scholarly journals Identification of Methods of Reducing Construction Waste in Construction Enterprises Based on Surveys

2021 ◽  
Vol 13 (17) ◽  
pp. 9888
Author(s):  
Marta Białko ◽  
Bożena Hoła
Keyword(s):  
United Arab Emirates ◽  
Alternative Hypothesis ◽  
Waste Reduction ◽  
Chi Square ◽  
Construction Waste ◽  
Construction Enterprise ◽  
Construction Enterprises ◽  
Chi Square Test ◽  
Level Of Significance ◽  
Construction Product

The article presents the analysis of the dependence between methods of reducing construction waste and the size of the construction enterprise. The analysis was carried out for the following construction products: steel, concrete, wood, and small-sized (ceramic, concrete) and finishing (ceramic and stone tiles) products. Based on the literature review, the 13 most frequently used methods of reducing construction waste were identified. Surveys were then conducted among 140 construction enterprises. The research was conducted in Sharjah in the United Arab Emirates. In order to test whether there is a relationship between the used waste-reduction method for a given construction product and the size of the enterprise, the Pearson chi-square test of independence was used. The null hypothesis and the alternative hypothesis were formulated, and the critical level of significance α = 0.05 was adopted. The results were statistically significant for 7 methods of reducing construction waste. The identified methods include appropriate storage, the training of employees in the field of waste management, the use of monitoring systems, the appropriate transport and unloading of products, the appropriate involvement of subcontractors, the use of prefabricated elements, and the reuse of products on the construction site. Based on the conducted research, it was found that these methods are more often used with an increase in the size of the enterprise. The presented analysis emphasizes the urgent need to improve, integrate, and adjust the promotion of both the reduction of construction waste and the benefits of this reduction in construction enterprises, especially those of the smallest size.

scholarly journals HANDLING DISTRUST ON RISK COMMUNICATION IN NIGERIA: A STRATEGY TO STRENGTHENING THE COVID-19 OUTBREAK RESPONSE

2021 ◽  
pp. 1-22
Author(s):  
Olayinka Stephen Ilesanmi ◽  
Priscilla Onaopemipo Akosile ◽  
Aanuoluwapo Adeyimika Afolabi ◽  
Victor Okoliko Ukwenya
Keyword(s):  
Risk Communication ◽  
Cross Sectional Study ◽  
Outbreak Response ◽  
Community Members ◽  
Chi Square ◽  
Cross Sectional ◽  
Policy Makers ◽  
Chi Square Test ◽  
Level Of Significance ◽  
High Level

Abstract Background This study aimed to assess the level of trust in the COVID-19 risk communication efforts in Nigeria. Methods We conducted a descriptive cross-sectional study among community members aged 15 years and above in Ondo state in October, 2020. Data were collected using an interviewer-administered questionnaire. Data were analyzed using SPSS version 22. Descriptive statistics were summarized using frequencies. Trust was ranked from “1” implying “Low level of trust” to “7” denoting “High level of trust”. We conducted bivariate Chi-square test on respondents’ level of trust in the Nigeria Centre for Disease Control (NCDC) and socio-demographic characteristics. The level of significance was set at p<0.05. Results Among the 691 respondents, 244 (35.3%) were aged 21 to 29 years, and 304 (51.4%) used the NCDC to obtain COVID-19 knowledge. Overall, 205 (41.8%) had high level of trust in the NCDC. Furthermore, 51 (51.5%) individuals aged 30-39 years had high level of trust in the NCDC (ᵡ2=17.455, p= 0.001). Also, 114 (48.5%) persons who lived with children below 18 years had high level of trust in the NCDC (ᵡ2= 8.266, p= 0.004). Conclusion Policy makers should prioritize the involvement of young and educated persons in COVID-19 risk communication strategies.

scholarly journals The perception of COVID-19 among Italian dental patients: an orthodontic point of view

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Stefano Martina ◽  
Alessandra Amato ◽  
Paolo Faccioni ◽  
Alfredo Iandolo ◽  
Massimo Amato ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Point Of View ◽  
Dental Practice ◽  
Online Questionnaire ◽  
Chi Square ◽  
Dental Patients ◽  
Patient Health ◽  
Chi Square Test ◽  
Orthodontic Patients ◽  
Level Of Significance

