Miracle-dz/UniFAR-FTUs huggingface dataset:
A Beat-to-Beat Atrial Fibrillation Detecting System

Atrial Fibrillation (AFib) is the most common cardiac arrhythmia, increasing in prevalence with age. AFib is often associated with structural heart disease and a substantial proportion of AFib patients lead to the significant morbidity, mortality, and cost. Thus, AFib is the most prevalent and costly health problems in the world and a major global healthcare challenge. This study presents a beat-to-beat AFib detection system to provide a healthcare system for AFib patients. For real-time Electrocardiogram (ECG) signals, the beat-to-beat AFib detection system consists of two methods in this study: an improved ECG R peak detection method and a beat-to-beat Gaussian voting AFib method. The improved R peak detection method proposes two different optimization algorithms to replace the knowledge-based theory in previous R peak detection method that consists of three stages: band-pass filter, interesting blocks and threshold. The beat-to-beat Gaussian voting AFib method extracts features based on the R-R intervals to identify the possibility of AFib. Based the R-R intervals, the heart rate can be estimated, and the system can detect the tachycardia and bradycardia in addition. The results using the MIT-BIH database show that the proposed R peak detection method can detect beats with 99.9984% accuracy in testing data. Clinical testing reveals that the proposed beat-to-beat Gaussian voting AFib method is about 94.72% accurate and 98.11% sensitivity for 6 normal subjects and 6 AFib patients.
Diets of Barn Owls Differ in the Same Agricultural Region

Abstract We studied the diet of 20 Barn Owl (Tyto alba) pairs breeding in three habitats (alfalfa fields, date plantations, and villages) in the same agricultural region in the Jordan Valley, Israel. Small mammals, particularly three rodents (Levant voles [Microtus socialis guentheri], house mouse [Mus sp.], and Tristram's jird [Meriones tristrami tristrami]), comprised 73 to 88% of the 3,544 prey items taken by Barn Owls in the three habitats. Frequencies in number and biomass of the rodent species differed among habitats. The number of bird species, their frequencies, and biomass in the diet were higher in villages than in the other two habitats, and were related to the higher diversity of birds breeding in villages. The frequency of birds in the diet was negatively correlated with distance from the village to open fields. Differences in the diet of Barn Owls among the three habitats most likely reflected differences in the distribution and abundance of the prey items in each habitat.
Self-Organized Ge Nanospherical Gate/SiO2/Si0.15Ge0.85–Nanosheet n-FETs Featuring High ON-OFF Drain Current Ratio

We reported experimental fabrication and characterization of Si<sub>0.15</sub>Ge<sub>0.85</sub> n-MOSFETs comprising a gate-stacking heterostructure of Ge-nanospherical gate/SiO<sub>2</sub>/Si<sub>0.15</sub>Ge<sub>0.85</sub>-nanosheet on SOI (100) substrate in a self-organization approach. This unique gate-stacking heterostructure is simultaneously produced in a single oxidation step as a consequence of an exquisitely controlled dynamic balance between the concentrations of oxygen, Si, and Ge interstitials at 900 °C. Process-controlled tunability of nanospherical gate of 60–100 nm in diameter, gate oxide thickness of 3 nm, and Si<sub>0.15</sub>Ge<sub>0.85</sub> nanosheet with compressive strain of −2.5% was achieved. Superior gate modulation is evidenced by subthreshold slope of 150 mV/dec and <inline-formula> <tex-math notation="LaTeX">${I} _{\mathrm{ ON}}/{I} _{\mathrm{ OFF}}>5\times 10^{8}$ </tex-math></inline-formula> (<inline-formula> <tex-math notation="LaTeX">${I} _{\mathrm{ OFF}}< 10^{-6}~\mu \text{A}/\mu \text{m}$ </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">${I} _{\mathrm{ ON}}>500~\mu \text{A}/\mu \text{m}$ </tex-math></inline-formula>) measured at <inline-formula> <tex-math notation="LaTeX">$V_{G}= +1V$ </tex-math></inline-formula>, <inline-formula> <tex-math notation="LaTeX">$V_{D} = +1$ </tex-math></inline-formula> V, and <inline-formula> <tex-math notation="LaTeX">$T = 80$ </tex-math></inline-formula> K for our device with channel length of 75 nm.
An Exploration of EFL Teachers' Teaching Styles and Emotions

