Field Level Research Articles

Hieroglyphs, or science fiction icons and the rate and direction of innovation

ABSTRACT It is striking just how large a role science fiction plays in contemporary processes of innovation and technological change and how comparatively little attention this role has received in innovation scholarship. What little research exists on the issue has been based on hypotheses that science fiction envisions technological futures, inspires technological innovation, or shapes the supply of innovators. I explore an alternative hypothesis. Science fictional ideas can also function as hieroglyphs. Following the work of Neal Stephenson, a hieroglyph is an iconic idea, a simple and recognizable symbol with an agreed-upon significance. Hieroglyphs can be drawn from literature (e.g., robots as described by Isaac Asimov or cyberspace as described by William Gibson), film (e.g., rogue AI from 2001: Space Odyssey), series (e.g., intergalactic space travel from Star Trek) or other sources. Such hieroglyphs can influence the rate and direction of innovation through at least four mechanisms. At the individual level, hieroglyphs can serve to frame technology adopters’ understandings and to focus technology developers’ attention, thus shaping the direction of innovation. At the level of organizations and field, hieroglyphs can coordinate technology developers’ activities within and across organizations and corroborate narratives of technological opportunities, thus shaping the rate of innovation. I suggest ways that future empirical scholarship might explore these mechanisms, and I propose how these mechanisms, if borne out empirically, might invite some reconsiderations of especially innovation management pedagogy.

Computational Simulation of MHD Blood-Based Hybrid Nanofluid Flow Through a Stenosed Artery

As the leading cause of death worldwide, cardiovascular disease underscores the urgent need for effective therapies and diagnostic tools. The use of magnetic fields and nanoparticles has demonstrated potential for creating cutting-edge treatments. To analyse blood flow in an artery with stenosis and the impact of an external magnetic field on blood flow infused with hybrid nanoparticles, this study is conducted. A generalised power law is used to model the flow of a hybrid blood nanofluid comprising silver (Ag) and gold (Au) nanoparticles. This study focuses on a deeper level of the magnetic field with hybrid nanoparticles in a non-Newtonian fluid, which extends from previous studies on nanoparticles in Newtonian blood. In a straight artery, the blood flow through a cosine-shaped stenosis is simulated using COMSOL Multiphysics software. The physical controlling parameters, including velocity profiles and wall shear stress, are illustrated through graphs. The external magnetic field significantly reduces shear stress and the velocity profile. The addition of gold and silver nanoparticles allows for smooth blood flow in the diseased artery. The findings show a decline in aberrant behaviour and recirculation in the post-stenotic area. The combination of a hybrid nanofluid with an external magnetic field presents a practicable method for improving blood flow in stenosed arteries. The results have implications for targeted drug delivery in stenotic arteries and advancements in nanomedicine.

Multi-scale monitoring and safety assessment of a prefabricated subway station integrating space-borne InSAR, ground-based machine vision and internal-distributed fiber optic sensors

ABSTRACT Safety monitoring of prefabricated subway stations is essential for early detection of potential damages to mitigate major accidents. This study developed an integrated multi-scale safety assessment and monitoring strategy for a prefabricated subway station by combining space-borne synthetic aperture radar interferometry (InSAR), ground-based machine vision, and internal-distributed fiber optic sensing (DFOS) technologies. Compared to the traditional single-data-source-monitoring method, the proposed space-ground-internal integration strategy is designed to monitor the multi-scale damages of prefabricated subaway stations. This includes the mm level of ground subsidence, submm level of structural surface deformation, and microstrain level of structural internal strain field. Taking the prefabricated Shapu Station in Shenzhen as the research site, the spatiotemporal evolution of land subsidence, the underground structural settlement and convergence deformation, as well as the structural internal strain changes were monitored. Then, a multi-scale data fusion methodology combining the space-borne InSAR, the ground-based machine vision, and the internal DFOS measurements was presented for effective safety assessment of the subway station. The monitoring results indicated that deformation occurred during the backfill period, and the settlement of the dangerous assembly ring increased (the seventh ring was at the lowest safety level) when the backfill of the assembly section was completed.

