Reduction of Sticking in a Linear-Guideway Type Recirculating Ball Bearing

2018 ◽  
Vol 141 (2) ◽  
Author(s):  
Hiroyuki Ohta ◽  
Guillermo Andres Guajardo Dueñas ◽  
Yusuke Ueki
Keyword(s):  
Driving Force ◽  
Ball Bearing ◽  
Body Type ◽  
Stroke Length ◽  
Rolling Moment ◽  
Length Increase ◽  
Different Dimensions ◽  
Moment Load ◽  
Relationship Of ◽  
The Relationship

This paper deals with the reduction of sticking in a linear-guideway type recirculating ball bearing (linear bearing), which is the significant increase in the required driving force for a linear bearing in a back-and-forth short stroke operation. First, the driving force of a linear bearing with five carriage-body types (A–E, having different dimensions and shapes) under rolling moment load was measured. Simultaneously, the ball's position in the load zone was observed. The experimental results showed that regardless of the carriage-body types, the increasing rate of the driving force and the interspace (space between balls around the center of the load zone on the raised side) decreases and sticking tends to hardly occur as the maximum linear velocity and the stroke length increase. Also, the occurrence of sticking was affected by the carriage-body types. Finally, to examine the relationship of carriage-body types, carriage-body deformation, and the occurrence of sticking, the carriage-body deformation (caused by preloading and tightening torque of bolts) was calculated by finite element method (FEM). The FEM results showed that carriage-body type, which is more deformable, had a tendency to reduce sticking.

Sticking of a Linear-Guideway Type Recirculating Ball Bearing

2017 ◽  
Vol 139 (3) ◽  
Author(s):  
Hiroyuki Ohta ◽  
Genta Hanaoka ◽  
Yusuke Ueki
Keyword(s):  
Driving Force ◽  
Ball Bearing ◽  
Sliding Friction ◽  
Stroke Length ◽  
Rolling Moment ◽  
Moving Body ◽  
Moment Load ◽  
Rolling Balls

In this paper, the driving force of a linear-guideway type recirculating ball bearing (linear bearing) is measured and explained as the first step toward an understanding of sticking, which is the significant increase in driving force required to move a linear bearing under back-and-forth operation with a short stroke length. First, the driving force required for operation of a test bearing (which is a linear-guideway type recirculating ball bearing with load balls) and acceleration of a moving body (which consists of a carriage of the test bearing, an arm, and weight) were measured. The measurements showed that the sticking occurred when the test bearing, under a relatively higher rolling moment load, was driven in an offset position for a certain period. Next, the driving force of a test bearing with alternating load balls and spacer balls was measured, and it was clear that the cause of the sticking was the sliding friction between rolling balls. Finally, the ball locations in the load zone of the test bearing with load balls were observed in operation, and the occurrence process of the sticking is explained.

scholarly journals Sol T. Plaatje's paremiological quest: a common humanity in cultural diversity

2018 ◽  
Vol 55 (1) ◽  
pp. 149-165
Author(s):  
Khekheti Makhudu
Keyword(s):  
South Africa ◽  
Cultural Diversity ◽  
Driving Force ◽  
Common Humanity ◽  
Literary Expression ◽  
Political Beliefs ◽  
The North ◽  
The Social ◽  
Relationship Of ◽  
The Relationship

Having written and compiled from memory, over 700 Setswana proverbs when he was briefly resident in London, around the 1900s, Sol T. Plaatje exhibited unusual ethnographic knowledge and remarkable, creative translation skills in diaspora-like circumstances.  While most literary researchers attest to those achievements, few have been the theories that account sufficiently for Plaatje's multilingual proverb renditions. The view propounded here is that Plaatje's paremiological enterprise was probably never only an exercise of his polyglot abilities. Rather his quest appears to have been to assert the cultural similarities and convergences between African and European people's histories.  His socio-political beliefs propelled deep pride over his Setswana identity and became the driving force for highlighting the human bonds among nations of the North and the South. For Plaatje, seeing the overlaps and equivalences in and through the proverbs of the Dutch, English, French, Germans and the Batswana peoples, firstly validated orality as the bedrock of modern literary expression.  Secondly, the relationship of the two seemed to recapitulate the communicative connections among people and their languages, across time and space. Lastly, the paper makes the point that Plaatje's search for unity in the cultural diversity as exhibited in his 1916 Diane tsa Setswana collection and the 1924 A Sechuana Reader stories, provides instructive lessons that present-day South Africa would ill afford to ignore considering the social cohesion challenges the nation faces.

