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1

Implementation of Industry 4.0 elements and their impact on the enterprise productivity

Żarski Wojciech, Lamparski Wojciech

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2024

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z. 194

701--710

EN

Purpose: The main incentive for choosing the topic of the study is related to the need to look for solutions to fundamental problems related to the activities of manufacturing enterprises that must meet the requirements of market competition by achieving competitive advantages and increasing productivity. The subject of the study are advanced manufacturing technologies, characterized by a high level of innovation and automation, and their impact on the productivity of a manufacturing company. The aim of the study is to assess the impact advanced manufacturing technologies on the productivity and production quality on the example of a company producing parts and components for rail vehicles. Design/methodology/approach: the study analyzed the literature on productivity and calculated productivity indicators based on the company's financial data. Moreover, the participant observation method was used to assess the reorganization of the production process, and a survey was conducted for company employees to determine the validity of the implemented technological investments. The case study concerns a company producing parts and components for rail vehicles. Findings: The level of approval of investments in advanced manufacturing technologies and their impact on the quality and efficiency of the manufacturing process of was determined. The implementation of advanced manufacturing technologies allowed the company to: shortened the manufacturing process by approximately 40%, the number of procedures was reduced from nine to five, and the number of employees participating in it was reduced from ten to five. Originality/value: assessment of the effects of the use of advanced technologies, the study is addressed to the management of manufacturing enterprises.

2

Investigation of Thermal Comfort, Productivity and Lighting Conditions in Higher Education Buildings

Siwczuk Natalia, Piotrowski Jerzy Zbigniew, Honus Stanislav

Rocznik Ochrona Środowiska

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2024

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Tom 26

30--40

EN

Thermal comfort and lighting conditions are essential aspects of indoor environmental quality. They are considered to influence the productivity of room users. The paper presents the experimental test results of research conducted in the university educational building of Kielce University of Technology (Central Poland) using anonymous questionnaires and physical measurements of indoor air parameters with a high-precision microclimate meter. It covers the analysis of the subjective assessment of thermal sensations, acceptability and preference, as well as productivity, lighting and air quality in eleven rooms (both lecture rooms and classrooms). The study analyses the impact of the indoor environment (mostly air temperature and illuminance) on the subjective sensations of the respondents they expressed in the questionnaires. The experiments have enabled us to provide valuable insights into developing the proper indoor environmental conditions to maximise room users' comfort and productivity.

3

Human resource productivity: integrating resilience engineering, motivation, and health safety

Putra Ida Bagus Udayana, Kot Sebastian, Ibrahim Abdul Halil Hi, Rajiani Ismi

Production Engineering Archives

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2024

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Vol. 30, Iss. 1

105-114

EN

This study investigated the multifaceted relationship between resilience engineering practices, work motivation factors, health, safety, and environment (HSE) management to achieve employee productivity within a mining company in South Kalimantan, Indonesia. Employing structural equation modelling (SEM) on data from 178 workers, intriguing results are diverged from established research. While resilience engineering practices and work motivation factors significantly enhanced productivity, robust HSE management demonstrated a surprisingly insignificant association. This unexpected finding necessitates a closer examination of the unique context of Indonesian mining culture and HSE implementation practices. Several potential explanations emerge, including ingrained communal responsibility for safety, limited applicability of imported frameworks, prioritisation of immediate needs over long-term safety due to competitive pressures, and possible erosion of trust in bureaucratic systems. These factors highlight the need to consider cultural nuances and industry challenges when designing effective HSE interventions. Moving forward, research and practice must prioritise developing culturally sensitive HSE practices, fostering trust and employee engagement, bridging the gap between formal systems and daily realities, and gathering qualitative data to understand employee perspectives. By addressing these considerations, future interventions can effectively align HSE efforts with employee productivity, contributing to a safer, more productive, culturally relevant work environment for Indonesian miners.

4

The Impact of Pre-Crops on the Formation of Water Balance in Winter Wheat Agrocenosis and Soil Moisture in the Steppe Zone

Pichura Vitalii, Potravka Larysa, Domaratskiy Yevhenii, Nikonchuk Nataliia, Samoilenko Mykola