Incidence, Damage and Management of the Major Pests and Diseases of Robusta Coffee, [Coffea canephora (Pierre Ex A. Froehner)] in Uganda

Black Coffee Twig Borer (BCTB), Xylosandrous compactus Eichhoff (Coleoptera: Scolytidae) and Coffee Wilt Disease (CWD) are still the two main biological constraints to Robusta coffee production in Uganda. A rapid assessment survey was conducted in January 2022 in the Regions of Eastern (Busoga), Greater Masaka, Western, South western and Rwenzori to determine the status of pests and diseases in the different regions. A short-structured questionnaire with both open and closed-ended questions was administered to 268 participants that were purposively selected in different regions. At plot level, five coffee plants were selected in each of the sampled coffee farms for observation. The selected stems were checked for infestation by the stem borers and root mealy bugs (evidenced by ants moving up and down the coffee tree). The coffee canopy was divided into 2 imaginary sections—upper and lower to assess damage by leaf skeletonizers, tailed caterpillars, beetles, aphids, mealybugs, lygus, brown eye spot, coffee leaf rust, scales, aphids, berry moth and red blister. In addition, data was collected at field level parameters including: shade intensity, the most common shade trees, weed management and most common weeds (whether grasses, sedges or broadleaved), mulching intensity and mulching material, manuring intensity and common manure used, fertilizer application and type of fertilizer used, presence and type of cover crops, presence of bands and trenches as well as intensity of intercropping and the most common intercrops. Field observations revealed that the Black Coffee Twig Borer (BCTB) was responsible for the drying up of young and old coffee branches across all regions together with Coffee Wilt disease (CWD) to a smaller extent. On average, 9.4% of the primary branches were infested by BCTB. The highest damage levels of BCTB were recorded in Eastern (17.2%) and Western (12.4%) regions. Although, BCTB affected all ages of coffee, young coffee of 2-3 years was most affected. Overall, 3.9% of the sampled coffee trees were infected by Coffee Wilt Disease (CWD), with the highest incidence (8.2%) recorded in Southwestern Uganda. There is need to enhance existing management measures for coffee pests and diseases especially BCTB and CWD. Due to the high levels of spread of BCTB, this will require a community approach to sensitize farmers through meetings and media on the sustainable management of BCTB. There is also need to come up with good dissemination strategies of Coffee Wilt Disease Resistant varieties to aid their uptake and roll out a gap filling programme for coffee trees infected and destroyed by CWD across all regions using CWDr varieties.

Influence of Free Surface on the Hydrodynamic and Acoustic Characteristics of a Highly Skewed Propeller

The noise analysis of a large-scale aquaculture vessel reveals that during its navigation, the primary equipment noise, particularly from the propeller, exerts a notable influence on the aquaculture environment for large yellow croaker. The free surface greatly impacts the noise performance of propellers, which is a significant factor affecting the fish’s habitat. This study adopts the numerical simulation method to analyze the hydrodynamic and acoustic characteristics of the E1619 propeller operating near the free surface. The open-water performance and noise calculations of the propeller are verified through experiments, and the effects of different immersion depths and advance coefficients on the propeller are explored. The results demonstrate that the free surface significantly affects the thrust, torque, and noise of the propeller, especially at shallow immersion depths and low advance coefficients. Surface wave pattern causes the instability and breakup of tip vortices, causing increased thrust and torque fluctuations, reduced efficiency, and significant overall sound pressure levels in the entire flow field. As immersion depth and advance coefficients increase, the interaction between tip vortices and the free surface weakens, wake vortex instability decreases, and noise levels gradually reduce. These analyses and conclusions can guide the design of next-generation propellers for aquaculture vessels to optimize performance near the free surface.

Effects of Lu-doping on the magnetic behaviour and ordering of (Ho[formula omitted]Lu[formula omitted])2Fe2Si2C

We have investigated the effects of Lu substitution on the magnetic behaviour and ordering of (Ho1−xLux)2Fe2Si2C (x = 0.32 and 0.46) by high-resolution neutron powder diffraction, magnetisation and specific heat over the temperature range 2 to 300 K. Our study has establised that the antiferromagnetic (AFM) state is weakened upon Lu substitution and that the Néel temperature TN shifts towards lower temperature with increasing Lu content. The replacement of the magnetic Ho3+ ion by the non-magnetic Lu3+ ion of smaller atomic radius, leads to a modification of the crystal field levels, as indicated by the specific heat measurements. Neutron diffraction data analysis reveals that the magnetic structure of undoped Ho2Fe2Si2C, which exhibits a commensurate, antiferromagnetic ordering of the Ho sublattice along the b-axis with a propagation vector k = [0, 0, 12], is maintained in the Lu-doped (Ho1−xLux)2Fe2Si2C compounds.

