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Technological vs. Non-Technological Mindsets: Learning From Mistakes, and Organizational Change Adaptability to Remote Work
- Wioleta Kucharska
- Maciej Kucharski
2023 Pełny tekst European conference on management, leadership and governance
The permanent implementation of the change in working methods, e.g., working in the virtual space, is problematic for some employees and, as a result, for management leaders. To explore this issue deeper, this study assumes that mindset type: technological vs. non-technological, may influence the organizational adaptability to change. Moreover, the key interest of this research is how non-technological mindsets adapt to remote work in the long run. Based on the OLS regression (SPSS PROCESS), authors analyze three data sets gathered via the questionnaire distributed using the CAWI method among Polish knowledge workers; the first data set was gathered in December 2019 before the COVID-19 crisis, and the next in 2021 and 2022. Findings revealed that before COVID-19, high intensity of contacts via technology-supported change adaptability only for the IT industry. Results obtained two and three years later exposed that interactions via technology also increased the change adaptability in other sectors. This study confirms that the technological environment can change the employee mindset. Nevertheless, at the same time, the adaptability process can be prolonged and complex even for highly educated knowledge workers’ groups. Since there is no development without technology today - patience and long-run perspective thinking are recommended to achieve sustainable growth. It is critical. Adaptation to technology-dominated virtual workspaces must continue, even if this is problematic for non-technological mindsets; abandoning this idea will only make the inevitable transformation longer and more challenging. Collective intelligence creation requires inclusion and patience instead of exclusion of those who face problems or abandonment of change when facing implementation problems rooted in mindsets.
Technologies for Joining and Forming Thin-Walled Structures in the Construction of Transportation Vehicles
- Dariusz Fydrych
- Andrzej Kubit
- Ján Slota
- Agnieszka Kowalczyk
2023 Pełny tekst Materials
Editorial
Technology adoption review for ageing well: analysis of technical solutions
- Ishaya Gambo
- M. Victoria Bueno-Delgado
- Kerli Mooses
- Francisco J. Melero Muñoz
- Rina Zviel-Girshin
- Aliaksei Andrushevich
- Michael Mrissa
- Agnieszka Landowska
- Kuldar Taveter
2023 Pełny tekst Frontiers in Public Health
While several technological solutions are available for older adults to improve their wellbeing and quality of life, little is known about the gaps between the needs, provided solutions, and their adoption from a more pragmatic perspective. This paper reports on reviewing existing technological solutions for older adults, which span the work life, life in the community, and wellbeing at home. We analyzed 50 different solutions to uncover both negative and positive features of these solutions from the perspective of the impact of technology adoption on the quality of life of older adults. Our approach harnesses holistic reasoning to determine the most suitable technologies available today and provides suggestions for improvement toward designing and implementing better solutions.
Technology brands in the digitally-based and network economy. Setting the background
- Wioleta Kucharska
- Ewa Lechman
2023
This chapter defines and draws a general picture on Digital Technologies and Technology Brands’ meaning in the current economy. It contextualises the role and channels of digital technology’s impact on their shaping technology brands in network economy. It briefly explains why digital, innovative technologies constitute a perfect background and environment for technology brands of global scope. It discusses the place of technology brands in modern and technology-driven economies, showing their contribution to economic activities, jobs creation, and business running modes—both in economic and managerial terms. Furthermore, it proposes further studies directions.
Technology-Enhanced Environmental Learning: Co-design of Educational Mobile Application Case
- Jolanta Kowal
- Helena Anacka
- Iwona Nowakowska
- Ewa Duda
- Hanna Obracht-Prondzyńska
2023
The process of co-creating an educational mobile application to support environmentally friendly behavior is presented in this paper. The research material consisted of quantitative data collected on the application during the first testing phase by early adopters. The results suggest that the most frequently used features of the app were related to transport and educational activities. While women tended to split their time between transport and learning, men focused mainly on transport. This study contributes to the growing field of the use of educational mobile applications for the promotion of environmentally friendly behavior. The study results can support the design and development of future applications that encourage sustainable practices, benefit society, and contribute to a more sustainable future.
