Head movement prediction is the key enabler for emerging 360-degree videos since it can enhance both streaming and rendering efficiency. To achieve accurate head prediction, becomes imperative to understand user's visual attention on under head-mounted display (HMD). Despite rich history of saliency detection research, we observe that traditional models are designed regular images/videos fixed at a single viewport would introduce problems such as central bias multi-object confusion when...

With the promising applications in e-Health and entertainment services, wireless body area network (WBAN) has attracted significant interest. One critical challenge for WBAN is to track maintain quality of service (QoS), e.g., delivery probability latency, under dynamic environment dictated by human mobility. Another important issue ensure energy efficiency within such a resource-constrained network. In this paper, new medium access control (MAC) protocol proposed tackle these two...

Wireless Body Area Networks (WBAN) is a promising low power technology that enables the communications between body area sensor nodes and central coordinator. It targets at many applications in e-Health services. In WBAN, different data sources generate time-varying traffic. Large traffic volume may result intolerant latency thus it extremely important most significant can always be delivered real-time fashion. Besides, transmission suffer from deep fading packets loss due to dynamic on-body...

The increasing popularity of virtual reality (VR) in a wide spectrum applications has generated sensitive personal data such as medical records and credit card information.While protecting from unauthorized access is critical, directly applying traditional authentication methods (e.g., PIN) through new VR input modalities remote controllers head navigation would cause security issues.The action can be purposefully observed by attackers to infer the input.Unlike any other mobile devices,...

In this paper, we present Prius, a hybrid edge cloud and client adaptation framework for HTTP adaptive streaming (HAS) by taking advantage of the new capabilities empowered recent advances in computing. particular, emerging clouds are capable accessing an application layer radio access networks (RANs) information real time. Coupled with powerful computation support, cloud-assisted strategy is expected to significantly enrich mobile services. Meanwhile, although HAS has established itself as...

Despite the increasing popularity, realizing 360-degree videos in everyday applications is still challenging. Considering unique viewing behavior head-mounted display (HMD), understanding saliency of becomes key to various video research. Unfortunately, existing datasets are either irrelevant or too small support modeling. In this paper, we introduce a large dataset for with 50,654 maps from 24 diverse videos. The created by new methodology supported psychology studies HMD viewing. We...

Video streaming is a prevalent mobile service that drains significant amount of battery power. While various efforts have been made toward saving both video transfer and display energy, they are independently designed in an ad-hoc way thereby can cause some non-apparent yet critical performance issues. To fill this gap, paper presents fundamentally new design by jointly considering the end-to-end pipeline from initial encoding to final display. In essence, we shift classic R-D tradeoff has...

Convolutional Neural Networks (CNN) have given rise to numerous visual analytics applications at the edge of Internet. The image is typically captured by cameras and then live-streamed servers for due prohibitive cost running CNN on computation-constrained end devices. A critical component ensure low-latency accurate offloading over low bandwidth networks compression that minimizes amount data offload maximizes decoding quality salient pixels analytics. Despite wide adoption, JPEG standard...

Offloading videos from end devices to edge or cloud servers is the key enabling computation-intensive video analytics. To ensure analytics accuracy at server, quality for offloading must be configured based on specific content and available network bandwidth. While adaptive streaming user viewing has been widely studied, none of existing works can guarantee server in bandwidth- content-adaptive way. fill this gap, paper presents DAO, a dynamic framework that jointly considers dynamics...

Understanding the vulnerability of virtual reality (VR) is crucial for protecting sensitive data and building user trust in VR ecosystems.Previous attacks have demonstrated feasibility inferring keystrokes inside head-mounted displays (HMDs) by recording side-channel signals generated during user-HMD interactions.However, these are heavily constrained physical layout or victim pose attack scenario since device must be strictly positioned oriented a particular way with respect to victim.In...

In wireless body area network (WBAN), various data sources are generated by different type of sensors and transmitted to the master node, which may result in temporally traffic loads. With time-varying channel caused frequent movement, also experience deep fading packet loss. To meet complex transmission requirements WBAN, a traffic-aware channel-aware MAC protocol is required. this paper, we introduce CA-MAC, context-aware using hybrid contention-based TDMA-based approaches. A dynamic...

During long-term medical monitoring in Wireless Body Area Networks (WBAN), network requirements (i.e. traffic loads and latency) of various data sources may be different at time. High lead to overload unacceptable latency, which makes potential danger patients undiagnosed. It is important that real-time transmission life-critical can always guaranteed. To address this problem, a context-aware MAC protocol presented paper. According analysis collected life parameters, the switch between...

