scholarly journals Influence of stand and terrain characteristics on the productivity of the Timberjack 240b tractor in pure beech stands

Topola ◽  
2021 ◽  
pp. 5-13
Author(s):  
Boban Miletić ◽  
Milorad Danilović ◽  
Todor Đorem ◽  
Branislav Filipić ◽  
Marko Gutalj
Keyword(s):  
Delay Time ◽  
Working Hours ◽  
Gis Technology ◽  
Time Coefficient ◽  
Beech Stand ◽  
Transport Cycle ◽  
Longitudinal Slope ◽  
Load Volume ◽  
Tractor Driver ◽  
Terrain Characteristics

This paper presents the results of research of the Timberjack 240b tractor equipped with a double-drum winch (work form 1 Tractor driver + 0 Assistant) in beech stand at an average elevation of 983.73 m. The research was conducted using the time and work study method, with the help of GIS technology in certain segments of research. The achieved working hours consist of 75.44% effective time and 24.56% delay time. The delay time coefficient is 1.33. In total, 47 transport cycles were realized, with 66 stopping points, an average of 1.41 per transport cycle. The average skidding distance was 221.19 m. In total, 363 logs (204.04 m3) were collected by 79 winches. The average load volume was 4.34 m3 and consisted of 5.43 pieces. Loaded tractor skidding time is strongly influenced by skidding distance and load volume in interaction with the longitudinal slope of skidding trails. To increase tractor productivity, it was concluded that the skidding roads should be built with the smallest longitudinal slope possible. Preferably, logs should be skidded downhill.

scholarly journals Development of agriculture based on geographic information technologies

2021 ◽  
Vol 282 ◽  
pp. 07019
Author(s):  
Daniya Mustashkina ◽  
Marat Khannanov ◽  
Marat Kalimullin ◽  
Natalia Karpova
Keyword(s):  
Financial Management ◽  
Agricultural Production ◽  
Information Technologies ◽  
Digital Technologies ◽  
Working Hours ◽  
Geographic Information ◽  
Economic Sector ◽  
Gis Technology ◽  
Management Efficiency ◽  
Geographic Information Technologies

The article discusses the need to use digital technologies that can be used in agriculture not only for financial management and tracking of economic operations, but farmers began to use them to monitor sowings, in agricultural production. One of the most promising directions of improving the management efficiency of agricultural production is associated with the use of geographic information technologies based on information systems, especially in risky agriculture. A large number of vehicles, a large number of personnel employed in agriculture determine the need to develop new management methods in agricultural production. GIS technology allows economic sector employees to conduct a comparative analysis of planned and actual data automatically calculated by the formation of working hours, reports and certificates.

Compensatory Coping Through the Extension of Working Hours

2019 ◽  
Vol 63 (3) ◽  
pp. 115-128 ◽  
Author(s):  
Maie Stein ◽  
Sylvie Vincent-Höper ◽  
Nicole Deci ◽  
Sabine Gregersen ◽  
Albert Nienhaus
Keyword(s):  
Job Demands ◽  
Working Hours ◽  
Well Being ◽  
Leader Member Exchange ◽  
Workplace Health ◽  
High Quality ◽  
Data Analyses ◽  
Member Exchange ◽  
The Relationship ◽  
Advance Knowledge

Abstract. To advance knowledge of the mechanisms underlying the relationship between leadership and employees’ well-being, this study examines leaders’ effects on their employees’ compensatory coping efforts. Using an extension of the job demands–resources model, we propose that high-quality leader–member exchange (LMX) allows employees to cope with high job demands without increasing their effort expenditure through the extension of working hours. Data analyses ( N = 356) revealed that LMX buffers the effect of quantitative demands on the extension of working hours such that the indirect effect of quantitative demands on emotional exhaustion is only significant at low and average levels of LMX. This study indicates that integrating leadership with employees’ coping efforts into a unifying model contributes to understanding how leadership is related to employees’ well-being. The notion that leaders can affect their employees’ use of compensatory coping efforts that detract from well-being offers promising approaches to the promotion of workplace health.

Flexible working hours and individual diurnal rhythms

1973 ◽  
Author(s):  
Paula Patkai ◽  
Kerstin Pettersson ◽  
Torbjorn Akerstedt
Keyword(s):  
Working Hours ◽  
Diurnal Rhythms ◽  
Flexible Working Hours ◽  
Flexible Working

Research on Prediction of High-Speed Rail Trains Delay Time

CICTP 2020 ◽  
2020 ◽  
Author(s):  
Jing Shi ◽  
Qiyuan Peng ◽  
Ling Liu
Keyword(s):  
Delay Time ◽  
High Speed ◽  
High Speed Rail

Synchronization of Chaotic Quantum Dot Light Emitting Diodes under Optical Feedback Effect

2020 ◽  
pp. 144-148
Keyword(s):  
Quantum Dot ◽  
Delay Time ◽  
Chaos Synchronization ◽  
Optical Feedback ◽  
Light Emitting Diode ◽  
Feedback Effect ◽  
Complete Synchronization ◽  
Light Emitting ◽  
Coupling Methods ◽  
Coupling Parameters

Chaos synchronization of delayed quantum dot light emitting diode has been studied theortetically which are coupled via the unidirectional and bidirectional. at synchronization of chaotic, The dynamics is identical with delayed optical feedback for those coupling methods. Depending on the coupling parameters and delay time the system exhibits complete synchronization, . Under proper conditions, the receiver quantum dot light emitting diode can be satisfactorily synchronized with the transmitter quantum dot light emitting diode due to the optical feedback effect.

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