A Secure Image Steganography Using Shark Smell Optimization and Edge Detection Technique by Omar Y. Abdulhammed, Pshtiwan J. Karim, Dashne R. Arif, Twana S. Ali, Avin O. Abdalrahman, Arkan A. Saffer

“…Firstly, to promote the hiding ability and to realize altitude standard of secrecy the mystery message is separated into four parts and the cover image is masked and also divided into four sections, then the edge detection algorithm and shark smell optimization is performed on each section respectively. …”
Get full text

Ecological drivers shaping mainstem and tributary fish communities in the upper Jinsha River, southeastern Qinghai-Tibet Plateau by Pengcheng Lin, Masami Fujiwara, Baoshan Ma, Zhijun Xia, Xinghua Wu, Chunling Wang, Tao Chang, Xin Gao

“…Both environmental factors (e.g., altitude and the proportion of cobble substrate) and spatial variables were significantly correlated with fish beta diversity, but their relative importance differed between the mainstem and tributaries. …”
Get full text

Communautés paysannes et systèmes agraires dans une haute vallée andine (Pérou) by José Carlos Barrio de Pedro

“…There are oppositions between altitude and bottom valley, agriculture (rainfed, irrigated) and livestock (wool, milk), diversification and specialization, etc. …”
Get full text

Macroinvertebrate communities of karst springs in the Julian Alps in relation to environmental factors by Nataša Mori

“…The results of canonical correspondence analysis (CCA) showed that spring altitude and periphyton coverage were the only environmental parameters significantly influencing the macroinvertebrate community composition. …”
Get full text

Vertical gradients of neutral winds observed by ICON and estimated by the Horizontal Wind Model during the geomagnetic storm on August 26−28, 2021 by JiaWei Wu, Chao Xiong, YuYang Huang, YunLiang Zhou

“…On the dayside, during the main phase, the peak velocities of westward winds extend from a higher altitude to a lower altitude, whereas during the recovery phase, the peak velocities of the westward winds extend from lower altitudes to higher altitudes. …”
Get full text

FDFT1 inhibits macrophage M1 polarization and promotes colorectal cancer progression by GAO Yuan, HUANG Yulan, ZHAO Kun

Get full text

Application of invariant moment method for HAPS ISAR imaging with micro parts by Zhao-qun QI, Xiao-jun JING, Si-qing YOU, Hai-bin SUN

“…To resolve the micromotion in the HAPS(high altitude platform station) ISAR system,the invariant moment method for ISAR imaging with micro parts was proposed.Firstly,invariant moment tool was applied to classify the echoes of different sub-aperture,and then the sub-aperture echoes reducing the quality of image was separated.Finally the remaining echoes were used to do sub-aperture splicing imaging.From the simulation results,the algorithm is proved to be simple and can improve the quality of ISAR image obviously.…”
Get full text

Coenagrion hastulatum (Charpentier, 1825), new for the dragonfly fauna of Bosnia and Herzegovina (Odonata: Coenagrionidae) by Matjaž Bedjanič

“… At the high-altitude Donje Bare and Gornje Bare Lakes in the surroundings of Tjentište village, Zelengora Mts., Sutjeska National Park, SE Bosnia and Herzegovina, Coenagrion hastulatum was recorded on 26 June 2011. …”
Get full text

Unveiling the Space Weather During the Starlink Satellites Destruction Event on 4 February 2022 by Tong Dang, Xiaolei Li, Bingxian Luo, Ruoxi Li, Binzheng Zhang, Kevin Pham, Dexin Ren, Xuetao Chen, Jiuhou Lei, Yuming Wang

“…Model simulations driven by solar wind show that the first geomagnetic storm induced around 20% atmospheric density perturbations at 210 km altitude on 3rd February. The unexpected subsequent storm on 4th February led to a density enhancement of around 20%–30% at around 210 km. …”
Get full text

3‐D Regional Ionosphere Imaging and SED Reconstruction With a New TEC‐Based Ionospheric Data Assimilation System (TIDAS) by Ercha Aa, Shun‐Rong Zhang, Philip J. Erickson, Wenbin Wang, Anthea J. Coster, William Rideout

“…The spatial‐temporal resolution of the reanalyzed 3‐D electron density product is as high as 1° × 1° in latitude and longitude, 20 km in altitude, and 5 min in universal time, which is sufficient to reproduce ionospheric fine structure and storm‐time disturbances. …”
Get full text

CLINICAL PROFILES OF FROSTBITE IN DR. SOETOMO GENERAL ACADEMIC HOSPITAL: A CASE SERIES by Thomas Eduardus Sudrajat Wahyu Nugroho, Beta Subakti Nata’atmadja

