Since it's made up of over 7,000 islands,the Philippines is not a nation with a well‑developed railway transportation.That means coach buses are going to be your best bet for getting city‑to‑city.There is a small ...Since it's made up of over 7,000 islands,the Philippines is not a nation with a well‑developed railway transportation.That means coach buses are going to be your best bet for getting city‑to‑city.There is a small light rail system called the Light Rail Transit(LRT)in the Metro Manila area,but it's desperately inefficient.展开更多
To address the challenges of long commuting times,traffic congestion,high energy consumption,and emissions in inter-city travel,a new type of flying coach has been developed.This innovation aims to significantly short...To address the challenges of long commuting times,traffic congestion,high energy consumption,and emissions in inter-city travel,a new type of flying coach has been developed.This innovation aims to significantly shorten inter-city commuting times,enhance travel efficiency,and simultaneously reduce energy consumption and emissions.The flying coach integrates rail power supply technology,an intelligent operating system,and advanced new materials,comprising a catenary power supply guide rod and various sensor components.Based on analysis of traditional aircraft design principles,the research team simulated the design of the rail-powered flying coach using software such as AutoCAD and SolidWorks for three-dimensional modeling.The analysis results indicate that,compared to traditional aircraft and rail trains,the design of the new flying coach reduces its overall weight while maintaining carrying capacity,thereby improving commuting efficiency and environmental performance.This development lays a solid foundation for creating a greener,more efficient,and convenient inter-city transportation network.展开更多
The role of coach is a significant factor for players, both mentally and physically, as the sport environment is an important social context stimulating players to develop social skills, work discipline and habits. In...The role of coach is a significant factor for players, both mentally and physically, as the sport environment is an important social context stimulating players to develop social skills, work discipline and habits. In order to achieve a quality relationship between players and coach, it is essential to create mutual trust, which is the key factor of a well-functioning team. Changing the coach changes the whole psychophysical concept of the training process, training approach, and changes the team itself. The change of coach affects the psychophysical condition of the players not because the previous coach was better or worse, but because of the change itself. Due to the new conditions, players are often distracted, anxious, and lost focus during the training. Consequently, by trying to prove themselves again and in fear of a new coach, the player may lose concentration resulting in an irregular movement balance, and due to insufficient muscle strength to overcome the external force, new injuries or reoccurrence of old injuries are possible. The most common injuries are ruptures and strains of muscles and ligaments reinforcing the most heavily stressed joint while performing a certain movement. A positive factor of having a new coach is the great need to prove oneself, especially in players that were not recognized by the previous coach. Coach changes are often counterproductive because players get used to character, tactics, training methods, and teamwork organization. Due to the new coach’s lack of knowledge about the psychophysical readiness and the ability of each individual player and his specific training methods, injuries are often inevitable.展开更多
This paper presents a requirement engineering for developing an e-coaching environment in the higher education sector. This research demonstrates that IT experts encounter challenges in establishing a system that matc...This paper presents a requirement engineering for developing an e-coaching environment in the higher education sector. This research demonstrates that IT experts encounter challenges in establishing a system that matches a university’s expectations, as they are usually uncertain about its goals and system requirements. The paper illustrates a business goal-focused requirement induction technique, which encompasses demonstrating the business procedures through Business Process Modelling Notation (BPMN), assessing the university goals via the tree diagram, and drawing out the system requirements from the university objectives through UML state diagrams. A case study of supporting the development of a new IT course is used as a case study and applied using BPMN.展开更多
For the coach industry,rapid modeling and efficient optimization methods are desirable for structure modeling and optimization based on simplified structures,especially for use early in the concept phase and with capa...For the coach industry,rapid modeling and efficient optimization methods are desirable for structure modeling and optimization based on simplified structures,especially for use early in the concept phase and with capabilities of accurately expressing the mechanical properties of structure and with flexible section forms.However,the present dimension-based methods cannot easily meet these requirements.To achieve these goals,the property-based modeling(PBM)beam modeling method is studied based on the PBM theory and in conjunction with the characteristics of coach structure of taking beam as the main component.For a beam component of concrete length,its mechanical characteristics are primarily affected by the section properties.Four section parameters are adopted to describe the mechanical properties of a beam,including the section area,the principal moments of inertia about the two principal axles,and the torsion constant of the section.Based on the equivalent stiffness strategy,expressions for the above section parameters are derived,and the PBM beam element is implemented in HyperMesh software.A case is realized using this method,in which the structure of a passenger coach is simplified.The model precision is validated by comparing the basic performance of the total structure with that of the original structure,including the bending and torsion stiffness and the first-order bending and torsional modal frequencies.Sensitivity analysis is conducted to choose design variables.The optimal Latin hypercube experiment design is adopted to sample the test points,and polynomial response surfaces are used to fit these points.To improve the bending and torsion stiffness and the first-order torsional frequency and taking the allowable maximum stresses of the braking and left turning conditions as constraints,the multi-objective optimization of the structure is conducted using the NSGA-II genetic algorithm on the ISIGHT platform.The result of the Pareto solution set is acquired,and the selection strategy of the final solution is discussed.The case study demonstrates that the mechanical performances of the structure can be well-modeled and simulated by PBM beam.Because of the merits of fewer parameters and convenience of use,this method is suitable to be applied in the concept stage.Another merit is that the optimization results are the requirements for the mechanical performance of the beam section instead of those of the shape and dimensions,bringing flexibility to the succeeding design.展开更多
The influence of flux cored arc welding （FCAW） process parameters such as welding current, travel speed, voltage and CO2 shielding gas flow rate on bowing distortion of 409M ferritic stainless steel sheets of 2 mm i...The influence of flux cored arc welding （FCAW） process parameters such as welding current, travel speed, voltage and CO2 shielding gas flow rate on bowing distortion of 409M ferritic stainless steel sheets of 2 mm in thickness was discussed. The bowing distortions of the welded plates were measured using a simple device called profile tracer. An experimental regression equation was developed to predict the bowing distortion and with this equation, it is easy to select optimized process parameters to achieve minimum bowing distortion. It is revealed that the FCAW process parameters have significant influence on bead profile and the bowing distortion.展开更多
文摘Since it's made up of over 7,000 islands,the Philippines is not a nation with a well‑developed railway transportation.That means coach buses are going to be your best bet for getting city‑to‑city.There is a small light rail system called the Light Rail Transit(LRT)in the Metro Manila area,but it's desperately inefficient.
