Miracle-dz/UniFAR-FTUs huggingface dataset:
Characteristics of axisymmetric viscous incompressible flow passing a torus rotating about its centerline

The present numerically investigates the axisymmetric flow past a rotating torus in a viscous incompressible fluid. The surface of the torus rotates with constant velocity around its centerline. A numerical model has been developed for the governing equation in the toroidal coordinate system. The rotating boundary of a torus generates inertia in the surrounding fluid. There are two interesting regimes. In one of them, a rotation of torus surface generates a toroidal fluid region which envelopes the torus. In another one a rotation of torus surface generates the jet of fluid expelled from the hole downward. We focus on the hydrodynamics of a torus effected by a rotational rate () and the aspect ratios (Ar). The numerical simulations are performed for three aspect ratios, Ar = 2, 3 and 5, where Ar is defined as ratio of torus radius (b) to cross-section radius of torus (a) and the range of rotational rate 4.0 2.0,     where  is defined as ratio of tangential tank-treading motion of torus surface to the uniform far-field velocity.
Second-and third-line chemotherapy in patients with metastatic pancreatic adenocarcinoma : Feasibility and potential benefits in a retrospective series of 117 patients Deuxième et troisième lignes de chimiothérapie chez des patients ayant un adénocarcinome du pancréas métastatique : faisabilité et b

Background. — Chemotherapy is effective in metastatic pancreatic adenocarcinoma (PAC), but the benefits of secondand third-line chemotherapy remain unclear. Methods. — We studied all patients followed consecutively for metastatic PAC, and registered at our institution between 1997 and 2006. We retrospectively analyzed the following data in terms of chemotherapy: tumor response; time to tumor progression (TTP) for each line; and overall survival (OS). Efficacy of second-line regimens was assessed using the growth modulation index (GMI). Results. — Out of 117 patients, 99 (85%) received at least one line of chemotherapy, 53 (45%) received two lines and 24 (21%) had three or more lines. Median OS was 6.7 months for all 117 patients, 1.8 months for 18 patients who never received chemotherapy, 4.6 months for 46 patients who received one-line chemotherapy and 11.5 months for 53 patients who received
Measured performance of a novel high temperature heat pump with HFO-1336 mzz ( Z ) as the working fluid

Industrial heating consumes a significant fraction of the energy consumed globally. Heating at temperatures higher than about 100°C is predominantly provided through combustion of fossil fuels with uncertain prices and well recognised environmental impacts, including climate change. A significant fraction of industrial input energy is wasted as low temperature heat (e.g. dryer vent gases or cooling water) that could be lifted by high temperature heat pumps (HTHPs) to temperatures meeting nearby heating duties. A novel HTHP with 32 kWth heating capacity is evaluated in this paper. It is based on a reciprocating compressor adapted from a piston expander previously developed for a small-scale organic Rankine cycle system. The expander has been extensively tested at high temperatures and has demonstrated high efficiencies. The compressor was constructed by solely adjusting the expander valve system. HFO-1336mzz(Z) (cis-CF3CH=CHCF3; previously referred to as DR-2), with a global warming potential of 2, was selected as the working fluid. HFO-1336mzz(Z) has attractive safety, environmental and thermodynamic properties and high chemical stability at high temperatures. Heat pump tests demonstrated heating from a 90 °C heat source to 130 °C and 150 °C with a Coefficient of Performance for heating of 4.6 and 2.7, respectively. Work is ongoing to demonstrate higher heating temperatures and optimise performance in support of commercialisation in 2017. The new HTHP with HFO1336mzz(Z) could enable the utilisation of abundantly available low temperature heat to meet heating duties at higher temperatures, with equal or higher energy efficiencies and lower environmental impacts than with incumbent working fluids.
Surrogate Regret Bounds for Equalized Odds

We consider the problem of fairness in machine learning from the perspective of statistical consistency. We focus on the equalized odds criterion, which mandates equality of TPR and FPR for protected groups. The set of feasible equalized odds predictors is defined by the intersection of the AUC regions for all groups. For the simple post-processing procedure from Hardt et al. [6], we obtain a surrogate regret bound for equalized odds classifiers via strongly proper loss functions. Our proof makes use of existing results relating classification regret to AUC regret, as well as surrogate regret bounds for AUC via proper losses.
Ensemble Deep Manifold Similarity Learning Using Hard Proxies

