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25 Results Found

  • Feature Paper
  • Article
  • Open Access
848 Views
36 Pages

8 May 2026

Quantitative land cover records for geopolitically restricted regions remain extremely scarce, particularly for the pre-Landsat era. This study reconstructs long-term urban land cover dynamics in Pyongyang, Democratic People’s Republic of Korea...

  • Article
  • Open Access
22 Citations
5,967 Views
20 Pages

Monitoring Land Use/Land Cover and Landscape Pattern Changes at a Local Scale: A Case Study of Pyongyang, North Korea

  • Yong Piao,
  • Yi Xiao,
  • Fengdi Ma,
  • Sangjin Park,
  • Dongkun Lee,
  • Yongwon Mo,
  • Seunggyu Jeong,
  • Injae Hwang and
  • Yujin Kim

15 March 2023

One method of understanding landscape pattern changes is through an understanding of land use/land cover (LULC) changes, which are closely related to landscape pattern changes. Previous studies have monitored LULC changes across North Korea but did n...

(This article belongs to the Special Issue Local Scale Land Use and Land Cover Systems Monitoring Using Remote Sensing)
  • Article
  • Open Access
23 Citations
9,849 Views
36 Pages

Update on Distribution and Conservation Status of Amphibians in the Democratic People’s Republic of Korea: Conclusions Based on Field Surveys, Environmental Modelling, Molecular Analyses and Call Properties

  • Amaël Borzée,
  • Spartak N. Litvinchuk,
  • Kyongsim Ri,
  • Desiree Andersen,
  • Tu Yong Nam,
  • Gwang Hyok Jon,
  • Ho Song Man,
  • Jong Sik Choe,
  • Sera Kwon and
  • Yikweon Jang
  • + 11 authors

9 July 2021

Determining the range, status, ecology and behaviour of species from areas where surveys and samplings are uncommon or difficult to conduct is a challenge, such as in the Democratic People’s Republic of Korea (DPR Korea). Here, we used genetic sample...

(This article belongs to the Section Herpetology)
  • Article
  • Open Access
11 Citations
5,730 Views
18 Pages

A Damage Model Reflecting the Interaction between Delamination and Intralaminar Crack for Failure Analysis of FRP Laminates

  • Kumchol Yun,
  • Songhun Kwak,
  • Zhenqing Wang,
  • Mengzhou Chang,
  • Jonggun Kim,
  • Jingbiao Liu and
  • Cholsu Ri

16 January 2019

In this paper, a progressive damage model reflecting the interaction between delamination and intralaminar crack is developed to predict fracture behaviors and the ultimate load-bearing ability of the fiber-reinforced polymer laminates subject to qua...

  • Article
  • Open Access
8 Citations
3,765 Views
13 Pages

Fractal Interpolation Using Harmonic Functions on the Koch Curve

  • Song-Il Ri,
  • Vasileios Drakopoulos and
  • Song-Min Nam

The Koch curve was first described by the Swedish mathematician Helge von Koch in 1904 as an example of a continuous but nowhere differentiable curve. Such functions are now characterised as fractal since their graphs are in general fractal sets. Fur...

(This article belongs to the Special Issue Fractal Functions and Applications)
  • Article
  • Open Access
10 Citations
5,016 Views
16 Pages

A Study on the Effect of TMT Characteristics and Vertical Dyad Similarity on Enterprise Achievements

  • Jianzhong Xu,
  • Kumchol Yun,
  • Fu Yan,
  • Paeksan Jang,
  • Jonggun Kim and
  • Cholho Pang

22 May 2019

The top management team (TMT) is a key resource for an enterprise’s sustainability, and the study of TMT characteristics is very important to explain the factors involved in an enterprise’s development. In order to comprehensively evaluat...

