cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14457/tu.the.2024.584
title: Liquid phase exfoliation of tungsten diselenide nanosheets and their electrochemical properties

description: The electrochemical performance of two-dimensional (2D) materials, particularly transition metal dichalcogenides (TMDs), is governed by their structural and chemical properties. Large-scale, high-yield production methods must ensure both nanosheet quality and electrochemical suitability for practical applications in energy storage, electrocatalysis, and electrochemical adsorption. This thesis investigates liquid-phase exfoliation as a scalable synthesis method, focusing on optimising solvent choice and exfoliation power to enhance structural integrity and functionality of TMD nanosheets. Given the limitations of graphene in electrochemical applications, alternative materials such as MoS2, MoSe2, and WSe2 are explored. A comparative study of these TMDs highlights distinct caesium ion removal mechanisms: MoS2 primarily stores charge via pseudocapacitive intercalation (0.78 C g-1, with 2.6% from EDL formation), MoSe2 relies on electric double-layer (EDL) formation (60% of 0.54 C g-1), while WSe2 exhibits a hybrid behaviour (0.77 C g-1, with 14% from EDL). These findings support their potential as efficient and tuneable materials for electrochemical separation processes. Among them, WSe2 was selected for in-depth study due to its balanced charge storage and promising electrocatalytic properties. Structural characterisation revealed that increasing exfoliation power (90.4 to 814 W) led to higher selenium vacancy formation, increased oxide content (44.3 to 53.9%), which in turn influenced HER and OER performance. High-power exfoliated WSe2 showed diminished HER activity due to W–Se bond loss but enhanced OER activity, especially in alkaline media. Proton interaction with selenium vacancies also enhanced capacitive behaviour under acidic conditions. Recognising the oxidative effects of N-methyl-2-pyrrolidone (NMP), a greener solvent mixture of isopropyl alcohol and deionised water (IPA/DI) was employed, reducing oxidation and preserving WSe2 structure. Over time, IPA/DI-exfoliated WSe2 nanosheets exhibited superior HER performance, achieving overpotentials as low as -0.206 V vs. RHE at -10 mA cm-2, comparable to platinum. This study provides practical guidance for tuning WSe2 nanosheet properties via exfoliation and storage conditions, advancing their application in electrocatalysis and environmental remediation.
DOI: 10.14457/tu.the.2024.585
title: Digital twins enhanced 2D vision-based bin-picking with monocular depth estimation

description: Bin picking is a fundamental task in industrial automation, where robots are required to identify, locate, and grasp objects from cluttered environments. Accurate pose estimation is crucial in this process, as it directly impacts on the robot’s ability to execute precise and successful grasps. While 3D vision systems offer high precision, their high cost limits their accessibility in budget-constrained environments. To overcome this challenge, this paper proposes a 2D vision-based approach that utilizes RGB cameras for pose estimation in bin-picking applications. The proposed method integrates deep learning techniques, combining Yolov8 Instance Segmentation for object detection and segmentation with MiDaS, a multi-scale network for monocular depth estimation. This enables effective depth estimation without the need for expensive 3D sensors. The system estimates the relative depth between the camera and objects, while the object’s distance from the camera is computed using a metric based on its width and focal length. Furthermore, digital twins are introduced to simulate and optimize the bin-picking system. The digital twins represent the physical robotic environment, allowing for real-time simulations of grasping strategies, collision avoidance, and trajectory planning. By mirroring real-world conditions, it enables precise calibration of grasping parameters, reducing trial-and-error in physical experiments. This integration enhances the system’s efficiency, ensuring accurate and reliable pickup point estimation. Experimental results demonstrate that the proposed approach successfully predicts pickup points with high reliability, making it well-suited for applications where minor positional deviations are acceptable. The combination of 2D vision-based pose estimation and digital twins simulation provides a cost-effective and efficient solution for robotic bin picking, bridging the gap between affordability and precision.
DOI: 10.14457/tu.the.2024.586
title: Multimodal biometric verification

description: This thesis presents a series of improvements to biometric verification systems focused on iris and periocular features, addressing key challenges like false positives and false negatives. First, we propose a segmentation framework that integrates the Segment Anything Model (SAM) with traditional Hough transform and active contour methods, improving segmentation accuracy. A novel initialization method for SAM and the use of full Hamming vectors in classification further enhance performance. Second, we extend traditional matching by combining Hamming distance, Jaccard distance, and Pearson correlation, and introduce a variance-based enrollment screening to filter out low-quality samples. Finally, we propose a score fusion approach that combines iris and periocular features, using an autoencoder and support vector classifier to boost verification accuracy. The periocular region, which includes the area around the eye such as eyelids, lashes, and skin texture, is less affected by occlusions and lighting variations than the iris. This makes it a reliable alternative, especially when the iris is partially visible or degraded. By integrating periocular cues with iris data, the system becomes more robust to challenging conditions.Evaluated on the CASIA-IrisV2 dataset, our combined methods significantly improve accuracy, F1-score, and recall, while reducing false negatives and enhancing robustness across varied input qualities.
DOI: 10.14457/tu.the.2019.1676
title: Semi-unsupervised learning with term weighting for text clustering

