Characteristic Analysis of Metal Trough Faces Cut by Pre-Mixed Abrasive Waterjet

2011 ◽  
Vol 63-64 ◽  
pp. 740-744
Author(s):  
Bai Sheng Nie ◽  
Ming Zhang ◽  
Jun Qing Meng ◽  
Hui Wang ◽  
Ru Ming Zhang
Keyword(s):  
Formation Mechanism ◽  
Sem Analysis ◽  
Abrasive Waterjet ◽  
Characteristic Analysis ◽  
Cutting Mechanism ◽  
Cutting Efficiency ◽  
Cutting Depth ◽  
Topographic Characteristics ◽  
Awj Cutting ◽  
The Relationship

In order to improve the cutting efficiency of abrasive waterjet (AWJ), the relationship between pre-mixed AWJ cutting depth and pressure was experimentally studied. Then, through analysis of the cutting results, the topographic characteristics and formation mechanism of the cut trough faces were investigated. Moreover, through comparing the effects of different jet pressures on the topographic characteristics of AWJ cut trough faces and the SEM analysis of the cut trough faces at different pressures and depths, the effects of pre-mixed AWJ cutting mechanism on the characteristics of cut trough faces were investigated, and the characteristics of the trough faces of metals cut by pre-mixed AWJ were analyzed.

Simulation and Study on the Formation Mechanism of Chip Based on Micro Cutting

2016 ◽  
Vol 679 ◽  
pp. 103-106 ◽  
Author(s):  
Qi Ding Li ◽  
Ke Tian Li ◽  
Hai Min Li
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Cutting Force ◽  
Formation Mechanism ◽  
Element Model ◽  
Cutting Mechanism ◽  
Cutting Depth ◽  
Micro Cutting ◽  
Model Based ◽  
Simulation Results

A finite element model based on Abaqus/Explicit is built. Micro cutting mechanism of Al7075 with different cutting depth is simulated and analyzed. The simulation results show that if the cutting depth is more than 10μm, the chip is a kind of continuous curl. If the cutting depth is less than 10μm, the chip is a kind of feathery squeeze debris. When the cutting depth is very small (3μm), the shape of chips is just like discontinuous wrinkle. By contrasting the simulation results of cutting force with its theoretical values, they have the same result. The model of the chip prediction could achieve ideal simulation results.

New Understandings of the Relationship and Initial Formation Mechanism for Pseudo-lignin, Humins, and Acid-Induced Hydrothermal Carbon

2018 ◽  
Vol 66 (45) ◽  
pp. 11981-11989 ◽  
Author(s):  
Banggui Cheng ◽  
Xiaohui Wang ◽  
Qixuan Lin ◽  
Xiao Zhang ◽  
Ling Meng ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Initial Formation ◽  
The Relationship

scholarly journals MEDIASI CUSTOMER SATISFACTION DAN INTELLECTUAL CAPITALATAS PENGARUH DIGITAL MARKETING TERHADAP KINERJA PERUSAHAAN

2020 ◽  
Vol 15 (2) ◽  
pp. 288-306
Author(s):  
Yuliati Yuliati
Keyword(s):  
Firm Performance ◽  
Customer Satisfaction ◽  
Intellectual Capital ◽  
Structural Equation ◽  
Sem Analysis ◽  
Digital Marketing ◽  
Equation Modeling ◽  
Internal Resources ◽  
Small Medium Enterprises ◽  
The Relationship

The aim of this study is to provide clarity of intellectual capital effects and customer satisfaction as a mediating variable in the relationship between digital marketing for firm performance. The study was conducted on Small Medium Enterprises (SMEs) in Kudus district by taking a sample of 134 SME managers such as owners and operational managers. Through structural equation modeling (SEM) analysis, it is discussed that the mediated hypothesized effect is statistically significant. In other words, intellectual capital and customer satisfaction can bridge the relationship of digital marketing variables to firm performance. This finding helps management in understanding the ability of internal resources to be able to utilize information technology to support the resources they have. Therefore, SMEs must pay attention to factors both internal and external, agreeing to understand the suitability of the firms in determining the most appropriate use of digital marketing.

scholarly journals WOM as The Mediator of Marketing Mix to Customer Satisfaction in Covid-19 Pandemic

2021 ◽  
Vol 14 (2) ◽  
pp. 147-157
Author(s):  
Novi Haryati ◽  
◽  
Rosita Widya Putri ◽  
Nisrina Qotrunnada ◽  
Yafi Alam Syah ◽  
...  
Keyword(s):  
Customer Satisfaction ◽  
Structural Equation ◽  
Word Of Mouth ◽  
Descriptive Analysis ◽  
Secondary Data ◽  
Marketing Mix ◽  
Sem Analysis ◽  
Primary Data ◽  
Mediating Role ◽  
The Relationship

