Tolerance constraint CNC tool path modeling for discretely parameterized trimmed surfaces

2014 ◽  
Vol 31 (4) ◽  
pp. 763-773 ◽  
Author(s):  
Subhajit Sarkar ◽  
Partha Pratim Dey
Keyword(s):  
Tool Path ◽  
Path Modeling ◽  
Trimmed Surfaces

Optimization Algorithm of Tool Radius Compensation in Fast Tool Servo Machining of Microlens Arrays

2014 ◽  
Vol 1039 ◽  
pp. 383-389 ◽  
Author(s):  
Huan Qi Ding ◽  
Shan Ming Luo ◽  
Xue Feng Chang ◽  
Dan Xie
Keyword(s):  
Tool Path ◽  
Single Point ◽  
Transitional Zone ◽  
Tool Path Generation ◽  
Machining Process ◽  
Path Generation ◽  
Fast Tool Servo ◽  
Path Modeling ◽  
Microlens Arrays ◽  
Radius Compensation

This paper analyzes the tool path generation of the microlens arrays by the single point diamond (FTS) turning,while focuses on the algorithm of tool radius compensation. Firstly, the mechanism of the fast tool servo machining process is introduced. Secondly, the tool path generation for FTS is calculated. The algorithm of tool radius compensation and the form error of the microlens is analyzed. Subsequently, the transitional zone is research, base on the algorithm of tool radius compensation, the optimized algorithm is proposed. Finally, using the optimized algorithm generate the tool path. Modeling of the tool path with the optimized algorithm of tool radius compensation is simulated with MATLAB. The simulation of the 3-D microlens arrays with the algorithm of tool radius compensation has done. According to the modeling of the simulation, algorithm of the radius compensation is discussed. The results show the optimized algorithm can improve the form accuracy of the microlens. The optimized algorithm is practical significant in the tool path generation.

EVALUASI PENERAPAN E-FAKTUR DENGAN MODEL KESUKSESAN SISTEM INFORMASI DELONE DAN MCLEAN (STUDI KASUS DI KPP PRATAMA METRO)

2019 ◽  
Vol 3 (2) ◽  
pp. 129
Author(s):  
Tosan Yanuar Rachmadi ◽  
Riya Dwi Handaka
Keyword(s):  
Least Squares ◽  
Partial Least Squares ◽  
Path Modeling

Penerapan e-Faktur di Indonesia dilaksanakan untuk memudahkan Pengusaha Kena Pajak dalam menerbitkan faktur pajak dengan memanfaatkan teknologi informasi. Namun dalam penerapan e-Faktur yang telah diwajibkan penggunaanya sejak pertengahan 2016 masih ditemukan berbagai kendala. Penelitian ini bertujuan untuk mengevaluasi penerapan e-Faktur dengan menggunakan model kesuksesan sistem informasi DeLone dan McLean dalam mengukur kualitas sistem, kualitas informasi, dan kualitas layanan terhadap kepuasan pengguna serta manfaat bersih. Penelitian ini merupakan penelitian kuntitatif dengan metode studi kasus dan menggunakan data primer yang diperoleh melalui kuesioner yang disebarkan kepada  Pengusaha Kena Pajak (PKP) terdaftar di Kantor Pelayanan Pajak Pratama Metro.Dari hasil penelitian dengan menggunakan partial least squares path modeling, didapatkan bahwa kualitas informasi dan kualitas layanan berpengaruh positif dan signifikan terhadap kepuasan pengguna. Sementara itu, kualitas sistem berpengaruh positif namun tidak signifikan terhadap kepuasan pengguna. Kemudian, kepuasan pengguna juga berpengaruh positif dan signifikan terhadap manfaat bersih yang diterima Pengusaha Kena Pajak. Hasil penelitian ini juga menunjukan bahwa kepuasan pengguna merupakan variabel intervening dalam hubungan antara kualitas informasi dan kualitas layanan terhadap manfaat bersih. Sementara itu kepuasan pengguna tidak dapat menjadi variabel intervening dalam hubungan antara kualitas sistem terhadap manfaat bersih.

DO REALLY EMOTIONAL QUOTIENT AND SPIRITUAL QUOTIENT AFFECT ON EMPLOYEE PERFORMANCE?