description: In distance-based (similarity-based) constrained clustering, there have been various approaches on how to define distance (similarity) between objects in order to guide similar objects to be grouped together and dissimilar objects to be separated from each other. This dissertation presents a framework of similarity-based constrained clustering, where statistics extracted from a small number of cue instances with their known classes are used as the term weighting scheme to guide the clustering process. In the framework, besides two well-known weightings (term frequency and inverse document frequency), three additional statistics, i.e., the statistics for characterizing the whole collection (in-collection), those for characterizing a class (intra-class), and those for contrasting classes (inter-class), are used for emphasizing or not emphasizing the term. The weight of a term is the multiplication of these in-collection, intra-class, and inter-class statistics, where a positive (or negative) exponent is given to each term with weighting to promote (or demote) the effect of the term on grouping (clustering). In this research, two alternative term weightings named (1) deviation-based and (2) entropy-based distributions are compared. For more the evaluation the impact of term weighting, the experiment exploits the statistics from the comparison of distribution-based term weighting of user-intention, the varied training set sizes, and the varied number of clusters. The performance is evaluated using five text datasets are used; drug information, 20newsgroup, amazon comments, webkb, and Thai reform text collections. The proposed method is evaluated on three groups of criteria, i.e., class-based measures, clustering-based measures, and similarity-based measures.
DOI: 10.15468/dl.k2js6d
title: Occurrence Download

description: A dataset containing 2592699 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Pl@ntNet observations"
 ]
}

 The dataset includes 2592699 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038753-250827131500795/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.tqqrvx
title: Occurrence Download

description: A dataset containing 795082 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Salmo salar)",
 "BasisOfRecord is one of (Specimen, Literature Occurrence, Human Observation, Observation)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1991",
 "Year is less than or equal to 2025"
 ]
}

 The dataset includes 795082 records from 209 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038749-250827131500795/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.mzwsue
title: Occurrence Download

description: A dataset containing 2592699 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Pl@ntNet observations"
 ]
}

 The dataset includes 2592699 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038759-250827131500795/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.bxf6va
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Leonurus sibiricus",
 "Country is Australia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038790-250827131500795/datasets/export for details.
DOI: 10.15468/dl.bdjgs2
title: Occurrence Download

description: A dataset containing 9630 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Aristida purpurea"
 ]
}

 The dataset includes 9630 records from 221 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038789-250827131500795/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.7p3z2n
title: Occurrence Download

description: A dataset containing 603706 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Salix caprea"
 ]
}

 The dataset includes 603706 records from 2561 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038682-250827131500795/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ypk8t4
title: Occurrence Download

description: A dataset containing 5 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Xylocalyx recurvus S.Carter"
 ]
}

 The dataset includes 5 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0138558-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.34rvs9
title: Occurrence Download

description: A dataset containing 12747 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Merganetta armata Gould, 1842"
 ]
}

 The dataset includes 12747 records from 77 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0120730-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ufzfy9
title: Occurrence Download

description: A dataset containing 30 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Chironia gratissima S.Moore"
 ]
}

 The dataset includes 30 records from 11 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090529-240229165702484/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.234srj
title: Occurrence Download

description: A dataset containing 2230 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Guatemala",
 "DatasetKey is Natural History Museum (London) Collection Specimens",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 2230 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016380-181003121212138/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.bbkpvy
title: Occurrence Download

description: A dataset containing 15207 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is China",
 "TaxonKey is Aegypius monachus (Linnaeus, 1766)",
 "Year 2013-2023"
 ]
}

 The dataset includes 15207 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090517-240229165702484/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.d2r9n8
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Cosmocampus darrosanus (Dawson & Randall, 1975)"
 ]
}

 The dataset includes 8 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0059226-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.xny9mp
title: Occurrence Download

description: A dataset containing 5771 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Segunda caracterización biológica de plantas del proyecto \"Incorporación de la Biodiversidad en el sector cafetero en Colombia\""
 ]
}

 The dataset includes 5771 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016380-181108115102211/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.yf9mbd
title: Occurrence Download

description: A dataset containing 29 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Acianthera prostrata (Lindl.) A.Doucette"
 ]
}

 The dataset includes 29 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0138560-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5t3btq
title: Occurrence Download

description: A dataset containing 1343 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Polygala tenuifolia Willd.",
 "Year is greater than or equal to 1900",
 "HasCoordinate is true"
 ]
}

