المؤلفون: Meghisan-Toma, G.M., Puiu, S., Florea, N., Meghisan-Toma, F., Badarcea, R., Manta, A.

المصدر: Amfiteatru Economic, Vol 24, Iss 59, Pp 46-60 (2022)

مصطلحات موضوعية: digitization, industry 4.0., sustainability, environment commitment, green performance, green production., Business, HF5001-6182, Economics as a science, HB71-74

الوصف: The main aim of this research article is to develop an econometric model in order to establish the influence of green performance on digitization, green production and environment commitment. The data was collected through a questionnaire- based survey on companies’ representatives. The analysis was made using the Partial Least Square ‒ Structural Equation Modelling (PLS-SEM) with the statistical software SmartPLS. The results of the research confirm the three hypotheses. Thus, green performance of Romanian companies has a positive impact on green production, digitization and environment commitment. The novelty consists in the interconnected analysis of the four variables (green performance, digitization, green production and environment commitment), the research highlighting valuable results that can be used by the companies to improve their green performance, using green production and digitization. The paper offers a picture of the sustainable transformation of Romanian companies based on the industry 4.0, green production and environment commitment, highlighting the interdependence of the analysed variables. The research is helpful for companies that want to be more responsible towards the environment and the community

وصف الملف: electronic resource

العلاقة: https://www.amfiteatrueconomic.ro/temp/Article_3063.pdfTest; https://doaj.org/toc/1582-9146Test; https://doaj.org/toc/2247-9104Test

الوصول الحر: https://doaj.org/article/2969388548424c4baab289d8f1c9d2daTest

المؤلفون: MANTA Collaboration, Rutherford, G., Wilson, H. S., Saltzman, A., Arnold, D., Ball, J. L., Benjamin, S., Bielajew, R., de Boucaud, N., Calvo-Carrera, M., Chandra, R., Choudhury, H., Cummings, C., Corsaro, L., DaSilva, N., Diab, R., Devitre, A. R., Ferry, S., Frank, S. J., Hansen, C. J., Jerkins, J., Johnson, J. D., Lunia, P., van de Lindt, J., Mackie, S., Maris, A. D., Mandell, N. R., Miller, M. A., Mouratidis, T., Nelson, A. O., Pharr, M., Peterson, E. E., Rodriguez-Fernandez, P., Segantin, S., Tobin, M., Velberg, A., Wang, A. M., Wigram, M., Witham, J., Paz-Soldan, C., Whyte, D. G.

مصطلحات موضوعية: Physics - Plasma Physics

الوصف: The MANTA (Modular Adjustable Negative Triangularity ARC-class) design study investigated how negative-triangularity (NT) may be leveraged in a compact, fusion pilot plant (FPP) to take a ``power-handling first" approach. The result is a pulsed, radiative, ELM-free tokamak that satisfies and exceeds the FPP requirements described in the 2021 National Academies of Sciences, Engineering, and Medicine report ``Bringing Fusion to the U.S. Grid". A self-consistent integrated modeling workflow predicts a fusion power of 450 MW and a plasma gain of 11.5 with only 23.5 MW of power to the scrape-off layer (SOL). This low $P_\text{SOL}$ together with impurity seeding and high density at the separatrix results in a peak heat flux of just 2.8 MW/m$^{2}$. MANTA's high aspect ratio provides space for a large central solenoid (CS), resulting in ${\sim}$15 minute inductive pulses. In spite of the high B fields on the CS and the other REBCO-based magnets, the electromagnetic stresses remain below structural and critical current density limits. Iterative optimization of neutron shielding and tritium breeding blanket yield tritium self-sufficiency with a breeding ratio of 1.15, a blanket power multiplication factor of 1.11, toroidal field coil lifetimes of $3100 \pm 400$ MW-yr, and poloidal field coil lifetimes of at least $890 \pm 40$ MW-yr. Following balance of plant modeling, MANTA is projected to generate 90 MW of net electricity at an electricity gain factor of ${\sim}2.4$. Systems-level economic analysis estimates an overnight cost of US\$3.4 billion, meeting the NASEM FPP requirement that this first-of-a-kind be less than US\$5 billion. The toroidal field coil cost and replacement time are the most critical upfront and lifetime cost drivers, respectively.

الوصول الحر: http://arxiv.org/abs/2405.20243Test

المؤلفون: Skriapa-Manta, A, Venkataraman, AP, Olsson, M, Nilsson, M, Fahnehjelm, KT

المصدر: Acta ophthalmologica.

