bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of the electromagnetic properties of a transverse insert based on a planar layer of a chiral metamaterial in a rectangular waveguide
Authors: Buchnev Ivan Yu. , Osipov Oleg V.
Published: March 2023

The paper considers the solution of the problem of diffraction of the fundamental wave of a rectangular waveguide H10 on a planar transverse insert based on a chiral metamaterial created on the thin-wire conducting helices. To describe the chiral layer, a particular mathematical model is constructed that takes into account the properties of heterogeneity and dispersion of the permittivity and the chirality parameter of the artificial media. The well-known in physics model of Maxwell Garnett was used to take into account the heterogeneity property. To take into account the permittivity dispersion the Drude–Lorentz formula was applied and for the chirality parameter was used the Condon formula. The problem of diffraction of the rectangular waveguide main wave on a planar layer of a chiral metamaterial was solved by the partial regions method and was reduced to a system of linear algebraic equations for unknown reflection and transmission coefficients. It is shown that in the presence of a transverse chiral layer in the waveguide structure, a wave of the H01 type cross-polarized with respect to the main one arises. An analysis of the frequency dependences of the moduli of the reflection and transmission coefficients of the fundamental H10 and cross-polarized H01 showed that in some narrow frequency intervals in the single-mode gap, situations arise when the fundamental wave type is replaced from H10 to H01 near resonant frequencies. The transmission line under consideration can find application in the creation of frequency selective filters and polarization converters in the microwave range.
Pengaruh Literasi Digital dan Kemandirian Belajar terhadap Hasil Belajar Ekonomi
Authors: Nisa Zahratun , Fitrayati Dhiah
Published: March 2023

Penelitian ini dilatarbelakangi oleh adanya permasalahan dalam hasil belajar ekonomi berupa nilai ulangan harian, dimana masih banyak siswa yang belum mencapai nilai KKM yang ditetapkan. Penelitian ini bertujuan untuk menganalisis pengaruh literasi digital terhadap hasil belajar ekonomi dan menganalisis pengaruh kemandirian belajar terhadap hasil belajar ekonomi. Subjek penelitian ini adalah siswa kelas X IPS dan XI IPS SMAN 1 Kelua berjumlah 97 siswa. Teknik pengumpulan data untuk variabel literasi digital dan kemandirian belajar menggunakan kuesioner, sedangkan variabel hasil belajar ekonomi menggunakan dokumentasi berupa nilai ulangan harian mata pelajaran ekonomi. Data dianalisis menggunakan teknik analisis regresi linier berganda. Uji hipotesis pertama diperoleh literasi digital memiliki pengaruh yang signifikan terhadap hasil belajar ekonomi, sedangkan pada uji hipotesis kedua diperoleh kemandirian belajar tidak memiliki pengaruh yang signifikan terhadap hasil belajar ekonomi.
Optimalisasi Media Pembelajaran Berbasis Google Classroom Sebagai Media Pembelajaran di SMP Negeri 2 Pucuk di Era Pandemi
Authors: PS Alaika M. Bagus Kurnia , Zahra Miladi Aini , Rizkiyah Rinta Rizkiyah , Wachidah Akrima Wachidah , Jannah Miftahul Jannah , Ardhana Ilham Aly
Published: March 2023

Akibat pandemi covid-19 ini sistem pembelajaran mengalami perubahan, yang awalnya sudah terstruktur dengan rapi menjadi tidak berjalan, dan mengharuskan untuk pembelajaran daring. Salah satu solusi saat daring yang dikonsumsi oleh praktisi pendidikan adalah google classroom. Maksud dari penelitian yang dilakukan adalah (1) guna mengetahui kemanfaatan serta efektifitas layanan fitur google classroom. (2) untuk mengetahui proses pengoptimalisasian pembelajaran menggunakan google classroom. (3) Untuk mengetahui respon siswa dalam pelaksanaan pembelajaran menggunakan fitur google classroom. penelitian ini menggunakan metode penelitian tindakan kelas. Google Classroom masih sangat efektif digunakan pada saat terjadi pandemi Covid-19 sebagai mana keadaan saat ini khususnya di SMP Negeri 2 Pucuk.Kata Kunci: Google Classroom, Pandemi Covid-19.
Proposal of an inventory control system based on the flow of materials in a warehouse using Excel/VBA
Authors: Shinsato Junior Charles , De Mattos Veroneze Gabriela , Maciel da Costa Craveiro Joaquim , Maciel Neto Thiago
Published: March 2023

Inventory management systems are indispensable for most companies since the cost of implementing robust systems, such as the Warehouse Management System (WMS), leads companies to invest a high implementation value depending on the structure that best suits their internal flow. Thus, this article sought to present the implementation of a more viable software for material management in one of the warehouses of an assembler of the two-wheeler hub in Manaus, where no warehouse system controls the flow of materials and their addressing. The Excel program developed the system using the programming language linked to Microsoft Office: Visual Basic for Applications (VBA). This system presented itself as an alternative with a more viable implementation cost than a robust system such as the WMS. In addition, the system’s functioning flow was developed based on the process already done in the stock, facilitating its implementation and acceptance by the operators
POLÍTICAS CURRICULARES PARA O ENSINO MÉDIO NO BRASIL
Authors: Habowski Fabiane , Leite Fabiane de Andrade
Published: March 2023

