Priit Pensa Tartu Veeriku Kool http://www.geo.ut.ee/kooligeo/loodus/rohtlad.htm 8. Name some temperate grassland plants. (vt. ka õpik lk 64-65) Rhubarb, sweet vernal, Indian grass, purple coneflower, pampas grass 9. Describe the soil of temperate grassland. (vt. õpik lk 61) The soil of the temperate grasslands is deep and dark. The upper layers are the most fertile because of the buildup of many layers of dead branching stems and roots. This organic mater on the surface and in the dead roots provide a great degree of nourishment for the living plants. 10. Why are temperate grassland soils very fertile? (vt. õpik lk 61) Calfication is the dominat soil-forminf process in semiarid regions. When this process works on loess that itself is rich in calcium, the world’s most fertile soils are created, the chernozems. 11. How are animals adapted to life in temperate grassland? The animals that live in
everything was naturally in motion. In the course of the eighteenth century the notion of progress, of gradual but relentless pursuit of betterment, began to take hold in western thought. It was only natural that the ideas of change and of progress should eventually be applied to the Great Chain of Being. The natural implication of a "dynamic" chain of being was a sort of tree of life, gradually sprouting upward from basic primordial ooze, branching outward into all the varied species on our fine planet, ending with, of course, eighteenth century Man. This could be called evolutionary, but it does not offer a theory of evolution, an order in which evolution took place. It was no longer acceptable to say "God did it". Therefor, if evolution was to ever become a science, a rational explanation had to be offered. Such an explanation was proposed by Jean Babtiste Lamarck toward the end of the eighteenth century, and Lamarck became best
V: 170800 3) Neljaastmelist toru (pipeline) kasutava arvuti peal käivitatakse järgmised käsud: Add #68,R0,R5 Mul #92,R4,R1 Add #$24,R4,R3 Add R0,R4,R5 Registrite R0 ja R4 sisu enne programmi käivitamist on vastavalt 396 ja 1488.Milline on seitsmenda takti lõpuks puhvri B3 sisu, kui see protsessor andmete edastamise (operand forwarding) tehnikat ei kasuta? V: 1524 4) Oletame, et programmi dünaamilises töövoos on 24% hargnemise käske. Kasutatakse hargnemise ajatamist (delayed branching) ühe ajatuspesaga (delay slot). Mitu korda kiireneb sellise programmi käivitamine, kui kompilaator suudab ajatuspesa täita 81% juhtudest (võrreldes ajatuspesa kasutamata jätmise olukorraga)? V: 1,19 5) Oletame, et programmi dünaamilises töövoos on 23% hargnemise käske. Kasutatakse hargnemise ajatamist (delayed branching) kahe ajatuspesaga (delay slot). Mitu korda kiireneb sellise programmi käivitamine, kui kompilaator suudab
Cell bodies of the motoneurons are in the spinal cord or brain, and their long axons have terminal branches whose final tips contact individual muscle cells. When a motoneuron fires, a chemical event is produced at its axon tips which causes the muscle fibers to contract. · Interneurons: vast majority. They have a functional position that is between sensory and motoneurons. They come in many shapes and forms. They usually show considerable branching, which produces enormous number of synaptic contacts. What happens when a neuron is aroused from rest? The surface of the fiber is stimulated by means of a third microelectrode which applies a brief electrical pulse. This pulse reduces the potential across the membrane for a brief instant. If the pulse is weak, nothing further will happen; there is no impulse. If the strength of the pulse is slowly increased, the resting potential drops still more, but there's no impulse
uses carbon dioxide, water and chemicals like ammonia to make food - these bacteria are called nitrogen fixers and include the bacteria found living in legume roots and in ocean vents). Fungi - is a member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds (British English: moulds), as well as the more familiar mushrooms. Actinomycetes - any member of a heterogeneous group of gram-positive, generally anaerobic bacteria noted for a filamentous and branching growth pattern that results, in most forms, in an extensive colony, or mycelium. The mycelium in some species may break apart to form rod- or coccoid-shaped forms. Many genera also form spores; the sporangia, or spore cases, may be found on aerial hyphae, on the colony surface, or free within the environment. Motility, when present, is conferred by flagella. Many species of actinomycetes occur in soil and are harmless to animals and higher plants, while some are important pathogens, and many
ulatuslikud, et viivad uue liigi tekkele. Uute liikide tekkimisel eristatakse kahte vormi. Ühel juhul toimub liigisisene areng kindlas suunas ning vana liik asendub uuega. Sellist liigitekke vormi nimetatakse füleetiliseks liigitekkeks (phyletic specification). Teisel juhul areneb eellasliigist kaks või enam uut liiki ning need rikastavad Maa liigilist koosseisu. Sellist liigitekke vormi nimetatakse hargnevaks liigitekkeks (branching specification). Edaspidi tulebki peamiselt juttu hargnevast liigitekkest, sest just tänu sellele vormile on meie biosfäär liigiliselt nii mitmekesine. Sugulisel teel paljunevate organismide puhul on uute liikide tekkimisel põhiosa geneetiliste muutuste populatsioonisisesel akumuleerumisel, mille tulemusena kujuneb geneetiliselt lahknenud isendite vahele ristumisbarjäär. Juhul, kui siiski omavahel järglasi saadakse, on need steriilsed. Geneetiline muutlikkus looduslikes populatsioonides
kuueteistkümnendikkoodis arv 20 on kümnendsüsteemis 32. ● R4 sisu on endiselt 1272, järelikult käsk 3: 1272+32=1304, mis salvestatakse puhvrisse B3 (ja registrisse R3). ● Vastus: Kuuenda takti lõpuks on puhvri B3 sisu 1304. d. Oletame, et programmi dünaamilises töövoos on 19% hargnemise käske. Kasutatakse hargnemise ajatamist (delayed branching) ühe ajatuspesaga (delay slot). Mitu korda kiirenev sellise programmi käivitamine, kui kompilaator suudab ajatuspesa täita 85% juhtudest (võrreldes ajatuspesa kasutamata jätmise olukorraga)? Vastus esita kahe komakoha täpsusega. e. Oletame, et programmi dünaamilises töövoos on 21% hargnemise käske.
