Nuclear build announcement ‘within two months’

first_img14 April 2014 The Department of Energy will make a definite announcement on South Africa’s nuclear build future within the next two months, Energy Minister Ben Martins told a business briefing in Pretoria on Monday. South Africa’s Integrated Resources Plan (IRP) for 2010 to 2030, a 20-year projection on electricity supply and demand, currently envisages 9 600 MW of additional nuclear capacity by 2030. The department is busy reviewing the plan. Koeberg remains South Africa’s only nuclear station. Martins said that, towards the end of last year, an inter-departmental team tasked with preparing for South Africa’s nuclear build programme had conducted study visits to a number of countries with expertise in the nuclear field, including the United States, Japan and Russia. The team comprises representatives from the Departments of Energy, Public Enterprises, National Treasury and other departments. The team had prepared a report which would be given to an inter-departmental committee chaired by President Jacob Zuma. “A definite announcement in regard to progress should be made in about two months’ time, maximum,” Martins said. The deputy director-general responsible for policy in the Department of Energy, Ompie Aphane, said that nuclear was at the core of the department’s planning process. “If one looks at the period between 2020 and 2030, one of the biggest challenges that we face is that we have to decommission some of the coal-fired power stations because … they are all coming to the end of [their life cycle] at the same time. “That’s where the 9600 MW of nuclear is predicated to be,” Aphane said. “We need to replace the coal in line with our objectives, in response to issues such as climate change.” On how a nuclear build would be funded, Aphane said the department had commissioned an independent study to look at various funding options and sources. Martins said the countries visited by the task team had all expressed their readiness to partner with South Africa on the skills needed for the nuclear build. “The study visits that we conducted we were in touch with a number of countries and tertiary institutions. They are all willing and ready to partner with South Africa. “In terms of skills training, there’s commitment,” Martins said. “What we’ve emphasised to all role players is that we are interested in localisation to ensure that a programme of that nature will result in the requisite industrialisation in South Africa. “What can be produced in South Africa should be produced in South Africa, and we’ve made emphasis on the aspect of skills training. There will be new disciplines and job opportunities.” Source: SAnews.gov.zalast_img read more

