About this title - The Geology and Tectonics of the Jabal Akhdar and Saih Hatat Domes, Oman Mountains

10.1144/m54 ◽  
2021 ◽  
Vol 54 (1) ◽  
pp. NP-NP
Author(s):  
A. Scharf ◽  
F. Mattern ◽  
M. Al-Wardi ◽  
G. Frijia ◽  
D. Moraetis ◽  
...  
Keyword(s):  
State Of The Art ◽  
Three Dimensions ◽  
Arid Climate ◽  
Snowball Earth ◽  
Metamorphic Rocks ◽  
Geological Record ◽  
Oman Mountains ◽  
Deep Incision ◽  
Rock Exposure ◽  
Geological Map

The geology of the Oman Mountains, including the Jabal Akhdar and Saih Hatat domes, is extraordinarily well-exposed and diverse, spanning a geological record of more than 800 Ma. The area is blessed with first-class outcrops and is well known in the geological community for its ophiolite. The Oman Mountains have much more to offer; including, Neoproterozoic diamictites (“Snowball Earth”), fossil-rich Permo-Mesozoic carbonates and metamorphic rocks. The arid climate and deep incision of wadis allow for nearly complete rock exposure which can be investigated in all three dimensions. The diverse geology is also responsible for the breathtaking landscape. New roads and the nature of the friendly Omani people make fieldwork unforgettable.This Memoir provides a thorough state-of-the-art overview of the geology and tectonics of the Southeastern Oman Mountains, and is accompanied by an over-sized geological map and a correlation chart.

scholarly journals G-Tric: generating three-way synthetic datasets with triclustering solutions

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
João Lobo ◽  
Rui Henriques ◽  
Sara C. Madeira
Keyword(s):  
State Of The Art ◽  
Synthetic Data ◽  
Ground Truth ◽  
Real Data ◽  
Three Dimensions ◽  
Additional Advantage ◽  
Urban Dynamics ◽  
Data Generator ◽  
Real World Datasets ◽  
Synthetic Datasets

Abstract Background Three-way data started to gain popularity due to their increasing capacity to describe inherently multivariate and temporal events, such as biological responses, social interactions along time, urban dynamics, or complex geophysical phenomena. Triclustering, subspace clustering of three-way data, enables the discovery of patterns corresponding to data subspaces (triclusters) with values correlated across the three dimensions (observations $$\times$$ × features $$\times$$ × contexts). With increasing number of algorithms being proposed, effectively comparing them with state-of-the-art algorithms is paramount. These comparisons are usually performed using real data, without a known ground-truth, thus limiting the assessments. In this context, we propose a synthetic data generator, G-Tric, allowing the creation of synthetic datasets with configurable properties and the possibility to plant triclusters. The generator is prepared to create datasets resembling real 3-way data from biomedical and social data domains, with the additional advantage of further providing the ground truth (triclustering solution) as output. Results G-Tric can replicate real-world datasets and create new ones that match researchers needs across several properties, including data type (numeric or symbolic), dimensions, and background distribution. Users can tune the patterns and structure that characterize the planted triclusters (subspaces) and how they interact (overlapping). Data quality can also be controlled, by defining the amount of missing, noise or errors. Furthermore, a benchmark of datasets resembling real data is made available, together with the corresponding triclustering solutions (planted triclusters) and generating parameters. Conclusions Triclustering evaluation using G-Tric provides the possibility to combine both intrinsic and extrinsic metrics to compare solutions that produce more reliable analyses. A set of predefined datasets, mimicking widely used three-way data and exploring crucial properties was generated and made available, highlighting G-Tric’s potential to advance triclustering state-of-the-art by easing the process of evaluating the quality of new triclustering approaches.

scholarly journals Digital entrepreneurship in Morocco: measurement model validation

2021 ◽  
Vol 119 ◽  
pp. 03004
Author(s):  
Zakia Saoura ◽  
Ahmed Abriane ◽  
Aniss Moumen
Keyword(s):  
Quantitative Research ◽  
State Of The Art ◽  
Measurement Model ◽  
Arab Countries ◽  
Three Dimensions ◽  
Measurement Scale ◽  
Global Entrepreneurship Monitor ◽  
Entrepreneurial Motivations ◽  
Digital Entrepreneurship ◽  
Do So

