Regular Work Research Articles

Enhancing supervisory relationships with values and committed action training

This study evaluated the effect of behavioral skills training (BST) combined with values and committed action training on the development of supervisory relationship skills in behavior analysts. A concurrent multiple baseline design across participants was used to evaluate the acquisition of skills such as sharing personal values, giving and seeking feedback, and tracking and documenting goals and actions. In addition, the impact of training on pre- and post-measures of burnout, self-compassion, ACT knowledge, and valued living was also evaluated. Results indicated that all participants achieved mastery on the supervisory relationship task analysis and increased overall ACT knowledge. In addition, there were improvements in self-reported risk of burnout, self-compassion, and valued living. Participants indicated that the training was a socially valid intervention for newly certified applied behavior analysts and reported increasing their use of these skills in their regular clinical work. Future applications and recommendations for integrating values and committed action into behavior-analytic supervision are discussed.

S1480 Clinical Burden of Electronic Health Record Use Amongst Gastroenterology Providers Associated With Differences in Sex, Provider Subspecialty, and Provider Training

Introduction: The electronic health record (EHR) has increased time spent outside of face-to-face encounters, with higher EHR burden associated with differences in provider sex, specialty, and rates of burnout. However, the EHR burden specific to gastroenterology (GI) providers is not fully understood. Methods: Measures of EHR use calculated through Epic Systems were retrospectively collected for GI providers from a tertiary referral center during a 6-month period starting January 1, 2021. Primary measures used to characterize EHR use included time spent performing clinical review, documentation, and in-basket management as well as quantification of efficiency, messaging, and time logged into the EHR, including time outside regularly scheduled hours (5:30 p.m. to 7:00 a.m. and weekends). EHR use patterns were compared across provider sex, sub-specialty (inflammatory bowel disease [IBD], motility/irritable bowel syndrome, advanced endoscopy [AE], and esophagus [ESO]), and training (physician vs non-physician provider [NPP]). Data was analyzed in aggregate using t-tests and analysis of variance with post-hoc Boniferri correction. Results: Data from 33 providers compromising 3,743 clinic days and 16,572 appointments was collected. Overall, 69.7% (23/33) were physicians, 30.3% (10/33) NPPs and 48.5% (16/33) were women, with women comprising all NPPs. Comparing EHR burden across sexes, women spent more daily time in clinical review than men (42.4 minutes vs 26.0, P = 0.02), though this result lost statistical significance when excluding NPPs. Comparing sub-specialties, IBD specialists spent more daily time in clinical review per appointment than AEs or ESOs (13.7 minutes vs 3.9 and 3.7, respectively; P < 0.001) yet had higher efficiency scores compared to these sub-specialties (P < 0.001). Compared to AEs, IBD specialists spent more overall daily time in the EHR (131.5 minutes vs 39.7, P < 0.005) as well as more daily time outside of regular work hours (60.0 minutes vs 8.9, P < 0.01). Comparing provider training, NPPs spent more daily time in the in-basket (P = 0.03), clinical review (P = 0.02), and overall EHR (P < 0.001) than physicians. Additionally, NPPs received more patient medical advice request messages per day than physicians (P = 0.03). Conclusion: IBD specialists and NPPs have an increased EHR burden. More work is needed to better understand sex, sub-specialty, and training-based differences in workload to combat factors contributing to provider burnout.

Neubau Bahnstromkraftwerk Obervellach II

AbstractIn the interests of climate protection, ÖBB Infrastruktur AG traditionally focuses on the sustainable use of hydro‐electric power for the generation of traction current for the railways. After about 100 years in service, the existing Obervellach I and Lassach power stations will be replaced by the more efficient new Obervellach II and Kaponig plants. With an increased output of 38 MW and a regular working capacity of 125 GWh per year, around 30,000 high speed journeys from Villach to Vienna will be possible.The challenges in the course of the submission, tender and project planning were the complexity of the project and its size. In particular, the hydraulic, geographical, geological and ecological conditions required cross‐disciplinary cooperation in all phases of the planning. Likewise, close coordination between the contractor and the local construction supervision took place and continues to take place in the course of the project.The vastness of the project area requires sophisticated logistics in its execution. The tunnelling work, in particular, was challenging due to the small cross‐section to be excavated and the tunnel length. A special feature is the use of a full‐round formwork carriage. During the work along the high pressure down pipe in impassable terrain, using a cableway for carrying material, the focus is on the parallel health and safety arrangements in the construction and equipment activities. The whole project is planned to be commissioned in March 2024.

