Smart Mobile Communication Research Articles

A Leaky Wave Antenna With Capability of Fixed-Frequency Beamforming Scanning

A novel electrically controlled leaky-wave antenna (LWA) with capability of fixed frequency beamforming scanning is proposed in this communication. The antenna is designed on substrate-integrated waveguide (SIW), and the slot period of the antenna can be changed electronically by switching between “ON” and “OFF” states of PIN diodes connected to two edges of slots. Based on the reconfigurable property of slot period, the phase constant of the -1th spatial harmonic can be modified, thus the beam direction of antenna can be changed and continuous beam scanning can be realized. For specific applications in linear confined space, scanning beam with almost the same field strengths along a straight path is commonly required. Therefore, a hybrid coding method is proposed in this paper and applied to a 2×1 antenna array to realize bilateral beamforming scanning. Simulation and measurement results show that a wide beam scanning range of 99° at 5.98 GHz can be obtained in both cases of continuous beam scanning and beamforming scanning. The proposed LWA array is suitable for the future application of smart mobile communication.

Social media intelligence: The national security–privacy nexus

Globally, changes in technology have always shaped the intelligence collection environment. South Africa is no different. The emergence of satellite imagery had a significant influence on the Geospatial Intelligence (GEOINT) capabilities and, similarly, the emergence of the telegram and later the telephone had and equally significant effect on the Signals Intelligence (SIGINT) environment. With communications being revolutionised by mobile technology that include recording, geo-positioning and photography, collection and distribution are ubiquitous. Smart mobile communication technology is also the driver of social media everywhere, at all ages, state, and non-state, non-stop. More recently, Social Media Intelligence (SOCMINT) has had the same significant influence on the collection of intelligence in general. Globally several examples of the successful exploitation of SOCMINT can be found internationally, it would be surprising if South Africa is not a statistic of this phenomenon yet. Initially, many organisations viewed (and some still do) SOCMINT as an Open-Source Intelligence (OSINT) tool. However, when considering the South African intelligence landscape, the concepts democracy, transparency, and intelligence oversight are calibrating factors to bear in mind. It is also important to consider the influence of the national legislative framework governing the use of SOCMINT in South Africa by state and non-state actors. It then becomes clear that issues such as personal legal right to privacy means that SOCMINT is probably no longer covered by the scope of the OSINT definition and that intelligence organisations collecting social media content and producing SOCMINT should adhere to the legislative framework governing the collection and use of social media content and the production of SOCMINT.

Novel beta function-based image encryption with fractional sine transform

Due to the rapidly growing technological advancements especially in the field of data science and associated technologies like the Internet of things, the safety concern of important data is widespread. Data collection and exchange have achieved greater levels in this cyber era so the fishing activities. Digitized visual content security is therefore much needed here because the major part of digital data contains images or video also due to the rapid growth in smart mobile communication and allied instruments and gadgets. Different image protection strategies are therefore already proposed to ensure this. A hybrid technique combining discrete fractional sine transformation with Beta function is therefore proposed here in the sequence. This hybrid combination is remarkable in the sense that compared to its ancestor algorithm; it has greater PSNR, least reconstruction error and promising statistical results viz. NPCR, UACI and correlation coefficient.

Hybrid Zoning Algorithm to Optimize Overhead in Smart Mobile Communication

With the increase of mobile terminals, routing protocols in wireless communications must provide better quality of service to meet bandwidth and reliability requirements. In networks without infrastructure, such as ad hoc and sensor networks, where a device performs as both a terminal and a router to forward data of other nodes, maintaining the network topology consumes considerable resources in terms of energy and bandwidth. These parameters need to be considered when designing routing protocols for wireless networks. To reduce the cost of the protocol overhead, some algorithms act on the forwarders, while others act on the transmission of messages. Finally, the hybrid ones are a combination of both. In this paper, we propose a new algorithm with two zoning strategies to enhance the performance of mobile network. The first strategy helps to select dispersive forwarders in order to reduce the collision in radio channel. The second strategy aims to reduce the transmission of redundant messages. Both strategies are based on the location information of nodes. We implemented our algorithm in the optimized link state routing protocol, the most used protocol in mobile ad hoc networks. We showed by simulations that our solution reduces drastically the cost of the overhead with no hindrance to the network topology.

A New Self-Certified Signature Scheme Based on NTRUSing for Smart Mobile Communications

Smart mobile devices are critical component in the mobile communication, it has been acted as various services with the development of the mobile internet. For example, mobile payment has become universal in the mobile e-commerce, and it is widely attracting attention by most people. However, the extensive application of the mobile e-commerce would increase the security issue for mobile users who use the smart mobile devices, such as integrity and authentication protection for the transaction data and the user privacy. Furthermore, most smart mobile devices are designed with low power and resource constrained systems, it is not suitable for providing competent security levels through higher complexity cryptographic algorithms to resolve the above security issues. In this paper, we propose a new self-certified digital signature scheme based on NTRUSign which builded in the complexity of approximating the closest vector in NTRU lattices without certification for the smart mobile communication. In contrast to previous research, the result shows that the new scheme achieve such as efficiency that it may overcome the space obstacles and provide a real-world practical solution for some security issues in the smart mobile communication.

