scholarly journals Determining the Effects of Nanonutrient Application in Cabbage (Brassica oleracea var. capitate L.) Using Spectrometry and Biomass Estimation with UAV

Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 81
Author(s):  
Izar Sinde-González ◽  
Josselyn Paola Gómez-López ◽  
Stalin Alejandro Tapia-Navarro ◽  
Erika Murgueitio ◽  
César Falconí ◽  
...  
Keyword(s):  
Brassica Oleracea ◽  
Vegetation Indices ◽  
Biomass Estimation ◽  
Monitoring And Control ◽  
Geospatial Technologies ◽  
Digital Format ◽  
Dry Biomass ◽  
And Control ◽  
The Relationship

Geospatial technologies are presented as an alternative for the monitoring and control of crops, as demonstrated through the analysis of spectral responses (SR) of each species. In this study, it was intended to determine the effects of the application of nanonutrients (Zn and Mn) in cabbage (Brassica oleracea var. capitate L.) by analyzing the relationship between the vegetation indices (VI) NDVI, GNDVI, NGRDI, RVI, GVI, CCI RARSa and the content of chlorophyll (CC), from two trials established in the field and in the greenhouse, together with the calculation of dry biomass production in the field through the use of digital models and its further validation. The results indicated that for greenhouse experiments no significant differences were found between the VIs in the implemented treatments, rather for their phenological states. Whereas in the field assays it was evidenced that there were significant differences between the VIs for the treatments, as well as for the phenological states. The SR issued in the field allowed the evaluation of the behavior of the crop due to the application of nanonutrients, which did not occur in the greenhouse, in the same way. The SR also enabled the spectral characterization of the crop in its phenological states in the two trials. All this information was stored in a digital format, which allowed the creation of a spectral library which was published on a web server. The validation of the dry biomass allowed, by statistical analysis, the efficiency of the method used for its estimation to be confirmed.

Management Information Systems in the Public Sector

2013 ◽  
pp. 157-173 ◽  
Author(s):  
Richard Heeks
Keyword(s):  
Information Systems ◽  
Public Sector ◽  
Management Information Systems ◽  
Monitoring And Control ◽  
Management Information ◽  
The Public ◽  
Public Sector Organizations ◽  
Monitoring And Control Systems ◽  
And Control ◽  
The Relationship

Management information systems (MIS) are fundamental for public sector organizations seeking to support the work of managers. Yet they are often ignored in the rush to focus on ‘sexier’ applications. This chapter aims to redress the balance by providing a detailed analysis of public sector MIS. It first locates MIS within the broader management monitoring and control systems that they support. Understanding the broader systems and the relationship to public sector inputs, processes, outputs and outcomes is essential to understanding MIS. The chapter details the different types of reports that MIS produce, and uses this as the basis for an MIS model and a description of the decision-making benefits that computerized MIS can bring. Finally, the chapter describes generic public sector MIS that address internal government transactions, public administration/ regulation, and public service delivery. Real-world examples of all types are provided from the U.S., England, Africa, and Asia. <BR>

scholarly journals Shareholding Patterns and its Impact on Firm Performance: A Contemporary Study of Indian NIFTY 50 Companies

2018 ◽  
Vol 7 (1) ◽  
pp. 31-41
Author(s):  
Raghu Katragadda ◽  
A. Sreeram
Keyword(s):  
Firm Performance ◽  
Empirical Study ◽  
Vital Role ◽  
Monitoring And Control ◽  
Book Value ◽  
Contemporary Study ◽  
And Control ◽  
The Impact ◽  
The Relationship

Ownership structure or the stakeholder structure of an organization often play significant role in operations decision, monitoring and control. This as a result possesses influences over process and hence performance. On the other hand, the role of stakeholders and respective conflict of interests can also be not ruled out. Under such circumstances, assessing the impact of organizational structure or stakeholder pattern and firm performance becomes inevitable to assess. In addition, the relationship between the investment pattern and respective conflicts of interests is inevitable to be examined. To ensure investment security corporate governance has played vital role that suggests assessing the inter-relationship between the stakeholder pattern and firm performance. With this motivation, in this paper an empirical study has been done to examine the impact of internal shareholding patterns on the associated firm’s performance. In this paper we have performed an empirical study where the aforementioned relationship has been examined for Indian listed NIFTY 50 companies for the duration of the financial year 2011 to 2016. Our empirical results provide evidence that insider shareholding is positively and significantly related to the firm performance as measured by market capitalization; market value by book value and Tobin’s Q.

