Biological water striders have advantages such as flexible movement,low disturbance to the water surface,and low noise.Researchers have developed a large number of biomimetic water strider robots based on their moveme...Biological water striders have advantages such as flexible movement,low disturbance to the water surface,and low noise.Researchers have developed a large number of biomimetic water strider robots based on their movement mechanism,which have broad application prospects in water quality testing,water surface reconnaissance,and search.This article mainly reviews the research progress of biomimetic water strider robots.First,the biological and kinematic characteristics of water striders are outlined,and some mechanical parameters of biological water striders are summarized.The basic equations of water strider movement are then described.Next,an overview is given of the past and current work on skating and jumping movements of biomimetic water strider robots based on surface tension and water pressure dominance.Based on the current research status of biomimetic water strider robots,the shortcomings of current research on biomimetic water striders are summarized,and the future development of biomimetic water strider robots is discussed.This article provides new insights for the design of biomimetic water strider robots.展开更多
Normization, i.e., the system of norms is a structure that defines the group of elements containing the norm values for the requirements of a certain resource. Resources comprise of materials, machines and labor. All ...Normization, i.e., the system of norms is a structure that defines the group of elements containing the norm values for the requirements of a certain resource. Resources comprise of materials, machines and labor. All the requirements of the measure units of the resources are given statically and with the discrete data. Thus, every slight change in the expense list item reference causes a change in norm and our norm is not flexible and features a discrepancy with the real life situations. In order to achieve a higher level of preciseness and to speed up the technological processes of planning and norming the engines of a company that lead to the regulation of the system, the discrete elements of the working （time-related） norms should be replaced by the dynamic ones. This is made possible through setting up norms models that in turn can be presented by formulae in the vectoral system. The use and implementation of the new technologies in terms of production, computer science and cybernetics provides for upgrading the norm requirements. New working tasks in turn require a new norm standardization, which can be applied to the hydrodemolition of concrete constructions by means of water robots that use high pressure water jets.展开更多
尽管人类生存的地球麻烦不断,但是人类探索外层空间的努力始终没有松懈。前不久,又一颗“流浪者”挣脱地球之引力飞往火星。就凭这一句(Afternine balloons have deployed,completely enveloping the landing craft,it will bouncealong...尽管人类生存的地球麻烦不断,但是人类探索外层空间的努力始终没有松懈。前不久,又一颗“流浪者”挣脱地球之引力飞往火星。就凭这一句(Afternine balloons have deployed,completely enveloping the landing craft,it will bouncealong like a toy on the Martian surface as much as a mile before coming to rest.)便足以让我们展开想象之翅膀!展开更多
基金supported in part by the National Natural Science Foundation of China(No.11972170).
文摘Biological water striders have advantages such as flexible movement,low disturbance to the water surface,and low noise.Researchers have developed a large number of biomimetic water strider robots based on their movement mechanism,which have broad application prospects in water quality testing,water surface reconnaissance,and search.This article mainly reviews the research progress of biomimetic water strider robots.First,the biological and kinematic characteristics of water striders are outlined,and some mechanical parameters of biological water striders are summarized.The basic equations of water strider movement are then described.Next,an overview is given of the past and current work on skating and jumping movements of biomimetic water strider robots based on surface tension and water pressure dominance.Based on the current research status of biomimetic water strider robots,the shortcomings of current research on biomimetic water striders are summarized,and the future development of biomimetic water strider robots is discussed.This article provides new insights for the design of biomimetic water strider robots.
文摘Normization, i.e., the system of norms is a structure that defines the group of elements containing the norm values for the requirements of a certain resource. Resources comprise of materials, machines and labor. All the requirements of the measure units of the resources are given statically and with the discrete data. Thus, every slight change in the expense list item reference causes a change in norm and our norm is not flexible and features a discrepancy with the real life situations. In order to achieve a higher level of preciseness and to speed up the technological processes of planning and norming the engines of a company that lead to the regulation of the system, the discrete elements of the working （time-related） norms should be replaced by the dynamic ones. This is made possible through setting up norms models that in turn can be presented by formulae in the vectoral system. The use and implementation of the new technologies in terms of production, computer science and cybernetics provides for upgrading the norm requirements. New working tasks in turn require a new norm standardization, which can be applied to the hydrodemolition of concrete constructions by means of water robots that use high pressure water jets.
文摘尽管人类生存的地球麻烦不断,但是人类探索外层空间的努力始终没有松懈。前不久,又一颗“流浪者”挣脱地球之引力飞往火星。就凭这一句(Afternine balloons have deployed,completely enveloping the landing craft,it will bouncealong like a toy on the Martian surface as much as a mile before coming to rest.)便足以让我们展开想象之翅膀!
