cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The role of institutional delivery in preventing early neonatal mortality in Bangladesh
Creators: name: Ijdi, Rashida-E
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: Objective: Bangladesh has achieved the Millennium Development Goal target 4 well ahead of time by reducing under-5 mortality. However, evidence indicates that reduction in neonatal mortality has been stagnant in the recent years. The purpose of this study is to identify the factors affecting early neonatal mortality (ENNM), which represents more than 80% of the neonatal mortality in Bangladesh, with a specific focus on place of delivery.
Methods: In this study, 2014 Bangladesh DHS data was analyzed on early-neonatal survival in children born in the three years preceding the survey. The role of place of delivery on ENNM was examined by using multivariate logistic regression models adjusted for clustering and relevant socio-economic, pregnancy and newborn characteristics. 
Results: Between 2012 and 2014, there were 4,905 deliveries in 17,863 sampled households, 38% of which were delivered at health facilities. The estimated early neonatal mortality rate during this period was 24 deaths per 1,000 live births. We found that the odds of early-neonatal mortality when the mother delivered the child at a health facility is 3.5 times the odds of early-neonatal mortality among children delivered at home (aOR: 3.50; 95% CI: 1.48-8.27). In addition, the newborn who had received a higher level of essential newborn care components are 86% less likely to die during the first seven days of their lives compared to their counterparts (aOR: 0.14; 95% CI: 0.06-0.34). Logistic analysis also found that antenatal care by a medically trained provider and postnatal care significantly reduce the odds for early neonatal mortality. 
Conclusion: The study findings highlight the importance of institutional or health facility delivery and proper pregnancy as well as newborn care in preventing early neonatal deaths. Accelerated improvements are most needed to improve the quality of care during and immediately after delivery in health facilities, particularly in public hospitals and in rural areas.
Structure-aware combinatorial group testing: a new method for pandemic screening
Creators: name: Idalino, Thais Bardini
name: Moura, Lucia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Combinatorial group testing (CGT) is used to identify defective items from a set of items by grouping them together and performing a small number of tests on the groups. Recently, group testing has been used to design efficient COVID-19 testing, so that resources are saved while still identifying all infected individuals. Due to test waiting times, a focus is given to non-adaptive CGT, where groups are designed a priori and all tests can be done in parallel. The design of the groups can be done using Cover-Free Families (CFFs). The main assumption behind CFFs is that a small number $d$ of positives are randomly spread across a population of $n$ individuals. However, for infectious diseases, it is reasonable to assume that infections show up in clusters of individuals with high contact (children in the same classroom within a school, households within a neighbourhood, students taking the same courses within a university, people seating close to each other in a stadium). The general structure of these communities can be modeled using hypergraphs, where vertices are items to be tested and edges represent clusters containing high contacts. We consider hypergraphs with non-overlapping edges and overlapping edges (first two examples and last two examples, respectively). We give constructions of what we call structure-aware CFF, which uses the structure of the underlying hypergraph. We revisit old CFF constructions, boosting the number of defectives they can identify by taking the hypergraph structure into account. We also provide new constructions based on hypergraph parameters.
The Cycle route of the upper Aterno valley: between ecotourism and sustainable mobility
Creators: name: Rotilio, Marianna
name: Taballione, Annalisa
name: De Berardinis, Pierluigi
Publisher: name: TECHNE - Journal of Technology for Architecture and Environment
Year: 2016

description: Nell’ottica della promozione della mobilità sostenibile e del rilancio e valorizzazione di territori ed alla luce del crescente interesse verso la specifica tematica, la Regione Abruzzo ha avviato uno studio di fattibilità per la realizzazione di una pista polifunzionale nell’Alta Valle dell’Aterno. Il contributo che si intende proporre ha come obiettivo quello di illustrare il percorso decisionale e i risultati che sono stati raggiunti già in tale studio che ha previsto la realizzazione di una dorsale principale e di un sistema di reti, a scopo sia turistico che amatoriale, oltre che come servizio alla mobilità locale. La finalità della ricerca è stata quella di individuare una strategia progettuale facilmente replicabile e di dotare le amministrazioni di uno strumento di programmazione.
description: TECHNE - Journal of Technology for Architecture and Environment, TECHNE 11 (2016): Infrastructures
Cosmarium dimaziforme var. concavum Kurt Forst. 1981
Creators: name: Ramos, Geraldo José Peixoto
name: Costa, Fabiana De Matos
name: Santos, Maria Aparecida Dos
name: Moura, Carlos Wallace Do Nascimento
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Charophyta
Conjugatophyceae
Zygnematales
Desmidiaceae
Cosmarium
Cosmarium dimaziforme
Cosmarium dimaziforme var. concavum kurt först. & f.eckert ex kurt först. (1981: 228)

