cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Viscous evolution of a massive disk surrounding stellar-mass black holes in full general relativity
Creators: name: Fujibayashi, Sho
name: Shibata, Masaru
name: Wanajo, Shinya
name: Kiuchi, Kenta
name: Kyutoku, Koutarou
name: Sekiguchi, Yuichiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Long-term viscous neutrino-radiation hydrodynamics simulations in full general relativity are performed for a massive disk surrounding spinning stellar-mass black holes with mass $M_{\rm BH}=4$, $6$, and $10M_\odot$ and initial dimensionless spin $χ\approx 0.8$. The initial disk is chosen to have mass $M_{\rm disk}\approx 0.1$ or $3M_\odot$ as plausible models of the remnants for the merger of black hole-neutron star binaries or the stellar core collapse from a rapidly rotating progenitor, respectively. For $M_{\rm disk} \approx 0.1M_\odot$ with the outer disk edge initially located at $r_{\rm out} \sim 200$ km, we find that $15$%-$20$% of $M_{\rm disk}$ is ejected and the average electron fraction of the ejecta is $\langle Y_e \rangle = 0.30$-$0.35$ as found in the previous study. For $M_{\rm disk} \approx 3M_\odot$, we find that $\approx 10$%-$20$% of $M_{\rm disk}$ is ejected for $r_{\rm out}\approx 200$-$1000$ km. In addition, $\langle Y_e \rangle$ of the ejecta can be enhanced to be $\gtrsim 0.4$ because the electron fraction is increased significantly during the long-term viscous expansion of the disk with high neutrino luminosity until the mass ejection sets in. Our results suggest that not heavy $r$-process elements but light trans-iron elements would be synthesized in the matter ejected from a massive torus surrounding stellar-mass black holes. We also find that the outcomes of the viscous evolution for the high-mass disk case is composed of a rapidly spinning black hole surrounded by a torus with a narrow funnel, which appears to be suitable for generating gamma-ray bursts.
description: 25 pages, 17 figures
การประยุกต์เครื่องอุ่นและแสดงอาหารด้วยรังสีอินฟราเรดเพื่อ ความปลอดภัยทางอาหารของผลิตภัณฑ์ชุมชน กรณีศึกษา : ข้าวหลาม
Creators: name: จันทร์เพ็ญ ตั้งจิตรเจริญกุล
name: รจนา ประไพนพ
Publisher: name: กองบริหารการวิจัย มหาวิทยาลัยธรรมศาสตร์
Year: 2558
Subjects: ความปลอดภัยด้านอาหาร, ผลิตภัณฑ์ชุมชน, ข้าวหลาม, เครื่องอุ่นและแสดงอาหาร

description: 4, 23, วารสารวิทยาศาสตร์และเทคโนโลยี
Explainable Adversarial Attacks on Coarse-to-Fine Classifiers
Creators: name: Heidarizadeh, Akram
name: Hatfield, Connor
name: Lazzarotto, Lorenzo
name: Cai, HanQin
name: Atia, George
Publisher: name: arXiv
Year: 2025
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Traditional adversarial attacks typically aim to alter the predicted labels of input images by generating perturbations that are imperceptible to the human eye. However, these approaches often lack explainability. Moreover, most existing work on adversarial attacks focuses on single-stage classifiers, but multi-stage classifiers are largely unexplored. In this paper, we introduce instance-based adversarial attacks for multi-stage classifiers, leveraging Layer-wise Relevance Propagation (LRP), which assigns relevance scores to pixels based on their influence on classification outcomes. Our approach generates explainable adversarial perturbations by utilizing LRP to identify and target key features critical for both coarse and fine-grained classifications. Unlike conventional attacks, our method not only induces misclassification but also enhances the interpretability of the model's behavior across classification stages, as demonstrated by experimental results.
description: ICASSP 2025
ต้นแบบประสิทธิภาพการบริหารจัดการของอุตสาหกรรม ผลิตชิ้นส่วนไฟฟ้าและอิเล็กทรอนิกส์ในประเทศไทย
Creators: name: ยุวัฒน์ วุฒิเมธี
name: วันชัย ไพจิตโรจนา
name: สมบูรณ์ คงทองวัฒนา
Publisher: name: กองบริหารการวิจัย มหาวิทยาลัยธรรมศาสตร์
Year: 2558
Subjects: ประสิทธิภาพ, การบริหารจัดการ, อุตสาหกรรมผลิตชิ้นส่วนไฟฟ้าและอิเล็กทรอนิกส์

description: 4, 23, วารสารวิทยาศาสตร์และเทคโนโลยี
Η Γενεαλογία της Δημοκρατίας στον Alexis de Tocqueville:
Creators: name: Κουσαλίδης, Πολυχρόνης Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Tocqueville
Γενεαλογία
Δημοκρατία
Genealogy
Democracy

description: Στην παρούσα διπλωματική εργασία μελετάται ο Γάλλος ιστορικός και πολιτικός Alexis de Toqcueville και συγκεκριμένα η γενεαλογία της δημοκρατίας σύμφωνα με αυτόν. Περισσότερο αναλυτικά γίνεται μία προσπάθεια αποτύπωσης των βασικών εννοιών, στάσεων και θεωριών του ιστορικού σχετικά με την έννοια της δημοκρατίας και των μηχανισμών που διέπουν μια δημοκρατική κοινωνία όπως προκύπτουν από τα κείμενα του ίδιου. Βασικό αντικείμενο μελέτης αποτελεί το μεγάλο έργο του Toqcueville Η Δημοκρατία στην Αμερική ένα μέρος του οποίου περιλαμβάνεται συνοπτικά στην εργασία, με σκοπό να δικαιολογηθούν, να αξιολογηθούν και να κατανοηθούν τα όσα αναφέρονται σχετικά με το έργο αυτό από το οποίο προκύπτει και η γενεαλογία της υπό εξέταση έννοιας, δηλαδή της δημοκρατίας. Επιπρόσθετα, γίνονται σημαντικές αναφορές σε έννοιες και θεσμούς, όπως είναι η θρησκεία ή φτώχεια, που σχετίζονται με τις δημοκρατικές κοινωνίες και μη και τις οποίες πραγματεύεται ο ίδιος ο Toqcueville στο βιβλίο που αναφέρθηκε αλλά και σε άλλα. Ο Alexis de Toqcueville αναφέρεται συχνά στη διεθνή βιβλιογραφία ως φιλόσοφος, πολιτικός, στοχαστής, ιστορικός, ορισμοί για τους οποίους επιχειρείται να κατανοηθεί μέσα από την παρούσα εργασία ο λόγος που έχουν αποδοθεί στον Γάλλο ιστορικό. Για το σκοπό αυτό εμφανίζονται σχετικές αναφορές που αφορούν θεωρίες και απόψεις του ίδιου, ενώ παράλληλα σχετίζονται με τον κεντρικό άξονα της διπλωματικής που είναι η έννοια της δημοκρατίας και η γενεαλογία αυτής.
