bluuebunny/crossref_metadata_2025 huggingface dataset:
"INCREASING THE POSITIONING ACCURACY OF THE FEED KINEMATIC LINKAGES OF CNC MACHINE TOOLS THROUGH THE CALIBRATION METHOD "
Authors:   Vasile Alecsandri University of Bacau, Stoica Adrian , Stan Gheorghe ,   Vasile Alecsandri University of Bacau, Drob Catalin ,   Vasile Alecsandri University of Bacau
Published: June 2023

The accuracy of a CNC machine tool is one of the most important parameters that make the geometry and dimensions of the work pieces comply with the tolerance limits specified through the designer’s technical drawing. When a machine tool is handed over to the customer it is compliant in terms of the accuracy limits specified in the documentation but, after a time interval of usage, because of the wear of the components in relative motion and machine exploitation conditions. This work suggests an innovating method of testing the accuracy of a CNC machine tool by using the “calliper”, with a view to enhancing the positioning accuracy of the feed kinematic linkages. After designing and manufacturing this device, the measurement of the target points on the coordinate measuring machine is necessary, so that this device becomes a “calliper”. For inspecting the machine tool, the “calliper” is located on the machine table, being measured at the target points by means of the probe with the tactile shooter that belongs to the machine. The measurement results are stored and compared to the results of the measurements performed through the coordinate measuring machine. In function of the two measurements the related corrections of the errors will be done in the software of machine tool numerical control.
THE STUDY OF THE PHYSICO-MECHANICAL PROPERTIES OF FASHION TIGHTS COMPARED TO MEDICINAL TIGHTS
Authors:   Aurel Vlaicu  University of Arad, Szabo Monica , Dochia Mihaela ,   Aurel Vlaicu  University of Arad, Muller Valentin ,   Aurel Vlaicu  University of Arad, Jitaru Laurentiu ,   Aurel Vlaicu  University of Arad
Published: June 2023

The aim’s paper was to study some physico-mechanical properties for fashion tights and medicinal tights with compression degree 1 (ie 10-15 mm Hg), class 1, for the prevention of venous diseases of the legs. Tights made of PA (polyamide) and two-component yarns, polyamide, and elastane, with a fineness of 70 Den, were chosen for the study. For fashion tights, the yarn composition was 88% polyamide and 12% elastane, and for medicinal tights 85% polyamide and 15% elastane. The tights were made on circular knitting machines with small diameter, Merz, model CC4 II with a diameter of 4 ¾ inches, pitch 24 E, number of needles 360, for the average size, M (II) of the tights. Both types of women's tights were made in a jersey structure with weft yarns. The background yarns were 100% polyamide, and the weft yarns were elastomer yarns coated in two polyamide yarns to obtain a balanced yarn. Fashion tights are the common ones, and compressive tights are used to prevent incipient venous disorders of the legs, calming the sensation of pain or heavy legs. The experimental program included the study of hygroscopicity, the tensile strength in the direction of the wales, and the degree of compression at the ankle. The obtained data were analysed and presented comparatively.
"NUMERICAL SIMULATION OF ELASTIC-PLASTIC CONTACT WITH ISOTROPIC HARDENING "
Authors:   Stefan cel Mare University of Suceava, Cerlinca Delia , Spinu Sergiu ,   Stefan cel Mare University of Suceava
Published: June 2023

The contacts of mechanical components transmit loads that lead to subsurface stresses developing in the contacting bodies. In an efficient tribological design, these stresses are expected to remain under the yield strength of the softer contacting material. When this condition is not met, plastic flow occurs in the softer body. Under the assumption of isotropic hardening, the yield strength increases with the development of additional plastic strains. As plastic flow processes are dissipative and therefore path dependent, the elastic-plastic problem is unsolvable through analytical endeavours, but can be approached with a numerical algorithm capable of simulating the loading history. The Betti’s reciprocal theorem provides the theoretical framework for the application of superposition principle to elastic-plastic stresses and displacement. An algorithm consisting in three nested loops is assembled from the solutions of simpler problems: (1) the purely elastic rough contact problem, (2) the inclusion problem and (3) the problem of the plastic strain increment. The numerical simulations suggest that the residual stresses decrease the intensity of the total stresses, thus delaying additional plastic flow. With increasing load, the heart-shaped plastic strain volume advances toward the surface, enveloping a plastic core near the initial point of contact. Compared to the purely elastic case, the elastic-plastic pressure shows a flatter distribution, while the contact radius is increased.
VIRTUAL GEOMETRIC MODEL WITH DYNAMIC PARAMETERS FOR 6 DOF ARTICULATED ARM ROBOT
Authors:   POLITEHNICA University of Bucharest, Cristoiu Cozmin , Laurentiu Stan ,   POLITEHNICA University of Bucharest, Mario Ivan ,   POLITEHNICA University of Bucharest
Published: June 2023

