Phylogenetic networks are becoming increasingly popular in phylogenetics since they have the ability to describe a wider range of evolutionary events than their tree counterparts. In this paper, we study Markov models on phylogenetic networks and their associated geometry. We restrict our attention to large-cycle networks, networks with a single undirected cycle of length at least four. Using t...

The cycle basis of a graph arises in a wide range of engineering problems and has a variety of applications. Minimal and optimal cycle bases reduce the time and memory required for most of such applications. One of the important applications of cycle basis in civil engineering is its use in the force method to frame analysis to generate sparse flexibility matrices, which is needed for optimal a...

Gaynarje spring is one of the hottest springs in the world and is located around Meshginshahr in northwestern Iran. Because of the water with a temperature of 82 ºC, it is not appropriate to use this mineral water for swimming and bathing. In this study, in addition to lowering the water temperature to the appropriate swimming temperature (29 ºC), the hot water is used for power and natural gas...

This study presents a theoretical analysis of a new combined cooling, heating, and power cycle by the novel integration of an organic Rankine cycle (ORC), an ejector refrigeration cycle (ERC), and a heat pump cycle (HPC) for producing cooling output, heating output, and power output simultaneously. Three different working fluids—namely R113, isobutane, and R141b—have been used in power, ref...

The works carried out during the first year of my DPhil project are presented in this report. The objective of this project is to make use of a unique and advanced data assimilation system that enables the combining of observational data with predictions from a global numerical model of the Martian atmospheric circulation. In this report, an introduction to the planet Mars and a brief descripti...

background: hoxa11 and leukemia inhibitory factor (lif) and basic transcriptional element binding protein1 (bteb1) are expressed in endometrium throughout the menstrual cycle and show a dramatic increase during the mid-luteal phase at the time of implantation. in this case-control study, the expression pattern of these mrna was evaluated in patients with endometriosis at the time of implantatio...

this paper is to develop a knowledge management (km) model in some iranian academic research centers (arc) based on km critical success factors. general km critical success factors (csf) were identified through literature review. then the research procedure led to the identification of km critical success factors in iranian arcs including 16 different factors. it was done through first stage su...

Recently there has been interest in DWDM-based optical networks that are assumed to employ exactly two working fibers uniformly on every span (or “link”). At the fiber level such networks are referred to as homogeneous networks. An interesting and highly efficient strategy for protection of such networks is to use a single dark-fiber pcycle formed on a Hamiltonian cycle (if it exists). We show ...

With the widespread use of time-lapse data to understand cellular function, there is a need for tools which facilitate high-throughput analysis of data. Fluorescence microscopy of genetically engineered cell lines in culture can be used to visualise the progression of these cells through the cell cycle, including distinctly identifiable sequential stages of cell division (mitotic phases). We pr...