ҚАЗАҚСТАНДАҒЫЗАЙЫРЛЫ БІЛІМ БЕРУ ЖҮЙЕСІНІҢҚАЛЫПТАСУЫЖӘНЕ АҒАРТУ ХАЛЫҚ КОМИССАРИАТЫ

The article considers the radical changes in the field of education, which began with the establishment of Soviet power in Kazakhstan, the role of the People's Commissariat of Education of Kazakhstan in the active implementation of the secular education system. The People's Commissariat for Education raises the issue of decisions and concrete work plans to address pressing issues such as school construction, textbooks and staff shortages in line with the secular education system in Kazakhstan. The article analyzes the positions of the Bolsheviks, who supported the introduction of a secular education system in Kazakhstan, and their views, such as ignoring the continuity of national ideology and educational traditions.In particular, the operation of madrassas operating on Kazakh soil before the October Revolution was banned and considered restricted as a religious education.Similar restrictions were applied to Russian-tolerant schools that began to operate under Tsarist Russia.It is no secret that the secular education system has manyadvantages. However, his first difficulties in Kazakhstan were many.It was especially closely connected with the inability of the Kazakh people to mobilize their children for regular school work due to their nomadic pastoralism. There was also a high demand for textbooks in the Kazakh language and specialists with special education. It was the People's Commissariat for Education that resolved these pressing issues and ensured the regularity of work in this area.

Using online tools Quizlet and WordWall to form foreign lexical competence of undergraduate students

Introduction. Professional training of undergraduate students majoring in foreign language teaching requires special attention to the formation and development of the lexical competence in foreign languages which is seen as an integral part of professional competence of a language teacher. However, over the last couple of years instruction in foreign languages has had to transform into partial or full-time online format. Such conditions call for all participants of the educational process to adjust their approaches to realizing competency-based teaching and developing new digital competences. The article researches the structure of the lexical competence, formulates challenges which arise while working with lexis during lessons with undergraduate students, majoring in foreign language teaching as well as describes the content of the digital competence of foreign language teachers.The formation of the lexical competence can be optimized by integrating online tools which not only facilitate memorizing new lexis but also maintain and foster students’ motivation to learning foreign languages. There are 2 online tools that could be used in foreign language classes – Quizlet and WordWall. Furthermore, the article determines the role of online tools in teaching new lexis, suggests ways of working with them and points out a mutual benefit between regular work with online tools and development of the digital competence of future teachers of foreign languages.Materials and Methods. Аpplication of online tools Quizlet and WordWall in English and German classes, conducting a survey and feedback analyses, summarizing and interpretation of the collected dataResults. А list of referenced sources that were collected during the research includes 30 Russian and foreign sources. This reference list made it possible to look into the structure of the foreign lexical and digital competences and thus it enabled the researchers to investigate how to form the lexical competence by means of online tools.Discussions and Conclusions. The survey has concluded effectivity of using online tools Quizlet and WordWall in forming foreign lexical competence of undergraduate students and proved their productivity in organizing students’ independent work and development of the digital competence.

A methodology for scheduling within‐day roadway work zones using deep neural networks and active learning

AbstractCity infrastructure agencies routinely implement road projects that address various elements of urban infrastructure. The majority of these projects are short‐term in nature (e.g., utility repair), as they are completed in a few hours within 8:00 a.m. to 5:00 p.m. of a workday. The implementation of these projects during working hours, in spite of the inconvenience imposed on road users, helps the agency avoid extra labor costs associated with nonregular working hours. Careful scheduling of these projects can prevent unduly increased travel delays (road users’ interest) while keeping project costs low (the agency's interest). This study presents a bi‐level framework for scheduling short‐term urban road projects that analyzes the implicit tradeoffs between the two stakeholders’ interests. The upper‐level model establishes the optimal schedule considering the project characteristics, such as cost and duration. The lower‐level model captures the dynamic user equilibrium conditions that yield the road users’ path and departure time choices. The bi‐level model is a mixed‐integer program with nonlinear constraints. Recognizing the relatively low efficiency of traditional solution methods, this paper proposes a deep‐neural‐network‐ensemble‐assisted active learning (DN2EA2L) algorithm and adopts a fixed‐point algorithm for solving the bi‐level model. The numerical experiment uses the Sioux Falls network to demonstrate the efficiency of the DN2EA2L, compared to conventional metaheuristic methods. It is shown that travel time increases due to the project implementation during the peak hours can outweigh the agency's saving in wage costs. Further, it is shown that a significant reduction in the road users’ value of time enables the agency to schedule more projects during regular working hours.