Este artigo tem o objetivo de mapear os estudos que tratam das políticas curriculares para o Ensino Médio no Brasil. Por meio de uma pesquisa de natureza qualitativa, realizou-se uma revisão bibliográfica, tendo como objeto teses e dissertações disponíveis na Biblioteca Digital Brasileira de Teses e Dissertações (BDTD), produzidas a partir de 2009, período em que políticas públicas para o Ensino Médio foram intensificadas no Brasil. O processo de análise de conteúdo possibilitou identificar duas categorias: reflexões sobre as políticas educacionais curriculares para o Ensino Médio no Brasil e interfaces entre objeto de estudo e tipo de pesquisa acerca de políticas educacionais curriculares do Ensino Médio. Os resultados apontam para um afastamento do que está proposto nas políticas e o que é realizado no contexto escolar, contribuindo para entendimentos equivocados no processo de construção/implementação de políticas para o Ensino Médio na Educação Básica brasileira.
MEMÓRIA, ESPAÇO E A BUSCA DE IDENTIDADE NO ROMANCE "OS QUE BEBEM COMO OS CÃES" DE ASSIS BRASIL
Authors: Ribeiro Francigelda
Published: March 2023

Este artigo apresenta uma análise do romance Os que bebem como os cães do escritor piauiense Assis Brasil. A apreciação do romance se realiza de modo alinhado a algumas contribuições teóricas do filósofo francês Paul Ricœur expostas no livro A memória, a história, o esquecimento (2000). O percurso metodológico primou por uma abordagem analítica na qual foram apontados questionamentos acerca do processo de recordação vivenciado pelo personagem central, observando a tênue fronteira estabelecida entre memória e imaginação. Como resultado, é possível perceber que, dadas as especificidades da narrativa, as imagens evocadas podem advir de memórias ou de devaneios, comprometendo a identidade revelada.
Atrakcyjność projektu metodologii praktycznej i epistemologii cnoty dla badań historyczno-gospodarczych
Authors: Bębnowski Damian
Published: March 2023

Ewa Domańska, Professor at the Adam Mickiewicz University in Poznań (Poland)
and Stanford University (USA), historian of historiography and methodologist of
history, formulated interesting comments about the state of humanities and social
sciences. The development of interdisciplinary research causes the interpenetration
of different disciplines. Although this kind of research is promising, inspiring as
well as influencing the development of science, careless research may cause some
threats in the longer term. According to Domańska, the lack of qualifications and
reliability in this area (especially in the area of theory and methodology) undermines
the authonomy of the main disciplines and decline in the professionalism of research.
This led the author to create the project, which aims to defend the independence
of the threatened disciplines as well as their ‘re-professionalisation’. It can be
achieved by strongly emphasizing the role of theory in science; a strong embeddement
of a discipline in the theory. Domańska’s concept can be a recipe, which is
a dichotomic project. Firstly, it supposes a ‘practical methodology’, which is a constructing
of the theory thanks to empirical research material. Secondly, it supposes
a ‘virtue epistemology’, which is the ethical aspect of the researcher’s attitude and
his work.
The aim of the paper is to discuss Domańska’s project and underline the originality
of her concept in the context of economic and social sciences. The economic
history is a specific discipline which develops at the crossroad of history and economics.
It lets me put forward the thesis that Domańska’s suggestions are relevant
to the research of economic history. I will show what cognitive chances are the
result of the ontology of economic history. I will question what the possible threats
are for the main disciplines (history and economics) as a result of the lack of professionalism
in the interdisciplinary research of the economic past, and ask if Domańska’s
project is attractive for the economic history research thanks to the strong
setting in the ‘practical methodology’ in the theory. I also ask what the role of new
theoretical approaches in that area is, and whether it is possible to formulate innovatory
conceptions in the economic history. Finally, I question the role of ‘virtue
epistemology’ or the ethical aspect of an economic historian’s work.
Kultura zaufania w relacji firma – pracownik
Authors: Młokosiewicz Marta
Published: March 2023

A culture of trust leads to better use of knowledge and human skills, so important
in an economy based on knowledge, innovation and change. Polish society is characterized
by a culture of distrust, and this atmosphere translates into interpersonal
relationships in companies. The challenge is therefore to recognize the conditions
for building and strengthening organizational trust. Trust is related to personal reliability,
which means respecting moral norms and the rights of others. Focusing on
the company-employee relationship, in this paper the author has set herself the goal
of recognising how – in the context of ethical standards – the culture of trust is
shaped in companies in Poland. The introductory – theoretical – part of the study
looks at the role of trust in the functioning of an organization. The empirical part
includes the available research on moral standards and trust in Polish enterprises.
The summary points to the conclusions of the analysis undertaken.
MAXELL J. FRY. Money, interest, and banking in economic development. Baltimore: Johns Hopkins University Press, 1988
Authors: Gonzales Arrieta Gerardo M.
Published: March 2023

La reseña no presenta resumen.
Las características del adulto mayor peruano y las políticas de protección social
Authors: Olivera Javier , Clausen Jhonatan
Published: March 2023

El presente documento busca, en primer lugar, realizar una caracterización de las condiciones socioeconómicas de la población de adultos mayores en el Perú con énfasis en la situación de pobreza y desprotección social de este segmento de población. El análisis de la Encueta Nacionalde Hogares (Enaho) 2011 revela que la mayor cantidad de personas mayores de 65 años que se encuentran en situación de extrema pobreza residen en la sierra rural. Del mismo modo, se observa que únicamente el 1% de adultos mayores pobres extremos tienen acceso a algún tipo de pensión; y que la mayor proporción adultos mayores en situación de pobreza extrema viven en hogares de 1 o 2 miembros, lo cual acentúa su vulnerabilidad. En segundo lugar, se realiza una revisión de las principales intervenciones de política orientadas a los adultos mayores en Perú, incluyendo políticasde gran escala como la pensión social Pensión 65 e intervenciones más acotadas relacionadas al bienestar general y derechos de los adultos mayores. Finalmente, revisamos la literatura y políticas dirigidas al adulto mayor de otros países y mostramos algunas evidencias se sus impactos, lo cual puede ser útil para proponer nuevos programas dirigidos a los adultos mayores en Perú.
Bird mortality on powerlines in the Altai Republic and Altai Kray of Russia in 2022
Authors:   Sibecocenter LLC, Shnayder Elena P.
Published: March 2023

