bluuebunny/crossref_metadata_2025 huggingface dataset:
Toeplitz quotient $C^*$-algebras and ratio limits for random walks
Authors: Dor-On Adam
Published: January 2023

We study quotients of the Toeplitz

C^*

-algebra of a random walk, similar to those studied by the author and Markiewicz for finite stochastic matrices. We introduce a new Cuntz-type quotient

C^*

-algebra for random walks that have convergent ratios of transition probabilities. These

C^*

-algebras give rise to new notions of ratio limit space and boundary for such random walks, which are computed by appealing to a companion paper by Woess. Our combined results are leveraged to identify a unique symmetry-equivariant quotient

C^*

-algebra for any symmetric random walk on a hyperbolic group, shedding light on a question of Viselter on

C^*

-algebras of subproduct systems.
Erratum to: "The minimal exact crossed product"
Authors: Buss Alcides , Echterhoff Siegfried , Willett Rufus
Published: January 2023

We point out some mistakes in our paper [ibid. 23, 2043–2077 (2018; Zbl 1430.46050)]. The most severe one is a gap in our proof that the smallest exact crossed product functor, as constructed in [loc. cit.], is automatically Morita compatible. We were not able to close this gap so far. So, at this time, we cannot conclude that the

C^*

-group algebra

C_{\epsilon_{M}}^*(G)=\mathbb{C}\rtimes_{\epsilon_{M}} G

corresponding to the smallest exact
Morita compatible
crossed-product functor

\rtimes_{\epsilon_{M}}

is equal to the reduced group

C^*

-algebra

C_r^*(G)

.
Compatibility of special value conjectures with the functional equation of zeta functions
Authors: Flach Matthias , Morin Baptiste
Published: January 2023

We prove that the special value conjecture for the Zeta function

\zeta(\mathcal{X},s)

of a proper, regular arithmetic scheme

\mathcal{X}

that we formulated in [
M. Flach
and
B. Morin
, Doc. Math. 23, 1425–1560 (2018; Zbl 1404.14024)] is compatible with the functional equation of

\zeta(\mathcal{X},s)

provided that the rational factor

C(\mathcal{X},n)

we were not able to compute previously has the simple explicit form given in the introduction below.
Matui's AH conjecture for graph groupoids
Authors: Nyland Petter , Ortega Eduard
Published: January 2023

We prove that Matui's AH conjecture holds for graph groupoids of infinite graphs. This is a conjecture which relates the topological full group of an ample groupoid with the homology of the groupoid. Our main result complements Matui's result in the finite case, which makes the AH conjecture true for all graph groupoids covered by the assumptions of said conjecture. Furthermore, we observe that for arbitrary graphs, the homology of a graph groupoid coincides with the

K

-theory of its groupoid

C^*

-algebra.
Galois representations, $(\varphi, \Gamma)$-modules and prismatic F-crystals
Authors: Wu Zhiyou
Published: January 2023

We prove that both local Galois representations and

(\varphi,\Gamma)

-modules can be recovered from prismatic F-crystals, from which we obtain a new proof of the equivalence of Galois representations and

(\varphi,\Gamma)

-modules.
Groups of isometries of the Cuntz algebras
Authors: Conti Roberto , Rossi Stefano
Published: January 2023

We provide a new interpretation of the group of Bogolubov automorphisms of the Cuntz algebras

\mathcal{O}_n

and the group

\operatorname{Aut}(\mathcal{O}_n,\mathcal{F}_n)

of all automorphisms preserving the UHF subalgebra

\mathcal{F}_n\subset\mathcal{O}_n

as the isometry groups coming from two distinct spectral triples on

\mathcal{O}_n

.
Universally defining finitely generated subrings of global fields
Authors: Daans Nicolas
Published: January 2023

It is shown that any finitely generated subring of a global field has a universal first-order definition in its fraction field. This covers Koenigsmann's result for the ring of integers and its subsequent extensions to rings of integers in number fields and rings of

S

-integers in global function fields of odd characteristic. In this article a proof is presented which is uniform in all global fields, including the characteristic two case, where the result is entirely novel. Furthermore, the proposed method results in universal formulae requiring significantly fewer quantifiers than the formulae that can be derived through the previous approaches.
Motivic symmetric spectra
Authors: Jardine J.F.
Published: January 2023

This paper demonstrates the existence of a theory of symmetric spectra for the motivic stable category. The main results together provide a categorical model for the motivic stable category which has an internal symmetric monoidal smash product. The details of the basic construction of the Morel-Voevodsky proper closed simplicial model structure underlying the motivic stable category are required to handle the symmetric case, and are displayed in the first three sections of this paper.
Positively curved Riemannian orbifolds and Alexandrov spaces with circle symmetry in dimension $4$
Authors: Harvey John , Searle Catherine
Published: January 2023

We classify positively curved Alexandrov spaces of dimension

4

with an isometric circle action up to equivariant homeomorphism, subject to a certain additional condition on the infinitesimal geometry near fixed points which we conjecture is always satisfied.