مصطلحات موضوعية: Medicin och hälsovetenskap

الوصول الحر: http://kipublications.ki.se/Default.aspx?queryparsed=id:158284681Test

المؤلفون: AnaMaria Davidescu, Adriana, author, Manta, Eduard Mihai, author, Florescu, Margareta-Stela, author, Geambasu, Cristina Maria, author, Radu, Catalina, author

المصدر: Finance Analytics in Business

الوصول الحر: http://www.emeraldinsight.com/doi/10.1108/978-1-83753-572-920241001Test

المؤلفون: Grigorescu, Adriana, author, Davidescu, Adriana AnaMaria, author, Manta, Eduard Mihai, author, Geambasu, Cristina Maria, author, Magdalena, Ionel, author

المصدر: VUCA and Other Analytics in Business Resilience, Part A

الوصول الحر: http://www.emeraldinsight.com/doi/10.1108/978-1-83753-902-420241001Test

مستخلص: An eye mask for sleeping has a headband and two eyecups. The headband comprises an inner surface and an outer surface. The two eyecups are configured to cover two eyes respectively. Each eyecup has an adhering surface, a contact surface, and multiple first passages. The adhering surface is securely mounted on the inner surface of the headband. The contact surface is configured to cover one of the eyes of the user. The first passages are formed through each eyecup and extend from the adhering surface to the contact surface. With the eyecups mounted on the headband and configured to cover the eyes of the user, because the first passages are formed through the eyecups, heat and moisture can be dissipated and drained via the first passages.

المؤلفون: Skriapa-Manta, A, Nilsson, M, Svoboda, J, Olsson, M, Teär Fahnehjelm, K

المصدر: Clinical ophthalmology (Auckland, N.Z.). 16:3785-3794

مصطلحات موضوعية: Medicin och hälsovetenskap

الوصول الحر: http://kipublications.ki.se/Default.aspx?queryparsed=id:236419566Test

المؤلفون: Gaston Manta, Eviatar Bach, Stefanie Talento, Marcelo Barreiro, Sabrina Speich, Michael Ghil

المصدر: Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)

مصطلحات موضوعية: Medicine, Science

الوصف: Abstract This study analyzes coupled atmosphere–ocean variability in the South Atlantic Ocean. To do so, we characterize the spatio-temporal variability of annual mean sea-surface temperature (SST) and sea-level pressure (SLP) using Multichannel Singular Spectrum Analysis (M-SSA). We applied M-SSA to ERA5 reanalysis data (1959–2022) of South Atlantic SST and SLP, both individually and jointly, and identified a nonlinear trend, as well as two climate oscillations. The leading oscillation, with a period of 13 years, consists of a basin-wide southwest–northeast dipole and is observed both in the individual variables and in the coupled analysis. This mode is reminiscent of the already known South Atlantic Dipole, and it is probably related to the Pacific Decadal Oscillation and to El Niño–Southern Oscillation in the Pacific Ocean. The second oscillation has a 5-year period and also displays a dipolar structure. The main difference between the spatial structure of the decadal, 13-year, and the interannual, 5-year mode is that, in the first one, the SST cold tongue region in the southeast Atlantic’s Cape Basin is included in the pole closer to the equator. Together, these two oscillatory modes, along with the trend, capture almost 40% of the total interannual variability of the SST and SLP fields, and of their co-variability. These results provide further insights into the spatio-temporal evolution of SST and SLP variability in the South Atlantic, in particular as it relates to the South Atlantic Dipole and its predictability.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2045-2322Test

الوصول الحر: https://doaj.org/article/c64ffa9afb5642518fa80636cefc10e8Test

المؤلفون: Davidescu Adriana AnaMaria, Manta Eduard Mihai, Geambasu Cristina Maria, Birlan Ioana

المصدر: Management şi Marketing, Vol 19, Iss 2, Pp 307-335 (2024)

مصطلحات موضوعية: informality, sustainable development, leave no one behind, informal workers, panel data, Business, HF5001-6182

الوصف: The informal economy, often characterized by unregulated and untaxed economic activities, has significant yet understudied implications for sustainable development and inclusivity. This paper explores the influence of the size of the shadow economy and undeclared work patterns (envelope wage, without a formal contract and bogus self-employed) on the Leave No One Behind Index and the Sustainable Development Index developed by the United Nations across European countries from 2000 to 2021. Employing panel data regression models, the research investigates the differential impacts of informality on these indices, revealing a negative correlation with the informal economy and a positive association with various forms of undeclared work. The analysis, comprising 18 models segmented by region – Central and Eastern Europe, Western Europe, and Europe – demonstrates that the adverse effects of the informal economy are more pronounced, whereas the positive contributions of undeclared work patterns are subtler, yet significant. The study’s findings suggest a complex interaction between informal economic activities and sustainable development goals, challenging the conventional perspective on informality and its role in inclusive development. The results indicate that while the shadow economy may hinder broad development efforts, informal labor arrangements support vulnerable populations, underscoring the need for nuanced policy interventions that recognize the multifaceted nature of work and its impacts on development.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2069-8887Test

الوصول الحر: https://doaj.org/article/17fb6ff3d97844a98f7217bcc58ee388Test