Miracle-dz/UniFAR-FTUs huggingface dataset:
Practical multiple-antenna solutions for enhancing adaptive OFDM performance in mm-wave WPANs

The design of short-range high-speed wireless networks for the 60 GHz band requires consideration of factors from a wide range of disciplines. Key system choices that make significant differences to the final cost and performance include the type of antennas, multiple access strategy and channel coding. In this paper we assume a coded orthogonal frequency division multiplexing (OFDM) system providing high-speed communications between low-cost terminals over indoor 60 GHz channels that are frequently non-line-of-sight. Under constraints of low transmit power and high path attenuation, we consider two practical options for using multiple low-cost ‘bond-wire’ antennas, compared with ideal monopole antennas at each terminal. For specified multiple access and channel coding schemes, we show that a sectorized strategy based on simple 2 element phased arrays can provide substantial benefits in system performance and flexibility. Copyright © 2009 John Wiley & Sons, Ltd. A practical multiple-antenna solution is presented for use in providing high-speed communications bet ween low-cost terminals over indoor 60 GHz channels that are frequently non line-of-sight. Two practical options for using multiple low-cost ‘bondwire’ antennas are compared to ideal monopole antennas at each terminal. For a specified multiple access scheme and two variants of an adaptive coded OFDM scheme, we show that a sectorised strategy based on simple 2 element phased arrays can provide substantial benefits in system performance and flexibility. Copyright © 2009 John Wiley & Sons, Ltd.
Computer Modeling of Musical Intelligence in EMI

Musical intelligence may be defined as the "simulation of musical thinking. " The algorithm presented in this article reflects the author's approach to music composition and hence represents one "simulation of musical thinking. " Implementations of this algorithm create new compositions by way of a reflexive pattern-matcher combined with an augmented transition network (ATN). This subprogram of the Experiments in Musical Intelligence (EMI) software package requires only that it be loaded with music in a given style. Although the entire code of the EMI program is not provided here, the algorithm in Fig. 1 and the respective code, as well as the ideas presented in the books and articles by the author listed in the References, should serve as a useful introduction to the EMI program. While music naturally includes timbre, dynamics, performance practice (Dannenberg 1989), and so on, research with EMI has thus far focused exclusively on pitch and duration. This is not meant to denigrate other areas of possible study. However, this limitation confines the research to a reasonable
A \free" approach to Computational Aeroelasticity

In recent years some challenging aeroelastic problems have been tackled for the very rst time, such as the numerical study of transonic utter. To study those highly nonlinear phenomena the classical, computationally e cient, linearized numerical tools are not reliable. It is then necessary to focus on the more sophisticated mathematical models and numerical methods of Computational Aeroelasticity (CA). In this paper we demonstrate that a toolbox to e ectively solve non-linear aeroelastic problems can be built using (and improving) exclusively free software, such as the FE structural solver Code Aster and the FV aerodynamic solver OpenFOAM coupled by means of a robust interpolation scheme. The credibility of the developed set of analysis procedures is assessed on the aeroelastic benchmark test problem of computing the utter boundary for the AGARD 445.6 wing.
Nonlinear Adaptive Manifold Self-Organizing Map with Reproducing Kernels and its Application to Pose Invariant Face Recognition

Adaptive Manifold Self-Organizing Map (AMSOM) is an evolution of Self-Organizing Maps, where each computational unit deﬁnes a linear aﬃne subspace (manifold). The aﬃne subspace in a unit is represented by a mean vector and a set of basis vectors. After training, these units result in a set of aﬃne subspace detectors. In complex situations, however, these are not enough to describe a class of patterns because of its linearity. In this paper, the AMSOM in the high-dimensional space with reproducing kernels, referred to as Nonlinear Adaptive Manifold Self-Organizing Map (NAMSOM) is proposed in order to achieve eﬃcient classiﬁcation and visualization of relations between classes. By using the reproducing kernels, linear aﬃne subspaces in the AMSOM can be extended to nonlinear aﬃne subspaces easily. To verify the eﬀectiveness of the proposed method, it was applied to face recognition under varying pose as a practical example.
An Introduction to Distributed and Parallel Processing