Journal of Ecological Engineering

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2024

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Vol. 25, nr 3

253--271

EN

Under climate change, the issue of selection and correction of crop cultivation systems in the zone of moisture deficit and risky farming to ensure profitability of production is still topical. In particular, crop rotations are a practice aimed at increasing resistance of soil systems to abiotic and biotic stresses in the zone of moisture deficit. Therefore, the purpose of the research is to identify spatio-temporal regularities of vegetative formation of water balance in winter wheat agrocenoses depending on a pre-crop according to the unified BBCH scale. Spatio-temporal processes of vegetation and water balance formation in winter wheat agrocenosis depending on a pre-crop according to the unified BBCH scale were examined on the basis of the data of decoded satellite image series of the spacecraft Sentinel and calculation of the NDWI and the NDVI values. The research was conducted in the natural-climatic conditions of the Steppe zone of Ukraine, in the territory of Yelanets district, Mykolaiv region, during the vegetative phase of winter wheat variety Driada 1: autumn 2021 and winter, spring and the beginning of summer 2022. It was established that activeness of water balance formation in winter wheat agrocenosis with pea as a pre-crop according to seasonal-phenological stages of plant growth is 3.0–9.0 times higher than with a grain crop (spring barley) and sunflower as pre-crops. In particular, with pea as a pre-crop, the NDVI vegetation of winter wheat plants is 1.6–1.7 times more intensive, the rate of moisture supply NDWI in the plant leaf at the macro-stages BBCH 10–61 is 1.54 and 1.82 times higher, productivity is 1.43–1.56 times higher. We observed a 30.5–34.3% reduction in water consumption for the formation of a ton of winter wheat grain with pea as a pre-crop in comparison with other pre-crops that resulted in an increase in productive moisture reserves at the end of vegetation in a meter soil layer by 20%. It was established that using pea as a pre-crop has economic and environmental benefits that manifest themselves in increasing resistance of soil systems, a reduction in environmental pollution and a rise in profitability of production.

5

Influence of the Studied Factors on the Yield, Structure and Quality Indicators of Vegetable Peas under the Conditions the South of Ukraine

Almashova Viktoria, Breus Denys, Olifirenko Vitalii

Journal of Ecological Engineering

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2024

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Vol. 25, nr 6

312--321

EN

The article considered the elements of the resource-saving technology for the production of vegetable peas with the use of low doses of synthetic fertilizers by stimulating the action of nitrogen-fixing nodule bacteria. They are symbionts of vegetable peas, with the help of bacteria and microfertilizers. They are much cheaper than mineral fertilizers and are not harmful for the environment and, thanks to microdoses, are absolutely safe for people. During the research, it was established that, in addition to increasing the yield of agricultural crops, such agro-techniques contribute to increasing soil fertility (due to the accumulation of a greater amount of biologically pure nitrogen in it after harvesting vegetable peas, compared to existing technologies) and make it possible to extend the period of technical maturity of seeds and the period of their processing. This is a very important and urgent problem in southern Ukraine. It was also determined that the treatment of seeds with boron, molybdenum and Rizotorfin affects the timing of the onset of the main phases of development and the duration of the growing season of vegetable peas, extending it by several days, and this, in turn, allows farmers to harvest on time without economic losses. For the first time, for the conditions of the south of Ukraine, an opportunity was found to significantly extend the term of receipt of raw materials for processing without deterioration of quality indicators and dietary properties. The proposed techniques allow, in addition to the existing technology, to accumulate up to 40–60 kg/ha of biological nitrogen in the soil. It was recorded that the highest yield of the vegetable pea crop was formed during the first sowing period, when the seeds were treated with boron and molybdenum and amounted to 9.21 t/ha, which is 2.32 t/ha higher than the control. Based on the generalization of research results, a mathematical model of vegetable pea crop programming was built based on the principle of relationships between individual factors that affect the culture and the formation of its plant productivity.

6

Ecological and Technological Evaluation of the Nutrition of Perennial Legumes and their Effectiveness for Animals

Kovalenko Vitalii, Kovalenko Nataliia, Gamayunova Valentina, Butenko Andrii, Kabanets Victor, Salatenko Ivan, Kandyba Natalia, Vandyk Mykola

Journal of Ecological Engineering

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2024

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Vol. 25, nr 4

294--304

EN

Main task of feed production is to provide farm animals with nutrients. Insufficient or excessive intake of these elements can lead to undesirable consequences. For instance, a deficiency in mineral elements reduces the protective function of the animal’s body against various diseases and disrupts the functional activity of organs. Conversely, an excess of any element contributes to the expenditure of a significant amount of energy for its removal and, in some cases, leads to poisoning. Imbalanced animal feeding results in decreased productivity and a deterioration in the quality of products, leading to the production of non-viable offspring and a disruption of reproductive capacity. Our calculations have shown that increasing the energy concentration in the diet from 490 to 600 EFU/kg DM, combined with an increase in feed intake by 4.4 kg, ensures proportional energy consumption based on their productivity difference. In our research, we concluded that it is economically advantageous to use the planned norms of the nutrient requirements for cattle in feed planning.

