Journal articles: 'Ris communication'

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Odeyemi, Kehinde, Pius Owolawi, and Oladayo Olakanmi. "Reconfigurable Intelligent Surface in Wireless-Powered Interference-Limited Communication Networks." Symmetry 13, no. 6 (May 28, 2021): 960. http://dx.doi.org/10.3390/sym13060960.

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The commercialization of future wireless communication systems faces crucial problems in terms of reduced network cost of deployment and high power consumption. As a result, reconfigurable intelligent surfaces (RIS) have been suggested as a promising approach to overcome these existing challenges. In this paper, the performance of RIS in a wireless-powered interference-limited communication network is investigated. In this network, an energy-constrained access point (AP) is powered by a dedicated multiantenna power beacon (PB) and communicates to a destination limited-interference node via the RIS. It is assumed that the RIS experiences generalized-K fading distribution while the PB and interferers links are subjected to Nakagami-m fading distributions. To evaluate the system performance, the analytical closed-form expression of the probability distribution function (PDF) for the concerned system is derived. Through this, the exact closed-form expressions of the systems outage probability, average delay-tolerance throughput and average bit error rate are obtained. The analysis quantifies the effects of the number of reflecting elements in the RIS, number of interferer nodes, fading parameters on the AP and interferer links and number of antennas on the PB. It is deduced from the results that there is a kind of symmetry relationship between the analytical and simulation results. Additionally, the results illustrate that the proposed system with an RIS outperforms the conventional system without an RIS. Finally, the accuracy of the derived analytical expressions is validated through a Monte-Carlo simulation.

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Rezaei, Mohammad, AliReza Moradi, Mehdi Tehrani-Doost, HamidReza Hassanabadi, and Reza Khosrowabadi. "A pilot study on combining risperidone and pivotal response treatment on communication difficulties in children with autism spectrum disorder." Advances in Autism 4, no. 2 (April 3, 2018): 56–65. http://dx.doi.org/10.1108/aia-11-2017-0024.

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Purpose The purpose of this paper is to investigate the effects of combined risperidone (RIS) and pivotal response treatment (PRT) in children with autism spectrum disorder (ASD). Design/methodology/approach In all, 34 children diagnosed with ASD (mean age of 12.36 years) were randomly divided into two groups: an RIS treatment group (n=18) and an RIS plus PRT (n=16). Communication skills were evaluated with the child communication checklist (CCC). Findings Total score of the CCC was increased in both groups after three months compared with the score prior to treatment. The total score of the CCC was significantly higher in the combined treatment group than in the RIS group. Originality/value Treatment with RIS combined with PRT may result in a better outcome in communication skill for children with autism than RIS training alone.

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Shi, Wenming, Yang Liu, Zhangyou Peng, Mengnan Xu, and Zhonghao Zhang. "The Design of Deploying RIS for Millimetre-Wave Signal in Outdoor Environment." Wireless Communications and Mobile Computing 2021 (March 30, 2021): 1–6. http://dx.doi.org/10.1155/2021/6651963.

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The power coverage of wireless communication is crucial for the quality of communication and cell network evaluation. In this letter, by taking the layout of Reconfigurable Intelligent Surface (RIS) into count, the power coverage area is proposed for a typical outdoor scenario, which has many rectangular buildings. In this approach, via designing the deploying angle, we introduce finding the optimal horizontal and elevation angles of RIS; we adjust RIS so as to get more power coverage. Since the computational complexity of the optimal solution is very high, a low-complexity method is proposed for solving the optimization problem. More specifically, the coverage is showed in the urban environment with RIS assisting. Presenting the numerical results, we can find the power coverage notably improved. It clearly indicates that our experiment is useful to solve the coverage problem for wireless communication.

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Mathien, Michel. "L'emprise de la communication de guerre." Revue internationale et stratégique 56, no. 4 (2004): 89. http://dx.doi.org/10.3917/ris.056.0089.

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Setyawan, Nurhuda Hendra, and Yana Supriatna. "Implementasi Picture Archiving and Communication System (PACS) dan Radiology Information System (RIS) di RSUP Dr. Sardjito Yogyakarta." Jurnal Radiologi Indonesia 1, no. 4 (May 1, 2016): 260–74. http://dx.doi.org/10.33748/jradidn.v1i4.35.

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Picture Archiving and Communication System (PACS) is an inter-and intra-institution computing system that manages the acquisition, transmission, storage, distribution, display, and interpretation of medical images. Advances in radiology informatics to date, including the integration of PACS and Radiology Information System (RIS) to department work?ow, has done much to improve the efciency of the department. PACS component includes image acquisition modality, network system, archiving system, image viewer system, radiology information system, and remote access. Acceptance testing is an important thing to be done before a user entirely accepts PACS and RIS system in a daily radiology practice.The purpose of this article is to deliver an important specifcation and the desired options and features of modern PACS, related to acquisition, archives and display system; connectivity of Radiology Information System (RIS); and distribution of images inside and outside the hospital. Some major practical issues that must be considered in the implementation of PACS and RIS will also be discussed. In addition, it will also discuss the process of implementation of PACS and RIS at Dr. Sardjito Hospital

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Nissen-Meyer, S., C. Pistitsch, U. Fink, M. Reiser, and K. Adelhard. "Functional Requirements for a HIS-RIS-PACS-Interface Design, Including Integration of “Old” Modalities." Methods of Information in Medicine 38, no. 01 (1999): 01–08. http://dx.doi.org/10.1055/s-0038-1634149.

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Abstract:Radiology, Information Systems (RIS) and Picture Archiving Systems (PACS), have the potential for immense rationalization of operations in radiology and hence for the improvement of health care, as well as the return of investments. These systems must, however, be carefully designed such that they support routine work rather than being an additional burden to radiology staff. Analyses show that comprehensive communication of patient demographic and clinical data between RIS, PACS and Hospital Information Systems (HIS) are necessary prerequisites to achieve cost effectiveness. Based on analyses of radiology operations in a large university primary care hospital, functional requirements and data structures for designing HIS/RIS/PACS interfaces are presented. These concern communication of past examinations, associated written reports and images, appointment scheduling, requests of new examinations, digitizing old analog X-ray films, access from RIS/PACS to other clinical data, and transfer of new radiology reports and relevant images. Consistency of all redundant data stored in the three systems is essential. A pragmatic, safe and inexpensive method of electronically integrating “old” modalities not fully ”PACS capable“ in the HIS/RIS/PACS world is presented.

