The reliable use of purified Cry1Ab protein standards is a prerequisite for ecological studies and resistance monitoring programs of Cry1Ab-expressing transgenic corn. In this study the stability and activity of different Cry1Ab protein batches expressed in and purified from Escherichia coli were determined during two-year storage at different temperature conditions (4 degrees C, -20 degrees C,...

For the under-actuated parallel system that 3 robots cooperatively hoist an object of 6 DOF by cables, Newton-Euler method is used to establish the dynamic equation of the system. It is considered that the end effector of each robot has three degrees of freedom in this paper. Therefore, when the position and pose of the object were known, there are 15 unknown parameters and 9 equations by the i...

When searching for a person in an online social network, most contemporary networks return source-target paths, ranked only by degrees of separation. Not only does this fail to reflect social tie strength (how well two people know one another), it also does not model asymmetry in social relationships (i.e. just because one person pays attention to another, it does not mean the latter will recip...

This paper describes an end-to-end system for positioning sensors to observe desired parts of arbitrary initially unknown three-dimensional environments. The system finds the appropriate number of sensors and their configuration using a derivative-free cooperative optimization algorithm relying on a visibility estimation cost function. The system is tested of scenarios with different types of s...

Social networks are amongst the first to be studied. Six degrees of separation is the theory that anyone on earth can be connected to any other person on the planet through a chain of acquaintances that has no more than five intermediaries. The theory was first proposed in 1929 by the Hungarian writer Frigyes Karinthy in a short story called Chains. In 1967, American sociologist Stanley Milgram...

Models, simulators and control strategies are required tools for the conception of secure and comfortable vehicles. The aim of this paper is to present an efficient way to develop models for dynamic vehicle, focusing on a two wheeled vehicles whose body involves six degrees of freedom. The resulting model is sufficiently generic to perform simulation of realistic cornering and accelerating beha...

Provenance information in eScience is metadata that's critical to effectively manage the exponentially increasing volumes of scientific data from industrial-scale experiment protocols. Semantic provenance, based on domain-specific provenance ontologies, lets software applications unambiguously interpret data in the correct context. The semantic provenance framework for eScience data comprises e...

The strength of weak ties is that they tend to be long – they connect socially distant locations. Recent research on “small worlds” shows that remarkably few long ties are needed to give large and highly clustered populations the “degrees of separation” of a random network, in which information can rapidly diffuse. We test whether this effect of long ties generalizes from simple to complex cont...

Trajectory information can be analysed in both the time and space dimensions via a new metric called the M-metric. The M-metric is a measurement definition which quantifies the allocation of control across multiple degrees of freedom. Allocation of control is defined as the product of two components, the simultaneity of control and the efficiency of control, corresponding to the time and space ...

The university has undergone important changes in recent years such as the expansion of a greater heterogeneity in the students’ profile. This reality has led to significant changes in the university access, the achievement and the job prospects of university students. Students come from different socioeconomic backgrounds, different access pathways and are incorporated into the university with...