Information Matters: Government's Strategy to Build Capability in Managing Its Knowledge and Information Assets

2010 ◽  
Vol 10 (1) ◽  
pp. 47-50 ◽  
Author(s):  
Katie Woolf
Keyword(s):  
Driving Force ◽  
Information Assurance ◽  
Information Network ◽  
Data Loss ◽  
Delivery Model ◽  
Senior Leader ◽  
Information Assets ◽  
The Government ◽  
Relationship Of ◽  
The Relationship

AbstractThis article by Katie Woolf, formerly of the Government Knowledge and Information Network, looks at the new UK Government strategy for knowledge and information (KIM). Led by the Knowledge Council, the strategy sets out the principles and actions government must take to develop the capability it needs to manage corporate knowledge and information as the key business assets they are. It discusses how the strategy will be achieved through a departmental delivery model, the relationship of the strategy with the Information Assurance agenda post data loss scandals, and the need for senior leader engagement to be the driving force to building a culture that values KIM.

Research of Electric Vehicles' Discharging Price

2014 ◽  
Vol 543-547 ◽  
pp. 452-456 ◽  
Author(s):  
Ya Qi Ni ◽  
Jia Shi Yang ◽  
Dian Gang Wang ◽  
Cheng Wei Li ◽  
Jun Yong Liu ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Bilevel Programming ◽  
Driving Force ◽  
Peak Load ◽  
Minimum Cost ◽  
Bilevel Programming Problem ◽  
Load Shifting ◽  
Control Scheme ◽  
Relationship Of ◽  
The Relationship

Through the vehicle to the network (V2G) control, the objective of the "load shifting" is possible. Reasonable charging and discharging price is the fundamental driving force for EV users to participate in V2G and the analysis of the game process of the grid company and the EV users becomes critical. A bilevel programming problem is established which makes company the largest gains and consumers the minimum cost. Through a control scheme whose purpose is minimizing the sample variance of load, the relationship of annual discharging electricity energy and peak load decrement is obtained. At last the optimal discharging price of power grid company and the corresponding proportion of EV participating in V2G is calculated by chaos algorithm. It provides a reference for company to formulate discharging price.

The experimentation of the affects from the storytelling meetings for institutionalized children: report

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Romércia Batista dos Santos ◽  
Dinamara Garcia Feldens
Keyword(s):  
Qualitative Research ◽  
Children And Adolescents ◽  
Participant Observation ◽  
Active Participant ◽  
Institutionalized Children ◽  
Different Dimensions ◽  
Relationship Of ◽  
The Relationship

This study aims to understand the experimentation of affects provided by storytelling meetings for institutionalized children at the Center for Attention to Children and Adolescents-CCA of Cajazeiras - PB. It is in this perspective that we seek, as a researcher, to understand how they experience their childhoods. “Storytelling is an art because it brings meanings when proposing a dialogue between the different dimensions of being” (Busatto, 2003, p. 10). To guide this study, the following question was asked: What affections were experienced by institutionalized children with storytelling? Eminently spinosan concept, affections are the expression of the relationship of each man with others and with the environment. Affection is, therefore, an important mediation capable of revealing much about the constitution of the human. Thus, the study adopts qualitative research - descriptive analytics, with active participant observation by the researcher with the researched subjects.

A Semiotic Approach to Dimensions of Meaning in Translation

2016 ◽  
Vol 6 (3) ◽  
pp. 596
Author(s):  
Xian Xiao
Keyword(s):  
Two Dimensions ◽  
Meaning Potential ◽  
Metaphorical Meaning ◽  
Translation Practice ◽  
Semiotic Approach ◽  
Special Occasion ◽  
Different Dimensions ◽  
Relationship Of ◽  
The Relationship

This paper attempts to follow the thoughts of Saussure and Peirce, and take their thoughts as beacons to analyze the different dimensions of meaning. Signs exist for representing the objects either in reality or in imagery, and during the signifying process, two dimensions of meaning come into being, signification and significance. Signification internalized in the structure could be understood from the perspective of structuralism. In Contrast, significance is the effect of what is referred to in a synchronical dimension as meaning potential related to the outside systems, which may be further classified into three aspects: metaphorical meaning, implicature and associative meaning. Moreover, the relationship of signification and significance is dynamic, not static characterized by hierarchy, convertibility and coexistence. Moreover, this paper also discusses how to achieve equivalence based on the dimensions of meaning in an optimal way in real translation practice, which includes signification equivalence, significance equivalence and signification\significance equivalence which is an intersection sandwiched between signification and significance. Signification equivalence and significance equivalence highlight the ability of indicating and creation of signs whereas signification\significance equivalence, accompanied by the developing signifying process focuses on the pragmatic fuzziness brought by the speakers or writers on special occasion on purpose

scholarly journals Can the physiological process of teething in babies be abnormal?

