scholarly journals Operational performance and losses in mechanized soybean harvesting as a function of field shape

2019 ◽  
Vol 10 (2) ◽  
pp. 308-318
Author(s):  
Carla Segatto Strini Paixão ◽  
André Ferreira Damasceno ◽  
Murilo Aparecido Voltarelli ◽  
Aline Spaggiari Alcântara ◽  
Rouverson Pereira da Silva
Keyword(s):  
Operational Performance ◽  
Statistical Control ◽  
Rectangular Section ◽  
Statistical Process ◽  
Managerial Efficiency ◽  
Different Shapes ◽  
And Performance ◽  
Cylinder Rotation ◽  
Speed Engine

Information on the capacity, operational efficiency, and performance of the harvester is very important in the management of agricultural mechanized systems, influencing decisions made with the aim of optimization. This study aimed to evaluate times, movements, and quality of mechanical soybean harvest operations in different shapes of the plots. Operational performance parameters of the harvester and variables representative of the agronomic aspects of the crop were used as indicators through statistical process control tools. Mechanized harvesting was carried out at a farm located in Uberaba, Minas Gerais, and the experimental design was completely randomized, with 18, 28, and 24 repetitions in irregular, rectangular, and trapezoidal fields, respectively. The activities of the harvester (harvest, unloading, handling, and climate charts) were monitored. The indicators of quality for harvester performance were: forward speed, engine and cylinder rotation and concave opening. The losses were determined: on the platform, internal mechanisms, total and in relation to productivity. The managerial efficiency and shunt time presented better results for the trapezoidal and rectangular section, respectively. All quality indicators evaluated were within the limits of statistical control, characterizing quality and reliability of the soybean harvesting operation.

QUALIDADE NA COLHEITA MECANIZADA DE MILHO SEMEADO EM DIFERENTES VELOCIDADES

2016 ◽  
Vol 15 (3) ◽  
pp. 582 ◽  
Author(s):  
ANTONIO TASSIO SANTANA ORMOND ◽  
MURILO APARECIDO VOLTARELLI ◽  
CARLA SEGATTO STRINI PAIXÃO ◽  
ALINE SPAGGIARI ALCÂNTARA1 ◽  
ELIZABETH HARUNA KAZAMA ◽  
...  
Keyword(s):  
Process Control ◽  
Statistical Process Control ◽  
Plant Density ◽  
Plant Population ◽  
Longitudinal Distribution ◽  
Statistical Control ◽  
Individual Values ◽  
Sowing Time ◽  
Statistical Process

RESUMO - As perdas na colheita podem estar relacionadas tanto a colhedora, como também a fatores ligados a cultura como: mau preparo do solo, densidade de plantas, inadequação da época de semeadura são alguns deles. O presente estudo objetivou determinar a influência da velocidade de semeadura no processo de colheita mecanizada de milho, por meio do controle de qualidade do processo. O experimento foi conduzido em Latossolo Vermelho, textura argilosa e relevo suave ondulado. O delineamento foi baseado na óptica do Controle Estatístico de ProcessoCEP, onde os dados foram coletados em pontos aleatórios em função do tempo. Os indicadores de qualidade avaliados foram divididos em parâmetros de semeadura (população de plantas e distribuição longitudinal de plântulas); e de colheita (Perdas de grãos e distribuição de palha) em função de seis velocidades de deslocamento (aproximadamente 2,0; 4,0; 6,0; 9,0; 10,0 e 12,0 Km.h-1). Os dados foram submetidos a análise descritiva para análise do comportamento. Como ferramentas do controle estatístico de processo utilizou-se, run charts ou gráfico sequencial e carta de controle de valores individuais para análise da qualidade do processo. A maior velocidade (V6) apresentou a maior variabilidade dos dados para todas as variáveis. A operação da colheita mecanizada de milho foi influenciada por fatores extrínsecos e intrínsecos a ela.Palavras-chave: Controle estatístico de processo, espaçamentos normais, perdas, população de plantas.QUALITY IN MECHANIZED HARVEST OF CORN SOWN IN DIFFERENT SPEEDSABSTRACT - The harvest losses may be associated to harvester as well as factors related to cultivation such as poor soil preparation, plant density, unsuitable sowing time. This study aimed to determine the effect of speed sowing in the mechanized harvest of corn, through the control of the quality of the process. The experiment was conducted in a clayey Oxisol and undulate relief. The design was based on the optics of the Statistical Process Control SPC, and the data were collected at random points in function of time. The quality indicators evaluated were divided into sowing parameters (plant population and longitudinal distribution of seedlings) and harvesting (loss of grain and straw distribution) in function of six displacement speeds (approximately 2.0, 4.0, 6.0, 9.0, 10.0 and 12.0 Km.h-1). The data were submitted to descriptive analysis for behavior analysis. As tools for the statistical control of the process, run charts or sequential graph were used, and control chart of individual values for analysis of the quality of the process. The highest speed (V6) showed the highest variability of the data for all variables. The operation of mechanized harvest of corn was influenced by extrinsic and intrinsic factors.Keywords: statistical process control, normal spacings, losses, plant population.

