Your browser doesn't support javascript.
Show: 20 | 50 | 100
Results 1 - 20 de 619
Filter
Add filters

Year range
1.
Southern Communication Journal ; JOUR: 1-10,
Article in English | Web of Science | ID: covidwho-2106806

ABSTRACT

As the COVID-19 pandemic swept America in 2020, schools closed and families shifted to children learning online from home. This labor was dominantly covered by mothers, many of whom still had careers to maintain. A 2020 New York Times article reporting on the homeschooling shift concluded with the polarizing declaration that while women did most of the labor associated with homeschooling, men did not perceive the gender imbalance. Guided by a critical feminist lens, the authors examined the comments posted in the article's comment section to unpack the discourse. Western society places pressure on women to flawlessly perform motherhood and other tasks simultaneously;as such, the COVID-19 pandemic provided a context rich for further subjugation and subordination of pink-collar work.

2.
International Journal of Engineering Education ; JOUR(5):1562-1576, 38.
Article in English | Web of Science | ID: covidwho-2101488

ABSTRACT

Research suggests that online learning should be more engaging and collaborative to provide a compatible alternative to in-person learning. Many educators have implemented active learning in their in-person classrooms, while only a few assess how effective similar techniques are in virtual environments. The authors hypothesize that virtual learning, including active learning components, can improve student learning in virtual environments. Furthermore, the authors hypothesize that learning in virtual settings would be affected by students' gender, ability, and familiarity with the topic. The authors conducted a quasi-experimental study involving eighty-seven students from two institutions who participated in an online workshop covering fundamental concepts in construction scheduling. They were split into two groups: one group had no prominent active learning component, while the other was exposed to an active learning component. All participants completed pre and post-workshop surveys to assess their learning of the workshop outcomes and explore the effectiveness of virtual workshops and active learning components in online course delivery. The results of this study suggest that virtual workshops are effective in teaching construction scheduling, while active learning in the form of virtual pair-work does not have a significant positive impact on student learning. Furthermore, student performance in virtual workshops significantly differs based on gender, ability, and familiarity with the topic. Therefore, instructors need to be aware of significant student performance challenges, particularly for males and those with some familiarity with the topics covered in virtual workshops. Since this study was conducted during the COVID-19 pandemic, the authors present further challenges and recommendations for educators and institutions under similar emergency circumstances.

3.
Indian J Ophthalmol ; 70(11): 3779-3784, 2022 11.
Article in English | MEDLINE | ID: covidwho-2100020

ABSTRACT

Cataract is the most common cause of avoidable blindness in the world. While cataract surgery is continually evolving, manual small-incision cataract surgery (MSICS) still remains highly relevant, especially with the threat of the coronavirus disease 2019 (COVID-19) still looming large over the world. MSICS today has a renewed significance, since it does not involve the use of any advanced machinery and relies mainly on easily sterilizable instruments, thereby making it a safe and inexpensive option. A self-sealing valvular tunnel entry forms the basis of MSICS, and proper positioning and construction of the tunnel is imperative to the success of the surgery. With more and more people demanding spectacle independence after surgery, it becomes important to have a thorough understanding of the factors that may influence surgically induced astigmatism in MSICS. These include the incision location, size and shape, configuration of the sclero-corneal tunnel, pre-existing ocular pathology, role of sutures, amongst others. With proper knowledge, many of these factors can be modulated to achieve best results.


Subject(s)
Astigmatism , COVID-19 , Cataract Extraction , Cataract , Surgical Wound , Humans , Astigmatism/diagnosis , Astigmatism/etiology , COVID-19/epidemiology , Cataract Extraction/adverse effects , Cataract Extraction/methods , Lens Implantation, Intraocular/methods , Cataract/complications , Surgical Wound/complications
4.
IEEE Transactions on Engineering Management ; JOUR: 1-16,
Article in English | Scopus | ID: covidwho-2097663