To calculate joints angles of an articulated arm robot, when the coordinates of the point to be reached are known, different calculation methods or iterative algorithms for inverse kinematics (IK) can be used. IK requires that the dimensions of the robot segments and the initial positions of the joints to be known, described, and implemented mathematically, so it is based on the geometric model of the robot. In practice, the geometric modeling of the robots is done considering that all their structural elements are rigid, and their dimensions and positions are considered constant (while in reality the robots suffer certain deformations that can have different causes). This article considers the thermal deformations that a robot suffers during operation which are leading to positioning errors. The deformations are variable during the warm-up period of the robot and become constant after reaching the thermal stabilization level. From this point of view, if it is desired to consider and possibly compensate these thermal induced errors, the elaboration of the geometric model of the robot in the classical way is no longer possible and the geometric parameters must be somehow described as variables. Thermal deformations produce displacements and torsions of the robot elements. Linear and angular deviations may occur from the initial (theoretical) position in all 3 directions of the cartesian axis systems used in robot modeling. This paper presents a technique for creating a virtual model of the ABB IRB140 robot in CoppeliaSim, programming and modeling environment, with the positioning of the axis systems attached to the joints identical to the real position (unlike simplified versions of Denavit-Hartenberg geometric models) and the logic of a custom written software algorithm for automatic deformation of the model.
TRANSFORMING STRATEGY FROM INDUSTRIAL AUTOMATION TO ADVANCED LEAN AUTOMATION
Authors:   University POLITEHNICA of Bucharest, Ionel Danut - Sorin , Opran Constantin Gheorghe ,   University POLITEHNICA of Bucharest
Published: June 2023

Industrial automation refers to the control of machines and processes in order to manage variables. Automated manufacturing systems have evolved as advanced technologies have been incorporated, and theoretical approaches have evolved from mass production to intelligent manufacturing, each step introducing superior manufacturing concepts and models, which allowed increasing processes, organization and work. One of the newest approaches refers to distributive automation, in which the system allows reconfiguration and self-organization of autonomous subsystems in a distribute environment. By incorporating integrative Industry 4.0 technologies, an automated industrial system becomes an intelligent, fully digitized and reconfigurable manufacturing applications platform. At the same time, through digitization and virtualization, the automated manufacturing system can employ the Advanced Lean Manufacturing conceptual support. This paper addresses the transforming challenges of an existing automated manufacturing system to the Advanced Lean adaptive automated manufacturing level, taking into account the limits due to attributes, properties and capabilities of physical manufacturing assets. The proposed solution describes a versatile and dynamic architecture, which allows the organization / reorganization of manufacturing flows, scalability and connection with the external environment, according to advanced cyber manufacturing requests.
INFLUENCE OF HEAT GENERATED IN A ROLLING BEARING ON ITS MOTION RESISTANCE
Authors:   Silesian University of Technology, Kosmol Jan
Published: June 2023

The heat generated in a bearing may affect its resistance to motion. Therefore, the bearing seat designer should take this into account in the design process. The article presents the results of simulation tests which show how the heat in the bearing affects its resistance to motion. A methodology for determining the resistance to motion and power losses in the bearing has been proposed, which consists of two stages: identification of the temperature distribution in the bearing and identification of thermal deformation and contact loads. The main results of the research are the following statements: that the thermal deformation of the bearing elements is much greater than that due to mechanical loads (centrifugal forces or pre-load) and the contact loads, thus the motion resistance and power losses in the transient state may be much greater than in the state fixed. The conducted experimental studies show a relatively good qualitative agreement with the results of simulation tests, while the quantitative results do not always provide a sufficient agreement. The most important conclusion from the research is as follows: for high-speed assemblies, e.g. spindles of High Speed Cutting machine tools, the failure to take into account the motion resistance due to heat generated in the bearing may lead to a reduction in bearing life.
Management of Adult Unruptured Brain Arteriovenous Malformations: An Updated Network Meta-Analysis
Authors: Dmytriw Adam A. , Ku Jerry , Ghozy Sherief , Grewal Sahibjot , Cancelliere Nicole M. , Azzam Ahmed Y. , Regenhardt Robert W. , Rabinov James D. , Stapleton Christopher J. , Patel Krunal , Patel Aman B. , Pereira Vitor Mendes , Tymianski Michael
Published: June 2023

The management of unruptured brain arteriovenous malformations (ubAVMs) is a complex challenge to neurovascular practitioners. This meta-analysis aimed to identify the optimal management of ubAVMs comparing conservative management, embolization, radiosurgery, microsurgical resection, and multimodality. The search strategy was developed a priori according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We searched the Ovid Medline, Embase, Web of Science, and Cochrane Library databases to identify relevant papers. Using R version 4.1.1., a frequentist network meta-analysis was conducted to compare different management modalities for the ubAVMs. Overall, the conservative group had the lowest risk of rupture (P-score=0.77), and the lowest rate of complications was found in the conservative group (P-score=1). Among different interventions, the multimodality group had the highest rupture risk (P-score=0.34), the lowest overall complications (P-score=0.75), the best functional improvement (P-score=0.65), and the lowest overall mortality (P-score=0.8). However, multimodality treatment showed a significantly higher risk of rupture (odds ratio [OR]=2.13; 95% confidence interval [95% CI]=1.18–3.86) and overall complication rate (OR=5.56; 95% CI=3.37–9.15) compared to conservative management; nevertheless, there were no significant differences in overall mortality or functional independence when considered independently. Conservative management is associated with the lowest rupture risk and complication rate overall. A multimodal approach is the best option when considering mortality rates and functional improvement in the context of existing morbidity/symptoms. Microsurgery, embolization, and radiosurgery alone are similar to the natural history in terms of functional improvement and mortality, but have higher complication rates.
Synthesis and cholinesterase inhibitory potential of 2-phenoxy-N-substituted-acetamide derivatives
Authors: HARATİ Kiana , KİAEİ Seyedeh Mahta , MAHDİPOUR AMJAD Tina , NOBAVAR Zahra , SHUKUR Karar , MAVİDENİZ Açelya , ERCETİN Tugba , GÜLCAN Hayrettin Ozan
Published: June 2023

