DYNAMIC MODELING OF THE SUPPLY PROCESS AND LOAD DISTRIBUTION IN A CLEANING PRODUCTS FACTORY

2021 ◽  
Vol 7 (1) ◽  
pp. [12 p.]-[12 p.]
Author(s):  
LISAURA WALKIRIA RODRIGUEZ ALVARADO ◽  
MIGUEL ANGEL MARTINEZ GARCIA ◽  
JESUS LOYO QUIJADA ◽  
MARIANA HERNANDEZ GONZALEZ ◽  
JESUS VICENTE GONZALEZ SOSA ◽  
...  
Keyword(s):  
Load Distribution ◽  
Complete System ◽  
Production Plan ◽  
Production Program ◽  
Cleaning Products ◽  
Delay Times ◽  
Process System ◽  
Loading And Unloading ◽  
Production Requirement ◽  
The Times

Abstract In the present work a dynamic model is evaluated, the process of transfer of cleaning products in the expedition warehouse, the delay times present in the process and the adequacy of the flow of load and discharge with the rhythm of production. production of four different plants. This evaluation allows to determine the availability of the transport units according to the production requirement and to avoid the accumulation of the trips. As you can see, from the study of the times, 58.47% time is the product and 41.53% the time lost in the delays, on the other hand, it is considered feedback between the production plan and the process of transfer of finished product in the transport units, allows to determine in the complete system: production - loading and unloading of the stages of the process to hinder the continuous flow of the product and likewise to determine the real capacity of the transport units required. The main contribution of the present work is to determine by means of the simulation the percentage of compliance of the units of transport from the product requirement and analysis of the current capacity; this contributes to the decision making to implement improvement solutions, in this case, evaluated in two proposals: eliminate idle time and feed back the system for the availability of transport units with the requirement of the production program. Keywords: Process, system dynamics, production, delays, scenarios, improvement solutions, distribution

scholarly journals Perancangan E-Learning Berbasis Web Pada Universitas Katolik Santo Thomas

2021 ◽  
pp. 34-37
Author(s):  
Sorang Pakpahan ◽  
Painto Juna Putra
Keyword(s):  
Teaching And Learning ◽  
Learning System ◽  
Spiritual Intelligence ◽  
Digital Era ◽  
Process System ◽  
E Learning ◽  
Good Learning ◽  
The Times ◽  
To Receive

The e-learning system is absolutely necessary to anticipate the times with the support of information technology where everything is heading to the digital era, both mechanism and content. In its development, the system must be preceded by analyzing the needs of the user (user needs). In accordance with the systems and software engineering paradigm, the needs of these users are of the highest order, and are the basis for the creation and work of developers. This is all to prevent the failure of the implementation of the Wahono system, (2003). E-learning is one way to help realize the quality of good learning education. To find out how much the ability of students to receive lessons during tutoring. In addition, to unite intellectual and spiritual intelligence, it requires a good teaching and learning process system through a learning medium. By utilizing advances in technology, a tutoring information is built that can be accessed through a website.

scholarly journals Study regarding the improvement of the postage transport system in the city of Sibiu

2021 ◽  
Vol 343 ◽  
pp. 06002
Author(s):  
Liliana Georgeta Popescu ◽  
Ovidiu Ioan Moldovan
Keyword(s):  
Work Schedule ◽  
Restriction Factors ◽  
Post Offices ◽  
Distribution Point ◽  
Loading And Unloading ◽  
The Times ◽  
Microsoft Office ◽  
The City ◽  
Collection Point

This paper presents a study on the improvement of postal system in the city of Sibiu where there are a number of three post offices that serve a number of eight counters, to which are added the distribution point and the collection point. Each post office has a well-established work schedule that differs from one office to another. The transport of postal items between the counters / post offices within the municipality of Sibiu and the collection office, must be done on a certain route, in order to respect the work schedule of each office and to take into account a number of restriction factors. In order to streamline the process of collecting and distributing postal items in Sibiu, 6 routes have been proposed and studied for the two shifts of drivers. With the help of the GeoMedia software, various route variants were calculated in terms of distance in kilometers, fuel consummation and time traveled. With the help of a spreadsheet calculation performed in Microsoft Office Excel, it was possible to check and recalculate the proposed routes, by entering the times that drivers spend loading and unloading postal items from each counter. It was thus possible to create a calculation sheet that can improve postal transport in Sibiu, and can increase the quality of services.

