31 research outputs found
Unique method for structural synthesis of the machines planed with bars and dogs
The planar mechanisms with articulated bars and gears (which we will simply note
MeBaRd) are part of the general planar mechanics category. Although structural structural
studies have been carried out [7], the structural synthesis of bars and wheels can be approached
as a distinct problem. Some papers refer directly to a certain class of mechanisms, such as
planetary mechanisms [1], [2], others stop on subsystems with zero mobility, called structural
groups with toothed elements [6], [8]. In this paper, developing some ideas presented in [3],
[5], a general algorithm for unitary structural synthesis of MeBaRd was developed and
developed, having the input parameters: M - the degree of mobility and N - the number of
contours
Efficiency of a production line by application of the Kanban method
This paper aims to present the study on the implementation of the Kanban system
for the "bicycle wheel" benchmark in demand-side conditions. Due to variations in customer
orders, production on the "Wheels" line is inconsistent, with work volume being also variable.
In this way, dead times appear, production stagnating at some times, and in others being
overstretched. There is a problem of finding a method of leveling the production, which also
leads to a better performance of the Logistics department within the "Expedition" service.
The work was carried out following a study with data provided by SC MECHROM
INDUSTRY SRL, a member of the CAMPAGNOLO group, a bicycle manufacturing
company, exclusively for performance sport
Researches and studies regarding brazed aluminium alloys microstructure used in aeronautic industry
Brazing is applied to the merge of the pieces which are most required, tensile strength of the solder can reach high values. By brazing there can be assembled pieces of most metals and ferrous and nonferrous alloys, with high melting temperature. This paper presents an analysis of the microstructure of materials from a brazed merge of aluminum alloy L103 which is often used to produce pieces of aeronautical industry. Brazing material was performed using several technologies, and after examination of the microstructure of materials from the merge area it was established as optimal technology the technology which consist of pickling in Aloclene 100 solution with the deposition of filler material on both sides of the base material and the use of spectral acetylene and neutral flame.
Key words
Case study on measuring the level of stress in the academic environment in France
The study is a novelty because was elaborated on a group of students in the
academic environment in France. Following the documented steps, I have noticed that several
questionnaires have been used in order to identify stress levels in the academic environment.
The case study presented in this article consists in a questionnaire meant to identify stress
factors. There are several factors that are likely to cause stress: changes to routine, time
pressure, difficult tasks, too much homework’s, financial state, sleep schedule and physical
work conditions. I believe that stress management results could be visible if we can motivate
people to adjust their behavior and life styl
Contribution to the measurement of stress level post stress management training
The case study presented in this article consists in a questionnaire meant to detect
stress in employees after a stress management training session. The study is a novelty because
was elaborated on a group of employees after they learn one months about occupational stress
management. Over the time, many of the studies conducted in the field of stress focus on a
combination of the factors like this: reducting stress exposure and developing programes for
physical exercises - relaxation and meditation. It is very important to have information about
stress because it can change the perspective of life and the way in which we can see that a
situasion can be negative or positive one
Integral curses of the disc drama model with fundamental dynamic characteristics tt-ds
The paper deals with the dynamic response of mechanisms with standardized inertial
and mechanical characteristics. Moment or inertial mass is periodically variable with
displacement, and torque or mechanical force are periodically variable with displacement and
represented by linear, square or cubic functions in relation to speed. In this paper both the
inertial moment and the torque variation were used for the T-shift. For the variations of torque
torque versus speed, the straight-inclined DS was used. Comparable results charts are based on
computer programs
Impact on quality of production using 5S method
Efficient and quality work requires a clean environment, security and rigor. The
principle of 5S, namely Seiri, Seiton, Seiso, Seiketsu, Shitsuke, allows the construction of a
functional working environment, driven by simple, precise and efficient rules. The 5S is the
foundation on which progress is being made, the deployment of Lean-manufacturing means
and methods, being a lever of change management. At the same time, the 5S can be considered
as the basic rules of order, discipline, unmistakable preliminaries for a whole improvement
project
DESIGN AND DEVELOPMENT OF A MOBILE APPLICATION ANDROID FOR THE MEASUREMENT OF STRESS LEVEL
The case study presented in this article consists in a mobile aplication created on the
basis of the Cohen questionnaire meant to detect stress level. The study is a novelty because the
mobile app can be used on an undefined number of Android terminals. The test can be performed
several times by the same person, and the data can be used later for various reports due to the
authentication and in-app account creation feature.To design the application were used the follow
instruments: PhoneGap, HTML, CSS, JavaScript, PHP, server web, MYSQL and Adobe
photoshop.The application can be used in any medium that requires rapid detection of stress on
the Cohen test of a large number of respondents. Data obtained through the application can be
used to carry out research studies in universities, psychology offices, recruitment companies, and
so on
IMPLEMENTATION OF THE ANDROID SOURCE CODE FOR “COHEN QUESTIONNAIRE – TO IDENTIFY THE LEVEL OF STRESS”
This paper aims to present the study on the implementation of the source code for a
Cohen questionnaire meant to detect stress level. The importance of this study consists in a unique
mobile app for Cohen test. The results can be used for several research’s studies. We used
instruments such us HTML, CSS, JavaScript, PHP, server web and MYSQL to develop the
application for Android.The application is composed of 10 questions and at the end of test the
users we received some recommendations to reduce stress at work
Analysis and management of avariation to a fluvial transport vessel caused by collision
In general, the body of the ship is a welded metal structure made up of the shell and
bone. The paper aims is to analyze and present the solution for the collision damage to a river
transport vessel. The problem is treated as in the case of a typical failure of welded
constructions. In this regard, the fault will be described, after which the stages of the fault
remedy will be presented