bluuebunny/crossref_metadata_2025 huggingface dataset:
Visual Harmony of the Proportion of Water and Greenery in Urban Streams: Baxi Stream, Yongan City, China
Authors: Chen Jinn-Chyi , Fan Xun-Rui , Fan Jian-Qiang , Lai Xi-Zhu , Li Gui-Liang , Li Feng-Bin
Published: January 2023

This study investigated the visual harmony of an urban stream considering changes to the ratio of water to greenery on the riverbed. The Baxi stream, a third-order stream in Yongan City, Fujian Province, China was selected as the study site. The stream reach is disturbed by several hydraulic structures, such as restricted water flow by a vertical revetment and water level regulation by submerged dams. Images of the river were captured, and image processing was performed to change the proportion of water and greenery, and the proportions of various landscape elements in the image were calculated. Based on the statistical analysis of survey results, cognitive indicators (vividness and naturalness) associated with harmony and preference, and the relationship between harmony or preference and landscape elements, were established. Landscape elements included ratios of visible water (WR), visible greenery (GR), visible buildings, and visible infrastructure. The results demonstrated that visual preference, P, is positively correlated with harmony, H, vividness, V, and naturalness, N. In particular, H is almost consistent to P. The proportion of visible water and greenery had a significant impact on the H and P of the stream landscape. When the ratio of WR to GR was approximately 0.8, H was optimal, and the public’s P was high. These results can be used to improve and enhance the visual landscape quality of this stream reach. The methodology proposed in this study could provide other study areas with a reference for how to obtain the best visual harmony or achieve public acceptance by changing the amount of visible water and/or greenery.
Simulation of Contaminant Transport through the Vadose Zone: A Continuum Mechanical Approach within the Framework of the Extended Theory of Porous Media (eTPM)
Authors: Seyedpour S. M. , Thom A. , Ricken T.
Published: January 2023

The simulation of contaminant transport through the vadose zone enjoys high significance for decision makers and contaminated site planners since the vadose zone can serve as a filter, but many contaminants can be transported from this region to aquifers. The intention of this paper is to utilize the extended Theory of Porous Media (eTPM) to develop a ternary model for the simulation of contaminant transport in the vadose zone whose application is subsequently shown via a numerical example. The simulation was conducted for 140 days, during which the contamination source was removed after 25 days. The results indicate that the contaminant reached the water table after 76 days. The concentration of the contaminant reaching the groundwater was 17% less than that of the contaminant source.
Identification, Abundance, and Distribution of Microplastics in Surface Water Collected from Luruaco Lake, Low Basin Magdalena River, Colombia
Authors: Rojas-Luna René A. , Oquendo-Ruiz Luisa , García-Alzate Carlos A. , Arana Victoria A. , García-Alzate Roberto , Trilleras Jorge
Published: January 2023

There are few studies on microplastic (MP) contamination in Colombia, and little is known about its impacts on continental aquatic ecosystems. This study evaluated, for the first time, the identification, abundance, and distribution of MP particles in the surface water of Luruaco Lake, in the low basin of the Magdalena River, Colombia, included in national programs in marine sciences and hydrobiological resources. Six stations and four samplings were established in the dry and rainy seasons. A total of 72 water samples were collected for microplastic extraction using hydrogen peroxide (H2O2) digestion, density separation with sodium chloride solution (NaCl), and filtration. The abundance of MPs ranged from 0 to 3.83 MPs·L−1, with an average of 1.90 MPs·L−1 in the rainy season and 0.25 MPs·L−1 in the dry season. According to the calculated coefficient of microplastics impact, the contamination in the surface water of Luruaco Lake is “maximum” to “extreme” for fibers with an average length of 2.05 mm and “minimum” to “average” for fragments that are 0.35 mm in size on average. Polyester (PES, 57.9%), polystyrene (PS, 47.0%), and polyethylene terephthalate (PET, 35.3%) polymers were more abundant in surface water. The temporal variation of the MPs indicates contamination related to the discharges of the tributary streams to the lake in the rainy season.
Effects of Boulder Arrangement on Flow Resistance Due to Macro-Scale Bed Roughness
Authors: Nicosia Alessio , Carollo Francesco Giuseppe , Ferro Vito
Published: January 2023

Flow resistance in gravel-bed channels is not only affected by the shape and size of the roughness elements, but also by their arrangement on the channel bed surface (position to flow streamlines, spacing between elements, and their protrusion from the channel bed). Many investigations proved that open channel flow resistance can be obtained by integrating the power velocity profile. For a macro-scale roughness condition, this study aims to investigate the effect of different boulder arrangements on flow resistance. First, for each arrangement, the equation relating Γ function of the power velocity profile, the Froude number, and the channel slope was calibrated using available measurements performed in a flume covered by pebbles with “Random”, “Transversal stripe”, and “Longitudinal stripe” arrangements. For each arrangement, the experimental datasets were divided to consider the effects of boulder concentration Ch. Moreover, the relationship obtained for the “Random” arrangement and element concentration lower than 48% was tested using literature measurements performed in a flume covered by coarse elements randomly arranged. Finally, the effects of the different boulder arrangements on the flow resistance law were investigated by imposing a concentration threshold. The results demonstrated that (i) the Darcy–Weisbach friction factor can be accurately estimated by the proposed flow resistance equation, (ii) the flow resistance increases with Ch for low values (<48%) of concentration, while it does not depend on Ch for high concentrations (≥48%), and (iii) the effect of the boulder arrangement on flow resistance law is more evident for low element concentrations.
Seasonal Changes in Upper Thermal Tolerances of Freshwater Thai Fishes
Authors: Tongnunui Sampan , Sooksawat Treerat , Chotwiwatthanakun Charoonroj , Supiwong Weerayuth , Wattanakornsiri Amnuay , Beamish F. W. H.
Published: January 2023