Parallel computers: Parallelism and interaction A brief history of parallelism Parallel architectures. Distributed systems: Fully distributed processing systems Networks and interconnection structures Designing a distributed processing system. Programming for distributed and parallel processing: Compiling programs for parallel execution Programming for array processors Programming with shared memory Communicating sequential processors and occam. Future computer architectures: Data flow computing The functional approach The connection machine.
Design of a real time image compression system using multiple DSP 56000/96000 processors

An image compression system has been implemented using DSP 56000/96000 family of processors. Block processing is done on image data of 8/spl times/8 size to reduce I/O overheads. The coding scheme uses Discrete Cosine Transform (DCT) followed by a Llyod-Max quantizer. A multiprocessor system using these processors has also been designed for compression of 512/spl times/512 images in real time. <<ETX>>
최상위 모바일 라우터와 중첩 라우터들을 위한 새로운 바인딩을 이용한 경로 최적화 기법

최근 유선 환경이 아닌 무선 환경에서의 인터넷 사용이 증가함에 따라 무선 이동성을 요구하는 사용자수가 급격히 증가하고 있다. 또한 단말의 크기가 점차 작아졌지만 능력이 증가함에 따라 언제 어디서나 인터넷을 사용하고자 하는 요구가 많아지고 있는 실정이다. 이에 따라 이동성을 위한 기술 개발이 중요시되고 있으며 단일 무선 네트워크뿐만 아니라 중첩된 무선 네트워크 환경에서의 연구가 활발히 진행되고 있다. 중첩된 네트워크 환경에서의 고려사항에는 경로 최적화, 멀티호밍, 보안 등의 문제가 있으며 우리는 이 중 경로 최적화에 관한 연구를 전개해 나갈 것이다. 지금까지 중첩네트워크 환경에서의 경로 최적화 휴리스틱들이 많이 연구되어왔으며, 이 중 몇 가지 경로 최적화 기법의 문제점을 살펴보고 보완하는 새로운 기법을 소개하고자 한다. 또한 성능평가를 통해 다른 휴리스틱보다 더욱 훌륭한 최적화기법임을 보이고자 한다.
Trimming Tools in Exploratory Data Analysis

Exploratory graphical tools based on trimming are proposed for detecting main clusters in a given dataset. The trimming is obtained by resorting to trimmed k-means methodology. The analysis always reduces to the examination of real valued curves, even in the multivariate case. As the technique is based on a robust clustering criterium, it is able to handle the presence of different kinds of outliers. An algorithm is proposed to carry out this (computer intensive) method. As with classical k-means, the method is specially oriented to mixtures of spherical distributions. A possible generalization is outlined to overcome this drawback.
Interdependence and sensitivity of motor parameters in torque estimation algorithms

This paper studies a torque estimation model for induction machines. The model requires different machine parameters as input. Since the input parameters are deduced from measurements burdened with inaccuracy, it is necessary to take into account uncertainty in the input of the model. On that account the distribution and the interdependence of the input parameters is determined. A sufficient data input set is obtained by a sampling method. Uncertainty propagation in the model is analyzed and the desired information from the set of output data is extracted.
Implementation and evaluation of a new methane model within a dynamic global vegetation model: LPJ-WHyMe v1.3.1

Abstract. For the first time, a model that simulates methane emissions from northern peatlands is incorporated directly into a dynamic global vegetation model. The model, LPJ-WHyMe (LPJ Wetland Hydrology and Methane), was previously modified in order to simulate peatland hydrology, permafrost dynamics and peatland vegetation. LPJ-WHyMe simulates methane emissions using a mechanistic approach, although the use of some empirical relationships and parameters is unavoidable. The model simulates methane production, three pathways of methane transport (diffusion, plant-mediated transport and ebullition) and methane oxidation. A sensitivity test was conducted to identify the most important factors influencing methane emissions, followed by a parameter fitting exercise to find the best combination of parameter values for individual sites and over all sites. A comparison of model results to observations from seven sites resulted in normalised root mean square errors (NRMSE) of 0.40 to 1.15 when using the best site parameter combinations and 0.68 to 1.42 when using the best overall parameter combination.
The Debate on Automated Essay Grading

