• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.6
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• pp.611-619
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• 2016

Success in modern war depends on electronic warfare. Therefore, It is very important to identify the kind of Radar PRI modulations in a lot of Radar electromagnetic waves. In this paper, I propose an algorithm to identify Linear up Sliding PRI, Non-Linear up Sliding PRI and Linear Down Sliding PRI, Non-Linear Down Sliding PRI among many Radar pulses. We applied not only the TDOA(Time Difference Of Arrival) concept of Radar pulse signals incoming to antennas but also a rising and falling curve characteristics of those PRI's. After making a program by such algorithm, we input each 40 data to those PRI's identification programs and as a result, those programs fully processed the data in according to expectations. In the future, those programs can be applied to the ESM, ELINT system.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.9 no.1
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• pp.69-77
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• 2014

Innopolis start-ups belong to the category of the research-based spin-offs, but in the meantime, has characteristics that separate them from the research-based spin-offs in terms of the process of technology commercialization. This study aims to assess the impacts of the foundation and management of the Innopolis start-ups in terms of expansion of entrepreneurship through entrepreneurial intention of researchers and economic achievements. A data set from 22 Innopolis start-ups and 200 researchers in 14 PRIs through door-to-door interviews and surveys is studied. Main findings are as follows: First, the foundation of the Innopolis start-up has a positive and strong impact on expansion of entrepreneurship through entrepreneurial intention of researchers. Second, technology transfer performance of researchers turns out to be major factor that affects entrepreneurial intention. Third, expansion of entrepreneurship, along with economic achievements characterized by sales, job creation and R&D investment, is a positive effect of the foundation and management of the Innopolis start-ups. The results of this paper provide an opportunity to test whether Innopolis start-up's strength in technology commercialization can be applied to actual management of the Innopolis startup and to examine the general direction in which the foundation and management of the Innopolis start-ups is heading.

• Korean Journal of Remote Sensing
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• v.34 no.6_1
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• pp.1055-1066
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• 2018

Vegetation indices on the basis of optical characteristics of vegetation can represent various conditions such as canopy biomass and physiological activity. Those have been mostly developed with the large-scaled applications of multi-band optical sensors on-board satellites. However, the sensitivity of vegetation indices for detecting vegetation features will be different depending on the spatial scales. Therefore, in this study, the investigation of photochemical reflectance index (PRI), known as one of useful vegetation indices for detecting photosynthetic ability and vegetation stress, under the three spatial scales was conducted using multi-spectral camera installed in unmanned aerial vehicle (UAV),field spectrometer, and leaf reflectometer. In the leaf scale, diurnal PRI had minimum values at different local-time according to the compass direction of leaf face. It meant that each leaf in some moment had the different degree of light use efficiency (LUE). In early growth stage of crop, $PRI_{leaf}$ was higher than $PRI_{stands}$ and $PRI_{canopy}$ because the leaf scale is completely not governed by the vegetation cover fraction.In the stands and canopy scales, PRI showed a large spatial variability unlike normalized difference vegetation index (NDVI). However, the bias for the relationship between $PRI_{stands}$ and $PRI_{canopy}$ is lower than that in $NDVI_{stands}$ and $NDVI_{canopy}$. Our results will help to understand and utilize PRIs observed at different spatial scales.