“…Abstract: Introduction: Frostbite is a common cold-related injury, especially among mountaineers in high-altitude settings. These injuries can occur both in freezing and above-freezing temperatures. …”
Get full text

Evaluating Radio Occultation (RO) Constellation Designs Using Observing System Simulation Experiments (OSSEs) for Ionospheric Specification by Nicholas Dietrich, Tomoko Matsuo, Chi‐Yen Lin, Brandon diLorenzo, Charles Chien‐Hung Lin, Tzu‐Wei Fang

“…OSSE assessment, using multiple metrics, finds that greater EDP spatial coverage leading to improved specification at altitudes 300 km and above, with the 520 km altitude constellations performing best due to yielding the highest observation counts. …”
Get full text

Ecological Study of the Vegetation in the Loka Abaya National Park, Ethiopia by Assegid Assefa, Tamrat Bekele, Sebsebe Demissew, Tesfaye Abebe

“…Vegetation data and some environmental variables including physical and chemical properties of the soil, altitude, slope, and ecological disturbance were collected and subjected to the agglomerative hierarchical classification and ordination with the canonical correspondence analysis. …”
Get full text

On the reflection of Alfvén waves in an ideal magnetoatmosphere by Hadi Yahya Alkahby, M. A. Mahrous

“…Below the critical layer, the solution of the problem can be written as a linear combination of an upward and a downward propagating wave and above it the solution decays exponentially with the altitude. The location of the critical layer and the magnitude of the reflection coefficient are determined and the conclusions are discussed in cormeetion with the heating mechanism of the solar atmosphere…”
Get full text

A novel framework unveiling the importance of heterogeneous selection and drift on the community structure of symbiotic microbial indicator taxa across altitudinal gradients in amp... by Jin Zhou, Zhidong Liu, Sishuo Wang, Jing Li, Lin Zhang, Ziyan Liao

“…Amphibian symbiotic microbes along an altitudinal gradient from Sichuan Province, China, were employed to examine the proposed statistical framework. In different altitude groups, we found that heterogeneous selection governed the community structure of symbiotic microbes across DSUs, while stochastic processes tended to increase with altitude. …”
Get full text

Morphology and Immunoexpression of Selenoproteins in Term Placenta of Alpaca (<i>Vicugna pacos</i>) from the Peruvian Andes by Miluska Beatriz Navarrete Zamora, Francisco Acuña, Mônica Duarte da Silva, Thamires Santos-Silva, Matheus Henrique Herminio Garcia, Rodrigo da Silva Nunes Barreto, Alberto Sato Sato, Claudio Gustavo Barbeito, Maria Angelica Miglino

“…We hypothesize that the placenta of alpacas, adapted to high altitudes, has characteristics with other species also adapted to altitude. …”
Get full text

Trimetazidine: Activating AMPK Signal to Ameliorate Coronary Microcirculation Dysfunction after Myocardial Infarction by Xiaolong Qu, Pan Yang, Li Jiao, Yuehui Yin

Get full text

Ionospheric F‐Layer Scintillation Variabilities Over the American Sector During Sudden Stratospheric Warming Events by Hailun Ye, Xianghui Xue, Tao Yu, Yang‐Yi Sun, Wen Yi, Chi Long, Weifan Zhang, Xiankang Dou

“…Additionally, the types of SSW events may influence the decrease in altitude but not the occurrence rate. The decreased plasma vertical drift during prereversal enhancement, together with the changed meridional wind, are the possible mechanisms for the above results. …”
Get full text

Understanding Strong Neutral Vertical Winds and Ionospheric Responses to the 2015 St. Patrick's Day Storm Using TIEGCM Driven by Data‐Assimilated Aurora and Electric Fields by Xian Lu, Haonan Wu, Stephen Kaeppler, John Meriwether, Yukitoshi Nishimura, Wenbin Wang, Jintai Li, Xueling Shi

Get full text

Integrated development, risk management and community-based climate change adaptation in a mountain-plains system in Northern Tanzania by Elisabeth Edna Wangui, Thomas A. Smucker, Ben Wisner, Eric Lovell, Adolfo Mascarenhas, Maingi Solomon, Daniel Weiner, Abubakari Munna, Gaurav Sinha, Charles Bwenge, Hubert Meena, Pantaleo Munishi

“…We find evidence of a high degree of interdependence among groups of people of different language/cultural groups and socio-economic status interacting along environmental gradients from high to low altitude. We call this “socio-geographical adaptation” to climate change. …”
Get full text