Implementation of Fuzzy Logic to Control Soil Moisture Level in Arduino-Based Rice Fields

In Indonesia, where the agricultural sector is pivotal in the economy and most of the population are farmers, effective soil moisture control is crucial for optimizing crop production. This study investigates the application of modern technology, particularly Arduino microcontrollers utilizing Fuzzy Logic, to enhance irrigation management in rice fields. Given the challenges of irregular water supply due to geographical and temporal variations, additional infrastructure such as waterways, dams, and pumps are indispensable for regulating water distribution. By integrating Arduino microcontroller technology with Fuzzy Logic, precise and adaptive soil moisture management can be achieved, ensuring optimal water usage and improving crop yields. This research contributes to advancing sustainable agriculture in Indonesia, addressing the pressing need for food security amidst a growing population.

ЕЛЕКТРИЧНЕ ПОЛЕ У ЗШИТО-ПОЛІЕТИЛЕНОВІЙ КАБЕЛЬНІЙ ІЗОЛЯЦІЇ З ЕКСЦЕНТРИЧНІСТЮ ТА ДЕФЕКТОМ НАПІВПРОВІДНОГО ЕКРАНА

The study of two-dimensional electric field in cross-linked polyethylene (XLPE) insulation with eccentricity and a protrusion of the insulation into the internal semiconducting screen of high-voltage cable is carried out by computer modeling. The non-uniformity of the distribution and the regularities of the change in the level of the electric field depending on the considered defects are analyzed. The dependence of the maximum electric field strength on insulation concentricity (within the range of 0–0.5) is presented. The need to prevent the eccentricity of the XLPE insulation system and its defects in the production process of power cables is grounded to ensure their high quality and further reliable operation. Ref. 15, fig. 6.

Integrated management of Amaranthus spp. using cover crops and herbicide strategies

Amaranth (Amaranthus spp.) resistant to glyphosate and diclosulam represent the most important weed complex in Uruguayan agricultural systems. The objective of this study was to evaluate the use of cover crops (CC) and herbicide strategies (HS) in the management of amaranth. The work was divided into two stages, the first conducted at the field, where the use of CC and pre/post-emergent HS was evaluated. Black oat and Rye were used as CC, and 15 HS (pre and/or post-emergent) were applied to manage amaranth in soybean crops. The second study was conducted in a greenhouse, where the control of amaranth was evaluated using 15 pre-emergent HS associated with black oat or rye straw. Nine HS were also considered for post-emergent weed management. The results showed that both at the field and greenhouse levels, the presence of 7 tons ha−1 of CC straw reduced amaranth emergence by up to 70% and did not interfere with the performance of pre-emergent herbicides. The low occurrence of Amaranthus facilitate control of HS and minimize the selection pressure for resistance exerted by herbicides on these weeds. For post-emergent weed management, the use of fomesafen + benazolin and, especially 2,4-D + ammonium glufosinate are effective options for managing resistant amaranth.

Effects of organic mulching and regulated deficit irrigation on crop water status, soil and yield features in an orange orchard under Mediterranean climate

The adoption of soil and water conservation measures (SWCM) is essential for improving the use of natural resources and making the agro-systems more resilient to climate change. In this context, a three-years trial was carried-out in an orange orchard characterized by different soil management (SM, i.e., bare and organic mulched soils) and water regimes (WR, i.e., full irrigation, FI, and regulated deficit irrigation, RDI). In response to the applied SWCM, crop water status (CWS), soil and yield main features were explored using multiple soil-plant-atmosphere continuum (SPAC) monitoring approaches.Overall average water saving of 24 % was achieved under RDI in comparison to FI. The stem water potential revealed a year-dependent behaviour in accordance to the patterns of the main ancillary physiological indicators. The adoption of additional plant-based measurements provided continuous information on the CWS, both in terms of trunk water potential (TWP) and sap flow fluxes, resulting in higher absolute values of TWP (−0.93 ± 0.01 MPa versus −0.83 ± 0.00 MPa) and lower transpiration rates (0.64 ± 0.00 mm d−1 versus 0.88 ± 0.01 mm d−1) in mulched compared to bare soils. The soil water content showed higher rates under mulched soils than in bare soil condition, both in FI (up to 15 %) and RDI (up to 27 %) at 0.75 m from the tree trunk to the inter-row. Soil temperature was lower in mulched soils under RDI. However, a great time-variability was observed for most of the soil physical-chemical variables under study. Nevertheless, the application of SWCM improved the yield over the years, resulting in higher fruit weights under mulched FI conditions.Finally, the study suggests that the adoption of SWCM can serve as an efficient strategy to enhance soil and yield features, highlighting the critical role of using SPAC methodological tools for monitoring the CWS at the field level.

