Miracle-dz/UniFAR-FTUs huggingface dataset:
DESCRIPTION OF A BOTTLENOSE DOLPHIN CALF’S ACOUSTIC AND VISUAL EXPLORATORY BEHAVIOUR TOWARDS A NON-ALIMENTARY COMPLEX OBJECT

Author(s): Lopez Marulanda, Juliana; Roynette, Noemie; Blanchard, Torea; Adam, Olivier; Delfour, Fabienne | Abstract: Exploratory behaviour includes all the actions that an animal performs to obtain information about a new object, environment or individual through using its different senses of perception. Here, we studied the development of the exploratory behaviour of a bottlenose dolphin (Tursiops truncatus) calf aged from 39 to 169 days, by investigating its acoustic productions in relation to an immerged object handled by a familiar human without isolation from its original social group. The study was conducted between July 2015 and January 2016 at Parc Asterix dolphinarium (Plailly, France). Simultaneous audio and video recordings were collected using a waterproof 360° audio-video system named BaBeL which allows localization of the dolphin that is producing sounds. During 32 recordings sessions, for a total duration of 6 hours 55 minutes of audio-video recordings, 46 click trains were attached to individual dolphins: 18 times to the calf, 11 times to its mother and 17 times to another dolphin in the pool. When comparing the calf’s acoustical production to its mother’s, no significant differences were found in their click rate, mean click duration, or mean interclick interval (ICI). However, linear regression showed that calf’s click rate increased with age and mean ICI decreased with age, probably due to an increase in its arousal. This non-intrusive methodology allows the description and analysis of acoustic signal parameters and acoustic exploratory behaviour of a dolphin calf within its social group.
Spatially Common Sparsity Based Adaptive Channel Estimation and Feedback for FDD Massive MIMO

This paper proposes a spatially common sparsity based adaptive channel estimation and feedback scheme for frequency division duplex based massive multi-input multi-output (MIMO) systems, which adapts training overhead and pilot design to reliably estimate and feed back the downlink channel state information (CSI) with significantly reduced overhead. Specifically, a nonorthogonal downlink pilot design is first proposed, which is very different from standard orthogonal pilots. By exploiting the spatially common sparsity of massive MIMO channels, a compressive sensing (CS) based adaptive CSI acquisition scheme is proposed, where the consumed time slot overhead only adaptively depends on the sparsity level of the channels. In addition, a distributed sparsity adaptive matching pursuit algorithm is proposed to jointly estimate the channels of multiple subcarriers. Furthermore, by exploiting the temporal channel correlation, a closed-loop channel tracking scheme is provided, which adaptively designs the nonorthogonal pilot according to the previous channel estimation to achieve an enhanced CSI acquisition. Finally, we generalize the results of the multiple-measurement-vectors case in CS and derive the Cramér-Rao lower bound of the proposed scheme, which enlightens us to design the nonorthogonal pilot signals for the improved performance. Simulation results demonstrate that the proposed scheme outperforms its counterparts, and it is capable of approaching the performance bound.
Influence of Cu Underlayer on the High-Frequency Magnetic Properties of FeCoSiO Thin Films

A series of soft magnetic FeCoSiO films was fabricated on Si (100) substrates using Cu as the underlayer by radio frequency magnetron sputtering. The influence of Cu underlayers on the dynamic magnetic properties of FeCoSiO thin films was studied in detail. The results show that the Cu underlayers have a significant influence on the high-frequency properties and the damping factor of as-sputtered FeCoSiO films, while the static magnetic properties of sputtered films do not demonstrate obvious improvement. In the absence of Cu underlayers, the optimal films with the desired properties of low coercivity, Hc ~ 2.5 Oe; high saturation magnetization, 4πMs ~ 11.6 kGs; and high natural ferromagnetic resonant frequency, fr ~ 4.05 GHz, were obtained. With the increase of the underlayer's thickness, the complex permeability of FeCoSiO films has a significant change. The damping factor, which can be determined by curve fitting, based on the theoretical equation changed from 0.04 to 0.19 and reaches its maximum value when the Cu thickness is 2 nm. The increasing extent of damping factor is much larger than that in the previous reports. The reason is suggested to be related to change the film's stress, surface, and interface roughness by the underlayer. It shows that using a Cu underlayer is an effective way for tuning the high-frequency properties and damping factor of soft magnetic thin films. It also implies that the effect of underlayer must be considered when the magnetic films are used in the gigahertz band.
Series Compensator Based on Cascaded Transformers Coupled With Three-Phase Bridge Converters

