We investigate the determinants of aggregate commodity returns and establish the following findings. (1) Common predictors of bond and stock returns, such as the short rate and the yield spread, also predict commodity returns. A high yield spread predicts low commodity returns, consistent with commodities being a hedge for market fluctuations. (2) Even controlling for these common predictors, a...

Because writing computer programs is hard, computer programmers are taught to use encapsulation and modularity to hide complexity and reduce the potential for errors. Their programs will have a high-level, hierarchical structure that reflects their choice of internal abstractions. We designed and forged a system, Laika, that detects this structure in memory using Bayesian unsupervised learning....

The management of wineries for industrial red winemaking is limited by the capacity and availability fermentation tanks over harvest season. winemakers aim to optimize wine quality, fermentative maceration length, tank’s productive cycle simultaneously. Maceration in varietal production carried out until a specific sugar content (digging-out point) attained, finishing before alcoholic fermentat...

The topic of this paper is the design and implementation of an interacting Lego digger and dumper truck through the use of Petri nets. The focus of this is primarily on the use of Petri nets in the developing of dependable systems, an area of particular concern in the full-size equivalent of our experiment. The content of this paper will discuss the progression of the Petri net model of these t...

Cancer is the name of a group of diseases that affects a large percentage of the world population. Only in the United States in 2012, it is estimated as 1,638,910 new cases and 577,190 deaths [1]. The goal of this study is to analyze cancer occurrences and their relation with environmental condition. Along with the cancer data, we used the air quality data (air quality of each state) and the ce...

A correspondence antipattern is a set of generic correspondences between two ontologies that represents an incorrect alignment. It is useful to help identify incorrect correspondences between two ontologies, thus improving the Ontology Matching process. The specification of a correspondence antipattern requires the identification and correct understanding of a relevant alignment problem, and it...

Recent archaeological discoveries have revealed that pigment use, beads, engravings, and sophisticated stone and bone tools were already present in southern Africa 75,000 y ago. Many of these artifacts disappeared by 60,000 y ago, suggesting that modern behavior appeared in the past and was subsequently lost before becoming firmly established. Most archaeologists think that San hunter-gatherer ...

process — cutters sometimes use “painting” or its opposite “digging out” to improve weight retention. However, these processes can affect the face-up appearance of a diamond, particularly its contrast pattern. Figure 1 (top) illustrates a round brilliant diamond before this last polishing step, which includes the fashioning of the stars and the halves (also called the upper girdle and lower gir...