Exploratory Study on Estimating the Cost of an Open Source Platform for an Astronomy Center

2019 ◽  
Author(s):  
Manar Abu Talib ◽  
Nafisa Ahmed ◽  
Balsam Alkouz ◽  
Abdullah Abdulkarim
Keyword(s):  
Open Source ◽  
Exploratory Study ◽  
The Cost

scholarly journals Open Source Digitally Replicable Lab-Grade Scales

2020 ◽  
Author(s):  
Benjamin R. Hubbard ◽  
Joshua M. Pearce
Keyword(s):  
Open Source ◽  
Low Cost ◽  
Cost Savings ◽  
Load Cell ◽  
Significant Cost ◽  
Load Cells ◽  
The Cost ◽  
Cell Data ◽  
Precision Balance ◽  
Multiple Load

This study provides designs for a low-cost, easily replicable open source lab-grade digital scale that can be used as a precision balance. The design is such that it can be manufactured for use in most labs throughout the world with open source RepRap-class material extrusion-based 3-D printers for the mechanical components and readily available open source electronics including the Arduino Nano. Several versions of the design were fabricated and tested for precision and accuracy for a range of load cells. The results showed the open source scale was found to be repeatable within 0.1g with multiple load cells, with even better precision (0.01g) depending on load cell range and style. The scale tracks linearly with proprietary lab-grade scales, meeting the performance specified in the load cell data sheets, indicating that it is accurate across the range of the load cell installed. The smallest loadcell tested(100g) offers precision on the order of a commercial digital mass balance. The scale can be produced at significant cost savings compared to scales of comparable range and precision when serial capability is present. The cost savings increase significantly as the range of the scale increases and are particularly well-suited for resource-constrained medical and scientific facilities.

scholarly journals FaceSync: Open source framework for recording facial expressions with head-mounted cameras

F1000Research ◽  
2019 ◽  
Vol 8 ◽  
pp. 702 ◽  
Author(s):  
Jin Hyun Cheong ◽  
Sawyer Brooks ◽  
Luke J. Chang
Keyword(s):  
Facial Expression ◽  
Open Source ◽  
Facial Expressions ◽  
Video Recording ◽  
Machine Learning Algorithms ◽  
Expression Data ◽  
Video Recordings ◽  
Automated Method ◽  
Open Source Framework ◽  
The Cost

Advances in computer vision and machine learning algorithms have enabled researchers to extract facial expression data from face video recordings with greater ease and speed than standard manual coding methods, which has led to a dramatic increase in the pace of facial expression research. However, there are many limitations in recording facial expressions in laboratory settings.  Conventional video recording setups using webcams, tripod-mounted cameras, or pan-tilt-zoom cameras require making compromises between cost, reliability, and flexibility. As an alternative, we propose the use of a mobile head-mounted camera that can be easily constructed from our open-source instructions and blueprints at a fraction of the cost of conventional setups. The head-mounted camera framework is supported by the open source Python toolbox FaceSync, which provides an automated method for synchronizing videos. We provide four proof-of-concept studies demonstrating the benefits of this recording system in reliably measuring and analyzing facial expressions in diverse experimental setups, including group interaction experiments.

Determinants of the Use of Knowledge Sources in the Adoption of Open Source Server Software

2012 ◽  
pp. 287-304
Author(s):  
Kris Ven ◽  
Jan Verelst
Keyword(s):  
Open Source ◽  
Absorptive Capacity ◽  
Exploratory Study ◽  
Knowledge Sources ◽  
External Knowledge ◽  
Capacity Theory ◽  
Knowledge Barriers ◽  
Server Software ◽  
Use Of Knowledge ◽  
Insight Into

Previous research suggests that the adoption of open source server software (OSSS) may be subject to knowledge barriers. In order to overcome these barriers, organizations should engage in a process of organizational learning. This learning process is facilitated by exposure to external knowledge sources. Unfortunately, this leaves open the question of which factors determine which knowledge sources are used by organizations. In this study, the authors have performed an exploratory study on the determinants of the use of knowledge sources in the adoption of OSSS. The conceptual model developed in this study was based on the absorptive capacity theory. Data was gathered from 95 organizations to empirically investigate this model. Results provide a quite consistent view on how external knowledge sources are used by organizations in the adoption of OSSS. Moreover, results provide more insight into the context in which the adoption of OSSS takes place.

