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Showing 3 results for Ghofrani
Assessing the appropriateness of educational furniture with body size of students in Yazd
Mohammad Ghofrani, Habib Noori, Ahmad Roshan Bakhsh Yazdi,
Volume 2, Issue 3 (Journal of Ergonomics 2014)
Abstract
 

Introduction: Due to the deleterious effects of mismatch between body dimensions of students and educational furniture, this study aimed to assess the size of students’ body in Yazd.

Material and Methods: The study population included all high school students in Yazd city. Popliteal height, buttock-popliteal length, elbow rest height, hips width, thighs thickness and scapular elevation were measured in 307 students. Besides, in furniture used in the schools studied, two chairs and two benches that had a greater frequency of analysis were chosen.

Results: The results of the statistical comparisons showed that type 1 furniture, seat width was acceptable for 96.74% and thigh freedom was 100% fit. The type 2 furniture depth for most students was appropriate, and seat width was acceptable for 96.42% of students. Thigh freedom was fit for 100% with a good rating. In type 3 furniture, there was not any parameter with good fit and in type 4 furniture, wide seat width and thigh freedom was desirable.

Conclusions: In general, the furniture conformity with students’ anthropometry was not desirable.


Designing and Manufacturing of Ergonomic Training Furniture for Mapping Based on the Physical Dimensions of Male Students: A Case Study of Mashhad Art Schools)
Mohammad Ghofrani, Majid Motamedzade, Mohammad Reza Aghaie, Zahra Mohammad Moradi,
Volume 7, Issue 3 (Iranian Journal of Ergonomics 2019)
Abstract

Background and Objectives: The statics and actions of people during daily activities plays a major role in the physical and mental health and dynamics of the community. Given that humans deal with different things in a day, it is necessary that they are adapted to his features of body. The main goal of this study is to design and construct tables and ergonomic chairs for cartography, in accordance with the physical dimensions of students.
Methods: In this research, one of the most used educational furniture, namely cartographic table and chairs, has been studied. After examining the satisfaction of this furniture, for ergonomic review and design in accordance with anthropometric dimensions, physical features of 160 students of art and 40 students of a technical and vocational school were measured. Then data was analyzed by SPSS 18 software.
Results: According to the results, about 70 percent of the students did not feel comfortable with the features of former chair and table, except for the length of the thigh. There was no significant difference between the different educational foundations in the vocational schools and finally, with the help of tonality features, the drawing table and chair were designed which except for the height of the sitting space, in other indices, there was a 100% correlation with the dimensions of the student's body.
Conclusion: In this study, there was a lot of dissatisfaction among students due to the lack of matching these educational materials with their physical dimensions which has caused physical, mental and psychological damage and poor quality of education. At the end of the study, through ergonomic design, matters of satisfaction, sustainability and reduced production costs and also the reasons for students' dissatisfaction with the drawing table and chairs is presented.


Use of Standards and Ergonomics Principles Evaluation in Iran Furniture Industry (A Case Study: Manufacturing Units Of Tehran Province)
Anooshe Fazeli, Hassan Ghasembeygi, Mohammad Ghofrani,
Volume 9, Issue 1 (Iranian Journal of Ergonomics 2021)
Abstract
Background and Objectives: During the past times people have used furniture as today. Along with the social welfare development and the importance of manufacturing efficiency, the importance of ergonomics and standardization in furniture became very clear so that, today it is well-known that not considering human factors in furniture manufacturing causes much human health problems. Due to the importance of furniture standardization, the present study was conducted to investigate the use of standards in furniture manufacturing units in Tehran province.
Methods: In this study, cluster sampling was performed and questionnaires were distributed among experienced manufacturers of sixty furniture manufacturing units. Statistical analysis was performed using One sample student t-test and Friedman test in SPSS 18 software.
Results: Results revealed that there was a significant difference between the indices mean and the hypothesized mean of the population. Furniture manufacturers believed that the governmental and nongovernmental institutions have appeared weak on updating furniture standards and making manufacturers familiar with standards. From their point of view, consumers have shown a great trend to buy standard and ergonomic furniture. Manufacturers also have largely tended so much to use standards and national standards conformed by  international standards.
Conclusion: The manufacturing of standard furniture increases the consumer interest to buy furniture and it increases the consumer satisfaction. The high quality of imported raw materials makes furniture competitive and it causes coordination with international standards and it can assure the successful export of furniture in Iran. Successful furniture manufacturing will depend on realization of all indices mentioned in the present study.

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