Sensitive Spot Research Articles

Effects of pyraclostrobin rotations and tank-mixtures on Cercospora beticola sensitivity and Cercospora leaf spot control in sugarbeet

Sugarbeet production supplies approximately 50–60% of domestic sugar in the United States. One of the most economically important foliar diseases of sugarbeet is Cercospora leaf spot (CLS), caused by Cercospora beticola. Fungicide resistance is a major concern due to the frequent applications needed to control multiple infection cycles each season and the reliance on single-site fungicides. Reduced C. beticola sensitivity to multiple fungicide groups, including the quinone outside inhibitors (QoIs) has been observed. The QoI fungicide Headline (23.6% pyraclostrobin) was exceptionally effective in controlling CLS until high levels of reduced sensitivity stabilized in C. beticola populations. This study aimed to test application programs to minimize C. beticola pyraclostrobin resistance development and maximize CLS management. Rotation (high- and low-risk) and tank-mixture programs integrating pyraclostrobin (Headline™) with mancozeb (a multi-site fungicide) treatments were evaluated in 2019 and 2020 field studies. For all Headline programs, distributions of C. beticola pyraclostrobin sensitivities were not significantly different from each other but differed from the non-treated control (P < 0.05). In 2020, a significant increase in the percentage of isolates with half-maximal effective pyraclostrobin concentrations ≥5 μg/ml was noted in all Headline treatments (P < 0.05), even where a single application of Headline alone was used. Furthermore, no additional CLS control, yield, or sugar benefits from Headline were observed when compared to grower standard programs without Headline (P > 0.05). In conclusion, pyraclostrobin-based products used in chemical rotations or tank-mixtures were not more beneficial than lower-risk programs despite their historical CLS control efficacy.

Delineation of Potential Groundwater Zones and Assessment of Their Vulnerability to Pollution from Cemeteries Using GIS and AHP Approaches Based on the DRASTIC Index and Specific DRASTIC

The risk of aquifer contamination is determined by the interaction between the pollutant load and the vulnerability of an aquifer. Owing to the decomposition of bodies and degradation of artefacts, cemeteries may have a negative impact on groundwater quality and suitability for use due to the leaching of organic compounds (e.g., biodegradable organics, pharmaceuticals, and formaldehyde), inorganic compounds (e.g., nitrate and heavy metals), pathogenic bacteria, and viruses. Factors such as burial and soil type, rainfall amount, and groundwater depth may increase aquifer vulnerability to pollutants generated in cemeteries. The potential for groundwater contamination was investigated in two cemeteries of the Soure region in Portugal (Samuel–UC9 and Vinha da Rainha–UC10), using the classic DRASTIC model, followed by some adjustments, depending on the particularities of the locations, resulting in a Final Classification considered as Specific DRASTIC. By combining Remote Sensing (RS), Geographic Information System (GIS), and Analytical Hierarchy Process (AHP), groundwater potential zones (GWPZs) were identified, and aquifer vulnerability was assessed, which included the elaboration of thematic maps using GIS operation tools. The maps allowed for the identification of areas with different susceptibilities to contamination: from “Low” to “Very high” for the DRASTIC index and from “Very Low” to “Very high” for the Specific DRASTIC index. Although the difference between the UC9 and UC10 cemeteries is negligible, UC10 is more vulnerable because of its proximity to the community and critically important mineral water resources (such as Bicanho Medical Spa). The Specific model seems better-suited for describing vulnerability to cemeteries. Although there is limited groundwater quality data for the area, the development of vulnerability maps can identify areas that can be sensitive spots for groundwater contamination and establish procedures for pollution prevention.

Contaminant Spot Check and Removal Assay (ContamSPOT) for Mass Spectrometry Analysis.