Гігієна фізичних факторів навколишнього середовища: понад 60 років досвіду й погляд у майбутнє

Objective. The objective of the work was to evaluate the main achievements and outline the prospects for hygienic rationing of physical factors in populated areas of Ukraine. Materials and methods. Scientific reports, regulatory documents, guidelines and scientific publications were studied by the method of literature analysis. Results. Systematic studies on the hygienic assessment of physical factors – electromagnetic fields, noise and vibration – in populated areas are carried out at the State Institution O.M. Marzieiev Institute for Public Health of the National Academy of Medical Sciences of Ukraine for more than 60 years. The research is carried out in order to develop hygienic standards – the maximum permissible levels of physical factors, to develop protective measures to prevent the adverse effects of physical environmental factors on the health of the population. In recent years, some hygienic standards have been changed without conducting appropriate scientific research, some hygienic standards have not yet been developed. Conclusions. We have accumulated extensive, mostly unique, experience in performing work on hygienic regulation of physical environmental factors. With the development of technology, the levels of electromagnetic fields, noise and vibration continue to increase, which determines the priority of protecting public health from the adverse effects of these factors. Of course, the implementation of work on hygienic regulation of physical environmental factors should continue, because according to the outstanding hygienist, academician Alexander Nikitich Marzeev, whose name our scientific institution bears, the future belongs to us – to the hygiene. Keywords. Air ionization, electromagnetic fields, noise, vibration, hygienic regulation, exposure limits.

Multistakeholder Partnerships and the 2030 Agenda for Sustainable Development: Sources and Audiences of Self-legitimation in the Fields of Health and Climate

ABSTRACT The spread of global multistakeholder partnerships (MSPs) for the 2030 Agenda for sustainable development has generated significant expectations on policy synergies and transformative governance. This article contributes to the study of the current generation of MSPs by focusing on the self-legitimation attempts that MSPs undertake to justify their authority. We compare the self-legitimation claims of an MSP operating within the climate policy field (the Climate and Clean Air Coalition) to those of an MSP active in the health policy field (Universal Health Coverage 2030). Through an analysis of policy documents, meeting observations, and interviews, we identify how the audiences and key sources of self-legitimation differ between policy fields. We suggest complementary explanatory factors for these differences at the policy field level, the institutional level, and the level of global norms. We show that current MSP self-legitimation mirrors governance challenges stemming from all three levels, particularly with regard to vague mandates, limited resources, and accountability.

Performance evaluation of composite Vrindavani cattle in field conditions of Uttar Pradesh

The present study aimed to evaluate the performance of Vrindavani crossbred cattle under field conditions of Uttar Pradesh. The study was conducted in six tehsils of the Bareilly district, involving interviews with 201 respondents and covering a total of 554 animals. Data were collected through a semi-structured interview schedule. A one-way ANOVA was performed to find the statistical differences between the tehsils in the Bareilly district. The average lactation milk yield, lactation length, average milk yield per day, peak yield, and dry period of Vrindavani crossbred cows under field conditions was 2996.54±32.99 kg, 348.80±1.98 days, 8.64±0.10 kg, 13.34±0.17 kg, and 117.51±2.76 days, respectively. The age at puberty, age at first service, age at first calving, service period, number of services per conception, and calving interval averaged 611.36±9.71 days, 678.94±5.46 days, 1010.71±7.25 days, 171.90±2.63 days, 2.39±0.07, and 465.71±3.01 days, respectively. The average birth weight, and weight at 3 months, 6 months, and 12 months for Vrindavani crossbred calves were 21.17±0.07 kg, 45.76±0.25 kg, 80.79±0.44 kg, and 128.03±1.12 kg, respectively. The performance of Vrindavani crossbred cows was comparatively better than other crossbred cattle populations under field conditions. However, their performance in the field was lower as compared to organized farms. To improve the productivity of Vrindavani crossbreds further, a proper breeding policy should be implemented at the field level to ensure the propagation of Vrindavani crossbred semen. Additionally, improvements in non-genetic factors are necessary to achieve higher productivity.