Objectively-assessed physical activity and heat stress and the association with kidney function in female harvest workers in Spain

BACKGROUND AND AIM: Physical activity (PA) in hot environments has been associated with kidney damage. In harvest workers, PA has been primarily assessed by questionnaires in males. We aimed to study the association between objectively-measured PA intensity and incidence of acute kidney injury (AKI) over the course of one work shift, in female harvest workers in Spain. METHODS: Ninety women working in greenhouses wore a Zephyr chest harness to measure PA intensity during one regular work shift in June 2020. We determined the mean (PA_mean), standard deviation (PA_sd), and 3-minute-maximum (PA_max, a proxy of peak PA intensity) of PA intensity (vector magnitude units). We estimated heat stress (HS) in greenhouses based on wet bulb globe temperature index (ISO 7243:2017). Serum creatinine and neutrophil gelatinase associated lipocalin (NGAL) levels were measured before and after the work shift. AKI was defined as an increase in post-shift serum creatinine by at least 0.3 mg/dl or at least 1.5 times the pre-shift serum creatinine levels. Additionally, we calculated pre-post-shift differences in NGAL. We used logistic regressions adjusted for age, body mass index, and HS. HS was also assessed as an effect modifier. RESULTS: PA_sd and PA_max seemed to be associated with AKI (OR=1.57 (95%CI=0.82;3.21) and 1.41 (0.71;2.85), respectively), but not PA_mean. There was no interaction between any of the PA variables and HS (p-value LRT&amp;#x3e;0.1). Mean (SD) increase in NGAL levels over the course of a work shift was higher among participants with AKI (27.8 (7.5)) compared to those without AKI (12.2 (2.7)). CONCLUSIONS: Results suggest that large changes and peaks in PA intensity should be avoided to protect renal function of harvest workers. Increased levels of NGAL among those with AKI are indicative of kidney damage among those with increased serum creatinine levels. KEYWORDS: Occupational physical activity, acute kidney injury, ambient heat stress

Zinc Metabolism: A Review with Regard to Zn Finger Proteins, DNA Methylation and p53; In Reference to its Deficiency Syndromes and Tracing its Immunological as Well as Epigenetic Relations

Epigenetics is the branch of biology that studies the effects of environment on genetics and vice versa. It is the connecting link between genotype and phenotype of an individual, and can be widely influenced by the nutrition and availability of certain essential micronutrients, in this review, zinc. Although a trace element, zinc is essential to the body as a core component of more than 300 proteins and enzymes, which when functioning normally impart structural and mechanical capacities to the body tissues and fluids. Zinc is ubiquitous to all parts of the body and regulates various metabolic and biological processes such as cell proliferation, apoptosis, tumorigenesis, along with the regular working of fetal and adult organs. The role of zinc-finger proteins is crucial to impart stability to a protein’s folds and in turn render it functional to play its role in gene expression to serve as oncogenes or tumor suppressor genes. Zinc deficiency is a common occurrence in various parts of the world and is generally due to inadequate intake through the diet but may also manifest itself in an inheritable form. The effects of low zinc on a cellular level can be seen through a diminishing immunity, increased oxidative stress, reduced functionality of the p53 protein leading to tumor formation, incorrect DNA methylation. While phenotypically, zinc deficit can be both congenital and acquired. Some such diseases discussed here are irritable bowel syndrome, acrodermatitis enteropathica, thymic atrophy, celiac disease and preterm birth. In this review, the focus is on the aspect of zinc availability to cells as an epigenetic modulator/regulator and the subsequent consequences arising due to imbalance of zinc in the cell.

