Proposed Conceptual Guidelines for the Design of a BioBrick Graphical Language & an Example

As we update the current BioBrick symbols we have an opportunity to look at the end users of a BioBrick Graphical language and develop design guidelines so that the new symbols best suit their needs. This document explores those needs, looks at the design principles necessary to meet them, and puts those principles into practice by showing an example of a new set of BioBrick symbols

Identifying Factors Impacting First-year Persistence in Computer Graphics Technology

The retention of students is a goal that all universities strive to achieve. With more and more emphasis placed on degree completion, retaining students becomes even more important. University faculty and staff continually try to identify what possible factors affect a student’s decision to remain in their chosen field of study. Faculty in the Computer Graphics Technology (CGT) program are concerned with what factors, if any, affect the persistence of students in the CGT program. The goal of this study was to determine if personal factors such as gender and being a first-generation student and/or academic factors such as admission status, semester course load, and academic grades are related to the first-year persistence of CGT students. Results indicate that first semester performance is a significant indicator of persistence. Gender, first generation student, and admission status were not found to be significant indicators. This points out the importance of efforts focused on students in their first semester of college

Symmetry-breaking-induced loss of ergodicity in maps of the simplex with inversion symmetry

Motivated by proving the loss of ergodicity in expanding systems of piecewise affine coupled maps with arbitrary number of units, all-to-all coupling and inversion symmetry, we provide ad-hoc substitutes - namely inversion-symmetric maps of the simplex with arbitrary number of vertices - that exhibit several asymmetric absolutely continuous invariant measures when their expanding rate is sufficiently small. In a preliminary study, we consider arbitrary maps of the multi-dimensional torus with permutation symmetries. Using these symmetries, we show that the existence of multiple invariant sets of such maps can be obtained from their analogues in some reduced maps of a smaller phase space. For the coupled maps, this reduction yields inversion-symmetric maps of the simplex. The subsequent analysis of these reduced maps show that their systematic dynamics is intractable because some essential features vary with the number of units; hence the substitutes which nonetheless capture the coupled maps common characteristics. The construction itself is based on a simple mechanism for the generation of asymmetric invariant union of polytopes, whose basic principles should extend to a broad range of maps with permutation and inversion symmetries

Annotation of Scientific Summaries for Information Retrieval.

International audienceWe present a methodology combining surface NLP and Machine Learning techniques for ranking asbtracts and generating summaries based on annotated corpora. The corpora were annotated with meta-semantic tags indicating the category of information a sentence is bearing (objective, findings, newthing, hypothesis, conclusion, future work, related work). The annotated corpus is fed into an automatic summarizer for query-oriented abstract ranking and multi- abstract summarization. To adapt the summarizer to these two tasks, two novel weighting functions were devised in order to take into account the distribution of the tags in the corpus. Results, although still preliminary, are encouraging us to pursue this line of work and find better ways of building IR systems that can take into account semantic annotations in a corpus

From ocean sensors to traceable knowledge by harmonizing ocean observing systems

Society is requesting more than ever being better informed on the state and effects of Earth’s changing oceans. This has direct implications on ocean observing systems, including scientific planning and technology. For instance better knowledge implies that data on health, climate and overall dynamics of our oceans have a known level of quality, be up-to-date, be easily discoverable, be easily searchable both in time and space, and be human- and machine-readable in order to generate faster decisions when and where needed. Requirements with respect to spatial regions and scales (seas and ocean basins, from millimeters to hundreds of kilometers), time scope and scales (past, present, future, from microseconds to decades) indeed have direct implications on observing systems’ spatio-temporal sampling capabilities. Possibly high spatial and temporal resolution also means unprecedented amounts of data, communication bandwidth and processing power needs. Technological implications are thus quite substantial and, in this short article, we will try to provide a review of some initiatives of global and local focus that are aiming to respond to at least some of these needs, starting with the application of the Global Earth Observation System of Systems (GEOSS) guidelines to ocean observatories. Then we will address real scenarios in real ocean observing facilities, first with the European Seas Observatory Network and the European Multidisciplinary Seafloor Observation (ESONET-EMSO), then two recently associated Spanish initiatives, the Oceanic Platform of the Canary Islands (PLOCAN) infrastructure and deep sea observatory in the Canary Islands, and the Expandable Seafloor Observatory (OBSEA) shallow water Western-Mediterranean observatory of the Technical University of Catalonia, one of the first real-time ocean observatories implemented with state-of- the-art interoperable concepts, down to the sensor interface.Postprint (published version