Domain switching and shear-mode piezoelectric response induced by cross-poling in polycrystalline ferroelectrics

The mechanisms contributing to the electromechanical response of piezoelectric ceramics in the shear mode have been investigated using high-energy synchrotron x-ray diffraction. Soft lead zirconate titanate ceramic specimens were subjected to an electric field in the range 0.2–3.0 MV m−1, perpendicular to that of the initial poling direction, while XRD patterns were recorded in transmission. At low electric field levels, the axial strains remained close to zero, but a significant shear strain occurred due to the reversible shear-mode piezoelectric coefficient. Both the axial and shear strains increased substantially at higher field levels due to irreversible ferroelectric domain switching. Eventually, the shear strain decreased again as the average remanent polarization became oriented toward the electric field direction. The lattice strain and domain orientation distributions follow the form of the total strain tensor, enabling the domain switching processes to be monitored by the rotation of the principal strain axis. Reorientation of this axis toward the electric field direction occurred progressively above 0.6 MV m−1, while the angle of rotation increased from 0° to approximately 80° at the maximum field of 3.0 MV m−1. A strong correlation was established between the effective strains associated with different crystallographic directions, which was attributed to the effects of elastic coupling between grains in the polycrystal.

Graduate Employability in Malaysia: Analysing Students’ Level of Study and Fields of Study in Relation to their Employability

Graduate Employability in Malaysia: Analysing Students’ Level of Study and Fields of Study in Relation to their Employability

COMPUTER SIMULATION OF ELECTRICALLY CONDUCTING PROPERTIES OF MATERIAL FOR PERSONAL PROTECTION EQUIPMENT

The article presents an analysis of production factors that have a harmful effect on the health of workers. It has been established that one of the leading factors is an increased electrostatic field that occurs when a static charge accumulates on the surface of materials. An increased level of the electrostatic field can lead to various negative consequences for workers’ health. For full antistatic protection at work, not only special tools and workplaces are needed, but also special footwear made of conductive materials with high surface resistance, as well as other personal protective equipment. A computer model for simulating the occurrence and development of an electrical breakdown in a protective material for personal protective equipment is described. The model is based on energy concepts of the occurrence and development of a discharge, taking into account the statistical heterogeneity of the material’s electrical conductivity. The process of breakdown development is considered as a special case of the percolation effect and a branching random process. The model makes it possible to find a relationship between the heterogeneity of the material and the threshold of its protective properties.

An Alternative Approach for Evaluating Induced and Contact Currents for Compliance with Their Exposure Limits (100 kHz to 110 MHz) in IEEE Std C95.1-2019.

The Institute of Electrical and Electronics Engineers establishes exposure reference levels (ERLs) for electric fields (E-fields) (0-300 GHz) and both induced (IIND) and contact currents (ISC) (<110 MHz) in its standard, IEEE Std C95.1™-2019 (IEEE C95.1). The "classical" scenarios addressed in IEEE C95.1 include a free-standing, grounded "reference" person (IIND) or an ungrounded reference person in manual contact with an adjacent grounded conductor (ISC), each exposed to a vertically oriented E-field driving the currents. The ERLs for current from 100 kHz to 110 MHz were established to limit heating in the finger (from touch), ankle (IIND), and wrist (ISC from grasp contact), specifying the 6-min average specific absorption rate (SAR, W kg-1) as the dosimetric reference limit (DRL); whole-body E-field ERLs are 30-min averages. The DRLs were established assuming a default "effective" local cross-section (9.5 cm2) and consistent with a composite tissue conductivity of ~0.5 S m-1. A previous publication described the misalignment of the ERLs for E-fields with the ERLs for IIND (which extends to ISC) and also proposed a ramped E-field ERL from 100 kHz to 30 MHz. For the frequency range 100 kHz to 110 MHz, this paper proposes temperature increase (ΔT) in ankle and wrist as the preferred effect metric associated with IIND and ISC; applying the E-field ERLs as surrogates for limits to these currents; and adopting the proposed ramp. The analysis of ΔT is based on the tissue mix in realistic anatomic depictions of ankle and wrist cross-sections; relevant tissue properties posted online; published tissue perfusion data; and anthropometric data on a large sample of male and female adults in the US military, allowing an estimate of effects over a range of body size. To evaluate ΔT versus frequency and time, the Penne bioheat equation was adapted with convective cooling from arterial blood as the lone cooling mechanism. The analysis revealed that IINDs and ISCs induced by ERL-level E-fields produce SARs in excess of the local DRLs (in some cases far exceed). Calculations of time to ΔT of 5 °C, reflective of a potentially adverse (painful) response, resulted in worst-case times for effects in the ankle on the order of minutes but on the order of 10s of s in wrist. Thus, compliance with the E-field ERL, as assessed as a 30-min whole-body average is incompatible with the time course of potentially adverse effects in ankle and wrist from IIND and ISC, respectively. Further analysis of the relevant exposure/dose scenarios and consensus of stakeholders with a multi-disciplinary perspective will enable the development of a revised standard, practical from a compliance perspective and protective of all persons.

