Wireless sensor/actuator networks (WSANs) are emerging as a new generationof sensor networks. Serving the backbone of control applications, WSANs will enablean unprecedented degree distributed and mobile control. However, unreliability ofwireless communications real-time requirements applications raise greatchallenges for WSAN design. With emphasis on reliability issue, this paper presents anapplication-level design methodology in applications. Thesolution is generic that it independent...

A two-hop neighborhood information-based routing protocol is proposed for real-time wireless sensor networks. The approach of mapping packet deadline to a velocity adopted as that in SPEED; however, our decision made based on the novel integrated with energy balancing mechanism. Initiative drop control embedded enhance utilization efficiency, while reducing miss ratio. Simulation and comparison show new has led lower ratio higher efficiency than two existing popular schemes. result also...

Narrowband Internet of Things (NB-IoT) is a new cellular technology introduced by the third generation partnership (3GPP) providing low-power and wide-area coverage for IoT. In this paper, we consider scenario that NB-IoT deployed in an heterogeneous network quality direct link from user equipment (TIE) to serving base station (BS) cannot satisfy service requirement transmission vital sensing data. Thereupon, device-to-device (D2D) communication adopted as routing extension systems, thus,...

Reverse auction-based incentive mechanisms have been commonly proposed to stimulate mobile users participate in crowdsensing, where submit bids the platform compete for tasks. Recent works pointed out that bid is a private information which can reveal sensitive of (e.g., location privacy), and bid-preserving with differential privacy against inference attack. However, all these rely on trusted platform, would fail protection completely when untrusted honest-but-curious). In this paper, we...

Recently, the newly emerging wireless powered communication network (WPCN) has drawn significant interests, where nodes are by energy harvested from radio-frequency (RF) signal. This paper studies WPCN one hybrid sink (H-sink) coordinates energy/information transmissions to/from a set of one-hop RF only. The transmission completion time (TCT) minimization for uplink (UL) given number bits per node is considered. First, we prove that harvest-then-transmit (HTT) strategy strategies able to...

The geochemical characteristics of shale such as total organic content, type and maturity, sedimentary environment, geological characteristics, scale development were analyzed to study the resource potential lacustrine in Lower Jurassic Ziliujing Formation Sichuan Basin. is mainly developed Dongyuemiao Da'anzhai members. analysis carbon kerogen macerals, biomarker compounds vitrinite reflectance samples showed that content generally over 1.0%; main II1-III, but II1 central part basin; value...

Mobile crowdsensing (MCS) has now become an effective paradigm to collect massive data for various sensing applications. However, the interactions between mobile users and platform, release third parties, pose severe challenges of privacy leakage MCS systems, such as users' identities locations. Although several works on have explored issues in task allocation, incentive, reporting, there is still a lack comprehensive preserving framework protect throughout involvement tasks. In this...

Using a reasonable choice in normalizing the timelike Killing vector, we investigate thermodynamic properties of charged accelerating Anti-de Sitter (AdS) black holes. We find that expression mass first law thermodynamics displays an inextricably intertwining behavior with charge due to unusual asymptotic structure Meanwhile, length as potential conjugate varying cosmic string tension is introduced and analyzed detail, possible phase holes also discussed standard analysis. Furthermore,...

Reverse auction-based incentive mechanisms have been commonly proposed to stimulate mobile users participate in crowdsensing, where submit bids the platform compete for interested tasks. Recent works pointed out that bid is a private information which can reveal sensitive of (e.g., location privacy), and bidding-preserving with differential privacy against inference attack. However, all these rely on trusted platform, would fail protection completely when untrusted. In this paper, we design...

With the widespread application of 5G and Internet things (IoT), edge computing cloud have been collaboratively utilized for task offloading processing. However, though massive devices (e.g., smartphones) are organized into multi-cells, most existing works do not explore computation edge-cloud under inter-cell interference. Thus, decisions may be inappropriate as transmission rate is overestimated. To address this issue, we propose COMEC, a novel Computation Offloading scheme in Multi-cell...

Nowadays, smartphones have become indispensable in people’s daily work and life. Since various sensors communication chips been integrated into smartphones, it has feasible to provide indoor positioning using phones. This paper proposes such a solution based on smartphone, combining Bluetooth low energy (BLE) pedestrian dead reckoning (PDR) the particle filter framework realize real-time reliable positioning. First, smartphone’s built-in accelerometer, magnetometer, gyroscope are used data...

ABSTRACT Using the job demands‐resources (JD‐R) theory, this study aimed to understand how and when emotional leadership affected teachers' psychological well‐being. It explored mediating effect of labour moderating effects collectivism two Confucian cultural values (i.e., harmony obedience authority). The sample included 2361 Chinese teachers from primary secondary schools. Findings showed that as a resource leaders promoted deep acting (DA) expression naturally felt emotions (ENFE),...

This paper describes a system design approach for wireless sensor network based wildfire monitoring, including the architecture, hardware and software framework. Effectiveness of solution is evaluated in terms reactivity, reliability, robustness lifetime. The main contribution that can meets goal reactivity demonstrates satisfactory relatively longer

Routing protocols are crucial to self-organize wireless sensor networks (WSNs),which have been widely studied in recent years. For some specific applications, both energyaware and reliable data transmission need be considered together. Historical link statusshould captured taken into account making forwarding decisions achievethe reliability energy efficiency tradeoff. In this paper, a dynamic window concept(m, k) is presented record the historical information quality estimation basedrouting...

The considerable risk of falls and the substantial increase in elderly population make automatic fall detection system become very important. Existing systems using accelerometer as detector are often designed based on an empirical acceleration threshold to differentiate from normal activities. In this paper, we design method under Neyman-Pearson framework. An optimal can be obtained which meets specified false alarm rate while maximizing probability. We use TelosW mote with detector, is...

Radio frequency identification (RFID) systems can be applied to efficiently identify the missing items by attaching them with tags. Prior tag protocols concentrated on identifying all of However, there may some scenarios in which we just care about key tags instead tags, making it inefficient merely due interference replies from ordinary (i.e., nonkey tags). In this paper, propose investigate problem and completely for anonymous RFID privacy is required well protected. First, a vector-based...

With the promising technology of far-field wireless power transfer, wearable devices are able to harvest radio frequency (RF) energy from RF-based chargers and thus operate continuously. Rational planning quantity positions provide an effective way improve recharging efficiency save charger deployment budget. Existing work on placement mainly considers situation where static, or adopt very simple mobility model. In this paper, we consider charging service provision for worn by users in a...

Truth discovery is an effective tool to unearth truthful answers in crowdsourced question answering systems. Incentive mechanisms are necessary such systems stimulate worker participation. However, most of existing incentive only consider compensating workers' resource cost, while the cost incurred by potential privacy leakage has been rarely incorporated. More importantly, best our knowledge, how provide personalized payments for workers with different demands remains uninvestigated thus...