5 Graph Databases to Consider

first_imgTags:#Architecture#cloud Cloud Hosting for WordPress: Why Everyone is Mo… klint finley Related Posts Serverless Backups: Viable Data Protection for … Top Reasons to Go With Managed WordPress Hosting Of the major categories of NoSQL databases – document-oriented databases, key-value stores and graph databases – we’ve given the least attention to graph databases on this blog. That’s a shame, because as many have pointed out it may become the most significant category.Graph databases apply graph theory to the storage of information about the relationships between entries. The relationships between people in social networks is the most obvious example. The relationships between items and attributes in recommendation engines is another. Yes, it has been noted by many that it’s ironic that relational databases aren’t good for storing relationship data. Adam Wiggins from Heroku has a lucid explanation of why that is here. Short version: among other things, relationship queries in RDBSes can be complex, slow and unpredictable. Since graph databases are designed for this sort of thing, the queries are more reliable.Google has its own graph computing system called Pregel (you can find the paper on the subject here), but there are several commercial and open source graph databases available. Let’s look at a few.Neo4jThis is one of the most popular databases in the category, and one of the only open source options. It’s the product of the company Neo Technologies, which recently moved the community edition of Neo4j from the AGPL license to the GPL license (see our coverage here). However, its enterprise edition is still proprietary AGPL. Neo4j is ACID compliant. It’s Java based but has bindings for other languages, including Ruby and Python.Neo Technologies cites several customers, though none of them are household names.Here’s a fun illustration of how relationship data in graph databases works, from an InfoQ article by Neo Technologies COO Peter Neubauer: How Intelligent Data Addresses the Chasm in Cloud FlockDBFlockDB was created by Twitter for relationship related analytics. Twitter’s Kevin Weil talked about the creation of the database, along with Twitter’s use of other NoSQL databses, at Strange Loop last year. You can find our coverage here.There is no stable release of FlockDB, and there’s some controversy as to whether it can be truly referred to as a graph database. In a DevWebPro article Michael Marr wrote:This lead MyNoSQL blogger Alex Popescu to write: “Without traversals it is only a persisted graph. But not a graph database.”The biggest difference between FlockDB and other graph databases like Neo4j and OrientDB is graph traversal. Twitter’s model has no need for traversing the social graph. Instead, Twitter is only concerned about the direct edges (relationships) on a given node (account). For example, Twitter doesn’t want to know who follows a person you follow. Instead, it is only interested in the people you follow. By trimming off graph traversal functions, FlockDB is able to allocate resources elsewhere.However, because it’s in use at one of the largest sites in the world, and because it may be simpler than other graph DBs, it’s worth a look.AllegroGraphAllegroGraph is a graph database built around the W3C spec for the Resource Description Framework. It’s designed for handling Linked Data and the Semantic Web, subjects we’ve written about often. It supports SPARQL, RDFS++, and Prolog.AllegroGraph is a proprietary product of Franz Inc., which markets a number of Semantic Web products – including its flagship set of LISP-based development tools. The company claims Pfizer, Ford, Kodak, NASA and the Department of Defense among its AllegroGraph customers.GraphDBGraphDB is graph database built in .NET by the German company sones. sones was founded in 2007 and received a new round of funding earlier this year, said to be a “couple million” Euros. The community edition is available under an APL 2 license, while the enterprise edition is commercial and proprietary. It’s available as a cloud-service through Amazon S3 or Microsoft Azure.InfiniteGraphInfiniteGraph is a proprietary graph database from Objectivity, the company behind the object database of the same name. Its goal is to create a graph database with “virtually unlimited scalability.”According to Gavin Clarke at The Register: “InfiniteGraph map is already being used by the CIA and Department of Defense running on top of the existing Objectivity/DB database and analysis engine.”OthersThere are many more graph databases, including OrientDB, InfoGrid and HypergraphDB. Ravel is working on an open source implementation of Pregel. Microsoft is getting into the game with the Microsoft Reasearch project Trinity.You can find more by looking at the Wikipedia entry for graph databases or NoSQLpedia.last_img read more

How To Combine Board and Batten Siding With Exterior Rigid Foam?

