Miracle-dz/UniFAR-FTUs huggingface dataset:
Is online delivery less costly than print and is it meaningful to ask

The costs of shifting from print‐based to online delivery arc examined in relation to the three principal rationales that are commonly advanced to justify such a shift: saving costs, improving quality, and increasing access. The projected costs of converting an existing print‐based subject to online delivery arc analysed. Based on this analysis, it is argued that, at least in the Australian context, it is difficult to justify the shift to online delivery in terms of cost saving alone. Rather, such a shift needs to be justified in strategic terms. A possible strategic rationale for shifting to online delivery is articulated.
Nonlinear Cointegration Analysis Based on Support Vector Machines and Its Application to the Connection between Financial Markets

With the purpose of analyzing non-stationary time series, this paper introduced a novel nonlinear cointegration discriminate analysis by employing support vector machines to overcome existing limitations of two methods, that is, the statistical approach and the neural network used by the nonlinear cointegration theory. The proposed nonlinear cointegration discriminate analysis can effectively address the key step in the nonlinear cointegration test. Then, the application of the innovated method in the investigation of the connection between financial markets was explored. The empirical analysis demonstrates that the support vector machine is significant in investigating the money demand function and its stability and has advantages in dealing with nonlinear cointegration relations among different financial variables and estimating nonlinear function over the two methods above.
Evolution of wireless data services: IS-95 to cdma2000

Existing IS-95-based CDMA systems support circuit-mode and packet-mode data services at a data rate limited to 9.6-14.4 kb/s. Fueled by the explosive growth of the Internet, applications and market opportunities are demanding that higher capacity, higher data rates, and advanced multimedia services be supported in the near future. The evolution of the IS-95 CDMA standard to higher data rates and more advanced services occurs in two steps. The first step, IS-95-B, is an enhancement to the IS-95-A standard and offers the highest possible performance without breaking current IS-95-A air interface design characteristics, thereby maintaining strict compatibility with existing base station hardware. The proposed standard will support a high data rate (64 kb/s) in both directions, to and from the mobile device. A new burst mode packet data service is defined to allow better interference management and capacity utilization. The second evolution step, cdma2000, provides next-generation capacity, data rates, and services. The cdma2000 system includes a greatly enhanced air interface supporting CDMA over wider bandwidths for improved capacity and higher data rates while also maintaining backward compatibility with existing IS-95 CDMA end-user devices. The cdma2000 system also includes a sophisticated MAC feature to effectively support very-high-data-rate services (up to 2 Mb/s) and multiple concurrent data and voice services. This article describes the design and performance of the high-data-rate service provided by second- and third-generation CDMA systems.
Efficient registration of limited field of view ocular fundus imagery

E cient Registration of Limited Field of View Ocular Fundus Imagery C.C. van der Westhuizen Electrical and Electronic Engineering, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa. Thesis: MScEng (Electronic) December 2013 Diabeticand hypertensive retinopathy are two common causes of blindness that can be prevented by managing the underlying conditions. Patients suffering from these conditions are encouraged to undergo regular examinations to monitor the retina for signs of deterioration. For these routine examinations an ophthalmoscope is used. An ophthalmoscope is a relatively inexpensive device that allows an examiner to directly observe the ocular fundus (the interior back wall of the eye that contains the retina). These devices are analog and do not allow the capture of digital imagery. Fundus cameras, on the other hand, are larger devices that o er high quality digital images. They do, however, come at an increased cost and are not practical for use in the eld. In this thesis the design and implementation of a system that digitises imagery from an ophthalmoscope is discussed. The main focus is the development of software algorithms to increase the quality of the images to yield results of a quality closer to that of a fundus camera. The aim is not to match the capabilities of a fundus camera, but rather to o er a cost-e ective alternative that delivers su cient quality for use in conducting routine monitoring of the aforementioned conditions. For the digitisation the camera of a mobile phone is proposed. The camera is attached to an ophthalmoscope to record a video of an examination. Software algorithms are then developed to parse the video frames and combine those that are of better quality. For the parsing a method of rapidly selecting valid frames based on colour thresholding and spatial ltering techniques are developed. Registration is the process of determining how the selected ii Stellenbosch University http://scholar.sun.ac.za
A Memory Profiling Tool for Performance Tuning of OLTP Workloads

The performance of CPU has been improved more than 50% per year but the performance improvement of mem- ory in latency is much lower than those of CPU. Therefore the penalty of memory access has been increased every year. Recent works show optimization on scientific workloads is not effective on commercial workloads like DBMSs. We have developed a memory profiling tool to collect performance information for OLTP and evaluated the effectiveness of the tool.
Advances in cryptology, EUROCRYPT '93 : Workshop on the Theory and Application of Cryptographic Techniques, Lofthus, Norway, May 23-27, 1993 : proceedings

