56 research outputs found
Identification of Fatigue and Resonance Frequency Influencing Parameters of an Offshore Wind Turbine via Data Analysis of Real Measurements
No full textTechnology improvements and growing maturity of the offshore wind industry have resulted in significant cost reductions and rise in demand. More can be achieved by focusing on improving the understanding of key design areas of an offshore wind turbine (OWT). Since fatigue is one of the main design criteria for offshore structures and little is known about fatigue cumulative development in time under operating conditions, it formed the basis of this thesis. However, fatigue is a complex phenomenon that is dependent on numerous interlinked parameters, such as damping, loading type, and stiffness of support structure (SUS). For the purpose, data analysis was performed on measurements which were gathered over a period of four years from a monopile-supported OWT site. The measurement data included information about the environmental and operational conditions of the OWT; and strain, acceleration and inclinometer readings from its SUS. Use of different data acquisition systems during the measurement campaign inherently required significant efforts to synchronise and preprocess raw data to appropriate state for data analysis. Time-dependent lag was identified via computation of cross-correlation sequences between data segment pairings, and the lag was successfully corrected. With the use of a standardized rainflow cycle counting algorithm, strain-derived moment time series were converted to constant amplitude events, which could be used to derive damage equivalent bending moments, M-N curves and fatigue damage accumulation frequency spectra. Short-term damage equivalent bending moment (STEL) was revealed to have a linear dependency with turbulence intensity when the OWT was in the run-up operational state. Additionally, the fatigue damage was demonstrated to be higher for downstream turbines due to wake effects. Also, fatigue life consumption of OWT SUS increases above rated wind speed conditions despite decrease in load magnitude due to increase in SUS response frequency. The latter was confirmed with fatigue damage accumulation frequency spectra, which revealed that the importance of high frequency band (1 – 5 Hz) increases in conjunction with wind speed at above rated wind speed conditions. However, most of the overall fatigue damage is accumulated at the low frequency band, which associated with wind and wave loading, first SUS bending modes, 1P and 3P rotor harmonics.Civil Engineering | Structural Engineering | Structural Mechanic
Sisekommunikatsioon ettevõttes Euronics
No full textTitle of this baccalaureate thesis is „Internal communication in Euronics”. The main
goal of this research is to analyze the situation of organizational communication in
Euronics Eesti and its sub-organizations. Through analyzing the opinions for
information flow and usage of communication channels.
To give answers to research questions, author used two different methods. First the
author conducted two interviews about organizational communication in Euronics
Eesti in December 2009 and compared the results with a survey, which was
conducted in March 2010.
The result showed, that the general opinion of the communication flow was quite
positive, but there are still some factors that restrain effective communication inside
the organization. Mainly the problem is that different departments and workers on
different hierarchy levels do not communicate enough.
Communication channels that workers mainly use are e-mail, telephone and direct
communication. The intranet does not find much usage, even though workers think
that it might make interaction with other members of the organization a lot easier. Inorder
to do that intranet in this organization needs to be formatted and new
applications to be added.