first_imgClaire Remsberg, an architect in the Rocky Mountain region, is working on a house where the main goals are to limit thermal bridging through the 2×6 wood frame and to beef up wall R-values. Plans call for vertical wood siding over a layer of rigid foam insulation.If that sounds more or less straightforward, the details are not. The contractor has limited experience working with rigid exterior insulation, Remsberg writes, and has concerns that installing siding directly over the foam may not be a great idea.Remsberg has explored a number of wall assemblies but admits that “nothing is looking quite right yet.” Her request for ideas on how to detail the wall is the subject of this week’s Q&A spotlight.Create an air space with strappingWood, fiber-cement or plywood siding should not be installed directly over the foam, writes senior editor Martin Holladay.“I wouldn’t hesitate to install 1×3 or 2×4 horizontal strapping, 24 inches on center, on top of the foam,” Holladay recommends. “Screw the strapping through the foam to the studs.”Architect Jesse Thompson seconds Holladay’s idea of applying the siding over horizontal strapping. Reverse board-and-batten, he adds, is another option. Putting on battens first, followed by the wider siding, makes a natural rain screen and gives a “crisp, sharp profile that is very distinctive.” RELATED MULTIMEDIA GREEN PRODUCT GUIDE CONSTRUCTION DETAILS RELATED ARTICLES Rigid Foam ChoicesVapor Retarders and Vapor BarriersForget About Vapor Diffusion, Stop Air Leaks!Air Leaks Waste Energy and Rot Houses Reclaimed-Wood SidingDensArmor PlusExterior Finish & TrimMichael Chandler, a builder and GBA advisor, has used scraps of 1/2-in. oriented strand board as furring to separate a rigid foam exterior and vertical siding. The strips of OSB are held in place with galvanized ring shank nails rather than screws. The siding is nailed through the OSB and foam into 1-in. planking that is attached to the framing, creating a SIP-like foam sandwich.But, Chandler says, be sure to add an insect barrier at the bottom of the wall. To that end, his company bought a large sheet metal brake so the crew can produce custom Z-flashing.Yes, but foam has risks, tooAttaching the siding to the building is but one issue.According to some (but by no means all) builders, rigid foam insulation on the exterior of the building (“outsulation,” as it’s called) carries with it an increased risk of water damage inside exterior walls, because the foam can trap moisture and prevent walls from drying to the exterior.Remsberg herself points up this issue: “On moisture management, my concern is that the outsulation does not prohibit the wall from breathing properly,” she says. “The choice of insulation type is also a topic which I welcome comments on. As this is mostly a heating climate, I do not want to create a vapor barrier in the outer portion of the wall.”Michael Maines points out that with 5 1/2 in. of dense-pack cellulose in the walls (R-21), in a typical winter temperature scenario, condensation is possible if the foam were less than 1 in. thick.“Your variables may be different, but you have to be careful with exterior foam in a cold climate,” Maines says. “Done right, it’s great. Done wrong, even the best rain-screen detail won’t do anything to save you from moisture problems. If you’re even considering foam I hope you don’t have a poly vapor barrier on the inside of the wall assembly.”Robert Riversong adds that dense-pack cellulose is a good idea when wall assemblies include rigid foam on the exterior. Cellulose, he says, “has far better moisture absorption and release properties than almost any other insulation (except straw or end-grain wood). But, again, the caveat is: no interior vapor barrier (1 perm OK).”Or, get rid of the rain screenThe idea behind a rain-screen is to provide an air space behind the siding so it can dry out. Maines suggests a product made by Cor-a-Vent will help encourage air flow and promote drying. But in this case, the climate where Remsberg is building is so arid that 1×3 battens nailed through foam into the studs would be just fine.“I agree with Michael that, in your arid climate, a rain-screen is not necessary, provided the siding is back-sealed and there is proper integration between [the water-resistive barrier] and flashings,” Riversong adds.