Monitoring Nugget Size of Micro Resistance Spot Welding (Micro RSW) Using Electrode Displacement-Time Curve

2012 ◽  
Vol 463-464 ◽  
pp. 107-111 ◽  
Author(s):  
Kuang Hung Tseng ◽  
Ko Jui Chuang
Keyword(s):  
Displacement Sensor ◽  
Displacement Curve ◽  
Monitoring And Control ◽  
Time Curve ◽  
Steel Sheets ◽  
Electrode Force ◽  
Weld Current ◽  
Electrode Displacement ◽  
And Control ◽  
The Relationship

The objective of this work is to investigate the relationship between nugget development and electrode displacement curves during micro RSW of stainless steel sheets. A DC transistor type micro RSW machine equipped with a real-time monitoring system was employed for this study. A laser displacement sensor was used to detect the displacement signals in the movement of upper electrode. This research can provide references for monitoring and control micro RSW quality using maximum electrode displacement. The results showed that electrode displacement increased rapidly at the initial heating stage of welding, and then at a reducing rate under normal cooling stage. The maximum electrode displacement is proportional to the weld current and is inversely proportional to the electrode force. An electrode displacement curve is an ideal monitoring signal can reflect the formation and growth of a nugget during micro RSW.

scholarly journals A Methodology for the Multi-Point Characterization of Short-Term Temperature Fluctuations in Complex Microclimates Based on the European Standard EN 15757:2010: Application to the Archaeological Museum of L’Almoina (Valencia, Spain)

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7754
Author(s):  
Ignacio Díaz-Arellano ◽  
Manuel Zarzo ◽  
Fernando-Juan García-Diego ◽  
Angel Perles
Keyword(s):  
Seasonal Patterns ◽  
Monitoring And Control ◽  
European Standard ◽  
Preventive Conservation ◽  
Multiple Sensors ◽  
Data Loggers ◽  
Heritage Buildings ◽  
Single Sensor ◽  
And Control

The monitoring and control of thermo-hygrometric indoor conditions is necessary for an adequate preservation of cultural heritage. The European standard EN 15757:2010 specifies a procedure for determining if seasonal patterns of relative humidity (RH) and temperature are adequate for the long-term preservation of hygroscopic materials on display at museums, archives, libraries or heritage buildings. This procedure is based on the characterization of the seasonal patterns and the calculation of certain control limits, so that it is possible to assess whether certain changes in the microclimate can be harmful for the preventive conservation of artworks, which would lead to the implementation of corrective actions. In order to discuss the application of this standard, 27 autonomous data-loggers were located in different points at the Archaeological Museum of l’Almoina (Valencia). The HVAC system (heating, ventilation and air conditioning) at the museum tries to reach certain homogeneous environment, which becomes a challenge because parts of the ruins are covered by a skylight that produces a greenhouse effect in summer, resulting in severe thermo-hygrometric gradients. Based on the analysis of temperatures recorded during 16 months, the air conditions in this museum are discussed according to the standard EN 15757:2010, and some corrective measures are proposed to improve the conservation conditions. Although this standard is basically intended for data recorded from a single sensor, an alternative approach proposed in this work is to find zones inside the museum with a homogeneous microclimate and to discuss next the average values collected in each area. A methodology is presented to optimize the application of this standard in places with a complex microclimate like this case, when multiple sensors are located at different positions.

On-Board Characterization of Engine Dynamics for Health Monitoring and Control

2005 ◽  
Author(s):  
Onder Uluyol ◽  
Kyusung Kim ◽  
Charles Ball
Keyword(s):  
Feature Extraction ◽  
Health Monitoring ◽  
High Speed ◽  
Monitoring And Control ◽  
Mechanical Assembly ◽  
Time Data ◽  
Feature Extraction Method ◽  
Limited Bandwidth ◽  
And Control

This paper introduces a feature extraction method for characterization of gas turbine engine dynamics for the purpose of engine health monitoring as well as optimum control. For a vehicle health monitoring system that is comprehensive in its scope, and timely and accurate in its diagnosis, high fidelity engine models and a large amount of high-speed data both in steady-state as well as in transients are needed. However, limited computational resources available on-board, and the limited bandwidth capacity and the high cost of real-time data transmission place serious barriers in fulfilling that need. The approach presented in the paper seeks to overcome these barriers by separating the initial feature extraction stage of diagnostics algorithms from the modeling and trending stages. The first part which includes the detection of time instances that are critical to diagnosis and control is performed on board, while the latter is performed on a ground station. The approach is applied to the startup transient in a propulsion engine. A 50-fold reduction in data size is realized while achieving a highly accurate prognosis of hydro-mechanical assembly (HMA) failures.

