bluuebunny/crossref_metadata_2025 huggingface dataset:
Green Economy and Some Relevancies from Islamic Finance Perspective
Authors: Aam  , Muhammad
Published: February 2023

The green economy is one of the new economic concepts still popular in research, emphasizing the balance between economic and environmental dimensions. The green economy concept is in line with the existing concept of Islamic finance. As a new concept, research related to a green economy is also developing. Therefore, this study aims to provide qualitative information on the development of green economy literature. There are 1183 papers in journal articles, book chapters, and conference papers indexed by the Scopus database from 1961-2021. We employed VOSViewer and Excel software to synthesize and analyze the data. This research is limited to the Scopus database related to the green economy. In addition, we identified the relevancies between the green economy and Islamic finance, and some research has been discussed these issues. Regarding the result obtained, we found that the rules in Islamic finance support the implementation of the green economy concept. Furthermore, we also found sukuk as a potential instrument in Islamic finance that can be utilized to promotes the green economy concept.
Covid-19 and The Role of Islamic Economics & Finance
Authors: As-Salafiyah Aisyah , Maziyyah Mahsyar Nun
Published: February 2023

This study aims to determine the development map of Covid-19 outbreak research that is published by journal in the theme of Islamic economics and finance. The data analyzed were more than 50 publications of indexed research publications. The entire sample journal publications have published in 2020. The export data is then processed and analyzed using the VOSviewer application program to find out the bibliometric map of the development of economic of the role of islamic economics and finance in times of Covid-19 outbreak. The results showed that the number of publications on the development of the role of Islamic economics and finance research experienced a significant increase. Network visualization showed that the map of the development of Covid-19 research was divided into 4 clusters. Cluster 1 consists of 20 topics, cluster 2 consists of 20 topics, cluster 3 consists of 11 topics, and cluster 4 consists of 12 topics. The findings of this study are that there is special attention to the development of the halal industry, especially halal food and Islamic social finance in order to mitigate the impact of the prolonged health and economic crisis.
Mapping Research on Islamic Fintech Using Biblioshiny-R
Authors: As-Salafiyah Aisyah , Aam  , Marlina Lina
Published: February 2023

This bibliometric study investigated the current state of documents on Islamic financial technology published by digital object identifier equipped journals listed in Dimension. The analysis focused on the description of characterictics and trends of the keywords, authors and journals. The data analyzed were 229 publications of research publications in Dimension (https://dimension.ai). The searches used to establish the study dataset were last updated on 30 January 2021. Descriptive statistical methods were used, and a bibliometric analysis was conducted using the R Biblioshiny to find out the bibliometric map. The number of articles discussing the theme of Islamic fintech has been quite large in recent years. There are many journals that publish this theme, among which the most impactful is the SSRN Electronic Journal which has many authors who research regarding this theme with various keywords. The most popular keywords used are ‘Islamic, Fintech, Financial’. This study provides an overview of trends in the most popular keywords, journals and authors in articles on the topic of Islamic fintech, thus providing information for researchers focused on research in the field of Islamic finance. In the end, this theme has the potential to continue to be developed.
Bibliometric Mapping of Islamic Letter of Credit using VOSviewer
Authors: Fatimah Azzahro Siti
Published: February 2023

This study aims to determine research trends regarding previous Islamic letters of credit, assess research collaboration relationships, and identify future research directions. Using 42 articles published between 2013-2020 on Islamic Letter of Credit. Using qualitative and quantitative approaches, namely Bibliometric and Systematic Literature Review (SLR) methods. This research uses Vos Viewers software. It is known that the three sub-themes that dominate research related to Islamic Letter of Credit are: Islamic Banking and Letter of Credit, Bank Regulation, and Business Financing. This study implies that there is still little research on Islamic Letters of Credit. It is hoped that Islamic Letters of Credit literature can adjust or find new methods that are suitable and accurate.
MODEL-MODEL HUBUNGAN MASYARAKAT DI LEMBAGA PENDIDIKAN ISLAM
Authors: Wahyudi Eko
Published: February 2023

This study focused on the development of science and technology can give these demands make college need the model of public relations to develop the college the purpose of research is 1) Press agentry / publicity model is a model where information moves in one direction, from organization to public. This model is the oldest form of public relations and this model has the same meaning as promotion and publicity. Public relations practitioners who practice this model are always looking for opportunities to get their organization's good name to appear in the media.2) Public Information Model. This model is different from press agentry, because the main purpose is to notify the public and not for promotion and publicity, but the communication path remains one way.3) Model Two-way Asymmetric Model. This model views public relations as a work of scientific persuasion. This model applies social science research methods to improve the effectiveness of persuasion of the messages conveyed. Public relations practitioners with this model use surveys, interviews, and focus groups to measure and assess the public so that they can design public relations programs that can gain support from key public.4) Two-way symmetric model. This model describes a public relations orientation in which organizations and the public adapt to each other. This model focuses on the use of social science research methods to gain a sense of mutual understanding and two-way communication between the public and the organization rather than one-way persuasion.Of the four models, which should be developed by Islamic educational institutions is a two way symmetric model. This is because this model holds a reciprocal relationship between Islamic educational institutions and the community.so, the model of public relations model in educational institutions of the college is very important.
WAKAF KOLEKTIF DAN PENGELOLAANNYA DALAM PERSPEKTIF HUKUM ISLAM
Authors: Suharwoto  , Fitri Ahmad Asrof , Aminulloh Ali
Published: February 2023

Management and management of waqf in Indonesia is still a cause for concern. As a result, quite a lot of waqf assets have been neglected in their management, and some waqf assets have even been lost.