7

Trends in the livestock and pork market in Poland with regard to the environmental impact of this production direction

Olszańska Anna, Kowalska Anna Sylwia, Szymańska Joanna, Paskudzka Klaudia, Soukal Ivan

Economics and Environment

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2024

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No. 1

art. no. 625

EN

After joining the European Union, the market economy continued to drive structural changes in meat production and processing. Unfortunately, the functioning of meat markets was impacted by several threats with significant adverse influence. Phenomena such as the spread of ASF disease, the United Kingdom's exit from the European Union or the Covid-19 epidemic added instability to the already cyclical pork market. The study aims to evaluate the functioning of Poland’s pork market and to identify the main trend in this market. Livestock and pork meat production in Poland form a significant economic sector; however, it creates considerable environmental challenges. The study focuses on key aspects such as greenhouse gas emissions, water usage, feed consumption, and waste management. The study covers the years 2004-2021, i.e., the period of seventeen years after Poland's accession to the European Union. The statistical data analysis methods showed four to three-year cycles in pork live stock with a decreasing amplitude over time and high and relatively stable domestic demand for pork. This provides a favourable foundation for future production direction. However, the systematic changes in the structure of meat consumption and price development led to a steady increase in the share of poultry meat at the expense of pork and bovine during the observed year span.

PL

Po przystąpieniu Polski do Unii Europejskiej kontynuowano zmiany strukturalne w produkcji i przetwórstwie mięsa zwierząt zapoczątkowane przez gospodarkę rynkową. Niestety w otoczeniu występuje wiele zagrożeń, których skutki mogą mieć istotne znaczenie dla funkcjonowania rynków mięsnych. Takie zjawiska jak rozprzestrzenianie się choroby ASF, wyjście Wielkiej Brytanii z Unii Europejskiej czy epidemia Covid-19 dodały niestabilności na i tak już cyklicznym rynku wieprzowiny. Celem opracowania jest ocena funkcjonowania rynku wieprzowiny w Polsce oraz identyfikacja głównych trendów na tym rynku przy jednoczesnym uwzględnieniu wpływu tego kierunku produkcji na środowisko. Produkcja żywca i mięsa wieprzowego w Polsce jest istotnym sektorem gospodarczym, ale wiąże się również z poważnymi wyzwaniami związanymi z ochroną środowiska. W opracowaniu skupiono się na głównych aspektach, czyli: emisji gazów cieplarnianych, zużyciu wody, zużyciu paszy i gospodarowania odpadami. Badanie obejmuje lata 2004-2021, czyli okres siedemnastu lat po przystąpieniu Polski do Unii Europejskiej. Metody analizy danych statystycznych wskazują, że krajowy popyt na wieprzowinę jest wysoki i względnie stabilny, co stanowi korzystną podstawę dla tego kierunku produkcji. Systematyczne zmiany w strukturze spożycia mięsa prowadzą jednak do stałego wzrostu udziału mięsa drobiowego kosztem pozostałych dwóch rodzajów mięsa.

8

Prospectives of Growing Energy Crops for the Production of Different Types of Biofuel

Hryhoriv Yaroslava, Butenko Yevheniia, Kabanets Victor, Filon Vasyl, Kriuchko Lyudmyla, Bondarieva Liudmyla, Mikulina Maryna, Yevtushenko Yevhen, Polyvanyi Anton, Kovalenko Vladyslav

Ecological Engineering & Environmental Technology

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2024

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Vol. 25, iss. 5

191--197

EN

The depletion of traditional energy sources and the increase in the cost of energy resources have a negative impact on the determination of the cost of production of agricultural and industrial products, which leads to a decrease in its competitiveness at the international level. Thus, the main task of the state is to ensure the efficient use of its own fuel and energy reserves and to diversify the sources and routes of supply of energy resources. Ukraine has all the necessary prerequisites for the widespread introduction and application of advanced technologies for growing and processing biomass and energy crops. The development of bioenergy technologies will help solve the problem of providing the country with energy resources, improve the environmental situation in the regions and help increase the employment of the local population. The fundamentals of growing less common energy crops are considered, the works of both domestic and foreign scientists are analysed, including the selection of the optimal place and soil, the establishment of optimal types of promising sparsely distributed energy crops, as raw materials for the energy sector of the state. Particular attention is paid to the need to improve the elements of technology in order to achieve a greater increase in biomass.