The research studies worldwide on the identification of novel molecules having the potential to inhibit cholinesterase enzymes generated many compounds with promising results for some of them. Since there are limited number of drugs used in the treatment of Alzheimer's Disease in particular, the research studies continue. Within the scope of this study, four 2-phenoxy-N-substituted-acetamide derivatives were synthesized and their structures were identified employing spectroscopic techniques. The title molecules were further evaluated for their cholinesterase inhibitory potential in modified Ellman’s method. The results displayed that the compounds have moderate activity and the simple scaffold employed might be used in future studies for more promising compounds.
Formulation development and evaluation of controlled release matrix tablets of glibenclamide
Authors: PALATTY Biji , RAJ Praveen , PA Daiay , JOHNS .G Boby
Published: June 2023

The present study aimed to formulate and evaluate the controlled-release matrix tablets of Glibenclamide which is an antidiabetic drug that belongs to the second-generation oral hypoglycemics. Matrix tablets were prepared by three different polymers as sustained-release agents, using Glibenclamide as a model drug. Three polymers were selected for this study- HPMC K 15, HPMC K 100, and EC in different drug: polymer ratios. The drug was identified by FTIR spectroscopic method. The pre-compression and post-compression parameters of all formulations were found to be within acceptable limits. The release rate of Glibenclamide from matrix tablets was studied using the USP Dissolution Testing Apparatus type-I (Basket method). The formulation F6 which contained EC 50mg showed a maximum release of 99.28% in 24 hrs and revealed that EC was more effective in sustaining the drug release therefore formulation F6 was selected as the optimized formulation. The in-vitro release data of optimized formulation was fit into various kinetic models, among the different model's data of in-vitro release of best fit into Zero order kinetic model. The formulation best fit the Higuchi model and showed that drug release from the prepared matrix tablets occurs via a diffusion process.
Calculation of rainfall thresholds for debris flow prediction
Authors: Santiago Torres Elizabeth Milagros
Published: June 2023

Due to the fact that debris flow movements, commonly known as "huaycos," represent a potential threat worldwide, especially in Peru, it is necessary to analyze and study this hazard, as well as the ability to forecast these movements. Therefore, the objective of this research was to determine the precipitation thresholds that trigger debris flow movements in the Rosayoc/Batán ravine, in order to contribute to Disaster Risk Management (DRM). As a means of processing spatial data, this study used an approach that combines Geographic Information Systems (GIS), remote sensing, and satellite image analysis. Additionally, through the hierarchical analysis process, the most susceptible areas to debris flow in the Rosayoc/Batán ravine were evaluated and determined. In conclusion, the True Skill Statistic (TSS) of the thresholds was calculated through calibration and validation. This indicates that the model's ability to predict future outcomes was evaluated. Additionally, through the analysis and evaluation of hazard levels for debris flow movements using the hierarchical analysis process (CENEPRED 2014), it was established that the lower part has very high and high levels of hazard, the middle part has high and medium levels, and the upper part has a high level of hazard. Furthermore, these levels have the highest predominance of area in each part of the ravine. Moreover, hazard maps were also created for debris flow movements triggered by the maximum 24-hour precipitation and the critical threshold of accumulated rainfall (LA1) over 18 days, based on the maximum depths and velocities generated by the debris flow.
Impact of Price and Promotion on The Consumer's Buying Behavior in The Metropolitan Region of Bandung
Authors: Supriadi Edi , Larashati Irena , Dwiyanisa Ashila , Jannah Annita , Herawati Octaviane
Published: June 2023