The result of this analyze showed, that the internal communication in Euronics Eesti
is improving, but still needs attention and needs to be reorganized. Through adding
the new formatted intranet into the list of communication channels.http://tartu.ester.ee/record=b2510650~S1*es
Forest road building guidlines
No full textKäesolevas töös uuriti, millised peavad olema olulised põhimõtted ja ehituslikud osad, mida metsateede ehitamisel kasutada tuleb. Eeldati, et metsateede ehitamise juures tuleb kasutada fikseeritud põhimõtteid, mis tagavad teede kvaliteedi ning kasutuskindluse. Metsateede ehitamise nõuete ühtse juhendi saamiseks, millest saaks metsateede ehitaja lähtuda, pani autor kokku kõik olulisemad teede ehitamise etappide protsessid ning nõuded. Töös sisuliste osade ülesehituse põhjal koostas autor juhendi, kuidas metsateed peavad olema ehitatud, et need vastaks kõikidele erinevatele nõuetele. Samal ajal anti spetsiifilisi soovitusi, mida saaks otseselt aluseks võtta metsateede ehitamise protsessis. Selleks töötas läbi autor erinevaid teaduskirjanduse allikaid, juhendmaterjale ning õigusakte. Töö ülesehitus võimaldab teede ehitajal leida vastused küsimustele, millises järjekorras ehitustöid teostada tuleb ning millistele nõuetega erinevates etappidel arvestama peab. Keskkonnanõuetele vastamisel peab arvestama, et ei tekitataks ohtu ei keskkonnale ega töid teostavaile inimestele. Teed rajades tuleb tee kõrvale teha vajalike meetrite ulatuses raie ja eemaldada kännud, jäätmete ladustamisel peab igale jäätmeliigile olema oma koht hoidmiseks, mis arvestab ka ilmastikku ja väldib lekkimist loodusesse. Sama peab arvestama kütuste hoiustamisel ja tankimisel, et vältida lekkimist ja õnnetusi. Kõik kasutatavad masinad ning töövahendid peavad vastama nõuetele ja läbima tehnohoolduse. Õnnetuse juhtumisel tuleb koheselt teavita vastavaid asutusi tulekahjust, keskkonnareostusest või isegi lõhkeaine leidmisest. Muldkeha ettevalmistamise etapis tagatakse teele etteantud vajalikud laiused, mille tulemusena tee maa-ala puhastatakse puittaimestikust ja muudest takistustest. Märgistada tuleb puud ja põõsad, mis jäävad alles ja on orientiiriks langetajale. Tee koridori tegemine annab võimaluse tee ehitamiseks, kasutamiseks ja hooldamiseks. Autor on töös detailselt välja toonud, kuidas pinnast ette valmistada, kuivendussüsteem ehitada ja kraave kaevata. Tee kõrval olevate kraavide abil vee eemale juhtimine aitab säilita tee muldkeha tugevust ja selleks, et hoida püsivat vee liikumist on vaja paigaldada truubid, et vesi jõuaks valgalasse. Lisatud on nõuded truupidele, mis on vaja kasutada, kui teed ristuvad ojade või jõgedega. Muldkeha ehitamise etapis teeb autor ettepaneku, kuidas pehme pinnase ehk turba peale ehitada, mis sõltub täielikult geosünteetide toetusest, kuivõrd iga turvas on erinev ja selle peale ehitamine sõltub erinevatest faktoritest ja nõuab erinevaid uuringuid ning vaatlusi. Geotekstiilide ja –võrkude ettevalmistustööde osas kirjeldatakse, milliseid tegevusi läbi tuleb viia ning paigaldusnõuete osas on autor välja toonud spetsiifilised tegevused, mida järgida. Kasutades õigeid ehitusvõtteid võimaldab valmiv tee kanda väga suuri koormusi. Kuna turbane ala ei ole tasane, siis järgmiste kihtide ehitamisega ei tohi alustada liiga kiiresti võimaldamaks turbal kasvatada tugevust. Metsateede kohta on alates 2014. a kehtestatud keskkonnaministri määrusega uued nõuded, mille järgi teed on jaotatud kattega teeks, kruusateeks ja pinnasteeks. Määruse lisas tuuakse metsatee seisundinõuded metsatee järkude lõikes. Metsatee järgu määrab tee valdaja teelõikude kaupa ja metsatee järk märgitakse riiklikus teeregistris. Seepärast on töö viimases osas pööratud tähelepanu ka metsatee katendi ehitamise nõuetele. Enne teekatendi materjali kohalevedu ja laotamist muldele, peab mulde pealispind olema profileeritud, antud vastav põikkalle ja hästi tihendatud. Autor, olles läbitöötanud ja järjestanud metsateede ehitamise etapid ning nõuded, annab hinnangu nagu eeldas hüpotees, et metsateede ehitamisel tuleb lähtuda fikseeritud põhimõtetest, mis tagavad teede kvaliteedi ning kasutuskindluse. Hetke olukorra parandamiseks on iga ehitusetapi kohta töös esitatud kindlad nõuded, mida töötajad arvestada saavad ning seega on oluline, et juhendmaterjal praktikas kasutust