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Gotowa bibliografia na temat „Link Quality Metrics”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Link Quality Metrics"

Pinson, Margaret H., Philip J. Corriveau, Mikołaj Leszczuk i Michael Colligan. "Open Software Framework for Collaborative Development of No Reference Image and Video Quality Metrics". Electronic Imaging 2020, nr 11 (26.01.2020): 92–1. http://dx.doi.org/10.2352/issn.2470-1173.2020.11.hvei-092.

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This paper describes ongoing work within the video quality experts group (VQEG) to develop no-reference (NR) audiovisual video quality analysis (VQA) metrics. VQEG provides an open forum that encourages knowledge sharing and collaboration. The VQEG no-reference Metric (NORM) group’s goal is to develop open-source NR-VQA metrics that meet industry requirements for scope, accuracy, and capability. This paper presents industry specifications from discussions at VQEG face-to-face meetings among industry, academic, and government participants. This paper also announces an open software framework for collaborative development of NR image quality Analysis (IQA) and VQA metrics <ext-link ext-link-type="url" xlink:href="https://github.com/NTIA/NRMetricFramework"><https://github.com/NTIA/NRMetricFramework></ext-link>. This framework includes the support tools necessary to begin research and avoid common mistakes. VQEG’s goal is to produce a series of NR-VQA metrics with progressively improving scope and accuracy. This work draws upon and enables IQA metric research, as both use the human visual system to analyze the quality of audiovisual media on modern displays. Readers are invited to participate.

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Mao, Jing, Yan Zhao, Yu Xia, Zhuopeng Yang, Cheng Xu, Wei Liu i Daqing Huang. "Revisiting Link Quality Metrics and Models for Multichannel Low-Power Lossy Networks". Sensors 23, nr 3 (23.01.2023): 1303. http://dx.doi.org/10.3390/s23031303.

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Multichannel communication has great potential in environments with unknown interference patterns. However, existing link quality metrics and models are generally established and verified under a single-channel scenario, which does not consider the impacts of radio interference and channel change. Therefore, it is hard to directly judge whether these metrics and models are still valid under a multichannel scenario. This paper empirically analyzes the applicability of popular link quality metrics and models in multiple channels with different interference levels. Results show that the link quality estimation (LQE) capability of traditional metrics will be affected by the interference level of the channel, which makes the conclusions obtained under a single-channel scenario no longer valid. Meanwhile, traditional LQE models are basically not adaptive to radio interference and channel change. They are only valid for channels with similar interference under which they are modeled. If these models are directly used under a multichannel scenario, the link quality will be overestimated inevitably. In other words, traditional LQE metrics and models cannot be directly used in the multichannel scenario. It is necessary to deeply analyze the statistical characteristics of popular link quality metrics in multiple typical channels and design channel and interference adaptive metrics and models to support effective multichannel communication.

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Entezami, Fariborz, Martin Tunicliffe i Christos Politis. "Find the Weakest Link: Statistical Analysis on Wireless Sensor Network Link-Quality Metrics". IEEE Vehicular Technology Magazine 9, nr 3 (wrzesień 2014): 28–38. http://dx.doi.org/10.1109/mvt.2014.2333693.

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Javaid, N., A. Bibi, A. Javaid, Z. A. Khan, K. Latif i M. Ishfaq. "Investigating quality routing link metrics in Wireless Multi-hop Networks". annals of telecommunications - annales des télécommunications 69, nr 3-4 (10.12.2013): 209–17. http://dx.doi.org/10.1007/s12243-013-0409-0.

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Schwartz, Geoff. "Rhythm and Vowel Quality in Accents of English". Research in Language 8 (19.10.2010): 135–47. http://dx.doi.org/10.2478/v10015-010-0011-8.

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This paper will examine rhythmic differences among native and non-native accents of English, and report on a pilot experiment investigating a hypothesized interaction between rhythm and vowel quality. A new metric, % SteadyState, an acoustic measure that quantifies the purity of vowels, appears to capture rhythmic differences that have been reported among various native and non-native accents of English. In the tradition of other recently developed rhythm metrics, these findings suggest a link between rhythm and segmental phonology. Additionally, the perspective gained from this study may be beneficial to learners whose goal is native-like vowel quality, offering an understanding of the dynamic properties of English vowels.

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Aliyu, Ahmed, Abdul Hanan Abdullah, Ismail Fauzi Isnin, Raja Zahilah Raja Mohd Radzi, Arvind Kumar, Tasneem S. J. Darwish i Usman Mohammed Joda. "Road-Based Multi-Metric Forwarder Evaluation for Multipath Video Streaming in Urban Vehicular Communication". Electronics 9, nr 10 (13.10.2020): 1663. http://dx.doi.org/10.3390/electronics9101663.

