102 research outputs found
Argumentacijski procesi in prepričevalna sredstva v besedilu
Argumentacija je pojmovana kot proces, v katerem tvorcu uspe ali ne uspe pridobiti naslovnika, da sprejme argumente, posledično sprejme tudi sklepe in vse, kar iz predpostavljenega izhaja. S stališča besediloslovja so srgumenti sredstva racionalnega prepričevanja, po drugi strani pa so argumenti lahko tudi sredstva za manipulacijo, in kot taki niso izpostavljeni, pač pa predpostavljeni s stilistično izbiro izrazja ter z retoričnimi taktirkami in strategijo
Analysis of the land general market values in the savinja statistical region
This diploma thesis analyses land prices in the Savinja statistical region. The analysis is performed on the basis of data including advertised and selling prices of wooded areas as well as agricultural and building land. All selling prices also comprise a general market value determined by means of the real estate mass appraisal conducted by the Surveying and Mapping Authority of the Republic of Slovenia (GURS). In the beginning, the treated region is analysed as a whole. To perform a detailed analysis of the relevant land prices and general market values, an analysis at the level of the local communities is also included. The analysis of the discrepancy between advertised and selling prices shows that advertised prices are in all cases higher than the selling ones. However, the analysis of the discrepancy between selling prices and general market values reveals that general market values are lower than relevant selling prices. On the basis of the results, it was established that there exist the biggest discrepancy between advertised prices, selling prices and general market values in the sphere of building land, and the smallest in the one of wooded areas. In general, it can be concluded for all three land development degrees that the highest prices are the advertised ones, followed by selling prices and general market values
Multi-variable models of management in mining
osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnost
ambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -
priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opšte
naučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.
Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,
dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uvek
nemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja u slučaju
kolebanja multimodelskih poredaka alternativa. Prisutni su različiti pristupi u
premoštavanju problema, oni se međusobno ne isključuju, ali ponuđena rešenja nemaju
verifikaciju opšte i univerzalne primenljivosti.
Ovo je uticalo da istraživanja u okviru disertacije, budu usmerena kritičkim stavom prema
pristupima zasnovanim na izboru najboljeg modela za analizu i donošenje upravljačkih
odluka u rudničkim uslovima, drugačijim od uobičajenih industrijskih uslova.
U disertaciji se umesto izbora najboljeg, najpogodnijeg, ili najprikladnijeg modela za
podršku odlučivanju, predlaže proceduralni prilaz. Ovakav prilaz podrazumeva
istovremeno uključivanje u analizu više modela sa korektnom aproksimacijom
multivarijabilnih rudničkih uslova. Pošto cilj nije izbor najboljeg modela već najboljeg
rešenja zadatog problema, prema postavljenom algoritmu postupak izbora najbolje
rangirane alternative ili najboljeg poretka alternativa, zavisi od kolebanja multimodelskih
rangova. U slučaju ekvivalencije multimodelskih rangova, formirani poredak alternativa
prihvata se kao definitivan, u suprotnom konačni poredak alternativa definiše se
ponderisanjem. Ako je cilj najbolja (prvorangirana) alternativa, analiza je opciona zavisno
od stepena ekvivalencije multimodelskih rangova.
Primenljivost i operativnu korisnost postavljenog pristupa, odnosno algoritma
„proceduralnog postupka’’, eksperimentalno je testirana sa četiri modela na šest rudničkih
problema, različite strateške, taktičke ili operativne važnosti. Prosečna korelativnost
multimodelskih i ponderisanih poredaka u 50% testova je u opsegu visoke – jake veze
(0,70-0,89), a u preostalih 50% u opsegu veoma visoke-veoma jake veze (0,90-0,99).
Prosečna korelativnost ponderisanih i multimodelskih poredaka (0,813) veća je za 5,58%
od prosečne korelativnosti (0,77) multimodelskih poredaka.