leiaks.Guidelines for forest road building – this work displays how to build forest roads. The work was written in meaning to help workman, who should know exactly how he should operate. Work’s purpose was to identify all the important principles and structural components, which are used in construction of forest roads, in order to write out in detail different parts of process. Work’s hypothesis is that the construction of forest roads should be used at a fixed principles that ensure the quality of roads and the use of certainty. Forest roads are very important subject in Estonia because state is giving more and more money to build up forest economy. In Estonia we did not have certain guidelines to build forest roads until 2012. In this work author has covered the topics of environment, embankment preparations, road construction and how the forest roads are divided. In each section there is given an overview what points out what are the first things to do during building a forest road. In the first part the author gives an overview and compliance of the environmental requirements that should be mandatory for employees. Most important among them are the requirements for fuel, fueling, waste and logging operations, and there’s also need to take into account the heritage monuments and objects. There is a need to pay attention to the conditions of the machinery and equipment, safety and emergencies. The second part of the work is related to the preparation of the embankment. There is an overview how to prepare for construction work from the stump grubbing-up and prepare the ground up digging ditches principles, drainage construction and installation of culverts. The chapter outlined the requirements and working methods of road construction that workers should take into account when preparing the construction of the embankment. The third part gives an overview of the construction of the embankment. Since the forest roads are based on the soft soil, as a rule, the soft soil or peat depends entirely upon the construction of geosynthetics support. The process includes the construction of the road to make geogrids, but using the right techniques will allow the construction to be completed in the way to carry very heavy loads. The author gives an overview of what geotextiles and network installation requirements must be monitored, and how the work will be the installation of the geogrid. The fourth section examines the types and stages of forest roads, and pay attention to forest road pavement construction requirements. Based on the information the author has prepared a guide on how forest roads should be built to meet all these different requirements. At the same time there are given specific recommendations that can be directly used on a forest road building process. To this end, the author worked through a variety of scientific literature, instructional materials, and instruments. Guidelines allow road builders to find the answers to the questions in order to know how to build forest roads and what requirements must be taken into account during the different stages
The customer satisfaction study on the example of ITÜ Rebella
No full textBakalaureusetöö
Maamajandusliku ettevõtluse ja finantsjuhtimise õppekavalToimival ettevõttel peab olema klient, kes neilt ostaks. Kui klient on ettevõttega rahul, sooritab ta
enda ostud ka tulevikus seal. Rahulolev klient on lojaalne ja soovitab ettevõtet ka teistele inimestele.
Inseneri- ja tehnikaühistus(ITÜ) Rebella ei ole 26 tegutsemisaasta jooksul kordagi läbi viidud
kliendirahulolu uuringut. Bakalaureusetöö eesmärk on välja tuua kliendirahulolu pakkuvad tegurid
ja vastavalt klientide vajadustele teha ettevõttele ITÜ Rebella ettepanekuid kliendirahulolu
tõstmiseks. Töös analüüsitakse kvantitatiivselt klientide vastuseid, mis on saadud kliendiküsitluse
tulemusena. Küsitlus oli kättesaadav kahe nädala jooksul Google Drive keskkonnas. Tulemusi
hinnates tõi töö autor välja, et suur osa ITÜ Rebella kliente on väga pikaajalised püsikliendid.
Vastuseid analüüsides ilmnes, et kliendid ei ole paljude aspektidega ettevõtte ITÜ Rebella juures
rahul. Töö autor küsitles 14 erinevat ITÜ Rebellaga seonduvat tegurit. Kliendid olid rahul vaid
neljaga. Enamasti tekitas rahulolu toodete ja teenuste hind ning ITÜ Rebella suhtumine klienti.
