cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.963475.v2
title: Shape-Constrained Estimation Using Nonnegative Splines

description: We consider the problem of nonparametric estimation of unknown smooth functions in the presence of restrictions on the shape of the estimator and on its support using polynomial splines. We provide a general computational framework that treats these estimation problems in a unified manner, without the limitations of the existing methods. Applications of our approach include computing optimal spline estimators for regression, density estimation, and arrival rate estimation problems in the presence of various shape constraints. Our approach can also handle multiple simultaneous shape constraints. The approach is based on a characterization of nonnegative polynomials that leads to semidefinite programming (SDP) and second-order cone programming (SOCP) formulations of the problems. These formulations extend and generalize a number of previous approaches in the literature, including those with piecewise linear and B-spline estimators. We also consider a simpler approach in which nonnegative splines are approximated by splines whose pieces are polynomials with nonnegative coefficients in a nonnegative basis. A condition is presented to test whether a given nonnegative basis gives rise to a spline cone that is dense in the space of nonnegative continuous functions. The optimization models formulated in the article are solvable with minimal running time using off-the-shelf software. We provide numerical illustrations for density estimation and regression problems. These examples show that the proposed approach requires minimal computational time, and that the estimators obtained using our approach often match and frequently outperform kernel methods and spline smoothing without shape constraints. Supplementary materials for this article are provided online.
DOI: 10.6084/m9.figshare.963470.v1
title: A glacial geomorphological map of the southernmost ice lobes of Patagonia: the Bahía Inútil – San Sebastián, Magellan, Otway, Skyring and Río Gallegos lobes

description: This paper presents a glacial geomorphological map of the landforms created by five large ice lobes that extended eastwards from the southernmost reaches of the Patagonian Ice Sheet during the Quaternary period. The study is focussed on Tierra del Fuego, but also updates previous mapping of the Skyring and Otway lobes, and the resulting level of detail and extent is a significant advance on previous work in the region. The map has been created as the necessary precursor for an improved understanding of the glacial history of the region, and to underpin a programme of dating glacial limits in the region. It was produced using Landsat ETM+ and ASTER satellite imagery and vertical aerial photography, supplemented by Google Earth™ imagery and field-checking. Eleven landform types were mapped: moraine ridges, subdued moraine topography, kettle-kame topography, glacial lineations, irregular and regular hummocky terrain, irregular dissected ridges, eskers, meltwater channels, former shorelines and outwash plains. The map reveals three important characteristics of the glacial geomorphology. First, the geomorphic systems are largely dominated by landforms associated with meltwater (channels, outwash plains and kettle-kame topography). Second, there is a difference in the nature of landforms associated with the northern three ice lobes, where limits are generally marked by numerous clear moraine ridges, compared to those to the south, where hummocky terrain and drift limits prevail. Finally, cross-cutting landforms offer evidence of multiple advances, in places, which has implications for the timing of limit deposition, and thus for the design and interpretation of a dating programme.
DOI: 10.6084/m9.figshare.963470.v2
title: A glacial geomorphological map of the southernmost ice lobes of Patagonia: the Bahía Inútil – San Sebastián, Magellan, Otway, Skyring and Río Gallegos lobes