Telomerase inhibition - unfulfilled hopes in the perfect molecular target
- Natalia Maciejewska
2023 Pełny tekst
Telomerase plays a pivotal role in cell proliferation, homeostasis, and neoplastic transformation, making it a promising molecular target for cancer chemotherapy. Of note, although hTERT has been explored thoroughly as a target, none of the promising molecules has been approved as a drug until now. The subject of research conducted as part of my doctoral dissertation is explaining the cellular and molecular mechanism of action of new heterocyclic compounds derived from the class of carbazole, pyrazole, and anthraquinone. Of all the candidates tested, only anthraquinones inhibited telomerase activity. I have shown that the most active compound (TXT4), apart from the typical features of telomerase targeting molecules, also preferentially damages DNA on telomeres. Furthermore, I have found that TXT4 has an additional mechanism of action, consisting of multidirectional inhibition of tyrosine kinases. From among carbazoles, I selected compounds 5aa and 8, which primary mechanism of action is reactive oxygen species production. In addition, I showed that the most promising compound from the pyrazole class is PCH-1, whose anticancer activity is based on the stabilization of tubulin polymerization - the cytoskeleton-forming protein. On the basis of the conducted research, I determined the main mechanisms of action of new anti-cancer compounds, which in the future may employ as the basis for the design and synthesis of new potential pharmaceutical agents.
Temperature Evolution, Material Flow, and Resulting Mechanical Properties as a Function of Tool Geometry during Friction Stir Welding of AA6082
- Aleksandra Laska
- Behzad Sadeghi
- Behzad Sadeghian
- Aboozar Taherizadeh
- Marek Szkodo
- Pasquale Cavaliere
2023 Pełny tekst JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
The friction stir welding process was simulated for joining AA6082 aluminum alloy with the use of the computational fluid dynamics method. Two different tool geometries were used—a tapered cylindrical pin (simple pin) and a hexagonal pin with grooves (complex pin). The analysis of the simulations performed was discussed in terms of temperature evolution during the process, total heat input, residual stresses and material flow. Simulations revealed that a 5% higher temperature, equal to maximum 406 °C, was provided when using the complex pin than with the simple pin. Higher temperature and higher shear stresses during the welding with the complex pin caused the introduction of higher residual stresses in the weld. Experimental results on the produced welds allowed observation of the microstructure of the joints, hardness tests in cross sections and tensile strength tests. Due to the higher temperature during the process with the complex pin and the more efficient recrystallization process, grain refinement in the SZ was more pronounced. The average grain size in the stir zone for the weld produced with the complex pin was equal to 11 ± 1 µm, and in the case of the simple pin 14 ± 1 µm. The presented hardness profiles revealed that the weld produced with a complex pin had higher hardness in the stir zone, equal to 89.5 ± 1.3 HV, which is consistent with the Hall-Petch relationship. The obtained UTS values corresponded to the joint efficiency of 72.5 ± 4.9% and 55.8 ± 8.6% for the weld produced with the complex pin and the simple pin.