The present study aims at delving into English as foreign language (EFL) teachers' preferred teaching style and the emotions that they experienced in their classes. For this purpose, Grasha's Teaching Style Inventory (TSI) and Emotions Questionnaire for Teachers (EQT) were used to investigate teaching style preferences and teachers' experienced emotions. In so doing, 200 EFL teachers from both public high schools and private language institutes of Iran took part in this study. Concerning teaching style preferences, facilitator and delegator styles were the two most frequent styles endorsed by EFL teachers and regarding emotion, enjoyment was the most and anger was the least dominant emotions EFL teachers experienced in their classes. In addition, the findings showed significant correlations between teachers’ teaching styles and their emotions. The findings of the present study may provide information to be taken into consideration by policy makers, language-planners, curriculum designers, language instructors, as well as teachers.
Height-diameter models for maritime pine in Portugal: a comparison of basic, generalized and mixed-effects models

Abstract: Tree height is a key variable in forest monitoring studies and for forest management. However, tree height measurement is time consuming, and the recommended procedure is to use estimates from height-diameter models. Here, we compare height-diameter model forms and approaches for predicting tree height (h) as a function of tree diameter at breast height (d) and additional stand level covariates. Four model forms were evaluated: (i) basic models (which only used d as predictor variable); (ii) generalized models (which used d and stand-level predictor variables); (iii) a mixed-effects model based on the best basic model; and (iv) a mixed-effects model based on the best generalized model. Several alternatives aimed at minimizing height measurement effort were tested in terms of accuracy and applicability. From a practical point of view, the selected generalized model is recommended for estimating the height of maritime pine in Portugal. The results also show that a calibrated basic mixed model provides more accurate results than a basic model locally fitted when the number of h-d observations is limited.
Abundance of Northwest Atlantic grey seals in Canadian waters

Northwest Atlantic grey seals form a single stock, but for management purposes are often considered as 2 groups. The largest group whelps on Sable Island, 290 km east of Halifax, Nova Scotia. The second group referred to as ‘non-Sable Island’ or ‘Gulf’ animals whelps primarily on the pack ice in the southern Gulf of St. Lawrence, with other smaller groups pupping on small islands in the southern Gulf and along the eastern shore of Nova Scotia. Estimates of pup production in this latter group have been determined using mark-recapture and aerial survey techniques. The most recent visual aerial surveys flown during January-February 1996, 1997 and 2000 in the southern Gulf of St Lawrence and along the Eastern Shore resulted in pup production estimates of 11,100 (SE = 1,300), 7,300 (SE = 800) and 6,100 (SE = 900) in 1996, 1997 and 2000 respectively after correcting for births and including counts of pups on small islands. Incorporating information on pup production, reproduction rates and removals into a population model indicates that the Gulf component increased from 15,500 (95% CI = 14,600-16,300) animals in 1970 to 62,700 (95% CI = 49,800-67,800) animals by 1996 and then declined to 22,300 (95% CI = 17,200-28,300) animals in 2000. On Sable Island the population has increased from 4,800 (95% CI = 4,700-4,900) animals in 1970 to 212,500 (95% CI = 159,600-276,200) in 2000. The total Northwest Atlantic grey seal population is estimated to number around 234,800 animals in 2000.
Thermaculture on ‘Cabernet Sauvignon’ vineyard increases wine pigments and wine sensory quality

Thermaculture is applied in vineyards for fungus diseases prevention. However, it can also induce plant to thermal stress, modulating the secondary metabolism. Thus, it was determined the role of thermaculture on ‘Cabernet sauvignon’ wine sensory properties and anthocyanin profile by the application on the vineyard. A total of 19 applications from flowering to harvesting were made. After winemaking and aging (12 months), physicochemical analysis, anthocyanin characterization by high performance liquid chromatographic (HPLC-PDA-MS/MS), and sensory descriptive analysis were done. Treatment on grapes has increased 4.5% of total anthocyanins monomers, 29.4% of pyranoanthocyanins, and 29.5% of direct condensation products that were formed in wine. Thermaculture affected the sensory quality of wine since judges have perceived significant differences in visual (tear, red color) and gustatory (woody flavor) attributes. Finally, thermaculture is an innovative technology and a promising tool to increase anthocyanins in ‘Cabernet Sauvignon’ wines.
Employees' perceptions of the factors affecting their decisions to retire