Primenjeni pristup u istraživanjima i metrični elementi eksperimentalnih rezultata,
obezbeđuju objektivnost sagledavanja i vrednovanja predloženog algoritma za podršku
odlučivanju u multivarijabilnim uslovima. Rezultujući ishodi ovih saznanja, potvrđuju
validnost i praktičnu primenljivost postavljenog algoritma...The decision making and management in mining engineering are characterized by complexity,
variability, ambiguity, sensibility and risk. There are several incentives for such attribution. The
first is multi-variability of environmental conditions and the functional and structural
complexity of mining production systems (Human – nature (working environment) – machine
– narrower and wider environment). The second is related to the non-existing scientific
consensus regarding the assessment on the suitability of decision making and management
model. The third, even if such consensus existed, it is not sure that available models, methods
and tactics would give equivalent results for different mining conditions. The fourth is that
system sciences still do not have generally accepted and practically applicable algorithm for the
selection of the best solution in case of instability of the multi-model order of alternatives.
There are several approaches in overcoming this problem that are not mutually exclusive, but
the offered solutions do not have verification of the general and universal applicability.
This was a determining point that the research within the scope of this dissertation should be
forwarded by a critical standpoint toward approaches based on the selection of the best model
for analysis and management decision making in mining conditions, with major differences
from conditions in other industries.
In the dissertation, opposed to the selection of the best, the most adequate or the most suitable
model for the support to decision making, the procedural approach is recommended. This
approach means to include simultaneous models in the analysis, with accurate approximation
of the multi-variable conditions in mines. Since the goal is not to select the best model, but
rather the best solution for the task in question, the procedure of selection of the best ranked
alternative, or the best order of alternatives is accomplished depends on the instabilities of
multi-model ranks according to the algorithm set. In case of multi-model ranks equivalence, the
order of alternatives is accepted as the final solution, otherwise the process of defining the final
order of alternatives is achieved by pondering. If the goal is the best (the first ranked)
alternative, the procedure is optional, depending on the multi-model ranks equivalence degree.
The applicability and the operative usability of the approach set, i.e. the algorithm of the
“procedural method” developed in this dissertation on four models, is tested with six mining
engineering problems with different strategic, tactical or operational importance. The average
correlation of multi-model and pondered orders for 50% of tests lies within the class of high –
strong connection (0.70-0.89), and for other 50% within the class of very high – very strong
connections (0.90-0.99). The average correlation of the pondered and multi-model orders
(0.813) is larger by 5.58 % than the average correlation (0.77) of the multi-model orders.
The applied approach in the research, and metric elements of the experimental tests results are
ensuring the objective assessment and valuation of the suggested algorithm for the support to
decision making in multi-variable conditions. The outcome of these findings are confirming the
validity and practical applicability of the suggested approach..
Synthesis and Characterization of Novel Ruthenium(III) Complexes with Histamine
Novel ruthenium(III) complexes with histamine [RuCl4(dmso-S)(histamineH)] · H2O (1a) and [RuCl4(dmso-S)(histamineH)] (1b) have been prepared and characterized by X-ray structure analysis. Their crystal structures are similar and show a protonated amino group on the side chain of the ligand which is not very common for a simple heterocyclic derivative such as histamine. Biological assays to test the cytotoxicity of the compound 1b combined with electroporation were performed to determine its potential for future medical applications in cancer treatment
Quasiparticle relaxation dynamics in cuprates and lifetimes of low-energy states: Femtosecond data from underdoped to overdoped YBCO and mercury compounds
We show that low-energy spectral features in the cuprates can be separated
into different components by the measurement of the recombination dynamics of
different low-energy excitations in real-time using femtosecond laser
spectroscopy. Quasiparticle (QP) recombination across the gap and intra-gap
localized state relaxation processes exhibit qualitatively different time- and
temperature-dependences. The relaxation measurements also show the existence of
two distinct coexisting energy gaps near optimum doping and in the overdoped
region, one more or less temperature independent (which exists above and below
Tc) and one which closes at Tc in a mean-field like fashion. Thus systematic
studies of QP recombination as a function of doping and temperature suggest
that the ground state of the cuprates is a mixed Boson-Fermion system with
localised states present over the entire region of the phase diagram.Comment: 4 pages, acepted for publication in Physica C, invited paper given at
M2S, Feb. 20 - 25, 2000, Houston, US
- …