Mass spectrometry (MS) analysis is often challenged by contaminations from detergents, salts, and polymers that compromise data quality and can damage the chromatography and MS instruments. However, researchers often discover contamination issues only after they acquire the data. There is no existing contaminant assay that is sensitive enough to detect trace amounts of contaminants from a few microliters of samples prior to MS analysis. To address this crucial need in the field, we developed a sensitive, rapid, and cost-effective contaminant spot check and removal assay (ContamSPOT) to detect and quantify trace amounts of contaminants, such as detergents, salts, and other chemicals commonly used in the MS sample preparation workflow. Only 1 μL of the sample was used prior to MS injection to quantify contaminants by ContamSPOT colorimetric or fluorometric assay on a thin layer chromatography (TLC) plate. We also optimized contaminant removal methods to salvage samples with minimal loss when ContamSPOT showed a positive result. ContamSPOT was then successfully applied to evaluate commonly used bottom-up proteomic methods regarding the effectiveness of removing detergent, peptide recovery, reproducibility, and proteome coverage. We expect ContamSPOT to be widely adopted by MS laboratories as a last-step quality checkpoint prior to MS injection. We provided a practical decision tree and a step-by-step protocol with a troubleshooting guide to facilitate the use of ContamSPOT by other researchers. ContamSPOT can also provide a unique readout of sample cleanliness for developing new MS-based sample preparation methods in the future.

Overview on Juvenile Primary Fibromyalgia Syndrome

JPFS (juvenile primary fibromyalgia syndrome) is a musculoskeletal pain illness that affects children and adolescents. The intricacy of the clinical picture in JPFS has not been adequately characterized in the literature. JFMS symptoms are sometimes difficult to compare to adult fibromyalgia syndrome since many of them are "medically unexplained" and frequently overlap with other medical disorders. The etiology of the illness is multifaceted, with impaired central pain processing being a significant contributor. Musculoskeletal pain that is severe and pervasive is the defining symptom. Other signs and symptoms include headaches, stiffness, subjective joint swelling, sleep and mood disorders, and headaches. Multiple sensitive spots might be found during a physical examination. The diagnosis has certain criteria and is clinical. Early detection and treatment are crucial. The gold standard of care combines a variety of modalities, but most significantly, exercise and cognitive behavioral therapy. The outlook varies, and symptoms might last well into adulthood. Discussing the epidemiology, etiology, pathophysiology, clinical symptoms, diagnosis, and management of JPFS is the goal of the review.

Comparative Study of Efficacy Between Platelet-Rich Plasma vs Corticosteroid Injection in the Treatment of Lateral Epicondylitis

Background: Lateral epicondylitis, commonly known as "tennis elbow," is a painful condition affecting the tendons on the outer part of the elbow. Managing lateral epicondylitis is essential to relieve discomfort and improve the patient's quality of life. Various treatment options are available for lateral epicondylitis, including Platelet-Rich Plasma (PRP) therapy and corticosteroid injections. The technique if proved better in pain control would be later on preferred as it will contribute significantly to reduce indoor patient burden, earlier recovery of patients and to their overall satisfaction. Objective: To assess and comparative effectiveness of corticosteroid injections with platelet-rich plasma injections in the management of lateral epicondylitis. Study Design: Randomized controlled trial (RCT). Settings: Department of Orthopedic Surgery, PIMS, Islamabad Pakistan. Duration: From December 2019 to May 2020. Methods: Overall, 162 adult patients having clinical features of chronic lateral epicondylitis unilateral/bilateral not responding to conservative management of either gender with age between 18-60 years were included. Patients were randomly assigned into two intervention groups. Patients of Group A underwent local steroid injections, while Group B received platelet-rich plasma (PRP) injections. Patients of the PRP group, were administered 2 mL of PRP, derived from their own blood, at the most sensitive spot on the lateral epicondyle. Patients of the steroid group, were given 2 mL of methylprednisolone (40 mg/mL). Following the injections, patients were instructed to rest for 15 minutes and advised against massaging the treated area. VAS score was calculated at baseline before giving treatment in both groups and was subsequently assessed at 6th week, 3rd month and 6th month post therapy. VAS score was compared in both groups at different time intervals using student-t test for independent samples. Results: Mean age in group A was 47.4 ± 7.5 years and in group B was 48.1 ± 8.2 years. In group A, 56.8% of the participants were males, and 43.2% were females, whereas in group B, 54.3% were males, and 45.6% were females. Baseline average score of VAS was almost equal among both groups at baseline (7.69 ± 1.03 and 7.74 ± 1.06) in group A and B respectively. At 6th weeks, average score of VAS in steroid group was 3.7 ± 1.79 and in PRP group was 3.23 ± 2.05 (P=0.440). At 3 months, average score of VAS in steroid group was 2.73 ± 1.48 and it was 2.53 ± 1.82 SD in PRP group (P=0.451). At 6 months, VAS average score was noted significantly decreased 2.11±1.29 compared to steroid group was 4.83 ± 2.11 (P=0.001). Conclusion: The study revealed that PRP injections are more effective than local steroid injections for chronic lateral epicondylitis. Initial VAS scores were similar for both treatments up to three months, but PRP showed significantly better results at the 6-month follow-up, indicating its long-term effectiveness.