The present research endeavors to examine the impact of price and promotion on the consumer's buying behavior in the metropolitan region of Bandung. The study employs path analysis to establish that consumer choices are significantly influenced by both price and promotion. The study's sample comprises 81 customers, which accounts for 7% of the total transactions that occurred in 2019. The influence of price on consumer purchase decisions is positively correlated, whereas promotion has both a direct and indirect positive impact. The present findings are consistent with prior research, emphasizing the crucial significance of price and promotion in influencing consumer behavior. The findings have led to the formulation of suggestions for enterprises that are functioning in the region of Bandung. It is recommended to perform a thorough examination of diverse pricing benchmarks in order to evaluate competitiveness and the consumer's value proposition. It is advisable to allocate resources towards efficacious promotional strategies in order to augment consumer awareness and stimulate interest in products. The implementation of successful promotional strategies has the potential to exert a favorable impact on the purchasing behavior of consumers. Additional research could delve into alternative factors that may influence consumer decision-making, thereby augmenting comprehension of consumer behavior through the inclusion of supplementary variables. The research acknowledges a number of constraints. The study exclusively centers on the influence of price and promotion in relation to purchase behavior, disregarding other variables such as product excellence, brand image, and customer support. Subsequent studies may consider incorporating these variables to conduct a more thorough analysis. Notwithstanding the aforementioned constraints, this research offers significant perspectives for enterprises in Bandung to guide their pricing and promotional approaches.
National Characters: The Effect of Social Media on Youth in The Digital Era
Authors: Sundarsih Dedeh , Sudiarti Sri
Published: June 2023

This research aims to analyze social media's influence on forming Pancasila's character among adolescents in the digital era. The research utilizes a quantitative approach with a survey method and simple random sampling of 100 active social media users among teenagers in Tasikmalaya. The collected data is analyzed using linear regression. The research findings indicate a significant correlation between social media usage and forming of Pancasila characters among adolescents in the digital era. The more frequently teenagers use social media, the lower their Pancasila character tends to be.
Additionally, the type of social media users also has varying effects on forming Pancasila's character. Teenagers frequently use social media platforms focused on physical appearance and lifestyle and tend to have lower Pancasila characteristics. This research contributes to the development of theories regarding social media's influence on forming Pancasila's character among adolescents. The results can be a reference for parents and teachers in supervising teenagers' social media usage and cultivating a stronger Pancasila character.
Review on: Pharmacological Activity of Caterpilllar fungus (Keeda Jadi)
Authors: Bharti Bhavesh , Chaudhary Menuka , Rana Dr. Vinod , Ahmad Salman , Tamta Neha , Dabral Kriti , Uniyal Yashika
Published: June 2023

In this review we focus about the pharmacology, biological characteristics and therapeutic uses of Caterpillar fungus (Keeda jari) which is also known as keeda ghaas, Yarsa gamba. It is found at high Himalayan mountains of India, Nepal and Tibet. It is found between 350 and 5000 meters above sea level. It is an entomo-fungal combination of a larva of small moth, Hepialus armoricanus and a parasite fungus Cordyceps sinensis. Cordyceps is best known medicine for increasing physical stamina and sexual functions. It has been proven to improve liver, kidney, and lung functioning in addition to being routinely used to treat people with heart disease. Numerous investigations have shown that it possesses a wide range of biological functions and pharmacological potential despite not being harvested in a sustainable or deliberate manner.
Non-human Personas. Including Nature in the Participatory Design of Smart Cities
Authors: Tomitsch Martin , Fredericks Joel , Vo Dan , Frawley Jessica , Foth Marcus
Published: June 2023

For the past decades humans have been placed at the centre of designing information and communication technologies (ICT), leading to the rise in prominence of human-centred design. The field of smart cities has equally adopted notions of citizen participation as a way to ensure that technological solutions improve people’s livelihoods. However, these kinds of processes treat the urban environment as separate from nature, promoting human comfort and convenience over planetary health and wellbeing. Motivated by these growing concerns that highlight the urgency to reconsider how we define and practice participation in smart cities and in human-centred ICT solutions more broadly, this article assesses how the personas method can be adapted to include more-than-human perspectives in the design process. Based on a case study, which involved designing smart urban furniture for human and non-human use, we introduce a framework for developing and employing non-human personas. As a key element of the framework, we describe a middle-out approach for forming a coalition that can speak on behalf of the non-human species that are impacted by design decisions. We demonstrate how the framework can be used through its retrospective application on two research-led smart city projects. The article concludes with a discussion of key principles for creating and using non-human personas in design projects.
Potential directions for the use of various types of waste in Mongolia
Authors: Temuujin Jadambaa
Published: June 2023

No abstract
Adaptation of different generations of hereford and aberdeen angus breeds to the ambient temperature of the Northern region of Kazakhstan
Authors: Zhigerbaevich Kazhgaliyev Nurlybay , Dorjbat Yol , Eginbayevich Titanov Zhanat , Bolatbek Ateikhan
Published: June 2023

This article presents the findings of a study examining how Hereford and Aberdeen-Angus breeds are adapting to ambient temperatures in northern Kazakhstan. The study suggests that animals of second and third generations display the highest levels of adaptability to high temperatures in their environment, thus requiring less stress on their protective bodily functions. These groups also exhibit a more sophisticated system of thermoregulation, enabling them to efficiently allocate body resources in hot weather, a common occurrence during the summer months in the northern region of Kazakhstan. These findings contribute to a deeper understanding of the mechanisms involved in breed adaptation to environmental conditions and the findings could be valuable to farmers and breeders in the region seeking to optimize their animal production practices.
Aspects of Legal Protection by the State Against Victims of Child and Women Trade
Authors:   Student of the Master of Law Study Program, Faculty of Law, University of Jember, Badriyanti Putri Hilma , Romantika Betty ,   Student of the Master of Law Study Program, Faculty of Law, University of Jember, Kurniawan Muhammad Fatoni ,   Student of the Master of Law Study Program, Faculty of Law, University of Jember
Published: June 2023

