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ARTIFICIAL INTELLIGENCE (AI) IN E-PROCUREMENT: A LITERATURE REVIEW
Get PDFThe goal of e-procurement is to ensure the availability of relevant goods in a company, services, and other resources. A distinction is made between the strategic goals, which include quality and supply assurance, and the operational goals such as reduction of storage costs and optimization of the costs of activities in the ordering process. Despite the complexity and potential of E-procurement, support by artificial intelligence (AI) is still not widespread. To capture the current state of research and its use in practice, a systematic literature review on the use of AI in e-procurement is conducted in this paper
THE IMPACT OF THE COVID-19 PANDEMIC ON THE ECONOMIC RESULTS IN SELECTED COUNTRIES
Get PDFThe COVID-19 pandemic has affected almost all countries in the world. Its gradual spread has mainly affected the economies of countries, which have changed due to the measures and restrictions in place. There were differences between the size and rate of the indicators given before and after the pandemic. The aim of the paper is to evaluate the impact of the pandemic on the economy of selected EU countries
REGULATORY PROBLEMS IN LONGEVITY RISK MANAGEMENT IN THE POLISH PENSION SYSTEM
Get PDFLife expectancy has been increasing since the XX century and the first two decades of the XXI century globally, especially in developed OECD countries, including Poland. But future trends of lifespan for different countries and demographic cohorts remain uncertain. One of the many economic and social consequences of this process is the increase in the longevity risk in social security systems. The longevity risk (life expectancy risk) is the risk of living longer than expected. On an individual basis, the realization of longevity risk can cause exhaustion of pension savings and often poverty for elderly people. Group (aggregate) longevity risk – the risk that a certain age cohort will live longer than expected – is relevant for public and private institutions which are obliged to pay lifetime annuities. This article focuses on the issues of managing longevity risk in the pension system in Poland, in particular – the construction of public and supplementary pension systems and its ability to adapt to the challenges associated with longevity risk
EFFECTIVE LEARNING AND TEACHING TOOLS IN HIGHER EDUCATION
Get PDFGlobalization and technological revolution continuously creates new changes in the international market – and social environment. Such crisis-type changes like COVID 19 or the current energy-crisis generates even more remarkable and unpredictable turning points in the human relations and customer habits. These changes also make the education systems need new approaches and changes: modern education methods and actualised communication practises should be installed ⸻ the strong regulation environment of the education-institutions and the diversity and complexity of the factors affecting the efficient knowledge-transfer practices makes this topic compounded and complicated enough so that it is worth studying the interrelations of the various factors influencing the adaptability of education. This study introduces the results of 2 primary research: (a) a questionnaire survey about the usage of smart devices in the studies of the Hungarian and international university students in Hungary, and (b) a focus-group research among the members of the 2 target groups (mentioned above), in which the interviewees were asked about what kind of educational methods they find effective in the realization of their carrier goals within the changed social and economic environment
DEVELOPING PROBLEM-SOLVING SKILLS IN CHEMISTRY STUDENTS THROUGH PROJECT-BASED LEARNING
Get PDFThis article outlines the efforts undertaken to enhance the Advanced Organic Chemistry course at the third-year level by integrating transferable skills into the curriculum, thus improving the employability of students. The study demonstrates the potential of practical classes in promoting problem-solving and creative thinking skills, which are essential for achieving higher-order learning outcomes that are sought after by businesses and institutions hiring chemistry graduates. To achieve this, the course was redesigned to include a project that each student had to complete during their 12 days of allocated laboratory sessions, based on cutting-edge research, providing relevant and up-to-date information on the latest developments in the field. Students were given the freedom to make their own choices throughout the project, promoting initiative, self-confidence, problem-solving, and time-management skills. The project focused on developing technical skills crucial to research laboratories, instilling a curiosity-driven and research-oriented mindset that would enable students to face unforeseen challenges in their professional lives
THE ROLE OF TALES IN THE FORMATION OF THE ELEMENTS OF ARTISTIC- AESTHETIC CULTURE STUDENTS IN PRIMARY CLASSES
Get PDFThe author aims to inventory the specific characteristics of folk tales, at the level of poetic language and message, in order to establish a system of literary-artistic values suitable for primary school students. It has been found that folk tales, as a message, are based on moral and ethical universals, expressed by a universal language, the folk tales of the peoples of the world having, in large part, the same poetic characteristics, fact that can contribute to the perception and understanding of the universal values of humanity by reading/ hearing the Romanian folk tales and of other peoples. Approached from a methodological perspective, the tales are one of the forms of play – the first in importance of dominant activity in primary classes, from which it is established that dramatization, one of the artistic forms of play, is the most appropriate method of teaching-reception-comprehension of tales in primary classes
PHONETIC PECULIARITIES IN SLOGANS
