scholarly journals Stinging Nettle (Urtica dioica L.) as an Aqueous Plant-Based Extract Fertilizer in Green Bean (Phaseolus vulgaris L.) Sustainable Agriculture

2021 ◽  
Vol 13 (7) ◽  
pp. 4042
Author(s):  
Branka Maričić ◽  
Sanja Radman ◽  
Marija Romić ◽  
Josipa Perković ◽  
Nikola Major ◽  
...  
Keyword(s):  
Organic Production ◽  
Green Bean ◽  
Mineral Fertilizers ◽  
Stinging Nettle ◽  
Short Term ◽  
Mineral Fertilization ◽  
Growing Seasons ◽  
And Control ◽  
Positive Effect

Plant-based fertilizers, such as liquid plant extracts, contribute to the cultivation of vegetables, particularly in organic production. The objective of this study was to determine if aqueous nettle extract could be successfully used as a fertilizer, applied on the soil and foliarly, in green bean production under field conditions. The hypothesis was that it could successfully replace mineral fertilizers and be integrated into sustainable and organic agriculture. The experiment was conducted at two climatically and pedologically different locations (Zadar and Poreč) throughout two growing seasons (spring and autumn). Two types of aqueous nettle extracts were used: a short-term extract (SE) was prepared by the extraction of wild stinging nettle (183 g 10 L−1 of water) in water for 24 h, while a long-term extract (LE) was prepared at the same ratio with water extraction for 14 days. Both extracts were diluted with water at a ratio of 1:3 (extract:water) before use. The SE was applied foliarly, and LE, by pouring it onto the soil. The abovementioned treatments were compared with mineral fertilization with urea (U) and control (no fertilization (C)). Foliar fertilization with SE proved to be almost as efficient as fertilization with LE, poured onto soil, showing a positive effect on green bean vegetative parameters. Furthermore, aqueous nettle extracts showed a positive effect on the iron accumulation in the leaves.

scholarly journals EcoRacer: Game-Based Optimal Electric Vehicle Design and Driver Control Using Human Players

2016 ◽  
Vol 138 (6) ◽  
Author(s):  
Yi Ren ◽  
Alparslan Emrah Bayrak ◽  
Panos Y. Papalambros
Keyword(s):  
Optimization Problem ◽  
Solution Space ◽  
Efficient Global Optimization ◽  
Vehicle Design ◽  
Control Problems ◽  
Short Term ◽  
Algorithm Efficiency ◽  
Np Complete ◽  
And Control

We compare the performance of human players against that of the efficient global optimization (EGO) algorithm for an NP-complete powertrain design and control problem. Specifically, we cast this optimization problem as an online competition and received 2391 game plays by 124 anonymous players during the first month from launch. We found that while only a small portion of human players can outperform the algorithm in the long term, players tend to formulate good heuristics early on that can be used to constrain the solution space. Such constraining of the search enhances algorithm efficiency, even for different game settings. These findings indicate that human-assisted computational searches are promising in solving comprehensible yet computationally hard optimal design and control problems, when human players can outperform the algorithm in a short term.

scholarly journals PENGARUH GLOBALISASI KEPADATAN PENDUDUK DAN PERTUMBUHAN EKONOMI TERHADAP DEGRADASI LINGKUNGAN DI INDONESIA

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Safriwan Safriwan ◽  
Idris Idris
Keyword(s):  
Population Density ◽  
Environmental Degradation ◽  
Research Result ◽  
Short Term ◽  
Method Error ◽  
Negative Effect ◽  
Economic Institute ◽  
Carbon Project ◽  
Positive Effect