ABSTRACT

COVID-19 is an epidemic threat to human health caused by a novel coronavirus. Different countries are still struggling with whether to extend lockdown policies considering economic recession outcomes or lift the lockdown and recover the fragile economy. This research narrows the knowledge gap by applying a decision-making approach in a fuzzy environment to consider the uncertainties in the supply chain risk assessment of the construction industry during the COVID-19 pandemic. Besides, risk factors (RFs) are identified and interrelationships between RFs are depicted. RFs are categorized using expert panel surveys and literature reviews. The interdependencies between different RFs are evaluated using a combination of interval-valued intuitionistic fuzzy numbers, decision making trial and evaluation laboratory, and the Choquet integral to allow a strong interrelationship between the sum of rows and the sum of columns of RFs in structural correlation analysis. Next, priorities of RFs are obtained by considering interdependencies between different RFs using a combination of the technique for order preference by similarity to the ideal solution (TOPSIS) method with the intuitionistic fuzzy set. An intuitionistic fuzzy weighted average operator is utilized to aggregate individual opinions of decision makers for rating the importance of RFs. Results reported that the scarcity of material and financial resources due to movement restrictions with overall weights of 0.0614 and 0.413 are the most prominent RFs in the supply chain due to the COVID-19 pandemic. The results of this research can assist decision-makers in developing strategic policies to prevail over the risk challenges and subsequently aid experts in redesigning supply chains. IEEE

5.
20th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology, LACCEI 2022 ; JOUR, 2022-July.
Article in Spanish | Scopus | ID: covidwho-2091236

ABSTRACT

The Covid-19 pandemic has had a significant impact on the construction sector;companies have been forced to submit to new guidelines for prevention and control of the spread of Covid-19. The objective of the study is to determine how the safety management system influences occupational health in times of Covid-19 in the construction sector applied in Peru. The methodology used was: the analysis of documents, project information and risk factors;likewise, among the instruments used were: survey or form, project data sheets, comparison charts, hazard identification matrices and risk assessment (IPER). The conclusions reached were that the construction projects were moderately affected with a negative impact by the presence of Covid-19, in the verification of: The increase in project costs, the decrease in worker productivity;the extension of the schedule that was proposed at the start of work, and the new guidelines for hazard identification, risk assessment and control measures taken in the face of Covid-19. © 2022 Latin American and Caribbean Consortium of Engineering Institutions. All rights reserved.

6.
Physics Education ; JOUR(1):1-15, 58.
Article in English | Academic Search Complete | ID: covidwho-2087680

ABSTRACT

A linear variable differential transformer is termed as LVDT in short. A simple miniature and inexpensive LVDT was constructed for laboratory teaching. Starting from the fundamental physics of LVDT, a complete demonstration was presented. The heart of an LVDT is three coils that were taken from the electrical ‘Ding-dong’ doorbell. A universal laboratory experiment kit named ‘ExpEyes-17’ is used to drive the LVDT and display the input and output signals on a laptop screen. Thus, a compact LVDT system was developed. Displacement experiments were conducted, and the well-known V-shape response for our LVDT was obtained. The theory and experiment were presented with a high degree of clarity for ease of understanding. A complete demonstration was given to a group of students while teaching the theory of LVDT, and an excellent response from the group was obtained. Moreover, online demonstration of LVDT experiments using our kit was easily achievable. The authors have used the setup for remote demonstration the experiment to the students during COVID-19 pandemic lockdown. [ FROM AUTHOR]

7.
Problems and Prospects of Development of the Road Transport Complex: Financing, Management, Innovation, Quality, Safety - Integrated Approach ; : 26-41, 2021.
Article in English | Scopus | ID: covidwho-2081118

ABSTRACT

Financial security has always been, is and will be the most painful topic for those who do not have their own funds. This applies to absolutely all sectors of the economy, all industries, all countries. When it comes to large-scale projects, including bridge construction, for Ukrainian realities it becomes a real test. In the context of the COVID-19 pandemic challenges, the problem of financial security is particularly acute, especially when it comes to poor regions that are unable to self-finance themselves and survive only on state financial support. Therefore, this section considers the problem of distribution of state financial support on the basis of the integrated approach. The answer to the research question is given: «What components should be included in the methodology for determining state financial support.» The comprehensive method for determining the share of public funds, which takes into account the investment attractiveness of the region and its risk, is proposed. Since the problem of financing the construction and reconstruction of bridges is relevant for a number of countries, this technique was tested on the example of bridge construction. According to the results obtained, the state financial support includes territorial units that are not leaders in priority for an investor and have a high level of risk in investing funds. The integrated approach allowed to identify 10 territorial centers for funding, with the areas with the worst priority indicators receiving the largest share of financial state support. © 2021 I. Dmytriiev, Ia. Levchenko and others authors.

