Design of a New Normally Closed Type Safety Valves for Gas

2013 ◽  
Vol 422 ◽  
pp. 113-117
Author(s):  
Ying He ◽  
Lan Ma ◽  
De Zhong Gao ◽  
Xiao Fei Dang ◽  
Li Chao Cheng
Keyword(s):  
College Students ◽  
Safety Valve ◽  
Control Circuit ◽  
Rubber Tube ◽  
Innovative Design ◽  
Type Safety ◽  
Closed Type ◽  
Design Competition ◽  
Utility Models ◽  
And Control

This paper elaborates much security menace of using gas and analysises defect of products now available, and advance a new normally closed type safety valve for gas, it can effectively prevent much security menace which was caused by the aging of the rubber tube and leak of the joints of the pipes. Design of structure and control circuit of the valve are introduced in this paper. And the security of this valve was tested and proved by experiment. In the Mechanical Innovative Design Competition for National College Students in 2010, this design gained the national first prize. Its practicability and innovativeness were highly acknowledged and appreciated by the industry experts and got patent for utility models in the same year.

The Effects of a Neutral Stimulus (Buzzer) on Motor Responses and Disfluencies in Normal Speakers

1969 ◽  
Vol 12 (1) ◽  
pp. 179-184 ◽  
Author(s):  
Richard R. Martin ◽  
Gerald M. Siegel
Keyword(s):  
College Students ◽  
Neutral Stimulus ◽  
Motor Responses ◽  
Control Subjects ◽  
And Control ◽  
Speaking Task

Seventy-two college students were divided into three groups: Button Push-Speech (BP-S), Speech-Button Push (S-BP), and Control. BP-S subjects pushed one of two buttons on signal for 8 min. During the last 4 min, depression of the criterion button caused a buzzer to sound. After the button-push task, subjects spoke spontaneously for 30 min. During the last 20 min, the buzzer was presented contingent upon each disfluency. S-BP subjects were run under the same procedures, but the order of button-push and speech tasks was reversed. Control subjects followed the same procedures as S-BP subjects, but no buzzer signal was presented at any time. Both S-BP and BP-S subjects emitted significantly fewer disfluencies during the last 20 min (Conditioning) than during the first 10 min (Baserate) of the speaking task. The frequency of disfluencies for Control subjects did not change significantly from Baserate to Conditioning. In none of the three groups did the frequency of pushes on the criterion button change significantly from minute to minute throughout the 8-min button-push session.

Design Policy Driven Development of Chinese Industry

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Fei HU ◽  
Kun ZHOU ◽  
Hongshi ZHOU
Keyword(s):  
Industrial Design ◽  
Modern Society ◽  
Yangtze River Delta ◽  
Regional Government ◽  
Delta Area ◽  
Chinese Industry ◽  
Design Competition ◽  
The Government ◽  
Macroeconomic Regulation And Control ◽  
And Control

Governments all over the world are paying great attention to economic innovation and the development of design in modern society. They are spending more and more recourses on making rules for Industrial Design Policy and measuring its implementation. As a method to make macroeconomic regulation and control by the government, the effectiveness and importance of design policy has already been widely admitted. In a macro-background of the three turns of Chinese design policy, taking the design policy of Guangdong province as an example, this article will analyze how local/regional government should respond to the national design policy. Based on the investigation and analysis of the winners of the "Guangdong Governor Cup Industrial Design Competition", this paper discusses how industrial design competition as a part of the design policy to support the development of industrial design. After making a comparison with the design policy of the Yangtze River Delta area, this article tries to enhance and perfect the current policy path.

scholarly journals Proposal of an Activity-Based Adaptive Process Model for Innovative Design

2013 ◽  
Author(s):  
Qiang Zhang ◽  
Ioana Deniaud ◽  
Claude Baron ◽  
Emmanuel Caillaud
Keyword(s):  
Process Model ◽  
Complex Adaptive System ◽  
Evaluation Methodology ◽  
Design Activity ◽  
Model Framework ◽  
Innovative Design ◽  
Adaptive Process ◽  
Complex Adaptive ◽  
Process Architecture ◽  
And Control

In this paper, we introduced an activity-based adaptive process model that views innovative design as a complex adaptive system. Instead of predefining the process architecture, we constructed the model framework by adaptively selecting the design activity by the activity value. We defined the activity value as the complexity reduction associated with the possibility of satisfying the design targets and design stages. Moreover, this paper contributes an expert evaluation methodology to evaluate the activity value in order to balance innovation and control. Finally, we applied the model to an industrial case and analyzed the simulation results.