description: This paper presents a glacial geomorphological map of the landforms created by five large ice lobes that extended eastwards from the southernmost reaches of the Patagonian Ice Sheet during the Quaternary period. The study is focussed on Tierra del Fuego, but also updates previous mapping of the Skyring and Otway lobes, and the resulting level of detail and extent is a significant advance on previous work in the region. The map has been created as the necessary precursor for an improved understanding of the glacial history of the region, and to underpin a programme of dating glacial limits in the region. It was produced using Landsat ETM+ and ASTER satellite imagery and vertical aerial photography, supplemented by Google Earth™ imagery and field-checking. Eleven landform types were mapped: moraine ridges, subdued moraine topography, kettle-kame topography, glacial lineations, irregular and regular hummocky terrain, irregular dissected ridges, eskers, meltwater channels, former shorelines and outwash plains. The map reveals three important characteristics of the glacial geomorphology. First, the geomorphic systems are largely dominated by landforms associated with meltwater (channels, outwash plains and kettle-kame topography). Second, there is a difference in the nature of landforms associated with the northern three ice lobes, where limits are generally marked by numerous clear moraine ridges, compared to those to the south, where hummocky terrain and drift limits prevail. Finally, cross-cutting landforms offer evidence of multiple advances, in places, which has implications for the timing of limit deposition, and thus for the design and interpretation of a dating programme.
DOI: 10.6084/m9.figshare.963470.v4
title: A glacial geomorphological map of the southernmost ice lobes of Patagonia: the Bahía Inútil – San Sebastián, Magellan, Otway, Skyring and Río Gallegos lobes

description: This paper presents a glacial geomorphological map of the landforms created by five large ice lobes that extended eastwards from the southernmost reaches of the Patagonian Ice Sheet during the Quaternary period. The study is focussed on Tierra del Fuego, but also updates previous mapping of the Skyring and Otway lobes, and the resulting level of detail and extent is a significant advance on previous work in the region. The map has been created as the necessary precursor for an improved understanding of the glacial history of the region, and to underpin a programme of dating glacial limits in the region. It was produced using Landsat ETM+ and ASTER satellite imagery and vertical aerial photography, supplemented by Google Earth™ imagery and field-checking. Eleven landform types were mapped: moraine ridges, subdued moraine topography, kettle-kame topography, glacial lineations, irregular and regular hummocky terrain, irregular dissected ridges, eskers, meltwater channels, former shorelines and outwash plains. The map reveals three important characteristics of the glacial geomorphology. First, the geomorphic systems are largely dominated by landforms associated with meltwater (channels, outwash plains and kettle-kame topography). Second, there is a difference in the nature of landforms associated with the northern three ice lobes, where limits are generally marked by numerous clear moraine ridges, compared to those to the south, where hummocky terrain and drift limits prevail. Finally, cross-cutting landforms offer evidence of multiple advances, in places, which has implications for the timing of limit deposition, and thus for the design and interpretation of a dating programme.
DOI: 10.6084/m9.figshare.963470.v3
title: A glacial geomorphological map of the southernmost ice lobes of Patagonia: the Bahía Inútil – San Sebastián, Magellan, Otway, Skyring and Río Gallegos lobes

description: This paper presents a glacial geomorphological map of the landforms created by five large ice lobes that extended eastwards from the southernmost reaches of the Patagonian Ice Sheet during the Quaternary period. The study is focussed on Tierra del Fuego, but also updates previous mapping of the Skyring and Otway lobes, and the resulting level of detail and extent is a significant advance on previous work in the region. The map has been created as the necessary precursor for an improved understanding of the glacial history of the region, and to underpin a programme of dating glacial limits in the region. It was produced using Landsat ETM+ and ASTER satellite imagery and vertical aerial photography, supplemented by Google Earth™ imagery and field-checking. Eleven landform types were mapped: moraine ridges, subdued moraine topography, kettle-kame topography, glacial lineations, irregular and regular hummocky terrain, irregular dissected ridges, eskers, meltwater channels, former shorelines and outwash plains. The map reveals three important characteristics of the glacial geomorphology. First, the geomorphic systems are largely dominated by landforms associated with meltwater (channels, outwash plains and kettle-kame topography). Second, there is a difference in the nature of landforms associated with the northern three ice lobes, where limits are generally marked by numerous clear moraine ridges, compared to those to the south, where hummocky terrain and drift limits prevail. Finally, cross-cutting landforms offer evidence of multiple advances, in places, which has implications for the timing of limit deposition, and thus for the design and interpretation of a dating programme.
DOI: 10.6084/m9.figshare.963459
title: The Tatra Mountains during the Last Glacial Maximum

