Growth and Quality of the Strawberry (Fragaria annanassa Dutch. cvs. ‘Sulhyang’) as affected by Complex Nutrient Solution Supplying Control System using Integrated Solar Irradiance and Substrate Moisture Contents in Hydroponics

The purpose of this research is to know the influence between the Quality of Human Resources, Utilization of Information Technology and Internal Control System Against Timeliness of Village Government Financial Reporting at Gunungkidul Regency. This research is causative research. The population is the village government in Gunungkidul Regency, especially in Gedangsari subdistrict. Criteria of respondents in the study were to village and village apparatus. We use questionnaire to collect data. We use multiple regression with SPSS program version 16.0 to analyze data. We find that quality of human resources and internal control system have a positive influence on the timeliness of village government financial reporting. On the other hand, utilization of information technology does not influence the timeliness of village government financial reporting. These imply that the quality of human resources and internal control system can speed up the preparation of village government financial reporting.

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DESIGN, SIMULATION AND IMPLEMENTATION MONITORING SYSTEM FOR SYSTEM CONTROL C4 FEEDING PUMP FOR FEED VAPORIZATION IN THE BUTADIENE PLANT

Proceedings of The Conference on Management and Engineering in Industry ◽

10.33555/cmei.v1i1.3 ◽

2020 ◽

Vol 1 (1) ◽

pp. 31-35

Author(s):

Fahmi Yunistyawan ◽

Yunistyawan J Berchmans ◽

Gembong Baskoro

Keyword(s):

Motor Control ◽

Control System ◽

Field Operator ◽

System Control ◽

Variable Speed ◽

Variable Speed Drive ◽

Software And Hardware ◽

Discharge Pressure ◽

Selection Of

This study implements the auto start control system on an electric motor 3 phase C4Feeding pump when the discharge pressure is low-low (4.3 kg /cm²). The C4 feeding pumpmotor was initially manually operated from the local control station, this was very ineffectiveand inefficient because it still relied on the field operator to operate the pump motor and whenthe plant was in normal operating it is very risk if the field operator late to operate motor then itwill impact to quality of the product, and if the delay time to operate motor is too long then planthave to shut down, therefore improvement is needed in the C4 feeding pump motor controlsystem. In this paper, various types of 3-phase motor control are explained which allow it to beapplied to the C4 feeding pump motor that are on-off, inverter, and variable speed drive andefficient selection of the three systems control of the motor. Software and hardware used in thisthesis work are DCS CENTUM VP Yokogawa.

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Silicon attenuates calcium deficiency by increasing ascorbic acid content, growth and quality of cabbage leaves

Scientific Reports ◽

10.1038/s41598-020-80934-6 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Dalila Lopes da Silva ◽

Renato de Mello Prado ◽

Luis Felipe Lata Tenesaca ◽

José Lucas Farias da Silva ◽

Ben-Hur Mattiuz

Keyword(s):

Ascorbic Acid ◽

Nutrient Solution ◽

Acid Content ◽

Dry Matter ◽

Ascorbic Acid Content ◽

Calcium Deficiency ◽

Ca Deficiency ◽

Leaf Water Loss ◽

Nutrient Solutions

AbstractCalcium (Ca) deficiency in cabbage plants induces oxidative damage, hampering growth and decreasing quality, however, it is hypothesized that silicon (Si) added to the nutrient solution may alleviate crop losses. Therefore, this study aims at evaluating whether silicon supplied in the nutrient solution reduces, in fact, the calcium deficiency effects on cabbage plants. In a greenhouse, cabbage plants were grown using nutrient solutions with Ca sufficiency and Ca deficiency (5 mM) without and with added silicon (2.5 mM), arranged as a 2 × 2 factorial in randomized blocks, with five replications. At 91 days after transplanting, the plants were harvested for biological evaluations. In the treatment without added Si, Ca deficiency promoted oxidative stress, low antioxidant content, decreased dry matter, and lower quality leaf. On the other hand, added Si attenuated Ca deficiency in cabbage by decreasing cell extravasation while increasing both ascorbic acid content and fresh and dry matter, providing firmer leaves due to diminished leaf water loss after harvesting. We highlighted the agronomic importance of Si added to the nutrient solution, especially in crops at risk of Ca deficiency.

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Results of Laboratory Studies of the Automated Sorting System for Root and Onion Crops

Agronomy ◽

10.3390/agronomy11061257 ◽

2021 ◽

Vol 11 (6) ◽

pp. 1257

Author(s):

Alexey Dorokhov ◽

Alexander Aksenov ◽

Alexey Sibirev ◽

Nikolay Sazonov ◽

Maxim Mosyakov ◽

...