The ageing workforce has created a number of issues, one of which is the increased interest in, and importance of, the retirement of older workers. Governments are encouraging older workers to continue working later in life, and to delay their retirement, to offset the dependence on the support of (the fewer) younger workers. The findings from the quantitative analysis suggest that age has a significant moderating impact on the way employees perceive four traditional retirement factors (intrinsic, health, financial and organisational policies and practices). Similarly, the findings from the quantitative analysis suggest that employees' perceptions of autonomy in relation to when they retire are significantly affected by those four traditional retirement factors, with the factors of 'financial' and 'organisational policies and practices' being the two significant factors.
A COMPARATIVE STUDY: POLITENESS STRATEGIES ON FEMALE CHARACTERS IN BRIDGET JONES’S DIARY AND BROWNIES

Manusia merupakan makhluk sosial dan sebagai makhluk sosial mereka memerlukan kegiatan sosial untuk berkomunikasi dengan orang lain. Namun dalam berkomunikasi, manusia terkadang melakukan tindakan yang mengancam harga diri seseorang, oleh karena itu diperlukan strategi kesopansantunan untuk mengganti rugi tindakan mengancam harga diri tersebut.Budaya dan jenis kelamin yang berbeda juga berpengaruh terhadap cara seseorang mempertahankan harga diri, terutama untuk kaum perempuan.Dengan adanya modernisasi dan mudahnya akses informasi melalui media, perilaku kesopansantunan seseorang akan mengalami perubahan dimana perempuan akan condong menggunakan bald-on-record atau positive politeness strategy. Teori yang digunakan adalah teori strategi kesopansantunan oleh Brown and Levinson (1978) untuk mengklasifikasikan tipe strategi kesopansantunan. Sumber data diambil dari film berbahasa Inggris, Bridget Jones’s Diary,dan film berbahasa Indonesia, Brownies. Makalah ini akan membandingkan penggunaan strategi kesopansantunan pada karakter perempuan dalam film Bridget Jones’s Diary dan Brownies untuk melihat sejauh mana persamaan dan perbedaannya. Hasil dan pembahasan menunjukkan bahwa karakter perempuan dalam film Bridget Jones’s Diary lebih sering menggunakan strategi positive politeness sedangkan karakter perempuan dalam film Brownies lebih sering menggunakan strategi bald-on-record dalam berkomunikasi.
Intraspecific Genetic Differentiation of the Siberian Newt ( Salamandrella keyserlingii , Amphibia, Caudata) and the Cryptic Species S. schrenckii from Southeastern Russia

The nucleotide sequences of the mitochondrial cytochrome b gene in the Siberian newt Salaman- drella keyserlingii Dybowski 1870 from the populations of the Ural Mountains, Magadan oblast, Chukchi Pen- insula, Sakhalin Island, and Primorskii krai are analyzed. It is shown that in most populations studied (except for Primorskii krai), a low geographic variation in morphological characters corresponds to a low level of genetic variation (0.38% in the combined sample from the Magadan, Sakhalin, Chukchi, and Ural populations). Different scenarios for the origin of the genetically and morphologically homogeneous hyperpopulation are dis- cussed, taking into account the obvious lack of genetic exchange between the marginal populations of the range. They involve the rapid formation of the species range in the Holocene, which followed its gradual development in the Pleistocene; unidirectional stabilizing selection within the entire range; the maintenance of variation at a stable level by mixing of the population during the dispersal of the young and, possibly, by group fertilization. The population inhabiting the Primorskii krai, despite minor morphological differences from other populations, is characterized by a high level of mtDNA divergence (9.8-11.6%) and considerable intrapopulation variation (1.86%). In view of the data obtained, it appears feasible to restore for Salamandrella from Primorskii krai the name S. schrenckii (Strauch, 1870), which was a junior synonym for S. keyserlingii. Based on the mtDNA sequences, the times of emergence for S. keyserlingii and S. schrenckii are dated 490 ka and 2.4 Ma, respec- tively. These should be considered two species of different ages which diverged from a common stem approx- imately 14 Ma, rather than a descendant and its ancestor.
European Conference on Information Systems ( ECIS ) 2009 Requirements on IT business value measures for mobile-integrated business processes

