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The K-Nearest Neighbor (KNN) algorithm for text categorization is applied to CET4 essays. In this paper, each essay is represented by the vector space model (VSM). After removing the stop words, we chose the words, phrases and arguments as features of the essays, and the value of each vector is expressed by the term frequency and inversed document frequency(More)
BACKGROUND To explore the safety and feasibility of the transorally inserted anvil (OrVil) in laparoscopy-assisted total gastrectomy for gastric cancer. METHODS From December 2010 to June 2011, a total of 28 patients underwent laparoscopy-assisted total gastrectomy with a Roux-en-Y-esophagojejunostomy anastomosis with OrVil. Perioperative treatments,(More)
Tomicus yunnanensis Kirkendall and Faccoli (Coleoptera: Curculionidae: Scolytinae) is a newly described pine shoot beetle found in southwestern China. This beetle has affected >200,000 ha of Pinus yunnanensis (Franchet) forests over the past 30 yr. After maturation feeding in the shoots, adults attack the boles in December to produce a new generation. A(More)
To validate the efficacy and safety of laparoscopic total gastrectomy (LTG) for advanced gastric cancer (AGC). Laparoscopic distal gastrectomy (LDG) in the treatment of patients with local AGC is becoming increasingly popular, and there have been several multicenter randomized controlled trials focused on this treatment. However, few reports on the(More)
Parallel technology within section in combinatorics coding is researched. Parallel algorithm method on ordinal is advanced. To the sequence will be coded, pretreatment work have to be done at first, thus ordinal computing process can be merged to reduce computing quantity based on proportion computing method. Subsequently, the sequence needs to be separated(More)
A complete and harmonized fundamental circuit relational graph with four linear and four memory elements is constructed based on newly defined elements, which provides a guide to developing novel circuit functionalities in the future. In addition to resistor, capacitor and inductor which are defined in terms of a linear relationship between the charge q,(More)
Constant grade compression is a new compression method. But the speed of this method is too slowly. How to compute base-data is an important question in constant grade compression. The optimization on base-data computing is studied and the computing speed is advanced in this paper. Firstly, the theory of constant grade compression method is expatiated.(More)
This paper first generalizes the significance and present research situation of the building shadow extraction and elimination method. Then, an approach of automatic extracting shadows of building from remote sensing image is proposed, which based on the method that grey level statistics is done in one side of the structure lines. The approach, which(More)
To discriminate between earthquakes and explosions, spectrum range selection and spectrum resolution are sensitive and important constraint factors for recognition rate. This paper proposes a feature extracting algorithm for seismic wave spectrum analysis by using Chirp-Z transform. Initially by Fourier transform (FFT), overall spectrum layout is acquired.(More)
An efficient method was developed to fabricate a porous hybridizing nanotubes structure of amorphous carbon interspersed among Fe3O4 (C@Fe3O4) with a ∼200 nm diameter and ∼70 nm wall thickness. The as-structured porous nanotubes with ferromagnetic behaviour exhibited excellent microwave absorption properties, including a strong ability to attenuate the(More)