2,048,004 research outputs found
An algorithm for generating response surface split-plot designs
No full textM.PhilIn an industrial experiment, the presence of hard-to-change factors may
force the experimenter to use a split-plot type experimental structure. The
corresponding Response Surface model then is a linear mixed model. Different
design methodologies and estimation techniques are available in the
literature, for constructing a Response Surface split-plot design and for estimating
the variance components of the model. We discuss the need for
developing a new design construction methodology and present an algorithm
for generating a D-optimal Response Surface split-plot design such that it
has pre-specified numbers of degrees of freedom for estimating the variance
components using the randomization based approach. An advantage of this
approach is that it gives pure-error estimates of the variance components
Practical inference from industrial split-plot designs.
No full textMany industrial response surface experiments are deliberately not conducted in a completely randomized fashion. This is because some of the factors investigated in the experiment are hard to change. The resulting experimental design then is of the split-plot type and the observations in the experiment are in many cases correlated. A proper analysis of the experimental data therefore is a mixed model analysis involving generalized least squares estimation. Many people, however, analyze the data as if the experiment was completely randomized, and estimate the model using ordinary least squares. The purpose of the present paper is to quantify the differences in conclusions reached from the two methods of analysis and to provide the reader with guidance for analyzing split-plot experiments in practice. The problem of choosing the number of degrees of freedom for significance tests in the mixed model analysis is discussed as well.Containment method; Data; Design; Experimental design; Factors; Fashion; Generalized least squares; Least-squares; Method of Kenward and Roger; Methods; Model; Ordinary least squares; Residual method; Satterthwaite's method; Split-plot experiment; Squares;
A vehicle routing model with split delivery and stop nodes
No full textIn this work, a new variant of the Capacitated Vehicle Routing Problem (CVRP) is presented where the vehicles cannot perform any route leg longer than a given length L (although the routes can be longer). Thus, once a route leg length is close to L, the vehicle must go to a stop node to end the leg or return to the depot. We introduce this condition in a variation of the CVRP, the Split Delivery Vehicle Routing Problem, where multiple visits to a customer by different vehicles are allowed. We present two formulations for this problem which we call Split Delivery Vehicle Routing Problem with Stop Nodes: a vehicle flow formulation and a commodity flow formulation. Because of the complexity of this problem, a heuristic approach is developed. We compare its performance with and without the stop nodesSplit delivery vehicle routing problem, Stop node, Granular neighborhood, Tabu search
A CONTRIBUTION TO AN EARLY ROMANESQUE SCULPTUE WORKSHOP IN SPLIT
No full textU članku je provedena stilska i ikonografska analiza konzole s prikazom lava koja
je kao spolij bila ugrađena na zabatu kuće Mangjer u Splitu. Kuća se nalazila na
križanju Manđerove i Bribirske ulice. Nakon njezina rušenja, konzola je prenesena
u Samostan sestara milosrdnica svetog Vinka Paulskog u Splitu, gdje se i danas
čuva. Izvorni arhitektonski kontekst konzole nije poznat. Tipski i stilski srodan joj
je par konzola na portalu crkve svetog Mikule (sv. Nikole) u Velom Varošu u Splitu.
Autorica ih grupira u krug iste ranoromaničke radionice koja je djelovala koncem 11.
i početkom 12. stoljeća. Konzola s kuće Mangjer nastaje nedugo nakon para konzola
sa Svetog Mikule. Izradio ju je majstor koji dobro poznaje potonje konzole, vješto
kopira njihovu kompoziciju i dimenzije. U oblikovanju zahtjevnijih dijelova (poput
lavlje glave ili akantusova lista na konzolici pod lavljom figurom) otkriva nešto slabiji
oblikovni kapacitet u odnosu na predložak.In this paper, the stylistic and iconographic analysis of a console with a depiction
of a lion, which was installed as spolia on the gable of the Mangjer house in Split,
was performed. The house was situated at the intersection of Manđerova Street and
Bribirska Street. After its demolition, the console was transferred to the Monastery
of the Sisters of Charity of St. Vincent de Paul in Split, where it is still kept today. The
original architectural context of the console is unknown. In terms of type and style,
this console is similar to a couple of consoles on the portal of the Church of St. Mikula
(St. Nicholas) in Veli Varoš, Split. The author groups them within the same early
Romanesque workshop circle which operated in the late 11th and early 12th centuries.