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In video streaming over vehicular communication, optimal selection of a video packet forwarder is a daunting issue due to the dynamic nature of Vehicular Ad-hoc NETworks (VANETs)and the high data rates of video. In most of the existing studies, extensive considerations of the essential metrics have not been considered. In order to achieve quality video streaming in vehicular network, important metrics for link connectivity and bandwidth efficiency need to be employed to minimize video packet error and losses. In order to address the aforementioned issues, a Road-based Multi-metric Forwarder Evaluation scheme for Multipath Video Streaming (RMF-MVS) has been proposed. The RMF-MVS scheme is adapted to be a Dynamic Self-Weighting score (DSW) (RMF-MVS+DSW) for forwarder vehicle selection. The scheme is based on multipath transmission. The performance of the scheme is evaluated using Peak Signal to Noise Ratio (PSNR), Structural SIMilarity index (SSIM), Packet Loss Ratio (PLR) and End-to-End Delay (E2ED) metrics. The proposed scheme is compared against two baseline schemes including Multipath Solution with Link and Node Disjoint (MSLND) and Multimedia Multi-metric Map-aware Routing Protocol (3MRP) with DSW (3MRP+DSW). The comparative performance assessment results justify the benefit of the proposed scheme based on various video streaming related metrics.

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Huang, Zhirui, Lip Yee Por, Tan Fong Ang, Mohammad Hossein Anisi i Mohammed Sani Adam. "Improving the Accuracy Rate of Link Quality Estimation Using Fuzzy Logic in Mobile Wireless Sensor Network". Advances in Fuzzy Systems 2019 (17.04.2019): 1–13. http://dx.doi.org/10.1155/2019/3478027.

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Link quality estimation is essential for improving the performance of a routing protocol in a wireless sensor network. Many methods have been proposed to increase the performance of the link quality estimation; however, most of them are not able to evaluate link quality accurately. In this study, a method that uses fuzzy logic to combine both hardware-based and software-based metrics is proposed to improve the accuracy rate for evaluating a link quality. This proposed method consists of three types of modules, the Fuzzifier module, the Inference module, and the Defuzzifier module. The Fuzzifier module is used to determine the degree to which input link quality metrics belong to each fuzzy set through proposed membership functions. The Inference module obtains the rule outputs based on the proposed fuzzy rules and the given inputs acquired from the Fuzzifier module. The Defuzzifier module is used to aggregate the rule outputs inferred from the Inference module. The result from the Defuzzifier module is then used to evaluate the link quality. A simulation conducted to compare the accuracy rates of the proposed method and those found in related works showed that the proposed method had higher accuracy rates for evaluating a link quality.

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Evangeline, C. Suganthi, i S. Appu. "An Efficient Data Transmission in VANET Using Clustering Method". International Journal of Electronics and Telecommunications 63, nr 3 (28.08.2017): 309–13. http://dx.doi.org/10.1515/eletel-2017-0045.

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Abstract A special type of Mobile Ad-hoc Networks (MANETs) which has frequent changes of topology and higher mobility is known as Vehicular Ad-hoc Networks (VANETs). In order to divide the network into groups of mobile vehicles and improve routing, data gathering, clustering is applied in VANETs. A stable clustering scheme based on adaptive multiple metric combining both the features of static and dynamic clustering methods is proposed in this work. Based on a new multiple metric method, a cluster head is selected among the cluster members which is taken from the mobility metrics such as position and time to leave the road segment, relative speed and Quality of Service metrics which includes neighborhood degree, link quality of the RSU and bandwidth. A higher QoS and cluster stability are achieved through the adaptive multiple metric. The results are simulated using NS2 and shows that this technique provides more stable cluster structured with the other methods.

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Pfeifer, Marion, Michael J. W. Boyle, Stuart Dunning i Pieter I. Olivier. "Forest floor temperature and greenness link significantly to canopy attributes in South Africa’s fragmented coastal forests". PeerJ 7 (10.01.2019): e6190. http://dx.doi.org/10.7717/peerj.6190.