  • Article
  • Open Access
19 Citations
5,457 Views
19 Pages

Characterization of Urban Heat Islands Using City Lights: Insights from MODIS and VIIRS DNB Observations

  • Jingjing Song,
  • Jun Wang,
  • Xiangao Xia,
  • Runsheng Lin,
  • Yi Wang,
  • Meng Zhou and
  • Disong Fu

11 August 2021

An urban heat island (UHI) is a phenomenon whereby the temperature in an urban area is significantly warmer than it a rural area. To further advance the characterization and understanding of UHIs within urban areas, nighttime light measured by the Da...

(This article belongs to the Special Issue Artificial Intelligence in Remote Sensing of Atmospheric Environment)
  • Communication
  • Open Access
10 Citations
4,652 Views
10 Pages

Improvement of Trehalose Production by Immobilized Trehalose Synthase from Thermus thermophilus HB27

  • Jing Sun,
  • Shizeng Wang,
  • Wenna Li,
  • Ruimin Li,
  • Sheng Chen,
  • Hyon Il Ri,
  • Tae Mun Kim,
  • Myong Su Kang,
  • Lu Sun and
  • Qipeng Yuan
  • + 1 author

Trehalose is a non-reducing disaccharide with a wide range of applications in the fields of food, cosmetics, and pharmaceuticals. In this study, trehalose synthase derived from Thermus thermophilus HB27 (TtTreS) was immobilized on silicalite-1-based...

(This article belongs to the Section Chemical Biology)
  • Article
  • Open Access
8 Citations
4,216 Views
16 Pages

1 December 2021

In recent years, much attention has been given to the current situation and trend regarding economic development in the Democratic People’s Republic of Korea (DPRK), of which urbanization is an important indicator. In the present study, (i) the...

(This article belongs to the Special Issue Applications of AI and Remote Sensing in Urban Systems)
  • Article
  • Open Access
21 Citations
18,737 Views
15 Pages

2 February 2022

North Korea’s economic and technological backwardness does not seem to allow Pyongyang to possess proficient cyberwarfare capabilities. Yet, North Korea’s cyber offensive capabilities are a major security threat in a new convergence space...

  • Article
  • Open Access
1 Citations
3,360 Views
15 Pages

A New Case-Mix Classification Method for Medical Insurance Payment

  • Hongliang Liu,
  • Jinpeng Tan,
  • Kyongson Jon and
  • Wensheng Zhu

11 May 2022

Rapidly rising medical expenses can be controlled by a well-designed medical insurance payment system with the ability to ensure the stability and development of medical insurance funds. At present, China is in the stage of exploring the reform of th...

(This article belongs to the Special Issue Statistical Modeling for Analyzing Data with Complex Structures)
  • Article
  • Open Access
18 Citations
5,390 Views
19 Pages

17 July 2019

In general, for the WPT (Wireless Power Transfer) system, as the mutual inductance and load resistance are calculated according to the measured data of both the transmitter and receiver, the wireless communication modules are needed to share data. A...

  • Article
  • Open Access
11 Citations
5,512 Views
13 Pages

5 November 2021

A good tourism image can significantly enhance the travel willingness and experience of international tourists. Most related research focused on the tourism image perception of world-famous cities, but research on the tourism image of North Korea is...

(This article belongs to the Section Tourism, Culture, and Heritage)
  • Article
  • Open Access
7 Citations
3,473 Views
16 Pages

Optimal Position of the Intermediate Coils in a Magnetic Coupled Resonant Wireless Power Transfer System

  • Dongsheng Yang,
  • Jiangwei Tian,
  • Sokhui Won,
  • Bowen Zhou,
  • Zixin Cheng and
  • Bo Hu

20 October 2019

Coaxial coil topology is used as the transfer medium in traditional MCR-WPT (Magnetic Coupled Resonant Wireless Power Transfer) systems to improve the transfer characteristics. The intermediate coils are added to extend the transmission distance, who...

  • Article
  • Open Access
5 Citations
5,395 Views
13 Pages

4 July 2022

In response to widespread deforestation, North Korea has restored forests through national policy over the past 10 years. Here, the entire process of forest degradation and restoration was evaluated through satellite-based vegetation monitoring, and...

