Daejeon, South Korea
Daejeon, South Korea

Hannam University is a private Christian university in Daejeon, South Korea. It was founded in 1956. Wikipedia.


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Na Y.H.,Hannam University
Korea Australia Rheology Journal | Year: 2013

Polymer hydrogels attract attention as excellent soft and wet materials. However, common hydrogels are mechanically too soft and brittle to be used as load-bearing substances. By mimicking the structure of the articular cartilage, which is one of the native tough hydrogels, double network (DN) hydrogel with extremely high mechanical performance has been developed. Having high water content (about 90 wt%), DN gels consist of two types of polymer components with opposite physical natures: the minor component (the first network) abundantly cross-linked polyelectrolytes, and the major component (the second network) comprised of poorly cross-linked neutral polymers. Under suitable conditions, DN gels exhibit 0.1-1 MPa of elastic modulus, 20-60 MPa of compressive fracture stress, 1,000-2,000% of tensile strain, and 100- 1,000 J m-2 of fracture energy. These excellent mechanical properties are comparable to those of rubber and natural bio-tissues. This paper reviews the main principle of DN gels, including their preparation method, mechanical feature, and toughening mechanism. The processability and the applicability of DN hydrogels as biomaterials and as conductive materials are also discussed. © 2013 The Korean Society of Rheology and Springer.


Ryoo C.S.,Hannam University
Advanced Studies in Theoretical Physics | Year: 2014

In this paper we introduce the twisted (h, q)-tangent numbers n,q,w and polynomials Tn (h , q ) ,w(x). Some interesting results and relationships are obtained. © 2014 C. S. Ryoo.


Ryoo C.S.,Hannam University
Advanced Studies in Theoretical Physics | Year: 2013

In this paper we introduce the q-tangent numbers Tn,q and polynomials Tn,q(x). Some interesting results and relationships are obtained. © 2013 C. S. Ryoo.


Ryoo C.S.,Hannam University
Advanced Studies in Theoretical Physics | Year: 2013

In this paper we introduce the (h, q)-tangent numbers T(h) n,q and polynomials T(h) n,q (x). Some interesting results and relationships are obtained. © 2013 C. S. Ryoo.


Ryoo C.S.,Hannam University
Advanced Studies in Theoretical Physics | Year: 2013

In this paper we introduce the generalized twisted q-Euler numbers E(α)/n,χ,q,w and polynomials E(α)/n,χ,q,w(x). © 2013 Lhachmi El Badri et al.


Ryoo C.S.,Hannam University
Advanced Studies in Theoretical Physics | Year: 2013

In this paper we introduce the tangent numbers Tn and polynomials Tn(x). Some interesting results and relationships are obtained. © 2013 C. S. Ryoo.


Patent
Hannam University, Electronics and Telecommunications Research Institute | Date: 2013-04-25

A method of reusing a frequency by allocating two orthogonal signal waveforms to the same frequency band is as follows. Two high-frequency ocean surface radars can be operated in the same frequency band without mutual interference by allocating a signal having an up-chirped LFM waveform and a signal having a down-chirped LFM waveform, having the same frequency band, to the two radars by employing an orthogonal characteristic between the two signals. Furthermore, a plurality of radars located within a distance within which interference is possible can be operated without mutual interference by combining and allocating two orthogonal signals and a plurality of frequency bands.


Patent
Genewel Co. and Hannam University | Date: 2011-09-21

Provided is a thermosensitive composition preventing tissue adhesion and a method for preparing the same, and, more particularly, a thermosensitive composition preventing tissue adhesion which further contains a drug selectively inhibiting inflammatory response and a method for preparing the composition, in which the composition is produced through a chemical reaction by adding a cross-linking agent to an aqueous solution which contains a block copolymer containing a polyethyleneoxide block having the ability to suppress tissue adhesion, and a polymer with 10,000 to 1,000,000 g/mol of molecular weight which can be mixed with the copolymer; the composition is characterized in that the difference of viscosity, absorbance of visible rays region, and stability between the upper and lower liquid layers are within 10 % when centrifuging the composition; and also the method for preparing the composition enhances cross-linking homogenization and viscosity stability through simultaneous spraying and stirring methods without a reaction retardant.


Patent
Hannam University, Electronics and Telecommunications Research Institute | Date: 2012-05-11

A plug and play sensor module and sensor node are provided. The plug and play sensor module includes a sensor, a sensor interface that transmits and receives a signal for plug and play connection to and from a sensor node, and a plug and play connection processing unit that transmits a signal for connection confirmation to the sensor node through the sensor interface when being connected to the sensor node, and transmits sensor identification (ID) information to the sensor node when a sensor ID is requested by the sensor node.


Patent
Hannam University and Hanyang University | Date: 2011-11-14

Disclosed are a benzobis(thiadiazole)-based alternating copolymer, a method for preparing the same, and an organic electronic device including the same. The present disclosure provides a benzobis(thiadiazole)-based alternating copolymer represented by the chemical formula 1:

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