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Tropical landscapes are changing rapidly due to changes in land use and land management. Being able to predict and monitor land use change impacts on species for conservation or food security concerns requires the use of habitat quality metrics, that are consistent, can be mapped using above-ground sensor data and are relevant for species performance. Here, we focus on ground surface temperature (Thermalground) and ground vegetation greenness (NDVIdown) as potentially suitable metrics of habitat quality. Both have been linked to species demography and community structure in the literature. We test whether they can be measured consistently from the ground and whether they can be up-scaled indirectly using canopy structure maps (Leaf Area Index, LAI, and Fractional vegetation cover, FCover) developed from Landsat remote sensing data. We measured Thermalground and NDVIdown across habitats differing in tree cover (natural grassland to forest edges to forests and tree plantations) in the human-modified coastal forested landscapes of Kwa-Zulua Natal, South Africa. We show that both metrics decline significantly with increasing canopy closure and leaf area, implying a potential pathway for upscaling both metrics using canopy structure maps derived using earth observation. Specifically, our findings suggest that opening forest canopies by 20% or decreasing forest canopy LAI by one unit would result in increases of Thermalground by 1.2 °C across the range of observations studied. NDVIdown appears to decline by 0.1 in response to an increase in canopy LAI by 1 unit and declines nonlinearly with canopy closure. Accounting for micro-scale variation in temperature and resources is seen as essential to improve biodiversity impact predictions. Our study suggests that mapping ground surface temperature and ground vegetation greenness utilising remotely sensed canopy cover maps could provide a useful tool for mapping habitat quality metrics that matter to species. However, this approach will be constrained by the predictive capacity of models used to map field-derived forest canopy attributes. Furthermore, sampling efforts are needed to capture spatial and temporal variation in Thermalground within and across days and seasons to validate the transferability of our findings. Finally, whilst our approach shows that surface temperature and ground vegetation greenness might be suitable habitat quality metric used in biodiversity monitoring, the next step requires that we map demographic traits of species of different threat status onto maps of these metrics in landscapes differing in disturbance and management histories. The derived understanding could then be exploited for targeted landscape restoration that benefits biodiversity conservation at the landscape scale.

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Raj, A. Arockia Bazil, i S. Padmavathi. "Quality Metrics and Reliability Analysis of Laser Communication System". Defence Science Journal 66, nr 2 (23.03.2016): 175. http://dx.doi.org/10.14429/dsj.66.9707.

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<p class="Abstract">Beam wandering is the main cause for major power loss in laser communication. To analyse this prerequisite at our environment, a 155 Mbps data transmission experimental setup is built with necessary optoelectronic components for the link range of 0.5 km at an altitude of 15.25 m. A neuro-controller is developed inside the FPGA and used to stabilise the received beam at the centre of detector plane. The Q-factor and bit error rate variation profiles are calculated using the signal statistics obtained from the eye-diagram. The performance improvements on the laser communication system due to the incorporation of beam wandering mitigation control are investigated and discussed in terms of various communication quality assessment key parameters.</p><p class="Abstract"> </p>

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Rozprawy doktorskie na temat "Link Quality Metrics"

Wang, Enkuang D., Timothy J. Brothers i Richard T. Causey. "LINK QUALITY METRICS FOR ADAPTIVE CODING AND MODULATION WITH SOQPSK AND OFDM". International Foundation for Telemetering, 2017. http://hdl.handle.net/10150/627014.

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In previous work, we presented a link quality metric for adaptive modulation and coding of two standard telemetry waveforms, orthogonal frequency-division multiplexing (OFDM) and shaped-offset quadrature phase shift keying (SOQPSK). That metric unified error vector magnitude (EVM) and Godard dispersion, for OFDM and SOQPSK, respectively, in the contexts of additive white Gaussian noise (AWGN) channels. In this paper, we present an alternative metric based on low density parity check (LDPC) decoding iterations. We show this new metric to be an equally effective substitute for AWGN channels but also to be applicable to a wider variety of channels, including those with multipath and interference. Furthermore, we show the metric to be robust within sub-optimal, lower complexity receiver architectures.

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Javaid, Nadeem. "Analysis and design of quality link metrics for routing protocols in Wireless Networks". Phd thesis, Université Paris-Est, 2010. http://tel.archives-ouvertes.fr/tel-00587765.

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This dissertation endeavors to contribute enhancements in goodputsof the IEEE 802.11-based Wireless Multi-hop Networks (WMhNs).By performing exhaustive simulations, for the deep analysis and detailed assessment of both reactive (AODV, DSR, DYMO) and proactive (DSDV, FSR, OLSR) protocols for varying mobilities, speeds, network loads and scalabilities, it is observed that a routing link metric is a significant component of a routing protocol. In addition to finding all available paths, the fastest end-to-end route is selected by a link metric for the routing protocol. This study aims the quality routing. In the class of quality link metrics, Expected Transmission Count (ETX) is extensively used. Thus, the most recently proposed ETX-based metrics have been analyzed. Though, newly developed metrics over perform ETX but still they can be improved. By profound analysis and particularized comparison of routing protocols depending upon their classes (reactive and proactive) and ETX-based metrics, we come to realize that users always demand proficient networks. In fact, WMhNs are facing several troubles which they expect to be resolved by the routing protocol operating them. Consequently, the protocol depends upon the link metric for providing quality paths. So, we identify and analyze the requirements to design a new routing link metric for WMhNs. Because, considering these requirements, when a link metric is proposed, then : firstly, both the design and implementation of the link metric with a routing protocol become easy. Secondly, the underlying network issues can easily be tackled. Thirdly, an appreciable performance of the network is guaranteed. Keeping in view the issues of WMhNs, increasing demands of users and capabilities of routing protocols, we propose and implement a new quality link metric, Interference and Bandwidth Adjusted ETX (IBETX). As, MAC layer affects the link performance and consequently the route quality, the metric therefore, tackles the issue by achieving twofold MAC-awareness. Firstly, interference is calculated using cross-layered approach by sending probes to MAC layer. Secondly, the nominal bit rate information is provided to all nodes in the same contention domain by considering the bandwidth sharing mechanism of 802.11. Like ETX, our metric also calculates link delivery ratios that directly affect throughput and selects those routes that bypass dense regions in the network. Simulation results by NS-2 show that IBETX gives 19% higher through put than ETX and 10% higher than Expected Throughput (ETP). Our metric also succeeds to reduce average end-to-end delay up to 16% less than Expected Link Performance (ELP) and 24% less than ETX

