Model: sarwin/rp-embed
Author: sarwin
Pipeline: sentence-similarity
Library: sentence-transformers
Tags: sentence-transformers, safetensors, bert, sentence-similarity, feature-extraction, generated_from_trainer, dataset_size:730454, loss:MultipleNegativesRankingLoss, arxiv:1908.10084, arxiv:1705.00652, base_model:nreimers/MiniLM-L6-H384-uncased, base_model:finetune:nreimers/MiniLM-L6-H384-uncased, text-embeddings-inference, endpoints_compatible, region:us
Base models (finetune): id: nreimers/MiniLM-L6-H384-uncased
Card metadata: base_model: nreimers/MiniLM-L6-H384-uncased
library_name: sentence-transformers
pipeline_tag: sentence-similarity
tags: sentence-transformers, sentence-similarity, feature-extraction, generated_from_trainer, dataset_size:730454, loss:MultipleNegativesRankingLoss
widget: source_sentence: Markov chains and performance comparison of switched diversity systems
sentences: An algorithm for speaker's lip segmentation and features extraction is presented. A color video sequence of speaker's face is acquired, under natural lighting conditions and without any particular make-up. First, a logarithmic color transform is performed from the RGB to HI (hue, intensity) color space. Second, a statistical approach using Markov random field modeling determines the red hue prevailing region and motion in a spatiotemporal neighborhood. Third, the final label field is used to extract ROI (region of interest) and geometrical features., There are about 90 million high performance mobile phones used in Japan. We are now planning to develop new applications of mobile phone to support children and elder and disabled people who are out of scope of major mobile phone application based on their requirements. We have a responsibility to extend the application filed of mobile phone as a leading country of ubiquitous life. This paper discusses possibilities to realize mobile ad hoc networks using Bluetooth functions equipped on a mobile phone. Hierarchical mobile ad hoc networks using Bluetooth in a mobile phone are firstly developed as a test platform. The test platform proves the possibility of developing mobile ad hoc network by mobile phone built-in Bluetooth functions. We demonstrate their capabilities by showing results of implementing game applications on the test platform. The paper also describes some example applications using mobile ad hoc network technologies, which include a location tracking system for children on the way to a school and an alarm system for hearing impaired people, Switch-and-stay combining (SSC) diversity systems have the advantage of offering one of the least complex solutions to mitigating the effect of fading. In this paper, we present a Markov chain-based analytical framework for the performance analysis of various switching strategies used in conjunction with SSC systems. The resulting expressions are quite general, and are applicable to dual-branch diversity systems operating over a variety of correlated and/or unbalanced fading channels. The mathematical formalism is illustrated by some selected numerical examples, along with their discussion and interpretation. As a result, this paper presents a thorough comparison and highlights the main differences and tradeoffs between the various SSC switching strategies., source_sentence: Effect of age on the failure properties of human meniscus: High-speed strain mapping of tissue tears.
sentences: The knee meniscus is a soft fibrous tissue with a high incidence of injury in older populations. The objective of this study was to determine the effect of age on the failure behavior of human knee meniscus when applying uniaxial tensile loads parallel or perpendicular to the primary circumferential fiber orientation. Two age groups were tested: under 40 and over 65 years old. We paired high-speed video with digital image correlation to quantify for the first time the planar strains occurring in the tear region at precise time points, including at ultimate tensile stress, when the tissue begins losing load-bearing capacity. On average, older meniscus specimens loaded parallel to the fiber axis had approximately one-third less ultimate tensile strain and absorbed 60% less energy to failure within the tear region than younger specimens (p < 0.05). Older specimens also had significantly reduced strength and material toughness when loaded perpendicular to the fibers (p < 0.05). These age-related changes indicate a loss of collagen fiber extensibility and weakening of the non-fibrous matrix with age. In addition, we found that when loaded perpendicular to the circumferential fibers, tears propagated near the planes of maximum tensile stress and strain. Whereas when loaded parallel to the circumferential fibers, tears propagated oblique to the loading axis, closer to the planes of maximum shear stress and strain. Our experimental results can assist the selection of valid failure criteria for meniscus, and provide insight into the effect of age on the failure mechanisms of soft fibrous tissue., Objectives: We aimed to identify key demographic risk factors for hospital attendance with COVID-19 infection. Design: Community survey Setting: The COVID Symptom Tracker mobile application co-developed by physicians and scientists at Kings College London, Massachusetts General Hospital, Boston and Zoe Global Limited was launched in the UK and US on 24th and 29th March 2020 respectively. It captured self-reported information related to COVID-19 symptoms and testing. Participants: 2,618,948 users of the COVID Symptom Tracker App. UK (95.7%) and US (4.3%) population. Data cut-off for this analysis was 21st April 2020. Main outcome measures: Visit to hospital and for those who attended hospital, the need for respiratory support in three subgroups (i) self-reported COVID-19 infection with classical symptoms (SR-COVID-19), (ii) self-reported positive COVID-19 test results (T-COVID-19), and (iii) imputed/predicted COVID-19 infection based on symptomatology (I-COVID-19). Multivariate logistic regressions for each outcome and each subgroup were adjusted for age and gender, with sensitivity analyses adjusted for comorbidities. Classical symptoms were defined as high fever and