bluuebunny/crossref_metadata_2025 huggingface dataset:
Direct Evidence of Ice Crystallization Inhibition by Dielectric Relaxation of Hydrated Ions
Authors: Song Xiaoyuan , Zhong Lisheng , Gao Jinghui
Published: November 2021

In this paper, the inhibition effect of an alternative current (AC) electric field on ice crystallization in 0.9 wt % NaCl aqueous solution was confirmed thermodynamically with characterization. An innovative experimental and analytical method, combining differential scanning calorimeter (DSC) measurement with an externally applied electric field was created by implanting microelectrodes in a sample crucible. It was found that the ice crystallization, including pure ice and salty ice, was obviously inhibited after field cooling with an external AC electric field in a frequency range of 100 k–10 MHz, and the crystallization ratio was related to frequency. Compared with non-field cooling, the crystallization ratio of ice crystals was reduced to less than 20% when E = 57.8 kV/m and f = 1 MHz. The dielectric spectrum results show that this inhibition effect of an alternating electric field on ice crystal growth is closely related to the dielectric relaxation process of hydrated ions.
A Study on Minimizing Welding Deformation of Joints for the Sealing of Emission After-Treatment Structure
Authors: Kang Sungwook , Yun Wangho , Kim Hwanjin , Kim Jaewoong , Ji Changwook , Lee Kwangjin , Kim Jaehwang , Jang Hong-Lae , Chun Kwangsan
Published: November 2021

As the environmental pollution issue has recently become significant, environmental regulations in Europe and the United States are being strengthened. Thus, there is a demand for the quality improvement of emission after-treatment systems to satisfy the strengthened environmental regulations. Reducing the amount of welding heat distortion by optimization of the welding order of each part could be a solution for quality improvement since the emission after-treatment system consists of many parts and each assembly is produced by welding individual ones. In this research, a method to derive a welding sequence that effectively minimizes welding deformation was proposed. A two-stage simulation was performed to obtain the optimal welding sequence. In the first stage, the welding sequence was derived by analyzing the number of welding groups in each assembly of a structure. The derived welding sequence was verified by performing a thermal elasto-plastic analysis and comparing it with the experimental results.
Preparation of Cast Metallic Foams with Irregular and Regular Inner Structure
Authors: Kroupová Ivana , Gawronová Martina , Lichý Petr , Merta Václav , Radkovský Filip , Janovská Kamila , Nguyenová Isabel , Beňo Jaroslav , Obzina Tomáš , Vasková Iveta , Lána Ivo , Rygel Jiří
Published: November 2021

The aim of this paper is to summarize the possibilities of foundry methods for the production of metallic foams. At present, there are a number of production technologies for this interesting material, to which increasing attention has been paid in recent years. What is unique about metallic foams is the combination of their physical and mechanical properties. As part of our research, we designed and verified four main methods of metallic foam production by the foundry technology, whose products are metallic foam castings with regular and irregular arrangements of internal cavities. All these methods use materials and processes commonly used in conventional foundry technologies. The main idea of the research is to highlight such technologies for the production of metallic foams that could be provided by manufacturing companies without the need to introduce changes in production. Moreover, foundry methods for the production of metallic foams have the unique advantage of being able to produce even complex shaped parts and can thus be competitive compared to today’s established technologies, the output of which is usually only a semi-finished product for further processing. This fact was the main motivation for the research.
Reconstruction of Lamb Wave Dispersion Curves in Different Objects Using Signals Measured at Two Different Distances
Authors: Draudvilienė Lina , Tumšys Olgirdas , Raišutis Renaldas
Published: November 2021

The possibilities of an effective method of two adjacent signals are investigated for the evaluation of Lamb waves phase velocity dispersion in objects of different types, namely polyvinyl chloride (PVC) film and wind turbine blade (WTB). A new algorithm based on peaks of spectrum magnitude is presented and used for the comparison of the results. To use the presented method, the wavelength-dependent parameter is proposed to determine the optimal distance range, which is necessary in selecting two signals for analysis. It is determined that, in the range of 0.17–0.5 wavelength where δcph is not higher than 5%, it is appropriate to use in the case of an A0 mode in PVC film sample. The smallest error of 1.2%, in the distance greater than 1.5 wavelengths, is obtained in the case of the S0 mode. Using the method of two signals analysis for PVC sample, the phase velocity dispersion curve of the A0 mode is reconstructed using selected distances x1 = 70 mm and x2 = 70.5 mm between two spatial positions of a receiving transducer with a mean relative error δcph=2.8%, and for S0 mode, x1 = 61 mm and x2 = 79.7 mm with δcph=0.99%. In the case of the WTB sample, the range of 0.1–0.39 wavelength, where δcph is not higher than 3%, is determined as the optimal distance range between two adjacent signals. The phase velocity dispersion curve of the A0 mode is reconstructed in two frequency ranges: first, using selected distances x1 = 225 mm and x2 = 231 mm with mean relative error δcph=0.3%; and second, x1 = 225 mm and x2 = 237 mm with δcph=1.3%.
The Valorisation of Olive Mill Wastewater from Slovenian Istria by Fe3O4 Particles to Recover Polyphenolic Compounds for the Chemical Specialties Sector
Authors: Peeters Kelly , Miklavčič Višnjevec Ana , Esakkimuthu Esakkiammal Sudha , Schwarzkopf Matthew , Tavzes Črtomir
Published: November 2021