We look at a controversy: the use of computers for automated and semiautomated grading of exams. K. Kukich, the director of the Natural Language Processing group at Educational Testing Service, provides an insider's view of the history of the field of automated essay grading and describes how ETS is currently using computer programs to supplement human judges in the grading process. T. Landauer, D. Laham, and P. Foltz describe the use of latent semantic analysis in a commercial essay-scoring system called IEA. They also address important ethical questions. L. Hirschman, E. Breck, J. Burger, and L. Ferro report on MITRE's current efforts towards automated grading of short-answer questions and discuss the ramifications for the design of general question answering systems. Finally R. Calfee places these developments in the framework of current educational theory and practice.
On-line scalable image access for medical remote collaborative meetings

The increasing need of remote medical investigation services in the framework of collaborative multidisciplinary meetings (e.g. cancer follow-up) raises the challenge of on-line remote access of (large amount of) radiologic data in a limited period of time. This paper proposes a scalable compression framework of DICOM images providing low-latency display through low speed networks. The developed approach relies on useless information removal from images (i.e. not related with the patient body) and the exploitation of the JPEG2000 standard to achieve progressive quality encoding and access of the data. This mechanism also allows the efficient exploitation of any idle times (corresponding to on-line visual image analysis) to download the remaining data at lossless quality in a way transparent to the user, thus minimizing the perceived latency. The experiments performed in comparison with exchanging uncompressed or JPEGlossless compressed DICOM data, showed the benefit of the proposed approach for collaborative on-line remote diagnosis and follow-up services.
Never-ending language learning

We will never really understand learning until we can build machines that learn many different things, over years, and become better learners over time. We describe our research to build a Never-Ending Language Learner (NELL) that runs 24 hours per day, forever, learning to read the web. Each day NELL extracts (reads) more facts from the web, into its growing knowledge base of beliefs. Each day NELL also learns to read better than the day before. NELL has been running 24 hours/day for over four years now. The result so far is a collection of 70 million interconnected beliefs (e.g., servedWtih(coffee, applePie)), NELL is considering at different levels of confidence, along with millions of learned phrasings, morphological features, and web page structures that NELL uses to extract beliefs from the web. NELL is also learning to reason over its extracted knowledge, and to automatically extend its ontology. Track NELL's progress at http://rtw.ml. cmu.edu, or follow it on Twitter at @CMUNELL.
ET++ - An Object-Oriented Application Framework in C++

ET++ is an object-oriented application framework implemented in C++ for a UNIX† environment and a conventional window system. The architecture of ET++ is based on MacApp and integrates a rich collection of user interface building blocks as well as basic data structures to form a homogeneous and extensible system. The paper describes the graphic model and its underlying abstract window system interface, shows composite objects as a substrate for declarative layout specification of complex dialogs, and presents a model for editable text allowing the integration of arbitrary interaction objects.
Video surveillance and counterterrorism: the application of suspicious activity recognition in visual surveillance systems to counterterrorism

Video surveillance systems have become a key element in efforts by security services, the military and law enforcement to counterterrorism since the attacks of 11 September 2001. Primarily involving closed circuit television, collected using a variety of hardware platforms and software algorithms, systematic imagery analysis has typically been used as a tool for post-event forensics to identify tactics, techniques and perpetrators of terrorist attacks. Advanced video surveillance applied to detecting suspicious behaviours embedded in crowd signatures can also be a powerful tool for pre-event deterrence. In this article, we examine case studies of attempts by terrorists to target civilians and create mass casualty incidents and evaluate existing behaviour detection algorithms with the goal of elucidating links between potential threats indicated by suspicious behaviours and possible deterrent mechanisms based on video surveillance.
University Employment Information Integration Model Based on Cloud Computing

Currently, many universities have set up their own system for providing employment information service, problems that following the independently operating and maintaining modes are: on the one hand, employers have to register a number of university employment information system to obtain information on a number of graduates; on the other hand, graduates also need to browse a number of university employment information site to get more information on business recruitment, which severely reduces the transparency and efficiency of information data queries. To solve the above problems, this paper propose the university employment information integration model on the basis of distributed storage and computing technology, which realizes the integration of multiple heterogeneous employment information database.
A dynamically reconfigurable monolithic CMOS pressure sensor for smart fabric