This study examines coffee shops’ marketing mix and its impact on customer satisfaction and word of mouth (WOM). Also, analyzing customer satisfaction mediates the relationship between the marketing mix and word of mouth. This study used a quantitative approach with 100 sampling of coffee shop’s customers across Malang City. Primary data collection is done by distributing questioner containing several questions using a Likert scale to the respondents, while secondary data is obtained from literature studies. For analyzing the data, this study applied descriptive analysis and statistical analysis employed WarpPLS 7.0 software to perform the Partial Least Squares-Structural Equation Modelling (PLS-SEM) analysis. This study proves that marketing mix has a positive and significant effect on customer satisfaction, and the same relationship was found between the marketing mix and WOM. An important finding from this study is that customer satisfaction plays a mediating role between marketing mix and word of mouth.

scholarly journals The President’s Influence on the Formation of Lithuanian Foreign Policy: A Shift of the Power Center During Grybauskaitė’s Term

Politologija ◽  
2019 ◽  
Vol 94 (2) ◽  
pp. 8-55
Author(s):  
Tomas Janeliūnas
Keyword(s):  
Foreign Policy ◽  
Formation Mechanism ◽  
Policy Making ◽  
Policy Formation ◽  
Foreign Affairs ◽  
Power Center ◽  
And Behavior ◽  
The Relationship

This article raises the question of what role does the presidential institution hold in the Lithuanian foreign policy formation mechanism and how a particular actor (president) can change their powers in foreign policy without going beyond the functions formally defined in the Constitution. The period of President Grybauskaitė’s term and her efforts as an actor to define her role in shaping Lithuanian foreign policy are analyzed. This is assessed in the context of the activities and behavior of former Lithuanian presidents and in the context of relations with other institutions involved in foreign policy making – the Ministry of Foreign Affairs (MFA) and the Seimas in particular. This article analyzes the relationship between the actor (Grybauskaitė) and the already established structure of domestic foreign policy formation and the ability of the actor to change this structure. The analysis suggests that it is precisely because of the choices made by Grybauskaite during 2009–2019 that a relationship between the structures of foreign policy making in Lithuania has changed considerably, and that the center of power of foreign policy formation has shifted to the presidency.

Aerodynamic Characteristics Analysis of High-Speed Train on Cutting under Crosswinds

2013 ◽  
Vol 300-301 ◽  
pp. 62-67
Author(s):  
Kun Ye ◽  
Ren Xian Li
Keyword(s):  
High Speed ◽  
Three Dimensional ◽  
Aerodynamic Characteristics ◽  
High Speed Train ◽  
Aerodynamic Forces ◽  
Cutting Depth ◽  
Cutting Slope ◽  
Characteristics Analysis ◽  
Relationship Of ◽  
The Relationship

Cutting is an effective device to reduce crosswind loads acting on trains. The cutting depth, width and gradient of slope are important factors for design and construction of cutting. Based on numerical analysis methods of three-dimensional viscous incompressible aerodynamics equations, aerodynamic side forces and yawing moments acting on the high-speed train, with different depths and widths of cutting，are calculated and analyzed under crosswinds，meanwhile the relationship of the gradient of cutting slope and transverse aerodynamic forces acting on trains are also studied. Simulation results show that aerodynamic side forces and yawing moments acting on the train（the first, middle and rear train）decrease with the increase of cutting depth. The relationship between transverse forces (moments) coefficients acting on the three sections and the cutting depth basically is the three cubed relation. The bigger is cutting width，the worse is running stability of train. The relationship between yawing moments coefficients acting each body of the train and the cutting width approximately is the three cubed relation. The transverse Aerodynamic forces decreased gradually with the increase of the gradient of cutting slope, the relationship between yawing moments coefficients acting each body of the train and the gradient of cutting slope basically is the four cubed relation.

scholarly journals Search for the Profile of the Victim of Adolescent Dating Violence: An Intersection of Cognitive, Emotional, and Behavioral Variables

2020 ◽  
Vol 17 (21) ◽  
pp. 8004
Author(s):  
Isabel Cuadrado-Gordillo ◽  
Inmaculada Fernández-Antelo ◽  
Guadalupe Martín-Mora Parra
Keyword(s):  
Dating Violence ◽  
Emotional Abuse ◽  
Moral Disengagement ◽  
Sem Analysis ◽  
Benevolent Sexism ◽  
Gender Violence ◽  
Adolescent Dating Violence ◽  
Behavioral Variables ◽  
Definition Of ◽  
The Relationship