Human Trafficking is a very complex problem and until now there is no proper solution to overcome it. This issue is very important because the majority of victims are underage girls who do not get their rights as a child. The purpose of trafficking in persons is for sexual exploitation, forced labor or other forms of exploitation. There is nothing honorable or fair about enslaving humans or trading them as objects of trade. The majority of the ways they get entangled are with the mode of debt bondage and fraud perpetrated by brokers. Not all girls experience the mechanism of trafficking in the same way. Of all the mechanisms that occur, at the stage of acceptance, sexual violence is experienced by many victims because girls under the age of 18 mostly work as female sex workers. International efforts to combat human trafficking include efforts to prevent human trafficking, rescue victims, and punish perpetrator. It is important to realize that people involved in human trafficking come not only from developing countries but also from developed countries and victims can come from all walks of life and gender. It is important to understand our role as individuals in preventing human trafficking by watching for any signs of suspicion and reporting suspicious activity to the regulatory authorities. We can also support the efforts of organizations and institutions fighting to combat trafficking in persons and assist those affected.
Mother Goddess Worship and its Influence on the Spiritual and Cultural Life in Vietnam Today
Authors:   University of Finance and Accountancy, Viet Nam, Tuyet MA. Le Thi Anh ,   University of Finance and Accountancy, Viet Nam
Published: June 2023

The belief in Mother Goddess worship (also known as Goddess worship) is a cultural and spiritual product of Vietnamese people in relation to nature and society. This is a typical form of belief and plays an increasingly important role in the cultural and spiritual life of Vietnamese residents, especially in the Red River Delta. Within the scope of the article, the author focuses on analyzing the content of Mother Goddess worship and its influence on cultural and spiritual life in various aspects; from there, some solutions are proposed to promote the positive effects and limit the shortcomings that the Mother Goddess religion brings.
Revolucionarji, zavezniki in sopotniki
Authors: Grdina Igor
Published: June 2023

Revolutions, which were usually spontaneous until the mid-nineteenth century, later became carefully planned. Louis Napoleon's coup served as an important example for this. Revolutionaries began focusing mostly on the technique of seizure of power; this included a considerable share of companions and allies. Revolutions usually became connected with the social catastrophe mostly brought by war between countries. Such a paradigm of revolution became a model within the communist movement in the first half of the 20th century.
Tabuji padajo - učimo se dialoga : LTI - Lingua Tertii Imperii in LIT - Lingua Imperii Titi
Authors: Dežman Jože
Published: June 2023

LIT—Lingua Imperii Titi is the deformed language of Titoism. With it, the communist minority tried to control the majority. In this article, it is emphasized on the examples of mass killing sites and graves that the Titoist elite is trying to conceal the crimes of Titoism, which is why most casualties of the Second World War and the revolution became taboo. LIT has falsely presented communists to be national heroes as the only heroes from the Partisan movement. LIT claims and emphasizes that a majority of the population followed Titoism. However, more than half of the casualties of the Second World War and the revolution became taboo, and Titoism repressed more than half of the population. Those who contributed to the fall of Titoism with non-violent resistance remained forgotten. The resistance of the threatened farmers in the village of Srednja vas in Bohinj is described as an example of the resistance of farmers.
Vzroki za izseljevanje s Primorskega v Italijo po drugi svetovni vojni
Authors: Strajnar Neža
Published: June 2023

The article focuses on the question of how many residents of the Primorska region decided to move abroad after the communist system was established in Yugoslavia and the new Yugoslav-Italian border was drawn. It was found that a portion of the population must have undergone such pressures that many individuals or even entire families decided for the dangerous and illegal journey across the border where they faced an uncertain future. Furthermore, motives for departure of those who decided to leave their hometown with the government's permission are presented (the so-called optants).
Prelom s starim in ustvarjanje nove elite
Authors: Petelin David
Published: June 2023

The transformation of the economic and political system during or after the war is the biggest milestone in Slovenian contemporary history. The social and demographic structure changed. A new, revolutionary class seized power in the state. Trials were being organised by authorities across Yugoslavia as well as in Slovenia. The absolute victory of the Party in domestic politics, confrontation with the bourgeoisie, and social change brought transformation in the part of the Ljubljana social scheme that belonged to the highest class—the so-called elite. The bourgeoisie and its values were unwanted, set aside, and eventually eliminated. After the war, many members of the bourgeoisie were killed or imprisoned, many emigrated, others were disowned while some joined the Party and thus (sometimes unintentionally) betrayed the bourgeois tradition.
Rice Price Differentials in Rural Markets of Edo State, Nigeria
Authors:   University of Benin, Nigeria, Ojogho O. , Izekor O. B.
Published: June 2023

