Category Structure Research Articles

Individual differences in the perception of phonetic category structure predict speech-in-noise performance.

Speech sounds exist in a complex acoustic-phonetic space, and listeners vary in the extent to which they are sensitive to variability within the speech sound category ("gradience") and the degree to which they show stable, consistent responses to phonetic stimuli. Here, we investigate the hypothesis that individual differences in the perception of the sound categories of one's language may aid speech-in-noise performance across the adult lifespan. Declines in speech-in-noise performance are well documented in healthy aging, and are, unsurprisingly, associated with differences in hearing ability. Nonetheless, hearing status and age are incomplete predictors of speech-in-noise performance, and long-standing research suggests that this ability draws on more complex cognitive and perceptual factors. In this study, a group of adults ranging in age from 18 to 67 years performed online assessments designed to measure phonetic category sensitivity, questionnaires querying recent noise exposure history and demographic factors, and crucially, a test of speech-in-noise perception. Results show that individual differences in the perception of two consonant contrasts significantly predict speech-in-noise performance, even after accounting for age and recent noise exposure history. This finding supports the hypothesis that individual differences in sensitivity to phonetic categories mediates speech perception in challenging listening situations.

Lie algebras arising from two-periodic projective complex and derived categories

Let A be a finite-dimensional C-algebra of finite global dimension and A be the category of finitely generated right A-modules. By using of the category of two-periodic projective complexes C2(P), we construct the motivic Bridgeland's Hall algebra for A, where structure constants are given by Poincaré polynomials in t, then construct a C-Lie subalgebra g=n⊕h at t=−1, where n is constructed by stack functions about indecomposable radical complexes, and h is by contractible complexes. For the stable category K2(P) of C2(P), we construct its moduli spaces and a C-Lie algebra g˜=n˜⊕h˜, where n˜ is constructed by support-indecomposable constructible functions, and h˜ is by the Grothendieck group of K2(P). We prove that the natural functor C2(P)→K2(P) together with the natural isomorphism between Grothendieck groups of A and K2(P) induces a Lie algebra isomorphism g≅g˜. This makes clear that the structure constants at t=−1 provided by Bridgeland in [5] in terms of exact structure of C2(P) precisely equal to that given in [30] in terms of triangulated category structure of K2(P).

Psychometric Properties of Fine Motor Function Measure in Children With Cerebral Palsy: A Rasch Analysis.

Our study utilized Rasch Analysis to examine the psychometric properties of 61-items fine motor function measure (FMFM) in children with cerebral palsy (CP). Partial credit model (PCM) was utilized to test the reliability and validity of FMFM. The response pattern of this samples displayed acceptable fitness to PCM. The analysis results supported the assumption of 1-dimensionality of FMFM. Disordered category thresholds were found in 30 items. Differential item functioning (DIF) was detected in 23 items. Participants with different CP subtypes in different age groups may perform in differently responses patterns. The Rasch analysis produces reliable evidence to support the clinical application of FMFM. Some items may produce inaccurate measurements originated from category structures. Difference in age groups and symptom topography may be associated with variation in fine motor ability among children with CP and leading to unnecessary assessment bias. Hence, FMFM items need modifications to calibrate the former item formulation.

Phrase prosody of a southern Russian dialect: Rogovatoe

This paper deals with the phrase intonation of the Southern Russian dialect spoken in the village of Rogovatoe, in the Starooskol’sky district of the Belgorod region. The study is devoted to the analysis of the prosodic structure of various communicative categories: statements, yes-no questions, wh-questions, non-finality, imperative, and vocative. Based on the examination of more than 7000 sentences, I argue that the dialect of Rogovatoe uses only two monotonal pitch accents — H* and L* — as opposed to three bitonal accents of Modern Standard Russian. I also postulate two final boundary tones — H% and L% — for this dialect, while no proof of a phonological distinction between the high and the low phrase accents was found. Finally, the idiom of Rogovatoe employs the phonological distinction between the high and the low initial boundary tone — %H and %L. Therefore, the prosodic system of this Southern Russian dialect is much more focused on the level tones than Modern Standard Russian utilizing predominantly contour (rising and falling) tones.

Mind Melds: Verbal Labels Induce Greater Representational Alignment.

