bluuebunny/crossref_metadata_2025 huggingface dataset:
A generative design-to-BIM workflow for minimum weight plane truss design
Authors:   Arup Netherlands, Amsterdam (Netherlands), Malgit Berk , Isikdag Umit ,   Department of Informatics, MSGSÜ, İstanbul (Turkey), Bekdaş Gebrail ,   Department of Civil Engineering, Istanbul University-Cerrahpaşa (Turkey), Yucel Melda ,   Department of Civil Engineering, Istanbul University-Cerrahpaşa (Turkey)
Published: August 2022

Structural design has a significant impact on the overall cost of truss structures. In order to reduce the cost of a structure it is important to support designers' decision making starting from the early design phase. In this study, an optimization workflow is proposed, developed and implemented using well known generative design and Building Information Modeling (BIM) tools to achieve a cost-optimal design of a truss structure in the early design phase. Generative design aims to develop products that are lighter, stronger, more efficient and tailored to the specific needs of end users. Generative design tools allow users to create efficient designs via optimizing factors such as cost, weight, energy efficiency and performance. The aim of this study was to develop an optimization workflow to find and model the minimum weight / minimum cost design alternative in the early design phase using generative design, structural analysis and BIM tools in an integrated manner. The goal for the optimization was determined as finding the minimum weight (thus minimum cost) structure among the generated design alternatives. The single span steel truss was selected as the structure to be optimized, and optimization scenarios were prepared and implemented to determine the structural components of the truss with minimum weight. The results demonstrated that through integrated use of structural analysis, generative design and BIM tools minimum-weight truss design can be realized easily and practically.
A viagem espetáculo
Authors: Rosa Jane Petry da , Walkowski Marinês , Perinotto André Riani Costa
Published: August 2022

No atual contexto, em que os olhos dos consumidores estão fixados nas telas, a fruição de uma viagem é exibida, por muitos turistas, como um espetáculo midiático. As redes sociais são utilizadas por produtores de conteúdo digital para dividir com sua audiência modos de um viajar que acaba se convertendo no consumo de informações, produtos e serviços. Esta pesquisa tem como objetivo conhecer as maneiras com que as redes sociais são utilizadas pelos produtores de conteúdo (blogueiros e influenciadores da área do turismo) para compartilhar suas vivências de viagem e refletir sobre como as pedagogias que estão em operação nesses espaços influenciam no consumo do viajar que se processa nas redes. Para o tratamento e análise de dados, praticou-se a análise cultural. De maneira geral, foi possível concluir que nestes espaços são ensinados diferentes modos de consumir o viajar. No entanto, o desejo pela informação rápida e precisa, a necessidade de identificação ou a busca de uma referência e a volúpia pela totalidade, parecem aprisionar os viajantes e estimular produção de um conteúdo formado por listas, dicas, entre outros, levando-os a repetir padrões e consumir um formato de viagem que se repete nas telas de forma frugal, efêmera e uniforme.
Peritumoural Mast Cell Density in Invasive Breast Carcinoma: Possible Antitumourigenic Effect with Potential Role for Immunotherapy
Authors: Anand CD , Muthu S , John JJ , Shivashekar G , Sundaram A , Tamaskar SM
Published: August 2022

Introduction: The interaction of cancer cells and the host within the tumour microenvironment plays a major role in determining the outcome of cancers. Mast cells are part of the innate immune system that interact with tumour cells and known to have pro-tumourigenic and antitumourigenic action through their mediators. Their role in the outcome of invasive breast cancer is still not clear with studies showing both a beneficial role as well as a role in tumour progression. Aim: To assess Mast Cell Density (MCD) in tissues of invasive carcinoma of breast and compare with clinicopathological parameters to infer their biological significance. Materials and Methods: The study was a retrospective cross-sectional study carried out at the Department of Pathology, SRM Medical College Hospital & Research Centre, SRMIST, Kattankulathur, Chennai, India on 51 cases of invasive carcinoma of breast received between January 2011 and July 2013 and the study conducted between August to November 2013. Clinical parameters and histopathological findings were recorded. Mast cells were clearly demonstrated in tissue using Toluidine Blue stain at pH 2.3. The MCD within primary malignant breast tumour tissue (mastectomy specimens, n=51) was assessed using an eyepiece grid and expressed as no. of cells/per sq. mm. Statistical analysis of all parameters was performed using SPSS software (v 17.0) to analyse association of MCD with clinicopathological parameters. Results: The MCD was significantly higher in malignant breast tissue compared to non neoplastic breast tissue (p<0.0001). No significant difference in MCD was observed between tumour size groups (T1, T2, and T3) (p=0.6967). No statistically significant difference in MCD was observed between the four histological types observed (p=0.892). The majority of the tumours were of Grade 2 category (n=37), followed by Grade 3 (n=11) and Grade 1 (n=3). No significant difference in MCD was observed between the three histological grades (p=0.785). The MCD was significantly higher in patients without lymph node metastasis compared to the group with lymph node metastasis (p=0.0023*). The MCD in invasive carcinoma of breast, post-chemotherapy group was significantly higher than that in invasive carcinoma of breast pre-chemotherapy group (p=0.0064). Conclusion: The current study shows significantly increased MCD at the periphery of the carcinoma breast tissue in patients without lymph node metastasis compared to those with lymph node metastasis. Hence, a potential antitumourigenic and beneficial role of mast cells in invasive primary breast carcinoma could be inferred and may serve as one of the prognostic indicators for patient stratification for various treatment options including immunotherapy
A note on relative amenability of finite von Neumann algebras
Authors:   School of Mathematical Sciences, Dalian University of Technology, Dalian, 116024, China, Zhou Xiaoyan , Fang Junsheng ,   School of Mathematical Sciences, Dalian University of Technology, Dalian, 116024, China
Published: August 2022

