1466 Spa courses in London

10 weeks Spanish Course for Beginners face to face.

10 weeks Spanish Course for Beginners face to face.

10 weeks Spanish Course for Beginners face to face.

About this Training Course This 5 full-day course provides a comprehensive understanding of the various types of generators, exciters, automatic voltage regulators (AVRs), governing systems, and protective systems. The focus will be on maximizing the efficiency, reliability and longevity of these equipment by providing an understanding of the characteristics, selection criteria, common problems and repair techniques, preventive and predictive maintenance. The emphasis of this course is on protective systems, inspection methods, diagnostic testing, troubleshooting, modern maintenance techniques, refurbishment, rewind and upgrade options, as well as advanced methods for preventing partial discharge and other failures. Training Objectives Equipment Operation: Gain a thorough understanding of the operating characteristics of generators, exciters, AVR's and protective systems Equipment Diagnostics and Inspection: Learn in detail all the diagnostic techniques and inspections required of critical components of generators, exciters, AVR's and protective systems Equipment Testing: Understand thoroughly all the tests required for the various types of generators, exciters, AVR's and protective systems Electrical Generator Protective Systems: Gain a thorough understanding of all Electrical generator protective systems including: all electrical relays, tripping mechanisms, protective systems for negative phase sequence (unbalance loading), loss of excitation, over fluxing protection (over-voltage and underfrequency), reverse power (generator monitoring), over-speeding, pole slipping / out of step (sudden increase in torque or weakness in excitation), Class A protection, Class B protection Equipment Maintenance and Troubleshooting: Determine all the maintenance and troubleshooting activities required to minimize the downtime and operating cost of generators, exciters, AVR's and protective systems Equipment Repair and Refurbishment: Gain a detailed understanding of the various methods used to repair and refurbish generators, exciters, AVR's and protective systems Equipment Rewind and Upgrade Options: Discover all options available to rewind and upgrade the generator rotor and stator to enhance the output and reduce downtime Efficiency, Reliability, and Longevity: Learn the various methods used to maximize the efficiency, reliability, and longevity of generators, exciters, AVR's and protective systems Advanced Methods to Prevent Failure: Gain a thorough understanding of all the methods used to prevent partial discharge, and other failures in generators, exciters, AVR's and protective systems Equipment Sizing: Gain a detailed understanding of all the calculations and sizing techniques used for generators, exciters, AVR's and protective systems Design Features: Understand all the design features that improve the efficiency, reliability of generators, exciters, AVR's and protective systems Equipment Selection: Learn how to select generators, exciters, AVR's and protective systems by using the performance characteristics and selection criteria that you will learn in this course Equipment Enclosures and Sealing Methods: Learn about the various types of enclosures and sealing arrangements used for generators, exciters, AVR's and protective systems Equipment Commissioning: Understand all the commissioning requirements for generators, exciters, AVR's and protective systems Equipment Codes and Standards: Learn all the codes and standards applicable for generators, exciters, AVR's and protective systems Equipment Causes and Modes of Failures: Understand causes and modes of failures of generators, exciters, AVR's and protective systems System Design: Learn all the requirements for designing different types of generators, exciters, AVR's and protective systems Target Audience Engineers of all disciplines Managers Technicians Maintenance personnel Other technical individuals Course Level Basic or Foundation Training Methods Your specialist course leader relies on a highly interactive training method to enhance the learning process. This method ensures that all participants gain a complete understanding of all topics covered. The training environment is highly stimulating, challenging, and effective because the participants will learn by case studies which will allow them to apply the material taught to their own organization. Each delegate will receive a copy of the following materials written by the instructor: ELECTRICAL EQUIPMENT HANDBOOK' published by McGraw-Hill in 2003 (600 pages) Generator Inspection, Testing, Maintenance, Protective Systems and Refurbishment Manual (this manual covers all the inspection and maintenance activities as well as all protective systems