LDA-TM : A two-step approach to twitter topic data clustering

The Twitter System is the biggest social network in the world, and everyday millions of tweets are posted and talked about, expressing various views and opinions. A large variety of research activities have been conducted to study how the opinions can be clustered and analyzed, so that some tendencies can be uncovered. Due to the inherent weaknesses of the tweets - very short texts and very informal styles of writing - it is rather hard to make an investigation of tweet data analysis giving results with good performance and accuracy. In this paper, we intend to attack the problem from another aspect - using a two-layer structure to analyze the twitter data: LDA with topic map modelling. The experimental results demonstrate that this approach shows a progress in twitter data analysis. However, more experiments with this method are expected in order to ensure that the accurate analytic results can be maintained.

Facilitators of recovery for step-up and step-down clients of a sub-acute residential mental health service

Relating Innovative 2D Ideas into 3D Garments in Terms of Structure, Using ‘Sculptural Form Giving’ as an Intermediate Step in Creation.

This research focuses on finding a fashion design methodology to reliably translate innovative two-dimensional ideas on paper, via a structural design sculpture, into an intermediate model. The author, both as a fashion designer and a researcher, has witnessed the issues which arise, regarding the loss of some of the initial ideas and distortion during the two-dimensional creative sketch to three-dimensional garment transfer process. Therefore, this research is concerned with fashion designers engaged in transferring a two-dimensional sketch through the method ‘sculptural form giving’. This research method applies the ideal model of conceptual sculpture, in the fashion design process, akin to those used in the disciplines of architecture. These parallel design disciplines share similar processes for realizing design ideas. Moreover, this research investigates and formalizes the processes that utilize the measurable space between the garment and the body, to help transfer garment variation and scale. In summation, this research proposition focuses on helping fashion designers to produce a creative method that helps the designer transfer their imaginative concept through intermediate modeling.

A review of one-step fluorescent cyanoacrylate techniques

A review of recent research in the use of one-step fluorescent cyanoacrylate techniques is presented. Advantages and disadvantages of such techniques in comparison to two-step processes are discussed. Further studies and new experimental data are presented to aid this review: three one-step cyanoacrylate products (Lumicyano, PolyCyano UV and PECA Multiband) containing a fluorescent dye were tested to evaluate their effectiveness in developing latent fingermarks on polyethylene bags by means of a pseudo operational trial. The results were compared to the traditional two-step process of cyanoacrylate fuming followed by staining with ethanol-based basic yellow 40 (BY40). The study was conducted using sequential treatments of an initial fuming cycle, a second cycle and finally BY40 staining. LumicyanoTM and PolyCyano UV performed similarly before BY40 staining, with both providing good contrast and visibility under fluorescence. PECA Multiband, however, did not develop as many fingermarks and proved to be problematic for the fuming cabinet. Subsequent BY40 staining of fingermarks developed by all three one-step processes enabled the visualisation of new fingermarks.

Futuretalk: one small step towards a Chronolinguistics

In the area of linguistics and language teaching, science fiction is useful in very many ways. An obvious way is that it sets up many complex and rich worlds and outlines the sorts of adjustments that language must make in those contexts. It thus draws a strong link between language and context; it shows how the construction of reality is largely a matter of language; and it speculates on where we are linguistically heading. It is a useful mirror on language development. Extrapolating the dialects of the future has been the province of science fiction in the last century. Though few SF writers are professional linguists, their method in general tends to take a holistic view of form, meaning and social context. Characters in science fiction are not individuals but are 'everyman' tokens, and the language they use symbolises the culture they inhabit. Linguistic extrapolation in science fiction thus treats language both as the technology of communication and as an index of social change. In this paper, I argue that predicting the language of the future, though extremely difficult, is possible. I call this new discipline chronolinguistics, and I set out the draft principles and parameters of a chronolinguistics, based on the future languages speculated by John Brunner, Russell Hoban, William Gibson, Greg Bear, Neal Stephenson and Iain M.Banks.

