kiva liisa vesik: Topics by WorldWideScience.org

Sample records for kiva liisa vesik

Kais-Vesik said ebameeldiva vastase / Andres Kalvik

Index Scriptorium Estoniae

Kalvik, Andres, 1982-

2007-01-01

Stavangeris Suure Slämmi alagrupis kolmanda koha saanud ning koha 24 parema seas taganud Kristjan Kais ja Rivo Vesik lähevad play-off'i avaringis vastamisi Saksamaa duoga Mischa Urbatzka - Jonas Reckermann
Kati Tolmoff: linn peabki oma sportlasi toetama / Maili Kangur

Index Scriptorium Estoniae

Kangur, Maili

2009-01-01

Tartlasest sulgpallur Kati Tolmoff sai Tartu Kultuurkapitali poolt olümpialootuse stipendiumi. Stipendiumi said ka Peeter Kümmel, Eveli Saue, Kristjan Kais, Rivo Vesik, Sirkka-Liisa Kivine, Tiidrek Nurme, Kaire Leibak, Künter Rothberg ja Maris Mägi
Economic Analysis of Kiva VCF Treatment System Compared to Balloon Kyphoplasty Using Randomized Kiva Safety and Effectiveness Trial (KAST) Data.

Science.gov (United States)

Beall, Douglas P; Olan, Wayne J; Kakad, Priyanka; Li, Qianyi; Hornberger, John

2015-01-01

Vertebral compression fractures (VCFs) are the most common osteoporotic fractures and cause persistent pain, kyphotic deformity, weight loss, depression, reduced quality of life, and even death. Current surgical approaches for the treatment of VCF include vertebroplasty (VP) and balloon kyphoplasty (BK). The Kiva® VCF Treatment System (Kiva System) is a next-generation alternative surgical intervention in which a percutaneously introduced nitinol Osteo Coil guidewire is advanced through a deployment cannula and subsequently a PEEK Implant is implanted incrementally and fully coiled in the vertebral body. The Kiva System's effectiveness for the treatment of VCF has been evaluated in a large randomized controlled trial, the Kiva Safety and Effectiveness Trial (KAST). The Kiva System was non-inferior to BK with respect to pain reduction (70.8% vs. 71.8% in Visual Analogue Scale) and physical function restoration (38.1 % vs. 42.2% reduction in Oswestry Disability Index) while using less bone cement. The economic impact of the Kiva system has yet to be analyzed. To analyze hospital resource use and costs of the Kiva System over 2 years for the treatment of VCF compared to BK. A representative US hospital. Economic analysis of the KAST randomized trial, focusing on hospital resource use and costs. The analysis was conducted from a hospital perspective and utilized clinical data from KAST as well as unit-cost data from the published literature. The cost of initial VCF surgery, reoperation cost, device market cost, and other medical costs were compared between the Kiva System and BK. The relative risk reduction rate in adjacent-level fracture with Kiva [31.6% (95% CI: -22.5%, 61.9%)] demonstrated in KAST was used in this analysis. With 304 vertebral augmentation procedures performed in a representative U.S. hospital over 2 years, the Kiva System will produce a direct medical cost savings of $1,118 per patient and $280,876 per hospital. This cost saving with the Kiva
Liisa Smith : kaalun Tallinnas lavastamist / Liisa Smith ; interv. Andris Feldmanis

Index Scriptorium Estoniae

Smith, Liisa

2007-01-01

Londonis elaval eestlasest teatrilavastajal Liisa Smithil, kes tõi seal mullu lavale Jaan Tätte tüki "Ristumine peateega", on nüüd valminud uus lavastus - iirlase Marina Carri "On Raftery's Hill"
Liisa Kruusmäe juhuslikult pealt kuuldud hetked / Kaarel Kressa

Index Scriptorium Estoniae

Kressa, Kaarel, 1983-

2011-01-01

Liisa Kruusmäe näitus "Overheard Stories / Pealtkuuldud lood" Tallinnas Draakoni galeriis. 2010. a. Eesti Kunstiakadeemia maaliosakonna lõpetanud Liisa Kruusmägi omandab EKA-s joonistamise alal magistrikraadi
Kui Liisa kirjutas kirja... / Ulrike Plath, Kaarel Vanamölder

Index Scriptorium Estoniae

Plath, Ulrike, 1972-

2016-01-01

Liisa Pulsti elusaatusest, maakogukonnast pärit vallasemast, kes andis oma kolm last lastekodusse ning kes hiljem Riia baltisaksa perekonnas muutus armastatud perekonnaliikmeks. Artikkel tutvustab Liisa poolt 1946. aastal kirjutatud kirja
Liisa Pulk - valmis pöörasusteks / Merit Kask

Index Scriptorium Estoniae

Kask, Merit

2010-01-01

Tartus Vanemuise teatris asub sügisest 2010 tööle äsja Lavakooli lõpetanud Liisa Pulk. Esimeseks rolliks on üks peaosadest Sofi Oksaneni romaani "Puhastus" järgi valmivas lavastuses, lavastajaks Liisa Smith. Noor näitleja endast ja oma tööst
KIVA-Update June 2012

Energy Technology Data Exchange (ETDEWEB)

Carrington, David B [Los Alamos National Laboratory

2012-06-07

Development of a fractional step, a Predictor-Corrector Split (PCS), or what is often known as a projection method combining hp-adaptive system in a Finite Element Method (FEM) for combustion modeling has been achieved. This model will advance the accuracy and range of applicability of the KIVA combustion model and software used typically for internal combustion engine modeling. This abstract describes a PCS hp-adaptive FEM model for turbulent reactive flow spanning all velocity regimes and fluids that is being developed for the new KIVA combustion algorithm, particularly for internal combustion engines. The method and general solver is applicable to Newtonian and non- Newtonian fluids and also for incompressible solids, porous media, solidification modeling, and fluid structure interaction problems. The fuel injection and injector modeling could easily benefit from the capability of solving the fluid structure interaction problem in an injector, helping to understand cycle to cycle variation and cavitation. This is just one example where the new algorithm differs from the old, in addition to handling Conjugate Heat Transfer (CHT), although there a numerous features that makes the new system more robust and accurate. In these ways, the PCS hp-adaptive algorithm does not compete with commercial software packages, those often used in conjunction with the currently distributed KIVA codes for engine combustion modeling. In addition, choosing a local ALE method on immersed moving parts represented by overset grid that is 2nd order spatially accurate, allows for easy grid generation from CAD to fluid grid while also provide for robustness in handling any possible moving parts configuration without any code modifications. The combined methods employed produce a minimal amount of computational effort as compared to fully resolved grids at the same accuracy. We demonstrate the solver on benchmark problems for the all flow regimes as follows: (1) 2-D backward-facing step
Aiamängud vormi ja värviga / Anna-Liisa Unt ; interv. Victoria Parmas

Index Scriptorium Estoniae

Unt, Anna-Liisa, 1982-

2006-01-01

Eesti Maaülikoolis ja Rootsi Põllumajandusülikoolis maastikuarhitektuuri õppinud Anna-Liisa Unt (sünd. 1982) endast, oma aiakujundustest, tüüpilisest eestlase aiast tänapäeval jm. Anna-Liisa Undi tööde loetelu
Kiva.org: Crowd-Sourced Microfinance & Cooperation in Group Lending

OpenAIRE

Hartley, Scott

2010-01-01

At the end of 2008 Kiva.org announced the creation of “Lending Teams,” or cohesive open or closed membership groups established and categorized according to scope. These Lending Teams introduce forms of cooperative many-to-one and many-to-many group lending, based on tenuous concepts of identity. Groups vary according to category, size, scope, and activity, and this impacts participatory vitality of crowd-sourced lending. Looking specifically at Kiva.org as a prominent online community for p...
KAST Study: The Kiva System As a Vertebral Augmentation Treatment-A Safety and Effectiveness Trial: A Randomized, Noninferiority Trial Comparing the Kiva System With Balloon Kyphoplasty in Treatment of Osteoporotic Vertebral Compression Fractures.

Science.gov (United States)

Tutton, Sean M; Pflugmacher, Robert; Davidian, Mark; Beall, Douglas P; Facchini, Francis R; Garfin, Steven R

2015-06-15

The KAST (Kiva Safety and Effectiveness Trial) study was a pivotal, multicenter, randomized control trial for evaluation of safety and effectiveness in the treatment of patients with painful, osteoporotic vertebral compression fractures (VCFs). The objective was to demonstrate noninferiority of the Kiva system to balloon kyphoplasty (BK) with respect to the composite primary endpoint. Annual incidence of osteoporotic VCFs is prevalent. Optimal treatment of VCFs should address pain, function, and deformity. Kiva is a novel implant for vertebral augmentation in the treatment of VCFs. A total of 300 subjects with 1 or 2 painful osteoporotic VCFs were randomized to blindly receive Kiva (n = 153) or BK (n = 147). Subjects were followed through 12 months. The primary endpoint was a composite at 12 months defined as a reduction in fracture pain by at least 15 mm on the visual analogue scale, maintenance or improvement in function on the Oswestry Disability Index, and absence of device-related serious adverse events. Secondary endpoints included cement usage, extravasation, and adjacent level fracture. A mean improvement of 70.8 and 71.8 points in the visual analogue scale score and 38.1 and 42.2 points in the Oswestry Disability Index was noted in Kiva and BK, respectively. No device-related serious adverse events occurred. Despite significant differences in risk factors favoring the control group at baseline, the primary endpoint demonstrated noninferiority of Kiva to BK. Analysis of secondary endpoints revealed superiority with respect to cement use and site-reported extravasation and a positive trend in adjacent level fracture warranting further study. The KAST study successfully established that the Kiva system is noninferior to BK based on a composite primary endpoint assessment incorporating pain-, function-, and device-related serious adverse events for the treatment of VCFs due to osteoporosis. Kiva was shown to be noninferior to BK and revealed a positive trend
Reimagining Charity: Kiva's Ideology of Entrepreneurial Charity

DEFF Research Database (Denmark)

Bajde, Domen

2011-01-01

We attempt to tease out the imaginary conceptions that make lending through Kiva, an emergent microfinance charity, meaningful to its creators and supporters. A combination of interpretive methods (analysis of consumer narratives, brand genealogy) is used to outline and dissect Kiva’s innovative ...... ideology of entrepreneurial charity....
KiVa Anti-Bullying Program in Italy: Evidence of Effectiveness in a Randomized Control Trial.

Science.gov (United States)

Nocentini, Annalaura; Menesini, Ersilia

2016-11-01

The present study aims to evaluate the effectiveness of the KiVa anti-bullying program in Italy through a randomized control trial of students in grades 4 and 6. The sample involved 2042 students (51 % female; grade 4, mean age = 8.85; ds = 0.43; grade 6, mean age = 10.93; ds = 0.50); 13 comprehensive schools were randomly assigned into intervention (KiVa) or control (usual school provision) conditions. Different outcomes (bullying, victimization, pro-bullying attitudes, pro-victim attitudes, empathy toward victims), analyses (longitudinal mixed model with multiple-item scales; longitudinal prevalence of bullies and victims using Olweus' single question), and estimates of effectiveness (Cohen's d; odds ratios) were considered in order to compare the Italian results with those from other countries. Multilevel models showed that KiVa reduced bullying and victimization and increased pro-victim attitudes and empathy toward the victim in grade 4, with effect sizes from 0.24 to 0.40. In grade 6, KiVa reduced bullying, victimization, and pro-bullying attitudes; the effects were smaller as compared to grade 4, yet significant (d ≥ 0.20). Finally, using Olweus dichotomous definition of bullies and victims, results showed that the odds of being a victim were 1.93 times higher for a control student than for a KiVa student in grade 4. Overall, the findings provide evidence of the effectiveness of the program in Italy; the discussion will focus on factors that influenced successfully the transportability of the KiVa program in Italy.
Kõrkjasaar Põlvas = Bulrush Island in Põlva / Anna-Liisa Unt

Index Scriptorium Estoniae

Unt, Anna-Liisa, 1982-

2004-01-01

Põlvas 2003. a. korraldatud ideevõistluste tulemused: keskpargi võistlus: II preemia - OÜ Kaunimad Aiad, III - Mart Mets; paisjärve kujunduse konkurss: II - Anna-Liisa Unt, III - Mart Mets. A.-L. Undi realiseeritud võistlustööst, paisjärve saare valguskujundusest. 4 ill
KIVA3, Transient Multicomponent 2-D and 3-D Reactive Flows with Fuel Sprays

International Nuclear Information System (INIS)

Amsden, A.A.

2001-01-01

1 - Description of program or function: KIVA3VRELEASE2 is a computer program for the numerical calculation of transient, two and three-dimensional, chemically reactive flows with sprays. It is a newer version of the earlier KIVA3 (1993) that has now been extended to model vertical of canted valves in the cylinder head of a gasoline or diesel engine. KIVA3, in turn, was based on the earlier KIVA2 (1989) and uses the same numerical solution procedure and solves the same sort of equations. KIVA3VRELEASE2 uses a block-structured mesh with connectivity defined through indirect addressing. The departure from a single rectangular structure in logical space allows complex geometries to be modeled with significantly greater efficiency because large regions of deactivated cells are no longer necessary. Cell-face boundary conditions permit greater flexibility and simplification in the application of boundary conditions. KIVA3VRELEASE2 contains a number of significant changes. New features enhance the robustness, efficiency, and usefulness of the overall program for engine modeling. Automatic restart of the cycle with a reduced time-step in case of iteration limit or temperature overflow will reduce code crashes. A new option provides automatic deactivation of a port region when it is closed from the cylinder and reactivation when it communicates with the cylinder. Corrections in the code improve accuracy; extensions to the particle-based liquid wall film model makes the model more complete and a spli injection option has been added. A new subroutine monitors the liquid and gaseous fuel phases and energy balance data and emissions are monitored and printed. New features have been added to the grid generator K3PREP and the graphics post processor, K3POST. 2 - Method of solution: KIVA3VRELEASE2 solves the unsteady equations of motion of a turbulent, chemically reactive mixture of ideal gases, coupled to the equations for a single-component vaporizing fuel spray. The gas
KiVa Antibullying Program: Overview of Evaluation Studies Based on a Randomized Controlled Trial and National Rollout in Finland

Directory of Open Access Journals (Sweden)

Christina Salmivalli

2012-12-01

Full Text Available The effects of a Finnish national school-based antibullying program (KiVa were evaluated in a randomized controlled trial (2007–2009 and during nationwide implementation (since 2009. The KiVa program is been found to reduce bullying and victimization and increase empathy towards victimized peers and self-efficacy to support and defend them. KiVa increases school liking and motivation and contributes to significant reductions in anxiety, depression, and negative peer perceptions. Somewhat larger reductions in bullying and victimization were found in the randomized controlled trial than in the broad rollout, and the largest effects were obtained in primary school (grades 1–6. The uptake of the KiVa program is remarkable, with 90 percent of Finnish comprehensive schools currently registered as program users.
Sibelius: Kullervo, Op. 7. Eeva-Liisa Saarinen / Robert Layton

Index Scriptorium Estoniae

Layton, Robert

1994-01-01

Uuest heliplaadist "Sibelius: Kullervo, Op. 7. Eeva-Liisa Saarinen, Jorma Hynninen. Estonian State Academic Male Choir, Helsinki University Male Choir, Helsinki Philharmonic Orchestra / Paavo Berglund. EMI Matrix CD CDM 565080-2 (72 minutes); Comparative versions: Mattila, Hynninen, Gothenburg SO / Järvi (1/87)(BIS)CD 313; Rorholm, Hynninen, Los Angeles PO / Salonen (7/93)(SONY)SK 52563
Nagu emalt laenamine. Kiva fenomenaalne laenuäri / Madis Talmar

Index Scriptorium Estoniae

Talmar, Madis

2011-01-01

Bangladeshi majandusteadlase ja Nobeli rahupreemia laureaadi Muhhamad Yunuse vaeste abistamiseks loodud mikrolaenude süsteemist ning sama mudeli põhjal loodud inimeselt inimesele laenamise suhtluskeskkonnast Kiva.org. Kasutatud on Kivast kirjutatud artikleid ja Jessica Jackley TED-ettekannet
The KiVa antibullying program in primary schools in Chile, with and without the digital game component: study protocol for a randomized controlled trial.

Science.gov (United States)

Gaete, Jorge; Valenzuela, Daniela; Rojas-Barahona, Cristian; Valenzuela, Eduardo; Araya, Ricardo; Salmivalli, Christina

2017-02-20

Bullying is a major problem worldwide and Chile is no exception. Bullying is defined as a systematic aggressive behavior against a victim who cannot defend him or herself. Victims suffer social isolation and psychological maladjustment, while bullies have a higher risk for conduct problems and substance use disorders. These problems appear to last over time. The KiVa antibullying program has been evaluated in Finland and other European countries, showing preventive effects on victimization and self-reported bullying. The aims of this study are (1) to develop a culturally appropriate version of the KiVa material and (2) to test the effectiveness of the KiVa program, with and without the online game, on reducing experiences of victimization and bullying behavior among vulnerable primary schools in Santiago (Chile), using a cluster randomized controlled trial (RCT) design with three arms: (1) full KiVa program group, (2) partial KiVa (without online game) program group and (3) control group. This is a three-arm, single-blind, cluster randomized controlled trial (RCT) with a target enrolment of 1495 4th and 5th graders attending 13 vulnerable schools per arm. Students in the full and partial KiVa groups will receive universal actions: ten 2-h lessons delivered by trained teachers during 1 year; they will be exposed to posters encouraging them to support victims and behave constructively when witnessing bullying; and a person designated by the school authorities will be present in all school breaks and lunchtimes using a visible KiVa vest to remind everybody that they are in a KiVa school. KiVa schools also will have indicated actions, which consist of a set of discussion groups with the victims and with the bullies, with proper follow-up. Only full KiVa schools will also receive an online game which has the aim to raise awareness of the role of the group in bullying, increase empathy and promote strategies to support victimized peers. Self-reported victimization
Kuldne poolkaar embab Pärnut / Silvia Paluoja ; kommenteerinud Eeri Tammik ja Maia-Liisa Kasvandik

Index Scriptorium Estoniae

Paluoja, Silvia, 1956-

2010-01-01

Pärnu ja Pärnut ümbritsevate piirkondade võrgustikke siduva teemaplaneeringu koostamisest. Lisatud Pärnumaa Omavalitsuste Liidu esimehe Eeri Tammiku ja Tahkuranna valla planeeringunõuniku Maia-Liisa Kasvandiku kommentaarid

Poliitkommunikatsioon kohalike valimiste eel / Liisa Past, Tarvo Sarmet, Taavi Pukk ... [jt.] ; intervjueerinud Küllike Heide

Index Scriptorium Estoniae

2013-01-01

Lähenevate kohalike valimiste eel poliitilise kommunikatsioonitegevuse korraldusest praegustes parlamendierakondades. Mõtteid jagavad Liisa Past ja Tarvo Sarmet Sotsiaaldemokraatlikust Erakonnast, Taavi Pukk Keskerakonnast, Gerrit Mäesalu IRL-st ning Silver Pukk Reformierakonnast
Nurmsi küla omainimene Soomest / Ritva-Liisa Pihlaja ; interv. Toomas Help

Index Scriptorium Estoniae

Pihlaja, Ritva-Liisa

2000-01-01

Soome arhitekti Ritva-Liisa Pihlaja näitus "Nurmsi küla Järvamaal", mis annab ülevaate ühest Eesti külast ja selle arhitektuurist, on Helsingi Soome keskkonnakeskuses, edaspidi jääb Järvamaa muuseumile. R.-L. Pihlaja oma juurtest ja uurimistööst Eestis. Intervjuu tehtud 1999. a. kevadel Tartus.
Kas eestlastel on põhjust Bushi taga igatsema jääda? / Heiki Suurkask ; kommenteerinud Liisa Past

Index Scriptorium Estoniae

Suurkask, Heiki, 1972-

2009-01-01

Hinnangutest USA presidendi George W. Bushi ametiajale. Autor leiab, et G. W. Bush ei ole olnud hiilgav, kuid ta pole olnud ka päris vilets riigipea. Aja jooksul on mõne USA presidendi maine paranenud. Kommenteerib Liisa Past
Huvi õpilase vastu peaks olema suurem / Maria Tiro, Merilin Piipuu, Valdo Randpere, Liisa Pakosta ; küsitlenud Sigrid Kõiv

Index Scriptorium Estoniae

2008-01-01

Jüri Gümnaasiumi direktor Maria Tiro, Eesti Õpilasesinduste Liidu juht Merilin Piipuu, lapsevanem ja IBM Eesti juht Valdo Randpere ning lapsevanem ja Eesti Lastevanemate Liidu esindaja Liisa Pakosta arutlesid koolivägivalla üle tänapäeva koolis
Los Alamos National Security, LLC Request for Information on how industry may partner with the Laboratory on KIVA software.

Energy Technology Data Exchange (ETDEWEB)

Mcdonald, Kathleen Herrera [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

2016-02-29

KIVA is a family of Fortran-based computational fluid dynamics software developed by LANL. The software predicts complex fuel and air flows as well as ignition, combustion, and pollutant-formation processes in engines. The KIVA models have been used to understand combustion chemistry processes, such as auto-ignition of fuels, and to optimize diesel engines for high efficiency and low emissions. Fuel economy is heavily dependent upon engine efficiency, which in turn depends to a large degree on how fuel is burned within the cylinders of the engine. Higher in-cylinder pressures and temperatures lead to increased fuel economy, but they also create more difficulty in controlling the combustion process. Poorly controlled and incomplete combustion can cause higher levels of emissions and lower engine efficiencies.
KIVA-hpFE: Predictive turublent reactive and multiphase flow in engines : Science Supporting Mission of the Laboratory

Energy Technology Data Exchange (ETDEWEB)

Carrington, David Bradley [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Waters, Jiajia [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

2017-09-26

Research and development of KIVA-hpFE for turbulent reactive and multiphase flow particularly as related to engine modeling program has relevance to National energy security and climate change. Climate change is a source problem, and energy national security is consumption of petroleum products problem. Accurately predicting engine processes leads to, lower greenhouse gas (GHG) emission, where engines in the transportation sector currently account for 26% of the U.S. GHG emissions. Less dependence on petroleum products leads to greater energy security. By Environmental Protection Agency standards, some vehicles are now reaching 42 to the 50 mpg mark. These are conventional gasoline engines. Continued investment and research into new technical innovations, the potential exists to save more than 4 million barrels of oil per day or approximately $200 to $400 million per day. This would be a significant decrease in emission and use of petroleum and a very large economic stimulus too! It is estimated with further advancements in combustion, the current emissions can be reduced up to 40%. Enabling better understanding of fuel injection and fuel-air mixing, thermodynamic combustion losses, and combustion/emission formation processes enhances our ability to help solve both problems. To provide adequate capability for accurately simulating these processes, minimize time and labor for development of engine technology, are the goals of our KIVA development program.
CFD modeling of combustion processes using KIVA3V Code with partially stirred reactor model for turbulence-combustion interactions

International Nuclear Information System (INIS)

Jarnicki, R.; Sobiesiak, A.

2002-01-01

In order to solve the averaged conservation equations for turbulent reacting flow one is faced with a task of specifying the averaged chemical reaction rate. This is due to turbulence influence on the mean reaction rates that appear in the species concentration Reynolds-averaged equation. In order to investigate the Partially Stirred Reactor (PaSR) combustion model capabilities, a CFD modeling using KIVA3V Code with the PaSR model of two very different combustion processes, was performed. Experimental results were compared with modeling
The Need to Help. The Domestic Arts of International Humanitarism, de Liisa H. Malkki

Directory of Open Access Journals (Sweden)

Ignacio Fradejas-García

2016-05-01

Full Text Available La literatura crítica con el humanitarismo ha emergido en el ámbito político internacional para quedarse. Renombrados científicos sociales como Didier Fassin (2012 o Thomas G. Weiss (2016, entre otros, han trabajado sobre los efectos de las intervenciones humanitarias desde diferentes ángulos. Cambiando el clásico enfoque en los beneficiarios, las políticas y los programas para pasar a indagar sobre las organizaciones y los trabajadores humanitarios, Liisa Malkki ha hecho una gran contribución a esta literatura profundizando en el porqué y el cómo de las acciones humanitarias. La autora es conocida por sus reflexiones etnográficas sobre las situaciones de exilio y refugio causadas por las sucesivas guerras y genocidios que asolaron en el último cuarto del siglo XX la zona de los grandes lagos africanos. Durante el genocidio ruandés de 1994, Malkki estaba finalizando un libro sobre un conflicto previo y olvidado en Burundi que provocó la llegada de refugiados hutus a Tanzania. La etnografía resultante, Purity and Exile (1995, explora cómo la violencia política y la cotidianeidad del exilio transforman la identidad y la conciencia histórica de los refugiados.
Kaisi kimbutav õlavalu sundis eestlasi turniiri katkestama / Ann Hiiemaa

Index Scriptorium Estoniae

Hiiemaa, Ann

2007-01-01

Nädal tagasi maailmameistrivõistlustelt viienda koha rannavõrkpallurid Kristjan Kais ja Rivo Vesik olid Kaisi õlavalu tõttu sunnitud Austrias Klagenfurtis toimuva Grand Slami etapi pooleli jätma
Iz kakogo sora proizrastajet kultura. I kak vsegda o muzõke / Ilja Sundelevitsh

Index Scriptorium Estoniae

Sundelevitsh, Ilja

2002-01-01

Autor kirjeldab Tallinna Kunstihoones tekstiilikunstnike näitusel nähtud Liisa Tomasbergi, Eva Liisa Kriisi, Liisa Kallami ja Monika Järgi kunstiprojekti "Kasvuhoone" ning Jüri Okase suureformaadilisi arhitektuurifotosid Rotermanni soolalaos
22. X avati Tallinna Linnagaleriis...

Index Scriptorium Estoniae

2003-01-01

Kosmoseteemalisel grupinäitusel "Hallo, Kosmos, siin Maa!" osalevad tekstiilikunstnikud Keret Altpere, Raul Erdel, Monika Järg, Liisa Kallam, Eva-Liisa Kriis, Annike Laigo, Tarmo Mäesalu, Ülle Saatmäe, Liisa Tomasberg, fotograaf Pelle Kalmo, graafik Mari-Liis Laanemaa, muusik Taavi Laatsit
Eesti disain taas Pariisis

Index Scriptorium Estoniae

2007-01-01

Eesti Disainerite Liit esitleb septembris 2007 oma kollektsiooni Pariisi sisustusmessi Maison&Object disainisektsioonis NOW! Stendi kujundus on Anneli Lobjalt. Osalejatest nimetatud: Annike Laigo, Merike Rehepapp, Jaanus Orgusaar, Jan Graps, Ken Ruut, Jaakko Matsalu, Eva-Liisa Kriis, Liisa Kallam, Liisa Tomasberg, Tarmo Luisk, Monika Järg, Keret Altpere, Elna Kaasik, Tõnis Vellama ja Ilona Gurjanova
15. juunini on tarbekunstimuuseumi galeriis...

