©2026 Automation.com, a subsidiary of the International Society of Automation.
Articles and News
33,445 Results Found
-
Executive Interview - Blake Moret, Senior Vice President at Rockwell Automation
By Bill Lydon, Editor I recently had the opportunity to talk with Blake Moret, Senior Vice President at Rockwell Automation. Other than their process control initiatives, we discussed networks, energy monitoring, embedded controllers, regenerative energy and their services business. -
Rotork actuators supply water to Coal mine
Rotork supplied valve actuators for the pipework delivering water to the north and south coal processing (washing) plants for Mount Thorley Warkworth (MTW) in New South Wales, Australia. -
Level Measurement: Determining Interface Position Between Two Media
Many techniques are available for the level measurement of media interfaces, each with its own trade-offs of advantages and limitations. -
Management's View of Automation - Investment Value
By Bill Lydon, Editor Part 2 - A survey conducted by pharmaceutical companies identifies their return on investment (ROI) of automation projects. The most enlightening (and disturbing) facts came out in a panel discussion of the survey results - it appears Operations and Automation people are not communicating enough. -
How to Choose a Non-Contact Infrared Temperature Sensor
By Solutions Direct White paper includes some basic questions to help customers choose the correct fixed mount pyrometer. -
ASM publishes catalog of position sensors
Catalog also provides engineers with a practical decision-making tool for selecting the right position sensor. -
PLCopen updates User Guidelines for Motion Control
User Guidelines contain easy-to-understand application examples and show how to create user-derived function blocks to add to a company specific library, improving the reusability of the application programs. -
How to Use Simulation and Virtual Plants for Process Improvement
First principle models & experimental models in a virtual plant offer powerful tools for process control improvement and an operator training system. -
DIN Rail Industrial PC Market to Grow in 2013
IMS says the DIN rail industrial PC (IPC) market is projected to be the fastest growing of all industrial PC types in 2013. -
ABB to fund 40 research projects at universities
The ABB Research program is intended to support promising graduate students and senior researchers who are researching projects with industrial applications in the power and automation area. -
exida certifies Emerson DeltaV SIS with electronic marshalling
exida issued a functional safety certification per the IEC 61508 and several application standards for the Emerson Process Management DeltaV CHARMS SIS product line. -
Biglia uses Siemens controllers in Quattro turning centers
Biglia's multi-functional turning centers of the 'Quattro' series use the Sinumerik 840D sl CNC. -
Rockwell Automation releases tools for Machine Safety Design
Free Safety Automation Builder tool and Safety Functions help automate safety-system development and save machinery design time. -
Dale Gaerke Selected 2013 Engineer of the Year by the Toledo/Northwest Ohio Community
Dale Gaerke Selected 2013 Engineer of the Year by the Toledo/Northwest Ohio Community -
China Motion Control Market will grow in 2013
According to IMS Research, the China market for motion control machinery shrank last year, but prospects will improve moving forward as the industry shifts focus to satisfying domestic needs. -
CIMdata publishes Simulation & Analysis Market Report
The report, one part of CIMdata’s expanded coverage of this PLM segment, includes a revamped market segmentation, a discussion of trends in the market, and profiles of the leading S&A firms. -
B&R adds Machine Control Group as distributor in Missouri
Machine Control Group, an engineering focused solution provider, will represent B&R Automation in Missouri, Arkansas, and western Tennessee. -
Progea updates Movicon Apps for Android 4.0 & iPhone/iPad
The new Apps for iOS operating systems (iPhone and iPad) and devices based on Android 4.x. are now downloadable from the respective stores. -
Falcon Electric includes 12-Year batteries in SG Series UPSs
The 12-year rated valve-regulated lead acid (VRLA) batteries will extend maintenance cycles of their popular SG Series UPS product line. -
AIA USB3 Vision Standard Available for Download
This standard is based on USB 3.0 consumer hardware. Vision component manufacturers have embraced the standard and are expected to widely adopt it; many components are already selling today. -
Endress+Hauser Announces May Training Schools
Classes typically are a combination of classroom and hands-on training on either the Endress+Hauser Process Training Unit (PTU), a full-scale, working process skid with on-line instrumentation and controls, or live instruments in training stands, both designed to simulate operating conditions. -
Kollmorgen adds PROFINET interface to motion control platform
The fieldbus interface increases the communications flexibility of the automation system for machine builders and end-users alike, further enabling the realization of the best possible application performance. -
Dataforth publishes MAQ20 DAQ Brochure
MAQ20 brochure describes Dataforth’s industrial data acquisition and control system, PID loop controller, and PEmotion data acquisition/test and measurement software. -