What determines whether two people represent something in a similar way? We examined the role of verbal labels in promoting representational alignment. Across two experiments, three groups of participants sorted novel shapes from two visually dissimilar categories. Prior to sorting, participants in two of the groups were pre-exposed to the shapes using a simple visual matching task designed to reinforce the visual category structure. In one of these groups, participants additionally heard one of two nonsense category labels accompanying the shapes. Exposure to these redundant labels led people to represent the shapes in a more categorical way, which led to greater alignment between sorters. We found this effect of label-induced alignment despite the two categories being highly visually distinct and despite participants in both pre-exposure conditions receiving identical visual experience with the shapes. Experiment 2 replicated this basic result using more even more stringent testing conditions. The results hint at the possibly extensive role that labels may play in aligning people's mental representations.

Coderived and contraderived categories of locally presentable abelian DG-categories

The concept of an abelian DG-category, introduced by the first-named author in Positselski (Exact DG-categories and fully faithful triangulated inclusion functors. arXiv:2110.08237 [math.CT]), unites the notions of abelian categories and (curved) DG-modules in a common framework. In this paper we consider coderived and contraderived categories in the sense of Becker. Generalizing some constructions and results from the preceding papers by Becker (Adv Math 254:187–232, 2014. arXiv:1205.4473 [math.CT]) and by the present authors (Positselski and Št’ovíček in J Pure Appl Algebra 226(#4):106883, 2022. arXiv:2101.10797 [math.CT]), we define the contraderived category of a locally presentable abelian DG-category B\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\ extbf{B}$$\\end{document} with enough projective objects and the coderived category of a Grothendieck abelian DG-category A\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\ extbf{A}$$\\end{document}. We construct the related abelian model category structures and show that the resulting exotic derived categories are well-generated. Then we specialize to the case of a locally coherent Grothendieck abelian DG-category A\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\ extbf{A}$$\\end{document}, and prove that its coderived category is compactly generated by the absolute derived category of finitely presentable objects of A\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$\ extbf{A}$$\\end{document}, thus generalizing a result from the second-named author’s preprint (Št’ovíček in On purity and applications to coderived and singularity categories. arXiv:1412.1615 [math.CT]). In particular, the homotopy category of graded-injective left DG-modules over a DG-ring with a left coherent underlying graded ring is compactly generated by the absolute derived category of DG-modules with finitely presentable underlying graded modules. We also describe compact generators of the coderived categories of quasi-coherent matrix factorizations over coherent schemes.

Unsupervised discriminative projection based on contrastive learning

Feature extraction can effectively alleviate the curse of dimensionality on high-dimensional data. Contrastive learning, as a self-supervised learning method, has garnered widespread attention in recent years. In this study, we propose a new unsupervised feature extraction model based on contrastive learning. We integrate the principle of contrastive learning into the feature extraction model in a novel way without data augmentation or negative samples, defining positive samples more accurately and flexibly. Additionally, we propose new structure preserving terms based on the selected positive samples to preserve the distribution structure of specific categories. An iterative algorithm is designed to solve the proposed model. Numerical experiments on four real datasets demonstrate that our method outperforms existing methods, highlighting its potential in handling high-dimensional data and extracting discriminative features.

On neutral Tannakian subcategories of loop quiver representations

We explored the categories of (twisted) representations of a loop quiver. These representation categories have two choices of tensor structures: Kronecker tensor and Simpson tensor. By studying the rigidity properties, we have provided several examples of (semi-) Tannakian categories using the category of (twisted) representations of a loop quiver for both tensors.We have introduced the concept of essentially finite loop quiver bundles based on the work of Nori, Borne, and Vistoli. As an application, we have given some examples of (semi-) Tannakian categories of equivariant bundles and Hitchin pairs. Additionally, we have defined the notion of H-nflat twisted loop quiver bundles and have established Tannakian category structures for certain classes of varieties.

Locally Coherent Exact Categories

A locally coherent exact category is a finitely accessible additive category endowed with an exact structure in which the admissible short exact sequences are the directed colimits of admissible short exact sequences of finitely presentable objects. We show that any exact structure on a small idempotent-complete additive category extends uniquely to a locally coherent exact structure on the category of ind-objects; in particular, any finitely accessible category has the unique maximal and the unique minimal locally coherent exact category structures. All locally coherent exact categories are of Grothendieck type in the sense of Št’ovíček. We also discuss the canonical embedding of a small exact category into the abelian category of additive sheaves in connection with the locally coherent exact structure on the ind-objects, and deduce two periodicity theorems as applications.

Representing Nursing Practice in EMR/EHRs.

