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High and lows of Lhasa

Traffic belches black fumes against the brilliant blue sky; truckloads of Chinese soldiers rumble through the streets. Add to this theme park Tibet: plaster cranes and brass yaks stand at the Beijing Street roundabout. A Tibetan woman in a stetson is digging a trench at the side of the road. She waves and blows a huge pink bubble of gum.

Suddenly, visible through all the tat and satellite dishes, rises the vast airy bulk of the Potala Palace, its walls a dramatic pattern of whitewash and red ochre and capped with gleaming gold stupas.

The palace was once the Dalai Lama’s winter residence and seat of the Tibetan government, now it’s a lonely symbol of Tibetan culture at the Chinese end of town, hurriedly rescued from plunder and neglect under communist rule.

The ancient capital Lhasa ("Holy Land" in Tibetan) is one of the world’s highest cities, at 3658m above sea level, and dates back 1400 years. In 1949, newly communist China declared it part of the motherland and began a period of occupation. Its Han Chinese migrants outnumber the locals.

Chinese and Western tourism is booming, with more than a million visitors expected this year; add to this the recently opened rail link to Tibet, the Pan Himalayan Beijing Lhasa railway.

Best site: The imposing Potala Palace, whose image graces the back of China’s 50 yuan banknotes, dominates the city. I stand in front of it and gaze up, trying to ignore the renovations, which include a Tiananmen style square to commemorate Tibet’s "liberation".

It’s a steep climb to the palace. The air is thin and I huff and puff, stopping for photographs and swigs of Coca Cola. Inside the palace, I am borne along with a crowd of assorted tour groups, in and out of dimly lit prayer halls painted in shades of vermilion and saffron. There are gilded statues of Buddha and grotesque deities; showcases of figures in gold, copper and brass, some encrusted with moonstones, emeralds and rubies, and racks of ancient scrolls, thangkas and carpets.

I linger at the Dalai Lama’s
cheap ray bans former living quarters, a group of tiny brightly coloured rooms decorated with paintings and carpets, until a guard moves me along. The air is thick with dust and mildew and the odour of yak butter lamps. Shy monks play with kittens tethered on strings. Outside on the roof terraces, I am dazzled by the light and the view of towering mountains across the city.

Best lunch: In Lhasa’s old quarter, the Dunya Restaurant at the Yak Hotel offers a mix of wholesome Western, Chinese and Tibetan dishes, prepared under the watchful eye of a
fake ray bans Dutch co manager. A yak burger with salad and fries seems merited after the morning’s exertions. Iron rich yak is delicious, with little fat. And then there’s the secret house speciality, a pot of "altitude relax tea". A yak burger costs RMB35 ($5.70).

Best spiritual tourism: Resisting the urge to take to my bed (that thin air again), I head around the corner to the heart of the old quarter, a traditional ghetto which hints at what Lhasa once was. It’s a popular haven for Westerners attempting to embrace what is left of Tibetan culture here, and as a result its bustling streets are jammed with backpacker hostels, bars, internet cafes and gift shops, and its roads with bicycle rickshaws, minivans (their horns blaring), and LandCruisers heading out to Mount Kailash or the Nepalese border, beyond Everest Base Camp.

At its heart is Barkhor Square and the Jokhang, Tibet’s most sacred temple. I join a stream of pilgrims, prayer wheels in hand, as they shuffle along its walls, circumambulating a clockwise route while intoning mantras. Other devotees rise, then prostrate themselves in front of the temple’s 7th century portals. For a small fee I join the stream doing a circuit inside the temple. Pillaged by China’s Red Guards during the Cultural Revolution, the Jokhang has been restored.
replica ray bans Monks sit at small desks chanting sutras beneath an army of security cameras.

Best shopping: Hundreds of stalls line Barkhor Square, selling every possible Tibetan artefact, from prayer wheels to jewel encrusted yak skulls, from bear and tiger paws to felt boots and yak felt stetsons worn by locals to ward off the fierce mountain sun. I haggle for fun with some women, their hair piled high, threaded with turquoise and corals, their cheeks burnt black by the sun. Skinny children in rags are in hot pursuit hoping for some small change. Many of the nearby shops are Chinese run but I am in search of what remains of old Tibet so I wander the narrow back streets, children in tow, and find Tibetan workrooms selling traditional costumes and fur trimmed hats and a Muslim quarter where caged birds chirrup to the gentle hum of sewing machines.