(This article belongs to the Section Forest Ecology and Management)
  • Review
  • Open Access
9 Citations
3,512 Views
18 Pages

The goal of this paper is to review the research advances in deformation and permeability evolution during the creep of rocks in geoengineering problems through aspects of experiments, models, and methods. On the experimental side, we reviewed the re...

(This article belongs to the Special Issue Multiscale and Multiphysics Modeling of Sub-Surface Geological Systems)
  • Article
  • Open Access
1 Citations
3,389 Views
14 Pages

28 July 2022

Grain problems in the Democratic People’s Republic of Korea (DPRK) have been the focus of global attention for many years. In this context, scientific evaluations of grain supply and consumption are very important as a component of agricultural...

(This article belongs to the Special Issue Environmental Economics and Sustainability Policy)
  • Article
  • Open Access
37 Citations
4,823 Views
32 Pages

6 September 2021

Although the combination of Airborne Laser Scanning (ALS) data and optical imagery and machine learning algorithms were proved to improve the estimation of aboveground biomass (AGB), the synergistic approaches of different data and ensemble learning...

(This article belongs to the Special Issue Deep Learning Methods for Remote Sensing)
  • Article
  • Open Access
6 Citations
5,583 Views
26 Pages

9 May 2021

Numerous seismic activities occur in North Korea. However, it is difficult to perform seismic hazard assessment and obtain zonal data in the Korean Peninsula, including North Korea, when applying parametric or nonparametric methods. Remote sensing ca...

(This article belongs to the Special Issue Spatial Modelling of Natural Hazards and Water Resources through Remote Sensing, GIS and Machine Learning Methods)
  • Article
  • Open Access
22 Citations
7,969 Views
16 Pages

13 November 2013

The Democratic People’s Republic of Korea (DPR Korea) suffered considerable upland deforestation during the 1990s, yet its consequences remain relatively unknown. This paper examines this deforestation and resulting land-use change patterns by analys...

  • Article
  • Open Access
8 Citations
4,619 Views
24 Pages

Exploring the Factors Driving Changes in Farmland within the Tumen/Tuman River Basin

  • Cholhyok Kang,
  • Yili Zhang,
  • Basanta Paudel,
  • Linshan Liu,
  • Zhaofeng Wang and
  • Ryongsu Li

Understanding farmland changes and their mechanisms is important for food security and sustainable development. This study assesses the farmland changes and their drivers within the Tumen River of China and the Tuman River within the Democratic Peopl...

  • Article
  • Open Access
20 Citations
3,410 Views
26 Pages

13 June 2019

The economic load dispatch (ELD) problem is a complex optimization problem in power systems. The main task for this optimization problem is to minimize the total fuel cost of generators while also meeting the conditional constraints of valve-point lo...

  • Article
  • Open Access
35 Citations
6,474 Views
19 Pages

The Driving Force Analysis of NDVI Dynamics in the Trans-Boundary Tumen River Basin between 2000 and 2015

  • CholHyok Kang,
  • Yili Zhang,
  • Zhaofeng Wang,
  • Linshan Liu,
  • Huamin Zhang and
  • Yilgwang Jo

18 December 2017

Vegetation dynamics in relation to climatic changes and anthropogenic activities is critical for terrestrial ecosystem management. The objective of this study was to investigate spatiotemporal change of vegetation and their driving forces during grow...

  • Article
  • Open Access
14 Citations
3,201 Views
12 Pages

13 August 2022

Salt stress is one of the main abiotic factors affecting castor yield. Wild castor resources can provide important insights for cultivated castor breeding. However, little is known about how wild castor responds or adapts to salt stress. To understan...

(This article belongs to the Section Environmental Sustainability and Applications)
  • Article
  • Open Access
5 Citations
4,270 Views
19 Pages

8 May 2019

Water resource management is critical for the economic development of the Democratic People’s Republic of Korea (DPRK), where runoff plays a central role. However, long and continuous runoff data at required spatial and temporal scales are gene...

(This article belongs to the Special Issue Climate Variability and Climate Change Impacts on Land Surface, Hydrological Processes and Water Management)