Investments in information technology (IT) do not always result in the expected tangible payoffs, and the factors which influence the effect of IT investments on organizational performance are not well understood. Stock market reaction is one approach to appraising IT investments. In this paper we propose a conceptual model describing the factors that impact IT investments based on market reaction findings of major event studies on IT implementation announcements. This preliminary model may serve as a starting point to better understand the complex issue of stock movements related to IT investments.
Origin of X-Ray and Gamma-Ray Emission from the Galactic Central Region

We study a possible connection between different non-thermal emissions from the inner few parsecs of the Galaxy. We analyze the origin of the gamma-ray source 2FGL J1745.6−2858 (or 3FGL J1745.6−2859c) in the Galactic Center (GC) and the diffuse hard X-ray component recently found by the Nuclear Spectroscopic Telescope Array, as well as the radio emission and processes of hydrogen ionization from this area. We assume that a source in the GC injected energetic particles with power-law spectrum into the surrounding medium in the past or continues to inject until now. The energetic particles may be protons, electrons, or a combination of both. These particles diffuse to the surrounding medium and interact with gas, magnetic field, and background photons to produce non-thermal emissions. We study the spectral and spatial features of the hard X-ray emission and gamma-ray emission by the particles from the central source. Our goal is to examine whether the hard X-ray and gamma-ray emissions have a common origin. Our estimations show that, in the case of pure hadronic models, the expected flux of hard X-ray emission is too low. Despite the fact that protons can produce a non-zero contribution in gamma-ray emission, it is unlikely that they and their secondary electrons can make a significant contribution in hard X-ray flux. In the case of pure leptonic models, it is possible to reproduce both X-ray and gamma-ray emissions for both transient and continuous supply models. However, in the case of the continuous supply model, the ionization rate of molecular hydrogen may significantly exceed the observed value.
FROM POINT CLOUDS TO 3D ISOVISTS IN INDOOR ENVIRONMENTS

Abstract. Visibility is a common measure to describe the spatial properties of an environment related to the spatial behaviour. Isovists represent the space that can be seen from one observation point, and they are used to analyse the existence of obstacles affecting or blocking intervisibility in an area. Although point clouds depict the as-built reality in a very detailed and accurate way, literature addressing the analysis of visibility in 3D, and more specifically the usage of point clouds to visibility analysis, is rather limited. In this paper, a methodology to evaluate visibility from point clouds in indoor environments is proposed, resulting in the creation of 3D isovists. Point cloud is firstly discretized in a voxel-based structure and voxels are labelled into ‘exterior’, ‘occupied’, ‘visible’ and ‘occluded’ based on an occupancy followed by a visibility analysis performed from a ray-tracing algorithm. 3D Isovists are created from the boundary of visible voxels from an observer position and considering as input parameters the visual angle, maximum line of sight, and eye gaze direction.
The Impact of Marketing Mix Elements on Customer Loyalty for an Algerian Telecommunication Company

The main aim of this study is to examine the relationship between the marketing mix elements and customer loyalty in Algeria Telecom company and to achieve these aspects we distributed a questionnaire to a random sample of the company’s customers so that we use structural equations modeling depending on the partial least squares approach “PLS” to analyze and test the search model. The study finds that product, process, and promotion have a positive and significant effect on customer loyalty.
A Bayesian Framework for Non-Collapsible Models

Author(s): Masouleh, Sepehr Akhavan; Shahbaba, Babak; Gillen, Daniel L | Abstract: In this paper, we discuss the non-collapsibility concept and propose a new approach based on Dirichlet process mixtures to estimate the conditional effect of covariates in non-collapsible models. Using synthetic data, we evaluate the performance of our proposed method and examine its sensitivity under different settings. We also apply our method to real data on access failure among hemodialysis patients.
Performance-based design of FRP retrofitting of existing RC frames by means of multi-objective optimisation