required for generators - 400 pages) Trainer Your specialist course leader has more than 32 years of practical engineering experience with Ontario Power Generation (OPG), one of the largest electric utility in North America. He was previously involved in research on power generation equipment with Atomic Energy of Canada Limited at their Chalk River and Whiteshell Nuclear Research Laboratories. While working at OPG, he acted as a Training Manager, Engineering Supervisor, System Responsible Engineer and Design Engineer. During the period of time, he worked as a Field Engineer and Design Engineer, he was responsible for the operation, maintenance, diagnostics, and testing of gas turbines, steam turbines, generators, motors, transformers, inverters, valves, pumps, compressors, instrumentation and control systems. Further, his responsibilities included designing, engineering, diagnosing equipment problems and recommending solutions to repair deficiencies and improve system performance, supervising engineers, setting up preventive maintenance programs, writing Operating and Design Manuals, and commissioning new equipment. Later, he worked as the manager of a section dedicated to providing training for the staff at the power stations. The training provided by him covered in detail the various equipment and systems used in power stations. In addition, he has taught courses and seminars to more than four thousand working engineers and professionals around the world, specifically Europe and North America. He has been consistently ranked as 'Excellent' or 'Very Good' by the delegates who attended his seminars and lectures. He written 5 books for working engineers from which 3 have been published by McGraw-Hill, New York. Below is a list of the books authored by him; Power Generation Handbook: Gas Turbines, Steam Power Plants, Co-generation, and Combined Cycles, second edition, (800 pages), McGraw-Hill, New York, October 2011. Electrical Equipment Handbook (600 pages), McGraw-Hill, New York, March 2003. Power Plant Equipment Operation and Maintenance Guide (800 pages), McGraw-Hill, New York, January 2012. Industrial Instrumentation and Modern Control Systems (400 pages), Custom Publishing, University of Toronto, University of Toronto Custom Publishing (1999). Industrial Equipment (600 pages), Custom Publishing, University of Toronto, University of Toronto, University of Toronto Custom Publishing (1999). Furthermore, he has received the following awards: The first 'Excellence in Teaching' award offered by PowerEdge, Singapore, in December 2016 The first 'Excellence in Teaching' award offered by the Professional Development Center at University of Toronto (May, 1996). The 'Excellence in Teaching Award' in April 2007 offered by TUV Akademie (TUV Akademie is one of the largest Professional Development centre in world, it is based in Germany and the United Arab Emirates, and provides engineering training to engineers and managers across Europe and the Middle East). Awarded graduation 'With Distinction' from Dalhousie University when completed Bachelor of Engineering degree (1983). Lastly, he was awarded his Bachelor of Engineering Degree 'with distinction' from Dalhousie University, Halifax, Nova Scotia, Canada. He also received a Master of Applied Science in Engineering (M.A.Sc.) from the University of Ottawa, Canada. He is also a member of the Association of Professional Engineers in the province of Ontario, Canada. POST TRAINING COACHING SUPPORT (OPTIONAL) To further optimise your learning experience from our courses, we also offer individualized 'One to One' coaching support for 2 hours post training. We can help improve your competence in your chosen area of interest, based on your learning needs and available hours. This is a great opportunity to improve your capability and confidence in a particular area of expertise. It will be delivered over a secure video conference call by one of our senior trainers. They will work with you to create a tailor-made coaching program that will help you achieve your goals faster. Request for further information post training support and fees applicable Accreditions And Affliations

About this Training Course This 5 full-day course provides a comprehensive understanding of all the maintenance, inspection, diagnostics, testing, troubleshooting, refurbishment, and protective systems of all key electrical equipment including: transformers, inverters, rectifiers, switchgear and circuit breakers, relays and protective devices, cables and accessories, motors, variable frequency drives, uninterruptible power systems, generators, fuses, and industrial batteries. It will cover in detail all the inspection methods and tests required to identify faults and deficiencies in electrical equipment, as well as, the repair techniques and available refurbishment methods. The course will also cover the activities required to