Index Scriptorium Estoniae

2003-01-01

Ühisnäitusel "Ruum ei ole tühi" osalevad tekstiilikunstnikud Eva-Liisa Kriis, Monika Järg, Liisa Kallam, Liisa Tomasberg, Tarmo Mäesalu, Keret Altpere, Ülle Saatmäe, Annike Laigo, tootedisainerid Raul Erdel, Kelly Kert, arhitekt Urmas Luure, sisearhitekt Terje Kallast, fotograaf Pelle Kalmo, graafik Mari-Liis Laanemaa, muusik Taavi Laatsit
Eksperiment - teeme kõige noorema Vanemuise näitleja vanaemaks

Index Scriptorium Estoniae

2010-01-01

Vanemuise teatri noorim näitleja Liisa Pulk osaleb Anne-Ly Soo (grimmiala juht) ja Erle Vannuse (jumestuskunstnik) lavagrimmi eksperimendis. Artiklis teatrigrimeerija tööst lähemalt. Lisaks näitleja CV: "Liisa Pulk"
Manneri "Hüüd tuulde"

Index Scriptorium Estoniae

2007-01-01

31. okt. toimub Tallinna Kirjanike Majas Eeva-Liisa Manneri luuleõhtu. Loetakse värskelt ilmunud tõlkeluulet: Manner, Eeva-Liisa. Hüüd tuulde : valik luuletusi / soome keelest tõlkinud Ly Seppel ; [järelsõna: Ly Seppel ja Andres Ehin. Tallinn] : Huma, 2007
HPC Institutional Computing Project: W15_lesreactiveflow KIVA-hpFE Development: A Robust and Accurate Engine Modeling Software

Energy Technology Data Exchange (ETDEWEB)

Carrington, David Bradley [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Waters, Jiajia [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

2017-01-05

KIVA-hpFE is a high performance computer software for solving the physics of multi-species and multiphase turbulent reactive flow in complex geometries having immersed moving parts. The code is written in Fortran 90/95 and can be used on any computer platform with any popular complier. The code is in two versions, a serial version and a parallel version utilizing MPICH2 type Message Passing Interface (MPI or Intel MPI) for solving distributed domains. The parallel version is at least 30x faster than the serial version and much faster than our previous generation of parallel engine modeling software, by many factors. The 5th generation algorithm construction is a Galerkin type Finite Element Method (FEM) solving conservative momentum, species, and energy transport equations along with two-equation turbulent model k-ω Reynolds Averaged Navier-Stokes (RANS) model and a Vreman type dynamic Large Eddy Simulation (LES) method. The LES method is capable modeling transitional flow from laminar to fully turbulent; therefore, this LES method does not require special hybrid or blending to walls. The FEM projection method also uses a Petrov-Galerkin (P-G) stabilization along with pressure stabilization. We employ hierarchical basis sets, constructed on the fly with enrichment in areas associated with relatively larger error as determined by error estimation methods. In addition, when not using the hp-adaptive module, the code employs Lagrangian basis or shape functions. The shape functions are constructed for hexahedral, prismatic and tetrahedral elements. The software is designed to solve many types of reactive flow problems, from burners to internal combustion engines and turbines. In addition, the formulation allows for direct integration of solid bodies (conjugate heat transfer), as in heat transfer through housings, parts, cylinders. It can also easily be extended to stress modeling of solids, used in fluid structure interactions problems, solidification, porous media
The Role of Rating and Loan Characteristics in Online Microfunding Behaviors

OpenAIRE

Paruthi, Gaurav; Frias-Martinez, Enrique; Frias-Martinez, Vanessa

2016-01-01

We propose an in-depth study of lending behaviors in Kiva using a mix of quantitative and large-scale data mining techniques. Kiva is a non-profit organization that offers an online platform to connect lenders with borrowers. Their site, kiva.org, allows citizens to microlend small amounts of money to entrepreneurs (borrowers) from different countries. The borrowers are always affiliated with a Field Partner (FP) which can be a microfinance institution (MFI) or other type of local organizatio...
Eksistentsi krõbisev videolint / Janar Ala

Index Scriptorium Estoniae

Ala, Janar, 1979-

2010-01-01

Videokunsti näitus "Kõik saab korda" Kumu Kunstimuuseumis 2. jaanuarini 2011, kuraator Maria-Kristiina Soomre. Osalevad järgmised kunstnikud: Marina Abramović, Eija-Liisa Ahtila, Kai Kaljo, Mike Marshall, Ene-Liis Semper, Santeri Tuori, Guido van der Werve. Pikemalt serbia kunstniku Marina Abramović'i ja soome kunstniku Eija-Liisa Ahtila töödest
"Desarrollo software de un módulo de cinética química en fase gaseosa para simulación 3D de motores de Combustión interna"

OpenAIRE

Forigua Rodriguez, Carlos Felipe

2015-01-01

Un reactor a volumen constante para (RVC) fue implementado utilizando Cantera dentro de KIVA-4 en un acople multifísico con el fin de simular varios motores. Se simuló un motor de encendido por compresión de carga homogénea (HCCI), un motor Diesel de inyección directa y un motor encendido por chispa. Sólo densidades parciales se intercambian entre KIVA y Cantera. Una densidad parcial inicial se calcula en KIVA para Cantera. Nuevas densidades son generadas por Cantera usando el ...
Eestis toodetud ilu / Kristel Kirss

Index Scriptorium Estoniae

Kirss, Kristel, 1967-

2008-01-01

Valik Eesti väljapanekutest mais 2008 Eesti Näituste Pirita messikeskuses toimunud messilt "Interjöör 2008": OÜ Valley lammastega vaip ja mängumuruga tumbad (disainerid Ruth Vassel, Luule Aasma), istumispadjad (tekstiilikunstnikud Liisa Tomasberg, Liisa Kallam), kõlarid (disainer Aleksandr Gorodenkov, nahatükkidest tumba ja lastemööbel (disainer Ingeborg Ahlberg), iste "Põder" (disainer Sirli Ehari), OÜ Seos jonnipunn-tool (disainer Merike Rehepapp), OÜ Resvok lesimisase "Lazy" (disainer Tõnis Krik)

Prediction of DI diesel engine emissions by multidimensional simulation; Tajigen simulation ni yoru DI diesel engine no seino yosoku

Energy Technology Data Exchange (ETDEWEB)

Ishii, Y; Zhang, L; Hamaguchi, K; Minami, T; Yokota, K [Isuzu Advanced Engineering Center, Tokyo (Japan)

1997-10-01

To achieve the goal of using multidimensional simulation as a useful tool for predicting engine emissions in the stage of design or choice chamber shape and nozzle specifications, much work is needed to improve and modify calculation models. In this study , the spray model of KIVA-II have been modified using experimentally measured penetration of spray liquid phase. The modified KIVA-II was applied to a HSDI engine with different chambers and injectors. As a result of comparing with experiments, it was found that the KIVA-II using the modified spray model could relatively predict the change of emissions. 6 refs., 12 figs., 2 tabs.
Välieluruumi ajakiri Õu = Õu, the Landscape Architecture Magazine

Index Scriptorium Estoniae

2016-01-01

Välieluruumi ajakirjast "Õu", peatoimetaja Anna-Liisa Unt, kolleegium Merle Karro-Kalberg ja Karin Bachmann, kujundaja Marje Eelmaa (Tuumik Stuudio). Maastikuarhitektuuri aastapreemia 2016 "Maastikuarhitektuuri tegu" laureaat
Kuidas Jänkuonu Daviesega punti lõi / Inna Grünfeldt

Index Scriptorium Estoniae

Grünfeldt, Inna, 1961-

2008-01-01

Joel Chandler Harrise "Onu Remuse lood", lavastaja Jaanika Juhanson, lavakujundus Mihkel Ehala, valguskujundus Priidu Adlas, kostüümikunstnik Liisa Soolepp, peaosas Toomas Suuman. Esietendus 5. septembril
Basic instinct / Marju Lepajõe

Index Scriptorium Estoniae

Lepajõe, Marju, 1962-

2011-01-01

Arvustus: Franz Kafka. Kirjad Milenale : [autori kirjad M. Jesenskale]. Tallinn : Perioodika, 1996. (Loomingu raamatukogu ; 1996, 27/30) ; Juhan Liiv. Mu kallis Liisi : [kirjad Liisa Goldingule]. Tartu : Ilmamaa, 1996
Krokodill sõi karu mett / Eero Kangor

Index Scriptorium Estoniae

Kangor, Eero, 1982-

2007-01-01

Tartu Ülikooli, Tartu Kõrgema Kunstikooli ja Tartu Kunstikooli õpilaste näitusest Tartu Kunstimuuseumis, kuraator Liisa Kaljula. Pikemalt Ronald Baumanni, Helen Kikkase, Margit Lõhmuse maalidest, Jana Huuli skulptuurist
Aktivismist ja sekkunisest linnaruumi / Lilia del Rio

Index Scriptorium Estoniae

Rio, Lilia del

2007-01-01

25.-26. IV Eesti Kunstiakadeemias toimunud 4. Linnauurimuse päevadest "Uurimine ja aktivism". Hanna Harrise, Giacomo Botta, Joanna Saad-Suloneni, Liisa Horelli ja Rasmus Kase ettekannetest konverentsil. Sisaldab bibliograafiat
Ülemaaline ilulugejate 15. võistulausumine

Index Scriptorium Estoniae

2008-01-01

Vabariiklikust etlejate konkursist. 4.-6. klasside arvestuses võitis Grand Prix'i Markkus Pulk, laureaatideks tulid Maria Pihlak, Kenneth Norden ja Laura Elisabeth Konsand. Eripreemiad said Laura Oolup, Maria Zaitseva, žürii aitähi said Sander Aavik ja Liisa Lutter. 7.-9. klasside arvestuses võitis Grand Prix' Anna Talvi, laureaatideks tulid Liisa Saaremäel, Karmen Kozma, Riko Osila. Eripreemiad said Indrek Jõe, Eliise Seedre, žürii aitähi sai Kirke Algma. 10.-12. klasside arvestuses võitis Grand Prix' Doris Tääker, laureaatideks tulid Jörgen Liik, Virgo Ernits ja Ilja Massalov. eripreemiad said Marian Heinat ja Kadri Toomsalu. Kuressaare Gümnaasiumi õpilasžürii preemiad läksid Kenneth Nordenile, Riko Osilale ja Doris Tääkerile
Performance, maal ja savinõud / Juta Kivimäe

Index Scriptorium Estoniae

Kivimäe, Juta, 1952-

2000-01-01

Soome kunstnikerühma Mirácolo näitus "Kontakt" Kastellaanimaja galeriis. Esinevad performance' ikunstnik Heikki Mäntymaa, maalikunstnikud Liisa Harkkomaa ja Heikki Hamarila ning keraamik Terttu Lemström
2. VIII avati Y-galerii hoovis ja ka mujal Tartus...

Index Scriptorium Estoniae

2005-01-01

"PostsovkhoZ 5" satelliitnäitus "Unfurled/Lahtirullitud : avalik lipunäitus". Kuraator Marisa Jahn (USA). Osalejad loetletud (Eestist Sirja Liisa Vahtra). E-saalis näidatakse Max Hattleri videot "Collision/Kokkupõrge"
Abieluakti koostamine EELKs - õigus või kohustus? / Merje Talvik

Index Scriptorium Estoniae

Talvik, Merje

2008-01-01

Vaimulike õigusest pärast siseministeeriumi korraldatava koolituse läbimist riigi nimel abielu sõlmida. Kommenteerivad Kristjan Luhamets, Rein Schihalejev, Mare Palgi, Illimar Toomet, Mart Jaanson, Anna-Liisa Vaher ja Kalle Gaston
Merimetsas uuriti moekunsti ravitoimet / Anne Vetik

Index Scriptorium Estoniae

Vetik, Anne

2006-01-01

Merimetsa Tugikeskuse erivajadustega kliendid valmistasid rahvusvahelise disainiprojekti raames rõivaid. Tehtud fotodest pannakse kokku moeteraapiat tutvustav näitus. Eestvedajaks kunstnik Sirja-Liisa Vahtra, Pariisis elav fotograaf Diana Lui ja rootsi disainer Otto von Busch
Vanemuine otsib teed head teatrit hindava vaatajani / Sven Karja ; interv. Margot Visnap

Index Scriptorium Estoniae

Karja, Sven, 1968-

2008-01-01

Vanemuise eesseisvast hooajast. 27. sept. Tartu Sadamateatris esietendunud Donald Margulies' draamast "Kogutud teosed", lavastaja Eva Klemets; novembris esietendusvast Billy Roche'i "Vaene loom vihma käes", lavastaja Liisa Smith ja teistest uuslavastustest lühidalt
Eesti Energia esindused = Eesti Energia branches / Andres Labi, Janno Roos

Index Scriptorium Estoniae

Labi, Andres, 1977-

2013-01-01

Eesti Energia klienditeeninduse kontorite sisekujundusest. Autorid: Janno Roos, Andres Labi ja Liisa Põime (Ruumilabor). Visuaalne identiteet: Tank.Teenuste disain: Urmas Pastarus. ESLi aastapreemiate žürii esimehe Kaido Kivi ning žürii liikme Raivo Puusepa arvamused
Betamag.ee vahendab oma elukunsti / Anne Vetik

Index Scriptorium Estoniae

Vetik, Anne

2006-01-01

Graafilisele disainile ja popkultuurile pühendatud elektroonilisest ajakirjast Beta. Idee Liisa-Triin Vurmalt ja Jaana Davidjantsilt, kaastööd teevad Tristan Priimägi, Jass Seljamaa ja Erik Morna. Ilmumas neljas Beta, esimene veebruaris 2005
Tartu Ülikooli uued audoktorid

Index Scriptorium Estoniae

2003-01-01

Tartu Ülikooli uued audoktorid on: Wilfried Schlüter, Liisa Marjatta Ahtee, Hans Hilmar Goebel, Tapani Ruutu, Jürgen Mittelstrass, Keijo Aarre Virtanen, Giovanni Romeo, José Luis Abbud Mas, Svennik Haeyer, Björn Wittrock
Kiasma-mees Perttu Rastas jagas kogemusi / Karen Jagodin

Index Scriptorium Estoniae

Jagodin, Karen, 1982-

2004-01-01

Kiasma meediakonsultandi ja kuraatori Perttu Rastase ettekanne Tartus Lutsu teatrimajas muuseumi toimimisest kunstitegemise võimalikkuseni. Teksti illustreerimiseks näidati Roi Vaara, Erkki Kurenniemi, Eija Liisa Ahtila videosid. Juttu oli ka Teemu Mäki kassitapmist kujutavast videost
Kaubamaja Lastemaailm IV korrusel = Children's World on the fourth floor of Tallinn Department Store

Index Scriptorium Estoniae

2015-01-01

Lastemaailm Tallinna Kaumabaja IV korrusel Gonsiori tänav 2. Arhitektuuri Sihtkapitali äramärkimine 2012 visuaalselt atraktiivse ning kontseptuaalselt tervikliku laste- ja vanemasõbraliku fantaasiamaailma loomise eest. Sisearhitektid Janno Roos, Andres Labi, Liisa Põime (Ruumilabor)
Eesti mood versus Vene mood / Anne Metsis

Index Scriptorium Estoniae

Metsis, Anne, 1958-

2008-01-01

Kauplusest "Iida" Tallinna vanalinnas Suur-Karja tn. 2. Sisekujundus Taso Mäharilt. Poes müüakse Kristina Viirpalu disainitud rõivaid, Eva-Liisa Kriisa kujundatud mööblit. Rjazanist pärit moekunstnikust Diana Denissovast
Stiilsed emad ja tütred / Keilit Aedma

Index Scriptorium Estoniae

Aedma, Keilit

2016-01-01

Sisearhitekt Aet Pieli ja tema tütre Anrike Pieli, moedisainer Roberta Eineri ja tema ema Ljudmilla Eineri, tekstiilikunstnik Signe Kivi ja tema tütre Liisa Kivi, ajakirjanik Keilit Aedma ja tema ema Kadi Aedma-Reiningu riietumisstiilist
Muusika

Index Scriptorium Estoniae

2005-01-01

Anna-Liisa Bezrodny III preemia võidust rahvusvahelisel viiuldajate konkursil, 8. märtsil algavast Viljandi Kultuuriakadeemia suurüritusest muusikatriaad 2005, Erkki-Sven Tüüri "Passion" ettekandest Sydneys, Eesti Richard Wagneri Ühingu korraldatavast kontserdist Estonia talveaias

RMK büroohoone = State Forest Management Centre office building / Arhitektuuribüroo Studio-3

Index Scriptorium Estoniae

2013-01-01

Riigimetsa Majandamise Keskuse bürooruumide (Toompuiestee 24, Tallinn) sisekujundusest. Autorid: Reet Põime, Liisa Põime, Anu Põime, Andres Põime, Kristi Prinzmann, Lauri Kalm, Lauri Vaimel (Studio-3). Arhitekt Ott Kadariku arvamus. Arhitektuuribüroo Studio-3 lühitutvustus
"Spikker" kui tööotsija ABC / Pille Rõivas

Index Scriptorium Estoniae

Rõivas, Pille

2006-01-01

Praktilisest õppefilmist "Spikker. Dokumentaalne õppefilm: noored esmakordselt tööturul", mille eesmärgiks on õpetada otsima esimest töökohta. Filmis jälgitakse kahe noore tööotsinguid. Kommenteerivad Jaana Pikalev, Kaija-Liisa Koovit
[Uue Eesti loojad. Uuden Viron luojat : välähdyksiä Tampereen Rudolf Steiner-koulun viro-kummiryhmän toiminnasta 1989-1999 ; Varsinais-Suomi ja Viro : Varsinais-Suomen Virokeskus 20 vuotta] / Hannu Oittinen

Index Scriptorium Estoniae

Oittinen, Hannu, 1959-

2015-01-01

Arvustus: Uue Eesti loojad. Uuden Viron loojat / toimetaja Liisa Niinikangas. Jyväskylä : Lighthouse Consulting, 2014 ; Varsinais-Suomi ja Viro : Varsinais-Suomen Virokeskus 20 vuotta / toimetajad Veikko Laakso ja Kirsi Äyräs. [Turku] : Varsinais-Suomen Viro-keskus, 2015
Videokunsti parimad stiilinäited Kumus

Index Scriptorium Estoniae

2010-01-01

Kumu Kunstimuuseumis avatakse 28. oktoobril 2010 rahvusvaheline videokunsti näitus "Kõik saab korda". Osalevad Marina Abramović (Serbia/USA), Eija-Liisa Ahtila (Soome), Kai Kaljo, Mike Marshall (Inglismaa), Ene-Liis Semper, Santeri Tuori (Soome), Guido van der Werve (Holland)
Sofi Oksase luule muutus Vanemuises teatrireaalsuseks / Andres Laasik

Index Scriptorium Estoniae

Laasik, Andres, 1960-2016

2010-01-01

18. septembril Vanemuise teatri väikeses majas esietendunud lavastusest "Puhastus", autor Sofi Oksanen, lavastaja Liisa Smith. Vaatluse all on sündmused Eesti lähiminevikust (1936-1992). "Puhastust" mängitakse Helsingis Kansallisteatteri laval kaks korda jaanuaris 2011
Development and Application of a Numerical Framework for Improving Building Foundation Heat Transfer Calculations

Science.gov (United States)

Kruis, Nathanael J. F.

Heat transfer from building foundations varies significantly in all three spatial dimensions and has important dynamic effects at all timescales, from one hour to several years. With the additional consideration of moisture transport, ground freezing, evapotranspiration, and other physical phenomena, the estimation of foundation heat transfer becomes increasingly sophisticated and computationally intensive to the point where accuracy must be compromised for reasonable computation time. The tools currently available to calculate foundation heat transfer are often either too limited in their capabilities to draw meaningful conclusions or too sophisticated to use in common practices. This work presents Kiva, a new foundation heat transfer computational framework. Kiva provides a flexible environment for testing different numerical schemes, initialization methods, spatial and temporal discretizations, and geometric approximations. Comparisons within this framework provide insight into the balance of computation speed and accuracy relative to highly detailed reference solutions. The accuracy and computational performance of six finite difference numerical schemes are verified against established IEA BESTEST test cases for slab-on-grade heat conduction. Of the schemes tested, the Alternating Direction Implicit (ADI) scheme demonstrates the best balance between accuracy, performance, and numerical stability. Kiva features four approaches of initializing soil temperatures for an annual simulation. A new accelerated initialization approach is shown to significantly reduce the required years of presimulation. Methods of approximating three-dimensional heat transfer within a representative two-dimensional context further improve computational performance. A new approximation called the boundary layer adjustment method is shown to improve accuracy over other established methods with a negligible increase in computation time. This method accounts for the reduced heat transfer
Ärgake! Toimub Rauma Biennale Balticum 2006 / Ave Randviir

Index Scriptorium Estoniae

Randviir, Ave, 1981-

2006-01-01

Soomes Rauma kunstimuuseumis, linnaruumis ja Lönnströmi kunstimuuseumis 1. oktoobrini 2006 toimuvast biennaalist Rauma Biennale Balticum 2006 - "Wake up!". Eestit esindavad Alice Kask, Marko Mäetamm, Liina Siib ja Sirja-Liisa Vahtra. Näituse kuraatorid Janne Koski ja Henna Paunu
Traditsioonilise folkloori käekäik Bulgaarias / Rahel Laura Vesik

Index Scriptorium Estoniae

Vesik, Rahel Laura

2008-01-01

Arvustus: Живи човешки съкровища - Бьлгария: Living Human Treasures Bulgaria. Sofia : Academic Publishing House Marin Drinov, 2004. Kokkuvõte Bulgaaria Folkloori Instituudi UNESCO projektist
Diesel Engine Cold-Starting Studies: Optically Accessible Engine Experiments and Modeling

National Research Council Canada - National Science Library

Henein, Naeim

1997-01-01

.... The pre-ignition chemistry showed great sensitivity to the compressed air temperature. KIVA with a modified shell model responds accordingly to the change of inlet air temperatures and fuel injection parameters...
Kopteriõnnetuses hukkunud muusikute mälestuseks loodi fond / Evelin Nõmmik

Index Scriptorium Estoniae

Nõmmik, Evelin

2005-01-01

10. augustil kopteriõnnetuses hukkunud noorte muusikute Liisa Suusteri ja Carolina Kremenetski vanemad asutasid Eesti Rahvuskultuuri Fondi (ERKF) juurde mälestusfondi, mille põhikirja järgi toetatakse igal paarisarvulisel aastal viiuldajate ja paaritutel aastatel pianistide õpinguid (ERKF nõukogu esimees on dirigent Eri Klas)
Lotte lasteaed : Ida 8, Tartu = Lotte Nursery School : Ida 8, Tartu / Margit Mutso

Index Scriptorium Estoniae

Mutso, Margit, 1966-

2009-01-01

Lasteaiast, mille arhitektid on Indrek Peil ja Siiri Vallner (pälvisid riigi kultuuripreemia, Kavakava), sisearhitektid Tea Tammelaan, Malle Jürgenson, Krista Lepland (pälvisid EK arhitektuuri sihtkapitali aastapreemia 2008) ja Sirli Ehari (Laika, Belka & Strelka), maastikuarhitekt Anna-Liisa Unt. Žürii hinnang lasteaiale
Journal of Biosciences | Indian Academy of Sciences

Indian Academy of Sciences (India)

Home; Journals; Journal of Biosciences; Volume 33; Issue 2. Issue front cover thumbnail. Volume 33, Issue 2. June 2008, pages 157-307. pp 157-158. Clipboard: Recovery from amblyopia in adults via decreased visual cortical inhibition caused by experience in an enriched environment · Liisa A Tremere Raphael Pinaud.
Kõik saab korda / Tamara Luuk

Index Scriptorium Estoniae

Luuk, Tamara, 1952-

2010-01-01

Rahvusvaheline videokunsti näitus "Kõik saab korda" Kumu Kunstimuuseumis 2. jaanuarini 2011. Kuraator Maria-Kristiina Soomre, kujundaja Berit Teeäär. Osalevad Marina Abramović (Serbia/USA), Eija-Liisa Ahtila (Soome), Kai Kaljo, Mike Marshall (Inglismaa), Ene-Liis Semper, Santeri Tuori (Soome), Guido van der Werve (Holland)
Kontseptuaalne ja liikumispõhine nüüdistants Täiskuu tantsufestivalil Soomes / Evelin Lagle

Index Scriptorium Estoniae

Lagle, Evelin, 1986-

2010-01-01

Tantsufestivalist "Täudenkuun Tanssit" (Full Moon Dance Festival). Tantsulavastustest - Tommi Kitti "Riff", Jyrki Karttuneni "Situation Room", Kenneth Kvanströmi "Destruction Song", Liisa Petti "Mabel or the Gueen of Bones", Elina Pirineni "A Friend of the Pianist", Johanna Tuukkaneni "Outstanding Performance" ja Palle Granhoj sooloetendus "(...It's a Very Big Secret...)"
Anna Mouglalis kõikide vastu / Anna Mouglalis ; intervjueerinud Guillermo Espinosa

Index Scriptorium Estoniae

Mouglalis, Anna

2010-01-01

Prantsuse moekunstniku Coco Chaneli ja vene helilooja Igor Stravinki armuloost rääkivas filmis "Coco Chanel & Igor Stravinski" mängib peaosa Chaneli moemaja modell ja reklaaminägu. Intervjuus endast ja oma rollidest
FIBIT - Fashion is back in Tallinn / Marina Poltavtseva

Index Scriptorium Estoniae

Poltavtseva, Marina

2004-01-01

Moepäevad FIBIT Viru keskuses. Üks idee algatajaid on moekunstnik Katrin Kuldma. 1. oktoobril näidatakse soome moekunstniku Ritva-Liisa Pohjalaineni kollektsiooni Allergia - From Dreams to the Unique. Teisi moedemonstratsioone, millede stilistideks on Riina Põldroos, Aldo Järvsoo, Tanel Veenre ja Katrin Kuldma. Rõivad on valitud Viru keskuse kauplustest
Riigifirmal kahte sorti reservväelased / Oliver Kund

Index Scriptorium Estoniae

Kund, Oliver

2018-01-01

Reservõppekogunemisel osalev Eesti Energia töötaja, kes on ametiühingu liige, jääb õppuste ajaks palgata. Ametiühingusse mittekuuluvatel töötajatel õppuste ajal aga töötasu säilib. Soolise võrdõiguslikkuse ja võrdse kohtlemise voliniku Liisa Pakosta kommentaar
Maakondliku Liivide etluskonkursi võitis gümnasist Marian Heinat / Ene Kallas

Index Scriptorium Estoniae

Kallas, Ene

2008-01-01

Maakondliku Juhan ja Jakob Liivi etluskonkursi žüriisse kuulusid Ott Aardam, Käthe Pihlak, Piret Rauk, Vaido Luks ja Marili Pärtel. Grand prix' võitis Marian Heimat, laureaatideks tulid Liisa Saaremäel, Maria Pihlak ja Laura Oolup. Eripreemiad said Marii Metsmaa, Ermo Loik, Sander Aavik, Kaimar Nuut ja Priidu Aardam
Suur müüdikonverents Tartus / Evelin Banhard