In October of 2022, 419 km of 6-10kV powerlines were inspected in the Altai Republic and Altai Kray of Russia. The most favorable situation was found in Ulagan District of the Altai Republic. In other districts – Ust-Kan (Altai Republic), Uglovskiy, Solonesh, Rubtsovsk and Petropavlovsk (Altai Kray), numerous violations were observed. In total, 211 dead birds were found killed by electrocution. Nine out of them belong to species enlisted in the Red Data Book of Russia including one Saker Falcon enlisted as Primarily Valuable Species. Along this work we revealed the most dangerous lines required immediate retrofitting with Bird Protection Devices (BPDs) or renovation of already existing ones. The highest priority status was assigned to 6 powerlines or parts of them with a total length of 60 km, that got in total 401 unsafe utility poles. Those line were the cause of death of all Red-listed individuals and caused maximum damage to wildlife expressed in financial equivalent. The total damage to wildlife from all powerlines inspected was equal to 4 463 840 rubles (around $58 735 / €54 000) without approximation on previous season. A scheme of bird-dangerous parts of powerlines / single poles with coordinates was developed for all inspected lines.
Bazı Tatlı Sorgum [Sorghum bicolor var. saccharatum (L.) Mohlenbr.] Genotiplerinin Selülozik Biyoetanol Verimlerinin Belirlenmesi
Authors: AKSOY Mine , ÇELİK Ayşegül , DOK Mahmut , YÜCEL Celal , ÖKTEM Abdullah
Published: March 2023

Bu çalışmada, GAP ve Çukurova koşullarında yetiştirilen tatlı sorgum [Sorghum bicolor var. saccharatum (L.) Mohlenbr.] genotiplerinin biyokütlesinin bazı özelliklerinin ve teorik selülozik biyoetanol potansiyelinin belirlenmesi amaçlanmıştır. Bu bağlamda, yurt içi ve yurt dışındaki değişik kaynaklardan temin edilen 49 farklı tatlı sorgum [S. bicolor var. saccharatum (L.) Mohlenbr.] genotipi materyal olarak kullanılmıştır. Tarla denemeleri 2015 yılında, Çukurova (Adana) ve GAP (Şanlıurfa) lokasyonlarında ikinci ürün koşullarında yürütülmüştür. Tatlı sorgum genotiplerinin biyokütlesinin kuru madde bazında; nem, kül, selüloz, hemiselüloz ve lignin analizleri yapılmış; teorik selülozik biyoetanol verimleri hesaplanmıştır. Çalışma bulgularına göre, incelenen tüm özellikler bakımından her iki lokasyonda da genotipler arasındaki farklılık p≤0.01 seviyesinde istatistiki olarak önemli bulunmuştur. Çukurova lokasyonunda genotiplerin nem içeriği % 77.21-90.82, kül içeriği % 5.26-11.01, selüloz içeriği % 20.42-33.27, hemiselüloz içeriği % 15.90-24.58, lignin içeriği % 3.53-9.67, teorik selülozik biyoetanol verimi 121.5-192.1 L ton-1 biyokütle ve 205.9-1428.5 L da-1 arasında değişmiştir. GAP lokasyonunda ise genotiplerin nem içeriği % 64.80-88.07, kül içeriği % 4.60-10.46, selüloz içeriği % 18.35-27.92, hemiselüloz içeriği % 15.60-24.22, lignin içeriği % 3.83-9.12, teorik selülozik biyoetanol verimi 115.9-164.1 L ton-1 biyokütle ve 352.7-1348.1 L da-1 arasında değişmiştir. Çukurova lokasyonunda UNL-hybrid-3, PI579753 ve Theis genotiplerinin, GAP lokasyonunda ise No41, Corina ve Topper 76 genotiplerinin diğer genotiplere göre daha yüksek teorik biyoetanol verimine sahip oldukları saptanmıştır. Ayrıca Cowley, M81-E, PI579753, Smith, Theis, Topper 76, No91 ve No41 genotiplerinin her iki lokasyonda 1000 L da-1 üzerinde teorik biyoetanol verimine sahip ortak genotipler oldukları belirlenmiştir. Çalışma sonucunda, Türkiye koşullarında farklı lokasyonlarda birim alandan yüksek biyoetanol verimi ile tatlı sorgum bitkisinin, farklı enerji kaynaklarının arayışının daha da arttığı günümüzde önemli bir alternatif tarımsal kaynak olabileceği sonucuna ulaşılmaktadır.
Creation of calculation models for elements made of hyper elastic materials used on railway transport
Authors:   Bryansk State Technical University (BSTU), Kravtsov Sergey Andreevich , Boldyrev Alexey Petrovich ,   Bryansk State Technical University (BSTU), Lozbinev Fedor Yuryevich ,   Bryansk State Technical University (BSTU)
Published: March 2023

The paper describes a method for calculation of elements made of hyper elastic materials used on railway transport. Approbation of the method is carried out at calculation of polymer elements of supporting units for cushion of automatic couplers. As an object the authors have considered a polymer element of the PMKP-110 cushion that refers to T1 class. In operation of such cushion polymer elements unit is exposed to highly non-linear deformation, that is why at calculation the authors have used a program complex that implements the finite element method with the consideration for high non-linearity. A model of the polymer element calculated according to the suggested method is confirmed by experimental data. Deviations are permissible.
Optimization of logistics in forwarding zone with the use of simulation modeling
Authors:   Ural state university of railway transport (USURT), Shipulin Alexander Valeryevich , Tushin Nikolay Andreevich ,   Ural state university of railway transport (USURT)
Published: March 2023