Seasonal change inferred to climate change inevitably influences Critical thermal maximum (CTmax) of riverine fishes. In this study, we investigated CTmax as thermal tolerance for four common riverine fishes, i.e., Danio regina, Channa gachua, Rasbora caudimaculata and Mystacoleucus chilopterus, in the Kwae Noi river system in western Thailand. The acute thermal tolerance was lower in the wet season (mean river temperature ∼25 °C) and higher in the dry season (mean river temperature ∼23 °C) with medians of wet season-CTmax for those four fishes of 35.3 ± 0.4, 36.2 ± 0.5, 37.3 ± 0.5 and 37.5 ± 0.6 °C, respectively, and high values of dry season-CTmax of 37.4 ± 0.5, 38.3 ± 0.5, 38.7 ± 0.7 and 39.1 ± 0.5 °C, respectively. The variations of CTmax for all of the four species in this study, throughout the wet and dry seasons, attribute to their seasonal plasticity in response to the dynamics of thermal stress. Under climate variability and climate change with increasing the higher temperatures of air and river, and altering the habitat, R. caudimaculata and M. chilopterus had higher capacities to tolerate the acute heat stress across wet and dry seasons.
Effect of the Pulsed Addition of Phosphorous on the Growth and Toxin Production of the Bloom-Forming Cyanobacterium Chrysosporum ovalisporum (Forti) Zapomelová et al.
Authors: Yin Sicheng , Huang Ruohan , Wang Ni , Li Changxing , Jeppesen Erik , Wang Liqing , Zhang Wei
Published: January 2023

Eutrophication and global warming boost the outbreak of cyanobacterial blooms and the spread of invasive cyanobacterial species such as Chrysosporum ovalisporum. Different from the often steady-state conditions under laboratory cultivation, the external input of nutrients in natural water is often intermittent and pulsed, which may affect the response of cyanobacteria. In this study, we cultured C. ovalisporum under two phosphorus treatment patterns: a one-time treatment and a five-time pulsed treatment with the same total dosing. Our results showed that phosphorus deficiency in the water inhibits the growth of C. ovalisporum, thereby significantly reducing its biomass and photosynthetic activity (p < 0.05). In addition, phosphorus deficiency led C. ovalisporum to secrete more exopolysaccharides and alkaline phosphatase. Compared with the one-time treatment, the multiple pulses promoted the absorption of phosphorus by C. ovalisporum and inhibited the synthesis of alkaline phosphatase but had no significant effect on the release of cylindrospermopsin (CYN). We also found that multiple pulses had a more significant growth-promoting effect on C. ovalisporum under low phosphorus concentrations. Our results indicated the overall strong adaptability of C. ovalisporum to dynamic changes in phosphate levels in the water column and provide new insight into the outbreak and dispersal strategies of C. ovalisporum.
Ecological Health Assessment with the Combination Weight Method for the River Reach after the Retirement and Renovation of Small Hydropower Stations
Authors: Cai Feng , Hu Zhinan , Jiang Beihan , Ruan Weifang , Cai Shujuan , Zou Huiling
Published: January 2023

This study aimed to effectively evaluate the ecological restoration of the river reach where a small hydropower station was retired or renovated. An ecological health index system was constructed based on the environmental characteristics of the upstream and downstream of the small hydropower station after its retirement and renovation. Based on the combination weighting concept of game theory, the combination weights were obtained by the comprehensive analytic hierarchy process (subjective weight) and entropy method (objective weight). This ecological health assessment with fuzzy comprehensive evaluation was applied to assess the health status of Shimen (dam removal) and Changqiao (renovation in ecological flow) reaches of the Tufang River in Changting County, China. The results showed that the ecological health assessment index system proposed in this study was comprehensive and reasonable, and the revision degree of the hydropower station obviously influenced the process of ecological river restoration. The findings from this study would benefit for the rational utilization of water resources and the river ecological health maintenance in mountainous areas.
Temporal Variation and Spatial Distribution of Groundwater Level Changes Induced by Large Earthquakes
Authors: Liu Ching-Yi , Chia Yeeping , Chung Po-Yu , Lee Tsai-Ping , Chiu Yung-Chia
Published: January 2023