description: In the present diploma thesis is studying the French historian and politicial Alexis de Toqcueville and specifically the genealogy of democracy according to him. More analytically is given a try to identify the basic concepts, points and theories of the historian as concerns the meaning of democracy and the mechanisms that take place in a democratic society as they arise from his writings. The basic issue that is studied is the big work of Toqcueville his book Democracy in America a part of its is diven in brief in this thesis, in order to evaluate and to understand everything that is referred to his book from its arises and the genealogy of the concept that is being studied, the democracy. Additionally, there are important references in meanings and concepts that have to do with the religion or the poverty, that are related with the democratic societies that Toqcueville examines in the book that has been mentioned and also in others. Alexis de Toqcueville often referred in the international bibliography as philosopher, politician, thinker, historian. Through this paper is given a try to understand the reason why all these definitions are given to the French historian. For this purpose appear relevant references that are related to his theories and aspects, while there are associated to the central issue of this paper which is the meaning of democracy and its genealogy.
Τα σχολικά εγχειρίδια του μαθήματος της ιστορίας στην πρωτοβάθμια και δευτεροβάθμια εκπαίδευση κατά την περίοδο 1967-1974:
Creators: name: Γάσπαρης, Χρήστος Σωτηρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: διδακτική μαθήματος ιστορίας
περίοδος 1967-1974
ελευθερία έκφρασης
history lesson textbooks
chronological period from 1967 till 1974
freedom of expression

description: Με την ανά χείρας ερευνητική προσπάθεια επιχειρείται να αναδειχθεί μια πολύ σημαντική πτυχή στην όλη ιστορία της ελληνικής εκπαίδευσης, που δεν είναι άλλη από την μελέτη των σχολικών εγχειριδίων του μαθήματος της Ιστορίας στα σχολεία της Πρωτοβάθμιας και Δευτεροβάθμιας Εκπαίδευσης κατά τα έτη 1967 – 1974. Η συστηματική καταγραφή των πρακτικών της κεντρικής διοίκησης σχετικά με την αναστολή ή μη των ελευθεριών τόσο των μαθητών όσο και των καθηγητών κατά την υπό ανάλυση περίοδο αποτέλεσε το κύριο μέλημά μας. Το τεκμαρτό συμπέρασμα είναι ότι στο καθαρά εκπαιδευτικό έργο δεν υπήρξαν ακρότητες και σε γενικές γραμμές συνεχίστηκε αδιάκοπα το αναλυτικό πρόγραμμα που είχε θεσπιστεί ακόμη και προ του 1967. Οι αλλαγές στα σχολικά εγχειρίδια ήταν ήσσονος σημασίας και το μόνο μελανό σημείο δυνάμεθα να υποστηρίξουμε είναι ότι σε μερικά σημεία παρατηρούντο ορισμένες ασάφειες και ελλείψεις. Οι ίδιοι καθηγητές που είχαν αναλάβει τη συγγραφή και τελική επεξεργασία των κειμένων των σχολικών εγχειριδίων της Ιστορίας κατά την περίοδο αμέσως προ του 1967 συνέχισαν και μετά κατά την περίοδο μετά το 1967 και μέχρι το 1974 και αυτό εξασφάλισε και μια νοητική συνέχεια στο όλο εγχείρημα της διδασκαλίας του μαθήματος. Κατά τα λοιπά αυτό που έλειπε σαφώς ήταν η δυνατότητα έκφρασης αντίθετων προς την κεντρική γραμμή θέσεων καθώς αυτό συνεπάγετο αυστηρές κυρώσεις για τους εκπαιδευτικούς που το έπρατταν.
description: Under the current thesis we are trying to illuminate a crucial period for the Hellenic education between the years 1967 and 1974. For systematic reasons we have chosen to study the changes that took place at the textbooks of History that were being taught at Primary and Secondary Education. Practices on behalf of central administration enforced by the Ministry of Education were presented and it has been shown that no major changes have taken place at the curriculum of History textbooks even after the year 1967. The same writers that were responsible for the textbooks at the pre 1967 period continued to be responsible for the textbooks of History also after 1967. This evolution has helped the maintenance of continuity at the contents of History textbooks and students were not confused. The only negative evolution at the period between 1967 and 1974 were certainly the limitations posed on behalf of central administration to all teachers that might wanted to express a strong opposition to the ideals of the central administration. Despite the existence of limitations if teachers did express strong opposition thoughts during the lessons they suffered severe sanctions.
