Miracle-dz/UniFAR-FTUs huggingface dataset:
Real-time bandwidth allocation and path restorations in SONET-based self-healing mesh networks

The authors present a scheme for optimal real-time bandwidth allocation and path restorations in a mesh network via SONET WDCS (wideband digital cross-connect system) in response to demand dynamics and to link and/or node failure(s). The scheme dynamically maximizes network throughput while ensuring full service restorability. In this process, the scheme integrates the dynamics of demand admission, bandwidth allocation, and spare capacity assignment. Since the physical network capacity is limited, not all the demand can be accommodated under the full restorability requirement. The demand which cannot be allocated under this requirement should be rejected at the network boundary. In the scheme, the optimal spare capacity assignment is just a consequence of the optimal network admission and optimal fully restorable bandwidth allocation. The authors also present an efficient parallel algorithm for optimal solution of the joint demand admission and restorable bandwidth allocation problem. The algorithm is suitable for real-time optimization in large networks. <<ETX>>
Implementation of the Pure Pursuit Path Tracking Algorithm

Abstract : The main purpose of this technical report is to describe in detail the implementation of the pure pursuit path tracking algorithm. Given the general success of the algorithm over the past few years, it seems likely that it will be used again in land-based navigation problems. This report also includes a geometric derivation of the method, and presents some insights into the performance of the algorithm as a function of its parameters.
A hybrid passivity based controller design for a three phase voltage source reversible boost type rectifier

We present a criteria to design the switching control sequence for a nonlinear system in a normal form when the control input exists in a finite set. The criteria is based on the minimization of a Lyapunov function and the concept of output regulated subspaces presented by Ludvingsen et al. (1998). Moreover, we propose to modify the controller by adding a passivity based algorithm in order to improve the transient behavior and reduce the control effort. The technique is applied to the well known three phase boost type rectifier for which simulations results are provided in order to show the improvement in the transient response. Results are compared with the controller based in sliding mode approach reported by Sabanovic-Behlilovic et al. (1994).
Structured servo controller design using output-feedback

The authors propose a general linear quadratic tracker formulation using output-feedback that allows the use of a dynamic compensator of prescribed structure. The performance index is of a general form that covers various design objectives and includes time weighting of the form t/sup k/, as well as steady-state error weighting. Necessary conditions for the optimal control gains are found. The correct initial conditions for the optimal design are not uniformly distributed as usually assumed, but have specific values as derived here. <<ETX>>
A Relational Thinking Process of Elementery School Students with High Capability

The objective of this paper is to analyze the relational thinking process of the fifth year students with high capability in mathematics when they face mathematical problems. Two students, girl and boy, were chosen as subjects with high-capability in mathematics. Data were obtained through in-depth interviews based on the task of problem solving. All data were video-recorded. To obtain credible data, consistency and perseverance (improving perseverance), time triangulation and member check were observed. The obtained data were analyzed using a flow chart consisting of three-flow activities occuring simultaniously namely: data reduction, data presentation and conclusion drawing. The results suggest that the relational thinking processes of male and female students when facing mathematical problems by constructing inter- and intra-relation between two core elements in solving mathematic problems are that they understood the problems and answered the questions in the problems. The relations made by the male students were richer than those by female students.
Scapaundulins A and B, Two Novel Dimeric Labdane Diterpenoids, and Related Compounds from the Japanese Liverwort Scapania undulata (L.) Dum.

Abstract Two novel dimeric labdane diterpenoids, scapaundulins A ( 4 ) and B ( 5 ), have been isolated from the ether extract of the Japanese liverwort Scapania undulata (L.) Dum. , together with three new labdane diterpenoids ( 1–3 ) and their structures characterized by spectroscopic techniques, especially 2D-NMR and mass spectrometry. The structures of scapaundulins possess a C 2 axis of symmetry.
An Integrated Measurement System for Pyromagnetic Effect of Prefabricated Defects Polymer Materials

There exist multi-field coupling effect in prefabricated defects polymer materials under loading. For understanding the pyromagnetic effect, it is crucial to accurately measure the coupling relations of the key physical quantities about displacement, tensile load, temperature, and magnetic field. To overcome the obstacle in current measurement systems for synchronized measurement, an integrated measurement system for multi-field coupling detection is presented to enable synchronized, automatic detection. This paper introduces the system structure, software design, and the detailed design of varied-speed PID control methods. Test results show that, the system is effective for valid data acquisition for displacement, tension load, temperature and magnetic field of a high polymer Polyvinyl Chloride (PVC) plate sample under constant tensile load, and all test data can be visualized on the software interface. This system provides a good test platform for further research on pyromagnetic effect of PVC plate.
Email, Self-Regulation, Self-Efficacy, and Achievement in a College Online Mathematics Course