scholarly journals The multilevel inverter with clamped-diode

2019 ◽  
Vol 14 (3) ◽  
pp. 1189
Author(s):  
Trong-Thang Nguyen
Keyword(s):  
Numerical Simulation ◽  
Circuit Design ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Control Circuit ◽  
Multilevel Inverter ◽  
Power Circuit ◽  
Advantages And Disadvantages ◽  
Multi Level ◽  
And Control

<p>In this study, the author analyzes the advantages and disadvantages of multi-level inverter compared to the traditional two-level inverter and then chose the suitable inverter. Specifically, the author analyzes and designs the three-level inverter, including the power circuit design and control circuit design. All designs are verified through the numerical simulation on Matlab. The results show that even though the three-level inverter has a low number of switches (only 12 switches), but the quality is very good: the total harmonic distortion is small; the output voltage always follows the reference voltage.</p>

scholarly journals Prevalence of and Factors Associated With Depressive Symptoms Among College Students in Wuhan, China During the Normalization Stage of COVID-19 Prevention and Control

2021 ◽  
Vol 12 ◽  
Author(s):  
Jincong Yu ◽  
Ziyun Yang ◽  
Yuqin Wu ◽  
Ming Ge ◽  
Xuemei Tang ◽  
...  
Keyword(s):  
College Students ◽  
Logistic Regression ◽  
Online Learning ◽  
Depressive Symptoms ◽  
Prevention And Control ◽  
Psychological Intervention ◽  
Binary Logistic Regression ◽  
Factors Associated ◽  
And Control ◽  
At Home

Objectives: The 2019 coronavirus disease (COVID-19) epidemic has led to persistent negative psychological effects on the general public, especially on college students, who are highly susceptible to psychological difficulties, such as fear, anxiety, and depression. Little information is known about depressive symptoms among college students during the normalization stage of COVID-19 prevention and control in China. This study aimed to understand the prevalence of and factors associated with depressive symptoms after a long quarantine time and online learning at home among college students in Wuhan, China.Materials and Methods: A web-based survey was conducted from July to August 2020 during the Chinese summer holiday to collect data on sociodemographic variables, depressive symptoms, and their potential associated factors using an electronic questionnaire among college students in Wuhan, China. The Patient Health Questionnaire-9 (PHQ-9) was used to measure depressive symptoms. Binary logistic regression was used to explore the factors associated with depressive symptoms.Results: A total of 9,383 college students were included in the analysis. The prevalence of depressive symptoms was 15.8% (1,486/9,383) among college students. The binary logistic regression showed that the experience of being quarantined for observation or treatment, family members or friends dying of COVID-19, rarely or never seeking help from others, fewer supportive relatives or friends, less support from family in the past month, a worse relationship with parents at home, a longer time spent daily on electronic devices except for online learning, and feeling anxious in the face of returning to school were independently associated with a higher risk of depressive symptoms. Academic stress and concern about the epidemic were the main reasons for their anxiety.Conclusions: Targeted psychological intervention measures are recommended for college students to improve their mental health during the normalization stage of COVID-19 prevention and control.

Intra-Personal Emotional Intelligence Among College Students in Vellore District of Tamil Nadu

2020 ◽  
pp. 81-90
Author(s):  
Dunstan Rajkumar A. ◽  
Ajay Kumar Sharma ◽  
A. Manikandan
Keyword(s):  
College Students ◽  
Emotional Intelligence ◽  
Intrinsic Motivation ◽  
Tamil Nadu ◽  
Understanding Emotions ◽  
Expression Of Emotions ◽  
And Control

The competency of individuals to distinguish their own emotions and those of others is known as emotional intelligence. It is the “ability of an individual to accomplish and control his or her emotions and own the capacity to control the emotions of others as well.” There are four branch models of enthusiastic insight that portrays capacities of different zones of emotional intelligence. First one being the perceiving emotions; it is the expression of emotions in a non-verbal reception; using emotions; use of emotions to facilitate thoughts; understanding emotions: where emotions convey information; managing emotions: emotions are managed and understood to convey information. This study focuses on the intrapersonal emotional intelligence which is the basis for interpersonal emotional intelligence. The aspects viz., understanding emotions, managing emotions, intrinsic motivation building, and zeal are studied. The study attempts to identify the factors of emotions present in the college students so as to help them to build an effective intrapersonal emotional intelligence.

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