Let M be a finite von Neumann algebra (respectively, a type II1 factor) and let N⊂M be a II1 factor (respectively, N⊂M have an atomic part). We prove that if the inclusion N⊂M is amenable, then implies the identity map on M has an approximate factorization through Mm(C)⊗N via trace preserving normal unital completely positive maps, which is a generalization of a result of Haagerup. We also prove two permanence properties for amenable inclusions. One is weak Haagerup property, the other is weak exactness.
Jordan maps and pseudospectrum in C∗-algebras
Authors:   Syracuse University, Department of Mathematics,\break 215 Carnegie Building, Syracuse, NY 13244, U.S.A., Bourhim A. , Mashreghi J. ,   D\'epartement de math\'ematiques et de statistique, Universit\'e Laval, Qu\'ebec, QC, Canada, G1K 0A6
Published: August 2022

We show that a surjective map φ between two unital C∗-algebras A and B, with φ(0)=0, satisfies Λε(φ(x1)−φ(x2))=Λε(x1−x2),(x1, x2∈A), where Λε denotes the ε-pseudospectrum, if and only if φ is a Jordan ∗-isomor\-phism. We also characterize maps φ1 and φ2 from A onto B that satisfy Λε(φ1(x1)φ2(x2))=Λε(x1x2),(x1, x2∈A), or some other binary operations, in terms of Jordan ∗-isomorphisms. The main results imply several other characterizations of Jordan ∗-isomorphisms which are interesting in their own right.
On existence of shift-type invariant subspaces for polynomially bounded operators
Authors:   St. Petersburg Branch, V.A. Steklov Institute of Mathematics, Russian Academy of Sciences, Fontanka 27, St. Petersburg, 191023, Russia, Gamal' Maria F.
Published: August 2022

A very particular case of results by K\'erchy (2007) is as follows. Let the unitary asymptote of a contraction T contain the bilateral shift of multiplicity 1. Then there exists an invariant subspace M of T such that T|M is similar to the unilateral shift of multiplicity 1. The proof is based on the Sz.-Nagy--Foias functional model for contractions. In the present paper this result is generalized to polynomially bounded operators. The proof is based on a result by Bourgain (1984).
Dynamical systems and operator algebras associated to Artin's representation of braid groups
Authors:   Department of Mathematics, University of Oslo, NO-0316 Oslo, Norway \textit{and} Department of Computer Science, Oslo Metropolitan University, NO-0130 Oslo, Norway, Omland Tron
Published: August 2022

Artin's representation is an injective homomorphism from the braid group Bn on n strands into AutFn, the automorphism group of the free group Fn on n generators. The representation induces maps Bn→AutC∗r(Fn) and Bn→AutC∗(Fn) into the automorphism groups of the corresponding group C∗-algebras of Fn. These maps also have natural restrictions to the pure braid group Pn. In this paper, we consider twisted versions of the actions by cocycles with values in the circle, and discuss the ideal structure of the associated crossed products. Additionally, we make use of Artin's representation to show that the braid groups B∞ and P∞ on infinitely many strands are both C∗-simple.
On the absolute value of unbounded operators
Authors:   Department of Mathematics, Universit\'e Oran1, B.P. 1524, El Menouar, Oran 31000, Algeria, Boucif Imene , Dehimi Souheyb ,   University of Mohamed El Bachir El Ibrahimi, Bordj Bou Arreridj, Algeria, Mortad Mohammed Hichem ,   Department of Mathematics, University of Oran1, Ahmed Ben Bella, B.P. 1524, El Menouar, Oran 31000, Algeria
Published: August 2022

The primary purpose of the present paper is to investigate when relations of the types |AB|=|A||B|, |A±B|⩽|A|+|B|, ||A|−|B||⩽|A±B| and |¯¯¯¯¯¯¯¯¯¯¯ReA|⩽|A| (among others) hold in an unbounded operator setting. As consequences, we obtain a characterization of (unbounded) self-adjointness as well as a characterization of invertibility for the class of unbounded normal operators. Some examples accompany our results.
Purely infinite corona algebras
Authors:   Department of Mathematics, University of Cincinnati, P. O. Box 210025, Cincinnati, OH, 45221-0025, U.S.A., Kaftal Victor , Ng P.W. ,   Department of Mathematics, Univ. of Louisiana, 217 Maxim D.~Doucet Hall, P.O. Box 43568, Lafayette, Louisiana, 70504-3568, U.S.A., Zhang Shuang ,   Department of Mathematics, University of Cincinnati, P.O. Box 210025, Cincinnati, OH, 45221-0025, U.S.A.
Published: August 2022

Let A be a simple, σ−unital, non-unital C*-algebra, with metrizable tracial simplex T(A), projection surjectivity and injectivity, and strict comparison of positive elements by traces. Then the following are equivalent: \nr{i} A has quasicontinuous scale; \nr{ii} M(A) has strict comparison of positive elements by traces; \nr{iii} M(A)/A is purely infinite; \nr{iii'} M(A)/Imin is purely infinite; \nr{iv} M(A) has finitely many ideals; \nr{v} Imin=Ifin. If furthermore Mn(A) has projection surjectivity and injectivity for every n, then the above conditions are equivalent to: \nr{vi} V(M(A)) has finitely many order ideals.
Vacuum distribution, norm and spectral properties for sums of monotone position operators
Authors:   Dipartimento di Matematica, Universit\`{a} degli studi di Bari, Via E. Orabona, 4, 70125 Bari, Italy, Crismale Vitonofrio , Lu Yun Gang ,   Dipartimento di Matematica, Universit\`{a} degli studi di Bari, Via E. Orabona, 4, 70125 Bari, Italy
Published: August 2022