The console from the Mangjer house was created shortly after the abovementioned
consoles from Saint Mikula. It was made by a master craftsman who had good
knowledge of the latter consoles, skilfully copying their composition and dimensions.
The design of more complex parts (such as the lion’s head or the acanthus leaf on
a small console under the lion’s figure), when compared to the original template,
reveals a lesser design capacity
On Estimates of Split-Ticket Voting: EI and EMax
No full textCho and Gaines have recently criticized work by Burden and Kimball on split-ticket voting in the USA, suggesting that their estimates of the volume of such voting (derived using King�s EI method) across Congressional Districts and States are unreliable. Using part of the Burden-Kimball data set, we report on a parallel set of estimates generated by a different procedure (EMax), which employs three rather than two sets of bounds. The results are extremely similar to Burden and Kimball�s, providing strong circumstantial evidence for their conclusions regarding the impact of campaign spending and other influences on the volume of split-ticket voting
split
No full textpython script to split a single line fasta file with many loci into locus specific fasta file
Split rank of triangle and quadrilateral inequalities
No full textA simple relaxation of two rows of a simplex tableau is a mixed integer set consisting of two equations with two free integer variables and non-negative continuous variables. Recently Andersen et al. [2] and Cornu´ejols and Margot [13] showed that the facet-defining inequalities of this set are either split cuts or intersection cuts obtained from lattice-free triangles and quadrilaterals. Through a result by Cook et al. [12], it is known that one particular class of facet- defining triangle inequality does not have a finite split rank. In this paper, we show that all other facet-defining triangle and quadrilateral inequalities have finite split rank. The proof is constructive and given a facet-defining triangle or quadrilateral inequality we present an explicit sequence of split inequalities that can be used to generate it.mixed integer programs, split rank, group relaxations
ANALIZA ORGANIZACIJSKOG KONCEPTA POSLOVANJA U PODUZEĆU „ENEL SPLIT“ D.O.O. SPLIT : Završni rad
No full textOrganizacija i njezina organizacijska struktura predstavlja jako važan segment svakog
poduzeća pomoću kojeg poslovni subjekt ostvaruje definirane ciljeve i kao rezultat poduzeće
posluje uspješno. Na organizacijsku strukturu mogu utjecati različiti faktori iz unutarnje ili
vanjske okoline kao što su veličina poduzeća, tehnologija, dobavljači, kupci i sl. U radu je
analizirano poduzeće ENEL-SPLIT d.o.o., Split koje ima formiranu funkcijsku organizacijsku
strukturu. Organizacijska struktura poduzeća podijeljena na dva sektora na čijem čelu se nalaze
direktori sektora koji su direktno podređeni glavnom direktoru poduzeća. Odjeli unutar sektora
grupirani su na temelju istih ili sličnih poslova što je glavna karakteristika ove organizacijske
strukture. Budući da poduzeće ENEL-SPLIT d.o.o., Split uspješno izvršava zadane ciljeve uz
optimalno korištenje raspoloživih resursa i bez dodatnih troškova provedenom analizom može
se reći da poduzeće ima efikasnu organizacijsku strukturu koja mu omogućava uspješno
poslovanje.Organization and its organizational structure is a very important segment of every company
through which the business entity achieves defined goals and as a result the company operates
successfully. The organizational structure can be influenced by various factors from the internal
or external environment such as company size, technology, suppliers, customers, etc. Analyzed
company „ENEL-SPLIT d.o.o., Split“ created a functional organizational structure.
Organizational structure is divided into two sectors headed by directors of sectors who are
directly responsible to the CEO of the company. Departments within the sector are grouped
based on same or similar jobs as the main characteristic of selected organizational structure.
Since „ENEL-SPLIT d.o.o., Split“ successfully achieves bussiness results with the optimal use
of available resources and without additional expenses, the company has an efficient
organizational structure allowing them to operate successfully
The D-optimal design of blocked and split-plot experiments with mixture components.
No full textSo far, the optimal design of blocked and split-plot experiments involving mixture components has received scant attention. In this paper, an easy method to construct efficient blocked mixture experiments in the presence of fixed and/or random blocks is presented. The method can be used when qualitative variables are involved in a mixture experiment as well. It is also shown that orthogonally blocked mixture experiments are highly inefficient compared to D-optimal designs. Finally, the design of a split-plot mixture experiment with process variables is discussed.Design; Fixed and random blocks; Minimum support design; Mixture experiment; Optimal; Optimal design; Orthogonal blocking; Process variables; Processes; Qualitative variables; Split-plot experiment; Variables;
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