Northwire publica catálogo en español
2013 Northwire Northwire-NWI catálogo Lab360 idioma español está ahora disponible. -
BACnet International releases BACnet/IP Simulation System tool
BACnet/IP Simulation System (BOSS) tool is a fully configurable BACnet device simulator coupled with network discovery and debug facilities. It is intended to facilitate product testing by manufacturers and assist integrators in assessing system performance before installation. -
Early College EAST wins Nanoline Contest
The team designed and built the “Delian One Remotely Operated Vehicle” which uses Phoenix Contact’s Nanoline Controller and nanoNavigator software to remotely maneuver and explore an underwater environment. -
CSIA Conference announces Keynote speaker
Economist Alan Beaulieu is optimistic about the future of manufacturers and the control system integrators who help them automate industrial equipment and systems. Beaulieu will deliver the keynote address at the 2013 Executive Conference of the Control System Integrators Association, May 1 – 4. -
What in the world is happening? Find out at Hanover Messe 2013
By Bill Lydon, Editor To remain competitive, a company needs to constantly expose its people to new ideas, processes, and technology. The investment in people attending trade fairs, like Hannover Messe, is a knowledge investment that is fundamental to maintaining and improving manufacturing competitiveness. -
Automation Imperative - Core Business Function
by Bill Lydon, Editor The success factors in manufacturing are changing - making it imperative that all size companies use automation as a strategic tool to compete. Companies large and small can cost-effectively implement automation systems ranging from robots to full-scale enterprise integration. -
The Royal Mint monitors royal Effluent
The Royal Mint makes coins and medals for 60 countries. It uses Analytical Technology’s pH, hydrogen peroxide and turbidity sensors for its water monitoring needs. -
Lantech publishes 2013 product guide
The 2013 product guide features a complete selection of Lantech product lines, including new industrial DNV switches, industrial IEC 61850-3 switches and industrial managed switches. -
Control Techniques signs CP Automation as integrator
CP Automation is a specialist in the repair and replacement of automation equipment including electronic boards, PLCs and AC and DC drives.It will work in the UK cranes and hoists market. -
Westermo North America Moving its Head Office
The new location in Elgin, IL, will give the company significantly more office and warehouse space plus a laboratory and a training area for customers. -
A New Approach to Advancing the Connected Enterprise
A New Approach to Advancing the Connected Enterprise -
Always Design in Spare Capacity to Allow for Industrial Plant Expansion
A common rule of thumb for most systems is to add at least 25 percent spare capacity to the original design. -
Automation Federation helps Obama with cybersecurity
Representatives of the Automation Federation participated in key meetings with White House National Security Staff to help forge national cybersecurity standards, guidelines and compliance testing. -
Sercos announces YouTube Channel
The sercos international channel offers videos on hot topics in the automation and machinery industry as well as interviews, exhibition films and introduction of member companies. -
Heidenhain offers Interactive CNC Training Online
Training is intended for those interested in CNC qualification, as well as students and teachers who are interested in obtaining expert materials on CNC programming and machine operation. -
Advantech Achieves Hazardous Area Certification for I/O modules
ADAM-4000 and ADAM-6000 series have been certified with Class I, Division 2 Groups A, B, C, D approval for use in hazardous locations where highly flammable substances may be present. -
Take a Fresh Look at All the Ways You Can Make the Most of Your ISA Membership
ISA provides its members with immeasurable opportunities to receive through collaboration, mentorship, volunteerism, sponsorship, and student scholarships. -
Honeywell to control Russian refinery
Honeywell will supply an Experion Process Knowledge System (PKS) and Advanced Alarm Manager system to OOO Kirishinefteorgsintez for its refinery in Kirishi, Russia. -
B&R signs WE Automation as distributor
Based in Philadelphia, PA, WE Automation will serve the eastern Pennsylvania, southern New Jersey and Delaware markets. -
aPriori supplies product cost management software to ATV
Advanced Technology Valve in Italy will use aPriori Product Cost Management (PCM) software to replace manual cost estimating processes for its valve components. -
Hydraulic Equipment Getting Smarter
Frost & Sullivan says manufacturers are attempting to attract additional end users by developing integrated hydraulic equipment products that are cost effective, compact and user friendly. -
Tridium Names DiCosmo President and General Manager
Before joining Tridium, DiCosmo was a Senior Vice President and General Manager of New World Systems, and President and CEO of Trubiquity. -
Emerson's vortex flowmeters help steel plant cut energy
Rosemount 8800 Vortex flowmeters accurately measure and optimize oxygen used in MORE s.r.l.'s electric arc furnace steel making processes. -
