Abstract--In this paper, we contend that there are significant advantages in treating some classes of sensor networks as biological-like systems-both in structural design characteristics and in operational processes. We show how this design process leads to a sensor network system that is robust to topological changes, is scaleable and self-organising-and has a number of other desirable features. The operating system kOS was designed to support the operation of distributed biologically-inspired algorithms, in order to accomplish tasks in a sensor network system. We look at t h e design of kOS and anaiyse its performance. The work presented has been implemented in an environmental monitoring project, and has applications in other areas.
No abstract
The identity of the cells that form the periosteum during development is controversial with current dogma suggesting these are derived from a Sox9-positive progenitor. Herein, we characterize a newly created Prrx1eGFP reporter transgenic mouse line during limb formation and postnatally. Interestingly, in the embryo Prrx1eGFP-labeled cells become restricted around the Sox9-positive cartilage anlage without themselves becoming Sox9-positive. In the adult, the Prrx1eGFP transgene live labels a subpopulation of cells within the periosteum that are enriched at specific sites, and this population is diminished in aged mice. The green fluorescent protein (GFP)-labeled subpopulation can be isolated using fluorescence-activated cell sorting (FACS) and represents approximately 8% of all isolated periosteal cells. The GFP-labeled subpopulation is significantly more osteogenic than unlabeled, GFP-negative periosteal cells. In addition, the osteogenic and chondrogenic capacity of periosteal cells in vitro can be extended with the addition of fibroblast growth factor (FGF) to the expansion media. We provide evidence to suggest that osteoblasts contributing to cortical bone formation in the embryo originate from Prrx1eGFP-positive cells within the perichondrium, which possibly piggyback on invading vascular cells and secrete new bone matrix. In summary, the Prrx1eGFP mouse is a powerful tool to visualize and isolate periosteal cells and to quantify their properties in the embryo and adult.
In this forum we celebrate research that helps to successfully bring the benefits of computing technologies to children, older adults, people with disabilities, and other populations that are often ignored in the design of mass-marketed products. --- Juan Pablo Hourcade, Editor
The emerging Internet of Things (IoT), through which billions of everyday objects are becoming embedded with the abilities to sense their environment, compute data, and wirelessly connect to other devices, has been widely recognized as the new disruptive technology of our time. The predicted ubiquity of connected devices indicates that IoT technologies are quickly becoming an important part of the digital fluency curriculum, however, no research yet exists on suitable pedagogical approaches for teaching children about the IoT. The current research explores the design and deployment of a pedagogical approach and associated tangible toolkit, ConnectUs, that will enable 10-13 year old children to explore and design for the Internet of Things.
The emerging Internet of Things (IoT), through which vast amounts of everyday objects are becoming embedded with computing and networking capabilities, is rapidly changing the way society uses and experiences technology. Despite this, children do not systematically learn about IoT in schools. This demonstration will showcase ConnectUs, a new IoT toolkit, which can be used to introduce children to a variety of IoT concepts, and provide users with the opportunity to design their own IoT system.
Teaching programming is fast becoming a fundamental learning practice in schools for Science, Technology, Engineering and Maths (STEM) subjects. Through interactive learning with tangible devices such as Lego Mindstorms, students and teachers can explore ways to collect data, analyse and illustrate core principles in STEM subjects. The majority of such educational programmable devices require the use of a PC to program them. This short paper reports on a development project that demonstrates a STEM situated and wireless method to enable students to learn programming. It allows students and teachers to create STEM experiments though only a Windows phone with TouchDevelop and a programmable device solution. This focuses their Constructionist learning applied to STEM learning when situated with programming capabilities via a Bluetooth based library to operate the UCL Engduino, a customised teaching apparatus based on the Arduino platform. We demonstrate a process for integrating teaching devices with TouchDevelop to expand on pedagogical techniques for both student programmers and educators in programming.
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