Miracle-dz/UniFAR-FTUs huggingface dataset:
Customer churn analysis in telecommunication sector

Data mining is used to analyze mass databases for having meaningful output. One of the most common applications of the data mining, which is called as Churn Analysis is used to predict behavior of customers who are most likely to change provided service, and to create special marketing tools for them. The aim of this paper is to determine customers who want to churn, and to create specific campaigns to them by using a customer data of a major telecommunication firm in Turkey. To determine the reasons of the customer churn, logistic regression and decision trees analysis, which is one of the classification techniques, are applied.
Sapindus Mukorossi Fruits Gum as Sustained Release Carrier: Optimization of Gastroretentive Drug Delivery System using Simplex Lattice Design

Background: Main focus of this research is to demonstrate the potential use of Sapindus mukorossi fruits gum in the development of drug delivery systems. Therefore, in this effort, gastroretentive tables of famotidine were prepared using simplex lattice design considering the concentration of okra gum, locust bean gum, and S. mukorossi fruits gum as independent variables. A response surface plot and multiple regression equations were used to estimate the result of independent variables on hardness, flag time, floating time, and drug release for 1 h, 2 h, and 8 h and for 24 h. A checkpoint batch was also ready by considering the constraints and desirability of optimized formulation to upgrade its in vitro performance. The significance of result was analyzed using analysis of variance and P < 0.05 was considered statistically significant. Results: Formulation mainly contains S. mukorossi. Fruits gum found to be satisfactory for hardness and floatability, but the combined effect of three variables was responsible for the sustained release of drug. The in vitro drug release data of checkpoint batch (F8) was found to be sustained well compared to the maximum suitable formulation (F6) of 7 runs. The “n” value was found to be between 0.5 and 1 telling that release of drug follows anomalous (non-Fickian) diffusion mechanism indicating both diffusion and erosion mechanism from these natural gums. Predicted consequences were nearly similar to the observed investigational values representing the correctness of the design. Conclusions: Research showed S. mukorossi fruits gum (eco-friendly natural gums) can be considered as capable SR polymers.
N I ] 2 8 M ar 2 01 8 A Hybrid Approach for Efficient Wireless Information and Power Transfer in Green CRAN

In this paper, we consider a green cloud radio access network (C-RAN) with simultaneous wireless and power transfer ability. In order to reduce the energy consumed for updating the channel state information (CSI), energy users are divided into two different groups, including the free charge group and the MIMO group. Then a semi-definite programming problem is formulated under the constraints of energy and information transmission requirements. To minimize the total energy consumption, two algorithms are developed to authorize the energy users into two group divisions in single time slot. Then the algorithms are extended to long term scenarios consisting training and long term stages, the CSI of free charge energy users are not required during the long term stage. Simulation and numerical results are presented to demonstrate the efficiency of the proposed algorithms in significantly reducing the energy consumption of C-RAN systems.
Art and Migraine: Researching the Relationship Between Artmaking and Pain Experience

This research project extends a previous study (Vick & Sexton-Radek, 1999) in examining the relationship between artmaking and pain among 127 migraine sufferers. A basic overview of migraine symptoms and treatment is presented along with a discussion of concepts relating to "migraine art" in order to provide a context for this project. Surveys dealing with headache history, pain experience, and artmaking practices were mailed to 371 participants in a national migraine art competition; both quantitative and qualitative data were analyzed. Participants reported that artmaking was more likely to trigger headaches than to alleviate them and that both the quantity and quality of studio work declined during headache episodes. In addition, participants identified numerous art materials and practices that they felt precipitated migraines and noted avoidance strategies they used to manage their headaches. The implications of these counterintuitive findings for art therapy practice are discussed.
A Systematic Examination of Inter-App Conflicts Detections in Open IoT Systems

Recent several years have witnessed the rapid development of open platforms for developing and deploying Internet of Things (IoT) apps. One of the important issues in such environments is the unintended interactions among independently developed apps installed in a single environment. Although there have been some recent studies trying to address the issue, the treatments to the problem remain preliminary, reﬂected by the rudimentary deﬁnitions of inter-app conﬂicts and the entailed inadequacy of the previously proposed solutions. This paper strives to provide a deeper and more systematic investigation to the problem. It offers a series of new deﬁnitions and categorizations to more precisely characterize the nature of IoT inter-app conﬂicts, and proposes a new representation named IA Nets for representing IoT controls and inter-app interplays. It then describes an efﬁcient conﬂicts detection algorithm developed upon these new deﬁnitions and representations. It further presents DIAmond, a compiler and run-time framework that integrates all the proposed techniques together into a comprehensive solu-tion. Experiments on SmartThings apps validate its effectiveness for IoT inter-app conﬂicts detections.
Informal Support Networks in a Changing Society - are Family-Based Networks Being 'Crowded out'?

