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deployment techniques in Wireless Sensor Networks, Coverage and Connectivity: A Survey

IEEE ACCESS 2019年 7卷 28940-28954页

作者： Farsi, Mohammed Elhosseini, Mostafa A. Badawy, Mahmoud Ali, Hesham Arafat Eldin, Hanaa Zain Taibah Univ Coll Comp Sci & Engn Yanbu 30012 Saudi Arabia Mansoura Univ Fac Engn Comp Engn & Control Syst Dept Mansoura 35516 Egypt

Wireless sensor networks (WSNs) have gained wide attention from researchers in the last few years because it has a vital role in countless applications. The main function of WSN is to process extracted data and to transmit it to remote locations. A large number of sensor nodes are deployed in the monitoring area. Therefore, deploying the minimum number of nodes that maintain full coverage and connectivity is of immense importance for research. Hence, coverage and connectivity issues, besides maximizing the network lifetime, represented the main concern to be considered in this paper. The key point of this paper is to classify different coverage techniques in WSNs into three main parts: coverage based on classical deployment techniques, coverage based on meta-heuristic techniques, and coverage based on self-scheduling techniques. Moreover, multiple comparisons among these techniques are provided considering their advantages and disadvantages. Additionally, performance metrics that must be considered in WSNs and comparison among different WSNs simulators are provided. Finally, open research issues, as well as recommendations for researchers, are discussed.

关键词： Coverage connectivity deployment techniques power consumption wireless sensor network (WSN)

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Review of QFD and related deployment techniques

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JOURNAL OF MANUFACTURING SYSTEMS 1998年第3期17卷 221-234页

作者： Prasad, B Elect Data Syst W Bloomfield MI USA

The paper reviews some historical developments in the quality function deployment (QFD) and extended house of quality (EHOQ) concepts that are popular for conveniently organizing product, process, and production planning information and for processing customer requirements. Since the inception of QFD in Japan in the early 1970s, it has met with varying degrees of success. This paper first reviews the literature and describes the EHOQ, which is a mature arrangement of QFD. Other related deployment techniques are examined, and a new concept called concurrent function deployment (CFD) is described. CFD is based on parallel deployment of several lifecycle "value plans" in addition ts the "quality plan" used in QFD. CFD thus gives rise to integrated templates, called house of values (HOV), which are compared to EHOQ templates. The differences and similarities between QFD and CFD are discussed.

关键词： quality function deployment (QFD) house of quality process planning production planning deployment techniques concurrent function deployment (CFD)

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A survey on deployment techniques, localization algorithms, and research challenges for underwater acoustic sensor networks

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INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS 2017年第17期30卷

作者： Tuna, Gurkan Gungor, V. Cagri Trakya Univ Dept Comp Programming TR-22020 Edirne Turkey Abdullah Gul Univ Dept Comp Engn TR-38039 Kayseri Turkey

In recent years, wireless sensor networks (WSNs) have attracted the attention of both the research community and the industry, and this has eventually lead to the widespread use of WSNs in various applications. The significant advancements in WSNs and the advantages brought by WSNs have also enabled the rapid development of underwater acoustic sensor networks (UASNs). In UASNs, in addition to deployment, determining the locations of underwater sensor nodes after they have been deployed is important since it plays a critical role in many applications. Various localization techniques have been proposed for UASNs, and each one is suitable for specific scenarios and has unique challenges. In this paper, after presenting an overview of potential UASN applications, a survey of the deployment techniques and localization algorithms for UASNs has been presented based on their major advantages and disadvantages. Finally, research challenges and open research issues of UASNs have been discussed to provide an insight into future research opportunities.