Tensile and flexural moduli for human orbital wall bones – comparative study
- Paweł Lemski
- Krzysztof Żerdzicki
- Paweł Kłosowski
- Andrzej Skorek
- Marcin Zmuda Trzebiatowski
2023 Pełny tekst Acta of Bioengineering and Biomechanics
The main aims of the current research were: (1) to analyze in detail the tensile modulus and ultimate tensile strength (UTS) of orbital wall bones separately for the left and right orbit of the same cadaver and (2) to compare the obtained results with a flexural modulus of the left and right orbit reported earlier by A. C. van Leeuwen et al. [14]. A set of 54 specimens of orbital superior and/or medial walls harvested from 16 human skulls (4 female, 12 male) were tensioned at 0.01 mm/s till fracture. The samples were taken always from both orbits of the same cadaver. For each sample, cross-section area, apparent density, tensile modulus, and UTS were identified. For pooled female and male group apparent density for right and left orbit was identified to be 1.59 (± 0.52 SD) g/cm3 and 1.51 (±0.48 SD) g/cm3, tensile modulus of 2028 (±1729 SD) MPa and of 2706 (±2812 SD) MPa, and UTS of 14.17 (±15.00 SD) MPa and of 15.03 (±11.44 SD) MPa, respectively. For tensile tests, there were no statistical differences between the left and right orbit for pooled male and female groups for (a) apparent density (Student’s t-test p = 0.567), (b) UTS (Mann–Whitney U-test p = 0.350) and (c) tensile modulus (Mann–Whitney U-test p = 0.716). For bending tests, there were no statistical differences between the left and right orbit for the pooled male and female group for (a) orbital wall thickness (Student’s t-test p = 0.811) and (b) flexural modulus (Mann–Whitney U-test p = 0.206). The comparative analysis between tensile and flexural moduli for pooled left and right groups (with no distinction for male and female) revealed no statistically significant difference (Mann–Whitney U-test p = 0.074). The maximum tensile modulus was 7279 MPa and 9913 MPa for the right and left orbit, respectively, and was similar to the maximum flexural modulus of 6870 MPa and 9170 MPa reported in an earlier study, for the right and left orbit, respectively.
Teoretyczno-doświadczalne modelowanie konwekcji wymuszonej nanocieczy
- Przemysław Kozak
2023 Pełny tekst
Przedłożona rozprawa doktorska dotyczy badań eksperymentalnych oraz numerycznych konwekcji wymuszonej nanocieczy. Badane nanociecze wytworzone były z cieczy bazowych takich jak woda demineralizowana i mieszaniny wody z glikolem etylenowym w trzech proporcjach objętościowych 90:10, 80:20 i 60:40. Jako nanocząstki użyto Al2O3, a wytworzone nanociecze miały koncentracje masowe 0,1%, 1% i 5%. Wyznaczono eksperymentalnie dynamiczny współczynnik lepkości oraz współczynnik przewodzenia ciepła badanych nanocieczy. Wyznaczono współczynnik intensyfikacji cieplno-hydraulicznej badanych nanocieczy. Wyniki eksperymentalne porównano z wynikami obliczeń numerycznych.
Terminal charging scheduling of battery electric buses based on vehicle routing problem
- Bálint Csonka
- Mikołaj Bartłomiejczyk
2023
Electric buses are considered to be a viable solution for reducing emission in dense urban areas. However, the greater charging time is a huge challenge for operators. In this paper, charging scheduling method was elaborated based on vehicle routing problem using mixed-integer linear programming model. The main novelty of the paper is the combination of modelling aspect, namely flexible turn sequence and heterogeneous shared charging infrastructure. It was found that the method helps to reduce dwelling time and the number of buses in operation. In the future, we plan to integrate driver regulations, heterogeneous bus fleet, multiple depots and terminals into the model.
Testing of Technical Fabrics under Fast Camera Control
- Paweł Kłosowski
- Krystyna Michałowska
- Marek Przyborski
- Wojciech Jurczak
2023 Pełny tekst Advances in Science and Technology Research Journal
The dynamic development of measurement and recording techniques has been changing the way one conceives material strength. In this study, two different methods of evaluating the strength of fabrics are compared. The first is the typical and commonly used technique based on the use of a testing machine. The second method uses the so-called “fast camera” to monitor the entire process of the destruction of a fabric sample and analyse the behav-iour of the fabric during the experiment. Both methods provide interesting data and present a very specific way of experimentally evaluating the strength of fabrics.