The dispersion in price of rice across different markets in exclusive location, and the astronomic annual increase of 30% in the past 7-8 years in Edo state cannot be attributed mainly to transport costs. Consequently, the study examined spatial price variation of rice vis-à-vis beans, garri, and palm oil as typically consumed substitutes/complements food commodities from a segment of 286 food commodity marketers in Ovia North-East Local Government Area (LGA) of Edo state, Nigeria using the spatial lag model of price-cost of transport data set. The outcomes of the descriptive data showed that the price of 1Kg rice under random test became N1576.82. The consequences of Moran's I (3.652) and Lagrange multiplier exams (10.753) for spatial lag, and Moran's I (0.175) and Geary's c check (0.460) for spatial autocorrelation suggest evidence of clustering in the spatial price of rice at the nearby markets and spatial price of rice between markets than might be under a random experiment. However, the results confirmed no spatial structure, no spatial dependence in the error term, nor spatial dependence within the costs of garri, beans and palm oil. The effects of the spatial lag model showed a mean price of 1kg of rice as N1597.77 with an average total effect of 0.406 comprising 0.274 direct effect and 0.132 indirect effects. Hence, the own-market price of rice in the study area is affected by the across-market price in the nearby markets, in addition to the cost of transportation from market of purchase.
Innovation in micro and small businesses: how inbound open innovation and dynamic capabilities work together to explain innovation performance
Authors: Sesabo Yohana Jacob , Kato Mushumbusi Paul , Emmanuel Chao James
Published: June 2023

Purpose: This study examined how inbound open innovation and dynamic capabilities (sensing, seizing, and transforming capacity) work together to explain innovation performance. Methodology: The study used a case research method that involved interviewing ten purposively selected managers of micro and small furniture industries in Arusha, Dar es Salaam and Mbeya cities of Tanzania. Subsequently, the study used illustrative and content analysis methods to compare and align predetermined theoretical relationships on how dynamic capabilities and inbound open innovation explain innovation performance to empirical results.Originality: The use of illustrative analysis to compare extant theoretical relationships between dynamic capabilities, inbound open innovation, and innovation performance to case studies’ processes in this study is novel to the open innovation literature. Also, the resultant conceptual framework and relationships linking inbound open innovation to innovation performance through systematic processes of dynamic capabilities are novel.Main results: This study showed that inbound open innovation explains innovation performance through systematic complementary processes of dynamic capabilities. Moreover, the study showed that if inbound open innovation generates complex external ideas, micro and small firms adopt coupled open innovation as a predecessor of dynamic capabilities to unlock complexity.Theoretical contributions: This study has integrated the theories of open innovation and dynamic capabilities by developing a conceptual framework and relationships that show how inbound open innovation explains innovation performance through dynamic capabilities.Practical contributions: This study has revealed alternative combinations of dynamic capabilities that business managers need to benefit innovation performance from inbound open innovation.
Empreende(Dor)? Investigação sobre a relação entre a personalidade e a satisfação com e o sofrimento psicológico de empreendedores brasileiros durante a pandemia da Covid-19
Authors: De Sousa Marina Mendonça , Corradi Matheus Henrique Caldeira , Martins Pedro Saulo Rocha , Teodoro Maycoln Leoni Martins , Ribeiro Pricila Cristina Correa , Mansur-Alves Marcela
Published: June 2023

Objective of the study: the main objective of the present study was to investigate the relationship between personality traits, life satisfaction, the perceived impact of the pandemic and the psychological suffering of Brazilian entrepreneurs.Methodology: 631 respondents (51% female) with a mean age of 39.34 years (SD = 10.75), from different Brazilian states. Entrepreneurs answered an online collection form that assessed their personality, psychological distress, life satisfaction, and questions about the perception of the pandemic.Originality/relevance: studies on the mental health of entrepreneurs are scarce, even in crisis situations, such as the covid-19 pandemic. This study sought to fill part of this gap.Main results: Structural equation modeling shows that personality traits and life satisfaction are directly associated with the psychological distress of entrepreneurs. The relationship between neuroticism, extraversion and conscientiousness and psychological distress was partially mediated by life satisfaction.Theoretical/methodological contributions: this study contributes to the identification of individual and social variables and the way they are associated in the prediction of psychological suffering, in major health crises, such as covid-19.Social /management contributions: the results of this study can be used by managers, entities, and support services for entrepreneurs in order to build policies and actions aimed at coping with medium and long-term emotional consequences, uncertainties and setbacks resulting from the pandemic. of covid-19 for the entrepreneur and his business.
Secular trends in physical fitness and performance of university track and field athletes
Authors: Matsumoto Yukiya , Kohmura Yoshimitsu , Nakamura Akira , Takanashi Yuta , Aoki Kazuhiro
Published: June 2023

