1. Family businesses’ succession in posttransition countries : what can be learned from the action research?Mojca Duh, Andreja Primec, 2022, original scientific article Abstract: Succession is a very complex process and a critical phase in the life cycle of a family business. Finding a successor in ownership and management is one of the most demanding succession challenges, especially since younger generations have little interest or intention in joining their parents’ businesses. The action research was conducted to expand our understanding of owners’ attitudes and behaviors toward succession and the factors influencing successors’ intention and decision to enter the family business. The research also addresses the applicability of informal and formal family governance mechanisms in family business succession in post-transition countries. The research findings show the importance of the family dimension and emotional aspects of succession in post-transition countries. The theoretical hypotheses developed to form the basis for future confirmatory research and have implications for the key stakeholders and support infrastructure institutions involved in family business succession in post-transition countries.
Keywords: family business, succession, affective commitment, family governance mechanism, post-transition country, action research
Published in DKUM: 16.07.2024; Views: 147; Downloads: 9
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2. Probiotic mechanisms affecting glucose homeostasis : a scoping reviewMaša Pintarič, Tomaž Langerholc, 2022, review article Abstract: The maintenance of a healthy status depends on the coexistence between the host organism and the microbiota. Early studies have already focused on the nutritional properties of probiotics, which may also contribute to the structural changes in the gut microbiota, thereby affecting host metabolism and homeostasis. Maintaining homeostasis in the body is therefore crucial and is reflected at all levels, including that of glucose, a simple sugar molecule that is an essential fuel for normal cellular function. Despite numerous clinical studies that have shown the effect of various probiotics on glucose and its homeostasis, knowledge about the exact function of their mechanism is still scarce. The aim of our review was to select in vivo and in vitro studies in English published in the last eleven years dealing with the effects of probiotics on glucose metabolism and its homeostasis. In this context, diverse probiotic effects at different organ levels were highlighted, summarizing their potential mechanisms to influence glucose metabolism and its homeostasis. Variations in results due to different methodological approaches were discussed, as well as limitations, especially in in vivo studies. Further studies on the interactions between probiotics, host microorganisms and their immunity are needed.
Keywords: probiotic, mechanism, glucose, metabolism, homeostasis
Published in DKUM: 28.06.2024; Views: 415; Downloads: 10
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3. Monitoring website accessibility : evaluating current approaches and a proposal for improvementsMatjaž Debevc, Tilen Škraba, Bogdan Cerovac, Ines Kožuh, Nataša Rajh, 2023, original scientific article Keywords: accessibility, World Wide Web, web content accessibility guideline, web accessibility directive, accessibility monitoring, accessibility statement, feedback mechanism
Published in DKUM: 12.06.2024; Views: 112; Downloads: 3
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4. Human gait activity recognition machine learning methodsJan Slemenšek, Iztok Fister, Jelka Geršak, Božidar Bratina, Vesna M. Van Midden, Zvezdan Pirtošek, Riko Šafarič, 2023, original scientific article Keywords: human gait, activity recognition, wearable, machine learning, convolutional neural network, recurrent neural network, attention mechanism
Published in DKUM: 10.04.2024; Views: 274; Downloads: 19
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5. Research on vehicle re-identification algorithm based on fusion attention methodPeng Chen, Shuang Liu, Simon Kolmanič, 2023, original scientific article Abstract: The specific task of vehicle re-identification is how to quickly and correctly match the same vehicle in different scenarios. In order to solve the problem of inter-class similarity and environmental interference in vehicle images in complex scenes, one fusion attention method is put forward based on the idea of obtaining the distinguishing features of details-the mechanism for the vehicle re-identification method. First, the vehicle image is preprocessed to restore the image's attributes better. Then, the processed image is sent to ResNet50 to extract the features of the second and third layers, respectively. Then, the feature fusion is carried out through the two-layer attention mechanism for a network model. This model can better focus on local detail features, and global features are constructed and named SDLAU-Reid. In the training process, a data augmentation strategy of random erasure is adopted to improve the robustness. The experimental results show that the mAP and rank-k indicators of the model on VeRi-776 and the VehicleID are better than the results of the existing vehicle re-identification algorithms, which verifies the algorithm's effectiveness.
Keywords: vehicle re-identification, attention mechanism, key-point, local feature, feature fusion
Published in DKUM: 06.02.2024; Views: 348; Downloads: 17
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6. Planning and construction of the lifting and towing device of the autonomous mobile robot MiR 100 for the delivery of transport trolleys in intralogisticsTone Lerher, Aleš Belšak, Rok Skerbiš, Jure Tumpej, Žiga Volavšek, Domen Stamenov, Marko Motaln, 2022, published scientific conference contribution Abstract: Intralogistics is a very important area in warehousing and production for managing the flow of materials and informational flow. In recent years, automation and especially robotisation have had a major impact on throughput performance in intralogistics. Especially important is the transport of materials and products based on automated guided vehicles (AGVs) and autonomous mobile robots (AMRs) with different top modules,
such as the lifting and towing device.
In this paper, planning and construction of the lifting and towing device of the autonomous mobile robot MiR 100 for the delivery of transport trolleys in intralogistics is presented. Using the engineering design methods, a new design of the lifting and towing device has been proposed and evaluated.