Leadership as a situated practice: Critical connections and liberated networks

Learning Development is founded on multidisciplinary partnerships and collaboration, which can make it difficult for practitioners to recognise leadership in themselves and have it recognised by others, stymieing progression and confidence. This study aims to explore what leadership looks like in a collaborative, community-driven, third space field of practice, and how Learning Development practitioners might recognise leadership in themselves and enact it in practice. Based on based on semi-structured interviews, a phenomenological approach is taken to explore the perceptions and experiences of 20 participants who self-identify as Learning Developers with an interest in leadership. Four key themes emerged from the analysis: Being in the role; Being part of a team; Being part of a community; and Taking a wider view. Each indicates how leadership in Learning Development is values-driven, social, networked, critical, and operates on the three levels of team, community, and field. The interrelationships between these are expressed as a model for strategic influence driven by collaborative connections, and findings suggest that practitioners act as a hub through which knowledge and connections can flow. Given the challenges currently facing the higher education sector, it is vital that institutions are able to harness these crucial roles to remain flexible, responsive, and effective. This study provides a means for recognition and advancement in fields that lack the clear progression routes of academic and professional services colleagues.

Numerical determination of the threshold magnetic field in superconducting strips and coils triggering dynamic resistance

Abstract The threshold magnetic field is a key parameter for evaluating the current decay caused by dynamic resistance in superconducting windings and magnets. For a DC-carrying superconducting slab under an AC parallel magnetic field, the analytical theory clearly shows that there is only one electric central line (ECL) across the slab width at the onset of dynamic-resistance. However, threshold magnetic fields in superconducting strips and coils have not been fully investigated. Based onthe one-ECL criterion, this paper first presents a method for numerically determining the threshold magnetic field via the evolving internal magnetic field in superconducting strips and coils. By probing transient electromagnetic behaviours, interestingly, we found a distinctive feature of superconducting strips in which a wide region of zero electrical field is observed when dynamic resistance/loss initially occurs. With increasing magnetic fields, this region gradually shrinks and eventually become the ECL. More importantly, this numerical method can analyse the local threshold magnetic field in a targeted coil turn. The ability to quantify threshold magnetic field provides a clear guidance on the acceptable level of ripple and harmonic magnetic fields for coil windings in superconducting maglev trains and field windings of superconducting machines operating at persistent current mode.&amp;#xD;

Electromagnetic exposure of population in three cities of Romania at four years difference, based on data recorded by the fixed national radiofrequency monitoring network

Abstract The blooming of wireless technologies and the deployment of the fifth generation (5G) of mobile communications have been accompanied by a significant increase in the risk perception related to human exposure to radio-frequency electromagnetic field (RF-EMF). Therefore, EMF monitoring has become necessary in areas with increased densification of the EMF sources. Present work made use of the raw data kindly provided by the National Authority for Management and Regulation in Communications (ANCOM) in Romania from the fixed EMF sensor network nationally deployed. We aimed to analyze the case of electric field level evolution after four years, in three cities. In each city a single monitoring station was chosen in the analysis. Database in the wide- and narrow-bandwidths covering the range (100 kHz – 7 GHz) was processed for whole years 2019 and 2023. Comparisons between locations and years were enabled by means of: a) descriptive statistics; b) time series analysis with Poincare plots for time-variability characterization; c) recurrence quantification analysis to emphasize the nonlinear dynamics of the exposure levels, respectively the recurring exposure levels dynamics. Similarities and dissimilarities were observed and discussed.