Accretion of gas onto nearby spiral galaxies
Creators: name: Fraternali, Filippo
name: Binney, James
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present evidence for cosmological gas accretion onto spiral galaxies in the local universe. The accretion is seen through its effects on the dynamics of the extra-planar neutral gas. The accretion rates that we estimate for two nearby spiral galaxies are of the order of their star formation rates. Our model shows that most of the extra-planar gas is produced by supernova feedback (galactic fountain) and only 10-20 % comes from accretion. The accreting material must have low specific angular momentum about the disc's spin axis, although the magnitude of the specific angular-momentum vector can be higher. We also explore the effects of a hot corona on the dynamics of the extra-planar gas and find that it is unlikely to be responsible for the observed kinematical pattern and the source of accreted gas. However, the interaction with the fountain flow should profoundly affect the hydrodynamics of the corona.
description: 11 pages, 6 figures, accepted for publication in MNRAS
Difference in chemical composition between the bright and faint red clump stars in the Milky Way bulge
Creators: name: Lim, Dongwook
name: Lee, Young-Wook
name: Koch, Andreas
name: Hong, Seungsoo
name: Johnson, Christian I.
name: Kim, Jenny J.
name: Chung, Chul
name: Mateo, Mario
name: Bailey, John I.
name: III
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The double red clump (RC) observed in color-magnitude diagrams of the Milky Way bulge is at the heart of the current debate on the structure and formation origin of the bulge. This feature can be explained by the difference between the two RCs either in distance ("X-shaped scenario") or in chemical composition ("multiple-population scenario"). Here we report our high-resolution spectroscopy for the RC and red giant branch stars in a high-latitude field (b ~ -8.5$°$) of the bulge. We find a difference in [Fe/H] between the stars in the bright and faint RC regimes, in the sense that the bright stars are enhanced in [Fe/H] with respect to the faint stars by 0.149 $\pm$ 0.036 dex. The stars on the bright RC are also enhanced in [Na/Fe] but appear to be depleted in [Al/Fe] and [O/Fe], although more observations are required to confirm the significance of these differences. Interestingly, these chemical patterns are similar to those observed among multiple stellar populations in the metal-rich bulge globular cluster Terzan 5. In addition, we find a number of Na-rich stars, which would corroborate the presence of multiple populations in the bulge. Our results support an origin of the double RC from dissolved globular clusters that harbor multiple stellar populations. Thus, our study suggests that a substantial fraction of the outer bulge stars would have originated from the assembly of such stellar systems in the early phase of the Milky Way formation.
description: 17 pages, 15 figures, accepted for publication in ApJ
Current amplification and magnetic reconnection at a 3D null point. I - Physical characteristics
Creators: name: Pontin, D. I.
name: Galsgaard, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The behaviour of magnetic perturbations of an initially potential three-dimensional equilibrium magnetic null point are investigated. The basic components which constitute a typical disturbance are taken to be rotations and shears, in line with previous work. The spine and fan of the null point (the field lines which asymptotically approach or recede from the null) are subjected to such rotational and shear perturbations, using three-dimensional magnetohydrodynamic simulations. It is found that rotations of the fan plane and about the spine lead to current sheets which are spatially diffuse in at least one direction, and form in the locations of the spine and fan. However, shearing perturbations lead to 3D-localised current sheets focused at the null point itself. In addition, rotations are associated with a growth of current parallel to the spine, driving rotational flows and a type of rotational reconnection. Shears, on the other hand, cause a current through the null which is parallel to the fan plane, and are associated with stagnation-type flows and field line reconnection across both the spine and fan. The importance of the parallel electric field, and its meaning as a reconnection rate, are discussed.
description: Accepted for publication in JGR (Space Physics)
Shadows and negative precession in non-Kerr spacetime
Creators: name: Bambhaniya, Parth
name: Dey, Dipanjan
name: Joshi, Ashok B.
name: Joshi, Pankaj S.
name: Solanki, Divyesh N.
name: Mehta, Aadarsh
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is now known that the shadow is not only the property of a black hole, it can also be cast by other compact objects like naked singularities. However, there exist some novel features of the shadow of the naked singularities which are elaborately discussed in some recent articles. In the earlier literature, it is also shown that a naked singularity may admit negative precession of bound timelike orbits which cannot be seen in Schwarzschild and Kerr black hole spacetimes. This distinguishable behavior of timelike bound orbit in the presence of the naked singularity along with the novel features of the shadow may be useful to distinguish between a black hole and a naked singularity observationally. However, in this paper, it is shown that deformed Kerr spacetime can allow negative precession of bound timelike orbits when the central singularity of that spacetime is naked. We also show that negative precession and shadow both can exist simultaneously in deformed Kerr naked singularity spacetime. Therefore, any observational evidence of negative precession of bound orbits, along with the central shadow may indicate the presence of a deformed Kerr naked singularity.