A Launching Pattern in a Mixed Model Assembly Line

2014 ◽  
Vol 875-877 ◽  
pp. 1160-1164
Author(s):  
Suksan Prombanpong ◽  
S. Somboonsilp
Keyword(s):  
Cycle Time ◽  
Assembly Line ◽  
Mixed Model ◽  
Production Plan ◽  
Fixed Rate ◽  
Manual Assembly ◽  
Production Requirement ◽  
Mixed Model Assembly Line ◽  
Mixed Model Assembly ◽  
Production Demand

This paper aims to sequence the production plan of a condenser unit of an air-conditioned assembly line, which is a manual assembly line. In this case there are six different models with different required production rate that must be assembled simultaneously. The assembly line consists of twenty four workstations with thirty four workers. Due to the fact that the cycle time of each condenser model is varied. Thus, it is difficult to design a launching pattern so that the production requirement of each model is exactly met at each production hour. In turn, the production demand of some models can be satisfied while other models cannot be met. In order to solve this problem, the fixed rate launching algorithm is applied and the result is considered satisfactory.

scholarly journals Influence of the Municipal Solid Waste Collection System on the Time Spent at a Collection Point: A Case Study

2019 ◽  
Vol 11 (22) ◽  
pp. 6481 ◽  
Author(s):  
Mar Carlos ◽  
Antonio Gallardo ◽  
Natalia Edo-Alcón ◽  
Juan Ramón Abaso
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Collection ◽  
Traffic Lights ◽  
Collection Process ◽  
Loading And Unloading ◽  
The Times ◽  
Collection Point

Waste management plans pay attention to municipal solid waste (MSW) collection systems. It represents a significant portion of waste management as it involves a great economic cost and environmental impact. For these reasons, many researchers have studied the optimization of collection routes, analyzing factors that make them more efficient and sustainable, for example, the overall distance traveled and the time spent on the route. Collection times depend on factors such as the speed of the truck, time at traffic lights or time spent on loading and unloading the waste. The loading and unloading times play an important role in the measurement of the total time of the route. Moreover, there is scarce information in the literature about measuring the real-time spent on the trip. All those times are necessary to optimize the total route time. However, it is difficult to obtain this information directly as it depends on parameters such as the type of truck. The aim of this work is to propose a methodology to define all the times involved in the waste collection process. Once they are well defined, they have to be measured in some cases or calculated in others. This works also presents a case study to validate the proposed methodology with an extensive fieldwork to measure those times that can’t be calculated in the waste collection process. The work presents the results of a study of the time spent at a collection point in six MSW collection systems using different types of collection trucks and bin designs. We have determined how the characteristics of the system affect the time spent at a collection point. Additionally, the times for the six models have been established. Finally, we have determined the influence of the collection model in the duration of the activity. Under certain conditions, times can coincide even though the models are different.

scholarly journals Microtubule reassembly from nucleating fragments during the regrowth of amputated neurites.

1986 ◽  
Vol 103 (3) ◽  
pp. 917-927 ◽  
Author(s):  
P W Baas ◽  
S R Heidemann
Keyword(s):  
Electron Micrographs ◽  
Local Control ◽  
Cell Biol ◽  
Nucleation Sites ◽  
Incomplete Removal ◽  
Delay Times ◽  
The Times