As a corollary, we also classify positively curved Riemannian orbifolds of dimension

4

with an isometric circle action.
Supports for linear degenerations of flag varieties
Authors: Fang Xin , Reineke Markus
Published: January 2023

We determine the set of supports for the flat family of linear degenerations of flag varieties in terms of Motzkin combinatorics.
Virtual equivariant Grothendieck-Riemann-Roch formula
Authors: Ravi Charanya , Sreedhar Bhamidi
Published: January 2023

For a

G

-scheme

X

with a given equivariant perfect obstruction theory, we prove a virtual equivariant Grothendieck-Riemann-Roch formula, this is an extension of a result of
B. Fantechi
and
L. Göttsche
[Geom. Topol. 14, No. 1, 83–115 (2010; Zbl 1194.14017)] to the equivariant context. We also prove a virtual non-abelian localization theorem for schemes over

\mathbb{C}

with proper actions.
Arithmetic statistics and noncommutative Iwasawa theory
Authors: Kundu Debanjana , Lei Antonio , Ray Anwesh
Published: January 2023

Let

p

be an odd prime. Associated to a pair

(E, \mathcal{F}_\infty)

consisting of a rational elliptic curve

E

and a

p

-adic Lie extension

\mathcal{F}_\infty

of

\mathbb{Q}

, is the

p

-primary Selmer group

\mathrm{Sel}_{p^{\infty}}(E/\mathcal{F}_\infty)

of

E

over

\mathcal{F}_\infty

. In this paper, we study the arithmetic statistics for the algebraic structure of this Selmer group. The results provide insights into the asymptotics for the growth of Mordell-Weil ranks of elliptic curves in noncommutative towers.
A modular compactification of the general linear group
Authors: Kausz Ivan
Published: January 2023

We define a certain compactifiction of the general linear group and give a modular description for its points with values in arbitrary schemes. This is a first step in the construction of a higher rank generalization of Gieseker's degeneration of moduli spaces of vector bundles over a curve. We show that our compactification has similar properties as the “wonderful compactification” of algebraic groups of adjoint type as studied by de Concini and Procesi. As a byproduct we obtain a modular description of the points of the wonderful compactification of

\operatorname{PGl}_n

.
Canonical $\beta$-extensions
Authors: Dotto Andrea
Published: January 2023

We compare the level zero part of the type of a representation of

\mathrm{GL}(n)

over a local non-archimedean field with the tame part of its Langlands parameter restricted to inertia. By normalizing this comparison, we construct canonical

\beta

-extensions of maximal simple characters.
Pseudokähler forms on complex Lie groups
Authors: Bremigan Ralph J.
Published: January 2023

Let

G

be a semisimple complex group with real form

G_{\Bbb R}

. We define and study a pseudokähler form that is defined on a neighbhorhood of the identity in

G

and is invariant under left and right translation by

G_{\Bbb R}

.
The theory of half derivators
Authors: Coley Ian
Published: January 2023

We review the theory of derivators from the ground up, defining new classes of derivators which were originally motivated by derivator K-theory. We prove that many old arguments that relied on homotopical bicompleteness hold also for one-sided
half derivators
on arbitrary diagram categories. We end by defining the maximal domain for a K-theory of derivators generalising Waldhausen K-theory.
Ricci DeTurck flow on incomplete manifolds
Authors: Marxen Tobias , Vertman Boris
Published: January 2023

In this paper we construct a Ricci DeTurck flow on any incomplete Riemannian manifold with bounded curvature. The central property of the flow is that it stays uniformly equivalent to the initial incomplete Riemannian metric, and in that sense preserves any given initial singularity structure. Together with the corresponding result by
W.-X. Shi
for complete manifolds [J. Differ. Geom. 30, No. 1, 223–301 (1989; Zbl 0676.53044)], this gives that any (complete or incomplete) manifold of bounded curvature can be evolved by the Ricci DeTurck flow for a short time.
Remarks on quenching
Authors: Kawohl Bernd
Published: January 2023

Consider the parabolic problem

u_t-{\mathrm div} (a(u,\nabla u)\nabla u)=-u^{-p} \qquad (1)

for

t>0, x\in\mathbb R^n

under initial and boundary conditions

u=1

, say. Since

p

is assumed positive, the right hand side becomes singular as

u\to 0

. When

u

reaches zero in finite or infinite time, one says that the solution quenches in finite or infinite time. This article gives a survey of results on this kind of problem and emphasizes those that have been obtained at the SFB 123 in Heidelberg. It is an updated version of an invited survey lecture at the International Congress of Nonlinear Analysts in Tampa, August 1992. To be specific, I shall cover existence and nonexistence of quenching points, asymptotic behaviour of the solutions in space and time near the quenching points, qualitative behaviour, application to mean curvature flow and phase transitions, reaction in porous medium flow etc.