8.
International Journal of Logistics Management ; 2022.
Article in English | Scopus | ID: covidwho-2078072

ABSTRACT

Purpose: The impact of COVID-19 pandemic has been severely felt by India's construction industry, which contributes heavily to economic growth and employment. An analysis of the impact of supply chain agility, supply chain resilience and information technology capability on the construction supply chain cost and delivery performance is presented in this study in an Indian scenario post-COVID-19. Design/methodology/approach: An analysis of moment structures-confirmatory factor analysis-based structural equation modeling is applied to a structured questionnaire received from 220 construction companies located in Southern India. Findings: According to the results, supply chain agility, supply chain resilience and information technology capability are essential capabilities for post-COVID-19 supply chain performance. Furthermore, these factors are observed to have a positive impact on improving cost and delivery performance in construction supply chains focused on building sustainability. Research limitations/implications: The results of this study can be used by other industries to ensure robustness and sustainability of business operations during post-COVID periods. Improving supply chain agility and information technology capabilities along with building resilience results in improving cost and delivery performance against disruptive scenarios. Originality/value: Despite previous studies addressing the effects of COVID-19 on supply chain performance, information technology capability, agility and resilience are not addressed in construction industry research. The current study examines the simultaneous effects of resilience, agility, and information technology capability on the cost and delivery performance of Indian construction projects. © 2022, Emerald Publishing Limited.

9.
2021 IJALS Symposium on Technological Advancement for Social Welfare: Contemporary Development and the Future Impact ; 2573, 2022.
Article in English | Scopus | ID: covidwho-2077226

ABSTRACT

The COVID-19 pandemic has constrained development area laborers to telecommute. there are positive variables as diminished travel time, self-guideline of work time and longer stay at home. yet additionally has an adverse consequence as emotional wellness problems that can't be overlooked. An emotional well-being issue that is frequently portrayed is pressure. With respect to the danger that can trigger emotional wellness issues in laborers in the development area, performing multiple tasks is the place where representatives take on a job in their work just as assume a part in the family simultaneously. muddled working hours, where bosses can give tasks whenever which implies the functioning time might be longer and furthermore triggers weariness and stress. The method used in this study is a literature study, with literature sources in the form of research and study results, laws and regulations, articles in online mass media and official websites. The government as the regulator must prevent mental health disorders for workers by issuing regulations regarding the details of the implementation of work from home in all sectors. The recommendation for regulations related to WFH is to determine the working hours in one day not to exceed the time when working in the office, not allowed to give overtime work above the normal working time, not to give employees an excessive workload, make an appeal for ways to reduce mental disorders related to work from home. © 2022 American Institute of Physics Inc.. All rights reserved.

10.
Ain Shams Engineering Journal ; : 102008, 2022.
Article in English | ScienceDirect | ID: covidwho-2068696

ABSTRACT

Team development is critical to the success of any organization, especially in construction projecta. If the team includes members from diverse locations, it brings diversity to the team. In recent times, a new breed of virtual teams has evolved in various construction organizations. However, coordinating such virtual teams on building projects remains a difficult challenge. Therefore, this research aims to identify the factors affecting efficient virtual teams to manage and tackle the challenges of virtual teams in construction projects in Egypt. To achieve the research aim, a combination of comprehensive research methods is adopted, in addition to the applied study that includes the distribution of the questionnaire survey among 55 members working in virtual teams in the field of the construction industry. The findings of this research contribute to identifying the challenges of virtual team management during the project lifecycle and studying the strategies and technological tools to deal with these challenges.

