An??lisis de la dimensionalidad en modelos de valor a??adido : estudio de las pruebas de matem??ticas empleando m??todos no param??tricos en TRI

Resumen basado en el de la publicaci??n

Lot sizing and furnace scheduling in small foundries

A lot sizing and scheduling problem prevalent in small market-driven foundries is studied. There are two related decision levels: (I the furnace scheduling of metal alloy production, and (2) moulding machine planning which specifies the type and size of production lots. A mixed integer programming (MIP) formulation of the problem is proposed, but is impractical to solve in reasonable computing time for non-small instances. As a result, a faster relax-and-fix (RF) approach is developed that can also be used on a rolling horizon basis where only immediate-term schedules are implemented. As well as a MIP method to solve the basic RF approach, three variants of a local search method are also developed and tested using instances based on the literature. Finally, foundry-based tests with a real-order book resulted in a very substantial reduction of delivery delays and finished inventory, better use of capacity, and much faster schedule definition compared to the foundry`s own practice. (c) 2006 Elsevier Ltd. All rights reserved.

Jämförande analys mellan svenska och portugisiska reklambyråer. : Saker som är bra att veta om man ska arbeta som grafisk formgivare i Sverige eller i Portugal

If you move from Sweden to Portugal to work as an Art Director at an Ad agency, there are certain things you ought to know. Perhaps even before you decide to move. There are a lot of things that are quite different if you compare Portugal to Sweden, not only the language, but also the design, software, working hours and much more. You have for example two month with double salary, you work till six p.m. and when it comes to maternity leave, you have 100% compensation with no taxes the first four months of every pregnancy. The tasks you have to handle as an Art Director in Portugal may, as in Sweden, be various. The difference is more how you solve your task and what the design looks like. As a Swede in Portugal the solution will probably look like a mixture between the Portuguese “expressive” and the Swedish “clean” design. This degree project discusses questions that might turn up when a Swede gets employed as an Art Director in Portugal. What will the salary be? When, in the morning, is it time to show up at the office? How many weeks of vacations are entitled? There are a lot of distinctions, but also a lot of similarities. The report is mainly based upon the author’s own experiences of the Ad agency McCann-Erickson in Lisbon. The history of McCann-Erickson starts in New York, 1930 and grew rapidly into one of the leading corporation with agencies all over the world. It is still today one of the world’s largest Ad company with clients like Coca-Cola and General Motors, and the slogan “truth well told” still lights up all their agencies after almost a century, just like a leading star.

Förlossningsrädda kvinnors erfarenheter av Aurorasamtal ett till två år efter förlossning

Bakgrund: Av alla gravida kvinnor räknas omkring 5 % lida av svår förlossningsrädsla. Kvinnor med förlossningsrädsla löper högre risk för komplikationer under och efter graviditeten. I Sverige läggs idag mycket resurser på Auroraverksamhet för att hjälpa kvinnor med förlossningsrädsla. Det saknas omfattande utvärdering av Auroraverksamheten. Syfte: Syftet med detta fördjupningsarbete var att undersöka upplevelse och effekt av Aurorasamtal inför förlossning samt upplevelse av den efterföljande förlossningen bland först- och omföderskor. Metod: Studien har en retrospektiv studiedesign där datainsamling skedde via en enkätundersökning. Datamaterialet sammanställdes därefter i SPSS. Resultat: Majoriteten av kvinnorna upplevde att samtalen hjälpte dem till en mer positiv förlossningsupplevelse. Fler förstföderskor än omföderskor önskade planerat kejsarsnitt när de kom till Auroramottagningen. De flesta kvinnor som önskade vaginal förlossning blev vaginalt förlösta. Över hälften av kvinnorna som deltog i studien var mindre rädda för förlossning 1 – 2 år efter förlossningen än de upplevde att de var innan Aurorasamtalet och förlossningen. Konklusion: Aurorasamtal förefaller ha störst betydelse för omföderskor och för de kvinnor som önskar vaginal förlossning.