Using data from two nationally representative surveys (Estonian Living Conditions survey 1994, n=4,455; Estonian Social Survey 2004, n=8,906), we assess whether informal support networks have changed during the ten year period in Estonia. We hypothesize that during this period due to the establishment of a new welfare system and an overall increase in living standards, on one hand, and diversification of family forms and increased geographic mobility of the population on the other, family support networks have lost their functionality. Our findings show that informal support has decreased between relatives, while mutual helping activities with non-relatives – neighbours, colleagues and friends – have remained almost at the same level. We suggest that the developments in the Estonian society are ‘crowding out’ the instrumental support exchange in the kinship system and empowering social networking with nonrelatives.
Aplicando Programação Genética na Geração de Classificadores de Sentimento

A WEB é comumente utilizada como plataforma para debates, opiniões, avaliações e etc. Esses dados permitiram que algumas áreas, como a Análise de Sentimento (AS), se desenvolvessem para extrair informação e conhecimento que possam ser utilizados em diferentes aplicações. Entre os desafios da AS podemos destacar a criação de classificadores com boa eficácia. Normalmente, os modelos gerados pelas técnicas não supervisionadas são heuŕısticas espećıficas, manualmente definidas e pouco adaptáveis a diferentes contextos. Assim, o presente trabalho propõe a utilização da Programação Genética (PG) para a geração automatizada de modelos de classificação de sentimento baseados em léxicos. Com isso, espera-se reduzir o custo de geração dos classificadores e aumentar a eficácia para cada domı́nio analisado. Para validar a proposta foi utilizado o benchmark SemEval 2014. Os resultados mostram que a abordagem de geração automatizada com a PG é promissora, pois os modelos gerados superam o baseline e são competitivos com outros trabalhos. Por fim, destaca-se a capacidade da proposta de customização dos modelos léxicos de acordo com o contexto abordado e a possibilidade de transferência de conhecimento dos usuários por meio das funções utilizadas pela PG.
Running head: Admiration: knowns and unknowns Admiration: A conceptual review

120 words Text: 7,994 words Total (including abstract, text, and references): 10,372 words Corresponding author: Diana Onu University of Exeter, Business School Streatham Court, Rennes Drive Exeter EX4 4ST, UK ADMIRATION: KNOWNS AND UNKNOWNS
The physical origin of the X-ray power spectral density break timescale in accreting black holes

X-ray variability of active galactic nuclei (AGN) and black hole binaries can be analysed by means of the power spectral density (PSD). The break observed in the power spectrum defines a characteristic variability timescale of the accreting system. The empirical variability scaling that relates characteristic timescale, black hole mass, and accretion rate (TB ∝ M 2.1 BH / u M 0.98 ) extends from supermassive black holes in AGN down to stellar-mass black holes in binary systems. We suggest that the PSD break timescale is associated with the cooling timescale of electrons in the Comptonisation process at the origin of the observed hard X-ray emission. We find that the Compton cooling timescale directly leads to the observational scaling and naturally reproduces the functional dependence on black hole mass and accretion rate (tC ∝ M 2 BH / u M). This result simply arises from general properties of the emission mechanism and is independent of the details of any specific accretion model.
The Impact of Pecuniary Costs on Commuting Flows

In western Norway, fjords cause disconnections in the road network, necessitating the use of ferries. In several cases, ferries have been replaced by roads, often part-financed by tolls. We use data on commuting from a region with a high number of ferries, tunnels and bridges. Using a doubly-constrained gravity-based model specification, we focus on how commuting responds to varying tolls and ferry prices. Focus is placed on the role played by tolls on infrastructure in inhibiting spatial interaction. We show there is considerable latent demand, and suggest that these tolls contradict the aim of greater territorial cohesion.
Mitigation of soil compaction for boosting crop productivity at varying yield environments in southern Brazil