The paper considers experience of increase of labour productivity in an enterprise with a short production cycle. It underlines drawbacks of analytical methods of productivity calculation. The authors have analysed influence of stochastic processes on tact and cycle time. They have presented a method for optimization of logistics in a forwarding zone with the use of a simulation model. As a result, the authors have considered possibilities of the simulation system for verification of decisions.
Test control of sensors of mass air flow rate for modern internal combustion engines
Authors:   South Ural State Agrarian University (SUrSAU), Gritsenko Alexander Vladimirovich , Glemba Konstantin Vyacheslavovich ,   South Ural State Agrarian University (SUrSAU), Medvedev Alexey Nikolaevich ,   Chelyabinsk Higher Military Aviation Red Banner School of Navigators, Burtsev Alexander Yuryevich ,   branch of the T. F. Gorbachev Kuzbass State Technical University in Belovo, Rakhimov Zhanat Sagyndykovich ,   South Ural State Agrarian University (SUrSAU), Emelyanova Anastasiya Ivanovna ,   South Ural State Agrarian University (SUrSAU)
Published: March 2023

The authors have considered typical designs of sensors of mass air flow rate used in motor vehicles and established that the most perfect are film-type sensors. Analysis of modern means and methods for diagnostics of mass air flow rate sensors showed that there are no methods for their nondestructive inspection. The study presented in the paper is based on the use of a developed measuring device for creation of test modes. As controlled parameters the authors have selected a mass air flow rate, voltage from sensor test terminal, a position of the butterfly throttle, hourly consumption of fuel at variation of the ICE crankshaft rotation speed at the position of the butterfly throttle from 0 to 100 %. It is established that the most sensitive parameters are the mass air flow rate and the voltage of the sensor control contact.
Modeling the boundaries of ascending swirling flows
Authors:   Ural state university of railway transport (USURT), Deryabin S. L. , Mezentsev A. V. ,   Ural state university of railway transport (USURT)
Published: March 2023

The work is devoted to approximate methods for solving the system of gas dynamics equations describing the gas motion in ascending swirling flows. The approximate solution of the system of partial differential equations describing the motion of the contact surface - the outer boundary of the ascending swirling flow and gas parameters on it is constructed in the paper. It is assumed that gravitational and Coriolis forces act on the ascending swirling flow, and a stationary gas flow runs over its outer boundary. In the form of the system of partial differential equations, the law of motion of the outer boundary of the ascending swirling flow is written. The approximate solution for the law of motion of the outer boundary and gas parameters on it is constructed in the form of series segments.
Method for determining reliability of registered diagnostic messages of 2ES6 electric locomotives
Authors:   Ural state university of railway transport (USURT), Buynosov A. P. , Khudoyarov D. L. ,   Ural state university of railway transport (USURT), Tyushev I. A. ,   Ural state university of railway transport (USURT)
Published: March 2023

Registered diagnostic messages on the equipment of 2ES6 electric locomotives in the Centers for monitoring the technical condition of locomotives allow us to make prompt decisions when operating electric locomotives. In a huge amount of diagnostic data, it is difficult for technology groups to determine point-to-point reliable information. In order to improve the quality of the operational information transmitted to the dispatch office, it is necessary to assess the level of its reliability. The least squares method is proposed to solve this problem. The initial parameters for the calculation are all recorded diagnostic messages and confidence values calculated experimentally. The result of the calculation is a confidence value equal to the tangent of the slope angle of the linear function when approximating experimental data. The least squares method was used in the study to determine the confidence value. The reliability value of diagnostic data is a certain coefficient of a linear equation, the value of which is almost equal to the reliability value found experimentally during observations for 2018. The proposed method for determining reliability will minimize the risks of erratic cases when promptly informing the involved specialists of service locomotive depots, as well as increase the level in determining the prefailure conditions of the controlled units of the electric locomotive. Currently, the method is being tested at the Center for Monitoring the Technical Condition of Locomotives.
Psychological support by means of art therapy for parents of children with special needs
Authors: Dyachkova Elena S.
Published: March 2023

The issue of psychological support for parents of children with disabilities is quite acute, but the development of this area is slow both in Russia and abroad. Many specialists often ignore the severe psychoemotional state of parents of disabled children. The need of this topic to attract more attention is the social aspect of the study. The research is practice-oriented. The purpose of the work is to describe the experience of participation of one of the parents raising a child with special needs in the work of an art therapy studio (short-term art therapy format). The psychological work is based on the methods of art-therapeutic assistance in overcoming the consequences of traumatic stress by
A.I. Kopytin, work with metaphorical associative maps and a set of materials for working with the internal state of “TeloProjector” (author A.M. Simonenko). All stages of the short-term format of the art therapy studio have been completed. During and after psychological and educational work parents noted positive changes in their mental state. The regular psychological support for this category of citizens, in particular by means of art therapy, is necessary.
The human microbiome project at ten years - some critical comments and reflections on “our third genome”, the human virome
Authors: Brüssow Harald
Published: March 2023

The Human Microbiome Project (HMP) has raised great expectations claiming the far-reaching influence of the microbiome on human health and disease ranging from obesity and malnutrition to effects going well beyond the gut. So far, with the notable exception of fecal microbiota transplantation in Clostridioides difficile infection, practical application of microbiome intervention has only achieved modest clinical effects. It is argued here that we need criteria for the link between microbiome and disease modelled on the links between pathogens and infectious disease in Koch’s postulates. The most important question is whether the microbiome change is a cause of the given disease or a consequence of a pathology leading to disease where the microbiome change is only a parallel event without a causal connection to the disease – in philosophical parlance, an epiphenomenon. Also discussed here is whether human virome research is a necessary complement to the microbiome project with a high potential for practical applications.
Avaliação dos parâmetros físico-químicos de aguardente de abacaxi produ-zida e de cachaças comercializadas no Tocantins
Authors: Bezerra Fabíola Almeida , Vasconcelos Roberta de Brito , Cavallini Grasiele Soares , Luis Gonçalves Dias de Souza Nelson
Published: March 2023