Irrigação em Endodontia

Introdução e objectivos - O número de casos com reincidência de infecções póstratamento endodôntico, resultantes de uma incompleta desinfecção dos canais radiculares ainda é significativo e requer aperfeiçoamento. A complexidade do sistema de canais radiculares constitui o principal obstáculo à instrumentação e desinfecção dos mesmos em toda a sua extensão. A irrigação é um passo chave durante a instrumentação que possibilita a limpeza e desinfecção dos canais radiculares e através da qual, as bactérias, toxinas e os seus bio-produtos são eliminados. Este trabalho tem como objectivo descrever as várias técnicas de irrigação actualmente em uso na prática clínica. Materiais e métodos – Para elaboração deste trabalho de revisão foi efectuada uma pesquisa bibliográfica nos motores de busca: PubMed e Science Direct, utilizando como palavras-chave “endodontic irrigation”, “endodontic irrigants” e “sodium hypochloride”. Foram incluídos artigos desde 1915 a 2016 e a pesquisa foi realizada nos meses de Abril a Junho de 2016. Desenvolvimento - Um irrigante endodôntico deve responder a um conjunto de requisitos, entre os quais a eficácia na desinfecção total e definitiva dos canais radiculares, a eliminação da smear layer, deve ser não-antigénico, não tóxico e não carcinogénico e preservar a função do dente. O irrigante mais utilizado é o hipoclorito de sódio, mas alternativas têm sido amplamente utilizadas, tais como clorexidina, ácido etilenodiaminotetra-acético, e irrigantes combinados, tais como uma mistura de tetraciclina, um ácido e um detergente (MTAD), o Hypoclean® e o QMix®. Conlusão - Embora o NaOCl seja a solução que mais se aproxime do irrigante perfeito, a sua toxicidade representa um risco para o paciente e as suas limitações enquanto desinfectante são factores a considerar. A conjugação do NaOCl com outros irrigantes, bem como a formulação dos irrigantes compostos, tem vindo a melhorar a eficiência dos tratamentos endodônticos. No entanto, justifica-se o permanente investimento científico nesta área para que se reduza para níveis esporádicos os casos de reinfecção.

Comparative performance analysis of drives for induction motors

The asynchronous polyphase induction motor has been the motor of choice in industrial settings for about the past half century because power electronics can be used to control its output behavior. Before that, the dc motor was widely used because of its easy speed and torque controllability. The two main reasons why this might be are its ruggedness and low cost. The induction motor is a rugged machine because it is brushless and has fewer internal parts that need maintenance or replacement. This makes it low cost in comparison to other motors, such as the dc motor. Because of these facts, the induction motor and drive system have been gaining market share in industry and even in alternative applications such as hybrid electric vehicles and electric vehicles. The subject of this thesis is to ascertain various control algorithms’ advantages and disadvantages and give recommendations for their use under certain conditions and in distinct applications. Four drives will be compared as fairly as possible by comparing their parameter sensitivities, dynamic responses, and steady-state errors. Different switching techniques are used to show that the motor drive is separate from the switching scheme; changing the switching scheme produces entirely different responses for each motor drive.

Accurate Step Counting

Starting with an evaluator for a language, an abstract machine for the same language can be mechanically derived using successive program transformations. This has relevance to studying both the space and time properties of programs because these can be estimated by counting transitions of the abstract machine and measuring the size of the additional data structures needed, such as environments and stacks. In this article we use this process to derive a function that accurately counts the number of steps required to evaluate expressions in a simple language.

Customer Support, Motivation to participate and participation in services : a first step.

International audience

Kinetic study of solid phase demineralization by weak acids in one-step enzymatic bio-refinery of shrimp cuticles

We describe a one-step bio-refinery process for shrimp composites by-products. Its originality lies in a simple rapid (6 h) biotechnological cuticle fragmentation process that recovers all major compounds (chitins, peptides and minerals in particular calcium). The process consists of a controlled exogenous enzymatic proteolysis in a food-grade acidic medium allowing chitin purification (solid phase), and recovery of peptides and minerals (liquid phase). At a pH of between 3.5 and 4, protease activity is effective, and peptides are preserved. Solid phase demineralization kinetics were followed for phosphoric, hydrochloric, acetic, formic and citric acids with pKa ranging from 2.1 to 4.76. Formic acid met the initial aim of (i) 99 % of demineralization yield and (ii) 95 % deproteinization yield at a pH close to 3.5 and a molar ratio of 1.5. The proposed one-step process is proven to be efficient. To formalize the necessary elements for the future optimization of the process, two models to predict shell demineralization kinetics were studied, one based on simplified physical considerations and a second empirical one. The first model did not accurately describe the kinetics for times exceeding 30 minutes, the empirical one performed adequately.