Multi-population genetic algorithm to solve the synchronized and integrated two-level lot sizing and scheduling problem

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Joint rolling-horizon scheduling of materials processing and lot-sizing with sequence-dependent setups

A lot sizing and scheduling problem from a foundry is considered in which key materials are produced and then transformed into many products on a single machine. A mixed integer programming (MIP) model is developed, taking into account sequence-dependent setup costs and times, and then adapted for rolling horizon use. A relax-and-fix (RF) solution heuristic is proposed and computationally tested against a high-performance MIP solver. Three variants of local search are also developed to improve the RF method and tested. Finally the solutions are compared with those currently practiced at the foundry.

Lot sizing and furnace scheduling in small foundries

A lot sizing and scheduling problem prevalent in small market-driven foundries is studied. There are two related decision levels: (1) the furnace scheduling of metal alloy production, and (2) moulding machine planning which specifies the type and size of production lots. A mixed integer programming (MIP) formulation of the problem is proposed, but is impractical to solve in reasonable computing time for non-small instances. As a result, a faster relax-and-fix (RF) approach is developed that can also be used on a rolling horizon basis where only immediate-term schedules are implemented. As well as a MIP method to solve the basic RF approach, three variants of a local search method are also developed and tested using instances based on the literature. Finally, foundry-based tests with a real-order book resulted in a very substantial reduction of delivery delays and finished inventory, better use of capacity, and much faster schedule definition compared to the foundry's own practice. © 2006 Elsevier Ltd. All rights reserved.

Heuristics and meta-heuristics for lot sizing and scheduling in the soft drinks industry: A comparison study

This chapter studies a two-level production planning problem where, on each level, a lot sizing and scheduling problem with parallel machines, capacity constraints and sequence-dependent setup costs and times must be solved. The problem can be found in soft drink companies where the production process involves two interdependent levels with decisions concerning raw material storage and soft drink bottling. Models and solution approaches proposed so far are surveyed and conceptually compared. Two different approaches have been selected to perform a series of computational comparisons: an evolutionary technique comprising a genetic algorithm and its memetic version, and a decomposition and relaxation approach. © 2008 Springer-Verlag Berlin Heidelberg.

Review of Applied Spatial Data Analysis with R by R. S. Bivand, E. J. Pebesma, and V. Gomez-Rubio

Most authors struggle to pick a title that adequately conveys all of the material covered in a book. When I first saw Applied Spatial Data Analysis with R, I expected a review of spatial statistical models and their applications in packages (libraries) from the CRAN site of R. The authors’ title is not misleading, but I was very pleasantly surprised by how deep the word “applied” is here. The first half of the book essentially covers how R handles spatial data. To some statisticians this may be boring. Do you want, or need, to know the difference between S3 and S4 classes, how spatial objects in R are organized, and how various methods work on the spatial objects? A few years ago I would have said “no,” especially to the “want” part. Just let me slap my EXCEL spreadsheet into R and run some spatial functions on it. Unfortunately, the world is not so simple, and ultimately we want to minimize effort to get all of our spatial analyses accomplished. The first half of this book certainly convinced me that some extra effort in organizing my data into certain spatial class structures makes the analysis easier and less subject to mistakes. I also admit that I found it very interesting and I learned a lot.

Annuaire, ou, Description statistique du département de Lot et Garonne /

Mode of access: Internet.

