Smart Mobile Terminals Research Articles

Mobile job security protection under the ubiquitous power Internet of Things

The rapid development of the new generation of information intelligence technology is closely related to people’s life, work and other social activities. The ubiquitous power Internet of Things is a complex multi-network flow system, with the power system as the core, composed of communication network, cloud platform technology, intelligent terminal sensor and artificial intelligence; characteristics are open sharing, ubiquitous connection, holographic perception, fusion innovation. With the development of the energy Internet, the power system is required to fully perceive and widely interconnect massive data and propose the concept, which will become a new idea for the development of information sharing networks in the field of energy Internet power. New mode. Mobile intelligent terminals are important access devices for ubiquitous power Internet of Things and play an important role in mobile operations; mobile smart terminals face more security risks. In the context of ubiquitous power Internet of Things, it is of great significance to analyze the problems existing in the security protection of mobile intelligent terminals and explore the security protection technology of mobile intelligent terminals.

Review on Smart Gas Sensing Technology.

With the development of the Internet-of-Things (IoT) technology, the applications of gas sensors in the fields of smart homes, wearable devices, and smart mobile terminals have developed by leaps and bounds. In such complex sensing scenarios, the gas sensor shows the defects of cross sensitivity and low selectivity. Therefore, smart gas sensing methods have been proposed to address these issues by adding sensor arrays, signal processing, and machine learning techniques to traditional gas sensing technologies. This review introduces the reader to the overall framework of smart gas sensing technology, including three key points; gas sensor arrays made of different materials, signal processing for drift compensation and feature extraction, and gas pattern recognition including Support Vector Machine (SVM), Artificial Neural Network (ANN), and other techniques. The implementation, evaluation, and comparison of the proposed solutions in each step have been summarized covering most of the relevant recently published studies. This review also highlights the challenges facing smart gas sensing technology represented by repeatability and reusability, circuit integration and miniaturization, and real-time sensing. Besides, the proposed solutions, which show the future directions of smart gas sensing, are explored. Finally, the recommendations for smart gas sensing based on brain-like sensing are provided in this paper.

Blockchain-Enabled Data Collection and Sharing for Industrial IoT With Deep Reinforcement Learning

With the rapid development of smart mobile terminals (MTs), various industrial Internet of things (IIoT) applications can fully leverage them to collect and share data for providing certain services. However, two key challenges still remain. One is how to achieve high-quality data collection with limited MT energy resource and sensing range. Another is how to ensure security when sharing and exchanging data among MTs, to prevent possible device failure, network communication failure, malicious users or attackers, etc. To this end, we propose a blockchain-enabled efficient data collection and secure sharing scheme combining Ethereum blockchain and deep reinforcement learning (DRL) to create a reliable and safe environment. In this scheme, DRL is used to achieve the maximum amount of collected data, and the blockchain technology is used to ensure security and reliability of data sharing. Extensive simulation results demonstrate that the proposed scheme can provide higher security level and stronger resistance to attack than a traditional database based data sharing scheme for different levels/types of attacks.

Research and Implementation of Key Techniques for Indoor Movement Object Trajectory Prediction

With the popularity of smart mobile terminals and Wi-Fi signals, people’s demand for indoor location services has also increased. However, in the indoor space, GPS positioning is inaccurate, and the Wi-Fi signal may also have signal instability even no signal in some areas. This paper proposes a prediction method based on improved HMM model combined with historical trajectory clustering. The experimental results on UJIIndoorLoc data set show that the predicting trajectories can greatly improve the real-time performance of location services and the proposed method has great improvement in accuracy and scalability comparing with another model.

The Implementation of ECG Monitoring Medical System based on Mobile Platform

With the development of smart phones and mobile terminals, mobile health would play an important role in the treatment of heart disease. This paper presents an ECG monitoring medical System based on mobile platform. This system Consists of Data Collection Terminal, ECG Monitoring Terminal, Health Records Management Platform,Mobile Terminal. ECG data is collected by Data Collection Terminal. Eventually, ECG data will be sent to the platform via Bluetooth and other communication technology. The doctor could feedback the diagnose to the user’s mobile Terminal. Our main target is to provide timely and reliability services to patients and reduce cost and increase efficiency in home health-care, community health-care.