description: The Tatra Mountains extend along the border between Slovakia and Poland in the Western Carpathians. It is the highest and formerly one of the most glaciated massifs in the entire Carpathian mountain chain. We present a paleoglaciological map of the Tatra Mts. and its foreland (ca. 1270 km<sup>2</sup>) for the Last Glacial Maximum (LGM) at the scale 1:50 000. We re-evaluate geomorphological evidence for all Tatra glacial systems identified in the literature based on new field mapping and remote sensing data analysis. Utilizing geographic information systems (GIS) and 10 m resolution digital elevation model (DEM) as a base topography, we have reconstructed, for the first time, the detailed extent and surface geometry of all Tatra LGM glaciers (55 glacier systems, total area ca. 280 km<sup>2</sup>) based on the distribution of glacial erosional and depositional landforms. Our research results confirm stronger glaciation on the southern slopes of the Tatras due to local topography. We also conclude that distinct morainic amphitheaters, which predominate on the southern side of the highest, eastern part of the Tatras, were formed by debris-covered glaciers.
DOI: 10.6084/m9.figshare.963459.v1
title: The Tatra Mountains during the Last Glacial Maximum

description: The Tatra Mountains extend along the border between Slovakia and Poland in the Western Carpathians. It is the highest and formerly one of the most glaciated massifs in the entire Carpathian mountain chain. We present a paleoglaciological map of the Tatra Mts. and its foreland (ca. 1270 km<sup>2</sup>) for the Last Glacial Maximum (LGM) at the scale 1:50 000. We re-evaluate geomorphological evidence for all Tatra glacial systems identified in the literature based on new field mapping and remote sensing data analysis. Utilizing geographic information systems (GIS) and 10 m resolution digital elevation model (DEM) as a base topography, we have reconstructed, for the first time, the detailed extent and surface geometry of all Tatra LGM glaciers (55 glacier systems, total area ca. 280 km<sup>2</sup>) based on the distribution of glacial erosional and depositional landforms. Our research results confirm stronger glaciation on the southern slopes of the Tatras due to local topography. We also conclude that distinct morainic amphitheaters, which predominate on the southern side of the highest, eastern part of the Tatras, were formed by debris-covered glaciers.
DOI: 10.6084/m9.figshare.963459.v2
title: The Tatra Mountains during the Last Glacial Maximum

description: The Tatra Mountains extend along the border between Slovakia and Poland in the Western Carpathians. It is the highest and formerly one of the most glaciated massifs in the entire Carpathian mountain chain. We present a paleoglaciological map of the Tatra Mts. and its foreland (ca. 1270 km<sup>2</sup>) for the Last Glacial Maximum (LGM) at the scale 1:50 000. We re-evaluate geomorphological evidence for all Tatra glacial systems identified in the literature based on new field mapping and remote sensing data analysis. Utilizing geographic information systems (GIS) and 10 m resolution digital elevation model (DEM) as a base topography, we have reconstructed, for the first time, the detailed extent and surface geometry of all Tatra LGM glaciers (55 glacier systems, total area ca. 280 km<sup>2</sup>) based on the distribution of glacial erosional and depositional landforms. Our research results confirm stronger glaciation on the southern slopes of the Tatras due to local topography. We also conclude that distinct morainic amphitheaters, which predominate on the southern side of the highest, eastern part of the Tatras, were formed by debris-covered glaciers.
DOI: 10.6084/m9.figshare.963459.v3
title: The Tatra Mountains during the Last Glacial Maximum

