A small satellite preliminary thermal control and heat shield analysis

Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, February 2008.Includes bibliographical references (leaf 23).As part of a student owned small satellite project, a preliminary thermal control and heat shield analysis was developed to verify acceptable performance requirements for the system. For the thermal control section, the analysis was focused on the Bus module of the satellite. It measured the effects of the Sun and Eclipse periods at low earth orbit (LEO), accounted key design and subsystems interaction considerations and indicated some of the structural parameters available for its success. As for the heat shield section, calculations were made to quantify the magnitude of the heat flux going into the payload capsule. The thermal control analysis was implemented to determine if the radiator area and insulation from the aluminum honeycomb structure were sufficient to maintain the electronic components at proper operating temperatures during the mission. Materials such as insulating coating paints and mechanisms such as heaters were researched and considered as additional thermal protection barriers. Thermal subsystems interfaces, i.e. Bus-Return Vehicle Interface, were also analyzed. Models for the incoming heat across the Ablator heat shield were used to determine values for transient and steady-state heating and cooling scenarios. These provided indications of the incoming and outgoing heat transfers into and out of the payload module. With the use of thermal resistance models, values for the heat transfers were obtained. This study interpreted the thermal effects of orbiting Earth at LEO for the Bus module of a small satellite. It also measured the effectiveness of the heat shield on preventing incoming heat transfers into the payload module. From proper approximations, realistic results were obtained for both cases. Though no in depth analysis was performed, actual values obtained for the heating effects provided a valid scope of the overall effects on the system.by Diego A. Melani Barreiro.S.B

A static scheduling approach to enable safety-critical OpenMP applications

Parallel computation is fundamental to satisfy the performance requirements of advanced safety-critical systems. OpenMP is a good candidate to exploit the performance opportunities of parallel platforms. However, safety-critical systems are often based on static allocation strategies, whereas current OpenMP implementations are based on dynamic schedulers. This paper proposes two OpenMP-compliant static allocation approaches: an optimal but costly approach based on an ILP formulation, and a sub-optimal but tractable approach that computes a worst-case makespan bound close to the optimal one.This work is funded by the EU projects P-SOCRATES (FP7-ICT-2013-10) and HERCULES (H2020/ICT/2015/688860), and the Spanish Ministry of Science and Innovation under contract TIN2015-65316-P.Peer ReviewedPostprint (author's final draft

Web Design Information Using Java Php Horoscopes

Horoscopes Java application is a web application that contains information about themeaning of the date of birth by weton day (curiously), the phrase includes themeaning of the secret of life is the natural state at birth, affected by Batara (God) as inthe wayang, physical condition, typically, the bond of friendship , health, jobmatching, livelihood, hobbies and arranged marriages are packed in the form ofinteresting and interactive. This scientific authors describe how to make Web sitedesign using Microsoft's Java Horoscopes FronPage XP and supported by usingHTML, and PHP software. It is expected that applications can help a user who wantsto know the date of birth according to custom java as well as knowing the meaning ofthe date of birth

Application Delivery of Goods and Documents PT Bymatrans Using Visual Basic 6.0

This writing contains about administrative problems in delivery of documents or goods atPT BYMATRANS by using visual basic. The author proposes an application to facilitatethe process of shipping an item or document. With the aim to make it easier to obta ininformation about the status of delivery of goods or documents.In this application can save the document or item of data, address, purpose and durationof delivery

Improving Self Empowerment and Quality of Life of Patients with Type 2 Diabetes Mellitus with DEE Based on Health Promotion Model

Introduction: Diabetes Mellitus (DM) is a chronic disease that requires individual ability of patients to adhere treatment of the disease recommended by doctors. Patient should be able to manage the diabetes to prevent complications by maximizing existing aspects within themselves to determine the best option available. The purpose the study was to analyze the effect of diabetes empowerment education to self empowerment and quality of life of patients with type 2 DM at the Puskesmas Bendo Kediri. Method: This study used quasy experiment design with non randomized control group pretest posttest design. Total sampel was 32 respondents divided into control group and experiment group, sample recruited by purposive sampling. Data were collected using questionnaire with DES (Diabetes Empowerment Scale) and DQoL (Diabetes Quality of Life). Data were then analyzed using Wilcoxon Sign rank test and Mann Whitney with level of significance of 0,05. Result: The results showed that there was a differences in self empowerment and quality of life of patients with type 2 DM after intervention. Mann Whitney analysis result`s showed that there are differences in self empowerment between control and experiment groups (p = 0,029) and there was a difference in the quality of life between control and experiment groups (p = 0,022). It can be referred from it that DEE influences self empowerment and quality of life of type 2 DM patients. Discussion: It can be concluded that diabetes empowerment education increasing selfempowerment and quality of life of patients with DM type 2. Further studies should using more objective parameters such as changes in blood sugar levels, hemoglobin A1C values to evaluate the effect of diabetes empowerment education on self-empowerment and quality of life of patients with DM

Aplikasi Game Mewarnai dengan Macromedia Flash 8

Scientific writing is about the making of Game edutaintment.yang intended forchildren age play group, kindergarten and elementary school children in grade 1,many included images that allows users colored objects in coloredgambar.Game consists of two core components. The first component is thechoice of colors, usually displayed with the color blocks and objects whichbecome targets coloring and added sound notification on every color. Incompleting this writing, the author approached by reading books, articles andbrowse the Internet to get as much information so it can be used to solve theproblem in this writing

Application for Growth and Human Development Advanced Level Student Learning Schools First Using Macromedia Flash 8.0.

Application Program Growth And Human Development Learning School ForAdvanced Level One is a multimedia application that contains some material abouthuman development for children or junior secondary students in accordance withexisting guidelines on the books today that are packed in an attractive form and canbe used as learning materials and can facilitate students to learn more about humangrowth and development