According to the 2017 Global Entrepreneurship Monitor report, there are 6.5 million adults aged 18-64 planning to start an entrepreneurial career by 2020. However, the gap between attempt and effective creations remains one of the largest within Arab countries (40% versus 9%). Given these statistics, we ask the question about the profile of the Moroccan entrepreneur. In this paper, we opted for a quantitative research methodology on an exploratory sample. We distributed a questionnaire to a sample of eighty Moroccan entrepreneurs representing different regions of Morocco. The objective of our study is to validate a measurement scale of three dimensions: 1/ entrepreneurial motivations, 2/ skills, and 3/ behaviour in the Moroccan context. To do so, we present, in the first part, a literature review on digital entrepreneurship. Then, we establish a state of the art of entrepreneurship in Morocco. Then, we show our methodology. Finally, we reveal and discuss the results of our study.

scholarly journals Initiation of a Marinoan Snowball Earth in a state-of-the-art atmosphere-ocean general circulation model

2011 ◽  
Vol 7 (1) ◽  
pp. 249-263 ◽  
Author(s):  
A. Voigt ◽  
D. S. Abbot ◽  
R. T. Pierrehumbert ◽  
J. Marotzke
Keyword(s):  
Sea Ice ◽  
Bifurcation Point ◽  
General Circulation ◽  
State Of The Art ◽  
Circulation Model ◽  
Ocean General Circulation Model ◽  
Snowball Earth ◽  
Surface Boundary ◽  
Surface Boundary Conditions ◽  
Global Mean

Abstract. We study the initiation of a Marinoan Snowball Earth (~635 million years before present) with the state-of-the-art atmosphere-ocean general circulation model ECHAM5/MPI-OM. This is the most sophisticated model ever applied to Snowball initiation. A comparison with a pre-industrial control climate shows that the change of surface boundary conditions from present-day to Marinoan, including a shift of continents to low latitudes, induces a global-mean cooling of 4.6 K. Two thirds of this cooling can be attributed to increased planetary albedo, the remaining one third to a weaker greenhouse effect. The Marinoan Snowball Earth bifurcation point for pre-industrial atmospheric carbon dioxide is between 95.5 and 96% of the present-day total solar irradiance (TSI), whereas a previous study with the same model found that it was between 91 and 94% for present-day surface boundary conditions. A Snowball Earth for TSI set to its Marinoan value (94% of the present-day TSI) is prevented by doubling carbon dioxide with respect to its pre-industrial level. A zero-dimensional energy balance model is used to predict the Snowball Earth bifurcation point from only the equilibrium global-mean ocean potential temperature for present-day TSI. We do not find stable states with sea-ice cover above 55%, and land conditions are such that glaciers could not grow with sea-ice cover of 55%. Therefore, none of our simulations qualifies as a "slushball" solution. While uncertainties in important processes and parameters such as clouds and sea-ice albedo suggest that the Snowball Earth bifurcation point differs between climate models, our results contradict previous findings that Snowball Earth initiation would require much stronger forcings.

scholarly journals Precambrian metamorphites as part of the petrographic diversity of Rila Geopark

2021 ◽  
Vol 82 (1) ◽  
pp. 11-29
Author(s):  
Dimitar Sinnyovsky
Keyword(s):  
Popular Science ◽  
Metamorphic Rocks ◽  
Historical Overview ◽  
Geological Processes ◽  
Lithostratigraphic Units ◽  
Intrusive Rocks ◽  
Geological Information ◽  
Geological Map ◽  
The Republic ◽  
Popular Language