Study of effect of guided meditation on quality of life in patients of end stage renal disease (ESRD) on maintenance hemodialysis – a randomised controlled trial

BackgroundThere is paucity of data regarding effects of guided meditation (Yoganidra) on quality of life among patients of chronic kidney disease on maintenance hemodialysis. Our objective was to study effects of guided meditation on physical, emotional, and cognitive dimensions of well-being and quality of life in patients undergoing maintenance hemodialysis.MethodWe collected baseline and post intervention data in control and intervention groups on hemodialysis and studied the effect of Guided mediation provided for 6 weeks.ResultEighty patients (forty in control and intervention group each) were studied. Mean age was 51 years. Hypertension and Diabetes were the most common etiological condition (28.75%) followed by undermined aetiology (25.00%). 8.75% of the patients had dialysis vintage of less than 1 year. There was statistically significant difference in qualities of happiness and all measures of physical general wellbeing. There was statistically significant difference in burden and effect of kidney disease as well as symptoms of kidney disease post intervention in Kidney Disease Quality of Life score. We carried out Qualitative analysis in our study by maintaining a diary of their subjective experiences related to listening music/guided meditation during the study period in which the feeling of peace and feeling inspired to manage the illness/ do regular work were the most common experiences (97.5%) reported by participants. ConclusionGuided meditation resulted in statistically significant improvement in happiness, enthusiasm, inspiration, activeness, alertness, awareness, degree of stability, self-confidence, clarity of thoughts, control over anger, self-reflection intervention in the intervention group. It reduced perceived stress. It improved burden and effect of kidney disease, symptoms of kidney disease and total Kidney Disease Quality of Life score. In qualitative dimensions of wellbeing (as emerging from analysis of results of diary), feeling of peace and feeling inspired to manage the illness/ continue regular work, clarity of thoughts, happiness, concentration, reduction of laziness, improved sleep pattern, reduction in anger among other psychological components.Trial registrationThis trial has been registered under clinical trial registry of India. (CTRI number-CTRI/2020/02/023438) (Date: 19/02/2020).

Influencing factors of fatigue among public health nurses during the COVID-19 pandemic: A cross-sectional study.

ObjectiveThis study investigated the effects of occupational stress, anxiety, depression, and sleep disturbance on the level of fatigue among public health nurses (PHNs).DesignThe study had a cross‐sectional, correlational survey design.MeasuresA total of 198 PHNs were enrolled from 30 public healthcare centers/offices. Data were collected between May and July 2021 using a structured questionnaire to investigate the general characteristics, occupational stress, anxiety, depression, sleep disturbance, and fatigue of the participants. Descriptive statistics and multiple regressions were used to determine fatigue and its influencing factors among PHNs.ResultsThe participants showed high fatigue and occupational stress levels due to a lack of rewards. The percentage of participants with mild‐to‐severe anxiety and mild‐to‐severe depression, and those who identified themselves as poor sleepers were 44.9%, 50.5%, and 70.2%, respectively. High levels of sleep disturbance (β = .23, p < .001), occupational stress (β = .21, p < .001), anxiety (β = .20, p = .016), depression (β = .17, p = .043), being younger (β = –.15, p = .004), and being a regular worker (β = .13, p = .017) were influencing factors of fatigue.ConclusionsIndividual efforts and organizational interventions to enhance sleep quality are needed to relieve fatigue among PHNs. Further, organizational support can be considerate of young nurses and regular workers, and alleviate their occupational stress. Moreover, anxiety and depression should be managed efficiently to reduce fatigue.

Leveraging mHealth usage logs to inform health worker performance in a Resource-Limited setting: Case example of mUzima use for a chronic disease program in Western Kenya

