Yet another squally day in Ayrshire. Still, the daffodils seem to be pressing on undaunted. Im sure spring will not be too far off now. The plants are keeping the faith even if us humans seem to be finding it difficult.
Who can tell exactly when the places of our childhood begin to die? I was born in the Irvine Valley in Ayrshire. Once, it was a string of thriving, happy-go-lucky little towns made famous by lace manufacture.
As an industry, it couldn't begin to rival the scale of Clyde shipbuilding or the romance of tourism. But my valley was good at lace. The climate is damp. And that meant that the thread was less liable to break. Here was the last remaining cluster of producers of high-quality "Nottingham" lace.
Today, almost all trace of this manufacture has gone. The factories have closed and many of the little shops and livelihoods they supported have fled. There are clusters of well-kept houses and tidy gardens, and the occasional spear of fresh start and new endeavour. But there are long stretches, too, where my disappearing valley runs like a frayed, grey thread of boarded-up shops and dereliction. In between, there is an ever encroaching latticework of trees and hedgerows as, with every year, through an insidious, relentless stealth, nature reclaims a little more of its own.
My valley now is little more than a ragged, untidy slow-down, a forgettable depression as the traffic on the A71 thunders through on a longer journey to somewhere else. Coming from Edinburgh on this road, the valley starts in the east, with the dramatic volcanic plug of Loudoun Hill, scene of battles fought by doughty patriots and Covenanters. In the westward lee of Loudoun Hill can be found the farmhouse home of Scottish artist Glen Scouller. It was his wonderful paintings of the valley - full of colour and freshness and light - that reminded me what a cheerful place this was in my childhood, and still may be.
After Loudoun Hill comes a swift procession of little parishes and towns: Priestland; the "lang toon" of Darvel, birthplace of Alexander Fleming, with its gaunt, grey, terraced houses and long, mournful windows; then Newmilns and the prettily maintained Flora Institute; Galston; Hurlford and Crookedholm. These were distinct places as I remember them. Now they are part of an understated same.
The incessant traffic rumbles on through, for there is no obvious reason or attraction to stop. Parts of the valley have succumbed to dormitory status for the bigger conurbations of Kilmarnock to the west and Glasgow to the north, and other parts have succumbed to social dumping. The sense that prevails is of a valley that has fallen to a quiescence of ghosts.
Sometimes, it seems as if the valley has never looked more pastoral and serene as it reverts to a pre-industrial state. But, to those who know the valley, those brought up in it, it is impossible not to sense the decay, the spooky presence of abandonment. Old landmarks have disappeared. Shops have long closed, houses boarded up. With each year, the streets become more run down and forlorn.
I was born in Newmilns, next to the printing press of the local newspaper, which inspired me to journalism. And I went to its proud little school. I remember the bustle of its main street on Saturday mornings, the smell of sacking and coffee beans in the grocers and the magical ice-cream machine in Mr. Perry's café. Mr. Perry was a voluble Italian of Pavarotti proportions. When his shop was open, it seemed the street was full of sunlight - and his imprecations when we stole his cones. When it closed, the entire valley darkened. I was told that when he died, he was so full of ice-cream and macaroni, he exploded. How could I not believe that?
Now, the main street is marked by boarded-up doors, down-at-heel shops and an off-license with a bleak steel grille across its windows. The process of tumbledown took such hold that even the Edwardian sandstone Co-operative store - the only building in the main street with any swagger - had given way to chickweed and buddleia sprouting out of its gaunt and gaping windows.
The worst depredations have now been cleared, thanks to the Irvine Valley Regeneration Partnership's clean-up work. Other glaring eyesores have been removed. But it is a battle against hopeless odds. Regeneration work has not reversed the damage, just daubed lipstick on a dying mouth.