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Mehmood, Raja Majid, i Gulraiz Iqbal. "Visualization of Statistical Contents". Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-8583.

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Our project presents the research on visualization of statistical contents. Here wewill introduce the concepts of visualization, software quality metrics andproposed visualization technique (line chart). Our aim to study the existingvisualization techniques for visualization of software metrics and then proposedthe visualization approach that is more time efficient and easy to perceive byviewer.In this project, we focus on the practical aspects of visualization of multipleprojects with respect to the versions and metrics. This project also gives animplementation of proposed visualization techniques of software metrics. In thisresearch based work, we have to compare practically the proposed visualizationapproaches. We will discuss the software development life cycle of our proposedvisualization system, and we will also describe the complete softwareimplementation of implemented software.

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Perera, Dinesh Sirimal. "Design metrics analysis of the Harris ROCC project". Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/935930.

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The Design Metrics Research Team at Ball State University has developed a quality design metric D(G), which consists of an internal design metric Di, and an external design metric De. This thesis discusses applying design metrics to the ROCC-Radar On-line Command Control project received from Harris Corporation. Thus, the main objective of this thesis is to analyze the behavior of D(G), and the primitive components of this metric.Error and change history reports are vital inputs to the validation of design metrics' performance. Since correct identification of types of changes/errors is critical for our evaluation, several different types of analyses were performed in an attempt to qualify the metric performance in each case.This thesis covers the analysis of 666 FORTRAN modules with approximately 142,296 lines of code.
Department of Computer Science

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MEHMOOD, RAJA MAJID, i GULRAIZ IQBAL. "Visualization of Statistical Contents". Thesis, Växjö University, School of Mathematics and Systems Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-5556.

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Coelho, Jose Flavio Guerra Machado, i f. coelho@bigpond com. "SUSTAINABILITY PERFORMANCE EVALUATION MANAGEMENT SYSTEMS MODEL FOR INDIVIDUAL ORGANIZATIONS AND SUPPLY CHAINS". Central Queensland University, 2006. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20060720.094327.

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The title of the research is Sustainability Performance Evaluation Management Systems Model for Individual Organizations and Supply Chains. This research has achieved its aim to develop and demonstrate the practical implementation of a simple and objective sustainability performance evaluation management system model for individual organizations and supply chains. It has resulted in the recognition that a new concept Network of Interested Partners underpins the achievement of sustainability. The term acknowledges the interdependence and reflects the essential cooperation that must be achieved between business organisations, their commercially related entities and the local community if progress towards sustainability is to be achieved. It therefore encompasses and extends the concept of a supply chain as currently used. Sustainable Development is defined by the World Commission on Environment and Development as development, which meets the needs of the present without compromising the ability of future societies to meet their own needs. Organizations, as part of human activities, also have to be sustainable. The sustainability of organizations is directly linked to the continual improvement of business performance. Many organizations have found a way to improve performance through the establishment of management systems. International Organization for Standardization (ISO) standards are recognized worldwide as reliable and efficient tools for the implementation of management systems. However, they do not always result in the desired improvement in outcomes. Therefore, if the required improvement of business performance is to be achieved, improved methodologies for development and implementation of performance evaluation (PE) processes are necessary. These methodologies must take into consideration sustainability principles. They also have to be applicable to individual entities and supply chains, with or without management systems in place. Supply chains are important because it is being increasingly recognized that overall supply chain performance is a means of adding value and competitive advantage to all businesses. In the first part of the research a performance evaluation model or PE (version 1 model) was developed. This was used as criteria to compare and evaluate existing performance evaluation processes and outcomes of individual organisations and their respective supply chain within the Gladstone region, Australia. Questionnaires have also been used to identify and evaluate the needs of the interested parties in relation to the organizations and supply chains business performance and processes of performance evaluation. All the information provided in the first part of the research was used by the researcher to develop the Sustainability Performance Evaluation Management Systems model or SPEMS (version 2 model). This incorporates the concepts of Network of Interested Parties/Partners. In particular, one of the outcomes is recognition that organizations need to establish partnerships if effective supply chain performance improvement is to be achieved. Therefore the establishment of partnerships has become a key requirement for the implementation of SPEMS. The establishment of partnership among participants of a supply chain of Gladstone and implementation of the eight first steps of the SPEMS (version 2 model) in this supply chain was commenced successfully through workshops. The supply chain was formed by commercial organizations, government entities and interested parties from the community. SPEMS requires that partners all have the same level of ownership and authority in the decisions of the supply chain. Some new terms and their definitions have been created within the research to support the new SPEMS model. They include: Network of Interested Partners, sustainability for organizations, sustainability KPI and sustainability friendly organizations. All of the above are encompassed within the final SPEMS (version 3 model).