9

Cork Oak in the Maamora Forest (Morocco) – Updating its Distribution and Optimizing Cork Productivity for Sustainable Development

Ghazi Souad, Ziri Rabea, Brhadda Najiba, Chemchaoui Abdelazziz, Alaoui Hassana Ismaili, Boukita Hassan, El Asri Bouchra, Jdi Lahbib

Ecological Engineering & Environmental Technology

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2024

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Vol. 25, iss. 1

288--299

EN

In order to optimize cork productivity in the Maamora forest, specifically in the northern part of the A, B, C, D, and E cantons, the study focused on the analysis and updating of the distribution of productive cork oak (Quercus suber L.) stands as well as the evaluation of cork production over the past two decades. For this purpose, the available maps were corrected and updated using GPS data and field surveys between 2019 and 2022. Similarly, a thorough examination of the archives related to cork harvesting from the water and forestry administration was conducted and enriched by data collection during the survey. The obtained results indicate that the productive area is approximately 39% of the total area in the study zone. Simultaneously, statistical data has highlighted significant fluctuations in the annual gross cork production, coupled with a concerning decrease of 21.29% during the second rotation. Indeed, during the second rotation, 30% of the productive area was not harvested, compared to approximately 14% during the first rotation. Similarly, only 59% of the productive area underwent two harvest cycles. Despite these fluctuations, the recorded productivity during the second rotation, at 0.68 stere/hectare/year, remains above the national average. The differences between cantons are also noteworthy, emphasizing the impact of local factors on cork harvesting. In this context, ensuring sustained cork productivity while ensuring the sustainability of vegetal capital against climate change requires the implementation of an adaptive management approach.

10

Investigating the effect of electrospark alloying parameters on structure formation of modified nitrogen coatings

Haponova Oksana, Tarelnyk Viacheslav, Mościcki Tomasz, Tarelnyk Nataliia

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2024

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Vol. 72, nr 5

art. no. e150802

EN

The quality parameters of surface layers synthesised using electrospark alloying (ESA) technology were analysed in this paper. The main focus was on the influence of equipment energy parameters on structure formation, specifically the effect of discharge energy and productivity. Microstructural analysis of the modified surface of C40 steel after nitriding by ESA using a paste containing nitrogen compounds injected into the interelectrode gap was conducted. The layer structure for all studied ESA parameters includes three areas: the upper “white layer”, the diffusion zone below it, and the substrate. The roughness of the surface is Ra ∼ 0.9 µm at low discharge energy Wp = 0.13 J and Ra ∼ 6 µm at Wp = 3.4 J. The microhardness, continuity, and surface roughness of the layers varied with Wp. The influence of ESA productivity on the structure was studied. The thickness of the hardened layer and the diffusion zone, as well as the microhardness and continuity, are affected by reduced productivity. For the same discharge energy, the thickness of the hardened layer increases by 10-18% with a decrease in productivity compared to the classical mode. Studies have shown that productivity loss has a positive effect on the quality characteristics of the coatings produced by the ESA process.

11

The impact of the organization of the working day on production efficiency in the laboratory of plant tissue cultures

Pożoga Mariusz, Olewnicki Dawid

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2023

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z. 170

393--406

EN

Purpose: The aim of the study was to rate the employee’s productivity on different work day organization and to indicate the most optimal work schedule. Design/methodology/approach: For the research presented in this paper, strong literature review was done. We showed why human workforce is so important in tissue culture laboratory and why proper work organization is essential for increasing competitiveness of companies. Literature in the field of overtime work and short, elastic hours of work was also presented. Our research design checked effectiveness of work of ten employees of tissue culture laboratory in five different workday schedules. First combination was control and four other investigated influence of six hour work on main task in different arrangements on productivity. Data was statistically analysed with Kruskal-Wallis ANOVA. Productivity Index and Labour Productivity Index were also used for better results processing. Findings: The highest employees productivity is concentrated in the middle of work day. In conventional eight hour workday, the highest productivity is just after fifteen minute break. Six hour workday has big potential in increasing work, especially when main task is not interrupted by other activities and when work starts at the beginning of workday. Research limitations/implications: In future, research should be expanded on employees efficiency in work with bioreactor and costs analysis of plant production in such system. Practical implications: Our results are directed to plant tissue culture companies and others where employees are essential and their work requires concentration during repetitive activities. We suggest solutions increasing work efficiency. Originality/value: Our work presents hour after hour analysis of work efficiency in different workday organization in plant tissue culture company.