Index Scriptorium Estoniae

Banhard, Evelin

2008-01-01

Tartus toimunud rahvusvahelisest konverentsist "Suurte kultuuriliste ja kirjanduslike müütide saatus tänapäeval". Pikemalt Liisa Saariluoma, Jüri Talveti, Angelika Stefanova, Tanel Lepsoo, Caroline De Wagteri, Sonia Bravo Utrera, Ana Martinoska, Marin Laagi, Rutt Hinrikuse, Jeanne Elisabeth Gleseneri, Sabine Coelsch-Foisneri, Harvey L. Hixi ja Hannu K. Riikoneni ettekannetest
Lastedisain ehk kodumaine disainerlooming lastele / Dagmar Reinolt

Index Scriptorium Estoniae

Reinolt, Dagmar

2015-01-01

Eesti disainerite poolt toodetud lastepärased esemed - võileivaalus (VarmCountry), tapeet "Värvi ise" (Anni Varm), söögitool "Mari" (Julia Maria Künnap), nööpsadul (Liisa Elken), öökullipadi (Ann Lutter), kiikhobu "Fox" (Maile Grünberg), KuKuJuKu helkurid (Okeiko) ja Dadamora lasteriided (Mariliis Oksaar,Tõnis Kenkmaa)

75 FR 42773 - Notice of Inventory Completion: Robert S. Peabody Museum of Archaeology, Phillips Academy...

Science.gov (United States)

2010-07-22

... reasonably traced between the Ancestral Puebloan culture found at Tecolote Pueblo ruin and modern-day... those made and used by modern-day Puebloan people. Evidence supports continuity in material culture with.... Similarities in site architecture, including Kivas and material culture, associated funerary objects, and...
Bum stroitelstva zdanii posolstva / Urmas Oja

Index Scriptorium Estoniae

Oja, Urmas, 1981-2012

2008-01-01

Pekingi (võidutöö "Tetris" autorid: Andres Põime, Lauri Vaimel, Liisa Põime) ja Riia (võidutöö "Teele" autorid: Lembit-Kaur Stöör, Ülo-Tarmo Stöör, Heidi Urb) Eesti saatkonnahoonete arhitektuurivõistlustest, võidu- ja premeeritud töödest. Eesti virtuaalsest saatkonnahoonest Second Life'is (arhitekt Scope Cleaver, disainer Miko Omegamu, skulptor Seifert Surface)
Saatkonnahoonete buum / Urmas Oja

Index Scriptorium Estoniae

Oja, Urmas, 1981-2012

2008-01-01

Pekingi (võidutöö "Tetris" autorid: Andres Põime, Lauri Vaimel, Liisa Põime) ja Riia (võidutöö "Teele" autorid: Lembit-Kaur Stöör, Ülo-Tarmo Stöör, Heidi Urb) Eesti saatkonnahoonete arhitektuurivõistlustest, võidu- ja premeeritud töödest. Eesti virtuaalsest saatkonnahoonest Second Life'is (arhitekt Scope Cleaver, disainer Miko Omegamu, skulptor Seifert Surface)
Tselluloidi aura ja kaasaegne kunst / Hanno Soans

Index Scriptorium Estoniae

Soans, Hanno, 1974-

2004-01-01

Muutustest filmitegemises ja filmiesteetikas. Filmi sarnanemisest tehniliselt üha enam videoga. Kunstnike tegelemisest filmiga. 26. XI näeb kinos "Sõprus" "1+1=1" raames kaasaegsete kunstnike teoseid laiekraanil: Eija-Liisa Ahtila "If 6 was 9" (1995), "Today" (1996-97), "Consolation Service" (1999); Sara Lunden ja Henry Moore Selder (sünd. 1973, Stockholm) "Deadly Boring" (2001), "She is Dead" (2003)
"Rat Kingi" arvutimaailma kangelased jäädvustati filmilindile / Andres Laasik

Index Scriptorium Estoniae

Laasik, Andres, 1960-2016

2011-01-01

Arvutisõltlaste elust rääkiva Soome-Eesti põnevusfilmi "Rat King" (MakingMovies, Allfilm) filmivõtetest Eesti Televisiooni stuudios ja mujal Eestis. Režissöör Petri Kotwica, Eesti-poolne produtsent Ivo Felt, kunstnik Jaagup Roomet, kostüümikunstnik Anu Lensment
A Phenomenological Model for Prediction Auto-Ignition and Soot Formation of Turbulent Diffusion Combustion in a High Pressure Common Rail Diesel Engine

Directory of Open Access Journals (Sweden)

Qinghui Zhou

2011-06-01

Full Text Available A new phenomenological model, the TP (Temperature Phase model, is presented to carry out optimization calculations for turbulent diffusion combustion in a high-pressure common rail diesel engine. Temperature is the most important parameter in the TP model, which includes two parts: an auto-ignition and a soot model. In the auto-ignition phase, different reaction mechanisms are built for different zones. For the soot model, different methods are used for different temperatures. The TP model is then implemented in KIVA code instead of original model to carry out optimization. The results of cylinder pressures, the corresponding heat release rates, and soot with variation of injection time, variation of rail pressure and variation of speed among TP model, KIVA standard model and experimental data are analyzed. The results indicate that the TP model can carry out optimization and CFD (computational fluid dynamics and can be a useful tool to study turbulent diffusion combustion.
Haridustee = Education / Tiiu-Liisa Rummo-Laes

Index Scriptorium Estoniae

Rummo-Laes, Tiiu-Liisa

2006-01-01

Põhihariduses soolist eristumist ei ole märgata, murettekitavalt suur on poiste väljalangemine enne põhihariduse omandamist. Tütarlapsed ja noormehed üld- ja kutsehariduses, kesk- ja kõrghariduses. Noorte õppimine ja töötamine leibkonnatüübiti. Tabel, graafik, diagrammid
Moekunstniku katsetused kinolinal / Anna-Liisa Soomann

Index Scriptorium Estoniae

Soomann, Anna-Liisa

2007-01-01

Taani moekunstniku Mads Nırgaardi filmidebüüt Kopenhaageni moenädalal. Film tutvustab kunstniku moekollektsiooni, kaasa teevad taani supermodellid Freja Beha ja Eddie Merz, muusika DJ Djuna Barnes'ilt
Mis on mee sees? / Liisa Puusepp

Index Scriptorium Estoniae

Puusepp, Liisa, 1980-

2017-01-01

Õietolmuanalüüsi kasutuselevõtust meetodina möödub tänavu 100 aastat. Õietolmuanalüüsiga saab kindlaks määrata, mis taimede õietolmuterad mees leiduvad ning korjeala. Tallinna Ülikooli ökoloogia keskuses rakendatakse õietolmuanalüüsi eelkõige mineviku taimkatte struktuuri, maakasutuse muutuse ja maastiku avatuse rekonstrueerimiseks, lisaks tehakse ka mee õietolmuanalüüsi
78 FR 21408 - Notice of Inventory Completion: U.S. Department of the Interior, Bureau of Indian Affairs...

Science.gov (United States)

2013-04-10

... unidentified organic items. Prior to the beginning of a University of Denver archeology field school project at..., a kiva, and a pithouse located on one side of a crevice overlooked by a cliff. The architecture is... preponderance of evidence, including archeology, architecture, material culture, oral traditions, and expert...
Kuldlõvid Louise Bourgeois'le, Bruce Naumanile ja Itaalia paviljonile / Reet Varblane

Index Scriptorium Estoniae

Varblane, Reet, 1952-

1999-01-01

Veneetsia 48. rahvusvahelise kunstibiennaali preemiasaajad, premeeritud tööd, korralduskomitee ja žürii koosseis. Kuldlõvid: Louise Bourgeois, Bruce Nauman, Itaalia paviljon (Monica Bonvicini, Bruna Esposito, Luisa Lambri, Paola Pivi, Grazia Toderi ühisprojekt); kolm rahvusvahelist preemiat: Doug Aitken, Cai Gou-Qiang, Shirin Neshat; žürii tõstis esile: Georges Abeagbo, Eija-Liisa Ahtila, Katarzyna Kozura ? (Kozyra), Lee Bul; UNESCO preemia: Ghada Amer
Eesti keha kate / Milla Mägi

Index Scriptorium Estoniae

Mägi, Milla, 1949-

2005-01-01

Konkursist "Eesti keha kate", mille eesmärk oli ärgitada tegema moodsaid rõivaid rahvakunsti ja rahvusliku käsitöötraditsiooni vaimus. I preemia - Liisa Murdvee kangastelgedel kootud kaltsumaterjalist mantel ja jakk, II - Tiina Reeseni rahvuslik komplekt emale ja tütrele, V - Eve Sisa tikandiga korsett, "Kodukolde" auhind - Aide Leit-Lepmetsa Haapsalu pitsi motiividel pruutkleit. 6 värv. ill
Ilusalt lugemine ehk võistulausumine Linnateatris / Riin Aljas

Index Scriptorium Estoniae

Aljas, Riin

2008-01-01

Vabariiklikust etlejate konkursist. 4.-6. klasside arvestuses võitis Grand Prix' Markkus Pulk, laureaatideks tulid Maria Pihlak, Kenneth Norden ja Laura Elisabeth Konsand. 7.-9. klasside arvestuses võitis Grand Prix' Anna Talvi, laureaatideks tulid Liisa Saaremäel, Karmen Kozma, Riko Osila. 10.-12. klasside arvestuses võitis Grand Prix' Doris Tääker, laureaatideks tulid Jörgen Liik, Virgo Ernits ja Ilja Massalov
Värvi triumf / Mai Levin

Index Scriptorium Estoniae

Levin, Mai, 1942-

2010-01-01

Näitus "Neoimpressionismi jälgedes. Mägi ja Finch" Kumu Kunstimuuseumis 12. septembrini 2010. Kuraator Tiina Abel, kuraatori abi Liisa Kaljula, kujundaja Inga Heamägi. Puäntillismi mõjust, Konrad Mäe pöördumisest täppiva laadi poole. Inglise päritolu belgia-soome kunstniku Alfred William Finchi avastamisest. Prantsuse ja eesti kunstnike töödest näitusel
Validation of a LES turbulence modeling approach on a steady engine head flow

NARCIS (Netherlands)

Huijnen, V.; Somers, L.M.T.; Baert, R.S.G.; Goey, de L.P.H.; Dias, V.

2005-01-01

The application of the LES turbulence modeling approach in the Kiva-environment is validated on a complex geometry. Results for the steady flow in a realistic geometry of a production type heavy-duty diesel engine head with 120 mm cylinder bore are presented. The bulk Reynolds number is Reb = 1 fl
Report on Research

Science.gov (United States)

1989-06-01

transducers to monitor the effects of low aircraft over- flights on a well-preserved kiva wall at Standing Fall House near Kayenta . AZ. This site was...coupled seismic wave allowed ancient structures at Standing Fall detection of low-flying aircraft at range House and Long House near Kayenta , far exceeding
Britannian puolustusministeriö tuhosi Afganistan-kirjan ensipainoksen / Kaja Kunnas

Index Scriptorium Estoniae

Kunnas, Kaja

2011-01-01

Suurbritannia kaitseminister ostis ära ning seejärel hävitas Toby Harndeni kirjutatud Afganistani sõjast rääkiva raamatu esimese trüki. Eesti kaitseministeerium ja president Toomas Hendrik Ilves olid eelnevalt väljendanud muret raamatu pärast Suurbritannia ja Ameerika Ühendriikide ametiasutustele
Cloud Library for Directed Probabilistic Graphical Models

Science.gov (United States)

2014-10-01

notwithstanding any other provision of law , no person shall be subject to any penalty for failing to comply with a collection of information if it does not...with the Kiva dataset. The Bitcoin and Akamai data sets are deeply graph-structured and are thus not a natural fit for what is essentially a
Stipendiumiprogramm, mis suunatud stimuleerima noorte arengut / Viire Sepp

Index Scriptorium Estoniae

Sepp, Viire, 1955-

2014-01-01

Programmist, mis väärtustab reaalainete olümpiaade, kui võimekate noorte arengu üht olulist stiimulit. Tallinna Tehnikaülikooli üliõpilase Mette Purde, Harvardi ülikooli üliõpilase Erik Tamre, Cambridge'i ülikooli üliõpilase Jaan Tootsi ning Tartu Ülikooli üliõpilaste Janno Veeorg, Lona Liisa Sutt, Madis Ollikainen ja Jaagup Repän arvamused olümpiaadide olulisusest
Optimization of combustion chamber geometry and operating conditions for compression ignition engine fueled with pre-blended gasoline-diesel fuel

International Nuclear Information System (INIS)

Lee, Seokhwon; Jeon, Joonho; Park, Sungwook

2016-01-01

Highlights: • Pre-blended gasoline-diesel fuel was used with direct injection system. • KIVA-CHEMKIN code modeled dual-fuel fuel spray and combustion processes with discrete multi-component model. • The characteristics of Combustion and emission on pre-blended fuel was investigated with various fuel reactivities. • Optimization of combustion chamber shape improved combustion performance of the gasoline-diesel blended fuel engine. - Abstract: In this study, experiments and numerical simulations were used to improve the fuel efficiency of compression ignition engine using a gasoline-diesel blended fuel and an optimization technology. The blended fuel is directly injected into the cylinder with various blending ratios. Combustion and emission characteristics were investigated to explore the effects of gasoline ratio on fuel blend. The present study showed that the advantages of gasoline-diesel blended fuel, high thermal efficiency and low emission, were maximized using the numerical optimization method. The ignition delay and maximum pressure rise rate increased with the proportion of gasoline. As the gasoline fraction increased, the combustion duration and the indicated mean effective pressure decreased. The homogeneity of the fuel-air mixture was improved due to longer ignition delay. Soot emission was significantly reduced up to 90% compared to that of conventional diesel. The nitrogen oxides emissions of the blended fuel increased slightly when the start of injection was retarded toward top dead center. For the numerical study, KIVA-CHEMKIN multi-dimensional CFD code was used to model the combustion and emission characteristics of gasoline-diesel blended fuel. The micro genetic algorithm coupled with the KIVA-CHEMKIN code were used to optimize the combustion chamber shape and operating conditions to improve the combustion performance of the blended fuel engine. The optimized chamber geometry enhanced the fuel efficiency, for a level of nitrogen oxides

A Review on Liquid Spray Models for Diesel Engine Computational Analysis

Science.gov (United States)

2014-05-01

developed by Los Alamos National Laboratories, USA (15); OpenFoam developed by OpenCFD, U.K.; and AVBP developed by Centre Européen de Recherche et de...Validating Non-Reacting Spray Cases With KIVA-3V and OpenFoam , SAE technical paper 2013-01-1595, 2013. 17. Senecal, P.; Pomraning, E.; Richards, K
Cylinder-averaged histories of nitrogen oxide in a DI diesel with simulated turbocharging

Science.gov (United States)

Donahue, Ronald J.; Borman, Gary L.; Bower, Glenn R.

1994-10-01

An experimental study was conducted using the dumping technique (total cylinder sampling) to produce cylinder mass-averaged nitric oxide histories. Data were taken using a four stroke diesel research engine employing a quiescent chamber, high pressure direct injection fuel system, and simulated turbocharging. Two fuels were used to determine fuel cetane number effects. Two loads were run, one at an equivalence ratio of 0.5 and the other at a ratio of 0.3. The engine speed was held constant at 1500 rpm. Under the turbocharged and retarded timing conditions of this study, nitric oxide was produced up to the point of about 85% mass burned. Two different models were used to simulate the engine mn conditions: the phenomenological Hiroyasu spray-combustion model, and the three dimensional, U.W.-ERO modified KIVA-2 computational fluid dynamic code. Both of the models predicted the correct nitric oxide trend. Although the modified KIVA-2 combustion model using Zeldovich kinetics correctly predicted the shapes of the nitric oxide histories, it did not predict the exhaust concentrations without arbitrary adjustment based on experimental values.
Loengud. Kontsert. Koorid. Teated

Index Scriptorium Estoniae

2006-01-01

Loengust "Muusikaesseistika I" 19. sept. Lai t 34 aud 72. Kontsertidest: Tartu raekojas 22. sept. esineb hispaania ansambel Zarabanda, TÜ aulas 20. sept. esinevad "Meistrite akadeemia" sarjas Pille Lille Muusikute Toetusfondi laureaat Anna-Liisa Bezrodnõi viiulil ja Thea Nestor klaveril. TÜ Kammerkoor ja Tartu Akadeemiline Meeskoor võtavad vastu uusi liikmeid (info: www.ut.ee/TYKK ja www.tam.eu). Tartu Ülikooli rahvakunstiansambel ootab uusi tantsijaid (info: www.ut.ee)
Kuraator: Abramovići näidata on suur luksus / Rael Artel

Index Scriptorium Estoniae

Artel, Rael, 1980-

2011-01-01

Kuraator Rael Artel kaasaegse kunsti festivali "Art ist kuku nu ut 2011" raames Tartu Kunstimuuseumis 15.09.-13.11.2011 avatud näitusest "Art Must Be Beautiful. Marina Abramovići valitud teosed" ja näituse nimiteosest. Festivali raames on Y-galeriis 30. okt.-ni avatud näitus "Tartust ära" (osalevad Anna Hints, Eva Labotkin, Marja-Liisa Plats, Toomas Thetloff) ning Tartu Kunstimajas 16. okt.-ni rahvusvaheline kuraatorinäitus "Keeldumised"
Klassikalise arhitektuuriga Pekingisse / Urmas Oja

Index Scriptorium Estoniae

Oja, Urmas, 1981-2012

2008-01-01

Pekingi Eesti saatkonnahoone arhitektuurikonkursist. I koht - "Tetris" autorid Andres Põime, Lauri Vaimel, Liisa Põime; II - "Maadligi, vettligi maja", autorid Erik Nobel, Christian Jensen, Kristen Herup Sovang, Soren Andersson, Pille Kivihall, Dan Ljungar, Hans Willadsen - arhitektuuribüroost NOBEL arkitekter; III - "Ai sha ni ya", autorid Kalle Vellevoog, Velle Kadalipp, Tiiu Truus, Martin Prommik arhitektuuribüroost JVR. Konkursitöödest on Eesti Ahitektuurimuuseumis avatud näitus. Küsimustele vastab arhitekt Andres Põime
A Scalable, Open Source Platform for Data Processing, Archiving and Dissemination

Science.gov (United States)

2016-01-01

other provision of law , no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a...ISI team contributed to analyses of 5 of these 6 challenges ( BitCoin was not addressed). The analysis is shown in detail for Kiva (Section 5.1.1) and
Ettevaatust! Nüüdistants / Anna-Liisa Villmann

Index Scriptorium Estoniae

Villmann, Anna-Liisa

2010-01-01

11. Augusti Tantsufestivalist Tallinnas. Lühidalt Ele Viskuse etendusest "Taidlusrühm Rähn", Liis Ilula etendusest "Älis mnimedemaal", Henri Hüti etendusest "The reader", Mihkel Ernitsa vabaõhuetendusest "Kehanäppajad". Brüsseli nüüdistantsu kooli P.A.R.T.S. etendustest. Samas 14.-28. augustini kestva festivali kavast
Artishoki aastanäitus "XXX" / Liisa Kaljula

Index Scriptorium Estoniae

Kaljula, Liisa

2008-01-01

Tallinna Linnagaleriis 10.-19. VII avatud Maarin Ektermanni ja Margus Tamme kureeritud näitusel osalesid kriitikutest Indrek Grigor, Kati Ilves, Margus Kiis, Elnara Taidre, Anneli Porri, Ave Randviir, Maria-Kristiina Soomre, Andreas Trossek, Karolina Labowicz-Dymanus (Varssavi) ja Isin Önol ((Istanbul), kunstnikest Tanja Muravskaja, Liisi Eelmaa, Noolegrupp, Cnopt, Billeneeve, Mihkel Kleis, Sirli Hein, Maris Palgi, Minna Hint ja Jaanus Samma. Toimus 10 ühepäevast näitust, esitati 100 kunstikriitilist teksti
Rootsi otsib endiselt tundmatut objekti / Liisa Tagel

Index Scriptorium Estoniae

Tagel, Liisa

2014-01-01

Stockholmi saarestikus toimuvast Rootsi kaitseväe luureoperatsioonist, mille eesmärk on koguda infot võõrriigi allveetegevuse kohta. Võimalikku Vene allveelaeva märgati Rootsi vetes 17. oktoobril. Eestil puuduvad vahendid veealuse tegevuse jälgimiseks, seda suudetakse teha ainult koostöös NATO partneritega. Ahto Lobjakase arvamusartikkel Euroopa julgeolekupoliitilisest situatsioonist seoses Rootsi sündmustega, lk. 14
Muusika / Ia Remmel

Index Scriptorium Estoniae

Remmel, Ia, 1965-

2005-01-01

Eesti Muusikanõukogu žürii valis välja muusikapreemia laureaadid. 5. - 8. X toimub Eesti Muusikaakadeemias Sügisfestival. Flöödimängija Jaan Õun saanuks 1. X 60. aastaseks. Lepo Sumera Ühing ja EFK esitlevad EMA kammersaalis Lepo Sumera uut plaati "Mushroom Cantata". Anna-Liisa Bezrodny sai Londoni Sümfooniaorkestri väljapaistva noore muusiku aastapreemia. Neeme Järvil uus orkester - Haagi Residentieorkester Hollandis. Vanemuises etendub Mozarti ooper "Võluflööt"
Abramović perifeerias / Kaire Nurk

Index Scriptorium Estoniae

Nurk, Kaire, 1960-

2011-01-01

Kaasaegse kunsti festivali "Art ist kuku nu ut" näitused: "Art Must Be Beautiful. Marina Abramovići valitud teosed" (kuraator Rael Artel) Tartu Kunstimuuseumis 13. nov.-ni, saksa kuraatorite Kathrin Meyeri ja Ellen Blumensteini kuraatorinäitus "Keeldumised" Tartu Kunstimajas 16. okt.-ni, Anna Hintsi, Eva Labotkini, Marja-Liisa Platsi ja Toomas Thetloffi näitus "Tartust ära" Y-galeriis 30. okt.-ni. Babette Mangolte'i film "Marina Abramovići "Seitse lihtsat teost"" kinos Athena
"Avamaa" ehk Kuidas kasutada ära meie maaelu võimalusi? / Evelyn Müürsepp

Index Scriptorium Estoniae

Müürsepp, Evelyn

2008-01-01

Kunstisümpoosion "Avamaa" Mooste Kunsti- ja Sotsiaalpraktika Keskuses 18.-23. VIII. Tero Nauha, Siim Angerpiku, rühmituse Lahe Atmosfäär, Patrick McGinley ja John Grzinichi kureeritud töötubadest. 23. VIII eksperimentaalse folkmuusika kontserdil "Mesi kõrvadele" esinesid Launau, Lauhkeat Lampaat ja Kuupuu Soomest, Michele Spanghero Itaaliast, Riho Kall, Vaikuse Koosolek (Anna Hints, Helen Kõmmus, Maria Rõhu, Marja-Liisa Plats, Tanel Kaupan), Mari Kalkun ja Tanel Kadalipp Eestist ning Bernu Rits Lätist
ERITYISTÄ TUKEA TARVITSEVA LAPSI VUOROHOIDOSSA : keinoja ja välineitä tukea esiopetusikäistä lasta

OpenAIRE

Soini, Liisa

2013-01-01

TIIVISTELMÄ Liisa Soini. Erityistä tukea tarvitseva lapsi vuorohoidossa, keinoja ja välineitä tukea esiopetusikäistä lasta. kevät 2013, 54s.Diakonia ammattikorkeakoulu, Sosiaalialan koulutusohjelma, sosionomi(AMK). Opinnäytetyön tarkoituksena oli kartoittaa, millainen oli vuorohoidon työntekijän käsitys erityistä tukea tarvitsevasta lapsesta. Miten päivähoito voi vastata erityistä tukea tarvitsevan lapsen tarpeisiin ja millaisia haasteita erityisen tuen tarve toi osaamise...
Eesti läheb Pekingisse / Karin Hallas-Murula

Index Scriptorium Estoniae

Hallas-Murula, Karin, 1957-

2008-01-01

Pekingi Eesti saatkonnahoone konkursist žüriiliikme pilguga. Premeeritud ja esiletõstetud töödest. Võidutöö autorid - Lauri Vaimel, Andres Põime, Liisa Põime; II koht - Erik Nobel ja Nobel Arkitekten, Taani-Eesti; III koht - Kalle Vellevoog, Velle Kadalipp, Tiiu Truus, Martin Prommik; ostudega esiletõstetud tööde autorid - Priit Pent ja Raul Järg Bucoma OÜ-st ning Jan Skolimowski, Peeter Loo, Kaspar Kruuse ja Li Vene KAMP Arhitektide OÜ-st. Hiina ja Pekingi uusehitistest, arhitektidest
Üleminekuga kaduma või üle läinud? / Andri Ksenofontov

Index Scriptorium Estoniae

Ksenofontov, Andri, 1962-

2011-01-01

Näitus "Lost in Transition" Eesti Kaasaegse Kunsti Muuseumis 28. aug.-ni 2011, kuraator Rael Artel. Gergely László ja Katarina Ševići, Katarina Zdjelari, Flo Kasearu, Wojtek Doroszuki, Ivan Jurica, Anna-Stina Treumundi, Arnis Balčuse, Aleksei Gordini, Zampa di Leone töödest. Liisa Kruusmäe näitus "Pealtkuulatud lood" 11.-23. juulini ning Karl-Kristjan Nageli ja Tiiu Rebase näitus "Kohtucase - Epic Winning" Draakoni Galeriis 25.07.-6.08.2011
People, art and the human environment / Laura Kuusk

Index Scriptorium Estoniae

Kuusk, Laura, 1982-

2009-01-01

Tutvustatakse Eestis toimunud kunstiprojekte, mis on seotud kunstipraktika, igapäevase elu, inimsuhete ja avaliku ruumiga. Sirja-Liisa Vahtra ja Otto von Buschi kunstiprojektist (2004), Martin Pääsukese plakatitest "Vabadus" linnaruumis (2008), Ave Teeääre ja Kertu Ehala projektist "Painting Club" Ravila hooldekodus (2007), rühmituse Johnson&Johnson "Paldiski projektist" (2006-2008), Riin Kranna-Rõõsi ja Eve Arpo projektist "Päev ilma mobiilita". Kunstnikest, kes on dokumenteerinud Tallinnas toimunud aktsioone. Kunsti ja sotsiaalset praktikat ühendavatest institutsioonidest (kultuuritehas Polymer, Kultuurikatel, Linnalabor jt.)
3-DIMENSIONAL Numerical Modeling on the Combustion and Emission Characteristics of Biodiesel in Diesel Engines

Science.gov (United States)

Yang, Wenming; An, Hui; Amin, Maghbouli; Li, Jing

2014-11-01

A 3-dimensional computational fluid dynamics modeling is conducted on a direct injection diesel engine fueled by biodiesel using multi-dimensional software KIVA4 coupled with CHEMKIN. To accurately predict the oxidation of saturated and unsaturated agents of the biodiesel fuel, a multicomponent advanced combustion model consisting of 69 species and 204 reactions combined with detailed oxidation pathways of methyl decenoate (C11H22O2), methyl-9-decenoate (C11H20O2) and n-heptane (C7H16) is employed in this work. In order to better represent the real fuel properties, the detailed chemical and thermo-physical properties of biodiesel such as vapor pressure, latent heat of vaporization, liquid viscosity and surface tension were calculated and compiled into the KIVA4 fuel library. The nitrogen monoxide (NO) and carbon monoxide (CO) formation mechanisms were also embedded. After validating the numerical simulation model by comparing the in-cylinder pressure and heat release rate curves with experimental results, further studies have been carried out to investigate the effect of combustion chamber design on flow field, subsequently on the combustion process and performance of diesel engine fueled by biodiesel. Research has also been done to investigate the impact of fuel injector location on the performance and emissions formation of diesel engine.
Computer analysis of sound recordings from two Anasazi sites in northwestern New Mexico

Science.gov (United States)

Loose, Richard

2002-11-01

Sound recordings were made at a natural outdoor amphitheater in Chaco Canyon and in a reconstructed great kiva at Aztec Ruins. Recordings included computer-generated tones and swept sine waves, classical concert flute, Native American flute, conch shell trumpet, and prerecorded music. Recording equipment included analog tape deck, digital minidisk recorder, and direct digital recording to a laptop computer disk. Microphones and geophones were used as transducers. The natural amphitheater lies between the ruins of Pueblo Bonito and Chetro Ketl. It is a semicircular arc in a sandstone cliff measuring 500 ft. wide and 75 ft. high. The radius of the arc was verified with aerial photography, and an acoustic ray trace was generated using cad software. The arc is in an overhanging cliff face and brings distant sounds to a line focus. Along this line, there are unusual acoustic effects at conjugate foci. Time history analysis of recordings from both sites showed that a 60-dB reverb decay lasted from 1.8 to 2.0 s, nearly ideal for public performances of music. Echoes from the amphitheater were perceived to be upshifted in pitch, but this was not seen in FFT analysis. Geophones placed on the floor of the great kiva showed a resonance at 95 Hz.
Kodumaise ruladisaini uuestisünd / Anna-Liisa Villmann

Index Scriptorium Estoniae

Villmann, Anna-Liisa

2010-01-01

Elukutselise rulasõitja, neljakordse Soome meistri Kristel Orasmäe loodud kaubamärgist High Fly, mille kujunduse tegi Eesti Kunstiakadeemias graafilise disaini osakonnas õppiv Taavi Drell. Toodang tellitakse välismaisest tehasest. High Fly rulakomplekti rahvusvahelisele turule viimise plaanidest, kevadel avatud rulakoolist, mille tulu läheb uue rulapargi rajamiseks
Vastutada lustides ja vastupidi / interv. Eva-Liisa Linder

Index Scriptorium Estoniae

2006-01-01

Lavakunstikooli XXII lend räägib kooliajast, õpetajatest ja õppetööst. Kõnelevad Mihkel Kabel, Martin Kõiv, Risto Kübar, Lauri Lagle, Tõnn Lamp, Mari-Liis Lill, Markus Luik, Ragne Pekarev, Laura Peterson, Ursula Ratasepp, Inga Salurand, Veiko Tubin, Nero Urke, Britta Vahur ja Sergo Vares

Mis ikkagi teeb Eestist Uganda? / Marja-Liisa Alop

Index Scriptorium Estoniae

Alop, Marja-Liisa

2006-01-01

Eesti üliõpilaskondade liidu juhatuse aseesimees M.-L. Alop kirjutab vastuse M. Heidmetsa artiklile 6. jaan. Eesti Päevalehes "Eestis nagu Ugandas", kus tõstatati Eestis üldise õppemaksu kehtestamise vajadus, mis vähendab vähem kindlustatute võimalusi kõrgharidust omandada
Kuidas Tallinnas ajalugu eksponeerida?

