, it is common that constant power loads (CPLs) exhibit negative impedance characteristics, which degrades the stability margin of the whole system. This paper focuses on the stability problem of isolated DC microgrid with multiple DC voltage control units and constant power loads. Taking controllers into account, the detailed impedance model of DC microgrid is established, and it shows...
An optimized multiple layered plasma stealth model, with great electromagnetic (EM) wave absorption performance based on transmission line theory is proposed in this study. With employment of this multiple inhomogeneous layered plasma structure, EM waves absorption ability improves significantly compared with homogeneous ones. A wide EM wave frequency range, X band, interaction with this structure...
Since brain-computer interface (BCI) systems have moved outside the laboratory settings, their use in virtual reality and games promised to offer a more compelling experience to the user. BCI for entertainment yields interesting applications with the main purpose to create positive experiences that enrich our lives. However, the main challenge in the use of BCIs lies in the lack of reliability and...
Requirements engineering provides several practices to analyze how a user wants to interact with a future software. Mockups, prototypes, and scenarios are suitable to understand usability issues and user requirements early. Nevertheless, users are often dissatisfied with the usability of a resulting software. Apparently, previously explored information was lost or no longer accessible during the development...
Inter-component communication (ICC) serves as a key element of any Android app's implementation. Specifically, an Android app uses Intents as the main mechanism for ICC to complete tasks such as switching between different user interfaces, starting background services, communicating to other apps on the Android device, and saving or retrieving data from device storage. Thus, dissecting how an app...
To complete a change task, software developers perform a number of activities, such as locating and editing the relevant code. While there is a variety of approaches to support developers for change tasks, these approaches mainly focus on a single activity each. Given the wide variety of activities during a change task, a developer has to keep track of and switch between the different approaches....
Tujia brocade craft, as a kind of famous folk handcraft of Youshui watershed in China, cannot be contacted by the public personally except through pictures, text, videos due to its regional distribution and the closure inheritance way. So people are unable to get better understanding of the entity and the essence of Tujia brocade craft, which seriously hampered the development and inheritance of this...
This research investigated the interaction between dancers when performing together, and the differences in dancers' emotions and movements in the presence and absence of an audience. Both qualitative and quantitative analyses were performed using psychological indices and motion capture techniques, respectively. First, we investigated the interaction between the dancers. A comparison of the results...
The analysis of flow data for nano suspensions of barium titanate at different concentrations and shear rates is an important task in the study of the dynamical destruction aggregates or inverse process of self-organization of particles. On the basis of magnitudes estimation of interaction, interface forces and dynamic influences into rotary viscometer, the conditions for the destruction are proposed...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.