description: Cosmarium dimaziforme var. concavum Kurt Först. & F.Eckert ex Kurt Först. (1981: 228) (Figs 7–10)
 Cell dimensions: length 16–18 μm, breadth 20–22 μm, isthmus 6–8 μm.
 Habitat characteristics: River; water temperature 19ºC, pH 7.2, conductivity 20 μS. cm-1, dissolved oxygen 7.3 mg.L- 1.
 Material examined: HUEFS 244150.
 Notes: This variety was described by Förster (1964) from material collected in Serra da Lua, northern Brazil. It differs from the nominate variety mainly by having cells 1.2 times wider than long, a concave apex, apical angles, and lateral lobes with a wart and smooth membrane. The taxon resembles Cosmarium pileatum var. brasiliense (Grönblad) Willi Krieg. & Gerloff (1969:318), which differs mainly by having acute-angled open sinus, truncate apices, and the central region of the semicell has only a prominent inflation, while C. dimaziforme var. concavum has three verrucae (best seen in apical view).
 Cosmarium dimaziforme var. concavum was reported for coastal lagoons along the north littoral region (Conde, Esplanada, Entre Rios) of Bahia by Oliveira et al. (2016). In the illustration provided by those authors (Fig. 19), however, the identification of this taxon was apparently misapplied, because it does not show the concave margins characteristic of this variety, but rather shows apical margins truncated, approaching those of Cosmarium dimaziforme var. goyazense Kurt Först. & F.Eckert (1964: 389). Thus, the taxon under discussion from the Chapada Diamantina is the first confirmed record of C. dimaziforme var. concavum for northeastern Brazil.
description: Published as part of Ramos, Geraldo José Peixoto, Costa, Fabiana De Matos, Santos, Maria Aparecida Dos & Moura, Carlos Wallace Do Nascimento, 2019, Taxonomic novelties, new records, and rare species of desmids from the Chapada Diamantina region, Brazil, pp. 185-196 in Phytotaxa 391 (3) on page 187, DOI: 10.11646/phytotaxa.391.3.2, http://zenodo.org/record/13726470
The integration of physical and digital urban infrastructures: the role of “Big data”
Creators: name: Talamo, Cinzia
name: Atta, Nazly
name: Martani, Claudio
name: Paganin, Giancarlo
Publisher: name: TECHNE - Journal of Technology for Architecture and Environment
Year: 2016

description: Le molte evoluzioni nell’ambito della gestione delle informazioni, l’affermarsi dei concetti di Big Data e IoT (internet of things), lo sviluppo e la diffusione della sensoristica stanno aprendo a innovativi scenari e delineando nuove questioni rispetto alle attività conoscitive e decisionali, con declinazioni specifiche se considerate in relazione all’ambito applicativo delle infrastrutture e dei beni edilizi e urbani. A partire da queste premesse, obiettivo del paper è delineare l’attuale quadro dei fattori tecnologici di innovazione e proporre alcune ipotesi circa i potenziali scenari futuri dei servizi di supporto alla gestione e allo sviluppo del territorio e dei manufatti edilizi a partire da diverse possibili forme di integrazione tra infrastrutture urbane fisiche e digitali. Nell’ambito delle infrastrutture, l’analisi del ruolo dell’informazione rispetto all’interazione tra materiale e immateriale pone una serie di questioni interpretative che il paper tratteggia.
description: TECHNE - Journal of Technology for Architecture and Environment, TECHNE 11 (2016): Infrastructures
The variability behavior of CoRoT M-giant Stars
Creators: name: Lopes, C. E. Ferreira
name: Neves, V.
name: Leão, I. C.
name: de Freitas, D. B.
name: Martins, B. L. Canto
name: da Costa, A. D.
name: Paz-Chinchón, F.
name: Chagas, M. L. Das
name: Baglin, A.
name: Janot-Pacheco, E.
name: De Medeiros, J. R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: For 6 years the Convection, Rotation, and Planetary Transits (CoRoT) space mission has acquired photometric data from more than one hundred thousand point sources towards and directly opposite from the inner and outer regions of the Galaxy. The high temporal resolution of the CoRoT data combined with the wide time span of the observations has enabled the study of short and long time variations in unprecedented detail. From the initial sample of 2534 stars classified as M-giants in the CoRoT databasis, we selected 1428 targets that exhibit well defined variability, using visual inspection. The variability period and amplitude of C1 stars (stars having Teff < 4200 K) were computed using Lomb-Scargle and harmonic fit methods. The trends found in the V-I vs J-K color-color diagram are in agreement with standard empirical calibrations for M-giants. The sources located towards the inner regions of the Galaxy are distributed throughout the diagram while the majority of the stars towards the outer regions of the Galaxy are spread between the calibrations of M-giants and the predicted position for Carbon stars. The stars classified as supergiants follow a different sequence from the one found for giant stars. We also performed a KS test of the period and amplitude of stars towards the inner and outer regions of the Galaxy. We obtained a low probability that the two samples come from the same parent distribution. The observed behavior of the period-amplitude and period-Teff diagrams are, in general, in agreement with those found for Kepler sources and ground based photometry, with pulsation being the dominant cause responsible for the observed modulation. We also conclude that short-time variations on M-Giant stars do not exist orare very rare and the few cases we found are possibly related to biases or background stars.
description: 11 pages, 6 figures
Arresting classical many-body chaos by kinetic constraints
Creators: name: Deger, Aydin
name: Roy, Sthitadhi
name: Lazarides, Achilleas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate the effect of kinetic constraints on classical many-body chaos in a translationally-invariant Heisenberg spin chain using a classical counterpart of the out-of-time-ordered correlator (OTOC). The strength of the constraint drives a 'dynamical phase transition' separating a delocalised phase, where the classical OTOC propagates ballistically, from a localised phase, where the OTOC does not propagate at all and the entire system freezes. This is unexpected given that all spins configurations are dynamically connected to each other. We show that localisation arises due to the dynamical formation of frozen islands, contiguous segments of spins immobile due to the constraints, dominating over the melting of such islands.
description: 6 pages, 4 figures + Supplementary Material (2 pages, 2 figures), version published in Phys. Rev. Lett
Effect of SOI substrate on silicon nitride resistance switching using MIS structure
Creators: name: Mavropoulis, A
name: Vasileiadis, N
name: Theodorou, C
name: Sygellou, L
name: Normand, P
name: Sirakoulis, G Ch
name: Dimitrakis, P
Publisher: name: arXiv
Year: 2025
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Several resistive memory technologies (RRAMs) are prominent, but few are fulfilling the requirements for CMOS integration and meet the commercialization standards. In this work, the fabrication and electrical characterization of a fully compatible CMOS process on SOI substrate of 1R silicon SiN-based resistance switching (RS) MIS devices is presented. The RS characteristics are compared with the same devices previously fabricated on bulk silicon.
Some semi-direct products with free algebras of symmetric invariants
Creators: name: Yakimova, Oksana
Publisher: name: arXiv
Year: 2015
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Let $\mathfrak g$ be a complex reductive Lie algebra and $V$ the underling vector space of a finite-dimensional representation of $\mathfrak g$. Then one can consider a new Lie algebra $\mathfrak q=\mathfrak g{\ltimes} V$, which is a semi-direct product of $\mathfrak g$ and an Abelian ideal $V$. We outline several results on the algebra $\mathbb C[\mathfrak q^*]^{\mathfrak q}$ of symmetries invariants of $\mathfrak q$ and describe all semi-direct products related to the defining representation of $\mathfrak{sl}_n$ with $\mathbb C[\mathfrak q^*]^{\mathfrak q}$ being a free algebra.
description: minor corrections
Maria Chiara Torricelli (a cura di), ES-LCA e patrimonio naturale Life Cycle Analisi ambientale e sociale di un’area protetta
Creators: name: Bosia, Daniela
Publisher: name: TECHNE - Journal of Technology for Architecture and Environment
Year: 2016