Authentication. - On the Relation Between A-Codes and Codes Correcting Independent Errors. - Optimal Authentication Systems. - Public Key. - Factoring Integers Using SIMD Sieves. - A New Elliptic Curve Based Analogue of RSA. - Weaknesses of a public-key cryptosystem based on factorizations of finite groups. - Block Ciphers. - Differentially uniform mappings for cryptography. - On Almost Perfect Nonlinear Permutations. - Two New Classes of Bent Functions. - Boolean functions satisfying a higher order strict avalanche criterion. - Secret Sharing. - Size of Shares and Probability of Cheating in Threshold Schemes. - Nonperfect Secret Sharing Schemes and Matroids. - Stream ciphers. - From the memoirs of a Norwegian cryptologist. - On the Linear Complexity of Products of Shift-Register Sequences. - Resynchronization Weaknesses in Synchronous Stream Ciphers. - Blind Synchronization of m-Sequences with Even Span. - On Constructions and Nonlinearity of Correlation Immune Functions. - Digital signatures. - Practical and Provably Secure Release of a Secret and Exchange of Signatures. - Subliminal Communication is Easy Using the DSA. - Can O.S. S. be Repaired? - Proposal for a New Practical Signature Scheme -. - Protocols I. - On a Limitation of BAN Logic. - Efficient Anonymous Channel and All/Nothing Election Scheme. - Untransferable Rights in a Client-Independent Server Environment. - Interactive Hashing Simplifies Zero-Knowledge Protocol Design. - Hash Functions. - One-Way Accumulators: A Decentralized Alternative to Digital Signatures. - The breaking of the AR Hash Function. - Collisions for the compression function of MD5. - How to Find and Avoid Collisions for the Knapsack Hash Function. - Payment Systems. - Single Term Off-Line Coins. - Improved Privacy in Wallets with Observers. - Distance-Bounding Protocols. - Cryptanalysis. - On the Distribution of Characteristics in Bijective Mappings. - On the Security of the IDEA Block Cipher. - Linear Cryptanalysis Method for DES Cipher. - New Types of Cryptanalytic Attacks Using Related Keys. - Protocols II. - Secret-Key Reconciliation by Public Discussion. - Global, Unpredictable Bit Generation Without Broadcast. - Rump Session. - On Schnorr's Preprocessing for Digital Signature Schemes. - Cryptanalysis of the Chang-Wu-Chen key distribution system. - An Alternate Explanation of two BAN-logic "failures". - The Consequences of Trust in Shared Secret Schemes. - Markov Ciphers and Alternating Groups. - On Key Distribution and Authentication in Mobile Radio Networks.
The features of interactive whiteboards and their influence on learning

In a small‐scale study of Information and Communication Technology (ICT)‐rich primary school, interactive whiteboards (IWBs) were found to be the predominant ICT tools used by teachers. The study sought to identify how the teachers used features of ICT to enhance learning, based on a list of ICT’s functions published for teacher education programmes. This list did not appear to account for all the aspects of the IWB’s influence that were described by teachers and observed in their lessons. Interview and observation data concerning digital whiteboard technology were probed further, using a framework for analysing activity settings designed for teaching and learning. This process generated a new taxonomy of features of ICT involving two levels: those intrinsic to digital media and devices and those constructed by hardware designers, software developers and teachers preparing resources for learning. Pedagogical actions supported by these features were identified and views concerning the impact of these actions on learning were analysed. This article reports the findings of the analysis, and exemplifies a use of the taxonomy in comparing practice across subjects. It suggests that this focus on ICT’s features may be valuable for both future research on the impact of ICT on learning and the design of new ICT resources.
Adaptive lossy LZW algorithm for palettised image compression

An adaptive lossy LZW algorithm is proposed for palettised image compression, that is a generalised algorithm of the conventional lossless LZW algorithm. The new algorithm employs an adaptive thresholding mechanism with human visual characteristics to constrain the distortion. With this distortion control, the compression efficiency is increased by ~40% for natural colour images, while maintaining good subjective quality on the reconstructed image. In addition, the encoded image file format is compatible with the original GIF decoder.
Learning English grammar with a corpus: Experimenting with concordancing in a university grammar course