Mobile Instant Video Clip Sharing With Screen Scrolling: Measurement and Enhancement

Today's multimedia content generation and sharing have been dramatically boosted by the deep penetration of broadband wireless accesses and the much improved processing power of smart mobile terminals. Mobile users can now instantly capture and share short video clips (usually of several seconds) anywhere and anytime, and consume them with convenient touch screen operations. The instant video clip sharing has emerged as a mainstream application; such pioneers as Twitter's Vine, Miaopai, Instagram, and Snapchat have seen great acceptance, particularly by the youth community. In this paper, we present an initial study on instant video clip sharing. Taking Twitter's Vine as a representative, we systematically investigate its distinct mobile interface, service framework, and user watching behaviors, revealing how this mainstream multimedia service type differentiates from its traditional counterparts. Our trace measurement and analysis demonstrate that instant mobile video clips have a much shorter lifespan and highly skewed popularity that quickly decays over time. This is further aggravated by the unique screen scrolling operation for video browsing. As such, the download-and-watch scheduling used by existing platforms can hardly achieve quality user experience and cost efficiency. We closely investigate and model the input user gestures for scrolling, including drag and fling , and analyze the scheduling policy, partitioning it into prefetching scheduling and watch-time download scheduling. We develop effective solutions toward both subproblems as well as their integration with screen scrolling. The superiority of our enhancement is demonstrated by extensive trace-driven evaluation.

Outsourced Ciphertext-Policy based Privacy Preservation for Mobile Cloud Computing

With the rapid advancement of mobile phone technology, crowdsourced mobile applications are gaining importance for cheaper and abundant information gathering source. A couple of benefits of crowdsourcing are better (versatile) and less expensive responses to the requester, source of earning for crowd contributors at the same time. With the emergence of wireless access technologies and the popularity of smart and intelligent mobile terminals like smartphones, the privacy of requesters and contributors in a crowdsourced environment is becoming more crucial. Computation complexity of available privacy preserving tools and verification of outsourced schemes are not feasible for WSNs low power and resource constrained contributing devices. The low-end resource constrained mobile devices to have less capability to compute multiple access policies and the computation cost increases with the complexity of access strategy. To resolve this issue, we proposed a resourceful verifiable outsourced encryption policy based on ciphertext attributed policy (OS-ABE), which is a platform for computing exhaustive computing tasks during private data encryption and decryption. The proposed scheme works without revealing the personal data at outsource and leaves only the minimal calculation to the crowdsource contributor and the requester. To authenticate and overcome known attacks like DoS, false computing results at crowdsourced platforms, anonymity server is embedded to handle contributors privacy issues by providing a secure shell in the framework. This scheme is based on bilinear group of prime order in which two hash functions can verify outsourced computation and ensure integrity of data. The formal security and performance analysis is presented and found to be efficient and secure.

Nanopatterned luminescent concentrators for visible light communications

Visible light communication (VLC) is a promising candidate for high-speed wireless communication with numerous unlicensed spectrum. To achieve high-speed data communication, it requires intense light signals concentrated on a tiny fast photodiode. The common way of using focusing optics reduces the field of view (FoV) of the photodiode due to the conservation of étendue. Luminescent solar concentrators (LSC) provide a solution to enhance the signals without affecting the FoV. In this paper we demonstrate nanopatterned LSCs fabricated on flexible plastics that achieve a doubling of optical gain compared to its traditional rectangular counterparts. These LSCs can free VLC detectors from complex active pointing and tracking systems, making them compatible with smart mobile terminals in a simple fashion.

Practical Incentive Mechanisms for IoT-Based Mobile Crowdsensing Systems

Powerful smart terminals with rich set of embedded sensors promote the development of the Internet of Things (IoTs). Mobile crowdsensing systems (MCSs) can be formed by these mobile smart terminals from IoTs to collect and exchange data. The main idea of MCSs is to outsource sensing tasks (collecting data) to various mobile devices which are carried by people or vehicles. The design of incentive mechanisms in MCSs is one of the hottest current research topics. However, most of the existing studies focus on maximizing the utilities or social welfare while neglecting the practical requirements of MCSs surveillance applications. In this paper, we discuss the importance of fairness and unconsciousness of MCS surveillance applications. Then, we propose offline and online incentive mechanisms with fair task scheduling based on the proportional share allocation rules . Furthermore, to have more sensing tasks done over time dimension, we relax the truthfulness and unconsciousness property requirements and design a ( $\varepsilon $ , $\mu $ )-unconsciousness online incentive mechanism. Real map data are used to validate these proposed incentive mechanisms through extensive simulations.