description: TECHNE - Journal of Technology for Architecture and Environment, TECHNE 11 (2016): Infrastructures
Dumping the Closet Skeletons Online: Exploring the Guilty Information Disclosure Behavior on Social Media
Creators: name: Yang, Yukun
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Privacy issues on social media are becoming an increasing area of concern. Paradoxically, some netizens are actively divulging their privacy online. Noticeably, some information is specifically guilt-related, though confession online is considered irrational. This preliminary study strives to understand this guilty information disclosure behavior through a mixed-approach. Analyzing posts and comments in a confession forum on Reddit, we find that sex-related and recreation-related topics prevail. Our qualitative investigation produces a thematic model with 71 codes, 17 concepts, 4 frames, 3 categories, and 9 relationships, capturing the intents, content, influencers of this behavior, and the interactions among users. Our contribution relies on the investigation of this peculiar behavior to better understand people’s privacy behavior. Also, we render a sophisticated framework around guilt-inducing behaviors useful for future work. We also suggest it as a mixture of conformity and counter-conformity, a modern “technology of self” and a variant of Adaptive Cognitive Theory.
Bloch oscillations in the magnetoconductance of twisted bilayer graphene
Creators: name: Vakhtel, T.
name: Oriekhov, D. O.
name: Beenakker, C. W. J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We identify a mapping between two-dimensional (2D) electron transport in a minimally twisted graphene bilayer and a 1D quantum walk, where one spatial dimension plays the role of time. In this mapping a magnetic field B perpendicular to the bilayer maps onto an electric field. Bloch oscillations due to the periodic motion in a 1D Bloch band can then be observed in purely DC transport as magnetoconductance oscillations with periodicity set by the Bloch frequency.
description: 6 pages, 7 figures, Note added: A semiclassical theory for the side branches in figure 4b is given in Appendix B of arXiv:2207.10066
The genomic Footprints of the Fall and Recovery of The Crested Ibis
Creators: name: BGI
Publisher: name: CNGB
Year: 2018
Subjects: raw sequence reads
Multispecies

description: How the genomic diversity of endangered species is shaped by their interactions with the environment and other direct human actions is a fundamental question in conservation biology. Typically, such efforts have focused on present day samples, thus represent the end product of such interactions. However, to provide temporal context, a growing number of studies have begun to include small numbers of genomic loci extracted from historic and even ancient specimens. We extend such approaches to their natural conclusion, by characterizing for the first time the complete genomic sequences of both modern and historic population samples of an endangered vertebrate, the crested ibis (Nipponia nippon). Although the contemporary population’s size has recovered from its historical low of only seven individuals, following three decades of intensive conservation efforts, we find its overall genetic variation is only 53.50% of that of historical populations, and that it today suffers from an extremely high deleterious mutation load. We furthermore show how genetic drift following the population bottleneck coupled to inbreeding have largely purged the ancient polymorphisms from the current population. Furthermore, we find a rapid occurrence of new derived mutations particularly in protein-coding regions following the establishment of the recovery breeding program, with ca. 780 SNPs per generation. In conclusion we demonstrate the unique promise of exploiting the genomic information held within museum samples for conservation and ecological research.
Cosmarium pentachondrum Borgesen 1891
Creators: name: Ramos, Geraldo José Peixoto
name: Costa, Fabiana De Matos
name: Santos, Maria Aparecida Dos
name: Moura, Carlos Wallace Do Nascimento
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Charophyta
Conjugatophyceae
Zygnematales
Desmidiaceae
Cosmarium
Cosmarium pentachondrum