The tools are variational methods and suitable maximum principles. Many of the results presented in this article were obtained with my coauthors Acker, Dziuk, Fila, Kersner and Levine, but related results will also be mentioned.
Pseudodifferential analysis on continuous family groupoids
Authors: Lauter Robert , Monthubert Bertrand , Nistor Victor
Published: January 2023

We study properties and representations of the convolution algebra and the algebra of pseudodifferential operators associated to a continuous family groupoid. We show that the study of representations of the algebras of pseudodifferential operators of order zero completely reduces to the study of the representations of the ideal of regularizing operators. This recovers the usual boundedness theorems for pseudodifferential operators of order zero. We prove a structure theorem for the norm completions of these algebras associated to groupoids with invariant filtrations. As a consequence, we obtain criteria for an operator to be compact or Fredholm. We end with a discussion of the significance of these results to the index theory of operators on certain singular spaces. For example, we give a new approach to the question of the existence of spectral sections for operators on coverings of manifolds with boundary. We expect that our results will also play a role in the analysis on more general singular spaces.
Higher weak (co)limits, adjoint functor theorems, and higher Brown representability
Authors: Nguyen Hoang Kim , Raptis George , Schrade Christoph
Published: January 2023

We prove general adjoint functor theorems for weakly (co)complete

n

-categories. This class of

n

-categories includes the homotopy

n

-categories of (co)complete

\infty

-categories, so these

n

-categories do not admit all small (co)limits in general. We also introduce Brown representability for (homotopy)

n

-categories and prove a Brown representability theorem for localizations of compactly generated

n

-categories. This class of

n

-categories includes the homotopy

n

-categories of presentable

\infty

-categories if

n \geq 2

, and the homotopy

n

-categories of presentable stable

\infty

-categories for any

n \geq 1

.
Itô's formula for noncommutative $C^2$ functions of free Itô processes
Authors: Nikitopoulos Evangelos Alexander
Published: January 2023

In a recent paper, the author introduced a rich class

NC^k(\mathbb{R})

of “noncommutative

C^k

” functions

\mathbb{R} \to \mathbb{C}

whose operator functional calculus is

k

-times differentiable and has derivatives expressible in terms of multiple operator integrals (MOIs). In the present paper, we explore a connection between free stochastic calculus and the theory of MOIs by proving an Itô formula for noncommutative

C^2

functions of self-adjoint free Itô processes. To do this, we first extend P. Biane and R. Speicher's theory of free stochastic calculus – including their free Itô formula for polynomials – to allow free Itô processes driven by multiple freely independent semicircular Brownian motions. Then, in the self-adjoint case, we reinterpret the objects appearing in the free Itô formula for polynomials in terms of MOIs. This allows us to enlarge the class of functions for which one can formulate and prove a free Itô formula from the space originally considered by Biane and Speicher (Fourier transforms of complex measures with two finite moments) to the strictly larger space

NC^2(\mathbb{R})

. Along the way, we also obtain a useful “traced” Itô formula for arbitrary

C^2

scalar functions of self-adjoint free Itô processes. Finally, as motivation, we study an Itô formula for

C^2

scalar functions of

N \times N

Hermitian matrix Itô processes.
Crossover collision of scroll wave filaments
Authors: Fiedler Bernold , Mantel Rolf M.
Published: January 2023

Scroll waves are three-dimensional stacks of rotating spiral waves, with spiral tips aligned along filament curves. Such spatio-temporal patterns arise, for example, in reaction diffusion systems of excitable media type.
Fibrations in sextic del Pezzo surfaces with mild singularities
Authors: Kresch Andrew , Tschinkel Yuri
Published: January 2023

We study sextic del Pezzo surface fibrations via root stacks.
Urine Metabolite of Mice with Orientia tsutsugamushi Infection
Authors: Choi Sangho , Ahn Do-Hwan , Yoo Min-Gyu , Lee Hye-Ja , Cho Seong Beom , Park Hee-Bin , Kim Sung Soon , Chu Hyuk
Published: January 2023

Scrub typhus is an acute febrile, mite-borne disease endemic to the Asia–Pacific region. In South Korea, it is a seasonal disease that occurs frequently in the autumn, and its incidence has increased steadily. In this study, we used a liquid chromatography and flow injection analysis–tandem mass spectrometry-based targeted urine metabolomics approach to evaluate the host response to Orientia tsutsugamushi infection. Balb/c mice were infected with O. tsutsugamushi Boryong, and their urine metabolite profile was examined. Metabolites that differed significantly between the experimental groups were identified using the Kruskal–Wallis test. Sixty-five differential metabolites were identified. The principal metabolite classes were acylcarnitines, glycerophospholipids, biogenic amines, and amino acids. An ingenuity pathway analysis revealed that several toxic (cardiotoxic, hepatotoxic, and nephrotoxic) metabolites are induced by scrub typhus infection. This is the first report of urinary metabolite biomarkers of scrub typhus infection and it enhances our understanding of the metabolic pathways involved.
The Association between Malnutrition and Malaria Infection in Children under 5 Years in Burkina Faso: A Longitudinal Study
Authors: Gebreegziabher Elisabeth , Dah Clarisse , Coulibaly Boubacar , Sie Ali , Bountogo Mamadou , Ouattara Mamadou , Compaoré Adama , Nikiema Moustapha , Tiansi Jérôme , Dembélé Nestor , Lebas Elodie , Roh Michelle , Glidden David V. , Arnold Benjamin F. , Lietman Thomas M. , Oldenburg Catherine E.
Published: January 2023