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Książki na temat "Link Quality Metrics"

Winters, Bradford D., i Peter J. Pronovost. Patient safety in the ICU. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0016.

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While patient safety and quality have become a major focus of health care providers, policy makers, and customers over the last decade and a half, progress has been limited and wide quality gaps, where patient do not receive the care they should, remain. While technical improvements have gone a long way in these efforts, adaptive improvements in the culture of safety need to be more vigorously addressed. Likewise, quality metrics and a scientific approach to patient safety is necessary to ensure that interventions actually work. The Comprehensive Unit Safety Program (CUSP) strategy and its embedded Learning from Defects (LFD) process are central to creating a sustainable improvement in the culture of patient safety and quality, and in real outcomes and process improvements. CUSP is a bottom-up approach that relies on the wisdom and efforts of front-line providers who best know the safety issues in their immediate environment. The LFD process seeks to translate evidence into practice (TRiP model) building interventions and tools to improve safety and close the quality gap. The development of these interventions and tools are guided by the principles of safe design and the application of the four E’s (engagement, education, execution, and evaluation) can be successfully implemented into the health care environment with substantial improvements in safety and quality.

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Części książek na temat "Link Quality Metrics"

Chinazzo, André, Christian De Schryver, Katharina Zweig i Norbert Wehn. "Increasing the Sampling Efficiency for the Link Assessment Problem". W Lecture Notes in Computer Science, 39–56. Cham: Springer Nature Switzerland, 2022. http://dx.doi.org/10.1007/978-3-031-21534-6_3.

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AbstractComplex graphs are at the heart of today’s big data challenges like recommendation systems, customer behavior modeling, or incident detection systems. One reoccurring task in these fields is the extraction of network motifs, which are subgraphs that are reoccurring and statistically significant. To assess the statistical significance of their occurrence, the observed values in the real network need to be compared to their expected value in a random graph model.In this chapter, we focus on the so-called Link Assessment (LA) problem, in particular for bipartite networks. Lacking closed-form solutions, we require stochastic Monte Carlo approaches that raise the challenge of finding appropriate metrics for quantifying the quality of results (QoR) together with suitable heuristics that stop the computation process if no further increase in quality is expected. We provide investigation results for three quality metrics and show that observing the right metrics reveals so-called phase transitions that can be used as a reliable basis for such heuristics. Finally, we propose a heuristic that has been evaluated with real-word datasets, providing a speedup of $$15.4\times $$ 15.4 × over previous approaches.

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Gao, Guangchao, Heng Zhang i Li Li. "Performance Evaluation of WSNs-Based Link Quality Estimation Metrics for Industrial Environments". W Advanced Technologies in Ad Hoc and Sensor Networks, 69–79. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54174-2_7.

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Cipolla Ficarra, Francisco V., Ernesto Vivas i Joaquim Romo. "Credibility On-Line: Quality Metrics for Evaluation". W Online Communities and Social Computing, 172–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02774-1_19.

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Vijayabaskar i T. Kumanan. "Link Quality and Energy-Aware Metric-Based Routing Strategy in WSNS". W Intelligent Computing in Engineering, 533–39. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2780-7_58.

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Bindel, Sebastien, Serge Chaumette i Benoit Hilt. "A Novel Predictive Link Quality Metric for Mobile Ad-Hoc Networks in Urban Contexts". W Ad Hoc Networks, 134–45. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25067-0_11.

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Sreedhar, G. "Quality Assurance of Website Structure". W Designing, Engineering, and Analyzing Reliable and Efficient Software, 140–48. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2958-5.ch008.

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Today, the web is not only an information resource, but also it is becoming an automated tool in various applications. Due to the increasing popularity of WWW, one can be very cautious in designing the website. Poor and careless web design leads to hardship to public utility and does not serve the purpose. If the website is not designed properly, the user may face many difficulties in using the website. In last few years a set of website metrics were defined and specified based on the data collection point of view. Among hundred and fifty automated web metrics catalogued up to now, metrics for link and page faults, metrics for navigation, metrics for information, metrics for media, metrics for size and performance, and metrics for accessibility are important categories for evaluation of quality of web site. The website structure and navigation depicts the structure of the website. The navigation of website is dependent on structure of the web site. The present chapter is an attempt to develop a comprehensive quality assurance mechanism towards quality web design process. In this chapter, various measures and metrics for the quality of website structure are investigated as a part of quality assurance process.

