Miracle-dz/UniFAR-FTUs huggingface dataset:
Design of Front-End for Recommendation Systems: Towards a Hybrid Architecture

To provide personalized online shopping suggestions, recommendation systems play an increasingly important role in “closing a transaction”. Some leading online movie sales platforms, such as Netflix and Rotten Tomatoes, have exploited content-based recommendation approaches. However, the issue of insufficient information about features in item profiles may lead to less accurate recommendations. In this paper, we propose a recommendation method known as Collective Intelligence Social Tagging (CIST), which combines a content-based recommendation approach with a social tagging function based on crowd-sourcing. We used an online movie sales platform as a use-case of how a CIST approach could increase the accuracy of recommended results and the overall user experience. In order t0 understand the feasibility and satisfaction level for CIST, we conducted fifteen design interviews to first determine user-developer perspectives on CIST, and then collected their overall design input.
Ion heating in the HELIX helicon plasma source

Efficient ion heating in a steady-state helicon plasma source is observed with two external loop antennae just above the ion cyclotron frequency. The ion velocity space distribution is measured by laser induced fluorescence in an argon plasma. The measured bulk ion heating is highly anisotropic (the perpendicular temperature increase is ten times the parallel temperature increase) even though the plasma is moderately collisional. Measurements of the perturbed distribution function with laser induced fluorescence suggest that an electrostatic ion cyclotron wave is launched.
Scanning probe lithography on calixarene towards single-digit nanometer fabrication

Cost effective patterning based on scanning probe nanolithography (SPL) has the potential for electronic and optical nano-device manufacturing and other nanotechnological applications. One of the fundamental advantages of SPL is its capability for patterning and imaging employing the same probe. This is achieved with self-sensing and self-actuating cantilevers, also known as ‘active’ cantilevers. Here we used active cantilevers to demonstrate a novel path towards single digit nanoscale patterning by employing a low energy (<100 eV) electron exposure to thin films of molecular resist. By tuning the electron energies to the lithographically relevant chemical resist transformations, the interaction volumes can be highly localized. This method allows for greater control over spatially confined lithography and enhances sensitivity. We found that at low electron energies, the exposure in ambient conditions required approximately 10 electrons per single calixarene molecule to induce a crosslinking event. The sensitivity was 80-times greater than a classical electron beam exposure at 30 keV. By operating the electro-exposure process in ambient conditions a novel lithographic reaction scheme based on a direct ablation of resist material (positive tone) is presented.
Immigration, Capital Flows and Housing Prices

Research on immigration and real estate has found that immigrants lower house prices in immigrant destination neighborhoods. In this article, we find that this latter result is not globally true. Rather, we show that immigrants can raise neighborhood house prices, at least in the case of the wealthy immigrants that we study. We exploit a surprise suspension and subsequent closure of a popular investor immigration program in Canada to use a difference‐in‐differences methodology comparing wealthy immigrant destination census tracts to nondestination tracts. We find that the unexpected suspension of the program had a negative impact on house prices of 1.7–2.6% in the neighborhoods and market segments most favored by the investor immigrants. This leads to an approximate lower bound on the effect of capital inflows of 5%.
Phylogenetic Evolution and Phylogeography of Tibetan Sheep Based on mtDNA D-Loop Sequences

The molecular and population genetic evidence of the phylogenetic status of the Tibetan sheep ( Ovis aries ) is not well understood, and little is known about this species’ genetic diversity. Phylogenetic relationship and phylogeography of 636 individual Tibetan sheep which were collected from the Qinghai-Tibetan Plateau area in China and were assessed using 642 complete sequences of the mitochondrial DNA D-loop. Reference data were obtained from the six reference breed sequences available in GenBank. Phylogeography analysis showed that all four previously defined haplogroups were found in the 15 Tibetan sheep populations but that only one haplogroup was found in Linzhou sheep. Furthermore, clustering analysis divided the 636 individual Tibetan sheep into at least two clusters. The estimated genetic distance and genetic differen tiation associate with altitude, suggesting geographic and adaptive effects in Tibetan sheep. These results contribute to the knowledge of Tibetan sheep populations and will help inform future conservation programs about the Tibetan sheep native to the Qinghai-Tibetan Plateau in China.
The Effects of Visual Mapping and Science-Related Attitudes on Students’ Problem Solving Skills