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Yang, Liang, Jinxia Yang, Wenwu Xie, Mazen O. Hasna, Theodoros Tsiftsis, and Marco Di Renzo. "Secrecy Performance Analysis of RIS-Aided Wireless Communication Systems." IEEE Transactions on Vehicular Technology 69, no. 10 (October 2020): 12296–300. http://dx.doi.org/10.1109/tvt.2020.3007521.

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Cui, Zhuangzhuang, Ke Guan, Jiayi Zhang, and Zhangdui Zhong. "SNR Coverage Probability Analysis of RIS-Aided Communication Systems." IEEE Transactions on Vehicular Technology 70, no. 4 (April 2021): 3914–19. http://dx.doi.org/10.1109/tvt.2021.3063408.

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Brauman, Rony. "La communication des ONG : une affaire d'États ?" Revue internationale et stratégique 56, no. 4 (2004): 109. http://dx.doi.org/10.3917/ris.056.0109.

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Da Lage, Olivier. "La communication, au c?ur de la décision." Revue internationale et stratégique 56, no. 4 (2004): 59. http://dx.doi.org/10.3917/ris.056.0059.

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Bouhlel, Asma, and Anis Sakly. "Impact of IQ Imbalance on RIS-Assisted SISO Communication Systems." Wireless Communications and Mobile Computing 2021 (August 11, 2021): 1–12. http://dx.doi.org/10.1155/2021/6673807.

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Reconfigurable intelligent surface (RIS) for wireless networks has emerged as a promising future transmission technique to create smart radio environments that improve the system performance by turning the wireless channel into an adjustable system block. However, transceivers come with various hardware impairments, such as phase noise and in-phase/quadrature-phase imbalance (IQI). Hence, for robust configuration of RIS-based communication under practical conditions, assuming the identical performance analysis when subject to IQI, will lead to inaccurate analysis. In this paper, the implementation of this novel transmission technique is thoroughly investigated under intensive realistic circumstances. For this purpose, based on the maximum likelihood (ML) detector, a novel analytical expression of average pairwise error probability under IQI is proposed and compared to the standard ML detector. Further, the proposed analytical approaches are confirmed by numerical simulations.

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Youn, Janghyuk, Woong Son, and Bang Chul Jung. "Physical-Layer Security Improvement with Reconfigurable Intelligent Surfaces for 6G Wireless Communication Systems." Sensors 21, no. 4 (February 19, 2021): 1439. http://dx.doi.org/10.3390/s21041439.

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Recently, reconfigurable intelligent surfaces (RISs) have received much interest from both academia and industry due to their flexibility and cost-effectiveness in adjusting the phase and amplitude of wireless signals with low-cost passive reflecting elements. In particular, many RIS-aided techniques have been proposed to improve both data rate and energy efficiency for 6G wireless communication systems. In this paper, we propose a novel RIS-based channel randomization (RCR) technique for improving physical-layer security (PLS) for a time-division duplex (TDD) downlink cellular wire-tap network which consists of a single base station (BS) with multiple antennas, multiple legitimate pieces of user equipment (UE), multiple eavesdroppers (EVEs), and multiple RISs. We assume that only a line-of-sight (LOS) channel exists among the BS, the RISs, and the UE due to propagation characteristics of tera-hertz (THz) spectrum bands that may be used in 6G wireless communication systems. In the proposed technique, each RIS first pseudo-randomly generates multiple reflection matrices and utilizes them for both pilot signal duration (PSD) in uplink and data transmission duration (DTD) in downlink. Then, the BS estimates wireless channels of UE with reflection matrices of all RISs and selects the UE that has the best secrecy rate for each reflection matrix generated. It is shown herein that the proposed technique outperforms the conventional techniques in terms of achievable secrecy rates.

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Yang, Liang, Fanxu Meng, Jiayi Zhang, Mazen O. Hasna, and Marco Di Renzo. "On the Performance of RIS-Assisted Dual-Hop UAV Communication Systems." IEEE Transactions on Vehicular Technology 69, no. 9 (September 2020): 10385–90. http://dx.doi.org/10.1109/tvt.2020.3004598.

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Zhou, Gui, Cunhua Pan, Hong Ren, Kezhi Wang, and Zhangjie Peng. "Secure Wireless Communication in RIS-Aided MISO System With Hardware Impairments." IEEE Wireless Communications Letters 10, no. 6 (June 2021): 1309–13. http://dx.doi.org/10.1109/lwc.2021.3064992.

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Ni, Yiyang, Yaxuan Liu, Jue Wang, Qin Wang, Haitao Zhao, and Hongbo Zhu. "Performance Analysis for RIS-Assisted D2D Communication Under Nakagami-$m$ Fading." IEEE Transactions on Vehicular Technology 70, no. 6 (June 2021): 5865–79. http://dx.doi.org/10.1109/tvt.2021.3077805.

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Xu, Meng, Shun Zhang, Caijun Zhong, Jianpeng Ma, and Octavia A. Dobre. "Ordinary Differential Equation-Based CNN for Channel Extrapolation Over RIS-Assisted Communication." IEEE Communications Letters 25, no. 6 (June 2021): 1921–25. http://dx.doi.org/10.1109/lcomm.2021.3064596.

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Lisaj, Andrzej. "Implementation of the Multifunctional Communication System for RIS Center Supporting Inland Navigation." TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation 15, no. 3 (2021): 605–8. http://dx.doi.org/10.12716/1001.15.03.14.

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Liu, Biao, Baogao Tan, Lidi Huang, Jingxin Wei, Xulin Mo, Jintian Zheng, and Hanchuan Luo. "Intelligent Algorithm-Based Picture Archiving and Communication System of MRI Images and Radiology Information System-Based Medical Informatization." Contrast Media & Molecular Imaging 2021 (September 17, 2021): 1–9. http://dx.doi.org/10.1155/2021/4997329.