Olive oil production using three-phase decanter systems creates olive oil and two by-products: olive mill wastewater (OMWW) and pomace. These by-products contain the highest share of polyphenolic compounds that are known to be associated with beneficial effects on human health. Therefore, they are an attractive source of phenolic compounds for further industrial use in the cosmetic, pharmaceutical and food industries. The use of these phenolics is limited due to difficulties in recovery, high reactivity, complexity of the OMWW matrix and different physiochemical properties of phenolic compounds. This research, focused on OMWW, was performed in two phases. First, different polyphenol extraction methods were compared to obtain the method that yields the highest polyphenol concentration. Twenty-five phenolic compounds and their isomers were determined. Acidifying OMWW, followed by five minutes of ultrasonication, resulted in the highest measured polyphenol content of 27 mg/L. Second, the collection of polyphenolic compounds from OMWW via adsorption on unmodified iron (II, III) oxide particles was investigated. Although low yields were obtained for removed polyphenolic compounds in one removal cycle, the process has a high capability to be repeated.
Ultrasensitive Detection of COVID-19 Causative Virus (SARS-CoV-2) Spike Protein Using Laser Induced Graphene Field-Effect Transistor
Authors: Cui Tian-Rui , Qiao Yan-Cong , Gao Jian-Wei , Wang Chun-Hua , Zhang Yu , Han Lin , Yang Yi , Ren Tian-Ling
Published: November 2021

COVID-19 is a highly contagious human infectious disease caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and the war with the virus is still underway. Since no specific drugs have been made available yet and there is an imbalance between supply and demand for vaccines, early diagnosis and isolation are essential to control the outbreak. Current nucleic acid testing methods require high sample quality and laboratory conditions, which cannot meet flexible applications. Here, we report a laser-induced graphene field-effect transistor (LIG-FET) for detecting SARS-CoV-2. The FET was manufactured by different reduction degree LIG, with an oyster reef-like porous graphene channel to enrich the binding point between the virus protein and sensing area. After immobilizing specific antibodies in the channel, the FET can detect the SARS-CoV-2 spike protein in 15 min at a concentration of 1 pg/mL in phosphate-buffered saline (PBS) and 1 ng/mL in human serum. In addition, the sensor shows great specificity to the spike protein of SARS-CoV-2. Our sensors can realize fast production for COVID-19 rapid testing, as each LIG-FET can be fabricated by a laser platform in seconds. It is the first time that LIG has realized a virus sensing FET without any sample pretreatment or labeling, which paves the way for low-cost and rapid detection of COVID-19.
Mapping the Surface Heat of Luminescent Solar Concentrators
Authors: Sun Yujian , Zhang Yongcao , Li Yilin
Published: November 2021

Luminescent solar concentrators (LSCs) have been widely studied for their potential application as building-integrated photovoltaics (BIPV). While numerous efforts have been made to improve the performance, the photothermal (PT) properties of LSCs are rarely investigated. In this report, we studied the PT properties of an LSC with a power conversion efficiency (PCE) of 3.27% and a concentration ratio of 1.42. The results showed that the total PT power of the LSC was 13.2 W, and the heat was concentrated on the edge of the luminescent waveguide with a high heat power density of over 200 W m−2.
Primary Phosphines and Phosphine Oxides with a Stereogenic Carbon Center Adjacent to the Phosphorus Atom: Synthesis and Anti-Markovnikov Radical Addition to Alkenes
Authors: Murai Toshiaki , Wada Ryota , Iwata Kouji , Maekawa Yuuki , Kuwabara Kazuma , Minoura Mao
Published: November 2021

Organophosphorus compounds with stereogenic phosphorus and carbon atoms have received increasing attention. In this regards, primary phosphines with a stereogenic carbon atom adjacent to the phosphorus atom were synthesized by the reduction in phosphonates and phosphonoselenoates with a binaphthyl group. Their oxidized products, i.e., phosphine oxides with a stereogenic tetrasubstituted carbon atom, were found to undergo BEt3-mediated radical addition to cyclohexene to give P-stereogenic secondary phosphine oxides with a diastereoselectivity of 91:9. The products were characterized by ordinary analytical methods, such as Fourier transform infrared spectroscopy; 1H, 13C, and 31P NMR spectroscopies; and mass spectroscopy. Computational studies on the phosphorus-centered radical species and the obtained product implied that the thermodynamically stable radical and the adduct may be formed as a major diastereomer. The radical addition to a range of alkenes took place in an anti-Markovnikov fashion to give P-stereogenic secondary phosphine oxides. A variety of functional groups in the alkenes were tolerated under the reaction conditions to afford secondary phosphine oxides in moderate yields. Primary phosphines with an alkenyl group, which were generated in situ, underwent intramolecular cyclization to give five- and six-membered cyclic phosphines in high yields after protection by BH3.
Beta Decay in Medium-Mass Nuclei with the In-Medium Similarity Renormalization Group
Authors: Stroberg Steven Ragnar
Published: November 2021

We review the status of ab initio calculations of allowed beta decays (both Fermi and Gamow–Teller), within the framework of the valence-space in-medium similarity renormalization group approach.
The Contribution of Historical and Morphological Studies on Herbarium Specimens to a Better Definition of Chara pelosiana Avetta (Charales, Charophyceae)
Authors: Millozza Anna , Abdelahad Nadia
Published: November 2021