We have proposed that stable microtubule (MT) fragments that resist depolymerization may serve as nucleating elements for the local control of MT dynamics in the axon (Heidemann, S. R., M. A. Hamborg, S. J. Thomas, B. Song, S. Lindley, and D. Chu, 1984, J. Cell Biol., 99:1289-1295). Here we report evidence that supports this proposal in studies on the role of MTs in the regrowth of neurites from the distal segments of amputated chick sensory neurites. Amputated neurites collapse to "beads" of axoplasm that rapidly regrow (Shaw, G., and D. Bray, 1977, Exp. Cell Res., 104:55-62). We examined both unarrested regrowth and regrowth after MT disassembly by either cold (-5 degrees C for 2 h) or nocodazole (0.1 microgram/ml for 15-20 min). In all these cases regrowth occurred at 3.5-4.5 micron/min with no delay times other than the times to reach 37 degrees C or rinse out the nocodazole. Electron micrographs of untreated beads show many MTs of varying lengths, while those of cold- and nocodazole-treated beads show markedly shorter MTs. The robust regrowth of neurites from beads containing only very short MTs argues against unfurling of intact MTs from the bead into the growing neurite. Electron micrographs of cold-treated beads lysed under conditions that cause substantial MT depolymerization in untreated intact neurites show persistent MT fragments similar to those in unlysed cold-treated beads. We interpret this as evidence that the MT fragments in cold-treated beads are somehow distinct from the majority of the MT mass that had depolymerized. Collapsed neurites treated with a higher dose of nocodazole (1.0 microgram/ml for 15-20 min) were completely devoid of MTs and regrew only after a 15-20 min delay in two cases but never regrew in 11 other cases. We found that MTs did not return in beads treated with 1.0 microgram/ml nocodazole even 30 min after removal of the drug. It was unlikely that the inability of these beads to reassemble MTs was due to incomplete removal of nocodazole in that a much higher dose (20 micrograms/ml nocodazole) could be quickly rinsed from intact neurites. Beads treated with 1.0 microgram/ml nocodazole could, however, be stimulated to reassemble MTs and regrow neurites by treatment with taxol. We conclude that the immediate, robust regrowth of neurites from collapsed beads of axoplasm requires MT nucleation sites to support MT reassembly.(ABSTRACT TRUNCATED AT 400 WORDS)

Research of the Optimal Production Planning Based on Multi-Group

2012 ◽  
Vol 263-266 ◽  
pp. 3490-3495
Author(s):  
Shu Di Wei ◽  
Hui Huang Zhao
Keyword(s):  
Production Planning ◽  
Production Plan ◽  
Linear Programming Method ◽  
Optimal Production ◽  
Production Program ◽  
Maximum Profit ◽  
Optimal Population ◽  
Definition Of ◽  
The Cost ◽  
Population Program

In the case of limited resources, we do not only need to think how to develop a production plan to best meet the needs of different groups, but we also gain maximum profits. That means how to make the decision for the actual production. According to the cost of production planning, the resource producer can gain maximum profit. Based on a thorough research in this issue, we state a formal definition of the multi-group multi-program multi-attribute problems, propose the optimal population program decisions with Topsis, and use a linear programming method to develop the optimal production program .The experiment results validate that the method is feasible.

scholarly journals Mechanisms of formation and implementation of operational strategies in the agricultural enterprises activities

2019 ◽  
pp. 43-48
Author(s):  
A. V. Gavrilenko
Keyword(s):  
Strategic Management ◽  
Production Planning ◽  
Competitive Strategy ◽  
Production Plan ◽  
Program Optimization ◽  
Competitive Reaction ◽  
Mathematical Methods ◽  
Operational Strategies ◽  
Production Program ◽  
Operational Activity

Introduction. The volatility of the market environment requires agrarian enterprises to change existing ap-proaches to management. Increasing the competitiveness of such enterprises is possible through the development and implementation of appropriate strategies. Particular attention should be paid to marketing activities. The enterprise's operational strategy must be based on an effective production plan. The purpose of the article is to create mechanisms for generating and implementing operational strategies of ag-ricultural enterprises. Results. The importance of a comprehensive approach to the production plan formation of agrarian enterprise is substantiated in unstable economic conditions. There is no correlation between the strategic approaches evaluation and mathematical methods. Approaches to production planning in the process of agrarian enterprise activity are generalized. The objective functions of linear and nonlinear mathematical programming for operational management evaluation are determined. The importance of competitive strategy of agrarian enterprise for maintaining its position in the market has been noted. The factors of a competitive strategy formation of agrarian enterprise are given. The algorithm of strategies modeling of agrarian organization operational activity is developed. The stages of the strategic management system of agrarian enterprise operational activity have been presented and characterized. Alternatives to the production program optimization are offered. The methods of production planning in different market structures are systematized. Conclusions. The proposed algorithm design strategies for agrarian enterprise operational activity facilitate reasonable choice of strategy considering market conditions. Taking into account the specifics of consumer demand for-mation and factors of competitive reaction in the market will allow to determine the optimal ratio of prices and volumes of products. This will help coordinate local plans and optimize revenue. Keywords: operating strategy, strategic management, agrarian enterprise, economic activity, results of activity, production plan, marketing activity.