This paper proposes a multilevel series compensator (MSC) to deal with voltage sags/swells, harmonic compensation, or reactive power compensation. Such a device can be considered as a dynamic voltage restorer or a series active power filter (Series-APF). The MSC can improve the power quality of loads located in stiff systems. The configuration is based on three-phase bridge (TPB) converters connected by means of cascaded single-phase transformers. This arrangement permits the use of a single dc-link. A generalization for <inline-formula><tex-math notation="LaTeX">$K$ </tex-math></inline-formula>-stages in which <inline-formula><tex-math notation="LaTeX">$K$</tex-math></inline-formula> -transformers are coupled with <inline-formula><tex-math notation="LaTeX">$K$</tex-math></inline-formula>-TPB converters is presented. The topology permits generating a high number of levels in the voltage waveforms with a low number of power switches in comparison with a classic topology. The multilevel waveforms are generated by the converters through a suitable pulsewidth modulation (PWM) strategy that takes into consideration the transformer turns ratios. Modularity and simple maintenance make the proposed MSC an attractive solution compared with some conventional configurations. Model, PWM strategy, and overall control are discussed in this paper. Simulation and experimental results are presented as well.
Preparation, microstructure and properties of Sn-Ag-Cu solder reinforced with Al2O3 nanoparticles

Sn3.0Ag0. 5Cu(SAC)-XAl<sub>2</sub>O<sub>3</sub>(X = 0.2, 0.4, 0.6, 0.8 wt.%) composite solders reinforced with Al<sub>2</sub>O<sub>3</sub> nanoparticles were prepared through the powder metallurgy route (ball milling, compacting and sintering). After ball milling, the morphology of composite powder was studied by scanning electron microscopy (SEM). In addition, the prepared composite solders were characterized in terms of their microstructure, wettability and microhardness. After mixing by ball milling, the Al<sub>2</sub>O<sub>3</sub> nanoparticles were found embedded into the surface of Sn-Ag-Cu solder powder. Moreover, microstructure observation proved Al<sub>2</sub>O<sub>3</sub> nanoparticles were successfully incorporated into the SAC solder. Finer microstructure with smaller β-Sn grains was achieved with the addition of Al<sub>2</sub>O<sub>3</sub> nanoparticles. On the other hand, wettability was improved by moderate addition of Al<sub>2</sub>O<sub>3</sub> nanoparticles. 12.6% decrease in contact angle was achieved with 0.4 wt. % Al<sub>2</sub>O<sub>3</sub> nanoparticles addition. Microhardness of composite solders increased with the increasing content of Al<sub>2</sub>O<sub>3</sub> nanoparticles. This improved mechanical property can be attributed to the refined microstructure and the dispersed Al<sub>2</sub>O<sub>3</sub> nanoparticles.
The role of teacher care in determining academic success of community college students: a case study from Hong Kong

ABSTRACT This article highlights findings from a case study research investigating factors that foster the academic achievement of community college students in Hong Kong. Data was collected from in-depth interviews with six community college students in a middle-sized, self-funded community college. The findings illustrate nuanced facets of teacher care that are conducive to students’ academic and personal development, including (i) teachers as important transmitters of knowledge; (ii) teachers as care-givers; (iii) pedagogical care; (iv) teachers as advice-givers, and (v) teachers as role models. The research has practical implications for practices within community colleges and teacher training in the sub-degree sector.
Mean platelet volume as a predictor of pulmonary hypertension in patients with stable COPD