Abstract Background The present study aimed to investigate the patients’ perception of the dental practice during the COVID-19 outbreak, and whether the pandemic will affect the attendance of orthodontic patients at the dental practice. An online questionnaire, including the Patient Health Questionnaire-4 (PHQ-4), was submitted to Italian dental patients with items about their perceived risks when going to the dentist, concerns about continuing orthodontic treatment, and the onset of temporomandibular disorders (TMD). Data were analyzed with a chi-square test and logistic regression analysis. The level of significance was set at P < 0.05. Results A total of 1566 subjects completed the survey, including 486 who were under orthodontic treatment or who had a child in orthodontic treatment. A total of 866 participants (55.3%) thought the risk of contracting the COVID-19 infection was higher in a dental practice; this perception was associated with gender (women more than man), age (over 60 years old) and high levels of distress (P<0.001). However, 894 patients (57.1%) felt comfortable going back to the dentist. Most of the orthodontic patients (84%) would continue their treatment. After the lockdown, there was a slight increase in the frequency of TMD pain (356 versus 334). Conclusions Most of the participants believed that the dental practice is a place at greater risk of contracting COVID-19, even if they continue to go to the dentist. Gender, age, and the level of distress were associated with the increase in the fear of going to the dentist due to COVID-19. Because of the pandemic, 16% of patients undergoing orthodontic treatment would not return to the dental practice to continue their orthodontic treatment after the lockdown. The prevalence of TMD pain in the population increased due to the pandemic.

Children’s perception towards parents on learning Mathematics in Sindhuli district

2021 ◽  
Vol 2 (01) ◽  
pp. 50-60
Author(s):  
Yam Prasad Pandeya
Keyword(s):  
Parent Involvement ◽  
Total Population ◽  
Vital Role ◽  
Mathematical Achievement ◽  
Chi Square ◽  
Course Of Action ◽  
Learning Mathematics ◽  
Chi Square Test ◽  
Level Of Significance ◽  
Structured Questionnaire

Parental factors play vital role in academic attainment of their offspring. Motivation and counseling stimulate someone to take a desired course of action. This paper attempts to explore the perception of children towards their patents in support, involvement, counseling, and motivation on learning mathematics. This study employed survey research design of the quantitative approach. The total population of the study was90 students (15 students from each six schools) enrolled in Grade ix of Sindhuli district in 2019. The data were collected through self-structured questionnaire using three points-Likert scale items. Mean and standard deviation of each item were calculated and Chi-square test at 5% level of significance was used to test the hypothesis. The finding of this study shows that the parents of Sindhuli district are very conscious about the study of their children whatever their educational level. This study suggests that parent involvement is an inseparable component to promote mathematical achievement of their offspring.

scholarly journals Classroom Attentiveness of Children from Home with Inter Parental Violence in Chamwino District, Tanzania

2021 ◽  
Vol 2 (Issue 4) ◽  
pp. 66-74
Author(s):  
Simion Kaminyoge Ambakisye
Keyword(s):  
Teaching And Learning ◽  
Survey Design ◽  
Cross Sectional Survey ◽  
Chi Square ◽  
Cross Sectional ◽  
Parental Violence ◽  
Chi Square Test ◽  
Level Of Significance ◽  
Parental Conflicts ◽  
The Relationship

This study investigated on classroom attentiveness of children from home with inter parental violence in Chamwino, Dodoma, Tanzania. The study employed the cross-sectional survey design whereby 312 out of 652 children from five secondary schools were randomly selected to participate by filling the questionnaire. Chi square test was employed to determine the relationship between violence against mothers and children’s attentiveness at the 0.05 level of significance. The results indicated a significant relationship between parental conflicts and lack of pupils’ adequate concentration in learning. The findings further showed that female children whose mothers are accustomed to violence are more inattentive than male children during the teaching and learning processes. The study recommends that effective intervention strategies such as developing training through psycho education within families, schools and the community be in place.

Attitude of Female Students Towards Physical Education and Sports

2020 ◽  
Vol 9 (1) ◽  
pp. 65-70
Author(s):  
Pashupati Adhikari
Keyword(s):  
Physical Education ◽  
Data Collection ◽  
Female Students ◽  
Degree Of Freedom ◽  
Chi Square ◽  
Positive Attitudes ◽  
Chi Square Test ◽  
Level Of Significance ◽  
The University ◽  
Very High

 This study presents an attitude of female students studying B.Ed. third year towards physical education and sports within Kathmandu valley. Initially, it was hypothesized that there is no significance difference in attitude of physical education and sports among female students of different campuses. From these 6 campuses, 184 female students were randomly selected. A five-point Likert-type scale was applied for data collection from the selected students who studied in B.Ed. third year. Altogether five opinion statements were used for data collection. It was found that all respondents showed positive attitudes towards physical education and sports. In order to test whether there is significant interdependence in score among the respondents in different perspectives. The chi-square test score was applied as statistical test at the 0.05 level of significance. The chi-test under contingency table: independent of opinion among the respondent, if (χ2>α=0.05 in different degree of freedom) and independent if (χ2≤ α=0.05 in different degree of freedom). For the measurement of attitude for physical education and sports,it has enough evidence in the data to accept alternatives hypothesis; there is relation or interdependence of attitude towards physical education and sports among the respondents. Because, the score is very high among the response of respondent. The study suggests that the university teacher must be accountable to construct professional environment.