The lectotype of Chara pelosiana Avetta 1898 was designated in 2000 by Langangen, who merged the species with Chara fibrosa Agardh ex Bruzelius. Chara pelosiana belongs to the section Agardhia Wood, but the true identity of the species has yet to be confirmed. The purpose of this work is to show some historical and morphological findings regarding this enigmatic species, on the basis of the analysis of herbarium specimens. The original material, which was studied by Avetta, is missing in Italian herbaria, but portions of it have been found in the Herbarium of Jena. Historical research on botanists related with this species resulted in the discovery of several specimens to be considered “original material”, and new unpublished localities in Northern Italy. Morphological observations have been made on portions of herbarium specimens as a contribution to unveil the taxonomic identity of this taxon. The specimens are diplostichous with ecorticate branchlets, have stipulodes in a single row, one or two per branchlet, and spine cell up to 1 mm long.
Turning Crisis into Opportunities: How a Firm Can Enrich Its Business Operations Using Artificial Intelligence and Big Data during COVID-19
Authors: Chen Yasheng , Biswas Mohammad Islam
Published: November 2021

The COVID-19 pandemic has severe impacts on global health and social and economic safety. The present study discusses strategies for turning the COVID-19 crisis into opportunities to use artificial intelligence (AI) and big data in business operations. Based on the shared experience and theoretical ground, researchers identified five major business challenges during the COVID-19 pandemic: production and supply-chain disruption, appropriate business model selection, inventory management, budget planning, and workforce management. These five challenges were outlined with eight business cases as examples of companies that had already utilized AI and big data for their business operations during the COVID-19 pandemic. The outcomes of this study provide valuable insights into contemporary social science research and business management with AI and big data applications as a business response to any crisis in the future.
Does Tax Incentives Affect Future Firm Value for Corporate Sustainability?
Authors: Na Hyung-Jong , Kang Hyeon , Lee Hyang-Eun
Published: November 2021

This paper investigates how tax benefits for companies affect future firm value and current corporate performance. In addition, this paper also examines the relationship between tax benefits and future firm value for each major industry. The findings of this paper are as follows. First, tax benefits granted to companies improve current corporate performance. The effect of tax benefits that reduce corporate tax costs increases net income, which directly increases current corporate performance, such as ROA (returns on assets) and ROE (returns on equity). Second, tax benefits granted to firms reduce future firm value. Industries that receive tax benefits may have inherent taxation, which can lead to fiercer competition and ultimately lower pre-tax profit margins due to the entry of new companies or the increase in production facilities. In addition, tax benefits that cause temporary differences among the types of tax benefits for a company through deferred tax payments may be factors that hinder future improvements in corporate value. These causes result in the fact that tax benefits for a company can negatively affect its value in the long term. This paper has the following contributions. First, the findings of this paper imply that there is a limit to the positive impact of tax benefits on firms on improving corporate value in the long run. Second, through empirical analysis, this study provides objective information that the impact of tax incentives on corporate value may differ by industry.
Proposing a GEE-Based Spatiotemporally Adjusted Value Transfer Method to Assess Land-Use Changes and Their Impacts on Ecosystem Service Values in the Shenyang Metropolitan Area
Authors: Ma Shuming , Huang Jie , Chai Yingying
Published: November 2021

Understanding land-use dynamics and their impacts on ecosystem service values (ESVs) is critical to conservation and environmental decision-making. This work used the Google Earth Engine (GEE) platform and an adjusted value transfer method to investigate spatiotemporal ESV changes in the Shenyang Metropolitan Area (SMA), a National Reform Pilot Zone in northeast China. First, we obtained land-use classification maps for 2000, 2005, 2010, 2015, and 2020 using a GEE-based Landsat dense stacking methodology. Then, we employed four spatiotemporal correction factors (net primary productivity, fractional vegetation cover, precipitation, and crop yield) in the value transfer method, and analyzed the ESV dynamics. The results showed that forest land and cropland were the two dominant land-use types, jointly occupying 75–89% of the total area. The built-up areas expanded rapidly from 2727 km2 in 2000 to 3597 km2 in 2020, while the cropland kept decreasing, and suffered the most area loss (−1305.09 km2). The ESV of the SMA rose substantially from 814.04 hundred million Chinese Yuan (hmCYN) in 2000 to 1546.82 hmCYN in 2005, then kept decreasing in 2005–2010 (−17.01%) and 2010–2015 (−10.75%), and finally increased to 1329.81 hmCYN in 2020. The ESVs of forest comprised most of the total ESVs, with the percentage ranging from 72.65% to 77.18%, followed by water bodies, ranging from 11.61% to 15.64%. The ESV changes for forest land and water bodies were the main drivers for the total ESV dynamics. Overall, this study illustrated the feasibility of combining the GEE platform and the spatiotemporal adjusted value transfer method into the ESV analysis. Additionally, the results could provide essential references to future environmental management policymaking in the SMA.
Lessons Learnt: Changes in the Methodology of the Entrepreneurial Discovery Process in Defining the Priorities of Hungarian Smart Specialisation Strategies
Authors: Birkner Zoltán , Mészáros Ádám , Szabó István
Published: November 2021