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Denecke, Kerstin, Elizabeth M. Borycki i Andre W. Kushniruk. "What Can We Learn from Quality Requirements in ISO/TS 82304-2 for Evaluating Conversational Agents in Healthcare?" W Studies in Health Technology and Informatics. IOS Press, 2022. http://dx.doi.org/10.3233/shti220992.

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Evaluating conversational agents (CA) that are supposed to be applied in healthcare and ensuring their quality is essential to avoid patient harm. However, most researchers only study usability and use the CA in clinical trials before conducting such careful evaluation. In previous work, consensus on metrics for evaluating healthcare CA have been found. However, the metrics are still too generic to form an evaluation framework. In this work, we try to link the ISO technical specification ISO/TS 82304-2 Quality Requirements for Health and Wellness Apps to the set of metrics to come a step closer towards an evaluation framework. We identify three links between ISO requirements and the set of metrics, namely accessibility, usability, and security. Although the technical specification rather lists aspects to be considered during development instead of concrete metrics for studying the quality, we can link to some aspects that are also of interest for health CA evaluation. For example, measuring the readability for ensuring accessibility or implementing the Web Content Accessibility Guidelines are two aspects of relevance for health CA.

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Curado, Marília. "Quality of Service Routing". W Encyclopedia of Internet Technologies and Applications, 449–55. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59140-993-9.ch063.

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Traditionally, Internet routing is achieved through shortest path protocols that base their decision on the number of hops or administrative metrics. The path computation algorithms belong either to the distance vector or link state families. Distance vector protocols have been widely used on the Internet since the ARPANET and remain in use today. The protocols of the Distance Vector family are used by routers to exchange routing information with their neighbours and to select the shortest paths to all destinations within the network using the Bellman-Ford algorithm, such as in the routing information protocol (RIP) (Malkin, 1998).

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Shankaranarayanan, G., i Adir Even. "Measuring Data Quality in Context". W Handbook of Research on Innovations in Database Technologies and Applications, 385–95. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-242-8.ch042.

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Maintaining data at a high quality is critical to organizational success. Firms, aware of the consequences of poor data quality, have adopted methodologies and policies for measuring, monitoring, and improving it (Redman, 1996; Eckerson, 2002). Today’s quality measurements are typically driven by physical characteristics of the data (e.g., item counts, time tags, or failure rates) and assume an objective quality standard, disregarding the context in which the data is used. The alternative is to derive quality metrics from data content and evaluate them within specific usage contexts. The former approach is termed as structure-based (or structural), and the latter, content-based (Ballou and Pazer, 2003). In this chapter we propose a novel framework to assess data quality within specific usage contexts and link it to data utility (or utility of data) - a measure of the value contribution associated with data within specific usage contexts. Our utility-driven framework addresses the limitations of structural measurements and offers alternative measurements for evaluating completeness, validity, accuracy, and currency, as well as a single measure that aggregates these data quality dimensions.

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Maheswari, G. Uma. "Fuzzy QoS Based OLSR Network". W Advancements and Innovations in Wireless Communications and Network Technologies, 50–55. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2154-1.ch004.

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Quality-of-Service (QoS) routing protocol is developed for mobile Ad Hoc Networks. MANET is a self configuring network of mobile devices connected by wireless links. Each device in the MANET is free to move independently in any direction; therefore, it changes links to other devices frequently. The proposed QoS-based routing in the Optimized Link State Routing (OLSR) protocol relates bandwidth and delay using a fuzzy logic algorithm. The path computations are examined and the reason behind the selection of bandwidth and delay metrics is discussed. The performance of the protocol is investigated by simulation. The results in FQOLSR indicate an improvement in mobile wireless networks compared with the existing QOLSR system.

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Streszczenia konferencji na temat "Link Quality Metrics"

Liu, Wei, Yu Xia, Jinwei Xu, Shunren Hu i Rong Luo. "Revisiting Link Quality Metrics for Wireless Sensor Networks". W 2019 IEEE 5th International Conference on Computer and Communications (ICCC). IEEE, 2019. http://dx.doi.org/10.1109/iccc47050.2019.9064098.

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Uludag, Suleyman, Ziyneti E. Uludag, Anthony Howell, Fred Baker i King-Shan Lui. "Stochastically Guaranteed Routing for Additive Link Metrics with Unknown Distributions". W 2008 16th International Workshop on Quality of Service. IEEE, 2008. http://dx.doi.org/10.1109/iwqos.2008.28.

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Bildea, Ana, Olivier Alphand, Franck Rousseau i Andrzej Duda. "Link quality metrics in large scale indoor wireless sensor networks". W 2013 IEEE 24th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). IEEE, 2013. http://dx.doi.org/10.1109/pimrc.2013.6666451.