Best irony: Designer monks in Ray Bans and Timberland boots chatting on mobile phones stand out in sharp contrast to their impoverished looking colleagues, their pallid complexions the result of years of deprivation and appalling monastery food; these are the ones doing the praying. The monks allowed to live in monasteries are limited in number and are kept under police surveillance. It is said spies are installed in their ranks.

Best side trip: The Ganden Monastery, about 40km from Lhasa, is famous as a site of traditional sky burials in which bodies are dissected and left on stone altars for eagles to consume, releasing the spirit for the next incarnation. The monastery was bombed to the ground when the 1959 uprising was suppressed, but has been rebuilt (with an adjoining police station). After a hair raising drive in a tinny van, zig zagging up winding narrow roads to an altitude of 1370m, I walk the low "kora" (the pilgrim’s circuit) around the monastery, at the back of which is a rubbish dump but there are breathtaking views of the Kyi chu Valley.

Bones are tied to tree branches, alongside paper money; tattered prayer flags flutter from saplings (it is said each time the wind blows, a prayer is released into the air). Cheerful pilgrims cart hessian sacks of mulberry leaves up to the burial site: when they are burned, carrion birds are attracted by the smoke.

Yaks loll amiably amid groups of picnicking locals on a hillside covered with wildflowers. A boy in a sheepskin coat a chuba calls me to his workshop to buy a woodcut.

Best dinner: The Snow Leopard Hotel, off Barkhor Square, is deservedly popular for its food, attracting foreigners and Tibetans. Ravenous after a day in the mountain air, I gorge myself on mushrooms grilled with wild ginseng and vegetable mo mos (dumplings). There is also local beer or the potent chang, a traditional barley alcohol.

Back at the Yak Hotel, cocooned against the traffic and the nightlife karaoke bars and brothels and lulled by the distant strains of Hindi pop music, I down a half carafe of red and take a pot of altitude relax tea to bed.

Best preparation: To ward off altitude sickness, ask your doctor to prescribe Diamox tablets and start taking them
discount ray bans according to instructions before arriving in Lhasa. The ultra violet light is strong, so sunglasses, hats, sunscreen and lip balm are essential. Summer days are hot, but the weather can change quickly and evenings are chilly. Bring a fleece or a shawl and small gifts such as pens to give to the many children you will encounter.Articles Connexes:

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resilience to natural hazards

Scotland’s resilience capabilities will be boosted by a new national centre in Dumfries that will help improve responses to issues such as flooding.

The new centre, situated at Crichton Campus, will also act as a national hub; coordinating work to understand how best communities and local emergency responders can prepare for an anticipated increase in natural hazard events as a result of climate change.

Further improvement in Scotland’s resilience to natural hazards
oakley sunglasses replica such as severe weather and flooding, augmenting existing systems and complement work of partners such as Adaptation ScotlandBuilding community resilience across Scotland, learning from
fake oakleys existing good practice across the South of ScotlandImprovement in the protection and resilience of Scotland’s communities to floodingDevelopment of Scotland’s resilience research capability Provision of resilience training and development opportunities and ensuring the identification and sharing of good practiceImprovement in local multi agency resilience arrangements and evaluation of the benefits to responders of investment in flood warning technology in the region

Partners in this ambitious and wide ranging project include Dumfries and Galloway Council, Met Office, SEPA and emergency response organisations such as Police Scotland and the Scottish Fire and Rescue Service as well as the Scottish Funding Council and the Crichton Trust.

The Scottish Funding Council (SFC) is leading work to harness the research capacity on resilience across Scotland. They will support development of a new Research Centre of Excellence for Scotland by leading a workshop involving academia, the Met Office, industry and other stakeholders. A panel will assess a proposal from a consortium prior to any Funding Council award.

SFC has also agreed in principle to fund two additional posts based at Crichton to help support the Research Centre of Excellence.