We investigate the spectrum for partial sums of m position (or gaussian) operators on monotone Fock space based on ℓ2(N). In the basic case of the first consecutive operators, we prove it coincides with the support of the vacuum distribution. Thus, the right endpoint of the support gives the norm. In the general case, we get that the last property for norm still holds. As any single position operator has the vacuum symmetric Bernoulli law, and the whole of them is a monotone independent family of random variables, the vacuum distribution for partial sums of n operators can be seen as the monotone binomial with n trials. It is a discrete measure supported on a finite set, and we exhibit recurrence formulas to compute its atoms and probability function as well. Moreover, lower and upper bounds for the right endpoints of the supports are given.
Simultaneous extension of two bounded operators between Hilbert spaces
Authors:   Faculty of Sciences and Mathematics, University of Ni\v s, Ni\v s, 18000, Serbia, Djiki\'c Marko S. , Nikolov Radenkovi\'c Jovana ,   Faculty of Sciences and Mathematics, University of Ni\v s, Ni\v s, 18000, Serbia
Published: August 2022

The paper is concerned with the following question: if A and B are two bounded operators between Hilbert spaces H and K, and M and N are two closed subspaces in H, when will there exist a bounded operator C:H→K which coincides with A on M and with B on N simultaneously? Besides answering this and some related questions, we also wish to emphasize the role played by the class of so-called semiclosed operators and the unbounded Moore--Penrose inverse in this work. Finally, we will relate our results to several well-known concepts, such as the operator equation XA=B and the theorem of Douglas, Halmos' two projections theorem, and Drazin's star partial order.
Essential normality of principal submodules of the Hardy module on a strongly pseudo-convex domain
Authors:   Department of Mathematics, State University of New York at Buffalo, Buffalo, NY 14260, U.S.A., Wang Yi , Xia Jingbo ,   Department of Mathematics, State University of New York at Buffalo, Buffalo, NY 14260, U.S.A.
Published: August 2022

Let Ω be a bounded, strongly pseudo-convex domain with smooth boundary in Cn. Suppose that h is an analytic function defined on an open set containing ¯¯¯¯Ω. We show that the principal submodule of the Hardy module H2(Ω) generated by h is p-essentially normal for p>n.
Compactness of operators on the Bergman space of the Thullen domain
Authors:   Department of Mathematics and Statistics, The University of Toledo, Toledo, OH 43606-3390, U.S.A., Huo Zhenghui , Wick Brett D. ,   Department of Mathematics and Statistics, Washington University in St. Louis, St. Louis, MO 63130-4899, U.S.A.  Summary: We study compact
Published: August 2022

We study compact operators on the Bergman space of the domain defined by {(z1,z2)∈C2:|z1|2p+|z2|2<1} with p>0 and p≠1. The domain need not be smooth nor have a transitive automorphism group. We give a sufficient condition for the boundedness of various operators on the Bergman space. Under this boundedness condition, we characterize the compactness of operators on the Bergman space of the Thullen domain.
A Beurling theorem for almost-invariant subspaces of the shift operator
Authors:   Universit\'e Paris-Est, LAMA, (UMR 8050), UPEM, UPEC, CNRS, F-77454, Marne-la-Vall\'ee, France, Chalendar Isabelle , Gallardo-Guti\'errez Eva A. ,   Universidad Complutense de Madrid and ICMAT, Departamento de An\'alisis Matem\'atico y Matem\'atica Aplicada, Fa\-cul\-tad de Ciencias Matem\'aticas, Plaza de Ciencias 3, 28040, Madrid, Spain, Partington Jonathan R. ,   School of Mathematics, Univ. of Leeds, Leeds LS2 9JT, U.K.
Published: August 2022

A complete characterization of nearly-invariant subspaces of finite defect for the backward shift operator acting on the Hardy space is provided in the spirit of Hitt and Sarason's theorems. As a corollary we describe the almost-invariant subspaces for the shift and its adjoint.
Nonlinear free L\'evy--Khinchine formula and conformal mapping
Authors:   CNRS, Institut Gaspard-Monge, Univ. Gustave Eiffel, 5 Boulevard Descartes, Champs-sur-Marne, 77454, Marne-la-Vall\'ee cedex 2, France, Biane Philippe
Published: August 2022

There are two natural notions of L\'evy processes in free probability: the first one has free increments with homogeneous distributions and the other has homogeneous transition probabilities (P.~Biane, \textit{Math. Z.} {\bf 227}(1998), 143--174). In the two cases one can associate a Nevanlinna function to a free L\'evy process. The Nevanlinna functions appearing in the first notion were characterized by Bercovici and Voiculescu, \textit{Pacific J. Math.} {\bf 153}(1992), 217--248. I give an explicit parametrization for the Nevanlinna functions associated with the second kind of free L\'evy processes. This gives a nonlinear free L\'evy--Khinchine formula.
Matrix range characterizations of operator system properties
Authors:   Department of Mathematics, United States Naval Academy, Annapolis, MD, 21402, U.S.A., Passer Benjamin , Paulsen Vern I. ,   Institute for Quantum Computing and Department of Pure Mathematics, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
Published: August 2022

For finite-dimensional operator systems ST, T∈B(H)d, we show that the local lifting property and 1-exactness of ST may be characterized by measurements of the disparity between the matrix range W(T) and the minimal/maximal matrix convex sets over its individual levels. We then examine these concepts from the point of view of free spectrahedra, direct sums of operator systems, and products of matrix convex sets.
Decompositions of block Schur product
Authors:   Institute for Mathematics, University of Copenhagen, Copenhagen, DK-2100, Denmark, Christensen Erik
Published: August 2022