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Objective. The study aimed to explore the application value of picture archiving and communication system (PCAS) of MRI images based on radial basis function (RBF) neural network algorithm combined with the radiology information system (RIS). Methods. 551 patients who required MRI examination in a hospital from May 2016 to May 2021 were selected as research subjects. Patients were divided into two groups according to their own wishes. Those who were willing to use the RBF neural network algorithm-based PCAS of MRI images combined with RIS were set as the combined group, involving a total of 278 cases; those who were unwilling were set as the regular group, involving a total of 273 cases. The RBF neural network algorithm-based PCAS of MRI images combined with RIS was trained and tested for classification performance and then used for comparison analysis. Result. The actual output (0.031259–0.038515) of all test samples was almost the same as the target output (0.000000) ( P > 0.05). In the first 50,000 learnings, the iteration error of the RBF neural network dropped rapidly and finally stabilized at 0.038. The classification accuracy of the RBF neural network algorithm-based PCAS of MRI images combined with RIS for the head was 94.28%, that of abdomen was 97.22%, and it was 93.10% for knee joint, showing no statistically significant differences ( P > 0.05), and the total classification accuracy was as high as 95%. The time spent in the examination in the combined group was about 2 hours, and that in the regular group was about 4 hours ( P > 0.05). The satisfaction of the combined group (96.76%) was significantly higher than that of the control group (46.89%) ( P > 0.05). Conclusion. The RBF neural network has good classification performance for MRI images. To incorporate intelligent algorithms into the medical information system can optimize the system. RBF has good application prospects in the medical information system, and it is worthy of continuous exploration.

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Yang, Liang, Yin Yang, Mazen O. Hasna, and Mohamed-Slim Alouini. "Coverage, Probability of SNR Gain, and DOR Analysis of RIS-Aided Communication Systems." IEEE Wireless Communications Letters 9, no. 8 (August 2020): 1268–72. http://dx.doi.org/10.1109/lwc.2020.2987798.

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Michailidis, Emmanouel T., Nikolaos I. Miridakis, Angelos Michalas, Emmanouil Skondras, and Dimitrios J. Vergados. "Energy Optimization in Dual-RIS UAV-Aided MEC-Enabled Internet of Vehicles." Sensors 21, no. 13 (June 27, 2021): 4392. http://dx.doi.org/10.3390/s21134392.

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Mobile edge computing (MEC) represents an enabling technology for prospective Internet of Vehicles (IoV) networks. However, the complex vehicular propagation environment may hinder computation offloading. To this end, this paper proposes a novel computation offloading framework for IoV and presents an unmanned aerial vehicle (UAV)-aided network architecture. It is considered that the connected vehicles in a IoV ecosystem should fully offload latency-critical computation-intensive tasks to road side units (RSUs) that integrate MEC functionalities. In this regard, a UAV is deployed to serve as an aerial RSU (ARSU) and also operate as an aerial relay to offload part of the tasks to a ground RSU (GRSU). In order to further enhance the end-to-end communication during data offloading, the proposed architecture relies on reconfigurable intelligent surface (RIS) units consisting of arrays of reflecting elements. In particular, a dual-RIS configuration is presented, where each RIS unit serves its nearby network nodes. Since perfect phase estimation or high-precision configuration of the reflection phases is impractical in highly mobile IoV environments, data offloading via RIS units with phase errors is considered. As the efficient energy management of resource-constrained electric vehicles and battery-enabled RSUs is of outmost importance, this paper proposes an optimization approach that intends to minimize the weighted total energy consumption (WTEC) of the vehicles and ARSU subject to transmit power constraints, timeslot scheduling, and task allocation. Extensive numerical calculations are carried out to verify the efficacy of the optimized dual-RIS-assisted wireless transmission.

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Ando, Yutaka. "For Seamless Communication between EMR, RIS and PACS-Future Possibility and Effectiveness of IHE-." Japanese Journal of Radiological Technology 64, no. 1 (2008): 96–104. http://dx.doi.org/10.6009/jjrt.64.96.

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Wang, Xinyi, Zesong Fei, Zhong Zheng, and Jing Guo. "Joint Waveform Design and Passive Beamforming for RIS-Assisted Dual-Functional Radar-Communication System." IEEE Transactions on Vehicular Technology 70, no. 5 (May 2021): 5131–36. http://dx.doi.org/10.1109/tvt.2021.3075497.

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Zhang, Jun, Jie Liu, Shaodan Ma, Chao-Kai Wen, and Shi Jin. "Large System Achievable Rate Analysis of RIS-Assisted MIMO Wireless Communication With Statistical CSIT." IEEE Transactions on Wireless Communications 20, no. 9 (September 2021): 5572–85. http://dx.doi.org/10.1109/twc.2021.3068494.

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Lisaj, Andrzej, Andrzej Smacki, and Janusz Uriasz. "The BICS — Advanced Method of the Electronic Ship Reporting for the RIS Centre." Annual of Navigation 24, no. 1 (December 1, 2017): 231–43. http://dx.doi.org/10.1515/aon-2017-0017.

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Abstract The article presents principles of transmission and processing of the data in electronic reporting of river ships used in inland navigation. The new standard of electronic reporting of ships was shown — system Barge Information and Communication System (BICS). Results and analysis of surveys of real duplex transmission of data in BICS system for purpose of RIS Centre were presented.

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Azevedo-Marques, Paulo Mazzoncini de, Edilson Carlos Caritá, Alexander Antonio Benedicto, and Pablo Rodrigo Sanches. "Integração RIS/PACS no Hospital das Clínicas de Ribeirão Preto: uma solução baseada em "web"." Radiologia Brasileira 38, no. 1 (February 2005): 37–43. http://dx.doi.org/10.1590/s0100-39842005000100009.