Keyword(s):

Control System ◽

Automatic Control ◽

Automatic Control System ◽

Technological Parameters ◽

Post Harvest ◽

Manual Sorting ◽

Sorting System ◽

Working Bodies ◽

Automatic Removal

The roller and sieve machines most commonly used in Russia for the post-harvest processing of root and tuber crops and onions have a number of disadvantages, the main one being a decrease in the quality of sorting due to the contamination of working bodies, which increases the quantity of losses during sorting and storage. To obtain high-quality competitive production, it is necessary to combine a number of technological operations during the sorting process, such as dividing the material into classes and fractions by quality and size, as well as identifying and removing damaged products. In order to improve the quality of sorting of root tubers and onions by size, it is necessary to ensure the development of an automatic control system for operating and technological parameters, the use of which will eliminate manual sorting on bulkhead tables in post-harvest processing. To fulfill these conditions, the developed automatic control system must have the ability to identify the material on the sorting surface, taking into account external damage and ensuring the automatic removal of impurities. In this study, the highest sorting accuracy of tubers (of more than 91%) was achieved with a forward speed of 1.2 m/s for the conveyor of the sorting table, with damage to 2.2% of the tubers, which meets the agrotechnical requirements for post-harvest processing. This feature distinguishes the developed device from similar ones.

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Content of inorganic solutes in lettuce grown with brackish water in different hydroponic systems

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v21n3p150-155 ◽

2017 ◽

Vol 21 (3) ◽

pp. 150-155 ◽

Cited By ~ 9

Author(s):

Alide M. W. Cova ◽

Fabio T. O. de Freitas ◽

Paula C. Viana ◽

Maria R. S. Rafael ◽

André D. de Azevedo Neto ◽

...

Keyword(s):

Fresh Water ◽

Nutrient Solution ◽

Brackish Water ◽

Dry Matter ◽

Dry Matter Production ◽

Matter Production ◽

Water Plant ◽

Hydroponic Systems ◽

Inorganic Solutes

ABSTRACT The objective of this study was to evaluate the growth and accumulation of ions in lettuce grown in different hydroponic systems and recirculation frequencies. The experimental design was randomized blocks with 8 treatments and 4 replicates. The evaluated hydroponic systems were Nutrient Flow Technique (NFT) and an adapted Deep Flow Technique (DFT), the latter with recirculation frequencies of 0.25, 2 and 4 h. Both systems used fresh water and brackish water. Plant growth, accumulation of inorganic solutes (Na+, K+, Cl- and NO3-) and the correlation between dry matter production and Na+/K+ and Cl-/NO3- were evaluated. The salinity of the water used to prepare the nutrient solution caused decrease in growth and K+ and NO3- levels, and increased contents of Na+ and Cl- in the plants. When using fresh water the highest dry matter production was obtained in the NFT system. In case of brackish water the adapted DFT system increased the production, in relation to NFT system (at same recirculation frequency: 0.25 h). It was found that the choice of the type of hydroponic system and recirculation interval for the cultivation of lettuce depends on the quality of the water used to prepare the nutrient solution.

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Research of H∞ Robust Control for the Giant Die Forging Hydraulic Press’s Synchronous Control System under the Uncertainty Coefficient

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.190-191.819 ◽

2012 ◽

Vol 190-191 ◽

pp. 819-824 ◽

Cited By ~ 3

Author(s):

Ying Jian Deng ◽

Zhong Wei Liu

Keyword(s):

Control System ◽

Robust Control ◽

Control Algorithm ◽

Hydraulic Press ◽

National Defense ◽

Synchronous Control ◽

Performance Quality ◽

System Synchronization ◽

Uncertainty Coefficient

The giant hydraulic die press is our country national defense and the infrastructure essential equipment, the synchronous control system is the essential device to the giant forging hydraulic press, its synchronization control performance quality is good or bad will directly determine the quality of the product. This article through the proof of the theorem, gives the specific steps to achieve H∞ robust control algorithm. The simulation results show that: this control strategy has good inhibition to the change of system parameters, robustness is very strong, can well eliminate the system synchronization error.

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Design of Hydraulic Descaling Computer Control System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.608-609.19 ◽

2014 ◽

Vol 608-609 ◽

pp. 19-22

Author(s):

Ping Xu ◽

Jian Gang Yi

Keyword(s):

Control System ◽

Stability Problem ◽

Computer Control ◽

Control Methods ◽

Computer Control System ◽

Control Software ◽

Pressure Water ◽

Working Principle ◽

The Stability

Hydraulic descaling system is the key device to ensure the surface quality of billet. However, traditional control methods lead to the stability problem in hydraulic descaling system. To solve the problem, the construction of the hydraulic descaling computer control system is studied, the working principle of the system is analyzed, and the high pressure water bench of hydraulic descaling is designed. Based on it, the corresponding computer control software is developed. The application shows that the designed system is stable in practice, which is helpful for enterprise production.