commission this equipment and it will also cover all protective systems associated with this equipment. The objective of the seminar is to maximize the efficiency, reliability, and longevity of this type of equipment by providing an understanding of the common problems and repair techniques, preventive and predictive maintenance. Training Objectives Electrical Equipment Testing and Maintenance: Gain a thorough understanding of all the testing and maintenance required for all key electrical equipment including transformers, inverters, rectifiers, switchgear and circuit breakers, relays and protective devices, cables and accessories, motors, variable frequency drives, uninterruptible power systems, generators, fuses, and industrial batteries Electrical Equipment Inspection and Diagnostics: Learn about the inspection and diagnostics required for all the components of transformers, inverters, rectifiers, switchgear and circuit breakers, relays and protective devices, cables and accessories, motors, variable frequency drives, uninterruptible power systems, generators, fuses, and industrial batteries Electrical Equipment Troubleshooting: Determine all the troubleshooting activities required to minimize the downtime and operating cost of transformers, inverters, rectifiers, switchgear and circuit breakers, relays and protective devices, cables and accessories, motors, variable frequency drives, uninterruptible power systems, generators, fuses, and industrial batteries Electrical Equipment Online Condition Monitoring: Learn about online condition monitoring of transformers, inverters, rectifiers, switchgear and circuit breakers, relays and protective devices, cables and accessories, motors, variable frequency drives, uninterruptible power systems, generators, fuses, and industrial batteries Electrical Equipment Repair and Refurbishment: Obtain a detailed understanding of the various methods used to repair and refurbish transformers, inverters, rectifiers, switchgear and circuit breakers, relays and protective devices, cables and accessories, motors, variable frequency drives, uninterruptible power systems, generators, fuses, and industrial batteries Efficiency, Reliability, and Longevity: Learn the various methods used to maximize the efficiency, reliability, and longevity of transformers, inverters, rectifiers, switchgear and circuit breakers, relays and protective devices, cables and accessories, motors, variable frequency drives, uninterruptible power systems, generators, fuses, and industrial batteries Rotating Equipment Vibration Analysis and Balancing Methods: Learn about vibration analysis and balancing methods of motors and generators. Electrical Equipment Codes and Standards: Learn all the codes and standards applicable for transformers, inverters, rectifiers, switchgear and circuit breakers, relays and protective devices, cables and accessories, motors, variable frequency drives, uninterruptible power systems, generators, fuses, and industrial batteries Equipment Causes and Modes of Failure: Understand the causes and modes of failure of transformers, inverters, rectifiers, switchgear and circuit breakers, relays and protective devices, cables and accessories, motors, variable frequency drives, uninterruptible power systems, generators, fuses, and industrial batteries Generator Upgrades and Rewinds: Learn the various methods used to upgrade and rewind a generator Protective Systems: Obtain a detailed understanding of all protective systems required for transformers, inverters, rectifiers, switchgear and circuit breakers, relays and protective devices, cables and accessories, motors, variable frequency drives, uninterruptible power systems, generators, fuses, and industrial batteries Target Audience Engineers of all disciplines Managers Technicians Maintenance personnel Other technical individuals (this course is suitable for individuals who do not have an electrical background) Course Level Basic or Foundation Training Methods Your specialist course leader relies on a highly interactive training method to enhance the learning process. This method ensures that all participants gain a complete understanding of all topics covered. The training environment is highly stimulating, challenging, and effective because the participants will learn by case studies which will allow them to apply the material taught to their own organization. Each delegate will receive a copy of the following materials written by the instructor: The relevant material of the 'ELECTRICAL EQUIPMENT HANDBOOK' published by McGraw-Hill in 2003 (600 pages) Electrical Equipment Maintenance, inspection, diagnostics, testing, troubleshooting, refurbishment, and protective systems Manual (500 pages) Trainer Your specialist course leader has more than 32 years of practical engineering experience with Ontario Power Generation (OPG), one of the largest electric utility in North