Given two m×n matrices A=(aij) and B=(bij) with entries in B(H) for some Hilbert space H, the Schur block product is the m×n matrix A□B:=(aijbij). There exists an m×n matrix S=(sij) with entries from B(H) such that S is a contraction operator and A□B=(diag(AA∗))1/2S(diag(B∗B))1/2. The analogus result for the block Schur tensor product ⊠ defined by Horn and Mathias in \cite{HM} holds too. This kind of decomposition of the Schur product seems to be unknown, even for scalar matrices. Based on the theory of random matrices we show that the set of contractions S, which may appear in such a decomposition, is a \textit{thin} set in the ball of all contractions.
Hereditary C∗-subalgebras of graph C∗-algebras
Authors:   Department of Mathematical Sciences, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark, Arklint Sara E.
Published: August 2022

We show that a C∗-algebra A which is stably isomorphic to a unital graph C∗-algebra, is isomorphic to a graph C∗-algebra if and only if it admits an approximate unit of projections. As a consequence, a hereditary C∗-subalgebra of a unital real rank zero graph C∗-algebra is isomorphic to a graph C∗-algebra. Furthermore, if a C∗-algebra A admits an approximate unit of projections, then its minimal unitization is isomorphic to a graph C∗-algebra if and only if A is stably isomorphic to a unital graph C∗-algebra.
The universal C∗-algebra of a contraction
Authors:   Department of Mathematics, University of Virginia, Charlottesville, 22904, U.S.A. \textit{and} Mathematical Institute, WWU M\", Courtney Kristin ,   {u}nster, M\",   {u}nster, 48149, Germany, Sherman David ,   Department of Mathematics, University of Virginia, Charlottesville, 22904, U.S.A.
Published: August 2022

We call a contractive Hilbert space operator universal if there is a natural surjection from its generated C∗-algebra to the C∗-algebra generated by any other contraction. A universal contraction may be irreducible or a direct sum of (even nilpotent) matrices; we sharpen the latter fact in several ways, including von Neumann-type inequalities for ∗-polynomials. We also record properties of the unique C∗-algebra generated by a universal contraction and show that it can replace C∗(F2) in various Kirchberg-like reformulations of Connes' embedding problem (some known, some new). Finally we prove some analogous results for universal row contraction and universal Pythagorean C∗-algebras.
Unimodality for free multiplicative convolution with free normal distributions on the unit circle
Authors:   Department of Mathematics, Hokkaido University, Kita 10, Nishi 8, Kita-Ku, Sapporo, Hokkaido, 060-0810, Japan, Hasebe Takahiro , Ueda Yuki ,   Department of Mathematics, Hokkaido University, Kita 10, Nishi 8, Kita-Ku, Sapporo, Hokkaido, 060-0810, Japan
Published: August 2022

We study unimodality for free multiplicative convolution with free normal distributions {λt}t>0 on the unit circle. We give four results on unimodality for μ⊠λt: (1) if μ is a symmetric unimodal distribution on the unit circle then so is μ⊠λt at any time t>0; (2) if μ is a symmetric distribution on T supported on {eiθ:θ∈[−φ,φ]} for some φ∈(0,π2), then μ⊠λt is unimodal for sufficiently large t>0; (3) b⊠λt is not unimodal at any time t>0, where b is the equally weighted Bernoulli distribution on {1,−1}; (4) λt is not freely strongly unimodal for sufficiently small t>0. Moreover, we study unimodality for classical multiplicative convolution, which is useful in proving the above four results.
Interpolation without commutants
Authors:   University of Vienna, Faculty of Mathematics, Oskar-Morgenstern-Platz 1, 1090 Vienna, Austria, Szehr Oleg , Zarouf Rachid ,   Aix-Marseille Universite, EA-4671 ADEF, ENS de Lyon, Campus Universitaire de Saint-Jerome, 40 Avenue Escadrille Normandie Niemen, 13013 Marseille, France and Department of Mathematics and Mechanics, Saint Petersburg State University, 28, Universitetski pr., St. Petersburg, 198504, Russia
Published: August 2022

We introduce a ``dual-space approach'' to mixed Nevanlinna--Pick Carath\'eodory-Schur interpolation in Banach spaces X of holomorphic functions on the disk. Our approach can be viewed as complementary to the well-known commutant lifting one of D. Sarason and B. Nagy-C. Foia\c{s}. We compute the norm of the minimal interpolant in X by a version of the Hahn-Banach theorem, which we use to extend functionals defined on a subspace of kernels without increasing their norm. This functional extension lemma plays a similar role as Sarason's commutant lifting theorem but it only involves the predual of X and no Hilbert space structure is needed. As an example, we present the respective Pick-type interpolation theorems for Beurling-Sobolev spaces.
Factors of hypercontractions
Authors:   Department of Mathematics, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India, Bhattacharjee Monojit , Das B. Krishna ,   Department of Mathematics, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
Published: August 2022

In this article, we study a class of contractive factors of\break m-hypercontractions for m∈N. We find a characterization of such factors and it is achieved by finding explicit dilations of these factors on certain weighted Bergman spaces. This is a generalization of the work done by {B.K. Das, S. Sarkar, J. Sarkar}, Factorization of contraction, \textit{Adv. in Math.} \textbf{322}(2017), 186--200.
A note on the free and cyclic differential calculus
Authors:   Saarland University, Department of Mathematics, D-66123 Saarbruecken, Germany, Mai Tobias , Speicher Roland ,   Saarland University, Department of Mathematics, D-66123 Saarbruecken, Germany
Published: August 2022