Background: Pulmonary hypertension (PH) is one of the most common complications developed during the course of chronic obstructive pulmonary disease (COPD). Platelet activation plays an important role in its pathophysiology, and mean platelet volume (MPV) is considered a respectable index of platelet activation. The aim of this work is to assess the ability of MPV in predicting PH secondary to COPD as well as its severity. Methods: A cross-sectional study was conducted on 228 stable COPD patients. CBC, echocardiography, and pulmonary function tests were performed. Results: The prevalence of PH in stable COPD patients was high (63%), and the majority of patients had a mild degree (33%). There was no significant association between PH presence with different COPD grade, but, in very severe COPD, severe PH was significantly presented. MPV in COPD patients with PH was significantly higher than those without (9.02±1.14 vs 7.11±0.98, P<0.001). Moreover, a significant statistical rising of MPV with increased severity of PH. Multivariate regression analysis of predictors of PH demonstrated that; MPV is a real predictor of PH in such patients. The likelihood probability of PH increased up to 7-times with increasing one unit of MPV; (OR=6.7). A cut-off value of MPV >7.25 had 96% sensitivity and 76% specificity in predicting PH. Conclusion: MPV was higher in COPD patients with PH and positively correlated with PH severity. If the data are to be confirmed, MPV may be taken into consideration in decision-making and management of COPD patients.
DAYA DUKUNG HIJAUAN RUMPUT ALAM SEBAGAI PAKAN TERNAK SAPI POTONG DI BKPH KEBASEN, BANYUMAS

Ketersediaan dan produksi hijauan pakan merupakan kebutuhan utama pakan ternak sapi potong di pedesaan seperti didaerah sekitar kawasan kehutanan . Penelitian telah dilaksanakan di lahan BKPH. Kebasen, Banyumas bertujuan untuk mengetahui daya dukung hijauan rumput alam sebagai pakan ternak sapi potong. Metode penelitian yang digunakan yaitu Rancangan Acak Lengkap (RAL). Sebagai perlakuan yaitu empat wilayah RPH. (Kalirajut, Mandirancan, Kebasen dan Sidamulih) Setiap perlakuan diambil sampel secara komposit sebanyak 10 (sepuluh ) unit. Parameter yang dicatat adalah produksi segar dan bahan kering serta kadar nutrisi hijauan rumput alam. Hasil penelitian ternyata belum menunjukan adanya perbedaan yang nyata P > 0.05 terhadap produksi hijauan segar dan bahan kering serta kadar nutrisinya.
Mechanisms for an Amplified Precipitation Seasonal Cycle in the U.S. West Coast under Global Warming

The mean precipitation along the U.S. West Coast exhibits a pronounced seasonality change under warming. Here we explore the characteristics of the seasonality change and investigate the underlying mechanisms, with a focus on quantifying the roles of moisture (thermodynamic) versus circulation (dynamic). The multimodel simulations from phase 5 of the Coupled Model Intercomparison Project (CMIP5) show a simple “wet-get-wetter” response over Washington and Oregon but a sharpened seasonal cycle marked by a stronger and narrower wet season over California. Moisture budget analysis shows that changes in both regions are predominantly caused by changes in the mean moisture convergence. The thermodynamic effect due to the mass convergence of increased moisture dominates the wet-get-wetter response over Washington and Oregon. In contrast, mean zonal moisture advection due to seasonally dependent changes in land–sea moisture contrast originating from the nonlinear Clausius–Clapeyron relation dominates the sharpened wet season over California. More specifically, the stronger climatological land–sea thermal contrast in winter with warmer ocean than land results in more moisture increase over ocean than land under warming and hence wet advection to California. However, in fall and spring, the future change of land–sea thermal contrast with larger warming over land than ocean induces an opposite moisture gradient and hence dry advection to California. These results have important implications for projecting changes in the hydrological cycle of the U.S. West Coast.
Intersowing Cover Crops into Standing Soybean in the US Upper Midwest