America. He was previously involved in research on power generation equipment with Atomic Energy of Canada Limited at their Chalk River and Whiteshell Nuclear Research Laboratories. While working at OPG, he acted as a Training Manager, Engineering Supervisor, System Responsible Engineer and Design Engineer. During the period of time, he worked as a Field Engineer and Design Engineer, he was responsible for the operation, maintenance, diagnostics, and testing of gas turbines, steam turbines, generators, motors, transformers, inverters, valves, pumps, compressors, instrumentation and control systems. Further, his responsibilities included designing, engineering, diagnosing equipment problems and recommending solutions to repair deficiencies and improve system performance, supervising engineers, setting up preventive maintenance programs, writing Operating and Design Manuals, and commissioning new equipment. Later, he worked as the manager of a section dedicated to providing training for the staff at the power stations. The training provided by him covered in detail the various equipment and systems used in power stations. In addition, he has taught courses and seminars to more than four thousand working engineers and professionals around the world, specifically Europe and North America. He has been consistently ranked as 'Excellent' or 'Very Good' by the delegates who attended his seminars and lectures. He written 5 books for working engineers from which 3 have been published by McGraw-Hill, New York. Below is a list of the books authored by him; Power Generation Handbook: Gas Turbines, Steam Power Plants, Co-generation, and Combined Cycles, second edition, (800 pages), McGraw-Hill, New York, October 2011. Electrical Equipment Handbook (600 pages), McGraw-Hill, New York, March 2003. Power Plant Equipment Operation and Maintenance Guide (800 pages), McGraw-Hill, New York, January 2012. Industrial Instrumentation and Modern Control Systems (400 pages), Custom Publishing, University of Toronto, University of Toronto Custom Publishing (1999). Industrial Equipment (600 pages), Custom Publishing, University of Toronto, University of Toronto, University of Toronto Custom Publishing (1999). Furthermore, he has received the following awards: The first 'Excellence in Teaching' award offered by PowerEdge, Singapore, in December 2016 The first 'Excellence in Teaching' award offered by the Professional Development Center at University of Toronto (May, 1996). The 'Excellence in Teaching Award' in April 2007 offered by TUV Akademie (TUV Akademie is one of the largest Professional Development centre in world, it is based in Germany and the United Arab Emirates, and provides engineering training to engineers and managers across Europe and the Middle East). Awarded graduation 'With Distinction' from Dalhousie University when completed Bachelor of Engineering degree (1983). Lastly, he was awarded his Bachelor of Engineering Degree 'with distinction' from Dalhousie University, Halifax, Nova Scotia, Canada. He also received a Master of Applied Science in Engineering (M.A.Sc.) from the University of Ottawa, Canada. He is also a member of the Association of Professional Engineers in the province of Ontario, Canada. POST TRAINING COACHING SUPPORT (OPTIONAL) To further optimise your learning experience from our courses, we also offer individualized 'One to One' coaching support for 2 hours post training. We can help improve your competence in your chosen area of interest, based on your learning needs and available hours. This is a great opportunity to improve your capability and confidence in a particular area of expertise. It will be delivered over a secure video conference call by one of our senior trainers. They will work with you to create a tailor-made coaching program that will help you achieve your goals faster. Request for further information post training support and fees applicable Accreditions And Affliations

​CHANGE YOUR LIFE IN JUST 36 HOURS 3 DAYS PACKED FULL OF FUN, CHALLENGE, INSPIRATION, INSIGHTS AND MOTIVATION. THIS 3- DAY EVENT MIMICS ASPECTS OF YOUR EVERYDAY LIFE THROUGH CHALLENGES, EXERCISES AND TASKS. IT HELPS YOU SHIFT FROM FEELING STRESSED, STUCK, SEARCHING TO ENERGISED, ELEVATED AND ENGAGED.