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Effect Technology Information On Quality Financial Statement With Internal Control As Moderating Variable

International Journal of Educational Research & Social Sciences ◽

10.51601/ijersc.v2i1.42 ◽

2021 ◽

Vol 2 (1) ◽

pp. 9-13

Author(s):

Aris Eddy Sarwono ◽

Asih Handayani

Keyword(s):

Information Technology ◽

Control System ◽

Financial Reporting ◽

Internal Control ◽

Local Governments ◽

Sampling Technique ◽

Financial Statement ◽

Financial Reports ◽

Internal Control System

The problem with the low quality of financial reports in local governments is the reason this research was conducted. This research was conducted with the aim of analyzing the use of information technology on the quality of financial reports by considering the internal control system (SPI) factor. The location of this research is in the Karisidenan Surakarta area which includes 6 districts and 1 city. The population of this research is all state civil servants (ASN) in local governments who work in accounting. The sampling technique was using purposive sampling method. The results showed that the use of information technology had a positive effect on the quality of financial reporting in local governments, while the internal control system moderated the effect of the use of information technology on the quality of financial reporting in local governments.

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Faktor-Faktor Yang Mempengaruhi Fraud Dalam Kegiatan Pengadaan Barang dan Jasa

Jurnal Riset Akuntansi & Perpajakan (JRAP) ◽

10.35838/jrap.2017.004.02.22 ◽

2017 ◽

Vol 4 (02) ◽

pp. 274-293

Author(s):

Nur Hidayati ◽

J.M.V. Mulyadi

Keyword(s):

Control System ◽

Internal Control ◽

Hypothesis Test ◽

Jel Classification ◽

Test Reliability ◽

Coefficient Of Determination ◽

Purposive Sampling ◽

Internal Control System ◽

Procurement System

ABSTRACT The purpose of this study is to examine whether variables such as quality of goods/services procurement committee, income of goods/services procurement committee, procurement system and procurement system, procurement ethic of goods/services and internal control system have influence to fraud of goods/ services procurement in the ministry of health affairs agency. Population in this research is all auditor related in process of procurement of goods/services, while the object of research (sample) that is as much as 56 people. The technique of determining the sample using purposive sampling method. Data were tested using validity test, reliability test, multicolinearity test, heteroskedasticity test, multiple regression analysis, hypothesis test and coefficient of determination. The result of the research shows that the quality of procurement committee variables significantly and negatively affect the fraud of procurement of goods/services. The income of the procurement committee does not significantly affect the procurement of goods/services, procurement system and procedures have significant effect and negative to the goods/service procurement, ethics have significant effect and negative to the procurement of goods/services and internal control system significantly and negative to the fraud of procurement of goods/services. ABSTRAK Tujuan dari penelitian ini adalah untuk menguji apakah variabel seperti kualitas panitia pengadaan barang/jasa, penghasilan panitia pengadaan barang/jasa, sistem dan prosedur pengadaan barang/jasa, etika pengadaan barang/jasa, dan sistem pengendalian internal memiliki pengaruh terhadap fraud pengadaan barang/jasa di Lingkungan Instansi Kementerian Kesehatan RI. Populasi dalam penelitian ini adalah seluruh auditor yang terkait dalam proses pengadaan barang/jasa, sedangkan yang dijadikan objek penelitian (sampel) yaitu sebanyak 56 orang. Teknik penentuan sampel menggunakan metode purposive sampling. Data diuji menggunakan uji validitas, uji reliabilitas, uji multikolinearitas, uji heteroskedastisitas, analisis regresi berganda, uji hipotesis dan koefisien determinasi. Hasil penelitian menunjukkan bahwa variabel kualitas panitia pengadaan berpengaruh secara signifikan dan negatif terhadap fraud pengadaan barang/jasa. Penghasilan panitia pengadaan tidak berpengaruh secara signifikan terhadap terhadap fraud pengadaan barang/jasa, sistem dan prosedur pengadaan berpengaruh secara signifikan dan negatif terhadap fraud pengadaan barang/jasa, ketika berpengaruh secara signifikan dan negatif terhadap fraud pengadaan barang/jasa dan sistem pengendalian internal berpengaruh secara signifikan dan negatif terhadap fraud pengadaan barang/jasa. JEL Classification: M41, M42, H57

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Study of the Influence of Control System Parameters on the Quality of the Input Current of a Three-Phase Power Factor Corrector

Elektrichestvo ◽

10.24160/0013-5380-2021-2-29-35 ◽

2021 ◽

Vol 2 (2) ◽

pp. 29-35

Author(s):

Dmitry A. Sorokin ◽

◽

Sergey I. Volskiy ◽

Jaroslav Dragoun ◽

◽

...

Keyword(s):

Control System ◽

Power Factor ◽

Harmonic Distortion ◽

Total Harmonic Distortion ◽

Input Current ◽

System Operation ◽

Error Amplifier ◽

Three Phase ◽

Power Factor Corrector

The paper suggests a control system of a three-phase power factor corrector. The study of the control system operation is carried out and the expressions for calculating the permissible values of error amplifier factors are obtained. The influence of the error amplifier parameters on phase current quality is investigated. The dependence of total harmonic distortion input current on a combination of error amplifier parameters is obtained at a given value of power factor. The conditions under which the total harmonic distortion input current has the minimum value are found out. This article is of interest to power electronics engineers, who are aimed at developing a three-phase power factor corrector.

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