12

Klimat i oceanografia przełomu jury i kredy zachodniej Tetydy

Lodowski Damian Gerard

Przegląd Geologiczny

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2023

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Vol. 71, nr 10

514--522

EN

The key aspect for evaluation of potential effects of ongoing environmental changes is identification of their controlson one hand, and understanding of their mutual relations on other. In this context, the best source of information about medium and long term coThe key aspect for evaluation of potential effects of ongoing environmental changes is identification of their controlson one hand, and understanding of their mutual relations on other. In this context, the best source of information about medium and long term consequences of various environmental processes is the geologic record. Numerous different-scale palaeoenvironmental events took place during the Jurassic/Cretaceous transition; amongst them, the best documented so far are: long term marine regression during the Tithonian-early Berriasian, climate aridization during the late Tithonian-early Berriasian, and tectonic activity in western parts of the Neo Tethys Ocean during the late Berriasian-Valanginian. This study, which is based on the Ph Ddissertation of Damian Gerard Lodowski, attempts to reconstruct the latest Jurassic-earliest Cretaceous paleoenvironment and its evolution in the area of the Western Tethys, with special attention paid to cause-and-effect relationships between climate changes, tectonic activity and oceanographic conditions (perturbations in marine circulation and bioproductivity). Here are presented the basic results of high-resolution geochemical investigations performed in the Transdanubian Range (Hárskút and Lókút, Hungary), High-Tatric (Giewont, Poland) and Lower Sub-Tatric (Pośrednie III, Poland) series, Pieniny Klippen Belt (Brodno and Snežnica, Slovakia; Velykyi Kamianets, Ukraine) and Western Balkan (Barlya, Bulgaria) sections. The sections were correlated and compared in terms ofpaleoredox conditions (authigenic U), accumulation of micronutrient-type element (Zn) and climate changes (chemical index of alteration, CIA), providinga consistent scenario of the Tithonian-Berriasian palaeoenvironment evolution in various western Tethyan basins. Amongst the first-order trends and events, characteristic of studied sections are the two intervals recording an oxygen deficient at the seafloor: 1) the upper Tithonian-lowermost Berriasian (OD I); and 2) at the lower/upper Berriasian transition (OD II). Noteworthy, this phenomena cooccurred with elevated accumulations of nutrient-type elements (i. e. enrichment factor of Zn). Besides, collected data document the late Tithonian-early Berriasian trend of climate aridization, as well as the late Berriasian humidification. Such record is explained by a model, in which decreasing intensity of atmospheric circulation during the late Tithonian-early Berriasian was directly connected with climate cooling and aridization. This process resulted in lesser efficiency of up- and/or downwelling currents, which induced sea water stratification, seafloor hypoxia and perturbations in the nutrient-shuttle process during the OD I. On the other hand, the OD II interval may correspond to tectonic reactivation in the Neo Tethyan Collision Belt. This process might have led to physical cutoff of Alpine Tethys basins from the Neo Tethyan circulation (both atmospheric and oceanic), driving the limited stratification in the former, and limiting the effect of gradual humidification of global climate (i.e. due to increasing strength of monsoons and monsoonal upwellings). nsequences of various environmental processes is the geologic record. Numerous different-scale palaeoenvironmental events took place during the Jurassic/Cretaceous transition; amongst them, the best documented so far are: long term marine regression during the Tithonian-early Berriasian, climate aridization during the late Tithonian-early Berriasian, and tectonic activity in western parts of the Neo Tethys Ocean during the late Berriasian-Valanginian. This study, which is based on the Ph Ddissertation of Damian Gerard Lodowski, attempts to reconstruct the latest Jurassic-earliest Cretaceous paleoenvironment and its evolution in the area of the Western Tethys, with special attention paid to cause-and-effect relationships between climate changes, tectonic activity and oceanographic conditions (perturbations in marine circulation and bioproductivity). Here are presented the basic results of high-resolution geochemical investigations performed in the Transdanubian Range (Hárskút and Lókút, Hungary), High-Tatric (Giewont, Poland) and Lower Sub-Tatric (Pośrednie III, Poland) series, Pieniny Klippen Belt (Brodno and Snežnica, Slovakia; Velykyi Kamianets, Ukraine) and Western Balkan (Barlya, Bulgaria) sections. The sections were correlated and compared in terms ofpaleoredox conditions (authigenic U), accumulation of micronutrient-type element (Zn) and climate changes (chemical index of alteration, CIA), providinga consistent scenario of the Tithonian-Berriasian palaeoenvironment evolution in various western Tethyan basins. Amongst the first-order trends and events, characteristic of studied sections are the two intervals recording an oxygen deficient at the seafloor: 1) the upper Tithonian-lowermost Berriasian (OD I); and 2) at the lower/upper Berriasian transition (OD II). Noteworthy, this phenomena cooccurred with elevated accumulations of nutrient-type elements (i. e. enrichment factor of Zn). Besides, collected data document the late Tithonian-early Berriasian trend of climate aridization, as well as the late Berriasian humidification. Such record is explained by a model, in which decreasing intensity of atmospheric circulation during the late Tithonian-early Berriasian was directly connected with climate cooling and aridization. This process resulted in lesser efficiency of up- and/or downwelling currents, which induced sea water stratification, seafloor hypoxia and perturbations in the nutrient-shuttle process during the OD I. On the other hand, the OD II interval may correspond to tectonic reactivation in the Neo Tethyan Collision Belt. This process might have led to physical cutoff of Alpine Tethys basins from the Neo Tethyan circulation (both atmospheric and oceanic), driving the limited stratification in the former, and limiting the effect of gradual humidification of global climate (i.e. due to increasing strength of monsoons and monsoonal upwellings).

