Real-Time Misbehavior Detection in IEEE 802.11e Based WLANs

The Enhanced Distributed Channel Access (EDCA) specification in the IEEE 802.11e standard supports heterogeneous backoff parameters and arbitration inter-frame space (AIFS), which makes a selfish node easy to manipulate these parameters and misbehave. In this case, the network-wide fairness cannot be achieved any longer. Many existing misbehavior detectors, primarily designed for legacy IEEE 802.11 networks, become inapplicable in such a heterogeneous network configuration. In this paper, we propose a novel real-time hybrid-share (HS) misbehavior detector for IEEE 802.11e based wireless local area networks (WLANs). The detector keeps updating its state based on every successful transmission and makes detection decisions by comparing its state with a threshold. We develop mathematical analysis of the detector performance in terms of both false positive rate and average detection rate. Numerical results show that the proposed detector can effectively detect both contention window based and AIFS based misbehavior with only a short detection window.Comment: Accepted to IEEE Globecom 201

Research Progress in the Treatment of Pituitary Tumors

Pituitary tumor is a common intracranial neuroendocrine tumor, generally belonging to benign tumors. It mainly originates from pituitary cells in the sella region. There is no significant difference in the ratio of men to women. The tumor grows to the lower part of the parasellar thalamus, and may even reach the third ventricle to involve the cavernous sinus, extend into the middle cranial fossa, grow into the interpeduncular cistern, and enter the nasopharynx in the sphenoid sinus. A few tumors are rich in blood supply and easy to bleed, leading to pituitary tumor stroke. The incidence of pituitary tumor ranks the third among intracranial tumors. In recent years, with the development of endocrine examination and imaging technology, the detection rate is increasing year by year. The hormone disorder and the pressure on the surrounding important tissues will have a great impact on the quality of life of patients, and have a great impact on the growth and development of patients, labor ability, growth and development and social psychology. In this paper, the research progress of three methods for the treatment of pituitary tumor (surgical therapy, drug therapy, radiation therapy) is reviewed, aiming to provide reference for the clinical treatment of this disease

Surgical Treatment of Hypertensive Cerebral Hemorrhage

Intracerbral hemorrhage (ICH) refers to primary non-traumatic hemorrhage in the parenchyma, also known as spontaneous cerebral hemorrhage, accounting for 20%-30% of acute cerebrovascular diseases. Every year 2 million to 3 million people in the world suffer from intracerebral hemorrhage, accounting for 10%-15% of all new strokes, and the total incidence of intracerebral hemorrhage in the world is 24.6/ (100,000 · year). In China, the incidence of cerebral hemorrhage is 60-80/ (100,000 · year), which is much higher than that of other Asian countries. Primary intracerebral hemorrhage accounts for 80%-85%, and primary hypertensive intracerebral hemorrhage combined with hypertension accounts for 50%-70% [1]. Hypertensive intracerebral hemorrhage accounts for about 50% of the causes of non-traumatic intracerebral hemorrhage, and its mortality rate takes the first place in non-traumatic intracerebral hemorrhage [2]. Hypertensive intracerebral hemorrhage has rapid onset, high mortality rate and slow recovery, and often leaves various degrees of neurological dysfunction. This paper analyzes the pathological features of hypertensive intracerebral hemorrhage, the clinical features of the bleeding site, the indications, timing, surgical methods and the advantages and disadvantages of surgical treatment, hoping to provide reference for the selection of surgery for clinicians

Challenges and Strategy Design for the Globalization of Traditional Chinese Drugs

As economic exchange has deepened in the international community, traditional Chinese drugs have gone global and gained a share in overseas markets. However, due to internal and external restrictions, only a small proportion of traditional Chinese drugs can gain access to mainstream drug markets in foreign countries. This article designs strategies and provides suggestions for globalizing the presence of traditional Chinese drugs based on an analysis of the current conditions and challenges of this globalization process

Adaptive Assignment for Geometry Aware Local Feature Matching

The detector-free feature matching approaches are currently attracting great attention thanks to their excellent performance. However, these methods still struggle at large-scale and viewpoint variations, due to the geometric inconsistency resulting from the application of the mutual nearest neighbour criterion (\ie, one-to-one assignment) in patch-level matching.Accordingly, we introduce AdaMatcher, which first accomplishes the feature correlation and co-visible area estimation through an elaborate feature interaction module, then performs adaptive assignment on patch-level matching while estimating the scales between images, and finally refines the co-visible matches through scale alignment and sub-pixel regression module.Extensive experiments show that AdaMatcher outperforms solid baselines and achieves state-of-the-art results on many downstream tasks. Additionally, the adaptive assignment and sub-pixel refinement module can be used as a refinement network for other matching methods, such as SuperGlue, to boost their performance further. The code will be publicly available at https://github.com/AbyssGaze/AdaMatcher.Comment: Accepted by CVPR202

MTR4 drives liver tumorigenesis by promoting cancer metabolic switch through alternative splicing.

The metabolic switch from oxidative phosphorylation to glycolysis is required for tumorigenesis in order to provide cancer cells with energy and substrates of biosynthesis. Therefore, it is important to elucidate mechanisms controlling the cancer metabolic switch. MTR4 is a RNA helicase associated with a nuclear exosome that plays key roles in RNA processing and surveillance. We demonstrate that MTR4 is frequently overexpressed in hepatocellular carcinoma (HCC) and is an independent diagnostic marker predicting the poor prognosis of HCC patients. MTR4 drives cancer metabolism by ensuring correct alternative splicing of pre-mRNAs of critical glycolytic genes such as GLUT1 and PKM2. c-Myc binds to the promoter of the MTR4 gene and is important for MTR4 expression in HCC cells, indicating that MTR4 is a mediator of the functions of c-Myc in cancer metabolism. These findings reveal important roles of MTR4 in the cancer metabolic switch and present MTR4 as a promising therapeutic target for treating HCC