ISA publishes new book on cybersecurity
"Industrial Automation and Control System Security Principles" outlines security principles, practices and standards that can safeguard critical infrastructure, defense establishment, and production capabilities from the risks of cyberattack. -
Metso to build biomass power plant in Russia
The power plant will utilize bark and wood residues from the Syktyvkar sawmill and other biomass to produce 4 MW of power. Metso will supply process equipment and automation. -
Red Lion Controls Celebrates 40th Anniversary
Since its birth in a Pennsylvania garage in the early 1970s, Red Lion has expanded its operations to include more than 15 offices across the Americas, Asia-Pacific and Europe. -
INSYS icom announces OpenVPN Connect app
App lets devices featuring openVPN be accessed via Apple smartphones and tablet PCs. -
Improving Distillation Tower Operation
Improving Distillation Tower Operation -
Water Industry Needs to Clean Up its DO Sensors
A roundtable discussion with water industry and regulatory experts says there is a need for improved maintenance of dissolved oxygen sensors to increase the accuracy of measurements. -
BearCom publishes Wireless Products & Solutions Guide
Guide covers two-way radios, team communication systems, push-to-talk phones and broadband cards, WLAN systems, IP video surveillance cameras, mesh broadband networks, point-to-point bridges, and more. -
U.S. manufacturing technology orders: Best year since 1996
December U.S. manufacturing technology orders totaled $499.43 million according to AMT, the highest order total in 13 years. -
Rotork actuator qualifies for nuke service
The qualification encompasses the requirements of the Westinghouse AP1000 commercial nuclear reactor design. -
Moxa Remote I/O cuts Bridge's Cabling Costs
Moxa's ioLogik E1212 Ethernet remote I/O is being used on the Gateway Bridge upgrade project in Brisbane, Australia. -
Robots Create Jobs, Enable Small Companies to Compete Worldwide
By Bill Lydon, Editor The International Federation of Robotics (IFR) provided a review of industry growth and hosted the IFR CEO Round Table discussion at AUTOMATE in Chicago. The bottom line is...robots create jobs by enabling manufacturers to be globally competitive and grow more quickly. -
ABB to provide electrical systems for drill ships in Brazil
ABB will supply complete electrical systems including generators, distribution switchboards, transformers, drives and motors to power the ships’ thrusters and drilling systems. -
InduSoft joins BACnet International
As a silver member, InduSoft joins over 80 of the leading building automation vendors in the world in pursuing advancement of BACnet as a communication protocol. -
How to Improve Setpoints in Industrial Processes
Setpoints in industrial automation and manufacturing processes can be improved by achieving a higher level of control and knowledge. -
Management’s View of Automation - Impressions of Automation Performance
By Bill Lydon, Editor A survey conducted by pharmaceutical companies of their operations management indicates management has higher expectations of benefits from automation than is being realized in their plants. Responses of that survey are highlighted in this Part 1 article from the 2012 Pharmaceutical Automation Roundtable. -
Growth of Medium-voltage drives mixed worldwide
IMS Research projects fewer instabilities in the US and Chinese MV drives markets in 2013, and predicts global market growth of 10 percent--despite a contraction of 4.6 percent in Europe. -
MDA South America Power transmission show
For manufacturers of power transmission and control technology, MDA South America will be held in São Paulo in March. -
Advanced Alarm Notification Improves Hydro Operations
Brookfield Renewable Energy uses Exele Information Systems’ TopView Alarm Notification software to monitor values in the data historian. -
General Monitors Flame Detector Obtains EN 54-10 Certification
FL4000H flame detector has been certified by the Building Research Establishment (BRE) Global Group to the EN 54-10 standard of the European Construction Products Directive (CPD). -
Mexican and Wisconsin firms earn CSIA certification
The Control System Integrators Association (CSIA) announces that Electro Controles del Noroeste SA de CV, Hermosillo, Sonora, Mexico, and P.J. Kortens and Company, Inc., Appleton, Wis., U.S., became CSIA Certified. -
Hilscher signs two U.S. distributors
Hilscher enters U.S. market by signing Professional Control Corporation (PCC) in Germantown, WI and Electro-Matic Products (EMP) in Farmington Hills, MI, as distributors of fieldbus products. -
R Stahl obtains FF registration for field device couplers
Series 9411/21 and 9411/24 isolating device couplers met the FF-846 test specification to obtain formal Fieldbus Foundation registration. -
Mettler-Toledo publishes weigh module integration handbook
Handbook provides expert advice on the design and application of load cells and weigh modules for tanks, silos, vessels, hoppers and conveyors. -
ABB to upgrade HVDC link in Oregon
ABB will upgrade the existing Celilo HVDC (high-voltage direct current) converter station in Oregon with valves, controls, transformers as well as switchgear and cooling equipment. -
Tuning PI controllers for stable processes with specifications on gain and phase margins