To support long-term pervasive healthcare services, communications in Wireless Body Area Networks (WBANs) need to be both reliable and energy-efficient. As a cooperative transmission method, relay scheme works effectively resisting shadowing effect improving reliability WBANs. However, the extra energy consumption introduced by is very high, which can shorten lifetime of whole network. In this paper, temporal spatial correlation models for on-body channels are first presented better...

The prevalence of social networks has made it easier than ever for users to share their photos, videos, and other media content with anybody from anywhere. However, the easy access user-generated also brings about privacy concerns. Traditional control mechanisms, where a single policy is specific piece content, cannot satisfy user requirements in large-scale sharing systems. Instead, configuring multiple levels privileges shared desired. On one hand, conforms principle information...

The medicine adherence in Parkinson's disease (PD) treatment has attracted tremendous attention due to the critical consequences it can lead otherwise. As a result, clinics need ensure that intake is performed on time. Existing approaches, such as self-report, family reminder, and pill counts, heavily rely patients themselves log (hereafter, patient involvement). Unfortunately, PD usually suffer from impaired cognition or memory loss, which leads so-called medication non-adherence, including...

Online content popularity prediction provides substantial value to a broad range of applications in the end-to-end social media systems, from network resource allocation targeted advertising. While using historical can predict near-term with reasonable accuracy, bursty nature online evolution makes it difficult capture correlation between data and future long term. Although various existing efforts have been made toward long-term prediction, they need accumulate enough before their model...

When using personal computing services in mixed reality (MR) such as online payment and social media, sensitive information account passwords must be typed MR. To design secure MR systems build up user trust, it is imperative to first understand the security threat input. Although keystroke inference attacks by analyzing human-computer interaction videos or via wireless signals have been successful, they require placing extra hardware near which easily noticeable practice. In this paper, we...

Different from traditional HTTP adaptive streaming (HAS) in which only one client is considered, HAS over multi-client wireless networks faces new challenges. The Quality of Experience (QoE) users becomes unstable due to users' competition for shared bandwidth. It thus important accurately estimate the perceived experience and then adapt process accordingly. Furthermore, QoE fairness among multiple clients subscribing same services shall also be addressed. In this research, we propose a...

Privacy-aware location-based service (PA-LBS) preserves LBS users' privacy but undesirably sacrifices quality. In order to balance the two factors with satisfactory user experience, existing frameworks are faced barriers, that is, scalability and social-friendliness. First, schemes do not enable users flexibly scale their level on provision. Such a lack of easily results in either unacceptable service-quality degradation or insufficient protection fails meet dynamic requirements. Second,...

Wireless Body Area Network (WBAN) is a promising type of networks that mainly targets at applications in ubiquitous communication and e-Health services. Different from other types networks, one important challenge for WBAN its quality service (QoS) requirement, terms delivery probability data rate, will be time varying since human body highly dynamic physical environment. Another significant energy efficiency needs to guaranteed such resource-limited network. In this paper, QoS-driven...

360 video streaming is gaining popularity because of the new type experience it creates. Tile-based approaches have been widely used in VoD to save network bandwidth. However, they cannot be extended case live assume videos stitched offline before streaming. Instead, stitching has done real-time More importantly, speed as shown our experiments one order magnitude lower than transmission speed, making more a deciding factor overall frame rate speed. In this paper, we design algorithm for...

Type A aortic dissection (TAAD) has a rapid onset and high mortality. Currently, diameter is the major criterion for evaluating risk of TAAD. We attempted to find other morphological indicators further analyze their relationships with type dissection.We included imaging clinical data 112 patients. The patients were divided into three groups, which Group 1 had 49 normal diameter, 2 22 ascending aneurysm, 3 41 used AW Server software, version 3.2, measure aorta-related indicators.First, in 1,...

This paper presents a new fully-digital high-frequency (HF) backscatter radar system for oceanographical remote sensing. The receiver is designed that employs directly radio freqency (RF) sampling, digital down-conversion, and pulse compression techniques. difference between this ordinary analogue illustrated. Results of closed-loop test field experiment conducted on the coast Eastern China Sea are given to prove good performance system.

Pulmonary fibrosis is a chronic and fatal disease of lung tissue with high incidence mortality in the world. The exploration effective treatment for pulmonary remains an urgent challenge. In our study, Qingfei Xieding was investigated as novel Chinese traditional patent medicine against fibrosis. A mouse model constructed by injecting bleomycin sulfate. Following administration, samples were collected to assess phenotype changes analyzing coefficient, wet/dry, histopathologic section. Levels...