Keywords: intralogistics, material handling systems, automation and robotisation, planning and construction, lifting and towing mechanism, simulation and animation
Published in DKUM: 15.03.2023; Views: 679; Downloads: 78
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7. Effect of particle roundness and morphology on the shear failure mechanism of granular soil under strip footingBabak Karimi Ghalehjough, Suat Akbulut, Semet Çelik, 2018, original scientific article Abstract: This study investigates the effect of particles roundness and morphology on the shear failure mechanism of soil. A strip footing was modeled under laboratory conditions. Calcareous soil was tested with three roundness classes: angular, rounded and well-rounded shapes with sizes of 0.30 mm to 4.75 mm. These were divided into six different groups at three relative densities of 30%, 50% and 70%. A series of photographs was taken during the tests and analyzed using the particle image velocimetry (PIV) method to understand the soil-deformation mechanism. The results showed that increasing the sample sizes increased the affected area of the soil. At the same time, increasing the relative density caused a punching failure mechanism that went towards the general failure. The shear failure mechanism of the soil changed from general toward punching shear failure with increasing particle roundness. This effect was larger with the smaller materials. Underneath the affected layers of soil, the angular samples were deeper than the rounded and well-rounded samples. The affected depth in the angular soil was approximately 1.5B in the smallest size group. This was more than 3B and near 4B in the largest size group. Both the sides and the underlying soil layers should be considered on angular soils. The area under the footing becomes more important than the side parts after increasing the roundness of the particles.
Keywords: particle roundness, morphology of particles, shear failure mechanism, strip footing, PIV method, ultimate bearing capacity
Published in DKUM: 11.10.2018; Views: 1653; Downloads: 511
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8. A fundamental study of the performance of X-section cast-in-place concrete single pilesYu Wang, Yaru Lv, Dongdong Zhang, Jieying Zhou, 2016, original scientific article Abstract: X-section cast-in-place concrete (XCC) piles are used because they have a higher bearing capacity than circularsection cast-in-place concrete (CCC) piles of the same cross-sectional area. Although the bearing capacity of XCC piles has been studied, the performance of XCC single piles, especially for the stress-transfer mechanism dependent on the geometrical effects, is still not fully understood. This paper reports two comparative field static load tests on an XCC and a CCC single pile of the same cross-sectional area. In addition, corresponding threedimensional numerical back-analyses are performed to provide a fundamental understanding. The measured and computed results reveal that the XCC single pile has an approximately 25% higher ultimate bearing capacity than the CCC single pile. This is because the XCC single pile has an approximately 20% larger total side resistance, which is caused by a 60% larger pile perimeter and a slightly smaller unit side resistance. Lateral soil arching effects are developed, causing a non-uniform effective normal stress and a shear stress across the circumference of the XCC single pile. It is suggested that XCC single piles have a higher efficiency in terms of material saving compared with CCC single piles.
Keywords: X-section cast-in-place concrete pile, field static load test, three-dimensional numerical back-analysis, stresstransfer mechanism, side resistance, soil arching
Published in DKUM: 15.06.2018; Views: 1462; Downloads: 185
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9. Corrosion mechanisms for cemented soils in three different sulfate solutionsPengju Han, Chao Ren, Xiaohong Bai, Frank Chen, 2015, original scientific article Abstract: In order to simulate and study the corrosion effects on the compressive strength of cemented soils that could be exposed in a polluted environment, a series of tests were conducted on cemented soil blocks cured with different concentrations of H2SO4, MgSO4, and Na2SO4 solutions. The test results show that the corrosion degree generally increases with the corrosion time and the solution concentration, while the compressive strength decreases with the increasing corrosion degree. The corrosion degree is highest for the Na2SO4 solution, followed by the MgSO4 and H2SO4 solutions. Namely, when the SO4 2- ion exists in a solution, the corrosion degree for the positive ions follows this descending order: Na+, Mg2+, and H+. X-ray diffraction (XRD) phase analyses were performed for the cemented soil samples after corrosion and ionic concentrations. The results show that the compressive strength decreases with an increase of the Mg2+ concentration in the MgSO4 solution and the Na+ concentration in the Na2SO4 solution. At the same time, the strength increases with an increase of the pH value of the H2SO4 solution. Based on the chemical analysis results, the corrosion of H2SO4 or MgSO4 solutions on cemented soils is deemed as a composite action involving the combined resolving and crystallizing corrosion processes. Furthermore, the corrosion of the Na2SO4 solution of cemented soil is a composite action consisting of dissolving and crystallizing.
Keywords: cemented soil, compressive strength, corrosion mechanism, sulfate, pollution, solution
Published in DKUM: 15.06.2018; Views: 1757; Downloads: 176
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10. Load transfer and stress in a piled gravity retaining wallQun Chen, Li Wan, Changrong He, Zihui Lai, 2010, original scientific article Abstract: The piled retaining wall is a new type of railway retaining structure in China. In the current design, the retaining wall, the beam and the piles are assumed to be independent components. Both the mutual action of the retaining wall, the piles and beam, and the influence of the soil or rock foundation on the structure are not fully considered, so that there are some limitations in the current design method. In this paper, using field observations and a three-dimensional finite-element analysis, the lateral earth pressure on the wall back, the stress distributions and the forces of the reinforcements in the beam and the pile were studied. The simulation results were in good agreement with the field observation data. These results revealed that the tensile stresses were very small and that these stresses were positive in most zones in the beam and the pile. It can also be observed that the tensile stresses or forces in the beam and pile obtained in this study were much smaller than those obtained using the current design method. This clarified the fact that the current design method used for the beam and the pile was very conservative and that it should be optimized to consider the effect of the foundation on the whole structure and the interactions among the different components.
Keywords: piled gravity retaining wall, field observation, finite-element analysis, stress, load transfer mechanism
Published in DKUM: 11.06.2018; Views: 1156; Downloads: 88
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