The purpose of this study was to: (a) investigate the effects of email to enhance learners' use of self-regulation strategies; (b) examine different effects between email list and individually addressed notes on the enhancement of self-regulation; (c) observe and record changes in self-regulation and self-efficacy; and (d) explore the relationships among self-regulation, self-efficacy, and achievement. For an entire semester, 103 college students enrolled in an online, asynchronous mathematics course participated in this study. They were randomly assigned to one of three groups. The first group received self-regulation strategies without personalized messages; the second group received self-regulation strategies with personalized messages; and the third group received neither self-regulation strategies nor personalized messages. Results indicated that there was no statistically significant effect for the email treatments but a statistically significant relationship was observed between self-efficacy and achievement. The findings are discussed with an emphasis on the reciprocal relations between self-efficacy and self-regulation.
Training individuals with chronic severe Broca's aphasia to produce sentences using graphic symbols: implications for AAC intervention

Individuals with severe speech and language impairment as a result of chronic severe Broca's aphasia may rely on non‐speech communication aids to augment or replace speech. These aids include speech‐generating devices and graphic symbol software programs that produce synthetic speech upon activation. Previous research has indicated that individuals with chronic severe Broca's aphasia are able to identify, manipulate, and combine graphic symbols to produce simple phrases and sentences. The primary aim of this study is to evaluate the ability of three individuals with chronic severe Broca's aphasia to produce graphic symbol sentences of varying levels of complexity using a speech generating device. A single‐subject multiple‐baseline design across behaviours replicated across three participants was used to assess the effect of AAC intervention on the production of sentences using graphic symbols. Findings indicated that individuals with chronic severe Broca's aphasia were able to combine graphic symbols to produce sentences of varying levels of complexity. The results of this study suggest that technologically‐based AAC intervention approaches can be effective in facilitating communication for individuals with chronic severe Broca's aphasia. The overall findings are discussed in terms of clinical and public policy implications.
A Re-examination Of Volatility Spillovers InEuropean Government Bond Markets UsingA Multi-objective Artificial Network

In this paper we extend prior efforts to engineer an efficient mapping of volatility transmission across various westernand central-European government bond markets. Prior research efforts report that the closed-form derivation of the regularization parameter embodied by the Kajiji-4 RBF ANN results in an efficient minimization of the ill-effects of multi-collinearity while attaining maximum smoothness in nonparametric time series analysis. This computational innovation provides the raison d’etre for a comparative re-examination of volatility spillover effects obtained from the study of parametric-based conditional volatility investigations. The current research calibrates the Kajiji-4 ANN to produce new evidence on volatility flows. The two step research method focuses first on the art of ANN engineering of financial time-series. The method then focuses on the resultant modelling efficiency by introducing an investigatory ARCH-framework as well as a classification-directed ANN. The post-modelling efficiency tests certify the ex-ante expectation for the Kajiji-4 RBF ANN to produce residuals that are devoid of latent economic covariance and conditional volatility effects. Moreover, we find that the estimated Kajiji-4 network parameters yield corroborative evidence that supports the broader findings in the extant literature on bond volatility-spillover effects. However, the non-parametric approach also produced results that challenge some contemporary findings. Most notably, the research findings contradict the view of a weak US volatility-spillover into EMU countries with a correspondingly strong spillover effect for non-EMU countries.
Distributed attention in large scale video sensor networks

As distributed surveillance networks are deployed over larger areas and in increasingly busy environments, limiting the computation, bandwidth, and human attention burdens imposed is becoming critical. We describe a system addressing this problem which uses layered, in-network processing on each camera to filter out uninteresting events locally, avoiding disambiguation and tracking of irrelevant environmental distractors. Coupled with this is a factor-graph-based resource allocation algorithm which steers pan-tilt cameras to follow interesting targets while maintaining a "peripheral awareness" of emerging new targets. We describe this distributed attention mechanism and our implementation of this high-level architecture in a video sensor network.
Communication Processes for Virtual Organizations