In my youth, Newmilns was a bustling town. It had a quiet busyness and purpose, and a beat to its heart. There was a cinema, a railway station, a handsome school, and the wonderful local newspaper, the Irvine Valley News, with its Wild West masthead and long columns of unbroken type. The editor was Bertie Green, a former Glasgow Evening Times staffer with a face not so much lived in as bounced on, like a wrinkled trampoline.
Every Thursday, when the paper was put to bed, I would scramble over the wall to watch a demonic machine turn hot metal into slugs of type. When the press clattered into life, mayhem resulted, because it made the television pictures in all the nearby homes flicker and frizzle. But the Irvine Valley News press was a magical thing: words flowing on to lead, flowing on to type, flowing on to paper; an unmissable weekly record of births, marriages, deaths and crime and punishment and life all through the valley.
Even by the 1950s, it was clear a premonition of decline was setting in. Yet exploring the history of the valley now, going back through old photographs and descriptions of the first half of the last century, the valley never really had prosperity. Here was a valley that rose and fell with the business cycle; only this cycle seemed to have a buckled wheel and permanently flat tyre, a constant bias towards rundown. There were spikes of activity. But the period since the war has been a long, slow, remorseless exodus of businesses, activities and people, so that, with every new decade, that premonition of decline was made more real.
And it didn't seem to matter what happened in the outside world. Recessions or recoveries, consumer booms or busts, Labour eras or Tory ones, or devolution with all its promises. All have left my valley if anything poorer than before. And the biggest loss of all has been the valley's young people. As with so many areas of Scotland, they have upped and gone.
Nothing has made an impact, or stopped the loss and decline and decay. No lick of paint has touched that meaningless little milestone in the main street, just by Ronald the Bakers that proclaims "Edinburgh 54 miles". For what did Edinburgh ever mean to us? Very little, then. And little more now, I suspect. The valley was, and is even more, in a time warp, or in a place where time has ceased to matter.
The only times the valley makes the headlines is when it is hit by floods, which it often is. But few care to recall the flood of 1954 when a blocked stream above Newmilns suddenly burst and bore the entire contents of the town coup in a wall of mud through the Morton & Inglis lace factory and down through the main street. The avalanche had been preceded by a mass scuttling of rats, and for weeks afterwards hundreds of little wooden bobbins from the lace mill floated down the Irvine river: a livelihood, and an era, literally bobbing away.
The school, the newspaper, the railway station, the cinema and the big department store has all gone. So, too, are most of those cafés and shops that crowded many of the high streets in Scotland in that age before out-of-town stores and car-centred shopping. These are among the disappearances: the Clydesdale Bank branch, Pollock’s shoe shop, the Co-op hardware store, Skeoch's Garage, Greene's the printers and newsagents, Papini’s Italian ice-cream and sweetie shop, the Rex cinema, Cochrane's china and fancy gifts, Gilmour's Dairy and milk delivery, Oliver's the dentist, Johnston’s Grocers, Hamilton's fruit and vegetable shop, MK Stewart TV and electrical retailers and now, even the local ironmonger, the shop where everything could be found, and at times nothing because of its crowded shelves and crammed cupboards: the screws and nails and widgets and sprockets that kept every house in the valley together.
On the list rolls, like the fallen in some forgotten war, columns of casualties through time and circumstance. Cultural diversity is what is proclaimed now. But what happened to that rich and wonderful diversity that once we had?
I cannot say I enjoy going back. My visits are short. It is like listening to Gaelic music, evocatively pleasing for five minutes and terminally depressing after ten.
My valley, in truth, has not really vanished. Indeed, the reason for its sadness is that it has not greatly changed. There is much that has struggled on, through that unsparing degradation of the years, fighting an insistent loss of livelihood and purpose. My disappearing valley has clung on, like so much in Scotland has clung on, forever haunted by a hope that something would somehow turn up. It never did, of course.