scholarly journals DESEMPENHO OPERACIONAL NA SEMEADURA DO MILHO SAFRINHA EM SISTEMA DE SEMEADURA DIRETA

2021 ◽  
Vol 36 (1) ◽  
pp. 1-9
Author(s):  
Márcia de Almeida Carneiro ◽  
Felipe Adolfo Litter ◽  
Francielle Morelli Ferreira ◽  
Franciele Morlin Carneiro ◽  
Leonardo Luiz Oss
Keyword(s):  
Climatic Factors ◽  
Field Capacity ◽  
Effective Field ◽  
Operational Performance ◽  
Mato Grosso ◽  
Different Shapes ◽  
Field Efficiency ◽  
E Mail ◽  
Direct Sowing

DESEMPENHO OPERACIONAL NA SEMEADURA DO MILHO SAFRINHA EM SISTEMA DE SEMEADURA DIRETA   MÁRCIA DE ALMEIDA CARNEIRO1, FELIPE ADOLFO LITTER1, FRANCIELLE MORELLI FERREIRA2,3,  FRANCIELE MORLIN CARNEIRO3, LEONARDO LUIZ OSS1   1Faculdade de Ciências Agrárias e Biológicas, Universidade do Estado de Mato Grosso, Campus Universitário de Alta Floresta (Av. Perimetral Rogério Silva, Norte-2, Cep 78580-000, Alta Floresta - MT, Brasil), e-mails: [email protected], [email protected] , [email protected] 2Faculdade de Ciências Sociais, Aplicadas e Agrárias, Universidade do Estado de Mato Grosso, Campus Universitário de Nova Mutum (Av. das Garças, N° 1192 N, Jd. das Orquídeas, Cep: 78450-000, Nova Mutum - MT, Brasil), e-mail: [email protected] 3Departamento de Engenharia Rural, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Via de Acesso Prof. Paulo Donato Castellane, s/n, Vila Industrial, Cep 14884-900, Jaboticabal - SP, Brasil), e-mail: [email protected] .   RESUMO: A semeadura do milho está sujeita a fatores que podem interferir na qualidade da operação, principalmente fatores climáticos que afetam diretamente a colheita da soja e consequentemente a semeadura do milho, portanto é necessário que ambas as operações sejam eficientes, garantindo o sucesso da produção agrícola. Diante ao exposto, objetivou-se avaliar o desempenho operacional na semeadura de milho safrinha na Fazenda Chopim em Novo Mundo – MT.  Foram realizadas avaliações em três dias de semeadura em talhões de formatos distintos, um com formato trapezoidal e outro com formato irregular, ambos com topografia levemente inclinada. Foram coletados os tempos produtivos, de interrupções e o de preparo, além da distância percorrida. Para a condução do ensaio foi utilizado um trator BH180, marca Valtra, ano 2008 e uma semeadora da Tatu Marchesan, modelo Ultra Flex, de 28 linhas. Foram avaliadas a capacidade de campo teórica, efetiva, operacional e a eficiência de campo. O desempenho operacional do conjunto da Fazenda Chopim apresentou média de capacidade de campo efetiva igual a capacidade de campo teórica (12 ha h-1). A semeadura na Fazenda Chopim foi considerada eficiente, pois apresentou valores médios (65,66 %) dentro dos valores considerados eficientes pela literatura (50-75%).   Palavras-chave: eficiência, mecanização, conjunto trator-semeadora.   OPERATIONAL PERFORMANCE IN THE CORN SOWING IN THE DIRECT SOWING SYSTEM   ABSTRACT: The corn sowing is subject to factors that may affect the quality of the operation, mainly climatic factors that directly affect the soybean harvest and consequently the corn sowing, so it is necessary that both operations are efficient, ensuring the success of agricultural production. Faced with the above, aimed to evaluate the operating performance in sowing winter corn in Fazenda Chopim in Novo Mundo – MT. Evaluations were conducted in three days of sowing in plots of different shapes, one with a trapezoidal shape and the other with irregular shape, both with slightly inclined topography. The productive, interruption and preparation times were collected, in addition to the distance covered. A BH180 tractor, Valtra, 2008 and a Tatu Marchesan seeder, Ultra Flex model, 28 rows, was used to conduct the test. Theoretical, effective, operational field capacity and field efficiency was evaluated. The operational performance of the Fazenda Chopim set showed an average effective field capacity equal to the theoretical field capacity (12 ha h-1). Sowing at Fazenda Chopim was considered efficient, as it presented average values (65.66%) within the values considered efficient by the literature (50-75%).   Keywords: efficiency, mechanization, tractor-Seeder Set.