Index Scriptorium Estoniae

2002-01-01

Valimisdebatt: Tallinna ajaloolised väärtused on loendamatud. Aga kõigest me ei tea ja kõigest ei tahagi teada. Pealinn seisab valikute ees, mida ajaloost võtta, mida jätta. Oma nägemuse esitavad Robert Vill, Küllo Arjakas, Rein Lang, Vjatsheslav Ivanov, Mart Meri, Ando Keskküla, Liisa Pakosta. Autor: ERL (R. Vill). Autor: Keskerakond (K. Arjakas). Autor: Reformierakond (R. Lang). Autor: Rahvaerakond Mõõdukad (M. Meri). Autor: EÜRP (V. Ivanov). Autor: Res Publica (A. Keskküla). Autor: Isamaaliit (L. Pakosta). Parlamendisaadik (M. Meri, K. Arjakas)
Londoni maalipalavik / Jaan Elken

Index Scriptorium Estoniae

Elken, Jaan, 1954-

2010-01-01

Inglise kunstniku Damien Hirsti kolmest maalinäitusest. Michael Landy kuraatoriprojektist "Art Bin" South London Gallerys. Kunstnik Mark Rothkost rääkiva John Logani näidendi "Red" ("Punane") lavastusest Donmar Warehouse'is ja 2009 a. jaanuaris lõppenud Mark Rothko tööde näitusest Tate Modernis. Manchesteris sündinud mustanahalise kunstniku Chris Ofili retrospektiivist Tate Britainis. Näitusest "The Real Van Gogh" Royal Academy of Arts'is
A Comprehensive Model of the Dry Desulphurisation Process Une modélisation non empirique du procédé de désulfuration par voie sèche

Directory of Open Access Journals (Sweden)

Flament P.

2006-11-01

Full Text Available Due to the high investment cost of the wet scrubbing, the dry desulphurisation process remains an attractive way to remove sulphur dioxide when reduction level should not be higher than 90%. In this technique, the SO2 is removed from flue gases by direct injection of small calcium based sorbents such as calcium carbonate (CaCO3 or calcium hydroxide (Ca(OH² . The sorbent is first transformed into calcium oxide (CaO before reacting with SO2 to form a stable calcium sulphate (CaSO4. Although the global reactions are rather simple, a full description of the mechanism requires the knowledge of both, the initial physical properties of the sorbent and the evolution of these properties during the reaction. Furthermore, the way how particles are injected and dispersed into the SO2 containing gases is also a major issue of the dry desulphurisation process. Both aspects are considered in this paper since a specialised routine was build to describe the calcination-sulphation process and coupled with the KIVA code to perform 3D calculations under real industrial conditions. The desulphurisation model was first tested alone using the kinetic data of the International Flame Research Foundation and then, coupled with KIVA to simulate the desulphurisation process in a new type of boiler which is developed by BABCOCK Entreprise and the Institut Français du Pétrole (the AUDE boiler. In this last case, the objective was to determine the sorbent injection locations leading to the highest desulphurisation efficiencies. As the dispersion of particles is an important parameter of the desulphurisation process, an example of validation of the KIVA dispersion model is also presented in this paper. For the selected test case, i. e: particle dispersion in a plane mixing layer, a good agreement was found between the experimental results of Ando et al (1990 and the calculations performed with KIVA. Par suite du coût d'investissement très élevé du procédé de lavage
Modeling the effects of auxiliary gas injection and fuel injection rate shape on diesel engine combustion and emissions

Science.gov (United States)

Mather, Daniel Kelly

1998-11-01

The effect of auxiliary gas injection and fuel injection rate-shaping on diesel engine combustion and emissions was studied using KIVA a multidimensional computational fluid dynamics code. Auxiliary gas injection (AGI) is the injection of a gas, in addition to the fuel injection, directly into the combustion chamber of a diesel engine. The objective of AGI is to influence the diesel combustion via mixing to reduce emissions of pollutants (soot and NO x). In this study, the accuracy of modeling high speed gas jets on very coarse computational grids was addressed. KIVA was found to inaccurately resolve the jet flows near walls. The cause of this inaccuracy was traced to the RNG k - ɛ turbulence model with the law-of-the-wall boundary condition used by KIVA. By prescribing the lengthscale near the nozzle exit, excellent agreement between computed and theoretical jet penetration was attained for a transient gas jet into a quiescent chamber at various operating conditions. The effect of AGI on diesel engine combustion and emissions was studied by incorporating the coarse grid gas jet model into a detailed multidimensional simulation of a Caterpillar 3401 heavy-duty diesel engine. The effects of AGI timing, composition, amount, orientation, and location were investigated. The effects of AGI and split fuel injection were also investigated. AGI was found to be effective at reducing soot emissions by increasing mixing within the combustion chamber. AGI of inert gas was found to be effective at reducing emissions of NOx by depressing the peak combustion temperatures. Finally, comparison of AGI simulations with experiments were conducted for a TACOM-LABECO engine. The results showed that AGI improved soot oxidation throughout the engine cycle. Simulation of fuel injection rate-shaping investigated the effects of three injection velocity profiles typical of unit-injector type, high-pressure common-rail type, and accumulator-type fuel injectors in the Caterpillar 3401 heavy
An Archaeological Survey of the Galisteo Dam and Reservoir Area Santa Fe County, New Mexico.

Science.gov (United States)

1982-01-01

earliest in situ remains of this tradition are those of the Jay Phase (5500-480O--T; these remains bear little resemblance to those of the Paleo-Indian...Pueblo occupa- tion as an in situ development must account for the occupational hiatus that occurred in the Galisteo Basin and elsewhere...a plaza area containing a kiva. Walls were coursed adobe with cobble footings, or else of masonry. Dominant pottery at the Wheeler Site was Agua Fria
Kutsealase väljaõppega tegelev AEL Eestis / Leila Pärtelpoeg

Index Scriptorium Estoniae

Pärtelpoeg, Leila, 1927-

1998-01-01

Soome Ammatti Edistys Liitto (AEL) korraldas 1995.-1998. a. Tartu Kunstikooli juures kunsti- ja ehituskoolide õpetajatele restaureerimisalase koolituse, mille viisid läbi Maija-Liisa Hirvi, Leena Hakli, Juta Jokinen. Kursusest, praktikast 1996-1998. Marmoreerimiseks valiti Palmse supelmaja (ehitatud 1980, projekt Aarne Kann). Vinjetid kuppelsaali eesruumidesse maalis Eve Erman. Kohvik avati 1998. a. mais. Illusoorsete seinamaalingute loomisest Järlepa mõisa 1997. a., teema valikust lähtuvalt Järlepaga seotud A. J. von Krusensternist. Gravüüride valik - Kai Tuvik. Objektide sisearhitekt Leila Pärtelpoeg. Käsitsimaalitud tapeedid valmistatakse Järlepa Hiina salongi augustis 1998
Changing the Tooth-to-Tail Ratio Using Robotics and Automation to Beat Sequestration

Science.gov (United States)

2015-10-01

operations on bases. A Near-Term Possibility As a thought experiment, after imagining a system with the capabilities of KIVA, BAXTER, and a self - driving car ...pounds; moreover, it has a 4x4 drive and can move at 12 miles per hour for 12 hours, using sensors to avoid collisions. The robot is programmable... Driverless Cars in the Near Future for Fort Bragg,” fayobserver.com, 30 April 2015, http://www.fayobserver.com/military/ driverless - cars -coming-to-fort
Tom Russell: "Õpetajakoolitust tuleks alustada praktikast" / Liisa Lumiste

Index Scriptorium Estoniae

Lumiste, Liisa

2013-01-01

Eduko programmi raames Tallinna Ülikoolis toimunud avalikul loengul rääkis Kanada kasvatusteadlane Tom Russell praktika tähtsusest õpetajakoolituses ja viis läbi meistriklassi õpetajakoolituse õppejõududele
Johani ja Anna-Liisa vana valge / Agneta Land-Koskinen

Index Scriptorium Estoniae

Land-Koskinen, Agneta

2007-01-01

Renoveeritud vanas majas asuv korter, kus seinad on valged, mis on antiiksetele esemetele ja huvitavatele disainileidudele parimaks taustaks. Kultusobjektideks valgustid, nende hulgas ka Verner Pantoni ja Louis Poulseni loomingut
An Analysis of European Online micro-lending Websites

OpenAIRE

Arvind Ashta; Djamchid Assadi

2009-01-01

Purpose of the paper: With the development of web 2.0, a new kind on lending is taking place on the internet, termed peer to peer lending or social lending. In Europe, this includes commercial lending websites such as Zopa, smava, boober, Kokos, Monetto. At the same time, following the lead of Kiva in the US, European microcredit web platforms are coming up including MyC4 and Babyloan in Europe. The paper examines how the legal design of the online websites differs from the microcredit websit...
Large eddy simulation of spray and combustion characteristics with realistic chemistry and high-order numerical scheme under diesel engine-like conditions

International Nuclear Information System (INIS)

Zhou, Lei; Luo, Kai Hong; Qin, Wenjin; Jia, Ming; Shuai, Shi Jin

2015-01-01

Highlights: • MUSCL differencing scheme in LES method is used to investigate liquid fuel spray and combustion process. • Using MUSCL can accurately capture the gas phase velocity distribution and liquid spray features. • Detailed chemistry mechanism with a parallel algorithm was used to calculate combustion process. • Increasing oxygen concentration can decrease ignition delay time and flame LOL. - Abstract: The accuracy of large eddy simulation (LES) for turbulent combustion depends on suitably implemented numerical schemes and chemical mechanisms. In the original KIVA3V code, finite difference schemes such as QSOU (Quasi-second-order upwind) and PDC (Partial Donor Cell Differencing) cannot achieve good results or even computational stability when using coarse grids due to large numerical diffusion. In this paper, the MUSCL (Monotone Upstream-centered Schemes for Conservation Laws) differencing scheme is implemented into KIVA3V-LES code to calculate the convective term. In the meantime, Lu’s n-heptane reduced 58-species mechanisms (Lu, 2011) is used to calculate chemistry with a parallel algorithm. Finally, improved models for spray injection are also employed. With these improvements, the KIVA3V-LES code is renamed as KIVALES-CP (Chemistry with Parallel algorithm) in this study. The resulting code was used to study the gas–liquid two phase jet and combustion under various diesel engine-like conditions in a constant volume vessel. The results show that using the MUSCL scheme can accurately capture the spray shape and fuel vapor penetration using even a coarse grid, in comparison with the Sandia experimental data. Similarly good results are obtained for three single-component fuels, i-Octane (C8H18), n-Dodecanese (C12H26), and n-Hexadecane (C16H34) with very different physical properties. Meanwhile the improved methodology is able to accurately predict ignition delay and flame lift-off length (LOL) under different oxygen concentrations from 10% to 21
Regenerative engineering

CERN Document Server

Laurencin, Cato T

2013-01-01

Regenerative Engineering: The Future of Medicine Saadiq F. El-Amin III , MD , PhD; Joylene W.L. Thomas, MD ; Ugonna N. Ihekweazu, MD ; Mia D. Woods, MS; and Ashim Gupta, MSCell Biology Gloria Gronowicz, PhD and Karen Sagomonyants, DMDStem Cells and Tissue Regeneration Kristen Martins-Taylor, PhD; Xiaofang Wang, MD , PhD; Xue-Jun Li, PhD; and Ren-He Xu, MD , PhDIntroduction to Materials Science Sangamesh G. Kumbar, PhD and Cato T. Laurencin, MD , PhDBiomaterials A. Jon Goldberg, PhD and Liisa T. Kuhn, PhDIn Vitro Assessment of Cell-Biomaterial Interactions Yong Wang, PhDHost Response to Biomate
The Components of Non-Punitive Environment in Nursing

Directory of Open Access Journals (Sweden)

Sepp Jaana

2017-11-01

Full Text Available In nursing homes, managers need to create work environment which considers patient’s and worker’s needs and helps the organization to respond to a complicated and changing environment. The aim of the study is to investigate the influence of working environment on care workers’ safe behavior. We used KIVA questionnaire (characterizes the wellbeing workers. Our study reveals that in order to create the blame-free culture and non-punitive environment, the managers should pay attention to several factors: commitment, communication, leadership, collaboration, teamwork and learning.
Herramientas de software de simulación para redes de comunicaciones

OpenAIRE

Torres, Juan Antonio

2015-01-01

Actualmente los sistemas de computación y redes de comunicación son parte esencial del funcionamiento de las empresas, y una de las tareas más importantes, de los diseñadores de redes. El estudio del desempeño de las redes de comunicaciones a través de la simulación es una forma de abordar estas redes de comunicaciones. Las herramientas de simulación vista son: NetSim, Jimsim, KivaNS, Network Simulator, OMNET ++, Packet Tracer, OPNET Modeler, RouterSim Network Simulators, Toggit y ...
The KiVa antibullying curriculum and outcome: Does fidelity matter?

NARCIS (Netherlands)

Haataja, A.; Voeten, M.J.M.; Boulton, A.J.; Ahtola, A.; Poskiparta, E.H.; Salmivalli, C.

2014-01-01

Research on school-based prevention suggests that the success of prevention programs depends on whether they are implemented as intended. In antibullying program evaluations, however, limited attention has been paid to implementation fidelity. The present study fills in this gap by examining the
"Kiva, keltainen ja bussi" : yhteisöllisyyden kokemuksia Hubu-virtuaalibussissa

OpenAIRE

Aspegren, Piia

2012-01-01

Hubu-virtuaalibussi oli silloisen Elämä On Parasta Huumetta ry:n, nykyisen Ehkäisevä päihdetyö EHYT ry:n, virtuaalinen bussi, jossa keskusteltiin nuoren elämään liittyvistä asioista aikuisen johdolla. Hubu-bussi sijaitsi Habbo Hotelissa, joka on virtuaalimaailma Internetissä. Elämä On Parasta Huumetta ry ehti toteuttaa ehkäisevää päihdetyötä Habbo Hotelissa kymmenen vuoden ajan vuosina 2002–2012. Opinnäytetyössäni halusin selvittää, tunsivatko Hubussa käyvät nuoret yhteisöllisyyttä. Haast...
Tugevad naised on tagasi / Naomi Wolf ; tõlk. Liisa Past

Index Scriptorium Estoniae

Wolf, Naomi

2008-01-01

Autor arutleb, miks valis Barack Obama riigisekretäriks Hillary Clintoni. Autor nimetab H. Clintoni üheks vaieldamatuks saavutuseks tema maailmas tehtud rännakuid, kus ta on keskendunud naistele olulistele teemadele
USA armee uus digitaalmustriline välivorm / Liisa Mäemets

Index Scriptorium Estoniae

Mäemets, Liisa

2005-01-01

Ameeriklaste uue mustriga sõdurite universaalsest välivormist, mis võimaldab sulanduda metsa-, kõrbe- kui ka linnakeskkonda. Kommenteerib kaitseväe peastaabi logistikaosakonna ülem Raivo Tamm. Art. on koost. internetiallikate põhjal
Lõbusa eeskavaga Oktoberfest Lakewoodis / Priit Parming ; fotod: Liisa-Mai Karuks

Index Scriptorium Estoniae

Parming, Priit

2012-01-01

22. septembril kogunes paarisajaliikmeline eestlaste, lätlaste ja leedulaste pere Lakewoodi Eesti Ühingu maa-alale, nautima ilusat ilma ja hubast meeleolu ühingu poolt korraldatud Balti kallakuga Oktoberfestil

Satasen vauhtia eteenpäin / Marja-Liisa Rönkkö

Index Scriptorium Estoniae

Rönkkö, Marja-Liisa

2009-01-01

Muuseumide tegevusega seotud probleemidest Soomes. Eesti Rahva Muuseumi asutamise ajaloost, kogudest. Museaalide säilitamisest hoidlates. Muuseumide koostööst, näituste korraldamisest. Muuseumidele pandud ülesannetest
Evaluation of Water Injection Effect on NO(x) Formation for a Staged Gas Turbine Combustor

Science.gov (United States)

Fan, L.; Yang, S. L.; Kundu, K. P.

1996-01-01

NO(x) emission control by water injection on a staged turbine combustor (STC) was modeled using the KIVA-2 code with modification. Water is injected into the rich-burn combustion zone of the combustor by a single nozzle. Parametric study for different water injection patterns was performed. Results show NO(x) emission will decrease after water being injected. Water nozzle location also has significant effect for NO formation and fuel ignition. The chemical kinetic model is also sensitive to the excess water. Through this study, a better understanding of the physics and chemical kinetics is obtained, this will enhance the STC design process.
Intake flow modeling in a four stroke diesel using KIVA3

Science.gov (United States)

Hessel, R. P.; Rutland, C. J.

1993-01-01

Intake flow for a dual intake valved diesel engine is modeled using moving valves and realistic geometries. The objectives are to obtain accurate initial conditions for combustion calculations and to provide a tool for studying intake processes. Global simulation parameters are compared with experimental results and show good agreement. The intake process shows a 30 percent difference in mass flows and average swirl in opposite directions across the two intake valves. The effect of the intake process on the flow field at the end of compression is examined. Modeling the intake flow results in swirl and turbulence characteristics that are quite different from those obtained by conventional methods in which compression stroke initial conditions are assumed.
Numerical simulation of fuel sprays and combustion in a premixed lean diesel engine; Kihaku yokongo diesel kikan ni okeru nenryo funmu to nensho no suchi simulation

Energy Technology Data Exchange (ETDEWEB)

Miyamoto, T; Harada, A; Sasaki, S; Shimazaki, N; Hashizume, T; Akagawa, H; Tsujimura, K

1997-10-01

Fuel sprays and combustion in a direct injection Premixed lean Diesel Combustion (PREDIC) engine, which can make smokeless combustion with little NOx emission, is studied numerically. Numerical simulation was carried out by means of KIVA II based computer code with a combustion submodel. The combustion submodel describes the formation of combustible fuel vapor by turbulent mixing and four-step chemical reaction which includes low temperature oxidation. Comparison between computation and experiment shows qualitatively good agreement in terms of heat release rate and NO emission. Computational results indicate that the combustion is significantly influenced by fuel spray characteristics and injection timing to vary NO emission. 10 refs., 8 figs., 1 tab.
Archaeoastronomy in the New World

Science.gov (United States)

Aveni, Anthony F.

2010-01-01

List of contributors; 1. Introduction A. F. Aveni; 2. Archaeoastronomy in the Maya region A. F. Aveni; 3. Historical archaeoastronomy: the Hopi example S. C. McCluskey; 4. The Sidereal Lunar Calendar of the Incas R. T. Zuidema; 5. Astronomical norms in Mesoamerican rituals and time-reckoning G. Brotherston; 6. Astronomical knowledge and its uses at Bonampak, Mexico F. G. Lounsbury; 7. Lunar markings of Fajada Butte, Chaco Canyon A. Sofaer, R. M. Sinclair and L. E. Doggett; 8. The Skidi Pawnee earth lodge as an observatory V. D. Chamberlain; 9. Caldendrical petroglyphs of Northern Mexico W. B. Murray; 10. Casa Rinconada, twelfth-century Anasazi Kiva R. A. Williamson.
Computer Networks E-learning Based on Interactive Simulations and SCORM

Directory of Open Access Journals (Sweden)

Francisco Andrés Candelas

2011-05-01

Full Text Available This paper introduces a new set of compact interactive simulations developed for the constructive learning of computer networks concepts. These simulations, which compose a virtual laboratory implemented as portable Java applets, have been created by combining EJS (Easy Java Simulations with the KivaNS API. Furthermore, in this work, the skills and motivation level acquired by the students are evaluated and measured when these simulations are combined with Moodle and SCORM (Sharable Content Object Reference Model documents. This study has been developed to improve and stimulate the autonomous constructive learning in addition to provide timetable flexibility for a Computer Networks subject.
Kutseõppeasutuste õpetajad = Pedagogues of vocational education institutions / Tiiu-Liisa Rummo

Index Scriptorium Estoniae

Rummo, Tiiu-Liisa

2007-01-01

Eesti lähituleviku eesmärgiks on motiveerida kutsehariduse pedagooge ja spetsialiste kutseharidussüsteemis töötama. Kutseõppeasutuste pedagoogid vanuserühma, soo, ametijärgu ja haridusastme järgi. Lisatud diagramm ja tabelid
The professional growth of an accounting agency entrepreneur / Marja-Liisa Tenhunen

Index Scriptorium Estoniae

Tenhunen, Marja-Liisa

2004-01-01

Sotsiaalset muutust mõjutavate megatrendide peegeldumisest raamatupidamisbüroode professionaalsuse kasvus, kompetentsuse ning õppimisvajaduse avaldumisest büroode tegevuses, raamatupidamisettevõtjate teadmiste ja oskuste taseme vastavusest kutsenõuetele. Uuringu aluseks on Soome ning Norra raamatupidamisbüroode süsteemi võrdlev analüüs. Tabelid. Skeemid
32. keskkoolis saab jälle teatriharidust / Liisa-Indra Kärt

Index Scriptorium Estoniae

Kärt, Liisa-Indra

2003-01-01

Alates sügisest saab 32. keskkoolis jälle õppida teatrieriala, 29.03 toimunud vastuvõtukatsetel osales 50 teatrihuvilist noort. Konkurss treatriklassi oli ootamatult tihe, teatriklass tegutses 32. koolis alates selle loomisest aastal 1971-1980
Oma ala meistriks saab igaüks isemoodi / Anna-Liisa Mets

Index Scriptorium Estoniae

Mets, Anna-Liisa

2014-01-01

Selgusid kutsemeistrivõistluse "Noor meister 2014" parimad. Edukalt esinenud õppurid meisterkondiiter Helen Laht, ehituspuussepp Mirko Pruus, logistik Karl-Erik Maripuu, keskkonnatehnika lukksepp Robert Born, elektrik Tiit Talts ja müürsepp Sander Hindrikus räägivad oma ametiõpingutest ja tulevikuplaanidest
Viiteid Barack Obama valitsusstiilile võib leida tema valimiskampaaniast / Liisa Past

Index Scriptorium Estoniae

Past, Liisa

2008-01-01

Autor on seisukohal, et nii Barack Obama võit kui ka John McCaini leppimine oma kaotusega olid selged juba paar nädalat enne valimisi. Kirjeldades J. McCaini kampaania lõppu, märgib autor, et B. Obama võidule aitas kaasa terav majanduskitsikus ja selgem kampaaniadistsipliin. Lisad
Aegumatu Rootsi klaas ja tundmatute disainerite kummalised ideed / Anna-Liisa Soomann

Index Scriptorium Estoniae

Soomann, Anna-Liisa

2007-01-01

Göteborgi disainipoodidest ja tuntud disaineritest nagu Josef Frank (1885-1967), Carl Malmsten (1888-1972), Bruno Mathsson (1907-1988), Jonas Bohlin (1953), Marten Claesson (1970), Eero Koivisto (1958), Ola Rune (1963), Pia Wallen (1957), Thomas Sandell (1959) ja Pia Törnell (1963)
Piirid jälle segi löödud / Liisa Kaljula