Communication is fundamental to any form of organizing but is preeminent in virtual organizations. Virtual organizations are characterized by (a) highly dynamic processes, (b) contractual relationships among entities, (c) edgeless, permeable boundaries, and (d) reconfigurable structures. Relative to more traditional settings, communication processes that occur in virtual contexts are expected to be rapid, customized, temporary, greater in volume, more formal, and more relationship-based. To glean insight into communication processes for virtual organizations, we draw on the rich body of literature on synchronous and asynchronous electronic organizational communication. The vast set of empirical findings regarding mediated communication can foreshadow how communication will change as firms “go virtual. ” Six areas of electronic communication research provide implications for the major aspects of virtual organization design: (1) communication volume and efficiency, (2) message understanding, (3) virtual tasks, (4) lateral communication, (5) norms of technology use, and (6) evolutionary effects.
AUTOMATING THE DRIVER'S CONTROL TASKS

The research reported in this article considers the effects of automating driver's control tasks. Driving can be broken down into 3 general subtasks: navigation, control, and hazard avoidance. Control can be further subdivided into lateral control (position in lane) and longitudinal control (speed and leading headway). Lateral control can be automated by an active steering (AS) system, and longitudinal control can be automated by an adaptive cruise control (ACC) system. Previous research has used driving simulators to consider the effects of driver workload and the ability to reclaim control with these systems. There are, however, some questions about the validity of driving simulators, and this research sought to validate a driving simulator. This was achieved by comparing responses on a secondary task and driving style questionnaire in both a road car and a driving simulator. When validity was established, a comparison of 4 levels of automation was undertaken: manual, ACC, AS, and ACC plus AS. The resul.
Sisterhood in prosodic branching*

This article discusses the syntax–prosody interface, drawing on evidence from Stockholm Swedish. It is shown that a Swedish main clause containing an embedded clause has three prosodic correlates, two of which are non-isomorphic to the syntactic bracketing. However, two coordinated clauses have only one – isomorphic – prosodic correlate. Optimality-theoretic constraints (Prince & Smolensky 1993) are used to derive this variation. A new markedness constraint, EqualSisters, is argued to be responsible for a preference for flat prosodic structures. This constraint requires that sister nodes in prosodic structure belong to the same prosodic category, and therefore sometimes conflicts with match constraints, which call for syntax–prosody correspondence (Selkirk 2009, 2011). When high-ranked, EqualSisters forces syntax–prosody non-isomorphism if the input syntactic structure contains embedding, whereas full isomorphism is predicted in coordinated structures. The previously suggested markedness constraints Non-recursivity and Exhaustivity (Selkirk 1996) cannot replace EqualSisters, and in the present account are rendered redundant.
Investigating Malaysian distance learners’ perceptions of their English proficiency courses

The paper describes a study that investigated Malaysian distance learners’ perceptions of their English proficiency courses. The approach used in this study was primarily a quantitative approach based on questionnaires, with a qualitative component based on semi‐structured interviews included to add depth and scope to the study. The questionnaires used were adapted from Entwistle and Ramsden’s Course Perception Questionnaire. ANOVA and factor analysis were used for analysing the questionnaire data. The interview data were analysed qualitatively by identifying main themes and patterns. While the analysis of the questionnaires and the interview data generated roughly comparable results, there were some interesting differences. The main difference was that the interviews demonstrated that the majority of the 13 distance learners interviewed would prefer more support and guidance rather than greater freedom as evident in the questionnaire data. The results of the interviews provide a useful supplement to the quantitative data and give us a better understanding of the factors that influence learners within a distance learning environment.
Learning fuzzy cognitive maps with required precision using genetic algorithm approach

Fuzzy cognitive maps (FCMs) are a powerful and convenient tool for describing and analysing dynamic systems. Their generic design is performed manually, exploits expert knowledge and is quite tedious, especially in the case of larger systems. This shortcoming is alleviated by completing the design of FCMs through learning carried out on experimental data. Comprehensive experiments reveal that this approach helps design models of required accuracy in an automated manner.
Design and evaluation of security multimedia warnings for children's smartphones