The relationship between malaria infection and malnutrition is complex. Using data from a randomized controlled trial of 450 children 0–5 years of age in Burkina Faso, we examined the effect of malaria infection on short-term changes in anthropometric measures, the effect of malnutrition on malaria infection, and whether age modified the effect of baseline anthropometric measures on malaria infection. Malaria infection, assessed by blood smear microscopy and weight, height, mid-upper arm circumference, height-for-age z-score, weight-for-age z-score, and weight-for-height z-score were measured at three time points: baseline, 2 weeks, and 6 months. We used generalized estimating equations adjusted for sex, age, breastfeeding, maternal education, and study treatment (azithromycin versus placebo) for all analyses. Interaction terms were used to assess effect modification by age. Among the 366 children with no malaria infection at baseline, 43 (11.6%) had malaria infection within 6 months. There were no important differences in anthropometric measures at 2 weeks and 6 months between those with and without malaria infection at baseline. There were no significant differences in prevalence of malaria infection by baseline anthropometric measures. Age (0–30 months versus 30–60 months) modified the effect of baseline weight and height on malaria infection. Among those aged 0–30 months, for each kilogram increase in weight, malaria infection increased by 27% (95% CI: 6–53%), and for each centimeter increase in height, it increased by 9% (95% CI: 1–17%), but there were no differences for those aged 30–60 months.
Plano de educação BIM
Authors: Magalhães Cristiane Ramos , Cunha Roberto da , Nascimento Regina Helena Malta , Carvalho Ana Cristina Monteiro , Arpon Andreia Soares
Published: January 2023

O Projeto Rio Construção tem como objetivo um conjunto de ações da Firjan com as instituições parceiras para elevar a produtividade e a competitividade das empresas do setor no estado do Rio de Janeiro.  Serão trabalhados cinco eixos prioritários e no eixo tendências, tecnologia e inovação se destaca o programa de capacitação denominado: Rio Construção BIM. O Programa Rio Construção BIM se justifica pela demanda legal por BIM no Brasil de forma associada aos seus benefícios evidenciados pelos resultados das duas pesquisas nacionais do BIM Forum Brasil. Essas pesquisas aconteceram em parceria com o CREA e CAU, que somadas conseguiu mais de dez mil respostas válidas.  Esse resultado reforça os achados da Escuta Técnica e Monitoramento de Tendências, ambos feitos pela Firjan (2022). A 1ª fase deste programa de capacitação profissional e empresarial para adoção BIM se divide em quatro pilares referentes a: Portfólio de Cursos BIM, Disseminação do Conhecimento, Diagnóstico de maturidade BIM e Plano de Implantação BIM. Destacam-se os pilares Diagnóstico de Maturidade BIM e Plano de Implantação BIM. No primeiro as empresas terão disponíveis um instrumento de diagnóstico feito pela mescla, recorte e automatização de documentos existentes e disponibilizados pela academia, mercado e poder público para uso do setor (SUCCAR, 2010; BÖES, 2019; Ministério da Economia, 2019; MAGALHÃES; SALGADO; SANTOS, no prelo, 2022). Este instrumento contempla a tutoria gratuita para preenchimento e leitura de resultados. Presume-se que as empresas que estiverem no Ponto de Adoção BIM (SUCCAR e KASSEM, 2016; SUCCAR e KASSEM, 2017) sentirão com mais intensidade os impactos desta ação. Este diagnóstico de autoavaliação será aplicado por meio de envio, preenchimento e recebimento digitais. As respostas geram um gráfico que situa a empresa nas dimensões processos, pessoas e tecnologia em 5 níveis crescentes de maturidade. No segundo pilar, que é o Plano de implantação BIM, haverá uma capacitação remota, que consolida o entendimento ao associar as metas e usos BIM pretendidos. Neste ponto, com as metas definidas,  as empresas poderão calibrar e monitorar seus avanços e metas longo de sua jornada BIM. O produto desta etapa é um relatório que orienta o ciclo de implementação BIM estabelecido pela empresa. Essa nova fase do PEB estava prevista (ENEBIM, 2018), mas teve seu início postergado para 2022 dada a pandemia COVID-19 e a inauguração do Centro de Referência Firjan SESI SENAI de Construção Civil. Os autores agradecem às equipes, áreas e projetos que antecederam a este; entidades e autores pelos documentos disponibilizados para uso do setor, e a UFRJ – PROARQ / USP por orientar um dos autores em seu programa de doutorado.
Célula BIM FAU/UFJF
Authors: Fantin Natalia Rosa , Paula Frederico Braida Rodrigues de
Published: January 2023

Este artigo faz parte de uma pesquisa em andamento sobre os limites e possibilidades da adoção ampla do BIM pelo curso de Arquitetura e Urbanismo da Faculdade de Arquitetura e Urbanismo da Universidade Federal de Juiz de Fora (CAU/FAU/UFJF) com a implantação da Célula BIM. O Grupo Célula BIM FAU/UFJF tem realizado encontros e promovido discussões desde maio de 2022. A Célula BIM FAU/UFJF realizou a aplicação do diagnóstico de maturidade BIM proposto pela Rede Célula BIM ANTAC e disponibilizado pelo Portal BIM Acadêmico, que é baseado na proposta de Matriz de Maturidade BIM de Succar (2010) e de Boes; Barros Neto; Lima(2021).  Este trabalho apresenta o resultado da maturidade BIM do CAU/FAU/UFJF junto à descrição do processo de identificação das competências BIM.  
No Quadro 1, pode-se observar o preenchimento da matriz e a pontuação associada, de forma a totalizar um índice de 40,71%, o que corresponde, segundo Böes, Barros Neto e Lima (2021) a um nível definido de maturidade e pertencente a uma classificação de média maturidade. Dentro do campo de Processo, é colocado que o CAU/FAU/UFJF trabalha até dez competências, listadas, a seguir, para análise.  Com este levantamento de competências trabalhadas na comunidade do CAU/FAU/UFJF, espera-se subsidiar uma análise mais descritiva e aprofundada do grau de trabalhabilidade atual de cada  competência e uma estimativa de ampliação de competências no curso através de ações de difusão do BIM pela Célula BIM FAU UFJF.
Financing practices of Micro and Small Entrepreneurs using WSM MCDM Method
Authors: TP Krishna Kumar , Ramachandran M , Sivaji Chinnasami , Raja Chandrasakar
Published: January 2023