Testing the Effect of Bathymetric Data Reduction on the Shape of the Digital Bottom Model
- Wiktor Mujta
- Marta Wlodarczyk-Sielicka
- Andrzej Stateczny
2023 Pełny tekst SENSORS
Depth data and the digital bottom model created from it are very important in the inland and coastal water zones studies and research. The paper undertakes the subject of bathymetric data processing using reduction methods and examines the impact of data reduction according to the resulting representations of the bottom surface in the form of numerical bottom models. Data reduction is an approach that is meant to reduce the size of the input dataset to make it easier and more efficient for analysis, transmission, storage and similar. For the purposes of this article, test datasets were created by discretizing a selected polynomial function. The real dataset, which was used to verify the analyzes, was acquired using an interferometric echosounder mounted on a HydroDron- 1 autonomous survey vessel. The data were collected in the ribbon of Lake Klodno, Zawory. Data reduction was conducted in two commercial programs. Three equal reduction parameters were adopted for each algorithm. The research part of the paper presents the results of the conducted analyzes of the reduced bathymetric datasets based on the visual comparison of numerical bottom models, isobaths, and statistical parameters. The article contains tabular results with statistics, as well as the spatial visualization of the studied fragments of numerical bottom models and isobaths. This research is being used in the course of work on an innovative project that aims to develop a prototype of a multi-dimensional and multi-temporal coastal zone monitoring system using autonomous, unmanned floating platforms at a single survey pass.
Textile reinforced concrete members subjected to tension, bending, and in-plane loads: Experimental study and numerical analyses
- Adam Ścięgaj
- Sebastian Almfeldt
- Fredrik Larsson
- Karin Lundgren
2023 Pełny tekst CONSTRUCTION AND BUILDING MATERIALS
Textile reinforced concrete has raised increasing research interest during the last years, mainly due to its potential to be used for freeform shell structures involving complex load situations. Yet, most experimental work has focused on test setups with primarily uniaxial loading. In the current work, such setups are complemented with a novel test setup of deep beams, including in-plane bending and shear. Further, nonlinear finite element analyses were carried out, applying an earlier calibrated bond-slip relation and efficiency factors for strength and stiffness of the textile reinforcement. It was found that the structural behaviour in terms of the overall stiffness, ultimate load and deformation, number of cracks, and total (summed) crack width, could be described with reasonably good accuracy. The inclusion of a calibrated efficiency factor for the stiffness of the yarn was shown to be vital. Moreover, it was shown to be important to weaken and randomise the material properties of the concrete at the location of transverse yarns, to trigger localisation (cracking) in the numerical model.
Texture or Linker? Competitive Patterning of Receptor Assembly toward Ultra-Sensitive Impedimetric Detection of Viral Species at Gold-Nanotextured Titanium Surfaces
- Wiktoria Lipińska
- Adrian Olejnik
- Monika Janik
- Mateusz Brodowski
- Karolina Sapiega
- Mattia Pierpaoli
- Katarzyna Siuzdak
- Robert Bogdanowicz
- Jacek Ryl
2023 Pełny tekst Journal of Physical Chemistry C
In this work, we study the electrodes with a periodic matrix of gold particles pattered by titanium dimples and modified by 3-mercaptopropionic acid (MPA) followed by CD147 receptor grafting for specific impedimetric detection of SARS-CoV-2 viral spike proteins. The synergistic DFT and MM/MD modeling revealed that MPA adsorption geometries on the Au–Ti surface have preferential and stronger binding patterns through the carboxyl bond inducing an enhanced surface coverage with CD147. Control of bonding at the surface is essential for oriented receptor assembling and boosted sensitivity. The complex Au–Ti electrode texture along with optimized MPA concentration is a crucial parameter, enabling to reach the detection limit of ca. 3 ng mL–1. Scanning electrochemical microscopy imaging and quantum molecular modeling were performed to understand the electrochemical performance and specific assembly of MPA displaying a free stereo orientation and not disturbed by direct interactions with closely adjacent receptors. This significantly limits nonspecific interceptor reactions, strongly decreasing the detection of receptor-binding domain proteins by saturation of binding groups. This method has been demonstrated for detecting the SARS virus but can generally be applied to a variety of protein–antigen systems. Moreover, the raster of the pattern can be tuned using various anodizing processes at the titania surfaces.