scholarly journals Prevalência de lesões em atletas de Brazilian jiu-jitsu: comparação entre diferentes níveis competitivos

2018 ◽  
Vol 20 (3) ◽  
pp. 280-289 ◽  
Author(s):  
Jorge Nelson da Silva Júnior ◽  
Rafael Lima Kons ◽  
Rodolfo André Dellagrana ◽  
Daniele Detanico
Keyword(s):  
Logistic Regression ◽  
Regression Analysis ◽  
Odds Ratio ◽  
Injury Severity ◽  
Chi Square ◽  
Risk Of Injury ◽  
Injury Occurrence ◽  
High Prevalence ◽  
Chi Square Test ◽  
Level Of Significance

This study aimed to identify types and sites of body injury, location of injury occurrence, and the mechanism and severity of injuries in novice and advanced Brazilian jiu-jitsu (BJJ) athletes. One hundred and eight BJJ athletes took part in this study separated in two groups: advanced (n = 53) and novice (n = 55). Athletes answered a questionnaire concerning regions of injury, locality of occurrence, injury severity and mechanism. Chi square test and a logistic regression analysis were used with the level of significance set at p < 0.05. The main results showed that shoulders and knees were the most injury location reported by novice and advanced athletes. Novice athletes demonstrated higher prevalence of injuries during training sessions (54.5%), whereas advanced athletes reported more injuries during competitions (66.1%). Significant associations between novice and advanced athletes were observed for major joints (p < 0.05). The odds ratio of having injury was 70-87% less for novice versus advanced athletes for the major joints cited. We concluded that BJJ athletes demonstrate high prevalence of injury mainly at knee and shoulder. While risk of injury appeared less in novice, the advanced demonstrated higher number of injuries during competitions as a consequence of injured joint keys. By contrast, novice athletes reported higher number of injuries associated with training sessions as a consequence of overuse.

scholarly journals Incidence of periodontal compromise in teeth indicated for undergoing endodontic treatment: A clinical study

2018 ◽  
Vol 12 (03) ◽  
pp. 334-337
Author(s):  
Ricardo Machado ◽  
Monique Muniz da Cunha ◽  
Daniel Comparin ◽  
Leopoldo Cosme-Silva ◽  
Eduardo Donato Eing Engelke Back ◽  
...  
Keyword(s):  
Clinical Study ◽  
Female Gender ◽  
Male Gender ◽  
Endodontic Treatment ◽  
Chi Square ◽  
Periodontal Status ◽  
Probing Depth ◽  
Significant Difference ◽  
Chi Square Test ◽  
Level Of Significance

ABSTRACT Objective: The aim of this study was to evaluate the periodontal status of teeth indicated for undergoing endodontic treatment. Materials and Methods: Two hundred and nine teeth were evaluated using probing depth tests at three vestibular and three palatine/lingual sites before the patients underwent treatment. Teeth that presented up to 3-mm probing depth were considered as healthy. Those that presented at least one site with probing depth >3 mm were considered periodontally compromised. The data were statistically analyzed by means of applying the Chi-square test, with a level of significance of 5%. Results: Of the total of 209 teeth evaluated, 40 (19.10%) presented periodontal compromise. There was statistically significant difference related to the compromised teeth of patients of the female gender (22.80%) compared with teeth of patients of the male gender (12.30%) (P < 0.05). Conclusions: Fewer than 20% of the teeth evaluated presented a periodontal compromise. Patients of the female gender presented a higher number of periodontally compromised teeth than patients of the male gender.

scholarly journals Dental prosthetic status and treatment needs of adult population in Jizan, Saudi Arabia: A survey report

2016 ◽  
Vol 10 (04) ◽  
pp. 459-463 ◽  
Author(s):  
Syed Ali Peeran ◽  
Fuad Al Sanabani ◽  
Bandar M. A. AL-Makramani ◽  
Elfatih Ibrahim Elamin
Keyword(s):  
Saudi Arabia ◽  
Adult Population ◽  
Univariate Analysis ◽  
Treatment Needs ◽  
Chi Square ◽  
Treatment Need ◽  
Survey Report ◽  
Chi Square Test ◽  
Prosthetic Status ◽  
Level Of Significance