Review of the ISO 18104 technical standard for a Nursing Categorial structure to best represent nursing practice in EMR/EHRs and digital health ecosystems. Application of ISO standard review guidelines in consultation with ISO member stakeholders. Comprehensive views of the nursing practice knowledge domain are presented as mindmaps. Groups of patients can now be identified using the 'type of subject of care' category. The collaborative role of nurses is now recognized. This high level structured information model recognises nursing diagnosis, nursing actions and nurse sensitive outcomes relative to other categories and sub-categories known to influence nursing actions and nurse sensitive outcomes. This nursing practice framework reflects the nursing process. It supports conceptual and logical analysis of patient journey related nursing practice. This updated categorial structure is a good fit with today's information technologies. Its adoption enables the value of nursing services provided to be demonstrated.

NHi-SEGA: n-Hierarchy SEmantic Guided Attention for few-shot learning

Humans excel at learning and recognizing objects, swiftly adapting to new concepts with just a few samples. However, current studies in computer vision on few-shot learning have not yet achieved human performance in integrating prior knowledge during the learning process. Humans utilize a hierarchical structure of object categories based on past experiences to facilitate learning and classification. Therefore, we propose a method named n-Hierarchy SEmantic Guided Attention (nHi-SEGA) that acquires abstract superclasses. This allows the model to associate with and pay attention to different levels of objects utilizing semantics and visual features embedded in the class hierarchy (e.g., house finch-bird-animal, goldfish-fish-animal, rose-flower-plant), resembling human cognition. We constructed an nHi-Tree using WordNet and Glove tools and devised two methods to extract hierarchical semantic features, which were then fused with visual features to improve sample feature prototypes.

Categorical structure of the set of all CFTs

We identify a categorical structure of the set of all conformal field theories (CFTs). In particular, we show that the set of all CFTs has a natural monoidal strict 2-category structure with the 1-morphisms being sequences of deformations and 2-morphisms determined by 0-form symmetries of the CFTs. Published by the American Physical Society 2024

Feedback and observational learning differ in effectiveness during category learning in early school aged children and adults.

When learning new categories, do children benefit from the same types of training as adults? We compared the effects of feedback-based training with observational training in young adults (ages 18-25) and early school aged children (ages 6-7) across two different multimodal category learning tasks: conjunctive rule based and information integration. We used multimodal stimuli that varied across a visual feature (rotation speed of the "planet" stimulus) and an auditory feature (pitch frequency of a pure tone stimulus). We found an interaction between age and training type for the rule-based category task, such that adults performed better in feedback training than in observational training, whereas training type had no significant effect on children's category learning performance. Overall adults performed better than children in learning both the rule based and information integration category structures. In information integration category learning, feedback versus observational training did not have a significant effect on either adults' or children's category learning. Computational modelling revealed that children defaulted to univariate rules in both tasks. The finding that children do not benefit from feedback training and can learn successfully via observational learning has implications for the design of educational interventions appropriate for children.

Integration of Afghan Immigrants in Iran: A Multi-Grounded Theory Study

ABSTRACT This study was conducted to gain a comprehensive understanding of the integration of Afghan immigrants in Iran. Employing a multi-grounded theory approach, data were collected through fieldwork involving 45 participants. The data underwent analysis using inductive coding, conceptual refinement, the construction of categorical structures, and theory condensation. The analysis yielded 21 categories, which were further organized into 6 overarching categories. These categories encompass conditions of origin, conditions of destination, political factors, social agency, immigrant characteristics, and structural and individual consequences. The findings of this research reveal that the integration of Afghan immigrants in Iran operates as an intricate integration ecosystem. In theories of integration, the significance of individual characteristics and the host society’s background as pivotal factors in immigrant integration is highlighted. In these theories, the interplay between immigrant characteristics and the host society’s context is also recognized as a crucial element in the integration process.

Nursing Quality Indicators in Emergency Nursing: A Scoping Review.

Nursing quality indicators (NQIs) are essential for evaluating and managing care, yet few validated NQIs exist for emergency nursing. The dynamic nature of this field demands specific, validated indicators. The purpose of this review was to identify NQIs in adult emergency nursing using Donabedian's quality categories (structure, process, outcome) and explore their validation. A scoping review was conducted including articles from 2010 to February 2023, using the Cumulative Index to Nursing and Allied Health Literature and Medline (Ovid) databases. Among 936 screened articles, 18 were included, identifying 85 NQIs across structure (n=14), process (n=45), and outcome (n=26) in emergency nursing. However, the validation of these NQIs was limited. NQIs evaluate emergency nursing quality, primarily in process assessment. Future work should validate the NQIs identified in this review for adult emergency nursing and search for potential new ones.