13

Technical study of the installation of a watercress nectar processor to reduce anemia in adults

Manrique-Suarez Luis-Alberto, Ochoa-Sotomayor Nancy-Alejandra, Salazar-Robles Héctor-Gavino, Flores-Masías Edward José

Management Systems in Production Engineering

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2023

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nr 1 (31)

59--70

EN

Peru has a diversity of exotic fruits and plants with recognized yields for food and health protection. Nectars are highly consumed food products, made from fruits or vegetables. The objective for the present work was to carry out the technical study of the installation of a watercress nectar processor to reduce anemia in adults; identify the demand, technical requirements for the operation and profitability of the processing facilities. Methodology. The analytical-synthetic method was used; The population of the target market was analyzed, the size of the sample was determined with the coefficient of variation method, (n = 384), the instrument used was the survey; the technical, economic-financial study was carried out. The results were the growth in the demand for nectars of 59.82%, with respect to the economic-financial evaluation, it has been shown that the results are satisfactory for the installation of the plant, with the economic and financial IRR, both rates proving to be attractive. for the project. From the projected income statement for the 2021-2025 period, it can be deduced that for 2025 there was a net profit of S/316,971.39. Other indicators such as the economic and financial NPV, the B/C ratio and the PRI that were satisfactory for the Project, making its execution viable. The conclusion this study was the technical study for the installation of a nectar processing plant to reduce anemia in adults in Lima, which was viable in terms of operation and profitability, taking advantage of its healing and nutritional properties.

14

A bibliometric analysis of educational research publications on lean manufacturing: Identifying key themes and trends

Mohamud Ibrahim Hassan

Management Systems in Production Engineering

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2023

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nr 4 (31)

418--426

EN

Since there is so much empirical research in the field of lean manufacturing, to provide a comprehensive overview of the literature on this subject, a bibliometric analysis was required. Through science mapping and multi-dimensional bibliometric analysis, this study aims to identify common themes in the most-cited research on lean manufacturing. A bibliometric analysis was conducted using VOSviewer, including keyword occurrence, co-authorship network, and bibliometric coupling network analyses. From the 4,648 results in the SCOPUS database search, the 100 most-cited articles were analyzed. The analysis found four research clusters: “lean manufacturing,” “productivity,” “manufacture,” and “value stream mapping.” It was also found that most of the most-cited papers came from journals with a Q1 ranking. Based on these results, scholars work to learn as much as they can about the field. The results are important to researchers because they show how far the research on lean manufacturing has come. As far as the author knows, no other study has been done on bibliometric analysis of the topic. By making a scientific map of what is known about lean manufacturing, this study adds to what is already known.

15

Space-time quantification of aboveground net primary productivity service supply capacity in high Andean bofedales using remote sensors

Cano Deyvis, Crispin Astrid, Custodio María, Chanamé Fernán, Peñaloza Richard, Pizarro Samuel

Journal of Water and Land Development

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2023

|

no. 56

172--181

EN

The aboveground net primary productivity (ANPP) of bofedales is one of the most important indicators for the provision of ecosystem services in the high Andean areas. In the case of bofedales, the evaluation of the ANPP supply capacity as a service on a spatial and temporal scale through remote sensing has been little addressed. The capacity, intra and interannual, to provide the ANPP of the high Andean wetlands was quantified at a spatial and temporal level through remote sensing. The normalized difference vegetation index (NDVI) of the MODIS sensor was used according to the Monteith model (1972), product of the incident photosynthetically active radiation, fraction of the absorbed radiation, and the efficiency of using the radiation of the calibrated vegetation with dry matter sampling in the field. Results show an ANPP prediction R 2 of 0.52 (p < 0.05), with no significant spatial difference between field samples. When applying the model, the intra-annual temporary ANPP supply capacity presents a maximum average of 160.54 kg DM·ha -1·month -1 in the rainy season (December-May) and a maximum average of 81.17 kg DM·ha -1·month in the dry season (June-October). In 2003-2020, the interannual temporary capacity presented values of 1100-1700 kg DM·ha -1·year -1. This makes it possible not to affect the sustainability of the wetlands and prevent their depletion and degradation. Understanding the ANPP supply capacity of bofedales can favour the efficient use of the resource and indirectly benefit its conservation.