A small or micro enterprise is usually a one-person show. A partnership is held by a firm or corporation Even in small units, operations are mainly carried out by shareholders or Carried out by one of the directors. In practice, others are sleeping partners or directors, essentially helping out financing. A company is classified If the paid up capital is less than or equal to 20,000 Birr As micro. Similarly, a company has its paid-up capital when less than or equal to Birr 500,000 considered small. However, it is the size of jobs or number of employees in MSE Does not provides information about Key Differences between Small Business and Small Business are scale and size. A small business is a type of small a business employing less than 10 persons, small Businesses with up to 500 employees including Haksever has fewer than 500 employees Define and characterizes a small business with shows following characteristics Management is independent; usually the manager is also the owner. Working Stress Design Method Reinforced A concrete design method is used Concrete is elastic, whereas steel and concrete are elastic in nature, in which the relationship between loads and stresses is linear. Working pressure method (WSM) This traditional design is perfect.
Topical issues of public support for agricultural sector of Kazakhstan
Authors:   L.B. Goncharov Kazakh Automobile and Road Institute, Zhumaxanova K. , Yessenzhigitova R. ,   Al-Farabi Kazakh National University, Duiskenova R. ,   Kazakh  University  of  Transportation  Communications
Published: January 2023

Due to the specific features inherent in agriculture, public support is a prerequisite for the development of modern agro-industrial production and food market, and achievement of the country's food security. In the context of globalization of socio-economic processes, it is impossible to increase the efficiency and competitiveness of domestic agricultural sector without strengthening public financial assistance. Purpose – main directions of state regulation of agroindustrial complex are considered, which make it possible to stimulate the growth of labor productivity, ensure rational consumption rates, economic and physic al availability of food products, combination of imports and domestic production, and realize export potential. Methods – analytical, comparative analysis, generalization, logistical, systematic approach. Results – it is noted that the State is pursuing a systemic institutional policy. Taking into account international requirements, Kazakhstan is building a new system of financing AIC. Problems that need to be addressed as soon as possible are shown: low solvency of the population, significant difference in the level and quality of life of urban and rural residents, underdeveloped market infrastructure, shortage of qualified specialists in rural areas, the need to improve pricing mechanism, and low degree of investment activity. Conclusions – significant amount of allocated state funds are oriented to support crop and livestock production sectors, modernize agricultural machinery, use modern technologies in order to increase competitiveness of agricultural products in Kazakhstani and international markets. When implementing agricultural policy of the Republic of Kazakhstan, the experience and trends in development of agricultural production in developed countries, its profitability are taken into account.
Selection and optimization of distribution channels for small-scale organic producers of fruits and vegetables
Authors:   Kazakh Research Institute of Economy of Agro-Industrial Complex and Rural Development, Klimov Ye. V. , Assilov B. O. ,   S.Seifullin Kazakh Agro Technical University
Published: January 2023

The purpose is to identify and analyze common sales channels for organic products, possibility of introducing alternative marketing strategies for its implementation for small-scale producers of the Almaty region who have made the transition to organic horticulture. The object of the study is international and Kazakhstani experience in building organizational and economic relations regarding production and sale of organic agricultural products. Methods – along with desk research methods, industry information from open access sources, scientific literature, and survey of business entities is summarized. Results – international experience in formation of system for distribution of environmentally friendly products is considered, chain of creation of its value, depending on scale of production, is determined. In Kazakhstan, where production of organic goods is about 20 years and is represented by large agricultural producers of exportoriented grain direction, indirect directions of trade in organic raw materials were accordingly involved. The emerging domestic market for eco-products, involvement of small producers in this sector requires the adoption of effective marketing programs and introduction of a wide range of direct deliveries. The possibilities of introducing such types of marketing as plan of proposals after receiving information about the needs of buyers "Organic box", community-supported farming (CSA - Community-supported agriculture), centralized sales management platform U-pick, organic farmers' markets and sales fairs, shops with organic farms, organic restaurants, public procurement, agritourism and e-commerce are justified. Conclusions – the choice of points for sale of organic products is important management decision that affects economic efficiency of agricultural enterprise. For producers with a small-scale economy, several distribution channels should be developed, when manufacturer works directly with consumers, ensuring close ties.
Compound feed industry of the Republic of Kazakhstan: modernization trends
Authors:   Kazakh  National  Agrarian  Research  University, Mizanbekova S. , Tireuov K. ,   S.  Seifullin  Kazakh  Agro  Technical  University, Aitmukhanbetova D. ,   Kazakh  National  Agrarian  Research  University
Published: January 2023