hetkeväärtusi (sampling). Saadud hetkeväärtused lähevad digitaalsel kujul arvuti mällu, kust neid vajadusel uuesti sisse loetakse. 28.Siirete(hargnemiste) ennustamine (Branch prediction)[1] *RISC-protsessorite poolt arvutitehnikasse toodud konveiertehnika ülima efektiivsusega kaasnevad paraku ka mõned tõsised ja kohati raskesti lahendatavad pudelikaelad: a). Admesõltuvus (data dependancy) b). Tingimuslausete ümberjuhatused (branching pipeline bubbles) *Esimene probleem on lahendatud tehnilise nipiga, mis vajamineva operandi kiirkorras eelmisesse konveieri sammu kannab(internal forwarding), ent teisele probleemile konkreetne lahedus puudub. *Tingimuslausete ümberjuhatustega toimetulekuks on protsessorites sageli realiseeritud eraldi loogikaskeem, mis tegelebgi hargnemiste ennustamisega. Mõningatel juhtudel toimib hargnemise ennustamine staatiliste kriteeriumite baasilt, ent eriti just moodsamates
valesti, tuleb konveier käskudega täis laadida otsast peale, millega kaasneb suur ajakulu siit ka vajadus taolise tehnoloogia järele. RISC protsessori poolt arvutitehnikasse toodud konveiertehnika ülima efektiivsusega kaasnevad kohati raskesti lahendatavad probleemid: a) Andmesõltuvus (Data dependency) lahendatav tehnilise nipiga, mis vajamineva operandi kiirkorras eelmisesse konveieri sammu kannab (interval forwarding)- b) Tingimuslausete ümberjuhatus (Branching pipeline bubbles) toimetulekuks on protsessorites realiseeritud eraldi loogikaskeem, mis tegelebki hargnevuste ennustamisega. Erinevad strateegiad: Fixed, Static ja Dynamic Branch Prediction. 1. MULTIPLEKSOR, DEMULTIPLEKSOR MULTIPLEKSOR (MUX) digitaalskeemides kasutatav kommutatsioonielement. 2 n andmesisendit, n kontrollsisendit ja üksainus väljund. Vastavalt juhtsignaalile kommuteeritakse multipleksori väljundisse signaal ühest infosisendist
transcription ; different tRNAs line up ; A change anticodon translation ; different (amino acid sequence in), enzyme / protein / polypeptide ; 2 max [13] 109. (a) any two of the following (monomer) not glucose ; contains nitrogen ; contains, sulphur ; AVP ; R ref to branching 2 max (b) amount of glycoprotein varies (in different cells) ; (cells carry out) endocytosis to different extents ; cells have different life spans / example ; no time for polysaccharide to accumulate in short lived cells ; number / role, of lysosomes not same in all cell types ; AVP ; 1 max
Sink’s increasing interest in “pure” sound led him in 1969 to experiments in instrumental theatre. With different chamber ensembles he reached the purely phonetic, unconnected syllables in the manner of John Cage. This was a sign of arriving at a certain creative vacuum. We may draw some parallels between the music of Sink and Pärt in that period. Both began in the neoclassical manner and reached novel methods of composition, but at the end of the Sixties, a sharp branching took place. Sink continued with his dodecaphonic works for some time. Pärt, composing his Third Symphony, reached again for simplicity, sincerity and depth of expression but in a qualitatively novel level. 1 Socialist Musical Culture (Moscow: Muzyka Publishers, 1974) 257. Even when using different novel means Pärt showed himself as an artist with the strong backbone of a symphonist. With his Concerto for Strings (1975)1, Sink turned to a new path. Actually, the
and Dorothy is left behind, apparently stuck in the Special World. Many heroes have tried to return using familiar means — old crutches and dependencies. But they find the old ways as artificial and difficult to control as the Wizard's hot-air balloon. Dorothy, guided by her instincts (the dog) knows deep down that this is not the way for her. Yet she is ready to take The Road Back, and keeps looking for the proper branching of the path. Heroes gather up what they have learned, gained, stolen, or been granted in the Special World. T h e y set themselves a new goal, to escape, find further adventure, or return home. But before any o f those goals are achieved, there is another test to pass, the final exam of the journey, Resurrection. 193 T H E W R I T E R ' S JOURNEY ~ T H I R D EDITION
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