scholarly journals Monitoring of neck activity for early warning of cervical spondylosis

2022 ◽  
Vol 19 (1) ◽  
pp. 792-811
Author(s):  
Qing Zhang ◽  
◽  
Yixiang Li ◽  
Yajun Li ◽  
Xiaodong Yang ◽  
...  

<abstract> <p>Wireless body area networks (WBANs) is a new research hotspot with great development prospects. The non-contact sensing based on radio frequency signal can solve the issues of personal comfort and privacy. Detection of cervical motion range and cervical strain in time are important in diagnosis and prevention of cervical spondylosis. In this paper, channel state information is used to achieve smart perception and monitoring, timely and efficient detection of different postures and abnormal bending of the neck. It provides an efficient way for protecting cervical health, and also some help for doctors to understand the causes of cervical vertebral disease in a timely manner. The classification accuracy of the four activities reached 99.4%, 99.7%, 99.5% and 99.3%, respectively.</p> </abstract>

2013 ◽  
Vol 760-762 ◽  
pp. 190-193
Author(s):  
Ya Jing Wang ◽  
Ya Zhen Li ◽  
Jing Guan

MIMO and OFDM technology is the core technology of 4G network, and have great development prospects. The main drawback of MIMO-OFDM system is the high PAPR. This paper is based on Cross-antenna rotation and inversion and Active Constellation Extension. The paper proposed the joint algorithm to reduce PAPR in STBC MIMO-OFDM system. It makes use of time, space and frequency freedom to improve the PAPR performance. The simulation results show that the joint algorithm can effectively reduce the PAPR value and do not increase the bit error rate in STBC MIMO-OFDM system.


2020 ◽  
Vol 5 (2) ◽  
pp. 63-71
Author(s):  
Nicoleta-Daniela Milu

In Romania, large companies, most of which are multinationals, have made significant progress in integrating the concept of corporate social responsibility (CSR) into their activity. The concept of CSR in small and medium-sized companies is still in the early stages of reporting, but with great development prospects. Romanian companies have gradually begun to develop their own culture in terms of social responsibility. The main objective of this article is to analyze how Romanian authors approach CSR theories in their research. The CSR action is seen by the authors as an interdependent relationship between corporations and society. Social requirements are generally considered to be a way in which society interacts with the business environment and gives it a certain legitimacy and prestige. Given that the history of the concept of CSR is long and diverse, I must emphasize that this article focuses on the publications of Romanian authors who based their work on a theory of CSR, providing an original perspective and understanding of the concept of CSR. The research methodology approached involves analysis and synthesis appeal. The study shows that integrative theories are the most common, based on the papers of Romanian authors regarding the concept of CSR. Most articles are based on the idea that the business depends on society to continue its activity and to develop, there is an interdependent relationship between the company and society.


Author(s):  
N.I DIACHUK ◽  
◽  
N.S BOGDASHEVSKAYA ◽  
I.N TOLSTYKH ◽  
◽  
...  

The article analyzes the features of the development of scientific and educational show programs for children of primary school age, reveals the importance of developing scientific and educational programs for children 7-9 years old, considers enterprises for the organization of children's scientific and educational programs. In the modern period of tourism development in Russia, children's social tourism, which has its own characteristics and great development prospects, is of particular importance. At present, children's social tourism is poorly represented in the tourist services market. The development of various educational programs for children 7-9 years old will contribute to the development of children's social tourism. The relevance of this article is associated with an increased interest in the development of children's tourism, which is currently relevant.


2013 ◽  
Vol 734-737 ◽  
pp. 1253-1256 ◽  
Author(s):  
Pu Dong ◽  
Si You Wang

Recently,accelerating shale gas development and utilization is of great significance to safeguard the security of energy supply. As a new energy resource, shale gas has great development prospects, but to develop and to make use of this resource is quite difficult and has high risks due to the exploitation technology, environmental protection, the market, and so forth. It can help the shale gas companies get better development by focusing on the prospective risks that they may face and looking for the solutions. This paper analyzes the various risks that the shale gas development companies may face and puts forward the measurements to deal with these risks.