Get PDFThe topic of the paper is phonetic peculiarities in slogans. Like any other living organism, language has its linguistic peculiarities, making it a unique and universal tool for everyday use. Sharing thoughts, considerations, and information may be a pivotal portion that marks the crucial role of language. Most of the time, communicating with companions, relatives, and colleagues does not bring a parcel of troubles. Still, it gets interesting and complex when it comes to communicating and sharing thoughts with a group of onlookers to arrange a business deal. For companies/organisations to adequately convey their messages, they have to use written-language tools to succeed while trying to sell a product. This is where the help of slogans comes into play. The problem question of the paper is what phonetic peculiarities are typical while creating slogans. The paper aims to identify the phonetic peculiarities found in business and political slogans
APPLICATION OF LOW-COST FLY ASH-BASED ADSORBENT FOR REMOVAL OF ACETOCHLOR HERBICIDE FROM WATER
Get PDFIn order to satisfy man\u27s existential needs for food and energy, two major problems arise in the environment. Excessive use of herbicides based on acetochlor (ACT) in order to maximize food production causes surface water contamination. Its effect on endocrine disorders in humans and animals has been proven. By burning coal in thermal power plants, in addition to electricity, we also get huge amounts of by-products in the form of fly ash and boiler ash, the disposal of which requires large areas of land, a huge amount of water and energy. These problems represent a major health, environmental and economic problem. In this work, the feasibility of using adsorbent based on fly ash as a cheap adsorbent for the removal of herbicide acetochlor from water was investigated instead of using commercial activated carbon. This study recognizes that fly ash (FA) is a promising adsorbent for the removal of various pollutants. Fly ash from the Morava thermal power plant was simply chemically treated with CaO and water to give modified fly ash (MFA), which proved to be an effective adsorbent for the removal of acetochlor (ACT) from water. The content of lime (CaO and water) in the fly ash was optimized in relation to the adsorption capacity of acetochlor using the D-Optimal Design method of response surfaces (RSM). For this purpose, the commercial software "Design expert 9" was used. The results showed that the pseudo-second-order rate equation effectively describes the adsorption kinetics and that the adsorption equilibrium is established after 60 minutes. The Freundlich model showed a better fit to the adsorption isotherm than the Langmuir model. The maximum Langmuir capacity of the adsorbent for ACT was 102.6mg g-1 at 25 °C at a solution pH of 8
FOLIAR APPLICATION OF UREA AS ALTERNATIVE NITROGEN NUTRITIONAL DELIVERY SCHEME FOR KONSERVOLIA AND KALAMON COMMERCIAL OLIVE ORCHARDS
Get PDFKonservolia and Kalamon olive orchards were tested for their vegetative and fruit growth after foliar urea applications served as nitrogen nutritional delivery scheme. Five urea aerial fertilizations (8-65 kg/m3/ha) from January to September with summer aerial supplement of buffered KNO3 replaced regular fertilization program for the above-mentioned olive orchards. Despite of different stem growth rates due to seasonal effect on tree physiology, throughout the experimental period no major changes in biomass productivity were observed for both varieties. Final size Konservolia fruits did not differ among conventional and foliar urea treatments. Although Kalamon olive fruits including pit data, differ in size among fertilization strategies with bigger size observed in foliar urea treated areas; their flesh firmness was found to be significantly lower to fruits received from soil fertilized orchards. Both varieties produced olives with increased pit weight and size and lower fruit flesh firmness when trees treated with urea. Konservolia decreases its fruit flesh/pit ratio as opposed to Kalamon where treated trees increased the weight of their commercial fruit flesh. Data suggest that each of tested olive varieties respond differently in foliar application of urea as a replacement of soil fertilization strategies. Results for Konservolia reveal that urea foliar applications can be approached as safe, conservative tactic nutritional replacement to soil fertilization for the orchard trees. For Kalamon variety, aerial treatments positively affect fruit size, increased pit size and flesh/pit ratio providing potentially faster harvest maturity times. This alternative nitrogen fertilization delivery strategy for Kalamon olive orchards can be considered as viable approach to restrict groundwater nitrate leaching and atmospheric pollution from previous fertilization conventional plans and increase fruit biomass for olive oil and olive waste byproducts useful in circular economy
ESTIMATING VISCOSITY OF LOW SUGAR APPLE MARMALADE USING BACKPROPAGATION NEURAL NETWORK
Get PDFIn this paper, a backpropagation neural network (BPNN) model was developed for the prediction of viscosity values of apple marmalade using experimental data collected from several measurements. Stevioside or Sucralose sweetener was used instead of sugar (sucrose) in some of the formulations. In the BPNN architecture, the shear stress, and shear strain with mass concentrations of the Stevioside, Sucrolase, and Sucrose were utilized as input, whereas the viscosity value of apple marmalade was used as an output to be estimated. The Stochastic gradient descent algorithm (SGD) was used to minimize the loss of the BPNN based on the experimental data set. The Mean squared error (MSE), and the coefficient (????2) were employed to assess the performance of the BPNN. The number of hidden neurons was found to be 20 using the adaptive hidden neuron algorithm. With 20 hidden neurons, the least MSE and the highest R2 value were attained. Furthermore, the predicted viscosity values were found to be within 1% of the experimental viscosity values. The developed BPNN model can, therefore, be effectively utilized to predict the viscosity of any fruit marmalade using the same input and output parameters in the data range where the new data is normalized with the experimental data used in this paper