The aims of this study were: 1) to find out the description of collective waqf management at the Dharma Kasih Foundation, East Jakarta. 2) to obtain an explanation regarding the Islamic Law review of the collective waqf process carried out by the East Jakarta Dharma Kasih Foundation.

This research is a qualitative research using a qualitative descriptive approach. The type of this research is field research. Data collection techniques were carried out in 3 ways, namely: 1) interviews, 2) observation, 3) documentation.

The results of the study are (1) the management of the collective waqf of the East Jakarta Dharma Kasih Foundation, namely for land acquisition for the expansion of the foundation and the construction of the foundation's prayer room. It was recorded that there were 122 w?qifs for land acquisition for the foundation and 137 w?qifs for the construction of the foundation's prayer room. (2) Collective endowments for expanding the land of the East Jakarta Dharma Kasih Foundation for mosques and building a prayer room in accordance with Islamic law are permitted. Judging from the perspective of fiqh, it has fulfilled the pillars and conditions, namely w?qif (a person who donates property), mauquf bih (goods or property that is donated), mauquf'alaih (the party who is given waqf / designation of waqf), shighat (a statement or pledge of w?qif as a will to donate part of their property). In the perspective of the waqf law, the waqf elements have also been fulfilled, namely waqif, nazhir, waqf assets, waqf pledges, allotment of waqf assets and the waqf period.
Kort om Sigtunafynden av medeltida klädesplomber
Authors: Edberg Rune
Published: February 2023

Medieval Cloth Seals from Sigtuna. A brief account of ten medieval cloth seals from the town of Sigtuna, Sweden. Seven seals are from excavations in 1996 and 1999–2000. Three are older finds. The origins of two can be confirmed as Poperinge and Tournai, both towns in the historical Flandres region well-known for producing and exporting cloth from the 13th to the 16th centuries. The other seals could not be firmly identified but are discussed with regards to imagery and alternative provenances. Stratigraphical dating of the find context, where possible, is from the late 13th to 15th centuries. The seals are testimony of trade and import of high quality textiles. However, judging from these finds only, little can be said about possible quantities.
Den samiske bjørnekulten
Authors: Sommerseth Ingrid
Published: February 2023

The Sámi bear graves - archaeological traces related to burial customs and rituals in natural cavities: This paper aims to present an ongoing research project about the Sámi bear graves in Norway. The paper focuses on bear graves related to burial customs and rituals associated with cavities. It also addresses the fact that, as can be seen from the many Rock carvings, dated from 8000–2000 BCE, the bear was often portrayed as a vital and significant animal to people in prehistoric times. The background to the project is the study of 30 bear burial sites known in Norway. In general, these date from 300 CE to early modern period, 1700s. This makes this burial custom one of the longest surviving burial traditions in Europe spanning almost two millennia.
Åarjelsaemien tsoevtsh – Sydsamiska snölegor
Authors: Norberg Erik , Callanan Martin , Rosvold Jørgen
Published: February 2023

Åarjelsaemien tsoevtsh – South Sámi snow patches: Reindeer (Rangifer Tarandus Tarandus) was the first ungulate to migrate into the Scandinavian peninsula after the great melt at the end of the last Ice Age. The people who followed soon after, were well aware of the reindeers’ behavior, as it was the animal they had hunted and depended upon for several thousands of years. In the Sámi herder culture, a wealth of knowledge about much of the reindeer's behavior, at various times of the year and in different situations is preserved. There is therefore every reason to try and include this knowledge when trying to understand past traditions and practices in connection with, for example hunting and herding reindeer in alpine areas. The results from the project show that there is still a rich and vibrant tradition of Sami use of these areas. The areas of snow and ice during the summer months are still important for both humans and reindeer. Sami knowledge is valuable for understanding how reindeer move in the landscape at different times depending on the weather, wind and insect conditions. This knowledge is equally valuable and useful to both reindeer herders and hunters of wild reindeer.
History, hearths and contested landscapes
Authors: Bergman Ingela
Published: February 2023

According to Swedish law, reindeer grazing is allowed east of the Lapland border (Sw. Lappmarksgränsen) on a seasonal basis during winter. Today, coastal winter pastures are contested landscapes facing the claims of a number of industries other than reindeer herding. Disputes over land use and land rights have led to legal proceedings. In this context of conflicting claims, history plays out as a significant factor decisive to Sámi usufruct. This paper examines the diversity and time depth of Sámi cultural landscapes in coastal areas. The study draws on archaeological remains, historical records, place names and oral tradition among Sámi as well as local villagers in an area covering the Piteå and Älvsbyn municipalities in the south-eastern parts of the county of Norrbotten. Social and economic strategies are analysed as they have played out in the landscape. The analysis shows, that the studied area contributed to Sámi subsistence throughout the last 500 years and beyond, linking back to the indigenous population of prehistoric times.
Av samma penning Helsingborg 3 mark
Authors: Thomasson Joakim
Published: February 2023