Sustained coseismic changes in groundwater level due to static strain during earthquakes could be considered as an indicator of crustal deformation. These changes usually occur abruptly but recover slowly after earthquakes. High-frequency data indicate a time lag between the coseismic change of well water levels and that of the groundwater levels in the aquifer. Abnormal post-seismic changes in groundwater level were observed, possibly caused by cross-formation flow, fracturing, or strain relief. Although sustained changes are generally induced by a local earthquake, they could also be triggered by a distant large earthquake that has occurred at the same tectonic plate. The magnitude and polarity of coseismic changes may vary in wells of different depths at multiple-well stations, revealing additional information about the complexity of crustal deformation in the subsurface. Coseismic falls dominated near the ruptured seismogenic fault during the 1999 M7.6 earthquake, which implied crustal extension adjacent to the thrust fault. However, coseismic rises prevail in most areas, suggesting that crustal compression caused by plate convergence plays a major role on the island of Taiwan during earthquakes.
The Dynamics of Hydrological Extremes under the Highest Emission Climate Change Scenario in the Headwater Catchments of the Upper Blue Nile Basin, Ethiopia
Authors: Chakilu Gashaw Gismu , Sándor Szegedi , Zoltán Túri
Published: January 2023

Climate change and its impact on surface runoff in the upper Blue Nile basin and sub-basins have been widely studied in future climate projections. However, the impact on extreme flow events of rivers is barely investigated discretely. In this paper, the change in temperature and rainfall under the Representative Concentration Pathway (RCP) highest emission scenario (RCP 8.5) and its impact on the high flow and low flow simulated by the Soil and Water Assessment Tool (SWAT 2012) in major watersheds of the Lake Tana Basin has been evaluated by comparing the baseline period (1971–2000) with the 2020s (2011–2040), 2050s (2041–2070), and 2080s (2071–2100). The high flows of watersheds were selected by the Annual Maximum Series (AMS) model, whereas the low-flow watersheds were selected by the 7-day sustained mean annual minimum flow method. The result showed that the highest change in maximum temperature ranged from 2.93 °C to 5.17 °C in monthly time scales in the 2080s. The increment in minimum temperature is also more prominent in the 2080s and it is expected to rise by 4.75 °C. Inter-annual variability of the change in rainfall has shown increasing and decreasing patterns. The highest increments are expected by 22.37%, 25.58%, and 29.75% in the 2020s, 2050s, and 2080s, respectively, whereas the projected highest decrease in rainfall dictates the decrease of 6.42%, 7.11%, and 9.26% in 2020s, 2050s, and 2080s, respectively. Due to changes in temperature and rainfall, the low flow is likely to decrease by 8.39%, 8.33%, 6.21%, and 5.02% in Ribb, Gumara, Megech, and Gilgel Abay watersheds, respectively, whereas the high flow of Gilgel Abay, Megech, Gumara, and Ribb watersheds are expected to increase by 13.94%, 12.16%, 10.90%, and 10.24%, respectively, every 30 years.
Patterns of Recent Changes in Channel Morphology and Flows in the Upper and Middle Odra River
Authors: Nádudvari Ádám , Czajka Agnieszka , Wyżga Bartłomiej , Zygmunt Marcin , Wdowikowski Marcin
Published: January 2023

Our research introduces the river regulation effects on three sections of the upper and middle Odra River (south-western Poland), with differently channelized parts. In the upper and lower reaches, the river was straightened, narrowed, and trained with groins, whereas in the middle section, it was also impounded by numerous barrages. The discharge duration (DD) and water stage duration (WSD) curves for water-gauge stations from these river sections were analyzed to recognize changes in river flows and channel morphology since the mid-20th century. This analysis is supplemented by an examination of repeated surveys of the gauge cross sections of the river, annual precipitation totals in its catchment, and their relationship to the variation of the North Atlantic Oscillation (NAO) index. Our findings provide new hydrological insights for the region. The three river sections exhibited different patterns of the adjustment of the channel morphology to the river channelization: upper section was typified by channel incision, middle section by channel stability, and lower section by channel incision in its upper part and vertical stability of the channel bed in the lower part. Barrages in the middle section stabilized water stages in a wide range of hydrological conditions. Annual precipitation totals and river run-off did not change systematically over the study period. The variation in precipitation totals was inversely related to annual values of the NAO index. The study confirms the usefulness of DD/WSD curves to analyze changes in river run-off and the vertical position of the channel bed.
Spent Nuclear Fuel—Waste or Resource? The Potential of Strategic Materials Recovery during Recycle for Sustainability and Advanced Waste Management
Authors: Holdsworth Alistair F. , Eccles Harry , Sharrad Clint A. , George Kathryn
Published: January 2023

Nuclear fuel is both the densest form of energy in its virgin state and, once used, one of the most hazardous materials known to humankind. Though commonly viewed as a waste—with over 300,000 tons stored worldwide and an additional 7–11,000 tons accumulating annually—spent nuclear fuel (SNF) represents a significant potential source of scarce, valuable strategic materials. Beyond the major (U and Pu) and minor (Np, Am, and Cm) actinides, which can be used to generate further energy, resources including the rare earth elements (Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, and Tb), platinum group metals, (Ru, Rh, Pd, and Ag), noble gases (He, Kr, and Xe), and a range of isotopes useful for medical and energy generation purposes are also produced during fission. One reason for the accumulation of so much SNF is the low uptake of SNF recycle (or reprocessing), primarily due to the high capital and operational costs alongside concerns regarding proliferation and wastes generated. This study will highlight the predominantly overlooked potential for the recovery of strategic materials from SNF, which may offset costs and facilitate advanced waste management techniques for minimised waste volumes, thus increasing the sustainability of the nuclear fuel cycle on the path towards Net Zero. Potential challenges in the implementation of this concept will also be identified.
The Role of Attitude, Travel-Related, and Socioeconomic Characteristics in Modal Shift to Shared Autonomous Vehicles with Ride Sharing
Authors: Aboutorabi Kashani Mahsa , Abbasi Mohammadhossein , Mamdoohi Amir Reza , Sierpiński Grzegorz
Published: January 2023