This paper presents a mixed-signal system-on-chip (SOC) for sensing capacitance variations, enabling the creation of pressure-sensitive fabric. The chip is designed to sit in the corner of a smart fabric such as elastic foam overlaid with a matrix of conductive threads. When pressure is applied to the matrix, an image is created from measuring the differences in capacitance among the rows and columns of fibers patterned on the two opposite sides of the elastic substrate. The SOC approach provides the flexibility to accommodate for different fabric sizes and to perform image enhancement and on-chip data processing. The chip has been designed in a 0.35-/spl mu/m five-metal one-poly CMOS process working up to 40 MHz at 3.3 V of power supply, in a fully reconfigurable arrangement of 128 I/O lines. The core area is 32 mm/sup 2/.
Solution Space Reduction in Task Scheduling for Heterogeneous Computing Systems

Abstract A new approach to address the mapping and scheduling problem in hardware/software codesign is presented. This approach is based on heuristic search and two techniques are proposed to enhance the quality of mapping/scheduling solutions: (1) a task clustering technique to reduce the solution space and (2) a multiple neighbourhood function strategy to better explore the solution space. It is evaluated by case studies involving 2880 randomly generated task graphs, as well as four real applications. Experimental results show that the proposed approach out performs previous approaches in terms of speedup by up to 36.2% for a system with a microprocessor, a digital signal processor, and an FPGA.
Wave-induced steady streaming and net sediment transport in ocean bottom boundary layers

The sediment transport resulting from the interaction between two important streaming-generatingmechanisms has been investigated by numerical simulations of the seabed boundary layer beneath both sinusoidal waves and Stokes second order waves. These two mechanisms are streaming caused by turbulence asymmetry in successive wave half-cycles(beneath asymmetric forcing), and streaming caused by the presence of a vertical wave velocity within the seabed boundary layer.
Fault-tolerant guidance algorithms for Cassini's Saturn orbit insertion burn

This paper describes a strategy which provides maximum assurance that Cassini's Saturn orbit insertion (SOI) will be successful. First, the criticality of the SOI to the mission is shown and how it reduces to an energy only correction. Then, autonomous on-board diagnostic and response algorithms are described that respond to any combination of problems which might be encountered during the burn. An accurate restart algorithm is implemented to complete the energy correction if at all possible.
MPEG-2 decoder implementation on MAP1000A media processor using the C language

Mediaprocessors offer several advantages over hardwired MPEG-2 decoder chips, such as the capability to perform multiple functions, update the algorithms and customize the system with enhanced features. MAP1000A is a highly integrated mediaprocessor platform with multiple processing units for parallel processing. The input bitstream is parsed and decoded by the VLX coprocessor, which is a small and fast processor designed for sequential operations. The decoded information is then passed to the VLIW Core that performs the pixel-intensive operations such as the inverse quantization, inverse DCT, half-pel interpolation, pixel averaging, and pixel addition. The VLIW Core's two-cluster architecture with 128-bit data path per cluster and partitioned operations achieves a high throughput on 8-bit and 16-bit pixel operations. Also, to avoid the VLIW Core from waiting for data, a dedicated data transfer engine called Data Streamer moves data between MAP1000A, external memory, and I/O devices in parallel with the VLIW Core's execution. The MPEG-2 video decoder on MAP1000A is written entirely in the C language, which is a significant advantage over previous processors which required assembly-language programming. At 220 MHz clock frequency, the MPEG-2 decoder takes less than 40% of the MAP1000A's cycles. Two MPML streams can be decoded simultaneously in real time, with enough cycles remaining to perform other tasks such as the audio and system decoding.
Studies on quinazolinones. 2. Synthesis of 2-(4-benzylpiperazin-1-ylmethyl)-2,3-dihydro-5H-oxazolo[2,3–6]quinazolin-5-one and -2,3-dihydro-5H-thiazolo[2,3-b]quinazolin-5-one†

