Rentable Internet of Things Infrastructure for Sensing as a Service (S2aaS)

Sensing as a Service (S2aaS) model [1] [2] is inspired by the traditional Everything as a service (XaaS) approaches [3]. It aims to better utilize the existing Internet of Things (IoT) infrastructure. S2aaS vision aims to create 'rentable infrastructure' where interested parties can gather IoT data by paying a fee for the infrastructure owners

The (unknown) role of map librarian and the challenge of satisfying the cartographic user needs

The (unknown) role of map librarian and the challenge of satisfying the cartographic user needs The profession of librarianship is developed and is being recognized in Sri Lanka. But we have neither heard of a map library nor a map librarian in our local environment. In Europe and USA map libraries are well known and map librarians are recognized Librarians who deal with maps come under the special library group and have to manage the map collection in a special manner. It needs specialized knowledge in managing map collection. Reading of maps needs technical equipments and storage and preservation too is different from books. Hence the librarian who deals with maps should undergo training to familiarize himself/herself with the technical methods of storage, search co ordination and manage archives and enhance access of cartographic materials. After world War 11 traditional map depositories are converted into cartographic centres and new technology is heavily used in map production, storage and usage. This paper highlights the role to be played by map librarians in a modern library using new technologies. Map users are very much advanced in using different type of technologies in reading, creating, copying etc.maps. This technological advancement has not caused much change in map collection in the developing countries. Even in the 21st century we see the traditional collection of maps in Sri Lanka. . While studying the situation (advance collection and advance users) in other countries, a sample study was carried out with reference to the local environment by selecting academic and special library groups. This paper elucidates the role played by a librarian who handle maps, who is not recognized as a map librarian It also discuses the attitudes of the cartographic users towards map libraries in our country the institutions where map collections are available, the barriers experienced by the users in accessing the collections, important issues neglected by the higher authorities and lack of a national body to authorize map production in the country. The role that could be played by the national body or a regulatory body such as management of collection and databases, setting of standards, copyright law and implementing a national policy in map production and the problems faced in producing maps are discussed. The study reveals that the gap between the traditional map libraries (collection) and the users of cartographic material is widening. The author suggests that the librarians could overcome this problem by undergoing professional training. This will change the attitude of the users towards the map librarians and map libraries. This will give recognition to the professionals who work as map librarians

A multiplicity result for the scalar field equation

We prove the existence of $N - 1$ distinct pairs of nontrivial solutions of the scalar field equation in ${\mathbb R}^N$ under a slow decay condition on the potential near infinity, without any symmetry assumptions. Our result gives more solutions than the existing results in the literature when $N \ge 6$. When the ground state is the only positive solution, we also obtain the stronger result that at least $N - 1$ of the first $N$ minimax levels are critical, i.e., we locate our solutions on particular energy levels with variational characterizations. Finally we prove a symmetry breaking result when the potential is radial. To overcome the difficulties arising from the lack of compactness we use the concentration compactness principle of Lions, expressed as a suitable profile decomposition for critical sequences

Molecular emulsions: from charge order to domain order

Aqueous mixtures of small molecules, such as lower n-alkanols for example, are known to be micro-segregated, with domains in the nano-meter range. One consequence of micro-segregated domains would be the existence of long range domain-domain oscillatory correlations in the various atom- atom pair correlation functions, and subsequent pre-peaks in the corresponding atom atom structure factors, in the q-vector range corresponding to nano-sized domains. However, no such pre-peak have ever been observed in the large corpus of radiation scattering data published so far. Here, through large scale simulations of aqueous-1propanol mixtures, I report that the domain pre-peak contributions in the atom-atom structure factors exactly cancel each other in the total scattering intensity, thus suppressing the pre-peak in agreement with the experimental findings. This cancellation is explained by drawing an analogy between the charge order found in ionic fluids and the segregated domain order. This finding opens new interpretation of the well known scattering pre-peak observed in micro-emulsions. In particular, it implies that scattering experiment cannot detect homogeneous domain segregation, hence cannot lead to a proper microscopic description of atom-atom correlations in domain ordered mixtures.Comment: 21 pages, 5 figures, research pape

Production of semi real time media-GIS contents using MODIS imagery

[Abstract]: Delivering environmental disaster information, swiftly, attractively, meaningfully, and accurately, to public is becoming a competitive task among spatial data visualizing experts. Basically, the data visualization process has to follow basics of spatial data visualization to maintain the academic quality and the spatial accuracy of the content. Here, “Media-GIS”, can be promoted as a one of the latest sub-forms of GIS, which targets mass media. Under Media-GIS, “Present” or the fist component of three roles of data visualization takes the major workload compare to other two, “Analysis” and “Explore”. When present contents, optimizing the main graphical variables like, size, value, texture, hue, orientation, and shape, is vital with regard to the target market (age group, social group) and the medium (print, TV, WEB, mobile). This study emphasizes on application of freely available MODIS true colour images to produce near real time contents on environmental disasters, while minimizing the production cost. With the brake of first news of a significant environmental disaster, relevant MODIS (250m) images can be extracted in GeoTIFF and KLM (Keyhole Markup Language) formats from MODIS website. This original KML file can be overlayed on Google Earth, to collect more spatial information of the disaster site. Then, in ArcGIS environment, GeoTIFF file can be transferred into Photoshop for production of the graphics of the target spot. This media-friendly Photoshop file can be used as an independent content without geo-references or imported into ArcGIS to convert into KLM format, which has geo-references. The KLM file, which is graphically enhanced content with extra information on environmental disaster, can be used in TV and WEB through Google Earth. Also, sub productions can be directed into print and mobile contents. If the data processing can be automated, system will be able to produce media contents in a faster manner. A case study on the recent undersea oil spill occurred in Gulf of Mexico included in the report to highlight main aspects discussed in the methodology