This paper presents the design of a computational software system that enables solutions of multi-phase and multi-scale problems in mechanics. It demonstrated how mechanicians can design “process-driven” software sy...This paper presents the design of a computational software system that enables solutions of multi-phase and multi-scale problems in mechanics. It demonstrated how mechanicians can design “process-driven” software systems directly, and that such efforts are more suitable in solving multi-phase or multi-scale problems, rather than utilizing the “data-driven” approaches of legacy network systems. Specifically, this paper demonstrates how this approach can be used to solve problems in flexible dynamics. Then it suggests a view of mechanics algorithms as ‘state equilibrium’ enforcers residing as servers, rather than as computer programs that solve field equations. It puts forth the need for identical input/output files to ensure widespread deployment on laptops. Then it presents an assessment of the laptop platform. A software system such as the one presented here can also be used to supply virtual environments, animations and entertainment/education software with physics.展开更多
To achieve a sustainable development in the electronic and electrical equipment(EEE) industry, it is necessary to protect the available natural resources.In addition, to satisfy the increasing demand on EEE, it is nec...To achieve a sustainable development in the electronic and electrical equipment(EEE) industry, it is necessary to protect the available natural resources.In addition, to satisfy the increasing demand on EEE, it is necessary to provide alternative sources of raw materials.In this paper, laptops were imported to Jordan in 2011 as an example to show the potential recovery of metals and precious metals from high grade waste electronic and electrical equipment by conducting a mass flow rate analysis using the STAN program.The results show that considerable amounts of gold, silver, cobalt, palladium,and copper could be recovered.This will reduce the amounts needed from primary natural resources and offset the CO2 emissions produced from mining the primary raw material resources.展开更多
Laptop computers are used more often than desktop computers, especially among graduate students. Many common laptop habits can have severe physiological effects on the user ranging from eye strain, poor posture, upper...Laptop computers are used more often than desktop computers, especially among graduate students. Many common laptop habits can have severe physiological effects on the user ranging from eye strain, poor posture, upper extremity pain, and overuse injuries. Thus, it is important to educate students on the best ergonomic position to use laptops. This study investigates the efficacy of a laptop ergonomic education session and its effects on graduate students’ knowledge and behaviors regarding proper laptop use. A convenience sample of control and experimental groups was used and consisted of 83 occupational therapy (OT), 63 physical therapy (PT), and 26 nurse anesthesia (NA) graduate students. The sample size was 172, with 94 graduate students in the control group and 78 graduate students in the experimental. All study participants completed an initial ergonomics questionnaire. The experimental group was given an ergonomics education session following the questionnaire. Approximately 4 weeks after both groups completed the initial questionnaire;a follow up questionnaire was administered. Results showed that subjects demonstrated a statistically significant improvement in ergonomics knowledge after they completed the ergonomic educational session. Some participants reported making adaptations to laptop positioning and equipment use following the educational session. Thus, participating in ergonomic education can positively influence awareness of body mechanics relative to laptop workstation design.展开更多
Functional testing is key to fulfill quality control in laptop manufacturing and is of great economic value.However,due to the unavailability of practical data,mathematical model and systematic perspective,it has bare...Functional testing is key to fulfill quality control in laptop manufacturing and is of great economic value.However,due to the unavailability of practical data,mathematical model and systematic perspective,it has barely been touched from the academic community to date.For the first time,this work provides technical understanding of the key principles of functional testing,mathematically models the general framework,elucidates existing testing strategy under the proposed framework and model,and finally proposes a specified optimization strategy which outperforms existing strategies.This work lays the model foundation for the further optimization of functional testing,and can be regarded as a good example of how a systematic approach can solve practical industrial challenges.展开更多
文摘This paper presents the design of a computational software system that enables solutions of multi-phase and multi-scale problems in mechanics. It demonstrated how mechanicians can design “process-driven” software systems directly, and that such efforts are more suitable in solving multi-phase or multi-scale problems, rather than utilizing the “data-driven” approaches of legacy network systems. Specifically, this paper demonstrates how this approach can be used to solve problems in flexible dynamics. Then it suggests a view of mechanics algorithms as ‘state equilibrium’ enforcers residing as servers, rather than as computer programs that solve field equations. It puts forth the need for identical input/output files to ensure widespread deployment on laptops. Then it presents an assessment of the laptop platform. A software system such as the one presented here can also be used to supply virtual environments, animations and entertainment/education software with physics.
文摘To achieve a sustainable development in the electronic and electrical equipment(EEE) industry, it is necessary to protect the available natural resources.In addition, to satisfy the increasing demand on EEE, it is necessary to provide alternative sources of raw materials.In this paper, laptops were imported to Jordan in 2011 as an example to show the potential recovery of metals and precious metals from high grade waste electronic and electrical equipment by conducting a mass flow rate analysis using the STAN program.The results show that considerable amounts of gold, silver, cobalt, palladium,and copper could be recovered.This will reduce the amounts needed from primary natural resources and offset the CO2 emissions produced from mining the primary raw material resources.
文摘Laptop computers are used more often than desktop computers, especially among graduate students. Many common laptop habits can have severe physiological effects on the user ranging from eye strain, poor posture, upper extremity pain, and overuse injuries. Thus, it is important to educate students on the best ergonomic position to use laptops. This study investigates the efficacy of a laptop ergonomic education session and its effects on graduate students’ knowledge and behaviors regarding proper laptop use. A convenience sample of control and experimental groups was used and consisted of 83 occupational therapy (OT), 63 physical therapy (PT), and 26 nurse anesthesia (NA) graduate students. The sample size was 172, with 94 graduate students in the control group and 78 graduate students in the experimental. All study participants completed an initial ergonomics questionnaire. The experimental group was given an ergonomics education session following the questionnaire. Approximately 4 weeks after both groups completed the initial questionnaire;a follow up questionnaire was administered. Results showed that subjects demonstrated a statistically significant improvement in ergonomics knowledge after they completed the ergonomic educational session. Some participants reported making adaptations to laptop positioning and equipment use following the educational session. Thus, participating in ergonomic education can positively influence awareness of body mechanics relative to laptop workstation design.
基金supported by the Key Research and Development Program of Anhui under Grant No.202104a05020064。
文摘Functional testing is key to fulfill quality control in laptop manufacturing and is of great economic value.However,due to the unavailability of practical data,mathematical model and systematic perspective,it has barely been touched from the academic community to date.For the first time,this work provides technical understanding of the key principles of functional testing,mathematically models the general framework,elucidates existing testing strategy under the proposed framework and model,and finally proposes a specified optimization strategy which outperforms existing strategies.This work lays the model foundation for the further optimization of functional testing,and can be regarded as a good example of how a systematic approach can solve practical industrial challenges.