The ignition of clouds of particles in shock-heated oxygen

1967 ◽  
Vol 300 (1460) ◽  
pp. 62-77 ◽  
Keyword(s):  
Radiant Heat ◽  
Volatile Matter ◽  
Radiant Heat Transfer ◽  
Ignition Process ◽  
Particle Ignition ◽  
Ignition Delay Times ◽  
Complex Process ◽  
Coal Particles ◽  
Delay Times ◽  
The Times

The ignition of clouds of coal particles in shock-heated oxygen has been studied. The requisite gas temperatures and pressures for ignition have been measured and have been related to particle ignition temperatures which are dependent on the volatile content of the coal and are in close agreement with the temperatures at which the particles lose volatile matter at an appreciable rate. Ignition delay times for various coals of different size ranges have been measured at oxygen pressures of 1.5 to 30 atm and temperatures of 700 to 1600°K. The experimental results indicate that the influence on the delays of the radiant heat transfer from a previously established flame at the shock-reflecting face is small. Some evidence that ignition is a surface catalysed process is presented. A mechanism for the ignition process is proposed. This relates the ignition delays with the times required to heat the particles solely by conduction to the appropriate particle ignition temperature. This theory is shown to describe the experimental delays satisfactorily. In testing it, similar experiments on completely volatile particles (anthracene) and non-volatile particles (graphite) have been carried out. Ignition of anthracene occurs when the particles approach their boiling point. Ignition of small graphite particles is a more complex process in which the first stage is the heating of the particles by conduction to a temperature just below that of the shock-heated gas. This is followed by a period in which heating due to chemical reaction overtakes heating by conduction.

The Eclipsing Binary WX Eridani

1979 ◽  
Vol 46 ◽  
pp. 385
Author(s):  
M.B.K. Sarma ◽  
K.D. Abhankar
Keyword(s):  
Light Curve ◽  
Spectral Type ◽  
Orbital Period ◽  
Primary Component ◽  
Light Curves ◽  
Absorption Feature ◽  
Primary Star ◽  
Eclipsing Binary ◽  
The Times ◽  
Phase Angles

AbstractThe Algol-type eclipsing binary WX Eridani was observed on 21 nights on the 48-inch telescope of the Japal-Rangapur Observatory during 1973-75 in B and V colours. An improved period of P = 0.82327038 days was obtained from the analysis of the times of five primary minima. An absorption feature between phase angles 50-80, 100-130, 230-260 and 280-310 was present in the light curves. The analysis of the light curves indicated the eclipses to be grazing with primary to be transit and secondary, an occultation. Elements derived from the solution of the light curve using Russel-Merrill method are given. From comparison of the fractional radii with Roche lobes, it is concluded that none of the components have filled their respective lobes but the primary star seems to be evolving. The spectral type of the primary component was estimated to be F3 and is found to be pulsating with two periods equal to one-fifth and one-sixth of the orbital period.

Ultraviolet Absorption of Refractory Elements by a Dual Laser Plasma Method

1988 ◽  
Vol 102 ◽  
pp. 243-246
Author(s):  
J.T. Costello ◽  
W.G. Lynam ◽  
P.K. Carroll
Keyword(s):  
Absorption Spectra ◽  
Laser Plasma ◽  
Optical Pulse ◽  
Ionic Species ◽  
Neutral Species ◽  
Plasma Method ◽  
Plasma Technique ◽  
Refractory Elements ◽  
Delay Times ◽  
Dual Laser

AbstractThe dual laser-produced plasma technique for the study of ionic absorption spectra has been developed by the use of two Q-switched ruby lasers to enable independent generation of the absorbing and back-lighting plasmas. Optical pulse handling is used in the coupling cicuits to enable reproducible pulse delays from 250 nsec. to 10 msec, to be achieved. At delay times > 700 nsec. spectra of essentially pure neutral species are observed. The technique is valuable, not only for obtaining the neutral spectra of highly refractory and/or corrosive materials but also for studying behaviour of ionic species as a function of time. Typical spectra are shown in Fig. 1.

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