Index Scriptorium Estoniae

Kaljula, Liisa, 1982-

2015-01-01

Arvustus: Kurg, Andres. Boundary disruptions: Late-Soviet transformations in art, space and subjectivity in Tallinn 1968–1979 = [Segilöödud piirid: hilisnõukogude muutused kunstis, ruumis ja subjektsuses Tallinnas aastatel 1968-1979]. Tallinn : Eesti Kunstiakadeemia, 2014
Muusika / Priit Kuusk

Index Scriptorium Estoniae

Kuusk, Priit, 1938-

2005-01-01

Irina Zahharenkova võitis 11. IX esikoha Bukaresti XVII rahvusvahelisel pianistide konkursil "Remember Enescu". Vanemuise teater gastroleerib 15. - 17. IX Helsingis Soome Rahvusooperis tantsulavastusega "Armastuse tango" ja ooperiga "Madame Butterfly". Eesti Naislaulu Selts korraldab 17. IX mitu üritust emeriitprofessori koorijuht Ants Söödi 70. sünnipäeva tähistamiseks. MTÜ Tartumaa Rahvakultuuri Keskselts korraldab 17. ja 18. IX festivali "Regiöö". 21. IX esinevad Tartu ülikooli aulas kontserdisarjas "Meistrite akadeemia" Anna-Liisa Bezrodny ja Ivari Ilja. Anu Tali dirigeerib 9. - 18. IX taas Jaapanis. Agentuur Corelli Music avab koos Eesti Klavessiinisõprade Tsunftiga kontserdihooaja "Ajaloo ilu - Johann Sebastian Bach". Sibeliuse festivalist Lahtis. Paavo Järvi avab oma uue hooaja Cincinnati SO peadirigendina. Helsingin Sanomat avaldas pikema intervjuu Olari Eltsiga. Nargen Operalt kontsertetendus "Armida".
2016 KIVA-hpFE Development: A Robust and Accurate Engine Modeling Software

Energy Technology Data Exchange (ETDEWEB)

Carrington, David Bradley [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Waters, Jiajia [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

2016-10-25

Los Alamos National Laboratory and its collaborators are facilitating engine modeling by improving accuracy and robustness of the modeling, and improving the robustness of software. We also continue to improve the physical modeling methods. We are developing and implementing new mathematical algorithms, those that represent the physics within an engine. We provide software that others may use directly or that they may alter with various models e.g., sophisticated chemical kinetics, different turbulent closure methods or other fuel injection and spray systems.
"Se Pupuperhe-laulu oli kiva" : musiikki lapsen kasvun ja kehityksen tukena varhaiskasvatuksessa

OpenAIRE

Järvinen, Sari

2016-01-01

Opinnäytetyön tarkoituksena oli lisätä tietoa musiikin käyttömahdollisuuksista varhaiskasvatuksessa lasten kasvun ja kehityksen tukemisen välineenä. Tavoitteena oli luoda opas varhaiskasvattajille, josta he voivat tarpeen mukaan ottaa käyttöön valmiita menetelmiä. Oppaan menetelmät pyrin valitsemaan niin, että ne olisivat helppoja toteuttaa eikä vaatisi suuria esivalmisteluja. Opinnäytetyön toiminnallinen osuus koostui viidestä toimintatuokiosta, joissa testasin oppaan me...
Kutseharidus rahvusvahelises võrdluses = Vocational education in international comparison / Tiiu-Liisa Rummo

Index Scriptorium Estoniae

Rummo, Tiiu-Liisa

2007-01-01

Võrdluses teiste Euroopa Liidu liikmesriikidega iseloomustab Eestit madal osaluse määr kutsehariduses. EL-i 25 riigi poiste keskmine kutsekeskhariduses õppimise määr on 57%, Eestis 40%, tüdrukute osas on vastavad numbrid 54% ja 19%. Lisatud diagrammid
Endine USA sõdur : vihkan oma armeed / Canyon Porter ; interv. Liisa Past

Index Scriptorium Estoniae

Porter, Canyon

2007-01-01

Pärast 11. septembri terrorirünnakut armeega liitunud, Iraagis missioonil viibinud endine luurespetsialist räägib Abu Ghraibi vanglas toimunust ning armeest lahkumisest. Tema arvates poleks USA üldse pidanud Iraaki minema
Olemuse teater. Kantor ja Brook / Jan Kott ; tõlk. Eva-Liisa Linder

Index Scriptorium Estoniae

Kott, Jan

2004-01-01

T. Kantori lavastustest "Surnud klass" ja "Wielopole Wielopole" ning P. Brooki "Carmeni" lavastusest. Tõlgitud raamatust : Jan Kott. The Theatre of Essence: Kantor and Brook.- The Theatre of Essence and other Essays. Evanston, Northwestern University Press, 1984, lk. 159-165
Giles Merritt: Euroopa Liit vedas inimesi alt / Giles Merritt ; interv. Liisa Past

Index Scriptorium Estoniae

Merritt, Giles

2009-01-01

Mõttekoja Friends of Europe peasekretär eelseisvatest Euroopa Parlamendi valimistest, Tšehhist EL-i eesistujamaana, Euroopa Komisjoni vähesest aktiivsusest üleilmse majanduskriisi mõju vähendamisel, protektsionismist, EL-i Venemaa-poliitikast

Marketized philanthropy

DEFF Research Database (Denmark)

Bajde, Domen

2013-01-01

attention has been devoted to the ways in which the newly emergent philanthropic ideologies and practices are ‘marketed’ to and adopted by the broader audience of philanthropic givers. In response, we explore the ideological elements that make lending through Kiva, an emergent microfinance charity......As the impact of market actors and their doctrines on philanthropy gradually increases, the debate between the proponents and the critics of ‘marketization’ of philanthropy intensifies. Curiously, the debate has largely centred on ‘philanthrocapitalists’ and philanthropic professionals, while less......, meaningful to its creators and supporters. A combination of interpretive methods is used to outline Kiva’s ideology of entrepreneurial philanthropy. This utopian ideology is found to legitimize ‘marketized’ philanthropic practices by invoking alternative conceptions of poverty, social progress...
Numerical investigation on the effect of reactivity gradient in an RCCI engine fueled with gasoline and diesel

International Nuclear Information System (INIS)

Li, J.; Yang, W.M.; An, H.; Zhou, D.Z.; Yu, W.B.; Wang, J.X.; Li, L.

2015-01-01

Highlights: • A chemical reaction mechanism is newly developed for dual fuel combustion. • The developed chemical kinetics is coupled with KIVA4 to model the combustion. • The role of reactivity gradient in RCCI combustion is investigated. • The RCCI (dual fuel mode) combustion is compared with blend fuel mode. - Abstract: The reactivity controlled compression ignition (RCCI), which belongs to dual fuel mode (DFM) combustion has been considered as a promising way to achieve high fuel conversion efficiency and low emissions. By this strategy, a fuel reactivity gradient is formed in the combustion chamber which offers the probability of controlling combustion phasing. In this study, the role of fuel reactivity gradient was examined numerically by comparing a DFM (i.e., RCCI) combustion with other hypothetical cases under one specific load condition. Firstly, a chemical reaction mechanism was developed aiming at a modelling study on dual fuel and blend fuel combustion in internal combustion (IC) engines fueled by gasoline/diesel and gasoline/biodiesel. Ignition delays were validated for 100% diesel, 100% gasoline and 100% biodiesel under 102 conditions in total. Subsequently, the validated reaction mechanism which consists of 107 species and 425 reactions was implemented in coupled KIVA4-CHEMKIN code. Three dimensional validations were further conducted under 3 conditions including pure diesel combustion, and gasoline/diesel DFM combustion with both single and double injection strategies in the engine. To investigate the fuel reactivity gradient, the gasoline/diesel DFM combustion with single injection was compared with other three hypothetical cases, one of which was DFM without fuel reactivity gradient, two were the blend fuel mode but with different start of injection (SOI) timings. The results showed that the fuel reactivity gradient could retard the ignition timing, reduce heat release rate, and ease peak pressure rise rate. In addition, low levels of NO
Chemical Kinetic Study of Nitrogen Oxides Formation Trends in Biodiesel Combustion

Directory of Open Access Journals (Sweden)

Junfeng Yang

2012-01-01

Full Text Available The use of biodiesel in conventional diesel engines results in increased NOx emissions; this presents a barrier to the widespread use of biodiesel. The origins of this phenomenon were investigated using the chemical kinetics simulation tool: CHEMKIN-2 and the CFD KIVA3V code, which was modified to account for the physical properties of biodiesel and to incorporate semidetailed mechanisms for its combustion and the formation of emissions. Parametric ϕ-T maps and 3D engine simulations were used to assess the impact of using oxygen-containing fuels on the rate of NO formation. It was found that using oxygen-containing fuels allows more O2 molecules to present in the engine cylinder during the combustion of biodiesel, and this may be the cause of the observed increase in NO emissions.
10 000 arvamuse asemel kollektiivsed eelistused : intervjuu / Carolyn Lukensmeyer ; intervjueerinud Liisa Svenigsson Past

Index Scriptorium Estoniae

Lukensmeyer, Carolyn, 1945-

2010-01-01

Ameerika Ühendriikide kodanikuühenduse president ja asutaja selgitab, kuidas luua usaldusväärseid koostöösuhteid avlikkuse ja valitsusväliste ühenduste ning poliitikute ja valitsussüsteemi vahel
Mark Leonard : Venemaal on kinnisidee kontrollida ümbruskonda / Mark Leonard ; interv. Liisa Past

Index Scriptorium Estoniae

Leonard, Mark

2007-01-01

Euroopa välissuhete nõukogu juht vastab küsimustele, kas praeguse Euroopa konfliktid ja vastuolud ei õõnesta tema võimalust olla maailmas oluline jõud, kas Venemaast saab kunagi EL-i liige ja mille poolest ta Euroopast erineb, kas Hiina hakkab ka poliitikas silma paistmiseks jõudu koguma, milline on Hiina ja Venemaa tegelik eesmärk, miks on Hiina inimõiguste küsimus Euroopa aruteludest kadunud
Linnamaastike kaitse on osa arengust / Jukka Jokilehto, Mehr Azar Soheil ; intervjueerinud Liisa Pakosta

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Jokilehto, Jukka

2010-01-01

Vestlus soome arhitekti, Nova Gorica ülikooli professori, UNESCO ja ICOMOSi konsultandi Jukka Jokilehto ja tema abikaasa, pärslannast arhitekti Mehr Azar Soheiliga. Ka Tallinna vanalinnast maailmapärandi komitees valmivate linnamaastike kaitseks mõeldud soovituste valguses, linna arengust sadama suunas. Eestikeelsena ilmus J. Jokilehto raamat "Arhitektuuri konserveerimise ajalugu" (Tallinn : Eesti Kunstiakadeemia, 2010)
Endine Briti kaitseatašee Eestis : raiskajad tuleks vangi panna / Anna-Liisa Soomann

Index Scriptorium Estoniae

Soomann, Anna-Liisa

2007-01-01

Aastaid Eestis Suurbritannia kaitseatašeena töötanud ning hiljem kaitseministeeriumi nõustanud kolonelleitnant Glen Grant kritiseeris pärast Eestist lahkumist siinsete kaitsejõudude ülesehitust ning ametkondades levivat ressursside raiskamist. Lisa: Glen Grant. Vt. samas: Holger Roonemaa intervjuu Ants Laaneotsaga
Nigel Haywood: Eesti on hea uute ideede allikas / Nigel Haywood ; interv. Liisa Past

Index Scriptorium Estoniae

Haywood, Nigel, 1955-

2007-01-01

Ametist lahkuv Briti suursaadik Nigel Haywood oma diplomaadikarjäärist, euroskeptilistest britlastest, kuninganna Elisabeth II ja peaminister Tony Blairi visiitidest Eestisse, Suurbritannia ja Eesti sõjalisest koostööst, tulevasest tööst Iraagis Basras. Lisa: Eluloost
Edward Lucas : Eesti parim kaitse on kontrast Venemaaga / Edward Lucas ; interv. Liisa Past

Index Scriptorium Estoniae

Lucas, Edward

2008-01-01

The Economist Kesk- ja Ida-Euroopa korrespondent vastab küsimustele, mis puudutavad tema raamatut "Uus külm sõda", võimuvahetust Venemaal ja vene raha mõju maailmapoliitikale, USA uue administratsiooni Vene-poliitikat ning Eesti-Venemaa suhteid
Experimental and numerical investigation of sprays in two stroke diesel Engines

DEFF Research Database (Denmark)

Dam, Bjarke Skovgård

2007-01-01

. The latter is the subject of this dissertation. The theory and experimental findings on diesel sprays are investigated, including e.g. spray parameters and droplet break up. It is found that no complete theory is yet present and large challenges lie ahead. Generally, there is fairly good consensus on which......The control of the injected spray is important when optimizing performance and reducing emissions from diesel engines. The research community has conducted extensive research especially on smaller four stroke engines, but so far only little has been done on sprays in large two stroke engines...... have different scales and other designs than those used in the literature, so extending results from the literature will require experiments on this particular type of setup. Numerical investigations of diesel sprays are performed using the Eulerian/Lagrangian engine CFD code Kiva. In agreement...
"Se on kiva tunne kun onnistuin" : -Arviointitutkimus Supertytöt-leirin vaikutuksista osallistujien itsetuntoon

OpenAIRE

Rautama, Anu

2016-01-01

Tämä opinnäytetyö on tutkimus, joka toteutettiin Supertytöt-leirillä kesäkuussa 2016. Leirillä oli 16 osallistujaa, iältään 9-13 vuotta. Leirin järjesti Helsingin NNKY:n Debora-hanke. Tutkin opinnäytetyössäni sitä, vaikuttaako leiri tyttöjen perusitsetuntoon ja ilmapuntari-itsetuntoon. Lisäksi selvitin, mitkä leirin teemat ja toiminnot ovat niitä, jotka mahdollisesti itsetuntoon eniten vaikuttavat. Opinnäytetyöni teoriaperustan muodostivat itsetunnon ja itsetunnon mittaamisen sekä leiritoimin...
Tormi üleelamine pärast peoaastaid / Kristian Lau Nielsen ; tõlkinud Liisa Past

Index Scriptorium Estoniae

Nielsen, Kristian Lau

2009-01-01

Autor kritiseerib eelarvekärbete tegemist, märkides, et sisuliselt kõigi teiste arenenud riikide valitsused on pöördunud avalike kulutuste suurendamise poole, ning viidates majandusteadlaste seisukohtadele. Kärpele tuleks eelistada lühiajalist eelarvedefitsiiti ja laenamist
A numerical study on RCCI engine fueled by biodiesel/methanol

International Nuclear Information System (INIS)

Zhou, D.Z.; Yang, W.M.; An, H.; Li, J.; Shu, C.

2015-01-01

Highlights: • Numerical study is done to investigate RCCI engine fueled by biodiesel/methanol. • A new biodiesel/methanol dual-fuel chemical reaction mechanism is developed. • Engine performance is improved with fuel reactivity stratification formed. • Soot and NO x significant reduce with methanol induction and fuel reactivity stratification. - Abstract: A 3-D numerical simulation platform based on the KIVA4-CHEMKIN code was constructed by incorporating a newly developed skeletal chemical kinetics mechanism to study the reactivity controlled compression ignition (RCCI) engine performance, combustion and emission characteristics. In the present study, methanol is assumed to be induced into the engine through the intake port, while biodiesel is directly injected into the engine by the end of the compression stroke. The skeletal biodiesel and methanol dual fuel chemical reaction mechanism coupled with CO, NO x and soot formation mechanisms was developed and validated by comparing the ignition delay predicted by the developed mechanism with that of the detailed biodiesel and methanol mechanisms, and also by comparing the simulation results of KIVA-CHEMKIN with the experimental results under different engine operating conditions. A good agreement has been achieved in terms of ignition delay, in-cylinder pressure and heat release rate (HRR). The methanol mass fraction was varied from 0% to 80% at an interval of 20% to form different reactivity stratification. Simulation results revealed that under 10% load conditions, the increasing methanol reduced the peak pressure and heat release rate, whereas under 50% and 100% loads, the peak pressure both appeared at 60% methanol induction. Also, the reactivity distribution and ringing intensity were discussed, aiming at investigating the fuel gradient effects and knocking level, respectively. For the emissions, a general decreasing trend on CO emission was observed at both 50% and 100% loads while at 10% load, a slight
Effects of the KiVa Antibullying Program on Cyberbullying and Cybervictimization Frequency among Finnish Youth

Science.gov (United States)

Williford, Anne; Elledge, L. Christian; Boulton, Aaron J.; DePaolis, Kathryn J.; Little, Todd D.; Salmivalli, Christina

2013-01-01

Cyberbullying among school-aged children has received increased attention in recent literature. However, no empirical evidence currently exists on whether existing school-based antibullying programs are effective in targeting the unique aspects of cyberbullying. To address this important gap, the present study investigates the unique effects of…
The development of the mandative subjunctive in the Early Modern English period / Eva-Liisa Fillbrandt

Index Scriptorium Estoniae

Fillbrandt, Eva-Liisa

2006-01-01

Tingiva kõneviisi kasutusest varases moodsa inglise perioodis aastatel 1500-1700. Uurimus tõi välja kaks inglise keele varianti - varase moodsa inglise lõuna variandi ja vanema šoti inglise keele põhjavariandi
Modeling unburned hydrocarbon formation due to absorption/desorption processes into the wall oil film

International Nuclear Information System (INIS)

Shih, L.K.; Assanis, D.N.

1992-01-01

This paper reports that as a result of continuing air pollution problems, very stringent regulations are being enforced to control emissions of unburned hydrocarbons (HC) from premixed-charge, spark-ignition engines. A number of attempts have been reported on modeling sources of HC emissions using various analytical tools. Over the past decade, the development of multi-dimensional reacting flow codes has advanced considerably. Perhaps the most widely used multi-dimensional engine simulation code is KIVA-II, which was developed at Lost Alamos National Laboratory. The ability to deal with moving boundary conditions caused by the piston movement is built in this code. This code also includes models for turbulent fluid flow, turbulent interaction between spray drops and gas, heat transfer, chemical reaction, and fuel spray. A standard k-ε turbulence model is used for gas flow. The fuel spray model is based on the stochastic particle technique, and includes sub-models for droplet injection, breakup, collision and coalescence, and evaporation
The power of stars

CERN Document Server

Penprase, Bryan E

2017-01-01

Completely revised and updated, this new edition provides a readable, beautifully illustrated journey through world cultures and the vibrant array of sky mythology, creation stories, models of the universe, temples and skyscrapers that each culture has created to celebrate and respond to the power of the night sky. Sections on the archaeoastronomy of South Asia and South East Asia have been expanded, with original photography and new research on temple alignments in Southern India, and new material describing the astronomical practices of Indonesia, Malaysia and other Southeast Asian countries. Beautiful photographs of temples in India and Asia have been added, as well as new diagrams explaining the alignment of these structures and the astronomical underpinnings of temples within the Pallava and Chola cultures. From new fieldwork in the Four Corners region of North America, Dr. Penprase has included accounts of Pueblo skywatching and photographs of ceremonial kivas that help elucidate the rich astronomical k...
School-based interventions to address bullying

Directory of Open Access Journals (Sweden)

Peter K. Smith

2016-10-01

Full Text Available Following some background studies on the nature of school bullying, its prevalence, and the negative consequences it can have, this article reviews the history of anti-bullying interventions over the last 30 years. It considers several major programmes in detail, such as the Olweus Bullying Prevention Program, KiVa, Steps to Respect, and Friendly Schools. The nature and evaluation of the interventions is discussed, followed by a review of meta-analyses of the programmes effectiveness. Issues considered are the effect at different ages; components of interventions; work with peers; disciplinary methods, non-punitive and restorative approaches; challenges regarding cyberbullying; the role of parents; the role of teachers and teacher training; set menu versus à la carte approaches; sustainability of interventions and societal context. Conclusions show that interventions have had some success, with traditional bullying. However, further progress is needed in strengthening theoretical underpinnings to interventions, and in tackling cyberbullying.
Optimization of combustion chamber geometry for stoichiometric diesel combustion using a micro genetic algorithm

Energy Technology Data Exchange (ETDEWEB)

Park, Sung Wook

2010-11-15

This paper describes the optimization of combustion chamber geometry and engine operating conditions for stoichiometric diesel combustion, targeting lower gross indicated specific fuel consumption. The KIVA code, coupled with a micro genetic algorithm population of nine for each generation was used. The optimization variables were composed of ten variables related to the combustion chamber geometry and engine operating conditions. In addition, an auto mesh generator was developed for generating various kinds of combustion chambers, such as open-crater, re-entrant, deep, and shallow types. In addition, the computational models were validated against the experimental results for a stoichiometric process in terms of the combustion pressure history and emissions. Through the preset optimization, a 35% improvement in the gross indicated that specific fuel consumption was achieved. In addition, the optimization results showed that the optimum engine operating conditions employed a premixed charge compression ignition combustion regime with early injection and a narrow spray included angle. Furthermore, a higher boost pressure was used to prevent fuel film formation. (author)
Combustion performance, flame, and soot characteristics of gasoline–diesel pre-blended fuel in an optical compression-ignition engine

International Nuclear Information System (INIS)

Jeon, Joonho; Lee, Jong Tae; Kwon, Sang Il; Park, Sungwook

2016-01-01

Highlights: • Gasoline–diesel pre-blended fuel was investigated in an optical direct-injection diesel engine. • KIVA3V-CHEMKIN code modeled blended fuel spray and combustion with discrete multi-component model. • Flame and soot characteristics in the combustion chamber were shown by optical kits. • Combustion performance and soot emissions for gasoline–diesel blended fuel were discussed. - Abstract: Among the new combustion technologies available for internal combustion engines to enhance performance and reduce exhausted emissions, the homogeneous charge compression ignition method is one of the most effective strategies for the compression-ignition engine. There are some challenges to realize the homogeneous charge compression ignition method in the compression-ignition engine. The use of gasoline–diesel blended fuel has been suggested as an alternative strategy to take advantages of homogeneous charge compression ignition while overcoming its challenges. Gasoline and diesel fuels are reference fuels for the spark-ignition and compression-ignition engines, respectively, both of which are widely used. The application of both these fuels together in the compression-ignition engine has been investigated using a hybrid injection system combining port fuel injection (gasoline) and direct injection (diesel); this strategy is termed reactivity controlled compression ignition. However, the pre-blending of gasoline and diesel fuels for direct injection systems has been rarely studied. For the case of direct injection of pre-blended fuel into the cylinder, various aspects of blended fuels should be investigated, including their spray breakup, fuel/air mixing, combustion development, and emissions. In the present study, the use of gasoline–diesel pre-blended fuel in an optical single-cylinder compression-ignition engine was investigated under various conditions of injection timing and pressure. Furthermore, KIVA-3V release 2 code was employed to model the

Sugri error on nihe meie maailma ja realiteedi vahel / Anne Türnpuu ; intervjueerinud Eva-Liisa Linder

Index Scriptorium Estoniae

Türnpu, Anne, 1963-

2011-01-01

Tallinnas Põhuteatris 26. augustil esietenduvast lavastusest "Sugrierror.com", kus osalevad lisaks eestlastele handid, mansid, marid, udmurt ja seto. Lavastuse ettevalimistusperioodist ja nn. sugri temaatikast
Teater vajab ellujäämiseks värsket dramaturgiat / Jane Rasch ; vahendanud Eva-Liisa Linder

Index Scriptorium Estoniae

Rasch, Jane

2009-01-01

Taani teatriteadlane Jane Rasch õpetas 10.-14. augustini 2009 Viljandi Kultuuriakadeemias toimunud draamakirjutuskursusel "Ideedest näidendi stsenaariumini". Ka näitekirjanike koolitamisest Taanis jt. Põhjamaades
USA 2008 : maailma ilmselt mõjukaima mehe või naise valik sai hoo sisse / Liisa Past

Index Scriptorium Estoniae

Past, Liisa

2008-01-01

USA riigipea institutsiooni muutumisest. Autori sõnul on USA riigipea institutsioon võimsam kui kunagi varem ja pidevalt lisandunud uued rollid on muutunud selle lausa ohtlikult tugevaks. Kõige olulisemalt on viimase poole sajandi jooksul muutunud presidendi suhted kodumaise avalikkusega. Lisad: 2008. aasta USA presidendivalimised; Valimistsükkel
Jalgsi, rongi või jalgrattaga? Käsu korras või kokkuleppel? / Gregory Ashworth ; intervjueerinud Liisa Pakosta

Index Scriptorium Estoniae

Ashworth, Gregory

2011-01-01

Intervjuu Groningeni ülikooli ruumiteaduste instituudi planeeringute osakonna professori Gregori Ashworthiga. Kultuuriturismist, linnaplaneerija võimalustest aidata kaasa turismile, turismi edendamise võimalustest Tallinnas, transpordipoliitikast, ühistranspordist, rongi- ja jalgrattaliiklusest, maa-alusest parkimisest, Kalamajast, planeeritava piirkonna elanike soovidega arvestamisest, avalike huvide kaitsest jm.
Mis juhtus Andres Lapeteusega? : error'ist kõrgklassi homo soveticus'e näitel / Liisa Kaljula

Index Scriptorium Estoniae

Kaljula, Liisa, 1982-

2014-01-01

Autor analüüsib 2014. a. Tallinna Semiosalongi loengute sarja põhiteema - error'i mõiste avamiseks ühe inimliigi kujunemislugu - Eesti filmiklassikast tuntud tegelaskuju Andres Lapeteuse tõusu ning langust homo soveticus'ena
Kutseharidusega inimesed tööturul = People with vocational education in the labour market / Tiiu-Liisa Rummo

Index Scriptorium Estoniae

Rummo, Tiiu-Liisa

2007-01-01

Eesti tööealises rahvastikus on 2005. aasta tööjõu-uuringu andmetel kutse (keskeri-)haridusega inimesi 36,5% - mehi 48,6% ja naisi 51,4%, vähenemas on kutseharidusega inimeste töötuse määr. Lisatud tabelid ja diagrammid
Täiskasvanute õppimisvõimalused ja -valmidus = Adult education possibilities and readiness to study / Tiiu-Liisa Rummo-Laes

Index Scriptorium Estoniae

Rummo-Laes, Tiiu-Liisa

2009-01-01

Artiklis analüüsitakse Eesti ettevõtete koolitusvalmidust ja õppimisvõimaluste pakkumist ning 25-64-aastaste õppimisvalmidust. Kasutatud on nii 2005. aasta uuringu "Täiskasvanute koolitus ettevõtetes" kui ka 2007. aasta täiskasvanute koolituse uuringu andmeid
RANTAI NILAI PADA INDUSTRI SUSU STUDI KASUS PT CISARUA MOUNTAIN DAIRY (CIMORY

Directory of Open Access Journals (Sweden)

Reza Satrya Arjakusuma

2014-09-01

Full Text Available ABSTRACTThe purpose of this study were to 1 map the value chain of Cimory, 2 analyze value chain governance in Cimory, 3 identify the barriers in Cimory value chain, 4 analyze the production efficiency in Cimory suppliers, and 5 identify the best strategy to upgrade the Cimory’s value chain so it can minimize any hindrance. This research used descriptive method that used value chain analysis, value chain governance analysis, barrier of production efficiency identification, and upgrading strategy. Based on value chain analysis, there are six actors in the whole Cimory value chain: KUD Giri Tani and KUD Cipanas as the dairy suppliers, Kiva Citra as the sugar supplier, Inopec as the bottle supplier, Cimory itself, Macrosentra Niagaboga as the main distributor, Cimory resto, Giant, Indomaret, Alfamart, Home Delivery, and Cimory agent. The relationship between Cimory and the main supplier is captive, between Cimory and secondary supplier is modular, and between Cimory and the distributor is more likely modular. The results of barriers identification showed that almost all barriers came from the main suppliers. The results from the production efficiency showed that only the working hour that didn’t have any positive effect for production. The prioritized strategy that needs to be done based on the upgrading analysis is improving the quality of fresh milk supplied to Cimory.Keywords: cimory, production efficiency, upgrading strategy, value chain, value chain analysis ABSTRAKPenelitian ini bertujuan 1 memetakan rantai nilai dari Cimory, 2 analisis pengelolaan rantai nilai dari Cimory, 3 mengidentifikasi berbagai hambatan pada rantai nilai Cimory, 4 analisis efisiensi produksi dari supplier Cimory, dan 5 identifikasi strategi yang tepat untuk meminimalisir hambatan yang dialami oleh Cimory. Penelitian ini bersifat penelitian deskriptif dengan menggunakan analisis rantai nilai, analisis pengelolaan rantai nilai, identifikasi hambatan, efisiensi
Tackling acute cases of school bullying in the KiVa anti-bullying program : A comparison of two approaches

NARCIS (Netherlands)

Garandeau, Claire F.|info:eu-repo/dai/nl/380715066; Poskiparta, Elisa; Salmivalli, Christina

2014-01-01

Whether cases of bullying should be handled in a direct, condemning mode or in a manner that does not involve blaming the perpetrator is a controversial issue among school professionals. This study compares the effectiveness of a Confronting Approach where the bully is openly told that his behavior
Development of a self-ignition and combustion model for diesel engines; Modelisation de l`auto-inflammation et de la combustion pour les moteurs diesel

Energy Technology Data Exchange (ETDEWEB)

Pires Da Cruz, A.