The accessibility, necessity, and significance of certified reference materials for total selenium content and its species to improve food laboratories' performance
- Chintankumar Padariya
- Małgorzata Rutkowska
- Piotr Konieczka
2023 Pełny tekst FOOD CHEMISTRY
Micronutrients are one of the most important groups of nutrients that our body needs daily in trace amounts to tackle deficiencies. Selenium (Se) is a mineral that occurs naturally in foods and is an essential component of selenoproteins that support the healthy functioning of the human body. Therefore, monitoring dietary Se concentrations must be a higher priority to meet daily intakes. Fulfillment can be addressed through applying various analytical techniques, and the certified reference materials (CRMs) tool plays a crucial role in quality assurance/quality control (QA/QC). The availability of certified CRMs for total Se content with addition to their species is presented. The review emphasizes the necessity of incorporating more food matrix CRMs certifying Se species, apart from total Se content, to meet method validation requirements for food analysis laboratories. This would help CRM producers bridge the gap between available food matrix materials that are not certified for Se species.
The Action Mechanisms, Anti-Cancer and Antibiotic-Modulation Potential of Vaccinium myrtillus L. Extract
- Mikayel Ginovyan
- Anush Babayan
- Anahit Shirvanyan
- Alvard Minasyan
- Barbara Kusznierewicz
- Izabela Koss-Mikołajczyk
- Anne Vejux
- Agnieszka Bartoszek-Pączkowska
- Naira Sahakyan
2023 Pełny tekst Discovery Medicine
Herbal medicinal products containing Vaccinium myrtillus L. (bilberry) fruits and fruit extracts are widely available in the market. Although bilberry leaves and stems are considered as bio-waste, they contain much higher levels of phenolic compounds than fruits. The study aimed to investigate the antimicrobial and anticancer potential of aerial part extracts from Vaccinium myrtillus L. (V. myrtillus, VM) plants harvested at high altitudes in Armenian landscape and characterize the bioactive phytochemicals. For evaluation of antioxidant properties, chemical-based tests (total phenolic and flavonoid content, and antiradical activity in 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) tests) and cellular antioxidant activity (CAA) assay were applied. Genotoxicity and anticancer properties of the extract alone and in combination with fluorouracil were explored in human cancer and normal cell lines. Antibacterial properties of V. myrtillus ex- tract alone and in combination with antibiotics, as well as their effect on proton-flux rate through cell membrane were explored on bacterial strains. The characterization of active phytochemicals was done using Liquid Chromatography-Quadrupole-Orbitrap High-Resolution Mass Spectrometry (LC-Q-Orbitrap HRMS).The V. myrtillus aerial part extract demonstrated promising antioxidant properties in all tests. The selective cytotoxic activity was documented against various cancer cell lines (human colon adenocarcinoma (HT29), human breast cancer (MCF- 7) and human cervical carcinoma (HeLa)), while it did not inhibit the growth of tested human normal primary renal mixed epithelial cells (HREC) even at 10-fold higher concentrations. The extract did not have genotoxic properties in comet assay making it a potential source for the development of anticancer preparations. The investigated extract did not directly inhibit the growth of Escherichia coli (E. coli) and Salmonella typhimurium (S. typhimurium) strains at up to 1 mg/mL concentration. However, V. myrtillus extract enhanced the kanamycin intake and increased its efficiency against E. coli strain. The phytochemical characterization of the extract showed the presence of different groups of phenolics. Based on obtained data, we suggest the aerial parts of the V. myrtillus plant as an alternative source of bioactive natural products for food supplements, nutraceuticals, functional foods and medicine.