“But your builder is correct that siding problems were not uncommon when applied directly over rigid foam board. So some spacing, with provisions for good nailing (1½ in. into framing for smooth nails or 1¼ in. into framing for ring shank),” he adds. “Be aware that excessive nailing through exterior foam reduces its insulating capacity, particularly at the studs that it’s supposed to be thermally breaking.”Tom Schirber would go further. He recommends something called the Exterior Thermal Moisture Management System (ETMMS), which he says is an adaption of the Canadian PERSIST approach that does not include a rain-screen.Schirber writes that for the best results, ETMMS incorporates “drainage plane/vapor barrier/air barrier all in one product on the building structure (outside sheathing) and on the foundation.”His choice is Perm-A-Barrier by Grace Construction Products. This barrier is followed by rigid foam strapping and then siding.There’s no need, he says, for housewrap beneath the siding or an interior vapor retarder. The technique was addressed by Joseph Lstiburek in an article called The Perfect Wall .It works on any structure and in any climate and is so good, Schirber adds, “it is a bit silly to use the conventional methods.”Nothing, even the Perfect Wall, is ever perfectYes, Riversong adds, we know know that convection, not vapor diffusion, accounts for most of the movement of water vapor through the walls. Hence the gradual abandonment of interior poly vapor barriers in favor of effective air barriers.According to Riversong, the problem with systems that slow or eliminate outward drying is that they can keep the building envelope warm enough to encourage mold and decay, and bulk moisture that finds a way in has no way of getting out.“Science and technology has yet to become ‘smart’ enough to outwit the gremlins of Mother Nature,” he says. “When we (re)learn that She is still far more powerful than we, we will return to some of those ‘common wisdom’ approaches to working WITH the forces of nature rather than thinking we can outwit them with our cleverness (what the Greeks understood as fatal hubris).”We asked GBA advisor Peter Yost for an expert opinion:Building Science Corp.’s general rule of thumb is that a vented rain-screen isn’t necessary in climates with less than 20 inches of rain annually. One caveat is for sites subject to wind-driven rain and snow. That ups the ante and means less than 20 inches of rain or snow annually might still warrant the vented or ventilated space.A caveat for board-and-batten claddingsThe vertical wood-to-wood contact in the direction of water flow means more moisture being held at the wood overlaps than for most other wood claddings. So, a ventilated air space will help keep the board and battens from differentially drying, shrinking, and cracking. It’s sort of the 150+ year approach versus the 50+ year approach.And if your project is in a wildfire zone, use heavy-duty screening to keep embers and burning brands from getting behind the wall cladding and into the vented space.On securing the spacers to the framing and the cladding to the spacers:The building code says that wood cladding fasteners must penetrate the studs, generally an inch of penetration (they weren’t really thinking of our high performance exterior insulation systems apparently). BSC is engaged in research to show that connecting the furring to the studs and the cladding to the furring introduces no shear issues. It is unlikely that your building inspector will fret over this, but BSC work to date has shown NO shift across the rigid insulation with any cladding systems with furring strips creating a vented, drained space.Getting ventilation (not venting) with horizontal furring strips:if you have openings top and bottom with vertical siding and horizontal furring, how do you get air flow or ventilation behind the cladding? It is not clear that honeycombed materials such as Cor-a-vent or Battensplus have the holding power for cladding fasteners equivalent to wood furring strips. Either sufficiently fasten the cladding through to framing as spacing allows or work with the manufacturer of the honeycombed spacer to test and verify holding power with appropriate fasteners.Using exterior foam insulation:We only put insulation in cavities because the space is there and it is the least expensive location; it is not the best location. Exterior insulation “warms” the framing cavity and helps to prevent interstitial condensation. Use the “dewpoint” test to determine what thicknesses of exterior and cavity insulation in combination keep you out of trouble for your climate, your assemblies, and your interior set points (temperature and relative humidity).And build every home with a decent hygrometer for your clients — they need to know both temperature and relative humidity for the best “comfort” level for your structure, as well as their own comfort. Details for the Energy Star Checklist Plan detail: Vertical board siding over 1-1/2in. rigid insulationPlan detail: Vertical board siding over 1in. rigid insulation Plan detail: Vertical board siding over 3/4in. rigid insulationInsulating behind tub with rigid foamAir sealing behind tub PODCAST: Air Barriers vs. Vapor BarriersPODCAST: The Perfect Wall, Roof, and SlabDeep Energy Retrofit: Focus on the Envelope VIDEO: Superinsulating a Home with Rigid FoamVIDEO: Vented Rain Screen Assemblies How to Install Rigid Foam Insulation Outside a Houselast_img read more