1997-12-09

The work concerns self-ignition and combustion modelling in Diesel engines. Special attention is given to turbulence induced effects. Only gas fuel injection is taken into account. Turbulent mixing is identified as one of the main parameters controlling self-ignition in Diesel engines. However, turbulence effects are often neglected by models currently used in engine calculation codes. A new model based on results obtained by direct numerical simulation (DNS) is proposed. It includes turbulence effects by means of the scalar dissipation rate and presumed pdf of the mixture fraction and a chemical reaction progress variable. The model is validated through several steps. First, its results are compared to DNS in simple mixing and self-ignition cases. Then, its averaged version is integrated into the KIVA2-MB calculation code, where its behavior is tested in a one dimensional version and compared to other formulations. Finally, the model is validated with comparisons to experimental results of methane injection into a high pressure combustion chamber filled with hot air. The combustion chamber allows large optical access and therefore, optical diagnostics can be made. (author) 101 refs.
Empirical soot formation and oxidation model

Directory of Open Access Journals (Sweden)

Boussouara Karima

2009-01-01

Full Text Available Modelling internal combustion engines can be made following different approaches, depending on the type of problem to be simulated. A diesel combustion model has been developed and implemented in a full cycle simulation of a combustion, model accounts for transient fuel spray evolution, fuel-air mixing, ignition, combustion, and soot pollutant formation. The models of turbulent combustion of diffusion flame, apply to diffusion flames, which one meets in industry, typically in the diesel engines particulate emission represents one of the most deleterious pollutants generated during diesel combustion. Stringent standards on particulate emission along with specific emphasis on size of emitted particulates have resulted in increased interest in fundamental understanding of the mechanisms of soot particulate formation and oxidation in internal combustion engines. A phenomenological numerical model which can predict the particle size distribution of the soot emitted will be very useful in explaining the above observed results and will also be of use to develop better particulate control techniques. A diesel engine chosen for simulation is a version of the Caterpillar 3406. We are interested in employing a standard finite-volume computational fluid dynamics code, KIVA3V-RELEASE2.
Numerical analysis of spray characteristics of dimethyl ether and diethyl ether fuel

International Nuclear Information System (INIS)

Mohan, Balaji; Yang, Wenming; Yu, Wenbin; Tay, Kun Lin

2017-01-01

Highlights: • Thermo-physical properties of liquid DME and DEE are reported. • Ether fuels tend to cavitate higher compared to that of diesel fuel. • Spray tip penetration and SMD are found to be lesser for ether fuels. • Ether fuels shows excellent atomization behavior. - Abstract: In this work, the spray characteristics of ether fuels such as dimethyl ether (DME) and diethyl ether (DEE) have been numerically investigated using KIVA-4 CFD code. A new hybrid spray model developed by coupling the standard KHRT model to cavitation sub model was used. The detailed thermo-physical properties of ether fuels have been predicted and validated with experimental results available from literature. The cavitation inception inside the injector nozzle hole has been studied for ether fuels in comparison with diesel fuel. It was found that ether fuels cavitates higher compared to that of conventional diesel fuel because of its low viscosity. The spray tip penetration of diesel fuel was longer than that of ether fuels due to high viscosity and density of diesel fuel. Ether fuels characterized by low Ohnesorge number and high Reynolds number showed better atomization behavior compared to that of the diesel fuel.
High-Compression-Ratio; Atkinson-Cycle Engine Using Low-Pressure Direct Injection and Pneumatic-Electronic Valve Actuation Enabled by Ionization Current and Foward-Backward Mass Air Flow Sensor Feedback

Energy Technology Data Exchange (ETDEWEB)

Harold Schock; Farhad Jaberi; Ahmed Naguib; Guoming Zhu; David Hung

2007-12-31

This report describes the work completed over a two and one half year effort sponsored by the US Department of Energy. The goal was to demonstrate the technology needed to produce a highly efficient engine enabled by several technologies which were to be developed in the course of the work. The technologies included: (1) A low-pressure direct injection system; (2) A mass air flow sensor which would measure the net airflow into the engine on a per cycle basis; (3) A feedback control system enabled by measuring ionization current signals from the spark plug gap; and (4) An infinitely variable cam actuation system based on a pneumatic-hydraulic valve actuation These developments were supplemented by the use of advanced large eddy simulations as well as evaluations of fuel air mixing using the KIVA and WAVE models. The simulations were accompanied by experimental verification when possible. In this effort a solid base has been established for continued development of the advanced engine concepts originally proposed. Due to problems with the valve actuation system a complete demonstration of the engine concept originally proposed was not possible. Some of the highlights that were accomplished during this effort are: (1) A forward-backward mass air flow sensor has been developed and a patent application for the device has been submitted. We are optimistic that this technology will have a particular application in variable valve timing direct injection systems for IC engines. (2) The biggest effort on this project has involved the development of the pneumatic-hydraulic valve actuation system. This system was originally purchased from Cargine, a Swedish supplier and is in the development stage. To date we have not been able to use the actuators to control the exhaust valves, although the actuators have been successfully employed to control the intake valves. The reason for this is the additional complication associated with variable back pressure on the exhaust valves when
Perevägivalla materiaalõiguslik aspekt Eestis : [bakalaureusetöö] / Liisa Paas ; Tartu Ülikool, õigusteaduskond ; juhendaja: Jaan Sootak

Index Scriptorium Estoniae

Paas, Liisa

2010-01-01

Perevägivalla olemusest, statistikast kogutuna õiguskaitseorganites ja meditsiiniasutustes, regulatsioonist seadusandluses (põhiseadus, lastekaitse seadus, karistusseadustik, kriminaalmenetluse seadustik)
Three-dimensional local ALE-FEM method for fluid flow in domains containing moving boundaries/objects interfaces

Energy Technology Data Exchange (ETDEWEB)

Carrington, David Bradley [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Monayem, A. K. M. [Univ. of New Mexico, Albuquerque, NM (United States); Mazumder, H. [Univ. of New Mexico, Albuquerque, NM (United States); Heinrich, Juan C. [Univ. of New Mexico, Albuquerque, NM (United States)

2015-03-05

A three-dimensional finite element method for the numerical simulations of fluid flow in domains containing moving rigid objects or boundaries is developed. The method falls into the general category of Arbitrary Lagrangian Eulerian methods; it is based on a fixed mesh that is locally adapted in the immediate vicinity of the moving interfaces and reverts to its original shape once the moving interfaces go past the elements. The moving interfaces are defined by separate sets of marker points so that the global mesh is independent of interface movement and the possibility of mesh entanglement is eliminated. The results is a fully robust formulation capable of calculating on domains of complex geometry with moving boundaries or devises that can also have a complex geometry without danger of the mesh becoming unsuitable due to its continuous deformation thus eliminating the need for repeated re-meshing and interpolation. Moreover, the boundary conditions on the interfaces are imposed exactly. This work is intended to support the internal combustion engines simulator KIVA developed at Los Alamos National Laboratories. The model's capabilities are illustrated through application to incompressible flows in different geometrical settings that show the robustness and flexibility of the technique to perform simulations involving moving boundaries in a three-dimensional domain.
Asymptotic analysis soot model and experiment for a directed injection engine

Science.gov (United States)

Liu, Yongfeng; Pei, Pucheng; Xiong, Qinghui; Lu, Yong

2012-09-01

The existing soot models are either too complex and can not be applied to the internal combustion engine, or too simple to make calculation errors. Exploring the soot model becomes the pursuit of the goal of many researchers within the error range in the current computer speed. On the basis of the latest experimental results, TP (temperature phases) model is presented as a new soot model to carry out optimization calculation for a high-pressure common rail diesel engine. Temperature and excess air factor are the most important two parameters in this model. When zone temperature T0.6, only the soot precursors—polycyclic aromatic hydrocarbons(PAH) is created and there is no soot emission. When zone temperature T ⩾ 1 500 K and excess air factor Φinjection time, variation of rail pressure and variation of speed among TP models. The experimental results indicate that the TP model can carry out optimization and computational fluid dynamics can be a tool to calculate for a high-pressure common rail directed injection diesel engine. The TP model result is closer than the use of the original KIVA-3V results of soot model accuracy by about 50% and TP model gives a new method for engine researchers.
Capturing the Flatness of a peer-to-peer lending network through random and selected perturbations

Science.gov (United States)

Karampourniotis, Panagiotis D.; Singh, Pramesh; Uparna, Jayaram; Horvat, Emoke-Agnes; Szymanski, Boleslaw K.; Korniss, Gyorgy; Bakdash, Jonathan Z.; Uzzi, Brian

Null models are established tools that have been used in network analysis to uncover various structural patterns. They quantify the deviance of an observed network measure to that given by the null model. We construct a null model for weighted, directed networks to identify biased links (carrying significantly different weights than expected according to the null model) and thus quantify the flatness of the system. Using this model, we study the flatness of Kiva, a large international crownfinancing network of borrowers and lenders, aggregated to the country level. The dataset spans the years from 2006 to 2013. Our longitudinal analysis shows that flatness of the system is reducing over time, meaning the proportion of biased inter-country links is growing. We extend our analysis by testing the robustness of the flatness of the network in perturbations on the links' weights or the nodes themselves. Examples of such perturbations are event shocks (e.g. erecting walls) or regulatory shocks (e.g. Brexit). We find that flatness is unaffected by random shocks, but changes after shocks target links with a large weight or bias. The methods we use to capture the flatness are based on analytics, simulations, and numerical computations using Shannon's maximum entropy. Supported by ARL NS-CTA.
A study on the fuel injection and atomization characteristics of soybean oil methyl ester (SME)

International Nuclear Information System (INIS)

Park, Su Han; Kim, Hyung Jun; Suh, Hyun Kyu; Lee, Chang Sik

2009-01-01

The spray atomization characteristics of an undiluted biodiesel fuel (soybean oil methyl ester, SME) in a diesel engine were investigated and compared with that of diesel fuel (ultra low sulfur diesel, ULSD). The experimental results were compared with numerical results predicted by the KIVA-3V code. The spray characteristics of the spray tip penetration, spray area, spray centroid and injection delay were analyzed using images obtained from a visualization system. The Sauter mean diameter (SMD) was analyzed using a droplet analyzer system to investigate the atomization characteristics. It was found that the peak injection rate increases and advances when the injection pressure increases due to the increase of the initial injection momentum. The injection rate of the SME, which has a higher density than diesel fuel, is higher than that of diesel fuel despite its low injection velocity. The high ambient pressure induces the shortening of spray tip penetration of the SME. Moreover, the predicted spray tip penetration pattern is similar to the pattern observed experimentally. The SMD of the SME decreases along the axial distance. The predicted local and overall SMD distribution patterns of diesel and SME fuels illustrate similar tendencies when compared with the experimental droplet size distribution patterns
Atomization and spray characteristics of bioethanol and bioethanol blended gasoline fuel injected through a direct injection gasoline injector

International Nuclear Information System (INIS)

Park, Su Han; Kim, Hyung Jun; Suh, Hyun Kyu; Lee, Chang Sik

2009-01-01

The focus of this study was to investigate the spray characteristics and atomization performance of gasoline fuel (G100), bioethanol fuel (E100), and bioethanol blended gasoline fuel (E85) in a direct injection gasoline injector in a gasoline engine. The overall spray and atomization characteristics such as an axial spray tip penetration, spray width, and overall SMD were measured experimentally and predicted by using KIVA-3V code. The development process and the appearance timing of the vortices in the test fuels were very similar. In addition, the numerical results accurately described the experimentally observed spray development pattern and shape, the beginning position of the vortex, and the spray breakup on the spray surface. Moreover, the increased injection pressure induced the occurrence of a clear circular shape in the downstream spray and a uniform mixture between the injected spray droplets and ambient air. The axial spray tip penetrations of the test fuels were similar, while the spray width and spray cone angle of E100 were slightly larger than the other fuels. In terms of atomization performance, the E100 fuel among the tested fuels had the largest droplet size because E100 has a high kinematic viscosity and surface tension.
Numerical simulation of the two-phase flow in Diesel injectors; Modelisation de l'ecoulement diphasique dans les injecteurs diesel

Energy Technology Data Exchange (ETDEWEB)

Dumont, N.

2004-12-15

Combustion quality in Direct Injection Diesel engine depends strongly on the jet atomization in the combustion chamber. Atomization is due to aerodynamic interaction, but it is also influenced by the liquid flow characteristics at the injector exit. As the phenomena are extremely rapid and they take place in very small geometries, experimental investigations are pretty hard to manage. Consequently, our purpose is to develop a simulation code which has two goals: a better comprehension of the flow in the injector in order to optimize the injector geometry, and the prediction of the flow characteristics at the injector exit, in order to provide boundary conditions to combustion simulation codes. At first, we describe phenomena occurring in the injector and their influence on atomization. Their we make a revue of the two-phase models, defining their validity domains. We present the model that we use, based on a homogeneous flow assumption in each mesh cell, and its implementation in KIVA-MB. We show that a particular attention has been focused on exit boundary conditions: we used non-reflective conditions. Simulations results are then described and validated for a one-hole injector and a multi-hole injector, showing the code possibilities to get a better understanding of the liquid flow in an injector during the whole injection. (author)

Numerical and Experimental Study on the Combustion and Emission Characteristics of a Dimethyl Ether (DME Fueled Compression Ignition Engine Études numériques et expérimentales sur les caractéristiques de combustion et d’émissions d’un éther diméthylique (EDM- moteur à auto-allumage rempli de combustible

Directory of Open Access Journals (Sweden)

Kim Hyung Jun

2012-05-01

Full Text Available A numerical investigation was carried out to study on the combustion and emission characteristics of dimethyl ether (DME with wide ranges of injection timings in compression ignition engines. In order to simulate DME combustion processes, a KIVA-3V code coupled with a chemistry solver was used to solve the detailed chemical kinetics model of DME oxidation. In addition, the Kelvin-Helmholtz-Rayleigh-Taylor (KH-RT hybrid breakup model and Renormalization Group (RNG k-ε models were applied to analyze the spray characteristics and turbulent flow, respectively. To predict the NOx formation during DME combustion, a reduced Gas Research Institute (GRI NO mechanism was used. From these results on the combustion and emission, the calculated results were compared with experimental ones for the same operating conditions. In the combustion characteristics, the calculated combustion pressure and heat release rates agreed well with experimental results. The levels of experimental NOx emissions was reduced as the start of the injection timing retarded, and also these trends appeared in calculated emission characteristics. Additionally, the calculated CO and HC emissions show an increasing trend as the start of the injection is retarded. Dans cette étude, nous considérons la simulation de la combustion du dimethyl ether (DME dans un moteur à allumage par compression. Les caractéristiques de la combustion ainsi que les émissions polluantes sont analysées sur une large gamme d’avance à l’injection. Afin de simuler le processus de combustion du EDM, le code KIVA-3V couplé à un solveur chimique a été utilisé pour résoudre la cinétique détaillée de l’oxydation du EDM. Le modèle de rupture de Kelvin-Helmholtz-Rayleigh- Taylor (KH-RT ainsi que le modèle de turbulence k-ε RNG ont été appliqués pour analyser respectivement les caractéristiques du jet et l’écoulement turbulent. Pour prévoir la formation de NOx pendant la combustion
2005. aasta arhitektuurivõistlused

Index Scriptorium Estoniae

2005-01-01

Tulemused: Viljandi Metsakalmistu kabel: I - Andres Lember (Male Arhitektid); Tartu Vabaduse sild: I - Stanislav Shulman, Oleg Samohhin (Peterburi, Transmost); Tartu Mõisavahe kvartali hoonestuskava: I .- Ott Kadarik, Villem Tomiste, Mihkel Tüür (Kosmos); Seewaldi ala planeerimine: I - Jüri Martson, Rasmus Reinolt, Ivo-Martin Veelma (Lokomotiiv); Rotermanni kvartali arhitektuurivõistlus: I - Kosmos; aasta betoonehitis 2004: Ülemiste hotell Tallinnas, Martin Aunin; Lasnamäe Jumalaema kirik: I - Oleg Zhemtshugov (AB Z-Projekt), Nikolai Djatko, Jevgeni Kolomenkin; Pärnu vanalinna ja rannapiirkonna tänavakaubanduse inventari ja jäätmejaamade kujundus: I - Peeter Varrak; Kihnu sadamaala planeerimise ja hoonestamise ideevõistlus: I - Siiri Vallner, Kaire Nõmm, Helina Lass, Anna-Liisa Unt (Kavakava); Narva kolledzhi uus hoone: I - Katrin Koov, S. Vallner (Kavakava) ja Indrek Peil (Head Arhitektid); Randvere algkooli hoone: II - Inga Raukas (Arhitektuuriagentuur); Tartu Toomemäe valgustuse ja arhitektuursete väikevormide ideevõistlus: II - K. Koov ja Heidi Urb (Kabvakava) ning Maarja Kask, Ralf Lõoke, Karli Luik (Salto); Metsakalmistu arhitektide kalmeala: I - M. Kask, R. Lõoke; Skoone bastioni ideevõistlus: I - M. Kask, R. Lõoke, K. Luik (Salto); Mahtra talurahvamuuseum: I -Tomomi Hayashi, Hanno Grossschmidt; parim eramu 2004-2005: metallmaja Tabasalus, Muru & Pere; Tallinna loomaaia läänevärav: I - I. Raukas, Monika Löve, Oliver Soomets; parim puitehitis 2005: Naba lasteaed Pirital, arhitektid Vahur Sova, Lauri Saar, sisearhitekt Mari Tosmin; Pae karjääri revitaliseerimine: III - Veronika Valk, Kerli Raamsalu
Instilling Service Learning to Undergraduate Business Students: A Case Study Approach to Understanding Business-Related Concepts with the Use of Kiva

Science.gov (United States)

Grotrian-Ryan, Sheri; Ryan, Kyle; Jackson, Alan

2016-01-01

Higher education continues to place an emphasis on service-learning, specifically within business and management sciences (Kenworthy-U'Ren & Peterson, 2005). A local academic business organization at a small institution chose to embark on a service-learning endeavor. The purpose of this study was for business majors, active in Phi Beta Lambda…
Investigation of Spark Ignition and Autoignition in Methane and Air Using Computational Fluid Dynamics and Chemical Reaction Kinetics. A numerical Study of Ignition Processes in Internal Combustion Engines

Energy Technology Data Exchange (ETDEWEB)

Nordrik, R.

1993-12-01

The processes in the combustion chamber of internal combustion engines have received increased attention in recent years because their efficiencies are important both economically and environmentally. This doctoral thesis studies the ignition phenomena by means of numerical simulation methods. The fundamental physical relations include flow field conservation equations, thermodynamics, chemical reaction kinetics, transport properties and spark modelling. Special attention is given to the inclusion of chemical kinetics in the flow field equations. Using his No Transport of Radicals Concept method, the author reduces the computational efforts by neglecting the transport of selected intermediate species. The method is validated by comparison with flame propagation data. A computational method is described and used to simulate spark ignition in laminar premixed methane-air mixtures and the autoignition process of a methane bubble surrounded by hot air. The spark ignition simulation agrees well with experimental results from the literature. The autoignition simulation identifies the importance of diffusive and chemical processes acting together. The ignition delay times exceed the experimental values found in the literature for premixed ignition delay, presumably because of the mixing process and lack of information on low temperature reactions in the skeletal kinetic mechanism. Transient turbulent methane jet autoignition is simulated by means of the KIVA-II code. Turbulent combustion is modelled by the Eddy Dissipation Concept. 90 refs., 81 figs., 3 tabs.
Effects of Injection Rate Profile on Combustion Process and Emissions in a Diesel Engine

Directory of Open Access Journals (Sweden)

Fuqiang Bai

2017-01-01

Full Text Available When multi-injection is implemented in diesel engine via high pressure common rail injection system, changed interval between injection pulses can induce variation of injection rate profile for sequential injection pulse, though other control parameters are the same. Variations of injection rate shape which influence the air-fuel mixing and combustion process will be important for designing injection strategy. In this research, CFD numerical simulations using KIVA-3V were conducted for examining the effects of injection rate shape on diesel combustion and emissions. After the model was validated by experimental results, five different shapes (including rectangle, slope, triangle, trapezoid, and wedge of injection rate profiles were investigated. Modeling results demonstrate that injection rate shape can have obvious influence on heat release process and heat release traces which cause different combustion process and emissions. It is observed that the baseline, rectangle (flat, shape of injection rate can have better balance between NOx and soot emissions than the other investigated shapes. As wedge shape brings about the lowest NOx emissions due to retarded heat release, it produces the highest soot emissions among the five shapes. Trapezoid shape has the lowest soot emissions, while its NOx is not the highest one. The highest NOx emissions were produced by triangle shape due to higher peak injection rate.
Miks lootusrikkalt tehtud plaanid nurjuvad? / Anneli Lorenz, Jakob Kübarsepp, Kätlin Tiigi, Mikk Kasesalk ; küsitlenud Anna-Liisa Mets

Index Scriptorium Estoniae

2014-01-01

Õpingute poolelijätmise põhjusi analüüsivad Eesti Maaülikooli õppeosakonna juhataja Anneli Lorenz, TTÜ õppeprorektor Jakob Kübarsepp, TTÜ Üliõpilaskonna juhatuse liige Kätlin Tiigi ja Tallinn Ülikooli karjäärinõustaja Mikk Kasesalk
3-D modeling of parietal liquid films in internal combustion engines; Modelisation tridimensionnelle des films liquides parietaux dans les moteurs a combustion interne

Energy Technology Data Exchange (ETDEWEB)

Foucart, H

1998-12-11

To simulate the air-fuel mixing in the intake ports and cylinder of an internal combustion engines, a wall fuel liquid film model has been developed for integration in 3D CFD codes. Phenomena taken into account include wall film formation by an impinging spray without splashing effect, film transport such as governed by mass and momentum equations with hot wall effects, and evaporation considering energy equation with an analytical mass transfer formulation developed here. A continuous-fluid method is used to describe the wall film over a three dimensional complex surface. The basic approximation is that of a laminar incompressible boundary layer; the liquid film equations are written in an integral form and solved by a first-order ALE finite volume scheme; the equation system is closed without coefficient fitting requirements. The model has been implemented in a Multi-Block version of KIVA-II (KMB) and tested against problems having theoretical solutions. Then in a first step, it has been compared to the measurements obtained in a cylindrical pipe reproducing the main characteristics of SI engine intake pipe flow and in a second step, it has been compared to the Xiong experiment concerning the film evaporation on a hot wall. The film behaviour is satisfactory reproduced by the computations for a set of operating conditions. Finally, engine calculations were conducted showing the importance of including a liquid film model for the simulations. (author) 54 refs.
Effect of Pilot Injection Timings on the Combustion Temperature Distribution in a Single-Cylinder CI Engine Fueled with DME and ULSD

Directory of Open Access Journals (Sweden)

Jeon Joonho

2016-01-01

Full Text Available Many studies of DiMethyl Ether (DME as an alternative fuel in Compression-Ignition (CI engines have been performed. Although diverse DME engine research has been conducted, the investigation of combustion behavior and temperature distribution in the combustion engine has not progressed due to the fact that there is no sooting flame in DME combustion. In order to investigate the combustion characteristics in this study, the KIVA-3 V code was implemented to research various pilot injection strategies on a single-cylinder CI engines with DME and Ultra-Low-Sulfur Diesel (ULSD fuels. The combustion distribution results obtained from the numerical investigation were validated when compared with the measurement of flame temperature behaviors in the experimental approach. This study showed that long intervals between two injection timings enhanced pilot combustion by increasing the ambient pressure and temperature before the start of the main combustion. Different atomization properties between DME and ULSD fuels contributed to the formation of a fuel-air mixture at the nozzle tip and piston lip regions, separately, which strongly affected the temperature distribution of the two fuels. In addition, the pilot injection timing played a vital role in regard to ignition delay and peak combustion temperatures. Exhaust emissions, such as NOx and soot, are related to the local equivalence ratio and temperature in the combustion chamber, also illustrated by the contrary result on a Φ (equivalence ratio – T (temperature map.
The role of the pediatrician in youth violence prevention

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Soon Ki Kim

2013-01-01

Full Text Available School bullying has become a major social problem in Korea after the emergence of media reports on children who committed suicide after being victimized by bullies. In this article, we review the characteristics of bullying, and investigate the role of the pediatrician in the prevention of and intervention against bullying and school violence. Bullying can take on many forms such as physical threat, verbal humiliation, malicious rumors, and social ostracism. The prevalence of bullying in various countries is approximately 10% to 20%. In Korea, the prevalence of school violence is similar but seems to be more intense because of the highly competitive environment. From our review of literature, we found that children who were bullied had a significantly higher risk of developing psychosomatic and psychosocial problems such as headache, abdominal pain, anxiety, and depression than those who were not bullied. Hence, it is important for health practitioners to detect these signs in a child who was bullied by questioning and examining the child, and to determine whether bullying plays a contributing role when a child exhibits such signs. Pediatricians can play an important role in the prevention of or intervention against school violence along with school authorities, parents, and community leaders. Moreover, guidelines to prevent school violence, such as the Olweus Bullying Prevention Program, KiVa of the Finish Ministry of Education, and Connected Kids: Safe, Strong, Secure of the American Academy Pediatrics, should be implemented.
Communal spaces: aggregation and integration in the Mogollon Region of the United States Southwest

Energy Technology Data Exchange (ETDEWEB)

Nisengard, Jennifer E.