Abstract Corpora have been used for pedagogical purposes for more than two decades but empirical studies are relatively rare, particularly in the context of grammar teaching. The present study focuses on students' attitudes towards grammar and how these attitudes are affected by the introduction of concordancing. The principal aims of the project were to increase the students' motivation by showing them that English grammar is more than a set of rules in a book and to enable them to assume more responsibility for their own learning. The idea was to introduce the use of language corpora into the curriculum for first-semester English at Växjö University in Sweden, as a complement to grammar textbooks and ordinary exercise materials. Between classes, the students worked with problem-solving assignments that involved formulating their own grammar rules based on the examples they found in the corpus. In the classroom, a system of peer teaching was applied, where the students took turns at explaining grammatical rules to each other. Besides presenting a new way of working with grammar, we also provided the students with a tool for checking questions of usage when writing English texts in the future, since the corpus we use is free of charge and available to all. The work with corpora and peer teaching was evaluated by means of questionnaires and interviews. This article describes and evaluates this initiative and presents insights gained in the process. One important conclusion is that using corpora with students requires a large amount of introduction and support. It takes time and practice to get students to become independent corpus users, knowing how to formulate relevant corpus queries and interpret the results. Working with corpora is a method that some students appreciate while others, especially weak students, find it difficult or boring. Several of the students did not find corpora very useful for learning about grammatical rules, but realized the potential of using corpora when writing texts in English.
Research on Novel Effective Resource Management in Cloud Computing

Cloud computing has been extensively focused by both industry and academia. Resource management and scheduling is a basic and important problem in cloud computing environment. This paper proposes a new and effective cloud resource management model and scheduling algorithm based on fuzzy clustering and Distributed hash Table. By introducing effective theory and technology, the proposed approach can: (1) subtly assign the appropriate resources to the requestors that exactly satisfy its’ needs of resources, while effectively avoid unreasonable scheduling of resources; (2) rapidly and effectively locate the resources that literally satisfy the needs of the resource requestor. Simulation experiments show that the proposed approach works better than similar algorithms.
Technical Note: Detecting and Subcategorizing Hard-coding Errors in Bioenergy-relevant Spreadsheets Using Visual Basic for Applications (VBA)

Electronic spreadsheets play an indispensable role in the simulation, modeling, and analysis of bioenergy systems, and their results have the ability to affect decision-making significantly. Prior research has shown that spreadsheets are highly error-prone, and that a large percentage of these errors are difficult to detect. To that end, we developed computer code (implemented in Visual Basic for Applications, running under Microsoft Excel) to detect a particularly insidious form of spreadsheet error: the hard-coding error. These errors are defined as the presence of one or more unreferenced numerical values in a cell formula. The code was used to audit six engineering spreadsheets relevant to bioenergy systems, three developed in our lab (and reported on in other sessions at the AIM), and three in the public domain. The preliminary audit results were analyzed to understand the nature and distribution of hard-coding errors. The preponderance and diversity of hard-coding errors in these spreadsheets motivated us to subcategorize them. Together, the hard-coding error detection program and sub-categorization program provide a robust and rapid means of detecting and categorizing multiple types of hard-coding errors. Use of these programs could increase the reliability of spreadsheet software used in simulation, modeling, and analysis of bioenergy systems.
Distributed Task Allocation in Multi-Robot Systems Using Argumentation-Based Negotiation

The continuous growing of application’s complexity and increased interest in automated negotiation brought recently researcher’s attention to persuasive negotiation (PN) and argumentation-based negotiation (ABN). The Market-based approach has gained popularity in the last decade due to its flexibility, speed and robustness. Contract Net protocol inspired algorithms have been proved suitable for allocating weakly coupled tasks in robot teams, but there are still some challenges when addressing complex application in uncertain environments. In this context the purpose of the paper is to present a method to allocate tasks in multi-robot systems through the use of augmentation- based negotiation.
P-351 Improving Seismic Resolution through High Frequency Imaging

It has always been a challenge to resolve thin beds through seismic imaging. Many of the recent hydrocarbon discoveries in India as well as in other parts of the world involve these types of reservoir pays. The conventional thinking assumes that only the beds thicker than one fourth of the dominant wavelength can be resolved. Higher frequency data can improve vertical resolution. The benefits of improving the resolution include better definition of pinch-outs, and resolving internal bed geometries.
PodCastle: A Spoken Document Retrieval System Improved by User Contributions

