The Daba Mountain area is recognized as one of the global biodiversity hotspots. In recent years, human–wildlife conflicts (HWCs) in this region have intensified significantly. Understanding and mitigating damage caused by wildlife crucial for maintaining ecological balance enhancing public welfare. We analyzed current status HWCs southern foothills Mountains through semi-structured interviews field surveys. Additionally, using collected data on HWC occurrences, we predicted hotspots maximum...

Climate change poses a significant threat to biodiversity. Predicting the impacts of climate on species distribution and dispersal through computational models big data analysis can provide valuable insights. These predictions are crucial for developing effective strategies mitigate threats that Our study investigated potential impact an umbrella (Ursus arctos pruinosus) in Western Sichuan Province, China. We employed MaxEnt Circuit Theory assess both current future shifts migration...

An explicit adaptive traffic allocation scheme is investigated in terms of the cooperation across wireless wide area networks (WWANs) and personal network (WPAN). The analysis numerical simulations indicate that proposed achieves inter-networking load balance to minimize whole transmission delay expands communication ability single-mode terminals support high data rate traffics.

Background：This study reports experience of wound care at the site cannulation in case a patient with dilated cardiomyopathy (DCM) weaned from extracorporeal membrane oxygenation (ECMO).

ABSTRACT The decline in biodiversity poses a serious threat to natural ecosystems and has become one of the most pressing global environmental issues. Establishing conservation priorities for protected areas (PAs) is direct effective measures. However, gaps arise as result existing problems spatial layout PAs, including overlapping protection scopes, artificial fragmentation ecological regions, well “over‐protection” “over‐exploitation.” To optimize PAs improve efficiency conservation, we...

In this paper, the inter-cell interference coordination (ICIC) is investigated for downlink transmission in OFDMA-based multi-cellular systems. The utility function introduced to balance efficiency and fairness. Firstly, system model built based on resource allocation rules of soft frequency reuse (SFR) utility-based optimization problem formulated. Secondly, simplified analyzed 3-cell layout obtain a local optimizing rule. Thirdly, distributed heuristic ICIC scheme developed which part...

In the spectrum sharing systems, an unlicensed (secondary) user may share a frequency band with its licensed (primary) as long transmission does not interfere primary user's communications. For cognitive wireless relay networks, this interference regulation from affect cooperative scheme. paper, we investigate outage performance of networks in environment, which secondary users including source and relays take advantage to transmit data receiver while interfering communication. particular,...

For UTRAN Long Term Evolution (LTE) systems, inter-cell interference is the most important source. Inter-cell coordination (IOC) considered to improve coverage and increase data rate at cell edge. The current consensus of IOC scheme towards semi-static soft frequency reuse (SFR). Due limitation resource configuration way for semi-statci SFR, problems will be met when applying traditional admission control strategy SFR deployment. In this paper, we have investigated joint design corresponding...

This paper considers the scheduling and resource allocation problem for downlink OFDMA/SDMA systems with objective to maximize system capacity guarantee each user's QoS requirements. A mathematical formulation of optimization is established based on utility function, then detailed proof equivalent optimal policy given. The developed can decouple complex joint space-time-frequency into simple single-subcarrier problem. Moreover, a low-complexity algorithm according spatial separability...

In this paper, we propose a novel cross layer packet scheduling algorithm for real time (RT) traffics in multiuser downlink MIMO-OFDMA wireless systems. The dynamically allocates the resources space, and frequency domain based on channel state information (CSI), users' quality of service (QoS) requirements queue (QSI). To provide high data rate spectrum efficiency, adaptive modulation coding (AMC) is employed every eigenmode subchannel. proposed can improve cell throughput, increase number...

In this paper, we propose a novel channel quality indicator (CQI) feedback reduction scheme. the proposed scheme, base station (BS) calculates urgency information of each user according to service (QoS) and queue conditions informs users their information, then will send CQI with different schemes which are threshold based scheme best-m This hybrid overcomes disadvantages both It not only reduces load but also guarantees fairness QoS requirement bad condition. The is good tradeoff between...

In this paper, subcarrier and power allocation problems for multiuser downlink MIMO–OFDMA of the FuTURE B3G TDD system are investigated. For reciprocity channel, channel state information can be employed at transmitter, thus eigen beamforming implemented efficiently. With goal minimizing total transmit under condition that QoS requirement each user guaranteed, a novel dynamic resource scheme is proposed to exploit diversity gain. The algorithm involves adaptive allocation, modulation...

In this paper, dynamic resource allocation problems for multi-user downlink MIMO-OFDMA are investigated. With the goal of minimizing total transmit power under condition that QoS different users can be guaranteed, a novel algorithm is proposed. First all, new subcarrier policy given based on perfect CSI. And then spatial subchannels grouping mechanism proposed bit allocation. order to utilize efficiently, exploits all non-zero data. The scheme reduces computational complexity significantly...

In this paper, a new QoS-Guarantee resource allocation scheme is proposed for multi-user MIMO- OFDM systems. Based on channel state information (CSI) , the base station (BS) employs singular value decomposition (SVD) to transmit MIMO into parallel eigenmode subchannels each subcarrier, and then subcarriers, bits power are dynamically allocated users according user's support subcarrier rate, queue status of traffics quality service (QoS) requirement. Moreover, reallocation executed in order...

The scheduling problem in downlink of the cooperative multi-cell system is investigated this paper. Multi-cell processing (MCP) has potential to boost spectral efficiency and improve fairness. However, traditional centralized scheme, where a central unit assumed with global knowledge all required channels user messages jointly design transmitted signals for BSs, incurs significant overhead complexity, will hinder practical implementation MCP. We adopt decentralized scheme adaptive linear...

National parks act as significant carbon reserves and sinks, yet their ability to offset emissions is under threat, underscoring the need for stringent greenhouse gas emission control reduction measures. Previous research has lacked detailed spatial inventories of from all national park sources at a level, impeding development precise management strategies. In this study, we conducted uniform analysis across five in China year 2020 scale. It quantitatively assesses distribution...

Abstract In the development of modern urban gardens, delving into visitor experience perception to address homogenization issues is a crucial means enhance garden space characteristics and meet diverse demands. This study selected nine representative gardens in Taihu Lake region as samples. Utilizing machine learning techniques combined with image semantic segmentation principal component analysis, it systematically assessed various microscopic features explored their relationship actual...

Invasive alien species often undergo shifts in their ecological niches when they establish themselves environments that differ from native habitats. Leptocybe invasa Fisher et LaSalle (Hymenoptera: Eulophidae), specifically, has caused huge economic losses to Eucalyptus trees Australia. The global spread of eucalyptus cultivation allowed L. threaten plantations beyond its habitat. It is, therefore, urgent implement effective control measures mitigate the impact this pest. optimized MaxEnt...