There are only few records of physical fitness data for athletes. This study aimed to explore the secular trends in physical fitness data of student athletes and the relationship of fitness parameters with the results of intercollegiate sports competitions. We used the physical fitness data of male students belonging to the Juntendo University Athletics Club from 1999 to 2019. The analysed parameters were height, weight, chest circumference, skinfold thickness, grip strength, vertical jump, sidestep, and sit and reach test. The ekiden results were examined in relation to data on medium- and long-distance activities with reference to the ranking. The study results suggested no difference in the skinfold thickness of the upper extremity across the events, except for throwing events. Grip strength declined gradually in sprints, hurdles, and jumping events, while it was high in throwing events. Vertical jump records declined over time in all events and remained at low levels in middle- and long-distance events. Sidestep improved among males in the general population, while it remained the same among all athletes. A relationship was found between grip strength and vertical jump, which are indices of muscle strength and power, and competitive results obtained in middle- and long-distance races.
Detecção e quantificação automatizadas de trincas em pavimentos de rodovias
Authors: Junior Jorge Destri , Borges Nicolas Pereira , Junior Nataniel Pereira Borges , Cunha Strauss Carvalho , Valente Amir Mattar
Published: June 2023

Um dos defeitos mais comuns no pavimento das rodovias são as trincas. Sua presença é um grande indicador de necessidade de ações de restauração. Atualmente, o DNIT utiliza vídeos-registros e processamento manual e automatizado para detectar a condição do pavimento e de outros elementos das rodovias. Porém, localizar e quantificar a presença de trincas ainda é um processo manual, que é lento, custoso e tendencioso. Nesse contexto, este trabalho propõe um método automatizado para detectar trincas e estimar o seu percentual, por quilômetro, em vídeos-registros, com o auxílio de técnicas de processamento de imagem e de aprendizado de máquina. Foram combinadas duas abordagens, uma que visa descartar regiões cuja probabilidade de ter trincas é baixa, e outra que se certifica de que as demais regiões têm trincas ou não. O modelo proposto foi validado em um conjunto de 138.909 imagens, obtendo-se acurácia de 0,90, sensibilidade de 0,89 e precisão de 0,75.
Indicadores de sustentabilidade empresarial e práticas de governança corporativa: proposta de avaliação para pequenas e médias empresas
Authors: Scheuermann Guilherme , Cyrne Carlos
Published: June 2023

Gerar resultados financeiros por intermédio da transformação dos fatores de produção em bens e serviços é um dos principais objetivos de qualquer empreendimento. As empresas responsáveis pela extração e transformação dos recursos naturais passaram a ter seu papel questionado pela sociedade. Logo, tornou-se importante a criação de indicadores que permitam o acompanhamento e avaliação das organizações em relação à sustentabilidade. Tendo em vista que a maioria dos existentes na atualidade avaliam empresas de grande porte, o objetivo do presente estudo consiste em realizar um comparativo entre as dimensões, critérios, temas e subtemas descritos no ISE da BM&FBovespa, nos Indicadores Ethos de RSE e no Guia de Sustentabilidade da Revista Exame, para identificar quais devem nortear a escolha de indicadores a serem utilizados em pequenas e médias empresas para a avaliar a sustentabilidade e atender aos princípios básicos de Governança Corporativa. A pesquisa, exploratória no primeiro momento, serviu para ampliar o conhecimento dos pesquisadores sobre o tema. A análise qualitativa dos indicadores que compõem os instrumentos de avalição, permitiu identificar pontos convergentes e divergentes. A partir da análise dos indicadores e da observância dos princípios de governança corporativa fez-se a proposição de dimensões e temas a serem avaliados para aferir o grau de sustentabilidade das empresas objeto deste estudo.
O nível de endividamento e os determinantes da estrutura de capital das empresas de e-commerce listadas no ranking 2021 da sociedade brasileira de varejo e consumo (SBVC)
Authors: Maniçoba Laila Mirelle Diógenes , Moura Tádila Larissa Gomes , Da Silva Liandra Chirley Medeiros , Nobre Fábio Chaves
Published: June 2023

No campo das finanças, as pesquisas acerca da estrutura de capital das empresas são tidas como dentre as de maior relevância. As empresas de e-commerce vêm ganhando espaço e influenciando os gestores das empresas, que motivados pelo fenômeno da globalização mundial, precisam adotar novas estratégias para superar a concorrência. Este estudo se propõe a conhecer o nível de endividamento e quais os fatores determinantes da estrutura de capital de 8 das maiores empresas do varejo brasileiro, listadas na edição de 2021 do Ranking divulgado pela Sociedade Brasileira de Varejo e Consumo (SBVC). Trata-se, portanto, de uma pesquisa de natureza quantitativa, cujos dados da amostra foram obtidos a partir dos balanços patrimoniais compilados e disponibilizados no banco de dados Economática®. Para o teste das hipóteses, foi utilizada a técnica de Regressão Linear Múltipla, sendo as variáveis selecionadas por meio do método backward. Os resultados encontrados revelam que a variável rentabilidade não é um fator determinante para o endividamento de curto prazo das empresas. Para o endividamento de longo prazo, o fator crescimento não se mostrou importante para a estrutura de capital. Por outro lado, em se tratando do endividamento geral, a variável tamanho se apresenta como determinante quando se trata de endividamento geral pelo ativo total, enquanto a variável rentabilidade afeta diretamente o endividamento total sobre o patrimônio líquido.
Inovação em pesquisas sobre agronegócio no setor de alimentos: revisão e agenda de pesquisa
Authors: De Almeida Giovana Goretti Feijó , Roesler Douglas André , Nicácio José Angelo
Published: June 2023