description: 13 pages, 20 figures
Ageing analysis of mesenchymal stem cells: improvement of stem cell therapies
Creators: name: Tampakis, Dimitris
Publisher: name: Loughborough University
Year: 2020
Subjects: classificationCode: 401799
subject: Mechanical engineering not elsewhere classified

description: Mesenchymal stem cells (MSCs) are attractive candidates for cell-based tissue repair owing to their properties. For most therapeutic applications, expansion of MSCs in vitro is often required in order to produce adequate numbers of cells. Moreover, cells from elderly donors are used in autologous stem cell therapies, for the treatment of many diseases. It is now known that cellular (prolonged expansion) and chronological (donor) ageing of MSCs have a negative impact on MSCs properties, causing continuous alterations in these cells. This work will focus on understanding the ageing process of MSCs. For this purpose, dental pulp stem cells (DPSCs) were isolated from 13 individual donors of various ages and expanded in cultures, until senescence occured. Firstly, the growth kinetics of these cells were studied to understand the impact of chronological and cellular ageing upon DPSCs expansion. My results suggest that the cells ceased proliferation after about 4 months in culture. It is also worth pointing out that pronounced variation in growth kinetics between the donors was observed. It was demonstrated that DPSCs derived from younger donors had better proliferation rate, generating more cells than those from older donors. Based on the results in this study, a cut off point of 23yrs old was set as ageing for DPSCs. This was followed by identification of new biomarkers or combinations of existing ones that accurately predict the ageing state of MSCs and their therapeutic potential. Study of changes in the volatile profile of hMSCs upon senescence were described for the first time. In addition, alterations in other known biomarkers of senescence were analysed and panels with the most prominent of these biomarkers were created. These panels provide a robust and high-throughput approach to precisely identify and quantify senescent cells in culture, thereby allowing the setting of the expansion limits for effective and safe MSCs therapies. Finally, the effect of various senolytic drugs on DPSCs was tested in this study. These drugs can selectively kill senescent cells. Out of the seven different drugs tested, two demonstrated a senolytic effect with an effective reduction of some of the senescent phenotypes in DPSCs population.
Μοντελοποίηση της Διαχείρισης Ανθρώπινου Δυναμικού σε Τραπεζικό Οργανισμό με τη χρήση Τεχνολογιών του Σημασιολογικού Ιστού:
Creators: name: Κοκόλη, Ελίζα Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Διαχείριση Γνώσης
Σημασιολογικός Ιστός
Οντολογίες
Protégé
Knowledge Management
Semantic Web

description: Η εποχή που ζούμε χαρακτηρίζεται ως η εποχή της πληροφορίας. Για την ευημερία λοιπόν ενός οργανισμού κρίνεται πλέον επιτακτική η ανάγκη συγκέντρωσης, επεξεργασίας και αναδιανομής αυτής της πληροφορίας με σκοπό την εύρυθμη λειτουργία του και την απόκτηση ανταγωνιστικού πλεονεκτήματος. Η διαχείριση λοιπόν της γνώσης παίζει πλέον σημαντικό ρόλο στη μελλοντική πορεία ενός οργανισμού. και διευκολύνεται με τη χρήση του Σημασιολογικού Ιστού και με τα εργαλεία που αυτός προσφέρει. Το θέμα που πραγματεύεται η παρούσα εργασία είναι η Μοντελοποίηση της Διαχείρισης Ανθρώπινου Δυναμικού σε ένα συγκεκριμένο Τραπεζικό Οργανισμό με τη χρήση Τεχνολογιών του Σημασιολογικού Ιστού.
description: The era we live is characterized as the Information Age. For the prosperity of an organization it is an urgent need to collect process and relay this information so as it will be leaded to a proper operation and gain a competitive advantage. The management of this knowledge therefore plays an important role in the organization’s future and it is facilitated by the use of Semantic Web and the tools that it offers. The main subject of this paper is the modeling of a Human Resource Management system in a particular banking organization with the use of the Semantic Web Technologies.
Adaptive Linear Span Network for Object Skeleton Detection
Creators: name: Liu, Chang
name: Tian, Yunjie
name: Jiao, Jianbin
name: Ye, Qixiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Conventional networks for object skeleton detection are usually hand-crafted. Although effective, they require intensive priori knowledge to configure representative features for objects in different scale granularity.In this paper, we propose adaptive linear span network (AdaLSN), driven by neural architecture search (NAS), to automatically configure and integrate scale-aware features for object skeleton detection. AdaLSN is formulated with the theory of linear span, which provides one of the earliest explanations for multi-scale deep feature fusion. AdaLSN is materialized by defining a mixed unit-pyramid search space, which goes beyond many existing search spaces using unit-level or pyramid-level features.Within the mixed space, we apply genetic architecture search to jointly optimize unit-level operations and pyramid-level connections for adaptive feature space expansion. AdaLSN substantiates its versatility by achieving significantly higher accuracy and latency trade-off compared with state-of-the-arts. It also demonstrates general applicability to image-to-mask tasks such as edge detection and road extraction. Code is available at \href{https://github.com/sunsmarterjie/SDL-Skeleton}{\color{magenta}github.com/sunsmarterjie/SDL-Skeleton}.
description: 13 pages, 9 figures
Relational Parametricity and Control
Creators: name: Hasegawa, Masahito
Publisher: name: arXiv
Year: 2006
Subjects: subject: Programming Languages (cs.PL)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.3.2

description: We study the equational theory of Parigot's second-order λμ-calculus in connection with a call-by-name continuation-passing style (CPS) translation into a fragment of the second-order λ-calculus. It is observed that the relational parametricity on the target calculus induces a natural notion of equivalence on the λμ-terms. On the other hand, the unconstrained relational parametricity on the λμ-calculus turns out to be inconsistent with this CPS semantics. Following these facts, we propose to formulate the relational parametricity on the λμ-calculus in a constrained way, which might be called ``focal parametricity''.
description: 22 pages, for Logical Methods in Computer Science
Refolding upon force quench and pathways of mechanical and thermal unfolding of ubiquitin
Creators: name: Li, Mai Suan
name: Kouza, Maksim
name: Hu, Chin-Kun
Publisher: name: arXiv
Year: 2006
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: The refolding from stretched initial conformations of ubiquitin (PDB ID: 1ubq) under the quenched force is studied using the Go model and the Langevin dynamics. It is shown that the refolding decouples the collapse and folding kinetics. The force quench refolding times scale as tau_F ~ exp(f_q*x_F/k_B*T), where f_q is the quench force and x_F = 0.96 nm is the location of the average transition state along the reaction coordinate given by the end-to-end distance. This value is close to x_F = 0.8 nm obtained from the force-clamp experiments. The mechanical and thermal unfolding pathways are studied and compared with the experimental and all-atom simulation results in detail. The sequencing of thermal unfolding was found to be markedly different from the mechanical one. It is found that fixing the N-terminus of ubiquitin changes its mechanical unfolding pathways much more drastically compared to the case when the C-end is anchored. We obtained the distance between the native state and the transition state x_UF=0.24 nm which is in reasonable agreement with the experimental data.