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Sandanalakshmi, R., K. Manivannan i T. G. Palanivelu. "An Analysis of Link Adaptation Algorithm based On Link Quality Metrics for IEEE 802.16 Systems". W 2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems (ICIIS). IEEE, 2008. http://dx.doi.org/10.1109/iciinfs.2008.4798418.

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Xu, Jinwei, Yu Xia, Jian Xie, Wei Liu, Rong Luo, Shunren Hu i Daqing Huang. "Faster or Slower: Convergence of Link Quality Metrics in Wireless Sensor Networks". W 2020 IEEE 6th International Conference on Computer and Communications (ICCC). IEEE, 2020. http://dx.doi.org/10.1109/iccc51575.2020.9345076.

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Chebrolu, K., i A. Mishra. "Loss behavior analysis and its application in design of link quality metrics". W 2011 Third International Conference on Communication Systems and Networks (COMSNETS 2011). IEEE, 2011. http://dx.doi.org/10.1109/comsnets.2011.5716415.

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Servin, Jesus G., i Angel G. Andrade. "Measurements and characterization of link quality metrics in energy constrained IEEE 802.15.4". W 2010 Wireless Telecommunications Symposium (WTS 2010). IEEE, 2010. http://dx.doi.org/10.1109/wts.2010.5479660.

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Zarzoor, Ahmed R. "Enhancing dynamic source routing (DSR) protocol performance based on link quality metrics". W 2021 International Seminar on Application for Technology of Information and Communication (iSemantic). IEEE, 2021. http://dx.doi.org/10.1109/isemantic52711.2021.9573233.

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Liu, Tao, Ankur Kamthe, Lun Jiang i Alberto Cerpa. "Performance Evaluation of Link Quality Estimation Metrics for Static Multihop Wireless Sensor Networks". W 2009 6th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks. IEEE, 2009. http://dx.doi.org/10.1109/sahcn.2009.5168959.

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Krogmann, Martin, Tian Tian, Guido Stromberg, Mike Heidrich i Mario Huemer. "Impact of link quality estimation errors on routing metrics for wireless sensor networks". W 2009 International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP). IEEE, 2009. http://dx.doi.org/10.1109/issnip.2009.5416804.

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Raporty organizacyjne na temat "Link Quality Metrics"

Feeney, Patricia, Matthias Liffers, Estelle Cheng i Paul Vierkant. Better Together: Complete Metadata as Robust Infrastructure. Crossref, listopad 2022. http://dx.doi.org/10.13003/m3237yt.

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According to the survey we conducted prior to this webinar series dedicated to the APAC community, metadata quality was one of the most voted topics to be covered in the webinars, which is understandable - out of FAIRsFAIR’s 15 assessment metrics for the FAIRness of research objects, 12 are about metadata. Rich and persistent metadata that incorporate identifiers and encode generic and domain-specific information, accessibility and licensing, and links between objects using standardized vocabulary and communication protocols is the cornerstone of a versatile, equitable, and trustworthy scholarly infrastructure ecosystem. In this webinar, we want to focus on the various aspects of enriching the metadata of research outputs. What is considered rich or complete, what does it mean to the metadata capture and curation workflows, how is this process supported, what services are underpinned by which part of the metadata, etc? In this webinar, we’ll hear from Matthias Liffers from ARDC and representatives from Crossref, DataCite, and ORCID, to share their perspectives and provide guidance toward a world with richer metadata. This webinar takes place on Nov 28, 2022, 06:00 AM Universal Time UTC/ 14:00 Beijing. This webinar will last 90 minutes including time for Q&A. The slides and recording will be shared afterward with all who register for the event.

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Bingham, Sonia, i Craig Young. Sentinel wetlands in Cuyahoga Valley National Park: I. Ecological characterization and management insights, 2008–2018. Redaktor Tani Hubbard. National Park Service, luty 2023. http://dx.doi.org/10.36967/2296885.