The petrographic diversity of Rila Mountain is an important prerequisite for the development of Rila Geopark and its nomination for UNESCO Geopark. According to the principle of the thematic geodiversity, the leading theme of the geopark – glacial landscapes, is complemented by the remarkable petrographic diversity of igneous and metamorphic rocks, in which alpine glacial forms are developed. Following a recent review of the intrusive rocks that make up the Rila-West Rhodope Batholith, the concept of Rila Geopark would not be complete without a retrospective of the metamorphic rocks that are an integral part of its petrographic diversity. The different approaches (lithodemic and lithotectonic) to the mapping of the Rila-Rhodope Massif divided the geologists into two camps. This led to a discrepancy in terminology and nomenclature of the metamorphic units, which is unacceptable in the context of the educational priority of the geopark. For the purpose of geotourism, clear and understandable interpretations are required to provoke the visitors’ interest in geological processes and phenomena, rather than confusion and perplexity. This article is a historical overview of the geological study of the metamorphic terrains in Rila Mountain with a scheme of lithodemic units based on the existing lithostratigraphic nomenclature. This approach allows the preservation of the names of the lithostratigraphic units, whose toponymic adjectives derive from well known geographical features in the Rila-Rhodope Massif. The rank term is replaced by a lithological or descriptive term, which frees the nomenclature from the dogmatic restrictions of the stratigraphic code and reduces the distance between the strictly scientific and popular science approach used for interpretation of geological information in a popular language accessible to the general public. This methodology is consistent with the approach recommended for mapping of non-stratified bodies on the Geological Map of the Republic of Bulgaria at a scale 1:50 000.

Advances in drug delivery, gene delivery and therapeutic agents based on dendritic materials

2019 ◽  
Vol 11 (14) ◽  
pp. 1791-1810 ◽  
Author(s):  
Mario Contin ◽  
Cybele Garcia ◽  
Cecilia Dobrecky ◽  
Silvia Lucangioli ◽  
Norma D’Accorso
Keyword(s):  
Drug Delivery ◽  
Gene Delivery ◽  
Biomedical Applications ◽  
State Of The Art ◽  
Synthetic Polymers ◽  
Therapeutic Agents ◽  
Therapeutic Strategies ◽  
Common Point ◽  
Three Dimensions ◽  
Dendrimer Conjugates

Dendrimers are synthetic polymers that grow in three dimensions into well-defined structures. Their morphological appearance resembles a number of trees connected by a common point. Dendritic nanoparticles have been studied for a large number of pharmaceutical and biomedical applications including gene and drug delivery, clinical diagnosis and MRI. Despite the application of dendrimers, research is still in its childhood in comparison with liposomes and other nanomaterials. They are now playing a key role in several therapeutic strategies, with dendrimer-based products in clinical trials. The aim of this review is to describe the state-of-the-art of biomedical applications of dendrimers – and dendrimer conjugates – such as drug and gene delivery and antiviral activity.

scholarly journals Educate for Technological Innovation

2019 ◽  
Vol 1 (1) ◽  
pp. 479-488
Author(s):  
Frido Smulders ◽  
Bertien Broekhans ◽  
Aldert Kamp ◽  
Hans Hellendoorn ◽  
Hans Welleman
Keyword(s):  
Graduate Students ◽  
Technological Innovation ◽  
Engineering Students ◽  
New Technologies ◽  
State Of The Art ◽  
New Technology ◽  
Three Dimensions ◽  
Technical Knowledge ◽  
Engineering Knowledge ◽  
Grand Challenges

AbstractAt Polytechnics design & engineering students are taught about state-of-the-art technical knowledge. Students become qualified engineers and learn to innovate artifacts related to their domain.Not taught is how to develop new engineering knowledge within a multidisciplinary context of stakeholders, companies and regulations. In short, students don't learn to innovate technology. What is taught today is the result of a technological innovation of yesterday. This is not sufficient for industry to innovatively deal with society's grand challenges.The paper describes a project that aims to educate all TU Delft graduate students in the verb of innovating technology, that is, the development of new technologies from inventions in the labs to full- fledged application in business. Such along three dimensions: technical, human and business.The educational portfolio consists of three modules in line with growth along Bloom's taxonomy and online materials on theoretical backbones. All modules apply the notion of technological innovation journeys (Tijo's). Tijo's are rich descriptions of the developmental journey of new technology and are based on inventions from the university's own labs.