description: The Tatra Mountains extend along the border between Slovakia and Poland in the Western Carpathians. It is the highest and formerly one of the most glaciated massifs in the entire Carpathian mountain chain. We present a paleoglaciological map of the Tatra Mts. and its foreland (ca. 1270 km<sup>2</sup>) for the Last Glacial Maximum (LGM) at the scale 1:50 000. We re-evaluate geomorphological evidence for all Tatra glacial systems identified in the literature based on new field mapping and remote sensing data analysis. Utilizing geographic information systems (GIS) and 10 m resolution digital elevation model (DEM) as a base topography, we have reconstructed, for the first time, the detailed extent and surface geometry of all Tatra LGM glaciers (55 glacier systems, total area ca. 280 km<sup>2</sup>) based on the distribution of glacial erosional and depositional landforms. Our research results confirm stronger glaciation on the southern slopes of the Tatras due to local topography. We also conclude that distinct morainic amphitheaters, which predominate on the southern side of the highest, eastern part of the Tatras, were formed by debris-covered glaciers.
DOI: 10.6084/m9.figshare.963459.v5
title: The Tatra Mountains during the Last Glacial Maximum

description: The Tatra Mountains extend along the border between Slovakia and Poland in the Western Carpathians. It is the highest and formerly one of the most glaciated massifs in the entire Carpathian mountain chain. We present a paleoglaciological map of the Tatra Mts. and its foreland (ca. 1270 km<sup>2</sup>) for the Last Glacial Maximum (LGM) at the scale 1:50 000. We re-evaluate geomorphological evidence for all Tatra glacial systems identified in the literature based on new field mapping and remote sensing data analysis. Utilizing geographic information systems (GIS) and 10 m resolution digital elevation model (DEM) as a base topography, we have reconstructed, for the first time, the detailed extent and surface geometry of all Tatra LGM glaciers (55 glacier systems, total area ca. 280 km<sup>2</sup>) based on the distribution of glacial erosional and depositional landforms. Our research results confirm stronger glaciation on the southern slopes of the Tatras due to local topography. We also conclude that distinct morainic amphitheaters, which predominate on the southern side of the highest, eastern part of the Tatras, were formed by debris-covered glaciers.
DOI: 10.6084/m9.figshare.963459.v4
title: The Tatra Mountains during the Last Glacial Maximum

description: The Tatra Mountains extend along the border between Slovakia and Poland in the Western Carpathians. It is the highest and formerly one of the most glaciated massifs in the entire Carpathian mountain chain. We present a paleoglaciological map of the Tatra Mts. and its foreland (ca. 1270 km<sup>2</sup>) for the Last Glacial Maximum (LGM) at the scale 1:50 000. We re-evaluate geomorphological evidence for all Tatra glacial systems identified in the literature based on new field mapping and remote sensing data analysis. Utilizing geographic information systems (GIS) and 10 m resolution digital elevation model (DEM) as a base topography, we have reconstructed, for the first time, the detailed extent and surface geometry of all Tatra LGM glaciers (55 glacier systems, total area ca. 280 km<sup>2</sup>) based on the distribution of glacial erosional and depositional landforms. Our research results confirm stronger glaciation on the southern slopes of the Tatras due to local topography. We also conclude that distinct morainic amphitheaters, which predominate on the southern side of the highest, eastern part of the Tatras, were formed by debris-covered glaciers.
DOI: 10.6084/m9.figshare.963443
title: Mythical creatures of Europe

description: The map of Mythical Creatures of Europe represents information on 213 mythical creatures of 68 types that are described in folk-lore of European countries. It is compiled from data collected by MSc students in Cartography at Vilnius University in Lithuania in 2011, totalling approximately 1200 man hours. Among numerous sources of information on mythical creatures, this map and database are unique as they contain geographic references and information on the living environment of so many creatures. Only the most reliable information has been included in the informative and visually attractive wall map. The project included planning, analysis of feasibility, data collection, verification, generalisation and filtering, classification of information on mythical creatures, building the GIS database, analysis of data, and cartographic visualisation. The map described in this paper was finalised in 2012 and designed with special focus on attractiveness for the user. The reference scale of the printed map is 1:7,200,000 and contains an inset of Greece at scale 1:4,000,000. The size of the map image is 62.5 × 83 cm. It is complemented by textual descriptions of each of 213 creatures. The relational database and exhaustive project documentation are available for further updates and development.
DOI: 10.6084/m9.figshare.963441
title: The geomorphologic and pedo-morphologic maps of Skhirat (Feriana, Tunisia) at the 1:50,000 scale