 The dataset includes 1343 records from 28 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0020514-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.s6rrx5
title: Occurrence Download

description: A dataset containing 4253 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Pecari tajacu (Linnaeus, 1758)",
 "HasCoordinate is True",
 "Country is United States of America",
 "Year is greater than or equal to 2000",
 "Year is less than or equal to 2024",
 "Month is greater than or equal to January",
 "Month is less than or equal to December",
 "HasGeospatialIssue is False"
 ]
}

 The dataset includes 4253 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0138557-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.dxpowl
title: Occurrence Download

description: A dataset containing 226 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Eulaema peruviana (Friese, 1903)"
 ]
}

 The dataset includes 226 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016381-190415153152247/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.fqwvst
title: Occurrence Download

description: A dataset containing 4 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Specimen",
 "Country is one of (Ethiopia)",
 "TaxonKey is Habenaria cirrhata (Lindl.) Rchb.f."
 ]
}

 The dataset includes 4 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0107003-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5q9fk4
title: Occurrence Download

description: A dataset containing 114 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Ceropegia rhynchantha Schltr."
 ]
}

 The dataset includes 114 records from 26 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090546-240229165702484/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.hsx2ux
title: Occurrence Download

description: A dataset listing the 5 species recorded in GBIF matching the query:
{
 "and" : [
 "DatasetKey is Quaid-i-Azam University Herbarium",
 "Issue is Taxon match fuzzy"
 ]
}

 The dataset's 5 records were derived from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0098014-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.xa3yyj
title: Occurrence Download

description: A dataset containing 801 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "TaxonKey is Phellodendron amurense Rupr.",
 "TaxonKey is Phelsuma dubia (Boettger, 1881)",
 "TaxonKey is Phelsuma grandis Gray, 1870"
 ]
 },
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 801 records from 62 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016382-180508205500799/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.887dgy
title: Occurrence Download

description: A dataset containing 1246 species occurrences available in GBIF matching the query:
{
 "and" : [
 "OccurrenceStatus is Present",
 {
 "or" : [
 "TaxonKey is Andinobates daleswansoni (Rueda-Almonacid, Rada, Sánchez-Pacheco, Velásquez-Álvarez & Quevedo-Gil, 2006)",
 "TaxonKey is Andinobates opisthomelas (Boulenger, 1899)",
 "TaxonKey is Andinobates virolinensis (Ruiz-Carranza & Ramírez-Pinilla, 1992)",
 "TaxonKey is Andinobates cassidyhornae Amézquita, Márquez, Mejía-Vargas, Kahn, Suárez & Mazariegos, 2013",
 "TaxonKey is Andinobates tolimensis (Bernal-Bautista, Luna-Mora, Gallego & Quevedo-Gil, 2007)",
 "TaxonKey is Andinobates bombetes (Myers & Daly, 1980)",
 "TaxonKey is Andinobates dorisswansonae (Rueda-Almonacid, Rada, Sánchez-Pacheco, Velásquez-Álvarez & Quevedo-Gil, 2006)"
 ]
 }
 ]
}

 The dataset includes 1246 records from 42 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0223076-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.wqvmrt
title: Occurrence Download

description: A dataset containing 44180 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Carex chordorrhiza L.f."
 ]
}

 The dataset includes 44180 records from 301 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090537-240229165702484/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.esfn8v
title: Occurrence Download

description: A dataset containing 10 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Quiina glazovii Engl."
 ]
}

 The dataset includes 10 records from 8 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016382-181003121212138/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.gq8bj7
title: Occurrence Download

description: A dataset containing 331 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Arisaema erubescens (Wall.) Schott"
 ]
}

 The dataset includes 331 records from 25 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001900-210819072339941/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5cgure
title: Occurrence Download

description: A dataset containing 4 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Centaurea golestanica Akhani & Wagenitz"
 ]
}

 The dataset includes 4 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0090468-240229165702484/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vufvq8
title: Occurrence Download

description: A dataset containing 688 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Hylotrupes bajulus (Linnaeus, 1758)",
 {
 "not" : {
 "DatasetKey" : [
 "is Global database of alien macrofungi"
 ]
 }
 },
 {
 "or" : [
 "Country is Switzerland",
 "Country is Switzerland"
 ]
 }
 ]
}

 The dataset includes 688 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0400443-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ky3k6f
title: Occurrence Download

description: A dataset containing 574 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Viola nagasawae Makino & Hayata"
 ]
}

 The dataset includes 574 records from 22 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0138559-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.964ua8
title: Occurrence Download

description: A dataset containing 31102 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "BasisOfRecord is Observation",
 "BasisOfRecord is Machine Observation",
 "BasisOfRecord is Human Observation",
 "BasisOfRecord is Material sample",
 "BasisOfRecord is Literature Occurrence",
 "BasisOfRecord is Living Specimen"
 ]
 },
 "Country is Mexico",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Corvus corax Linnaeus, 1758",
 "Year 1980-2020"
 ]
}

 The dataset includes 31102 records from 27 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0116088-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.