基金College Student Innovation Training Program Project(S202410225147)。
文摘To address the challenges of long commuting times,traffic congestion,high energy consumption,and emissions in inter-city travel,a new type of flying coach has been developed.This innovation aims to significantly shorten inter-city commuting times,enhance travel efficiency,and simultaneously reduce energy consumption and emissions.The flying coach integrates rail power supply technology,an intelligent operating system,and advanced new materials,comprising a catenary power supply guide rod and various sensor components.Based on analysis of traditional aircraft design principles,the research team simulated the design of the rail-powered flying coach using software such as AutoCAD and SolidWorks for three-dimensional modeling.The analysis results indicate that,compared to traditional aircraft and rail trains,the design of the new flying coach reduces its overall weight while maintaining carrying capacity,thereby improving commuting efficiency and environmental performance.This development lays a solid foundation for creating a greener,more efficient,and convenient inter-city transportation network.
文摘The role of coach is a significant factor for players, both mentally and physically, as the sport environment is an important social context stimulating players to develop social skills, work discipline and habits. In order to achieve a quality relationship between players and coach, it is essential to create mutual trust, which is the key factor of a well-functioning team. Changing the coach changes the whole psychophysical concept of the training process, training approach, and changes the team itself. The change of coach affects the psychophysical condition of the players not because the previous coach was better or worse, but because of the change itself. Due to the new conditions, players are often distracted, anxious, and lost focus during the training. Consequently, by trying to prove themselves again and in fear of a new coach, the player may lose concentration resulting in an irregular movement balance, and due to insufficient muscle strength to overcome the external force, new injuries or reoccurrence of old injuries are possible. The most common injuries are ruptures and strains of muscles and ligaments reinforcing the most heavily stressed joint while performing a certain movement. A positive factor of having a new coach is the great need to prove oneself, especially in players that were not recognized by the previous coach. Coach changes are often counterproductive because players get used to character, tactics, training methods, and teamwork organization. Due to the new coach’s lack of knowledge about the psychophysical readiness and the ability of each individual player and his specific training methods, injuries are often inevitable.
文摘This paper presents a requirement engineering for developing an e-coaching environment in the higher education sector. This research demonstrates that IT experts encounter challenges in establishing a system that matches a university’s expectations, as they are usually uncertain about its goals and system requirements. The paper illustrates a business goal-focused requirement induction technique, which encompasses demonstrating the business procedures through Business Process Modelling Notation (BPMN), assessing the university goals via the tree diagram, and drawing out the system requirements from the university objectives through UML state diagrams. A case study of supporting the development of a new IT course is used as a case study and applied using BPMN.
文摘For the coach industry,rapid modeling and efficient optimization methods are desirable for structure modeling and optimization based on simplified structures,especially for use early in the concept phase and with capabilities of accurately expressing the mechanical properties of structure and with flexible section forms.However,the present dimension-based methods cannot easily meet these requirements.To achieve these goals,the property-based modeling(PBM)beam modeling method is studied based on the PBM theory and in conjunction with the characteristics of coach structure of taking beam as the main component.For a beam component of concrete length,its mechanical characteristics are primarily affected by the section properties.Four section parameters are adopted to describe the mechanical properties of a beam,including the section area,the principal moments of inertia about the two principal axles,and the torsion constant of the section.Based on the equivalent stiffness strategy,expressions for the above section parameters are derived,and the PBM beam element is implemented in HyperMesh software.A case is realized using this method,in which the structure of a passenger coach is simplified.The model precision is validated by comparing the basic performance of the total structure with that of the original structure,including the bending and torsion stiffness and the first-order bending and torsional modal frequencies.Sensitivity analysis is conducted to choose design variables.The optimal Latin hypercube experiment design is adopted to sample the test points,and polynomial response surfaces are used to fit these points.To improve the bending and torsion stiffness and the first-order torsional frequency and taking the allowable maximum stresses of the braking and left turning conditions as constraints,the multi-objective optimization of the structure is conducted using the NSGA-II genetic algorithm on the ISIGHT platform.The result of the Pareto solution set is acquired,and the selection strategy of the final solution is discussed.The case study demonstrates that the mechanical performances of the structure can be well-modeled and simulated by PBM beam.Because of the merits of fewer parameters and convenience of use,this method is suitable to be applied in the concept stage.Another merit is that the optimization results are the requirements for the mechanical performance of the beam section instead of those of the shape and dimensions,bringing flexibility to the succeeding design.
文摘The influence of flux cored arc welding （FCAW） process parameters such as welding current, travel speed, voltage and CO2 shielding gas flow rate on bowing distortion of 409M ferritic stainless steel sheets of 2 mm in thickness was discussed. The bowing distortions of the welded plates were measured using a simple device called profile tracer. An experimental regression equation was developed to predict the bowing distortion and with this equation, it is easy to select optimized process parameters to achieve minimum bowing distortion. It is revealed that the FCAW process parameters have significant influence on bead profile and the bowing distortion.
