Báo cáo khoa học: "Tissue engineered fetal skin constructs for pediatric burns" pptx

... coworkers [3], fetal skin constructs (FSCs) were produced using a single donation of fetal skin (4 cm 2 biopsy taken from a terminated pregnancy at 14 weeks of gestation, following written informed consent ... They showed that FSCs reduced the need for autografting of deep second degree burns, with little hypertrophy of new skin and no skin contraction. Despite the enthusiasm...

Ngày tải lên: 12/08/2014, 23:20

... prefers a fork-like substrate for its unwinding activity [18]. Helicases as drug and therapeutic target Resistance to the most efficient, reasonably priced and safe antimalarials has called for the ... have been suggested for a number of the conserved motifs [10– 12]. For example, motif I (A ⁄ GxxGxGKT), motif II (VLDEAD), motif III (SAT) and motif VI (HRIGRxxR) are responsible for A...

Ngày tải lên: 18/02/2014, 16:20

... practical solution for many NLP problems. This paper presents new, concise ILP formu- lations for projective and non-projective depen- dency parsing. We believe that our formula- tions can pave the way for ... respect to exact inference for the same set of features. Bold indicates the best result for a language. As for overall performance, both the exact and relaxed full model out...

Ngày tải lên: 20/02/2014, 07:20

... as information about which topics one of the arguments favors can help inform the topics chosen for the other. For example, class pairs such as (team, game), (politician, political is- sue) form ... corpus. Formally, LDA generates each argument in the corpus of relations as follows: for each topic t = 1 . . . T do Generate β t according to symmetric Dirich- let distribution Dir(η). end...

Ngày tải lên: 07/03/2014, 22:20

... include in- dicator features of fertility for common words. 3 We also include monolingual phrase features that expose useful information to the model. For instance, English bigrams beginning with ... are useful for training alignment models (Fraser and Marcu, 2006; Fraser and Marcu, 2007). The ITG gram- mar formalism, the corresponding word alignment class, and inference procedures for...

Ngày tải lên: 07/03/2014, 22:20

... defin- ing the feature vector is needed for the search in Section 3: the contribution of the ’negative’ fea- tures for c = 0 is only computed when Eq. 1 is evaluated for the highest scoring final hypothesis in ... In the feature vector f (c, S, T ), each feature f i occurs potentially twice, once for each class c ∈ {0, 1}. For the feature vector f(c = 1, S, T ), all the fea- ture valu...

Ngày tải lên: 17/03/2014, 02:20

... estimate a model from unaligned data. 4 A Probabilistic TSG Formalism For expository reasons (and to fill a gap in the literature), first we formally present non-synchronous TSG. Let Q be a set of ... statistical formalisms (limited to isomorphic trees), synchronous TSG allows local distortion of the tree topol- ogy. We reformulate it to permit dependency trees, and sketch EM/Viterbi algorith...

Ngày tải lên: 17/03/2014, 06:20

... Association for Computational Linguistics High Throughput Modularized NLP System for Clinical Text Serguei Pakhomov James Buntrock Patrick Duffy Mayo College of Medicine Division of Biomedical Infor- matics ... ex- isting interface feeds for clinical documents by routing them to the warehouse. A work manager was written using messaging queues to distribute work for text analysi...

Ngày tải lên: 31/03/2014, 03:20

... characteristic landform features within an area (Mollard and Janes, 1984). In addition, most land- form/surficial patterns (ie either individual landforms or complexes of 2 or 3 landform conditions) ... treatment units for regional forest inventories, or other extensive applications (Racey et al, 1989b). Using a regional climate model to help character...

Ngày tải lên: 08/08/2014, 19:21

... to incorporate prior information about G in the estimation procedure. For example, this prior information could stem from previous data sets pertinent to the problem. The form of [30] ... obtained using Fisher’s informa- tion measure for a multinomial distribution. This yields In the case of two binary traits, [41] and [42] reduce to the for...

Ngày tải lên: 09/08/2014, 22:22