Rahulolematust tekitasid 10 tegurit. Rahulolematud oldi näiteks toodete ja teenuste kvaliteediga,
liiga pika tarneaja pärast, info vähese kättesaadavuse pärast, aeglase teeninduse pärast. Autori arvates
peaks ITÜ Rebella enda toodete ja teenuste kvaliteeti tõstma. Samuti tuleks ettevõttel parandada
info kättesaamise võimalusi. Võimaluse korral võiks ettevõte üritada ka tarneaega lühendada,
et kliendid saaksid kauba kiiremini kätte.
Sarnane uuring tuleks ettevõttes ITÜ Rebella mõne aja jooksul uuesti teha. Siis saab võrrelda, kas
ettevõtte klientide rahulolu on tõusnud või langenud.An operating company must have a customer who would buy from them. If the customer is satisfied
with the company he will continue to make his purchase there also in the future. A fulfilled
customer is loyal and recommends the company to others. During the 26 years of operation Engineering
cooperative Rebella (ITÜ Rebella) has never conducted a customer satisfaction survey.
The aim of the bachelor thesis is to highlight the customers satisfaction factors and, according to
the needs of clients, to make ITÜ Rebella's proposals for increasing customer satisfaction. The
study analyzes quantitatively the customer responses obtained as a result of a customer survey.
The survey was available for two weeks in the Google Drive website. When assessing the results,
the author of the work pointed out that a large part of ITÜ Rebella's clients are very long-term
customers. Analyzing the responses showed that the customers are not satisfied with many aspects
of ITÜ Rebella. The author questioned customers with 14 different ITÜ Rebellas related factors.
Customers were satisfied with only four. Particularly satisfied with the price of products and services
along with ITÜ Rebella's attitude towards the customer. Discontent was offered by 10 factors.
Dissatisfied, for example, with the quality of products and services, too long delivery times,
low availability of information, and slow service. According to the author, ITÜ Rebella should
raise the quality of its products and services. The company should also improve the availability of
information. If possible, the company could also try shortening the delivery time so that customers
can get the goods faster.
A similar study should be carried out at ITÜ Rebella after some time. Then it is possible to compare
whether the company's customer satisfaction has risen or dropped
Machinery oprimization for 200-Hectares Grain Growing Farm
No full textLõputöö eesmärgiks oli optimeerida 200-hektarilist teraviljakasvatustalu masinaparki ning
leida lahendusi tööde lihtsustamiseks ja masinate efektiivsemaks kasutamiseks.
Töös antakse ülevaade teraviljakasvatuse ajaloost Eestis ning vaadeldakse tänapäeval
kasutusel olevat põllumajandustehnikat Pargi Talu OÜ näitel. Autor iseloomustab näitetalu
muldade tüüpe ja pakub lahendusi, kuidas hoida muldasid õhulise ja viljakana.
Töös prognoositakse eelnevate aastate saagikuse põhjal käesoleva hooaja teraviljasaaki ning
leitakse oodatav tulu, et näha kas on võimalik raha eraldada ka investeeringutele,
tööjõukuludele ning muudele kuludele, mis võivad esineda.
Töös koostatud koormusgraafikud aitasidleida optimeerimist vajavaid seadmeid ning töö
tulemusena otsustati hetkel kasutusel olev 3 meetrine külvik vahetada 4 meetrise vastu ning
olemasoleva mürgipritsi 15 meetrine poom vahetada 24 meetrise vastu.Selliste töölaiuse
puhul klapivad ka uus külvik ning pritsimise tehnorajad.
Hooajalisteks töödeks on kasulik palgata tööjõudu, et töö saaks toimuda vahetustes. See
omakorda võimaldaks kasutada päeva efektiivsemalt ilma kulukate investeeringuteta
suurematesse masinatesse.
Töö tulemusena leidis autor, et tuludest jätkub investeeringuteks tõhustamaks masinapargi
tööd ning palkamaks lisatööjõudu.Niilus, M. Machinery optimization for 200-hectares grain growing far. A thesis of
professional higher educatioon – Tartu: EMÜ, 2015. 46 pages, 15 figures, 17 tables, 10 extras,
format A4. In Estonian languge.
Fleet optimization, grain growing, workforce need, workforce optimization, cultivation
technology, tractors, seeding.
