Tuesday, 28 July 2009

18 cracks found in Delhi Metro pillars

From The Economic Times

NEW DELHI: Structural audits on piers under construction for Delhi Metro Rail Corporation (DMRC) tracks have revealed 18 cracks on pillars. The
company, however, Monday said that there was "no need for panic".

The DMRC has begun to re-check all the piers of the metro's 190 km-long phase II, after

the July 12 accident due to a crack killed six people. Independent consultant Shirish Patel and Associates were appointed to conduct the structural audits.

DMRC Managing Director E. Sreedharan had asked metro engineers to inspect all the piers built on respective lines for any cracks.

"They found hairline cracks on eight piers of the Central Secretariat to Gurgaon corridor, two piers of the Noida corridor and eight piers of the Central Secretariat to Badarpur corridor. All appear to be superficial in nature," DMRC spokesperson Anuj Dayal said.

Dayal also informed that Sreedharan has asked the consultant to reassess the design of the 18 points in detail in addition to the overall checking of phase-II structures.

"DMRC will carry out further corrective action if required and take necessary remedial measures after Shirish Patel and Associates have examined these locations," Dayal added.

On July 12, an elevated stretch of the metro rail under construction in south Delhi collapsed with tonnes of concrete and steel, killing six and injuring 15 others.

Cracks noticed on pillars there were speculated by workers as the reason for the accident. However investigations so far have pointed to a design or construction material inefficiency.

While residents in Noida have expressed fear that DMRC is in a hurry to conduct trial runs on the nearly finished stretch, the company said that surface cracks in concrete structures are not uncommon and trials are likely to continue along with the investigation.

"There is no need for panic in the matter. In fact, Indian standard codes for design of reinforced concrete structures allows and permits tension cracks within limits," a DMRC statement said.

To further investigation, ultrasonic and rebound hammer testing will carried out to check the integrity and quality of the concrete. In addition,

"DMRC will get load testing done wherever considered necessary," Dayal said.

"Similar testing was done during phase I of the construction also as a precautionary measure whenever required."

Monday, 27 July 2009

Randomizing Input Data for Visual Studio Load Tests

From Ajax World Magazine

While preparing for my presentation Load and Performance Testing: How to do Transactional Root-Cause Analysis with Visual Studio Team System for Testers that I gave at the Boston .NET User Group on May 13th I came across certain load-testing topics. One was: How to randomize Input Data.

If you go with Visual Studio you can code your web tests in any .NET Language giving you the freedom to create random data by using e.g.: System.Random. If you however want to use the “nicer” UI Driven Web Test Development (that’s how I call it) – you are limited in your options. You add web requests – you can parameterize input values by using Context Parameters with hard coded values, you can reuse values extracted from a previous request or you can use data from an external data source like a database, CSV or XML file.

Basic random numbers for VSTS Web Tests

One thing that I missed was the ability to use basic random values, e.g.: a random number from 1 to 5 that would be used for a quantity field of a web form or a random username with the pattern “testuserX” where X is in the range of my test user accounts.

In order to do that there only seems to be one way – implementing a WebTest or WebTestRequest Plugin that generates random data and makes it available as Context Parameter to the test.

Friday, 24 July 2009

National swine flu help service goes live

From The Guardian

Will the new freephone and website service buckle under the weight of growing panic about the pandemic? We check out its online advice and the public's reaction

3.03pm: The national swine flu help service finally goes live at 3pm today, with millions expected to call the telephone helpline - 0800 1513 100 - and website. Until half an hour ago the Department of Health press office said it was unable to state at what time the service would actually launch, amid reports of serious IT problems, which is unlikely to reassure the government's critics that it has the situation in hand.

3.04pm: Just minutes after the website is launched, it is apparently already overwhelmed with requests for information. Visitors clicking through to the section for patients in England get this message: "The service is currently very busy and cannot deal with your request at this time."

3.27pm: Nearly half an hour after its launch and there is still no access to the service. The website does prompt you for the following info: date of birth; current symptoms; medical history; NHS number or, if you are a foreign visitor, passport number or European Identity Card number; postcode. The Department of Health press release says if you are deemed to have swine flu symptoms you'll be given a unique access number and told where your nearest antiviral collection point is. Then you need to get your "flu friend" to go and pick up the drugs. They must show their own ID as well as yours.

3.29pm: The helpline offers callers two options - general information on swine flu, directing you to call 0800 1513513, and an assessment of your symptoms. There was only a short wait to get through to a member of staff.

3.44pm: Twitterers complain they can't access the website. djwhisky writes: "Pandemic Flu site overloaded already https://www.pandemicflu.direct.gov.uk/ - would've thought they'd do some load testing b4 launch #fail."

Thursday, 23 July 2009

Industry View: Green Has to Mean Better

From SMT

It is easy to point a finger at certain substances and say they are bad and should be eliminated. Sometimes, however, even more difficult than eliminating a substance is finding a replacement for it. Care must be taken to avoid replacing a “bad” substance with another that causes even more problems than its predecessor.

We must ensure that changes are science-based. When there is technical and/or ecological evidence of how the industry can better protect the environment, we should take the proactive approach of carefully evaluating alternative technologies to determine trade-offs between product functionality, environmental impact, reliability, safety, and cost. Stakeholders must be involved in this process.

It is difficult to affect industry-wide elimination of specific materials without deadlines of pending legislation. The infrastructure changes required are especially challenging, given that most companies are not vertically integrated. Widespread conversion requires consensus on solutions and requirements across the supply chain.

iNEMI has organized initiatives to help build such consensus. The first focuses on PVC alternatives, while the second addresses issues related to elimination of HFRs.