This study shows how one of the fundamental methods of designing and implementing the Smart Specialisation Strategy (S3), the Entrepreneurial Discovery Process (EDP), was applied in the period of 2014–2020 and how, taking accrued experience into account, it has been adjusted in the new planning cycle in Hungarian practice. Based on Hungarian strategies and other policy documents, international and Hungarian literature, the study shows that although the involvement of relevant actors in strategic planning and prioritising was achieved in both cycles, the nature of the actors’ participation differed fundamentally in the two periods. We found that learning from the experience of planning the S3 for 2014–2020, the design of the 2021–2027 strategy required improving the focus of priorities, validating priorities and creating an institutional system capable of making EDP continuous during the cycle 2021–2027, in line with the European Commission’s expectations. We concluded that a well-functioning EDP methodology is an essential part of the substantive realisation of an S3 that can be dynamically shaped according to the challenges.
Strategic Orientation, Digital Capabilities, and New Product Development in Emerging Market Firms: The Moderating Role of Corporate Social Responsibility
Authors: Pan Xiaoyan , Oh Kum-Sik , Wang Mengmeng
Published: November 2021

Strategic orientation represents an important antecedent condition for new product development (NPD) performance, which can help firms create competitive advantage and promote sustainable growth. This study aims to explore the role of strategic orientation (i.e., technology orientation, customer orientation) in promoting firms’ digital capabilities and NPD performance in the context of digital transformation. Using a resource-based view and its extended dynamic capabilities as a theoretical foundation, we provide a comprehensive framework by developing a set of hypotheses. In addition, we examine the moderating effect of corporate social responsibility (CSR) on the relationship between strategic orientation and NPD performance. Using data from a sample of 174 Chinese manufacturing firms, we perform structural equation modelling to empirically test our arguments. Our findings show that technology orientation and customer orientation play a critical role in driving firms’ digital capabilities. Moreover, we find that the two dimensions of strategic orientation tend to exert different effects on NPD performance, with technology orientation playing a more significant role than customer orientation in contributing to NPD performance. Finally, our findings strongly suggest that a firm’s CSR engagement moderates the relationship between its customer orientation and NPD performance, such that the higher the firm’s engagement in CSR, the greater the contribution of customer orientation to the firm’s NPD performance. Our findings provide new insights into non-market mechanisms such as CSR through which firms can compensate for their strategically oriented practices in the NPD process.
Optimal Politics of Conflict over Physical-Industrial Development Using a Technique of Cooperative Game Theory in Iran
Authors: Zahedi Samaneh , Hedayati Aghmashhadi Amir , Fürst Christine
Published: November 2021

One of the most important parameters for economic growth is industrial development in many developing regions like Iran. The Markazi province in the center of Iran is one of the most important industrial areas in the country, where unplanned economic development in recent decades has led to many social and environmental problems. Accordingly, the main organizations involved in industrial development in this region are facing difficulties in the future development of industrial areas, which has become a complex problem. Therefore, the main purpose of this paper is to study the industrial development dispute in the Markazi province through a cooperative model of game theory in order to achieve conflict resolution through a comprehensive approach. In this research, the conflict has been analyzed through strategic analysis of stakeholders. For this purpose, a model of cooperative game theory and its bargaining analysis methods, including social choice rules (SCRs) and fallback bargaining (FB), and six available options were used. According to the six SCRs, the most likely option that can exist between the Department of the Environment (DOE) and the Industrial and Mining Organization (IMO) is compromise coordination (C). In addition, the results of the Fallback Bargaining (FB) rule in three different forms show that the most appropriate options for agreement between the IMO and DOE are the moderate version of construction through arbitration (TCa) and compromise coordination (C). In fact, the results indicate that if the actors involved in this conflict do not cooperate to resolve it, it can lead to more complex problems and the involvement of other groups who may not even have a proper perception of the conflict. In addition, the findings show that cooperation between the parties and understanding of their positions and views along with the policy coherence are necessary to strive for sustainable development and maintain economic growth and development.
Simultaneous Detection of Seven Alternaria Toxins in Mixed Fruit Puree by Ultra-High-Performance Liquid Chromatography-Tandem Mass Spectrometry Coupled with a Modified QuEChERS
Authors: Xing Jiali , Zhang Zigeng , Zheng Ruihang , Xu Xiaorong , Mao Lingyan , Lu Jingping , Shen Jian , Dai Xianjun , Yang Zhenfeng
Published: November 2021

The presence of Alternaria toxins (ATs) in fruit purees may cause potential harm to the life and health of consumers. As time passes, ATs have become the key detection objects in this kind of food. Based on this, a novel and rapid method was established in this paper for the simultaneous detection of seven ATS (tenuazonic acid, alternariol, alternariol monomethyl ether, altenuene, tentoxin, altenusin, and altertoxin I) in mixed fruit purees using ultra-high performance liquid chromatography-tandem mass spectrometry. The sample was prepared using the modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) method to complete the extraction and clean-up steps in one procedure. In this QuEChERS method, sample was extracted with water and acetonitrile (1.5% formic acid), then salted out with NaCl, separated on an ACQUITY UPLC BEH C18 with gradient elution by using acetonitrile and 0.1% formic acid aqueous as eluent, and detected by UPLC-MS/MS under positive (ESI+) and negative (ESI−) electrospray ionization and MRM models. Results showed that the seven ATs exhibited a good linearity in the concentration range of 0.5–200 ng/mL with R2 > 0.9925, and the limits of detection (LODs) of the instrument were in the range of 0.18–0.53 μg/kg. The average recoveries ranged from 79.5% to 106.7%, with the relative standard deviations (RSDs) no more than 9.78% at spiked levels of 5, 10, and 20 μg/kg for seven ATs. The established method was applied to the determination and analysis of the seven ATs in 80 mixed fruit puree samples. The results showed that ATs were detected in 31 of the 80 samples, and the content of ATs ranged from 1.32 μg/kg to 54.89 μg/kg. Moreover, the content of TeA was the highest in the detected samples (23.32–54.89 μg/kg), while the detection rate of Ten (24/31 samples) was higher than the other ATs. Furthermore, the other five ATs had similar and lower levels of contamination. The method established in this paper is accurate, rapid, simple, sensitive, repeatable, and stable, and can be used for the practical determination of seven ATs in fruit puree or other similar samples. Moreover, this method could provide theory foundation for the establishment of limit standard of ATs and provide a reference for the development of similar detection standard methods in the future.
3D LiDAR Scanning of Urban Forest Structure Using a Consumer Tablet
Authors: Çakir Gursel Y. , Post Christopher J. , Mikhailova Elena A. , Schlautman Mark A.
Published: November 2021