The announcement was made on a visit to Crichton Campus by Environment and Climate Change Minister, Paul Wheelhouse, who said:

"Scotland’s resilience arrangements are already widely recognised as robust but we must not rest on our laurels and this new centre will ensure we remain forward thinking in how we deal with natural hazards. As the recent severe weather, in the North of Scotland, has shown we cannot be complacent and residents of Dumfries and Galloway themselves understand only too well the impact of such events, having experienced horrendous conditions over the festive period. This centre will provide a focus of intelligence and skills and networking of good practice that will fulfil a national role to support emergency planning and response activities across all of Scotland. This new centre will help build on these experiences and share existing knowledge with partners and communities throughout Scotland.

"We know that human activity is changing the global climate and extreme weather events are more common than they were previously. Scotland will not be immune and we are already seeing evidence of Scotland’s climate changing. With extreme weather events predicted to become more frequent, it is of the utmost importance that we are as prepared as possible to respond when these hit which is why we have put well developed resilience arrangements in place to help minimise their impacts.

"The facilities at Crichton Campus are first class and the proximity of the Campus to other institutions, including the Crichton Carbon Centre, the water rescue expertise of the local fire and rescue service and a very experienced team at Dumfries
cheap wholesale oakley sunglasses and Galloway Council provides an excellent opportunity for resilience partners, academia and the Scottish Government to work collaboratively on climate and flooding related resilience issues and to optimise multi agency working.

"This approach sits well within the context of Dumfries and Galloway having already strong local resilience arrangements in place, with an emphasis on an integrated and multi agency approach, which offers the prospect of
cheap wholesale oakleys the region presenting a good opportunity to provide practical training opportunities and to identify lessons with relevance for all Scotland. The Centre will be well placed to also evaluate the benefits to responders of the roll out of further flood warning technology, with roll out of the coastal flood warning system for the Solway scheduled for 2015."

Dumfries and Galloway Council Leader, Ronnie Nicholson, said:

"I welcome this announcement from the Minister about the new Scottish Resilience Centre. Within
oakleys sunglasses this new resilience centre will be experts on community resilience, research into emergency planning and severe weather. It will also house quality research facilities.

"Dumfries and Galloway has been recognised nationally as having some of the best emergency planning arrangements in Britain, and have also been routinely recognised as having an innovative approach in the field. Our team have been asked to provide advice to other regions and agencies who have experienced emergency situations disruptive events including the recent flooding in Somerset. Basing the new Scottish Resilience Centre here is recognition that we have the skills and expertise here in our region."

David Pirie, Executive Director at SEPA, said:

"The
fake cheap oakleys founding of this national centre of excellence recognises the increasingly important role that community resilience will play in understanding, preparing for, and reacting to severe weather events in Scotland.
fake oakleys cheap This is a positive step towards co ordinating a wide range of quality information, knowledge and understanding across many agencies and partnerships who work to keep Scotland running during adverse events.

"SEPA regards this new centre as complementary to the work it undertakes and furthers the Team Scotland approach which sees
cheap oakleys Scotland’s public bodies working together to deliver efficient and effective services."Articles Connexes:

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Determining and Managing Critical Load and Heat Load in the Data Center

Sizing the electrical service for a data center or data room requires an understanding of the amount of electricity required by the cooling system, the UPS system, and the critical IT loads.  The power requirements of these elements may vary greatly from each other, but can be precisely estimated using simple rules once the power requirements of the planned IT load are determined.  Apart from estimating the size of the electrical service, these elements can be used to estimate the power output capacity of a standby generator system, if one is required for the data center loads.

A proper planning exercise in developing a data center, from a single rack sized environment to a full scale data center begins with determining the size of the critical load that must be served and protected.  The critical load is all of the IT hardware components that make up the IT business architecture:  servers, routers, computers, storage devices, telecommunications equipment, etc., as well as the security systems, fire and monitoring systems that protect them.  The process of determining critical load begins with a list of all such devices, with their nameplate power rating, their voltage requirements, and whether they are single phase or three phase devices.  The nameplate information must then be adjusted to reflect the true anticipated load.

Determining the critical heat load starts with the identification of the equipment to be deployed within the space. However, this is only part of the entire heat load of the environment. Additionally, the lighting, people, and heat conducted from the surrounding spaces will also contribute to the overall heat load. As a very general principal, estimate no less than 1-ton (12,000 BTU/Hr / 3,516 watts) per 400 square-feet of IT equipment floor space.