关键词： deployment techniques localization algorithms potential applications research challenges underwater acoustic sensor networks

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Underwater sensor networks: 'Comparative analysis on applications, deployment and routing techniques'

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IET COMMUNICATIONS 2020年第17期14卷 2859-2870页

作者： Gola, Kamal Kumar Gupta, Bhumika Uttarakhand Tech Univ Dept Comp Sci & Engn Dehra Dun 248007 Uttarakhand India Govind Ballabh Pant Inst Engn & Technol Dept Comp Sci & Engn Pauri Garhwal 246194 India

In today's scenario, underwater wireless sensor network (UWSN) has raised as a most famous research areas for the researchers due to its advancement in the real world. In UWSNs, the sensor nodes sense the environment, and then this sensed information is conveyed to one of the sink node and finally to the base station for processing. It is a known fact that nearly about 70% of the total earth surface is filled with the water. It is difficult for the humans to get the valuable information from the seabed. Major applications of UWSN are marine surveillance, sea monitoring, deep sea archaeology, oil monitoring etc. Major goal of this work is to provide the broad survey of underwater sensor networks with its application, deployment techniques and routing algorithms. This study also provides a comparative analysis of the deployment techniques and routing algorithms that will aid the researchers to find the research gaps in the deployment and routing techniques. Moreover, some of the UWSN applications also reviewed, which provides varied and valuable information about the UWSN approach. This study presents an overview about the conventional technologies of UWSN and its major focus is to present the significant research approaches towards the UWSNs' applications, deployment techniques, and routing process.

关键词： wireless sensor networks underwater acoustic communication telecommunication network routing research areas sensor nodes sensed information sink node total earth surface sea monitoring deep sea archaeology deployment techniques comparative analysis UWSN applications routing process underwater wireless sensor network

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An improved dynamic deployment technique based-on genetic algorithm (IDDT-GA) for maximizing coverage in wireless sensor networks

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JOURNAL OF AMBIENT INTELLIGENCE AND HUMANIZED COMPUTING 2020年第10期11卷 4177-4194页

作者： ZainEldin, Hanaa Badawy, Mahmoud Elhosseini, Mostafa Arafat, Hesham Abraham, Ajith Mansoura Univ Fac Engn Comp Engn & Control Syst Dept Mansoura 35516 Egypt Taibah Univ Coll Comp Sci & Engn Yanbu 30012 Saudi Arabia Machine Intelligence Res Labs MIR Labs Sci Network Innovat & Res Excellence Auburn AL USA

Recently, many researchers have paid attention to wireless sensor networks (WSNs) due to their ability to encourage the innovation of the IT industry. Although WSN provides dynamically scalable solutions with various smart applications, the growing need to maximize the area coverage with decreasing the percentage of deployed sensor nodes is still required. Random deployment is preferable for large areas that require a maximal number of nodes but result in coverage holes. As a result, mobile nodes are used to reduce coverage holes and maximize area coverage. The main objective of this study is to present an Improved Dynamic deployment Technique based-on Genetic Algorithm (IDDT-GA) to maximize the area coverage with the lowest number of nodes as well as minimizing overlapping area between neighboring nodes. A two-point crossover novel is introduced to demonstrate the notation of variable-length encoding. Simulation results reveal that the superiority of the proposed IDDT-GA compared with other state-of-the-art techniques. IDDT-GA has better coverage rates with 9.69% and a minimum overlapping ratio with 35.43% compared to deployment based on Harmony Search (HS). Also, IDDT-GA has minimized the network cost by 13% and 7.44% than Immune Algorithm (IA) and Whale Optimization Algorithm (WOA) respectively. Besides, it confirms its stability with 83.04% compared to maximizing coverage with WOA.

关键词： Coverage deployment techniques Genetic algorithm (GA) Whale optimization algorithm (WOA) Wireless sensor network (WSN) Quality of service (QoS)

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Modeling and Computational Analysis of the Hemodynamic Effects of Crossing the Limbs in an Aortic Endograft ("Ballerina" Position)

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JOURNAL OF ENDOVASCULAR THERAPY 2012年第4期19卷 549-557页

作者： Georgakarakos, Efstratios Xenakis, Antonios Manopoulos, Christos Georgiadis, George S. Tsangaris, Sokrates Lazarides, Miltos K. Democritus Univ Thrace Univ Hosp Alexandroupolis Dept Vasc Surg Alexandroupolis 68100 Greece Natl Tech Univ Athens Lab Biofluid Mech & Biomed Engn Sch Mech Engn GR-10682 Athens Greece