The PVC Alternatives Project is evaluating alternatives for PVC power cables to determine trade-offs between product functionality, environmental impact, reliability, safety, and cost. Participating members will conduct cradle-to-grave environmental lifecycle assessments (LCAs) comparing PVC and PVC-free compounds for U.S.-based detachable desktop power cord applications (cable, connectors, wire). They also will compare equivalent functional units that meet UL requirements and conduct performance testing to gain a better understanding of the electrical, mechanical, and safety aspects of PVC-free alternatives.

Many of iNEMI’s OEM members and their suppliers are assessing the feasibility of a broad conversion to HFR-free PCB materials. Significant technical questions remain. What electrical properties are needed to meet high-speed signaling requirements? With many HFR-free materials showing higher stiffness, what mechanical properties are needed to ensure system reliability isn’t degraded? Can design modifications reduce sensitivity to electrical and material properties?

Tuesday, 21 July 2009

BreakingPoint First to Deliver Dual Stack IPv4/IPv6 Testing Capabilities and Support for Current IPv6 Standards

From Earth Times

AUSTIN, TX -- 07/21/09 -- The current blend of IPv4 and IPv6 network traffic can have serious repercussions on network device and application server performance and security. Yanick Pouffary, technology director for the North American IPv6 Task Force and an HP Distinguished Technologist, recently told CIO Magazine that, "At least half of U.S. CIOs have IPv6 on their networks that they don't know about, but the hackers do. You can't ignore IPv6. You need to take the minimum steps to secure your perimeter. You need firewalls that understand IPv4 and IPv6. You need network management tools that understand IPv4 and IPv6."(1)

Only through testing IPv6-aware firewalls, intrusion detection systems and other network devices using both IPv4 and the most current IPv6 traffic, can you certify device resiliency and meet mandates for IPv6 compliance.

News Overview

-- BreakingPoint today became the only testing tools provider with dual stack IPv4/IPv6 testing using the most current IPv6 standards and support for both application and security traffic as of July 2009.

-- BreakingPoint is now the exclusive provider of resiliency testing using current IPv6 traffic to simulate true global network traffic. BreakingPoint has the unique ability to generate blended stateful application traffic mixed with live security attacks at line-rate speeds and high session counts, delivered from the same address space.

-- BreakingPoint dual stack testing is the industry's most comprehensive and up to date IPv6 capable testing allowing Network Equipment Manufacturers (NEMs), service providers and application server suppliers to:

-- Simulate IPv6 traffic through each BreakingPoint testing component
including Client Simulator for load testing IPv6 capable application
-- Enhance Layer 4-7 performance with more than 75 blended IPv6 native
application protocols.
-- Authenticate security with more than 4,200 IPv6 capable security
-- Ensure compliance with the latest IPv6 standards as of July 2009.
-- Validate real-world performance by blending IPv4 and IPv6 traffic.
-- Reduce time-to-test through importing of IPv6 traffic captures.

Wednesday, 15 July 2009

Self-sufficient robot

From The Engineer

Robotic Technology of Potomac, Maryland, is developing an autonomous robot that is able to perform long-range, long-endurance military missions without the need for manual or conventional refuelling.

The patent-pending robot can do so because it can find, ingest and extract energy from biomass in the environment, as well as use conventional and alternative fuels such as petrol, diesel, propane and solar when suitable.

The source of power for the so-called Energetically Autonomous Tactical Robot, or EATR, is a hybrid external combustion engine system developed by Cyclone Power Technology.

Unlike internal combustion engines, the Cyclone engine uses an external combustion chamber to heat a separate working fluid (deionized water) which expands to create mechanical energy.

This is integrated with a biomass combustion chamber to provide heat energy for the engine that then provides electric power for a rechargeable battery pack, which powers sensors, processors and controls, and a robotic arm/end effector.

The data from the optical, ladar, infrared and acoustic sensors is processed by a control system to provide the situational awareness such that the robot is able to identify and locate suitable biomass.

The control system also controls the movement and operation of the robotic arm/end effector to manipulate the biomass and ingest it into the combustion chamber as well as control the operation of a hybrid external combustion engine to provide suitable power.

So far in the development cycle, engineers at Cyclone Power Technologies have coupled their proprietary steam generator with the compact biomass furnace and produced sufficient steam to power the robot's six-cylinder, 16HP Waste Heat Engine (WHE).

With this stage of development complete, Cyclone will now commence system performance testing with the goal of delivering a complete beta system to Robotic Technology in the next 90 days.

Tuesday, 14 July 2009

Two sides of the ‘Big Blue lemon’ row

From Manila Standard Today

It’s easy to get worked up over the raging war between the Government Service Insurance System and the Philippine office of software giant International Business Machines.

You can take the side of the state pension fund and lament that the crash of the Integrated Loans, membership, Acquired Assets and Account Management System has caused inordinate delays in the processing of loans, benefits and first-time pension claims of lowly government employees who comprise its membership. You can play up emotions and say that while there are millions of pesos involved in the deal and in the lawsuits that have sprouted as a result of the row, the fund members only need a few thousands to pay their children’s tuition, settle hospital bills, buy some medicine, or fix the house.

On the other hand, you can imagine being on the side of the IBM, a company that has built its reputation for decades, doing business in numerous countries all over the world. IBM has been operating in the Philippines for more than 70 years already. Certainly, accusations of supplying “defective” database software to one of its longtime clients, a state agency at that, dents this prized reputation. This, too, should not be taken lightly.


n a press statement released earlier this month, IBM Philippines quoted Questronix which said that while the system had been operating successfully since May 26 (after IBM had provided the so-called build to address the problem), the overall stability of the system “will continue to be in question until the GSIS takes steps to address the many other issues impacting the system...these include instituting backup and recovery procedures, conducting appropriate performance testing and tuning in accordance with industry practice and having certified personnel manage complex systems on a regular basis.”