This article describes primarily the development and empiric validation of a design for security warning messages on smartphones for primary school children (7-10 years old). Our design approach for security warnings for children uses a specific character and is based on recommendations of a paediatrician expert. The design criteria are adapted to children's skills, e.g. their visual, acoustic, and haptic perception and their literacy. The developed security warnings are prototypically implemented in an iOS application (on the iPhone 3G/4G) where children are warned by a simulated anti-malware background service, while they are busy with another task. For the evaluation we select methods for empiric validation of the design approach from the field of usability testing ("think aloud" test, questionnaires, log-files, etc.). Our security warnings prototype is evaluated in an empiric user study with 13 primary school children, aged between 8 and 9 years and of different gender (5 girls, 8 boys). The evaluation analysis shows, that nearly all children liked the design of our security warnings. Surprisingly, on several security warning messages most of the children react in the right way after reading the warning, although the meaning couldn't be interpreted in the right way. Another interesting result is, that several children relate specific information, e.g. update, to a specific character. Furthermore, it could be seen that most of the primary school test candidates have little awareness of security threats on smartphones. It is a very strong argument to develop e.g. tutorials or websites in order to raise awareness and teach children how to recognize security threats and how to react to them. Our design approach of security warnings for children's smartphones can be a basis for warning on other systems or applications like tutorials, which are used by children. In a second investigation, we focus on webpages, designed for children since smartphones and webpages (the services behind) are more and more interconnected. From this point of view those services should continue the securityapproaches for children's smartphones. The webservices were evaluated among different criteria, e.g. data protection. The results of a first investigation are reported in this paper.
Random phase encoding for optical security

A new optical encoding method for security applications is proposed. The encoded image (encrypted into the security products) is merely a random phase image statistically and randomly generated by a random number generator using a computer, which contains no information from the reference pattern (stored for verification) or the frequency plane filter (a phase‐only function for decoding). The phase function in the frequency plane is obtained using a modified phase retrieval algorithm. The proposed method uses two phase‐only functions (images) at both the input and frequency planes of the optical processor leading to maximum optical efficiency. Computer simulation shows that the proposed method is robust for optical security applications.
A novel reduction approach to analyzing QoS of workflow processes

Quality of service (QoS) of workflows and workflow-based applications is given increasing attention by both industry and academic. In this paper, we propose a novel analytical framework to analyze QoS (metrics include make-span, cost, and reliability) of workflow systems based on GWF-net, which extends traditional workflow net by associating tasks with generally distributed firing delay and time-to-failure. The GFW-net model is used to model process structure and task organization of workflows at the process level. In contrast with prevailing QoS models based on Markovian process, we introduce a reduction technique to evaluate QoS of GWF-net process avoiding the state-explosion problem and tedious mathematical derivation of state-transition probabilities. Through a case study, we show that our framework is capable of modeling real-world workflow-based application effectively. Also, experiments and confidence-interval analysis in the case study indicate that the reduction methods are verified by real results. We also compare our approach with related research in the text. Copyright © 2008 John Wiley & Sons, Ltd.
Harnessing the complexity of metabolomic data with chemometrics

Because of the ever-increasing number of signals that can be measured within a single run by modern platforms in analytical chemistry, life sciences datasets become not only gradually larger but also more intricate in their structures. Challenges related to making use of this wealth of data include extracting relevant elements within massive amounts of signals possibly spread across different tables, reducing dimensionality, summarising dynamic information in a comprehensible way and displaying it for interpretation purposes. Metabolomics constitutes a representative example of fast-moving research fields taking advantage of recent technological advances to provide extensive sample monitoring. Because of the wide chemical diversity of metabolites, several analytical setups are required to provide a broad coverage of complex samples. The integration and visualisation of multiple highly multivariate datasets constitute key issues for effective analysis leading to valuable biological or chemical knowledge. Additionally, high-order data structures arise from experimental setups involving time-resolved measurements. These data are intrinsically multiway, and classical statistical tools cannot be applied without altering their organisation with the risk of information loss. Dedicated modelling algorithms, able to cope with the inherent properties of these metabolomic datasets, are therefore mandatory for harnessing their complexity and provide relevant information. In that perspective, chemometrics has a central role to play. Copyright © 2013 John Wiley & Sons, Ltd.
Ground-based retrieval of very low to high columnar integrated water vapor using combined millimeter-wave and microwave observations

Precipitable water vapor (PWV) and liquid water path (LWP) retrievals using zenith view passive microwave observations near the 22.235 GHz water vapor line are known to be of high accuracy for most mid-latitude profiles. However in very dry atmospheres (PWV<10 mm), such as those experienced in the Arctic winter, the percentage accuracy of these retrievals becomes poor due to the weakness of the 22 GHz feature. The authors describe an adaptable physical retrieval algorithm which uses any number of channels in the range 10-300 GHz to retrieve PWV and LWP. Using a database of model high latitude profiles, the authors investigate the performance of various channel combinations in the range 23 to 183 GHz for retrieving PWV and LWP. The authors demonstrate that the best retrieval performance over the expected range of PWV and LWP in high-latitude climates is made with combinations that include channels near the 22 GHz absorption line and the much stronger 183.31 GHz line. This analysis is applicable to optimizing the measurement strategy for studying the influence of water vapor on the Earth's radiation budget in Arctic areas.