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OBJETIVO: Integração dos Sistemas de Informação em Radiologia (RIS - "Radiology Information System") e de Arquivamento e Comunicação de Imagens (PACS - "Picture Archiving and Communication System") no Serviço de Radiodiagnóstico do Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, para possibilitar a consulta remota de laudos e imagens associadas. MATERIAIS E MÉTODOS: A integração RIS/PACS implementada é feita em tempo real, no momento da consulta, utilizando tecnologias "web" e técnicas de programação para "intranet/internet". RESULTADOS: A aplicação "web" permite a consulta pela "intranet" do hospital dos laudos de exames e imagens associadas através de nome, sobrenome, número de registro hospitalar dos pacientes ou por modalidade, dentro de um determinado período. O visualizador possibilita que o usuário navegue pelas imagens, podendo realizar algumas funções básicas como "zoom", controle de brilho e contraste e visualização de imagens lado a lado. CONCLUSÃO: A integração RIS/PACS diminui o risco de inconsistências, através da redução do número de interfaces entre bases de dados com grande redundância de informação, proporcionando um ambiente de trabalho rápido e seguro para consulta de laudos radiológicos e visualização de imagens associadas.

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Georgiou, A., S. Lymer, A. Hordern, L. Ridley, J. Westbrook, and M. Prgomet. "The impact of a health IT changeover on Medical Imaging Department work processes and turnaround times." Applied Clinical Informatics 06, no. 03 (2015): 443–53. http://dx.doi.org/10.4338/aci-2015-01-ra-0014.

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SummaryObjectives: To assess the impact of introducing a new Picture Archiving and Communication System (PACS) and Radiology Information System (RIS) on: (i) Medical Imaging work processes; and (ii) turnaround times (TATs) for x-ray and CT scan orders initiated in the Emergency Department (ED).Methods: We employed a mixed method study design comprising: (i) semi-structured interviews with Medical Imaging Department staff; and (ii) retrospectively extracted ED data before (March/ April 2010) and after (March/April 2011 and 2012) the introduction of a new PACS/RIS. TATs were calculated as: processing TAT (median time from image ordering to examination) and reporting TAT (median time from examination to final report).Results: Reporting TAT for x-rays decreased significantly after introduction of the new PACS/RIS; from a median of 76 hours to 38 hours per order (p<.0001) for patients discharged from the ED, and from 84 hours to 35 hours (p<.0001) for patients admitted to hospital. Medical Imaging staff reported that the changeover to the new PACS/RIS led to gains in efficiency, particularly regarding the accessibility of images and patient-related information. Nevertheless, assimilation of the new PACS/RIS with existing Departmental work processes was considered inadequate and in some instances unsafe. Issues highlighted related to the synchronization of work tasks (e.g., porter arrangements) and the material set up of the work place (e.g., the number and location of computers).Conclusions: The introduction of new health IT can be a “double-edged sword” providing improved efficiency but at the same time introducing potential hazards affecting the effectiveness of the Medical Imaging Department.Citation: Georgiou A, Prgomet M, Lymer S, Hordern A, Ridley4 L, Westbrook J.The impact of a health IT changeover on Medical Imaging Department work processes and turnaround times: a mixed method study. Appl Clin Inform 2015; 6: 443–453http://dx.doi.org/10.4338/ACI-2015-01-RA-0014

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Konstantinidis, Kleanthis, and Ioannis Apostolakis. "Investigation of RIS/PACS Information Systems’ Incorporation in Greek Public Hospitals." Radiography Open 6, no. 1 (December 12, 2020): 32–44. http://dx.doi.org/10.7577/radopen.4007.

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Purpose: The objective of this study is to assess the current level of Radiological Information Systems (RIS) and Picture Archiving and Communication Systems (PACS) incorporation in greek public hospitals through a national web-based survey. Since there are no previous studies on this field of medical imaging management in Greece, we look forward to export useful conclusions about RIS/PACS incorporation and set the foundation for further investigation. Material and Methods: A comprehensive measurement instrument that integrates the existing theoretical and empirical literature knowledge on Information Systems (IS) evaluation was properly modified and used for the purpose of this study. A web-based survey was conducted via Google Form questionnaire, which was distributed to the entire population of radiologists and radiologic technologists (potential users) of all greek public hospitals (urban and rural), in order to identify the availability of RIS/PACS Information Systems (IS), the level of incorporation through system’s impact on users satisfaction and their operating capacities (i.e. computerized activities and processes). Results: A total of 49 valid responses out of 77 collected questionnaires were received from all 124 greek public hospitals, which represents a response rate of 39.5%. Our very first findings indicate that establishment of RIS/PACS has not been fulfilled so far for the vast majority of greek public hospitals. Almost half of the participants (51%) responded that they use only the capabilities of PACS as a repository for medical images, instead of implementing all capabilities of RIS. Also, although 85.7% of the participants responded that they use disc publisher for medical imaging exams copies, only 6.1% responded that has gone totally filmless or paperless. 59.2% of the respondents has access to 5 or more workstations and 100% of the respondents agrees that ER and clinics should connect on hospital's RIS/PACS for viewing medical images, receiving electronic reports and updating patients' electronic files. Overall findings from statistical techniques demonstrate a statistically significant difference in perceived information (p-value=0.021) and service quality (p-value=0.036) with age of respondents. Finally, open feedback answers indicate that greek public hospitals have still many to set to successfully incorporate and exploit the wide range of RIS/PACS capabilities to improve quality, effectiveness and efficiency of patient care services. Discussions: Although, most of the respondents have an adequate level in the operation of information systems, lack of RIS/PACS usage training is noted, as well as users’ support from their own organization IT staff. Also, structural deficiencies worry system’s users, making them intolerant to adopting the system in daily practice. The recommendations of this study include RIS/PACS incorporation in every medical imaging department of greek hospitals, users training and support, as well as updating infrastructures where needed.

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Rodríguez-Priego, Nuria, Francisco J. Montoro Ríos, and Nikolaos Georgantzís. "Percepción del riesgo y compromiso por reducir el cambio climático global en España." Revista Internacional de Sociología 72, no. 1 (April 30, 2014): 173–200. http://dx.doi.org/10.3989/ris.2012.08.03.

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Una encuesta online a la población española (n = 602) examina los factores que predicen el apoyo al compromiso con el medio ambiente por parte de los participantes para reducir el cambio climático global. Se realizó una regresión múltiple jerárquica en cuatro pasos y se testó el modelo de ecuaciones estructurales propuesto. En la encuesta se aplicó una herramienta diseñada por el Yale Project on Climate Change Communication con la finalidad de construir escalas para las variables introducidas en el estudio. Los resultados muestran que la efectividad percibida por el consumidor y el riesgo percibido son factores determinantes del apoyo al compromiso para reducir el cambio climático global. No obstante, se encontraron algunas diferencias en cuanto a la influencia de otros factores tales como las variables socio-demográficas, la visión de la naturaleza y la cognición cultural.

