In the present study, a trophic structure model for some fish species of the northern Oman Sea is developed through using mass balance modeling software, Ecopath with Ecosim (EwE). In this model, we simulated 16 functional groups spread across an area of 3998.20 km2 from 2017 to 2018. Mean trophic level in the area of the present study was 3.49. Values calculated for system omnivory and connect...

Bigraphs are graphs whose nodes may be nested, representing locality, independently of the edges connecting them. They may be equipped with reaction rules, forming a bigraphical reactive system (Brs) in which bigraphs can reconfigure themselves. Following an earlier paper describing link graphs, a constituent of bigraphs, this paper is a devoted to pure bigraphs, which in turn underlie various ...

Ecohydrology is the science that studies the mutual interaction between the hydrological cycle and ecosystems. Such an interaction is especially intense in water-controlled ecosystems, where water may be a limiting factor, not only because of its scarcity, but also because of its intermittent and unpredictable appearance. Hydrologic dynamics is shown to be a crucial factor for ecological patter...

The dynamics of a spatio-temporal scene is described by diierential and integral geometric invariants of the image structure of that scene at various resolutions. This image structure is represented by continuous, semi-discrete or discrete similarity jet-spaces of spatio-temporally bounded input images. These jet-spaces are found by extending classical scale space theory for spatio-temporally b...

During the last ten years several studies have appeared regarding language complexity. Research on this issue began soon after the burst of a new movement of interest and research in the study of complex networks, i.e., networks whose structure is irregular, complex and dynamically evolving in time. In the first years, network approach to language mostly focused on a very abstract and general o...

We propose a measure of total population diversity D of an evolving population of genetically specied individuals. Total diversity D is the sum of two components, within-gene diversityWg and betweengene diversity Bg . We observe the dynamics of diversity in the context of a particular model, a twodimensional world with organisms competing for resources and evolving by natural selection acting i...

The temporal and spectral properties of fluorescence decay in isolated photosystem I (PS I) preparations from algae and higher plants were measured using time-correlated single photon counting. Excitations in the PS I core antenna decay with lifetimes of 15-40 ps and 5-6 ns. The fast decay results from efficient photochemical quenching by P700, whereas the slow decay is attributed to core anten...

J.A. BERGSTRA and J.W. KLOP Centre for Mathematics and Computer Science, P. O. Box 4079, 1009 AB Amsterdam, The Netherlands Communicated by E. Engeler Received February 1984 Revised October 1984 Abstract. We present an axiom system ACP, for communicating processes with silent actions ('z-steps'). The system is an extension o f ACP, Algebra of Communicating Processes, with Milner's z-laws and an...

Low power, radarlike electromagnetic (EM) wave sensors, operating in a homodyne interferometric mode, are being used to measure tissue motions in the human vocal tract during speech. However, when these and similar sensors are used in front of the laryngeal region during voiced speech, there remains an uncertainty regarding the contributions to the sensor signal from vocal fold movements versus...

The common approach in empirical capital structure research has been to study the determinants of optimal leverage by studying the association between observed leverage and a set of explanatory variables. This approach has two major shortcomings. First, the observed leverage need not necessarily be the optimal leverage. Second, the empirical analyses, being effectively non-dynamic, are unable t...