2013 ◽  
Vol 13 (9) ◽  
pp. S136
Author(s):  
Tetsuo Hayashi ◽  
Michael D. Daubs ◽  
Akinobu Suzuki ◽  
Kevin Phan ◽  
Trevor Scott ◽  
...  

2016 ◽  
Vol 29 (4) ◽  
pp. E196-E200 ◽  
Author(s):  
Tetsuo Hayashi ◽  
Michael D. Daubs ◽  
Akinobu Suzuki ◽  
Trevor P. Scott ◽  
Kevin Phan ◽  
...  

2021 ◽  
Vol 13 (1) ◽  
pp. 43-48
Author(s):  
Bashaer Hameed Karam ◽  
Hussain S. Hasan ◽  
Hassan Thabit Saeed

Abstract Study aim: The present study investigates the possible relation between the limitation of cervical motion in a patient with cervical spondylosis and hearing impairment. Material and methods: Cross-sectional research was performed based on 60 participants suffering from cervical spondylosis (CS) selected from an orthopaedic and physiotherapy department. The data collection techniques included questionnaire, electronic tools, measurements with a mechanical device including measuring the cervical range of motion (ROM) by goniometer, and physical examination including pure tone audiometry (PTA) and tympanogram. Results: Right rotation was the most common limitation, which affected 43 patients, followed by left rotation limitation, which was recorded in 40 patients. The extension, left lateral flexion, flexion, and right lateral flexion limitation showed less effect. Conclusions: Left rotation limitation was found to be an independent predictor of hearing impairment especially in men. Age was also a risk factor for sensory neural hearing loss (SNHL). These findings are important in the facilitation of investigating SNHL in cervical spondylosis patients.


Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2133
Author(s):  
Jie Yao ◽  
Fang Yao

As a kind of green and pollution-free renewable energy, wind energy has great development prospects. How to promote the development of the wind power industry and improve the efficiency of wind power development and utilization is an urgent problem that needs to be solved. On the basis of analyzing the current situation of China’s power development, especially wind power development, a data envelopment analysis (DEA) method was used to analyze China’s wind power development and utilization efficiencies from 2005 to 2020. The results show that the development efficiency of China’s wind power was mainly affected by pure technical efficiency, while the utilization efficiency of China’s wind power was mainly affected by scale efficiency. Therefore, when considering wind power development, the management of wind power development should be strengthened, in order to realize the optimal allocation of resources. In terms of wind power utilization, the output scale of wind power utilization should be expanded to increase the contribution of wind power products to the national economy.


2021 ◽  
Vol 27 (5) ◽  
pp. 476-480
Author(s):  
Jingjing Jiang

ABSTRACT Objective: With the increasing number and youth of patients with cervical spondylosis, people pay more and more attention to the cervical spine. Early diagnosis, intervention and treatment play an important role in the recovery of cervical spondylosis. With the continuous development of computer technology, the improvement of various modeling theories, and the application of image processing methods in orthopedics, new ideas are opened to observe cervical vertebra motion health. Methods: In this paper, the measurement of cervical motion is achieved by machine vision. A method of parameter measurement based on the constraint relationship of lower cervical motion is proposed. Based on image preprocessing, the left edge of the cervical vertebra was extracted and analyzed. Results: With the horizontal coordinate of registration point as the reference line, the changing trend of the angle between the left edge curve and the reference line of C4 and C5 vertebrae in the process of spontaneous flexion and extension of the cervical vertebrae was observed, and the movement rate of the cervical vertebrae was analyzed. Conclusions: It was found that the speed of the cervical vertebrae in the process of movement of the patients with cervical spondylosis showed jumping changes. Level of evidence II; Therapeutic studies - investigation of treatment results.


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