2,569 research outputs found
Which Kind of Science Is Construction Management?
No full textIt is argued that the mainstream views on the nature of construction management are insufficient, and as one consequence of this, the relevance of construction management has been questioned. As a solution to this situation, construction management is suggested to be repositioned as a design science, rather than as an explanatory science. A historical consideration reveals that design science equals to one of the sciences proposed by Aristotle, however, the suggestion of Aristotle has been forgotten. Thus, there has been a long-standing neglect of the design science, which explains the present fragmentation of this field. It is argued that this redefinition of construction management will solve several problems plaguing this discipline, including the problem of relevance
Drivers for Innovation in Production Management
No full textThe aim of this paper is to examine the effectiveness of innovative programmes in construction. The term 'best practice' is commonly used in industry in to describe and disseminate cases where high levels of performance have been achieved. Several terminologies are used to describe this phenomenon, the best practice being the most widely used term. Best practices usually stimulate a desire in other companies to achieve similar levels of performance or gains that have been obtained by those best practice companies. This desire for better performance commonly triggers an innovation adoption programme by other companies. However, there are two kinds of drivers to innovation adoption: one is usually started by normative pressures applied by customers, suppliers, regulators or senior management. This type of adoption is called push-driven. On the other hand, there is a pull-driven innovation adoption decision, which is triggered strictly by an internal need associated with a performance gap. Based on this background this paper explores the generation, development and adoption of innovative programmes by industry
De Biasi-Lauri reduction for hardness of swapping colors
No full textWe make a recap of De Biasi-Lauri reduction for proving hardness of two problems on restoring corrupted colorings
Morphologic and functional correlates of synaptic pathology in the cathepsin D knockout mouse model of congenital neuronal ceroid lipofuscinosis
No full textMutations in the cathepsin D (CTSD) gene cause an aggressive neurodegenerative disease (congenital neuronal ceroid lipofuscinosis) that leads to early death. Recent evidence suggests that presynaptic abnormalities play a major role in the pathogenesis of CTSD deficiencies. To identify the early events that lead to synaptic alterations, we investigated synaptic ultrastructure and function in presymptomatic CTSD knockout (Ctsd) mice. Electron microscopy revealed that there were significantly greater numbers of readily releasable synaptic vesicles present in Ctsd mice than in wild-type control mice as early as postnatal day 16. The size of this synaptic vesicle pool continued to increase with disease progression in the hippocampus and thalamus of the Ctsd mice. Electrophysiology revealed a markedly decreased frequency of miniature excitatory postsynaptic currents (mEPSCs) with no effect on paired-pulse modulation of the evoked excitatory post synaptic potentials in the hippocampus of Ctsd mice. The reduced mEPSCs frequency was observed before the appearance of epilepsy or any morphologic sign of synaptic degeneration. Taken together, these data indicate that CTSD is required for normal synaptic function and that a failure in synaptic trafficking or recycling may bean early and important pathologic mechanism in Ctsd mice; these presynaptic abnormalities may initiate synaptic degeneration in advance of subsequent neuronal loss
Textualising an Oral Epic – Mission Completed
No full textDr.Phil., docent Lauri Harvilahti is the director of the Folklore Archives of the Finnish Literature Society. His main fields of specialty are systems for the archiving of oral tradition materials, studies on oral and literary epics and questions of ethnic and national identity.In this article the author briefly examines three cases that represent Lauri Honko’s views on the textualisation of oral epics. Furthermore, these examples offer an insight into the concept of the paradigm, which was a key concept for Lauri Honko in the field of folkloristics and in the study of religion. The three case studies are as follows:
1. A literary folk epic based on an oral tradition: the ‘singing scribe’ Elias Lönnrot, who compiled a number of versions of his Kalevala on the basis of Kalevala-metric folk poems.
2. An epic based on multimedia documentation/ fieldwork: the Siri Epic, sung by Gopala Naika. He was an erudite singer, who used to perform the epic on ritual occasions or in the work-song context.
3. An epic based on an archived oral tradition: the long epic of the Setu female singer Anne Vabarna, who produced a twin epic with the encouragement of the collector Armas Otto Väisänen, who dreamt about writing down such an epic.