2006-12-01

Aggregation and integration are processes that occur in human societies throughout the globe. An informative example of population aggregation and social integration can be observed in the North American desert borderlands from A.D. 250 to 1450 in the area known as the Mogollon region. In fact, Mogollon communities oscillated from smaller social groups into larger ones and dispersed into smaller groups only to form larger ones again. For this reason, examining the groups of people living in the Mogollon region provides a magnified view of social change over a substantial period. Understanding patterns of aggregation and integration provides researchers with the promise for research into the nature of these phenomena. In general, the Mogollon region is characterized by limited water supplies and low average annual precipitation. However, pockets of the Mogollon area, including the Mimbres valley and the Gila River valley, represent oases, where permanent rivers and their associated tributaries allowed for the pursuit of agricultural endeavors and access to a wide variety of wild plant and animal resources. The areas with these kinds of potential became population centers for previously dispersed groups of people living in the region. These people exploited natural resources and practiced agriculture in areas surrounding their communities. Over time, more organized aggregated and socially integrated communities were established throughout the region. Using ancient Mogollon communal architecture, commonly called kivas, this study examines issues of, and evidence for, population aggregation and social integration.
Individual and contextual predictors of cyberbullying: the influence of children's provictim attitudes and teachers' ability to intervene.

Science.gov (United States)

Christian Elledge, L; Williford, Anne; Boulton, Aaron J; Depaolis, Kathryn J; Little, Todd D; Salmivalli, Christina

2013-05-01

Electronic social communication has provided a new context for children to bully and harass their peers and it is clear that cyberbullying is a growing public health concern in the US and abroad. The present study examined individual and contextual predictors of cyberbullying in a sample of 16, 634 students in grades 3-5 and 7-8. Data were obtained from a large cluster-randomized trial of the KiVa antibullying program that occurred in Finland between 2007 and 2009. Students completed measures at pre-intervention assessing provictim attitudes (defined as children's beliefs that bullying is unacceptable, victims are acceptable, and defending victims is valued), perceptions of teachers' ability to intervene in bullying, and cyberbullying behavior. Students with higher scores on provictim attitudes reported lower frequencies of cyberbullying. This relationship was true for individual provictim attitudes as well as the collective attitudes of students within classrooms. Teachers' ability to intervene assessed at the classroom level was a unique, positive predictor of cyberbullying. Classrooms in which students collectively considered their teacher as capable of intervening to stop bullying had higher mean levels of cyberbullying frequency. Our findings suggest that cyberbullying and other indirect or covert forms of bullying may be more prevalent in classrooms where students collectively perceive their teacher's ability to intervene in bullying as high. We found no evidence that individual or contextual effects were conditional on age or gender. Implications for research and practice are discussed.
Näitlejad ühes mullis, esietendus ukse ees / Hendrik Toompere jr. jr., Liisa Pulk, Mait Joorits ... [jt.] ; intervjueerinud Liisi Seil ; kommenteerinud Helle Leppik

Index Scriptorium Estoniae

2010-01-01

Vestlus Eesti muusika- ja teatriakadeemia lavakunstikooli XXIV lennu tudengitega, kelle lõputöö Tom Stoppardi näidend "Arkaadia" etendub Ugala laval. Lisatud Ugala teatri kirjandustoimetaja arvamus
Cynthia Kaplan : Venemaa ei suuda mõista, mida tähendab suveräänsetest rahvusriikidest naabrite omamine / Cynthia Kaplan ; interv. Liisa Past

Index Scriptorium Estoniae

Kaplan, Cynthia

2007-01-01

California ülikooli politoloogiaprofessor, Eesti-ekspert vastab küsimustele, kas tavaliste eestlaste ja venelaste puhul toimib identiteet ja suhe oma riigiga erinevalt, kas on reaalne leida peale rahvusliku identiteedi ka riigi- või kodanikuidentiteet, kas ta suhtub skeptiliselt mõttesse leida Eestis ühine ajalugu, kas Venemaal on endiselt imperialistlikke ambitsioone teiste riikide suhtes
Simulation research on the effect of cooled EGR, supercharging and compression ratio on downsized SI engine knock

Science.gov (United States)

Shu, Gequn; Pan, Jiaying; Wei, Haiqiao; Shi, Ning

2013-03-01

Knock in spark-ignition(SI) engines severely limits engine performance and thermal efficiency. The researches on knock of downsized SI engine have mainly focused on structural design, performance optimization and advanced combustion modes, however there is little for simulation study on the effect of cooled exhaust gas recirculation(EGR) combined with downsizing technologies on SI engine performance. On the basis of mean pressure and oscillating pressure during combustion process, the effect of different levels of cooled EGR ratio, supercharging and compression ratio on engine dynamic and knock characteristic is researched with three-dimensional KIVA-3V program coupled with pressure wave equation. The cylinder pressure, combustion temperature, ignition delay timing, combustion duration, maximum mean pressure, and maximum oscillating pressure at different initial conditions are discussed and analyzed to investigate potential approaches to inhibiting engine knock while improving power output. The calculation results of the effect of just cooled EGR on knock characteristic show that appropriate levels of cooled EGR ratio can effectively suppress cylinder high-frequency pressure oscillations without obvious decrease in mean pressure. Analysis of the synergistic effect of cooled EGR, supercharging and compression ratio on knock characteristic indicates that under the condition of high supercharging and compression ratio, several times more cooled EGR ratio than that under the original condition is necessarily utilized to suppress knock occurrence effectively. The proposed method of synergistic effect of cooled EGR and downsizing technologies on knock characteristic, analyzed from the aspects of mean pressure and oscillating pressure, is an effective way to study downsized SI engine knock and provides knock inhibition approaches in practical engineering.
Turbulence-combustion interaction in direct injection diesel engine

Directory of Open Access Journals (Sweden)

Bencherif Mohamed

2014-01-01

Full Text Available The experimental measures of chemical species and turbulence intensity during the closed part of the engine combustion cycle are today unattainable exactly. This paper deals with numerical investigations of an experimental direct injection Diesel engine and a commercial turbocharged heavy duty direct injection one. Simulations are carried out with the kiva3v2 code using the RNG (k-ε model. A reduced mechanism for n-heptane was adopted for predicting auto-ignition and combustion processes. From the calibrated code based on experimental in-cylinder pressures, the study focuses on the turbulence parameters and combustion species evolution in the attempt to improve understanding of turbulence-chemistry interaction during the engine cycle. The turbulent kinetic energy and its dissipation rate are taken as representative parameters of turbulence. The results indicate that chemistry reactions of fuel oxidation during the auto-ignition delay improve the turbulence levels. The peak position of turbulent kinetic energy coincides systematically with the auto-ignition timing. This position seems to be governed by the viscous effects generated by the high pressure level reached at the auto-ignition timing. The hot regime flame decreases rapidly the turbulence intensity successively by the viscous effects during the fast premixed combustion and heat transfer during other periods. It is showed that instable species such as CO are due to deficiency of local mixture preparation during the strong decrease of turbulence energy. Also, an attempt to build an innovative relationship between self-ignition and maximum turbulence level is proposed. This work justifies the suggestion to determine otherwise the self-ignition timing.
The Impact of Metal Age® Training Programme on the Well-Being of Latvian Office Workers

Directory of Open Access Journals (Sweden)

Sprūdža Dagmāra

2016-10-01

Full Text Available There are many factors that affect the well-being and health of employees and the productivity of organisations. The aim of this study was to determine the impact of the Metal Age training programme (MA® on the well-being of office workers, including investigation of work ability, the stress-causing factors and role of leadership. The study was carried out using questions from four international questionnaires about stress, leadership, and work ability. The intervention group had a training course between the surveys using the ME® method. Several employee stress-causing factors were identified: bad relationship with their workmates was mentioned by 94% of workers; competitive and strenuous atmosphere — by more than 80%; psychological violence or bullying at the workplace by more than 80%, and more than 75% of employee’s could not relax after work. Wellness and microclimate in the workplaces were on a relatively high level: the average rating of seven Kiva questions was 7.5. The respondent attitude after ME® did not change significantly. Latvian office workers displayed moderate and good work ability (Work Ability Index, WAI 34.5–38.6. The best work ability was shown in the age group from 20 to 49 (WAI 34.8–39.4; work ability decreased with age. The best correlation was observed between Work Ability Index and “get into situations, that invoke negative feelings” (r = 0.26 and “carrying out ongoing tasks because of other intervening or more urgent matters” (r = −0.24. After ME® the reaction to some stress-causing factors was improved.
Effects of fatty acid methyl esters proportion on combustion and emission characteristics of a biodiesel fueled diesel engine

International Nuclear Information System (INIS)

E, Jiaqiang; Liu, Teng; Yang, W.M.; Li, Jing; Gong, Jinke; Deng, Yuanwang

2016-01-01

Highlights: • The effects of FAMEs proportion on combustion and emission were numerically studied. • The impact of the saturation level on combustion characteristic is not straightforward. • The NO_x emission is mainly related to the fuel kinetic viscosity. - Abstract: With the growing energy problems, scholars has focused on utilizing renewable biodiesel as a fossil fuel alternative. Four different typical biodiesels were employed to investigate the effects of fatty acid methyl esters proportion on combustion and emission characteristics of a biodiesel fueled diesel engine in terms of heat release rate, cylinder pressure, indicated power and formation of NO_x emission. The corresponding computational fluid dynamic modeling was performed by KIVA4 coupled CHEMKIN II code, and a special chemical kinetics mechanism consisting of 106 species and 263 reactions was developed to simulate the combustion process since it contained methyl linoleate, a majority component in most biodiesel, thereby improved the accuracy of simulation. The simulation results indicated that chemical ignition delay time and kinetic viscosity of biodiesel played very important roles in combustion process. Higher saturation level could shorten chemical ignition delay time, but the higher saturation contents like C16:0 and C18:0 together with C18:1 (a single double bond methyl ester) would increase the kinetic viscosity, resulting in poor fuel–air mixing and evaporation process. Lower kinetic viscosity methyl esters like C18:2 and C18:3 was favorable for better fuel–air mixing and subsequent combustion, however, a higher NO_x emission was discovered. Therefore, the relationship between saturation levels and combustion and emission characteristics of biodiesels is not simple and straightforward, the balance of five majority components is very important.
Numerical study of heat transfer and combustion in IC engine with a porous media piston region

International Nuclear Information System (INIS)

Zhou, Lei; Xie, Mao-Zhao; Luo, Kai Hong

2014-01-01

Based on superadiabatic combustion in porous medium (PM), the porous medium engine as a new combustion concept is proposed to achieve high combustion efficiency and low emissions. In this paper, an axisymmetric model with detailed chemistry and two-temperature treatment is implemented into a variant of the KIVA-3V code to simulate the working process of the PM engine. Comparisons with the same engine but without PM are conducted. Temperature evolution of the PM and its effects are discussed in detail. Key factors affecting heat transfer, combustion and emissions of the PM engine, such as porosity, the initial PM temperature and equivalence ratio, are analyzed. The results show that the characteristics of heat transfer, emissions and combustion of the PM engine are superior to the engine without PM, providing valuable support for the PM engine concept. In particular, the PM engine is shown to sustain ultra lean combustion. - Graphical abstract: In the PM engine, a PM reactor is mounted on the piston head as shown in Fig. 1 which shows the schematic diagram of the computational domain. The heat exchange process between PM material and compressed air increases with upward motion of piston at compression stroke. At the TDC, almost all the air is compressed and closed to PM volume, meanwhile, the fuel is injected into PM chamber to achieve homogenization combustion. - Highlights: •Two-temperature treatment studies the working process of the PM engine. •Self-balancing temperature of the PM determines the continued and stable work. •Stronger heat exchange occurs between gas and PM with smaller porosity. •The PM engine can have lower levels of NO x , unburnt HC and CO emissions
Quando a violência virtual nos atinge: os programas de educação para a superação do cyberbullying e outras agressões virtuais

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Thais Cristina Leite Bozza

2017-09-01

Full Text Available A presente pesquisa bibliográfica, do tipo Estado da Arte, teve como objetivo descrever e analisar programas educativos que visam a prevenção e redução da cyber agressão. A princípio utilizamos as bases de dados Scielo, Bvs, Eric, Apa Pshyc Net e Bireme, para buscar artigos científicos publicados em periódicos, no período de 2000 a 2015; contudo, a partir do critério de selecionarmos somente os estudos empíricos que continham informações suficientes sobre os programas, foi encontrado um número reduzido de artigos. Ampliamos nossas buscas e selecionamos 19 fontes, que foram utilizadas para descrever 5 programas educativos: PRIRES, CYBERTRAINIG, KIVA, CONRED E BEATBULLYING. Os programas foram descritos a partir das categorias: objetivo, referenciais teóricos, características, conteúdos, atividades e avaliação; e analisados à luz da perspectiva construtivista, visando identificar se as práticas são favoráveis ao desenvolvimento da autorregulação moral dos alunos. Os resultados obtidos indicam que o programa PRIRES foi o que mais atendeu aos nossos critérios de análise. Acreditamos na relevância da presente investigação, uma vez que apresentamos as características das diversas facetas da agressão virtual, bem como analisamos as intervenções educativas presentes na literatura para prevenir e reduzir a incidência destes problemas, trazendo implicações que podem embasar ações futuras nas escolas brasileiras.
Asymptotic analysis, direct numerical simulation and modeling of premixed turbulent flame-wall interaction; Etude asymptotique, simulation numerique directe et modelisation de l`interaction flamme turbulente premelangee-paroi

Energy Technology Data Exchange (ETDEWEB)

Bruneaux, G.

1996-05-20

Premixed turbulent flame-wall interaction is studied using theoretical and numerical analysis. Laminar interactions are first investigated through a literature review. This gives a characterization of the different configurations of interaction and justifies the use of simplified kinetic schemes to study the interaction. Calculations are then performed using Direct Numerical Simulation with a one-step chemistry model, and are compared with good agreements to asymptotic analysis. Flame-wall distances and wall heat fluxes obtained are compared successfully with those of the literature. Heat losses decrease the consumption rate, leading to extinction at the maximum of wall heat flux. It is followed by a flame retreat, when the fuel diffuses into the reaction zone, resulting in low unburnt hydrocarbon levels. Then, turbulent regime is investigated, using two types of Direct Numerical Simulations: 2D variable density and 3D constant density. Similar results are obtained: the local turbulent flame behavior is identical to a laminar interaction, and tongues of fresh gases are expelled from the wall region, near zones of quenching. In the 2D simulations, minimal flame-wall distances and maximum wall heat fluxes are similar to laminar values. However, the structure of the turbulence in the 3D calculations induces smaller flame-wall distances and higher wall heat fluxes. Finally, a flame-wall interaction model is built and validated. It uses the flamelet approach, where the flame is described in terms of consumption speed and flame surface density. This model is simplified to produce a law of the wall, which is then included in a averaged CFD code (Kiva2-MB). It is validated in an engine calculation. (author) 36 refs.

Kus tegijaid, seal nägijaid? Akadeemilise prokrastineerimise õpetajapoolse märkamise seosed õpilaste individuaalsete erinevustega / Kati Aus, Grete Arro, Anna-Liisa Jõgi, Elina Malleus

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Aus, Kati, 1978-

2014-01-01

Aastatel 2007-2012 läbi viidud uuringutest, milles jälgiti seda, kuidas langevad kokku õpilaste hinnangud oma prokrastineerimiskäitumisele ning õpetajate hinnangud samade laste kalduvusele õpitegevustega viimase hetkeni viivitada
Traditions of the Sun, One Model for Expanding Audience Access

Science.gov (United States)

Hawkins, I.; Paglierani, R.

2006-12-01

The Internet is a powerful tool with which to expand audience access, bringing students, teachers and the public to places and resources they might not otherwise visit or make use of. We will present Traditions of the Sun, an experiential Web site that invites exploration of the world's ancient observatories with special emphasis on Chaco Culture National Historic Park in the Four Corners region of the US and several sites in the Yucatan Peninsula in Mexico. Traditions of the Sun includes resources in English and Spanish along with a unique trilingual on-line book, "Traditions of the Sun, A Photographic Journal," containing explanatory text in Yucatec Maya as well. Traditions of the Sun offers rich opportunities for virtual visits to ancient sites used for solar observing while learning about current NASA research on the Sun and indigenous solar practices within a larger historical and cultural context. The site contains hundreds of photographs, historic images and rich multimedia to help tell the story of the Sun-Earth Connection. Visitors to the site can zoom in on the great Mayan cities of Chichen Itza, Uxmal, Dzibilchaltun, and Mayapan to learn about Mayan astronomy, history, culture, and science. They can also visit Chaco Canyon to watch sunrise over Pueblo Bonito on the summer solstice, take a virtual reality tour of the great kiva at Casa Rinconada or see panoramic vistas from Fajada Butte, an area which, for preservation purposes, is restricted to the public. Traditions of the Sun provides one model of how exploration and discovery can come to life for both formal and informal audiences via the Internet. Traditions of the Sun is a collaborative project between NASA's Sun-Earth Connection Education Forum, the National Park Service, Instituto National de Antropologia e Historia, Universidad Nacional Autonoma de Mexico, and Ideum.
Numerical modelling of fuel sprays

Energy Technology Data Exchange (ETDEWEB)

Bergstroem, C.

1999-06-01

The way the fuel is introduced into the combustion chamber is one of the most important parameters for the power output and the generation of emissions in the combustion of liquid fuels. The interaction between the turbulent gas flow field and the liquid fuel droplets, the vaporisation of them and the mixing of the gaseous fuel with the ambient air that are vital parameters in the combustion process. The use of numerical calculations is an important tool to better understand these complex interacting phenomena. This thesis reports on the numerical modelling of fuel sprays in non-reacting cases using an own developed spray module. The spray module uses the stochastic parcel method to represent the spray. The module was made in such manner that it could by coupled with different gas flow solver. Results obtained from four different gas flow solvers are presented in the thesis, including the use of two different kinds of turbulence models. In the first part the spray module is coupled with a k-{eta} based 2-D cylindrical gas flow solver. A thorough sensitivity analysis was performed on the spray and gas flow solver parameters, such as grid size dependence and sensitivity to initial values of k-{eta}. The results of the spray module were also compared to results from other spray codes, e.g. the well known KIVA code. In the second part of this thesis the spray was injected into a turbulent and fully developed crossflow studied. The spray module was attached to a LES (Large Eddy Simulation) based flow solvers enabling the study of the complex structures and time dependent phenomena involved in spray in crossflows. It was found that the spray performs an oscillatory motion and that the Strouhal number in the wake was about 0.1. Different spray breakup models were evaluated by comparing with experimental results 66 refs, 56 figs
Prevention of Computer Worker Health Disturbances Caused by Physical and Physiological Risk

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Pille Viive

2016-10-01

Full Text Available This investigation was carried out in the frames of the Interreg 4A project “Workability and Social Inclusion” headed by the Arcada University of Applied Life. Tallinn University of Technology and Rīga Stradiņš University were involved in the project. A questionnaire based on the Nordic, WAI (Work Ability Index, and Kiva questionnaires was compiled to study psychosocial and physical working conditions at computer-equipped workplaces for 192 workers. The results showed that the computer workers assess their health status considerably high. They are optimistic in solving the problem that the monotonous work with computers will continue and believe that their health status in the future will stay at the same level using the steadily enhancing rehabilitation means. The most injured regions of the body were the right wrist and the neck. The novelty of the study consists in the graphical co-analysis of different groups of questions presented to the workers, which allows to assess the physiological and psychological factors in complex. The rehabilitation means have to be developed and the possibility for rehabilitation must be made available to the greatest possible number of workers. The workers were divided into two groups: Group A, the length of employment with computers under 10 years (included and Group B, having been working with computers over 10 years. These groups were found to differ in the perception of psychosocial risk factors at the workplace. Group B assessments for psychosocial working conditions were better than those of group A. In group B, employees appeared to be more afraid of losing their jobs and therefore they were not so demanding for the work atmosphere as in group A.
Modeling study on the effect of piston bowl geometries in a gasoline/biodiesel fueled RCCI engine at high speed

International Nuclear Information System (INIS)

Li, J.; Yang, W.M.; Zhou, D.Z.

2016-01-01

Highlights: • The RCCI engine fueled with gasoline and biodiesel is simulated. • The effect of piston bowl geometry is investigated. • The throat diameter of a piston can affect combustion process. • SCC shows superiority among three investigated geometries for RCCI combustion. - Abstract: This paper reports the numerical investigation on the effects of three bowl geometries on a gasoline/biodiesel fueled RCCI engine operated at high engine speed. The three bowl geometries are HCC (Hemispherical Combustion Chamber), SCC (Shallow depth Combustion Chamber) and OCC (Omega Combustion Chamber). To simulate the combustion in an RCCI engine, coupled KIVA4–CHEMKIN code was used. One recently developed reaction mechanism, which contains 107 species and 425 reactions, was adopted in this study to mimic the combustion of gasoline and biodiesel. During the simulation, the engine speed was fixed at 3600 rpm. The low reactivity fuel gasoline was premixed with air with energy percentages of 20% and 40%; accordingly, to maintain the same energy input, the percentages of biodiesel were 80% and 60% (B80 and B60). In addition, the SOI timing was varied at three levels: −11, −35 and −60 deg ATDC for B80 and B60, respectively. With SOI timing of −11 deg ATDC, the combustion is mixing-controlled; in contrast, advancing SOI timing to −60 deg ATDC, the combustion turns into the reactivity-controlled. Comparing the results on combustion characteristics, engine performance and emissions among different bowl geometries, it is concluded that the original OCC design for Toyota diesel engine is better for mixing-controlled combustion; whereas, SCC is the most suitable piston design for RCCI combustion among the three selected geometries under the investigated operating conditions of the engine. With SCC, better combustion and performance can be achieved while maintaining relatively lower CO, NO and soot emissions.
Inpatient care of patients with type 1 diabetes mellitus by duration of diabetes and sex: A nationwide population-based longitudinal study

Directory of Open Access Journals (Sweden)

Markku J Akkanen

2009-07-01

Full Text Available Markku J Akkanen1,4, Sirkka-Liisa Kivelä2, Veli Koistinen3, Harri Sintonen4, Jaakko Tuomilehto41Welfare and Health Promotion Division, Department of Chronic Disease Prevention, Diabetes Prevention Unit, National Institute for Health and Welfare (THL, Helsinki, Finland; 2Turku University of Central Hospital, Turku, Finland; 3Department of Health Policy and Management, University of Kuopio, Kuopio, Finland; 4Department of Public Health, University of Helsinki, Helsinki, FinlandAims: To describe hospitalizations of a cohort of patients with type 1 diabetes mellitus (T1DM during 1973–1998 in the main complication groups by sex and T1DM lasting on average 9.5 or 16.5 years.Material and methods: The population (N = 5166 consisted of all Finnish patients with T1DM diagnosed before the age of 18 years between 1965–1979, derived from the Finnish population-based register of T1DM patients. Data on hospitalizations were obtained from the Finnish Hospital Discharge Register.Results: In the early stages of T1DM, the majority of the use of hospitalizations was due to the treatment of T1DM without complications. Enormous increases were found for complications when diabetes lasted longer (from 9.5 to 16.5 years. For women, the yearly number of bed-days for renal complications increased 4.8-fold, for peripheral vascular disease 4.3-fold, and for ophthalmic complications 2.5-fold. For men, the corresponding increases were as follows: 5-fold, 6.9-fold, and 2.5-fold. The yearly number of bed-days for nephropathy increased 7-fold. Bed-days for T1DM without complications dropped dramatically. The length of stay in hospitalizations decreased notably, but hospital visits increased when the duration of T1DM increased.Conclusions: Hospitalizations due to complications substantially increase with aging of T1DM patients. Prevention of T1DM is strongly needed. Keywords: T1DM, inpatient care, hospitalizations, complications
Parental Identity and Its Relation to Parenting and Psychological Functioning in Middle Age

Science.gov (United States)

Fadjukoff, Päivi; Pulkkinen, Lea; Lyyra, Anna-Liisa; Kokko, Katja

2016-01-01

SYNOPSIS Objective. This article focuses on identity as a parent in relation to parenting and psychological functioning in middle age. Design. Drawn from the Jyväskylä Longitudinal Study of Personality and Social Development, 162 participants (53% females) with children (age 36), represented the Finnish age-cohort born in 1959. Parental identity was assessed at ages 36, 42, and 50. Results. In both women and men, parental identity achievement increased from age 36 to 42 and remained stable to 50. The level of parental identity achievement was higher in women than in men. Achievement was typical for women and foreclosure for men. Participants’ education, occupational status, and number of offspring were not related to parental identity status. As expected, parental identity achievement was associated with authoritative (indicated by higher nurturance and parental knowledge about the child’s activities) parenting style. No significant associations emerged between parental identity foreclosure and restrictiveness as an indicator of authoritarian parenting style. The diffused men outscored others in parental stress. Achieved parental identity was related to generativity in both genders and to higher psychological and social well-being in men. Conclusions. At present, many parenting programs are targeted to young parents. This study highlighted the importance of a later parenting phase at around age 40, when for many, the children are approaching puberty. Therefore, parenting programs and support should also be designed for middle-aged parents. Specifically men may need additional support for their active consideration and engagement in the fathering role. © Päivi Fadjukoff, Lea Pulkkinen, Anna-Liisa Lyyra, and Katja Kokko This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-No Derivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and
Parental Identity and Its Relation to Parenting and Psychological Functioning in Middle Age.