Purpose: To evaluate the displacement forces acting on an aortic endograft when the iliac limbs are crossed ("ballerina" position). Methods: An endograft model was computationally reconstructed based on data from a patient whose infrarenal aortic aneurysm had an endovascular stent-graft implanted with the iliac limbs crossed. Computational fluid dynamics analysis determined the maximum displacement force on the endograft and separately on the bifurcation and iliac limbs. Its analogue model was reconstructed for comparison, assuming the neck, main body, and total length constant but considering the iliac limbs to be deployed in the usual bifurcated mode. Calculations were repeated after developing "idealized" models of both the bifurcated and crossed-limbs endografts with straight main bodies and no neck angulation or curved iliac segments. Results: The vector of the total force was directed anterocaudal for both the typical bifurcated and the crossed-limbs configurations, with the forces in the latter slightly reduced and the vertical component accounting for most of the force in both configurations. Idealized crossed-limbs and bifurcated configurations differed only in the force on the iliac limbs, but this difference disappeared in the realistic models. Conclusion: Crossing of the iliac limbs can slightly affect the direction of the displacement forces. Although this configuration can exert larger forces on the limbs than in the bifurcated mode, this effect can be blunted by concomitant modifications in the geometry of the main body and other parts of the endograft, making its hemodynamic behavior resemble that of a typically positioned endograft. J Endovasc Ther. 2012;19:549-557

关键词： stent-graft bifurcated stent-graft deployment techniques iliac graft limbs hemodynamics migration forces crossed limbs configuration

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The Munich Valsalva Implantation Technique (MuVIT) for Cardiac Output Reduction During TEVAR: Vena Cava Occlusion With the Valsalva Maneuver

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JOURNAL OF ENDOVASCULAR THERAPY 2021年第1期28卷 7-13页

作者： Tsilimparis, Nikolaos Abicht, Jan-Michel Stana, Jan Konstantinou, Nikolaos Rantner, Barbara Banafsche, Ramin Fernandez Prendes, Carlota Ludwig Maximilians Univ Munchen Univ Hosp Dept Vasc Surg Munich Germany Ludwig Maximilians Univ Munchen Univ Hosp Dept Anesthesiol Munich Germany

Purpose To demonstrate a physiologically induced alternative to the typical methods of reducing cardiac output during deployment of stent-grafts in the aortic arch and proximal aorta. Technique A modified Valsalva maneuver, the Munich Valsalva implantation technique (MuVIT), to raise the intrathoracic pressure, minimize backflow, and reduce the cardiac output is illustrated in a patient undergoing a triple-branch thoracic endovascular aortic repair (TEVAR). During manual mechanical ventilation, the adjustable pressure-limiting valve is carefully closed to 25 mm Hg, creating "manual bloating" of the lungs and sustained apnea. The increased intrathoracic pressure causes compression of the vena cava and pulmonary veins, reducing the venous backflow and gradually decreasing the arterial pressure. Once the desired pressure is obtained, the stent-graft is accurately deployed. The airway pressure is thereupon slowly reduced, and the patient is taken back to normal ventilation. The procedure is then finished following standard practice. Conclusion The MuVIT is a simple, noninvasive technique for cardiac output reduction during aortic arch TEVAR, eliminating the need for other invasive techniques.

关键词： aortic arch cardiac output deployment techniques endograft positive end-expiratory pressure stent-graft thoracic endovascular aortic repair vena cava occlusion

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Comparison of a percutaneous separate stent endograft and a conventional thoracic stent-graft for endovascular repair of type B aortic dissection

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JOURNAL OF ENDOVASCULAR THERAPY 2004年第4期11卷 378-384页

作者： Park, S Min, PK Joung, B Ko, YG Choi, D Jang, Y Lee, DY Chang, BC Shim, WH Yonsei Univ Coll Med Ctr Cardiovasc Div Cardiol Seoul 120749 South Korea Yonsei Univ Coll Med Div Radiol Seoul 120749 South Korea Yonsei Univ Coll Med Div Chest Surg Seoul 120749 South Korea

