Tasks of dba
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The document outlines 11 key tasks of a database administrator: 1) evaluate hardware, 2) install software, 3) plan the database design, 4) create and open the database, 5) back up the database, 6) enroll users, 7) implement the database design, 8) back up the fully functional database, 9) tune performance, 10) download and install patches, and 11) roll out the database to additional hosts. Each task is then described in more detail with relevant subtasks and considerations.
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key aspects of modern manufacturing and design, enhancing the technical proficiency and readiness for future engineering endeavors.
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15th International Conference on Computer Science, Engineering and Applicatio...
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DATA-DRIVEN SHOULDER INVERSE KINEMATICS YoungBeom Kim1 , Byung-Ha Park1 , Kwa...
DATA-DRIVEN SHOULDER INVERSE KINEMATICS YoungBeom Kim1 , Byung-Ha Park1 , Kwa...charlesdick1345 This paper proposes a shoulder inverse kinematics (IK) technique. Shoulder complex is comprised of the sternum, clavicle, ribs, scapula, humerus, and four joints.
Process Parameter Optimization for Minimizing Springback in Cold Drawing Proc...
Process Parameter Optimization for Minimizing Springback in Cold Drawing Proc...Journal of Soft Computing in Civil Engineering In tube drawing process, a tube is pulled out through a die and a plug to reduce its diameter and thickness as per the requirement. Dimensional accuracy of cold drawn tubes plays a vital role in the further quality of end products and controlling rejection in manufacturing processes of these end products. Springback phenomenon is the elastic strain recovery after removal of forming loads, causes geometrical inaccuracies in drawn tubes. Further, this leads to difficulty in achieving close dimensional tolerances. In the present work springback of EN 8 D tube material is studied for various cold drawing parameters. The process parameters in this work include die semi-angle, land width and drawing speed. The experimentation is done using Taguchi’s L36 orthogonal array, and then optimization is done in data analysis software Minitab 17. The results of ANOVA shows that 15 degrees die semi-angle,5 mm land width and 6 m/min drawing speed yields least springback. Furthermore, optimization algorithms named Particle Swarm Optimization (PSO), Simulated Annealing (SA) and Genetic Algorithm (GA) are applied which shows that 15 degrees die semi-angle, 10 mm land width and 8 m/min drawing speed results in minimal springback with almost 10.5 % improvement. Finally, the results of experimentation are validated with Finite Element Analysis technique using ANSYS.
"Feed Water Heaters in Thermal Power Plants: Types, Working, and Efficiency G...
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🔧 Function of a Feed Water Heater:
It uses steam extracted from the turbine to preheat the feed water.
This reduces the fuel required to convert water into steam in the boiler.
It supports Regenerative Rankine Cycle, increasing plant efficiency.
🔍 Types of Feed Water Heaters:
Open Feed Water Heater (Direct Contact)
Steam and water come into direct contact.
Mixing occurs, and heat is transferred directly.
Common in low-pressure stages.
Closed Feed Water Heater (Surface Type)
Steam and water are separated by tubes.
Heat is transferred through tube walls.
Common in high-pressure systems.
⚙️ Advantages:
Improves thermal efficiency.
Reduces fuel consumption.
Lowers thermal stress on boiler components.
Minimizes corrosion by removing dissolved gases.
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拡散×自己回帰を融合したTransformerをベースに、π0.5ではオープンワールドでの推論・計画も可能に。
This presentation introduces robot foundation models that integrate vision, language, and action.
Built on a Transformer combining diffusion and autoregression, π0.5 enables reasoning and planning in open-world settings.
"Boiler Feed Pump (BFP): Working, Applications, Advantages, and Limitations E...
"Boiler Feed Pump (BFP): Working, Applications, Advantages, and Limitations E...Infopitaara A Boiler Feed Pump (BFP) is a critical component in thermal power plants. It supplies high-pressure water (feedwater) to the boiler, ensuring continuous steam generation.
⚙️ How a Boiler Feed Pump Works
Water Collection:
Feedwater is collected from the deaerator or feedwater tank.
Pressurization:
The pump increases water pressure using multiple impellers/stages in centrifugal types.
Discharge to Boiler:
Pressurized water is then supplied to the boiler drum or economizer section, depending on design.
🌀 Types of Boiler Feed Pumps
Centrifugal Pumps (most common):
Multistage for higher pressure.
Used in large thermal power stations.
Positive Displacement Pumps (less common):
For smaller or specific applications.
Precise flow control but less efficient for large volumes.
🛠️ Key Operations and Controls
Recirculation Line: Protects the pump from overheating at low flow.
Throttle Valve: Regulates flow based on boiler demand.
Control System: Often automated via DCS/PLC for variable load conditions.
Sealing & Cooling Systems: Prevent leakage and maintain pump health.
⚠️ Common BFP Issues
Cavitation due to low NPSH (Net Positive Suction Head).
Seal or bearing failure.
Overheating from improper flow or recirculation.
Process Parameter Optimization for Minimizing Springback in Cold Drawing Proc...
Process Parameter Optimization for Minimizing Springback in Cold Drawing Proc...Journal of Soft Computing in Civil Engineering
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Tasks of dba
- 1. Presentation On: Tasks Of Database Administrator Presented To: Sir Israr Hussain Presented By: Attia Qamar
- 2. Database Administrator TasksDatabase Administrator Tasks These are the following tasks of Database Administrator: Task 1:Evaluate the Database Server Hardware Task 2:Install the Oracle Database Software Task 3:Plan the Database Task 4:Create and Open the Database Task 5:Back Up the Database Task 6:Enroll System Users Task 7:Implement the Database Design Task 8:Back Up the Fully Functional Database Task 9:Tune Database Performance Task 10:Download and Install Patches Task 11:Roll Out to Additional Hosts
- 3. Task 1: Evaluate the Database Server Hardware This evaluation should reveal the following information: Best use the available computer resources How many disk drives are available to the Oracle products How many, if any, dedicated tape drives are available to Oracle products How much memory is available to the instances of Oracle Database
- 4. Task 2: Install the Oracle Database Software As the database administrator: Install the Oracle Database server software Any front-end tools Database applications Install the Oracle Net components
- 5. Task 3: Plan the Database As the database administrator, you must plan: The logical storage structure of the database The overall database design A backup strategy for the database
- 6. Task 4: Create and Open the Database
- 7. Task 5: Back Up the Database After you create the database structure: Carry out the backup strategy Create any additional redo log files, Take full database backup (online or offline), Schedule future database backups at regular intervals
- 8. Task 6: Enroll System Users
- 9. Task 7: Implement the Database Design Implement the planned logical structure database by creating: All necessary tablespaces When you have finished creating tablespaces, you can create the database objects.
- 10. Task 8: Back Up the Fully Functional Database Regularly scheduled backups
- 11. Task 9: Tune Database Performance Optimizing the performance of the database Control the allocation of resources among various user groups.
- 12. Task 10: Download and Install Patches After installation DB, download and install patches A patch is a piece of software designed to update a computer program single interim patches patch sets (or patch releases)
- 13. Task 11: Roll Out to Additional Hosts Clone your tested Oracle Database: Cloning an Oracle home Manually clone an Oracle home You have multiple production database systems. You want to create development and test systems that are identical to your production system.