A cachaça e aguardente de cana-de-açúcar são bebidas comercializada no Brasil e obtidas pela destilação simples do mosto fermentado do caldo de cana-de-açúcar, sendo a cachaça típica e exclusiva do Brasil, com graduação alcoólica entre 38 e 48% v/v a 20 °C. Contudo, outras fontes vegetais podem ser utilizadas para produzir aguardente, como as frutas, que devem apresentar alto teor de sacarose. Assim, o presente trabalho teve como objetivo produzir aguardente de abacaxi infusionadas com pedaços de dois tipos de madeira (carvalho e bálsamo) a fim de verificar a sua qualidade, além de analisar as cachaças artesanais vendidas no sul do estado do Tocantins, quanto aos parâmetros físico-químicos. As aguardentes de abacaxi, obtidas por destilação, apresentaram os valores dos parâmetros físico-químicos dentro do valor estabelecido pela legislação, o que indica que o processo de fabricação gerou um produto com composição segura para ser consumidor e que a adição de lascas de madeiras não interferiu negativamente nos parâmetros analisados.  Em relação às amostras comerciais, a cachaça com murici (CM) apresentou o teor alcoólico, concentração de aldeído, acidez volátil e metanol fora do estabelecido pela legislação, pondo em risco a saúde do consumidor. Assim, nota-se a importância da fiscalização das bebidas produzidas sem o selo de inspeção do Ministério da Agricultura, Pecuária e Abastecimento (MAPA), e que é necessário fazer a conscientização da população para o não consumo de bebidas sem inspeção.
Diversidade enzimática de fungos associados a plantas da Caatinga
Authors: Silva Annita Ingrid Alves , Gomes de Siqueira Celia
Published: March 2023

Os fungos filamentosos participam da produção de alimentos, nos produtos para saúde e na reciclagem de compostos da biosfera. Na indústria eles são utilizados na produção de enzimas, vitaminas, polissacarídeos, pigmentos, lipídios e glicolipídios, valiosos em biotecnologia. O Brasil possui grande diversidade biológica de paisagens, entre elas está a Caatinga, bastante explorada quanto ao potencial biotecnológico vegetal, mas com poucos estudos sobre o potencial dos microrganismos associados a esse bioma. Este estudo teve por objetivo avaliar a produção de enzimas de fungos isolados no solo associado a plantas do semi-árido. As amostras de solo foram coletadas na região da Grota do Angico, município de Poço Redondo, Sergipe, associadas a duas plantas características, Croton heliotropiifolius Kunth e Xiquexique gounellei. Foram isolados 39 fungos das amostras de solo e suas atividades proteolítica, amilolítica e pectinolítica foram avaliadas. Os 17 fungos associados à C. heliotropiifolius apresentam predominantemente atividade de proteases, sendo que apenas um deles apresentou atividade de pectinase, nos demais os resultados foram negativos. Por outro lado, um maior número dos 22 fungos isolados do solo associado à X. goiunellei, atividade enzimática e diversidade de enzimas, sendo que a maioria apresentou atividade proteolítica. Foi detectada atividade amilolítica em oito fungos, atividade proteolítica em 12 fungos e atividade pectinolítica em 6 fungos. Evidenciou-se o potencial dos fungos isolados do bioma da Caatinga para produção de enzimas, principalmente proteolíticas. Os fungos isolados no solo associado a plantas da Caatinga apresentam potencial para a produção de enzimas, principalmente proteolíticas.
El anarquismo como necesidad social
Authors: Aisa Pàmpols Manel
Published: March 2023

El derecho a vivir no puede estar sometido a argumentaciones de raíz darwiniana fundamentadas en “la lucha por la existencia”. Kropotkin nos hablaba del apoyo mutuo, o sea, de una existencia más libre en el seno de una sociedad solidaria y respetuosa con nuestro coetáneo y con todo nuestro entorno natural. Esta sociedad libre del mutuo acuerdo es desacreditada por aquellos que poseen el control económico de la sociedad.
Educação, Cultura e Lutas Sociais: Reverberações em Terra de Mandonismo e Patriarcalismo
Authors: Menezes Maria Cristina , Pinheiro Maria de Lourdes , Martins Luz Joel , Araujo de Oliveira André
Published: March 2023

O Dossiê apresentado na Edição 2022 intitulado “Anarquismo Internacional: Educação, Cultura e Lutas Sociais”, sob a organização de Pere Solà Gussinyer, Doris Accioly e Silva e Luciana Eliza dos Santos agrega investigadores, documentalistas e escritores anarquistas das mais diversas paragens. De fato, trata-se de tema de interesse internacional, com propostas que vem ao encontro das lutas sociais, em prol de uma cultura e uma educação que contemplem reivindicações ainda presentes e necessárias aos grupos sociais em luta por melhores condições de vida e justiça social.
Challenges and Prospects of Apple Cultivation in Himachal Pradesh
Authors: Yasmin Benojir , Roy Arindam , Mehedi Hasan Mandal  , Siddique Giyasuddin , Ghosh Subhendu
Published: March 2023