description: Cosmarium pentachondrum Børgesen (1891: 39) (Figs 11–13)
 Cell dimensions: length 25–27 μm, breadth 20–22 μm, isthmus 10–12 μm.
 Habitat characteristics: River; quiet and warm waters, associated to filamentous algae.
 Material examined: HUEFS 244148.
 Notes: This is a very rare species, known only in southeastern Brazil (Rio de Janeiro, São Paulo), and it was not reported over 70 years ago. Cosmarium pentachondum was described by Børgesen based on an apparently unique specimen collected in the municipality of “Moji”; Biolo (2016), however, noted that Børgesen did not specify in which of the three areas currently known as Moji (Mogi das Cruzes, Mogi Guaçu, or Mogi Mirim in São Paulo State) the sample was collected.
 This species is mainly characterized by having semicircular semicells, eight undulations on the lateral margins, granular cell walls with 5 large granules in the mid-region of the semicell. Due these features, this species might be confused with Cosmarium itatiayae Willi Krieg. (1950: 41), which differs by having 18 granules per semicell and larger cell dimensions (length 37 μm, width 32 μm, isthmus 12 μm), whereas C. pentachondrum has ca. 13 granules per semicell and smaller cells.
description: Published as part of Ramos, Geraldo José Peixoto, Costa, Fabiana De Matos, Santos, Maria Aparecida Dos & Moura, Carlos Wallace Do Nascimento, 2019, Taxonomic novelties, new records, and rare species of desmids from the Chapada Diamantina region, Brazil, pp. 185-196 in Phytotaxa 391 (3) on page 187, DOI: 10.11646/phytotaxa.391.3.2, http://zenodo.org/record/13726470
HeatResilientCity II - Einfluss von Regional- und Stadtklima auf die Hitzebelastung in Gebäuden - Kurzfassung
Creators: name: Kriesten, Tim Felix
Publisher: name: Zenodo
Year: 2023
Subjects: HeatResilientCity
Stadtklima
Regionalklima
Innenraumklima
Hitzebelastung
Gebäudesimulation

description: Im Arbeitspaket Überregionaler Transfer von Untersuchungsergebnissen - Einfluss von Regional- und Stadtklima des Projektes HeatResilientCity II wurde der Einfluss von lokalen Wetterdaten auf die Hitzebelastung im Innenraum zweier Gebäudetypen untersucht. Hierzu wurden für fünf verschiedene Regionen (Dresden, Hamburg, Köln, Stuttgart, Potsdam) in Deutschland Messdaten von DWD-Wetterstationen für die Normalperiode 1991-2020 betrachtet. Anhand statistischer Auswertungen wurden repräsentative Jahre für einen durchschnittlichen gegenwärtigen und zukünftigen Sommer bestimmt. Der Einfluss des Stadtklimas wurde in Form von höheren Temperaturen und niedrigeren Windgeschwindigkeiten berücksichtigt. Mit den so erstellten verschiedenen Datensätze wurden für ein Gründerzeithaus und ein Gebäude des industriellen Wohnungsbaus, deren Modelle bereits in der ersten Projektphase erstellt wurden, thermische Gebäudesimulationen mit der Software IDA ICE durchgeführt, um die Hitzebelastung unter Berücksichtigung der verschiedenen Szenarien (Region, Gegenwart/Zukunft, Stadtklima) zu bewerten. Weiterhin wurden - ebenfalls aus der ersten Projektphase bekannte - Hitzeanpassungsmaßnahmen an den Gebäudemodellen vorgesehen, um deren Wirksamkeit zu bewerten. Diese Kurzfassung fasst das Vorgehen und die Ergebnisse der beschriebenen Untersuchungen zusammen.
description: This research was mainly funded by the Federal Ministry of Education and Research (BMBF) in the joint project "HeatResilientCity" (subproject grant number: 01LR2011A und 01LR2011F) and the European Union's Reconstruction and Resilience Facility (ARF) – NextGenerationEU.
Single Cell Transcriptomics and Epigenetics of Human Early Neural Differentiation
Creators: name: BGI
Publisher: name: CNGB
Year: 2018
Subjects: raw sequence reads
Monoisolate

description: provides a comprehensive and integrative study of the transcriptomics and epigenetics of human early neural differentiation, which paves the way for a deeper understanding of the regulatory mechanisms driving the differentiation of the neural lineage
Community Health Workers Improving Service Delivery in Senior Housing: A Guide to Planning
Creators: name: Stewart, Stephanie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: This planning guide is based on the grassroots pilot initiative Asheville Terrace Community Health Worker program (ATCHW), established in 2017. ATCHW addresses the complex needs of high-risk older adults in subsidized senior housing with a community-led approach. Services are provided by trained community leaders at individual, interpersonal, community and system levels. Many services utilize resident volunteers to expand reach and capacity. Professional licensed support is provided through a host of clinical and social service partners. ATCHW coordinates onsite service events, provides clinical referrals and participates in care management. CHWs are deeply familiar with the social contexts influencing service delivery success. As liaisons, CHWs share this perspective with providers to improve care delivery and health outcomes. This resource is not a step-by-step manual but instead shares best practice examples from ATCHW and practical tools to plan a community-based Community Health Worker program for older adults.
Emilio Faroldi e Maria Pilar Vettori (a cura di), Storia e progetto. Il completamento di Cremona nell'intervento di City Hub
Creators: name: Bucci, Federico
Publisher: name: TECHNE - Journal of Technology for Architecture and Environment
Year: 2016