description: Land planning and land restoration in drylands affected by desertification require a good understanding of the active geomorphic processes, their intensities and spatial patterns. Traditional Soil and Land Suitability maps do not incorporate this information and may be partially inadequate in that regard, because they necessarily give a ‘static’ representation of the land. The geomorphology of the study area (Feriana district, Central Western Tunisia) is complex, including relict landforms, such as Quaternary pediments, fossil sand dunes, and the evidence of ancient endorheic systems. On the other hand the area is characterized by active and intense geomorphic processes: water and wind erosion, aeolian deposition, and localized present-day endorheism accompanied by water logging and salt accumulation processes. The soils reflect the imprints of multiple past and present pedogenic and geomorphic processes. In this study a Geomorphologic and a Pedo-morphologic Map were produced to provide the local decision makers with cartographic tools to best plan land use options and land restoration. The Maps were drawn at the 1:50,000 scale based on detailed photo-interpretation and on dedicated field surveys.
DOI: 10.6084/m9.figshare.963441.v1
title: The geomorphologic and pedo-morphologic maps of Skhirat (Feriana, Tunisia) at the 1:50,000 scale

description: Land planning and land restoration in drylands affected by desertification require a good understanding of the active geomorphic processes, their intensities and spatial patterns. Traditional Soil and Land Suitability maps do not incorporate this information and may be partially inadequate in that regard, because they necessarily give a ‘static’ representation of the land. The geomorphology of the study area (Feriana district, Central Western Tunisia) is complex, including relict landforms, such as Quaternary pediments, fossil sand dunes, and the evidence of ancient endorheic systems. On the other hand the area is characterized by active and intense geomorphic processes: water and wind erosion, aeolian deposition, and localized present-day endorheism accompanied by water logging and salt accumulation processes. The soils reflect the imprints of multiple past and present pedogenic and geomorphic processes. In this study a Geomorphologic and a Pedo-morphologic Map were produced to provide the local decision makers with cartographic tools to best plan land use options and land restoration. The Maps were drawn at the 1:50,000 scale based on detailed photo-interpretation and on dedicated field surveys.
DOI: 10.6084/m9.figshare.963422
title: Ecological factors driving plant species diversity in the South Aegean Volcanic Arc and other central Aegean islands

description: <b><i>Background:</i></b> The South Aegean Volcanic Arc (SAVA), one of the most notable geological structures of the Mediterranean Sea, is floristically well known. Nevertheless, the factors that contribute to shaping the plant species richness of the SAVA remain unclear.<b><i>Aims:</i></b> To investigate the factors that affect plant species richness and identify plant diversity hotspots in the SAVA and other central Aegean islands.<b><i>Methods:</i></b> We used stepwise multiple regression to test the relationship between a number of environmental factors and plant species richness in the SAVA, as well as the residuals from the species–area linear regressions of native, Greek and Cycladian endemic taxa as indicators of relative species richness.<b><i>Results:</i></b> The area was confirmed to be the most powerful single explanatory variable of island species richness, while geodiversity, maximum elevation and mean annual precipitation explained a large proportion of variance for almost all the species richness measures. Anafi, Amorgos and Folegandros were found to be endemic plant diversity hotspots.<b><i>Conclusions:</i></b> We have demonstrated that geodiversity is an important factor in shaping plant species diversity in the Cyclades, while mean annual precipitation, human population density and maximum elevation were significant predictors of the Greek endemics present in the Cyclades. Finally, Anafi was found to be a plant diversity hotspot in the South Aegean Sea.