Search results for "Planetary Science"
showing 10 items of 4367 documents
Forholdet mellom elevers motivasjon for kroppsøvingsfaget, motivasjonsklima og tilhørighet i kroppsøvingstimene, og deres intensjon om å være fysisk …
2021
Studiens hensikt var å undersøke forholdet mellom elevers tilhørighet i kroppsøvingstimene, deres opplevelse av motivasjonsklimaet i faget og deres intensjon om å være fysisk aktive etter endt obligatorisk skolegang, samt å undersøke i hvilken grad autonom og kontrollert motivasjon medierte det ovennevnte forholdet. Tverrsnittsdata fra 2610 avgangselever ved ungdoms- og videregående skoler fra fire forskjellige geografiske områder i Norge dannet grunnlaget for mediasjonsanalysen. Denne målte indirekte effekter ved hjelp av en bias-korrigert bootstrapping metode. Resultatene viste at opplevd tilhørighet og opplevd mestringsklima i faget var positivt assosiert med elevers intensjoner om å vær…
Automatic Relative Radiometric Normalization of Bi-Temporal Satellite Images Using a Coarse-to-Fine Pseudo-Invariant Features Selection and Fuzzy Int…
2022
Relative radiometric normalization (RRN) is important for pre-processing and analyzing multitemporal remote sensing (RS) images. Multitemporal RS images usually include different land use/land cover (LULC) types; therefore, considering an identical linear relationship during RRN modeling may result in potential errors in the RRN results. To resolve this issue, we proposed a new automatic RRN technique that efficiently selects the clustered pseudo-invariant features (PIFs) through a coarse-to-fine strategy and uses them in a fusion-based RRN modeling approach. In the coarse stage, an efficient difference index was first generated from the down-sampled reference and target images by combining…
Short-period volcanic gas precursors to phreatic eruptions: Insights from Poás Volcano, Costa Rica
2016
Texto completo del documento Volcanic eruptions involving interaction with water are amongst the most violent and unpredictable geologic phenomena on Earth. Phreatic eruptions are exceptionally difficult to forecast by traditional geophysical techniques. Here we report on short-term precursory variations in gas emissions related to phreatic blasts at Poás volcano, Costa Rica, as measured with an in situ multiple gas analyzer that was deployed at the edge of the erupting lake. Gas emitted from this hyper-acid crater lake approaches magmatic values of SO2/CO21–6 days prior to eruption. The SO2flux derived from magmatic degassing through the lake is measureable by differential optical absorpti…
Geoethical education: A critical issue for geoconservation
2013
Some geological outcrops have a special scientific or educational value, represent a geological type locality and/or have a considerable aesthetical/photographic value. Such important outcrops require appropriate management to safeguard them from potentially damaging and destructive activities. Damage done to such rock exposures can include drill sampling by geologist for scientific purposes. In this work, we show how outcrops important to structural geology and petrology can be damaged unnecessarily by drill coring. Unfortunately, regulation and protection mechanisms and codes of conduct can be ineffective. The many resources of geological information available to the geoscientist communit…
Co-creation of IT-value in a cluster of small enterprises
2018
Abstract There is a growing emphasis on digital transformation in research and business practice. The creation of value from IT-investments is a critical factor in digital transformation. Research has documented that the ability to realize IT-value is a very challenging endeavor, especially for small enterprises who because of resource poverty are dependent on external input and cooperation with other companies. There is a general lack of research on the phenomenon of how IT-value is co-created, particularly in small firms. This paper reports from a study of a cluster of performing arts organizations, Blender Collective. They realized that audience data is a key issue, and that they lack th…
Mapping and assessing ecosystem services in the EU:Lessons learned from the ESMERALDA approach of integration
2018
The European Union (EU) Horizon 2020 Coordination and Support Action ESMERALDA aimed at developing guidance and a flexible methodology for Mapping and Assessment of Ecosystems and their Services (MAES) to support the EU member states in the implementation of the EU Biodiversity Strategy's Target 2 Action 5. ESMERALDA's key tasks included network creation, stakeholder engagement, enhancing ecosystem services mapping and assessment methods across various spatial scales and value domains, work in case studies and support of EU member states in MAES implementation. Thus ESMERALDA aimed at integrating various project outcomes around four major strands: i) Networking, ii) Policy, iii) Research an…
Online Communication with Citizens. Should Latvian Public Institutions Learn from Foreign Experience?
2021
Civic engagement is a core value of democracy that approves legitimacy of democracy itself and decisions made by public institutions. In Latvia, civic engagement rates are decreasing, thus for public institutions it is important to find new ways how to engage citizens in the decision-making process. In the twenty-first century, it means that public institutions should also be present in social media. The objectives of the article are to identify foreign experience how public institutions are using social media for civic engagement and evaluate the reasons for Latvian public institutions to learn from this foreign experience. Accordingly, methods of the research are analysis of scientific pu…
Actitudes religiosas, Valores y Razonamiento Moral Prosocial en una muestra adolescente
2017
Objetivo: estudiar la relación existente entre la religiosidad, los valores y el razonamiento moral prosocial de estudiantes de secundaria. La primera hipótesis que se pretende comprobar es si la religiosidad es capaz de predecir algún tipo específico de razonamiento moral prosocial (RMP). La segunda hipótesis trata de investigar si la religiosidad está relacionada con los valores de la escala de Rockeach. Metodología: la muestra utilizada está compuesta por 421 adolescentes de entre 13 y 18 años. Se han llevado a cabo modelos de regresión múltiple y pruebas MANOVA. Resultados: según los modelos de regresión múltiple, se concluyó que los estudiantes que dan menos importancia a Dios en sus v…
Natural and anthropogenic influences on the geochemistry of Quaternary lake sediments from Holzmaar, Germany
1997
The accumulation of heavy metals and trace elements has been investigated in a well laminated sequence of Holocene and late Pleistocene lake sediments composed of diatomaceous gyttja, tuff and silt and clay sediments. Varve chronology of the annually deposited gyttja yielded a continuous high-resolution time sequence and allowed the absolute age dating of the sediment. Fluxes of elements remained largely uniform from the late Pleistocene into the Holocene. Higher trace element and heavy metal fluxes occur from 2322 to 862 VT years ago (VT: varve time, years before 1950) and reached their maxima in the uppermost sediments (<845 VT years ago). These increasing element fluxes correlate with in…
Organic Nitrate Therapy, Nitrate Tolerance, and Nitrate-Induced Endothelial Dysfunction: Emphasis on Redox Biology and Oxidative Stress
2015
Abstract Organic nitrates, such as nitroglycerin (GTN), isosorbide-5-mononitrate and isosorbide dinitrate, and pentaerithrityl tetranitrate (PETN), when given acutely, have potent vasodilator effects improving symptoms in patients with acute and chronic congestive heart failure, stable coronary artery disease, acute coronary syndromes, or arterial hypertension. The mechanisms underlying vasodilation include the release of •NO or a related compound in response to intracellular bioactivation (for GTN, the mitochondrial aldehyde dehydrogenase [ALDH-2]) and activation of the enzyme, soluble guanylyl cyclase. Increasing cyclic guanosine-3′,-5′-monophosphate (cGMP) levels lead to an activation of…