Let's face it, we've all been there. Sitting wondering why on earth a network connection that, up until 5 minutes ago had been working just fine was now all but useless. Less tech savvy individuals may just shrug their shoulders and try again later but anybody else is left wondering why. As a reader of this blog post that fact automatically places you in the latter category. So, to the problem. Could it be that somebody else in the house has started a large download? If that's the case its the easiest to solve just by asking around but the plethora of devices that are in our houses today make the job a lot more complex. For me it was a long forgotten mobile phone owned by my son, left on charge under the bed and set to auto update its code and apps that proved the final straw and drove me to come up with a solution to this problem.
Lets look at the problem in the round first of all. Homes nowadays usually have a router which connects off to the cable company or to the telephone line. These routers allow all of the devices in the house to connect to the net whether on the wireless or the wired side of life. Its not uncommon for a home network to support 10 to 20 devices not all of which will be known about by every other member of the household. Any one of these devices has the potential to bring the network to its knees for hours at an end by starting a large download. Of course the possibility also exists that somebody else on the outside has gained access to your network and it's important that this is not overlooked.
The first step in getting a handle on the situation will be to take control of your home router and secure it so that it cannot be manipulated by anybody else. Most home routers nowadays have a small, cut-down, webserver running on board which allows a management user to access the management web page. By using this web page clients can change all of the settings on the device. The page is usually accessible by both the wired and the wireless network. If you are using a Windows machine the easiest way to establish a connection to this page is to do the following:
This post is not written to be a guide for any specific router so I will keep any further instructions necessarily wide in scope.
The following bullets will link to posts that will be made available soon which examine the different aspects of this problem. Check back soon to see them when they become available.
I hope this post has proved informative as an intro to controlling your home network. Check back soon for further updates.
Oil and gas operations are located in unforgiving environments, from the blistering cold of the arctic to the scorching heat of the deserts and the storming conditions out on the open sea. To sustain secure operating conditions in these remote areas, reliable communication is as vital to the end-user as the umbilical cord is to an unborn child.
Supervisory Control And Data Acquisition
Supervisory control and data acquisition (SCADA) is a unique aspect of oil, gas and power distribution operations in that it does not entail communication between people, but between machines, also known as machine–machine (M2M).
SCADA describes a computer based system that manages mission critical process applications on the ‘factory floor’. These applications are frequently critical for health, safety and the environment.
The term telemetry is often used in combination with SCADA. Telemetry describes the process of collating data and performing remotely controlled actions via a suitable transmission media. In the context of this article, the telemetry media is a satellite communications solution.
SCADA in Oil, Gas and Power Distribution Operations
SCADA is not limited to a particular aspect of these types of operations. In the Oil and Gas industry, SCADA applications can be found in upstream areas such as well monitoring, downstream in areas such as pipeline operations, in trade by managing the fiscal metering/custody transfer operations and logistics in applications such as inventory management of tank storage facilities. SCADA systems in the Power Distribution industry use RTUs and PLCs to perform the majority of on-site control. The RTU or PLC acquires the site data, which includes meter readings, pressure, voltage, or other equipment status, then performs local control and transfers the data to the central SCADA system. However, when comparing and specifying a solution for challenging SCADA environments, RTU and PLC-based systems are not equal.
PLC Systems are Sub-Optimal for Complex SCADA Systems
Originally designed to replace relay logic, PLCs acquire analog and/or digital data through input modules, and execute a program loop while scanning the inputs and taking actions based on these inputs. PLCs perform well in sequential logic control applications with high discrete I/O data counts, but suffer from overly specialized design, which results in limited CPU performance, inadequate communication flexibility, and lack of easy scalability when it comes to adding future requirements other than I/O.
With the rapid expansion of remote site monitoring and control, three critical industry business trends have recently come into focus:
• System performance and intelligence – Process automation improves efficiency, plant safety, and reduces labor costs. However, complex processes like AGA gas flow calculations and high-resolution event capture in electric utility applications require very high performance and system-level intelligence. The reality is that even high-performance PLCs cannot meet all these expectations.