XXIX.—The Highland Schists of Middle Deeside and East Glen Muick

1928 ◽  
Vol 55 (3) ◽  
pp. 755-772 ◽  
Author(s):  
H. H. Read
Keyword(s):  
Regional Metamorphism ◽  
Metamorphic Rocks ◽  
East Side ◽  
The West ◽  
Geological Map ◽  
Wide Gap ◽  
North And South ◽  
Eastern Half

A glance at a geological map of Middle Deeside shows that below Cambus O'May the valley is floored by a belt of metamorphic rocks flanked on both north and south by high hills of Younger Granite, of a date later than the regional metamorphism. The area of metamorphic rocks here considered extends from Cambus O'May down river to Banchory, but in the eastern half of this region the geological problems concern injection rather than tectonics. The cordon of Younger Granites enclosing the Deeside Schists is breached on the west near Cambus O'May by a mile-wide gap through which the metamorphic rocks escape to connect with those of the east side of Glen Muick. In this latter district the schists of as far south as the Aberdeenshire-Forfarshire watershed are considered in detail. Adjacent regions farther south and south-east are dealt with only in so far as they concern the correlation of the Deeside Schists.

A state-of-the-art survey on spherical fuzzy sets1

2021 ◽  
pp. 1-18
Author(s):  
Eren Ozceylan ◽  
Baris Ozkan ◽  
Mehmet Kabak ◽  
Metin Dagdeviren
Keyword(s):  
Fuzzy Sets ◽  
Fuzzy Set ◽  
State Of The Art ◽  
Descriptive Analysis ◽  
Past Research ◽  
Three Dimensions ◽  
Future Research ◽  
Systematic Review Methodology ◽  
Existing Structures ◽  
Scientific Papers

In addition to the well-known fuzzy sets, a novel type of fuzzy set called spherical fuzzy set (SFS) is recently introduced in the literature. SFS is the generalized structure over existing structures of fuzzy sets (intuitionistic fuzzy sets-IFS, Pythagorean fuzzy sets-PFS, and neutrosophic fuzzy sets-NFS) based on three dimensions (truth, falsehood, and indeterminacy) to provide a wider choice for decision-makers (DMs). Although the SFS has been introduced recently, the topic attracts the attention of academicians at a remarkable rate. This study is the expanded version of the authors’ earlier study by Ozceylan et al. [1]. A comprehensive literature review of recent and state-of-the-art papers is studied to draw a framework of the past and to shed light on future directions. Therefore, a systematic review methodology that contains bibliometric and descriptive analysis is followed in this study. 104 scientific papers including SFS in their titles, abstracts and keywords are reviewed. The papers are then analyzed and categorized based on titles, abstracts, and keywords to construct a useful foundation of past research. Finally, trends and gaps in the literature are identified to clarify and to suggest future research opportunities in the fuzzy logic area.

scholarly journals The Calcite (104) Surface - Electrolyte Structure: A 3D Comparison of Surface X-Ray Diffraction and Simulations

2020 ◽  
Author(s):  
Sander Brugman ◽  
Paolo Raiteri ◽  
Paolo Accordini ◽  
Frank Megens ◽  
Julian Gale ◽  
...  
Keyword(s):  
State Of The Art ◽  
Interfacial Structure ◽  
Three Dimensions ◽  
Ion Adsorption ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure Factors ◽  
First Time ◽  
Experimental Structure ◽  
Good Agreement

<div>Adsorption and incorporation of ions is known to influence the morphology and growth of calcite. Using surface X-ray diffraction, the interfacial structure of calcite in contact with CaCO3, MgCl2, CaCl2</div><div>and BaCl2 solutions was determined. All of these conditions yield a comparable interfacial structure,</div><div>meaning that there is no significant ion adsorption. This allows for the first time a thorough comparison in all three dimensions with state-of-the-art computer simulations, involving molecular dynamics</div><div>based on both DFT and two different force field models. Additionally, the simulated structures are</div><div>used to calculate the corresponding structure factors, which in turn are compared to those obtained</div><div>from experiment, thereby avoiding the need for fitting or subjective interpretation. In general, there</div><div>is a good agreement between experiment and the simulations, though there are some small discrepancies in the atomic positions, which lead to an inadequate fit of certain features characteristic of the</div><div>structure of water at the interface. Of the three simulation methods examined, the DFT results were</div><div>found to agree best with the experimental structure.</div>

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