The integration of automation and shared mobility services would significantly affect transportation demand, especially mode choice. However, little is known about how attitudes, travel attributes, and demographic factors affect the modal shift to shared autonomous vehicles (SAVs). A stated preference survey was designed to determine the preferences of car and transit users in relation to a modal shift to SAVs. The binary logit models’ results revealed distinct behavior patterns and systematic heterogeneity among transit and private car users based on a representative sample of 607 individuals in 2021. The shifting behavior of both users is positively affected by attitudinal factors, including consumer innovativeness, perceived usefulness, sharing intention, and ecological awareness, while negatively affected by privacy concerns. In terms of travel-related attributes of SAVs, car users are eight times more sensitive to waiting times compared to transit users, who are three times more concerned with travel costs. Further, privacy concerns, the number of passengers sharing a trip, and the ratio of waiting time to travel time of SAVs were the major barriers to shifting the likelihood of car users’ behavior. In light of these findings, based on the likely effects of SAVs on shifting behavior, a number of practical implications are suggested for more effective policy making.
Fuel-Efficiency Improvement by Component-Size Optimization in Hybrid Electric Vehicles
Authors: Srivastava Swapnil , Maurya Sanjay Kumar , Chauhan Rajeev Kumar
Published: January 2023

Hybrid electric vehicles (HEV) play an important role in sustainable transportation systems. The component size of HEV plays a vital role in the fuel efficiency of vehicles. This paper presents a divided rectangle (DIRECT) method for component sizing of vehicles to ensure better fuel efficiency and satisfying drivability. A state–space model was used to represent the design problem. A constraint multi-input multi-output optimization problem was solved by our DIRECT optimization algorithm. Efficacy of the algorithm was tested with standard drive cycles, including drive cycles for Indian urban and highway conditions representing various driving scenarios in the country. The simulation results illustrated the effectiveness of the proposed algorithm.
Review on Smart Charging of Electric Vehicles via Market-Based Incentives, Grid-Friendly and Grid-Compatible Measures
Authors: Johnsen Doris , Ostendorf Lars , Bechberger Mischa , Strommenger Daniel
Published: January 2023

Smart charging of electric vehicles is a promising concept for solving the current challenges faced by connecting mobility and electricity within the context of the ongoing sustainable energy transition. It allows cost savings for the expansion and operation of the power grid and a more efficient use of renewable energies. However, wide implementation of smart charging requires further work on technical and regulatory issues and further development of standards, especially an end-to-end consistency of the control signals. A fully automated process, as well as customisable services and flexible tariffs, would also facilitate wider market penetration. The novelty of this paper is the consensus of German pilot projects funded within the German programme “Elektro-Mobil” on the communication channel between all stakeholders for the use cases of smart charging based on market price incentives. Within this consensus, the projects have illustrated how specific standards can facilitate the communication between smart charging stakeholders, become a reality in the pilot projects and should be applied to further use cases in the low-voltage network. This consensus results in a white paper. On this basis, the adjustment of the standards can be made to ensure the consistency of the control signals from the beginning of the control process up to the end. In an advanced Edition, solutions for the prioritisation and orchestration of the different control signals could be designed.
Modern requirements for collection, storage and transportation of biological material (sputum) for microbiological research
Authors:   SBHI SR «Tolyatti City Clinical Hospital No. 5», Tolyatti, Russia, Lebedenko T. I.
Published: January 2023

The effectiveness of medical care, the outcome of diseases and the ability to work of patients depend on early diagnosis and the appointment of etiologically correct treatment, on the implementation of the entire volume of prescribed treatment, among which laboratory diagnostics is of particular importance.
Diagnostics and treatment of respiratory failure
Authors:   Volgograd State Medical University, Ministry of Health of the Russian Federation,, Ponomareva A. R. , Skvortsov V. V. ,   Volgograd State Medical University, Ministry of Health of the Russian Federation,, Bangarov R. Yu. ,   FSBI “NMIC TIO named after V.I. Shumakov (branch), Volzhsky, Russia
Published: January 2023

Respiratory failure is a pathological condition in which the partial oxygen voltage in arterial blood (RaO2) is less than 60 mmHg and/or the partial carbon dioxide voltage (PaCO2) is greater than 45 mmHg. This indicates that the necessary gas composition of the blood is not provided, or it is maintained by overstressing the compensatory capabilities of the external respiratory apparatus. Respiratory insufficiency is based on a violation of gas exchange in the lungs: the body does not receive the necessary amount of oxygen, and an excessive amount of carbon dioxide accumulates, which leads to oxygen starvation, primarily of vital organs – the heart and brain.
Possibilities of searching the specialists in conditions of staff deficiency
Authors:   FSBEI HE “Samara State Medical University” of the Ministry of Healthcare of Russia, Samara, Russia, Rechkin A. V.
Published: January 2023

