FORECASTS ON THE EVOLUTION OF THE TITANIUM MARKET USING THE STATISTICAL-MATHEMATICAL FORECASTING METHODS

2020 ◽  
Author(s):  
Dragos Marcu ◽  
Augustin Semenescu ◽  
Adrian Ioana ◽  
Dorel Stoica ◽  
Roxana Solea
Keyword(s):  
Suitable Method ◽  
Base Period ◽  
Mathematical Methods ◽  
Price Forecast ◽  
Forecasting Methods ◽  
Existing Data

This paper aims to achieve the titanium price forecast using specific mathematical methods and to evaluate the most suitable method for this estimation. Based on existing data, we will extrapolate through various methods to calculate the estimated values for the period 2019-2021. In order to evaluate the quality of the estimated values, we will compare the actual values from the base period with the values obtained by the different methods.

A COMPARISON OF FORECASTING THE RESULTS OF ROAD TRANSPORTATION NEEDS

Transport ◽  
2012 ◽  
Vol 27 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Bogna Mrówczyńska ◽  
Karolina Łachacz ◽  
Tomasz Haniszewski ◽  
Aleksander Sładkowski
Keyword(s):  
Harmonic Analysis ◽  
Percentage Error ◽  
Road Transportation ◽  
Artificial Immune ◽  
Mathematical Methods ◽  
Average Percentage ◽  
The Past ◽  
Forecasting Methods ◽  
Average Percentage Error

Determining the size and quality of transport needs would not be possible without adequate forecasting based on the sales volume or demand for this service from the past periods. Traditional forecasting methods use econometric models that may be subject to serious errors. The use of the methods taking into account the variability of the studied phenomena or more advanced mathematical methods enables to minimize the error. Various methods of artificial intelligence such as a neural network, fuzzy sets, genetic algorithms, etc., have been recently successfully applied. The aim of this paper is to compare three forecasting methods that can be used for predicting the volume of road freight. The article deals with the effectiveness of three prediction methods, namely Winter's method for seasonal problems – a multiplicative version, harmonic analysis and harmonic analysis aided by the artificial immune system. The effectiveness of prediction was counted using MAPE errors (main average percentage error). The results of calculations were compared and the best example was presented.

How Does Mindfulness Affect Cognition? A Reflection on Confounding Issues Surrounding Mindfulness-based Intervention Research Targeting Cognitive Outcomes

2018 ◽  
Author(s):  
David R Vago ◽  
Resh Gupta ◽  
Sara Lazar
Keyword(s):  
Systematic Review ◽  
Health Outcomes ◽  
Cognitive Functioning ◽  
Cognitive Processes ◽  
Methodological Quality ◽  
Cognitive Outcomes ◽  
Controlled Trials ◽  
Randomized Controlled ◽  
Existing Data

One potential pathway by which mindfulness-based meditation improves health outcomes is through changes in cognitive functioning. A systematic review of randomized controlled trials of mindfulness-based interventions (MBIs) was conducted with a focus on assessing the state of the evidence for effects on cognitive processes and associated assays. Here, we comment on confounding issues surrounding the reporting of these and related findings, including 1) criteria that appropriately define an MBI; 2) limitations of assays used to measure cognition; and 3) methodological quality of MBI trials and reporting of findings. Because these issues contribute to potentially distorted interpretations of existing data, we offer constructive means for interpretation and recommendations for moving the field of mindfulness research forward regarding the effects on cognition.

