Extending the scope of models for large-scale structure formation in the Universe

We propose a phenomenological generalization of the models of large-scale structure formation in the Universe by gravitational instability in two ways: we include pressure forces to model multi-streaming, and noise to model fluctuations due to neglected short-scale physical processes. We show that pressure gives rise to a viscous-like force of the same character as that one introduced in the ``adhesion model'', while noise leads to a roughening of the density field yielding a scaling behavior of its correlations.Comment: matches published version in A&A, incl. 3 figure

Effects of decoupling on land use: an EU wide, regionally differentiated analysis

This paper presents a quantitative analysis of the impacts of the „Luxembourg Compromise†as compared to a continuation of Agenda 2000 to the year 2010. The employed new version of the CAPRI model allows us to represent the different member states’ implementations of the CAP reform and to reflect endogenous world market prices based upon a spatial global trade model. The specific contribution of the analysis is a detailed look at the impacts of national differences in the CAP implementation and regional production structures with respect to changes in land allocation. At EU level, cereal areas decrease by about 5% and oilseeds by about 3%. This is paralleled by increases in the set-aside acreage and extensive fodder production. However, significant differences at the regional level can be observed. They are caused mainly by differences in the shares of durum wheat and fodder maize.decoupling, agricultural sector modelling, Luxembourg Agreement, land allocation, Agricultural and Food Policy, Land Economics/Use,

Characterizing Emissions from Open Burning of Military Food Waste and Packaging from Forward Operating Bases

Emissions were characterized and compared from the open burning of four compositions of Meals, Ready-To-Eat (MRE) and four types of MRE fiberboard packaging in response to inhalation concerns at military forward operating bases. Measurements of particulate matter (PM2.5, PM10) showed that MREs account for 70-90 percent of PM emissions when burned in unison with the current fiberboard container and liner and that PM2.5 constitutes a vast majority of the particulates emitted. Targeted replacement of MRE constituents may be more effective in reducing volatile organic compound (VOC) and polycyclic aromatic hydrocarbon (PAH) emissions than the variation of fiberboard packaging designs, while polychlorinated dibenzo-dioxin and -furan (PCDD/PCDF) emissions are believed to be more closely related to other components of a military waste stream. MRE and fiberboard types each respectively produced equivalent PM, PAH, VOC, and PCDD/PCDF emission factors. This study provides the first representative characterization of open burning emissions associated with military rations separate from comprehensive military waste streams

Definition of the CAPRI Core Modelling System and Interfaces with other Components of SEAMLESS-IF

Environmental Economics and Policy,

Documentation of model components EXPAMOD and CAPRI

Agricultural and Food Policy, Environmental Economics and Policy, Land Economics/Use, Production Economics,

EXPAMOD: A methodological Tool for Linking Farm and Market Models by Means of Econometric Response Functions

Technical change at the farm level or changes in input prices often entail that the firm's supply function changes. These changes can take place in numerous ways. This paper presents a methodology that increases the consistency in supply responses across various sets of agricultural products and farm types with a market model based on a statistical response function approach. Since most farm simulation models are limited to a subset of regions and farm types, the linkage to an aggregated model requires a procedure for expanding these results to non sample regions, so that full regional coverage is achieved. This paper addresses theoretical aspects related to the consistency between micro and market level models. Next it deals with some empirical findings related to the selection of different functional forms for extrapolation. We conclude with a critical reflection on applicability of this method in addressing further needs on up-scaling of other economic as well as non-economic indicators.farm models, market models, extrapolation, Farm Management,

Plant ribosome shunting in vitro

It has been proposed that cauliflower mosaic virus 35S RNA with its 600 nt long leader uses an unusual translation process (the translational shunt). A wheat germ in vitro translation assay was used to improve the study of this mechanism. Deletions, the introduction of stable stem-loop structures, and the inhibitory effect of antisense oligonucleotides on gene expression were used to determine the roles of various parts of the leader. It was found that the 5′- and 3′-ends of the leader are absolutely required for translation whereas the middle part is apparently dispensable. These results confirm the data already reported from transient expression experiments with protoplasts. However, the in vitro data suggest in contrast to protoplast experiments that only two relatively short regions at both ends, ∼100 nt each, are required. The in vitro system provides tools for further studying the shunt model at the molecular level and for examining the involvement of proteins in this mechanism. Shunting was also found to occur with the rice tungro bacilliform virus leader. As wheat is neither a host plant of cauliflower mosaic virus nor rice tungro bacilliform virus, the shunt seems to be host independent, a finding that deviates from earlier studies in protoplast

Sectoral real exchange rates and manufacturing exports: A case study of Latin America

Standard theory considers the real exchange rate (RER) as an export determinant. A common limitation of cross-country evidence is the use of effective (REER) or bilateral (BRER) RER indices, both of which have the same values across sectors. The novel contributions of this paper are to propose a variety of goods trade model, to exploit exchange rate variations across sectors by constructing a unique sectoral bilateral RER index (SBRER) for 12 Latin American countries, 21 sectors and 38 trade partners, and to estimate empirically the effect of SBRER movements on Latin American manufacturing exports during 2001-2018. The obtained results show that the SBRER is a statistically significant determinant of aggregate manufacturing exports, whereas the REER coefficient has an unexpected sign and the BRER appears not to be significant. Moreover, sectoral export elasticities indicate that in Latin America mainly low-technology sectors are affected by SBRER movements. Overall, these findings make evident that it is important to consider sectoral heterogeneity regarding trade partners and production costs when estimating RER export elasticities from a macroeconomic perspective and they provide new evidence on the effect of RER movements on Latin American exports

Radiographic features of liver allograft rejection

The radiographic features of 19 transplanted patients with failure of the liver allograft were evaluated. These features were: poor filling, stretching, attenuation of intrahepatic biliary ducts documented by T-tube cholangiogram, attenuation of branches of the hepatic artery seen on angiogram as well as a decrease of blood flow through the liver seen on angiogram and nuclear medicine dynamic scintigram. These findings were secondary to swelling of the transplanted liver and were not specific for rejection; they may also be present in hepatic infarction or infection