Forest measurements using conventional methods may not capture all the important information required to properly characterize forest structure. The objective of this study was to develop a low-cost alternative method for forest inventory measurements and characterization of forest structure using handheld LiDAR technology. Three-dimensional (3D) maps of trees were obtained using an iPad Pro with a LiDAR sensor. Freely-available software programs, including 3D Forest Software and CloudCompare software, were used to determine tree diameter at breast height (DBH) and distance between trees. The 3D point cloud data obtained from the iPad Pro LiDAR sensor was able to estimate tree DBH accurately, with a residual error of 2.4 cm in an urban forest stand and 1.9 cm in an actively managed experimental forest stand. Distances between trees also were accurately estimated, with mean residual errors of 0.21 m for urban forest, and 0.38 m for managed forest stand. This study demonstrates that it is possible to use a low-cost consumer tablet with a LiDAR sensor to accurately measure certain forest attributes, which could enable the crowdsourcing of urban and other forest tree DBH and density data because of its integration into existing Apple devices and ease of use.
RTOB SLAM: Real-Time Onboard Laser-Based Localization and Mapping
Authors: Bauersfeld Leonard , Ducard Guillaume
Published: November 2021

RTOB-SLAM is a new low-computation framework for real-time onboard simultaneous localization and mapping (SLAM) and obstacle avoidance for autonomous vehicles. A low-resolution 2D laser scanner is used and a small form-factor computer perform all computations onboard. The SLAM process is based on laser scan matching with the iterative closest point technique to estimate the vehicle’s current position by aligning the new scan with the map. This paper describes a new method which uses only a small subsample of the global map for scan matching, which improves the performance and allows for a map to adapt to a dynamic environment by partly forgetting the past. A detailed comparison between this method and current state-of-the-art SLAM frameworks is given, together with a methodology to choose the parameters of the RTOB-SLAM. The RTOB-SLAM has been implemented in ROS and perform well in various simulations and real experiments.
Performance Analysis of a Main Drive Motor—Initial Study of an EV Modeling Software Design
Authors: Sumarsono Danardono Agus , Heryana Ghany , Adhitya Mohammad , Nazaruddin  , Siregar Rolan
Published: November 2021

This study aimed to determine and analyze the performance of an electric motor installed in a small city car, which was an internal combustion engine (ICE) car with manual transmission and front-wheel drive converted into an electric vehicle. A manual transmission vehicle was used, considering its type is the cheapest. This was to push aside the perception that electric cars are not accessible to the lower classes. Another technical matter was the focus on the power and torque performance of the electric motor and the transmission. A 7.5 KW three-phase induction motor was installed and assembled with 200 AH 76.8 VDC batteries. Electronic power steering (EPS) and the air conditioner (AC) were not operated, while power for the electrical accessories and power analyzer was obtained from a separate 12 VDC battery. Vehicle analysis focused on the power consumption, which was measured and acquired using a power analyzer. The vehicle was driven in real terms with three passengers. GPS was also used to determine the vehicle position and collect elevation data during testing. The derivatives of the GPS data were the speed, acceleration, and distance traveled by the vehicle. The initial hypothesis was that the car could cover a distance of 30 km with regular usage.
Influence of the oil production complex on surface and underground water and their current ecological state
Authors: Zhelonkina E. E. , Pafnutova E.G. , Fedotov I.S. , Gavrilova V.E.
Published: November 2021

The article deals with the problems of surface waters in the Khanty-Mansi Autonomous Okrug-Yugra, which contain a large amount of oil products and phenols. Oil is the most dangerous pollutant for water resources. The land "flavored" with oil dies for several decades, oil oppresses soil biota, pollutes surface and ground waters. We need innovative purification methods and technologies to purify and improve the conditions of water.
Dependence of cadastral valuation of lands on prestigious of territories
Authors: Varaksin G.S. , Romanov R.V.
Published: November 2021

The article examines the cadastral valuation of land taking into account the zoning of territories by prestige. The authors underline dependence of cadastral value on prestige of the territory and made the conclusions about improvement the system of rational land use during the state cadastral evaluation of land in settlements taking into account the zoning of territories by prestige.
Using Internet for the mass dating of drawings in the Russian state of the late XVII – early XVIII centuries for completing special GIS databases
Authors: Krasovskiy A.P.
Published: November 2021