• Communication flexibility – Redundant communication links between remote systems and the central SCADA application form the basis of a reliable, secure, and safe enterprise. Power routing automation in electric applications, water distribution, warning systems, and oil and gas processes all require unique communication mediums including slow dial-up phone lines, medium speed RF, and broadband wired/wireless IP.
• Configurability and reduced costs – Although process monitoring and control are well defined and understood within many industries, the quest for flexibility and reduced Total Cost of Ownership (TCO) remains challenging. In the past, proprietary PLC units customized with third party components filled the niche, but suffered from lack of configurability and higher maintenance costs than fully integrated units. Today, businesses look for complete modular off-the shelf systems that yield high configurability with a significant improvement in TCO.
At the technical level, several requirements currently influence the SCADA specification process:
• Local intelligence and processing – High processing throughput, 64 bit CPUs with expanded memory for user applications and logging with support for highly complex control routines.
• High-speed communication ports – Monitoring large numbers of events requires systems that support multiple RS232/485 connections running at 230/460 kb/s and multiple Ethernet ports with 10/100 Mb/s capability.
• High-density, fast, and highly accurate I/O modules Hardware that implements 12.5 kHz input counters with 16-bit analog inputs and 14-bit analog outputs for improved accuracy.
• Broadband wireless and wired IP communications. Recent innovations in IP devices demands reliable connectivity to local IEDs (Intelligent Electronic Devices) as well as emerging communication network standards.
• Strict adherence to open standard industry protocols including Modbus, DNP3, and DF-1 on serial and TCP/IP ports
• Robust protocols for support of mixed communication environments.
• Protection of critical infrastructure – Enhanced security such as password-protected programming, over the air encryption, authentication, and IP firewall capability.
Selecting a Satellite Communication Solution – Factors to Consider
When selecting a satellite communications solution, there are numerous factors that must be considered. Enterprise applications like e-mail, Internet access, telephony, videoconferencing, etc. frequently tie into public communications infrastructure. Due to security and reliability considerations it is considered best practice to isolate mission critical SCADA communications infrastructure from public networks.
The Rustyice solution is a dedicated satellite communications network solution tailored for the SCADA applications environment. By virtue of system design, our solution offers greater security against hacker attacks and virus infestation which mainly target computers that are connected to the Internet and are running office applications.
Due to the critical nature of most SCADA operations, a reliable communication solution is of utmost importance. The satellite communications industry is mature with a proven track record. Satellite transponder availability is typically in the 99.99 percentile range, a number far superior to that of terrestrial networks. To build on this strength, our solution utilises a miniature satellite hub that is deployed at the end-users SCADA control centre. Data to/from the remote terminal units (RTUs) are piped directly into the SCADA system. There is no vulnerable terrestrial back-haul from a communication service providers facility, which can cause the entire network to crash if cut during public works, i.e. digging.
To increase the reliability of the hub, it is frequently deployed in a redundant/load sharing configuration. This ensures that the hub is available more than 100% of the time, making it far from the weakest link in the communication chain.
Types of Connectivity
Contrary to enterprise-related communications which take place randomly, SCADA communication is quite predictable. It is a continuous process, where the SCADA application polls the RTUs at regular intervals. The outgoing poll request is a short datagram (packet) containing as few as 10 bytes. The returned data from the RTUs are also in a datagram format with the message size being from 10 bytes to 250 bytes. One could easily assume that a satellite solution based upon dial-up connectivity such as Inmarsat, Iridium or Globalstar would be ideal for this application environment. Since SCADA is not just data collection, but also entails control (which at times can be of an emergency nature), you simply cannot wait for the system to encounter a busy connection. What is needed is a system that provides an ‘always on’ type of connection, commonly referred to as leased line connectivity.
A Rustyice solution supports both circuit switched (leased line and multi drop) and packet switched (TCP/IP and X.25) applications concurrently.