In 2000, Voiculescu proved an algebraic characterization of cyclic gradients of noncommutative polynomials. We extend this remarkable result in two different directions: first, we obtain an analogous characterization of free gradients; second, we lift both of these results to Voiculescu's fundamental framework of multivariable generalized difference quotient rings. For that purpose, we develop the concept of divergence operators, for both free and cyclic gradients, and study the associated (weak) grading and cyclic symmetrization operators, respectively. On the one hand, this puts a new complexion on the initial polynomial case, and on the other hand, it provides a uniform framework within which also other examples, such as a discrete version of the It\^o stochastic integral, can be treated.
Power-regular Bishop operators and spectral decompositions
Authors:   Departamento de Analisis Matematico y Matematica Aplicada, Facultad de Matematicas, Universidad Complutense de Madrid, Plaza de Ciencias No 3, 28040 Madrid, Spain \textit{and} Instituto de Ciencias Matematicas ICMAT (CSIC-UAM-UC3M-UCM), Madrid, Spain, Gallardo-Gutierrez Eva A. , Monsalve-Lopez Miguel ,   Departamento de Analisis Matematico y Matematica Aplicada, Facultad de Matematicas, Universidad Complutense de Madrid, Plaza de Ciencias No 3, 28040 Madrid, Spain and Inst. de Ciencias Matematicas ICMAT (CSIC-UAM-UC3M-UCM), Madrid, Spain
Published: August 2022

It is proved that a wide class of Bishop-type operators Tϕ,τ are power-regular operators in Lp(Ω,μ), 1⩽p<∞, computing the exact value of the local spectral radius at any function u∈Lp(Ω,μ). Moreover, it is shown that the local spectral radius at any u coincides with the spectral radius of Tϕ,τ as far as u is non-zero. As a consequence, it is proved that non-invertible Bishop-type operators are non-decomposable whenever log|ϕ|∈L1(Ω,μ) (in particular, not quasinilpotent); not enjoying even the weaker spectral decompositions \textit{Bishop property} (β) and \textit{property} (δ).
Response of Freshwater Macroinvertebrate Communities to Various Anthropogenic Stressors in Lolab Streams- A Lotic System of the Indian Himalayan Region
Authors: Majeed Lone Rafiya , Rashid Sumaira , Nisar Bisma
Published: August 2022

This study evaluated the response of freshwater macroinvertebrate communities to several human-induced stresses in a characteristic temperate region with amassed population and population-related pollution. With the help of macroinvertebrate species associated with physicochemical parameters and contaminants in dissolved fractions, we aimed to establish an efficient bioassay approach for evaluating the water quality in the lotic ecosystems of Lolab streams. From the mouth of streams, a rapid scanning method was utilized and physicochemical analysis was done by utilizing APHA,2005. The standard method was used for macroinvertebrate collection and various indices were calculated using software like PAST, and  Pearson correlation, CCA ,PCA were also calculated using PAST software. We discovered considerable differences in physicochemical parameters along a longitudinal gradient, with average mean values like air temperature (17.69℃), water temperature (13.2℃), pH (8.09) dissolved oxygen (7.38mg/L), free CO2(131.96mg/L), total hardness (159.46 mg/L), Ammonical nitrogen(175.6 µg/L), Total phosphorus(62.85 µg/L) with the highest values recorded in populated and largely agriculturally developed areas in the catchment. A total number of 27 taxa were recorded belonging to 8 families. Trichoptera accounted for 36% of the total abundance studied, while Diptera accounted for 26%. Ephemeroptera accounts for 16% of all species. The macroinvertebrates displayed preferences for particular abiotic parameters, highlighting their potential utility in future research as dependable ecological indicators, molded by a synergistic mix of anthropogenic influences and land use intensity.
DE ÍNDIO A NEGRO, OU O REVERSO
Authors: Godi Antônio Jorge Victor dos Santos
Published: August 2022

.
O NEGRO E O PODER -Os negros candidatos a vereador em Salvador, em 1988
Authors: Oliveira Cloves Luiz Pereira
Published: August 2022

.
O SINDICALISMO NA AMÉRICA LATINA: Crise e Futuro
Authors: Zapata Francisco
Published: August 2022

.
O QUILOMBO DO CATUCÁ EM PERNAMBUCO
Authors: De Carvalho Marcus Joaquim M.
Published: August 2022

Esta é uma pequena História do quilombo do Catucá. Ele foi um resultado da luta dos escravos pela liberdade e um subproduto do caos político em Pernambuco, entre 1817 e o final da década de 1830. Morando muito perto do Recife, os quilombolas se tratavam mutuamente por malungos (companheiros da viagem da África) e elaboraram uma série de estratégias de sobrevivência, que incluíam a cooperação da população negra livre e dos escravos dos engenhos próximos. This is a short history of the struggle of slaves for freedom, and a byproduct of the political chaos of Pernambuco between 1817 and the late 1830's. Living near Recife, the maroons treated each other as malungos (shipmates in the middle passage) and devised a series of strategies of survival which included the cooperation from the free black population and slaves of the nearby engenhos. Publicação Online do Caderno CRH:http://www.cadernocrh.ufba.br
Crise global, terceirização e a exclusão no mundo do trabalho
Authors: Carvalho Borges Ângela Maria , Druck Maria da Graça
Published: August 2022