description: TECHNE - Journal of Technology for Architecture and Environment, TECHNE 11 (2016): Infrastructures
Simplex Spline Bases on the Powell-Sabin 12-Split: Part II
Creators: name: Lyche, Tom
name: Muntingh, Georg
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 41A15, 65D07, 65D17

description: For the space $\mathcal{S}$ of $C^3$ quintics on the Powell-Sabin 12-split of a triangle, we determine the simplex splines in $\mathcal{S}$ and the six symmetric simplex spline bases that reduce to a B-spline basis on each edge, have a positive partition of unity, a (barycentric) Marsden identity, and domain points with an intuitive control net. We provide a quasi-interpolant with approximation order 6 and a Lagrange interpolant at the domain points. The latter can be used to show that each basis is stable in the $L_\infty$ norm, which yields an $h^2$ bound for the distance between the Bézier ordinates and the values of the spline at the corresponding domain points. Finally, for one of these bases we provide $C^0$, $C^1$, and $C^2$ conditions on the control points of two splines on adjacent macrotriangles, and a conversion to the Hermite nodal basis.
description: Oberwolfach report for the conference Multivariate Splines and Algebraic Geometry
Comparing applicability of prevalent Clustering Algorithms for Document Clustering
Creators: name: Krawczyk, Luisa
Publisher: name: Humboldt-Universität zu Berlin
Year: 2019
Subjects: subject: Clustering Algorithmen
subject: k-means
subject: Hierarchical Clustering
subject: Document Clustering
subject: keyword-Datensatz
subject: Clustering Algorithms
subject: Vector Space Model
subject: Clustering Evaluation
subject: 330 Wirtschaft

description: Clustering Algorithmen befassen sich mit dem Identifizieren von Gruppen ähnlicher Objekte in einem Datensatz. Ich präsentiere zwei solche Algorithmen, k-means und Hierarchical Clustering, und vergleiche ihre Anwendbarkeit für das Clustern von hochdimensionalen dünn besetzten Daten, wie sie oft im Document Clustering anzutreffen sind. Als Anwendungsbeispiel wende ich beide Algorithmen auf einen keyword-Datensatz an (den Quantlet-Datensatz des Statistik-Lehrstuhls der HU) und stelle den dazugehörigen Python-Code bereit.
description: In statistical data analysis, Clustering Algorithms are supposed to nd groups of similar points in a set of objects. I present two algorithms, k-means and hierarchical clustering, and compare their applicability for clustering high-dimensional sparse data as often dealt with when clustering documents. To demonstrate possible cases of application, I provide clustering applications on an example data set (the Quantlet data set) in programming language Python. This paper's objective is to guide the reader from a casual understanding of basic statistical concepts, such as those typically acquired in undergraduate studies, to a general understanding of Clustering Algorithms, while focusing on Document Clustering applicability.
‘Historical’ cities and heuristics of ‘contemporary design’: reflections on recurrent aporias
Creators: name: Giallocosta, Giorgio
Publisher: name: TECHNE - Journal of Technology for Architecture and Environment
Year: 2016

description: The contribution concerns recurrent aporias about the relations between ‘historical’ cities and ‘contemporary design’, with brief remarks and solution trends. It also highlights the role of the socio-cultural “scenarios” of architectural designs, such as “decision makers” about evaluation options of the latters in relation to the application contexts.
description: TECHNE - Journal of Technology for Architecture and Environment, TECHNE 12 (2016): Architecture Memory Contemporaneity
Low-Threshold and Narrow Linewidth Diffusive Random Lasing in Rhodamine 6G Dye-Doped Polyurethane with Dispersed ZrO$_2$ Nanoparticles
Creators: name: Anderson, Benjamin R.
name: Gunawidjaja, Ray
name: Eilers, Hergen
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on low-threshold and narrow linewidth intensity feedback random lasing in Rhodamine 6G dye-doped polyurethane with dispersed ZrO$_2$ nanoparticles. Depending on the dye/particle concentration, the lasing threshold is (6.8--15.4) MW/cm$^2$ and the linewidth is (4--6) nm. The lasing threshold as a function of nanoparticle concentration is found to follow a power law with an exponent of $-0.496 \pm 0.010$, which is within uncertainty of Burin et al.'s theoretical prediction [Phys. Rev. Lett. 87, 215503 (2001)].
description: 9 pages, 10 figures
Discovery of charge order and corresponding edge state in kagome magnet FeGe
Creators: name: Yin, Jia-Xin
name: Jiang, Yu-Xiao
name: Teng, Xiaokun
name: Hossain, Md. Shafayat
name: Mardanya, Sougata
name: Chang, Tay-Rong
name: Ye, Zijin
name: Xu, Gang
name: Denner, M. Michael
name: Neupert, Titus
name: Lienhard, Benjamin
name: Deng, Han-Bin
name: Setty, Chandan
name: Si, Qimiao
name: Chang, Guoqing
name: Guguchia, Zurab
name: Gao, Bin
name: Shumiya, Nana
name: Zhang, Qi
name: Cochran, Tyler A.
name: Multer, Daniel
name: Yi, Ming
name: Dai, Pengcheng
name: Hasan, M. Zahid
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Kagome materials often host exotic quantum phases, including spin liquids, Chern gap, charge order, and superconductivity. Existing scanning microscopy studies of the kagome charge order have been limited to non-kagome surface layers. Here we tunnel into the kagome lattice of FeGe to uncover features of the charge order. Our spectroscopic imaging identifes a 2x2 charge order in the magnetic kagome lattice, resembling that discovered in kagome superconductors. Spin-mapping across steps of unit-cell-height demonstrates that this charge order emerges from spin-polarized electrons with an antiferromagnetic stacking order. We further uncover the correlation between antiferromagnetism and charge order anisotropy, highlighting the unusual magnetic coupling of the charge order. Finally, we detect a pronounced edge state within the charge order energy gap, which is robust against the irregular shape of the kagome lattice edges. We discuss our results with the theoretically considered topological features of the kagome charge order including orbital magnetism and bulk-boundary correspondence.
Gravity in binary systems at the fifth and sixth post-Newtonian order
Creators: name: Blümlein, J.
name: Maier, A.
name: Marquard, P.
name: Schäfer, G.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: effective field theory: nonrelativistic
binary: coalescence
capture
Hamiltonian
gravitational radiation
weak interaction
conservation law
velocity
gravitation
expansion: higher-order
higher-order: 5
higher-order: 6

