In examining genetic data in recent publications, Backeljau et al. showed cases in which two or more different trees (tie trees) were constructed from a single data set for the neighbor-joining (NJ) method and the unweighted pair group method with arithmetic mean (UPGMA). However, it is still unclear how often and under what conditions tie trees are generated. Therefore, I examined these proble...

HIV rapid diagnostic tests have enabled widespread implementation of HIV programs in resource-limited settings. If the tests used in the diagnostic algorithm are susceptible to the same cause for false positivity, a false-positive diagnosis may result in devastating consequences. In resource-limited settings, the lack of routine confirmatory testing, compounded by incorrect interpretation of we...

The emergence of User Generated Content (UGC) and social media, enables common users to have great influence on other users adoption and decision making behavior. In current research, perceived information usefulness is always taken as the only antecedent of UGC adoption, which is not enough to explain the underlying mechanism, especially in new social media context. This study proposes a new t...

It is a well-established result that the marginal probability of a social tie between two persons declines with geographical distance for a wide range of social relations (see, e.g., Bossard, 1932; Zipf, 1949; Festinger et al., 1950; Hägerstrand, 1967; Freeman et al., 1988; Latané et al., 1995; McPherson et al., 2001). While often regarded as a mere curiosity, others have argued that this relat...

One potential application for biomolecular computation methods is the evolution of novel proteins[1]. However there remain a number of key problems, one being how to tie the evaluation of the phenotype (protein) to the fitness of the genotype (DNA). Artificial liposomes may provide a solution, by isolating DNA and derived proteins in cell-like partitions, so that the DNA may be associated with ...

Just as terrestrial networks have shifted to routed, message centric networks, the satellite networking regime is beginning to transition in the same manner. An analysis of current networking protocols is conducted and determines that the unique mixture of static and dynamic links present in orbital constellations makes them equally unsuited for static network protocols and MANET protocols. The...

In the past, most researchers focused on the efficacy of tie-strength in various applications for both online and offline social networks. However, how tie-strength can help in the analysis of online social networks was a commonly neglected issue. The massive size and recording properties of online social networks offer the possibility to measure tie-strength objectively. In this study, we exam...

Bow-tie antenna is one of wideband antennas [1]. It has been reported that the bow-tie antenna has been miniaturized by adding folded elements [2]. In this paper, it is shown that bending the bow-tie antenna with folded elements is effective method for miniaturization. The bent bow-tie antenna with folded elements can be more miniaturized than conventional bow-tie antenna with folded elements, ...

In this study, the factors influencing nucleation of magnetic vortices in CeFeB ribbons were studied using Lorentz transmission electron microscopy. Magnetic and cross-tie walls exist Ce14Fe80B6 amorphous ribbons. Via proper annealing, ribbon is crystallized into a nanocrystalline structure whereby vortex can grains with sizes approximately 30∼150 nm, indicating formation closely related to sha...