Organizational Mode Innovation and Credit Supervision in Road Freight Transportation under Smart Mobile Devices Applications Services

Abstract The rapid development of China's road freight transport has driven many issues over the last few decades, and trends are to apply new technology to improve the efficiency of cargo movement. In the view of current problems in the supervision and operational mode in China, this paper analysis the function and characteristics of road freight mobile apps that appeared in markets and describes how they may change the road freight industry in the future. Taking the Luge logistic, Cainiao logistic and Loji logistic as representative, a loose network organization is emerging and the intensive mode provides a direction for the transformation and innovation of China's freight transport industry by integrating small and medium-sized business operators to improve the social logistics. The research indicate flat structural design based on smart mobile terminals can balance the supply and demand, in particular to enhance return-picking rate to improve individual benefit, and reduce overall social resources and environmental cost. Record of footprint of goods based on apps and big data analysis provides good database and technical support for the third-party credit evaluation of freight transport operations, and the government may apply the credit evaluation platform composed of trade credit and social credit to regulate the road freight transport industry directly in the future. The survey indicates that most stakeholders support the promotion of freight mobile apps, and the traditional operation may be replaced by the application of freight mobile apps in the future.

新信息环境下的高校移动图书馆应用平台现状调研

新信息环境下，数据传输速度大幅度提升，网络覆盖范围也大面积增加，智能移动终端的普及化对高校移动图书馆服务提出了新的要求，促进了高校移动图书馆的服务与发展。本文通过问卷调查与实地走访方式对北京地区部分高校移动图书馆应用现状进行了调研，总结了当下高校移动图书馆的几种平台模式，分析了移动图书馆所采用的不同平台的优缺点。通过调研读者对移动图书馆的服务需求分析，结合读者需求与高校移动图书馆服务特点提出了移动图书馆发展的建设性方案。 In new information environment, the data transmission speed improved significantly, the area of network coverage large increased. With the popularisation of smart mobile terminals, users proposed new requirements of university mobile library service. And it promoted the development of university mobile library service. This article surveyed status of several university mobile libraries in Beijing area with both questionnaires and site visiting methods. It summed the platform styles of university mobile library, and analyzed characteristics of these platforms. Through the analysis of users’ requirements of university mobile library service, it combined the users’ requirements and the service characteristics of university mobile library and proposed the constructive program of development of mobile library.

A Mobile Device Platform Based on Android and Google Cloud Message for Ubiquitous Access

Recent years have seen a remarkable integration of leading-edge technologies, such as cloud-computing and mobile agent technology, with the traditional information system. This integration improves the employee performance and facilitates authorized access to information and data at anytime and anywhere through familiar environments such as Android-enabled mobile devices, for example giving orders in real time to employees equipped with smart mobile terminals can raise working efficiency. This paper presents a new distributed, autonomous and intelligent architecture based on multi-agent systems (MAS) allowing authorized ubiquitous access to company information system and synchronizing data between mobile device (MD) and Information System (IS), in real time and without human intervention. The proposed architecture was validated by the implementation of an intelligent data synchronization platform able to manage efficiently the work orders (WO) of a company of management and distribution of water and electricity. The platform ensures the WO exchange in real time between the IS of the company IS and MD of field operators. This feature draws upon on Google Cloud Messaging (GCM) mechanism that allows for more efficient power management leading to increased battery life. This platform can also display a map that can assist field operators in finding the shortest route to the location that will be addressed through the Google Maps APIs. The user and WO position are determined using android location based services.

Design and Realization of Smart Home Terminal Applications Based on IOT Technology

With the development of IoT technology, more and more smart household devices, such as sensors and smart mobile terminals, have appeared in our daily life. Users can remotely control almost all the devices in the smart home system and understand their information, thus effectively improving the user life quality. For background, this paper designs and develops two smart mobile terminal applications based on smart home technologies research: one is the smart remote control application based on infrared technology, which realizes remote controlling on infrared smart devices based on infrared transmission technology, WiFi and Socket technology; the other is remote control and monitor application based on PhoneGap, which realizes remote controlling and monitoring on the devices directly connected to the gateway based on PhoneGap, HTTP request and HTML5 cache technology. Research on the mobile applications in the smart home system and their realization laid a solid foundation for the future research and function expansion of smart home and even smart city system.