Relevance – feed industry is important in providing agricultural, industrial enterprises, farms with necessary and high-quality feed. Granular compound feeds are in great demand, which can significantly reduce their losses, consumption, eliminate pathogenic microorganisms. The basis for production of livestock products is supply of first-class fodder. Purpose – the issues of competitiveness of domestic agricultural products, achievement of which is possible with the use of new highly efficient technologies for production of combined feed, are considered. Methods – comparative and system analysis, statistical and economic, logical generalization. Results – the article notes that equipping the resource base in the required volumes is required for proportional and balanced development of farms for processing of grain products and livestock industry - main components of grain and meat product subcomplexes and the link between them. The directions of development of feed industry in Kazakhstan are shown. Emphasis was placed on the need to increase the capacity of large manufacturing enterprises to provide feed products on industrial scale, as well as manufacture of dry nutritional feed mixtures for cattle, pigs in feed mills and factories using their own raw materials, mineral and vitamin supplements. In the republic, the basis for production of high-protein haylage is fodder grain, the value and significance of which are determined from two positions: cereals are used in human nutrition and for obtaining valuable animal protein. Conclusions – the authors state that production volumes, quality and assortment of grain fodder do not meet the needs of livestock sector in concentrated feeds that are complete in terms of nutrition and affordability. New feed mills are being put into operation in the country to supply Kazakhstani agricultural producers with compound feed, without purchasing imported products.
Personnel potential of agricultural sector of the Republic of Kazakhstan: assessment of the current situation
Authors:   I.Zhansugurov Zhetysu University, Kydyrbaeva E. O. , Baidybekova S. K. ,   I.Zhansugurov Zhetysu University, Shomshekova B. K. ,   I.Zhansugurov Zhetysu University
Published: January 2023

Relevance – human resource potential of the country is integral part of resource reserves and has impact on socio-economic development of the States and regions. The main goal of the country's economic and personnel policy is to improve quality of personnel in all sectors of economy, including agricultural sector. The goal is to consider the problems of personnel provision in AIC by applying methodological and scientific approaches. Objectives – determination of factors affecting the level and quality of training of agricultural specialists; development of proposals for the formation of qualified and competitive personnel in the countryside. Methods – analysis and synthesis, absolute and relative indicators, abstract-logical, economic-statistical. The empirical basis of the study is the data of the Department of Statistics of the Eurasian Economic Commission, Ministry of Labor and Social Protection of the Population of the Republic of Kazakhstan, as well as scientific publications on this topic. Results – in the course of the study, analysis was made of the ratio of urban and rural residents for 2017-2021, the number of employed people, average monthly wage for various types of economic activity. Based on a questionnaire survey, reasons for the unwillingness of young people to work in rural areas were identified, and a list of professions and specialties that will be in demand in the future is given. Conclusions – for the development and improvement of personnel planning in agricultural sector, it is necessary to raise the prestige of rural professions; create monitoring and management system for experienced competent workers of agro-industrial complex.
Learning How Research Design Methods Work: A Review of Creswell’s Research Design: Qualitative, Quantitative and Mixed Methods Approaches
Authors: Charli Monanol Survived , Eshete Shimekit Kelkay , Debela Kenenisa Lemi
Published: January 2023

In reviewing the fourth edition of John Creswell’s Research Design: Qualitative, Quantitative and Mixed Methods Approaches (2014), the reviewers found this book to be a comprehensive guide for researchers in the field of social and academic management. They also observed that Creswell expertly explained the concepts described in this book and supported the theories with practical qualitative, quantitative, and mixed approach.
PRAVA PUTNIKA KAO KORISNIKA USLUGA PREVOZA U DRUMSKOM SAOBRAĆAJU
Authors:   University of Kragujevac, Faculty of Law, Miladinovic Zoran
Published: January 2023

In all types of transportation, passengers are the weaker party to the contract of transportation and do not have the possibility to contractually oblige the carrier to fully respects its obligations of orderly execution of transportation. Noticing the problems that passengers as users of transport services encounter in all types of transport, the EU as a regional organization has taken significant steps in the last few years in terms of protecting passengers as a special category of consumers in all types of transport, which means also in road transport. The essence of the adopted regulations is the enhanced protection of passengers in the sense that passengers are recognized (guaranteed) with certain rights when they suffer certain inconveniences or damages due to traffic disruptions. The adopted regulations established a whole range of passenger rights, that is numerous obligations and responsibilities of carriers for non-fulfilment or improper fulfillment of their obligations to passengers, which are mainly the result of traffic disruptions (delayed departure, cancellation of departure, trip interruption, etc.) are established. In essence, it is about increased protection of passengers in relation to current international and national regulations, because carriers are sanctioned for the irregular performance of their contractual obligations. The rights of passengers as users of transportation services in road traffic are regulated by EU Regulation no. 181 from 2011. The essence of this Regulation is that passengers are granted some special rights in the event of a delay in the departure of the means of transport, a delay in the course of transport, an interruption of the trip, etc. By recognizing these special rights, passengers are provided with stronger legal protection compared to the general rules of civil law. In accordance with the determination of the Republic of Serbia to become a member of the EU, which also means that it must harmonize its legislation with EU law, it was to be expected that Serbia would make appropriate changes to the regulations in this area in order to harmonize them with EU law, however, when it comes to the road transport of passengers, Serbia to this day she has not done so. liability of the road carrier.
USLUGE PLATFORMSKOG RADA IZ UGLA SUDSKE PRAKSE
Authors:   University of Kragujevac, Faculty of Law, Urdarević Bojan
Published: January 2023

