324,681 research outputs found
Difluorobora-s-diazaindacene dyes as highly selective dosimetric reagents for fluoride anions
No full textDifltiorobora-s-diazaindacene derivatives are shown to report fluoride ions selectively in acetone solutions; both absorption and emission characteristics are drastically altered, and as a result, (his hitherto unknown reaction transforms the BODIPY(R) class of dyes into highly selective chromogenic and dual channel fluorogenic reagents for fluoride
Web science: a curriculum overview
No full textWeb Science is an emerging subject which is fundamentally inter-disciplinary. Web Science can be described as a ‘socio-technical’ subject, which reflects the current nature and evolution of the Web, and its impact upon society. The development of the Web, and consequently Web Science, is influenced by many aspects of life, from economics and politics, to law, health and social movements. The term Web Science was first coined in 2006. Subsequently, a growing number of institutions across the world began offering Web Science taught programmes. The majority of Web Science study takes place at Masters or PhD level; however a number of intuitions are now also offering Web Science undergraduate programmes. Currently there are no definitive curriculum guidlines for Web Science. Attempts at creating a formal subject definition for Web Science were made during the early days of formal Web Science teaching, with the Web Science Subject categorisation being released for public use in 2011. However, this was derived using a formal top down, theoretical approach. In practice, Web Science as it is researched and taught differs significantly from the formal model. While it is valuable for educators to have a formal definition of a curriculum, the process of manually assembling such a curriculum is onerous and protracted.Conventional top down methods of curriculum design typically involve an international panel of experts meeting, conferring, creating an initial definition and sharing it for consultation with educators and other experts. This method is both time consuming and expensive. Therefore, within a rapidly developing field such as Web Science, a definition created using the typical top down approach is highly likely to become outdated by the time it could be formally defined. In order to address this problem, research which identifies from the ground up, the content and different types of teaching of Web Science at different academic levels, can usefully be used to define the curriculum. Despite the fact that the proposed process for creating the proposed curriculum for Web Science follows a bottom up approach as opposed to a top down approach, it is still useful to look at the design and subject content of existing similar curricula. Similar existing curricula include not only the ACM Computer Science curriculum, but also the ACM Information Science curriculum. These ACM curricula are an appropriate point of subject comparison with Web Science, given that the ACM sponsor the Web Science conference, and there is likely to be a fair degree of similarity and shared attributes between the subjects. This paper provides a brief overview of the background of the Web Science subject, before explaining the bottom up approach and research methodology used during this study, and why the proposed research approach is suited to Web Science. A comparison is made between examples of typical core modules taught for Computer Science, Information Science and Web Science in order to explore the overlaps between subjects of the curricula, with the aim of understanding what elements these subjects have in common
Application of New Boradiaza-s-indacene Derivatives in Anion sensing and Molecular Logic Gates
No full textSeismic data reveal eastern Black Sea Basin structure
No full textRifted continental margins are formed by progressive extension of the lithosphere. The development of these margins plays an integral role in the plate tectonic cycle, and an understanding of the extensional process underpins much hydrocarbon exploration. A key issue is whether the lithosphere extends uniformly, or whether extension varies\ud
with depth. Crustal extension may be determined using seismic techniques. Lithospheric extension may be inferred from the waterloaded subsidence history, determined from\ud
the pattern of sedimentation during and after rifting. Unfortunately, however, many rifted margins are sediment-starved, so the subsidence history is poorly known.\ud
To test whether extension varies between the crust and the mantle, a major seismic experiment was conducted in February–March 2005 in the eastern Black Sea Basin (Figure 1), a deep basin where the subsidence history is recorded\ud
by a thick, post-rift sedimentary sequence. The seismic data from the experiment indicate the presence of a thick, low-velocity zone, possibly representing overpressured sediments. They also indicate that the basement and\ud
Moho in the center of the basin are both several kilometers shallower than previously inferred. These initial observations may have considerable impact on thermal models of the petroleum system in the basin. Understanding\ud
the thermal history of potential source rocks is key to reducing hydrocarbon exploration risk. The experiment, which involved collaboration between university groups in the United Kingdom, Ireland, and Turkey, and BP and\ud
Turkish Petroleum (TPAO), formed part of a larger project that also is using deep seismic reflection and other geophysical data held by the industry partners to determine the subsidence history and hence the strain evolution of\ud
the basin
Automated Optical Inspection for Quality Control in PCBA assembly lines: a case study for Point of Sale Devices Production Lines
No full textThis paper reports on the design and development of a customized Automated Optical Inspection (AOI) solution aimed at detecting defects in a production line related to the correct mounting of integrated circuits. Contrary to most solutions avail- able on the market, the developed system relies on deep learning to be able to perform detailed real-time visual inspections of components without the need to compare the captured photos with any reference images/golden sample. The proposed solution was designed to also provide good generalization capabilities, accommodating visual changes in the environment and in the structure of the component being produced. A custom testing machine was built in order to perform real-time inferences and validate the simulation results in a real-world setting
The Impact of Freeze Drying on Bioactivity and Physical Properties of Food Products
No full textFreeze drying (FD) is a technique used to preserve the bioactive content and flavor of samples. Foods with a short shelf life due to nature have been preserved via FD in recent years. The success of the drying technique is thanks to the high retention ability of the bioactive compounds and the flavor of the sample. However, the high cost and energy consumption of FD limit its usage in several fields. Freezing, primary drying, and secondary drying, which take place in the same device, are the stages of FD. In addition, several parameters, including pretreatment, size, temperature, sample species, time, and pressure, affect the FD process. These parameters are controlled to increase the effectiveness of FD on the samples. Moreover, FD has been compared with other drying techniques including hot air drying, microwave drying, vacuum drying, and solar drying to determine its protective capability. It has also been applied to the valorization of waste products, which is a common problem worldwide. For valorization, microencapsulation and powder production have been achieved using FD. In recent years, studies on the effects and use of FD on various materials increased, providing new aspects for the future of science and food industry
Mapping the web science curriculum(s)
No full textThis work describes a project which aims to explore the scope of the discipline Web Science; an emerging subject which is fundamentally inter-disciplinary. There are very few definitive subject definitions currently available for Web Science. Additionally, the nature of the subject is constantly evolving as an increasing number of different disciplines begin to practice what might identifiably be called Web Science. This potentially provides educators and students with a problem; how do you teach or learn about Web Science when there is no clear definition. The ultimate aim of this project is to collate and analyze current material available, in an attempt to provide recommendations for a clearer definition of Web Science
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Author Correction: Inceptor counteracts insulin signalling in β-cells to control glycaemia.
No full textIn this Article, the affiliations for author Ünal Coskun were incorrect. They should be ‘German Center for Diabetes Research (DZD), Neuherberg, Germany’, ‘Paul Langerhans Institute Dresden of Helmholtz Center Munich, Technical University Dresden, Dresden, Germany’ and ‘Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine and University Clinic Carl Gustav Carus, Technical University Dresden, Dresden, Germany’ (affiliations 2, 10 and 14, respectively), and not ‘Department of Microsystems Engineering (IMTEK), University of Freiburg, Freiburg, Germany’ (affiliation 5). The original Article has been corrected online
- …