“Out of the same tax – Helsingborg 3 mark” – Early Helsingborg and the question of urbanity. Since the 1920s the urbanisation of Helsingborg has been understood as a development in two stages. The first comprised the establishment of a town and a castle on the escarpment (landborgen) during the 11th and 12th centuries, whereas the second encompassed the gradual move of the town to the beach during the 13th to 15th centuries. The article is a critical examination of this hypothesis, but it is also discussed how the urban development in Helsingborg contributes to the wider understanding of medieval urbanity. Instead of an escarpment-town, the evidence suggests five separate settlements located on strategic positions controlling the access to the beach. The earliest was established during the 8th and 9th centuries. During the 11th and 12th centuries a crown estate (later developed into a castle) replaced this settlement, and four aristocratic manors were established at other locations. It is argued that the beach comprised a seasonally granted and taxed market and a landing place, where the royal and aristocrats that maintained the market peace and controlled the fairway on the strait held the settlements on the escarpment.
Jornalismo Científico: desafios, possibilidades e design da informação
Authors: Couto Daniela Martins Barbosa , Silva Ana Luiza de Sousa , Daniel Vitória Martins
Published: February 2023

A investigação volta-se para o jornalismo científico e discute como as matérias são desenvolvidas, tendo como amostra conteúdos publicados em sites de universidades brasileiras e sites de notícias. A reflexão envolveu descrição e análise comparativa e, ainda, propôs soluções para o melhor desenvolvimento das pautas. Também foram apresentadas estratégias para jornalismo científico baseadas no design da informação. O estudo aponta que ainda há muitos desafios na cobertura sobre ciências, mas também, possibilidades capazes de aproximar os temas sobre conhecimento científico do dia a dia das pessoas.
Grafos e seu Polinômio Característico: Uma proposta didática para o Ensino Médio
Authors: Rossini Gustavo Feltrin , Buligon Lidiane , Tonet Luciane Gobbi
Published: February 2023

Neste trabalho, um tema relacionado às redes sociais é usado como uma estratégia didática para conectar a matemática conceitual e teórica ao cotidiano dos alunos do Ensino Médio. A proposta foi elaborada para ser aplicada na forma de uma oficina na 15a Semana Acadêmica Integrada do Centro de Ciências Naturais e Exatas. A partir do problema motivador sobre o conteúdo de Grafos, foram geradas matrizes, calculados os determinantes pelo método de Laplace e por escalonamento e determinado o polinômio característico. Para finalizar, foi aplicado um questionário aos participantes da oficina com o intuito de obter respostas quanto ao trabalho realizado.
Inadimplência fiscal: a percepção dos fiscais de tributos na fiscalização e controle do ISSQN, na prefeitura municipal de Rondonópolis (MT)
Authors: Oliveira Maricler Santos , Silva Julia Cristina de Andrade e , Silva Anderson Santos da
Published: February 2023

Este artigo tem a finalidade de demonstrar a fiscalização e controle da sonegação do Imposto sobre serviço de qualquer natureza (ISSQN) sob a visão dos Fiscais de tributos da Prefeitura Municipal de Rondonópolis – MT. A pesquisa foi efetuada através de um questionário aplicado para entender os procedimentos e dificuldades da fiscalização do imposto. Nesta análise, apresenta-se a partir das comparações das respostas de cada Fiscal Tributário, o ponto de vista sobre diversos aspectos relativos aos procedimentos, as dificuldades e as barreiras enfrentadas ao fiscalizar e controlar o Imposto Sobre Serviços de Qualquer Natureza. Por fim, a pesquisa possibilitou conhecer os possíveis erros e os motivos pelos quais os contribuintes passam ao inadimplemento do imposto e os problemas encontrados na fiscalização do ISS, negação fiscal vem sendo mais exposta com novos sistemas, mas ainda tem alto número de inadimplentes. Conclui-se, que com tecnologia adequada e mão de obra especializada a área fiscal teria maior controle de fiscalização sobre as omissões de pagamento do ISSQN.
Cuidados na relação de clientela entre o contador externo e o MEI na região de ultrapassagem do limite de receita bruta
Authors: Prado Mikaela Ferreira , Barros Misayane da Silva , Acuña Benjamim Cristobal Mardine
Published: February 2023