2016 ◽  
Vol 1 (1) ◽  
pp. 30-35 ◽  
Author(s):  
I. N. Zakharova ◽  
I. N. Kholodova ◽  
Y. A. Dmitrieva ◽  
N. V. Morozova ◽  
M. V. Mozzhukhina ◽  
...  
Keyword(s):  
Clinical Symptoms ◽  
Physiological Process ◽  
Current Therapy ◽  
Body Type ◽  
Research Findings ◽  
Relationship Of ◽  
The Relationship

The article discusses the problem of teething in babies, the related mechanisms and factors. The research findings demonstrate the importance of different clinical symptoms of teething in infants, the relationship of the process with the baby's body type. Questions of the current therapy of pathological teething are considered.

scholarly journals Research of the Relationship of the Integral Characteristics of the Representation

2015 ◽  
Vol 7 (3) ◽  
pp. 40-50 ◽  
Author(s):  
V.P. Peskov
Keyword(s):  
Correlation Analysis ◽  
School Education ◽  
Coordinate Systems ◽  
Mental Phenomenon ◽  
Common System ◽  
Integral Characteristics ◽  
Sufficient Set ◽  
Different Dimensions ◽  
Relationship Of ◽  
The Relationship

The article raises the problem of representation, indicates that the multidimensionality, diversity of representation as a mental phenomenon requires consideration in different coordinate systems. It is shown that system consideration of the representation involves not only its study as a semifunctional education, a complex whole (structure), but also includes the study of its integral characteristics, because it is needed a minimally sufficient set of integral characteristics of representation that provides economy in its description. Also it is concluded that there is a need taking into account different measurements, various qualities and characteristics of representation; highlighting the determinant system, reflecting its diversity, multidimensionality; and correlating different dimensions (characteristics) to each other, as well as their complementarity. Indicated that the study of multidimensionality of representation involves the analysis of the relationship of its various integral characteristics (controllability, liveliness, brightness-clearness), that would clarify the nature of the desired integral factors and create a common system of methods for studying the representation. The author shows the results of correlation analysis of the integral characteristics of representation at different age/stages of school education.

KEY DIMENSIONS OF DIGITAL MATURITY: A STUDY WITH RETAIL SECTOR COMPANIES IN BRAZIL

2021 ◽  
Vol 22 (6) ◽  
Author(s):  
PAULA K. SALUME ◽  
MARCELO W. BARBOSA ◽  
MARCELO R. PINTO ◽  
PAULO R. SOUSA
Keyword(s):  
Scientific Literature ◽  
Empirical Studies ◽  
Transformation Process ◽  
Digital Transformation ◽  
Retail Sector ◽  
Academic Context ◽  
Different Dimensions ◽  
Key Dimensions ◽  
Relationship Of ◽  
The Relationship

ABSTRACT Purpose: The objective of this research was to identify which dimensions are related to the establishment of higher levels of digital maturity. Originality/value: There is little academic scientific literature on digital maturity in Brazil. This research will offer subsidies to companies regarding the different dimensions that need to be emphasized by managers in order to achieve a full and effective digital transformation. This information will be valuable to support the digital transformation process of these companies. The study fills a gap in the academic context related to the lack of more comprehensive empirical studies based on digital maturity. Design/methodology/approach: This study evaluated the relationship of eight dimensions of capacity (strategy, leadership, market, operational, people, culture, governance, and technology) with the development of digital maturity. This survey applied an electronic questionnaire to directors of the strategic level of Brazilian retail sector companies located in different regions of Brazil. At the end, a total of 260 valid questionnaires were obtained. The responses were analyzed using the Partial Least Squares (PLS) method. Findings: The research results showed that the strategy, market, operations, culture, and technology dimensions are those that are most related to the development of digital maturity.

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