Von der Berufung zum Job?

In our culture, helping people in need is essentially determined by Christian motivations. This applies not least to the time of the formation phase of the organised social form of diaconal action since the middle of the 19th century. Regardless of the many transformations that have resulted in helping becoming a profession for many people, religious motivations remain formative, but are no longer dominant. However, a latent openness of helping professions to normative, especially Christian semantics can be observed, to which diaconal leadership can be connected.

Global Sensitivity Analysis for CERES-Rice Model under Different Cultivars and Specific-Stage Variations of Climate Parameters

Global sensitivity analysis (SA) has become an efficient way to identify the most influential parameters on model results. However, the effects of cultivar variation and specific-stage variations of climate conditions on model outputs still remain unclear. In this study, 30 indica hybrid rice cultivars were simulated in the CERES-Rice model; then the Sobol’ method was used to perform a global SA on 16 investigated parameters for three model outputs (anthesis day, maturity day, and yield). In addition, we also compared the differences in the sensitivity results under four specific-stage variations (vegetative phase, panicle-formation phase, ripening phase, and the whole growth season) of climate conditions. The results indicated that (1) parameter Tavg, G4, and P2O are the most influential parameters for all model outputs across cultivars during the whole growth season; (2) under the vegetative-phase variation of climate parameters; the variability of model outputs is mainly controlled by parameter P2O and Tavg; (3) under the panicle-formation-phase or ripening-phase variation of climate parameters, parameter P2O was the dominant variable for all model outputs; (4) parameter PORM had a considerable effect (the total sensitivity index, STi; STi>0.05) on yield regardless of the various specific-stage variations of the climate parameters. Findings obtained from this study will contribute to understanding the comprehensive effects of crop parameters on model outputs under different cultivars and specific-stage variations of climate conditions.

Hemispheric sea ice extent dynamics as observed from MSMR

The ice covered regions of the polar seas influence the global climate in several ways. Any perturbation in the polar oceanic cryosphere affects the local weather and the global climate through modulation of the radiative forcing, the bottom water formation and the mass & the momentum transfer between Atmosphere-Cryosphere-Ocean System. The cold, harsh and inhospitable conditions in the polar regions prohibit the collection of extensive in situ data with sufficient spatial and temporal variation. However, satellite remote sensing is an ideal technique for studying the areas like the polar regions with synoptic and repetitive coverage. This paper discusses the analysis of the data obtained over the polar oceanic regions during the period June 1999 – September 2001 through the use of Multi-channel Scanning Microwave Radiometer (MSMR), onboard India’s first oceanographic satellite Oceansat-1. The MSMR observation shows that all the sectors in the Antarctic behave differently to the melting and formation of the sea ice. Certain peculiar features like the increase in sea ice extent during the melt season of 1999 – 2000 in the Indian Ocean sector, 15 – 20% decrease in the sea ice extent in the western Pacific sector during the ice formation period for the year 2000, melting spell within the formation phase of sea ice in B & A sector in the year 2000 were observed. On the other hand the northern polar sea ice extent is seen to be more dominated by the land characteristics. The ice formation in Kara and the Barent Sea sector is dominated by the ocean currents, where as the ice covered in the Japan and the Okhotsk Sea is dominated by the land processes. The sea ice extent in the Arctic Ocean show fluctuations from July to October and remain almost steady over other months. The global sea ice cover shows a formation phase from March to June and melting phase from November to February. In other months, i.e., from July – October the global sea ice cover is dominated by the hemispheric asymmetry of the ice growth and retreat.

The growth and development depending on the pre-sowing sunflower treatment method in the southern chestnut soils zone of the Volgograd region

The work contains the results of research carried out in 2015…2017, the seeds pre-sowing treatment methods influence in the alternating voltage electric field with the intensity of 8 kV/cm with an exposure of 60 seconds, by a Zerebra Agro growth regulator with an aqueous solution of 100 ml/1 liter of water. The decrease in the period from sowing to germination by 1 day, the decrease in the duration of the germination phase - basket formation by 3…5 days in the NK Neoma hybrid, by 1 day in the LG 5550 hybrid, by 2 days in the EU Petunia hybrid was established. The duration of the basket formation phase - flowering in the NK Neoma hybrid increased significantly in the EU Petunia hybrid by 6…7 days, not significantly in the LG 5550 hybrid by 1 day. The flowering-maturation phase lasted 51…56 days for the NK Neoma hybrid, 49…52 days for the LG 5550 hybrid, and 42…46 days for the EU Petunia hybrid. The duration of the germination-maturation phase in the NK Neoma hybrid increased by 2…3 days, in the LG 5550 hybrid by 2…3 days.