MASTERCLASS ONE-2-ONE 8 CPD POINTS 1 DAY INTENSIVE COURSE  ONLINE or IN-CLINIC NOTE! After booking we will contact you for scheduling the exact course date! Courses dates are subject to change due to mentors availability. We will inform you via email if a date becomes available! PDO Threads course Our one-day Harley Elite Academy PDO cog thread lift ( Elite Mini Face Lift )training course is providing for Doctors ,Nurses , Dentist looking to further to present non-surgical facelift. It s the newest trend made popular by some of celebrities recently and it is an amazing and effective latest technique to mehanical lift and tighten skin. We provide second option using mono and screw it has the potential to redefine facial contours and induces collagen production. This type threads support structure for the tissue of the face by encouraging natural collagen synthesis with 30 % immediately results that peak at 6 months and more. During the training learn how to safely achieve mid and lower face lift and tight , we aim to help you master class techniquesre-volumisation and lifting using one of the highest quality products on the market PCL Threads.   Thread Lift Masterclass Course You will perform this procedure on live models under the supervision You will practice using This master training will teach you how to introduce threads in Body areas including: Inner Thigh | Inner Arm | Knee | Tummy | Buttock Using threads: screw, mono and cogs. During Dermal Filler Masterclass, you will learn the full Anatomy of the face and gain practice.Anatomy, Vascular Supply of the face, Nerves Contraindications Complications Management Post treatment advice Additional information ATTENDANCE ONLINE (theory), IN-CLINIC (Practice) PDO THREADS LIFT AREA BEGINNER Face and Neck Threads Lift, ADVANCED Body Threads Lift, MASTERCLASS Face, Neck, Body Threads Lift, MASTERCLASS Foxy Eyes | Cat Eyes

MySQL foundation training course description The MySQL foundation course covers the basics of the SQL language as implemented by MySQL. The course is designed to give delegates practical experience in writing SQL statements using the MySQL client program and MySQL Workbench. The basic SQL statements, including the use of SQL functions and the basic table and view handling statements are introduced. What will you learn Create, alter and drop a MySQL database. Write SQL statements. Use SQL expressions and functions. Create and alter tables, indexes and views. Use transactions. Grant and revoke access privileges. Export and import data. MySQL foundation training course details Who will benefit: Anyone who needs to access and work with a MySQL Database. Prerequisites: An understanding of databases and exposure to information technology in general would be useful. Duration 3 days MySQL foundation training course contents Database concepts What is a database? database management systems, tables, rows and columns, indexes, primary keys, unique constraints and foreign keys, client-server architecture, supported data types, storage engines and table types, Information_Schema and MySQL Databases. Hands on using a database. Using the MySQL client What is the MySQL client? getting started and logging in, selecting a database, client commands, entering and executing SQL statements, retrieving previous commands, creating, editing and executing SQL files, redirecting output into a file, command line execution of MySQL scripts. Hands on Using the MySQL client. Basic SELECT The SQL SELECT statement, case sensitivity, quotes, statement terminator, syntax conventions, SELECT clause, FROM clause, conditions and the WHERE clause, logical operators, ORDER BY clause, column aliases, arithmetic expressions, precedence of operators. Hands on querying the sample database. LIMIT, UNION and AGGREGATE functions The LIMIT clause, UNION, UNION ALL, aggregate functions, GROUP BY clause, using Rollup with GROUP BY, HAVING clause. Hands on using limit, union and aggregate functions. Subqueries and joins Subqueries, cartesian products, table aliases, natural joins, join using, join on, multi-table joins. Hands on using subqueries and joins. Numeric and character functions Function types, testing functions, numeric functions character functions. Hands on using numeric and character functions. Data, time and other functions Date and time column types, date and time formats, Date format function, functions to return date time, functions to extract components from date time, date time arithmetic, miscellaneous functions. Hands on using date, time and other functions. Databases and tables Creating a database, selecting a database, creating tables, Auto_increment, show create table, column operations, constraint operations, copying tables, renaming tables, changing engine for tables, dropping tables, temporary tables. Hands on maintaining databases and tables. Indexes and views What is an index? creating an index, reviewing indexes, dropping indexes, what is a view? creating views, view restrictions, dropping views. Hands on maintaining indexes and views. Managing data Inserting rows, replacing rows, updating rows, deleting rows, Truncate statement, The COMMIT and ROLLBACK commands, savepoints, implicit commits. Hands on managing data. Access control Creating users, renaming users, dropping users, granting privileges, revoking privileges. Hands on creating users, granting and revoking. Import and export Exporting using SQL, importing using SQL, exporting from the command line, importing from the command line. Hands on export and import data.