Soil compaction is one of the most relevant crop yield‐limiting factors in no‐till (NT) farming systems in southern Brazil. This study aimed to identify strategies to mitigate soil compaction and increase crop productivity at low, medium and high yield environments within a field. Treatments evaluated were: control (without intervention), PG (phosphogypsum), MC (mechanical chiselling), PCC (polyculture of cover crops), MC + PG, PCC + PG, MC + PCC and MC + PCC + PG. Soil physical and chemical attributes (soil macroporosity, bulk density, penetration resistance) and soybean yield (Glycine max L.) and black oat (Avena strigosa Schreb) biomass production were evaluated. In the low and medium yield environments, MC + PCC + PG promoted the highest soybean yields: 5,455 kg ha−1 and 5,534 kg ha−1, respectively. In the high yield environment, PCC + PG promoted the highest soybean yield (5,579 kg ha−1), whereas MC decreased yields relative to the control. Black oat biomass production responded to the treatments similarly to soybean yields. Overall, integrating two or three decompaction strategies improved soil physical attributes in a greater proportion relative to single strategies and to the control, enhancing both soybean and black oat performances. Selection of the right decompaction strategies for each yield environment might help increase productivity under NT and optimize the use of time, labour, fuel and other resources.
The marginal cost of public funds in the EU: the case of labour versus green taxes

One key objective of tax-based fiscal consolidations which is too often disregarded in public debate is to minimise economic distortions. This paper uses a computable general equilibrium model to gauge these potential distortions by calculating the marginal cost of public funds (MCF) for EU member states. We consider two specific tax categories which are often proposed as good candidates for efficiency-enhancing tax shifting policies: labour and green taxes. Our analysis suggests that the economic distortions provoked by labour taxes are significantly larger than for green taxes. This result suggests that a green-taxes oriented fiscal consolidation would be preferred to a labour-tax oriented one (assuming that both tax increases would yield the same tax revenues). This holds for all EU member states modelled and despite the fact that potential welfare enhancement through pollution abatement are cancelled-out. Nevertheless, this result is slightly less strong when one considers the spillover effects between countries, which are more pronounced (in relative terms) for green taxes. This suggests that the use of green taxes for fiscal consolidation would be more effective were there to be close coordination across EU countries. In addition the efficiency losses associated with labour taxes are also likely to be greater when labour markets are less flexible (from an efficiency-wage perspective), a result also found to a small extent for green taxes. This raises the possibility that undertaking structural reforms (especially in the labour market) would help to minimize the efficiency losses entailed by tax-driven fiscal consolidations.
OBSERVED VARIABILITY OF THE SOLAR Mg II h SPECTRAL LINE

The Mg ii h&k doublet are two of the primary spectral lines observed by the Sun-pointing Interface Region Imaging Spectrograph (IRIS). These lines are tracers of the magnetic and thermal environment that spans from the photosphere to the upper chromosphere. We use a double-Gaussian model to fit the Mg ii h profile for a full-Sun mosaic data set taken on 2014 August 24. We use the ensemble of high-quality profile fits to conduct a statistical study on the variability of the line profile as it relates the magnetic structure, dynamics, and center-to-limb viewing angle. The average internetwork profile contains a deeply reversed core and is weakly asymmetric at h2. In the internetwork, we find a strong correlation between h3 wavelength and profile asymmetry as well as h1 width and h2 width. The average reversal depth of the h3 core is inversely related to the magnetic field. Plage and sunspots exhibit many profiles that do not contain a reversal. These profiles also occur infrequently in the internetwork. We see indications of magnetically aligned structures in plage and network in statistics associated with the line core, but these structures are not clear or extended in the internetwork. The center-to-limb variations are compared to predictions of semi-empirical model atmospheres. We measure a pronounced limb darkening in the line core that is not predicted by the model. The aim of this work is to provide a comprehensive measurement baseline and preliminary analysis on the observed structure and formation of the Mg ii profiles observed by IRIS.
ACTIVATION ENERGY FOR THE PYROLYSIS OF POLYMERIC WASTES

Pyrolysis of virgin and discarded polystyrene, polyethylene, and polyethylene-terephthalate was done by the means of thermo-gravimetric technique. Activation energy was measured by fitting the experimental data to the nth (n th ) order model. Results have shown that discarded polymers had less activation energy values than those of the virgin polymers. Consequently, energy required for the pyrolysis of discarded polymers must be much less than what is required for virgin polymers. The n th order model has been modified by introducing a new factor which is called degradation index, d i . The degradation index, d i , accounts for the degradation history of the material. d i ranges from 0 to 1 and when it approaches 0 it implies that degradation is anticipated to be severe. When d i approaches 1 it implies that polymeric material is virgin. The approach given by current research, i.e. accounting for actual activation energy for discarded polymers, may be crucial for saving energy when recycling plastics materials by pyrolysis.
Strategic adoption of logistics and supply chain management