R&E 융합적 사례: IoT 기반 무선 디바이스 성형연구

본 연구는 이과계통의 고교생들과 함께 연구한 연구(RESEARCH) 및 교육(EDUCATION)의 사례연구이다. 최근 발달한 사물인터넷(IoT)[9-15] 기반의 여러 가지 연구주제가 존재한다. 본 연구는 이들 중 이동형 통신기기중 가장 초보단계이면서도 학생들이 쉽게 접하고 제작방법을 따라 갈 수 있는 무선 호출기의 성형과정을 연구 주제로 정하였다. 우리는 이것을 페이저라고 한다. 오늘날 복잡하고 빅 데이터를 사용할 수 있는 대용량 스마트 이동형 통신기기[9-15]가 나와 있다. 그 이전 무선 호출기는 우리 삶에 이동 통신 수단의 첫 의미를 가르쳐 준 기기였다. 내부 구조도 비교적 간단하고 기능도 비교적 단순하여 이제 막 대학의 이공계에 관심을 가진 고교생들의 교육 사례로 적합하다고 생각된다. 본 연구는 사출성형 해석의 ONE CAVITY해석이라는 비교적 간단한 내용으로 무선호출기의 기구, 전자적인 내용을 모두 살펴볼 수 있다. 나아가 학생들에게 대량생산 및 공정자동화에 대한 융합교육의 의미도 일깨워 줄 수 있는 좋은 교육 사례로 평가된다. This study is a case study of the research study and education with high school students of natural sciences. Recent development of the Internet of Things (IoT) based on the subject of various studies exist. This study is one of the most portable communication devices of these infancy, yet students were easy to define the molding process of contacting a pager that can go along way in making research topics. We called a pager. Today, it is given a large and complex smart mobile communication devices that can be used for big data. Prior pagers are taught the meaning of the first mobile communication means in our lives were given device. The internal structure is relatively simple and is thought to function relatively simple, just suitable as a teaching practices of high school students with an interest in science and engineering universities. This study can see all of the mechanical, electronic information contents of the radio pager in a relatively simple analysis of the injection molding ONE CAVITY analysis. Furthermore, the students also rated good educational practices that give meaning to remind the convergence training on mass production and process automation.

CCD 카메라 영상을 이용한 스마트 화재 영상 인식 시스템

본 연구에서는 유무선 TCP/IP 기능과 Pan/Tilt 기능을 갖는 Charge-Coupled Device (CCD) 카메라를 이용하여 화재발생 위치를 추적하고, 스마트 모바일 통신 기능을 탑재한 안드로이드 시스템에 실시간으로 정보를 전달하여 원거리에서 화재를 인식하고 재난을 제어할 수 있는 스마트 화재 인식 시스템을 제안하였다. 제안한 방법을 구현하기 위하여 첫째, 입력영상을 hue saturation intensity (HSI) 변환하여 주변 밝기와 잡영상들을 제거하여 순수한 화염만을 분할하는 알고리즘을 제안하였다. 둘째, Pan/Tilt 기능으로 화재가 발생한 위치를 정확하게 추적하여 적절하게 화재 인식을 할 수 있도록 하였다. 셋째, 모바일 기능을 탑재한 안드로이드 통신시스템으로 화재상황을 원격지에서도 확인할 수 있는 스마트한 화재 인식 시스템을 구현할 수 있도록 하였다. 제안한 방법을 확인하기 위하여 10개의 화재 동영상을 입력하고 실험을 수행한 결과 10개의 동영상에서 화재영역을 분할하고 화재 위치를 모두 추적하였다. This research suggested smart fire recognition system which trances firing location with CCD camera with wired/wire-less TCP/IP function and Pan/Tilt function, delivers information in real time to android system installed by smart mobile communication system and controls fire and disaster remotely. To embody suggested method, firstly, algorithm which applies hue saturation intensity (HSI) Transform for input video, eliminates surrounding lightness and unnecessary videos and segmentalized only firing videos was suggested. Secondly, Pan/Tilt function traces accurate location of firing for proper control of firing. Thirdly, android communication system installed by mobile function confirms firing state and controls it. To confirm the suggested method, 10 firing videos were input and experiment was conducted. As the result, all of 10 videos segmentalized firing sector and traced all of firing locations.

Decision-making in the Internet age: Opportunities to reshape our role in the OR and beyond

are likely to belong to the generation that witnessed the birth of the personal computer, smart mobile communication devices, wireless networks, the Internet and the World Wide Web. During the past decade, these information and communication technologies (ICTs) have triggered a dramatic transformation of major industries. In fact, banking, entertainment and tourism will probably never be the same now that online consumer services have been introduced. What effect are these ICTs having on the practice and teaching of medicine? What will be their impact on the future of anesthesia? In this session, participants will learn about: Leading organizations and initiatives that are promoting major transformation of the health system through the use of ICTs; New and emerging ICTs that could be used by anesthesiologists to improve the way in which they make decisions in the operating room and beyond; Efforts to overcome current barriers for the use of the Internet and other ICTs in busy clinical environments; and The impact that ICTs could have on the role of anesthesiologists within the health system, and on their relationship with other health professionals and the public. PLENARY R1