In the article, the author talks about the possibilities that the head of the nursing service can use to search for specialists in order to ensure the organization and implementation of nursing practice.
Frequency of congenital malformations in the ecological zones of rural areas of the Republic of Dagestan
Authors:   Dagestan State Medical University of the Ministry of Health of the Russian Federation, Makhachkala, Russia, Surkhayeva Z. Z. , Magomedova U. A. ,   Dagestan State Medical University of the Ministry of Health of the Russian Federation, Makhachkala, Russia, Kazanbieva P. D. ,   Dagestan State Medical University of the Ministry of Health of the Russian Federation, Makhachkala, Russia
Published: January 2023

One of the indicators of the health of the child population is the frequency of congenital malformations (CMD), which include volume and death. The incidence rate of congenital malformations is one of the objective indicators reflecting the socio-economic and environmental well-being of society. The frequency and structure of significant congenital malformations vary not only in different states, but also within and within the territory of one country. The purpose of this study was a retrospective assessment of the features of the epidemiology of congenital malformations in children by ecological zones and resources in the risk zone of Dagestan in 2015–2019. The WPR in Dagestan is characterized by intensive growth over a 5‑year period, as well as a wide range of emissions across ecological zones and administrative regions of limited territories and cities. In the environmental monitoring zone in 2016, the CPP showed 67.1 %, and in 2017 — negative — 2.3 %, in the foothill environment there was a positive and fluctuating from 83.3 % in 2016 to 2, 3 % — in 2017. In the mountainous environment observed in 2016 and 2017. The CPP was controversial, at 28.1 % and 20.0 % respectively. In Dagestan, for 5 years, the CPP was estimated, although it fluctuated significantly over the years. The problems of CM deserve closer attention, and not only and not so much in terms of epidemiological and environmental plans. Prevention of congenital malformations is one of the environmental problems in the field of health protection.
The processing method of the parameters of the beam pattern of phased array antennas
Authors:   Bauman Moscow State Technical University, Moscow, Yudachev S. S. , Komissarova E. V. ,   Bauman Moscow State Technical University, Moscow, Lysenko N. I. ,   Bauman Moscow State Technical University, Moscow, Mingazova K. S. ,   Bauman Moscow State Technical University, Moscow
Published: January 2023

The investigation results of the radiation pattern as one of the important parameters of the phased array antenna are presented at the article. Practical results: obtaining skills in using MathCad and researching methods for improving the directional pattern in order to increase the accuracy of determining the goal. The paper presents an algorithm for calculating the radiation pattern of antenna arrays with four modules and a method for improving it. Software and mathematical results are available in the Internet for free, that allows anyone to do similar work to confirm the calculations and conclusions. The results could be used at students practice in technical universities while studying in specialties related to radio electronic engineering in courses connected with study of the design principles of antenna systems with an equidistant arrangement of elements. Publication could be recommended as methodical manual to students for homework solving or laboratory work using specialized MathCad software.
Improving the methodology of teaching the discipline «Engineering graphics»
Authors:   BMSTU, Moscow, Tropin S.L. , Surkova N.G. ,   BMSTU, Moscow, Yurenkova L.R. ,   BMSTU, Moscow
Published: January 2023

The article presents an innovative methodology for teaching the discipline «Engineering Graphics», aimed at increasing the level of preparedness of students of engineering specialties to perform drawings of parts of complex geometric shapes. Students experience the greatest difficulties when applying dimensions due to the fact that they do not have sufficient knowledge of the production technology of practical experience. The novelty of the technique lies in the application of some provisions of the section of geometry called «Graph Theory». Training maps have been developed that contain algorithms of actions for the stage of applying dimensions to drawings. Particular attention of students is drawn to the knowledge gained in the study of the section of descriptive geometry «Surfaces». As the experience of introducing the new methodology has shown, thanks to the algorithms that organize the sequence of actions of students when applying dimensions to drawings, it is possible not only to help students overcome difficulties in completing an educational task. In addition, since the «Graph Theory» has some elements of the game, it is possible to captivate students with the task. It would not be superfluous to quote the words of the French writer Anatole France (1844-1924): «Only by having fun, they learn.»
On general fixed point method based on matrix splitting for solving linear complementarity problem
Authors: Kumar Bharat , Deepmala  , Das Arup Kumar
Published: January 2023

In this article, we introduce a modified fixed point method to process the large and sparse linear complementarity problem (LCP) and formulate an equivalent fixed point equation for the LCP and show the equivalence. Also, we provide convergence conditions when the system matrix is a \(P\)-matrix and two sufficient convergence conditions when the system matrix is an \(H_+\)-matrix. To show the efficiency of our proposed method, we illustrate two numerical examples for different parameters.
CALCULATION OF INPUT PARAMETERTS FOR TOPOLOGY OPTIMISATION OF STEERING KNUCKLE
Authors: Grigorenko A. , Shopina E.
Published: January 2023