persistent cough for several days. Results: Older age and all comorbidities tested were found to be associated with increased odds of requiring hospital care for COVID-19. Obesity (BMI >30) predicted hospital care in all models, with odds ratios (OR) varying from 1.20 [1.11; 1.31] to 1.40 [1.23; 1.60] across population groups. Pre-existing lung disease and diabetes were consistently found to be associated with hospital visit with a maximum OR of 1.79 [1.64,1.95] and 1.72 [1.27; 2.31]) respectively. Findings were similar when assessing the need for respiratory support, for which age and male gender played an additional role. Conclusions: Being older, obese, diabetic or suffering from pre-existing lung, heart or renal disease placed participants at increased risk of visiting hospital with COVID-19. It is of utmost importance for governments and the scientific and medical communities to work together to find evidence-based means of protecting those deemed most vulnerable from COVID-19. Trial registration: The App Ethics have been approved by KCL ethics Committee REMAS ID 18210, review reference LRS-19/20-18210, Social networking sites (SNS) have growing popularity and several sites compete with each other. This study examines three models to determine how competition between Facebook and other social networking sites may affect continuance intention on Facebook. The first model examines the relationship between having an account on four different SNSs and its impact on Facebook. Twitter users have lower intentions to continue using Facebook, Instagram users have higher intentions. The second model examines attitudes toward specific alternatives and found that users who felt alternatives were attractive have lower intentions to continue using Facebook. The third model examined general attitudes about alternative attractiveness and attitudes toward switching, this model explained a moderate to substantial amount of the variance in continuance intention. This study makes important contributions to both research and practice., source_sentence: Bayesian duration modeling and learning for speech recognition
sentences: Measuring solar irradiance allows for direct maximization of the efficiency in photovoltaic power plants. However, devices for solar irradiance sensing, such as pyranometers and pyrheliometers, are expensive and difficult to calibrate and thus seldom utilized in photovoltaic power plants. Indirect methods are instead implemented in order to maximize efficiency. This paper proposes a novel approach for solar irradiance measurement based on neural networks, which may, in turn, be used to maximize efficiency directly. An initial estimate suggests the cost of the sensor proposed herein may be price competitive with other inexpensive solutions available in the market, making the device a good candidate for large deployment in photovoltaic power plants. The proposed sensor is implemented through a photovoltaic cell, a temperature sensor, and a low-cost microcontroller. The use of a microcontroller allows for easy calibration, updates, and enhancement by simply adding code libraries. Furthermore, it can be interfaced via standard communication means with other control devices, integrated into control schemes, and remote-controlled through its embedded web server. The proposed approach is validated through experimental prototyping and compared against a commercial device., Form is a framework used to construct tools for analyzing the runtime behavior of standalone and distributed software systems. The architecture of Form is based on the event broadcast and pipe and filter styles. In the implementation of this architecture, execution profiles may be generated from standalone or distributed systems. The profile data is subsequently broadcast by Form to one or more views. Each view is a tool used to support program understanding or other software development activities. The authors describe the Form architecture and implementation, as well as a tool that was built using Form. This tool profiles Java-based distributed systems and generates UML sequence diagrams to describe their execution. We also present a case study that shows how this tool was used to extract sequence diagrams from a three-tiered EJB-based distributed application., We present Bayesian duration modeling and learning for speech recognition under nonstationary speaking rates and noise conditions. In this study, the Gaussian, Poisson and gamma distributions are investigated, to characterize duration models. The maximum a posteriori (MAP) estimate of the gamma duration model is developed. To exploit the sequential learning, we adopt the Poisson duration model, incorporated with gamma prior density, which belongs to the conjugate prior family. When the adaptation data are sequentially observed, the gamma posterior density is produced for twofold advantages. One is to determine the optimal quasi-Bayes (QB) duration parameter, which can be merged in HMM's for speech recognition. The other one is to build the updating mechanism of gamma prior statistics for sequential learning. An expectation-maximization algorithm is applied to fulfill parameter estimation. In the experiments, the proposed Bayesian approaches significantly improve the speech recognition performance of Mandarin broadcast news. Batch and sequential learning are investigated for MAP and QB duration models, respectively., source_sentence: Configurable security for scavenged storage systems