The present endeavour aims to ascertain the current status and recent challenges of apple cultivation in Kinnaur district, Himachal Pradesh and to explore the prospects by framing suitable strategies through quantitative SWOT (Strengths, Weaknesses, Opportunities, Threats) and QSPM (Quantitative Strategic Planning Matrix) analysis. A total of 32 factors encompassing 20 internal [10 Strengths (S) and 10 Weakness (W)] and 12 external [6 Opportunities (O) and 6 Threats (T)] factors have been identified through empiric investigation and interaction with the stakeholders. Internal Factor Evaluation (IFE) and External Factor Evaluation (EFE) matrices have revealed that favourable agro-climatic conditions (S1, 3.60) and prevalence of diseases of the plants (W5, 3.6) are the most prioritised internal strength and weaknesses. At the same time, the establishment of adequate cold storage facilities (O5, 3.6) and recent changes in the prevailing climate (T1, 2.25) comprise the most concerning external opportunities and threats in the area, respectively. The results further reveal that implementing a well-managed gardening system and developing of infrastructural facilities (WT1, 124.7) may become the qualified alternative action plan to cope with the negative determinants. The establishment and expansion of apple orchard-based food processing units and tourism activities (SO2, 95%) may be considered the most suitable positive (SO) strategy to ensure further prosperity of apple production, which has been supported by most of the respondents. Adapting such a strategy will enrich the horticulture economy and promote the sustainable development of apple farming in the district.
A Common Approach to Three Open Problems in Number Theory
Authors: Tyszka Apoloniusz
Published: March 2023

The following system of equations {x_1 \cdot x_1=x_2, x_2 \cdot x_2=x_3, 2^{2^{x_1}}=x_3, x_4 \cdot x_5=x_2, x_6 \cdot x_7=x_2} has exactly one solution in ({\mathbb N}\{0,1})^7, namely (2,4,16,2,2,2,2). Hypothesis 1 states that if a system of equations S \subseteq {x_i \cdot x_j=x_k: i,j,k \in {1,...,7}} \cup {2^{2^{x_j}}=x_k: j,k \in {1,...,7}} has at most five equations and at most finitely many solutions in ({\mathbb N}\{0,1})^7, then each such solution (x_1,...,x_7) satisfies x_1,...,x_7 \leq 16. Hypothesis 1 implies that there are infinitely many composite numbers of the form 2^{2^{n}}+1. Hypotheses 2 and 3 are of similar kind. Hypothesis 2 implies that if the equation x!+1=y^2 has at most finitely many solutions in positive integers x and y, then each such solution (x,y) belongs to the set {(4,5),(5,11),(7,71)}. Hypothesis 3 implies that if the equation x(x+1)=y! has at most finitely many solutions in positive integers x and y, then each such solution (x,y) belongs to the set {(1,2),(2,3)}.
The Exceptional Jordan Algebra, and Its Implications for Our Understanding of Gravitation and the Weak Force
Authors: Singh Tejinder
Published: March 2023

The exceptional Jordan algebra is the algebra of $3 \times 3$ Hermitian matrices with octonionic entries. It is the only one from Jordan’s algebraic formulation of quantum mechanics which is not equivalent to the conventional formulation of quantum theory. It has often been suggested that this exceptional algebra could explain physical phenomena not currently explained by the conventional approach, such as values of the fundamental constants of the standard model of particle physics, and their relation to gravitation. We show that this is indeed the case; and this also unravels the connection between general relativity and the weak force. The exceptional Jordan algebra also predicts a new U(1) gravitational interaction which modifies general relativity, and which provides a theoretical basis for understanding the Modified Newtonian Dynamics (MOND).
The Macroscopic Mechanical Equilibrium Condition Governing and Supporting Equilibrium States: the Physical Origin of the Equation of State
Authors: Liu Gang
Published: March 2023

The Macroscopic Mechanical Equilibrium Condition can be shown to be the physical origin of the Equation of State of any material system, then can describe all thermodynamic quasi-equilibrium processes caused by the change of the external temperature and/or mechanical environment. If it cannot be satisfied, the material may be broken.
Measurements of the Cross Section for The tt¯ Heavy-flavor Production at the LHC+
Authors: D'Hondt Jorgen , Kim Tae Jeong
Published: March 2023

At the LHC, the process of a Higgs boson decaying into bottom or charm quarks produced in association with a pair of top quarks, tt¯H, allows for an empirical exploration of the heavy-flavor quark Yukawa couplings to the Higgs boson. Accordingly, the cross sections for the tt¯ + heavy-flavor production without the appearance of the Higgs boson have been measured at the LHC in various phase spaces using data samples collected in pp collisions at s = 7, 8 and 13 TeV with the ATLAS and CMS experiments. Flavor ratios of cross sections of tt¯ + additional jets processes with different flavors are also measured. In this paper, the measured cross sections and ratios are reviewed and the prospects with more data are presented.
Key Epidemic Parameters of the SIRV-Model Determined from Past COVID-19 Mutant Waves
Authors: Schlickeiser Reinhard , Kröger Martin
Published: March 2023

Monitored infection and vaccination rates during past past Corona waves are used to infer a posteriori two key parameter of the SIRV-epidemic model, namely the real time variation of the (i) ratio of recovery to infection rate and (ii) ratio of vaccination to infection rate. We demonstrate that using the classical SIR model the ratio between recovery and infection rates tends to overestimate the true ratio, that is of relevance in predicting the dynamics of an epidemics in the presence of vaccinations.
Pengaruh Kebijakan Penurunan Jalur Merah terhadap Penerimaan Negara
Authors:   Politeknik Keuangan Negara STAN (PKN STAN), Nurhidayati Nurhidayati , Cahyani Pramudita ,   Direktorat Jenderal Bea dan Cukai Kementerian Keuangan
Published: March 2023