Macandili on facing powerhouse teams in AVC: ‘This is anybody’s game’

first_imgSEA Games in Calabarzon safe, secure – Solcom chief Photo from asianvolleyball.netBIÑAN, Laguna—–When the Philippines and Vietnam, which are miles away from each other in the FIVB standings, it was the smallest Filipino on the court who made one of the biggest impacts.Dawn Macandili, a reserve player for the Philippines’ Southeast Asian Games squad, pestered the region’s reigning silver medalists and helped the Philippines upset Vietnam, 27-25. 26-24, 17-25, 25-23 in the AVC Asian Senior Women’s Volleyball ChampionshipADVERTISEMENT Don’t miss out on the latest news and information. LOOK: Venues for 2019 SEA Games View comments PH women’s volleyball team motivated to deliver in front of hometown crowd PLAY LIST 02:25PH women’s volleyball team motivated to deliver in front of hometown crowd03:07PH billiards team upbeat about gold medal chances in SEA Games02:42PH underwater hockey team aims to make waves in SEA Games01:37Protesters burn down Iran consulate in Najaf01:47Panelo casts doubts on Robredo’s drug war ‘discoveries’01:29Police teams find crossbows, bows in HK university01:35Panelo suggests discounted SEA Games tickets for students02:49Robredo: True leaders perform well despite having ‘uninspiring’ boss UPLB exempted from SEA Games class suspension Catriona Gray spends Thanksgiving by preparing meals for people with illnesses MOST READ The 5-foot libero was aware of how ahead the Vietnamese are in the rankings but she knew that momentum can change easily by just a few plays on the floor.READ: Philippines stuns Vietnam in AVC FEATURED STORIESSPORTSWATCH: Drones light up sky in final leg of SEA Games torch runSPORTSSEA Games: Philippines picks up 1st win in men’s water poloSPORTSMalditas save PH from shutout“I thought at first that ‘oh no we’re facing one of the top teams in the world,’” said Macandili in Filipino. “But when we started playing, I said to myself ‘wait this is volleyball we’re talking about,’ this is anybody’s game.”And even though Alyssa Valdez and Jaja Santiago brought the offensive pain with 20 and 19 points, respectively, it was Macandili who frustrated the 44th-ranked team in the world in the defensive end.center_img Macandili registered 19 excellent digs, 13 more than Vietnam’s Dinh Thi Thuy, and 12 excellent receptions to help the Philippines, 79th-ranked team in the world.READ: Valdez, Santiago praise Maraño in PH win over Vietnam And there were plays that weren’t recorded in the stat sheet, for instance Macandili’s several heart-stopping receptions on Tran Thi Thanh Thuy’s booming spikes.“For the past two games, I was still finding my groove,” said Macandili who shares libero duties with Denden Lazaro. “So I think I finally got my rhythm against Vietnam.”ADVERTISEMENT Man sworn in as lawyer by judge who sentenced him to prison as a teen 20 years ago WATCH: Streetboys show off slick dance moves in Vhong Navarro’s wedding LATEST STORIES Brace for potentially devastating typhoon approaching PH – NDRRMC Flags of SEA Games countries raised at Athletes Village Read Next Canete makes good on promise to help save PH pololast_img read more