sentences: Scavenged storage systems harness unused disk space from individual workstations the same way idle CPU cycles are harnessed by desktop grid applications like Seti@Home. These systems provide a promising low cost, high-performance storage solution in certain high-end computing scenarios. However, selecting the security level and designing the security mechanisms for such systems is challenging as scavenging idle storage opens the door for security threats absent in traditional storage systems that use dedicated nodes under a single administrative domain. Moreover, increased security often comes at the price of performance and scalability. This paper develops a general threat model for systems that use scavenged storage, presents the design of a protocol that addresses these threats and is optimized for throughput, and evaluates the overheads brought by the new security protocol when configured to provide a number of different security properties., Histone methyltransferases are involved in many important biological processes, and abnormalities in these enzymes are associated with tumorigenesis and progression. Disruptor of telomeric silencing 1-like (DOT1L), a key hub in histone lysine methyltransferases, has been reported to play an important role in the processes of mixed-lineage leukemia (MLL)-rearranged leukemias and validated to be a potential therapeutic target. In this study, we identified a novel DOT1L inhibitor, DC_L115 (CAS no. 1163729-79-0), by combining structure-based virtual screening with biochemical analyses. This potent inhibitor DC_L115 shows high inhibitory activity toward DOT1L (IC50 = 1.5 μM). Through a process of surface plasmon resonance-based binding assays, DC_L115 was founded to bind to DOT1L with a binding affinity of 0.6 μM in vitro. Moreover, this compound selectively inhibits MLL-rearranged cell proliferation with an IC50 value of 37.1 μM. We further predicted the binding modes of DC_L115 through molecular docking anal..., Employing channel state information at the network layer, efficient routing protocols for equal-power and optimal-power allocation in a multihop network in fading are proposed. The end-to-end outage probability from source to destination is used as the optimization criterion. The problem of finding the optimal route is investigated under either known mean channel state information (CSI) or known instantaneous CSI. The analysis shows that the proposed routing strategy achieves full diversity order, equal to the total number of nodes in the network excluding the destination, only when instantaneous CSI is known and used. The optimal routing algorithm requires a centralized exhaustive search which leads to an exponential complexity, which is infeasible for large networks. An algorithm of polynomial complexity for a centralized environment is developed by reducing the search space. A distributed approach based on the Bellman-Ford routing algorithm is proposed which achieves a good implementation complexity-performance trade-off., source_sentence: Computationally efficient fixed complexity LLL algorithm for lattice-reduction-aided multiple-input–multiple-output precoding
sentences: ABSTRACTThe success of the open innovation (OI) paradigm is still debated and literature is searching for its determinants. Although firms’ internal social context is crucial to explain the success or failure of OI practices, such context is still poorly investigated. The aim of the paper is to analyse whether internal social capital (SC), intended as employees’ propensity to interact and work in groups in order to solve innovation issues, mediates the relationship between OI practices and innovation ambidexterity (IA). Results, based on a survey research developed in Finland, Italy and Sweden, suggest that collaborations with different typologies of partners (scientific and business) achieve good results in terms of IA, through the partial mediation of the internal SC., In multiple-input–multiple-output broadcast channels, lattice reduction (LR) preprocessing technique can significantly improve the precoding performance. Among the existing LR algorithms, the fixed complexity Lenstra–Lenstra–Lovasz (fcLLL) algorithm applying limited number of LLL loops is suitable for the real-time communication system. However, fcLLL algorithm suffers from higher average complexity. Aiming at this problem, a computationally efficient fcLLL (CE-fcLLL) algorithm for LR-aided (LRA) precoding is developed in this study. First, the authors analyse the impact of fcLLL algorithm on the signal-to-noise ratio performance of LRA precoding by a power factor (PF) which is defined to measure the relation of reduced basis and transmit power of LRA precoding. Then, they propose a CE-fcLLL algorithm by designing a new LLL loop and introducing new early termination conditions to reduce redundant and inefficient LR operation in fcLLL algorithm. Finally, they define a PF loss factor to optimise the PF threshold and the number of LLL loops, which can lead to a performance-complexity tradeoff. Simulation results show that the proposed algorithm for LRA precoding can achieve better bit-error-rate performance than the fcLLL algorithm with remarkable complexity savings in the same upper complexity bound., While multistage switching networks for vector multiprocessors have been studied extensively, detailed evaluations of their performance are rare. Indeed, analytical models, simulations with pseudo-synthetic loads, studies focused on average-value parameters, and measurements of networks disconnected from the machine all provide limited information. In this paper, instead, we present an in-depth empirical analysis of a multistage switching network in a realistic setting: we use hardware probes to examine the performance of the omega network of the Cedar shared-memory machine executing real applications. The machine is configured with 16 vector processors. The analysis suggests that the performance of multistage switching networks is limited by traffic non-uniformities. We identify two major non-uniformities that degrade Cedar's performance and are likely to slow down other networks too. The first one is the contention caused by the return messages in a vector access as they converge from the memories to one processor port. This traffic convergence penalizes vector reads and, more importantly, causes tree saturation. The second non-uniformity is the uneven contention delays induced by even a relatively fair scheme to resolve message collisions. Based on our observations, we argue that intuitive optimizations for multistage switching networks may not be cost-effective. Instead, we suggest changes to increase the network bandwidth at the root of the traffic convergence tree and to delay traffic convergence up until the final stages of the network. >
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Created: 2024-08-02 14:40:05