Nutrient losses and soil erosion after soybean (Glycine max (L.) Merr. ) harvest are common in the US Upper Midwest. Cover crops need to provide adequate growth and cover to prevent soil degradation throughout the winter and early spring months. The objective of this study was to determine the establishment of intersown cover crops and their impacts on a soybean-wheat rotation. Four cover crops—winter camelina (Camelina sativa (L.) Crantz), winter pea (Pisum sativum ssp. arvense (L.) Poir), winter rye (Secale cereale L.), and radish (Raphanus sativus L.)—were directly sown at the R4 and R6 stages of soybean at two locations, Prosper and Fargo, ND in 2016–2017. Cover crops above ground biomass in the fall ranged from 0.4 to 3.0 Mg ha−1 and N accumulation ranged from 28.7 to 73.2 kg ha−1. Winter camelina and winter rye reduced subsequent spring wheat yield compared with the no cover crop treatment. Fall soil residual NO3-N levels were lowest where cover crops were sown compared with the check. Spring NO3-N levels were lowest in winter camelina and winter rye compared with all the other cover crops and the check. Results indicated intersowing cover crops have no impact on soybean yield, and show potential to mitigate soil nitrate losses in areas that grow soybean as a cash crop.
Editorial: Corporate law and governance fundamental issues and peculiarities

The first issue of the journal “Corporate Law & Governance Review” is devoted to the issues of convergence of corporate governance towards intrinsic value, the impact of 4.0. innovation and regulations in the labour market, the effects of law and regulation on Italian corporate board practices in Italy and the board specificities in listed Portuguese firms.
Comments on the Reply to the Rebuttal to: Zhu, Jin, & He ‘On evolutionary economic geography: A literature review using bibliometric analysis’, European Planning Studies vol. 27, pp 639–660

and the author keywords were considered. As a result, 4,803 documents (88% of the 5,435 documents) had searching keywords in their ‘front page’ while 632 documents (12%) did not include any searching keywords in their ‘front page’. For example highly cited review with 100 or more total citations from Web of Science Core Collection since publication to the end of 2017 (TC2017≥ 100) (Hsu & Ho, 2014), ‘From sectoral systems of innovation to socio-technical systems: Insights about dynamics and change from sociology and institutional theory’ (Geels, 2004), and highly cited articles ‘The limits to scale? Methodological reflections on scalar structuration’ (Brenner, 2001), ‘Experimental investigation of the lithium-ion battery impedance characteristic at various conditions and aging states and its influence on the application’ (Waag, Kabitz, & Sauer, 2013), and ‘Ideas and social policy: An institutionalist perspective’ (Beland, 2005). By using the ‘front page’ as a filter, it will avoid introducing unrelated articles for analysis (Fu et al., 2012; Ho, 2018c). Since any results and discussions depend on the data abstracted by a search filter, an inappropriate filter may lead to inaccurate results and wrong conclusions (Ho, 2018a,2018c). In recent years, similar rebuttals have also been published in Environmental Science and Pollution Research (Ho, 2018a), Renewable & Sustainable Energy Reviews (Ho, 2018c), and Journal of Soils and Sediments (Ho, 2019). 1242 COMMENTARY
Changes in New Zealand daily rainfall extremes 1930 - 2004

Atmospheric circulation has a major impact on mean rainfall in New Zealand due to the large orographic component of rainfall in this country. Since 1930, both New Zealand-average air temperatures and westerly circulation have increased, with the largest increases occurring after 1950. A detailed analysis of New Zealand extreme rainfall for two periods (1930-2004 and 1950-2004) was undertaken, using 11 indices of extremity based on high-quality daily station data. Of interest was whether extremes differed in the later (warmer) period. Regional variation in trends was strongly evident, with a west-east pattern across major mountain ranges showing increased rainfall extremity in the west, but decreased extremity and increased dry spell duration in the east, consistent with increased westerly circulation over New Zealand. This zonal pattern persisted over both periods, even against a background of warming. Index trends showed temporal consistency between the periods, except for a simple intensity measure (rainfall per rain day). Changes in extreme daily rainfalls were strongly related to changes in mean rainfall, although the relationship was weaker in the later (warmer) period. Station 1-day rainfall extremity was highly correlated to westerly circulation (zonal flow) across the country, and to a much lesser extent, meridional flow and New Zealand-averaged temperature anomaly.
Evaluation of Tissue Response in Sites Sutured with Cyanoacrylate and Submitted to Low Power Laser Therapy: A Randomized Clinical Trial