Health systems in low- and middle-income countries (LMICs) can be strengthened when quality information on health worker performance is readily available. With increasing adoption of mobile health (mHealth) technologies in LMICs, there is an opportunity to improve work-performance and supportive supervision of workers. The objective of this study was to evaluate usefulness of mHealth usage logs (paradata) to inform health worker performance. This study was conducted at a chronic disease program in Kenya. It involved 23 health providers serving 89 facilities and 24 community-based groups. Study participants, who already used an mHealth application (mUzima) during clinical care, were consented and equipped with an enhanced version of the application that captured usage logs. Three months of log data were used to determine work performance metrics, including: (a) number of patients seen; (b) days worked; (c) work hours; and (d) length of patient encounters. Pearson correlation coefficient for days worked per participant as derived from logs as well as from records in the Electronic Medical Record system showed a strong positive correlation between the two data sources (r(11) = .92, p < .0005), indicating mUzima logs could be relied upon for analyses. Over the study period, only 13 (56.3%) participants used mUzima in 2,497 clinical encounters. 563 (22.5%) of encounters were entered outside of regular work hours, with five health providers working on weekends. On average, 14.5 (range 1-53) patients were seen per day by providers. mHealth-derived usage logs can reliably inform work patterns and augment supervision mechanisms made particularly challenging during the COVID-19 pandemic. Derived metrics highlight variabilities in work performance between providers. Log data also highlight areas of suboptimal use, of the application, such as for retrospective data entry for an application meant for use during the patient encounter to best leverage built-in clinical decision support functionality.

Using the Rapid Upper Limb Assessment to examine the effect of the new Hotel Housekeeping California Standard

A housekeeper's job includes a variety of repetitive and strenuous tasks, which can put workers at high risk for musculoskeletal disorders. In 2018, a new standard was implemented in California aiming to prevent work-related injuries of hospitality industry workers. This paper assesses California housekeepers performing regular work tasks during their shifts from 2018 to 2020. Rapid Upper Limb Assessments (RULA) after the standard was implemented found average right-arm scores for scrubbing tasks (M = 6.93, SD = 0.00), vacuuming (M = 6.27, SD = 0.45), and trash-collecting (M = 4.48, SD = 0.50). Forces to move housekeeping carts were also evaluated, with 98% of pushing forces and 73% of turning forces observed within the accepted range. Results show that RULA scores remain high even after the implementation of the standard, with improvements only seen in tasks that required just changing of the method.

P06-08 Socio-demographic profile of physically inactive adults living in Italy according to the PASSI data

BackgroundInsufficient physical activity (PA) or physical inactivity (PI) is one of the ten leading risk factors for global mortality. PI leads to 20-30% increased risk of all-cause mortality and monitoring its current levels and trends in general population is essential to track progress towards health targets, identify at-risk groups, assess policies' effectiveness, guide future planning.MethodsPASSI (Progressi delle Aziende Sanitarie per la Salute in Italia - Progresses in ASSessing adult population health in Italy) is an ongoing cross-sectional Behavioral Risk Factor Surveillance System (BRFSS) that monitors prevalence and temporal trends for the major modifiable health-related risk factors in the adults (18-69 years) residing in Italy. Data are collected in the Local Health Units (LHU) by trained personnel who administer a standardized questionnaire telephonically to sampled people. In the period 2015-2018, 132,717 people were interviewed in more of 90% LHUs (89 out of 101 in 2018), achieving a response rate above 80%. Concerning PA/PI, respondents are classified as per the WHO indicators in: (i) Active - basing on levels achieved in leisure time and/or heavy work; (ii) Partially active - in leisure time and/or moderate work or in spare time and without regular work; (iii) Inactive - in leisure time with sedentary work or in spare time and without regular work. PASSI calculates prevalence of PA/PI overall and by socio-demographic characteristics, including 95% confidence intervals (CI), and a logistic regression model estimates adjusted prevalence ratios (APR).ResultsIn Italy, 28.8% (CI95%:28.5-29.1%) of adult population is featured by a sedentary lifestyle: PI is greater among women (32.4% vs. 25.1%; APR: 1.26), grows with age (34% in over50 vs. 24.7% among 18-34 year-old; APR: 1.34), is higher among deprived people both per economic difficulties (41.7% if many vs. 22.4% if none; APR: 1.39) and for education level (23.7% university vs. 47.2% primary/any; APR: 1.33). We observed a highly evident geographic gradient: PI amounts to 18.3% in the North, 25.2% in the Centre and 40.6% in the South. A multivariate analysis confirms these values are statistically significant.ConclusionsPASSI data provide strong evidence to support community prevention interventions on territorial planning or advice by health professionals.

A Comparative Study on the Self-Healing Characterizations and Formulation Optimization of Polyurea Coating.