Tuning PI controllers for stable processes with specifications on gain and phase margins -
Michael Squyres selected as the 2013 ASGMT General Chairman
American School of Gas Measurement Technology is the largest gas measurement school in the United States devoted to natural gas and natural gas liquid measurement, regulation and control. -
North American Robotics Market Sets New Records in 2012
A total of 22,598 robots valued at $1.48 billion were sold to companies in North America in 2012, beating the previous record of 19,337 robots sold in 2011. -
Thin Clients Eliminating Plant Floor PCs
By Bill Lydon, Editor With higher speed and more reliable Ethernet networks, lower cost more powerful computers, and virtualized systems, Thin Clients are becoming effective replacements for PCs. -
MESA elects Dennis Brandl chairman of the board
Dennis Brandl, founder and chief consultant for BR&L Consulting, has been named Chairman, Americas Board of Directors, MESA International. -
Current trends in RFID
While much is written about RFID and how it will change the face of distribution, it is time to address several misconceptions about the technology and discuss the effects that recent developments have had on the discrete manufacturing sector. -
The Advantages of Safety Networking over Point-to-Point Wiring for Integrating Multiple Safety Components
This article examines how this new networking method compares to traditional wiring and the advantages of implementing safety networking. -
Characterizers for Control Loops
Two examples are given here where the gain variation was sufficient to cause control problems, and was corrected by applying characterization. -
Linear Motors Complement Today's Linear Motion Technologies
Advancements in linear encoder technology allow higher speed operation too. Today's linear encoders and other devices are able to meet this challenge, are less noise susceptible, and cost less. -
Insider Tips on Buying a SCADA System
One of the most important and difficult decisions is often the very first decision: do you upgrade with internal resources or hire an outside consultant? Some of the arguments for each side in this debate are obvious. You know what you want better than anyone, but a consultant may have more experience in the actual process of acquiring a SCADA system. There’s a lot to be said in favor of both approaches. Neither is an inherently good or bad approach. We summarize below the key issues and how they affect both of these approaches. -
Material Handling: Sensing Challenges & Solutions
For many OEMs, choosing the right sensor manufacturer is concern number one. OEMs want a manufacturer with a trusted name in the material handling industry. -
The 3 Technology Laws
As more and more "nodes" become connected – products, equipment, people, organizations – Metcalfe's Law comes into play. The effectiveness and value of the Internet continues to increase exponentially. -
Web-Enabling Variable Frequency Drives
The level of control and the amount of information available are significantly improved over earlier methods. Most importantly, with web-enabled Ethernet, the ease of both getting information and displaying it is on an entirely new level than was possible with older technologies -
Intelligent Sensors Enable Companies to Start a Predictive Maintenance Program Without Expert Vibration Knowledge
Historically, expert knowledge of vibration analysis was required to start and maintain a vibration-based predictive maintenance program. This white paper describes how using intelligent sensors can alleviate the need for vibration experts. -
Optimizing OPC Communications with OPC Middleware Products
OPC middleware products are designed to enhance any OPC-based application. An intelligent set of OPC products simplifies the commissioning and operation of OPC clients and servers, significantly improves the data throughput of your OPC interfaces, and ensures reliable OPC communication links. -
Improving Plant Production with Wireless Condition Monitoring
Because the machines may be in remote locations where network infrastructure is not available, or on moving platforms where hardwired network connectivity is not practical, wireless communications is a networking alternative that offer installation cost savings, quicker deployment and even improved reliability in certain situations. -
The Need for Wireless Monitoring - An Overview
Wireless monitoring of valves can revolutionize industrial processing and help industries meet the demands of increasing competitiveness. Intelligent wireless valve monitoring in industrial environments enables real-time data sharing throughout a facility and this, by definition, increases industrial safety, efficiency, and productivity. -
Galil updates GalilSuite Software
Enhancements in Revision 1.0 include an improved user interface, servo tuning capabilities with multiple tuning methods, real-time scopes, multiple device management and simplified communications. -
Westermo Ethernet switches to be installed in Stadler trains
Westermo will supply Viper EN50155 data communications equipment for Stadler Pankow's new FLIRT trains (Fast Light Innovative Regional Train). -
Honeywell to control petrochemical plant in Abu Dhabi
Honeywell will supply integrated control and safety systems for the Borouge petrochemicals complex in Ruwais, Abu Dhabi. -
Why Use Temperature Transmitters Instead of Direct Wiring?