Pretendeu-se, com este estudo, analisar os cuidados na relação de clientela entre o contador externo e o microempreendedor individual (MEI) na região de ultrapassagem do limite de recita bruta sujeito ao desenquadramento, a fim de se obter resposta sobre a importância em ter um profissional de contabilidade como gestor para o exercício empresarial simplificado, demonstrando os problemas que um empreendedor poderá sofrer sem as instruções adequadas. A partir das referências bibliográficas buscou identificar e analisar esse modelo de empresa, bem como sua abertura, restrições e como está inserido no ambiente econômico brasileiro. O Microempreendedor individual está cada vez aumentando consideravelmente e é uma boa opção para quem quer abrir seu próprio negócio formal sem muita burocracia. Nesse sentido, além de uma boa gestão, existem diversos cuidados que o empresário precisa ter para que esteja dentro das normas preestabelecidas, evitando assim, prejuízos decorrentes do não cumprimento das regras e deveres. A Abordagem desse trabalho foi qualitativa, tendo como procedimento básico a análise de conteúdo e o instrumento de coletas de dados sobre duas empresas distintas com tabelas apresentando seus faturamentos mensais e anuais. Os resultados revelam a densa relação com os principais desafios enfrentado pelo MEI em relação a ultrapassem anual do limite teto.
O processo de esportivização dos e-sports e a importância do profisional de educação física no condicionamento físico de cyber atletas
Authors: Morello Murilo Cavalcante , Morello Marcelo , Martinelli Mikael Mansur
Published: February 2023

A indústria dos jogos eletrônicos começou um processo de esportivização, dando início ao chamado esporte eletrônico, ou e-sport. E-Sports estão expostos a estresse e tensões fisiológicas durante as competições, por isso pesquisas estão sendo feitas com o intuito de promover uma melhor visão do esporte e assim apresentar participação do profissional de educação física no preparo do condicionamento físico desses atletas. Este artigo busca refletir sobre a importância do profissional de Educação Física no acompanhamento do atleta de jogos online para atuar nessa emergente realidade, bem como suas possibilidades de atuação.
STUDY OF THE DEFORMATIONS OF CORRUGATED CARDBOARD CONTAINERS EXPOSED TO INTERNAL PRESSURE
Authors: CORTES MARTINEZ FERNANDO , GOTI ELORDI AITOR , GALLO LAYA JAVIER , ALBERDI CELAYA ELISABETE , OYARBIDE ZUBILLAGA AITOR
Published: February 2023

The objective of this work is to characterise the mechanical behaviour of corrugated cardboard containers by means of a simple model that allows to approximate the load capacity and the deformation of the containers based on their characteristic parameters. This is very interesting during a container design stage, in which the product does not yet exist and therefore the modification costs are low. For this reason, this article first presents an experimental study of the deformations of corrugated cardboard containers subjected to the internal pressure exerted by the load. Next, a model based on the flexural behaviour of plates with parameters that are identified by fitting the model to the experimental data is proposed. From the fitting analysis it is concluded that the model allows to approximate the deformations of the corrugated cardboard containers in a simple way and with enough accuracy for practical engineering applications.
PRICING AND SERVICE STRATEGIES OF DUAL-CHANNEL SUPPLY CHAIN UNDER INFORMATION SHARING
Authors: Xu Mingxing , Yu Ruoshan , Su Huishui
Published: February 2023

With the rapid popularization of online shopping, more and more enterprises adopt dual-channel supply chain structures, and information sharing plays an important role in the implementation of dual-channel supply chain management. Most of the existing literature has investigated one-way information sharing from the retailer to the manufacturer, whereas few studies on two-way information sharing between the manufacturer and retailer in a dual-channel supply chain have been explored. A dual-channel supply chain consisting of a manufacturer and a retailer, both of whom have private information about consumer preference and service cost was considered in this study. Game-theoretic models were developed to investigate the decision-making problem of dual-channel members in two information-sharing scenarios including non-information sharing and information sharing respectively. Furthermore, the impact of the manufacturer's information forecast capability on the sale price, service level, and profits were analyzed through numerical example. Results show that information sharing can increase the wholesale price, sale price, and online service level; furthermore, information sharing not always be beneficial for dual-channel supply chain members. When the information forecast capability of the manufacturer is relatively weak, information sharing can increase supply chain members' profits. On the contrary, information sharing may not always increase his profits. Additionally, the retailer cannot benefit from information sharing in any cases, which accounts for his weak willingness to share information with the manufacturer. This study provides a significant reference for decision-making.
Keywords: dual-channel supply chain; information sharing; price decisions; service decisions
FROM BIM MODELLING TO EXTENDED REALITY APPLIED TO THE BUILDING SECTOR
Authors: GIL LOPEZ TOMAS
Published: February 2023

Today, the traditional method of designing buildings by means of 2D or 3D drawings, using graphic design programs, is insufficient. The increasing complexity of the construction process requires an effective exchange of information between all the agents involved in the process.
Possibility of using a portable multi-gas detector Dräger X-am 8000 for monitoring explosive gases in the area of historical oil and gas mines in the Podkarpackie region.
Authors: Maruta Michał
Published: February 2023