description: 35 pages, 15 figures, 1 table
Quantifying the Causal Effects of Conversational Tendencies
Creators: name: Zhang, Justine
name: Mullainathan, Sendhil
name: Danescu-Niculescu-Mizil, Cristian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Understanding what leads to effective conversations can aid the design of better computer-mediated communication platforms. In particular, prior observational work has sought to identify behaviors of individuals that correlate to their conversational efficiency. However, translating such correlations to causal interpretations is a necessary step in using them in a prescriptive fashion to guide better designs and policies. In this work, we formally describe the problem of drawing causal links between conversational behaviors and outcomes. We focus on the task of determining a particular type of policy for a text-based crisis counseling platform: how best to allocate counselors based on their behavioral tendencies exhibited in their past conversations. We apply arguments derived from causal inference to underline key challenges that arise in conversational settings where randomized trials are hard to implement. Finally, we show how to circumvent these inference challenges in our particular domain, and illustrate the potential benefits of an allocation policy informed by the resulting prescriptive information.
description: 24 pages, 6 figures. In Proceedings of CSCW, 2020
Πρόσθιο Περιφάκιο Ανθρώπινου Οφθαλμού: Μελέτη Μηχανικών Ιδιοτήτων Με Μικροσκόπιο Ατομικών Δυνάμεων (AFM)
Creators: name: Τσαούσης, Κωνσταντίνος Θεοδοσίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Περιφάκιο οφθαλμού
Εμβιομηχανική
Μικροσκοπία Ατομικών Δυνάμεων
Lens Capsule
Biomechanics
Atomic Force Microscopy

description: Στο πρώτο μέρος αυτής της μεταπτυχιακής εργασίας παρουσιάζονται κάποια στοιχεία για τον υπό μελέτη ιστό και αναδεικνύεται η κλινική σημασία του ανθρώπινου περιφακίου. Στη συνέχεια, συζητείται η σημαντικότητα των μηχανικών ιδιοτήτων των βιολογικών ιστών καθώς και η προτεινόμενη μέθοδος καθορισμού τους, η Μικροσκοπία Ατομικών Δυνάμεων. Ακόμη επισημαίνεται η δυνατότητα χρήσης του ανθρώπινου περιφακίου στα πλαίσια της Βιοτεχνολογίας ως υπόστρωμα για την ανάπτυξη και καλλιέργεια κυττάρων με σκοπό την μελέτη τους, σε πρώτο στάδιο, αλλά και με την ελπίδα της κλινικής χρησιμοποίησης του. Στο πειραματικό μέρος της εργασίας αναλύονται οι μέθοδοι απομόνωσης, προετοιμασίας και μέτρησης του βιολογικού υλικού. Τέλος, με την βοήθεια των καμπυλών δύναμης- παραμόρφωσης προσδιορίζονται οι μηχανικές ιδιότητες του ανθρωπίνου περιφακίου και συζητιούνται οι δυσκολίες που προκύπτουν από την διαδικασία εξέτασης βιολογικών δειγμάτων με την μικροσκοπία ατομικών δυνάμεων (Atomic Force Microscopy, AFM).
description: In the first part of the present thesis some literature data concerning the tissue under study (human capsule) are presented and, in addition, the clinical significance of the tissue is highlighted. Also the importance of the mechanical properties of biological tissues is discussed as well as the proposed method of measurement, Atomic Force Microscopy. The potential of using the human lens capsule in Biotechnology as a substrate for the growth and cell culture is also examined. In the second experimental part of the thesis the methods of isolation, preparation and measurement of biological material are thorough analyzed. Finally, by means of force-distance curves, the mechanical properties of the human lens capsule are determined. Difficulties arising from the process of examining biological samples by atomic force microscopy (AFM) are also demonstrated.
Lower bound on the radii of black-hole photonspheres
Creators: name: Hod, Shahar
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The existence of closed null circular geodesics around black holes is one of the most intriguing predictions of general relativity. It has recently been conjectured that the radii of black-hole photonspheres are bounded from below by the simple relation $r_{\text{ph}}\geq {3\over2}r_{\text{H}}$, where $r_{\text{H}}$ is the radius of the outer black-hole horizon. We here prove the validity of this conjecture for spherically symmetric hairy black-hole configurations whose radial pressure function $P\equiv |r^3p|$ decreases monotonically.
description: 8 pages
More insights into bar quenching. Multi-wavelength analysis of four barred galaxies
Creators: name: George, Koshy
name: Joseph, P.
name: Mondal, C.
name: Subramanian, S.
name: Subramaniam, A.
name: Paul, K. T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The underlying nature of the process of star formation quenching in the central regions of barred disc galaxies that is due to the action of stellar bar is not fully understood. We present a multi-wavelength study of four barred galaxies using the archival data from optical, ultraviolet, infrared, CO, and HI imaging data on star formation progression and stellar and gas distribution to better understand the process of bar quenching. We found that for three galaxies, the region between the nuclear or central sub-kiloparsec region and the end of the bar (bar region) is devoid of neutral and molecular hydrogen. While the detected neutral hydrogen is very negligible, we note that molecular hydrogen is present abundantly in the nuclear or central sub-kiloparsec regions of all four galaxies. The bar co-rotation radius is also devoid of recent star formation for three out of four galaxies. One galaxy shows significant molecular hydrogen along the bar, which might mean that the gas is still being funnelled to the centre by the action of the stellar bar. Significant star formation is also present along the bar co-rotation radius of this galaxy. The study presented here supports a scenario in which gas redistribution as a result of the action of stellar bar clears the bar region of fuel for further star formation and eventually leads to star formation quenching in the bar region.