This article presents the results of assessing the possibility of determining the dates of compiling cartographic materials (drawings) of the Russian state in the second half of the 17th - early 18th centuries using information provided exclusively by Internet resources. For correct dating, the author chose the method based on the analysis of available on historical drawings information about the property of the depicted objects and their owners. The method is mostly based on the content of the drawings making it possible avoid additional information (for example, the names of their compilers). The research was carried out on the example of seventeen drawings of Ruza district, Moscow province of the specified era. Based on data of the selected Internet resources was carried out, the author set the dates of fifteen from seventeen drawings. The accuracy of the results was acceptable, although slightly lower than the results provided by the scientific community, but the effectiveness of the used method turned out to be significantly higher than the traditional ones. The conducted studies have demonstrated the possibility of using the considered method and information sources for the mass dating of the Russian drawings of the late 17th - early 18th centuries, allowing to fill the gaps in relevant information for specialized geographic information systems.
ESTRATEGIA PÚBLICA PARA REDUCIR LA BRECHA DIGITAL EN EL SECTOR EDUCATIVO Y SALUD EN EL ESTADO DE TABASCO ANTES DE LA PANDEMIA
Authors: Murillo-González Gilberto , Martínez-Prats German , Jiménez-Tecillo Francisco Javier , Silva-Hernández Francisca
Published: November 2021

Es indudable el uso en mayor escala el acceso al internet en la sociedad actual desde sus inicios y evolución ha permitido la comunicación y colaboración de información, atravesando barreras de distancia y tiempo, lo que lo ha convertido en el mayor recurso tecnológico usado hoy en día. Sin embargo, la propagación de esta herramienta no ha sido homogénea a nivel mundial, provocando que quienes no cuenten con este servicio se vean en clara desventaja en comparación con los que tienen acceso a él, por lo tanto, se requiere de esfuerzos para realizar una inclusión digital en las zonas donde el servicio es escaso o nulo. Para esto, el gobierno mexicano a través de políticas públicas de desarrollo digital ha impulsado proyectos que cumplan con este fin. Uno de ellos es la política pública: México Conectado, la cual coadyuva al estado de Tabasco para brindar nuevos escenarios de comunicación para la sociedad tabasqueña.
MERCADOTECNIA CON CAUSA EN TIEMPOS DE CORONAVIRUS
Authors: Álvarez-García Mónica , Guerrero-Ibarra Carlos , Larios-Calva Margarita
Published: November 2021

El presente documento es el resultado del análisis de una revisión documental y cibergráfica dividida en dos partes, la primera  para revisar los conceptos de mercadotecnia, mercadotecnia social y mercadotecnia con causa, la segunda consistió en revisar  en las diferentes redes sociales a las empresas que aplicaron estrategias de mercadotecnia con causa en la pandemia por COVID-19 durante el periodo de abril 2020 a marzo de 2021 para entender como éstas, a través de sus actividades ayudaron a la sociedad y sector gubernamental para hacer frente a esta situación, pero sobre todo en el sector salud. Estas empresas lograron crear alianzas con organizaciones sin fines de lucro para mejorar su imagen y lealtad al igual que el de sus productos o servicios, esperando ser vistas como empresas socialmente responsables que ayudaron a la comunidad a la vez que se beneficiaron en el incremento de sus ventas.
ACCIONES DE RESPONSABILIDAD SOCIAL MERCADOLOGICA EN TORNO AL COVID-19 EN RESTAURANTES DE LA CIUDAD DE CHILPANCINGO, GUERRERO
Authors: Susano-García José Luis , Cabrera-Ríos María Del Socorro , Bonilla-Gómez Martha Adela
Published: November 2021

Derivado de la contingencia sanitaria se ha generado una serie de problemáticas que ha afectado de manera directa a las empresas, en ese sentido las afectaciones en materia de mercadotecnia, son bajas ventas, canales de distribución, nuevas formas de consumo, uso de tecnologías, nuevas necesidades entre otras; que se reflejan en el posicionamiento y competitividad de las empresas.

El trabajo versa sobre un estudio exploratorio realizado a MiPYMES del sector servicios, caso concreto restaurantes de la ciudad de Chilpancingo, Guerrero, con la finalidad de conocer las acciones de Responsabilidad Social mercadológica que han aplicado para hacer frente a la pandemia del COVID-19 y cuidar la salud de sus consumidores y empleados.

Entre los hallazgos encontrados en el estudio referentes a la salud de los consumidores y empleados  de los restaurantes están reducción de número de comensales, separación de espacios, colocación de tapete sanitizante, gel antibacterial, medidor de temperatura, toma de pedidos por internet, redes sociales, ventas telefónicas, cobros por tarjeta y depósito bancario, kit de protección para trabajadores, comunicación de información en materia de salud, etc.
Building the case for the use of gut feelings in cancer referrals: perspectives of patients referred to a non-specific symptoms pathway
Authors: Smith Claire Friedemann , Kristensen Benedikte Møller , Andersen Rikke Sand , Ziebland Sue , Nicholson Brian D
Published: November 2021

Background

Gut feelings may be useful when dealing with uncertainty, which is ubiquitous in primary care. Both patients and GPs experience this uncertainty but patients’ views on gut feelings in the consultation have not been explored.

Aim

To explore patients’ perceptions of gut feelings in decision making, and to compare these perceptions with those of GPs.

Design and setting

Qualitative interviews with 21 patients in Oxfordshire, UK.