Defining Quality of Perioperative Care by Statistical Process Control of Adverse Outcomes 

1995 ◽  
Vol 82 (5) ◽  
pp. 1181-1188 ◽  
Author(s):  
Robert S. Lagasse ◽  
Ellen S. Steinberg ◽  
Robert I. Katz ◽  
Albert J. Saubermann
Keyword(s):  
Peer Review ◽  
Perioperative Care ◽  
Control Charts ◽  
Statistical Control ◽  
Healthcare Organizations ◽  
Statistical Process ◽  
Human Errors ◽  
Clinical Indicators ◽  
System Errors

Background Through peer review, we separated the contributions of system error and human (anesthesiologist) error to adverse perioperative outcomes. In addition, we monitored the quality of our perioperative care by statistically defining a predictable rate of adverse outcome dependent on the system in which practice occurs and respondent to any special causes for variation. Methods Traditional methods of identifying human errors using peer review were expanded to allow identification of system errors in cases involving one or more of the anesthesia clinical indicators recommended in 1992 by the Joint Commission on Accreditation of Healthcare Organizations. Outcome data also were subjected to statistical process control analysis, an industrial method that uses control charts to monitor product quality and variation. Results Of 13,389 anesthetics, 110 involved one or more clinical indicators of the Joint Commission on Accreditation of Healthcare Organizations. Peer review revealed that 6 of 110 cases involved two separate errors. Of these 116 errors, 9 (7.8%) were human errors and 107 (92.2%) were system errors. Attribute control charts demonstrated all indicators, excepting one (fulminant pulmonary edema), to be in statistical control. Conclusions The major determinant of our patient care quality is the system through which services are delivered and not the individual anesthesia care provider. Outcome of anesthesia services and perioperative care is in statistical control and therefore stable. A stable system has a measurable, communicable capability that allows description and prediction of the quality of care we provide on a monthly basis.

scholarly journals An Experimental Evaluation of a Teaching Approach for Statistical Process Control in Computer Courses

2021 ◽  
Vol 17 (1) ◽  
pp. 154-171
Author(s):  
Julio Furtado ◽  
Sandro Ronaldo Bezerra Oliveira ◽  
Rafael Oliveira Chaves ◽  
Adeildo Telles ◽  
Adolfo Colares
Keyword(s):  
Bachelor's Degree ◽  
Teaching Approach ◽  
Operational Performance ◽  
Control Group ◽  
Learning Effectiveness ◽  
Statistical Control ◽  
Statistical Process ◽  
Degree Of Maturity ◽  
High Degree ◽  
Experimental Group