The use of information and communication technologies leads to the emergence of new occupations and professions, but also to the shift of the employer's focus from the standard employment relationship to other, atypical forms of work. This digitalization of work affects the increase in efficiency and the easier performance of these tasks, but it also leads to the precarization of work and a significantly more difficult way of exercising rights based on work. The special attention of researchers is occupied by platform workers who are in a significantly more difficult position than other workers, given the fact that their labor law status is not recognized and protected by a special law, and that they are, now, considered entrepreneurs who independently provide services on the market, although they are not completely independent in performing their work. Since there are no concrete sources of law regulating the labor law position of platform workers, the courts play a key role in realizing and protecting their rights based on work. In the environment of the absence of appropriate legal norms, the court's task is not at all simple, and therefore the national courts of the member states of the European Union often turn to the European Court of Justice. For this reason, in this paper, the author will discuss several significant judgments of the European Court of Justice that concern platform workers and that show all the complexity of the matter in question.
OSNOVNI PRAVNI I ETIČKI PROBLEMI U VEZI „USVOJENjA EMBRIONA”
Authors:   University of Kragujevac, Faculty of Law, Vlašković Veljko
Published: January 2023

The rules which, under certain conditions, enable the donation of embryos not used in the procedure of homologous medically assisted reproduction, respect to a certain extent the special moral status and limited natural capacity of an embryo. The mentioned possibility is also accepted by domestic law on medically assisted reproduction, so that spouses or cohabitants can agree to donate their unused embryos to another infertile married couple, cohabitants or single woman. From the aspect of embryo recipients, such services are often referred to in the legal literature as "embryo adoption", since their ultimate goal is to establish legal parenthood in favor of the intended parents. Although this expression is terminologically incorrect because "adoption of an embryo" cannot be equated with "adoption" of a child, in this way an attempt is made to preserve, to the extent possible, the moral status of the embryo. In this context, allowing the intended mother of the child to have the experience of giving birth and becoming psychologically attached to a child that is not genetically hers even before its birth, is not ithe primary goal.
NEPROFITNA OBRAZOVNA USTANOVA KAO PRUŽALAC USLUGE – PRAKSA SUDA PRAVDE EVROPSKE UNIJE
Authors:   University of Kragujevac, Faculty of Law, Vujisić Dragan
Published: January 2023

Where a non-profit educational establishment offers its students credit permitting them to pay their registration fees and the cost of study trips in the form of an interest-free instalment repayment plan, does it act as a ‘seller or supplier’ within the meaning of Directive 93/13/EEC? Furthermore, in circumstances in which the student concerned played no active role in the subsequent proceedings to recover the outstanding debt together with interest and a costs indemnity, does a national court have the obligation to examine of its own motion whether a contract comes within the scope of that directive? These issues have arisen in a dispute between an educational establishment and one of its students. They provide the Court with the opportunity further to define the scope of Directive 93/13 and the powers and obligations of national courts under it.
OSTVARIVANjE PRAVA KORISNIKA TELEKOMUNIKACIONIH USLUGA
Authors:   University of Kragujevac, Faculty of Law, Mihajlović Borko
Published: January 2023

The field of electronic communication services in Serbia is characterized by a significant number of complaints filed by consumers. The most common problems encountered by consumers in Serbia in this area are related to the limited right of choice, obstacles in exercising the right to change a service provider, low or inadequate quality of services provided, unfair provisions in consumer contracts, etc. The author analyzes the deficiencies in the existing legal framework, as well as problems in the implementation of existing legal rules, by reviewing the relevant formal sources of law and general business conditions of the largest telecom operators in Serbia. Prior to that, the author carried out the analysis of the definition of the main participants in the relationship created by the provision of telecommunication services, in order to identify the sources of law applicable to the contract on the provision of telecommunication services.
O ZNAČAJU PRINCIPA „ZAGAĐIVAČ PLAĆA“– OSVRT NA POJEDINE ASPEKTE
Authors:   University of Kragujevac, Faculty of Law, Stojanović Predrag
Published: January 2023

The "polluter pays" principle is one of the basic principles in the field of environmental protection both at the level of national and international public policies. The scope and application of this principle have changed over the past half century. There is a whole set of instruments this principle is realized through, both command-control and economic, and the ways of their application are determined differently. In order for the costs of pollution not to be borne by the entire society, the polluter should be responsible for each emission of pollution. Although it is grounded in the rules on objective liability, the "polluter pays" principle is different both in terms of the liability conditions and in terms of the object of protection, and is at a slightly "higher level" than the classical grounds of liability.
Seguridad Alimentaria en Venezuela: La producción y el consumo en el 2023
Authors: Segovia López Emma
Published: January 2023

