453 research outputs found
Information sharing across multiple humanitarian organizations—a web-based information exchange platform for project reporting
This article analyzes information sharing problems in the humanitarian development sector and proposes the concept of a web-based exchange platform to face some of the technical challenges. The "Development Information Exchange System” is a mediator-wrapper-architecture that uses XML documents to loosely couple autonomous and heterogeneous information systems. Detailed project information of humanitarian organizations that resides on data provider systems can be formatted with XSL stylesheets according to the needs of the users and shared within or between organizations. The system can help to close the control loop by providing qualitative information about humanitarian projects. This makes project management more efficient. The proposed architecture solves an interface problem between the various partners and stakeholders of humanitarian projects. It is a first step towards a service-oriented architecture between humanitarian organizations. The next step could be the definition of cross-organizational business processes. These processes may be defined platform-independently with the Business Process Execution Language for Web Services. A prototype of the exchange platform is presented and evaluated in this articl
Information Exchange Between Humanitarian Organizations: Using the XML Schema IDML
This article explains challenges that arise when humanitarian organizations want to coordinate their development activities by means of distributed information systems. It focuses on information exchange based on the eXtensible Markup Language (XML) and relational databases. This piece discusses how to save hierarchical XML documents in relational databases. It introduces conversion rules to derive a relational database model from XML schemas. The rules are applied for the design of a database for the management of humanitarian development projects. The underlying schema for the database is the International Development Markup Language (IDML). This exchange standard for development-related activities is described. The article gives details on how a traditional relational database can import or export XML documents, i.e. how it can be XML-enabled
The New College of the Arts: Forming a Collaborative Community at the College of the Arts at Georgia State University in Atlanta, GA
The Ernest G. Welch School of Art & Design, the School of Music, and the School of Film, Media & Theatre form the College of the Arts at Georgia State University. These schools operate in separate campus areas. This lack of unified presence impedes collaborative and inspiring exchanges between communities. The New College of the Arts investigates forming a community that combines all the College of the Arts disciplines and highlights the College’s impact on the city of Atlanta, Georgia State University, and the arts. The components needed for a successful evolution are discovered through primary and secondary research, including stakeholder interviews, site visits, case studies, and a literature review. Considering all these components, I propose a solution as an ideal foundation for the College’s future
Virtual Reality and Creativity: Lessons Learned from a Luminaire Design Project
Current research in design education showed that experiencing virtual reality (VR) in learning led to higher creativity in students. However, some studies showed only a partial impact of VR on student creativity. Using video data analysis (VDA), the authors examined a half-an-hour excerpt of the recorded VR learning experience from a previous study on interior design students (n=13). The authors sought an explanation for the partial impacts of VR on students’ creativity via observing and interpreting one participant’s (a) interaction with VR and (b) the context of the virtual environment. VDA analysis results indicated that the implemented VR technology was intuitive for a fundamental learner yet required time and practice to gain advanced skills. Exploration time was also necessary for students to fully demonstrate the novel, resolution, and style aspects of creativity in their works. The implication is that the partial impact of VR on creativity found in the previous study might be due to the constraints of time and expertise of students (i.e., learn and explore), not VR technology per se. Educators and institutions wishing to include VR in their curricula should allow students ample time and access to VR applications and headsets to practice and sharpen their expertise
Dataset to assess the shadow effect of an outdoor microalgae culture
[EN] This data in brief (DIB) article is related to a Research article [1]. Microalgae biomass absorb the light photons that are supplied to the culture, reducing the light availability in the inner parts of the photobioreactors. This is known as self-shading or shadow effect. This effect has been widely studied in lab conditions, but information about self-shading in outdoor photobioreactors is scarce. How this shadow effect affects the light availability in an outdoor photobioreactor was evaluated. In addition, advantages and disadvantages of different artificial light sources which can overcome light limitation are described.This research work was supported by the Spanish Ministry of Economy and Competitiveness (MINECO, Projects CTM2014-54980-C2-1-R and CTM2014-54980-C2-2-R) jointly with the European Regional Development Fund (ERDF), both of which are gratefully acknowledged. It was also supported by the Spanish Ministry of Education, Culture and Sport via a pre doctoral FPU fellowship to author J. Gonzalez-Camejo (FPU14/05082).Gonzalez-Camejo, J.; Viruela, A.; Ruano, MV.; Barat, R.; Seco, A.; Ferrer, J. (2019). Dataset to assess the shadow effect of an outdoor microalgae culture. Data in Brief. 25:1-4. https://doi.org/10.1016/j.dib.2019.104143S142
Eco-efficiency
none4openMassari, Stefania; Miglietta, Pier Paolo; De Leo, Federica; Ruberti, MarcelloMassari, Stefania; Miglietta, Pier Paolo; De Leo, Federica; Ruberti, Marcell
Sorption of hydrophobic organic compounds on natural sorbents and organoclays from aqueous and non-aqueous solutions: a mini-review