Applying smartphone camera, spectrophotometry, or ocular analysis-based dipsticks for the detection of glutathione level as a cancer biomarker

This study provides simple sensitive and selective spot tests and spectrophotometric methods for quantifying l-glutathione (GSH) as a cancer biomarker. The dipsticks are based on filter paper containing a Cu(II)-murexide complex which was prepared in phosphate buffer pH 6.0 and then incorporated inside a filter paper matrix. On addition of GSH, the spots' color progressively changed from yellow to orange through pink to violet before gradually vanishing. The indicator is released when GSH is injected because GSH displaces murexide dye from the murexide-Cu2+ complex. This enables the determination of glutathione in human serum visually using the reflectometric Red-Green-Blue (RGB) interpretation of the dipstick image data. In the spectrophotometric method, the Cu2+-murexide complex absorbance band is gradually red-shifted upon interaction with different concentrations of glutathione due to the displacement reaction.Glutathione can be determined from 0.01 to 500 μg mL−1 visually and from the evaluation of the smartphone images. The limit of detection for glutathione determination using dipsticks is 0.01 μg mL−1, which is the lowest value to date. This technique has been successfully used with positive outcomes to identify low concentrations of glutathione in samples of human serum.

Plasmonic Coupling of Au Nanoclusters on a Flexible MXene/Graphene Oxide Fiber for Ultrasensitive SERS Sensing.

High sensitivity, good signal repeatability, and facile fabrication of flexible surface enhanced Raman scattering (SERS) substrates are common pursuits of researchers for the detection of probe molecules in a complex environment. However, fragile adhesion between the noble-metal nanoparticles and substrate material, low selectivity, and complex fabrication process on a large scale limit SERS technology for wide-ranging applications. Herein, we propose a scalable and cost-effective strategy to a fabricate sensitive and mechanically stable flexible Ti3C2Tx MXene@graphene oxide/Au nanoclusters (MG/AuNCs) fiber SERS substrate from wet spinning and subsequent in situ reduction processes. The use of MG fiber provides good flexibility (114 MPa) and charge transfer enhancement (chemical mechanism, CM) for a SERS sensor and allows further in situ growth of AuNCs on its surface to build highly sensitive hot spots (electromagnetic mechanism, EM), promoting the durability and SERS performance of the substrate in complex environments. Therefore, the formed flexible MG/AuNCs-1 fiber exhibits a low detection limit of 1 × 10-11 M with a 2.01 × 109 enhancement factor (EFexp), signal repeatability (RSD = 9.80%), and time retention (remains 75% after 90 days of storage) for R6G molecules. Furthermore, the l-cysteine-modified MG/AuNCs-1 fiber realized the trace and selective detection of trinitrotoluene (TNT) molecules (0.1 μM) via Meisenheimer complex formation, even by sampling the TNT molecules at a fingerprint or sample bag. These findings fill the gap in the large-scale fabrication of high-performance 2D materials/precious-metal particle composite SERS substrates, with the expectation of pushing flexible SERS sensors toward wider applications.