The Application of Cluster Analysis in the Assessment of the Weldability of Unalloyed Steels
- Anna Szewczyk
- Klaudia Górska
- Adrian Wolski
- Dariusz Fydrych
2023 Pełny tekst Biuletyn Instytutu Spawalnictwa w Gliwicach
Non-alloy steels constitute a large group of steels characterised by diversified chemical composition, structural morphology and a wide range of mechanical properties (determining weldability). The paper presents results of multidimensional analyses (based on cluster analysis) of 110 selected unalloyed steel grades. Properties adopted as diagnostic features included the chemical composition, mechanical properties (yield point) and values of selected indicators concerning susceptibility to technological crack formation. The analyses (performed using Ward’s and k-means methods) resulted in a division of the 110 steels into five steel groups (clusters). The comparison of results obtained using two clustering methods and involving various classification criteria revealed that multidimensional analyses constituted a prospective method making it possible to assess the weldability of steels. However, results of such multidimensional analyses should be subjected to thorough and substantive analyses.
The Application of Dynamic Electrochemical Impedance Spectroscopy (DEIS) Technique in Corrosion and Corrosion Inhibition Studies
- Paweł Ślepski
- Husnu Gerengi
- Moses Solomon
- Saviour Umoren
2023
orrosion studies have attracted considerable interest in the areas of materials chemistry and industrial chemistry, as it affects the direct and indirect costs of industry, leading to huge economic setbacks due to the need for repair, maintenance, and even shutdowns due corrosion damage. This new volume is a comprehensive resource that presents new and up-to-date, theoretical, and experimental corrosion inhibition studies.
The Arnold conjecture in $ \mathbb C\mathbb P^n $ and the Conley index
- Luca Asselle
- Marek Izydorek
- Maciej Starostka
2023 DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B
n this paper we give an alternative, purely Conley index based proof of the Arnold conjecture in CP^n asserting that a Hamiltonian diffeomorphism of CP^n endowed with the Fubini-Study metric has at least (n+1) fixed points.
The assessment of solar photovoltaic in Poland: the photovoltaics potential, perspectives and development
- Bartłomiej Igliński
- Grzegorz Piechota
- Urszula Kiełkowska
- Wojciech Kujawski
- Michał Bernard Pietrzak
- Mateusz Skrzatek
2023 Pełny tekst Clean Technologies and Environmental Policy
The following article explains the current condition of the photovoltaics sector both in Poland and worldwide. Recently, a rapid development of solar energy has been observed in Poland and is estimated that the country now has about 700,000 photovoltaics prosumers. In October 2021, the total photovoltaics power in Poland amounted to nearly 5.7 GW. The calculated technical potential of photovoltaics in Poland is 153.484 PJ (42.634 TWh). This would cover 26.04% of Poland’s electricity needs. The main aim of the article is to assess the level of development of the photovoltaic market in Poland, the genesis of its creation, description of the current situation and determination of the development opportunities. As part of the aim, programs supporting the development of solar energy in Poland have been described and the SWOT analysis has also been performed. The strengths of photovoltaics include high social acceptance and low costs of photovoltaics system operation, while opportunities include rapidly increasing technological efficiency and decreasing cost of solar systems. On the other hand, weaknesses include the high costs of photovoltaics systems and the disparities in the amount of solar energy reaching the market during the year, whereas climate change and the coronavirus pandemic are threats. In 2020, PV became an investment hit in the energy sector and an economic driver in Poland. In the difficult time of two lockdowns caused by the global pandemic, domestic PV made a significant contribution to the maintenance of investment processes in the amount of PLN 9.5 billion and provided Poland with 35 thousand jobs. In 2020, 1.5% of the country’s electricity came from PV sources. In 2021, it will be 3.5%, and by 2025, solar energy will provide approx. 10% of Poland’s electricity. It is worth examining the development of photovoltaics from a broad and long-term perspective. The spectacular development of photovoltaics in Poland is due to hitting the right time window and reducing technology costs, but most of all, it is based on the cooperation of stakeholders and trust in the regulatory environment.