The oldest oil basin in the world is located in the Polish Carpathians. Former mines, often abandoned, have become technical monuments. The growing popularity of industrial tourism in the world and in Poland attracts more and more tourists who want to "find oil" on their own. In most cases, these are abandoned crude oil and natural gas mines, being in such places is associated with the risk of poisoning, ignition or explosion of escaping gases from unprotected crude oil mines or borehole outlets. The article also points to the heritage of oil mining in the Polish Carpathians and related cultural routes. The author focuses on the issue related to the occurrence of the hazard zone of hydrogen sulphide poisoning or methane explosion in the sites of old oil mines. It presents the possibility of using the mobile multi-gas detector Dräger X-am 8000 as a personal device for monitoring the concentration of gases and vapours considered toxic and / or explosive, such as Methane or Hydrogen Sulfide. It also proposes the use of the Dräger X-am 8000 multi-gas detector, which in combination with the Dräger X-site Live real-time area monitoring module can serve as a mobile system for short- or long-term monitoring of the above-mentioned zones.
New Non-Intrusive Condition Monitoring System Designed to Improve Reliability of the RCD
Authors: Machocki Krzysztof , Marhoon Zahrah , Amjad Shaarawi , Sehsah Ossama , Dixon Tom , Mohammad Jamal Ud-Din
Published: February 2023

Managed pressure drilling (MPD) is a technology that allows for precise wellbore pressure control, especially in formations of uncertain geomechanics. The rotating control device (RCD) is a crucial part of the MPD equipment but is prone to failure. Therefore, a new condition monitoring system was developed to improve the reliability of RCDs and eliminate their catastrophic failures during MPD jobs. Non-intrusive sensors were selected during the design of this condition monitoring system. Sensors are measuring: vibrations, acoustic emissions, rotation, pipe movement, temperatures, and contamination level in the coolant fluid. The system can display the measurements in real-time to the operator, giving early warnings to prevent the RCD's catastrophic failures during the job. Additionally, the data is recorded to allow further processing and analysis using ML and AI techniques.
Determination of mechanical parameters of salts in the cyclic load processes corresponding to the operation the storage cavern for hydrogen
Authors: Polański Krzysztof
Published: February 2023

The paper describes the results of laboratory tests of strength the salt samples made as part of the HESTOR project in order to determine the mechanical parameters of salt. The tests were carried out using the Autolab2000 apparatus which allows to simulate any load cycles. The tests were made by simulating the operation of the hydrogen storage cavern. In order to observe differences in salt behavior depending on the sample medium being stored during the test, gases were supplied: nitrogen, as an analog of natural gas, and helium as a hydrogen analogue.
Thermoelectric Properties of Pyrite in the Supra-Ore Level of Gold Mineralization (Ukrainian Carpathians)
Authors: Kostyuk Oleksandr
Published: February 2023

The thermoelectric properties of different-aged generations of pyrite from Lostun (Chyvchyny ore region) Tukalo and Kamin-Kliovka (Лостунь, Тукало, Камінь-Кльовка) (Rakhiv ore region) ore manifestations are investigated. The research included traditional geological observations with the collection of samples of various hosting ores, together with mineralogical analysis measuring their reflective power and the thermo electro-motive force of pyrite. Two pyrite generations (pyrite I and pyrite II) have been revealed by the investigation’s results. The crystals belonging to the generations differ morphologically quite vividly (pyrite I has the form of a pentagonal dodecahedron, while pyrite II takes the form of a cube) and have different thermoelectrical properties. Pyrite I testifies to the fact that in the direction from the central parts of crystals with a pentagonal-dodecahedron tendency to its surface, the thermoelectrical properties essentially change. In particular, the central parts of pyrite I crystals have electron conductivity while its faces are mainly hole ones. Such essential changes of the pyrite thermoelectrical properties from the central parts of the crystals to their peripheral ones are probably mostly caused by quantitative changes of element admixtures in the crystalline lattice. However, the pyrite II thermoelectrical properties investigation results testify that this mineral has only hole-conductivity. Thus, in terms of general thermo-e.m.f. (electromagnetic field) as well as selections range, the thermoelectric properties of the pyrite from the Lostun and Tukalo ore manifestations and the Sauliak (Сауляк) auriferous deposit are similar. The comparative character of the pyrite thermoelectric properties from the investigated ore manifestations, the Sauliak deposit and other auriferous deposits testify to the supra-ore level of the gold mineralization in Tukalo and Lostun objects and make it possible to assume that erosion shear of the gold mineralization in Tukalo ore manifestation is similar to the Sauliak deposit erosive shear and is deeper in comparison to the Lostun ore manifestation.
Evaluation of the effectiveness of anomalous systems in gas subsidiaries (Case study of Alborz Gas Company)
Authors: Ghasemi Fatemeh Sadat , Talkhooncheh Alireza Kazemian , Miri Lavasani Mohammad Reza
Published: February 2023

