scholarly journals Using Markov Chains to Predict Productivity of Maize in Iraq for the Period (2019-2025)

2021 ◽  
Vol 8 (5) ◽  
pp. 1
Author(s):  
L.A.F. Al-Ani ◽  
A.D.K. Alhiyali
Keyword(s):  
Markov Chains ◽  
Historical Data ◽  
Unit Area ◽  
Recent Past ◽  
Predictive Values ◽  
The Third ◽  
Predictive Methods ◽  
Horizontal Expansion ◽  
Predicted Values ◽  
The Impact

The research aims to predict the productivity of one of the most important major crops in Iraq, which is Maize, using Markov chains, which is one of the most important predictive methods that depend on relatively recent historical data and based mainly on previous data that is not far away. This is the advantage that Markov chains have, as relying on somewhat old historical data may negatively affect the predicted values. The results of the research showed the superiority of the third state to predict the productivity of Maize depending on the availability of Markov chains prediction conditions for this state. The results of the research also showed the continued decline in productivity for the coming years, as well as the impact of the predictive values on changes in the cultivated area more than changes in production, which confirms the existence of horizontal expansion at the expense of vertical expansion, that is, there is no intensification of production per unit area. The research also found that the actual values of productivity have approached the estimated values of the following years, and the matter applies to the convergence of these results for the subsequent years with the previous years, which confirms the accuracy of the method of Markov chains, in other words that what happened in the recent past had a clear impact in the future near.

Application of Prediction Algorithm of Photovoltaic Power in Distributed Photovoltaic Volatility Control

2013 ◽  
Vol 724-725 ◽  
pp. 22-26
Author(s):  
Hong Xia Xiao ◽  
Hong Chen ◽  
Hua Mo
Keyword(s):  
Historical Data ◽  
Prediction Algorithm ◽  
Storage Device ◽  
Support Vector ◽  
Output Volatility ◽  
Pv System ◽  
Predictive Values ◽  
Non Linear ◽  
Predicted Values ◽  
Theoretical Analyses

For the uncertain characteristics of output power of distributed Photovoltaic (PV), the energy storage device is used to make up the error, between the predicted output and the actual output, to achieve the volatility control of PV power system. This paper presents that the application of support vector machine (SVM) in the power output forecasting of PV volatility control. Based on the complex and non-linear of the factor affecting the PV output, it points the non-linear relationship between the influencing factors and predicted values, and it establishes the SVM regression model of the PV system. Meanwhile, combined with the historical data of the PV operation, it gives the predictive values. Both theoretical analyses and calculation examples show that this method is simple, with high precision, and it is more suitable to the PV output volatility control.

scholarly journals DAMPAK REDENOMINASI TERHADAP INFLASI INDONESIA: PENANGANAN MISSING MENGGUNAKAN METODE CASE DELETION, PMM, RF DAN BAYESIAN

2019 ◽  
Vol 3 (3) ◽  
pp. 272-286
Author(s):  
Windri Wucika Bemi ◽  
Rani Nooraeni
Keyword(s):  
Economic Growth ◽  
Classification Accuracy ◽  
Historical Data ◽  
Negative Impact ◽  
Economic Factors ◽  
Macroeconomic Variables ◽  
Case Deletion ◽  
The Third ◽  
Bayesian Linear Regression ◽  
The Impact

Indonesia is the country with the third largest currency digit after Vietnam and Zimbabwe. In 2010, Indonesia conveyed a discourse on the application of rupiah redenomination, but in its implementation it was necessary to estimate the economic factors that would be affected, especially inflation, where inflation was one of the decisive indicators of the success of the redenomination policy of the currency. To estimate the impact of redenomination on inflation, Indonesia can reflect on the historical data of countries that have implemented the policy. Based on historical data, a model can be applied to Indonesia. Historical data includes macroeconomic variables and forms of government. To get a model with better precision, complete data needs to be considered. The historical missing will make the inferencing obtained invalid and important information that can be used for analysis also diminishes. The case deletion method, mean matching predictive, random forest, and bayesian linear regression can be used to handle it. The results showed that there were 38.18% missing data from total observations and the case deletion method as the best method. Then the condition of hyperinflation, economic growth, and the index of government forms significantly impacted inflation after the implementation of redenomination. So, if Indonesia applies redenomination between the period 2010-2017, with the classification accuracy of 64.71%, it is estimated that it will have a negative impact because the inflation will increase after redenomination is implemented.