11.
Innovation and Development in Business Law ; : 52-64, 2021.
Article in English | Web of Science | ID: covidwho-2068293

ABSTRACT

The COVID-19 pandemic is a global test for all national economies. The impact of the sanitary crisis is also found in the field of constructions, strongly affected by the restrictions imposed by the pandemic. Most works in the field of construction are performed on the basis of contracts, which follow the model of National Contracts, approved by GD1/2018. The paper examines the impact of the COVID-19 pandemic on how the various clauses of National Contracts, such as clause 66 (referring to Force Majeure), clause 22 (which mentions the Contractor's obligation to ensure occupational health and safety on site), clause 68 (relating to the risks of the beneficiary), clause 17 (program of works) and other clauses must be applied. The paper presents a series of scenarios for the application of the clauses in the National Contracts to allow the management of the risks created by the health crisis on the execution of the works.

12.
Sustainability ; 14(19):12889, 2022.
Article in English | ProQuest Central | ID: covidwho-2066477

ABSTRACT

Reaching full employment and reducing the unemployment rate is one of the 17 sustainable development goals (SDGs) issued by the United Nations to face COVID-19 and the complex global economic situation. Although governments, society, and organizations have made efforts towards SDGs, how employees exert their subjective initiative and enhance their career adaptability is fundamental to solve the employment issue. How to enhance employees’ career adaptability to strengthen their psychological ability to face career changes is the guarantee of sustainable employment. In the light of the main force role and the unique characteristics of the new generation of employees in the workplace, this study aims to explore the relation between a proactive personality and career adaptability. According to the career construction theory, this study constructed a moderated mediation model to test the effect of a proactive personality on career adaptability through career identity and thriving at work, and the moderating role of task interdependence. Surveying 285 new-generation employees in China, this research found that a proactive personality had a significant positive impact on career adaptability, and that career identity and thriving at work mediate the relation. Task interdependence moderated this relation. Our findings extend the research of career construction theory on individual factors and contextual factors, and offer insights into enhancing the sustainability of human resource management and supporting sustainable economic development.

13.
Sustainability ; 14(19):12618, 2022.
Article in English | ProQuest Central | ID: covidwho-2066437

ABSTRACT

The global expansion of urbanization is posing associated environmental and socioeconomic challenges. The capital city of Ethiopia, Addis Ababa, is also facing similar threats. The development of urban green infrastructures (UGIs) are the forefront mechanisms in mitigating these global challenges. Nevertheless, UGIs in Addis Ababa are degrading and inaccessible to the city residents. Hence, a 56 km long Addis River Side Green Development Project is under development with a total investment of USD 1.253 billion funded by Chinese government aid. In phase one of this grand project, Friendship Square Park (FSP), was established in 2019 with a total cost of about USD 50 million. This paper was initiated to describe the establishment process of FSP and assess its social, economic, and environmental contributions to the city. The establishment process was described in close collaboration with the FSP contractor, China Communications Construction Company, Ltd. (CCCC). The land use changes of FSP’s development were determined by satellite images, while its environmental benefits were assessed through plant selection, planting design, and seedling survival rate. Open and/or close ended questionnaires were designed to assess the socioeconomic values of the park. The green space of the area has highly changed from 2002 (8.6%) to 2019 (56.1%) when the park was completed. More than 74,288 seedlings in 133 species of seedlings were planted in the park. The average survival rate of these seedlings was 93%. On average about 500 people visit the park per day, and 400,000 USD is generated, just from the entrance fee, per annum. Overall, 100% of the visitors were strongly satisfied with the current status of the park and recommended some additional features to be included in it. In general, the park is contributing to the environmental and socioeconomic values of the city residents, and this kind of park should be developed in other sub-cities of the city as well as regional cities of Ethiopia to increase the aesthetic, environmental and socioeconomic values of the country, at large.

14.
Slovak Journal of Civil Engineering ; 30(3):33-42, 2022.
Article in English | ProQuest Central | ID: covidwho-2065375

ABSTRACT

This study is focused on the feasibility of using energy performance contracting (EPC) for the retrofit of two apartment buildings constructed using precast concrete technologies in Slovakia decades ago. The retrofit packages were defined, and their suitability for EPC was evaluated through discounted payback. The uncertainties in the profitability calculations were covered by designing five possible economic developments and defining input ranges instead of just single inputs. The measures in the technical systems were shown to be more feasible than the retrofit of the building envelopes. The potential to finance the selected measures for technical systems through EPC was further evaluated. It was shown that, for at least one of the two buildings studied, the EPC was recommended only for the economic developments with a notable increase in energy prices compared to the baseline that referred to the situation before the Covid-19 pandemic. In the best case, the payback was four years for one building and seven years for the other;thus, both were potentially suitable for EPC. However, for a complex retrofit, the EPC must be combined with a different funding source to also finance other retrofit measures.