In organizations that are seeking a high degree of maturity, it is necessary to achieve a statistical control of software processes and to know their behavior and operational performance. The approach adopted for the research involves reading articles and experience performance reports, practical cases, discussion, the use of games and simulators, practical projects, and reflection by students on the knowledge learned and activities carried out. The evaluation was conducted with undergraduates enrolled in a Computer Science Bachelor's degree programme, who were divided into a control group and an experimental group. At the end, the two groups carried out a practical project to evaluate the learning effectiveness reached by the students. The results of the study suggest that there was a difference in the effectiveness of the learning resulting from the teaching approach and traditional instruction. The authors observed a mean gain of 30.06% in the experimental group, which is evidence of this rise in the learning effectiveness.

Statistical control charts as a support tool for the management of livestock production

2010 ◽  
Vol 149 (3) ◽  
pp. 369-384 ◽  
Author(s):  
K. MERTENS ◽  
E. DECUYPERE ◽  
J. DE BAERDEMAEKER ◽  
B. DE KETELAERE
Keyword(s):  
Control Charts ◽  
Integrated Approach ◽  
Statistical Characteristics ◽  
Statistical Control ◽  
Process Data ◽  
Livestock Farming ◽  
Statistical Process ◽  
Support Tool ◽  
And Performance ◽  
On Farm

SUMMARYThe concepts of control charts, an important tool in statistical process control, are commonly used for monitoring industrial production processes. In the context of precision livestock farming, their use has been demonstrated by many, although the statistical properties of livestock process data often do not comply with the basic assumptions of such control charts. The focus of the current review is on the most important aspects, recommendations, pitfalls and opportunities for the development and performance of control charts on livestock process data. An important hurdle to tackle is the statistical characteristics of the raw livestock process data which are mostly violating the control charts’ assumptions. An integrated approach, like synergistic control, appears to be promising in handling this issue. The availability of real-time on-farm validation of proposed systems will be crucial for lifting them from the potential level to direct practical relevance.

A Study on Influence of Shape of Aggregate on Strength and Quality of Concrete for Buildings and Pavements

2014 ◽  
Vol 941-944 ◽  
pp. 776-779 ◽  
Author(s):  
Kumar Molugaram ◽  
Jaya S. Shanker ◽  
Adepu Ramesh
Keyword(s):  
Flexural Strength ◽  
Vital Role ◽  
Hardened Concrete ◽  
Cement Concrete ◽  
Strength Tests ◽  
Hardened State ◽  
Different Shapes ◽  
And Performance ◽  
The Cost

Aggregate characteristics of shape, texture and grading influence on workability, finishability, bleeding, pumpability and segregation of fresh concrete and affects the strength, shrinkage, density, and durability of hardened concrete. About 80% of total volume of concrete consists of aggregate. Construction and durability problems have been reported due to poor mixture proportioning and variation on grading. Aggregate characteristics significantly affect the performance of Quality Concrete (QC) both in fresh and hardened state and have an impact on the cost effectiveness. Flaky and elongated particles lead to higher voids than cubical, rounded and well graded particles. The shape factor of aggregate plays a vital role in the design and performance of QC mix and it is mainly depends on the rock formation and type of crusher being used for crushing the aggregates. Flaky and elongated particles have larger specific surface area which results in higher demand of cement paste in cement concrete mix. These particles impede compaction or break during rolling and decrease the strength of the concrete structures. An attempt is made to study the effect of shape of aggregate on quality of the concrete used for the buildings and pavements. Initially an aggregate samples were collected from the stone crusher (two types) and prepared with different proportions of Flakiness and Elongation indices to conduct tests on properties of aggregates and compressive strength and flexural strength tests on concrete. The effect of different percentages from 0 to 50% of combined Flaky and Elongation Aggregates (CFEA) for quality concrete on the compressive and flexural strength of cement concrete is studied. The other properties of aggregate such as bulk density, impact value, water absorption have been studied for different shapes of aggregates. The cost analysis has been carried out with an optimum value of 30% CFEA in 1:3 proportions of flaky and elongated particles.