This paper is about learning deep representations of images such that images belonging to the same class have more similar representations than those belonging to different classes. For this goal, prior work typically uses the triplet or N-pair loss, specified in terms of either l2-distances or dot-products between deep features. However, such formulations seem poorly suited to the highly non-Euclidean deep feature space. Our first contribution is in specifying the N-pair loss in terms of manifold similarities between deep features. We introduce a new time- and memory-efficient method for estimating the manifold similarities by using a closed-form convergence solution of the Random Walk algorithm. Our efficiency comes, in part, from following the recent work that randomly partitions the deep feature space, and expresses image distances via representatives of the resulting subspaces, a.k. a. proxies. Our second contribution is aimed at reducing overfitting by estimating hard proxies that are as close to one another as possible, but remain in their respective subspaces. Our evaluation demonstrates that we outperform the state of the art in both image retrieval and clustering on the benchmark CUB-200-2011, Cars196, and Stanford Online Products datasets.
A monitoring procedure for detecting structural breaks in factor copula models

Abstract We propose a new monitoring procedure based on moving sums (MOSUM) for detecting single or multiple structural breaks in factor copula models. The test compares parameter estimates from a rolling window to those from a historical data set and analyzes the behavior under the null hypothesis of no parameter change. The case of multiple breaks is also treated. In the model, the joint copula is given by the copula of random variables which arise from a factor model. This is particularly useful for analyzing high dimensional data. Parameters are estimated with the simulated method of moments (SMM). We analyze the behavior of the monitoring procedure in Monte Carlo simulations and a real data application. We consider an online procedure for predicting the day-ahead Value-at-risk based on the suggested monitoring procedure.
Smartphone Inertial Sensor-based Indoor Localization using Acoustic Signal

In Pedestrian Dead Reckoning (PDR), the following four elements are significantly important namely, absolute positioning, step detection, stride estimation and heading estimation. In this paper, we describe a method for absolute positioning and stride estimation. The proposed method estimates a parameter of the stride model while measuring the absolute position by using Time Division Multiplexing-Phase Accordance Method (TDMPAM) we devised. Based on the result of the experiment, we confirmed that the estimated stride errors were approximately 2%. Keywords—Smartphone, PDR, Acoustic signal, TDoA
Spatial and temporal patterns of foraging activity by breeding Common Scoters (Melanitta nigra) in Scotland

Many populations of sea ducks have declined; poor foraging conditions in freshwater breeding habitats could be a contributory factor. The UK breeding population of Common Scoters (Melanitta nigra) declined by 63% between 1995 and 2007, prompting research which showed that lake use by breeding scoters was correlated with food abundance (large invertebrates) and accessibility (shallow water). Building on this earlier work, here we investigate scoter foraging activity at Scottish breeding lakes, in order to better understand declines and inform conservation measures. We hypothesised that foraging effort would (i) be concentrated in shallow water holding large invertebrates, (ii) differ between sexes, and (iii) vary through the season. We recorded scoter foraging activity during 208 c. one-hour watches, at 13 lakes over three years. Water depth and food abundance (invertebrates) were measured. Foraging was significantly associated with shallow water: areas within 10 m of lake shores, typically less than 0.9 m in depth, had 1.9 and 4.1 times more foraging use than expected by chance, for females and ducklings respectively.
THE RELATIONSHIP OF PERFORMANCE AND PERSONAL FACTORS IN JOB CRAFTING

The purposes of this study focus on two distinct yet related areas: the relationship of reported job crafting behavior to supervisor assessment of individual performance, and the exploration of individual factors that may drive individual interest towards engaging in job crafting behavior. There has been little research completed on job crafting, in general, and virtually no research on the relationship between the concept and job performance.
An Exploration of Non-Quiet Listening at School

The first goal of this study was to describe acoustic properties across an entire day in each of three educational environments: daycare (pre-kindergarten), an elementary school (kindergarten to grade 8), and a high school (grades 9 through 12). Instructional and non-instructional listening situations were included in this description. Second, we classified the various listening situations experienced by the cohorts at each school. Three sites participated in this study. At each site, empty room measurements were obtained, including noise floor and reverberation levels, across the various rooms frequently occupied by the participating cohorts of children. Next, the first author followed the cohorts throughout their regular school routines, recording sound level data with a dosimeter and documenting observations of the types of listening situations encountered by the children. Noise floor, reverberation, and sound levels were compared to classroom standards and large scale classroom studies. The cohorts in this study encountered highly variable acoustic environments throughout the day, for signal levels, noise sources, and reverberation properties. These results have implications for digital signal processing and hearing instrument fitting approaches for school-age children. Furthermore, the results of this exploratory study may impact on future research on classroom acoustics.
Job Stress Management among Secondary School Principals in Rivers State , Nigeria