Network Voronoi Diagram on uncertain objects for nearest neighbor queries

In the past decade, probabilistic nearest neighbor (PNN) query processing has received significant research attention due to the development of mobile smart terminals and the advances in wireless communication technologies. However, to the best of our knowledge, most of the existing PNN-oriented studies are aimed at the Euclidean space and cannot be readily extended to road networks. This paper takes the first step toward processing PNN queries in road Networks (NPNN). We first present an efficient method to construct Network Voronoi Diagram on Uncertain objects (UNVD), in which we first find the possible NNs of all the vertices, and then compute the u-edges as well as their corresponding possible NNs. Next, to process NPNN queries, we first present a computational method to calculate the probabilities for each possible nearest object, and then propose two data structures, namely gIndex and qIndex, to index the u-edges in UNVD. Finally, we evaluate the performance of our NPNN query processing methods via extensive experiments on both real road networks and synthetic 2-dimensional grid networks. Experimental results demonstrate the effectiveness and efficiency of our methods in terms of I/O cost and query time.

Design and Application of Medical Monitoring System Based on Android

With the development of information and communication technology and the advent of new technologies including wireless communication, smart handheld mobile terminals and wearable medical sensor detection technology, mobile medical care is facing its development opportunity. In this context, our medical monitoring system combines wireless communication technology with wearable medical sensor and designs a remote medical monitoring of multiple physiological parameters. With the support of Android devices, this system offers medical reports retrieval, online diagnosis and health guidelines. It provides users with multi-functional, instant, real-time monitoring and interactive medical services in a high efficient low cost way, which enables remote interrogation and medical care become possible.

Design and Implementation of Universal Serial Bus Transceiver with Verilog

In this paper, a simplified Universal Serial Bus (USB) transceiver is designed, which is special used for mobile terminals such as smart mobile phone, IPad, smart sensor, and so on. The transceiver includes functions such as data serialization, bit stuffing, NRZI encoding and NRZI decoding, bit unstuffing, deserialization. The transceiver is designed and implemented with Verilog HDL in Modelsim. And the transceiver has been verified with FPGA and synthesized using 0.18um 1P6M CMOS process technology. The simulation and FPGA results show that the transceiver satisfies all design specification and can be used as an IP core for smart mobile terminals. DOI : http://dx.doi.org/10.11591/telkomnika.v12i6.5441 Full Text: PDF

Analysis of Mobile Database Technology and its Application

With the popularity of smart mobile terminals, mobile database technology is moving from research to a wide range of applications gradually.First this paper analyzes the concept and characteristics of mobile database, and then it lists several main key technologies of mobile database.Finally it studies the mobile database technology in the field of logistics, manufacturing, mobile banking, health care and public utilities. It hopes to have the future reference significance for the development of mobile database.

Research on Security Risk Assessment Model of Smart Mobile Terminals

As information technology continues to develop, smart mobile terminal has become the electronic equipment most closely with people life and work. Meanwhile, the security threats are also increasing to smart mobile terminal when it conducts the business application. Based on the analysis of security assessment architecture for smart mobile terminals, the security risk assessment model for smart mobile terminals is proposed in this paper. The security of smart mobile terminals can be assessed based on the proposed security risk assessment model well.

Personalized Mobile Catering Recommender System Based on Context Ontology Model and Rule Inference

With the development of smart mobile terminals and pervasive computing, mobile recommender systems are proposed to realize context-aware personalized recommendation services. A context model plays a key role in a mobile recommender. We discussed the context ontology modeling approach specific for mobile recommendation, and developed a two-level context model including a upper ontology and a domain ontology. We also designed a personalized mobile catering recommender system based on the context ontology model and rule inference. The framework of the system is depicted. And the process of rule generation and rule inference based on the context ontologies is demonstrated.

Research on Security Requirement and Improvement Recommendation of Smart Mobile Terminal

The rapid development of wireless technology has been a qualitative leap in the mobile network performance, allowing mobile network terminals to enjoy a variety of service types. But as the important personal information storage carrier to users, the own security of the smart mobile terminal is related to the safety of the entire mobile Internet. This paper introduces the security situation of the smart mobile terminals, analyzes the potential security threats and the security needs, and at last gives improvement recommendations of the smart mobile terminals protection.