Casing-While-Drilling 24-in. Surface Section Enables Operator to Add One Extra Slot to the Existing Drilling Template and Cut Operation Costs in Offshore Congo

2009 ◽  
Author(s):  
Enis Aliko ◽  
Stefano De Luca
Keyword(s):  
Operation Costs ◽  
Surface Section

scholarly journals Analysis of Operational Efficiencies and Costs for Extracting Thinned Woods in Small-Scale Forestry, Nasunogahara Area, Tochigi Prefecture, Japan

2020 ◽  
Vol 3 (1) ◽  
pp. 61
Author(s):  
Kazuhiro Aruga
Keyword(s):  
Transportation Costs ◽  
The Other ◽  
Small Scale ◽  
Light Truck ◽  
Operation Costs ◽  
Other Hand ◽  
Light Trucks ◽  
The Cost ◽  
Manual Extraction ◽  
Truck Transportation

In this study, two operational methodologies to extract thinned woods were investigated in the Nasunogahara area, Tochigi Prefecture, Japan. Methodology one included manual extraction and light truck transportation. Methodology two included mini-forwarder forwarding and four-ton truck transportation. Furthermore, a newly introduced chipper was investigated. As a result, costs of manual extractions within 10 m and 20 m were JPY942/m3 and JPY1040/m3, respectively. On the other hand, the forwarding cost of the mini-forwarder was JPY499/m3, which was significantly lower than the cost of manual extractions. Transportation costs with light trucks and four-ton trucks were JPY7224/m3 and JPY1298/m3, respectively, with 28 km transportation distances. Chipping operation costs were JPY1036/m3 and JPY1160/m3 with three and two persons, respectively. Finally, the total costs of methodologies one and two from extraction within 20 m to chipping were estimated as JPY9300/m3 and JPY2833/m3, respectively, with 28 km transportation distances and three-person chipping operations (EUR1 = JPY126, as of 12 August 2020).

scholarly journals Optimal Planning of Electricity-Natural Gas Coupling System Considering Power to Gas Facilities

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3400
Author(s):  
Jie Xing ◽  
Peng Wu
Keyword(s):  
Natural Gas ◽  
Energy Systems ◽  
Optimal Planning ◽  
Planning Model ◽  
Operation Costs ◽  
Coupling System ◽  
Gas System ◽  
Different Types ◽  
Power To Gas ◽  
Natural Gas System

Bidirectional coupling systems for electricity and natural gas composed of gas units and power-to-gas (P2G) facilities improve the interactions between different energy systems. In this paper, a combined optimization planning method for an electricity-natural gas coupling system with P2G was studied. Firstly, the characteristics of the component model of the electricity-natural gas coupling system were analyzed. The optimization planning model for the electricity-natural gas coupling system was established with the goal of minimizing the sum of the annual investment costs and the annual operation costs. Based on the established model, the construction statuses for different types of units, power lines, and pipelines and the output distribution values for gas units and P2G stations were optimized. Then, the immune algorithm was proposed to solve the optimization planning model. Finally, an electricity-natural gas coupling system composed of a seven-node natural gas system and a nine-node power system was taken as an example to verify the rationality and effectiveness of the model under different scenarios.

Evaluation of bus transit maintenance and operation costs in Kuwait

1999 ◽  
Vol 19 (4) ◽  
pp. 305-314 ◽  
Author(s):  
Parviz A. Koushki ◽  
Saleh Yaseen ◽  
Laila I. Ali
Keyword(s):  
Bus Transit ◽  
Operation Costs

Anatomical movement replicator applied to activities in ionizing radiation fields

2021 ◽  
Vol 8 (3A) ◽  
Author(s):  
Amir Zacarias Mesquita
Keyword(s):  
Ionizing Radiation ◽  
Radiological Protection ◽  
Control Center ◽  
Control Programs ◽  
Remote Manipulation ◽  
Radiation Fields ◽  
Working Environments ◽  
Operation Costs ◽  
Human Arm ◽  
And Robotics

The aim of this work is to demonstrate the need to develop more efficient means for radiological protection, making use of the latest automation and robotics technologies. A manipulator model has been developed that has technological differentials that can positively influence the performance and cost of remote manipulation. The built-in equipment has a Slave manipulator, developed without using semiconductor elements. They are housed in the control center, which is attached to the manipulator via umbilical cord, facilitating the equipment adaptation in hot cells and other working environments. The arrangement of the joints and the links, have similarities with the anatomy of the human arm, improving the instinctively of the operation. To demonstrate its technological feasibility, a prototype Master-Slave manipulator was designed, and built using three control programs, which were written exclusively for this work. It was also designed to reduce construction and operation costs, making it accessible to most areas. The results obtained with the prototype construction are shown to be promising, providing an incentive to continue the development of manipulators using similar technologies. The equipment, obtained satisfactory results in relation to the operability, being able to perform movement tasks of loads, as foreseen in the project.

scholarly journals BIBLIOS Revisited

1972 ◽  
Vol 5 (2) ◽  
pp. 63
Author(s):  
John C. Kountz
Keyword(s):  
Orange County ◽  
Cost Comparison ◽  
Operation Costs ◽  
Control Modules

<p class="p1">In the following, Orange County Public Library's <span class="s1">earlier </span>reports on its BIBLIOS system are updated. Book <span class="s1">catalog </span>and <span class="s1">circulation </span>control modules are detailed, development and operation costs documented, and a cost comparison for acquisitions cited.</p>

scholarly journals Unconditional Accounting Conservatism and Real Earnings Management

2018 ◽  
Vol 9 (2) ◽  
pp. 203 ◽  
Author(s):  
Han Li
Keyword(s):  
Earnings Management ◽  
Internal Control ◽  
Negative Relationship ◽  
Robustness Analysis ◽  
Accounting Conservatism ◽  
Real Earnings Management ◽  
Audit Risk ◽  
Operation Costs ◽  
Abnormal Operation ◽  
The Relationship

This research examines the relationship between unconditional accounting conservatism and real earnings management in China’s corporations. Using the regression models, the real earnings management proxies are found by the abnormal cash flow of operations, the abnormal operation costs and the abnormal discretionary expenses and the aggregated measures. The research sheds light on the negative relationship between unconditional accounting conservatism and real earnings management after controlling internal control quality and audit risk. The results of these inferences remain the same after dealing with the robustness analysis and the endogeneity concerns.

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