This thesis aim is to find the optimal machine park for a 200 hectare grain farm. Author
discusses and compares the profitability of different devices and brings out possible
replacements. Author finds the best technology for each machine and the thesis objective has
been based on available literature. Overview of different types of agricultural machinery has
been given primarily on a farm „Pargi talu OÜ”
Empria tridens Konow 1896
No full textEmpria tridens (Konow, 1896) Poecilosoma (Poecilosoma) tridens Konow, 1896: 54, 58. Type locality: Europe “ Europa fere tota ” [original description]. Lectotype (here designated) Ψ: “Satrup. 19.5.82 ” [pale, handwritten: 19.V. 1882 (not VIII!), possibly Satrupholz around Sønderborg, Denmark; Fig. 35]; “Coll. Konow” [white, printed]; “ Syntypus ” [red, printed]; “ Empria tridens Knw Ψ O. Conde det. 1936.” [white, printed and handwritten]; “GBIF-GISHym 3792 ” [white, printed]; “ Lectotypus, Poecilosoma tridens Konow, 1896 Des. M. Heidemaa & M. Prous 2009 ” [red, printed]; “ Empria tridens (Konow, 1896) det. M.Prous 2008 ” [white, printed]; paralectotypes: 2 ɗ, all SDEI. Empria (Triempria) konowi Dovnar-Zapolskij, 1929: 39 –40. Type locality: Sarepta [Russia]. Lectotype (here designated) Ψ: [original labels as in Figs 29, 30]; “ LECTOTYPUS Empria konowi Dovnar-Zapolskij, 1929 Ψ M.Heidemaa & M.Prous des.” [red, printed]; “ Empria tridens (Konow, 1896) det. M.Prous 2008 ” [white, printed]; paralectotype Ψ [original labels as in Figs 31, 32]; all SIZ; syn. nov. Empria (Triempria) gussakovskii Dovnar-Zapolskij, 1929: 40 –41. Type locality: Kostroma District [Russia], Lectotype (here designated) Ψ: [original labels as in Figs 33, 34]; “ LECTOTYPUS Empria gussakovskii Dovnar-Zapolskij, 1929 Ψ M.Heidemaa & M.Prous des.” [red, printed]; “ Empria tridens (Konow, 1896) det. M.Prous 2008 ” [white, printed]; SIZ; syn. nov. Empria (Empria) caucasica Dovnar-Zapolskij, 1929: 38 –39. Type locality: North-West Caucasus, Kluchor, beside Teberda [original description] “Nord-West-Kaukasus, Kluchor, neben Teberda” [Karachay-Cherkess Republic, Russia]. Synonymy according to Conde (1940), see Notes. Host plants. Rubus idaeus and possibly Rubus fruticosus complex. According to Conde (1934) also Geum, but because no ex ovo rearings were done, it is possible that he observed larvae of E. basalis. Distribution. Palaearctic. The verified country records are: Denmark, Estonia, Finland, France, Germany, Great Britain, Hungary, Japan, Mongolia, Russia (Amur Oblast, Kamtschatka Krai, Kostroma Oblast, Leningrad Oblast, Primorskiy Kray, Sakhalin Oblast, Stavropol Krai, Volgograd Oblast), Sweden, Switzerland, Turkey, Ukraine. Key characters. Posterior margin of pronotum and paired patches mostly on abdominal terga 2–6 unpigmented; tegulae and metatibia in basal 1 / 3 vary from unpigmented to black. Ratio of flagellum length to head breadth in females mostly 1.9–2.3, in males mostly 2.4–3.1, and eye length to head length 1.6–2.2. Number of serrulae 16–18, triangular in shape (Figs 42, 45). Valviceps with short lobe, forming inconspicuous notch between valviceps and valvura (Figs 49–50); valvura to valviceps length ratio mostly 0.52–0.63. Notes. Dovanar-Zapolskij (1929) did not designate the holotype of E. konowi but only labelled one female as “m. [mihi] typus ” (from Sarepta) and at least two females (from Sarepta and from Stavropolj) as “m. paratypus ” (original labels of 2 syntype Ψ are illustrated in Figs 29–32). Though Conde (1940) stated that the type of Empria konowi was from Sarepta (“Die Type stammt aus Sarepta”), he examined in fact only one syntype female (“" Paratype " aus Stavropolj 4.V. 1921 ” [not examined, probably lost]). Because there were additional (syntype) females of E. konowi (at least the two from Sarepta) which Conde had not examined, the statement by Conde (1940) does not constitute a valid lectotype