Search results for "ONG"
showing 10 items of 9299 documents
MySQL- ja MongoDB-tietokantojen suorituskykyvertailu
2018
Datan määrä ja rakenne on muuttunut vuosikymmenien saatossa huimasti, ja tiedonkäsittely kokee uusia haasteita jatkuvasti. Perinteiset relaatiotietokannat eivät välttämättä enää sovellu ratkaisemaan näitä ongelmia. 2000-luvun puolella vaihtoehdoksi ovat tulleet NoSQL-tietokannat, joiden tavoitteena on tarjota ratkaisukeinoja näihin uusiin haasteisiin. Tässä tutkielmassa käsitellään relaatio- ja NoSQL-tietokantojen taustoja ja eroavaisuuksia. Erityisesti tutkielmassa keskitytään tietokantojen suorituskykyyn. Tutkielmassa mitattiin ja vertailtiin MySQL ja MongoDB tietokantojen suorituskykyä, jotka edustavat vastaavasti relaatio- ja NoSQL-tietokantoja. Suorituskykytesteihin käytettiin avoimen …
ADHD symptoms and maladaptive achievement strategies: the reciprocal prediction of academic performance beyond the transition to middle school
2023
This longitudinal study examined how two externalising behaviour problems, attention-deficit hyperactivity disorder (ADHD) and conduct disorder (CDs), are associated over time with low motivation (MAS), and how these problems effect academic performance. In our cross-lagged analysis, we found reciprocal effects between ADHD symptoms and MAS between Grades 5 and 6. Both domains also negatively predicted later academic performance. With CDs and MAS, no cross-lagged effects were found, although both were correlated and very stable over time, and negatively predicted later academic performance. These different kinds of externalising problem behaviours seem to differ in the way in which they int…
The Ipsilateral Interhemispheric Transprecuneal Approach to the Atrium: Technical Considerations and Clinical Outcome on a Series of 7 Patients
2022
Surgical removal of tumors of the atrium is challenging due to their deep location, vascularization, and to their complex three-dimensional relationships with the highly functional white matter fibers of the region. To assess the feasibility and the effectiveness of the ipsilateral interhemispheric transprecuneus approach (IITA) for tumors involving the atrium and the posterior third of the temporal horn, a retrospective chart review of all patients who had undergone a surgical treatment for intraventricular tumors between January 2008 and January 2017 was performed, and the step-by-step approach is described. Ten patients affected by lesions of the atrium of the lateral ventricle underwent…
Virtualization of work in global supply chains
2016
ABSTRACT. Background: The paper is devoted to the notion and benefits of implementing virtual work in global supply chains. Virtual work must be understood as an intentional activity of a human being, aimed at rendering services (tangible and intangible), by means of ITC tools, performed in a distance from the traditional place of work, in a mobile manner. The empirical research were conducted on the basis of 4 case studies of global leaders of supply chains, which in accordance with M. Fisher's classification, represent two types. The case studies confirmed the positive influence of virtual work both in effective and flexible supply chains. Favourable market and technological conditions an…
Catalytic applications of TiO2
2021
Abstract The use of TiO2 as heterogeneous catalyst and/or active support for metals or other oxides is here reported. Many reactions of industrial relevance involve, in fact, titania-based catalysts, among them, NOx abatement, Fischer–Tropsch and water–gas shift, Deacon and Claus processes, hydrodesulfurizations and hydrogenations, selective reductions and selective oxidations. This chapter aims to discuss the main applications of TiO2, in its different forms, as effective support or catalyst for thermocatalytic and photo-thermocatalytic reactions, focusing on the role of its structural and physicochemical properties on the catalytic performance (activity, selectivity, stability).
Coupling the Higgs mode and ferromagnetic resonance in spin-split superconductors with Rashba spin-orbit coupling
2022
We show that the Higgs mode of superconductors can couple with spin dynamics in the presence of a static spin-splitting field and Rashba spin-orbit coupling. The Higgs-spin coupling dramatically modifies the spin susceptibility near the superconducting critical temperature and consequently enhances the spin pumping effect in a ferromagnetic insulator/superconductor bilayer system. We show that this effect can be detected by measuring the magnon transmission rate and the magnon-induced voltage generated by the inverse spin Hall effect.
Finite-frequency spin susceptibility and spin pumping in superconductors with spin-orbit relaxation
2020
Static spin susceptibility of superconductors with spin-orbit relaxation has been calculated in the seminal work of A.A. Abrikosov and L.P. Gor'kov [Sov. Phys. JETP, {\bf 15}, 752 (1962)]. Surprisingly the generalization of this result to finite frequencies has not been done despite being quite important for the modern topic of superconducting spintronics. The present paper fills this gap by deriving the analytical expression for spin susceptibility. The time-dependent spin response is shown to be captured by the quasiclassical Eilenberger equation with collision integrals corresponding to the ordinary and spin-orbit scattering. Using the developed formalism we study the linear spin pumping…
Longitudinal Changes in Suicide Bereavement Experiences : A Qualitative Study of Family Members over 18 Months after Loss
2023
Family members bereaved by their loved ones’ suicidal death normally undergo a complicated and lengthy bereavement process. In this qualitative case study, we explored longitudinal changes in the suicide bereavement process by applying assimilation analysis, based on the Assimilation Model (AM) and the Assimilation of Problematic Experiences Scale (APES), to longitudinal interview data collected from two Chinese suicide-bereaved individuals within the first 18 months after their loss. The results showed that over time the participants both progressed in adapting to their traumatic losses. Assimilation analysis both effectively elaborated the difference in the inner world of the bereaved and…
Brief an Garlieb H. Merkel
1797
Ms. 930a, Nr. 5, Bl. 11r-14v Recke, Charlotte Elisabeth (Elisa) Constantia v. der. Brief an Garlieb H. Merkel, Pyrmont (?), d[en] 8. May 1797 Autora rokraksts / Autograph, vācu un franču val. / Deutsch und Französisch [8] lpp. / S. Attēlu numuri / Bildnummern: 930a-005-1 – 930a-005-8 Der Brief von Elisabeth von der Recke wurde wahrscheinlich in Pyrmont verfasst. Die Autorin bezieht sich auf einen Brief Merkels, auf den sie antwortet. Sie äußert ihre grundsätzliche Zustimmung zur Idee einer Befreiung der Bauern in Liv- und Kurland und kann als Besitzerin zweier Güter, die ihr von der Kaiserin Katharina II. übereignet wurden, als Adressatin von Merkels Forderungen, die er in „Die Letten“ form…
Physiological and autonomic stress responses after prolonged sleep restriction and subsequent recovery sleep in healthy young men
2018
Purpose Sleep restriction is increasingly common and associated with the development of health problems. We investigated how the neuroendocrine stress systems respond to prolonged sleep restriction and subsequent recovery sleep in healthy young men. Methods After two baseline (BL) nights of 8 h time in bed (TIB), TIB was restricted to 4 h per night for five nights (sleep restriction, SR, n = 15), followed by three recovery nights (REC) of 8 h TIB, representing a busy workweek and a recovery weekend. The control group (n = 8) had 8 h TIB throughout the experiment. A variety of autonomic cardiovascular parameters, together with salivary neuropeptide Y (NPY) and cortisol levels, were assessed.…