Self-healing materials, especially self-healing polyurea/polyurethane, to replace traditional coating has been of increasing interest in the past decade. The frequency of regular maintenance work can also be reduced as the coating is capable of forming bonds at ruptured sites. This reduces the cost of maintenance and the risk involved in workers engaging in maintenance work. The extremely short curing time of polyurea coating could potentially outweigh the cost due to its short down time. With a high self-healing efficiency, self-healing polyurea could be the ultimate choice of protective coating. This report aims to find the optimum formulation for fabrication of polyurea with a high self-healing efficiency. This is conducted by changing the composition of the components chosen for formulation of polyurea. The choice of isocyanate and amine is varied to explore its impact on chain mobility and microphase separation, which are important factors affecting self-healing efficiency. A series of characterizations, including ATR-FTIR, DSC, optical microscope and mechanical tester, is used to analyze the factors affecting the self-healing efficiency of fabricated polyurea and to eventually determine the best formulation. The ideal formulation of toluene 2,4 diisocyanate-amine (TDI-P1000) polyurea managed to achieve a self-healing of 42%. Further studies could be done to include multiple healing mechanisms after different area of polyurea to boost its self-healing efficiency after repeated healing.

Review Paper on a Study on SQL Attacks and Defense

In today's era, every person is utilizing websites and so many different web applications for online administrations, for example booking of railway tickets, movie ticketing, shopping, communication, and so forth. These websites consist sensitive and confidential information. With the linearity of web applications in the last decade, the unconstructive crash of security has also matured either. SQL injection attack is one such attack where the anonymous user can append SQL code to the input query. This research paper starts with developing criteria for a systematic literature review based on research questions, quality assessment, and data samples. The paper presents various SQL injection techniques with their intended attacks. Further studies explore different techniques to prevent attacks. Existing vulnerabilities of Web systems threaten the regular work of information systems. The most common Web system vulnerability is SQL injection. There are known approaches to protect Web applications against SQL injection attacks in the article. To improve the Web software security is developed defense mechanism that protects Web resources from SQL injection performing. To implement this software it is used PHP, JavaScript, and formal language theory known as regular expressions. As a result, it is received a software tool that allows protecting Web software from SQL injection vulnerability. The developed software tool allows users to protect their Web applications from an attack using SQL.

RIZIK – a risk management survey for Croatian museums geared towards the better assessment, prevention and reduction of risk

Purpose. The aim of the survey on risk management in Croatian museums was to collect comprehensive data on the preparedness of Croatian cultural organisations for various risks in order to better assess, prevent and reduce risks. Approach and methodology. Against the background of the devastating damage caused by the March 2020 earthquake to cultural heritage in Zagreb, Croatia, the International Institute for the Restoration of Historical and Artistic Works, IIC-Croatian Group, conducted a national survey under the name of RIZIK. The online survey included 73 questions divided into four categories: general information about the institution, the property including buildings and collections, followed by questions on finances and audience. Questions on safety and regular maintenance, work and business plans, essential emergency services in case of danger, possible hazards and risks affecting the buildings and the collection, along with questions on measures that can help prevent or minimise risks and damage to the collection, the building, staff, and visitors, are part of the survey. Findings. As many as 188 museums were invited to participate in the survey, more than 100 responded, although some answered the questions only partially. This paper shows a cross-section of the general situation in Croatian museums, addresses the problem of modernising exhibition and depository spaces, describes the idea behind the survey, and discusses its results and possibilities for enhancement. Originality/value. The RIZIK survey is the first risk management survey sent to all museum institutions in the Republic of Croatia. The collected data are an important first insight into the current state and standards in Croatian museums, galleries and collections. Based on the results obtained, the survey participants can identify areas where they can strengthen or change their work practices, organisation and further planning.

Individual and organizational resilience-Insights from healthcare providers in Germany during the COVID-19 pandemic.

We explored the effects of resilience in the healthcare setting during the COVID-19 pandemic in Germany. Our study sheds light on the cross-level effects of resilience in hospitals and thus responds to calls to research this empirically. In a cross-sectional study design, the perceptions of resilience of employees in hospitals and of transformations at the individual, team, and organizational level were analyzed. An online survey was conducted in summer 2020 in Germany in which 1,710 healthcare workers completed a self-report questionnaire. Results indicate that resilience is both a highly interrelated construct on the individual and organizational level and also positively linked to perceptions of transformation as an indicator for demonstration of resilience. We also found a partial mediation effect of organizational resilience and team efficacy, respectively, on the relationship between individual resilience and perceived transformation on the individual and organizational level as well as a full mediation on the team level. The study highlights the interdependence of individual and organizational resilience (which is mediated by team efficacy) and its impact on perceived transformation in German hospitals during the COVID-19 pandemic. Whereas team efficacy is crucial for performance in regular work operations, during a pandemic the organizational level becomes more relevant. Theoretical and practical implications are discussed.