16

Productivity of Cotton in Association with Food Crops in Soil without Nutritional Assistances

Montero-Cedeño Silvia Lorena, Cañarte-Bermúdez Ernesto Gonzalo, Navarrete-Cedeño Jose Bernardo

Journal of Ecological Engineering

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2023

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Vol. 24, nr 6

75--85

EN

Intercropped systems have agro-ecological and socioeconomic advantages over monocultures. Cotton is used in systems associated with food crops as an option to increase sustainability in family farming. The objective of this research was to evaluate the productivity of cotton in association with food crops, without using any nutritional assistance in the soil. This study was conducted on the rainy season of 2020 in Manabí-Ecuador. Six treatments were performed: four treatments related with the association of cotton with peanut, cowpea bean, field corn, and sweet corn; and two treatments with cotton monoculture (with and without soil fertilization). Agronomic, productive, and phytosanitary variables were evaluated in 60 m2 experimental plots. A randomized complete block design with four replications was used. The results determined that cotton yield in the association with peanut was significantly equal to the monoculture with and without fertilization. In the intercropped food crops, there was a reduction in production in relation to the monocultures. However, it was the peanut in association with cotton with the lowest reduction, in addition to presenting the best Land Equivalence Ratio (1.71) and the best Marginal Rate of Return (120.56%), which suggests that this association is a viable alternative and easy to adopt by the small cotton producer.

17

Impact of Global and Regional Climate Changes upon the Crop Yields

Kaminskiy Viktor, Asanishvili Nadia, Bulgakov Volodymyr, Kaminska Valentyna, Dukulis Ilmars, Ivanovs Semjons

Journal of Ecological Engineering

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2023

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Vol. 24, nr 4

71--77

EN

The negative impact of global and regional climate changes upon the crop yields leads to the violation of the crop production stability. The development of reliable methods for assessment of the climatic factors by the reaction of the crops to them in order to minimize the impact of climatic stresses upon the sustainability of food systems is an urgent scientific task. This problem was studied on the example of growing corn. A mathematical analysis of the main meteorological indicators for 16 years of research has been performed on the basis of which the frequency and direction of the occurrence of atypical and extreme weather conditions in various periods of the corn vegetation season were established by the coefficient of significance of deviations of the weather elements from the average long-term norm. It has been proved that the probability of occurrence of such weather conditions in the period from April to September is 38–81% in terms of the average temperature of the month, and 31–69% in terms of precipitation. By using the information base of the corn yields in a stationary field experiment with the gradations of factors: A (the fertilizer option) – A1-A12, B (the crop care method) – B1-B3, C (the hybrid) – C1-C7, the most critical month of the corn ontogeny was established when the weather has a decisive influence upon the formation of the crop. With the help of the correlation-regression analysis it was proved that the corn yield most significantly depends on the average monthly temperature in June, and for the hybrids with FАО 200–299 – on the amount of precipitation in the month of May. The obtained mathematical models make it possible to predict the yield of corn at a high level of reliability depending on the indicators of the main climate-forming factors in June, that is, even before the flowering of the plants (before the stage of ВВСН 61).

18

Growing Conditions and System Productivity in a Closed-Loop Aquaponic System Under Varying Stocking Density

Fabula Jeannie-Rose G., Gavino Helen F., Sace Chito F., Cinense Marvin M., Sicat Emmanuel V., Abucay Jose S.

Journal of Ecological Engineering

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2023

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Vol. 24, nr 6

25--39

EN

Aquaponics is an integrated form of a multi-commodity production system that combines a recirculating aquaculture system with the hydroponic cultivation of crops using the same water via recirculation using pumps. However, the ideal density of cultured aquatic species and the suitable fish/plants/fish feed combinations applicable under aquaponics must be established to determine its impact on the system’s performance, including the local growing conditions that could affect its productivity. Eighteen aquaponic systems following a closed-loop water recirculation method were established for the production of red tilapia, giant river prawns, lettuce, and duckweed. The study aimed to establish the ambient growing condition, water quality, and productivity of the system subjected to different stocking densities of fish (RT24 – 24 fish/m3, and RT48 – 48 fish/m3) and prawn (P0 – zero prawn, P12 – 12 prawns/m2, and P25 – 25 prawns/m2. Results show that with an ambient air temperature and humidity ranging from 30–35 °C and 52–71% during the production, the obtained water quality conditions in the system were: water temperature 27–30 °C; dissolved oxygen (DO) 2.8–3.3 mg/L; pH – 8.3; total ammonia nitrogen (TAN) close to 0, Nitrite – 0; Nitrate – 40 to 160 mg/L; total dissolved solids (TDS) – 580 mg/L; and a daily water loss of 1.47% which were within the tolerable growth conditions of the different species. The stocking density of 24 fish/m3 and 12 prawns/m2 resulted in better growth and yield performance of the cultured aquatic species. However, the stocking densities had no significant effect on the growth and yield of lettuce and duckweed.