Abstract : The study describes the effects on globalization population density andeconomic growth on environmental degradation in Indonesia. This research uses a timeseries data from year 1971 - 2017, with method Error Correction Model (ECM). Datasources from Global Carbon Project, KOF Swiss Economic Institute, and WorldBank. Research result explain that (1) Globalization in long term has a insignificantpositive effect on environmental degradation in Indonesia, but short term globalizationhas a insignificant negative effect on environmental degradation in Indonesia (2)Population density in long term has a significant positive , and short term has ainsignificant positive effect on environmental degradation in Indonesia (3) Economicgrowth in long and short term has a significant positive effect on environmentaldegradation in Indonesia.Keywords : Environmental Degradation, Globalization Population Density AndEconomic Growth.

scholarly journals Effect of the Sowing Method and Mineral Fertilizers on the Indicators of the Crop Yield Structure of Seed Alfalfa in the Ganja-Gazakh Zone of Azerbaijan

2021 ◽  
Vol 7 (7) ◽  
pp. 73-78
Author(s):  
P. Nabiyeva
Keyword(s):  
Crop Yield ◽  
Active Substance ◽  
Mineral Fertilizers ◽  
Mineral Fertilization ◽  
Yield Structure ◽  
Seed Crops ◽  
Positive Effect ◽  
Alfalfa Seeds

The article presents the results of research on the influence of the method of sowing and mineral fertilizers on the indicators of the structure of the yield of seed alfalfa in the Ganja-Gazakh zone of Azerbaijan. It has been established that the method of sowing and mineral fertilization has a positive effect on the indicators of the structure of the yield of seed alfalfa. For each method of sowing and mineral fertilization, alfalfa seeds had a positive effect on the indicators of the yield structure. To obtain irrigated gray-brown soils of high and stable yields of alfalfa seeds, it is necessary to form the density of the herbage of seed crops of 33.8–53.0 productive stems per 1 m of sowing methods 45 cm and the dose of mineral fertilizers N60P90K60 kg/ha active substance in the conditions of the Ganja-Gazakh zone Azerbaijan.

scholarly journals ORGANIC PRODUCTION IS THE BASIS OF HEALTH OF PEOPLE AND NATURE

2018 ◽  
Vol 2018 (7) ◽  
pp. 76-83
Author(s):  
Bogdan KUZNYAK ◽  
Keyword(s):  
Organic Farming ◽  
Plant Protection ◽  
Soil Layer ◽  
Organic Production ◽  
Organic Fertilizers ◽  
Mineral Fertilizers ◽  
Natural Fertility ◽  
Difficult Situation ◽  
Strategic Direction ◽  
And Control

The search of forms and methods of promoting the development of organic agriculture, consumption of organic products and its distribution through the long-term marketing concept is considered. Life expectancy in Ukraine in recent years has decreased by 10 years compared to European countries. The natural fertility of the land is gradually deteriorating due to excessive use of mineral fertilizers, pesticides, toxic chemicals and other negative factors. This led to destruction of the fertile soil layer and its most valuable component – humus, the content of which has decreased from 13-14% to 3-5% over the past 100 years. This significantly worsened the living conditions of soil microorganisms ensuring the activities of organic substances and nutrition of agricultural plants and reduced the quality of grown produce, which adversely affects the health of people and nature. The way out of this difficult situation is the transition to organic farming, which at the present stage is increasingly becoming a global strategic direction. The basic principles of organic farming are: (i) refusal to use mineral fertilizers and chemical means of plant protection (pesticides); (ii) use of organic fertilizers and siderates (“green fertilizers”, which fill the soil with organic mass and destroy weeds); (iii) surface cultivation of the soil (not more than 11 cm) sufficient for fluffing its upper layer, protection against weeds and microform balance; (iv) provision of scientifically sound crop rotation, which ensures fertility of the soil and control of weeds and pathogens.

scholarly journals Illegal markets, human trade and transnational organised crime

Temida ◽  
2003 ◽  
Vol 6 (4) ◽  
pp. 3-13 ◽  
Author(s):  
Vesna Nikolic-Ristanovic
Keyword(s):  
Human Trafficking ◽  
Organised Crime ◽  
Social Contexts ◽  
Short Term ◽  
Illegal Markets ◽  
The Balkans ◽  
Effective Strategies ◽  
Human Trade ◽  
And Control