description: Binary sources of gravitational waves in the early inspiral phase are accurately described by a post-Newtonian expansion in small velocity and weak interaction. We compute the conservative dynamics to fifth and partial sixth order using a non-relativistic effective field theory. We give predictions for central observables and determine the required coefficients for the construction of an Effective One-Body Hamiltonian, extending the applicability of our results to the late inspiral and merger phases.
Topological barriers for locally homeomorphic quasiregular mappings in 3-space
Creators: name: Apanasov, Boris N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Complex Variables (math.CV)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 30C65, 57Q60, 20F55, 32T99, 30F40, 32H30, 57M30

description: We construct a new type of locally homeomorphic quasiregular mappings in the 3-sphere and discuss their relation to the M.A.Lavrentiev problem, the Zorich map with an essential singularity at infinity, the Fatou's problem and a quasiregular analogue of domains of holomorphy in complex analysis. The construction of such mappings comes from our construction of non-trivial compact 4-dimensional cobordisms $M$ with symmetric boundary components and whose interiors have complete 4-dimensional real hyperbolic structures. Such locally homeomorphic quasiregular mappings are defined in the 3-sphere $S^3$ as mappings equivariant with the standard conformal action of uniform hyperbolic 3-lattices $Γ$ in the unit 3-ball and its complement in $S^3$ and with its discrete representation $G=ρ(Γ)$ in the group of isometries of $H^4 $. Here $G$ is the fundamental group of our non-trivial hyperbolic 4-cobordism $M=(H^4\cupΩ(G))/G$ and the kernel of the homomorphism $ρ\!:\! Γ\rightarrow G$ is a free group $F_3$ on three generators.
description: 21 pages, 8 figures; Corrected typos
Managing the evolution of a urban system. The UNESCO site of Crespi d’Adda
Creators: name: Borgarino, Maria Paola
name: Gasparoli, Paolo
name: Ronchi, Anna Teresa
name: Scaltritti, Matteo
Publisher: name: TECHNE - Journal of Technology for Architecture and Environment
Year: 2016

description: The workers’ village of Crespi d’Adda, registered in the UNESCO World Heritage List in 1995, consists of a large industrial complex of approximately 90,000 square metres, abandoned in 2004 and made up of around a hundred residential buildings which were once inhabited by local workers. The management of the transformation of a “living” urban system of unquestionable historical and documental value, like Crespi d’Adda, is a challenging issue, highly uncertain and controversial but, at the same time, absolutely urgent and necessary. The complexity of the site and the delicate balance between its constitutive elements means we have to consider the protection of the values and the tension towards change not as parts of irreconcilable conflict, but as different needs which must be integrated within a coherent management tool. One of the main points of this strategy, outlined in the Management Plan, is the experimental and normative research on the redevelopment of residential buildings.
description: TECHNE - Journal of Technology for Architecture and Environment, TECHNE 12 (2016): Architecture Memory Contemporaneity
Self-organized explosive synchronization in complex networks: Emergence of synchronization bombs
Creators: name: Arola-Fernández, Lluís
name: Faci-Lázaro, Sergio
name: Skardal, Per Sebastian
name: Boghiu, Emanuel-Cristian
name: Gómez-Gardeñes, Jesús
name: Arenas, Alex
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We introduce the concept of synchronization bombs as large networks of coupled heterogeneous oscillators that operate in a bistable regime and abruptly transit from incoherence to phase-locking (or vice-versa) by adding (or removing) one or a few links. Here we build a self-organized and stochastic version of these bombs, by optimizing global synchrony with decentralized information in a competitive link-percolation process driven by a local rule. We find explosive fingerprints on the emerging network structure, including frequency-degree correlations, disassortative patterns and a delayed percolation threshold. We show that these bomb-like transitions can be designed both in systems of Kuramoto -- periodic -- and Rössler -- chaotic -- oscillators and in a model of cardiac pacemaker cells. We analytically characterize the transitions in the Kuramoto case by combining a precise collective coordinates approach and the Ott-Antonsen ansatz. Furthermore, we study the robustness of the phenomena under changes in the main parameters and the unexpected effect of optimal noise in our model. Our results propose a minimal self-organized mechanism of network growth to understand and control explosive synchronization in adaptive biological systems like the brain and engineered ones like power-grids or electronic circuits. From a theoretical standpoint, the emergence of synchronization explosions and bistability induced by localized structural perturbations -- without any fine-tuning of global parameters -- joins explosive synchronization and percolation under the same mechanistic framework.
description: 17 pages, 9 figures
THE IMPACT OF DEDICATED NORTH CAROLINA STORMWATER PROGRAMS AND REVENUE ON WATER QUALITY IN COMMUNITIES: A LITERATURE REVIEW AND CASE STUDY APPROACH
Creators: name: DeForest, Katherine
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2020