QUALIDADE NA COLHEITA MECANIZADA DE MILHO SEMEADO EM DIFERENTES VELOCIDADES

2017 ◽  
Vol 15 (3) ◽  
pp. 582
Author(s):  
ANTONIO TASSIO SANTANA ORMOND ◽  
MURILO APARECIDO VOLTARELLI ◽  
CARLA SEGATTO STRINI PAIXÃO ◽  
ALINE SPAGGIARI ALCÂNTARA1 ◽  
ELIZABETH HARUNA KAZAMA ◽  
...  
Keyword(s):  
Process Control ◽  
Statistical Process Control ◽  
Plant Density ◽  
Plant Population ◽  
Longitudinal Distribution ◽  
Statistical Control ◽  
Individual Values ◽  
Sowing Time ◽  
Statistical Process

RESUMO - As perdas na colheita podem estar relacionadas tanto a colhedora, como também a fatores ligados a culturacomo: mau preparo do solo, densidade de plantas, inadequação da época de semeadura são alguns deles. O presenteestudo objetivou determinar a influência da velocidade de semeadura no processo de colheita mecanizada de milho,por meio do controle de qualidade do processo. O experimento foi conduzido em Latossolo Vermelho, textura argilosae relevo suave ondulado. O delineamento foi baseado na óptica do Controle Estatístico de ProcessoCEP, onde os dadosforam coletados em pontos aleatórios em função do tempo. Os indicadores de qualidade avaliados foram divididos emparâmetros de semeadura (população de plantas e distribuição longitudinal de plântulas); e de colheita (Perdas de grãose distribuição de palha) em função de seis velocidades de deslocamento (aproximadamente 2,0; 4,0; 6,0; 9,0; 10,0 e12,0 Km.h-1). Os dados foram submetidos a análise descritiva para análise do comportamento. Como ferramentas docontrole estatístico de processo utilizou-se, run charts ou gráfico sequencial e carta de controle de valores individuaispara análise da qualidade do processo. A maior velocidade (V6) apresentou a maior variabilidade dos dados para todasas variáveis. A operação da colheita mecanizada de milho foi influenciada por fatores extrínsecos e intrínsecos a ela.Palavras-chave: Controle estatístico de processo, espaçamentos normais, perdas, população de plantas.QUALITY IN MECHANIZED HARVEST OF CORN SOWN IN DIFFERENT SPEEDSABSTRACT - The harvest losses may be associated to harvester as well as factors related to cultivation such as poorsoil preparation, plant density, unsuitable sowing time. This study aimed to determine the effect of speed sowing inthe mechanized harvest of corn, through the control of the quality of the process. The experiment was conductedin a clayey Oxisol and undulate relief. The design was based on the optics of the Statistical Process Control SPC,and the data were collected at random points in function of time. The quality indicators evaluated were divided intosowing parameters (plant population and longitudinal distribution of seedlings) and harvesting (loss of grain and strawdistribution) in function of six displacement speeds (approximately 2.0, 4.0, 6.0, 9.0, 10.0 and 12.0 Km.h-1). The datawere submitted to descriptive analysis for behavior analysis. As tools for the statistical control of the process, run chartsor sequential graph were used, and control chart of individual values for analysis of the quality of the process. Thehighest speed (V6) showed the highest variability of the data for all variables. The operation of mechanized harvest ofcorn was influenced by extrinsic and intrinsic factors.Keywords: statistical process control, normal spacings, losses, plant population.

scholarly journals A controlled process of corn sowing as a function of of seed dispensation and working speeds

2019 ◽  
pp. 1914-1919
Author(s):  
Antonio Tassio Santana Ormond ◽  
Elizabeth Haruna Kazama ◽  
Lucas Augusto da Silva Gírio ◽  
Franciele Morlin Carneiro ◽  
Murilo Aparecido Voltarelli ◽  
...  
Keyword(s):  
Statistical Design ◽  
Planting Density ◽  
Statistical Quality Control ◽  
Longitudinal Distribution ◽  
Statistical Control ◽  
Statistical Process ◽  
Sowing Depth ◽  
Displacement Speed ◽  
The Right