To search for novel antihypertensive heterocycles in the condensed quinazoline series, two representative compounds were synthesized via a suitable reaction sequences. Treating anthranilonitrile with allyl isocyanate gave 2-(allylureido)benzonitrile (10) in a quantitative yield. Compound 10 was cyclized to 3-allylquinazoline-2(1H, 4(3H)-dione (11). Bromination of 11 in carbon tetrachloride converted it into the corresponding 3-(2,3-dibromopropyl) derivative (12) in 92% yield. Ring closure of 12 was effected by the action of alkali to afford 2-bromomethyl-2,3-dihydro-5H-oxazolo[2,3-b]quinazolin-5-one (13). The title compound, 2-(4-benzylpiperazin-1-ylmethyl)-2,3-dihydro-5H-oxazolo[2,3-b]quinazolin-5-one (7) could be obtained by a reaction of either 12 or 13 with 1-benzylpiperazine respectively. Starting from the readily available 3-allyl-2H-thioxoquinazolin-4(3H)-one (16) via the analogous reactions gave the 2-bromomethyl-2,3-dihydro-5H-thiazolo[2,3-b]-quinazolin-5-one (19) in good yield. However, the reaction of 19 with 1-benzylpiperazine provided another target compound, 2-(4-benzylpiperazin-1-ylmethyl)-2,3-dihydro-5H-thiazolo[2,3-b]quinazolin-5-one (8) only in poor yield (8%). As major product, the dehydrobrominated compound, 2-methylene-2,3-dihydro-5H-thiazolo[2,3-b]quinazolin-5-one (22) was isolated. A preliminary pharmacological evaluation revealed that both compounds 7 and 8 are devoid of the antihypertensive activity.
Adaptive and diversity arrays for frequency-hopping systems

The performance of an adaptive array is compared with that of an ideal diversity array for frequency-hopping systems in a mobile peer-to-peer communication network. Both independent and completely correlated Rayleigh fading at the antennas are examined. The adaptive array uses the maximin algorithm, while the diversity array uses predetection equal-gain combining with perfect cophasing. Multiple-access interference is simulated for a representative environment. It is found that the adaptive array does not provide as good a performance as the ideal diversity array. However, the compactness and the capability of the adaptive array to null strong interference or jamming may make it preferable in many mobile communication networks.
On meteorological droughts in tropical Pacific Islands: time‐series analysis of observed rainfall using Fiji as a case study

Analysis of historical droughts was undertaken by converting observed monthly rainfall over the period 1949–2008 to the Standardized Precipitation Index (SPI). The modified Mann–Kendall test applied on monthly rainfall showed statistically significant downward trends at significance level α = 0.01. The Sen's Slope, estimated from the time‐series, revealed statistically significant decreases in annual rainfall ranging from ∼13 to 47 mm year−1. Based on the SPI, drought duration and severity was non‐uniform across stations over the 60 year period. The strongest impacted stations were located in western and northern Fiji where rainfall deficiency for the period 1969–1988 led to a dramatic increase in moderate and severe droughts. The return periods of annual rainfall were much longer at these stations relative to those in outer‐lying islands. While rainfall increased over the period 1989–2008, the actual amounts did not exceed 1949–1968 totals, confirming a net shift towards drier conditions since the 1950s. This study has demonstrated that SPI can be a useful tool for diagnosis and monitoring meteorological droughts in tropical Pacific islands. Copyright © 2010 Royal Meteorological Society
Using collocations for language generation 1

A large number of wording choices naturally occurring in English sentences cannot be accounted for on semantic or syntactic grounds. They represent arbitrary word usages and are termed collocations. In this paper, we show how collocations can enhance the task of lexical selection in language generation. Previous language generation systems were not able to account for collocations for two reasons: they did not have the lexical information in compiled form and the lexicon formalisms available were not able to handle the variations in collocational knowledge. We describe an implemented generator, Cook, which uses a wide range of collocations to produce sentences in the stock market domain. Cook uses a flexible lexicon containing a range of collocations, from idiomatic phrases to word pairs that were compiled automatically from text corpora using a lexicographic tool, Xtract. We show how Cook is able to merge collocations of various types to produce a wide variety of sentences.