Wooden roofs Marger Krumm EH1 Roofs · Shingle roof · Shake roof · Chip roof · Board roof Shingle roof · It comes from Estonia 19.century · Made by softwood (one shingle is 62 cm) · The roof comprises two layers of shingle 2 different installation Fish-tail Perpendicular to the eaves · Lasts 60-80 years if you maintanance the roof. Shake roof · Very old history · Made by pine, spruce and aspen. · Size: 80mm broad, 3mm thick from the top and 15 mm thick from the bottom, the lenght is different. · Different styles ( sharp, rounded and slanting ends ) · Lasts 30 years. · The slope of the roof must be at least 25° Chip roof · Its comes from in Estonia 18. century · Mades by spruce and aspen · Sizes: 500mm tall, 5-7 mm thick and width is variable
was not particularly good, he asked his secretary to revise it before she typed it up. Text 2 is the report that was finally sent to the Transport Manager. Read both of the reports and see if you can identify: the changes that the secretary made the reasons for making these changes the effect of these changes TO: Transport Manager FROM: Transport Supervisor (Field Services) SUBJECT: Services Provided by Autocheck Maintenance Company DATE: 6.4.01 Ref your phone call about the maintanance of field vehicles. As I said on the phone, in the past couple of months I've noticed that the standard of service which this company provides has got worse and worse and that this has caused us lots of difficult problems. Our own maintanance people have done some checks of their own recently and have found that AMC's works have really gone down. We had two trucks doing nothing since five days because the Autocheck people
valideerimine – kas toodetud süsteem on see, mida klient soovis? evolutsioon – tarkvarasüsteemi muutmine vastavalt kasutajate muutuvatele nõudmistele Tarkvaraprotsesside liigid: plaanipõhine – kõik tegevused on planeeritud ja edu tagab kriteeriumide järgminie agiilne – planeerimine toimub sammude kaupa töö käigus Kose (waterfall) mudel: requirements -> design -> implementation -> verification -> maintanance. Tuleneb ehitusest. Kose mudeli puudused: nõuded fikseeritud iga protsess peab olema lõpetatud enne kui teine algab protsess algab algpunktist, kus arendaja ja klient ei saa üksteisest tegelikult aru Kose mudeli eelised: parem koordineerida The Manifesto for Agile Software Development Agiilsed metodoloogiad: XP, Scrum, Kanban (vt loeng 3) LOENG 2 - Kuldar Nõue on dokumenteeritud vajadus, mida süsteem peab rahuldama.
Types of maintenance - Maintenance to repair software faults - Maintenance to adapt software to a different operating environment - Maintenance to add to or modify the system's functionality Maintenance costs - Usually greater than development costs - Affected by both technical and non-technical factors. - Increases as software is maintained. Maintenance corrupts the software structure so makes further maintenance more difficult. - Ageing software can have high support costs Maintanance cost factors Team stability - if the staff stays the same, then the cost reduces Contractual responsibility - The developers of a system may have no contractual responsibility for maintenance so there is no incentive to design for future change. Staff skills staff knowledge and experience Program age and structure 16.loeng Tarkvaraprotsessi organisatsioonist Suurem jagu juhtidest teavad, kuidas tööd tehakse, kuid ei tea, kuidas tööd juhtida
A 315 kW oyster system operates in Scotland since 2009. The plan is to build up a 2.3 MW system with three linked systems. The deployment started in 2011. Video clip: Oyster wave energy converter Source: https://www.youtube.com/watch?v=v8NuWdp8LvM Power buoys Power buoys are a modular system with good economies of scale. Converting mechanical energy by vertical movement into electrical energy. A small module with low maintanance costs. Livetime is expected to be thirty years and more. The movement of power buoys caused by waves looks like the movement of valves in a motor block. 23 Video clip: Power buoys Source: https://www.youtube.com/watch?v=EsRzTl6Q24E Summary of wave energy Wave energy converters can be realized as floating devices (offshore) or fixid devices (coast region)
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