The paper describes the calculation of input parameters for static strength analysis or generative design of the steering knuckle of a Formula Student race car. The initial data were: overall and mounting dimensions of the rim and tire, hub and brake disk, the magnitude of the force acting on the contact patch of the wheel with the road, the magnitude of the sliding friction force between the brake disk and brake pads, the force acting on the tie rod attachment, the location coordinates ball joint mounts and brake caliper. During the calculations, bearings were selected and forces on the coordinate axes were calculated, which must be applied to the part to simulate work loads. The calculation was performed by static methods. As a result, six load cases were obtained, simulating work in right and left turns with oversteer and understeer, as well as work during braking with maximum negative acceleration. Also, a 3D model of the steering knuckle was built, which has excessive strength (factor of safety is higher than 6). Padding values of the unchangeable areas have been defined, that prevent the generative design algorithm from subtracting material from important structural features of the part. The offset values were verified using additional finite element calculations.
DETERMINATION OF HEAT GAIN FROM A PERSON, TAKING INTO ACCOUNT ENERGY CONSUMPTION AND PHYSICAL ACTIVITY
Authors: Lobanov D. , Zvenigorodskiy I. , Svirin M. , Safonov S. , Seminenko A.
Published: January 2023

The analysis of the current regulatory documents and reference and methodological literature used in carrying out calculations related to the determination of heat emissions from people engaged in various types of work is carried out. The incomplete correspondence of the values of heat emissions to the characteristics of the severity of the work performed for various types of activities, taking into account the age of people with their physique corresponding to normal body weight, was revealed. The calculated values of the coefficient of physical activity for a conditional person, as well as the values of heat emissions of men with their division by age categories, are determined. The graphs of energy expenditure for men of different ages performing the following types of work are presented: light (Ia, Ib), moderate (IIa, IIb), heavy. The obtained values of energy consumption are compared with the data of regulatory documents and reference literature for various categories of work. The relevance and necessity of taking into account data on heat emissions from people, taking into account their age, anthropometric parameters and other conditions when designing microclimate systems, including personal and adaptive ventilation systems, is shown. The results of the study will be useful to design engineers implementing circuit solutions of microclimate systems that provide comfortable parameters of the air environment in rooms for various purposes.
COMPREHENSIVE ASSESSMENT OF 3D-BUILD PRINTER COMPETITIVENESS
Authors: Slavcheva G. , Akulova I. , Yurov P.
Published: January 2023

This article proposes a method for assessing the competitiveness of building 3D printers based on a comparison of their technical and technological characteristics and economic parameters. The methodology implements an integrated approach that takes into account a large number of comparison parameters of a different nature based on the use of relative indicators. The calculation takes into account the design characteristics of printers, the characteristics of the manufacturability of the printing process, the characteristics of printed building objects and the economic parameters of printers. So, for low-rise construction, the essential parameters are: printing speed, the ratio of the print area and the overall dimensions of the printer, the ability to work with low-flow mixtures and with various building mixtures without readjustment, reducing the defectiveness of the printed layer and energy consumption. The most competitive is the printer that provides more units of useful effect, determined by a set of technical and technological characteristics, per unit of costs associated with the purchase of a printer, its energy consumption, the laboriousness of maintenance and installation and dismantling at a construction site. As a result of assessing the competitiveness of various types of printers, it was revealed that the leader for low-rise construction is the portal printer BOD2 2-2-2 of the Danish company COBOD BOD2. For printing building products and structures in a production environment, the FIXED robotic arm from the Netherlands has a competitive advantage. CyBe Construction. The considered approach to assessing the competitiveness of building 3D printers is of practical interest to their manufacturers. The new knowledge about the significance of the design solutions of 3D printers, obtained as a result of the implementation of the proposed methodology, creates strategic guidelines for domestic manufacturers.
OBTAINING MIXED COMPOSITE CEMENTS BASED ON FERRITE CLINKER
Authors: Grebenyuk A. , Smal D. , Davidyuk A. , Ponomareva P.
Published: January 2023

The possibility of using ferritic clinker as a component of binders with special performance properties is considered. Such types of cements can solve the problems of providing the construction industry with high-strength, resistant to external aggressive effects and relatively cheap binders. However, the mechanism of hardening and curing of cement stone obtained by using ferritic clinkers is complicated and depends on a number of parameters. It was found that the greatest thermal effect (more than 70%) during the hydration of the resulting ferritic clinker with the introduction of various additives (lime and gypsum stone) is achieved up to 4 hours from the moment the binder compositions are mixed by means of a calorimetric analysis carried out during the hydration of the developed special binder compositions. That corresponds to the course of the induction period of hydration of the used Portland cement, at the time of the occurrence of primary contacts between crystalline hydrates and sufficient mobility of the cement mass. In this time interval, the strength of the cement stone is not high enough and the produced iron-containing hydration products are able to fill the space of the cement matrix, making it more dense and less defective. The formation of iron-containing crystalline hydrates from ferritic clinker can proceed in several stages: hydrolysis of dicalcium ferrite at the initial stage of the reaction and further interaction of its products with portlandite in the period from 7 to 14 days from the moment of mixing the binder compositions. The main crystalline hydrates formed from ferritic clinker are iron-bearing ettringite and hydrogarnet. The study of the physical and mechanical characteristics of cement stone showed that the optimal content of ferritic clinker in the composition of the binder compositions is 5%. With a given quantity, the strength of the cement stone in compression and bending exceeds that of the control sample by 11.5%. The input of 15 and 30% ferritic clinkers into the composition of special binders reduces the strength characteristics by 15-20%.
FILOSOFI PENYELESAIAN PERKARA PERCOBAAN PEMBUNUHAN MELALUI KEARIFAN LOKAL PADA MASYARAKAT INDONESIA
Authors: Rusdiana Emmilia
Published: January 2023