ABSTRACT Objectives: The study aimed to evaluate and compare the dental prosthetic status and treatment needs of adult population in Jizan, Saudi Arabia, in relation to the age. Materials and Methods: A total of 1779 people aged 35–74 years from 4 survey areas (Hay al matar, Mahata khams, Dara ut tawhid, and Suq ad dakhili) selected through convenient sampling, around Jizan University, were surveyed, using the WHO survey criteria, 1997. Statistical Analysis: Number and percentages were calculated, and univariate analysis was performed using Chi-square test at 5% level of significance. Results: Different forms of prosthesis were present among patients in the upper (19.9%) and lower (19%) arches, respectively. Prosthetic treatment need was recognized in subjects, 56.4% for the upper and 57.2% for the lower arches, respectively. The prosthetic status and treatment needs differed statistically with respect to age. Conclusion: More than half of the surveyed adult populations were in need of some or the other forms of prosthesis. This study provides data for an oral health-care provider program for Jizan.

scholarly journals Detection of Root Canal Isthmuses in Molars by Map-Reading Dynamic using CBCT images

2013 ◽  
Vol 24 (6) ◽  
pp. 569-574 ◽  
Author(s):  
Jesus Djalma Pecora ◽  
Carlos Estrela ◽  
Mike Reis Bueno ◽  
Olavo Cesar Porto ◽  
Ana Helena Goncalves Alencar ◽  
...  
Keyword(s):  
Ex Vivo ◽  
Chi Square ◽  
Map Reading ◽  
Mandibular Molars ◽  
In Vivo Assay ◽  
Apical Direction ◽  
Chi Square Test ◽  
Level Of Significance ◽  
Ex Vivo Assay

The aim of this study was to detect root isthmuses in maxillary and mandibular molars and evaluate their frequencies using map-reading dynamics in CBCT images. Two hundred extracted human maxillary and mandibular molars were used in ex vivo assay. A consecutive sample of two hundred maxillary and mandibular molars (first and second) was selected from CBCT exams. The isthmuses were detected from the pulp orifice to the apex and were recorded according to their beginning and their end, into categories: 1. begin and end in cervical third; 2. beginning in cervical third and end in middle third; 3. beginning in cervical third and end in apical third; 4. beginning and end in middle third; 5. begin in middle third and end in apical third; 6. beginning and end in apical third; 7. no isthmus. The scans were obtained in different planes with map-reading in axial slices of 0.5 mm/0.5 mm involved the coronal to apical direction. The frequencies of isthmus were analyzed according to the level of root and evaluated by Chi-square test. The level of significance was set at α=0.05. The presence of isthmus detected in maxillary molars was 86% in ex vivo assay and 62% in vivo assay, whereas in mandibular molars was observed 70% in ex vivo assay and 72% in vivo assay. The frequency of isthmus was high in both study models. The map-reading dynamics in CBCT images was found to be precise to detect the localization of isthmus.

scholarly journals The Importance Of A Consultation Liaison Psychiatry Service In General Hospitals: A Brazilian 6-Years Experience

2021 ◽  
Author(s):  
Yoichi Takaki Konno ◽  
Fernanda Menezes de Faria ◽  
Gisele Zocoller Seno ◽  
Vinicius dos Santos Sguerri ◽  
Ana Carolina Gonçalves Olmos ◽  
...  
Keyword(s):  
Medical Records ◽  
Treatment Plan ◽  
Demographic Data ◽  
Liaison Psychiatry ◽  
Chi Square ◽  
General Hospitals ◽  
Significant Difference ◽  
Chi Square Test ◽  
Consultation Liaison Psychiatry ◽  
Level Of Significance

Abstract Background: The importance of consultation-liaison psychiatry (CLP) services have been progressively growing in all general hospitals.Methods: Data were collected from medical records of patients treated by the CLP service, from 2014 to 2020, including clinical-demographic data, characteristics of hospitalization, reason for request, treatment plan, and clinical outcome. For these analyses, the chi-square test, z-test, and Kruskal-Wallis test were used. The level of significance was set at 5%.Results: A total of 2,742 consultation requests were evaluated by the psychiatry team. The number of requests made grew by 109.64% over the years. In 58.21% of cases, the patient was in the ward, and 33% were requested by Internal Medicine. There was a statistically significant difference (p <0.001) in the distribution of reasons for request according to patients' characterization variables.Conclusions: This study sought to analyze the functioning and growth of CLP in a tertiary Brazilian general hospital. The present findings reinforce the importance of this service and the need to implement and develop CLP in general hospitals.

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