Se analizan datos sobre la producción y el consumo de alimentos en Venezuela, así como algunas proyecciones para el 2023, en el marco de la Seguridad Alimentaria Nacional. Para ello se consultaron las mediciones y estimaciones de organismos especializados (nacionales e internacionales) y de los diferentes gremios de productores, por medio de los cuales se viene supliendo la inexistencia de cifras oficiales. La Seguridad Alimentaria y la alimentación en Venezuela han sufrido un deterioro en cada uno de sus componentes; desde la disponibilidad, representada por la producción nacional; y el acceso, reflejado en el consumo y comportamiento del consumidor venezolano. Las proyecciones para el 2023 son favorables para avanzar en la recuperación progresiva de la producción agrícola nacional, y de esta manera lograr abastecer el mercado nacional en más del 50% para la mayoría de los rubros de importancia estratégica. Para ello es necesaria la implementación de cambios en las estructuras de la política agrícola del Estado venezolano.
Atributos morfológicos y sensorialesde cacao nativo, Bagua, Perú
Authors: Fernández Jeri Armstrong Barnard , Chávez Quintana Segundo , Julca Otiniano Alberto , Vega Jiménez Nancy
Published: January 2023

Esta investigación se realizó con el objetivo de describir los atributos morfológicos y sensoriales de cacao nativo en la provincia Bagua, Perú. Se llevó a cabo en los distritos: Aramango, Copallín, El Parco, Imaza y La Peca. Se consideró una población de 234 fincas cacaoteras y una muestra estratificada de 70 fincas. En los frutos se analizaron características fisicoquímicas (peso, longitud, diámetro, granos, pH y ºBrix); sensorial (sabores básicos) y sus descriptores (color, forma, constricción basal y ápice). Se usó el Análisis de Componentes Principales para el desempeño de las variables. Los valores para el fruto respecto al peso y diámetro fueron mayores en La Peca y Aramango, respectivamente. Las características del grano predominantemente fueron dulces (más en La Peca) y con una longitud (> 1.2 cm) requerida para elaborar chocolates de calidad. Resaltó en el fruto el color amarillo (88.6%), forma elíptica (80%) y constricción basal ausente (71.4%).
Adopción de áreas verdes como espacio para el desarrollo de competencias: Un estudio de caso
Authors: Torres Matos Leonor , Esteban-Rivera Edwin Roger , Rojas-Cotrina Amancio Ricardo
Published: January 2023

La Educación Inicial es el primer nivel del sistema educativo peruano y busca la formación integral de los estudiantes, por ello la comunidad de la Institución Educativa “Luis Enrique XIX” de San Martín de Porres, Lima, Perú, adoptó un parque abandonado que servía de guarida a personas de mal vivir, para que los estudiantes desarrollasen competencias comprendidas en el diseño curricular nacional. El artículo tiene como propósito interpretar el proceso de adopción de las áreas verdes como un espacio de desarrollo de la competencia de convivencia democrática e indagación, en estudiantes de la Institución Educativa Luis Enrique XIX. Se recurrió al método de estudio de caso, perspectiva metodológica cualitativa y se recogió información mediante la revisión documental, observación y entrevista en profundidad. El proyecto implementado en la institución educativa logró mejorar la convivencia democrática, el cuidado del ambiente (con criterios agroecológicos), promovió la indagación de los estudiantes y la profesionalización docente.
Innovative Strategies in agricultural production units: Knowledge in development of new services and value chains
Authors: Ramírez Molina Reynier Israel , Pinzón Acosta Manuela Valentina , Viloria De la Hoz Keren Daniela , Ríos Pérez Juan David , Lay Raby Nelson David
Published: January 2023

The world faces unavoidable challenges that force organizations to undertake actions that solve, mitigate and reverse problems arising from the lack of social, economic and environmental sustainability, with climate change being one of the most pressing. The implementation of ne w technologies would mean a costly transition, but fundamental and necessary to trace paths that help preserve the planet and the institutions of all kinds that exist in it. The research seeks to describe innovative strategies in agricultural production units as part of the knowledge in the development of new services and value chains. The innovation and adoption of new technologies in processes and consumption patterns will only be possible if companies manage to develop markets thatprovide in their value offer, the component of environmental sustainability in a transversal way in all their activities. The findings sho w that the adoption of innovative strategies in agricultural production companies has been slo w, so the accompanimentof government entities, civil society organizations, academia, research centers and others is crucial to address these problems and generate strategies to solve them.
Tendencias y desafíos en el crecimiento poblacional y urbano a nivel internacional: El caso de México
Authors: Martínez Chapa Oshiel , Quispe Aruquipa Saúl Roberto , Salazar Castillo Jorge Eduardo
Published: January 2023

El presente trabajo emplea datos relativos al crecimiento poblacional y urbano de algunos países, entre ellos México, y da cuenta de los desafíos que plantea la reproducción de patrones persistentes de desigualdad urbana a nivel internacional y de México. La metodología es de tipo cualitativa y cuantitativa y el propósito fundamental es analizar la problemática que significan las tasas rápidas de urbanización. El interés se justifica dadas las necesidades de un presente y futuro sostenible. La hipótesis planteada es que los procesos de urbanización en la mayoría de los países siguen inercias que representan beneficios para ciertos agentes económicos como las empresas prestadoras de bienes y servicios, los desarrolladores urbanos, entre otros; pero desafían al grueso de la población y a los gobiernos en la implementación de políticas de desarrollo territorial. El trabajo concluye destacando la necesidad de aplicar las regulaciones en materia de planeación regional y urbana en la agenda del desarrollo.