This paper develops a thorough understanding of the adoption of logistics and supply chain management in practice, particularly at a strategic level, through an investigation of a taxonomy of the relationship between logistics and supply chain management (SCM). Based on a comprehensive literature review three specific research questions are proposed. The empirical work addresses these questions and comprised three phases: focussed interviews, a questionnaire survey and focus groups. The findings provide a usage profile of the taxonomy and indicate a divergence between the understanding and adoption of logistics and SCM principles and concepts at a strategic level in firms. The findings also identify critical success factors and inhibitors to success in addressing this divergence. The insights generated using the authors’ methodologically pluralist research design could be built upon to include case studies, grounded theory and action research. Replicating the research in other geographical areas would facilitate international comparisons. The findings allow practitioners to compare their perspectives on the relationship between logistics and SCM with those of their peers. The critical success factors and inhibitors to success provide a rational basis for realising the strategic potential of logistics and SCM in practice. New insights are generated into practitioner perspectives vis-a-vis logistics versus supply chain management. A fresh understanding of those factors which drive and hinder the adoption of strategic SCM is also developed and presented.
Morality, institutions and economic growth: Lessons from ancient Greece

We show that the character and the morality of citizens are important ingredients of economic growth because they go hand in hand with the great institutions of private property, democ-racy, and free markets. Our approach enables us to establish this result by reference to the structure and performance of the ancient economies of Athens and Sparta during the period 490-338 BC. Athens grew vastly wealthier than Sparta essentially because its institutions were optimally adjusted to confront the basic scarcity of grains, whereas the institutions of Sparta were optimally adjusted to sustain its military supremacy. However, in both cases there emerged systems of morality, which secured the operating efficiency of their institutions. Therefore, poor countries in search of potent strategies for rapid economic growth should not just try to emulate the institutions of economically advanced countries. At the same time, they should put the emphasis of their efforts to setting up agoge systems, so as to infuse into the character of their citizens compatible “ethos”. For, without the latter, no matter how success-fully they adapt the institutions of democracy and free markets, rapid economic growth will be inhibited from the lack of an environment of generalized morality. In this regard, the ideal type model of agoge is the one that prevailed in ancient Athens 25 centuries ago.
Interspecific differences in the hierarchical cluster structure of leaves within tree crowns in Indochina

Differences in light capture strategies of tropical monsoon trees were examined with a focus on the function of hierarchical leaf cluster structure. Specifically, morphological differences in leaf clusters were examined among ecological functional groups of tree species. The three-dimensional distribution of leaves within 62 crowns of 21 species in or above the canopy layer was estimated using a terrestrial laser scanner. Leaf clusters with hierarchical structure were identified within each crown, and the thickness and inclination of a leaf cluster were calculated. The light capture property of the crown was examined using the light extinction coefficient and the directional dependency of light capture. An ordination technique was used to organize crown architecture into two axes: one corresponding to the directional dependency of light capture, which separates leaf phenological types, and the other representing the spatial scale contributing to light capture, which separates growth forms. Similar leaf cluster shapes at various spatial levels ranging from small leaf clusters to crowns caused specialization of crown directional dependency, which was clearest in emergent species. In deciduous species, flatter leaf clusters at various spatial levels were specialized to efficiently capture overhead light, whereas rounder leaf clusters at various spatial levels in evergreen species were specialized to uniform light capture from all directions. Different light capture strategies among functional groups in tropical monsoon forest would be related to drought stress response.
THE IMPACT OF AIR-SEA INTERACTIONS ON TYPHOON STRUCTURE

In this work, the results of a coupled experiment and an uncoupled experiment conducted in one of our former works are used to analyze the impact of air-sea interactions on the structure of typhoons. Results reveal that typhoon-induced SST decreases to reduce the latent heat fluxes transporting from the ocean to the atmosphere and cause the flux of sensible heat to transfer downward from the atmosphere to the ocean. Such SST reduction also has remarkable impacts on the typhoon structure by making the typhoon more axisymmetric, especially in the middle and high levels. This study also analyzes the basic characteristics of symmetric typhoon structure.
Species of Schizotricha Allman, 1883 (Cnidaria, Hydrozoa) from recent antarctic expeditions with R.V. 'Polarstern', with the description of a new species

Five species of the genus Schizotricha Allman, 1883, one of which is new to science, have been studied. The material originates from the Weddell Sea region and from off Elephant Island and it was collected during several antarctic expeditions with the R.V. Tolarstern'. Each species is described and figured and its systematic position among allied species discussed. The type material of Schizotricha glacialis (Hickson & Gravely, 1907) and S. turqueti Billard, 1906 has been re-examined and is also described and figured.