Social and political dimension of stigmatization: The development of Natasha and Maria images for immigrants in Istanbul

2016 ◽  
Vol 13 (1) ◽  
pp. 159-168
Author(s):  
Bayram Unal
Keyword(s):  
Public Perception ◽  
Daily Life ◽  
Legal Framework ◽  
State Law ◽  
Migrant Women ◽  
Political Dimension ◽  
Security Forces ◽  
Official Discourse ◽  
The Third ◽  
The Impact

This study aims at understanding how the perceptions about migrants have been created and transferred into daily life as a stigmatization by means of public perception, media and state law implementations.  The focus would be briefly what kind of consequences these perceptions and stigmatization might lead. First section will examine the background of migration to Turkey briefly and make a summary of migration towards Turkey by 90s. Second section will briefly evaluate the preferential legal framework, which constitutes the base for official discourse differentiating the migrants and implementations of security forces that can be described as discriminatory. The third section deals with the impact of perceptions influential in both formation and reproduction of inclusive and exclusive practices towards migrant women. Additionally, impact of public perception in classifying the migrants and migratory processes would be dealt in this section.

Economic Structure of Pakistan.—By Khawaja Amjad Saeed. Accountancy and Taxation Service Institute, Lahore, 1977. pp. 396.

1978 ◽  
Vol 17 (2) ◽  
pp. 264-265
Author(s):  
Moin-ud-din Moin-ud-din
Keyword(s):  
Foreign Aid ◽  
Statistical Data ◽  
International Comparisons ◽  
Balance Of Payments ◽  
Development Effort ◽  
Recent Past ◽  
World Economic ◽  
World Economic Order ◽  
The Impact ◽  
Vast Range

A number of books on Pakistan's economy have recently been published, but most of them do hot provide the latest statistical data or keep pace with events and development during the 1970's. The book under review, however, has admirably fulfilled the requirements. It covers a vast range of subjects concerning economic development in the country during the recent past The book is divided into nine parts and covers such diverse areas as development, industry, the price situation and the impact of inflation, Pakistan's planning and development effort, trade priorities and balance of payments situation, .taxation* foreign aid, and socio-economic reforms. The analysis is general, broadbased, and historical in perspective and a large amount of data have been put together. To bring out a clearer picture international comparisons are made whereever possible, especially in the last part of the book where the author reiterates on the need for a "New World Economic Order".

The Impact of Terrorism on Construction Industry in Iraq

2015 ◽  
Vol 3 (2) ◽  
pp. 69-84
Author(s):  
Wadhah Amer Hatem ◽  
Samiaah M. Hassen Al-Tmeemy
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Historical Data ◽  
Terrorist Attacks ◽  
Construction Sector ◽  
Statistical Procedures ◽  
Qualitative Approaches ◽  
Suicide Attacks ◽  
The Face ◽  
The Impact

     Suicide attacks, bombings, explosions became the part of daily life in Iraq. Consequently, the threat of terrorism put the Iraqi construction sector in the face of unique and unusual challenges that not seen on other countries. These challenges can have extensive impact on construction projects. This paper seeks to examine the impact of the terrorist attacks on construction industry and determine the extent to which the impact of terrorism on construction projects in terms of cost, schedule, and quality. This study adapted quantitative and qualitative approaches to collect data using questionnaire survey and interviews, as well as historical data. The study focused on projects that have been the target of terrorist strikes in Diyala governorate. A variety of statistical procedures were employed in data analysis. The results revealed the extent to which terrorist attacks impact construction projects in terms of cost, time, and quality. The results of this study will enhance the awareness of all construction parties to the impact of the terrorist attacks against construction projects. Eventually, this can develop a risk management assessment and assist contractors to properly protect projects and buildings to minimize injuries and fatalities in the event of terrorism.