Embora a temática do agronegócio seja crescente, seu pico de publicações ocorreu somente em 2013, extrapolando a área rural e expondo sua natureza interdisciplinar. O agronegócio brasileiro tem se tornado cada vez mais competitivo. O objetivo é analisar o caráter inovativo das pesquisas publicadas sobre a temática agronegócio no setor de alimentos durante o ano de 2022, pós-pandemia Covid-19, na relação com o desenvolvimento territorial-regional.  Adotou-se a revisão sistemática da literatura combinada com a revisão integrativa para uma abordagem crítica sobre a temática, na base de dados Scopus, no período de 2022. Os resultados foram que, embora a temática sobre agronegócio no setor de alimentos seja ampla, encontrou-se uma discussão interdisciplinar sobre a temática, envolvendo: sustentabilidade, novo cenário pós-pandemia Covid-19 e desenvolvimento territorial-regional. A conclusão confirma que há inovação nas pesquisas publicadas sobre a temática agronegócio no setor de alimentos durante o ano de 2022, pós-pandemia Covid-19, na relação com o desenvolvimento territorial-regional.
Students' Learning and Gaming Preferences and their Expectations of Gamification
Authors: Morone Pinto Flavia , Jaftha Nevena , Borg Suzanne , Zahra Micallef Marouska , Chircop Tatjana
Published: June 2023

Gamification is a relatively new concept that uses game elements in a non-game context. The use of gamification in education appears to increase students' cognitive load and performance levels. The objectives of this research were to identify a students profile, their gaming and learning preferences, and to explore students expectations of gamification in education. A descriptive study was opted for, and an online questionnaire was carried out with level 1-6, full-time, MCAST students. The survey included 271 students, with an average age of 204 years old, most of whom were Maltese (81.9%; 2, p= .000). The majority of students think that the lectures can be turned into a fun game (63.8%; 2, p= .000) and they like that idea (71.6%; 2, p= .000). The favourite type of games for the male participants in this study were first-person shooters, while for the female participants, it was intelligence and quiz/trivia games 2 (8, N = 271) = .69.764, p = .000. Students reported that they might feel more involved in a lecture that makes use of game elements (34.3%; 2, p= .000), and if a specific task is gamified, they would probably feel more competitive and eager to complete it (43.9%; 2, p= .000). When asked which specific game delivery platform has the potential to improve their studies the most, the largest share of students responded with web-based learning platforms (44.3%; 2, p= .000). In conclusion, understanding the students profile allows for more personalisation of teaching activities. Activities can be customised based on students learning preferences, with learning instruction guided by the students expectations of what it would be like to make classes game-like, i.e., gamification.
Peer Teaching in Vocational Education: A Qualitative Analysis of Student Perceptions of Learning by Teaching
Authors: Ghio Stephanie
Published: June 2023

Peer teaching is a learning strategy based on student involvement, whereby students themselves teach fellow students. If properly structured, peer teaching can be a very effective learning technique (Leung et al. 2012).Peer learning, group work, and other activities that foster peer learning are highly encouraged at the Malta College for Arts, Science and Technology (MCAST). These activities should be structured not only to fulfil the learning outcomes but also to present learners with an opportunity to learn skills and competences that go beyond such outcomes (MCAST 2020). Peer teaching, as a style of learning is most often relatively novel to the students and thus it is of interest to explore the experiences and attitudes of MCAST students with regard to peer teaching.This qualitative study explores the perceptions of the students when participating in a peer teaching session. In doing so, this research attempts to answer the overarching question of whether the phenomenon of learning by teaching is an effective learning strategy within vocational education.The research method adopts a constructivist approach as described by Charmaz (2014) and employs a grounded theory methodology that utilizes a conditional matrix as demonstrated by Corbin and Strauss (2015). The methodology made use of interpretative and qualitative in-depth interviews from which the researcher could derive a theory of a process that is grounded in the views of participants (Creswell and Creswell 2018).A conceptual grounded theory model represents the concepts identified in this research study. A number of factors influence the way in which students engage in peer teaching activities. These include the students background and experiences, their attitude towards learning, familiarity with the subject, lecturer preparation, the learning environment and available resources. Students respond to these contextual conditions through a number of actions and reactions, namely by acquiring information through in-depth research, teamwork, presentation of their work to their peers, as well as giving and receiving constructive feedback, while the lecturer acts as a facilitator for learning. As a result, students experience a number of consequences and outcomes which are mainly related to autonomous learning, a deeper learning and improved self-efficacy.These outcomes present an argument in favour of the implementation of peer teaching as an effective tool in education. Student engagement, collaboration and openness to learning from their peers are key to the success of this method and by incorporating peer teaching into pedagogical practices, lecturers can guide students towards achieving their learning goals while enabling them to acquire skills that facilitate communication with their peers and improve self-efficacy.