Ecological Sensitivity Evaluation and Explanatory Power Analysis of the Giant Panda National Park in China

The Giant Panda National Park (GPNP) is one of the first national parks established in China, and the consideration of its ecological sensitivity is an important part of the construction of ecological civilization. Taking GPNP as a case, the ecological sensitivity evaluation model of the national park was constructed on the basis of the sensitivity evaluation results of regional terrain, climate, vegetation, animal trace, landscape resource, water resource and human activity. The CRiteria Importance Through Intercriteria Correlation (CRITIC) method was introduced to obtain the comprehensive spatial distribution characteristics of ecological sensitivity, and the spatial autocorrelation analysis and explanatory factor analysis were carried out in order to provide specific suggestions for the ecological development and protection of the national park. The results showed that the ecological sensitivity gradually increases from the regional edge to the center, and the area is 12.36%, 28.24%, 31.94%, 21.56%, and 4.76%, respectively. The Moran's I of ecological sensitivity is 0.914, showing a high spatial autocorrelation in the region. The sensitive cold spots are distributed in the north, and the hot spots are distributed in the middle and south. In the case of ecological governance, priority can be given to these high value cluster areas. Human activities are the main explanatory factors for ecological sensitivity, and the sensitivity of a certain region can be influenced by positive human behavior. The interaction of most factors in pairs will enhance the explanatory power of a single factor on ecological sensitivity, which means that multiple methods of ecological protection will achieve better results. The research results of this paper provide a scientific basis for guiding the management and protection of ecologically sensitive zones in the study area.

Preparatory Brain Activity and Anticipatory Postural Control in Cervical Myofascial Trigger Point

Introduction: Neck pain is a highly prevalent disorder in developed countries. A myofascial trigger point (MTrP) is distinguished under the name of the fundamental excessive menstruation for it and certain reason for musculoskeletal dysfunction. MTrP refers to a sensitive spot in a taut band whose stretch and compression can induce pain. Modifications in the motor cortex, sensory input, irritability, and integration are the adaptive mechanisms to pain. Accordingly, this study aimed to investigate the preparatory brain activity and anticipatory postural control in chronic neck pain.&#x0D; Materials and Methods: The study participants included 25 women with an active MTrP in the upper trapezius muscle and 25 healthy women in the control group. We recorded the brain activities from Cz, Pz, and Fz regions and muscle activities of both sides of the upper trapezius, anterior deltoid, cervical and lumbar paraspinal, sternocleidomastoid, and medial head of the gastrocnemius. The participants had to flex their arms in reply to the second sound stimulus, followed by the first sound. Then, their reaction time and brain activity were evaluated.&#x0D; Results: Significant differences between the two groups were detected in brain activities’ measurements and the onset of muscle activation (P&lt;0.001). The exception was the onset of gastrocnemius muscle activation (P&gt;0.05).&#x0D; Conclusion: The current study suggests that active MTrP induces latency and lengthens the muscle reaction time; thus, the production of suitable motion after the stimulus will be affected. Brain alteration after pain damages movement changes and postural control mechanism.

Donor acceptor groups effect, polar protic solvents influence on electronic properties and reactivity of 2-Chloropyridine-4-carboxylic acid

The computational reckoning of 2-Chloropyridine-4-carboxylic acid (2CP4CA) was accomplished employing DFT/B3LYP with the root set as 6–311++G(d, p). The impact of polar protic solvents which are eco-friendly solvents (water, methanol, ethanol, 1-propanol) on 2CP4CA were analysed. To examine the solvent effect, vibrational investigations and NLO reports of 2CP4CA in dissimilar solvents were executed. Geometrical properties were also established in gas phase for 2CP4CA. Exercising VEDA program, the entire vibrational assignment was accomplished. Donor-acceptor exchanges were ascertained utilizing NBO scrutiny technique. Thermodynamic properties of 2CP4CA were analysed at different temperatures. By applying TD - DFT approach, theoretic UV–Vis absorption spectrum was procured in different solvents. In order to evaluate the complete electron concentration and sensitive spots of 2CP4CA, MEP coupled with FMO analyses were employed. HOMO along with LUMO orbitals and energy band gap were acquired for 2CP4CA employing dissimilar polar protic solvents. Additionally, ELF, LOL and charge transfer studies were also executed. RDG analysis has been exercised for revealing non-covalent interactions.