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Sentinel wetlands at Cuyahoga Valley National Park (NP) comprise a set of twenty important management areas and reference sites. These wetlands are monitored more closely than other wetlands in the wetlands monitoring program and are the focus of the volunteer monitoring program for water levels. We used the Ohio Rapid Assessment Method (ORAM) to evaluate habitat in the sentinel wetlands. A total of 37 long-term sample plots have been established within these wetlands to monitor biological condition over time using vegetation as an indicator. Vegetation is intensively surveyed using the Vegetation Index of Biotic Integrity (VIBI), where all plant species within the plot are identiﬁed to the lowest taxonomic level possible (genus or species). Sample plots were surveyed twice from 2008 to 2018 and the vegetation data were evaluated using ﬁve metrics: VIBI, Floristic Quality Assessment Index (FQAI), percent sensitive plant species, percent invasive graminoids, and species richness. These metrics are discussed for each location. This report also highlights relevant land use histories, common native plant species, and invasive species of concern at each wetland. This is the ﬁrst report in a two-part series, designed to summarize the results from intensive vegetation surveys completed at sentinel wetlands in 2008–2018. Boston Mills, Virginia Kendall Lake, Stumpy Basin, Columbia, and Beaver Marsh are all in excellent condition at one or more plots. They have unique habitats with some specialized plant species. Fawn Pond is in good condition at most plots and scores very high in comparison to other wetlands within the riverine mainstem hydrogeomorphic class. Metric scores across mitigation wetlands were low. Two of the three wetlands (Brookside and Rockside) are not meeting the benchmarks originally established by the United States Army Corps of Engineers and Ohio Environmental Protection Agency. Krejci is still a young mitigation site and success will be determined over time. Park-supported invasive species control eﬀorts will be crucial for long-term success of these sites and future mitigation/restoration projects. The wetlands monitored because of proposed ecological restoration projects (Pleasant Valley, Stanford, and Fawn Pond) have extensive invasive plant communities. These restoration sites should be re-evaluated for their feasibility and potential success and given an order of prioritization relative to the newer list of restoration sites. Cuyahoga Valley NP has added many new areas to their list of potential wetland restoration sites after these areas were selected, and there may be better opportunities available based on restoration objectives. Restoration goals should be based on the park's desired future conditions, and mitigation goals of outside partners may not always be in line with those. The multiple VIBI plots dispersed throughout the large wetlands at Cuyahoga Valley NP detected and illuminated spatial patterns in condition. Many individual wetlands had a wide range of VIBI scores within their boundaries, sometimes reﬂecting localized disturbances, past modiﬁcations, and management actions. Most often, these large ﬂuctuations in condition were linked to local invasive plant infestations. These infestations appear to be the most obvious and widespread threat to wetland ecosystems within the park, but also the most controllable threat. Some sensitive species are still present in some of the lowest scoring plots, which indicates that invasive plant species control eﬀorts may pay oﬀ immediately with a resurgence of native communities. Invasive plant control at rare habitat sites would have large payoﬀs over time by protecting some of the park's most unique wetlands. Reference wetlands would also be good demonstration sites for park managers to try to maintain exemplary conditions through active management. Through this work, park managers can evaluate the feasibility, eﬀectiveness, and scalability of management practices required to maintain wetland condition.

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Pstuty, Norbert, Mark Duffy, Dennis Skidds, Tanya Silveira, Andrea Habeck, Katherine Ames i Glenn Liu. Northeast Coastal and Barrier Network Geomorphological Monitoring Protocol: Part I—Ocean Shoreline Position, Version 2. National Park Service, czerwiec 2022. http://dx.doi.org/10.36967/2293713.

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Following a review of Vital Signs – indicators of ecosystem health – in the coastal parks of the Northeast Coastal and Barrier Network (NCBN), knowledge of shoreline change was ranked as the top variable for monitoring. Shoreline change is a basic element in the management of any coastal system because it contributes to the understanding of the functioning of the natural resources and to the administration of the cultural resources within the parks. Collection of information on the vectors of change relies on the establishment of a rigorous system of protocols to monitor elements of the coastal geomorphology that are guided by three basic principles: 1) all of the elements in the protocols are to be based on scientific principles; 2) the products of the monitoring must relate to issues of importance to park management; and 3) the application of the protocols must be capable of implementation at the local level within the NCBN. Changes in ocean shoreline position are recognized as interacting with many other elements of the Ocean Beach-Dune Ecosystem and are thus both driving and responding to the variety of natural and cultural factors active at the coast at a variety of temporal and spatial scales. The direction and magnitude of shoreline change can be monitored through the application of a protocol that tracks the spatial position of the neap-tide, high tide swash line under well-defined conditions of temporal sampling. Spring and fall surveys conducted in accordance with standard operating procedures will generate consistent and comparable shoreline position data sets that can be incorporated within a data matrix and subsequently analyzed for temporal and spatial variations. The Ocean Shoreline Position Monitoring Protocol will be applied to six parks in the NCBN: Assateague Island National Seashore, Cape Cod National Seashore, Fire Island National Seashore, Gateway National Recreation Area, George Washington Birthplace National Monument, and Sagamore Hill National Historic Site. Monitoring will be accomplished with a Global Positioning System (GPS )/ Global Navigation Satellite System (GNSS) unit capable of sub-meter horizontal accuracy that is usually mounted on an off-road vehicle and driven along the swash line. Under the guidance of a set of Standard Operating Procedures (SOPs) (Psuty et al., 2022), the monitoring will generate comparable data sets. The protocol will produce shoreline change metrics following the methodology of the Digital Shoreline Analysis System developed by the United States Geological Survey. Annual Data Summaries and Trend Reports will present and analyze the collected data sets. All collected data will undergo rigorous quality-assurance and quality-control procedures and will be archived at the offices of the NCBN. All monitoring products will be made available via the National Park Service’s Integrated Resource Management Applications Portal.

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