Incorporating Water Sensitive Urban Design (WSUD) practices into the planning context:the conceptual case for lot-scale developments

In recent decades, a number of sustainable strategies and polices have been created to protect and preserve our water environments from the impacts of growing communities. The Australian approach, Water Sensitive Urban Design (WSUD), defined as the integration of urban planning and design with the urban water cycle management, has made considerable advances on design guidelines since 2000. WSUD stormwater management systems (e.g. wetlands, bioretentions, porous pavement etc), also known as Best Management Practices (BMPs) or Low Impact Development (LID), are slowly gaining popularity across Australia, the USA and Europe. There have also been significant improvements in how to model the performance of the WSUD technologies (e.g. MUSIC software). However, the implementation issues of these WSUD practices are mainly related to ongoing institutional capacity. Some of the key problems are associated with a limited awareness of urban planners and designers; in general, they have very little knowledge of these systems and their benefits to the urban environments. At the same time, hydrological engineers should have a better understanding of building codes and master plans. The land use regulations are equally as important as the physical site conditions for determining opportunities and constraints for implementing WSUD techniques. There is a need for procedures that can make a better linkage between urban planners and WSUD engineering practices. Thus, this paper aims to present the development of a general framework for incorporating WSUD technologies into the site planning process. The study was applied to lot-scale in the Melbourne region, Australia. Results show the potential space available for fitting WSUD elements, according to building requirements and different types of housing densities. © 2011 WIT Press.

En tolk ska översätta, det är inte som att vara en lärare : Hur upplever skolledare, tolkar, lärare och elever tolkningen i specialskolan?

I denna undersökning intervjuades en skolledare, två tolkar, en lärare och två fokusgrupper med elever om sin syn på tolkning inom specialskolan. Data från de semistrukturerade intervjuerna analyserades enligt en kvalitativ innehållsanalys där liknande svar samlas i temagrupper. Tre teman valdes ut till resultat och dessa är: 1. Information om tolkning 2. Tolken som samordnare 3. Tolkens roll. Information om tolkning handlar om vilken information eleverna får och behöver ha för att tolkningen ska fungera. Tolken som samordnare utgår från Wadensjös (1998) syn på samordning som en reglering av det tolkade samtalet som tolken måste sköta. Tolkens roll undersöktes med främst Metzgers (1999) fundering kring huruvida tolken kan vara neutral. Resultatet pekar på att skolledare och lärare anser att eleverna får mycket information om tolkning, men det tycker inte eleverna själva. Tolkarna anser att mer information behövs för en förståelse för tolkprocessen. Tolkens roll, som neutral och samordnande, är tydlig för tolkar och elever, men inte när det är en lärare som tolkar. Tolkning inom specialskolan är något naturligt som sker ofta och som upplevs fungera till största delen väl när det är tolkar som utför uppdragen.

Poetyckie dialogi Czesława Miłosza i Tadeusza Różewicza

Wydział Filologii Polskiej i Klasycznej

Map of the village of Jamaica, Queens County, N.Y. : showing every lot and building.

Cadastral map showing lot lines, property-owners' names, and planned streets.

Abundância de ramos reprodutivos e produção de sementes em populações de Ipomoea pes-caprae (L.) R. Br. na Ilha de Santa Catarina, Brasil

The variation in the proportion of reproductive branches, fruit, and seed production of Ipomoea pes-caprae (L.) R. Br. (Convolvulaceae) were evaluated at ten beaches on Santa Catarina Island, state of Santa Catarina, Brazil. Three patches per beach of Ipomoea pes-caprae were monitored, involving two reproductive cycles. Ipomoea pes-caprae presented initially an average length of patches of 14 m, with 9.6 branches/m² and 39% of reproductive branches. The proportion of reproductive branches varied between the cycles, but there was not noticed an alternation of reproductive effort between the subsequent cycles. There was a reduction in the percentage of reproductive branches at six localities. In four beaches where Ipomoea pes-caprae populations declined, occurred reduction in the reproductive vigor, and in the seed production, being these declines associated to strong sea erosion. In another hand, in one beach with population increase, there were little reproductive branches due to the occurrence of young stolons. Four patches never maturated fruits, being three of these located at small beaches. The fruit and seed productions in the patches showed values up to 40 fruits/m² and up to 140 seeds/m², respectively. Populations with great seed production were localized in areas adjacent to great coastal plains, which may represent potential seed sources for areas with small seed production in the island.