Salah satu bentuk reformasi dan modernisasi kepabeanan adalah penurunan waktu customs clearance, melalui kebijakan penurunan jalur merah. Dengan waktu customs clearance yang makin singkat, maka perputaran arus barang di pelabuhan maupun bandara menjadi makin cepat sehingga mendukung kelancaran arus logistik nasional. Kelancaran arus barang akan meningkatkan perdagangan yang pada akhirnya penerimaan kepabeanan dan pajak dalam rangka impor ikut mengalami kenaikan. Penelitian ini bertujuan untuk melihat pengaruh kebijakan penurunan jalur merah terhadap penerimaan bea masuk. Penelitian menggunakan data 35 periode sebelum dan sesudah kebijakan penurunan jalur merah tersebut diambil. Hasil penelitian menunjukkan bahwa kebijakan penurunan jalur merah berpengaruh negatif terhadap penerimaan bea masuk.
Trade Creation dan Trade Diversion Indonesia dengan AANZFTA pada Komoditas Garam
Authors:   Departemen Ilmu Ekonomi, Fakultas Ekonomi dan Manajemen, Institut Pertanian Bogor, Nugraha Dwi Tjahya , Irawan Tony ,   Departemen Ilmu Ekonomi, Fakultas Ekonomi dan Manajemen, Institut Pertanian Bogor, Hakim Dedi Budiman ,   Departemen Ilmu Ekonomi, Fakultas Ekonomi dan Manajemen, Institut Pertanian Bogor
Published: March 2023

ASEAN-Australia-New Zealand Free Trade Area (AANZFTA) adalah kawasan perdagangan bebas terbentuk pada tahun 2009. Awal pembentukannya adalah adanya penurunan tarif bea masuk komoditas garam. Kebijakan tersebut berdampak terhadap trade creation (TC) dan trade diversion (TD). Oleh karena itu, penelitian ini bertujuan menganalisis terjadinya TC dan TD pada komoditas garam. Pendekatan yang digunakan adalah elastisitas permintaan impor dan elastisitas substitusi untuk estimasi model TC dan TD yang dikembangkan oleh Bank Dunia. Hasil penelitian yang didapat adalah adanya keuntungan berupa TC dan TD yang didominasi oleh Australia (99%) dan anggota lainnya (1%).
Pengaruh Jam Kerja Orang Tua terhadap Kognitif Anak di Indonesia
Authors:   Magister Ekonomi Kependudukan dan Ketenagakerjaan, Fakultas Ekonomi dan Bisnis Universitas Indonesia, Gemellia Pradini Ajeng , Wongkaren Turro S. ,   Lembaga Demografi, Fakultas Ekonomi dan Bisnis Universitas Indonesia
Published: March 2023

Fenomena saat ini menunjukkan peningkatan aktivitas bekerja, baik ayah maupun ibu, demi memenuhi kebutuhan rumah tangga. Perubahan sosial ini dikhawatirkan memberikan ketidakseimbangan waktu pada anak-anak dan menyebabkan perkembangan anak menjadi tidak optimal. Penelitian ini bertujuan untuk melihat pengaruh jam kerja orang tua terhadap skor kognitif anak di Indonesia. Penelitian ini menggunakan data dari Survei IFLS tahun 2007 dan 2014 dengan unit analisis anak-anak berusia 7 hingga 14 tahun menggunakan metode estimasi OLS. Hasil penelitian menunjukkan bahwa jam kerja orang tua memiliki pengaruh negatif terhadap skor kognitif anak-anak.
Akses Pelayanan Kesehatan Keluarga Berstatus Ekonomi Rendah di Era JKN
Authors:   Departemen Administrasi dan Kebijakan Kesehatan, Fakultas Kesehatan Masyarakat Universitas Indonesia & Kelompok Kerja Kebijakan Asuransi Kesehatan, Tim Nasional Percepatan Penanggulangan Kemiskinan (TNP2K), Soewondo Prastuti , Johar Meliyanni ,   Kelompok Kerja Kebijakan Asuransi Kesehatan, Tim Nasional Percepatan Penanggulangan Kemiskinan (TNP2K), Pujisubekti Retno ,   Kelompok Kerja Kebijakan Asuransi Kesehatan, Tim Nasional Percepatan Penanggulangan Kemiskinan (TNP2K)
Published: March 2023

Masyarakat dengan status ekonomi rendah sering kali tidak mampu memenuhi kebutuhan kesehatannya. Sejak Jaminan Kesehatan Nasional (JKN) diluncurkan pada tahun 2014, Pemerintah memperluas subsidi iuran bagi keluarga tidak mampu yang diidentifikasi menurut nilai konsumsi. Masalahnya, kriteria ini akan mengategorikan keluarga tidak mampu sebagai mampu karena nilai konsumsi yang besar dibiayai oleh pihak lain. Sebagai alternatif, kajian ini menggolongkan keluarga berdasarkan besaran penghasilan yang didapatkan dari pekerjaan. Untuk 35 persen keluarga berpenghasilan terendah, probabilitas utilisasi ditemukan meningkat dengan ketersediaan jaminan kesehatan. Penggunaan besaran konsumsi sebagai acuan peringkat ekonomi terlalu kecil menafsir pengaruh kepesertaan jaminan kesehatan pada utilisasi, sampai sebanyak 71 persen pada pelayanan rawat inap.
Perilaku Pemilihan Moda Transportasi Pekerja Komuter: Studi Kasus Jabodetabek
Authors:   Departemen Ilmu Ekonomi, Fakultas Ekonomi dan Bisnis, Universitas Airlangga, Irjayanti Amelia Dertta , Sari Dyah Wulan ,   Departemen Ilmu Ekonomi, Fakultas Ekonomi dan Bisnis, Universitas Airlangga, Rosida Ismatulloh ,   Departemen Ilmu Ekonomi, Fakultas Ekonomi dan Bisnis, Universitas Airlangga
Published: March 2023