The reactivity of natural organic matter to disinfection by-products formation and its relation to specific ultraviolet absorbance

2001 ◽  
Vol 43 (2) ◽  
pp. 9-16 ◽  
Author(s):  
M. Kitis ◽  
T. Karanfil ◽  
J. E. Kilduff ◽  
A. Wigton
Keyword(s):  
Natural Waters ◽  
Activated Carbons ◽  
Monitoring And Control ◽  
Practical Applications ◽  
Ultraviolet Absorbance ◽  
On Line ◽  
Alum Coagulation ◽  
And Control ◽  
The Relationship ◽  
By Products

Five natural waters with a broad range of DOC concentrations were fractionated using various coal- and wood-based granular activated carbons (GAC) and alum coagulation. Adsorption and alum coagulation fractionated NOM solutions by preferentially removing components having high specific ultraviolet absorbance (SUVA). UV absorbing fractions of NOM were found to be the major contributors to DBP formation. SUVA appears to be an accurate predictor of reactivity with chlorine in terms of DBP yield; however, it was also found that low-SUVA components of NOM have higher bromine incorporation. SUVA has promise as a parameter for on-line monitoring and control of DBP formation in practical applications; however, the effects of bromide concentration may also need to be considered. Understanding how reactivity is correlated to SUVA may allow utilities to optimize the degree of treatment required to comply with DBP regulations. The reactive components that require removal, and the degree of treatment necessary to accomplish this removal, may be directly obtained from the relationship between SUVA removal and the degree of treatment (e.g., alum dose).

scholarly journals Hematocrit levels and thrombotic events in patients with polycythemia vera: an analysis of Veterans Health Administration data

2019 ◽  
Vol 98 (11) ◽  
pp. 2533-2539
Author(s):  
Shreekant Parasuraman ◽  
Jingbo Yu ◽  
Dilan Paranagama ◽  
Sulena Shrestha ◽  
Li Wang ◽  
...  
Keyword(s):  
Polycythemia Vera ◽  
Cox Regression ◽  
Veterans Health Administration ◽  
Veterans Health ◽  
Health Administration ◽  
Monitoring And Control ◽  
The Difference ◽  
And Control ◽  
The Relationship

Abstract Patients with polycythemia vera (PV) have a high incidence of thrombotic events (TEs), contributing to a greater mortality risk than the general population. The relationship between hematocrit (HCT) levels and TE occurrence among patients with PV from the Veterans Health Administration (VHA) was evaluated to replicate findings of the CYTO-PV trial with a real-world patient population. This retrospective study used VHA medical record and claims data from the first claim with a PV diagnosis (index) until death, disenrollment, or end of study, collected between October 1, 2005, and September 30, 2012. Patients were aged ≥ 18 years at index, had ≥ 2 claims for PV (ICD-9-CM code, 238.4) ≥ 30 days apart during the identification period, continuous health plan enrollment from 12 months pre-index until end of study, and ≥ 3 HCT measurements per year during follow-up. This analysis focused on patients with no pre-index TE, and with all HCT values either < 45% or ≥ 45% during the follow-up period. The difference in TE risk between HCT groups was assessed using unadjusted Cox regression models based on time to first TE. Patients (N = 213) were mean (SD) age 68.9 (11.5) years, 98.6% male, and 61.5% white. TE rates for patients with HCT values < 45% versus ≥ 45% were 40.3% and 54.2%, respectively. Among patients with ≥ 1 HCT before TE, TE risk hazard ratio was 1.61 (95% CI, 1.03–2.51; P = 0.036). This analysis of the VHA population further supports effective monitoring and control of HCT levels < 45% to reduce TE risk in patients with PV.

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