An Open Source e-Procurement Application Framework for B2B and G2B

2011 ◽  
pp. 76-97 ◽  
Author(s):  
Georgousopoulos Christos ◽  
Xenia Ziouvelou ◽  
Gregory Yovanof ◽  
Antonis Ramfos
Keyword(s):  
Open Source ◽  
Business Processes ◽  
Service Oriented Architecture ◽  
Cost Effective ◽  
Assessment Process ◽  
Application Framework ◽  
Two Phase ◽  
Model Driven ◽  
Service Oriented ◽  
The Cost

Since the early 1980s, Open Source Software (OSS) has gained a strong interest and an increased acceptance in the software industry that has to date initiated a “paradigm shift” (O’Reilly, 2004). The Open Source paradigm has introduced wholly new means of software development and distribution, creating a significant impact on the evolution of numerous business processes. In this chapter we examine the impact of the open source paradigm in the e-Procurement evolution and identify a trend towards Open Source e-Procurement Application Frameworks (AFs) which enable the development of tailored e-Procurement Solutions. Anchored in this notion, we present an Open-Source e-Procurement AF with a two-phase generation procedure. The innovative aspect of the proposed model relates to the combination of the Model Driven Engineering (MDE) approach with the Service-Oriented Architecture (SOA) paradigm for enabling the cost-effective production of e-Procurement Solutions by facilitating integration, interoperability, easy maintenance, and management of possible changes in the European e-Procurement environment. The assessment process of the proposed AF and its resulting e-Procurement Solutions occurs in the context of G2B in the Western-Balkan European region. Our evaluation yields positive results and further enhancing opportunities for the proposed Open Source e-Procurement AF and its resulting e-Procurement Solutions.

Economy Based Resource Allocation in IaaS Cloud

2013 ◽  
Vol 3 (2) ◽  
pp. 1-11 ◽  
Author(s):  
Hemant Kumar Mehta ◽  
Eshan Gupta
Keyword(s):  
Resource Allocation ◽  
Open Source ◽  
Service Provider ◽  
Lower Cost ◽  
Optimization Techniques ◽  
Considerable Extent ◽  
Experimental Results ◽  
Computing Power ◽  
Power Storage ◽  
The Cost

Infrastructure as a Service (IaaS) offers hardware resources (computing power, storage and network) as a service to its customers. The customers order these resources in the form of a lease. Aim of any service provider is to make a leasing plan to maximize the number of accepted leases. Opennebula is popular open source toolkit for building IaaS cloud. Opennebula has its own lease manager and it can also be integrated with Haizea which is an open source lease manager. An economy based algorithm should focus on incentives of both the consumers and the providers. In this paper, an economy based leasing algorithm is developed and integrated with Haizea. This economy based algorithm takes care of incentives of both the parties i.e. customer and service provider. It uses the concept of optimization techniques to optimize the costs. The incentive for customers is lower cost of execution of its lease on the capable node as compare to existing non-economy based algorithms. If an appropriate resource is not found, then the algorithm uses negotiation on budget and resource demand; that increases the number of accepted lease. Thus, incentive for providers is an increase in profit as the amount of accepted leases increase. Experimental results show that the proposed economy based leasing algorithm reduces the cost of execution of the consumer’s lease and increases the profit of the provider to a considerable extent.

Permission Issues in Open-Source Android Apps: An Exploratory Study

2019 ◽  
Author(s):  
Gian Luca Scoccia ◽  
Anthony Peruma ◽  
Virginia Pujols ◽  
Ivano Malavolta ◽  
Daniel E. Krutz
Keyword(s):  
Open Source ◽  
Exploratory Study ◽  
Android Apps

scholarly journals RHEEMix in the data jungle: a cost-based optimizer for cross-platform systems

2020 ◽  
Vol 29 (6) ◽  
pp. 1287-1310
Author(s):  
Sebastian Kruse ◽  
Zoi Kaoudi ◽  
Bertty Contreras-Rojas ◽  
Sanjay Chawla ◽  
Felix Naumann ◽  
...  
Keyword(s):  
Open Source ◽  
Data Analytics ◽  
Enumeration Algorithm ◽  
Data Movement ◽  
Order Of Magnitude ◽  
Efficient Data ◽  
Cross Platform ◽  
Platform System ◽  
The Cost ◽  
Data Analytic

AbstractData analytics are moving beyond the limits of a single platform. In this paper, we present the cost-based optimizer of Rheem, an open-source cross-platform system that copes with these new requirements. The optimizer allocates the subtasks of data analytic tasks to the most suitable platforms. Our main contributions are: (i) a mechanism based on graph transformations to explore alternative execution strategies; (ii) a novel graph-based approach to determine efficient data movement plans among subtasks and platforms; and (iii) an efficient plan enumeration algorithm, based on a novel enumeration algebra. We extensively evaluate our optimizer under diverse real tasks. We show that our optimizer can perform tasks more than one order of magnitude faster when using multiple platforms than when using a single platform.

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