Menggunakan data Survei Komuter Jabodetabek yang diterbitkan oleh Badan Pusat Statistik pada tahun 2014, penelitian ini bertujuan untuk mengidentifikasi faktor-faktor yang memengaruhi pekerja komuter untuk memilih moda transportasi untuk bekerja dan efek marginal dari faktor-faktor tersebut. Hasil estimasi dari regresi logistik menunjukkan bahwa pendapatan dan hari kerja tidak secara signifikan memengaruhi pilihan moda transportasi pekerja komuter. Jumlah moda yang digunakan memiliki dampak tertinggi pada probabilitas penggunaan kendaraan pribadi dan sepeda motor dibandingkan angkutan umum. Seiring dengan bertambahnya usia, lama, dan jarak perjalanan, pekerja komuter cenderung tidak menggunakan kendaraan pribadi.
Sustainable Farming: Respons Petani Tanaman Pangan terhadap Kepemilikan Lahan Pertanian
Authors:   Badan Pusat Statistik, Pratiwi Anik , Moeis Jossy Prananta ,   Fakultas Ekonomi dan Bisnis Universitas Indonesia
Published: March 2023

Praktik pertanian berkelanjutan merupakan solusi terbaik untuk mengatasi degradasi lahan pertanian yang makin luas di Indonesia. Namun, penerapan praktik ini di Indonesia masih sangat terbatas. Berbagai studi empiris menunjukkan bahwa lahan pertanian milik sendiri merupakan insentif yang mendorong petani menerapkan praktik pertanian berkelanjutan. Penelitian ini dilakukan untuk menganalisis keterkaitan kepemilikan lahan pertanian dengan penerapan praktik pertanian berkelanjutan. Sumber data utama yang digunakan berasal dari Survei Struktur Ongkos Usaha Tanaman Pangan 2017. Metode OLS dan 2SLS diterapkan untuk mengestimasi dampak kepemilikan lahan pertanian. Hasil regresi menunjukkan bahwa lahan milik sendiri memotivasi petani untuk menerapkan praktik pertanian berkelanjutan.
The Effects of Sociodemographic Factors on Baseline Patient-Reported Outcome Measures in Patients with Foot and Ankle Conditions
Authors: Boakye Lorraine A.T. , Parker Emily B. , Chiodo Christopher P. , Bluman Eric M. , Martin Elizabeth A. , Smith Jeremy T.
Published: March 2023

Background:

Racial and ethnic care disparities persist within orthopaedics in the United States. This study aimed to deepen our understanding of which sociodemographic factors most impact patient-reported outcome measure (PROM) score variation and may explain racial and ethnic disparities in PROM scores.

Methods:

We retrospectively reviewed baseline PROMIS (Patient-Reported Outcomes Measurement Information System) Global-Physical (PGP) and PROMIS Global-Mental (PGM) scores of 23,171 foot and ankle patients who completed the instrument from 2016 to 2021. A series of regression models was used to evaluate scores by race and ethnicity after adjusting in a stepwise fashion for household income, education level, primary language, Charlson Comorbidity Index (CCI), sex, and age. Full models were utilized to compare independent effects of predictors.

Results:

For the PGP and PGM, adjusting for income, education level, and CCI reduced racial disparity by 61% and 54%, respectively, and adjusting for education level, language, and income reduced ethnic disparity by 67% and 65%, respectively. Full models revealed that an education level of high school or less and a severe CCI had the largest negative effects on scores.

Conclusions:

Education level, primary language, income, and CCI explained the majority (but not all) of the racial and ethnic disparities in our cohort. Among the explored factors, education level and CCI were predominant drivers of PROM score variation.

Level of Evidence:

Prognostic Level IV. See Instructions for Authors for a complete description of levels of evidence.
Reflections on Designing and Delivering an Online Distance Learning Programme in the Mathematical Sciences
Authors: Jack Eilidh
Published: March 2023

In 2013, the University of Glasgow set out a Blended and Online Learning Development scheme focussing on fully online distance learning programmes and blended programmes. In 2017 the School of Mathematics and Statistics within the University of Glasgow developed part-time, online distance learning programmes (PG Diploma/PG Certificate/MSc) in Data Analytics. The programmes have used considerable innovation in terms of course content, assessment, course management and delivery, and in student support. In this case study, we will reflect our experiences of developing and delivering online distance learning programmes and provide future recommendations considering the recent expansion of remote learning across higher educational institutes globally.
Validez de la radiografía periapical digital y la tomografía computarizada de haz Cónico en la detección de defectos óseos peri-implantarios: estudio in vitro
Authors: Elera Morales César C. , Castro Ruiz Carmen T.
Published: March 2023

Objetivo: Comparar la precisión diagnóstica de la radiografía digital directa (RDD) y la tomografía computarizada de haz cónico (TCHC) en la detección de defectos óseos periimplantarios. Materiales y métodos: Los implantes se colocaron en 5 costillas bovinas frescas (3 sin defectos óseos periimplantarios, 12 con defectos óseos periimplantarios de 1.4mm) y se tomaron imágenes usando (i) sistema de rayos x portátil (Dexcowin 3000), (ii) sensor intraoral de rayos x (Sensor H1/ Sensor H2), (iii) TCHC de volumen limitado con 3D Accuitomo 80 (Castellini). Las imágenes de cada uno se presentaron aleatoriamente a 10 examinadores. La confianza en el diagnóstico de la presencia o ausencia de una radiotransparencia periimplantaria se registró en una escala de defecto óseo: definitivamente ausente, dudas sobre el defecto si está ausente o presente, defecto definitivamente presente. Se realizó el análisis inter e intraexaminador mediante una prueba de kappa. Resultados: Se ha obtenido una coincidencia de un 83,3% entre la radiografía digital directa y la tomografía computarizada de haz cónico en la pieza A, de un 100% en la pieza B y de un 88% en la pieza C, lo que da un total promedio de coincidencia del 90.43%. Conclusión: La radiografía digital directa brinda un mismo resultado que una tomografía computarizada de haz cónico en la detección de defectos óseos periimplantares en una fase inicial. Las radiografías digitales son un método fiable y válido y funcionan significativamente mejor que la tomografía computarizada de haz cónico para detectar defectos óseos periimplantarios en una fase inicial.