description: Stormwater runoff is formed from rainfall or snow melt flowing over impervious surfaces such as roads, parking lots, and roofs. When this occurs, the water does not soak into the ground, instead, the water moves across these surfaces and carries with it the chemicals, sediment, and trash from everyday human activities. This water, along with the numerous substances it picks up along the way are washed into nearby bodies of water, often without treatment. This runoff can impact the hydrologic cycle and water quality of rivers, streams, and lakes and can lead to significant changes in ecosystem functions, public health, recreation, biological diversity and quality of life in communities. Management of stormwater can bring many benefits; this technical report takes a two-pronged approach in understanding the importance of a dedicated revenue source for stormwater management and its usefulness for local governments in terms of environmental and public health. First, the introduction includes a review of literature to provide background on the stormwater runoff impacts of local water quality and public health as well as the environmental benefits of stormwater management. Second, a case study approach was taken with three of North Carolina’s largest stormwater programs, The cities of Durham, Greensboro and Raleigh. Case studies were used as an analytical strategy to answer my research questions and to test the hypothesis that having a stormwater utility with a dedicated source of revenue is useful for local government in terms of environmental health. Interviews were conducted with each stormwater program, focusing on examining their priorities and discussing how large dedicated revenue sources and years of growth have impacted their communities. This report concluded that having a dedicated stormwater revenue source does contribute to a community’s ability to achieve better stormwater management outcomes which may have an effect on improved water quality and in turn other health benefits to the community.
Cosmology in One Dimension: The Two Component Universe
Creators: name: Shiozawa, Yui
name: Miller, Bruce N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate structure formation in a one dimensional model of a matter-dominated universe using a quasi-newtonian formulation. In addition to dark matter, luminous matter is introduced to examine the potential bias in the distributions. We use multifractal analysis techniques to identify structures, including clusters and voids. Both dark matter and luminous matter exhibit fractal geometry as the universe evolves over a finite range. We present the results for the generalized dimensions computed on various scales for each matter distribution. We compare and contrast the fractal dimensions of two types of matter for the first time and show how dynamical considerations cause them to differ.
description: 14 pages, 5 figures
Nitrogen as the best interstitial dopant among $X$=B, C, N, O and F for strong permanent magnet NdFe$_{11}$Ti$X$: First-principles study
Creators: name: Harashima, Yosuke
name: Terakura, Kiyoyuki
name: Kino, Hiori
name: Ishibashi, Shoji
name: Miyake, Takashi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study magnetic properties of NdFe$_{11}$Ti$X$, where $X$=B, C, N, O, and F, by using the first-principles calculation based on the density functional theory. Its parent compound NdFe$_{11}$Ti has the ThMn$_{12}$ structure, which has the symmetry of space group $I4/mmm$, No. 139. The magnetization increases by doping B, C, N, O, and F at the $2b$ site of the ThMn$_{12}$ structure. The amount of the increase is larger for $X$=N, O, F than for $X$=B, C. On the other hand, the crystal field parameter $\langle r^{2} \rangle A_{0}^{2}$, which controls the axial magnetic anisotropy of the Nd $4f$ magnetic moment, depends differently on the dopant. With increase of the atomic number from $X$=B, $\langle r^{2} \rangle A_{0}^{2}$ increases, takes a maximum value for $X$=N, and then turns to decrease. This suggests that in NdFe$_{11}$Ti$X$, nitrogen is the most appropriate dopant among B, C, N, O, and F for permanent magnets in terms of magnetization and anisotropy. The above calculated properties are explained based on the detailed analysis of the electronic structures of NdFe$_{11}$Ti$X$.
description: 14 pages, 19 figures
Nuclear spin decoherence of neutral $^{31}$P donors in silicon: Effect of environmental $^{29}$Si nuclei
Creators: name: Petersen, Evan S.
name: Tyryshkin, Alexei M.
name: Morton, John J. L.
name: Abe, Eisuke
name: Tojo, Shinichi
name: Itoh, Kohei M.
name: Thewalt, Mike L. W.
name: Lyon, Stephen A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spectral diffusion arising from $^{29}$Si nuclear spin flip-flops, known to be a primary source of electron spin decoherence in silicon, is also predicted to limit the coherence times of neutral donor nuclear spins in silicon. Here, the impact of this mechanism on $^{31}$P nuclear spin coherence is measured as a function of $^{29}$Si concentration using X-band pulsed electron nuclear double resonance (ENDOR). The $^{31}$P nuclear spin echo decays show that decoherence is controlled by $^{29}$Si flip-flops resulting in both fast (exponential) and slow (non-exponential) spectral diffusion processes. The decay times span a range from 100 ms in crystals containing 50% $^{29}$Si to 3 s in crystals containing 1% $^{29}$Si. These nuclear spin echo decay times for neutral donors are orders of magnitude longer than those reported for ionized donors in natural silicon. The electron spin of the neutral donors `protects' the donor nuclear spins by suppressing $^{29}$Si flip-flops within a `frozen core', as a result of the detuning of the $^{29}$Si spins caused by their hyperfine coupling to the electron spin.
Polar Orbits Around Binary Stars
Creators: name: Egan, Greg
Publisher: name: arXiv
Year: 2015
Subjects: subject: Dynamical Systems (math.DS)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Oks proposes the existence of a new class of stable planetary orbits around binary stars, in the shape of a helix on a conical surface whose axis of symmetry coincides with the interstellar axis. We show that this claim relies on the inappropriate use of an effective potential that is only applicable when the stars are held motionless, and that the existence of the torques required to maintain the proposed orbits would have been empirically detected in the motion of artificial satellites in high-inclination orbits.
description: 6 pages
Euastrum bahiense Kurt Forst. & F. Eckert 1964
Creators: name: Ramos, Geraldo José Peixoto
name: Costa, Fabiana De Matos
name: Santos, Maria Aparecida Dos
name: Moura, Carlos Wallace Do Nascimento
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Plantae
Charophyta
Conjugatophyceae
Zygnematales
Desmidiaceae
Euastrum
Euastrum bahiense

