In this paper, we prove that every 3-chromatic connected graph, except C7, admits a 3-vertex coloring in which every vertex is the beginning of a 3-chromatic path. It is a special case of a conjecture due to S. Akbari, F. Khaghanpoor, and S. Moazzeni, cited in [P.J. Cameron, Research problems from the BCC22, Discrete Math. 311 (2011), 1074–1083], stating that every connected graph G other than ...

The urgent needs for online health information resulted in the establishment of many community-based health services such as HealthTap1 and HaoDF2. They offer knowledge in the form of question answer (QA) pairs, where questions are issued by grassroot healthseekers, and answers are provided by doctors. These services have some intrinsic properties. First, they are crowdsourcing data that are co...

The rank of a graph is defined to be the rank of its adjacency matrix. A graph is called reduced if it has no isolated vertices and no two vertices with the same set of neighbors. Akbari, Cameron, and Khosrovshahi conjectured that the number of vertices of every reduced graph of rank r is at most m(r) = 2 − 2 if r is even and m(r) = 5 · 2(r−3)/2 − 2 if r is odd. In this article, we prove that i...

Nowadays, with the emerging of the new applications like robot control in image processing, artificial vision for visual servoing is a rapidly growing discipline and Human-machine interaction plays a significant role for controlling the robot. This paper presents a new algorithm based on spatio-temporal volumes for visual servoing aims to control robots. In this algorithm, after applying necess...

uniform linear array (ula)-based tapped-delay line (tdl) structure has good performance metrics when the signal sources are located at the middle angles. it offers poor performance when the signal sources are close to the array endfire. in this paper, a new approach is proposed which offers higher performance and desired beamforming on tdl structure when the wideband uncorrelated radio sources ...

Czerwi’nski et al. introduced Lucky labeling in 2009 and Akbari al A.Nellai Murugan studied it further. defined Number of graph as follows: A vertices a G is called if for every pair adjacent u v where . may admit any number lucky labelings. The least integer k which has from the set 1, 2, denoted by η(G). This paper aims to determine Complete Kn, bipartite Km,n tripartite Kl,m,n. It also been ...

Population density of Aspergillus section Flavi in pistachio kernels of Iranian cultivars was studied in main pistachio growing areas of Iran during 2015 to 2017. In order to investigate the rate of contamination of pistachio cultivars to Aspergillus section Flavi and aflatoxins, 13 pistachio cultivars, including Akbari, Kaleh-ghouchi, Ovhadi, Ahmad-aghaee, M...

BACKGROUND AND OBJECTIVE: The efficacy of Saccharomyces boulardii for treatment of childhood diarrhea remains unclear. Our objective was to systematically review data on the effect of S. boulardii on acute childhood diarrhea. METHODS: Our data sources included Medline, Embase, CINAHL, Scopus, and The Cochrane Library up to September 2013 without language restrictions. Randomized controlled tria...