At the Edge of Voltage Collapse in Slovenian Power System After Outage of NPP Krško and 400 kV Node Tumbri

A major disturbance that resulted in the tripping of the 400 kV line Tumbri (HR) – Hévíz (H) and the entire 400 kV node Tumbri in the Croatian system occurred on 27 August 2003 and almost led to a voltage collapse in that area. The disturbance was initiated by an accidental outage of a generator at NPP Krško (SLO) due to a human error during regular maintenance work. Its further development was the consequence of a hidden fault of the numeric protection at the 400 kV switchyard Tumbri. In the specific system operating conditions (network configuration and generator scheduling) at that moment, the systems of Slovenia and Austria in the central part of the UCTE system were brought near voltage collapse. At the same time the operational security level of the power systems of Croatia and BiH, then at the perimeter of the UCTE system, was also decreased. The sequence of events is described and discussed in the paper. Recordings of frequency and active power in representative transmission lines, taken at NDC Zagreb, are also given. A simulation analysis was performed first for the real disturbance scenario and then for the hypothetical scenario in which there was no failure of the protection at Tumbri substation and consequently the 400 kV node Tumbri would have remained in operation. The simulations showed that the loss of a NPP Krško generator would have only a local impact and would be barely noticeable at the UCTE level had the 400 kV node Tumbri remained in operation. Simulation results are in accordance with information obtained from the Slovenian power system where severely depressed voltages were recorded, particularly in the area around NPP Krško. It was also observed that the Slovenian system was acting as a reactive power sink while active power was flowing in the opposite direction, i.e. towards Croatia. Assessment of Croatian system security during the disturbance with respect to voltage stability, frequency and angle stability and congestion criteria was done on the basis of measurements and simulation results. The conclusion was that Croatian system security with respect to all the above mentioned criteria was preserved but it must be stressed that the initial system operating conditions were rather favorable from the stability point of view.

Mining hourly population dynamics by activity type based on decomposition of sequential snapshot data

ABSTRACT The dynamic population distributions by activity type (e.g. working, shopping or in-home) are vital for resource allocation, urban planning and epidemic containment. Although studies have incorporated individual-level human mobility data to map population distribution by activity type, access to such data is hindered due to privacy issues and they rely on auxiliary data to provide priori activity knowledge. This paper presents a method for generating the population dynamics by activity type. We first introduce more readily available sequential snapshot data to construct the population mixture model, then decompose the population mixture, and finally estimate the dynamic population size for each activity. We test the method in the central districts of Guangzhou city, China, based on real-time Tencent user density data. Correlation analysis and accuracy assessment prove that our method can accurately estimate hourly distributions for populations engaging in working, stay-at-home, and socializing activities. The temporal distribution of the working population reproduces the regular work scenarios and socializing population displays complex spatial patterns. We also find that there is an underlying relationship between a region’s function and its dynamic population structure. The presented method has great potential for application and could provide new insight for studying urban dynamic functions.

Compromises between Occupational Aspirations and VET Occupations—a Contribution to the Reproduction of Social Inequalities?

Abstract Many school leavers cannot fulfil their occupational aspirations when entering vocational education and training (VET), and have to make compromises. This study asks what form these compromises take by examining multiple extrinsic occupational dimensions, and investigates differences by social background. Data for VET entrants from lower and intermediate school tracks from the German National Educational Panel Study (NEPS-SC4) are combined with occupation-specific data. The cluster analysis reveals four distinct patterns of compromise: 1) upward moves and 2) downward moves in multiple extrinsic attributes, 3) concessions in firm size and wage, and 4) concessions in regular working hours and status. Multinomial logistic regressions indicate that compromise formation is hardly socially stratified in terms of parental education and occupational position. Compared to natives, VET entrants from second-generation migrant families are more likely to move upward into relative better training occupations than occupations originally aspired to.