15.
Chest ; 162(4):A1990-A1991, 2022.
Article in English | EMBASE | ID: covidwho-2060882

ABSTRACT

SESSION TITLE: Dirty Jobs: Occupational Lung Diseases SESSION TYPE: Case Reports PRESENTED ON: 10/18/2022 11:15 am - 12:15 pm INTRODUCTION: Hypersensitivity Pneumonitis (HP) is a group of immunologically mediated lung diseases. It develops in susceptible individuals with exposure to provoking antigens along with influence from genetic and environmental factors. There remains no standardized approach for assessing the various forms of HP and the diverse nature of the disease makes it difficult and often underdiagnosed. Cystic disease is not uncommon in HP, but the advanced cystic disease seen in our young patient was unique and likely compounded by her pregnancy as well as a previous illness with COVID-19. CASE PRESENTATION: A 26-year-old female construction worker at 12 weeks gestation, with a past medical history of polysubstance abuse and previous COVID-19 infection ten months prior, presented with progressively worsening dyspnea of 9 months. She was admitted with acute hypoxic respiratory failure due to recurrent right pneumothorax requiring multiple thoracenteses and eventually chest tube placement. CT Chest demonstrated severe cystic interstitial fibrosis with emphysematous changes. Initial lung biopsy showed interstitial fibrosis as a possible sequela of COVID-19. Due to her pregnancy and medical complications, she was transferred to a transplant center where she continued to have recurrent pneumothoraces requiring video-assisted thoracoscopic surgery. Autoimmune workup, HP panel, and extended myositis panel were negative. However, a repeat lung biopsy pointed to subacute HP. Despite steroid and immunosuppressant initiation, her hospital course was complicated by cardiac arrest and brain death. She went on to become an organ donor. DISCUSSION: Diffuse cystic lung diseases are characterized by parenchymal destruction of the airway walls leading to expansion of the distal airspaces forming multi-lobular cysts. A broad differential diagnosis for this exists including infection, Langerhans histiocytosis, lymphangioleiomyomatosis, interstitial pneumonia, and HP. The first step to evaluate HP is a detailed history of potential exposures. Our patient worked in construction and was exposed to commonly demonstrated antigens used in paint, plastic, and wood manufacture. Pregnancy appears to trigger symptoms in some patients, seen in prior case reports. Our patient's symptoms began after her COVID infection. Though not clearly studied, some studies have proposed that dysregulation of COVID - 19 immune response triggers interstitial fibrosis as a long-term sequela. Early diagnosis and treatment with steroids are vital to the treatment and prevention of complications such as recurrent pneumothorax. CONCLUSIONS: Covid-19 is an emerging risk factor for the propagation of various immune-mediated diseases. Progression of disease may occur even after the infection has been cured and limited data is available regarding its relation. Early recognition and treatment can be effective life-saving measures in these patients. Reference #1: Baldi BG, Carvalho CRR, Dias OM, Marchiori E, Hochhegger B. Diffuse cystic lung diseases: differential diagnosis. J Bras Pneumol. 2017;43(2):140-149. Reference #2: Densem C, Niven R, Barber P, Bishop P. Development of cryptogenic fibrosing alveolitis during pregnancy. J R Soc Med. 1998;91(11):591-593. Reference #3: Ambardar SR, Hightower SL, Huprikar NA, Chung KK, Singhal A, Collen JF. Post-COVID-19 Pulmonary Fibrosis: Novel Sequelae of the Current Pandemic. J Clin Med. 2021;10(11):2452. Published 2021 Jun 1 DISCLOSURES: No relevant relationships by Anastasia Brit No relevant relationships by Steven Colby No relevant relationships by Patrick Koo No relevant relationships by Vishruth Vyata No relevant relationships by Harika Yadav