Este texto aborda a questão da terceirização no Brasil, referenciando-se na discussão sobre a crise da sociedade do trabalho. Problematiza acerca do fenômeno da globalização, da crise do fordismo, dos novos paradigmas tecnológicos e organizacionais e do fordismo periférico. E conclui destacando algumas características e conseqüências da terceirização sobre os trabalhadores e o mercado de trabalho no país. Global Crisis, Tertiarization and Exclusion from the World of Work. Ângela Borges Maria da Graça Druck This text approaches the question of the process of tertiarization (subcontracting) of the economy in Brazil from the framework of current discussions on the crisis of the work society. It probes into issues related to the globalization phenomenon, the crisis of Fordism, the new technological paradigms, and to the "peripheral Fordism". And it concludes pointing at some of the characteristics and consequences of the process of tertiarization on the working class and on the Brazilian labor market. Publicação Online do Caderno CRH:http://www.cadernocrh.ufba.br
Por uma História Política da Economia Escravista
Authors: Castro de Araújo Ubiratan
Published: August 2022

Tomando como referência uma Nova História Política, que busca através "O Político" - o "carrefour" onde se entrecruzam e se condensam as mais variadas relações sociais - a percepção do movimento global das sociedades, empreende-se a reconstituição do entrechoque dos interesses dos diversos grupos, secções e classes de uma Bahia escravista do século XIX, que resultou não apenas na reafirmação da escravidão como instituição, mas, também, na formulação e implementação, por parte de uma elite açucareira baiana, de uma verdadeira política de subdesenvolvimento. Towards a Political History of the Economics of Slavery Ubiratan Araujo This article uses as a main reference a new political history which seeks to perceive the global movement of societies through the concept of "The Political" as a "carrefour" where a number of social relations are mutually connected and condensed. As such, it discusses the conflict of interests between the various groups, classes, and class segments in a post-independence yet slaveholding Bahia, viewing it not only as a result of the reaffirmation of slavery as an institution, but also of the formulation and implementation by the Bahian sugar elites of a true politics of underdevelopment. Publicação Online do Caderno CRH:http://www.cadernocrh.ufba.br
Institutos Federais e ciência: compreensão textual discente na leitura de artigo científico
Authors: Pereira de Souza Glauber , Nunes Batista Bruno
Published: August 2022

Os Institutos Federais, pautados na perspectiva do currículo integrado, têm entre seus propósitos promover e divulgar conhecimentos produzidos pela ciência. Dessa forma, tendo em vista que nas práticas sociais o gênero artigo científico constitui uma das principais fontes acadêmicas de divulgação de pesquisas e descobertas, este trabalho objetiva refletir sobre possibilidades de uso desse gênero em atividades de compreensão textual no ensino médio integrado. Para tanto, com ancoragem na metodologia da pesquisa-ação, realizaram-se intervenções pedagógicas planejadas, que contaram com participação de alunos do curso Técnico em Química Integrado, do Instituto Federal Catarinense – campus Brusque. No processo, observou-se dificuldade dos sujeitos-participantes em compreender o conteúdo textual, depreendendo-se que essa dificuldade deriva da ausência de contato anterior com textos pertencentes ao gênero objeto de estudo, de tal modo que parecem válidas novas investidas que promovam contatos sistematizados entre alunos e artigo científico, como forma de possibilitar-lhes melhor habilidade na leitura desse gênero discursivo.
Aprendendo ligações químicas por meio dos alimentos: guia didático para potencializar as inteligências múltiplas no ensino de química
Authors: Nascimento Francisca Georgiana Martins do , Pereira Antônio Igo Barreto
Published: August 2022

O presente artigo tem como objetivo apresentar o “Guia didático aprendendo sobre ligações químicas a partir dos alimentos”, um produto educacional elaborado e aplicado numa pesquisa desenvolvida no Mestrado Profissional em Ensino de Ciências e Matemática (MPECIM) da Universidade Federal do Acre (UFAC), que buscou investigar e discutir as vantagens que o processo de ensino, baseado na Teoria das Inteligências Múltiplas (TIM), pode trazer à aprendizagem de Ligações Químicas no 1° ano do Ensino Médio. Gardner, o principal expoente da TIM, afirma que todas as pessoas apresentam diversos tipos de inteligência ao longo da vida, não só a lógico-matemática e linguística, e que estas podem ser desenvolvidas mediante estímulos recebidos e as capacidades e níveis de competência individuais. O autor ressalta ainda que é papel da educação proporcionar meios para desenvolver essas inteligências. É um tema muito abordado atualmente no Brasil e no mundo, mas poucos estudos são voltados ao ensino de Química. O Guia está organizado na forma de encartes, e contém a orientação pedagógica para a realização do projeto Ligações Químicas e Alimentos, além de sugestões de atividades para potencializar as Inteligências Múltiplas no Ensino de Química. Este material, com todos os anexos, fichas, cartas, e sequências didáticas encontram-se disponível em: https://bit.ly/2Kliwxx. Os resultados da pesquisa indicaram que a aplicação do produto melhorou a motivação, a participação e a aprendizagem dos alunos.
Transformative research focus considered harmful
Authors: Cooper Michael , Licato John
Published: August 2022