2017 ◽  
Vol 1 (1) ◽  
pp. 33-37
Author(s):  
Shofia Amin ◽  
Nany Mawaddah
Keyword(s):  
Emotional Intelligence ◽  
Statistical Analysis ◽  
Least Squares ◽  
Work Performance ◽  
Employee Performance ◽  
Spiritual Intelligence ◽  
Path Modeling ◽  
Emotional Quotient ◽  
High Level ◽  
Positive Effect

The main purpose of this study is to examine the effect of emotional quotient on work performance, and the effect of spiritual quotient on work performance at BPMPPT of Jambi City. Using 68 employees as respondent, the data were collected by distributing questionnaire and analyzed by using partial least squares path modeling (PLS-SEM). The results of the analysis show that overall emotional intelligence and spiritual intelligence employee BPMPPT Jambi city is at a high level of quotient. While employee performance BPMPPT Jambi city is at a level of performance was enough. The statistical analysis shows that partially and simultantly emotional quotient and spiritual quotient has significant and positive effect on employee performance. Keywords: Emotional Quotient, Spiritual Quotient, Performance

Corporate governance and business ethics: Evidence from a sample of Algerian corporations

2020 ◽  
Vol 4 (1) ◽  
pp. 15-29
Author(s):  
Nour El Houda Yahiaoui ◽  
Abdelmadjid Ezzine
Keyword(s):  
Corporate Governance ◽  
Business Ethics ◽  
Structural Model ◽  
Structural Equations ◽  
Path Modeling ◽  
Senior Managers ◽  
Corporate Scandals ◽  
Governance Systems ◽  
Sustainable Value ◽  
Governance Practices

Corporate governance systems are developed to govern corporations, build trust and create sustainable value for all stakeholders. Paradoxically, in spite of massive efforts in developing governance systems, corporate scandals are persisting. Different studies have strongly recommended business ethics as a solution to this paradox. Thus, this study explores if business ethics supports corporate governance practices in a sample of Algerian corporations. The study used a mixed methodology; qualitative: since this subject is poorly addressed in the Algerian context that requires an exploratory study. Quantitative by developing a structural model demonstrating the relationship between business ethics and corporate governance, Data for the study were collected by means of a questionnaire distributed on an anonymous basis to corporations’ senior managers in Sidi Bel Abbes district. Treatment of collected data is done using two types of analysis: the structural equations modeling approach by using the PLS Path approach (PLS Path Modeling) and linear regression. The study finds out that business ethics leads to better levels of corporate governance and supports its practices; and the reason is mainly due to an implicit involuntary commitment to laws as a minimum required level of compliance, and that the protection of stakeholders’ rights are the most important corporate governance’s dimension affected by business ethics.

scholarly journals Study of ultrasonic vibration–assisted thread turning of Inconel 718 superalloy

2019 ◽  
Vol 11 (10) ◽  
pp. 168781401988377
Author(s):  
Yu He ◽  
Zhongming Zhou ◽  
Ping Zou ◽  
Xiaogang Gao ◽  
Kornel F Ehmann
Keyword(s):  
Surface Quality ◽  
Ultrasonic Vibration ◽  
Inconel 718 ◽  
Gas Turbines ◽  
Tool Path ◽  
Machining Parameters ◽  
Thread Cutting ◽  
Workpiece Surface ◽  
Inconel 718 Superalloy ◽  
The Relationship

With excellent properties, high-temperature superalloys have become the main application materials for aircraft engines, gas turbines, and many other devices. However, superalloys are typically difficult to machine, especially for the thread cutting. In this article, an ultrasonic vibration–assisted turning system is proposed for thread cutting operations in superalloys. A theoretical analysis of ultrasonic vibration–assisted thread cutting is carried out. An ultrasonic vibration–assisted system was integrated into a standard lathe to demonstrate thread turning in Inconel 718 superalloy. The influence of ultrasonic vibration–assisted machining on workpiece surface quality, chip shape, and tool wear was analyzed. The relationship between machining parameters and ultrasonic vibration–assisted processing performance was also explored. By analyzing the motion relationship between tool path and workpiece surface, the reasons for improved workpiece surface quality by ultrasonic vibration–assisted machining were explained.

Skill-based Career Path Modeling and Recommendation

2020 ◽  
Author(s):  
Aritra Ghosh ◽  
Beverly Woolf ◽  
Shlomo Zilberstein ◽  
Andrew Lan
Keyword(s):  
Career Path ◽  
Path Modeling
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