16.
Chest ; 162(4):A495, 2022.
Article in English | EMBASE | ID: covidwho-2060611

ABSTRACT

SESSION TITLE: Severe and Unusual Blastomycosis Infections SESSION TYPE: Rapid Fire Case Reports PRESENTED ON: 10/18/2022 12:25 pm - 01:25 pm INTRODUCTION: The diagnosis of blastomycosis is often delayed due to its non-specific symptoms and imaging findings. Clinicians must have a high clinical index of suspicion to diagnose blastomycosis in a timely manner, especially in the setting of the current COVID-19 pandemic. CASE PRESENTATION: A healthy 44-year-old male presented to an urgent care center with complaints of cough, fevers, and malaise. CT scan of the chest revealed a left upper lobe mass concerning for rounded bacterial pneumonia versus malignancy. He was found to be COVID-19 positive. The patient was sent home with steroids and antibiotics. Three months later, a repeat CT scan of the chest was obtained which revealed progression of the consolidation and prompted further evaluation at the hospital. On presentation, he reported a persistent cough, weight loss, and the development of multiple painful nodules on his extremities and trunk within the past week. A skin lesion was biopsied. A bronchoscopy was also performed for biopsy and brushing. Biopsy of the skin lesion as well as specimens collected from the bronchoscopy resulted positive for Blastomyces. MRI of the brain demonstrated multiple enhancing lesions concerning for septic emboli. He was started on amphotericin B for treatment of disseminated blastomycosis with central nervous system (CNS) involvement. Repeat imaging of the brain and chest about 3 weeks after initiation of therapy showed interval decrease in the size of the lesions. He was then transitioned to oral itraconazole and discharged home. DISCUSSION: Blastomycosis is an endemic fungal infection that can affect immunocompetent and immunocompromised hosts. It tends to infect immunocompetent hosts more so than other invasive fungal infections. Symptoms can range from asymptomatic to rapidly progressive acute respiratory distress syndrome (ARDS). Disseminated blastomycosis has been reported in 20-50% of patients (1). In the above case, an immunocompetent patient developed pulmonary and dermatologic manifestations concerning for disseminated blastomycosis. Though he had no recent travel, occupational exposures, or contact with any construction work, the patient was living in an endemic area for Blastomyces. It is difficult to definitively ascertain if the patient already had pulmonary blastomycosis when he was diagnosed with COVID-19, but his extrapulmonary manifestations clearly developed after the diagnosis. Earlier detection and treatment of the pulmonary blastomycosis may have prevented the dissemination of the disease. CONCLUSIONS: This case serves as a reminder to consider other infectious etiologies, like endemic fungal infections, in the midst of the COVID-19 pandemic to prevent delays in treatment and progression of these diseases. Reference #1: McBride JA, Gauthier GM, Klein BS. Clinical Manifestations and Treatment of Blastomycosis. Clin Chest Med. 2017 Sep;38(3):435-449. doi: 10.1016/j.ccm.2017.04.006. Epub 2017 Jun 12. PMID: 28797487;PMCID: PMC5657236. Reference #2: Cafardi J, Haas D, Lamarre T, Feinberg J. Opportunistic Fungal Infection Associated With COVID-19. Open Forum Infect Dis. 2021 Jan 18;8(7):ofab016. doi: 10.1093/ofid/ofab016. PMID: 34621913;PMCID: PMC7928619. DISCLOSURES: No relevant relationships by Shannon Burke No relevant relationships by Abigail Go No relevant relationships by Jen Minoff No relevant relationships by David Stoeckel

17.
Annual Conference of the Canadian Society of Civil Engineering , CSCE 2021 ; 249:385-394, 2023.
Article in English | Scopus | ID: covidwho-2059744

ABSTRACT

Waste management has been recognized as a real issue in the current situation due to the COVID-19 impact on people’s lifestyles. Therefore, serious actions need to be taken to control and manage this impact on the environment. One of these important environmental programs is the investigation and research of generated wastes during the pandemic. Due to the COVID-19 pandemic, the types and amounts of waste generation have changed, therefore a way forward to reduce this impact is to investigate the data that coming from landfill to devise an appropriate approach. The goal of this study is to predict the amount of construction and demolition (C&D), Grit, Asphalt waste, and Treated Biomedical waste (TBW) before, during, and after pandemic using grey systems theory. The grey model is a relatively new forecasting method that has been employed for prediction in a small amount of data and is also used for uncertain systems. In this study, the data coming from Regina landfill is used to predict the amount of wastes generated during the pandemic using the grey model. The results will be compared with the existing regression-based waste model. Different measures like mean absolute percent error (MAPE) and root mean square error (RMSE) will be used to compare and evaluate the performance of these models. Finally, the best forecasting model will be chosen to predict the amount of waste generation for the future generation. © 2023, Canadian Society for Civil Engineering.