This article investigated job stress management among secondary school principals in Rivers State. It focused on the nature, sources, influence of stressors on administrative roles and strategies employed in the management of such stressors. Descriptive and a survey design were used for this study. The study’s population comprised Principals, Vice principals and HoDs of 286 public secondary schools in Rivers State. Simple random sampling technique was used to select the respondents for this study and eighty six (86) respondents making thirty percent (30%) of the target population formed the sample for the study. The questionnaire used for data gathering comprised of two parts: ‘A’ and ‘B’. Part ‘A’ addressed demographic information of the respondents while part ‘B’ sought to obtain information on job-related stress that affects educational managers. The instrument was subjected to analysis by specialists in the area of educational management. The test re-test technique of assessing reliability was used. Responses from the first test correlated with those from the second test using Pearson Product moment Coefficient and a value of . 832 was obtained. Descriptive statistics was used for data analysis in this study. The data was presented by use of frequency tables and percentages and analyzed using ‘regression’ to establish the relationship between the variables. The results of the study were discussed in relation to the study objectives with an aim of answering the research questions. The study found that significant positive and negative relationship exists in job stress management among principals in Rivers state. Recommendations were proffered.
vv 1 camping tent food fire Residual BRNN Input Video Visual Encoder ( CNN ) Video Encoder Sentence Encoder Word 2 Vecs Sentence Semantic Embedding vv 2 vv 3 vvNN − 1 vvNN vv Video Semantic Embedding xx

Bridging vision and natural language is a longstanding goal in computer vision and multimedia research. While earlier works focus on generating a single-sentence description for visual content, recent works have studied paragraph generation. In this work, we introduce the problem of video storytelling, which aims at generating coherent and succinct stories for long videos. Video storytelling introduces new challenges, mainly due to the diversity of the story and the length and complexity of the video. We propose novel methods to address the challenges. First, we propose a context-aware framework for multimodal embedding learning, where we design a Residual Bidirectional Recurrent Neural Network to leverage contextual information from past and future. The multimodal embedding is then used to retrieve sentences for video clips. Second, we propose a Narrator model to select clips that are representative of the underlying storyline. The Narrator is formulated as a reinforcement learning agent which is trained by directly optimizing the textual metric of the generated story. We evaluate our method on the Video Story dataset, a new dataset that we have collected to enable the study. We compare our method with multiple state-of-the-art baselines and show that our method achieves better performance, in terms of quantitative measures and user study.
Comparing discourse structures between purely linguistic and situated messages in an annotated corpus

This paper describes a corpus of situated multiparty chats developed for the STAC project (Strategic Conversation, ERC grant n. 269427). and annotated for discourse structure in the style of Segmented Discourse Representation Theory (SDRT; Asher & Lascarides,2003). The STAC corpus is not only a rich source of data on strategic conversation, but also the first corpus that we are aware of that provides discourse structures for multiparty dialogues situated within a virtual environment. The corpus was annotated in two stages: we initially annotated the chat moves only, but later decided to annotate interactions between the chat moves and non-linguistic events from the virtual environment. This two-step procedure has allowed us quantify various ways in which adding information from the nonlinguistic context affects dialogue structure. In this paper, we look at how annotations based only on linguistic information were preserved once the nonlinguistic context was factored in. We explain that while the preservation of relation instances is relatively high when we move from one corpus to the other, there is little preservation of higher order structures that capture ``the main point" of a dialogue and distinguish it from peripheral information.
A Comparison of Lexical Ties in the English Story Books Written by Natives vs . Non-Natives Dr .

Every text type, including written texts as well as spoken texts, needs to possess some degree of go togetherness and coherence. One way to create the text coherence is to use lexical ties which have the capability of relating the parts of a text semantically. In this corpus-based study, the researcher investigated the use of lexical ties in English story books written by a native English speaker as opposed to a non-native English language user. Based on the research goals, the researcher selected two short stories, i.e. Aaron Trow and Amy Foster as the native and non-native corpus of the study, respectively. Then, he used Halliday and Hasan’s (1976) concept of cohesion and taxonomy of cohesive ties for analyzing the samples of lexical ties and compared both short story writers' use of lexical ties through the use of Kruskal Wallis test. The results indicated that except for the use of synonyms, the two short stories were significantly different in repetition, use of general words, super-ordinates, and collocation as elements establishing lexical ties. The research findings of the present study have a number of implications for language instructors and non-native authors.
Household Vulnerability to Poverty in Vanuatu and the Solomon Islands 1