The equipment heat load can be obtained by identifying the current requirements for each piece of equipment and multiplying it by the operating voltage (for all single phase equipment). The number derived is the maximum draw or nameplate rating of the equipment. In reality, the equipment will only draw between 40% and 60% of its nameplate rating in a steady-state operating condition. For this reason, solely utilizing the nameplate rating will yield an over inflated load requirement. Designing the cooling system to these parameters will be cost prohibitive. An effort is underway for manufacturers to provide typical load rating of all pieces of equipment to simplify power and cooling design.

The equipment that will occupy a space has not been determined prior to the commencement of cooling systems design. In this case, the experience of the designer is vital. PTS maintains an expert knowledge of the typical load profile for various application and equipment deployments. For this reason, as well as consideration of future growth factors it may be easier to define the load in terms of an anticipated standard for a given area. The old standard used to be a watts-per-square foot definition.

The nameplate power requirements are the worst-case power consumption numbers required by Underwriter’s Laboratory and in almost all cases, are well above the expected operating power level.  Studies conducted by reputable consulting engineering firms and power supply manufacturers indicate that the nameplate rating of most IT devices is well in excess of the actual running load by a factor of at least 33%.  The U.S. National Electrical Code (NEC) and similar worldwide regulatory bodies also recognize this fact and allow electrical system planners to add up nameplate data for expected loads and multiply by a diversity factor, anticipating that not all devices are running at full load 100% of the time. Calculators gather power consumption data from a wide range of manufactures and further specify various equipment configurations.

Determining the electrical power required to support and cool the critical load within the data center is essential in planning for the development of a facility that will meet the end user’s availability expectations.  This will help specify the size of the Data center physical infrastructure components that will achieve the availability determined by the needs assessment.  Once the sizing determination is complete, conceptual and detailed planning can go forward with the assistance of a competent DCPI systems supplier or, in the case of larger scale data centers, a consulting engineer.

Data Center Talk updates its resources every day. Visit us to know of the latest technology and standards from the data center world.
Please leave your views and comments on DCT Forum

Data Center Network Architectures and Research Problems

Data centers have progressively become an essential part of Internet services and networking.  This has resulted in setting key demands for the current data center network architecture. Demands like support for cloud computing, competence, scalability and efficiency results in appealing confronts from network architecture’s perspective. Like other sciences, research in data centers is essential to keep the center running smoothly.  Research projects must be paid keen attention for the purpose of quick improvement. Agility is the key. The more agile a data-center network is, the more efficient the deployment of money and resources is. During the research process there is a whole gamut of challenges. The major ones include – formulating ideas, setting out detailed designs to code up and implement, bringing together all the equipment to run the experiments and make them real.

There are several research problems or hitches in data center. Some of them are enlisted below:

Cost:

It is essential to understand the cost structure in a data center. There are various components in a data center which eat up the costs. Some components include – Servers, Infrastructure, Electrical utility costs and lastly the Network (Links, transit, equipment). Power associated expenses are similar to the networks. IT devices consume 59% of each watt brought, 8% to delivery losses and 33% for cooling purposes. Cooling costs could be brought down by permitting the data centers to run hotter, which may need the network to be more flexible in nature. Important fraction of network related costs is spent on networking equipment. Other fraction of the total costs of the network recount to wide area networking that includes traffic to end users, traffic between data centers and regional services.

Cloud Servicing:

Data centers supporting cloud services vary from distinctive enterprise data centers. Cloud service data centers need automation, unlike enterprise data center where automation is inequitable. Cloud service data centers support large economies of scale. Scaling out dispense workload to small cost hardware, in contrast to updating lofty cost hardware. The enterprise networking architectures were initially developed for much smaller data centers, in contrast to the ones active today. The limitations of the conventional architecture have resulted in quite a few workarounds and squares for the protocols to keep up with the new anxieties on data centers.

