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Occupational ergonomics is responsible for the relationship between the worker and the machine in the work environment to achieve smooth، comfortable and safe performance، and therefore professional ergonomics for digital manufacturing is concerned with clarifying the relationship between digital production machines and the worker in the work environment to achieve the best quality and performance. The research problem can be expressed through the following questions: - What is the extent of ergonomic compatibility between digital production machines and technicians working on them in the field of metal furniture production? Is it possible to improve this ergonomic compatibility using professional ergonomics standards in order to achieve the best quality and safety for technicians working in this field? The research aims to determine the occupational ergonomics standards that govern the relationship between the machines of digital production systems for metal furniture and the technicians working on them. In order to improve the compatibility between digital production machines and technicians to achieve the best quality and safety in the work environment. The research uses the descriptive analytical method to monitor the relationship between the machines of digital production systems and the technicians working on them and analyze this relationship to come up with ergonomic criteria governing this mutual relationship to achieve the best quality and safety in the work environment. Through several axes:- First: The emergence and concept of digital manufacturing - Second: Professional ergonomics and its link to digital manufacturing machines - Third: Conclusion of professional ergonomics standards for digital manufacturing - The research reached a number of results and recommendations، including:- occupational ergonomics for digital manufacturing is one of the most important modern requirements due to the shift towards the digital age in manufacturing، which necessitated the presence of ergonomic factors that achieve ergonomic controls and standards that suit the good performance of jobs and their suitability with the worker or operator and digital machines.- Conducting more studies on the applications of ergonomics in the digital age and the consequent difference in ergonomic requirements and standards that suit new tasks.

With the passage of time, the problems of preserving the archaeological heritage are increasing, so scientists have begun to search for new, unconventional methods of simulation, reproduction, and preservation of it, and furniture is one of the most important examples included in cultural heritage.In recent years, interest in digital manufacturing has increased, which depends mainly on the presence of computers, and many digital mechanisms have been deployed that serve design in general and interior design in particular, and from here the idea of research emerged that discusses the possibility of adopting design models that simulate heritage furniture through a computer, It is digitally produced and re-manufactured again. The research was conducted in three stages as follows:First theoretical study in which an extensive theoretical study was conducted for scientific research and messages in the period from 2009 to 2019 within the constituent environments of the research elements, then a theoretical study of digital modeling was conducted as one of the axes of the research topic, then how to simulate the work of existing furniture, and also discuss simulation methods and choose the method Optimal among them, and finally discussing digital manufacturing and knowing the digital technologies used in manufacturing, so we finally get a set of mechanisms and tools that can be used in preparing a standard model for use in analytical study.Second: An analytical study in which a number of samples were selected for pieces of historical furniture in which the method of digital modeling was applied to them taking into account the diversity of those samples in terms of the historical period between the ancient and classic Egyptian, and also in terms of function, then researching the possibility of digital manufacturing of those samples that have been Its model.Third: The applied study and the results in which the researcher presents the most important results related to the effect of using digital modeling on simulating classic furniture and digitally recycling it.key words :Simulation - Modeling - Historic Furniture - Digital Manufacturing - 3D Printing

This study aims at shedding light on how to employ the thought of the labyrinth in architecture and interior design by identifying the labyrinth and its different types and applications, and the knowledge of the foundations and the possibility of formation and planning in the concept of the labyrinth and how to draw inspiration from them in the design process and know the types of movement associated with their design, public parks with a clarification of the role of digital technology in design and manufacturing, hence the study on the problem of lack of awareness of the importance of the thought of the labyrinth design and its pros and cons of serving functionality requirements of the design process in addition to the lack of recognition of modern methods in the design and implementation available because of the technological development The importance of the study is how to achieve the positive effect of the recipient through the application of the design labyrinth thinking according to the nature of the functional activity using digital manufacturing technology in the design and implementation. The study aimed to emphasize the contemporary design formulation inspired by the labyrinth thought in design in general and internal design in particular. With the development of conceptual and imaginative abilities of the designer of architecture and interior design using the design thought and used in the study the analytical descriptive method of labyrinth thought through its different kinds and design styles and its impact on the achievement of creative creativity and the positive impact of the recipient through different functional spaces.