Renewed focus on the sorption of hydrophobic organic chemicals (HOCs) onto mineral surfaces and soil components is required due to the increased and wider range of organic pollutants being released into the environment. This mini-review examines the possibility of the contribution and mechanism of HOC sorption onto clay mineral sorbents such as kaolinite, and soil organic matter and the possible role of both in the prevention of environmental contamination by HOCs. Literature data indicates that certain siloxane surfaces can be hydrophobic. Therefore soils can retain HOCs even at low soil organic levels and the extent will depend on the structure of the pollutant and the type and concentration of clay minerals in the sorbent. Clay minerals are wettable by nonpolar solvents and so sorption of HOCs onto them from aqueous and non-aqueous solutions is possible. This is important for two reasons: firstly, the movement and remediation of soil environments will be a function of the concentration and type of clay minerals in the soil. Secondly, low-cost sorbents such as kaolinite and expandable clays can be added to soils or contaminated environments as temporary retention barriers for HOCs. Inorganic cations sorbed onto the kaolinite have a strong influence on the rate and extent of sorption of hydrophobic organic pollutants onto kaolinite. Structural sorbate classes that can be retained by the kaolinite matrix are limited by hydrogen bonding between hydroxyl groups of the octahedral alumosilicate sheet and the tetrahedral sheet with silicon. Soil organic carbon plays a key role in the sorption of HOCs onto soils, but the extent will be strongly affected by the structure of the organic soil matter and the presence of soot. Structural characterisation of soil organic matter in a particular soil should be conducted during a particular contamination event. Contamination by mining extractants and antibiotics will require renewed focus on the use of the QSAR approaches in the context of the sorption of HOCs onto clay minerals from aqueous and non-aqueous solutions
Tolerance of allogromiid Foraminifera to severely elevated carbon dioxide concentrations : implications to future ecosystem functioning and paleoceanographic interpretations
Author Posting. © Elsevier B.V., 2009. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Global and Planetary Change 65 (2009): 107-114, doi:10.1016/j.gloplacha.2008.10.013.Increases in the partial pressure of carbon dioxide (pCO2) in the atmosphere will
significantly affect a wide variety of terrestrial fauna and flora. Because of tight atmospheric-oceanic
coupling, shallow-water marine species are also expected to be affected by increases in
atmospheric carbon dioxide concentrations. One proposed way to slow increases in atmospheric
pCO2 is to sequester CO2 in the deep sea. Thus, over the next few centuries marine species will
be exposed to changing seawater chemistry caused by ocean-atmospheric exchange and/or deep-ocean
sequestration. This initial case study on one allogromiid foraminiferal species
(Allogromia laticollaris) was conducted to begin to ascertain the effect of elevated pCO2 on
benthic Foraminifera, which are a major meiofaunal constituent of shallow- and deep-water
marine communities. Cultures of this thecate foraminiferan protist were used for 10-14-day
experiments. Experimental treatments were executed in an incubator that controlled CO2 (15
000; 30 000; 60 000; 90 000; 200 000 ppm), temperature and humidity; atmospheric controls
(i.e., ~375 ppm CO2) were executed simultaneously. Although the experimental elevated pCO2
values are far above foreseeable surface water pCO2, they were selected to represent the
spectrum of conditions expected for the benthos if deep-sea CO2 sequestration becomes a reality.
Survival was assessed in two independent ways: pseudopodial presence/absence and
measurement of adenosine triphosphate (ATP), which is an indicator of cellular energy.
Substantial proportions of A. laticollaris populations survived 200 000 ppm CO2 although the
mean of the median [ATP] of survivors was statistically lower for this treatment than for that of
atmospheric control specimens. After individuals that had been incubated in 200 000 ppm CO2
for 12 days were transferred to atmospheric conditions for ~24 hours, the [ATP] of live
specimens (survivors) approximated those of the comparable atmospheric control treatment.
Incubation in 200 000 ppm CO2 also resulted in reproduction by some individuals. Results
suggest that certain Foraminifera are able to tolerate deep-sea CO2 sequestration and perhaps
thrive as a result of elevated pCO2 that is predicted for the next few centuries, in a high-pCO2
world. Thus, allogromiid foraminiferal “blooms” may result from climate change. Furthermore,
because allogromiids consume a variety of prey, it is likely that they will be major players in
ecosystem dynamics of future coastal sedimentary environments.This work was funded by US Department of Energy grant # DE-FG02-03ER63696 (to
J. Kennett and J. Bernhard), NSF OCE-0725966, and the WHOI Summer Student Fellow
Program, which is funded by NSF Research Experience for Undergraduates Program grant
#OCE-0139423
Review of the cultivation program within the National Alliance for Advanced Biofuels and Bioproducts
The cultivation efforts within the National Alliance for Advanced Biofuels and Bioproducts (NAABB)were developed to provide four major goals for the consortium, which included biomass production for downstream experimentation, development of new assessment tools for cultivation, development of new cultivation reactor technologies, and development of methods for robust cultivation. The NAABB consortium test beds produced over 1500 kg of biomass for downstream processing. The biomass production included a number of model production strains, but also took into production some of the more promising strains found through the prospecting efforts of the consortium. Cultivation efforts at large scale are intensive and costly, therefore the consortium developed tools and models to assess the productivity of strains under various environmental conditions, at lab scale, and validated these against scaled outdoor production systems. Two new pond-based bioreactor designs were tested for their ability to minimize energy consumption while maintaining, and even exceeding, the productivity of algae cultivation compared to traditional systems. Also, molecular markers were developed for quality control and to facilitate detection of bacterial communities associated with cultivated algal species, including the Chlorella spp. pathogen, Vampirovibrio chlorellavorus,which was identified in at least two test site locations in Arizona and New Mexico. Finally, the consortium worked on understanding methods to utilize compromised municipal waste water streams for cultivation. This review provides an overview of the cultivation methods and tools developed by the NAABB consortium to produce algae biomass, in robust low energy systems, for biofuel production
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