designation before 2000 (Articles 74.5, 74.6, ICZN 1999). Also, for E. gussakovskii Dovnar- Zapolskij, 1929 neither the holotype was fixed by the author nor explicitly indicated in the original description that there was only one specimen. No syntypes of Empria caucasica Dovnar-Zapolskij, 1929 were found among Dovnar-Zapolskij’s type material. Thus, we cannot exclude the possibility that it represents E. alector or E. basalis, because these two resembling species were unknown to Conde or not recognized by him (Conde 1940).Published as part of Prous, Marko, Heidemaa, Mikk & Soon, Villu, 2011, Empria longicornis species group: taxonomic revision with notes on phylogeny and ecology (Hymenoptera, Tenthredinidae), pp. 1-39 in Zootaxa 2756 on pages 26-28, DOI: 10.5281/zenodo.20094
The Analysis of Energy Efficiency of a Renovated Accomodation Facility
No full textKäesolev lõputöö lähtub elamule koostatud rekonstrueerimisprojektist, mille lisas 3 toodud kvaliteedinõuded määravad, et hoone peab tulema energiatõhus. See tähendab, et hoonele esitatavad nõuded on märgatavalt karmimad ning sõlmede tüüplahendused erinevad tavaehitusest. Uurimustöö keskendus ehitusprotsessi lõpptulemuse uurimisele. Projekteerimise- ning ehitusprotsessi kirjelduses jõuti järeldusele, et ehitaja valikul on olulise tähtsusega põhjalik eeltöö. Samuti aitab kaasa enda kurssi viimine vastavate ehitustehnoloogiatega ja nõuetega. Lõputöö objektiks oleva hoone ehitamisel esines hulgaliselt probleeme ebapädevate töömeeste ning ebapiisava tööde juhtimise pärast. Töö autori poolt koostati arvutused arvutusliku neto kütteenergiavajaduse leidmiseks. Samuti koostati energiasimulatsioonid erinevate hoone kasutusprofiilide järgi ning võrreldi tulemusi. Võrdluse tulemusena tõdeti, et vastavalt valitud algandmetele erinesid saadud tulemused kordades. Seoses algandmete puudumisega teatud kasutusostarbega hoonetele on võimalik seadusega kooskõlas olles mõjutada saadud tulemusi. Mõõdetud energiakuluandmete analüüsis tõdeti, et hoone on hoolimata õhutiheduse probleemidele tõesti energiatõhus. Võrdlusena toodi välja tehtud uuring kus oli arvutatud välja keskmine eramute elektrikulu hind ruutmeetri kohta. Kuigi kasutusaste on mõningal määral madalam uuringus võrreldavaga saab hinnata, et hoone ülalpidamiskulud on soodsad. Objekti ülevaatusel teostati termograafia, õhulekketest ning ventilatsiooni õhuhulkade mõõtmine. Teostatud termograafia näitas ilmekalt, et avatäidete õhutihedaks teipimisel esines puudusi. Kohati leidus kohtasid kus on hallituseoht. Õhulekketesti tulemused iseloomustasid termograafias nähtud pilti kus avatäidete ümbrused ei olnud piisavalt õhutihedad. Töö autori poolt sooritatud õhulekketesti tulemusena erines saadud õhulekkearv projektis nõutust kordades. Samuti esines puudusi hoone kasutusele võtmisel eelnenud õhulekketestis. Ventilatsiooni õhuhulkade määramine näitas, et ainult ühest plafoonist puhus ligilähedast õhuhulka ventilatsioonibilansis projekteeritule. Väljastatud energiamärgise analüüsis tõdeti, et energiamärgis on väljastatud korrektsetele arvutustele tuginedes. Lisaks toob lõputöö autor välja asjaolu, et vastavuses kehtivatele seadustele, on võimalik energiamärgise väljastaja poolsele lähteandmete valikule mõjutada saadud tulemust ehk hoonele väljastavat energiaklassi.The object of research in this thesis is EKE Projekt’s standard residential building “ELLA” that has been reconstructed as an accommodation facility. The building has been reconstructed pursuant to the quality requirements in Annex 3 of the Reconstruction Project of Residential and Auxiliary Buildings. This means that the requirements for this building are considerably stricter and the standard solutions for junctions differ from common constructions. The purpose of this thesis is to explore the process of designing and constructing an energy efficient building by example of a