Self-Assembled Highly Sensitive Hybrid Structure Sensor for Vector Curvature and Temperature Measurement

A highly sensitive hybrid structure sensor based on suspended-core fiber (SCF) is proposed for vector curvature and temperature measurement. The sensor is prepared by self-assembly of SCF-based cascaded Fabry-Perot interferometer (cFPI), single-mode fiber (SMF), and fiber Bragg grating (FBG). In view of the asymmetry of the cFPI, theoretical analysis of the beam transmission and spectral characteristics is implemented when the beam is incident from different directions. The two sensing fibers in the triangular distribution sensor will not be located on the neutral plane at the same time, which makes it possible to measure bending in any orientation. The Vernier effect formed by the cFPI enlarges the curvature and temperature sensitivity to −1064.5 pm/m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−1</sup> and 50.7 pm/°C, respectively, without affecting the measurement range. The spectrum shows the opposite spectral response when the sensor bending direction difference is 180°. The sensor overcomes the bottleneck of bending sensitive blind spots in dual-fiber sensing. In addition, the sensor maintains a smaller size and more flexible preparation, which is conducive to its application in artificial intelligence, medical detection.

An Optimized 2 MHz Unilateral Magnet with a Large Homogeneous Sensitive Spot

An Optimized 2 MHz Unilateral Magnet with a Large Homogeneous Sensitive Spot

Assessment of Quinone Outside Inhibitor Sensitivity and Frogeye Leaf Spot Race of Cercospora sojina in Georgia Soybean.

Frogeye leaf spot (FLS), caused by the fungal pathogen Cercospora sojina K. Hara, is a foliar disease of soybean (Glycine max L. [Merr.]) responsible for yield reductions throughout the major soybean-producing regions of the world. In the United States, management of FLS relies heavily on the use of resistant cultivars and in-season fungicide applications, specifically within the class of quinone outside inhibitors (QoIs), which has resulted in the development of fungicide resistance in many states. In 2018 and 2019, 80 isolates of C. sojina were collected from six counties in Georgia and screened for QoI fungicide resistance using molecular and invitro assays, with resistant isolates being confirmed from three counties. Additionally, 50 isolates, including a "baseline isolate" with no prior fungicide exposure, were used to determine the percent reduction of mycelial growth to two fungicides, azoxystrobin and pyraclostrobin, at six concentrations: 0.0001, 0.001, 0.01, 0.1, 1, and 10 μg ml-1. Mycelial growth observed for resistant isolates varied significantly from both sensitive isolates and baseline isolate for azoxystrobin concentrations of 10, 1, 0.1, and 0.01 μg ml-1 and for pyraclostrobin concentrations of 10, 1, 0.1, 0.01, and 0.001 μg ml-1. Moreover, 40 isolates were used to evaluate pathogen race on six soybean differential cultivars by assessing susceptible or resistant reactions. Isolate reactions suggested 12 races of C. sojina present in Georgia, 4 of which have not been previously described. Species richness indicators (rarefaction and abundance-based coverage estimators) indicated that within-county C. sojina race numbers were undersampled in this study, suggesting the potential for the presence of either additional undescribed races or known but unaccounted for races in Georgia. However, no isolates were pathogenic on 'Davis', a differential cultivar carrying the Rcs3 resistance allele, suggesting that the gene is still an effective source of resistance in Georgia.

The House Is on Fire but We Kept the Burglars Out: Racial Apathy and White Ignorance in Pandemic-Era Immigration Detention

Past research shows that crises reveal the sensitive spots of established ideologies and practices, thereby providing opportunities for social change. We investigated immigration control amid the pandemic crisis, focusing on potential openings for both challengers and proponents of immigration detention. We asked: How have these groups responded to the pandemic crisis? Have they called for transformative change? We analyzed an original data set of primary content derived from immigrant advocates and stakeholders of the immigration detention industry. We found as the pandemic ravaged the world, it did not appear to result in significant cracks in the industry, as evidenced by the consistency of narratives dating back to pre-pandemic times. The American Civil Liberties Union’s (ACLU) criticisms of inhumane conditions in immigration detention resembled those from its pre-pandemic advocacy. Private prison companies, including CoreCivic and GEO Group, emphasized their roles as ordinary businesses rather than detention managers during the pandemic, just as they had before the crisis. U.S. Immigration and Customs Enforcement (ICE), however, manufactured an alternative storyline, emphasizing “COVID fraud” as the real threat to the “Homeland.” Although it did not call for radical change, it radically shifted its rhetoric in response to the pandemic. We discuss how these organizations’ indifference towards structural racism contributes to racial apathy and how the obliviousness and irresponsibility of industry stakeholders resembles white ignorance.