Safeguard of built heritage often involves seismic retrofitting of reinforced concrete (RC) frame structures. When strength and ductility of columns must be enhanced, an effective technique is given by the use of Fibre-Reinforced Polymer (FRP) in forms of wraps glued to the columns, which are able to improve performance thanks to confinement action. In this paper, an optimisation-based procedure for the design of FRP retrofitting of existing RC frames is described. The design aims at finding the most competitive solution in terms of cost and performance, while satisfying the damage levels imposed by Performance-Based Design for serviceability and ultimate seismic hazard levels. The resulting multi-objective optimisation problem, in which the design variables are represented by the thickness of FRP wraps, is then solved by means of Genetic Algorithms. The application to a realistic case study shows how the analysis of the resulting Pareto Front, i.e., the set of non-dominated solutions, clearly describes the threshold between cost and performance. Furthermore, interesting considerations about the sensitivity of the best solutions to the design variables can be made, improving the assessment of the optimisation results.
Extracting Clinical entities and their assertions from Chinese Electronic Medical Records Based on Machine Learning

With the rapid growth of electronic medical records (EMRs) in China, large amounts of clinical data have been accumulated. However, limited work for extracting information from EMRs in Chinese has been conducted. In this work, using manually annotated dataset of EMRs in Chinese, we investigated the clinical Named Entities Recognition (NER) based on Conditional Random Field (CRF) and further built a Support Vector Machine (SVM) classifier to determine their assertion status and evaluate the contributions of different features for assertion classification. For Chinese clinical NER, our CRF-based classifier achieved the best F-measure of 89.07%, while the SVM-based assertion classifier achieved a maximum F-measure of 94.10%. Our work suggests that machine learning methods are helpful in NER and assertion determination for Chinese medical clinical records.
Study of the Properties of the Porous Silicon Synthesized by Ag Assisted Chemical Etching

Porous Silicon (PSi) is synthesized by Ag assisted electroless etching and characterized by Scanning electron microscopy (SEM). The effect of etching time on the optical reflectivity, optical absorbance of PSi is investigated. Reflectivity measurements showed that 45% reflectivity Si wafers drops from 45% to 10% for 2 hours etching and 6% for 3 hours etching. The decrease in the reflectivity shows that the PSi can be employed as an anti reflecting substrate in optoelectronic devices. The absorbance measurements reveal that the average absorbance of PSi is 0.60 in the wavelength range 300-800 nm after 2 hours etching. From the photoluminescence spectra it was found that PL intensity of PSi is high compared to bare silicon wafer. Static water contact angle measurements were performed to examine the hydrophobic properties of the PSi prepared under different conditions.
Antioxidant activity and concentration of phenols and flavonoids in the whole plant and plant parts of Teucrium chamaerdys L. var. glanduliferum Haussk.

This paper deals with antioxidant activity of phenol and flavonoid contents in twenty different extracts obtained from the whole plant and plant parts of Teucriumchamaedrys L. var. glanduliferum Haussk. Antioxidant activity was determined in vitro using 2,2-diphenyl-1-picrylhydrazyl (DPPH) reagent and expressed as IC50values ranged from 1165.75 to 24.51 µg/ml. Total phenols were determined using Folin-Ciocalteu reagent and their amounts ranged from 15.98 to 208.17 mg/g. The amounts of flavonoids in plant extracts were in range from 16.42 to 110.13 mg/g. Concentrations of phenols in different plant parts compared with concentrations for the whole plant were of uneven value. The highest concentration of flavonoids was in all the leaf extracts, while slightly lower was found in the stem extracts and the lowest in the flowered ones. A significant linear correlation was noticed between the values of the concentration of phenols and antioxidant activity. Parallel to the analysis of T. chamaedrys, Ginkgo biloba and Green tea extracts were analyzed for comparison, and the results indicated that some extracts of T. chamaedrys were equal in activity with Ginkgo or Green tea and some appeared to have greater activity. Based on these results, T. chamaedrys is a potential source of phenols as natural antioxidant substance of high value. Key words: Teucrium chamaedrys L. , wall germander, antioxidant activity, phenols, flavonoids.