DNS training course description This three-day hands on DNS training course studies both the UNIX BIND and the Microsoft (MS DNS) implementations. The course starts with the big picture of how DNS works, then client configuration. Primary and secondary servers are then configured, progressing to DDNS, subdomains and security issues. Hands on sessions follow all sections ensuring that troubleshooting techniques are used throughout the course. Students choose whether to use Windows or UNIX for the hands on sessions. What will you learn Describe the architecture of DNS. Explain how DNS works. Install, configure, maintain and troubleshoot DNS DNS training course details Who will benefit: Technical staff wanting to learn DNS including: Network personnel System administrators. Prerequisites: UNIX Fundamentals (or Windows knowledge). TCP/IP foundation for engineers. Duration 3 days DNS training course contents What is DNS? Hostnames, Name resolution, host files, host file problems, What is DNS? The DNS namespace, TLDs, gTLDs, registering domains, Nameservers, how DNS works. Hands on Testing DNS servers on the Internet. DNS clients Ways to use DNS, dynamic and static configuration, multiple nameservers, domain name, searchlist, resolution issues, testing the configuration. Hands on Client configuration. DNS server software Implementations, Microsoft, BIND, daemons and services, installation, starting and stopping servers. Hands on Setting up a DNS server. DNS zone files What is a zone, Zone file overview, Forward zones, Reverse zones, Resource records, A records, PTR, CNAME, Root hints, local zone file. BIND and Microsoft configuration. Hands on Server configuration files. NS and applications MX records, Mail server load balancing, SPF, SRV records, VoIP and SRV, Microsoft and SRV, NAPTR. Hands on Testing records with dig and nslookup. DNS slaves and other servers DNS server types, Server resilience, Slaves, Zone transfers, SOA records, Serial numbers, recommendations, polling based zone transfers, NOTIFY, AD integration, DNS caching, Negative caching, TTL, Caching only servers. Hands on Masters, slaves and zone transfers. The DNS protocol The DNS stack, DNS port numbers, DNS queries, The DNS header, header section format, question format, other section format. Hands on Troubleshooting DNS with Wireshark. Dynamic DNS DHCP, DDNS, IXFR, WINS integration. Hands on Dynamic DNS. Subdomains Root servers, root server selection, Authority, delegation, NS records, subdomain with and without delegation, reverse delegation. Hands on Delegation, setting up a subdomain server. DNS security Restricting queries, DNS and firewalls, Split DNS, forwarders, internal root servers, the use of proxy servers, DNSSEC, TSIG. Hands on Hardening a DNS server. DNS and IPv6 What is IPv6, IPv6 addressing, IPv6 DNS issues, AAAA, IPv6 reverse delegation. Troubleshooting DNS Problem solving, DNS troubleshooting, Zone file checking, Some common errors, Log files, tools, nslookup, dig, host, DNS design, performance, load balancing. Hands on Putting it all together. Summary Useful books, Internet sites, RFCs. Appendix: ENUM What is ENUM, How ENUM works, NAPTR.

IPTV training course description A current hot topic in recent years has been the provision of multimedia services over IP networks aka triple or quadruple play. This course investigates the characteristics of video transmission and then studies the impact on IP networks. What will you learn Use Wireshark to analyse and troubleshoot TV streams. Describe techniques, which can be used in IP to provide low uniform delay. Evaluate IPTV technologies. Design data networks, which will support IPTV. IPTV training course details Who will benefit: Anyone working with IPTV. Prerequisites: TCP/IP Foundation for engineers Intro to data communications & networking. Duration 3 days IPTV training course contents What is IPTV? What is IP? What is TV? Pixels, frames, colour, digital modulation, digital video broadcasting. SDTV, HDTV, 4K. IPTV architectures, Contribution, distribution, delivery. IPTV standards. Hands on Base IP connectivity, VLC. IPTV protocol stacks IP, TCP, UDP, RTP. IPv6. HTTP. Bandwidth requirements. Hands on IPTV bandwidth calculations. Video codecs What is a CODEC, pictures and audio, digitisation, sampling, quantisation, encoding, compressing. MPEG, bit rates, resolution. I, B, P frames, GOP. MPEG 2, MPEG 4, H.264, H.265, VP9, AV1. Hands on Analysing MPEG frames. IP issues Quality vs. bandwidth. Bandwidth, delay, latency, jitter, signalling. Routers. Hands on Analysing jitter and other performance issues. IPTV performance and QoS IP DSCP field, queuing strategies; FIFO, WFQ, custom, priority, RED. Differentiated services, Diffserv. 802.1Q. Traffic shaping. QoE. Hands on best effort versus prioritisation. UDP versus TCP Reliable, unreliable, connection oriented, connectionless. Broadcasts, multicasts and unicasts. TCP flow control, TCP and performance. Hands on TCP window sizes. RTP RTP, ports, mixers, translators, RTCP, SMPTE, FEC. Hands on RTP analysis with Wireshark. Multicasting Multicasting compared to unicasting and broadcasting, when to use and when not to use multicasting. IGMP, PIM-SM, SSM. MLD. Hands on Analysing multicast streams. OTT TV HTTP, HTTPS, Chunked HTTP. Adaptive streaming. HTML5. DASH vs HLS. Hands on Analysing HTTP streams. Security Firewalls, TLS, DRM, watermarking. Encryption. Geolocation. VPNs. IPTV architecture and other protocols Content providers, Service providers, delivery networks, home networks. Caching, Service discovery. RTSP. SAP, SDP. DHCP, DNS, NTP Hands on Fixing the network.