18.
7th International Conference on Smart and Sustainable Technologies, SpliTech 2022 ; 2022.
Article in English | Scopus | ID: covidwho-2056835

ABSTRACT

The advent of the COVID-19 pandemic led to an economic crisis of the construction industry and to an increasing of energy consumption in the residential sector for all the world. These effects are added to those of climate change, requiring ever greater efficiency and sustain ability in buildings. The windows design and the windows replacement are critical aspects in the new and existing buildings, respectively. The proposed parametric analysis evaluates the effects of different window -system (thus glasses type and technology, frames and shields), conventional and innovative, on the total primary energy demand of an office, in different climatic locations. It is shown how the best configuration can be influenced by the window frame, the window orientation and the installation of internal or external shields. Considering also a smart-glass technology, the findings of this paper show that the approach adopted in a typical Mediterranean climate - where it is not enough to minimize only the energy need for heating or for cooling - is also valid in dominant heating or cooling climates. This study shows that an accurate design of windows can lead to significant savings in total primary energy. In particular, with reference to an office case study, the effect of solutions based on the solar gain control (low-e, selective glazing) was better than solutions based on the heat loss control (triple glazing), even in heating dominated climates. In Vienna and Split these configurations show the maximum total primary energy reduction, that is equal to $\approx - 38\%$ and $\approx -41\%$. compared to the base case $(\Delta \mathrm{E}_{\mathrm{P}})$, respectively. © 2022 University of Split, FESB.

19.
Construction Economics and Building ; 22(3):21-42, 2022.
Article in English | Scopus | ID: covidwho-2055995

ABSTRACT

Malaysia has seen the third wave of infection since the start of the global COVID-19 pandemic, with approximately 103 construction sites involving over 14,677 workers reported from April 2020 to February 2021. This has led to limited progress in construction projects or a complete halt, resulting in late project delivery. The purpose of this paper is to investigate the factors influencing the spread of COVID-19 and the strategies taken by the affected construction sites to mitigate the spread of the outbreak. The researchers adopted a case study approach with a multiple-case design and discusses the use of an in-depth interviewing method to collect rich data on the studied phenomenon. Data collected from three construction sites. The sites were mixed development projects in nature and provided in-depth, rigorous, and robust information. Based on the results, two categories of factors influencing the spread of COVID-19 were established. These are primary and secondary factors, such as workers’ mobilisation, uncontrolled movement of workers, and the limited practice of social distancing. Furthermore, evidence suggests that the strategies adopted to control the effects of the pandemic were a combination of government enforcement and initiatives taken by construction companies. This paper concludes that an early identification of the causes of the spread will enable appropriate implementation strategies to control the outbreak. This study is an attempt to present the experiences of one developing country as an example of a means of dealing with unexpected pandemics or other intractable diseases that can affect project delivery. © 2022 by the author(s).

20.
Sustainability ; 14(18):11783, 2022.
Article in English | ProQuest Central | ID: covidwho-2055369

ABSTRACT

The food crisis caused by the rise in grocery prices affects many countries. Added to this complex panorama is the current health situation generated by the COVID-19 pandemic. Its impact on the productive sector will be detrimental to many household incomes and food practices. The social sciences need to adopt a complex understanding of household food security (HFS) as a dynamic process of building collective nutritional knowledge and eating habits. In the case of Cuba, the burden on the agrifood system is the result of external and internal factors that affect household food sustainability. This paper, therefore, seeks to assess the social construction of HFS as a complex system in the current pandemic scenario using the municipality of Santiago de Cuba as a case study. Qualitative and quantitative methods were used. The main results obtained focus on the role played by women in food use and distribution, and the effect of food vulnerability on HFS. These results provide an analytical model for the study of the new and diverse household-food-security configurations that are emerging.

SELECTION OF CITATIONS
SEARCH DETAIL