ABSTRAK Hukum yang hidup di masyarakat telah menyelesaikan tindak pidana yang terjadi di masyarakat. Dalam Pasal 338 KUHP mengenai tindak pidana pembunuhan, dengan ancaman pidana  berupa pidana mati. Masyarakat Indonesia sebagai local wisdom telah menyelesaikan tindak  pidana percobaan pembunuhan dengan kesepakatan para pihak. Tujuan penulisan ini adalah mengidentifikasi dasar filosofis kebijakan lokal dalam percobaan  tindak pidana  pembunuhan pada masyarakat di Indonesia.  Metode penulisan adalah normatif dengan pengumpulan bahan hukum secara studi Pustaka dengan pendekatan perundang-undangan dan konsep serta dianalisis secara kualitatif., Hasil pembahasan bahwa Filosofi penanganan percobaan  pembunuhan pada Masyarakat di Indonesia  adalah berupa kesepakatan antara para pihak adalah bertentangan dengan konsep mala in se.   Sanksi tersebut adalah kesepakatan antara pertemuan antara pelaku, korban dan perwakilan masyarakat, hal ini sesuai dengan perkembangan di dalam masyarakat dan hubungan kekerabatan atau persamaan wilayah sangat dijunjung tinggi sebagai tahapan penyelesaian percobaan pembunuhan yang terjadi.ABSTRACTThe law that lives in the community has resolved the crime that occurred in the community. In Article 338 of the Criminal Code concerning the crime of murder, the threat of punishment is the death penalty. The Indonesian people as local wisdom have resolved the crime of attempted murder with the agreement of the parties. The purpose of this paper is to identify the philosophical basis of local policies in the attempted murder of people in Indonesia. The writing method is normative with the collection of legal materials in a library study with a statutory and conceptual approach and analyzed qualitatively. The results of the discussion that the philosophy of handling attempted murder in society in Indonesia is in the form of an agreement between the parties is contrary to the concept of mala in se. The sanction is an agreement between a meeting between perpetrators, victims, and community representatives, this is following developments in the community, and kinship relations or regional equality are highly respected as a stage of completion of the attempted murder that occurred
Studi Eksperimental Pengaruh Variasi Sudut Kemiringan Poros Terhadap Kinerja Turbin Ulir Archimedes
Authors: Pribadi Kukuh , Setiabudi Dedet Hermawan , Jalaali Bahrul
Published: January 2023

This study aims to design and conduct an experimental study of axle tilt angles variation on the performance of the Archimedes screw turbine (AST). The AST was constructed based on Rorres (2000) [3] formulation to achieve the optimum design of AST. This design was obtained with the followings parameters:  1.7m turbine axle length, 0.069m and 0.128m of internal and external turbine radius, 0.260m pitch length, 6.5 pitches number, 59° and 72° of external and internal blade angel, and 2 number of blades. The screw turbine performance was experimentally carried out by varying the angle of the turbine axle in the range of 25°, 30°, 35°, 40°, and 45°. The test was utilized the natural river flow with an average discharge of 0.011 m3/s. The result was yielded that the optimum angle of the turbine was at a turbine tilt axle of 35° while the rotational speed was 265.5 rpm, whereby the turbine generated  48.81W power and 4.09Nm of torque. This study is hopefully beneficial for the turbine design reference as well as its experimental evaluation.
Korelasi Kecerdasan Emosional dan Kecerdasan Adversitas dengan Hasil Belajar Biologi Siswa SMA Negeri 5 Soppeng Pada Masa Pandemi Covid-19
Authors: Alam NP Sri Ramadani , Nurhayati Nurhayati , Rachmawaty Rachmawaty , Nurlinda Nurlinda , Mignia Mignia , Sulfiana Sulfiana
Published: January 2023

Abstrak. Penelitian ini adalah penelitian expost-facto yang bertujuan untuk mengetahui hubungan antara kecerdasan emosional dan kecerdasan adversitas dengan hasil belajar siswa secara parsial dan simultan. Populasi penelitian ini adalah seluruh siswa kelas IPA SMA Negeri 5 Soppeng tahun pelajaran 2020/2021. Pengambilan sampel melalui teknik stratified random sampling sehingga diperoleh sampel 213 orang siswa. Variabel bebas dalam penelitian adalah kecerdasan emosional dan kecerdasan adversitas, sementara variabel terikatnya adalah hasil belajar. Teknik pengumpulan data menggunakan instrumen berupa soal hasil belajar dan angket. Teknik analisis data yaitu dengan analisis deskriptif dan inferensial. Berdasarkan hasil analisis data inferensial. Hasil penelitian menunjukkan bahwa terdapat hubungan yang kuat antara kecerdasan emosional dan kecerdasan adversitas dengan hasil belajar Biologi siswa.Kata Kunci: Kecerdasan emosional, kecerdasan adversitas, hasil belajar
Designing 3D Animated Games as Learning Media For Lontara (Edulontara) Based on Android
Authors: Rachman Suci Rahma Dani , Ardimansyah  , Baso Arfan Efendy  , Riyan Alfian Syarif
Published: January 2023