The aims of this study were to find out: (1) the effects of visual mapping on students’ problem solving skills, (2) the effects of science-related attitudes on students’ problem solving skills, and (3) the interactions between visual mapping and science-related attitudes on students’ problem solving skills. This study was conducted at MAN 1 Tanjung Pura, with the samples of 141 students of XI-Science Program. This study was a quasi-experimental technique by using a pretest-posttest experimental group with 4x2 factorial design. The technique of data analysis was processed by the Two-Way ANOVA and followed by Duncan’s Multiple Range Test with the aid of SPSS 22.00 on the significance level of 0.05. The results showed that: (1) there were the significant effects of visual mapping on students’ problem solving skills (F=94.214; P=0.000), where the scores of students’ problem solving skills taught by concept mapping (87.74±2.586) were significantly higher than taught by direct instruction (78.84±2.689), (2) there were the significant effects of science-related attitudes on students’ problem solving skills (F=3.397; P=0.031), where the scores of high science-related attitudes on students’ problem solving skills taught by visual mapping (85.68±4.312) were significantly higher than the scores of low science-related attitudes on students’ problem solving skills taught by visual mapping (77.26±3.614), and (3) there were the interactions between visual mapping and science-related attitudes on students’ problem solving skills (F=2.195; P=0.000), where the scores of students’ problem solving skills taught by argument mapping with high science-related attitudes were significantly different than taught by direct instruction with high science-related attitudes (P=0.042<0.05) and low science-related attitudes (P=0.000<0.05). Keywords— visual mapping, science-related attitudes, problem solving skills
Petrology, geochemistry, and petrogenesis of mafic dykes from the Kermanshah Ophiolite in Sahneh-Harsin area of Western Iran

The Kermanshah ophiolite complex is a part of the Mediterranean–Zagros–Oman Tethyan ophiolites, located in the structural–tectonic zone of western Iran in the northern part of the Zagros main thrust. Doleritic sheeted dykes are well exposed within the ophiolite in the south of Sahneh. These dykes contain high MgO, Na2O, low TiO2 (2O5, and K2O contents, and high FeOt/MgO and LILE/HFSE ratios. The geochemical data show that the parent magma of these dykes was an initial melt, tholeiitic subalkaline in nature; with LIL elements-enriched signature. N-MORB-normalized multi-element plots indicate nearly flat patterns for HFSE and enrichment in LILE; patterns of incompatible trace elements demonstrate an island arc affinity for these dykes. The enrichment of the LILE in comparison with HFSE suggests the involvement of a crustal component driven by fluids along the subduction zone. Several geochemical parameters suggest that the dykes of Kermanshah Ophiolite exhibit transitional characteristics between mid-ocean ridge basalt and island-arc tholeiite. High LILE/HFSE ratio negate suggest a mid-ocean ridge setting for these dykes; it is, therefore, proposed that the dykes may have originated in a back-arc basin tectonic setting or supra-subduction zone.
Volatility and Development

Why is GDP growth so much more volatile in poor countries than in rich ones? We identify four possible reasons: (i) poor countries specialize in more volatile sectors; (ii) poor countries specialize in fewer sectors; (iii) poor countries experience more frequent and more severe aggregate shocks (e.g. from macroeconomic policy); and (iv) poor countries' macroeconomic fluctuations are more highly correlated with the shocks of the sectors they specialize in. We show how to decompose volatility into these four sources, quantify their contribution to aggregate volatility, and study how they relate to the stage of development. We document the following regularities. First, as countries develop, their productive structure moves from more volatile to less volatile sectors. Second, the level of specialization declines with development at early stages, and slowly increases at later stages of development. Third, the volatility of country-specific macroeconomic shocks falls with development. Fourth, the covariance between sector-specific and country-specific shocks does not vary systematically with the level of development. We argue that many theories linking volatility and development are not consistent with these findings and suggest new directions for future theoretical work.
Paleogenetics of Northern Iberian from Neolithic to Chalcolithic Time