These three examples all belong to the ‘second life’ category of folklore in the sense that all of them have been produced outside the ‘system of communication’ which maintains an item of folklore in its original setting
Dialogue games : an approach to discourse analysis
No full textThesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 1982.MICROFICHE COPY AVAILABLE IN ARCHIVES AND HUMANITIESVita.Bibliography: leaves 443-488.by Lauri Henrik Carlson.Ph.D
Building of Reinforced Concrete Structural Framing, Comparison and Opportunities for Substitution on the Example of the Main Building of the Estonian National Museum
No full textKäesolevas lõputöös on vastavalt lähteülesandele uuritud Eesti Rahva Muuseumi uue peahoone raudbetoonkarkassi konstruktsioone, toodud võrdlused teiste Eestis ehitatud hoonete analoogsete tehniliste lahendustega ja pakutud alternatiivsed võimalused, mis tagaksid ressursside efektiivsema ning ratsionaalsema kasutamise Eesti Rahva Muuseumi uue peahoone ehitustegevusel. Erinevate konstruktsioonide võrdlusi koostades on selgunud, et Eesti Rahva Muuseumi uue peahoone projekteerijate poolt paljud üledimensioneeritud raudbetoonkonstruktsioonid nõuavad ehitusprotsessis oluliselt suuremat materjali-, aja- ja tööjõukulu, mis muudavad ehituse maksumuse kallimaks. Samuti on loodud arhitektuurelemente, mis paiknevad piiratud juurdepääsuga ruumides ning on vaadeldavad vaid muuseumi töötajate ja ventilatsiooniseadmete hooldajate poolt, kuid ruumide kasutuse seisukohalt on tegemist ebaratsionaalsete lahendustega. Eestis varem ehitatud analoogseid hooneid uurides võib järeldada, et hoonele vajalik stabiilsus ja kandevõime on tagatav saledamate ning kergemate konstruktsioonidega. Saadud kogemuse põhjal saab järeldada, et ehitatava muuseumihoone vahelaed oleks mõistlik teostada monteeritavatest elementidest, mis säästaks aega ja muudaks ehituse tervikuna odavamaks. Ehitustegevuse ajal ilmastikust tingitud mõjutegureid on sel juhul samuti vähem. Lõputöös on ehitatava Eesti Rahva Muuseumi uue peahoone raudbetoonkonstruktsioonidele kulutatavate ressursside maht arvutatud nii reaalsetes tingimustes ehitades kui konstruktsioonide alternatiivset lahendust kasutades ning toodud välja konkreetsed näitajad, mis tõestavad ressursside efektiivsemaid kasutusvõimalusi. Lõputöö koostamisega paralleelselt sama muuseumihoone projekti elluviimine ja igapäevaselt objektil selle hoone praktiline ehitamine on aidanud paremini mõista, kuidas ja kuhu konstruktsioonides koormused liiguvad. Kujunenud oskused võimaldavad tulevikus hoone projekti alusel paremini hinnata projekteeritud kandvate konstruktsioonide lahenduste ratsionaalsust vastavalt hoone otstarbele ja teha koostööd projekteerijatega optimaalsete lahenduste leidmisel. Eesti Rahva Muuseumi uue peahoone keldri kandva konstruktsiooni näitel on käesolevas lõputöös pakutud alternatiivne konstruktsiooniline lahendus, mille kasutamine võimaldaks säästa materjale, rahalisi vahendeid ja lühendada ehituseks kuluvat aega. Eesti Rahva Muuseumi uue peahoone ehitusel objektiinsenerina igapäevaste tööülesannete täitmise ning samaaegselt lõputöö kirjutamise tulemusena on saadud selgemad arusaamad projekteerimise efektiivsusest ja oskused projekteeritud kandvate konstruktsioonide lahenduste ratsionaalsuse hindamiseks. Ebamõistlikke ja kulurohkeid tegevusi ehitusobjektil saab vähendada ja vältida, kui projekteerimisfaasis toimub konstruktsiooniliste lahenduste leidmiseks edukas koostöö ehitajate, projekteerijate ja arhitektide vahel. Tulemuseks on ressursside optimaalne kasutamine, kus materjali-, aja- ja tööjõukulude säästmine võimaldab vähendada ehituse maksumust tervikuna. Ehitustegevusele kuluvat aega saab oluliselt lühendada, kui kasutada tehases toodetud elemente ja neid objektil kokku monteerida. Hoone konstruktsioonide kandevõime peab vastama hoone kasutamise otstarbele, kordades suurema kandevõimega konstruktsioonide projekteerimine ei ole põhjendatud. Efektiivne projekteerimine loob eeldused optimaalsete kuludega hoone ehitamiseks.According to a project specification, “Building of reinforced concrete structural framing, comparison and opportunities for substution on the example on the main building of the Estonian National Museum”, the author of this final paper, studies the structures of reinforced concrete framing of the new main building of the Estonian National Museum, gives examples of comparison with other built in Estonia buildings featuring the analogical technical solutions and provides the alternative solutions that would ensure more efficient and rational use of resources in building activity in regard with the Estonian National Museum. While making comparisons between different constructions, the author realized that a process of building too many over-dimensioned reinforced concrete structures of the new main building of the Estonian National Museum require significantly bigger material consumption, greater time and labour costs which will result in higher cost of construction. At the same time, some architectural elements were designed that locate in the rooms with restricted access and are only visited by the museum