particular case, likewise, to assess and compare the building’s net consumption of heat energy. Energy simulations were conducted according to usage profiles of different buildings and comparisons were made with the resulting data. As a result of the analysis, it was concluded that the results differed from each other by several times owing to the input data. Due to the lack of input data for buildings with a certain purpose, the results of the tests can be influenced while being in compliance with the law. The performed thermography indicated vividly that there were deficiencies in making doors and windows airtight. There were a few places with mould hazard.. As a result of an air leakage test performed by the author of this thesis, the derived building leakage rate differed by several times from the rate required in the project. Energy label analysis concluded that the label was issued based on correct calculations. The author of this thesis also points out that the obtained result, i.e., the energy label issued for the building can be influenced by the input parameters chosen by the issuer of the energy label, while being in compliance with valid legislation. Measured energy consumption data analysis concluded that despite problems with airtightness, the building really is energy efficient
Rural tourism development opportunities based on the example of Sääritsa village
No full textMagistritöö
Ökonoomika ja ettevõtluse õppekavalMagistritöö "Maaturismi arenguvõimalused Sääritsa küla näitel" uurib Eestis Peipsiääre
piirkonna Sääritsa küla kui maaturismi sihtkoha arenguvõimalusi ja takistusi. Magistritöö
koostaja viis läbi dokumentide läbitöötamise ja huvigruppide esindajate seas
poolstruktureeritud intervjuud. Peamised leiud näitavad, et Sääritsa küla rikkalik loodusja
kultuuripärand loob soodsa aluse turismi arendamiseks, kuid edasise arengu
saavutamiseks on vaja investeeringuid taristu ja teenuste parandamisse ning kogukonna
suuremat kaasamist. Arengu võtmeteguriks on tugeva eestvedaja leidmine ning tervikliku
ja seotult toimiva külastuskogemuse kujundamine läbi sihipäraselt arendatud tegevuste ja
atraktsioonide.The master's thesis "Rural tourism development opportunities based on the example of
Sääritsa village" examines the development opportunities and obstacles of Sääritsa village
in the Peipsiääre region of Estonia as a rural tourism location. The author of the master's
thesis conducted a document review and semi-structured interviews with representatives
of interest groups. The main findings show that the rich natural and cultural heritage of
Sääritsa village creates favorable conditions for tourism development, but further
development requires investments in improving infrastructure and services, as well as
greater community involvement. The key factors for development are finding a strong
leader and designing a holistic and connected visitor experience through purposefully
developed activities and attractions.https://creativecommons.org/licenses/by-nc-nd/4.0
Fitting a Mercedes OM606 Engine into a 2-nd Generation F-Body Pontiac
No full textAntud lõputöö käigus uuriti välja Eesti liiklusseaduse kohased nõuded sõidukite ümberehituseks. Uuringu tulemusena selgus, et mootorivahetuse korral peab lähtuma majandus- ja kommunikatsiooniministri määrusest number 42, mille viimane muudatus jõustus 26.08.2019. Eelmainitud muudatuse käigus kaotati ära nõue, millega reguleeriti vahetusmootori võimsuse, massi ning kubatuuri erinevust mootorivahetuse puhul. Käesolevas lõputöös käsitletavad ümberehitused on tänu viimasele määruse muudatusele võimalikud ka tänavaliikluses kasutatavate autode puhul, milleks käsitletav sõiduk on planeeritud. Vastavalt määrusele ning arvestades ülejäänud sõiduki abiseadmeid projekteeriti lõputöö käigus Mercedes-Benz AG poolt toodetud mootorile OM606.962 ning käigukastile 717.433 vastavad kinnitusdetailid, millega