Dynamics of the Neolithic transition across Europe using ancient DNA datasets have established that Neolithic European populations received a limited amount of admixture from resident hunter-gatherers. However, the genetic diversity of Neolithic and Chalcolithic human populations was shaped predominantly by local processes. In the Iberian Peninsula, the Cantabrian fringe showed different proportions of local hunter- gatherers’ ancestry through time. The objective of this chapter is to analyze the mitochondrial variation of populations from the northern Iberian Peninsula from Neolithic to Chalcolithic time using new data from El Aramo mine (Asturias), in the context of the debate about the origin and dispersion of the Beaker culture in Europe.
Oxidant Production over Antarctic Land and its Export (OPALE) project: An overview of the 2010–2011 summer campaign

[1] This paper summarizes the objectives and setting of the OPALE (Oxidant Production over Antarctic Land and its Export) project during summer 2010/2011 at Dumont d'Urville. The primary goal of the campaign is to characterize the oxidizing environment of the atmospheric boundary layer along the coast of East Antarctica. A summary of the relevant field chemical measurements is presented including the carbon monoxide and ammonia records that are used here to identify local influences due to station activities and penguin emissions. An overview of the basic meteorological conditions experienced by the site is presented including the results from the trajectory/dispersion model FLEXPART to highlight which types of air mass were sampled (marine boundary layer versus continental Antarctic air). The results of the FLEXPART analysis demonstrate that high ozone levels and related changes in the OH concentrations are associated with the transport of continental air to DDU. Finally, three companion papers are introduced. A first paper is dedicated to the impact of local penguin emissions on the atmospheric budget of several oxygenated volatile organic compounds. The second paper reports on HONO levels that were measured for the first time in Antarctica by using the long path absorption photometer (LOPAP) technique. Finally, in a third paper, major findings on the HOx levels are detailed, leading to the overall conclusion that the photochemistry at coastal East Antarctica is strongly driven by an efficient HOx chemistry compared to the situation at other coastal Antarctic regions.
Spatial and Temporal Variability of Sea Surface Temperature in Eastern Marginal Seas of China

Spatial mean value evolution, long-term mean pattern, and seasonal as well as interannual variability of sea surface temperature (SST) in Eastern Marginal Seas of China (EMSC) are reanalyzed based on thirty years’ NOAA optimum interpolation (OI) 1/4 degrees’ daily SST data. Temporal evolution of the spatial mean value shows a very marked annual cycle and a weak warming tendency (0.03437°C/year). Spatial distribution of the long-term mean value shows some more fine spatial structure of SST compared to previous studies. Over 90% of the temporal variability can be explained by the annual harmonic whose amplitude is one order larger than that of the semiannual harmonic. In addition, the annual harmonic amplitude distribution is consistent with that of the value of standard deviation. In order to investigate the interannual variation of SST, the EMSC SST interannual index was constructed. Based on wavelet analysis, a significant peak around 3.3 years was found in the EMSC SST interannual index. Further analysis demonstrated that the interannual variability of SST is linked with El Nino-Southern Oscillation (ENSO) teleconnection, through which anomalous surface heat flux warms or cools the EMSC during El Nino or La Nina events.
Relevance of Tags to Images: A Brief Survey of Major Parameters and Evaluation Measures

An exciting way of finding or searching for images is by using tags. Tags are user given words to an image. These tags serve the purpose of metadata. The freedom of giving tags in any form raises questions that whether tags are relevant to image or not. The correct tag assignment will facilitate in search and navigation not only for the users that have contributed the image but also for other users interested in same. In contrast irrelevant tags contribute to semantic noise. In this paper we give brief survey of the major parameters in the literature that are used for estimation of relevance of tags with images along with evaluation measures. (Jabeen F, Khusro S, Mehfooz S, Rauf A. Relevance of Tags to Images: A Brief Survey of Major Parameters and Evaluation Measures. Life Sci J 2013;10(12s):401-404) (ISSN:1097-8135). http://www.lifesciencesite. com. 68
MULHER E A DESCOBERTA DO CÂNCER DE MAMA: TRILHANDO CAMINHOS NO SISTEMA ÚNICO DE SAÚDE