In this paper the author explores, focusing largely on the example of the Balkans, the connection between the expansion of neoliberal market economy and war, and related to it the growth of illegal markets and the shadow economy, on one hand, and the victimisation by human trafficking, on the other. By locating human trade within expanding local and global illegal markets, the author is arguing that, without taking into consideration wider social contexts, which create structural incentives for illegal markets and transnational organised crime, we can hardly understand the causes, let alone build effective strategies to combat and prevent it. Consequently, on the basis of the analyses of human trade as a form of both transnational organised crime and illegal markets, some strategies (short-term and long-term) for the prevention and control of human trafficking on both the micro and macro level are suggested.

scholarly journals ANALISIS HARGA SAHAM INDEX KOMPAS 100 DENGAN PENDEKATAN ERROR CORRECTION MODEL

2021 ◽  
Vol 4 (1) ◽  
pp. 406-414
Author(s):  
Amir Hamzah
Keyword(s):  
Error Correction ◽  
Stock Prices ◽  
Stock Price ◽  
Stock Exchange ◽  
Financial Statements ◽  
Error Correction Model ◽  
Short Term ◽  
Correction Model ◽  
Positive Effect

The purpose of this research is to analyze the short term and long term relationship between ROI, EPS, PER ,inflation, SBI, exchange rate,and GDP on Stock Price. The data in this research is company financial statements which included Compas 100 Index on the Indonesia Stock Exchange. statistical analysis in this research used stasionarity test, The Classical Assumptions Test, Cointegration Test, Error Correction Model Test. This research found that partially ROI, EPS, PER variables a positive effect on stock prices in the short term and long term, KURS and SBI a positive effect on stock prices in the short term, but there is no effect in the long term, inflation and GDP do not affect the stock price both in the short term and long term. Simultaneously affected the stock prices significantly affect on stock price both in the short term and long term.

scholarly journals YIELD OF PERENNIAL GRASSES AND SOIL FERTILITY OF SOD-PODZOLIC SOIL IN CASE OF LONG-TERM APPLICATION OF MINERAL FERTILIZERS

2021 ◽  
Vol 250 ◽  
pp. 71-77
Author(s):  
A. Yu. Gavrilova ◽  
◽  
A. M. Konova ◽  
Keyword(s):  
Perennial Grasses ◽  
Mineral Fertilizers ◽  
Yield And Quality ◽  
Mobile Forms ◽  
Unit Dose ◽  
Phosphorus And Potassium ◽  
Higher Doses ◽  
Positive Effect

The article considers the effect of increasing doses and various combinations of mineral fertilizers applied to the cover crop on the yield and quality of a mixture of perennial grasses of two - years use, as well as the effect of fertilizers on the agrochemical parameters of sod-podzolic light loamy soil. The objects of the study were Stodolich meadow clover and Leningradskaya 204 meadow timothy grass. The studies were carried out in two crop rotations - with standard and reduced single doses of mineral fertilizers. The research results showed that in the years (VIII rotation) when the unit dose of fertilizers was increased to N20P20K25, the yield of perennial grasses was higher compared to the harvest in the VII rotation. The most appropriate dose in the VII rotation on perennial grasses of the 1st year was N30P30K45, on grasses of the 2nd year - doses of N30P30K45 and N40P40K60. In the VIII rotation, the highest yield of perennial grasses of the 1st year of use was obtained at a dose of N160P160K200 (8.4 t / ha), of grasses of the 2nd year of use at doses of N80P80K100 and N100P100K125 (6.5 t / ha). Positive effect of increasing doses of mineral fertilizers on the content of soil organic matter has been noted. On the contrary, the soil acidity increased from 4.7 to 4.3 units with an increase of mineral doses. Higher doses of fertilizers increased the content of mobile forms of phosphorus and potassium in the soil.

