Dynamics of a System of Bodies with Program-Variable Configuration

2004 ◽  
Vol 40 (3) ◽  
pp. 345-350 ◽  
Author(s):  
A. E. Zakrzhevskii ◽  
J. Matarazzo ◽  
V. S. Khoroshilov
1995 ◽  
Vol 117 (B) ◽  
pp. 107-112 ◽  
Author(s):  
K. J. Waldron

Research on walking vehicles and variable configuration wheeled vehicles is reviewed. The central feature of the vehicles discussed is terrain adaptive capability. The principal elements of the technical problems of coordination and control are discussed for each vehicle type. Examples of each vehicle type are discussed and an extensive reference list is provided. Although the article is primarily a review article, it contains a new discussion of the coordination problem of robotic mechanisms.


2020 ◽  
Vol 5 (4) ◽  
pp. 400
Author(s):  
Venti Verlia ◽  
Sahlan Sahlan

Abstract : This study aims to determine the effect of the School Literacy Movement program on the Indonesian language learning achievement of grade IX students at SMP Negeri 10 Kendari. In this study using ex post facto method and sampling technique, namely stratified sampling. The instrument used was in the form of a questionnaire. Based on the results of the research data analysis, it is known that there is a significant positive effect between the School Literacy Movement program on the Indonesian language learning achievement of grade IX students of SMP Negeri 10 Kendari. Hypothesis test results show that the significance value (Sig.) Is 0.039. When compared with the probability value or α = 0.05, then 0.039 <0.05, which means that H₀ is rejected and Hₐ is accepted. If seen from the tcount value, it is obtained a value of 2.110> t table 1.994, so it can be concluded that the School Literacy Movement program variable (X) affects the Indonesian learning achievement variable (Y). This can also be seen from the results of the determination coefficient test which reveals the contribution of the School Literacy Movement program to Indonesian language learning achievement is 6.1%. Although the contribution made is still very low, if the program is implemented very well by looking at the factors that influence its implementation, the impact on Indonesian learning achievement can be increased. The factors that influence the implementation of the School Literacy Movement program consist of two factors, namely inhibiting factors consisting of the family environment and the lack of literacy officers, and supporting factors, namely the support from the school and the provision of adequate books. Factors that affect students' Indonesian learning achievement consist of internal and external factors. Internal factors that affect student achievement are psychological aspects consisting of reading interest and student willingness, while external factors that influence are the school environment and the existence of social media. Keywords: literacy movement; Learning achievement


Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4428
Author(s):  
Pietro Antonio Paolo Calò ◽  
Savino Petrignani ◽  
Michele Di Gioia ◽  
Cristoforo Marzocca

Full exploitation of the intrinsic fast timing capabilities of analog silicon photomultipliers (SiPMs) requires suitable front-end electronics. Even a parasitic inductance of a few nH, associated to the interconnections between the SiPM and the preamplifier, can significantly degrade the steepness of the detector response, thus compromising the timing accuracy. In this work, we propose a simple analytic expression for the single-photon response of a SiPM coupled to the front-end electronics, as a function of the main parameters of the detector and the preamplifier, taking into account the parasitic inductance. The model is useful to evaluate the influence of each parameter of the system on the slope of its response and to guide the designer in the definition of the architecture and the specifications for the front-end electronics. The results provided by the model have been successfully compared with experimental measurements from a front-end circuit with variable configuration based on a bipolar junction transistor (BJT), coupled to a 3 × 3 mm2 SiPM stimulated by a fast-pulsed laser source.


1972 ◽  
Vol 94 (1) ◽  
pp. 21-29
Author(s):  
M. R. Ozgu ◽  
A. H. Stenning

The transient switching of a model bistable fluidic amplifier with low setbacks and variable configuration has been studied. The amplifier was of conventional design with straight and convex side-walls, cusped and pointed splitters, and variable control port width. Water was used as the fluid and the element was operated at different Reynolds numbers. Effect of loading, inertia of the fluid in the output legs, bias flows from the inactive control port, and geometric changes on the transient switching times were determined. The flow field was made visible by generating hydrogen bubbles in the power nozzle and at the power nozzle exit. Using visual studies of the switching process as a guide, an analysis has been developed to predict the switching times approximately.


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