Objetivo: compreender como mulheres detectaram o câncer de mama, desvelando o tempo entre o diagnostico e inicio do tratamento. Metodo: estudo do tipo exploratorio, descritivo, com abordagem qualitativa, com dez mulheres mastectomizadas. A coleta de dados realizou-se por meio de entrevistas com roteiro, contendo questoes semiestruturadas. Para analise dos dados utilizou-se a analise de conteudo. Resultados: sete participantes detectaram alteracoes na mama por meio do autoexame, levando-as a investigacao diagnostica. Quatro entrevistadas iniciaram o tratamento em ate 60 dias e as outras seis extrapolaram o tempo preconizado, portanto, o tempo entre diagnostico e inicio do tratamento variou de dois a oito meses. Conclusao: salienta-se a necessidade de maiores investimentos no setor saude, fortalecendo acoes para rastreamento, deteccao precoce do câncer de mama e inicio do tratamento no prazo de 60 dias, contribuindo para reduzir a mortalidade e os riscos de morbidade ocasionados pelos tratamentos, interferindo tambem no emocional das mulheres.
A simple technique for continuous measurement of time‐variable gas transfer in surface waters

Mass balance models of dissolved gases in streams, lakes, and rivers serve as the basis for estimating whole‐ecosystem rates for various biogeochemical processes. Rates of gas exchange between water and the atmosphere are important and error‐prone components of these models. Here we present a simple and efficient modification of the SF6 gas tracer approach that can be used concurrently while collecting other dissolved gas samples for dissolved gas mass balance studies in streams. It consists of continuously metering SF6‐saturated water directly into the stream at a low rate of flow. This approach has advantages over pulse injection of aqueous solutions or bubbling large amounts of SF6 into the stream. By adding the SF6 as a saturated solution, we minimize the possibility that other dissolved gas measurements are affected by sparging and/or bubble injecta. Because the SF6 is added continuously we have a record of changing gas transfer velocity (GTV) that is contemporaneous with the sampling of other nonconservative ambient dissolved gases. Over a single diel period, a 30% variation in GTV was observed in a second‐order stream (Sugar Creek, Indiana, USA). The changing GTV could be attributed in part to changes in temperature and windspeed that occurred on hourly to diel timescales.
Memantine decreases apoptosis and attenuates the activation of caspase-3 and MDA release in rats with ischemia-reperfusion injury

To investigate the effects of memantine on neuron apoptosis and the expression of Caspase-3 and malonaldehyde (MDA) during cerebral ischemia-reperfusion injury in rat. 135 male Wistar rats were randomly divided into 3 groups: sham operation group, cerebral ischemia-reperfusion model group and memantine intervention group. The changes of cell morphology and the expression of caspase-3 in cerebral cortex neurons at 12h, 24h, and 48h after ischemia-reperfusion were observed by Haematoxylin Eosin (HE) and immunohistochemistry staining respectively. The expression of caspase-3 activity and MDA levels at different time points were detected by spectrophotometer. Meanwhile, the apoptosis in situ in the CA1 region of hippocampus of the rats were investigated with TdT-mediated dUTP nicked labeling (TUNEL) method. Results show that in memantine intervention group, the expression levels of caspase-3 and MDA in ischemia-reperfusion injury region increased, in comparison with sham-operated group (p=0.00), while lower than that of cerebral ischemia-reperfusion model group (p =0.00). Caspase-3 activity remarkably increased in ischemia-reperfusion brain in rats in a time-depended manner. The number of TUNEL positive cells in the CA1 region of hippocampus in the memantine treated rats (7.00±2.04) and model rats (11.57±2.64) were significantly increased compared with the sham operation controls (1.57±4.72) (p =0.00), while the number of TUNEL positive cells in the memantine treated rats decreased as compared with that of the model rats (p =0.00). Suggesting that mamantine may probably have the function of neuroprotection in rats with cerebral ischemia-reperfusion injury by suppressing the expression of caspase-3 activity and MDA and inhibiting the apoptosis of pyramidal neurons in the CA1 region of hippocampus in ischemia-reperfusion rats. [Sun Shilei, Zhao Yanpo, Xu Haowen, Qin Jie. Memantine decreases apoptosis and attenuates the activation of caspase-3 and MDA release in rats with ischemia-reperfusion injury. Life Science Journal. 2011;8(2):281-285] (ISSN:1097-8135). http://www.lifesciencesite. com.
Experimental platform for waveform optimization in passive UHF RFID systems

