Viewing ISS Data in Real Time via the Internet

EZStream is a computer program that enables authorized users at diverse terrestrial locations to view, in real time, data generated by scientific payloads aboard the International Space Station (ISS). The only computation/communication resource needed for use of EZStream is a computer equipped with standard Web-browser software and a connection to the Internet. EZStream runs in conjunction with the TReK software, described in a prior NASA Tech Briefs article, that coordinates multiple streams of data for the ground communication system of the ISS. EZStream includes server components that interact with TReK within the ISS ground communication system and client components that reside in the users' remote computers. Once an authorized client has logged in, a server component of EZStream pulls the requested data from a TReK application-program interface and sends the data to the client. Future EZStream enhancements will include (1) extensions that enable the server to receive and process arbitrary data streams on its own and (2) a Web-based graphical-user-interface-building subprogram that enables a client who lacks programming expertise to create customized display Web pages

Enhancement of Small-Scale Runoff Harvesting Ponds in East Africa

Ethiopia is one of the sub-Saharan African countries that is suffering from a recurring drought due to erratic rainfall occurrence both in amount and distribution. The livelihood of the largest portion of the people is dependent on rain-fed agriculture. Thus, crop failure is widely encountered by the peasants of the region because of the erratic nature of the rain and recurrent drought. As a result, millions of people depend upon relief assistance every year. It is therefore, necessary to detach the agricultural sector from its dependency on this seasonally fluctuating rainfall occurrence to supplement crop failure and feed the ever-increasing population of the country. This calls for harnessing runoff that occurs during wet seasons using water harvesting facilities and later use it in safeguarding crop failure through supplementary irrigation. Although harnessing runoff is not uncommon in Ethiopia, one of the major problems in this effort is the problem of excessive seepage losses and bank stability. This research work evaluates the methods that reduce seepage losses from ponds using locally available treatment materials. The treatment materials used were compacting the pond, lining the pond with termite mound and soil-straw mixture. These treatment methods resulted in reducing seepage losses and protected slope failure. soil-straw mixed and termite mound lined ponds contained water up to 47 and 43 days, respectively. This contrasts with the untreated (control) pond which contained water only for about 5 days. These methods are low-cost as local materials are used in the treatment and can be used in areas where seepage and bank stabilities are a problem. Moreover, this work is expected to pave the way for further research in the area. Keywords: level-drop, pond, termite mound, treatment methods, water tightness DOI: 10.7176/JNSR/9-16-01 Publication date: August 31st 201