Purpose: To compare the immediate and midterm outcomes of aortic dissection repair with a separate stent endograft (SSE) versus a conventionally constructed thoracic stent-graft. Methods: The records of 35 patients treated for type B aortic dissection from September 1997 to April 2003 were reviewed. Seventeen patients (12 men;mean age 58.8+/-11.6 years) underwent endovascular repair with a separate stent endograft (SSE), a custom-made device with a reduced profile suitable for percutaneous introduction through a 12-F sheath. Eighteen patients (10 men;mean age 56.1+/-12.8 years) underwent treatment with a conventional custom-made stent-graft. Results: Angiographic success was achieved in 13/17 (76.5%) of the SSE-treated patients and 12/18 (66.7%) for the conventional device group (p=0.521). Clinical success (complete obliteration/thrombosis of the false lumen) was achieved in 12/17 (70.6%) and 11/18 (61.1%), respectively (p=0.555). There were 2 cases of stent-graft movement during deployment and 2 access site complications in the conventional stent-graft group, whereas the SSE patients had no complications. Except for 2 conventional stent-graft patients who were lost to follow-up, all patients are alive at a mean 19.5+/-11.6 months for the SSE group and 34.2+/-21.5 months for the conventional stent-graft patients. Conclusions: The separate stent endograft can be deployed percutaneously without the need for blood pressure reduction, achieving accurate deployment without migration. In this small clinical experience, patients treated with the SSE had no access site complications and demonstrated midterm results comparable to the conventional stent-graft cohort, suggesting the possible usefulness of this device for the treatment of thoracic aortic dissection.

关键词： aortic dissection thoracic aorta stent-graft deployment techniques complications percutaneous delivery outcome analysis

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A double-barrel stent-graft for endovascular repair of the aortic arch

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JOURNAL OF ENDOVASCULAR THERAPY 2006年第1期13卷 72-76页

作者： Hiramoto, JS Schneider, DB Reilly, LM Chuter, TAM Univ Calif San Francisco Div Vasc Surg San Francisco CA 94143 USA

Purpose: To extend the role of endovascular aneurysm repair in the presence of angulation and dilatation of the distal arch that compromise the proximal implantation site. Case Report: A 70-year-old man with an asymptomatic 7-cm thoracic aortic aneurysm was treated with a TAG stent-graft. However, attempts to gain secure hemostatic implantation of the endograft resulted in inadvertent coverage of the subclavian and left carotid arteries. Flow to the left carotid artery was re-established by transcarotid insertion of a self-expanding covered stent alongside the primary stent-graft. Conclusion: This technique may have a role as an intended part of endovascular repair when there is no suitable implantation site in the descending thoracic aorta.

关键词： thoracic aortic aneurysm enclovascular repair proximal neck stent-graft deployment techniques

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Unmanned aerial vehicles: Applications, techniques, and challenges as aerial base stations

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INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS 2022年第9期18卷

作者： Rolly, Rinju Mariam Malarvezhi, Pandy Lagkas, Thomas D. SRM Inst Sci & Technol Fac Engn & Technol Dept Elect & Commun Engn Kattankulathur India Int Hellen Univ Dept Comp Sci Kavala Campus Kavala 65404 Greece

Next generation wireless networks are expected to be greatly supported by unmanned aerial vehicles, which can act as aerial base stations and constitute a promising solution for the exorbitant rise in user demands. This is possible because of unmanned aerial vehicle characteristics such as mobility, flexibility, increased line-of-sight probability, and their ability to access unreachable locations. Extensive research is now widely performed on the deployment, performance analysis, resource management, trajectory optimization, and channel modeling in such networks. This survey article focuses on the different applications and the related algorithms for realizing aerial base stations by thoroughly reviewing each related research area. In a nutshell, this article provides key applications, challenges, and the technology used for the design and analysis of unmanned aerial vehicles as base stations.

关键词： Aerial base stations cellular networks deployment techniques maritime communication optimization techniques

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