Enriched Koszul duality

We show that the category of non-counital conilpotent dg-coalgebras and the category of non-unital dg-algebras carry model structures compatible with their closed non-unital monoidal and closed non-unital module category structures respectively. Furthermore, we show that the Quillen equivalence between these two categories extends to a non-unital module category Quillen equivalence, i.e. providing an enriched form of Koszul duality.

Вл. Соловьев и его время в оценке А.Ф. Лосева

The article considers A.F. Losev's analysis of the philosophy of unity of V. Solovyov, carried out by him in the book “V. Solovyov and his time”. The comparative method and techniques of historical and philosophical reconstruction are used. Methodological guidelines for comparing the views of Solovyov and Losev are formulated. The main attention is paid to the characteristic of Solovyov's theoretical philosophy. The categorical structures of the concept of unity and its basic categories are revealed. The question of to what extent Solovyov's teaching can be considered mysticism is discussed. Losev's characterization of Solovyov's concept as a classical type of philosophy is explained. The national aspect of his theoretical ideas is highlighted. The content of Solovyov's image-concept of Sofia is considered, as well as the critical remarks of Losev, who discovers the contradiction contained in it. It is argued that Solovyov's understanding of evolution cannot be considered as a variant of religious natural philosophy. It is noted that cosmology, developed by the philosopher, organically transforms into anthropology, permeated with the Messianic idea of human vocation. He formulated the idea of the need to save the world through its rebirth under the influence of communion with the divine principle. The fruitful influence of Solovyov's concept on V.F. Erna, Vyacheslav Ivanov, A.N. Berdyaev, S.L. Frank – all subsequent Russian philosophy. The article concludes that A.F. Losev's book is a deep and independent study of V. Solovyov's philosophical concept, and his analysis sets important guidelines for the development of modern theoretical thought.

Характеристика зовнішньої та внутрішньої торгівлі в період військового стану

In the article, the authors investigated the state of foreign and domestic trade, analyzed the foreign trade balance of Ukraine. A special place in the research process is the analysis of the structure of exports and imports of the countries of the world in general and by types of goods. An analysis of the export structure by types of transport was carried out. Particular attention is paid to the indicators of wholesale and retail turnover of domestic enterprises. In the course of the study, the geographical structure of the main contracting states and the product structure of the main categories of goods of foreign economic transactions were determined.

Maternal experiences of pregnant women affected by natural disasters: A modified grounded theory approach.

Pregnant women experience medical and psychological difficulties in their daily lives during disasters. Since the care provided to them in disaster situations is unclear, it is necessary to better understand their experiences. This study aims to identify the maternal experiences of pregnant women during natural disasters. This research employed a modified grounded theory approach. Twenty-three pregnant women, living in disaster-affected areas, were interviewed. The research methods were utilized and interpretive analysis was conducted, resulting in a diagram and storyline to describe the process. The characteristics of the maternal experiences fluctuated between "being unable to face pregnancy because of the disaster response" and "facing the fact of being pregnant." To maintain a fluctuation between their affected life and their pregnant life, it was necessary to control the weighting between "securing a safe and secure place," "encountering support based on pregnancy," and "signs from the fetus." Clarifying the maternal experiences of pregnant women living in disaster areas revealed a multilayered structure of categories and relationships. This study suggests that understanding the structure of fluctuations and control is critical for the nursing practice.

Prototype or Exemplar Representations in the 5/5 Category Learning Task.

Theories of category learning have typically focused on how the underlying category structure affects the category representations acquired by learners. However, there is limited research as to how other factors affect what representations are learned and utilized and how representations might change across the time course of learning. We used a novel "5/5" categorization task developed from the well-studied 5/4 task with the addition of one more stimulus to clarify an ambiguity in the 5/4 prototypes. We used multiple methods including computational modeling to identify whether participants categorized on the basis of exemplar or prototype representations. We found that, overall, for the stimuli we used (schematic robot-like stimuli), learning was best characterized by the use of prototypes. Most importantly, we found that relative use of prototype and exemplar strategies changed across learning, with use of exemplar representations decreasing and prototype representations increasing across blocks.