M-grid: Using Ubiquitous Web Technologies to create a Computational Grid

There are many potential users and uses for grid computing. However, the concept of sharing computing resources excites security concerns and, whilst being powerful and flexible, at least for novices, existing systems are complex to install and use. Together these represent a significant barrier to potential users who are interested to see what grid computing can do. This paper describes m-grid, a system for building a computational grid which can accept tasks from any user with access to a web browser and distribute them to almost any machine with access to the internet and manages to do this without the installation of additional software or interfering with existing security arrangements

Micro-optic lens for data storage

A new type of microlens for data storage applications that has improved off-axis performance is described. The lens consists of a micro Fresnel pattern on a curved substrate. The radius of the substrate is equal to the focal length of the lens. If the pattern and substrate are thin, the combination satisfies the Abbe sine condition. Therefore, the lens is free of coma. We analyze a 0.5 numerical aperture, 0.50 mm focal length lens in detail. A 0.16 numerical aperture lens was fabricated holographically, and results are presented

Marketing Iowa cantaloupes

Cantaloupe production is well adapted to the sand land areas. This type of soil, though not well adapted to corn and general farm crops, may be advantageously devoted to cantaloupe growing. Cantaloupe marketing in Iowa presents a number of interesting and complex problems. These include consideration of varietal adaptation, the temperature factor, changes in transporting and selling agencies and competing areas of production. The objective of this bulletin is to show clearly what these problems are and to suggest possible methods of meeting them

On the cross-section of Dark Matter using substructure infall into galaxy clusters

We develop a statistical method to measure the interaction cross-section of Dark Matter, exploiting the continuous minor merger events in which small substructures fall into galaxy clusters. We find that by taking the ratio of the distances between the galaxies and Dark Matter, and galaxies and gas in accreting sub-halos, we form a quantity that can be statistically averaged over a large sample of systems whilst removing any inherent line-of-sight projections. In order to interpret this ratio as a cross-section of Dark Matter we derive an analytical description of sub-halo infall which encompasses; the force of the main cluster potential, the drag on a gas sub-halo, a model for Dark Matter self-interactions and the resulting sub-halo drag, the force on the gas and galaxies due to the Dark Matter sub-halo potential, and finally the buoyancy on the gas and Dark Matter. We create mock observations from cosmological simulations of structure formation and find that collisionless Dark Matter becomes physically separated from X-ray gas by up to 20h^-1 kpc. Adding realistic levels of noise, we are able to predict achievable constraints from observational data. Current archival data should be able to detect a difference in the dynamical behaviour of Dark Matter and standard model particles at 6 sigma, and measure the total interaction cross-section sigma/m with 68% confidence limits of +/- 1cm2g^-1. We note that this method is not restricted by the limited number of major merging events and is easily extended to large samples of clusters from future surveys which could potentially push statistical errors to 0.1cm^2g^-1.Comment: 14 pages, 11 figure

Strategy Development of NoS-based Learning Through Lecturer-Teacher Collaboration in Learning Innovation

This study was aimed to 1) improve qualit y of learning through the implementation of NoS based learning, 2) develop form of collaboration between teacher and lecturer in implementation of NoS based learning, 3) implementation NoS based learning model in Senior High School, 4) improve performance of lecturers-teachers through the implementation of based NoS learning, 5) improve learning outcomes on students. This study is a research based learning in Biology Education. The data of NoS covers teachers behavior, student behavior, learning climate and learning materials. The data was analyzed qualitatively. The results show that the implementation of NoS based learning in Biology Education had been appraised as very good by students (67.2%) and team teaching validated as very good (44.56%). Furthermore, students of SMA N 4 considered good (59.66%) and team teaching appraised as very good (81.9%). The students' outcomes had aslso been improved after implementation of NoS-based learning. It can be concluded that the NoS based learning is promised innovation in biology learning

Gambaran Pengendalian Diabetes Melitus Berdasarkan Parameter Indeks Massa Tubuh dan Tekanan Darah di Poli Rawat Jalan Penyakit dalam RSUD Arifin Achmad Pekanbaru

Diabetes mellitus is a group of metabolic diseases, the characteristic is hyperglycemia that causes by abnormality of insulin secretion, insulin action, or both. The prevalence of diabetes mellitus in Indonesia was increase from previous years. Optimal controlling of DM can reduce the occurrence of metabolic disorder and chronic vascular disease. The aim of this study was to know the description of controlling diabetes mellitus based on parameters of body mass index (BMI) and blood pressure in the outpatients department of internal medicine at RSUD Arifin Achmad Pekanbaru. This research design was a cross sectional descriptive study with 51 respondents. In this study it was found that the level of controlling DM based on the parameter of BMI and blood pressure was 31,4% respondents and 39,2% respondents repeatedly can achieve the target. Meanwhile respondents who reached the target in both parameters showed 19,6% respondents, 11,8% respondents achieve the target on BMI but failed to achieve the target on blood pressure, 41,2% respondents achieve the target blood pressure but failed to achieve the target on BMI, 27,4% respondents failed to achieve the target on both parameters. It can be concluded that level of controlling DM based on parameters of BMI and blood pressure in the outpatients department of internal medicine at RSUD Arifin Achmad Pekanbaru was not reached the target