An anomaly is an unsafe condition or action that has the potential to cause an accident. These conditions or unsafe practices in gas companies play a very important role in the occurrence of gas leaks and fires. Any unsafe acts can lead to unpleasant incidents for citizens and their homes and property. The aim of this study is to increase the effectiveness of anomalous systems in gas subsidiaries of Alborz province. To conduct this study, Tripod Beta technique to draw a diagram of analysis of gas accidents in homes in Alborz province and hierarchical analysis method was used to assess the risk of injuries, casualties and unintentional house fires. In the first stage, information on gas leaks and fires was collected by reviewing the documents related to the winter events of 2020. Then the sum of the mentioned conditions was studied as a hypothetical model. In the second step, the mentioned model was analyzed using Tripod Beta method and the causes of the accident were determined by the capability of the study method. The obstacles studied were technical safety regulations and the creation of a safe environment. The immediate reason attached to the technical safety regulations was the lack of proper understanding of the valve opening and closing sign. Another immediate reason for creating a safe environment was the lack of safe equipment. The precondition for not understanding the open and closed sign of the valve, lack of sufficient knowledge and the precondition for not using safe equipment, buying unsafe equipment and the hidden reason for lack of sufficient knowledge, lack of training and the hidden reason for buying unsafe equipment was poor economic situation. The results of this study indicated that fire-related conditions are of the utmost importance in assessing the risk of unintentional house fires. Failure to pay attention to safety points while using gas-related equipment, poor condition of the building and more male residents have the most anomalies in causing gas company accidents.
Medium Correction to Gravitational Form Factors
Authors: Lin Shu  , Tian Jia-yuan  ,   School of Physics and Astronomy, Sun Yat-Sen University, Zhuhai 519082, China
Published: February 2023

We generalize the gravitational form factor for chiral fermion in vacuum, which reproduces the well-known spinvorticity coupling. We also calculate radiative correction to the gravitational form factors in quantum electrodynamics plasma. We find two structures in the form factors contributing to the scattering amplitude of fermion in vorticity field, one is from the fermon self-energy correction, pointing to suppression of spin-vorticity coupling in medium; the other strucutre comes from graviton-fermion vertex correction, which does not adopt potential interpretation, but corresponds to transition matrix element between initial and final states. Both structures contribute to chiral vortical effect. The net effect is that radiative correction enhances the chiral vortical effect. Our results claify the relation and difference between spin-vorticity coupling and chiral vortical effect from the perspective of form factors. We also discuss the application of the results in QCD plasma, indicating radiative correction might have an appreciable effect in spin polarization effect in heavy ion collisions.
Breathing oscillations excitation mechanism and influence factors in Hall thrusters
Authors: Yang San-Xiang , Guo Ning , Jia Yan-Hui , Geng Hai , Gao Jun , Liu Jia-Tao , Liu Shi-Yong , Yang Sheng-Lin ,   Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730000, China
Published: February 2023

Breathing oscillations as one of the low frequency, large amplitude discharge instabilities have serious influence on the performance and lifetime of Hall thrusters. In order to acquire a better understanding of the breathing-oscillation in the Hall thrusters and provide the effective suppression methods for breathing-oscillation, the excitation mechanism and influence factors of the breathing oscillations are investigated by utilizing the two-zone predator-prey (P-P) model in this paper. The two-zone P-P model divides the discharge channel of Hall thruster into two parts according to the working principle of Hall thruster: one is the near anode zone and the other e is the ionization zone. The model includes the ion radial diffusion effect and electrons-wall interaction effect. The four-order Range-Kuttle method is utilized to solve the nonlinear two-zone P-P model equation. The research results show that the interaction of electrons with the wall has the inhibition effect on the breathing oscillations caused by the energy consumption due to the colliding with discharge channel wall. However, ion radial diffusion effect which is near anode has an excitation effect on the breathing oscillation. The ion and neutral atom dynamic behaviors obviously show the P-P feature in the phase space. In other words, there is a phase difference between the change of ion density and the change of neutral particle density. Relying on the intensity of the ions radial diffusion effect, the mode oscillation frequency and oscillation amplitude of discharge current present non monotonic change trend. More specifically, with the increase of intensity of ion radial diffusion effect, the oscillation frequency first increases and then decreases. However, the discharge peak current first decreases and then increases. Furthermore, the breathing oscillations excitation is irrelevant to the length of ionization zone, and the oscillation frequency increases (oscillation period) with length of ionization zone increasing (decreasing), provided that the length of discharge channel is constant. The research results of this paper will provide support to make clear the excitation mechanism and propose the new method of suppressing the breathing oscillations in the hall thrusters.
Cavity-enhanced spectra of hot Rydberg atoms
Authors: Wang Qin-Xia , Wang Zhi-Hui , Liu Yan-Xin , Guan Shi-Jun , He Jun , Zhang Peng-Fei , Li Gang , Zhang Tian-Cai ,   State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China,   Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
Published: February 2023

High-precision spectra of Rydberg atoms are of significance in studying the interaction between Rydberg atoms, the energy level structure of Rydberg atom, and the precision measurement of the electromagnetic field. To enhance the measurement sensitivity, it is necessary to achieve the high contrast, high signal-to-noise ratio, and narrow linewidth of the spectra of the Rydberg atoms. In this work, the cavity-enhanced spectra of Rydberg atoms are studied theoretically and experimentally. Comparing with the free-space spectra of Rydberg atoms, the contrast and the signal-to-noise ratio are enhanced by 11.5 times, with the linewidth unchanged. Under the condition of two-photon resonance, both the electro-magnetically induced transparency and the double-resonance optical-pumping process can suppress the absorption of the probe laser, thereby improving the impedance matching of the cavity. As the intracavity probe laser intensity turns stronger, the contrast and signal-to-noise ratio can be improved further, and the improvement depends on the transmission of the probe laser through the atom vapor. It is expected that the contrast and signal-to-noise ratio can be improved by a factor of 23 through optimizing the temperature of the cesium atom vapor. This work provides an important reference for improving the contrast of the spectra of Rydberg atoms and the sensitivity of Rydberg-based precision measurements.
Playing Oppression
Authors: Flanagan Mary , Jakobsson Mikael
Published: February 2023

A striking analysis of popular board games' roots in imperialist reasoning—and why the future of play depends on reckoning with it.

