Papers by Keyword: Balance

Abstract: Harmonious cooperation of the skeletal, muscular and nervous systems, forming a human motion organ, is responsible for all undertaken movement activities. Motion organ in the illustrated embodiment responsible not only for two basic motion activities, locomotion and manipulation, but also for maintaining the posture of the human body. Standing posture control makes a particular dimension of physical activity, because correct, stable posture determines the ability to perform most human movements. In the case of a man to maintain a balance in a standing position seems to be something obvious and does not require much effort, but with the advent of lesions or aging we begin to see how complex it is the process of balance control. The changes lead to impaired balance control which in turn can lead to the appearance of postural instability and in extreme circumstances, even to collapse. Maintaining a stable posture it is primarily associated with motor control provided by the human nervous system. The nervous system acts as an posture control system and most of all giving to a body well-defined silhouette. This control relies heavily on the integration of information from the human receptor system. Muscle, joint, tendon and skin receptors communicate first to the brain information about the movement and position of individual body parts and then feedback these signals to the muscles, causing reflex reactions allowing for correction of posture and thus return the center of gravity to a position that maintaining equilibrium. Subdivide those human body into segments linked closely with the system osteoarthritis limbs and trunk can create a system of interconnected pendulums with many degrees of freedom. In the case of standing it will be largely complicated inverted pendulums system by which activities phenomena associated with maintaining balance and locomotion can be modeled. If additionally in an upright position, taking into account the natural motion restrictions movements in all joints except the ankles will be blocked, the body will be a close approximation behave like a rigid body. So we can assume that for supporting the human body at the ankle, it will behave like an inverted pendulum. The article presents the ways of describing the equilibrium of man as an inverted pendulum.

Abstract: Based on ABAQUS finite element analysis software simulation, the finite element model for dynamic analysis of rigid pile composite foundation and superstructure interaction system is established, which selects the two kinds of models, by simulating the soil dynamic constitutive model, selecting appropriate artificial boundary.The influence of rigid pile composite foundation on balance and imbalance of varying rigidity is analyzed under seismic loads. The result shows that the maximum bending moment and the horizontal displacement of the long pile is much greater than that of the short pile under seismic loads, the long pile of bending moment is larger in the position of stiffness change. By constrast, under the same economic condition, the aseismic performance of of rigid pile composite foundation on balance of varying rigidity is better than that of rigid pile composite foundation on imbalance of varying rigidity.

Abstract: According to the principles of air and heat balance and aiming at air-conditioning load time delay mechanism, the boot time for air-conditioning system operation is controlled to satisfy the demand of air-conditioned environment without wasting energy [1].

Abstract: Using the derivative of the Boolean function and the e-derivative defined by ourselves as research tools and deeply into the internal structure of Boolean, we study the issues of the analysis and judgment of balance for Boolean functions. We get that the linear functions and the nonzero derivative of the product of two linear functions are balanced functions, and the product of two linear functions are not balanced functions. We also obtain the quadratic homogeneous Booleans are not all balanced function. Besides, we deduce the theorem which determine the sum of linear function and balanced function whether it is a balanced function. What is more, the features of balance of Boolean functions can be reflected easily and effectively by e-derivative.

Abstract: In the research, a robot with gait and posture training functions is developed as an interactive balance rehabilitation training system for balance control impaired people to use. The system uses an action control tool with braking and monitoring functions to obtain the dynamic posture and gravity position of the body of the trainee, followed by subsequent process with software which is developed and designed completely to generate related feedback instructions for the trainee. Moreover, the instructions are presented in image, audio and tactile feedback manners, such that the trainee is provided with multiple message instructions to perform training activities according to the action request actually. Clinically, the research may provide training contents oriented according to task need. Compared to the decomposed action approach emphasized in conventional rehabilitation, it does allow the trainee to focus on the activity and obtains more significant effect. Furthermore, the goal of falling prevention function is also achievable after trained by the robot with gait and posture training functions developed in the research.

Abstract: A hash function h_MISR that suitable for passive devices is proposed. Taking parallel LFSR as the basic component h_MISR provides the security through one-wayness brought by the information loss in the process of compression. When implemented, the hardware complexity of h_MISR is much lower than Toeplitz hash.

Abstract: Three main steps to introduce the security work of helicopter load balance was illustrated in this paper, which contains how to choose the datum point, calculate the weight and moment and check whether the center of gravity (barycenter) is in the barycenter envelop. The correlative calculation and the analysis of barycenter envelop diagram to validate the feasibility of the method. According to the results of case study, an efficient referential method of the helicopter stowage was testified.

Abstract: The paper introduces the design scheme of the balanced preemptive selection system, and how to develop components implement the business logic, and deployment components for COM+. Developing high efficienctly, safe, easy maintenance of the selection course system With the Web server platform based on IIS.

Abstract: The properties of chaotic maps based on Logistic map, Tent map, Improved Logistic map and Chebyshev map are analyzed in this paper .Then we discuss the performance of correlation, balance and run-length of the chaotic binary sequences . Simulation results show that the characteristics of chaotic sequences are similar to the traditional pseudo-random sequences, and chaotic sequence is suitable for direct sequence spread spectrum systems as spreading sequence.

Abstract: This paper proposes a new two-component sensor balance to measure the thrust and torque of the propeller. Its principles of measuring force were derived and the procedures of balance measuring system were also provided according to the virtual instruments. The sensor balance was calibrated through the ground static calibration bench to verify its accuracy. And a ground static thrust experiment on a one-meter sized propeller model was carried out. By comparison, the experimental results of adopting the designed sensor balance basically tally with those of wind tunnel experiment, which proves that this sensor balance can be used in propeller experiments.