Báo cáo " Optical transition of Eu3+ in Mg(Al1-x Eux)2O4 " doc

... method. Optical properties of the material were investigated. The nature of lines in luminescence spectra is related to the electron transitions of Eu 3+ ions corresponding to different sites in ... study of optical properties of trivalent europium ions in powders of Mg(Al 1-x Eu x ) 2 O 4 synthesized by citrate gel method. Our investigation are mainly focused on t...

Ngày tải lên: 28/03/2014, 13:20

... a corpus of doc- uments D i , a search engine ranks all documents in D i according to their relevance to the query Q. If instead of the corpus D i , the respective summaries of all documents ... for as- sessing therelative decrease in retrieval performance when indexing summaries instead of full documents. The idea behind it is similar to (Sparck-Jones and Sakai, 2001). In tha...

Ngày tải lên: 20/02/2014, 16:20

... stamps, question numbers, and indica- tions of the original language in which each speech was delivered. We retain this auxiliary information in the form of comments sprin- kled throughout the ... ple in the eighth line on the left-hand side of Figure 1. We mark the beginning of a parliamentary session with a Document comment as shown in Sentence 1 on the right-hand...

Ngày tải lên: 20/02/2014, 21:20

... deter- mined by a number of factors, including that agent's current goals in the domain, and a set of obligations that are induced by a set of social conventions. When planning, an agent ... towards this goal. This includes ac- cepting, rejecting, or requesting retraction of user proposals, requesting acceptance of or retracting system proposals, and initiating new syst...

Ngày tải lên: 20/02/2014, 21:20

... subjects of finite verbs have nomina- tive case, so in the FINITE class frame we stipulate (CASE NOMINATIVE) for the subject. If we used the complete mode of inheritance in determining the ... again on each of the subclasses, since the information will be inherited by each subclass. This class linkage is transi- tive, so information can be inherited through any num- ber of...

Ngày tải lên: 21/02/2014, 20:20

... positive words in a document, and aggregate their counts to determine the final document po- larity, ignoring the targets of the opinions. Some work in product review mining finds aspects of a central ... challenging baseline methods. 1 Introduction This paper presents a method for debate-side clas- sification, i.e., recognizing which stance a per- son is taking in an online debate pos...

Ngày tải lên: 30/03/2014, 23:20

... one can look for the cause of the fail- ure of the parsing of a sentence not only in the presence of a form in this sentence, but also in the presence of a bigram 3 of forms. To perform this, one ... distinct parsing systems, which share the syntactic lexicon and the pre-parsing processing chain. We were thus able to identify missing and erroneous informa- tion in these re...

Ngày tải lên: 31/03/2014, 01:20

... n e are the energy levels of an individual well. In order to establish a set of quantum kinetic equations for acoustic and optical phonons, we use equation of motion of statistical average value ... analytic expression of parametric transformation coefficient of acoustic and optical phonons in doped superlattices is obtained, that depends non-linear on the concentrati...

Ngày tải lên: 22/03/2014, 11:20

... modifications should include avoidance of refined carbohydrates, including sweetened drinks, increased intake of omega-3 fatty acid, and small amounts of protein with each meal [11]. Behavioral inter- ventions ... competing for protein binding sites, resulting in increased bioavailabil- ity of free, active highly protein-bound drugs. Accumula- tion of active hydroxylated metabolit...

Ngày tải lên: 25/10/2012, 10:51

... conflict of in- terest exists. References 1 Timofeev I., Hutchinson PJ. Outcome after surgical decom- pression of severe traumatic brain injury. Injury 2006;37:1125-1132 2 Coplin WM. Intracranial ... Fol- lowing removal of part of the skull, they performed dural incisions in a stellate fashion. In this step, it is important that entrance points of major vessels are clos...

Ngày tải lên: 25/10/2012, 11:40