Effects of Transport Medium Composition on in vitro Drug Permeation across Excised Pig Intestinal Tissue

2020 ◽  
Vol 10 ◽  
Author(s):  
Bianca Peterson ◽  
Henrico Heystek ◽  
Josias H. Hamman ◽  
Johan D. Steyn
Keyword(s):  
Medium Composition ◽  
Screening Tests ◽  
Intestinal Tissue ◽  
Predictive Values ◽  
Transport Medium ◽  
Intestinal Fluids ◽  
Lower Permeability ◽  
The Impact ◽  
Simulated Intestinal Fluids

Background:: Knowledge of the permeation characteristics of new chemical entities across biological membranes is essential to drug research and development. Transport medium composition may affect the absorption of compounds during in vitro drug transport testing. To preserve the predictive values of screening tests, the possible influence of transport media on the solubility of model drugs, and on the activities of tight junctions and efflux transporter proteins (e.g. P-glycoprotein) must be known. Objective:: The aim of this study was to compare the impact of different transport media on the bi-directional transport of standard compounds, selected from the four classes of the Biopharmaceutical Classification System (BCS), across excised pig intestinal tissue. Methods:: The Sweetana-Grass diffusion apparatus was used for the transport studies. Krebs-Ringer bicarbonate (KRB) buffer and simulated intestinal fluids in the fed (FeSSIF) and fasted (FaSSIF) states were used as the three transport media, while the chosen compounds were abacavir (BCS class 1), dapsone (BCS class 2), lamivudine (BCS class 3) and furosemide (BCS class 4). Results:: Abacavir exhibited lower permeability in both the simulated intestinal fluids than in the KRB buffer. Dapsone showed similar permeability in all media. Lamivudine exhibited lower permeability in FaSSIF than in the other two media. Furosemide exhibited improved transport with pronounced efflux in FaSSIF. Conclusion:: Different permeation behaviors were observed for the selected drugs in the respective media, which may have resulted from their different physico-chemical properties, as well as from the effects that dissimilar transport media components had on excised pig intestinal tissue.

The impact of maternal obesity on fetal adiposity in the third trimester

2010 ◽  
Vol 95 (Supplement 1) ◽  
pp. Fa25-Fa25
Author(s):  
N. Farah ◽  
M. Kennelly ◽  
V. Donnelly ◽  
B. Stuart ◽  
M. Turner
Keyword(s):  
Maternal Obesity ◽  
Third Trimester ◽  
The Third ◽  
The Impact

Past

2018 ◽  
Author(s):  
Barbara Kellerman
Keyword(s):  
Twentieth Century ◽  
Business Schools ◽  
First Century ◽  
Recent Past ◽  
Lao Tzu ◽  
Leadership And Management ◽  
The Third ◽  
The Enlightenment ◽  
Agents Of Change ◽  
The Many

The chapter focuses on how leadership was taught in the distant and recent past. The first section is on five of the greatest leadership teachers ever—Lao-tzu, Confucius, Plato, Plutarch, and Machiavelli—who shared a deep belief in the idea that leadership could be taught and left legacies that included timeless and transcendent literary masterworks. The second section explores how leadership went from being conceived of as a practice reserved only for a select few to one that could be exercised by the many. The ideas of the Enlightenment changed our conception of leadership. Since then, the leadership literature has urged people without power and authority, that is, followers, to understand that they too could be agents of change. The third section turns to leadership and management in business. It was precisely the twentieth-century failure of business schools to make management a profession that gave rise to the twenty-first-century leadership industry.

Law and Economics

2020 ◽  
pp. 84-102
Author(s):  
Daniel B. Kelly
Keyword(s):  
Economic Analysis ◽  
First Generation ◽  
Law And Economics ◽  
Private Law ◽  
Foreseeable Future ◽  
Business Associations ◽  
The Third ◽  
Starting Point ◽  
The Law ◽  
The Impact

This chapter analyzes how law and economics influences private law and how (new) private law is influencing law and economics. It focuses on three generation or “waves” within law and economics and how they approach private law. In the first generation, many scholars took the law as a starting point and attempted to use economic insights to explain, justify, or reform legal doctrines, institutions, and structures. In the second generation, the “law” at times became secondary, with more focus on theory and less focus on doctrines, institutions, and structures. But this generation also relied increasingly on empirical analysis. In the third generation, which includes scholars in the New Private Law (NPL), there has been a resurgence of interest in the law and legal institutions. To be sure, NPL scholars analyze the law using various approaches, with some more and some less predisposed to economic analysis. However, economic analysis will continue to be a major force on private law, including the New Private Law, for the foreseeable future. The chapter considers three foundational private law areas: property, contracts, and torts. For each area, it discusses the major ideas that economic analysis has contributed to private law, and surveys contributions of the NPL. The chapter also looks at the impact of law and economics on advanced private law areas, such as business associations, trusts and estates, and intellectual property.

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