Science.gov (United States)

Fadjukoff, Päivi; Pulkkinen, Lea; Lyyra, Anna-Liisa; Kokko, Katja

2016-04-02

Objective. This article focuses on identity as a parent in relation to parenting and psychological functioning in middle age. Design. Drawn from the Jyväskylä Longitudinal Study of Personality and Social Development, 162 participants (53% females) with children (age 36), represented the Finnish age-cohort born in 1959. Parental identity was assessed at ages 36, 42, and 50. Results. In both women and men, parental identity achievement increased from age 36 to 42 and remained stable to 50. The level of parental identity achievement was higher in women than in men. Achievement was typical for women and foreclosure for men. Participants' education, occupational status, and number of offspring were not related to parental identity status. As expected, parental identity achievement was associated with authoritative (indicated by higher nurturance and parental knowledge about the child's activities) parenting style. No significant associations emerged between parental identity foreclosure and restrictiveness as an indicator of authoritarian parenting style. The diffused men outscored others in parental stress. Achieved parental identity was related to generativity in both genders and to higher psychological and social well-being in men. Conclusions. At present, many parenting programs are targeted to young parents. This study highlighted the importance of a later parenting phase at around age 40, when for many, the children are approaching puberty. Therefore, parenting programs and support should also be designed for middle-aged parents. Specifically men may need additional support for their active consideration and engagement in the fathering role. © Päivi Fadjukoff, Lea Pulkkinen, Anna-Liisa Lyyra, and Katja Kokko This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-No Derivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in
Reservatsioonide lubatavus ning reservatsioonide vastuväidete õiguslik mõju ILC uurimistöö valguses : [bakalaureusetöö] / Marja-Liisa Laatsit ; Tartu Ülikool, õigusteaduskond ; juhendaja: Lauri Mälksoo

Index Scriptorium Estoniae

Laatsit, Marja-Liisa

2009-01-01

ILC = International Law Commission. - Reservatsioonidest tänases teoorias ja praktikas, vastuväidetest reservatsioonide tegemisele, reservatsioonide lubatavusest ja nende õiguslikust mõjust (ILC eriraportöör Pellet̀ettepanekutest, NATO SOFA lepingust)
Experimental study of spray characteristics of biodiesel derived from waste cooking oil

International Nuclear Information System (INIS)

Mohan, Balaji; Yang, Wenming; Tay, Kun Lin; Yu, Wenbin

2014-01-01

Highlights: • B20 and diesel exhibit similar spray tip penetration and angle. • Change in orientation of spray shapes observed with different fuels. • B100 shows poor air fuel mixing compared to B20 and diesel. • Diesel shows higher equivalence ratio compared to B20 and B100. - Abstract: In this study, the fuel spray characteristics and air-fuel mixing process of waste cooking oil biodiesel (B100) and its blend with diesel (B20) were investigated and compared with diesel fuel. Spray characteristics such as spray tip penetration, spray angle, spray velocity and spray morphology were investigated under high injection and ambient pressure conditions using a constant volume spray chamber. The air-fuel mixing process was analysed using empirical relations like fuel volume, mass of air entrained within the spray and equivalence ratio. The results shows that B100 has higher spray tip penetration and velocity but narrow spray angles due to high viscosity and large momentum possessed by B100 compared to B20 and diesel fuels. The deviation in spray tip penetration reduces under high ambient pressure. The spray angle shows no change under various injection pressures; however it increases significantly under high ambient pressure. The spray shape is affected by the cavitation inside the injector nozzle holes. The fuel volume and amount of air entrainment within the spray showed that B100 exhibits poor air-fuel mixing compared to B20 and diesel fuels. Nevertheless, the equivalence ratio along the axial direction of spray reveals that the B100 has lean equivalence ratio compared to B20 and diesel fuel due to the presence of inherent oxygen content in its structure. A numerical simulation was conducted using new hybrid spray model implemented in KIVA4 and found that the results obtained from the simulation were in good agreement with the empirical results calculated from the experiments
Simulation and experiment for oxygen-enriched combustion engine using liquid oxygen to solidify CO2

Science.gov (United States)

Liu, Yongfeng; Jia, Xiaoshe; Pei, Pucheng; Lu, Yong; Yi, Li; Shi, Yan

2016-01-01

For capturing and recycling of CO2 in the internal combustion engine, Rankle cycle engine can reduce the exhaust pollutants effectively under the condition of ensuring the engine thermal efficiency by using the techniques of spraying water in the cylinder and optimizing the ignition advance angle. However, due to the water spray nozzle need to be installed on the cylinder, which increases the cylinder head design difficulty and makes the combustion conditions become more complicated. In this paper, a new method is presented to carry out the closing inlet and exhaust system for internal combustion engines. The proposed new method uses liquid oxygen to solidify part of cooled CO2 from exhaust system into dry ice and the liquid oxygen turns into gas oxygen which is sent to inlet system. The other part of CO2 is sent to inlet system and mixed with oxygen, which can reduce the oxygen-enriched combustion detonation tendency and make combustion stable. Computing grid of the IP52FMI single-cylinder four-stroke gasoline-engine is established according to the actual shape of the combustion chamber using KIVA-3V program. The effects of exhaust gas recirculation (EGR) rate are analyzed on the temperatures, the pressures and the instantaneous heat release rates when the EGR rate is more than 8%. The possibility of enclosing intake and exhaust system for engine is verified. The carbon dioxide trapping device is designed and the IP52FMI engine is transformed and the CO2 capture experiment is carried out. The experimental results show that when the EGR rate is 36% for the optimum EGR rate. When the liquid oxygen of 35.80-437.40 g is imported into the device and last 1-20 min, respectively, 21.50-701.30 g dry ice is obtained. This research proposes a new design method which can capture CO2 for vehicular internal combustion engine.
Juhusliku hävimise ja kahjustumise riisiko üleminek müügilepingus üleandmiskohustuse täitmisel : [bakalaureusetöö] / Liisa Ojamaa ; Tartu Ülikool, õigusteaduskond ; juhendaja: Piia Kalamees

Index Scriptorium Estoniae

Ojamaa, Liisa

2010-01-01

Juhusliku hävimise ja kahjustumise riisiko üleminekust valmispanekukohustuse ja kättetoimetamiskohustuse korral, Eesti võlaõigusseadusest ja ÜRO konventsioonist kaupade rahvusvahelise ostu-müügi lepingute kohta (CISG)
Prevention of MSDs and psychological stress at computer-equipped workplaces

Directory of Open Access Journals (Sweden)

Karin Reinhold

2014-12-01

Full Text Available Introduction: The human body responds to stress-factors through four systems - central nervous, autonomic nervous, endocrine and immune - which are constantly interacting as a complex network. The main stress-factor at the computer-equipped workplaces is a poorly designed workplace, specifically the positioning of equipment on and around the workstation. The number of occupational diseases among office workers is the specific indicator of influencing of existing hazards and risk factors on the worker in the work environment. Objective: To find out the health disturbances and to make the suggestions for health promotion for computer workers. Methods: Over 400 computer workers' working conditions were measured with subsequent measuring equipment; the fatigue of muscles was measured with myometer; the investigation of the workers' opinion on working conditions based on Nordic, Work ability index (WAI and Kiva questionnaire was carried out. The workers were divided into different groups by the age (A: under 40 years and B: over 40 years. This paper investigates the satisfaction of computer workers with their working conditions. Results: According to the results of Nordic and WAI questionnaires, musculoskeletal disorders (MSDs were observed by 53.6%; the cardiovascular disturbances by 20.4% and visual disturbances by 16.7% of the respondents in group A (under 40 years. In group B, MSDs were observed by 50.1%; cardiovascular disorders by 45.7% and visual disturbances by 23.2% of the respondents (over 40 years. Muscle and joint complaints were reported only by 19.7% of workers. The majority of the respondents declared the existence of two or more local pain points. Neck, shoulder, wrist and back pain were registered as the main complaints. Conclusions: The results of measurements of physical workplaces revealed that in some offices there are deficiencies in lighting, problems with stuffy air (high CO2 value and low relative humidity value on cold
Modeling analysis of urea direct injection on the NOx emission reduction of biodiesel fueled diesel engines

International Nuclear Information System (INIS)

An, H.; Yang, W.M.; Li, J.; Zhou, D.Z.

2015-01-01

Highlights: • The effects of urea direct injection on NO x emissions reduction was investigated. • Aqueous urea solution was proposed to be injected after the fuel injection process. • The optimized injection strategy achieved a reduction efficiency of 58%. • There were no severe impacts on the CO emissions and BSFC. - Abstract: In this paper, a numerical simulation study was conducted to explore the possibility of an alternative approach: direct aqueous urea solution injection on the reduction of NO x emissions of a biodiesel fueled diesel engine. Simulation studies were performed using the 3D CFD simulation software KIVA4 coupled with CHEMKIN II code for pure biodiesel combustion under realistic engine operating conditions of 2400 rpm and 100% load. The chemical behaviors of the NO x formation and urea/NO x interaction processes were modeled by a modified extended Zeldovich mechanism and urea/NO interaction sub-mechanism. To ensure an efficient NO x reduction process, various aqueous urea injection strategies in terms of post injection timing, injection angle, and injection rate and urea mass fraction were carefully examined. The simulation results revealed that among all the four post injection timings (10 °ATDC, 15 °ATDC, 20 °ATDC and 25 °ATDC) that were evaluated, 15 °ATDC post injection timing consistently demonstrated a lower NO emission level. The orientation of the aqueous urea injection was also shown to play a critical role in determining the NO x removal efficiency, and 50 degrees injection angle was determined to be the optimal injection orientation which gave the most NO x reduction. In addition, both the urea/water ratio and aqueous urea injection rate demonstrated important roles which affected the thermal decomposition of urea into ammonia and the subsequent NO x removal process, and it was suggested that 50% urea mass fraction and 40% injection rate presented the lowest NO emission levels. At last, with the optimized injection
Development of reduced kinetic schemes for the description of pollutants formation in combustion; Mise au point de schemas cinetiques reduits pour decrire la formation des polluants dans la combustion

Energy Technology Data Exchange (ETDEWEB)

Ferrendier, M.

1998-12-17

The typical dimensions of details chemical-kinetic mechanisms proposed to describe combustion systems are too large for multi-dimensional computations applications. The objective of reduction methods is to construct low-dimensional schemes that can be incorporated in industrial codes. We consider here a new class of methods based on a mathematical analysis of the detailed chemical-kinetic mechanisms, and the identification of a low-dimensional manifold that describes the slow dynamics of the chemical system. The mathematical reduction methods considered in this work are the Intrinsic Low Dimensional Manifold (ILDM) method proposed by Maas and Pope (1992), and the Singular Perturbation (PS) method proposed by Duchene and Rouchon (1996). The domain of validity of the ILDM or PS reduced schemes is limited to a high temperature domain T {>=} T{sub c}. This result suggests that ignition is out of the domain of application of reduced mechanisms. In the case of a CO/H{sub 2}/N{sub 2}-air combustion system, and using a two-dimensional slow manifold, we find T{sub c} {approx} 750 K. We also find that for that particular system, 2 progress variables are sufficient for an accurate description of the structure and the velocity of a laminar premixed flame. In the case of a CH{sub 4}-air combustion system, and using a two-dimensional slow manifold, we find T{sub c}{approx}1500 K. We also find that 2 progress variables are insufficient for an accurate description of the structure and the velocity of a laminar premixed flame. The study of the different NO formation mechanisms show that the thermal NO mechanism (the Zeldovich mechanism) is dominant for premixed configurations with lean or stoichiometric conditions ({phi}){>=}1.2), and for non-premixed configurations at high temperatures and high pressures (T{sub air}{>=}1000 K, P {>=} 10 bars). Under these conditions, the MPKIVA sub model used to describe NO formation in the IFP version of the KIVA code performs reasonably well. An
Geophysical Exploration of Tyuonyi Pueblo in Bandelier National Monument, New Mexico, USA

Science.gov (United States)

Sica, C.; Graham, D.; Peacock, E.; Suen, C.; Creighton, A.; Carchedi, C.; Feucht, D. W.; Civitello, J. A.; Jarret, J.; Martin, C.; Ferguson, J. F.; McPhee, D.; Pellerin, L.

2017-12-01

The Summer of Applied Geophysical Experience (SAGE) class of 2017 carried out near-surface geophysical investigations of the Tyuonyi Pueblo of Bandelier National Monument, New Mexico in order to aid trail planning and identification of archeological features that could potentially be impacted. Tyuonyi is located in Frijoles Canyon, carved by the Rito de los Frijoles, between the SE flank of the Jemez Mountains and the Rio Grande, and contains pueblo room blocks, kivas and cavates that were occupied by ancestral Puebloans between 1350 and 1550 CE. SAGE collected seismic refraction, magnetic, electromagnetic (EM) and GPR data along targeted profiles and grids north and east of Tyuonyi Pueblo. Two 30 X 30 m grids of GPR data were recorded along 1-m spaced lines using the 250 MHz Sensors and Software NOGGIN® 250 Smart Tow and processed using the EKKO Project V5 program. Seismic refraction data were collected using a 48-channel Geometrics Strataview recorder and seven spreads with 0.5 m geophone spacing, a 6 m shot point interval, and a hammer source. Shot point offsets between 0.5 m and 48 m provided overlapping subsurface coverage. Seismic data from SAGE 2016 and 2017 were merged into a 168 m-long profile. Magnetic data were collected along 1-m spaced N-S lines in two 30 X 30 m grids and along the seismic line using a Geometrics 858 cesium vapor magnetometer. In addition, EM data were collected using a Geonics, EM-31 system along the seismic line. A velocity model was created to fit the seismic travel times. The GPR images and seismic model can be used to interpret the Quaternary geology of the site. These data trace incision of the Rito de los Frijoles into the Bandelier Tuff over several stages of the canyon development. The seismic model indicates a number of narrow, shallow channels carved into a broader strath. Holocene alluvial terrace deposits overlie the Bandelier Tuff surface, and the Tyuonyi Pueblo was constructed on top of the highest terrace. On the north
Mesure et modélisation multidimensionnelle des transferts thermiques gaz-paroi dans le cas des moteurs à allumage commandé Measurement and Multidimensional Modeling of Gas-Wall Heat Transfers in Spark-Ignition Engines

Directory of Open Access Journals (Sweden)

Gilaber P.

2006-11-01

Full Text Available A cette fin, deux étapes de recherche ont été mises en oeuvre : une phase expérimentale et une phase calcul. Dans la phase expérimentale, des mesures ont été faites sur un moteur monocylindre équipé de flux-mètres à réponse rapide. Chaque flux-mètre est composé d'un cylindre d'acier, contenant deux thermocouples. Dans le but de montrer l'influence de l'aérodynamique sur les échanges thermiques, un anémomètre à Laser a été utilisé à l'aide d'une entretoise placée entre culasse et cylindre. L'entretoise comportait deux hublots et deux flux-mètres permettant la mesure simultanée des flux thermiques et des paramètres aérodynamiques à l'extérieur de la couche limite. Deux flux-mètres supplémentaires ont été placés dans la culasse et le système d'acquisition permettait d'enregistrer simultanément dix voies de mesure à chaque degré vilebrequin, parmi lesquelles deux composantes de vitesse et la pression cylindre. Une étude paramétrique a révélé les tendances suivantes : - les pertes globales aux parois au cours d'un cycle thermodynamique diminuent lorsque le régime augmente, mais la valeur maximale des flux locaux augmente en raison de l'élévation du niveau de turbulence; - le remplissage a peu d'effet sur l'aérodynamique; son influence sur les transferts thermiques est due principalement à l'augmentation de la densité des gaz, qui se traduit par une augmentation des flux. Dans la phase calcul, deux idées de base ont guidé notre travail : - pour des raisons de temps de calcul prohibitif, il est impossible de mailler la couche limite; les échanges thermiques ont donc été estimés à l'aide d'une loi de paroi; - on fait l'hypothèse que les champs locaux de densité, vitesse et turbulence conditionnent fortement les flux thermiques; ce seront les paramètres de la loi de paroi. Dans cet esprit, le modèle de transferts thermiques de DIWAKAR a été introduit dans le code multi-dimensionnel KIVA. Une
Kohustuslik kohtueelne menetlus halduskohtusse pöördumisel vangistusseaduse § 1¹ lõike 5 ja lõike 8 näitel : [magistritöö] / Maarja-Liisa Käärid ; Tartu Ülikool, õigusteaduskond ; juhendaja: Kalle Merusk

Index Scriptorium Estoniae

Käärid, Maarja-Liisa

2010-01-01

Kohustusliku kohtueelse menetluse olemusest ja vastavusest EV põhiseadusele, efektiivsusest ja vastavusest eesmärgipärasusele, kaebuse lubatavusest ning menetlemise võimalikkuse problemaatikast kohtupraktikas
Confident but not theoretically grounded – experienced simulation educators’ perceptions of their own professional development

Directory of Open Access Journals (Sweden)

Allvin R

2017-01-01

Full Text Available Renée Allvin,1 Magnus Berndtzon,2 Liisa Carlzon,3 Samuel Edelbring,4,5 Håkan Hult,6 Magnus Hultin,7 Klas Karlgren,5,8 Italo Masiello,9 Marie-Louise Södersved Källestedt,10 Éva Tamás,11 1Clinical Skills Centre, Faculty of Medicine and Health, School of Medical Sciences, Örebro University, Örebro, 2Metodikum – Skill Centre of Medical Simulation Region County Jönköping, Jönköping, 3Simulation Centre West, Department of Research, Education and Development, Sahlgrenska University Hospital, Gothenburg, 4Department of Medical and Health Sciences, Faculty of Medicine and Health Sciences, Linköping University, Linköping, 5Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Stockholm, 6Institute of Medicine and Health, Medical Faculty, Linköping University, Linköping, 7Department of Surgical and Perioperative Sciences, Anaesthesiology and Intensive Care, Medical Faculty, Umeå University, Umeå, 8Department of Research, Education and Development and Innovation, Södersjukhuset Hospital, Stockholm, 9Department of Clinical Science and Education, Karolinska Institutet, Södersjukhuset Hospital, Stockholm, 10Clinical Skills Centre, Centre for Clinical Research, Uppsala University, Västerås, 11Department of Cardiovascular Diseases, Institute of Medicine and Health, Medical Faculty, University of Linköping, Linköping, Sweden Background: Medical simulation enables the design of learning activities for competency areas (eg, communication and leadership identified as crucial for future health care professionals. Simulation educators and medical teachers follow different career paths, and their education backgrounds and teaching contexts may be very different in a simulation setting. Although they have a key role in facilitating learning, information on the continuing professional development (pedagogical development of simulation educators is not available in the literature. Objectives: To explore changes in
Modeling of Diesel Fuel Spray Formation and Combustion in OpenFOAM

Energy Technology Data Exchange (ETDEWEB)

Koesters, Anne

2012-07-01

The formation, ignition, and combustion of fuel sprays are highly complex processes and the available models have various shortcomings. The development and application of multidimensional CFD models, that describe the different phenomena have rapidly increased through the use of commercial and public software (e.g. Star-CD, KIVA, FIRE and OpenFOAM). The general approach to spray modeling is given by the Eulerian-Lagrangian method, where the gas phase is modeled as a continuum and the droplets are tracked in a Lagrangian way. The accuracy and robustness of today's spray models vary substantially and spray penetration simulations and the levels of spray-generated turbulence are dependent on the discretization. The work presented here deals with the prediction of spray formation and combustion with improved models implemented in the free, open source software package OpenFOAM. The VSB2 spray model was implemented and tested under varying ambient conditions. The design criteria of the model were to be unconditionally robust, have a minimal number of tuning parameters, and be implementable in any CFD software package supporting particle tracking. The main difference between the VSB2 spray model and standard spray models is how the interaction between the liquid fuel and hot gas phase is modeled. In the VSB2 spray model, a 'blob' is defined, containing differently sized droplets; instead of a parcel containing equally sized droplets. Another feature is the definition of a bubble surrounding the blob. The blob just interacts with the gas phase in the bubble instead of with the gas phase in the whole grid cell. The idea is to reduce grid dependency. Furthermore, equilibrium between the blob and the bubble is ensured, which makes the model very robust. Results of spray penetration simulations are compared with data obtained from experiments done at Chalmers Univ. of Technology and with experimental data published by Siebers and Naber from Sandia National

Megacities and Large Urban Complexes - WMO Role in Addressing Challenges and Opportunities

Science.gov (United States)

Terblanche, Deon; Jalkanen, Liisa

2013-04-01

Megacities and Large Urban Complexes - WMO Role in Addressing Challenges and Opportunities Deon E. Terblanche and Liisa Jalkanen dterblanche@wmo.int ljalkanen@wmo.int World Meteorological Organization, Geneva, Switzerland The 21st Century could amongst others, become known as the century in which our species has evolved from Homo sapiens to Homo urbanus. By now the urban population has surpassed the rural population and the rate of urbanization will continue at such a pace that by 2050 urban dwellers could outnumber their rural counterpart by more than two to one. Most of this growth in urban population will occur in developing countries and along coastal areas. Urbanization is to a large extent the outcome of humans seeking a better life through improved opportunities presented by high-density communities. Megacities and large urban complexes provide more job opportunities and social structures, better transport and communication links and a relative abundance of physical goods and services when compared to most rural areas. Unfortunately these urban complexes also present numerous social and environmental challenges. Urban areas differ from their surroundings by morphology, population density, and with high concentration of industrial activities, energy consumption and transport. They also pose unique challenges to atmospheric modelling and monitoring and create a multi-disciplinary spectrum of potential threats, including air pollution, which need to be addressed in an integrated way. These areas are also vulnerable to the changing climate and its implications to sea-level and extreme events, air quality and related health impacts. Many urban activities are significantly impacted by weather events that would not be considered to be of high impact in less densely populated areas. For instance, moderate precipitation events can cause flooding and landslides as modified urban catchments generally have higher run-off to rainfall ratios than their more pristine rural
发动机早喷过程中燃油喷射混合的大涡模拟%Large eddy simulation for fuel injection and mixing of early-injection in diesel engine

Institute of Scientific and Technical Information of China (English)

周磊; 解茂昭; 贾明; 史俊瑞

2012-01-01

The feasibility of large eddy simulation (LES) for predicting fuel injection and mixing of early injection in diesel engine was studied. LES turbulent model was implemented into KTVA3V code to make numerical simulation of the atomization and evaporation processes of early injection timing in a constant volume chamber and a ford high-speed direct-injection diesel engine. The results show that the predictive vapor mass fraction and liquid penetration using LES is obviously better than those using RANS model and good agreement with the experiment results. In combustion chamber, the sub-grid turbulent kinetic energy and viscosity using LES is less than those of the RANS models', and with the increase of time, the sub-grid turbulent kinetic energy and viscosity also increase and concentrate on the spray area. Meantime, advancing the injection timing can help to achieve more homogenous mixture between the fuel and ambient gas. The distribution of the mixture is more uniform and the tree-dimension and disorder structures are more obvious using LES model. Compared to RANS model, LES model can better reflect the real spray flow field of early injection process in diesel engine.%对大涡模型在预测发动机早喷中燃料和空气混合过程的适用性进行研究.将大涡模拟(LES)湍流模型加入KIVA3V程序中,对定容弹中燃油短喷以及在1台Ford高速直喷柴油发动机中的早喷过程进行数值模拟.研究结果表明:LES模型预测的喷雾浓度分布和贯穿距与实验结果较相符,明显比RANS模型的优；在燃烧室中LES模型得到的湍动能和黏性都要比RANS模型的小,而且随着喷射时间的增加,亚网格湍动能和黏性都增加并集中在喷射区域；同时,喷油时刻提前有利于燃油与空气的均质混合,LES模型得到的混合气分布更加均匀,三维紊乱的结构更加明显；与RANS模型相比,ES模型更能真实反映柴油机早喷过程中的喷雾流场.
Développement d'un moteur 4-soupapes fonctionnant en mélange dilué. Une nouvelle approche basée sur l'optimisation de l'aérodynamique interne Application of Flow Field Optimization to Lean Burn Engine Development. A New Approach Based on Internal Flow Field Optimization

Directory of Open Access Journals (Sweden)

Henriot S.

2006-11-01

emissions, and in lower specific fuel consumption. On the other hand, unburnt hydrocarbon (HC emissions generally increase, which implies the use of an oxidation catalyst if the antipollution standards become too severe. The first phase was to analyze the interactions between fluid dynamics and combustion, which determine the capability of this engine to run with a lean or dilute mixture. The methodology relies on complementary means :(a Three-dimensional computer code (KIVA. (b Optical diagnostics (Laser Doppler Velocimetry. (c Single-cylinder engine equipped with conventional measurement systems. Three dimensional modeling is used to predict and to optimize fluid motion in the cylinder for different intake configurations. The most important parameters influencing the stability of initial combustion are found to be the direction and magnitude of the mean velocity at the spark location, and the turbulence level. We should note that this flow field optimization is also applicable for operation with any dilute mixture (diluted by exhaust gases for example. The question of the minimization of the cyclic variability remains. The most favorable configuration for lean-burn operation was a pent-roof combustion chamber with a single operating intake valve. Fluid motion in this engine is characterized by the combination of a swirling and a tumbling motion and can be described as an inclined tumble. This motion leads to a flow at the spark plug location directed along the edge of the cylinder head. Moreover, the turbulence level is optimal for a high burning rate and low cycleto-cycle instability. The second phase was to apply this solution to a multicylinder system. The main difficulties came from the variability between cylinders, which was amplified during lean-burn operation. Each cylinder must be independently controlled (spark timing, sequential injection, fuel-air ratio, etc. . Moreover, an increased spark gap is needed in order to reproduce the performance (i. e. efficiency
6th International Symposium on Molecular Allergology (ISMA

Directory of Open Access Journals (Sweden)

Christiane Hilger

2016-10-01

hypoallergenic variant of the major peanut allergen Ara h 2 for allergen-specific immunotherapy Angelika Tscheppe, Dieter Palmberger, Merima Bublin, Christian Radauer, Chiara Palladino, Barbara Gepp, Nina Lengger, Reingard Grabherr, Heimo Breiteneder P36 Mutagenesis of amino acids critical for calcium-binding leads to the generation of a hypoallergenic Phl p 7 variant Marianne Raith, Linda Sonnleitner, Doris Zach, Konrad Woroszylo, Margit Focke-Tejkl, Herbert Wank, Thorsten Graf, Annette Kuehn, Ines Swoboda P37 Are birch pollen allergen immunotherapy induced blocking antibodies protective for cross-reactive allergens? Claudia Asam, Sara Huber, Heidi Hofer, Roland Lang, Thomas Hawranek, Fátima Ferreira, Michael Wallner P38 High success of 58 subcutaneous immunotherapy for pets allergy in a polyallergic cohort of patients: a component resolved individually adapted treatment (CRIAT Fabienne Gay-Crosier P39 Neutrophils are potential antigen presenting cells in IgE- mediated allergy Dominika Polak, Birgit Nagl, Claudia Kitzmüller, Barbara Bohle P40 Characterization of allergen-specific CD8+ T cells in type I allergy Nazanin Samadi, Claudia Kitzmüller, Rene Geyeregger, Barbara Bohle, Beatrice Jahn-Schmid Poster Session 5: Molecular and cellular diagnostic tests P41 Nanofluidic-based biosensors allow quantification of total circulating IgE from a drop of blood in 5 minutes Aurélie Buchwalder, Ariel Gomez, Fabien Rebeaud, Iwan Märki P42 Allergen microarray for the analysis of serum IgE binding profile and allergenic activity Jaana Haka, Liisa Hattara, Marika Heikkinen, Merja H Niemi, Juha Rouvinen, Petri Saviranta, Pekka Mattila, Kristiina Takkinen, Marja-Leena Laukkanen P43 Generation of a well-characterized panel of periplaneta americana allergens for component resolved diagnosis Stephanie Eichhorn, Isabel Pablos, Bianca Kastner, Bettina Schweidler, Sabrina Wildner, Peter Briza, Jung-Won Park, Naveen Arora, Stefan Vieths, Gabriele Gadermaier, Fatima Ferreira P44 Improved

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