description: Accepted for publication in A&A. Continuation on the letter paper (arXiv:1812.04178) to appear in main journal
MPEC 2024-A13 : 2016 CK246
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
การประยุกต์ใช้ทฤษฎีเกสตัลท์กับแคปท์ช่า : การศึกษาด้านความง่ายต่อผู้ใช้
Creators: name: ณัฐธนนท์ หงส์วริทธิ์ธร
name: สุทธิเกียรติ มีลาภ
Publisher: name: กองบริหารการวิจัย มหาวิทยาลัยธรรมศาสตร์
Year: 2558
Subjects: CAPTCHA, completely automatic public turing test to tell computer and human apart, gestalt, security, authentication, human recognition, user interface

description: 4, 23, วารสารวิทยาศาสตร์และเทคโนโลยี
Edges and Endpoints in 21-cm Observations from Resonant Photon Production
Creators: name: Caputo, Andrea
name: Liu, Hongwan
name: Mishra-Sharma, Siddharth
name: Pospelov, Maxim
name: Ruderman, Joshua T.
name: Urbano, Alfredo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce a novel class of signatures---spectral edges and endpoints---in 21-cm measurements resulting from interactions between the standard and dark sectors. Within the context of a kinetically mixed dark photon, we demonstrate how resonant dark photon-to-photon conversions can imprint distinctive spectral features in the observed 21-cm brightness temperature, with implications for current, upcoming, and proposed experiments targeting the cosmic dawn and the dark ages. These signatures open up a qualitatively new way to look for physics beyond the Standard Model using 21-cm observations.
description: 5+6 pages, 3+1 figures
Εκτίμηση της ασυμμετρίας αναπτυξιακού προτύπου σε φυτικούς οργανισμούς:
Creators: name: Κοκκινάκη, Αικατερίνη Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: κυμαινόμεη ασυμμετρία
αναπτυξιακή αστάθεια
Olea europaea
fluctuating asymmetry
developmental instability

description: Η αναπτυξιακή αστάθεια, δηλαδή η τροποποίηση του αναπτυξιακού σχεδίου ενός γονοτύπου εξαιτίας τοπικών διαταραχών του περιβάλλοντος, εκτιμάται συνήθως ως κυμαινόμενη ασυμμετρία του φαινοτύπου, που υπολογίζεται ως η τυχαία απόκλιση της μορφής από την «ιδανική» συμμετρική μορφή. Στη συγκεκριμένη διατριβή, εκτιμήσαμε την κυμαινόμενη ασυμμετρία φύλλων μιας ποικιλίας ελιάς για να διαπιστώσουμε διαφορές ανάλογα με την καλλιεργητική πρακτική (οργανική έναντι συμβατικής). Σε 2 από τις 3 περιοχές βρέθηκε μεγαλύτερη κυμαινόμενη ασυμμετρία στα φύλλα ελιάς οργανικής καλλιέργειας σε σχέση με τα φύλλα της συμβατικής καλλιέργειας. Χρησιμοποιήσαμε τους συνήθεις δείκτες κυμαινόμενης ασυμμετρίας που βασίζονται στην εκτίμηση της διαφοράς του πλάτους των δύο πλευρών του φύλλου στο πλάτος στο μέσο μήκους του. Ωστόσο, επιμέρους στόχος μας ήταν να δοκιμάσουμε μια σειρά άλλων εκτιμητών της κυμαινόμενης ασυμμετρίας όπως οι διαφορές στο εμβαδόν των δύο πλευρών ή τμημάτων του φύλου. Ήταν στατιστικά σημαντικά τα αποτελέσματα και για τους άλλους εκτιμητές. Το εμβαδόν θα μπορούσε να θεωρηθεί καλύτερος εκτιμητής της κυμαινόμενης ασυμμετρίας λόγω ότι είναι πιο αντιπροσωπευτικός και πιο ασφαλής. Σε αντίθεση με το μέγιστο πλάτος που δεν μπορεί να θεωρηθεί καλύτερος εκτιμητής γιατί ήταν λιγότερο στατιστικά σημαντικό σε σχέση με το πλάτος στο μέσο του μήκους του.
description: Developmental instability (variation of development within a genotype due to local fluctuations in environmental conditions) is often estimated as fluctuating asymmetry, a measure of the realized random deviations from the perfect bilateral symmetry. In this work we estimated fluctuation asymmetry indices from olive trees of the same variety to ascertain whether there are differences according to cultivation method (organic vs. conventional). We used the well established methods of fluctuating asymmetry, involving the measurement of width of the left and the right side of each leaf exactly at middle length. Our aim however is to test some other estimates of leaf asymmetry, like the surface of both sides and the widths and surfaces of small segments across the leaf. Was statistically significant results for other estimators. The area could be considered best estimator of fluctuating asymmetry because they are more representative and more secure. In contrast to the maximum width that can not be considered because it was best estimator significantly less than the width at mid length.