personnel and the ventilation equipment maintenance technicians, however, as far as the use of the rooms is concerned, we can talk of impractical solution. Studying some analogical constructions, built in Estonia earlier, one may come to a conclusion that the load bearing capacity and stability required for the building can be ensured by use of lighter and thinner structures. Based upon the acquired data, the author realized that floors of the museum building under construction should be made from assembled elements, which would save time and make the construction of the entire building cheaper. This solution will also result in fewer external weather factors that might affect the construction. The final paper contains a volume of resources going to be spent on construction of the reinforced concrete framing of the new main building of the Estonian National Museum, calculated both for construction in real conditions and adopting the alternative structural solution; the research also contains specific data which gives evidence of the more effective feasibility. Along with the compilation of the final paper the author spent every day on site implementing the design and erecting the museum building, and he began to better realize how and where structural loads spread. For the future the author would be able to better assess the practicability of bearing structure solutions on a basis of project according to the intended use of building and ensure cooperation with design engineers with the aim of finding optimal solutions. On the example of the basement bearing structure of the new main building of the Estonian National Museum the final paper provides the alternative structural solution, the implementation of which would help save materials and finance and reduce the construction time. While performing everyday job assignments on site in course of the construction of the new main building of the Estonian National Museum and writing the final paper at the same time, the author acquired better understanding of the design efficiency and skills of assessing rationality of bearing structures design. Unreasonable and costly activities in situ could be reduced and avoided if in the stage of design the effective cooperation between builders, designers and architects would be ensured with the aim of finding structural solutions. The cooperation might result in the optimal use of resources when saving material, time and labour costs result in reduction of total construction cost. The time spent on construction can be significantly reduced if prefabricated elements are used for assembling in situ. Bearing capacity of structures must correspond to the intended use; engineering design of structures with many-fold bearing capacity is unreasonable. The efficient design will predetermine construction at optimal cost
Newspaper Week; Lauri Foster and Judy Womack
No full textIn Fort Worth during Newspaper Week, little girls sit on furniture made out of stereotype machines and wear hats made out of newspapers, while big girls are at their sewing machines turning out newspaper dresses for the Miss Star-Telegram contest. Lauri Foster, 5, is the daugher of Mr. and Mrs. D. B. Foster of 5741 Jane Anne in Haltom City, and Judy Womack, a Powers model, is a hostess at the Star-Telegram display at Seminary South Shopping Center. Fort Worth Star-Telegram Evening edition October 14, 1968.https://mavmatrix.uta.edu/specialcollections_startelegram1960s/6081/thumbnail.jp
Newspaper Week; Lauri Foster and Judy Womack
No full textIn Fort Worth during Newspaper Week, little girls sit on furniture made out of stereotype machines and wear hats made out of newspapers, while big girls are at their sewing machines turning out newspaper dresses for the Miss Star-Telegram contest. Lauri Foster, 5, is the daughter of Mr. and Mrs. D. B. Foster of 5741 Jane Anne in Haltom City, and Judy Womack, a Powers model, is a hostess at the Star-Telegram display at Seminary South Shopping Center. Fort Worth Star-Telegram Evening edition October 14, 1968.https://mavmatrix.uta.edu/specialcollections_startelegram1960s/6079/thumbnail.jp
Longevidad, fertilidad y fecundidad de Heilipus lauri Boheman (Coleoptera : Curculionidae : Molytinae) en condiciones de laboratorio.
No full textHeilipus lauri Boheman, especie endémica de México, causa daños que oscilan entre el 30 y el 60% en frutos
de aguacate (Persea americana Mill.) y está catalogada como plaga de importancia cuarentenaria. Cualquier
programa de Manejo Integrado de Plagas tiene como sustento el conocimiento de la biología básica de las
especies. La longevidad promedio de adultos de H. lauri, en laboratorio fue de 309.55±86.72 d; en los machos
su longevidad mayor alcanzó los 319.82±88.69 d y las hembras 299.29±86.13 d. El primer deceso ocurrió en
la semana 29, la mortalidad del 50% se registr´o en la semana 36 y finalmente en la semana 65 la mortalidad
fue del 100% de la población estudiada. Durante 56 semanas, 17 hembras ovipositaron 8482 huevos con un
promedio de 498.47±208.85 huevos/hembra y la fertilidad fue variable a lo largo del periodo de oviposición con
un 85.57±7.27 %
- …
