Features of the stress state of screw piercing of especially thick-walled hollow billets for mechanical engineering

2021 ◽  
pp. 44-48
Author(s):  
N. M. Vavilkin ◽  
S. M. Kriskovich
Metallurgist ◽  
2017 ◽  
Vol 61 (3-4) ◽  
pp. 217-222 ◽  
Author(s):  
B. A. Romantsev ◽  
Yu. V. Gamin ◽  
A. V. Goncharuk ◽  
A. S. Aleshchenko

2015 ◽  
Vol 31 (1) ◽  
pp. 20-30 ◽  
Author(s):  
William S. Helton ◽  
Katharina Näswall

Conscious appraisals of stress, or stress states, are an important aspect of human performance. This article presents evidence supporting the validity and measurement characteristics of a short multidimensional self-report measure of stress state, the Short Stress State Questionnaire (SSSQ; Helton, 2004 ). The SSSQ measures task engagement, distress, and worry. A confirmatory factor analysis of the SSSQ using data pooled from multiple samples suggests the SSSQ does have a three factor structure and post-task changes are not due to changes in factor structure, but to mean level changes (state changes). In addition, the SSSQ demonstrates sensitivity to task stressors in line with hypotheses. Different task conditions elicited unique patterns of stress state on the three factors of the SSSQ in line with prior predictions. The 24-item SSSQ is a valid measure of stress state which may be useful to researchers interested in conscious appraisals of task-related stress.


2018 ◽  
Vol 2 (2) ◽  
pp. 14-23
Author(s):  
Mohd Aderi Che Noh ◽  
Normurni Mohamad ◽  
Adibah Hasanah Abd Halim ◽  
Absha Atiah Abu Bakar

This study aims to see the implementation of project based learning methods (PBL) implemented by lecturers in the Science, Technology and Engineering P&P processes in Islam as an effort to enhance students' understanding in the Fiqh Method. Respondents in this study were students of second semester, Diploma of Mechanical Engineering program, Department of Mechanical Engineering, Politeknik Banting. Observation and interview methods are used for data collection purposes. The data were analyzed descriptively and presented in narrative form. The findings show that PBL activity is a fun and enjoyable P&P activity for students. Abstrak Kajian  ini  bertujuan  untuk  melihat  perlaksanaan  kaedah  pembelajaran  berasaskan  projek  (PBL)  yang dilaksanakan  oleh  pensyarah  dalam  proses  P&P Sains,  Teknologi  dan  kejuruteraan  dalam  Islam  sebagai usaha  meningkatkan  kefahaman  pelajar  pelajar  dalam  tajuk  Kaedah Fiqh.  Responden  dalam  kajian  ini adalah   terdiri   daripada   pelajar   semester   dua   progran   Diploma   Kejuruteraan   Mekanikal,   Jabatan Kejuruteraan  Mekanikal,  Politeknik  Banting.  Kaedah  pemerhatian  dan  temu  bual  digunakan  bagi  tujuan pengutipan data. Data dianalisis secara deskriptif dan dipersembahkan dalam bentuk naratif. Dapatan kajian menunjukkan aktiviti PBL merupakan aktiviti P&P yang disukai dan menyeronokkan bagi para pelajar.


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