PHOKHARA, the radiative return and the $(g-2)_μ$ puzzle
Creators: name: Rodrigo, German
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The radiative return has proven to be a competitive method for the precise measurement of the hadronic cross section, detailed studies of hadronic interactions, and even discoveries of new resonances. The most recent and future devolopments of the Monte Carlo event generator PHOKHARA are highlighted, and the impact of the radiative return measurements on the $(g-2)_μ$ puzzle is discussed.
description: Talk given at 9th International Workshop on Tau Lepton Physics (Tau06), Pisa, Italy, 19-22 Sep 2006. 6 pp, 1 figure
An Expansion of Well Tempered Gravity
Creators: name: Linder, Eric V.
name: Appleby, Stephen
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: When faced with two nigh intractable problems in cosmology -- how to remove the original cosmological constant problem and how to parametrize modified gravity to explain current cosmic acceleration -- we can make progress by counterposing them. The well tempered solution to the cosmological constant through degenerate scalar field dynamics also relates disparate Horndeski gravity terms, making them contrapuntal. We derive the connection between the kinetic term $K$ and braiding term $G_3$ for shift symmetric theories (including the running Planck mass $G_4$), extending previous work on monomial or binomial dependence to polynomials of arbitrary finite degree. We also exhibit an example for an infinite series expansion. This contrapuntal condition greatly reduces the number of parameters needed to test modified gravity against cosmological observations, for these "golden" theories of gravity.
description: 7 pages
Η δικαιοδοσία του Συμβουλίου της Επικρατείας επί των δικαιοδοτικών πράξεων των εκκλησιαστικών οργάνων:
Creators: name: Κολοκοτρώνης, Δημήτριος Eυθυμίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: εκκλησία
ακύρωση
δικαιοδοσία
church
annulment
jurisdiction

description: Σκοπός αυτής της διπλωματικής εργασίας ήταν η παρουσίαση της δικαιοδοσίας του Συμβουλίου της Επικρατείας (το Ανώτατο Διοικητικό Δικαστήριο) επί των δικαιοδοτικών πράξεων τις οποίες εκδίδουν τα διάφορα εκκλησιαστικά όργανα. Αρχικά, εξετάστηκαν οι γενικές προϋποθέσεις του παραδεκτού της αίτησης ακύρωσης ενώπιον του Συμβουλίου της Επικρατείας, όπως η νομική φύση των οργάνων της Εκκλησίας και το έννομο συμφέρον. Επίσης, ιδιαίτερη έμφαση δόθηκε στο ζήτημα των «εκκλησιαστικών δικαστηρίων» σχετικά με τη νομική φύση των ίδιων και των πράξεων που εκδίδονται από αυτά. Ακόμη, παρουσιάζονται η μορφή και ο τρόπος λειτουργίας των «εκκλησιαστικών δικαστηρίων» και των άλλων δικαιοδοτικών οργάνων της Εκκλησίας π.χ. η διαδικασία και το είδος των ποινών που επιβάλλουν. Στα τελευταία κεφάλαια βλέπουμε τη νομική φύση των πράξεων που εκδίδουν τα όργανα των Ιερών Μονών εντός και εκτός του Αγίου Όρους ώστε να συμπεράνουμε το αν προσβάλλονται ή όχι ενώπιον του Συμβουλίου της Επικρατείας. Σχετικά με κάθε θέμα που απασχόλησε την εργασία αυτή έγινε εκτενής συλλογή και παρουσίαση της νομολογίας κυρίως του Συμβουλίου της Επικρατείας μέχρι και το έτος 2011.
description: The aim of the present thesis was the presentation of the jurisdiction that the Hellenic Council of State (the Supreme Administrative Court) has got, concerning the jurisdictional acts that come from the ecclesiastical administrative authorities of the Greek Orthodox Church. Fistly, there has been an examination of the general necessary conditions of the petition for judicial review (annulment) that falls under the jurisdiction of the Council of State. Such necessary condition is the legitimate interest. Also, it has been emphasized the question of the legal type of personality that the “ecclesiastical courts” have as well as the legal type of the acts that derive from them. Moreover, there has been a depiction of the form and the way by which these “ecclesiastical courts” and the others jurisdictional authorities function e.g the procedure and the type of the penalties that they impose. In the last chapters one can see the legal type of the acts that come from the Holy Monasteries’ administrative authorities, whether inside or outside the Holy Mount of Athos, in order to conclude concerning the possibility of a petition for judicial review taking place against them. In relation to every issue that this thesis came through it has been a large collection and presentation of the jurisprudence mainly of the Council of State until 2011.
Μουσείο και ψηφιακή τεχνολογία: ανάπτυξη εικονικού μουσείου ελληνικών λαϊκών παιδικών μουσικών οργάνων
Creators: name: Στεργιάκη, Αθανασία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: ελληνικά λαϊκά μουσικά όργανα
εικονικό μουσείο
εικονική πραγματικότητα
traditional Greek musical instruments played by children
virtual museum
virtual reality

description: Στο πλαίσιο αυτής της εργασίας περιγράφεται η μελέτη και η ανάπτυξη ενός εικονικού μουσείου - εκπαιδευτικής εφαρμογής με θέμα τα παραδοσιακά όργανα, συγκεκριμένα τα λαϊκά παιδικά μουσικά όργανα. Το εικονικό μουσείο, εφαρμογή εικονικής πραγματικότητας, σχεδιάστηκε από το μηδέν και δεν αντιστοιχεί σε υπαρκτό μουσείο. Ο χρήστης κατά την εκτέλεση της εφαρμογής μπορεί να περιηγηθεί μέσα στο εικονικό μουσείο και να δει πληροφορίες σχετικά με τα λαϊκά παιδικά μουσικά όργανα που αποτελούν τα εκθέματα του μουσείου. Η υλοποίηση της εφαρμογής δίνει έμφαση στην αλληλεπίδραση ανθρώπου – υπολογιστή από τη σκοπιά της εκπαίδευσης.
description: This dissertation deals with the study and the development of a virtual museum, a virtual reality application on traditional Greek musical instruments played by children. This virtual museum was designed and implemented from scratch. It is not the virtual counterpart of a brick-and-mortar museum; it does not exist in the real world. The user can visit the museum through his/her computer and interact with its virtual exhibits, which are traditional Greek musical instruments played by children. Emphasis is put on human-computer interaction schemes from an educational point of view.