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Cervantes Trejo, Arturo, Sophie Domenge Treuille, and Isaac Castañeda Alcántara. "Implementing an Integrated Large-Scale Clinical Information System for ISSSTE’s Hospital Network in Mexico." SN Comprehensive Clinical Medicine 3, no. 2 (January 24, 2021): 444–53. http://dx.doi.org/10.1007/s42399-020-00713-2.

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AbstractThe Institute for Security and Social Services for State Workers (ISSSTE) is a large public provider of health care services that serve around 13.2 million Mexican government workers and their families. To attain process efficiencies, cost reductions, and improvement of the quality of diagnostic and imaging services, ISSSTE was set out in 2019 to create a digital filmless medical image and report management system. A large-scale clinical information system (CIS), including radiology information system (RIS), picture archiving and communication system (PACS), and clinical data warehouse (CDW) components, was implemented at ISSSTE’s network of forty secondary- and tertiary-level public hospitals, applying global HL-7 and Digital Imaging and Communications in Medicine (DICOM) standards. In just 5 months, 40 hospitals had their endoscopy, radiology, and pathology services functionally interconnected within a national CIS and RIS/PACS on secure private local area networks (LANs) and a secure national wide area network (WAN). More than 2 million yearly studies and reports are now in digital form in a CDW, securely stored and always available. Benefits include increased productivity, reduced turnaround times, reduced need for duplicate exams, and reduced costs. Functional IT solutions allow ISSSTE hospitals to leave behind the use of radiographic film and printed medical reports with important cost reductions, as well as social and environmental impacts, leading to direct improvement in the quality of health care services rendered.

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D'Attoma, N., P. L. Pavan, M. Bertocco, and P. Dompieri. "Management of image information." Urologia Journal 61, no. 1 (February 1994): 51–54. http://dx.doi.org/10.1177/039156039406100111.

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Medical imaging has become a major investigation tool during the last few years, due to availability of several digitalised imaging modalities (Computed Tomography, Magnetic Resonance, etc.). Interest has grown in medical image management by appropriate information systems. These processing tools defined PACS - systems of acquisition, storage, transmission and communication - must be integrated on the one hand with the RIS - radiological information system (patient, appointment procedure) - and on the other hand with the HIS - hospital information system - to offer sufficient advantages to justify their installation.

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Ahmadi, Herry. "Improving Productivity of Radiology Department." ACMIT Proceedings 1, no. 1 (March 18, 2019): 112–20. http://dx.doi.org/10.33555/acmit.v1i1.12.

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Over the years, impact of digitalization has been implemented in every aspect of human life, including the healthcare and hospital environment. Vendors and manufacturer are making the competition to implement to be the highest, the fastest, and the best solutions to the market and become the world leader that can attract the hospital and healthcare facility to use their system and their products. However all of the digital equipment are not standardize, the integration of system, data management and archive are the main problems in Radiology department eventhough using standard medical image (DICOM) protocol. We propose digital solutions in Radiology department that implemented using known as RIS or Radiology Information System and PACS or Picture Archive Communication System that using open source software and easily adaptable technology with no boundaries of applications and vendor neutral. Our paper shows that through digital solutions provided by radiology department will improve the productivity of doctor, radiographer and administration people. Digitalization products with RIS and PACS also answer the needs of speed and manageable image storage in the hospital.

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Bracco, Stefano, Federico Delfino, Paola Laiolo, and Andrea Morini. "Planning & Open-Air Demonstrating Smart City Sustainable Districts." Sustainability 10, no. 12 (December 6, 2018): 4636. http://dx.doi.org/10.3390/su10124636.

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The article is focused on the “demonstration” activities carried out by the University of Genoa at Savona Campus facilities in order to implement the “Living Lab Smart City”. The idea is to transform the Savona Campus in a Living Lab of the City of the Future: smart technologies in Information and Communication Technology (ICT) and energy sectors were installed in order to show a real application of the Smart City concept to population and external stakeholders. Moreover, special attention was given to the environment, personal wellbeing, and social equalities. The sustainable energy Research Infrastructures (RIs) of Savona Campus allowed enhancement of the applied research in degree programs and the collaboration with several companies. In particular, an important partnership with the Italian electric Distribution System Operator (DSO), ENEL S.p.A., started in 2017 to test the capability of these RIs to operate disconnected from the National Grid, relying only on the supply of renewables and storage systems. The “Living Lab Smart City” is an important action to reduce the carbon footprint of the Savona Campus and to increase the awareness of students, teachers and researchers towards Sustainable Development in Higher Education Institutes.

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Hernandez-Carrion, Jose Rodolfo. "In Memoriam por el “maestro” Lorenzo Ferrer Figueras. Los Modelos Sistémicos aplicados en el proceso de balcanización y contradicción global. Algunas ilustraciones para entender el Paradigma Sistémico en un marco de Complejidad-In Memoriam: Lorenzo Ferrer Figueras. Systemic Models applied to balkanization process and global contradictions. Illustrations to understand Systemic Paradigm within a framework of Complexity." Revista Internacional de Sistemas 21, no. 1 (February 20, 2018): 3. http://dx.doi.org/10.7203/ris.21.1.11539.