An appropriate sowing process is one of the steps that need immediate attention in crop sciences, because it may compromise the profitability of crops. An effective sowing process requires correctly spaced seedlings with the right depth in order to obtain an appropriate and uniform stand. In this context, statistical control is an option that allows evaluation of the agricultural process. Our objective in this study was to evaluate the quality of maize sowing as a function of planting density and working speeds. The statistical design used was based on the methodology of statistical quality control, corresponding to 4 seed dispensers from different manufacturers denoted DA, DB, DC, and DD with two speeds for each (V1 = 7.0 km h-1 and V2 = 11.5 km h-1). Data were collected from 10 replicates for each of the 4 seed dispensers, totaling 40 samples, at each working speed. The following parameters were evaluated: Sowing depth, longitudinal distribution of seedlings, initial and final plant population, and corn grain yield for the hybrid 30F35YH variety. The statistical process control offers an interesting and reliable mean of evaluating the quality of the sowing process. The seed dispenser, DC, exhibited a better quality of sowing as compared to others. The highest percentage of normal spacing was observed at the lower displacement speed for the seed dispensers, DB, DC, and DD. These seed dispensers also showed higher productivity as compared to other seed dispensers.

scholarly journals Physical and physiological quality of soybean seeds at three speeds of the harvester

2017 ◽  
Vol 21 (3) ◽  
pp. 214-218 ◽  
Author(s):  
Carla S. S. Paixão ◽  
Camila P. Chrispin ◽  
Rouverson P. da Silva ◽  
Lucas A. S. Girio ◽  
Murilo A. Voltarelli
Keyword(s):  
Electrical Conductivity ◽  
Statistical Process Control ◽  
Mechanical Damage ◽  
Soybean Seeds ◽  
Statistical Process ◽  
Physiological Quality ◽  
Displacement Speed ◽  
Cylinder Rotation ◽  
Temperature Water

ABSTRACT The mechanized harvesting of soybean is a fundamental tool in the production process of this crop and, if not performed properly, it can result in severe mechanical damage to the seeds, causing significant losses at harvest, particularly due to reduced quality. Thus, this study aimed to evaluate the physical and physiological quality of soybean seeds at three speeds of the harvester, using statistical process control. The experiment was carried out in the municipality of Conceição das Alagoas, MG, Brazil, with three travel speeds: 4.5, 5.0 and 5.5 km h-1. The seed samples were collected at 20 min intervals for 3 h of operation, with a total of 9 samples for each speed. The evaluations were performed based on the following parameters: grain temperature, water content, concave opening, cylinder rotation, mechanical damage and electrical conductivity. The physical and physiological quality of the seeds was dependent on the displacement speed of machine. The highest speed led to lower mechanical damage and higher vigor of soybean seeds.

LIGHTING AND PERFORMANCE: AN ANALYSIS ON LIGHTING EFFICIENCY OF ARCHITECTURE STUDIO

2019 ◽  
Vol 1 (1) ◽  
pp. 92
Author(s):  
Fazidah Hanim Husain
Keyword(s):  
Learning Environment ◽  
Comfort Level ◽  
Artificial Lighting ◽  
Level Measurement ◽  
Acceptable Range ◽  
Creative Learning ◽  
Illuminance Level ◽  
And Performance ◽  
Effect Of Light

Lighting is one of the key elements in any space and building infrastructure. Good design for an area in the building requires sufficient light that contributes to the efficiency of the activities. The correct method allows natural light to transmit, reduce heat and glare in providing a conducive learning environment. Light plays a significant influence to the quality of space and contributes focus of the students in an architecture studio. Previous research has shown that the effect of light also controlled emotions, behavior, and mood of the students. The operations of artificial lighting that have been used most of the time in an architecture studio during day and night may create lavishness and inadequacy at the same time. Therefore, this paper focuses on the identifying the quality of light for the architecture studio in UiTM (Perak), to instill a creative learning environment. Several methodologies adopted in this study such as illuminance level measurement using lux meter (LM-8100), and a questionnaire survey in gauging the lighting comfort level from students’ perspective. The study revealed that the illuminance level in the architecture studio is insufficient and not in the acceptable range stated in the Malaysian: Standards 1525:2007 and  not evenly distributed.  The study also concluded that the current studio environment is not condusive and appears monotonous. 

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