TALplanner in IPC-2002: Extensions and Control Rules

TALplanner is a forward-chaining planner that relies on domain knowledge in the shape of temporal logic formulas in order to prune irrelevant parts of the search space. TALplanner recently participated in the third International Planning Competition, which had a clear emphasis on increasing the complexity of the problem domains being used as benchmark tests and the expressivity required to represent these domains in a planning system. Like many other planners, TALplanner had support for some but not all aspects of this increase in expressivity, and a number of changes to the planner were required. After a short introduction to TALplanner, this article describes some of the changes that were made before and during the competition. We also describe the process of introducing suitable domain knowledge for several of the competition domains

Classical quasi-trigonometric r−r-matrices of Cremmer-Gervais type and their quantization

We propose a method of quantization of certain Lie bialgebra structures on the polynomial Lie algebras related to quasi-trigonometric solutions of the classical Yang-Baxter equation. The method is based on so-called affinization of certain seaweed algebras and their quantum analogues.Comment: 9 pages, LaTe

WHO ARE RESOURCE NONUSERS AND WHAT CAN THEY TELL US ABOUT NONUSE VALUES? AN APPLICATION TO COASTAL WETLAND RESTORATION

This paper assesses the potential for incomplete definitions of resource use to influence estimates of nonuser WTP, and whether uses underlying certain use values may escape measurement using standard mechanisms applied to distinguish resource users from nonusers. Empirical results are drawn from a stated preference analysis involving coastal wetland restoration.Resource /Energy Economics and Policy,

TRANSFJO. Hydrophysical observations in the Frierfjord, the Drammensfjord and the Iddefjord July-December 1997. Data report

The strategic institute programme, TRANSFJO, relies heavily on a fjord model developed at NIVA. To validate and further develop the physical part of the model, extensive measurements of the basic hydrophysical and meteorological parameters in the Frierfjord, the Drammensfjord and the Iddefjord were carried out in July-December 1997. This opportunity was also used to check out instruments and methods to be used in later stages of the program. In technical terms the field studies were a success. With few exceptions the instruments functioned properly, and the malfunctions should be eliminated through better pre-use checking and better deployment procedures. The general impression is that the field studies have produced the kind of data sets which are needed for further development of the model. Furthermore, the data seem to contain new knowledge of hydrophysical processes in fjords in southern Norway. This element will be looked into in 1999

ADDITIVE MANUFACTURING HOLLOW METAL PARTS WITH LIQUID METAL

Liquid-metal additive manufacturing is a new technology whose limits have not been fully tested. Unique molten-metal droplet printing allows for new metal structures to be made that cannot be built with traditional (powder)-based metal additive manufacturing. This research focuses on the potential to build hollow metal parts with no secondary manufacturing. The research provides a brief background in additive manufacturing and the reason for choosing liquid-metal jet printing. Multiple experiments are performed to test the design limitations of the additive manufacturing printer chosen. This leads to the design of the hollow metal part configurations that are ultimately buckling tested to prove they can support substantial sea pressure. As for the applicability of this research, it focuses on the buoyancy potential of the hollow parts and the potential use they could be to the undersea warfare community.Lieutenant, United States NavyApproved for public release. Distribution is unlimited

Herding cats: observing live coding in the wild

After a momentous decade of live coding activities, this paper seeks to explore the practice with the aim of situating it in the history of contemporary arts and music. The article introduces several key points of investigation in live coding research and discusses some examples of how live coding practitioners engage with these points in their system design and performances. In the light of the extremely diverse manifestations of live coding activities, the problem of defining the practice is discussed, and the question raised whether live coding will actually be necessary as an independent category

Enkel resipientundersøkelse i Oslofjorden ved Alnas munning for å belyse eventuelle skader forårsaket av utslipp av akrylamid fra Romeriksporten

Det ble ikke påvist akrylamid i vann og sedimenter i Alnaelvas munning eller sjøområdet utenfor. I selve munningen var bunnen død. Også Oslofjorden utenfor var kraftig forurensningspåvirket, men med en viss bedring i faunatilstanden med økende avstand fra Alnas munning. Dette kan tyde på at de samlede forurensninger fra Alna spiller en meget betydelig rolle for den dårlige tilstanden. Uavhengig av akrylamidutslippene var det imidlertid forventet å finne en meget dårlig faunatilstand i dette fra før av sterkt forurensede området. Om akrylamidutslippene har bidratt til å ytterligere utarme den allerede svært forurensningspregede faunaen innerst i indre Oslofjorden, er ikke mulig å fastslå ved hjelp av den enkle undersøkelsen som her er foretatt. Den observerte tilstand var omtrent som forventet, tatt i betraktning den fra før av sterke forurensningen i området og tidligere beskrivelser av faunatilstanden. Det var ingen ting som spesifikt tydet på at akrylamidforurensning hadde bidratt til en ytterligere forverring