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Abstract: The crucial problem that Science has to face today is to successfully cope with the growing complexity of society. To understand the system to which we belong to, it is necessary to understand the nature of interdependence: the greater the interdependence is, the greater the need for communication and cooperation. The European model, which initially promised to be a social and regional model, decentralized and democratic, is blocked. A situation that we can describe as no-evolution, that Spain also suffers at the same time as Europe, when it comes to progress towards a mature and democratic state, what was expected since the beginning of the transition to democracy. The debate can be thought from the “European Committee of the Regions” (CoR) or “Europe of the regions”, or dismantle that topic, which would entail an involution from the reduction of decentralization and heterogeneity that sustains a higher complexity. Resumen: El problema crucial que la Ciencia tiene que encarar hoy es hacer frente con éxito a la complejidad creciente de la sociedad. Para entender el sistema al que pertenecemos, es necesario comprender la naturaleza de la interdependencia: mientras mayor sea la interdependencia, mayor será la necesidad de comunicación y cooperación. El modelo europeo, que inicialmente prometía ser un modelo social y regional, descentralizado y democrático, está bloqueado. Una situación que podemos calificar de no evolución, que paralelamente también sufre España como Europa, a la hora de progresar hacia un estado maduro y democrático, lo que se apuntaba en el principio de la transición hacia la democracia. El debate cabe pensarlo desde el “Comité Europeo de las Regiones” (CoR) o la “Europa de las regiones”, o desmontar ese tópico, lo que conllevaría una involución a partir de la reducción de descentralización y heterogeneidad que sostiene una superior complejidad.

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Boiron, Pierre, and Valère Dussaux. "Software Services Delivered from the Cloud." International Journal of Information Systems in the Service Sector 7, no. 1 (January 2015): 22–37. http://dx.doi.org/10.4018/ijisss.2015010102.

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Picture Archiving and Communication Systems (PACS), alongside Radiological Information Systems (RIS) are nowadays widely disseminated, proven useful, hospital information systems components. The “Région Sans Film” (“Filmless Region”) program was launched in 2009 by the French ministry of health in order to help the generalization to all healthcare structures such as hospitals or general physician practices, of PACS, RIS, and archiving of medical images. It is done by means of a mutualized service platform whom building and running has been entrusted to an industrial consortium. This platform implements the latest technologies of medical image processing and of cloud computing. It is built in order to support service-oriented enterprise architecture composed of one main layer of software services. This natively scalable platform is innovative because it is the first one which contains all the materials for the implementation of all services in the cloud. The corresponding SLA are defined in order to be adaptable to the needs of further health structures which could later join the platform by participating in its mutualized purchasing. The goal is not only to share the costs but also to deliver new images sharing services. New business processes/services around sharing of images such as teleradiology or access to the images produced in hospitals to the general practitioners are defined towards the exercise of real filmless radiology.

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Donnadieu, Gérard. "Au fil de la Revue Internationale de Systémique : Les concepts de la systémique appliqués à la gestion des crises." Acta Europeana Systemica 8 (July 10, 2020): 139–46. http://dx.doi.org/10.14428/aes.v8i1.56323.

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Au cours de ses douze années d’existence, la Revue Internationale de Systémique (RIS) a publié plusieurs articles de fond, de nature épistémologique, sur l’approche systémique et ses concepts.L’auteur de cette communication se propose de reprendre brièvement les plus importants de ces articles afin de rechercher s’ils font apparaître une évolution dans la définition et le traitement d’un certain nombre de concepts clefs de la systémique, en particulier ceux relatifs à la gestion des crises, aux problèmes de conduite du changement, aux phénomènes d’émergence. Par exemple, observe-t-on au cours de ces douze ans, un approfondissement, une simple continuité logique ou une rupture paradigmatique dans la manière d’aborder ces notions ? Et cela aussi bien au niveau des systèmes artificiels, des systèmes vivants et des systèmes humains et sociaux ?

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Suandari, P. V. L., I. Putu Eka Juliantara, and Erni R. Rusmana. "Peran Implementasi Picture Archiving and Communication System dalam Pelayanan Radiologi di Rumah Sakit Premier Bintaro." Jurnal Manajemen Kesehatan Indonesia 8, no. 3 (December 28, 2020): 161–66. http://dx.doi.org/10.14710/jmki.8.3.2020.161-166.

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Premier Bintaro Hospital is equipped with High-end modalities with various types of advanced radiological examinations. There are several service centers that require continuous imaging support, such as vascular centers, Pain Centers, Spine centers and others. Integrated storage and access to patient data is needed to improve work efficiency. With the implementation of Picture Archiving And Communication System (PACS) in Radiology Unit, there are improvements in services and increased productivity when compared to previous system. This research will discuss a number of issues related to the role of PACS in Radiology services as evaluation material for services compared with the system before PACS is implemented. This research was made to determine the role of PACS in Premier Bintaro Hospital. This research is prepared with literature review, observation, and documentation. The application of PACS in Premier bintaro Hospital basically has the same workflow compared to workflows in general. Application of HL7 interface System which is equipped with DMWL makes PACS applied will integrated properly with HIS / RIS. The advantages of implementing PACS are more on data integration, storage, data editing, and presentation of data in digital form. The lack of PACS is more focused on the stability of the connection as the basis of the data transportation path needed. The challenge faced in the future is the problem of strengthening the stability of connection and education to users related.

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Ardhana, Valian Yoga Pudya, Esther Sanda Manapa, Tommy Wijaya Sagala, Yonathan Anggian Sihaan, and Eliyah Acantha M. Sampetoding. "Evaluasi Kinerja Protokol Perutean AODV dan SDGR+R pada VANET dengan Studi Kasus Pelabuhan Lembar." JTIM : Jurnal Teknologi Informasi dan Multimedia 2, no. 1 (May 28, 2020): 59–67. http://dx.doi.org/10.35746/jtim.v2i1.76.

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The Vehicular ad-hoc Network (VANET) is a subclass of Mobile ad-hoc networks (MANETs).VANET is a wireless network created from the concept of building a vehicle network (node) toexchange data information (data communication). There is a new concept technique forVANET communication used, namely the use of the concept of Software Defined Network(SDN) on VANET. For data communication between vehicles, a routing protocol required. Themost common routing protocol used on VANET since 2003 is AODV. In 2014 several studieswere using the SDN paradigm tried on VANET technology to improve the performance ofQuality of Service (QoS), one of which is a Geographic-based SDN, called SDGR in 2016.Multicast is a method of routing data on a network that allows one node or a group of nodes tocommunicate efficiently with the receiving node. The multicast concept supports one-to-manyrouting in nodes that send packet data to a group of nodes. The development of the SDGRrouting protocol using the idea of multicast technique to SDGR based on the Direction calledSDGR + R carried out in 2019. This study uses a case study of vehicle transportationsimulations in the Lamber Port area of Lombok. The simulation results knew that SDGR + Ris better than AODV in terms of service quality (QoS) at a latency of 15.58% and packet deliveryratio (PDR) of 47.78%.