Applying OGC sensor web enablement to ocean observing systems

The complexity of marine installations for ocean observing systems has grown significantly in recent years. In a network consisting of tens, hundreds or thousands of marine instruments, manual configuration and integration becomes very challenging. Simplifying the integration process in existing or newly established observing systems would benefit system operators and is important for the broader application of different sensors. This article presents an approach for the automatic configuration and integration of sensors into an interoperable Sensor Web infrastructure. First, the sensor communication model, based on OGC's SensorML standard, is utilized. It serves as a generic driver mechanism since it enables the declarative and detailed description of a sensor's protocol. Finally, we present a data acquisition architecture based on the OGC PUCK protocol that enables storage and retrieval of the SensorML document from the sensor itself, and automatic integration of sensors into an interoperable Sensor Web infrastructure. Our approach adopts Efficient XML Interchange (EXI) as alternative serialization form of XML or JSON. It solves the bandwidth problem of XML and JSON.Peer ReviewedPostprint (author's final draft

Effect of Random Ethylene Comonomer on Relaxation of Flow-Induced Precursors in Isotactic Polypropylene

The effect of comonomer on structure and relaxation of flow-induced precursors was investigated in a series of isotactic polypropylene and random propylene−ethylene copolymers. The polymers were subjected to flow by fiber pulling and allowed to relax above their nominal melting temperature for specific times. The type of morphology developed after cooling revealed whether flow-induced precursors were still present or the melt had fully reequilibrated. Precursors were long-lived and, at fixed temperature, decayed significantly faster with higher ethylene content. The critical time for precursor relaxation followed an Arrhenius-type dependence with temperature. The apparent energy of activation for precursor dissolution decreased with increasing comonomer content, indicating that the rate-limiting step of the relaxation process becomes less difficult with higher ethylene fraction. This effect is attributed to ethylene co-units acting as disruptors of precursor structure and is discussed in terms of quasi-crystalline nature and characteristic chain stem length of precursor bundles. Includes supplemental materials

Informed Consent and the Role of the Treating Physician

In the century since Justice Benjamin N. Cardozo famously declared that “[e]very human being of adult years and sound mind has a right to determine what shall be done with his own body,” informed consent has become a central feature of American medical practice. In an increasingly team-based and technology-driven system, however, who is — or ought to be — responsible for obtaining a patient’s consent? Must the treating physician personally provide all the necessary disclosures, or can the consent process, like other aspects of modern medicine, take advantage of specialization and division of labor? Analysis of Shinal v. Toms, a recent Pennsylvania Supreme Court case, demonstrates the dangers of a narrow, rigid approach to consent

Data Development and Analysis Pathways for Marine Mammals and Turtles: Creating a User Interface

A major obstacle in genetic research is developing streamlined methods for analyzing large amounts of data. The statistical computer programming language R provides users with the ability to develop packages containing specific functions in order to create more accessible data analysis pipelines. However, writing code in R can still be intimidating to those with little to no coding experience. Fortunately, the R package shiny provides a framework for developing web applications based on R functions. Using shiny, we developed a user-friendly web application containing functions of the R package strataG. The strataG package contains several functions for summarizing genetic data and analyzing population structure. Researchers who do not know how to use R or may not feel comfortable with using strataG on the R command line can now use a browser-based graphical user interface to load their raw data, select and run analyses, and save the outputs generated. User-friendly data analysis tools such as ours will assist researchers as the field of biology continues to increasingly demand that scientists have advanced computing skills. The user interface of this web application is presented here for “Data Development and Analysis Pathways for Marine Mammals and Turtles.” The server will be presented by Warren Asfazadour, et al. separately in the same series