There are world tendencies to implement interconnected infrastructures of energy-water-waste-transportation-food-health-social systems to enhance the overall performance in normal and emergency ...situations where there are multiple interactions among them with possible conversions and improved efficiencies. Hybrid energy systems are core elements within interconnected infrastructures with possible conversions among electricity, thermal, gas, hydrogen, waste, and transportation networks. This could be improved with storage systems and intelligent control systems. It is important to study resiliency of hybrid energy systems within interconnected infrastructures to ensure reduced risks and improved performance. This paper presents framework for the analysis of resiliency layers as related to protection layers. Case study of hybrid energy system as integrated with water, waste, and transportation infrastructures is presented where different resiliency and protection layers are assessed. Performance measures are modeled and evaluated for possible interconnection scenarios with internal and external factors that led to resiliency demands. Resiliency layers could trigger protection layers under certain conditions, which are evaluated to achieve high performance hybrid energy systems within interconnected infrastructures. The proposed approach will support urban, small, and remote communities to achieve high performance interconnected infrastructures for normal and emergency situations.
During a major outage in a secondary network distribution system, distributed generators (DGs) connected to the primary feeders as well as the secondary network can be used to serve critical loads. ...This paper proposed a resilience-oriented method to determine restoration strategies for secondary network distribution systems after a major disaster. Technical issues associated with the restoration process are analyzed, including the operation of network protectors, inrush currents caused by the energization of network transformers, synchronization of DGs to the network, and circulating currents among DGs. A look-ahead load restoration framework is proposed, incorporating technical issues associated with secondary networks, limits on DG capacity and generation resources, dynamic constraints, and operational limits. The entire outage duration is divided into a sequence of periods. Restoration strategies can be adjusted at the beginning of each period using the latest information. Numerical simulation of the modified IEEE 342-node low voltage networked test system is performed to validate the effectiveness of the proposed method.
Measuring Italian Resilience Lau, Chloe; Chiesi, Francesca; Li, Catherine ...
European journal of psychological assessment : official organ of the European Association of Psychological Assessment,
09/2023, Volume:
39, Issue:
5
Journal Article
Peer reviewed
The Essential Resilience Scale (ERS) measures global
trait resilience and three factors of physical, emotional, and social
resilience. This study developed an Italian adaptation of the ERS and ...recruited
participants from Italy (N = 500) to complete the
measure along with criterion validity measures of broad personality traits and
related psychological concepts. Confirmatory factor analysis (CFA) demonstrated
robust evidence for a well-fitting three-factor model of the ERS, with items
strongly loading onto their respective latent factors. Utilizing
Samejima's graded response model, most item discrimination values were
moderate-to-high, and category threshold parameters were well-distributed
throughout the latent continuum. The ERS showed correlations in the expected
directions with extraversion, emotionality, optimism, mastery, resilience,
behavioral activation, behavioral inhibition, stress, and well-being. Cultural
invariance was supported (at the scale- and item-level) with multigroup CFA and
differential item functioning (DIF) with a sample of Canadian English speakers
(N = 874). Findings evinced the internal
consistency (i.e., total MacDonald's ω), factorial validity (i.e.,
three-factor CFA), criterion validity (i.e., personality, temperament), and
convergent validity (i.e., trait resilience and well-being) of the Italian ERS.
Results suggest the Italian ERS can be applied for measuring resilience for
future research studies in Italian-speaking populations.
•Identify and analyse the factors of omnichannel healthcare supply chains resiliency (OHSCR).•Study is conducted in three research phases for futuristic building blocks of OHSCR.•ML approach, i.e. ...k-mean clustering, is used to identify the futuristic blocks of OHSCR.•A future conceptual research framework is proposed.
There is a lack of studies which have explored the factors of omni-channel healthcare supply chain resiliency (OHSCR). Thus, the current study explores the resiliency factors of healthcare supply chains (HSCs) and the development of futuristic blocks of OHSCR. In the first phase of the study, the resiliency factors of HSCs were identified through an extensive literature review and expert interviews. In the second phase, a machine learning approach, i.e., K-means clustering, was used to develop the futuristic blocks of OHSCR. Lastly, in the third phase, implications and future research propositions were discussed. The findings of this study suggest that the healthcare sector evaluating OHSCR should focus on six key building blocks: data-driven management and transformative technological adoption, flexible and transparent organisational management system, robust and diversified supply chain system, responsible and customer-centric supply chain, information sharing and knowledge management, and strategic alignment and network ecosystem. A conceptual research framework is also proposed to support future research.
•A probabilistic methodology to assess the resilience of distribution systems subjected to hurricanes is proposed.•The poles' failure probability, concerning their dependence on one another, was ...modeled.•A novel resilience quantification framework has been proposed.