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Reiners, Chr, and M. Laßmann. "A DICOM based PACS for nuclear medicine." Nuklearmedizin 41, no. 01 (2002): 52–60. http://dx.doi.org/10.1055/s-0038-1623993.

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SummaryThe installation of a Radiology Information System (RIS) connected to a Hospital Information System (HIS) and a Picture Archiving and Communications System (PACS) seems mandatory for a nuclear medicine department in order to guarantee a high patient throughput. With these systems a fast transmission of reports, images to the in- and out-patients’ wards and private practitioners is realized. Therefore, since April 2000, at the department of nuclear medicine of the university of Würzburg a completely DICOM based PACS has been implemented in addition to the RIS.With this system a DICOM based workflow is realized throughout the department of nuclear medicine for reporting and archiving.The PACS is connected to six gamma-cameras, a PET scanner, a bone densitometry system and an ultrasound device. The volume of image data archived per month is 4 GByte. Patient demographics are provided to the modalities via DICOM-Worklist. With these PACS components a department specific archive purely based on DICOM can be realized. During the installation process problems occurred mainly because of the complex DICOM standard for nuclear medicine. Related to that is the problem that most of the software implementations still contain bugs or are not adapted to the needs of a nuclear medicine department (particularly for PET).A communication software for the distribution of nuclear medicine reports and images based on techniques used for the worldwide web is currently tested.

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Greyling, Abraham Gerhardus Wilhelmus, and Richard Denys Pitcher. "Who PACS a Punch? The Role of the Picture Archiving and Communication System/Radiology Information System (PACS/RIS) in Quantifying Experiential Learning in Radiology Residency." Journal of Digital Imaging 31, no. 6 (July 20, 2018): 792–98. http://dx.doi.org/10.1007/s10278-018-0106-7.

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Levine, Ross, Chen Lin, Qilin Peng, and Wensi Xie. "Communication within Banking Organizations and Small Business Lending." Review of Financial Studies 33, no. 12 (March 20, 2020): 5750–83. http://dx.doi.org/10.1093/rfs/hhaa036.

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Abstract We investigate how communication within banks affects small business lending. Using travel times between a bank’s headquarters and its branches to proxy for the costs of communicating soft information, we exploit shocks to these travel times—the introduction of new airline routes—to evaluate the impact of within-bank communication costs on small business loans. We find that reducing headquarters-branch travel time boosts small business lending in the branch’s county. Several extensions suggest that new airline routes facilitate in-person communications that boost small-firm lending.

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Gimenez, Pierre-Francois, Jonathan Roux, Eric Alata, Guillaume Auriol, Mohamed Kaaniche, and Vincent Nicomette. "RIDS." ACM Transactions on Cyber-Physical Systems 5, no. 3 (July 2021): 1. http://dx.doi.org/10.1145/3441458.

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The expansion of the Internet-of-Things (IoT) market is visible in homes, factories, public places, and smart cities. While the massive deployment of connected devices offers opportunities to improve quality of life and to develop new services, the impact of such devices on the security of the users in a context where the level of malicious threat continues to increase is a major concern. One of the challenges is the heterogeneity and constant evolution of wireless technologies and protocols used. To overcome this problem, we propose RIDS, a Radio Intrusion Detection System that is based on the monitoring and profiling of radio communications at the physical layer level using autoencoder neural networks. RIDS is independent of the wireless protocols and modulation technologies used. Besides, it is designed to provide a threefold diagnosis of the detected anomalies: temporal (start and end date of the detected anomaly), frequential (main frequency of the anomaly), and spatial (location of the origin of the anomaly). To demonstrate the relevance and the efficiency of our approach, we collected a large dataset of radio-communications recorded with three different probes deployed in an experimental room. Multiple real-world attacks involving a wide variety of communication technologies are also injected to assess the detection and diagnosis efficiency. The results demonstrate the efficiency of RIDS in detecting and diagnosing anomalies that occurred in the 400–500 Mhz and 800–900 Mhz frequency bands. It is noteworthy that compromised devices and attacks using these communication bands are generally not easily covered by traditional solutions.

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Oyebola, Oyediran O., Jackson Efitre, Laban Musinguzi, and Augustine E. Falaye. "Potential adaptation strategies for climate change impact among flood-prone fish farmers in climate hotspot Uganda." Environment, Development and Sustainability 23, no. 9 (February 9, 2021): 12761–90. http://dx.doi.org/10.1007/s10668-020-01183-1.

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AbstractClimate-induced floods are increasing in Africa. The need to evolve framework for adaptation to climate change impact (CCI) among flood-prone fish farmers necessitated this study. Based on availability, 60 farming active flood-experienced fish farmers were purposively selected from flood-prone (Gulu and Kibuku) regions in climate hotspot Uganda. These were assessed for CCI adaptation tendencies in their socioeconomics and farming operation/techniques (FOI) indices, CCI awareness, CCI adaptation strategies, and perceived required interventions (RIs) using structured questionnaire. Data were analyzed through descriptive and multivariate regression tools. Respondents were mostly male, adults, educated, Christian, married, medium-sized family, social group members, 1–5 years’ experience, medium-sized farms, and government trained. Income was 1.0–6.0 million Ugx/year. In FOI, semi-intensive culture system, use of rainwater plus groundwater, small-sized (< 0.5 ha) ponds, ponds possession of inlets and outlets, seasonal farming and mixed culture/farming dominated. Most respondents were aware of CCI, while erratic rainfall with floods and prolonged drought mostly impacted farming. AS-Adaptation Strategy were changed stocking time and livelihood diversification. Communication technology and social group’s membership enhanced adaptation, while inadequate awareness constrains adaptation. Respondents’ RI(s) were tree planting, irrigation and pond perimeter trenching. Gender, government training, farm size, water sources and presence of inlet and outlets in ponds (FOI) predicted adaptation (R = 0.802, R2 = 0.64, P < 0.05). Some socioeconomic, technical and awareness indices could assist CCI flexibility. However, the statistically significant predictors of adaptation, identified adaptive strategies, constraints to adaptation and required interventions could be integrated into a framework for effective CCI adaptation for sustainable fish farming in flood-prone scenarios.