ühildada mainitud tehnika ja 1979. aastal toodetud Pontiac Firebirdi kere. Detailide esialgsed kujundused tehti vastavalt sõiduki mõõtmetele ning muudeti vastavalt tugevusanalüüsidele, et saavutada minimaalne tugevusvaru 30% halvima situatsiooni korral, milleks arvestati kahe jõuülekande detaili kolmest puudumine või lahti tulek sõiduki küljest. Lisaks tugevusvarule pidi arvestama ka sõiduki hilisema hoolduslihtsuse ning ka kinnituste esteetilise välimusega kuna tegemist on sõidukiga, mida soovitakse valmimise järgselt eksponeerida ka autonäitustel. Projekteeritavate kinnitusdetailide jaoks sobivaimaks materjaliks osutus süsinikteras tähistusega S355J2. Detailide koostamiseks vajalikud lehtmetallist osad lõigatakse välja laserlõikuse teel ning torumaterjalist detailid käsitsi. Eraldiseisvad osad liidetakse omavahel MAG keevituse abil ning hiljem puhastatakse liivapritsimise teel, et saavutada ühtlane pinnaviimistlus enne lõppviimistlust. Detailide lõppviimistlus viiakse läbi pulbervärvimise teel, mis tagab kauakestva ning tugeva kaitse korrosiooni eest ning ka hea kaubandusliku välimuse. Lõputöö käigus valminud mudelid valmistatakse vastavalt kirjeldatule ning paigaldatakse valmis kujul sõidukile peale sõiduki kere taastamistööde lõppu. Komplekteeritud sõiduk planeeritakse võtta arvele Eesti liiklusregistris ning kasutusele suvise igapäevasõidukina.This thesis project involved researching the requirements established in the Traffic Act of the Republic of Estonia regarding the reconstruction and modification of vehicles. The research revealed that engine replacements must be carried out in accordance with regulation No. 42 of the Minister of Economic Affairs and Communications, the latest amendment of which entered into force on 26 August 2019. The aforementioned amendment abolished previously applicable restrictions on fitting a vehicle with a new engine with a power, mass, or displacement different from that of the original engine. This amendment makes it possible to perform the reconstruction work that is the subject of this thesis and still have the vehicle be street legal, which the author intends the vehicle in question to be. In accordance with the regulation and taking into account the other auxiliary systems of the vehicle, the author designed suitable mountings for an OM606.962 engine and a 717.433 transmission manufactured by Mercedes-Benz AG to fit the equipment in the body of a 1979 Pontiac Firebird. The initial designs of the mountings were created on the basis of the dimensions of the vehicle and subsequently modified based on strength analyses to achieve a minimum safety margin of 30% in a worst case scenario, which was defined as the missing or breakoff of two out of the three powerplant mountings. In addition to the safety margin, it was necessary to consider the future ease of maintenance of the vehicle, as well as the aesthetic appeal of the mountings, as the author also intends to eventually exhibit the vehicle at motor shows. Carbon steel S355J2 was identified as the most suitable material for the designed mountings. The sheet metal parts necessary to construct the mountings will be laser cut, while tubular parts will be hand cut. The individual parts will be joined by means of MAG welding, then cleaned through sandblasting in order to achieve a uniform surface finish before final finishing. Final finishing will involve powder coating to provide long-lasting and reliable protection against corrosion as well as an attractive commercial appearance. The models created in the course of this project will be constructed as described, and will be installed in the vehicle following the restoration of the vehicle body. The author intends to register the assembled vehicle in the Estonian traffic register and use it as an everyday summertime vehicle
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