The impact of extreme weather events on power system resilience can be seen in historical electrical disruptions. Due to the increasing intensity and frequency of extreme weather events following global warming and climate change, a greater focus is required to design power systems with high resilience and low cost through assessing and quantifying power system resilience. In this way, we propose a transparent methodology and a set of metrics to quantify the resilience of distribution systems subjected to hurricanes. This methodology includes a probabilistic and detailed approach to modelling the failure probability of overhead lines and the restoration time of damaged lines. Moreover, the fragility analysis of the power system infrastructure is considered age-dependent, and the system’s resilience by considering different lifetimes is assessed. The time-dependent resilience assessment constitutes an essential component in risk-informed decision-making for resilience enhancement strategies in the future. Specifically, this paper provides two resilience curve-based metrics: vulnerability rate and restoration rate. The first metric indicates the power system’s ability to resist extreme events, and the second indicates its ability to bounce back to normal performance. Simulations are performed on the IEEE 69-bus distribution test system to validate the suggested methodologies. The results indicate the capability of the proposed methodology and metrics to precisely assess and quantify the power system resilience. A significant correlation between the age of power distribution systems and the system’s resilience can be seen. These findings can support decision-making concerning system management and plans such as expansion planning and resource allocation.
The aim of this study was to examine the relationship between ego-resiliency and the intensity of health behaviors among Polish health sciences students.
The study involved 483 students from ...health-related faculties in southern Poland, consisting of 314 women (63.7%) and 179 men (36.3%). The average age of the participants was 21.7 ± 2.5 years. To assess resiliency (ER), the Ego-Resiliency Scale (ER89-R12) by Block and Kremen was used in its Polish adaptation. The intensity of health behaviors was examined using the Health Behavior Inventory (HBI) developed by Z. Juczyński.
The results revealed a positive correlation between the intensity of health behaviors and ER (r = 0.43, p < 0.001), both for the general factor and its categories (positive mental attitude, proper eating habits, preventive actions, and prohealth activities). Students with a high level of health behaviors exhibited significantly higher ER (M = 38.95, SD = 5.15) compared to those with average (M = 35.93, SD = 5.03) and low (M = 32.97, SD = 5.12) HBI levels. Among the HBI categories, Positive Mental Attitude showed the strongest correlation with both general ER and its factors: optimal regulation (OR) and openness to life experiences (OL). Furthermore, the correlation was found to be stronger with the OR and weaker with OL.
Higher ER in students is correlated with a greater frequency of health behaviors. Nurturing the development of ER may contribute to the maintenance of prohealth practices despite life difficulties and temporary loss of motivation. This, in turn, promotes the regularity of health behaviors, which is crucial for their positive impact on overall health.
Certain coping strategies alleviate stress and promote positive psychological outcomes, whereas others exacerbate stress and promote negative psychological outcomes. However, the efficacy of any ...given coping strategy may also depend on personal resiliency. This study examined whether personal resiliency moderated the effects of task-oriented, avoidance-oriented, and emotion-oriented coping strategies on measures of depression, anxiety, stress, positive affect, negative affect, and satisfaction with life. Results (N = 424 undergraduates) showed higher personal resiliency was associated with greater use of task-oriented coping strategies, which were in turn associated with more adaptive outcomes, and less reliance on nonconstructive emotion-oriented strategies, which in turn were associated with poorer psychological outcomes. In addition, individual differences in personal resiliency moderated the effects of task-oriented coping on negative affect and of emotion-oriented coping on negative affect and depression. Specifically, proactive task-oriented coping was associated with greater negative affect for people lower in personal resiliency. Moreover, high personal resiliency attenuated the negative effects of emotion-oriented coping on depression and negative affect. The effects of avoidance-oriented coping were mixed and were not associated with or dependent on levels of personal resiliency.
Regulated electricity utilities are required to provide safe and reliable service to their customers at a reasonable cost. To balance the objectives of reliable service and reasonable cost, utilities ...build and operate their systems to operate under typical historic conditions. As a result, when abnormal events such as major storms or disasters occur, it is not uncommon to have extensive interruptions in service to the end-use customers. Because it is not cost effective to make the existing electrical infrastructure 100% reliable, society has come to expect disruptions during abnormal events. However, with the increasing number of abnormal weather events, the public is becoming less tolerant of these disruptions. One possible solution is to deploy microgrids as part of a coordinated resiliency plan to minimize the interruption of power to essential loads. This paper evaluates the feasibility of using microgrids as a resiliency resource, including their possible benefits and the associated technical challenges. A use-case of an operational microgrid is included.
The present study examined whether general self‐efficacy (GSE) mediated the association between resiliency and academic engagement, and whether social support moderated the mediating process. ...Participants included 1549 Chinese adolescents (Mage = 16.71 years old, 629 boys). Using self‐reported questionnaires, our study found that, after controlling for youth age, sex, and family socioeconomic status, GSE partially mediated the positive relation between resiliency and academic engagement. Further, social support moderated the association between resiliency and GSE, as well as the association between resiliency and academic engagement. Findings underline the significance of identifying the mediating and moderating factors linking resiliency and academic engagement. Implications and future research directions were discussed.
Highlights
Resiliency was positively associated with academic engagement.
General self‐efficacy (GSE) partly mediated the relation between resiliency and academic engagement.
Social support moderated the relation between resiliency and GSE.
Social support also moderated the relation between resiliency and academic engagement.
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