การเปรียบเทียบวิธีการประมาณค่าแบบช่วงสำหรับพารามิเตอร์ขนาด ของการแจกแจงไวบูลล์แบบสองพารามิเตอร์
Creators: name: ศรสวรรค์ บุญเพ็ญ
name: บุญอ้อม โฉมที
name: อภิญญา หิรัญวงษ์
Publisher: name: กองบริหารการวิจัย มหาวิทยาลัยธรรมศาสตร์
Year: 2558
Subjects: เส้นทางขนส่งการแจกแจงไวบูลล์, วิธีบูตสแตรปที, วิธีแจ็คไนฟ์, สัมประสิทธิ์ความเชื่อมั่น, ความกว้างเฉลี่ยของช่วงความเชื่อมั่น

description: 4, 23, วารสารวิทยาศาสตร์และเทคโนโลยี
Magnetic and chemical nonuniformity in Ga[1-x]Mn[x]As films as probed by polarized neutron and x-ray reflectometry
Creators: name: Kirby, B. J.
name: Borchers, J. A.
name: Rhyne, J. J.
name: O'Donovan, K. V.
name: Velthuis, S. G. E. te
name: Roy, S.
name: Sanchez-Hanke, Cecilia
name: Wojtowicz, T.
name: Liu, X.
name: Lim, W. L.
name: Dobrowolska, M.
name: Furdyna, J. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have used complementary neutron and x-ray reflectivity techniques to examine the depth profiles of a series of as-grown and annealed Ga[1-x]Mn[x]As thin films. A magnetization gradient is observed for two as-grown films and originates from a nonuniformity of Mn at interstitial sites, and not from local variations in Mn at Ga sites. Furthermore, we see that the depth-dependent magnetization can vary drastically among as-grown Ga[1-x]Mn[x]As films despite being deposited under seemingly similar conditions. These results imply that the depth profile of interstitial Mn is dependent not only on annealing, but is also extremely sensitive to initial growth conditions. We observe that annealing improves the magnetization by producing a surface layer that is rich in Mn and O, indicating that the interstitial Mn migrates to the surface. Finally, we expand upon our previous neutron reflectivity study of Ga[1-x]Mn[x]As, by showing how the depth profile of the chemical composition at the surface and through the film thickness is directly responsible for the complex magnetization profiles observed in both as-grown and annealed films.
description: Now Published in Physical Review B
A novel framework to study the impact of binding energy distributions on the chemistry of dust grains
Creators: name: Grassi, T.
name: Bovino, S.
name: Caselli, P.
name: Bovolenta, G.
name: Vogt-Geisse, S.
name: Ercolano, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The evaporation of molecules from dust grains is crucial to understand some key aspects of the star- and the planet-formation processes. During the warm-up phase the presence of young protostellar objects induces molecules to evaporate from the dust surface into the gas phase, enhancing its chemical complexity. Similarly, in circumstellar disks, the position of the so-called snow-lines is determined by evaporation, with important consequences for the formation of planets. The amount of molecules that are desorbed depends on the interaction between the species and the grain surface, which is controlled by the binding energy. Recent theoretical and experimental works point towards a distribution of values for this parameter instead of the single value often employed in astrochemical models.We present here a new "multi-binding energy" framework, to assess the effects that a distribution of binding energies has on the amount of species bound to the grains. We find that the efficiency of the surface chemistry is significantly influenced by this process with crucial consequences on the theoretical estimates of the desorbed species.
description: Accepted A&A
The SCUBA HAlf Degree Extragalactic Survey (SHADES) - VII. Optical/IR photometry and stellar masses of sub-millimeter galaxies
Creators: name: Dye, Simon
name: Eales, S. A.
name: Aretxaga, I.
name: Serjeant, S.
name: Dunlop, J. S.
name: Babbedge, T. S. R.
name: Chapman, S. C.
name: Cirasuolo, M.
name: Clements, D. L.
name: Coppin, K. E. K.
name: Dunne, L.
name: Egami, E.
name: Farrah, D.
name: Ivison, R. J.
name: van Kampen, E.
name: Pope, A.
name: Priddey, R.
name: Rieke, G. H.
name: Schael, A. M.
name: Scott, D.
name: Simpson, C.
name: Takagi, T.
name: Takata, T.
name: Vaccari, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present estimates of the photometric redshifts, stellar masses and star formation histories of sources in the SCUBA HAlf Degree Extragalactic Survey (SHADES). This paper describes the 60 SCUBA sources detected in the Lockman Hole covering an area of ~320 square arcmin. Using photometry spanning the B band to 8um, we find that the average SCUBA source forms a significant fraction of its stars in an early period of star formation and that most of the remainder forms in a shorter more intense burst around the redshift it is observed. This trend does not vary significantly with source redshift but the exact ratio of early to late mass is quite sensitive to the way extinction is treated in the modelling. However, the sources show a clear increase in stellar mass with redshift, consistent with downsizing. In terms of SED types, only two out of the 51 sources we have obtained photometric redshifts for are best fit by a quasar-like spectral energy distribution, with approximately 80 per cent of the sources being best fit with late-type spectra (Sc, Im and starburst). By including photometry at 850um, we conclude that the average SCUBA source is forming stars at a rate somewhere between 6 and 30 times the rate implied from the rest-frame optical in a dust obscured burst and that this burst creates 15-65 per cent of the total stellar mass. Using a simplistic calculation, we estimate from the average star formation history that between one in five and one in 15 bright (L_* +2 mag < L_optical < L_* -1 mag) galaxies in the field over the interval 0 < z < 3 will at some point in their lifetime experience a similar energetic dusty burst of star formation. Finally, we compute the evolution of the star formation rate density and find it peaks around z=2.
description: 27 pages, 23 figures. Refereed resubmission to MNRAS. 5 figures containing postage stamp images have been placed in separate files due to upload limit