The article presents an experimental platform, so called “RFID Waveformer,” dedicated to the study of waveform optimization in the radio frequency identification (RFID) context. It is a flexible solution that enables waveform design and their energetic performance evaluation in a ultra high frequency (UHF) RFID link following the ISO‐18000 GEN2 standard protocol. It consists of a reader emulated by a LabVIEW interface controlling radiofrequency laboratory instruments, which perform real time tag response detection. Its interconnection with MATLAB routines enables the design and the evaluation of arbitrarily shaped RFID waveforms. In this article, for illustration, three waveforms are tested with RFID Waveformer in a complex propagation environment: pulsed wave (PW) and time reversal (TR) modes compared to the traditional continuous wave (CW) mode. Experimental results show that both PW and TR modes improve the energetic efficiency of the forward link and so the RFID read range compared to CW mode. Furthermore, TR presents the optimal efficiency in complex propagation medium. The RFID Waveformer enables tag response detection in the three modes offering ease of use and repeatability of measurements. The RFID Waveformer being not limited to the scenario considered in this article, it is a versatile solution extendable to other contexts.
Challenges of extraordinary experiences in the Arctic.

This paper presents and discusses findings from extraordinary experiences in the Arctic Svalbard. Although extensive consumer research has focused on the positive, sublime, and communal aspects of extraordinary experiences, little emphasis has been placed on the challenging aspects. By focusing on Arctic horse riding, Arctic adventure travel and dog sledding from a practice perspective, this study provides evidence that extraordinary consumption can be marked by challenges because of unrealistic expectations, troubling learning practices and connecting with others, and how one copes with tensions. We discuss how these four main types of challenges mark consumption and as such provide a nuanced interpretation compared with the positive connotations of previous research. Copyright © 2015 John Wiley & Sons, Ltd.
Financial investment constraints. A panel threshold application to German firm level data

This article tests the hypothesis that financial supply-side shifts help to explain the low-investment climate of private firms in Germany. The core contention is that a firm's financial position contributes to its access to external finance on credit markets. Special emphasis is put on small and medium-sized firms as these are assumed to face more restrictive access to external sources of funds. The application of a non-linear panel threshold model allows us to group firms endogenously according to their financial position. As potential threshold variables nine different balance sheet indicators are used. The results reveal a positive relationship between cash flows and fixed capital accumulation. Additional nonlinearity suggests that financially fragile firms rely more heavily on retained earnings. In contrast to frequent assumptions, firm size does not seem to be a relevant grouping variable in general with the only exception being micro firms for which the probability to fall into a financially constrained regime is higher compared to other companies.
Geography of Multinational Corporations and Functional Specialization in Chinese Cities

There has been a transformation of urban structure from mainly sectoral to functional specialization. This transformation is inextricably interrelated with changes in firms' organization. Some cities host upstream functions of the value chain while others attract production and assembly. This paper investigates the tendency toward functional specialization in Chinese cities by exploring divisions in multinational corporations' (MNC) business operations in China. Based on data from Fortune Global 500 MNCs during 1979-2008, the study finds that MNCs have gradually expanded in China, both functionally and geographically. In that process, similar functions tend to agglomerate in certain cities while complementary functions co-agglomerate in others. The analysis indicates that Chinese cities may start to move toward functional specialization, with upstream functions clustering in the top tier cities of the political and economic urban hierarchy.