Formation, Phase Stability, and Characterization of Unstabilized Aluminum Titanate (Al2TiO5) Ceramics

In the present study, Al2TiO5 was prepared via the sol–gel technique then sintered at 1000°C to 1300°C for 1 h. The thermal stability of the formed ceramic bodies was explored. The densification parameters, microstructure, and phase composition of the sintered Al2TiO5 ceramic were examined, and the mechanical properties and thermal coefficient were characterized. The phase composition study revealed the presence of alumina and TiO2 residuals up to 1100°C. Phase stability was observed in Al2TiO5 bodies sintered up to 1300°C. The vitrification behavior of the bodies was improved by increasing the sintering temperature. The thermal expansion coefficient of the sintered samples sintered at 1300°C was enhanced by the formation of rod-like Al2TiO5 grains. Increases in the bending strength (from 22.40 to 28.90 MPa) and hardness (HV0.1; from 1467 to 1873) were observed when the treatment temperature was increased from 1000°C to 1300°C.

A framework for quantifying uncertainty in DFT energy corrections

In this work, we demonstrate a method to quantify uncertainty in corrections to density functional theory (DFT) energies based on empirical results. Such corrections are commonly used to improve the accuracy of computational enthalpies of formation, phase stability predictions, and other energy-derived properties, for example. We incorporate this method into a new DFT energy correction scheme comprising a mixture of oxidation-state and composition-dependent corrections and show that many chemical systems contain unstable polymorphs that may actually be predicted stable when uncertainty is taken into account. We then illustrate how these uncertainties can be used to estimate the probability that a compound is stable on a compositional phase diagram, thus enabling better-informed assessments of compound stability.

Six transiting planets and a chain of Laplace resonances in TOI-178

<p class="p1">Determining the architecture of multi-planetary systems is one of the cornerstones of understanding planet formation and evolution. Resonant systems are especially important as the fragility of their orbital configuration ensures that no significant scattering or collisional event has taken place since the earliest formation phase when the parent protoplanetary disc was still present. As unveiled by TESS, CHEOPS, ESPRESSO, NGTS and SPECULOOS, TOI-178 harbours at least six planets in the super-Earth to mini-Neptune regimes, all planets but the innermost one form a 2:4:6:9:12 chain of Laplace resonances, and the planetary densities show important variations from planet to planet. TOI-178 have hence several characteristics that were not previously observed in a single system, making it a key system for the study of processes of formation and evolution of planetary systems. We will review what we know of TOI-178, and what we expect from futur observations.</p>

Scalable Fabrication of 3D Structured Microparticles Using Induced Phase Separation

Microparticles with defined shapes and spatial chemical modification can enable new opportunities to interface with cells and tissues at the cellular scale. However, conventional methods to fabricate shaped microparticles have trade-offs between the throughput of manufacture and precision of particle shape and chemical functionalization. Here, we achieved scalable production of hydrogel microparticles at rates of greater than 40 million/hour with localized surface chemistry using a parallelized step emulsification device and temperature-induced phase-separation. The approach harnesses a polymerizable polyethylene glycol (PEG) and gelatin aqueous-two phase system (ATPS) which conditionally phase separates within microfluidically-generated droplets. Following droplet formation, phase separation is induced and phase separated droplets are subsequently crosslinked to form uniform crescent and hollow shell particles with gelatin functionalization on the boundary of the cavity. The gelatin localization enabled deterministic cell loading in nanoliter-sized crescent-shaped particles, which we refer to as nanovials, with cavity dimensions tuned to the size of cells. Loading on nanovials also imparted improved cell viability during analysis and sorting using standard fluorescence activated cell sorters, presumably by protecting cells from shear stress. This localization effect was further exploited to selectively functionalize capture antibodies to nanovial cavities enabling single-cell secretion assays with reduced cross-talk in a simplified format.

Assessing critical incidents in the post-formation phase: a matter of entrepreneurial expertise?

Purpose Entrepreneurs can easily slide into severe economic crises (Fichman and Levinthal, 1991), in particular, in the first years after their founding. Additionally, research shows that entrepreneurs often lack a realistic evaluation of the entrepreneurial risks and barriers. Referring to research on cognitive and networked expertise (Ericsson et al., 2006; Hakkarainen et al., 2004), recognising and reflecting on potential failure may help to prevent or manage upcoming crises (Mitchell et al., 2008). Thus, this study aims to test whether assessing upcoming crises in a new venture varies along with the level of entrepreneurial expertise. Design/methodology/approach In a cross-sectional design with three subgroups (start-up consultants, entrepreneurs and students), this study evaluated critical incidents that have already been validated as likely to emerge in the post-formation phase (Heinrichs and Jäcklin, 2017). Entrepreneurial expertise was measured by seven indicators, chosen based on the approaches of cognitive and networked expertise. Findings By applying latent profile analyses, the participants were grouped along with these indicators of expertise in three levels. Analysis of variance showed significant differences amongst the profiles in perceiving critical incidents. Experts rated the incidents significantly higher than semi-experts and novices towards indicating financial risks (medium effect) and the probability that the entrepreneur could manage the upcoming crises (large effect). Originality/value The results call for developing and evaluating interventions, e.g. case-oriented entrepreneurship education courses (Heinrichs, 2016), that foster future entrepreneurs’ expertise in perceiving and managing entrepreneurial risks to prevent entrepreneurial failure.