At this time it is known that many children, especially students, have played games, both through computers and mobile phones. Students think that games can fill their spare time. The use of media that involves technology can affect student achievement and motivation, one of which is game play. The background of the research is that learning in schools still uses learning methods that use guidebook media, which causes a lack of interest and attention from students to take part in ongoing learning, for that it is necessary to develop an educational game that can be used as a medium of learning and can motivate students to be interested in study. The purpose of making 3D animation game applications for learning lontara script is so that students can easily understand and be interested in learning lontara script. The system development method used is waterfall starting from data collection, system analysis, application design, system testing and implementation. Black-box testing method that focuses on the functional requirements of the software. The programming language used is the Visual C programming language. With the application of the 3D animation game for learning the Lontara script, it is hoped that it can provide information and help students understand and be interested in learning the Lontara script.
Analysis Of Themes and Trends in Life Sciences and Biomedical Research Virtual Reality
Authors: Sahibu Supriadi , Munsyir Mulawarman , Gani Hamdan , Taufik Imran , Iskandar Akbar
Published: January 2023

The purpose of this study was to investigate the theme of the abstract, the theme of the Title on Virtual Reality in the Sciences and Biomedical Sciences and to investigate the trends of authors and countries who are major contributors to research on virtual reality in the sciences and biomedical sciences, the researchers used metadata from 497 journals. scientifically indexed with topic modeling algorithms. The results of the study found that for virtual reality themes listed in the abstracts of science and biomedical fields, the words that often appear were study and systems related to pediatric surgery, stroke and cancer. Then the research theme in the virtual reality title regarding science and biomedicine is to get words that often appear, namely evaluation and videos that contain about the fields of dental health, stroke and cancer, Furthermore, from a technological point of view, it relates to head-mounted devices to display 2 or 3 dimensions, and educational psychometric technology relates to learning to care for children for students. While the sports side is related to the movement of the body's physical activity in adults. Analysis of research trends for authors and countries that are major contributors to virtual reality research on science and biomedical based on wordcloud analysis with names that often appear in virtual reality is Wiederhold BK and the dominant country is United State.
Actitudes, estilos de enseñanza y evaluación del aprendizaje
Authors: Quispe-Ayala Cesar , Antezana Régulo , Oré Rosario , Salvatierra-Zambrano Salvador
Published: January 2023

El libro es una adaptación de una investigación presentada a la Universidad Nacional Enrique Guzmán y Valle, que buscó estudiar la relación entre los estilos de enseñanza y las actitudes hacia la evaluación de los aprendizajes en Docentes de Educación Primaria de la UGEL 07 Santiago de Surco (Perú). Se aplicó una investigación descriptiva correlacional, se seleccionó una muestra de 132 docentes de educación primaria de instituciones educativas de la UGEL 07. A dicha muestra se les aplicó el cuestionario de Estilos de Enseñanza del Profesor, TSQT (Thinking Styles Questionnaire For Teacher), de Grigorenko y Sternberg (1992) y la escala de actitudes del profesorado hacia la evaluación de los aprendizajes de los alumnos, construida por Zaragoza (2003). El análisis estadístico de los datos obtenidos permite arribar a la siguiente conclusión: Existe una relación estadísticamente significativa entre los estilos de enseñanza y las actitudes hacia la evaluación de los aprendizajes en docentes de educación primaria de la UGEL 07 Santiago de Surco.
EFFECTIVENESS OF TEACHING AND LEARNING MORAL EDUCATION THROUGH WHATSAPP APPLICATION: A CASE STUDY AT SMK RAJA MUDA MUSA
Authors: Abd Rahim Nur Farah Hani , Salleh Sakinah
Published: January 2023

This study aims to identify the effectiveness of teaching and learning for the subject of Moral Education through the Whatsapp application as a learning approach based on educational technology. The main objective of this study is to identify the effectiveness of teaching and learning Moral Education through the Whatsapp application as the main approach in delivering information, identify the willingness of teachers to implement teaching and learning and explain the factors that influence teachers to choose the Whatsapp application in teaching and learning Moral Education. This qualitative study was conducted at SMK Raja Muda Musa, Selangor through an online interview method with four Moral Education teachers. Thematic analysis is used to obtain themes. The findings of this study found that the use of Whatsapp applications in the teaching and learning process of Moral Education teachers shows that the use of Whatsapp applications does not help Moral Education teachers achieve the teaching and learning objectives, but teachers show a willingness to use Whatsapp applications in online teaching. The selection factor of Whatsapp application is to help with internet network problems and socio-economic factors of students. The implications of this study provide exposure to teachers about the capabilities of educational technology through the Whatsapp application as an alternative low-cost information delivery to address the problem of poor student internet access and equal education rights.