Here are just some of the reasons why you should use intelligent temperature transmitters in place of direct wiring strategies -
Background Suppression with Photoelectric Sensors – Challenges and Solutions
When using photoelectric sensors in simple diffused mode (a.k.a. proximity mode), the sensor uses the target to reflect light back to itself, eliminating the need for a secondary device such as a reflector. -
Reaping the Rewards of a Remote Monitoring and Diagnostics Program
Proactive monitoring of rotating equipment and control systems can increase plant efficiency and reduce unplanned downtime, operating and maintenance costs -
e-Kanban: A Key to Lean
Kanban is a visual signal that something needs to be replenished. Lean Manufacturers today use Kanban to drive a process to make, move, or buy the appropriate parts. Thus, Kanban becomes one of the fundamental building blocks of a pull (or consumption based) replenishment system. No card? No Replenishment. Paper kanban intent has efficacy; the reality of cluttered transport routes, overflowing finished goods stores, immense quantities of WIP (work-in-progress) and unscheduled machine downtimes, often make the merits of this lean manufacturing functionality questionable. When there are also frequent complaints about delivery problems, the reality is quite distant from the theory. Poor implementation of kanban is quickly overcome in an e-kanban environment. Sue Via, Senior Project Engineer with TechSolve (www.techsolve.org) suggests that Kanban is only part of the lean process, “Kanban is a higher order concept and many things must be in place before implementation of the concept is feasible. For instance, the foundation of Standard Work, 5S/Visual Management, and Quality at the Source must be in place and functional. All affected processes should go through an initial lean transformation to eliminate waste, establish Flow and initiate a Pull mindset. All processes including equipment must be reliable in order to minimize the inventory requirements.” Two of the primary limitations of a manual (or paper based) Kanban system are data availability and scalability. According to Justin Diana, VP of Datacraft Solutions (www.datacraftsolutions.com), “In a typical manual Kanban implementation, most transactions and orders are placed with faxes and emails and recorded in an Excel spreadsheet. At the end of the day, this information is limited to the individual managing and recording this data. The individuals responsible for growing and improving the process, have limited or no visibility to the data. As the number of parts, suppliers, and cells grow, managing this process only becomes more convoluted.” e-kanban, in contrast, focuses specifically on centralizing and managing all of the mission critical data. Real-time transaction capture and tracking builds a repository of information, ripe for process improvement analysis. Allowing an e-kanban system to handle and manage the collation and reporting of this data helps to remove the element of human error prevalent within a manual kanban system. The difference between kanban (a signal to trigger specific quantities of supplies in a just-in-time system) and e-kanban, is working more efficiently and effectively with a lean process. Blanket Purchase Orders, Internal SuperMarket Consumption Signals Replenishment, and Breeding proactive suppliers are three Direct Benefits of Lean e-Kanban. Justin Diana also suggests that, “One other limitation to a manual kanban system is the unpredictable and undependability of the communication... questions such as did they get it? Do they understand it? Am I going to get it? keep buyers awake at night.” Indeed, e-kanban collaboration erases those fears. Electronic records of pull requests, receipt timestamps and electronic acknowledgements all work towards a more unified and dependable method of pull communication. Via suggests that even e-kanban may have limitation in certain environments: “Electronic kanbans are effective when distance is a factor in the process; such as multiple buildings, locations; however, it may be too time consuming when the handoff points are adjacent or close to each other; such as different departments or processing equipment.” Once the discipline and visual aspect of kanban has been implemented internally, the next logical step is to apply the process externally to outside supplying entities. Lean Manufacturing relies heavily on trusted relationships with those suppliers and pre-negotiated terms of engagement. Through the use of quality certification and blanket (long-term) Purchase Orders, the manufacturer can accurately and effectively