description: Euastrum bahiense Kurt Först. & F.Eckert (1964: 349) (Figs 14–16)
 Cell dimensions: length 36–38 μm, breadth 22 μm, isthmus 8,5 μm
 Habitat characteristics: Ephemeral puddle in the mountain.
 Material examined: HUEFS 244147.
 Notes: The main morphological features of Euastrum bahiense are its trapeziform semicells with cell walls uniformly punctate. This species has only been mentioned once, and only for Brazil (Förster 1964), from material collected in the states of Bahia and Goiás. It represents another rare species and only a few specimens were seen in the samples studied.
 Due to its very shallow apical incision and trapeziform semicells, this species can also be interpreted as belonging to the genus Cosmarium (e.g., C. tatricum Racib. [1885: 78]). In spite of their similar cell dimensions, the latter species differs mainly by having concave semicells (lateral margins and apices).
description: Published as part of Ramos, Geraldo José Peixoto, Costa, Fabiana De Matos, Santos, Maria Aparecida Dos & Moura, Carlos Wallace Do Nascimento, 2019, Taxonomic novelties, new records, and rare species of desmids from the Chapada Diamantina region, Brazil, pp. 185-196 in Phytotaxa 391 (3) on page 189, DOI: 10.11646/phytotaxa.391.3.2, http://zenodo.org/record/13726470
New interventions in historical and consolidated urban contexts: low renovation processes for the valorisation of the patina of the time
Creators: name: Boarin, Paola
name: Calzolari, Marta
name: Davoli, Pietromaria
Publisher: name: TECHNE - Journal of Technology for Architecture and Environment
Year: 2016

description: Among the multiple possible interventions on historical and consolidated urban contexts, two different approaches are the most diffused today: interpreting the project as a discontinuity with the surrounding environment, on one side, and reading it as a form of continuity with the existing fabric, on the other. Starting from these methods and through the analysis of the international state-of-the-art in the field of adaptive reuse, the article explores the opportunities of a third possible direction, resulting as synthesis of the above and showing different levels of controlled densification. This new language seems particularly suitable today for supporting deep renovation processes of existing and historic buildings, thanks to its ability of enhancing their tangible and intangible values.
description: TECHNE - Journal of Technology for Architecture and Environment, TECHNE 12 (2016): Architecture Memory Contemporaneity
Numerical Calculation of the Irreversible Entropy Production in Heat Transferring Structures
Numerische Berechnung der irreversiblen Entropieproduktion in wärmeübertragenden Strukturen
Creators: name: Fuchs, Marco
name: Kabelac, Stephan
Publisher: name: Weinheim : Wiley-VCH Verl.
Year: 2023
Subjects: subject: Dissipation
subject: Entropy generation
subject: Heat conduction
subject: Heat exchange
subject: Off-set strip fin
subject: Entropieerzeugung
subject: Off-Set Strip Fin
subject: Wa¨rmeleitung
subject: Wa¨rmeu¨bertragung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: In diesem Beitrag werden zwei verschiedene additiv herstellbare Metallstrukturen hinsichtlich der Entropieproduktionszahl bewertet. Die beiden Strukturen werden bei zwei Temperaturniveaus, 200/80 °C und 700/580 °C, untersucht. Bei dem niedrigen Temperaturniveau ist bei beiden Strukturen insbesondere die Wärmeleitung innerhalb der Struktur der Haupttreiber für die Entropieproduktion. Werden die Temperaturen angehoben, so steigt die gesamte Entropieproduktionszahl stark an, wobei die Dissipation durch Fluidreibung nun die Hauptursache für die auftretenden Verluste in beiden Strukturen ist.
description: Two different additively manufacturable metal structures are evaluated with regard to their entropy production number. The structures are investigated at two temperature levels: 200/80 °C and 700/580 °C. At the low temperature level, the heat conduction within the structure is the main driver for entropy production. If the temperatures are raised, the total entropy production number increases sharply, where the dissipation due to fluid friction is the main cause for the losses occurring in both structures. © 2023 The Authors. Chemie Ingenieur Technik published by Wiley-VCH GmbH.