This study aimed to qualitatively evaluate the inflammatory response in sites sutured with nylon and 2-octyl cyanoacrylate and submitted to low-power laser therapy. Background: 2-octyl cyanoacrylate acts as both a bonding agent for incisional wounds and a substitute for conventional suture methods after topical application, forming an occlusive layer that prevents the entry of any exogenous agent into the wound. Tissue reactions such as granuloma formation are cited in the literature as possible outcomes following 2-octyl cyanoacrylate use. Methods: Thirty wistar rats, were randomized into groups of five, of which fifteen were sutured with 2-octyl cyanoacrylate and another fifteen with nylon thread. In the postoperative period, all the animals were submitted to low power laser therapy in a single centralised region, with light perpendicular to the surgical wound, applied every 48 hours via the ArGaAl laser, with a wavelength of 685nm, a dose of 4J/cm2 and power level of 35mW. All the animals were kept in separate cages, under similar conditions, and provided with water and ad libitum feed. Animals were euthanized at 1 day (D1), 3 days (D2) and 7 days (D3). Tissue samples were removed from the central region of the wound and the slides were stained with hematoxylin and eosin. Results: Histological sections were analysed by evaluating inflammatory parameters and in accordance with a previously standardized scale. Similar inflammatory reactions were observed between sutured wounds with nylon and cyanoacrylate, with no statistically significant differences observed. Conclusions: Results suggest that there is no difference in the association between 2-octyl cyanoacrylate and laser therapy and nylon sutures with and the same As-Ga-Al laser application dosage
Efficient HIV-1 Trans Infection of CD4+ T Cells Occurs in the Presence of Antiretroviral Therapy

Abstract Background Antiretroviral therapy (ART) has dramatically improved the quality of life of people with HIV-1 infection (PWH). However, it is not curative, and interruption of ART results in rapid viral rebound. Cell-to-cell transfer of HIV-1, or trans infection, is a highly efficient mechanism of virus infection of CD4+ T cells by professional antigen-presenting cells (APCs), that is, dendritic cells (DCs), macrophages, and B lymphocytes. Methods APC from HIV seronegative donors treated with ART in vitro (CCR5 agonist, NRTI, PI and NNRTI, alone or in combination), were loaded with HIV R5-tropic HIVBal and mixed with autologous or heterologous CD4+ T lymphocytes to assess trans infection. Ex vivo APC from chronic HIV-infected MACS participants before and after initiation of ART, were also loaded with HIV R5-tropic HIVBal and tested for trans infection against autologous or heterologous CD4+ T lymphocytes. Virus replication was measured by p24 ELISA. Results Here we show in vitro that antiretroviral drugs did not block the ability of DCs and B cells to trans-infect CD4+ T cells, although they were effective in blocking direct cis infection of CD4+ T cells. Moreover, ex vivo DCs and B cells from ART-suppressed PWH mediated efficient HIV-1 trans infection of CD4+ T cells, which were resistant to direct cis infection. Conclusions Our study supports a role for HIV-1 trans infection in maintenance of the HIV-1 reservoir during ART.
The effect of auxins on the rooting of cuttings in several species of Fabaceae

The effect of auxins on the rooting of cuttings in several species of Fabaceae. In view of their diversity, plants of the family Fabaceae are very popular among gardeners and landscape architects. They are used as solitary plants, ground covers or climbers, as well as for mass planting in green urban areas. The aim of this trial was to evaluate the effect of commercial rooting powders containing respectively 0.4% IBA (indolilo-3-butyric acid), 0.2% NAA with 0.1% IBA, and 1% IBA, and a water solution of IBA (200 mg·dm–3), on the rooting of three Fabaceae species: Cytisus decumbens, Genista tinctoria ‘Royal Gold’ and Wisteria oribunda ‘Ludwik Lawin’. The tested preparations signi cantly improved the degree and percentage of rooting in cuttings of all taxa. For W. oribunda and G. tinctoria the best results were obtained from the application of the preparations containing 1% IBA and 0.2% NAA with 0.1% IBA, while in the case of C. decumbens the rooting powder with 0.4% IBA was equally effective. Foliar application of the water IBA solution gave results comparable to the rooting powders in dyer’s broom, while in wisteria its ef ciency was lower than that of the commercial preparations.