In this paper, we describe a public web service, ``PodCastle'', that provides full-text searching of speech data (Japanese podcasts) on the basis of automatic speech recognition technologies. This is an instance of our research approach, ``Speech Recognition Research 2.0'', which is aimed at providing users with a web service based on Web 2.0 so that they can experience state-of-the-art speech recognition performance, and at promoting speech recognition technologies in cooperation with anonymous users. PodCastle enables users to find podcasts that include a search term, read full texts of their recognition results, and easily correct recognition errors by simply selecting from a list of candidates. Even if a state-of-the-art speech recognizer is used to recognize podcasts on the web, a number of errors will naturally occur. PodCastle therefore encourages users to cooperate by correcting these errors so that those podcasts can be searched more reliably. Furthermore, using the resulting corrections to train the speech recognizer, it implements a mechanism whereby the speech recognition performance is gradually improved. Our experience with this web service showed that user contributions we collected actually improved the performance of PodCastle.
Dealing with orphans: Catalogue synchronisation with SynCat

In the gLite grid model a site will typically have a Storage Element (SE) that has no direct mechanism for updating any central or experiment-specific catalogues. This loose coupling was a deliberate decision that simplifies SE design; however, a consequence of this is that the catalogues may provide an incorrect view of what is stored on a SE. In this paper, we present SynCat: a mechanism to allow catalogues to re-synchronise with SEs. The paper describes how catalogues can be sure, within certain tolerance, that files believed to be stored at various SEs are really stored there. SynCat also allows catalogues to be aware of transitory file metadata (such as whether a file normally stored on tape is currently available from disk) with low latency.
A 54-GHz distributed amplifier with 6-VPP output for a 40-Gb/s LiNbO3 modulator driver

We have developed a distributed amplifier for a LiNbO/sub 3/ modulator driver using double-doped AlGaAs-InGaAs-AlGaAs pseudomorphic high electron mobility transistors (p-HEMTs). By using a stabilization and negative resistance control technique with source inductance and grounded coplanar waveguided lines, we obtained a gain of 15 dB, a bandwidth of 54 GHz, and 6-V/sub PP/ output. These results indicate that our circuit is a leading candidate for use as a LiNbO/sub 3/ modulator driver in 40-Gb/s fiber-optic communication systems.
Improvement of the selectivity of citation indexes to science literature through inclusion of citation relationship indicators

Citation indexes to large bodies of science literature can often list far more citing references under the known cited reference than the user can afford the time to look up. By providing some additional information, beyond the minimal association of the citing reference with the cited reference, a citation index could provide the means for the user to select from a long list those citing references which are most relevant to his immediate search requirement. Means of providing this selectivity are discussed. Particular attention is given to the possibility of adding short codes to the citation entries which would be informative on the way in which the citing publication is operationally related to the cited one (this method is an integral feature of the Shepard's legal citations). A scheme of citation relationships of potential value to users of science literature is presented. These relationships were tested on a sampling of physics literature. The suggested categories include indicators of the relation of the citing reference to the scientific process in general, as well as indicators of its relationship to the cited reference in particular. Assignment of the categories to a citation requires the exercise of judgment, as in subject indexing, but does not involve the use of subject terminology. An illustration is provided of the application of citation relationship indicators to an excerpt from a citation index to physics literature.
Controlling chaotic systems via nonlinear state feedback and linear H ∞ controller design

In this paper, a method for controlling chaotic systems, such as Lorenz system, Chen system and Lu system is described; which is composed by a nonlinear state vector feedback and a linear H∞ controller. With this method the objective is to stabilize chaotic oscillations to a steady state, as well as tracking a desired trajectory. In order to physical implementation a discrete time H∞ controller is used with adjusted sample time, and analogic implementation is used for nonlinear part of the controller. Computer simulations are given and analyzed for the purpose of illustration and verification.
Practical Phase Retrieval

This paper summarizes the current experience with phase retrieval at the University of Canterbury. While Fienup's algorithms need no modification for handling computer generated intensities corresponding to images that exhibit strong contrast, they must be extended to obtain satisfactory reconstruction of low contrast images. These same extensions, which have been incorporated into a composite computational procedure, tend also to be necessary when the given data are measured or are reduced from observations. The several steps in the procedure as it presently stands are described and discussed. Other steps, which are needed to widen the class of practically recoverable images and to make the procedure more objective, are suggested.
A model predictive control-based approach for spacecraft formation keeping and attitude control

In this paper we report on the application of a model predictive control-based approach to the design of a controller for formation keeping and formation attitude control, with applications to spacecraft formation flight problems such as NASA's DS3 mission. Control laws for formation keeping and attitude control are designed using a combined approach of feedback linearization and model predictive control. Actuator saturation is incorporated into the controller design. Switching between coordinated frames is incorporated to overcome singularities associated with local feedback linearization.