Method

Patients whose referral to a cancer pathway was based on their GP’s gut feeling were invited to participate. Semi-structured interviews were conducted from November 2019 to January 2020, face to face or over the telephone. Data were analysed with a thematic analysis and mind-mapping approach.

Results

Some patients described experiencing gut feelings about their own health but often their willingness to share this with their GP was dependent on an established doctor–patient relationship. Patients expressed similar perspectives on the use of gut feelings in consultations to those reported by GPs. Patients saw GPs’ gut feelings as grounded in their experience and generalist expertise, and part of a process of evidence gathering. Patients suggested that GPs were justified in using gut feelings because of their role in arranging access to investigations, the difficult ‘grey area’ of presentations, and the time- and resource-limited nature of primary care. When GPs communicated that they had a gut feeling, some saw this as an indication that they were being taken seriously.

Conclusion

Patients accepted that GPs use gut feelings to guide decision making. Future research on this topic should include more diverse samples and address the areas of concern shared by patients and GPs.
Risk prediction models for symptomatic patients with bladder and kidney cancer: a systematic review
Authors: Harrison Hannah , Usher-Smith Juliet A , Li Lanxin , Roberts Lydia , Lin Zhiyuan , Thompson Rachel E , Rossi Sabrina H , Stewart Grant D , Walter Fiona M , Griffin Simon , Zhou Yin
Published: November 2021

Background

Timely diagnosis of bladder and kidney cancer is key to improving clinical outcomes. Given the challenges of early diagnosis, models incorporating clinical symptoms and signs may be helpful to primary care clinicians when triaging at-risk patients.

Aim

To identify and compare published models that use clinical signs and symptoms to predict the risk of undiagnosed prevalent bladder or kidney cancer.

Design and setting

Systematic review.

Method

A search identified primary research reporting or validating models predicting the risk of bladder or kidney cancer in MEDLINE and EMBASE. After screening identified studies for inclusion, data were extracted onto a standardised form. The risk models were classified using TRIPOD guidelines and evaluated using the PROBAST assessment tool.

Results

The search identified 20 661 articles. Twenty studies (29 models) were identified through screening. All the models included haematuria (visible, non-visible, or unspecified), and seven included additional signs and symptoms (such as abdominal pain). The models combined clinical features with other factors (including demographic factors and urinary biomarkers) to predict the risk of undiagnosed prevalent cancer. Several models (n = 13) with good discrimination (area under the receiver operating curve >0.8) were identified; however, only eight had been externally validated. All of the studies had either high or unclear risk of bias.

Conclusion

Models were identified that could be used in primary care to guide referrals, with potential to identify lower-risk patients with visible haematuria and to stratify individuals who present with non-visible haematuria. However, before application in general practice, external validations in appropriate populations are required.
EPIDEMIOLOGICAL ASSESSMENT OF PEDIATRIC CARDIOVASCULAR SURGICAL PATHOLOGIES AT A PUBLIC HOSPITAL IN THE STATE OF SANTA CATARINA, BRAZIL
Authors: Pellissari Giovana Costa , Ronconi Marina Duda , Kitaura Amanda Tami , Sum Cassio Fon Ben , Henning Elisa , Franco Selma Cristina
Published: November 2021

Introduction: to describe the epidemiological profile of patients cared for by the pediatric cardiac surgery service at a referral center in the State of Santa Catarina, Brazil, during five years. Methods: retrospective, longitudinal cohort-type study of cardiovascular surgeries performed in children aged less than 18 years in a Unified Health System-affiliated hospital, from 3rd August 2013 to 2nd August 2018. Patients' demographic, clinical, and healthcare characteristics were assessed. The complexity and severity of the surgeries were assessed using the RACHS-1 method. Negative outcomes were deaths up to thirty days after surgery and complications (mediastinitis, renal failure, and systemic infection). Results: 1,191 procedures were performed, with a predominance of male (53.5%) infants (52.8%) from more near regions of the state (33.6%) and prevalence of RACHS-1 category 3 (36.5%). Most patients had undergone cardiopulmonary bypass (53.7%), mechanical ventilation (94.8%), and only one surgical procedure (56.3%). The most frequent pathology was ventricular septal defect. (15.7%). The median length of hospital stay was eighteen days, six days at intensive care units, and three days of preoperative waiting time. Lethality up to 30 days after surgery was 6%, and complications affected 22.4% of patients. The main factor associated with negative outcomes was represented by the RACHS-1 score with higher categories. Conclusion: This Unified Health System pediatric cardiac surgery service was relevant due to the magnitude of the procedures performed, and the healthcare complexity involved. The set of outcomes presented in this study indicated good healthcare quality in comparison to national standards.
Mengenalkan Jenis Profesi dan Jasa Akuntan pada Mahasiswa Baru dalam Upaya Meneguhkan Minat Studi Akuntansi Syariah dan Menyongsong Era Society 5.0
Authors: Zunaidi Arif , Natalina Sri Anugerah , Laksana Moh. Ary
Published: November 2021