Board games conjure up images of innocuously enriching entertainment: family game nights, childhood pastimes, cooperative board games centered around resource management and strategic play. Yet in Playing Oppression, Mary Flanagan and Mikael Jakobsson apply the incisive frameworks of postcolonial theory to a broad historical survey of board games to show how these seemingly benign entertainments reinforce the logic of imperialism.

Through this lens, the commercialized version of Snakes and Ladders takes shape as the British Empire's distortion of Gyan Chaupar (an Indian game of spiritual knowledge), and early twentieth-century “trading games” that fêted French colonialism are exposed for how they conveniently sanitized its brutality while also relying on crudely racist imagery. These games' most explicitly abhorrent features may no longer be visible, but their legacy still lingers in the contemporary Eurogame tendency to exalt (and incentivize) cycles of exploration, expansion, exploitation, and extermination.

An essential addition to any player's bookshelf, Playing Oppression deftly analyzes this insidious violence and proposes a path forward with board games that challenge colonialist thinking and embrace a much broader cultural imagination.
Structural features stabilized by divalent cation coordination within hepatitis E virus ORF1 are critical for viral replication
Authors: LeDesma Robert , Heller Brigitte , Biswas Abhishek , Maya Stephanie , Gili Stefania , Higgins John , Ploss Alexander
Published: February 2023

Hepatitis E virus (HEV) is an RNA virus responsible for over 20 million infections annually. HEV’s open reading frame (ORF)1 polyprotein is essential for genome replication, though it is unknown how the different subdomains function within a structural context. Our data show that ORF1 operates as a multifunctional protein, which is not subject to proteolytic processing. Supporting this model, scanning mutagenesis performed on the putative papain-like cysteine protease (pPCP) domain revealed six cysteines essential for viral replication. Our data are consistent with their role in divalent metal ion coordination, which governs local and interdomain interactions that are critical for the overall structure of ORF1; furthermore, the ‘pPCP’ domain can only rescue viral genome replication in trans when expressed in the context of the full-length ORF1 protein but not as an individual subdomain. Taken together, our work provides a comprehensive model of the structure and function of HEV ORF1.
Chloride ions evoke taste sensations by binding to the extracellular ligand-binding domain of sweet/umami taste receptors
Authors: Atsumi Nanako , Yasumatsu Keiko , Takashina Yuriko , Ito Chiaki , Yasui Norihisa , Margolskee Robert F , Yamashita Atsuko
Published: February 2023

Salt taste sensation is multifaceted: NaCl at low or high concentrations is preferably or aversively perceived through distinct pathways. Cl− is thought to participate in taste sensation through an unknown mechanism. Here, we describe Cl− ion binding and the response of taste receptor type 1 (T1r), a receptor family composing sweet/umami receptors. The T1r2a/T1r3 heterodimer from the medaka fish, currently the sole T1r amenable to structural analyses, exhibited a specific Cl− binding in the vicinity of the amino-acid-binding site in the ligand-binding domain (LBD) of T1r3, which is likely conserved across species, including human T1r3. The Cl− binding induced a conformational change in T1r2a/T1r3LBD at sub- to low-mM concentrations, similar to canonical taste substances. Furthermore, oral Cl− application to mice increased impulse frequencies of taste nerves connected to T1r-expressing taste cells and promoted their behavioral preferences attenuated by a T1r-specific blocker or T1r3 knock-out. These results suggest that the Cl− evokes taste sensations by binding to T1r, thereby serving as another preferred salt taste pathway at a low concentration.
CircRNA expression profiles and functional analysis in a mouse model of chronic intermittent hypoxia-induced renal injury: new insight into pathogenesis
Authors: Chen Qingshi , Hong Zhenzhen , Chen Zhiyu , Chen Yanfeng , Liu Dexin
Published: February 2023