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Doria, Miguel F., and Camila Arêas. "Educación y Comunicación sobre riesgos asociados a inundaciones." Aqua-LAC 4, no. 2 (September 30, 2012): 61–68. http://dx.doi.org/10.29104/phi-aqualac/2012-v4-2-06.

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A pesar de que los desastres por inundaciones sean resultado de factores naturales y humanos, su dimensión humana está todavía a menudo subestimada. Este artículo analiza el papel de medidas no estructurales dentro de los procesos de gestión de inundaciones como preparación de riesgos, respuestas de emergencia y rehabilitación. Se da un énfasis específico al papel de las capacidades humanas, en particular la educación, entrenamiento y comunicación de riesgo, en la mitigación del impacto de inundaciones. La educación de riesgos asociados a inundaciones (en los niveles primario, secundario y comunitario, así como los técnicos y superiores) y las estrategias de comunicación (actores, medios y contenido de mensajes) ofrecen una contribución valiosa para las dinámicas sociales de percepción, preparación, capacidad y vulnerabilidad de riesgos de inundación. Este artículo subraya la importancia de la participación activa de los actores envueltos antes, durante y después de los eventos de inundación, así como la integración de las percepciones del público en general en el análisis de daños por inundaciones y en la gestión de riesgo.

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Lisaj, Andrzej. "Maritime Communications in RIS System for Inland Navigation." TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation 9, no. 2 (2015): 287–91. http://dx.doi.org/10.12716/1001.09.02.18.

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Betz, David. "Communication Breakdown: Strategic Communications and Defeat in Afghanistan." Orbis 55, no. 4 (January 2011): 613–30. http://dx.doi.org/10.1016/j.orbis.2011.07.007.

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Lisaj, Andrzej. "Integrated Communications Platform for RIS Centres Supporting Inland Navigation." TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation 11, no. 1 (2017): 107–10. http://dx.doi.org/10.12716/1001.11.01.12.

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Yuan, Jing, Miaowen Wen, Qiang Li, Ertugrul Basar, George C. Alexandropoulos, and Gaojie Chen. "Receive Quadrature Reflecting Modulation for RIS-Empowered Wireless Communications." IEEE Transactions on Vehicular Technology 70, no. 5 (May 2021): 5121–25. http://dx.doi.org/10.1109/tvt.2021.3073161.

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He, Jiguang, Henk Wymeersch, and Markku Juntti. "Leveraging Location Information for RIS-Aided mmWave MIMO Communications." IEEE Wireless Communications Letters 10, no. 7 (July 2021): 1380–84. http://dx.doi.org/10.1109/lwc.2021.3067474.

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Bowler, Sue. "RAS appoints new communication officer." Astronomy & Geophysics 45, no. 5 (October 2004): 5.36. http://dx.doi.org/10.1093/astrogeo/45.5.5.36-c.

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Vasilyev, Gleb Sergeevich, Oleg R. Kuzichkin, and Dmitry I. Surzhik. "Performance analysis of MIMO communication system with NLOS UV channel." Photonics Letters of Poland 12, no. 4 (December 17, 2020): 91. http://dx.doi.org/10.4302/plp.v12i4.985.

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Performance analysis is carried out, of a multiple input, multiple output (MIMO) ultraviolet (UV) communication system with a non-line-of-sight (NLOS) UV channel. The achievable bit error coefficient is calculated using three spatial multiplexing methods for different bitrate values, azimuthal deviation between the directional diagrams of an optical transmitter and an optical receiver, and different noise levels. Full Text: PDF ReferencesZ. Xu, B. Sadler, "Ultraviolet communications: potential and state-of-the-art", IEEE Commun. Mag. 4667-73 (2009). CrossRef D. Han, Y. Liu, K. Zhang et al., "Theoretical and experimental research on diversity reception technology in NLOS UV communication system", Opt. Expr. 20(14), 15833 (2012). CrossRef Q. Guo, N. He, Z. He, "Research on the channel performances and transmission in UV-LED scatter communications", Study Opt. Comm. 3, 64 (2013). DirectLink G. Chen, L. Liao, Z. Li et al., "Experimental and simulated evaluation of long distance NLOS UV communication", Communication Systems, Networks and Digital Signal Processing (CSND-SP), 9th Int. Symp. on IEEE, 904-909 (2014). CrossRef M.A. El-Shimy, S. Hranilovic, "Spatial-Diversity Imaging Receivers for Non-Line-of-Sight Solar-Blind UV Communications", J. Lightwave Techn. 33(11), 2246 (2015). CrossRef G. Shaw, M. Nischan, M. Iyengar, S. Kaushik, M. Griffin, NLOS UV communication for distributed sensor systems, Proc. SPIE 412683, 96 (2000). CrossRef I.S. Konstantinov, G.S. Vasyliev, O.R. Kuzichkin, D.I. Surzhik, I.A. Kurilov, S.A. Lazarev, "AUV Link Mobile Ad-Hoc Network Examination", J. Eng. Adv. Techn. 8(5S) July 2019 CrossRef I.S. Konstantinov, G.S. Vasilyev, O.R. Kuzichkin, I.A. Kurilov, S.A. Lazarev, "Modeling and Analysis of the Characteristics of Ultraviolet Channels under Different Conditions of Radiation Propagation for the Organization of Wireless AD-HOC Network", J. Adv. Res. Dynam. Contr. Syst. 07, 1853 (2018) DirectLink I.S. Konstantinov, G.S. Vasyliev, O.R. Kuzichkin, D.I. Surzhik, I.A. Kurilov, S.A. Lazarev, "Development Of Uv Communication Channels Characteristics Modeling Algorithm In A Mobile Ad-Hoc Network", J. Adv. Res. Dynam. Contr. Syst. 11(08), 1920 (2019). CrossRef G. Chen, F. Abou-Galala, Z. Xu, B.M. Sadler, "Experimental evaluation of LED-based solar blind NLOS communication links", Opt. Expr. 16(19), 15059 (2008). CrossRef

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Journal articles on the topic 'Ris communication'

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