Melanesian countries such as Vanuatu and the Solomon Islands are renowned for their vulnerability to economic and environmental shocks. Equally, analyses of household vulnerability are becoming a mainstay of the development economics literature. Yet little empirical work has been done that examines the extent to which Melanesia’s exposure to risks at a national level affects the vulnerability of households to experiencing poverty. This paper addresses the gap by using cross-sectional data from a survey that was specifically designed to capture information on households’ characteristics, their experience of shocks and their responses to shocks during an extremely cyclical phase in the global economy. Unlike conventional studies of household vulnerability, it calculates households’ probability of experiencing a broad, non-monetary, characterisation of poverty: the multidimensional poverty index, given the inherent limitations on relying solely on monetary metrics of wellbeing in Melanesia. It shows that while poverty and vulnerability are linked, the incidence of vulnerability is typically more widespread than the observed rate of poverty. This confirms the results of vulnerability analyses in other developing country contexts that while poverty is an essential indicator of wellbeing, it provides limited foresight into future poverty. Moreover, around three quarters of the total estimated vulnerability in Vanuatu and the Solomon Islands stems from excess volatility in expected wellbeing, rather than inordinately low levels of wellbeing. Being wealthier (both in a conventional sense and in terms of traditional Melanesian artefacts of wealth), better educated and employed also reduces a household’s vulnerability. This ability to distinguish between different types of vulnerability, as well as understanding the key aspects of households’ resilience, makes such analyses critical for guiding policymakers interested in poverty prevention in Melanesia. 1 This paper is part of a broader research project investigating the vulnerability and resilience of Pacific Island households to the effects of macroeconomic shocks. It is sponsored by the Australian Agency for International Development (AusAID) through an Australian Development Research Award (ADRA)
Effects of Task Complexity and Types of Negotiation on Language-related Episodes in ESL Classrooms

While the use of pedagogical tasks to encourage learner-learner interaction has gained recognition in promoting interlanguage development, the ways in which language forms are dealt with during these interactions remain underexplored. This study addressed the noticing of gaps in language use while dealing with tasks which are reflected by the negotiation of meaning and negotiation of form that occurred. Employing classroom-based research, this study investigated the effects of task reasoning demand and type of negotiation on frequency of language-related episodes (LREs). The grammatical items that learners focused on during their interactions were also identified and tabulated. A repeated-measures design was adopted. The participants were 76 pre-university students randomly assigned into four groups. Data were analysed using descriptive statistics and repeatedmeasures ANOVA. Results indicate that there was a significantly higher number of LREs with negotiation of meaning as opposed to negotiation of form in the task with the high reasoning demand as opposed to the task with the low reasoning demand. The current research also shows that certain grammatical features were problematic for learners across both tasks. The results have implications on the utilization of tasks for L2 learning to optimize focus on meaning and form in learner-learner interaction.
Fundamentals Of Durable Reinforced Concrete

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Dynamic Scalable ECC Scheme and Its Application to Encryption Workflow Design

Traditional Elliptic Curve Cryptosystems work in the way of using a specific public NIST-recommended curve, which makes it easily to be intensively analyzed while difficult to provide an unified platform composed of devices with diverse processors. Based on recent development on designing and verifying cryptographic curves, this paper proposes a dynamic scalable Elliptic Curve Cryptosystem (ECC) which holds a private curve list constructed using Non-NIST recommended curves over smaller finite field. The security by randomly choosing the prime number is estimated and analysis shows that it could bridge the security gap caused by the adoption of these somewhat weak curves. This work demonstrates its application as the design of a data encryption workflow.
Medical Students ’ Knowledge of Smoking and Cessation Interventions at King Abdulaziz University

The purpose of this study was to assess medical students’ knowledge of smoking and cessation interventions as well as their preparedness to counsel patients. This was a cross-sectional survey conducted between October 2012 and May 2013 among sixth year medical students at King Abdulaziz University, Jeddah. We administered a self-filled questionnaire that comprised 59 questions that assessed students’ characteristics and smoking status, their knowledge of smoking epidemiology, benefits of smoking cessation, smoking risks, and cessation interventions. Data were analyzed using the Statistical Package for the Social Sciences. We recruited 238 students; 22 (9%) were current smokers. Although most students reported being prepared to help their future patients quit, their knowledge of smoking epidemiology in Saudi Arabia was below average with mean score (SD) of 45.8 (16.3). Similarly, students had poor understanding of cessation interventions with mean score (SD) of 29.42 (17.94). Male and female students had a similar level of knowledge of the risks of smoking (p=0.409) and pregnancy related hazards (p=0.071), but females were more knowledgeable about the risks of second hand smoking (p=0.009). Smokers and former smokers were less knowledgeable than never smokers about smoking risks (p=0.015). Final year students at King Abdulaziz University have a poor knowledge of the health consequences of tobacco and the current available cessation methods, suggesting that they need further information on smoking and training in cessation techniques.