Increasing evidence has demonstrated that circular RNAs (circRNAs) play crucial roles in the pathogenesis of multiple diseases. However, the functions of circRNAs in renal injury induced by obstructive sleep apnea (OSA) are poorly understood. The aim of this current study is to identify the global changes of circRNAs expression in OSA-induced renal damage. The mouse model of OSA treated by chronic intermittent hypoxia (CIH) was established. We assessed the expression profiles of circRNAs in CIH caused renal injury by microarray analysis. Bioinformatic analyses were further performed by us to assess those differentially expressed circRNAs. Quantitative realtime PCR (qRT-PCR) were then conducted to assure the data of microarray. Finally, a circRNA-miRNA -mRNA competing endogenous RNA (ceRNA) regulatory network was constructed. We found 11 upregulated and 13 downregulated circRNAs in CIH-induced renal injury. The qRT-PCR validated that the six selected circRNAs were identical to the results of microarray. Both Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis were further employed to annotate the potential functions of dysregulated circRNAs. Finally, we established a ceRNA network to predict the target genes of circRNAs. In general, our results first illustrate that circRNAs are aberrantly expressed in OSA-induced renal injury, which might aid in offering novel genetic insights into this disease and potential therapeutic targets for OSA-associated chronic kidney disease.
Addressing the challenges of symbiont-mediated RNAi in aphids
Authors: Elston Katherine M. , Maeda Gerald P. , Perreau Julie , Barrick Jeffrey E.
Published: February 2023

Because aphids are global agricultural pests and models for bacterial endosymbiosis, there is a need for reliable methods to study and control their gene function. However, current methods available for aphid gene knockout and knockdown of gene expression are often unreliable and time consuming. Techniques like CRISPR-Cas genome editing can take several months to achieve a single gene knockout because they rely on aphids going through a cycle of sexual reproduction, and aphids often lack strong, consistent levels of knockdown when fed or injected with molecules that induce an RNA interference (RNAi) response. In the hopes of addressing these challenges, we attempted to adapt a new method called symbiont-mediated RNAi (smRNAi) for use in aphids. smRNAi involves engineering a bacterial symbiont of the insect to continuously supply double-stranded RNA (dsRNA) inside the insect body. This approach has been successful in thrips, kissing bugs, and honeybees. We engineered the laboratoryEscherichia colistrain HT115 and the native aphid symbiontSerratia symbioticaCWBI-2.3Tto produce dsRNA inside the gut of the pea aphid (Acyrthosiphon pisum) targeting salivary effector protein (C002) or ecdysone receptor genes. For C002 assays, we also tested co-knockdown with an aphid nuclease (Nuc1) to reduce RNA degradation. However, we found that smRNAi was not a reliable method for aphid gene knockdown under our conditions. We were unable to consistently achieve the expected phenotypic changes with either target. However, we did see indications that elements of the RNAi pathway were modestly upregulated, and expression of some targeted genes appeared to be somewhat reduced in some trials. We conclude with a discussion of the possible avenues through which smRNAi, and aphid RNAi in general, could be improved in the future.
O processo de (Des)reterritorialização de “flanelinhas” no município de Maringá-PR
Authors: Monteiro Felipe Violi , Guedes Alexandre Marcelo Coutinho , Borges William Antonio
Published: February 2023

A partir de um novo olhar frente ao trabalho informal no Brasil, objetivamos com este artigo compreender os modos pelos quais guardadores autônomos de veículos, denominados “flanelinhas”, territorializam seu espaço de atuação em sentido físico e simbólico. Tal territorialização é permeada por uma série de mecanismos institucionais nas esferas da União e Município que produzem um trabalho que se tece entre a informalidade e a ilegalidade, ocasião que se edifica um problema público. Para tanto, nos apoiamos na metodologia do construcionismo social para coproduzir narrativas que captem o modo como essa atividade dinâmica é praticada no cotidiano dos guardadores de Maringá-PR. Pudemos concluir que estes trabalhadores se apoiam em instituições legitimadas (supermercados, lojas físicas) que cercam seu espaço de trabalho para territorializar sua prática enquanto parte do comércio local, visto que, apesar de constituírem uma profissão regulamentada por lei, não há no município formalização de registro da atividade.
Direito à cidade e mobilidade urbana: a bicicleta na cidade do automóvel
Authors: Monteiro Felipe Violi , Dos Santos Letícia , Paulo Carla Fernanda de Oliveira
Published: February 2023

O presente trabalho tem como objetivo compreender se há uma política pública cicloviária em Maringá e se esta promove o direito à cidade e à mobilidade daqueles que se locomovem de bicicleta pela cidade. Para tanto, fez-se necessário compreender os  processos  decisórios  de atores políticos nas arenas de discussão sobre o tema da  mobilidade  urbana  maringaense  bem como de que maneira se implementaram  os  projetos  cicloviários  existentes  na  cidade.  A pesquisa, de cunho qualitativo, construiu-se a partir de análise de documentos públicos e noticiários, bem como de uma revisão da literatura da área em conjunto com produções acadêmicas de áreas distintas. Pôde-se concluir que a cidade não possui uma política pública cicloviária, uma vez que seus projetos foram constituídos de maneira esparsa em distintas gestões, atendendo à interesses específicos e para a obtenção de recursos da esfera federal. Conclui-se também que a ausência de uma política  de  mobilidade  urbana  e,  mais especificamente , cicloviária, inibe o acesso  à cidade  e  à  mobilidade  por  parte  dos ciclistas  que se locomovem no meio  urbano  diariamente,  uma  vez  que  Maringá  se  estabelece  como  a cidade com a maior taxa de  acidentes  envolvendo  vítimas  dos  dez  maiores  municípios  do Paraná.