Shield pattern and scattering reduction scheme using impedance surfaces

Controlling surface waves is critical to prevent damage to sensitive spots on the surface or to minimize interference with other systems. In this paper, a shield pattern generated by the point shifting method is introduced and extended to the use of scattering reduction schemes for apertures. Impedance surfaces for the shield patterns have smooth impedance transition between high and low impedances, which enable reduced scattering. The shield pattern is also used to minimize leakage of the surface waves from the aperture. The scattering reduction scheme for apertures was simulated and verified by the measurements as well.

TRANSITION TO ORGANIC AGRICULTURE IN MOROCCO

Agriculture is a vital sector in Morocco; it contributes 13% to the gross domestic product and employs around 30% of the total workforce and 70% in the rural areas. This puts agriculture in a sensitive spot where it affects the livelihoods of a great proportion of the population. Moroccan agricultural development programs (viz. Green Morocco Plan 2008-2019 and Green Generation 2020-2030) aim to enhance the livelihoods of farmers by focusing on the valorisation of small farms and rural areas through the development of protected geographic indications (PGI), cooperatives, and organic farming. This review paper describes the dynamics and development process of the organic agriculture niche in Morocco through the lens of the Multi-Level Perspective (MLP) on socio-technical transitions. The MLP is a widely used framework that bases its analysis on transitions being the result of the interaction of niches, socio-technical regimes, and socio-technical landscape. Niches represent novelties, regimes are the incumbent and dominant systems, and the landscape includes the external factors that affect both regimes and niches and shape their development. Results show that although the organic niche is well established (11,000 ha of organic land area in 2019), it is still developing at a slower rate than expected. While organic farming does solve many sustainability challenges that Moroccan agriculture faces, it still lacks the infrastructure and human capital to succeed as a niche. All in all, organic farming is still in the first transition stages and can follow a multitude of pathways before becoming relevant in the current agri-food system.

Automated Crystal Orientation Mapping by Precession Electron Diffraction-Assisted Four-Dimensional Scanning Transmission Electron Microscopy Using a Scintillator-Based CMOS Detector

The recent development of electron-sensitive and pixelated detectors has attracted the use of four-dimensional scanning transmission electron microscopy (4D-STEM). Here, we present a precession electron diffraction-assisted 4D-STEM technique for automated orientation mapping using diffraction spot patterns directly captured by an in-column scintillator-based complementary metal-oxide-semiconductor (CMOS) detector. We compare the results to a conventional approach, which utilizes a fluorescent screen filmed by an external charge charge-coupled device camera. The high-dynamic range and signal-to-noise characteristics of the detector greatly improve the image quality of the diffraction patterns, especially the visibility of diffraction spots at high scattering angles. In the orientation maps reconstructed via the template matching process, the CMOS data yield a significant reduction of false indexing and higher reliability compared to the conventional approach. The angular resolution of misorientation measurement could also be improved by masking reflections close to the direct beam. This is because the orientation sensitive, weak, and small diffraction spots at high scattering angles are more significant. The results show that fine details, such as nanograins, nanotwins, and sub-grain boundaries, can be resolved with a sub-degree angular resolution which is comparable to orientation mapping using Kikuchi diffraction patterns.