calculate the optimal level of inventory needed to fulfill demand requirements through the duration of Replenishment lead time. At the end of the day, effective kanban is the sum of a simple calculation. e-kanban products must provide a steady and predictable demand over a forcastable period, supplied by an entity that provides virtually defect free product in the negotiated period of time in the negotiated quantity at the negotiated price. e-Kanban: Vendor requirements When a relationship is setup with a supplier a service level agreement is defined. Items such as negotiated lead times, packaged quantities, order receipt confirmations, and advanced shipment notices must all spelled out very specifically. An e-kanban system monitors that each of these service level agreements are being met by the supplier in real time. If they are not, a series of alerts and notifications starts to be issued to all interested and affected parties. This gives everyone a chance to adjust their behavior to bring performance back in line in real time. e-kanban also captures all of this real time information and makes it available for historical analysis. It is made available over the internet twenty-four hours a day, so that all parties can see trends in performance. Late shipments, short shipments, and other supply chain performances are all captured and presented in terms of percentage of conformance to the service level agreement. These visuals give everyone in the supply chain information about how to focus their continuous improvement energies. e-Kanban: Only one Lean Manufacturing component e-kanban is heavily based on Lean and Six Sigma principles and tools, and the ability to effectively support a production system is critical to Best Practices. e-kanban is a critical Lean element focused on improving flexibility through the elimination of waste; e-Kanban is focused on quantifying the flexibility so that manufacturers and suppliers can rapidly evaluate the true capability of the system to respond to a specific change. Even a Lean production system could struggle to accurately respond to a new order requirement from a customer because it would take longer to identify the source of the constraint and begin resolving it. Implementing pull systems (e-kanban) with more customers is the increasing direction of manufacturing operations utilizing lean. Via argues that e-kanban only makes sense as part of an overall lean process, “Kanban in conjunction with other Lean concepts focuses on Just-in-Time delivery and the reduction of inventories. An effective kanban system requires that all non-value-added activities be eliminated or reduced in order to shrink the required Lead Times.” *** -
From simulation to plant floor control
With xPC Target Turnkey, users can do virtual design and debugging of machines, production lines and processes and the results will be automatically implemented in real control systems. -
Industrial Wire Management & Organized Wiring Systems
Structured cabling in commercial buildings based on TIA/EIA standards has become a common practice in many building automation system applications. Panduit is promoting similar approaches for industrial automation. Jeff Paliga of Panduit answered the following questions about their approach. -
Benefits of Fuzzy Logic for Advanced Process Control
The paper, “Nonlinear Control and Decision Making Using Fuzzy Logic in Logix,” provides best practices for designing with fuzzy control and examines its benefits compared to conventional control methods. -
A new approach to robotic safety: SafetyBUS p at BMW
The development of fieldbus for safety-related applications and new International and European Standards have fundamentally changed the manner in which safety is now being engineered in the plant. BMW are the first to directly integrate robotic safety functions using a safety-related fieldbus. -
Price/Margin/Volume Mindset Inhibits Growth
Most people consider low price to mean lower margins. This is not necessarily true. A high priced control system may still only generate low margins. And too, low-priced, high value, high volume products could generate healthy margins. The key, of course, is to pursue a balanced value proposition. -
Guided Wave Radar Transmitters:Meeting the Challenge for Level-Detection Under Harsh Conditions
A quick examination of how guided-wave technologies compare against other time-of-flight technologies, such as through-air radar and ultrasonic —along with a discussion of application guidelines—can serve to elucidate the benefits that this new technology can bring to engineers needing to improve process operations.