The knowledge of the promoting variables of dating violence has been a topic much studied in the last decade. However, the definition of the profile of this type of victim still presents numerous unknowns that hinder the effectiveness of prevention programs against violence. This study analyzes the interaction of cognitive, emotional and behavioral variables that converge in the victim profile. The sample comprised 2577 adolescents (55.2% girls) of 14 to 18 years in age (M = 15.9, SD = 1.2). The instruments used were the dating violence questionnaire (CUVINO), the scale of detection of sexism in adolescents (DSA), Mechanisms of Moral Disengagement Scale and Child and Adolescent Disposition Scale (CADS). To study the relationship between the different variables considered in this article, a SEM analysis was used. The results show that victims of gender violence and emotional abuse have high scores in benevolent sexism, moral disengagement and emotionally negative behavioral patterns. Likewise, the existence of an interdependent relationship between these three sets of variables was found.

scholarly journals Suspension Technology for Abrasive Waterjet (AWJ) Cutting of Ceramics

Procedia CIRP ◽  
2018 ◽  
Vol 77 ◽  
pp. 367-370 ◽  
Author(s):  
M. Putz ◽  
M. Dix ◽  
F. Morczinek ◽  
M. Dittrich
Keyword(s):  
Abrasive Waterjet ◽  
Awj Cutting

scholarly journals Association between platelet count and osteoarthritis in women older than 50 years

2020 ◽  
Vol 12 ◽  
pp. 1759720X2091286
Author(s):  
Yu-Jin Kwon ◽  
Il-Hyun Koh ◽  
Kwangho Chung ◽  
Yong-Jae Lee ◽  
Hyoung-Sik Kim
Keyword(s):  
Platelet Count ◽  
Confidence Intervals ◽  
Multiple Logistic Regression Analysis ◽  
Odds Ratios ◽  
Characteristic Analysis ◽  
Cross Sectional ◽  
Platelet Counts ◽  
Health And Nutrition ◽  
Inflammatory Processes ◽  
The Relationship

Background: Osteoarthritis (OA) is a multifactorial disease involving inflammatory processes. Platelets play important roles in both hemostasis and the inflammatory response; however, the relationship between platelet count and OA is unclear. Our aim was to evaluate the association between platelet count and knee and hip OA in Korean women. Methods: In this cross-sectional designed study, we included a total of 6011 women aged ⩾50 years from the 2010–2013 Korea National Health and Nutrition Examination Survey. Knee and hip OA were defined as Kellgren–Lawrence grade ⩾2 and presence of knee or hip pain, respectively. Platelet counts were divided into quartiles as follows: Q1, 150–212 (103/µl); Q2, 213–246 (103/µl); Q3, 247–283 (103/µl); and Q4, 284–450 (103/µl). Multiple logistic-regression analysis was conducted to calculate odds ratios and 95% confidence intervals. Receiver operating characteristic analysis was performed to determine the optimal platelet count cut-off with which to discriminate participants with knee and/hip OA versus those without OA. Results: Of the 6011 participants, 1141 (18.1%) had knee or hip OA. The mean age of participants without OA was 60.6 years, and that of participants with OA was 68.0 years. Compared with the lowest quartile, odds ratios (95% confidence intervals) for OA were 1.08 (0.84–1.39) for Q2, 0.94 (0.73–1.23) for Q3, and 1.35 (1.08–1.69) for Q4 after adjusting for confounders. The prevalence of OA was significantly higher with platelet counts ⩾288 × 103/µl, compared with platelet counts <288 × 103/µl. Conclusion: High platelet counts within the normal range are significantly associated with knee and hip OA.

scholarly journals Effects of Focus Geometry on the Hard Rock-Cutting Performance of an Abrasive Waterjet

2020 ◽  
Vol 2020 ◽  
pp. 1-13 ◽  
Author(s):  
Yohan Cha ◽  
Tae-Min Oh ◽  
Gye-Chun Cho
Keyword(s):  
Momentum Transfer ◽  
Hard Rock ◽  
Empirical Relationship ◽  
Abrasive Particle ◽  
Rock Cutting ◽  
Maximum Energy ◽  
Cutting Performance ◽  
Granitic Rocks ◽  
Abrasive Waterjet ◽  
Cutting Depth

Abrasive waterjets are being increasingly used in civil engineering for rock and concrete cutting, particularly for the demolition or repair of old structures. The energy of an abrasive waterjet is primarily provided by the accelerated abrasive. The momentum transfer during mixing and acceleration determines the abrasive velocity, which affects the cutting performance. Meanwhile, the geometry of the focus at which mixing occurs influences the momentum transfer efficiency. In this study, the effects of the focus geometry on the optimum abrasive flow rate (AFR) and momentum transfer characteristics in hard rock cutting were investigated. Experiments were conducted using granite specimens to test the AFR under different focus geometry conditions such as diameter and length. The results show that the focus geometry significantly affects the maximum cutting depth and optimum AFR. The maximum cutting energy was analyzed based on the cutting efficiency of a single abrasive particle. In addition, the momentum transfer parameter (MTP) was evaluated from the empirical relationship between the maximum energy and the cutting depth for granitic rocks. Accordingly, a model for estimating the MTP based on the AFR was developed. It is expected that the results of this study can be employed for the optimization of waterjet rock cutting.

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