Effect of Chemo-radiotherapy on Salivary Flora of Oral Cancer Patients

Management of cancers of oral cancers has remained a major challenge in India and globally. Radiotherapy and chemotherapy are mostly employed for treatment which inflicts changes in oral mucosa and makes it vulnerable for bacterial colonization and eventual infections. This study aims at evaluating the changes in oropharyngeal flora (bacteria and yeast) in oral cancer patients treated by a combination of chemo-radiotherapy with the control groups comprising of non-cancerous patients living in the same environment. This prospective evaluation included Seventy-seven patients with oral squamous cell carcinomas in the study group. Whereas the control group comprised of twenty-five non-cancerous patients. Saliva samples were collected from patients with oral carcinomas and those of the control group for bacteriological examination, and were transported within 2 hours to the laboratory and immediately inoculated and incubated. The oral microflora samples collected were evaluated for the presence of bacteria in saliva in both study and control group of patients. We evaluated the change in salivary oral flora during chemo-radiotherapy treatment. A statistically significant increase in growth of normal as well as abnormal oral flora was observed post-radiation. Escherichia coli showed a significant decrease in post-RT and also near to significant in control. Various changes in salivary oral flora were observed during the course of chemo-radiotherapy in study and controls groups. This shows that there are some sensitive spots in the oral cavity where the occurrence of oral cancer is more.

DRIVERS' SPEED BEHAVIOUR IN THE VICINITY OF ADDITIONALLY ILLUMINATED PEDESTRIAN CROSSINGS

The probability and severity of accidents at pedestrian crossings strongly depend on vehicles’ speed; hence, drivers’ speed control and awareness of driving conditions are very important. Lighting installations in the transition areas of pedestrian crossings have been set up in Polish cities in recent years to improve the visibility of pedestrian crossings and enhance drives’ awareness while approaching sensitive spots in the road network. A key study focus is to evaluate the influence of additional lighting systems on drivers’ behaviour in terms of travel speed. Drivers’ speed measures were carried out under daytime and nighttime conditions on single carriageways. Speed measurements were performed in free flow driving conditions in the vicinity of zebra crossings located in mid-block segments and at intersection inlets. The analyses conducted have shown an ambiguous influence of lighting installations on drivers’ behaviour. It has been found that drivers approaching pedestrian crossings with additional illumination systems decrease their speed significantly, but average speeds, even reduced, remain over posted speed limits. Moreover, at zebra locations, drivers’ speed under night conditions in some cases was found to be significantly higher than during the day. Based on the results obtained, some recommendations have been made to improve drives’ speed behaviour at pedestrian crosswalks.

The crisis of Neoliberal project of aging during the COVID-19 pandemic: from compulsory activity to mandatory isolation

PurposeThis paper aims to consider how the situation of the COVID-19 pandemic questions the neoliberal project of ageing, based on a notion of a healthy, active, working older person. A long-term struggle to include older people has been (temporarily) replaced with a struggle to exclude them. This seems to be one of the most sensitive sore spots of the coronavirus crisis and one of the most serious challenges to social policy and welfare systems the world over. The purpose of this paper is to consider where the concepts of ageing and the action on ageing were at right before the crisis and what their further development may look like.Design/methodology/approachThis paper provides a critical overview of main conceptions based on the neoliberal project of ageing.FindingsThe main principle of the neoliberal project of ageing, which had been formed on the crossroad of social theory and policy through decades, became vulnerable in the face of COVID-19 pandemic. The new forced ageing reveals its repressive nature through ensuring seniors’ safety from exposure, their removal from work and isolation. The theory now faces new challenges of meshing a neoliberal actor – active, independent and productive – with an older person in isolation, who needs safeguarding, of re-conceptualizing social exclusion of seniors in a situation where exclusion is equated with safety, of resolving a dilemma between isolation and respect of human rights and of keeping progress in anti-ageism.Research limitations/implicationsThis paper presents an overview of the main conceptions, underlying the neoliberal project of ageing. It aims to designate the vulnerabilities of the project, which were revealed under the situation of pandemic. Further development of the discussion needs detailed analysis of theoretical conceptions of ageing.Practical implicationsTheoretical debate reflects policy of ageing. Discussion of theoretical problems of ageism, social exclusion, safeguarding of the elderly and compulsion are necessary for improvement of social policy of ageing.Social implicationsWhen the neoliberal project of ageing comes into collision with the reality with the reality, the authors recognize it as a crisis. It moves the society, and especially the elderly, to the situation of uncertainty. This paper calls for discussion and search for a new balance among the generations in a society.Originality/valueThis paper relies upon the current debate on neoliberal project of ageing and responds immediately to the situation of pandemic. Now conceptual problems in theories of ageing and policy projects became visible, and the authors suppose it is time to initiate this discussion.