scholarly journals The Influence of the Knowledge-Based Network Structure Hole on Enterprise Innovation Performance: The Threshold Effect of R&D Investment Intensity

2020 ◽  
Vol 12 (15) ◽  
pp. 6155
Author(s):  
Jiajia Hao ◽  
Chunling Li ◽  
Runsen Yuan ◽  
Masood Ahmed ◽  
Muhammad Asif Khan ◽  
...  
Keyword(s):  
Network Structure ◽  
Positive Impact ◽  
Threshold Effect ◽  
Innovation Performance ◽  
Short Term ◽  
The Sustainable Development ◽  
Knowledge Based ◽  
D Investment ◽  
Positive Effect

The purpose of innovation is to consume fewer natural resources in order to create sustainable performance; therefore, innovation can ease the pressure of the ecological load and promote the sustainable development of the economy. Taking the 269 enterprises listed on the main board of the electronic information industry from 2010 to 2019 as samples, using the threshold panel data model, the nonlinear relationship between the knowledge-based network structure hole and the short-term and long-term innovation performance of the enterprises were studied, and the threshold effect of R&D investment intensity was discussed. When the R&D investment intensity is from 1.96% to 15.96%, the knowledge-based network structure hole has a significant positive impact on short-term innovation performance. When the R&D investment intensity is from 5.72% to 10.64%, the knowledge-based network structure hole has a significant positive effect on long-term innovation performance. Lower R&D investment intensity can make the knowledge-based network structure hole promote the increase of short term innovation performance, but to make the knowledge-based network structure hole have a positive impact on long term innovation performance, the R&D investment intensity should be increased by more than 5.72%. When R&D investment intensity is not higher than 15.96%, the knowledge-based network structure hole has a significant positive impact on short term innovation performance, but to make the knowledge-based network structure hole maintain the positive effect on long term innovation performance, R&D investment intensity should not exceed 10.64%. Therefore, enterprises should be guided to optimize the knowledge-based network structure according to the R&D investment intensity in order to improve the short term and long-term innovation performance of an enterprise. These research results can help enterprises to save resources and promote the sustainable development of the economy.

Control Strategy of Soluble Boron-Free Operation for a Small PWR

2017 ◽  
Author(s):  
Guangwen Bi ◽  
Chuntao Tang ◽  
Bo Yang
Keyword(s):  
Control Strategy ◽  
Power Distribution ◽  
Short Term ◽  
Control Rod ◽  
Burnable Poison ◽  
Power Operation ◽  
And Control ◽  
Power Distribution Control ◽  
Selection Of

Elimination of soluble boron will be a challenge to reactor operation for PWR. This paper is to promote a control strategy of soluble boron-free operation for a small PWR, through selection of burnable poison (BP), BP loading and control rod loading, based on the reactivity balance and manage requirement. The analysis for on-power operation and shutdown condition indicated that this strategy could be suitable for long-term and short-term reactivity and power distribution control for soluble boron-free operation.

The Need for Strategic Planning for Nuclear Power Plant I&C Upgrades

2002 ◽  
Author(s):  
J. Douglas Hill ◽  
Paul Moore
Keyword(s):  
Strategic Planning ◽  
Control Systems ◽  
Digital Technology ◽  
Nuclear Power ◽  
Power Plants ◽  
Short Term ◽  
Nuclear Plants ◽  
And Control ◽  
Plant Control

Nuclear power plants rely on Instrumentation and Control (I&C) systems for control, monitoring and protection of the plant. The original, analog designs used in most nuclear plants have become or soon will be obsolete, forcing plants to turn to digital technology. Many factors affect the design of replacement equipment, including long-term and short-term economics, regulatory issues, and the way the plant operates on a day-to-day basis. The first step to all modernization projects should involve strategic planning, to ensure that the overall long and short-term goals of the plant are met. Strategic planning starts with a thorough evaluation of the existing plant control systems, the available options, and the benefits and consequences of these options.

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