Researchers are often encouraged to pursue nothing short of revolutionary advances, and those who work in artificial intelligence are no exception. However, an exclusive focus on revolutionary breakthroughs is often counterproductive in science. As explained by Kuhn almost 50 years ago, dramatic breakthroughs usually rely on a foundation of less dramatic advances, which uncover anomalies and make marginal improvements to current efforts. Progress relies on an essential tension between convergent and divergent thinking, each being complementary aspects of the same process. We argue that an overemphasis on, and exclusive rewarding of, divergent thinking in contemporary AI—whether in the form of rejecting funding for nontransformative research, or peer‐review criteria rejecting papers for lack of novelty—is counterproductive to artificial intelligence and machine learning research, and may even be fundamentally harmful to progress in the field. To reckon with this problem, we recommend increasing funding for iterative improvement of theories, better guidance for reviewers, and more transparency in public funding.
Sustainable Lithium‐Ion Battery Separator Membranes Based on Carrageenan Biopolymer
Authors: Serra João P. , Fidalgo‐Marijuan Arkaitz , Teixeira João , Hilliou Loic , Gonçalves Renato , Urtiaga Karmele , Gutiérrez‐Pardo Antonio , Aguesse Frederic , Lanceros‐Mendez Senentxu , Costa Carlos M.
Published: August 2022

Aiming to improve the sustainability of materials for lithium‐ion batteries (LIBs), this work reports on the development of novel membranes based on iota‐carrageenan biopolymer and their suitability as separator in LIBs applications. The membranes are prepared by freeze‐drying and its morphology, thermal, mechanical, and electrochemical properties are evaluated as a function of polymer concentration in the solution. Porous membranes with a degree of porosity above 90% and different interconnected pore sizes between 50 and 70 µm for both polymer concentrations are obtained. The electrochemical parameters of the membranes are influenced by the carrageenan polymer concentration, being 1.34 mS cm‐1, 3, 7, and 0.48 for ionic conductivity, tortuosity, MacMullin number, and lithium transference number, respectively, for the membrane prepared from the 4 wt% carrageenan content solution. The half‐cells cathodic prepared with the developed membranes show good cyclability and rate capability. The discharge capacity values obtained with the membrane prepared from 4 wt% carrageenan content are 145 and 25 mAh g‐1 at C/10‐ and 1C‐rates, respectively, demonstrating excellent battery cycling performance and long‐term stability. Thus, this work demonstrates that iota‐carrageenan biopolymer membranes developed by freeze‐drying can be used as separators for a next generation of more sustainable batteries.
Evaluation of tropical–temperate transitions: An example of climatic characterization in the Asian Palmate group of Araliaceae
Authors: Coca‐de‐la‐Iglesia Marina , Medina Nagore G. , Wen Jun , Valcárcel Virginia
Published: August 2022

Premise

There has been a great increase in using climatic data in phylogenetic studies over the past decades. However, compiling the high‐quality spatial data needed to perform accurate climatic reconstructions is time‐consuming and can result in poor geographical coverage. Therefore, researchers often resort to qualitative approximations. Our aim was to evaluate the climatic characterization of the genera of the Asian Palmate Group (AsPG) of Araliaceae as an exemplar lineage of plants showing tropical–temperate transitions.

Methods

We compiled a curated worldwide spatial database of the AsPG genera and created five raster layers representing bioclimatic regionalizations of the world. Then, we crossed the database with the layers to climatically characterize the AsPG genera.

Results

We found large disagreement in the climatic characterization of genera among regionalizations and little support for the climatic nature of the tropical–temperate distribution of the AsPG. Both results are attributed to the complexity of delimiting tropical, subtropical, and temperate climates in the world and to the distribution of the study group in regions with transitional climatic conditions.

Conclusions

The complexity in the climatic classification of this example of the tropical–temperate transitions calls for a general climatic revision of other tropical–temperate lineages. In fact, we argue that, to properly evaluate tropical–temperate transitions across the tree of life, we cannot ignore the complexity of distribution ranges.
After the Spring Decision Deluge, SCOTUS's Arbitration Cases Return for More Litigation
Authors: Bleemer Russ
Published: August 2022

The almost‐shocking volume of U.S. Supreme Court arbitration matters accepted, heard, and decided in the 2021‐2022 term—five cases that were granted cert between November and mid‐December just after an initial ADR case was argued—continued to surprise into May and June as the opinions emerged.
Salt‐in‐Salt Reinforced Carbonate Electrolyte for Li Metal Batteries
Authors: Liu Sufu , Xia Jiale , Zhang Weiran , Wan Hongli , Zhang Jiaxun , Xu Jijian , Rao Jiancun , Deng Tao , Hou Singyuk , Nan Bo , Wang Chunsheng
Published: August 2022

The instability of carbonate electrolyte with metallic Li greatly limits its application in high‐voltage Li metal batteries. Here, a “salt‐in‐salt” strategy is applied to boost the LiNO3 solubility in the carbonate electrolyte with Mg(TFSI)2 carrier, which enables the inorganic‐rich solid electrolyte interphase (SEI) for excellent Li metal anode performance and also maintains the cathode stability. In the designed electrolyte, both NO3− and PF6− anions participate in the Li+‐solvent complexes, thus promoting the formation of inorganic‐rich SEI. Our designed electrolyte has achieved a superior Li CE of 99.7 %, enabling the high‐loading NCM811||Li (4.5 mAh cm−2) full cell with N/P ratio of 1.92 to achieve 84.6 % capacity retention after 200 cycles. The enhancement of LiNO3 solubility by divalent salts is universal, which will also inspire the electrolyte design for other metal batteries.
Synergistic promotion of the photocatalytic efficacy of CuO nanoparticles by heteropolyacid‐attached melem: Robust photocatalytic efficacy and anticancer performance
Authors: Liu Changjiang , Abbaspour Sedighe , Rouki Mehdi , Tayebee Reza , Jarrahi Mahbube , Shahri Effat Esmaeili
Published: August 2022