Petron repulses Sta. Lucia

first_imgStalzer accounted for 28 kills and an ace for 29 points, while Hurley wreaked havoc with 25 kills, a block and an ace for 27 points as they conspired for more than half of Petron’s 70-point production off spikes.Mika Reyes was the lone local who finished in double figures for Petron with 11 points laced with three blocks.FEATURED STORIESSPORTSWATCH: Drones light up sky in final leg of SEA Games torch runSPORTSSEA Games: Philippines picks up 1st win in men’s water poloSPORTSMalditas save PH from shutoutPetron coach Shaq Delos Santos said that while credit should be given to their imports, it was still a team effort as his wards maintained their composure to weather a furious rally from the Lady Realtors, who welcomed their new import in Bohdana Anisova of Ukraine.“Sta. Lucia played really well. It was obvious that they really wanted to bounce back,” said Delos Santos, who steered the Blaze Spikers to the All-Filipino Conference crown early this year. QC cops nab robbery gang leader, cohort Don’t miss out on the latest news and information. Kammuri turning to super typhoon less likely but possible — Pagasa Lindsay Stalzer of Petron is block by Shirley Salamagos and Rebecca Rivera of Sta. Lucia. INQUIRER PHOTO/AUGUST DELA CRUZPetron woke up from a third-set slumber to pull off a 27-25, 25-20, 22-25, 25-14 victory over Sta. Lucia Realty in the Chooks to Go-Philippine Superliga (PSL) Grand Prix Thursday night at Filoil Flying V Centre in San Juan.American imports Lindsay Stalzer and Hillary Hurley took up the cudgels for at the attack zone once more to lead the Blaze Spikers to their second straight victory.ADVERTISEMENT Protesters burn down Iran consulate in Najaf PLAY LIST 01:37Protesters burn down Iran consulate in Najaf01:47Panelo casts doubts on Robredo’s drug war ‘discoveries’01:29Police teams find crossbows, bows in HK university01:35Panelo suggests discounted SEA Games tickets for students02:49Robredo: True leaders perform well despite having ‘uninspiring’ boss02:42PH underwater hockey team aims to make waves in SEA Games LATEST STORIES Typhoon Kammuri accelerates, gains strength en route to PH “We survived even if our game is not what we wanted it to be. Good thing we controlled it and we were able to pull off the victory.”Delos Santos noted that their sluggish reception and poor services as well as the Lady Realtors’ solid blocking hounded them in the third set, allowing Sta. Lucia to stretch the match to fourth set.“We struggled in our services and receives in the third set,” he said. “Their blocking was also solid and quality, especially their imports. We really had a hard time matching their intensity.”ADVERTISEMENT Read Nextcenter_img Stronger peso trims PH debt value to P7.9 trillion CPP denies ‘Ka Diego’ arrest caused ‘mass panic’ among S. Tagalog NPA Brace for potentially devastating typhoon approaching PH – NDRRMC Japan ex-PM Nakasone who boosted ties with US dies at 101 MOST READ Solid Bright outing lifts Maroons; DOMC stuns Knights Kin of Misamis Oriental hero cop to get death benefits, award — PNP View commentslast_img read more

a month agoLampard insists Chelsea not getting overconfident

first_imgLampard insists Chelsea not getting overconfidentby Freddie Taylora month agoSend to a friendShare the loveFrank Lampard has warned his Chelsea about getting ahead of themselves. The Blues are sixth after Saturday’s first home win of the season against Brighton.”I don’t want to get ahead of ourselves because what we have shown so far this season is moments and patches of games with good stuff where we want to get to, and other moments where we haven’t done so,” he said. “So I think to get overconfident at this point would be wrong on my part and the team’s part.”With the young players, and some have been making their full debuts for Chelsea this season, we must give them time and we will get better. I think it was the movement of the ball. We are working a lot on trying to keep switching the play and in moving it from side to side.”Sometimes we forget that and we forget ourselves that we slow it down too much. It is something I don’t like to see. I don’t think it helps the crowd or the atmosphere when you slow it down and go back to the goalkeeper and across sideways when you can play forward.”At times when we were at our best, we play forward, we played punchier, we were sharper and that’s what made us create so many chances. I was pleased and that’s why I wanted to be really positive at half-time because it is easy to lose patience or to stop doing the right things because it is not coming off.”We were actually creating. The point was to keep doing the right things, to keep moving it quickly and believe it was going to come and it did. Every game is different, you have to consider that, but at our best I want us to have a feeling that we are a team that I like watching myself – a team that are sharp and have energy because we have that quality. It is about trying to put that all together.” About the authorFreddie TaylorShare the loveHave your saylast_img read more

Video: Draymond Green Says If He Could Hit Someone With A Snowball, It’d Be A Michigan Fan

first_imgDraymond Green being interviewed.draymond green snowball michigan fanThursday, Nike released a new two-minute commercial dedicated to “Snow Days” which features over a dozen of the brand’s professional athletes lining up against each other on the football field. One of those athletes is former Michigan State star Draymond Green, who now plays for the Golden State Warriors.Nike also released a “Behind The Scenes” look at the commercial, and asked a few of the athletes who they’d hit with a snowball, given the chance. Green’s answer? A University of Michigan fan. Check it out:This isn’t the first time Green has expressed his dislike for the Wolverines. If you’re interested, here’s the actual commercial – it’s actually very cool.last_img