19

Formation of the Yield of Matricaria recutita and Indicators of Food Value of Sychorium intybus by Technological Methods of Co-Cultivation in the Interrows of an Orchard

Bakhmat Mykola, Padalko Tatiana, Krachan Tatiana, Tkach Oleg, Pantsyreva Hanna, Tkach Liliya

Journal of Ecological Engineering

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2023

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Vol. 24, nr 8

250--259

EN

This study was aimed at theoretical generalizations and experimental results of research on the influence of the combined cultivation of medicinal plants wild chamomile (Matricaria recutita L.) and root chicory (Sychorium intybus L.) in the rows of gardens, which actualizes the issue of increasing productivity in industrial orchards. Therefore, the authors strove to increase the efficiency of growing research crops using fruit plantations, thereby ensuring a shortened payback period for capital investments spent on their creation. The conducted scientific studies have shown that the effect of aster yield on the content of bioactive substances in medicinal plant raw materials depends on the type of soil and climatic conditions of the studied territory, the cultivar, the sowing period, the genetic characteristics of the seeds, and the sowing conditions, etc. The purpose of the conducted research was to determine the patterns of crop formation of the presented medicinal plants in the inter-row orchard according to the elements of agricultural techniques of cultivation under the agroecological conditions of the Right Bank Forest Steppe of Ukraine. As a result of the conducted research, the expediency of cultivating existing plants on the area of the allotted plot was confirmed. The optimal timing of autumn sowing for cultivar ‘Perlyna Lisostepu’ with a seeding rate of 6 kg/ha and a yield of dry mass of inflorescences of 1.81 t•ha−1 was studied. The main indicators of the seedless method of planting chicory root crops of the second year for wintering in the open ground were established, while 35–40 t•ha−1 of high-quality root crops were obtained. Using the methods of qualitative and quantitative analysis, the raw materials of chamomile medicinal cultivars ‘Perlyna Lisostepu’ and ‘Bodegold’ were investigated for the content of flavonoids, chamazulene and its derivatives, as one of the important indicators of the quality of the essential oil, as well as the component composition of the root chicory cultivars ‘Umansky-99’ and ‘Umansky-97’, in relation to the quantitative ratio hydroxycinnamic acids and flavonoids in a 1:1 infusion. Accumulation of inulin continued throughout the growing season of root chicory, reaching the optimal content at the beginning of technical ripeness, and the highest rate was 11.5–17.51% in the sub-winter sowing period.

20

Evaluation of the Efficiency of Energy Populus (Poplar) Growing Technology as an Alternative Source of Energy

lys Nadiia, Tkachuk Nadiіa, Butenko Andrii, Kozak Maksym, Polyvanyi Anton, Kovalenko Vitalii, Pylypenko Viktoriia, Andrukh Serhii, Livoshchenko Yevheniia, Livoshchenko Ludmila

Journal of Ecological Engineering

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2023

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Vol. 24, nr 12

152--157

EN

After conducting research on energy Populus plants, it was discovered that biometric indicators and productivity were affected by both sowing density and nutritional background. The results showed that the tallest energy Populus shoots were observed in the group with a sowing density of 5600 pieces/ha, reaching heights of 11.1–11.6 m. The diameter of the central shoot in this variant was between 157 and 163 mm. The number of shoots was 1.8–2.5 pcs. on 1 plant and 21600–30000 pcs. on 1 hectare. The variant with a sowing density of 6700 units/ha yielded the most energy Populus biomass, specifically 178.3 tons of green mass and 100.9 tons of dry mass per hectare. Compared to the variant with a sowing density of 8300 units/ha, this represented an increase of 19.9 and 11.3 t/ha respectively, and an increase of 18.0 and 10.4 t/ha respectively, when compared to the variant with a sowing density of 5600 units/ha. The utilization of mineral fertilizers was shown to notably enhance productivity, as evidenced by an increase in green mass of 21.1–37.1 t/ha and an increase in dry mass of 11.2–20.6 t/ha across all trial variations. In the Precarpathian region, where sod podzolized soils are prevalent, the optimal sowing density of energy Populus biofuel was determined to be 6700 pcs./ha, with a yield of 110.990 kg/ha achieved through the application of mineral fertilizers. This approach generated an energy output of 1775.8 GJ/ha. In the case of a sowing density of 8300 units/ha and the use of mineral fertilizers, the energy output produced was 1576.9 GJ/ha, whereas sowing density of 5600 units/ha resulted in an energy output of 1591.0 GJ/ha. The introduction of mineral fertilizers led to an increase in energy output ranging from 12.3 to 22.6 GJ/ha for all experimental variants.