Era industri 4.0 telah mengubah tatanan hidup manusia menjadi lebih tergantung pada tehnologi. Dunia akuntan pun tak luput akan perubahan, baik secara perangkat atau pun kegiatannnya. Belum selesai tantangan yang harus dihadapi oleh hadirnya era industri 4.0, kini hadir era baru yaitu era society 5.0. Era baru ini tentu masih asing di telinga para mahasiswa baru di lingkungan Fakultas Ekonomi dan Bisnis Islam IAIN Kediri. Ditambah lagi dengan tantangan dan peluangnya yang berdasarkan beberapa sumber berdampak pada hilangnya jenis profesi dan jasa akuntan menyebabkan pemangku kebijakan dalam hal ini adalah pengelola Program Studi Akuntansi Syariah berkewajiban untuk meneguhkan minat para mahasiswa baru bahwa pilihan mereka tidaklah salah. Untuk itu dibutuhkan sebuah kegiatan yang dapat menumbuhkan motivasi dari beberapa kalangan agar para mahasiswa semakin memantapkan pilihan mereka. Kegiatan pengabdian masyarakat ini dilaksanakan secara online dalam bentuk webinar dengan memanfaatkan media zoom meeting ebagai perantaranya. Tujuan dari kegiatan ini adalah memberikan beberapa pengetahuan dan modal dasar untuk belajar dan memantapkan pilihan pada Program Studi Akuntansi Syariah. Ada banyak profesi dan jasa akuntan yang dibutuhkan pada era society 5.0. Semua tergantung keahlian yang dimiliki. Kegiatan ini berhasil memberikan pengetahuan dan memantapkan para mahasiswa baru untuk terus berprestasi dan aktif selama perkulihan sembari menyongsong hadirnya era society 5.0.
Bertutur Radikalisme terhadap Pemberdayaan Manusia
Authors: Sarbunan Thobias
Published: November 2021

Program pengabdian masyarakat merupakan titik tumpuh bagi peningkatan kapital manusia untukmelanjutkan taraf hidup yang teratur. Program ini merupakan bagian dari pengembangan ilmu dan dapatditinjau dalam perspektif sosial maupun kemanusiaan, yang mendalam. Pada kenyataannya, program initidak selalu berujung signifikan, dikarenakan berbagai faktor yang sangat mungkin memengaruhi, termasukkebijakan pemerintah. Dengan demikian, program dan kerangka evaluasi pemberdayaan masyarakatsangat perlu untuk dikonstruksikan, lewat salah satu pendekatan, yaitu kajian ilmiah. Evaluasi merupakanalat untuk mengukur kapasitas aktor yang melaksanakan satu program atau kegiatan, juga merupakanlaboratorium ilmiah dalam melihat kedalaman serta sinkronisasi materi serta media yang dipakai selamaprogram berlangsung. Lebih mendalam yaitu, evaluasi sangat memengaruhi dampak dari luaran program,apakah berjalan berkesinambungan, mati suri, maupun, terhambat. Lebih jauh lagi, evaluasi dipakai untukmengontrol kebijakan pemerintah agar dapat bersinergi dengan berbagai program pembangunanmasyarakat serta lingkungan, untuk mencapai perkembangan bangsa yang maju di segala lini. Maka itu,artikel ini bernarasi tentang pengembangan program evaluasi terhadap berbagai jenis programpemberdayaan masyarakat, yang dapat diadaptasi oleh para pelaku program ini. Kesimpulan yang sayalihat yaitu program evaluasi memberikan ruang bagi seluruh pelaku program dan sekaligus pemerintahdalam usaha untuk mengembangkan segala potensi bangsa yang dapat dipakai sebagai investasi jangkapanjang.
Dynamics in two competing predators-one prey system with two types of Holling and fear effect
Authors: Firdiansyah Adin Lazuardy , Nurhidayati Nurhidayati
Published: November 2021

In this article, it is formulated a predator-prey model of two predators consuming a single limited prey resource. On the other hand, two predators have to compete with each other for survival. The predation function for two predators is assumed to be different where one predator uses Holling type I while the other uses Holling type II. It is also assumed that the fear effect is considered in this model as indirect influence evoked by both predators. Non-negativity and boundedness is written to show the biological justification of the model. Here, it is found that the model has five equilibrium points existed under certain condition. We also perform the local stability analysis on the equilibrium points with three equilibrium points are stable under certain conditions and two equilibrium points are unstable. Hopf bifurcation is obtained by choosing the consumption rate of the second predator as the bifurcation parameter. In the last part, several numerical solutions are given to support the analysis results.
Penyesuaian Diri, Dukungan Sosial, dan Gaya Belajar Visual : Kontribusi terhadap Stres Akademik Siswa di Masa Pandemi
Authors: Putri Riva Nadia , Hidayah Nurul , Mujidin
Published: November 2021

This study aims to test empirically the effect of self adjustment, social support, visual learning style on academic stress in seventh grade students of SMP Negeri X Yogyakarta. This research method is a quantitative method with a Likert scale model as a data collection tool.  The subjects of this study were seventh grade students of SMP X Yogyakarta. The sampling technique was carried out by cluster random sampling technique. Data analysis of this research is multiple regression analysis technique with the help of SPSS 21 program. The results of data analysis showed: (1) there was a very significant influence between self-adjustment, social support, visual learning style on academic stress as indicated by F reg = 107.076 with p value = 0.000 (p <0.01). (2) there is an effect of adjustment to academic stress which is indicated by the value of t = -13,349 with a value of p = 0.000 (p <0.01). (3) there is no significant effect between social support and academic stress as indicated by the value of t = -1.726 with a value of p = 0.086 (p>0.01). (4) There is no significant effect between visual learning style and academic stress which can be seen from the value of t = 1.944 with a value of p = 0.054 (p>0.01). The conclusion of this research is that there is an effect of self adjustment, social support, visual learning style on academic stress.