Unnecessary subscription of resource and fragmentation:

Unnecessary subscription ratio means the ratio of subscriptions to what is offered restricted server-to-server capacity limits the data center capacity and fragments the server pool. This is because idle resources cannot be allotted where they it is required. To evade this trouble all applications should be placed carefully also taking the impact of the traffic into consideration.  However, in practice this is challenging. Partial server-to-server capacity guides to designers clustering the servers around one another in the ladder, because the distance in the ladder influences the performance and cost of the communication

Reliability, utilization and fault tolerance:

Data centers undergo pitiable reliability and utilization. In case some component of the data center is unsuccessful, there must be some means to keep the data center working. Typically in data centers, counterpart elements exist. When an access router fails for example the counterpart handles the load. However, this leads to elements use only 50% of greatest capacity. Multiple paths are not successfully used in current data center network capacity. A vast majority of data centers use TCP (Transmission Control Protocol) for communication. This communication usually takes place among the nodes and Incast. This occurs in many to single environment, which is dissimilar from the usual assumptions TCP based its design. In simple and more understandable words, TCP is unsuitable for a special data center environment with low latencies and high bandwidths thus limiting the optimum use of all capacity. In casting a receiver, requests data from multiple senders. Upon receiving the demand, the senders start sending out data to the original receiver simultaneously with the other senders. Nevertheless, in the middle of the connection from sender to receiver, is a bottleneck link resulting in a fall down in the receiver receiving the data. The result is network jamming from using the same bottleneck link. Advancing and increasing the buffer sizes of switches and routers hinders congestion, but in high latency and bandwidth data center environment, the buffers can still fill up in a short phase. In addition, large buffer switches and routers are costly.

Data Center Talk updates its resources every day. Visit us to know of the latest technology and standards from the data center world.
Please leave your views and comments on DCT Forum

Rackwise Manages all Aspects of Your Data Center

Rackwise is a multi- layered software product that provides a series of solutions for managing multiple dimensions of a company’s IT infrastructure and data center(s). Using Rackwise allows companies to optimize their use of components such as power, cooling, space, servers, networks, cables, etc. Improved management of these resources delivers an improved Return on Investment from one of the most critical and most expensive corporate expenditures – your IT Infrastructure.

Rackwise delivers four solution areas –

  • Data Center Essentials
  • Data Center Optimization
  • Data Center Intelligence
  • Data Center Business

Website: http://www.rackwise.com/

Address:
Rackwise
101 California St. Suite 2450
San Francisco, CA 94111

Lee Technologies

Lee Technologies Inc. is a leading provider of complete data center solutions and resources that allow customers to focus on their core business. Founded in 1983, Lee Technologies designs, builds, operates, monitors and maintains business-critical facilities for some of the most data-reliant private and public sector organizations in the world, including Coca-Cola, JP Morgan, Northrop Grumman, the U.S. Department of Defense, Time Warner, Verizon and many others.

Since that time, Lee Technologies has grown into a total lifecycle solutions provider of business-critical data center infrastructure. We design, build, operate, monitor and maintain business-critical data centers for some of the most demanding Fortune 1000 companies and government agencies in the world. With more than 25 years of industry experience, our depth and breadth of expertise at solving business-critical data center challenges is unparalleled.

WebSite: http://www.leetechnologies.com

Solutions Information
T 800.955.4533
Corporate Information
T 703.968.0300
National Locations
T 800.955.4533

Data Center Services by PTS

In today’s highly competitive, warp-speed changing, climate where businesses can’t stop and downtime is measured in profits lost, PTS offers solutions for protection against some of the leading causes of critical systems downtime, hardware damage, data loss and decreased employee productivity. Highly respected in our industry, PTS sets the standard for continuous availability solutions for facilities to data centers to desktop systems.

Founded in 1998, PTS is a data center consulting firm and turnkey solutions provider, offering a broad range of project experience, specializing in designing data centers, computer rooms and technical spaces that integrate, best-of-breed, critical infrastructure technologies and result in continuously available, scalable, redundant, fault-tolerant, manageable and maintainable mission critical environments.

PTS corporate headquarters in Franklin Lakes, New Jersey, and our office in Orange County, California, PTS works to fulfill our mission of creating satisfied customers by emphasizing pre-design & planning services to provide the optimal solution to meet our clients needs and resulting in an early & accurate alignment between scope, schedule and budge.

WebSite: http://www.ptsdcs.com
TS Data Center Solutions, Inc. 568 Commerce Street, Franklin Lakes, NJ 07417
Toll Free: 1.866.PTS.DCS1 Tel: 201.337.3833 Fax: 201.337.4722 Email: info at ptsdcs.com