The in situ photocatalytic oxidation of aromatic alcohols to aldehydes by air under visible‐light‐driven condition is an attractive and beneficial route regarding environmental crises and worldwide energy economy. Herein, CuO–melem–heteropolyacid nanophotosensitizer is disclosed as an efficient heterostructured nanocomposite involving H5–nPW10V2O40n− … (melem–NH3+)n ionic liquid, successfully prepared via a facile and straightforward procedure. This nanocomposite is characterized employing routine techniques such as X‐ray diffraction (XRD), Fourier transform infrared (FT‐IR), diffuse reflectance spectra (DRS), transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE‐SEM), and Brunauer–Emmett–Teller (BET). The resultant nanocomposite exhibited superior photocatalytic efficacy than its pristine melem, HPA, and CuO constituents in the in situ photo‐oxidation of benzylic alcohols and in the fast condensation with o‐phenylenediamine to generate a range of 2‐substituted benzimidazoles, as important precursors in the synthesis of important pharmaceuticals under the illumination of a green laser light (λ 535 nm). This study suggests a radical pathway involving reactive species such as •O2− and OH• together with h+ in a photocatalytic process. Stability and reusability experiments along with hot filtration test ensured sufficient reproducibility of the nanophotocatalyst in the reaction medium. At the final part of this study, the in vitro cellular cytotoxicity of CuO–melem–heteropolyacid nanohybrid material was evaluated on A549 human lung cancer cell line with the MTT assay. The distinct reduction in cell viability affirmed cytotoxicity of the nanomaterial against the performed cell line.
Treatment of the metabolic syndrome by siRNA targeting apolipoprotein CIII
Authors: Recio‐López Patricia , Valladolid‐Acebes Ismael , Hadwiger Philipp , Hossbach Markus , Krampert Monika , Prata Carla , Berggren Per‐Olof , Juntti‐Berggren Lisa
Published: August 2022

Apolipoprotein CIII (apoCIII) is increased in obesity‐induced insulin resistance and type‐2 diabetes. Emerging evidences support the advantages of small interfering RNAs (siRNAs) to target disease‐causing genes. The aim of this study was to develop siRNAs for in vivo silencing of apoCIII and investigate if this results in metabolic improvements comparable to what we have seen using antisense oligonucelotides against apoCIII. Twenty‐four siRNAs were synthesized and tested in a dual luciferase reporter assay. The eight best were selected, based on knockdown at 20 nM, and of these, two were selected based on IC50 values. In vivo experiments were performed in ob/ob mice, an obese animal model for diabetes. To determine the dose‐dependency, efficacy, duration of effect and therapeutic dose we used a short protocol giving the apoCIII‐siRNA mix for three days. To evaluate long‐term metabolic effects mice were treated for three days, every second week for eight weeks. The siRNA mix effectively and selectively reduced expression of apoCIII in liver in vivo. Treatment had to be repeated every two weeks to maintain a suppression of apoCIII. The reduction of apoCIII resulted in increased LPL activity, lower triglycerides, reduced liver fat, ceased weight gain, enhanced insulin sensitivity, and improved glucose homeostasis. No off‐target or side effects were observed during the eight‐week treatment period. These results suggest that in vivo silencing of apoCIII with siRNA, is a promising approach with the potential to be used in the battle against obesity‐induced metabolic disorders.
Intergenerational continuity of crime: A comparison between children of discordant siblings
Authors: van de Weijer Steve
Published: August 2022

Background

Various studies have shown that fathers and children show similarities in criminal behaviour, but little is known about the nature of this relationship. By using a family‐based research design, this study controls for familial confounders and gives a better estimate of the extent to which paternal crime has a direct effect on offspring offending.

Aims

To test the extent of any relationship between paternal offending during the childhood of offspring and adolescent offending by those offspring and to examine the effect of potential confounders of this relationship.

Methods

Data were from records held by Statistics Netherlands for 1,155,771 individuals born in the Netherlands between 1996 and 2001. Police data were used to measure paternal offending during the childhood (age 0–11) of this cohort and their adolescent offending (age 12–18). Logistic regression analyses were used to estimate the bivariate relationship between paternal and offspring offending, as well as this relationship after controlling for various demographic and socio‐economic variables. Conditional logistic regression analyses were used to compare children of discordant brothers (N = 9232). By comparing within families rather than between unrelated individuals, all unmeasured familial factors that are shared between these cousins were controlled for.

Results

Offending during adolescence was about three times as likely among offspring whose fathers had offended while they were 11 years old or younger than among adolescents with no such paternal problem (OR: 3.21, CI 3.17–3.26). This relationship was attenuated after controlling for measured confounders (OR: 1.78, CI 1.75–1.81) and for unmeasured familial confounders (OR: 1.47, CI 1.36–1.59), but remained significant.

Conclusions

Paternal offending has an association with offspring offending, but this is small after controlling for measured socio‐economic and unmeasured familial confounders. Previous studies that did not control for unmeasured familial confounders seem likely to have overestimated the effect of paternal crime on their offspring’s offending. This has implications for interventions for the offspring. If confined to mitigating the negative consequences of paternal offending, they are likely to have limited effectiveness.
Wetting of Paper Towels: A Method to Determine the Two‐Dimensional Absorption Capacity
Authors: Abedsoltan Hossein
Published: August 2022

This study proposes a method to determine the two‐dimensional absorption capacity of paper towels. Individual plies were tested to minimize the effects of transverse wicking on wetting. The method involves arbitrary point source injection of liquid into the towel surface while recording microscopic images of the wetted areas. The samples were selected from the main manufacturing processes: conventional wet pressing and through‐air drying. Wetting graphs that illustrate the dynamic and static wetting behaviors were generated. The driving force was found to have a negligible effect on the maximum wetted area. The maximum wetted area and the paper grammage were used to determine the two‐dimensional absorption capacity. The results were validated by the basket‐immersion test method.