STAGES OF THE PERSONNEL PLANNING PROCESS OF A MEDICAL ORGANIZATION. METHODS FOR FORECASTING PERSONNEL NEEDS

2020 ◽  
Author(s):  
N.D. Kobzeva ◽  
◽  
R.S. Durov ◽  
E.V. Varnakova ◽  
K.O. Kobzev ◽  
...  
Keyword(s):  
Planning Process ◽  
Mathematical Methods ◽  
Medical Organization ◽  
Personnel Planning ◽  
Forecasting Methods ◽  
Characteristic Features ◽  
Personnel Needs

The article deals with the stages of personnel planning, as well as forecasting methods. The characteristic features of forecasting methods and their types are analyzed. Considerable attention is paid to the stages of personnel planning. Based on the analysis, the author comes to the conclusion that personnel planning and forecasting is an integral part for any successful organization. It is worth noting that mathematical methods of planning will become more relevant than methods based on judgments.

scholarly journals Quality Assurance in Knowledge Data Warehouse

2017 ◽  
Author(s):  
Andysah Putera Utama Siahaan
Keyword(s):  
Decision Making ◽  
Knowledge Discovery ◽  
Data Warehouse ◽  
Noisy Data ◽  
Strategic Decision ◽  
Strategic Decision Making ◽  
Quality Of Information ◽  
External Data ◽  
Existing Data

Knowledge discovery is the process of adding knowledge from a large amount of data. The quality of knowledge generated from the process of knowledge discovery greatly affects the results of the decisions obtained. Existing data must be qualified and tested to ensure knowledge discovery processes can produce knowledge or information that is useful and feasible. It deals with strategic decision-making for an organization. Combining multiple operational databases and external data create the data warehouse. This treatment is very vulnerable to incomplete, inconsistent, and noisy data. Data mining provides a mechanism to clear this deficiency before finally stored in the data warehouse. This research tries to give technique to improve the quality of information in the data warehouse.

scholarly journals (Kink; Kink; Kink; Kink) and (Pulse; Pulse; Pulse; Pulse) Solutions of a Set of Four Equations Modeled in a Nonlinear Hybrid Electrical Line with Crosslink Capacitor

2019 ◽  
pp. 1-14
Author(s):  
Tiague Takongmo Guy ◽  
Jean Roger Bogning
Keyword(s):  
Partial Differential Equations ◽  
Differential Equations ◽  
Solitary Waves ◽  
Nonlinear Partial Differential Equations ◽  
Mathematical Methods ◽  
Hyperbolic Functions ◽  
Partial Differential ◽  
Hybrid Parts ◽  
Nonlinear Hybrid

The physics system that helps us in the study of this paper is a nonlinear hybrid electrical line with crosslink capacitor. Meaning it is composed of two different nonlinear hybrid parts Linked by capacitors with identical constant capacitance. We apply Kirchhoff laws to the circuit of the line to obtain new set of four nonlinear partial differential equations which describe the simultaneous dynamics of four solitary waves. Furthermore, we apply efficient mathematical methods based on the identification of coefficients of basic hyperbolic functions to construct exact solutions of those set of four nonlinear partial differential equations. The obtained results have enabled us to discover that, one of the two nonlinear hybrid electrical line with crosslink capacitor that we have modeled accepts the simultaneous propagation of a set of four solitary waves of type (Pulse; Pulse; Pulse; Pulse), while the other accepts the simultaneous propagation of a set of four solitary waves of type (Kink; Kink; Kink; Kink) when certain conditions we have established are respected. We ameliorate the quality of the signals by changing the sinusoidal waves that are supposed to propagate in the hybrid electrical lines with crosslink capacitor to solitary waves which are propagating in the new nonlinear hybrid electrical lines; we therefore, facilitate the choice of the type of line relative to the type of signal that we want to transmit.

scholarly journals USE OF MATHEMATICAL METHODS FOR OPTIMIZATION OF 110 KV ELECTRIC NETWORK DEVELOPMENT

2020 ◽  
Author(s):  
Maksym Hrebenichenko
Keyword(s):  
Power Systems ◽  
Power Supply ◽  
Capacity Constraints ◽  
Power Lines ◽  
Network Development ◽  
Mathematical Methods ◽  
Electric Networks ◽  
Electric Network ◽  
Supply Capacity

At optimization of development of electric networks of power systems voltage and a configuration of networks are chosen, the order of construction of objects of electric networks is established. The criterion of optimality in optimization is the sum of dynamic consolidated costs for all network elements. The decision must take into account the dynamics of development of power systems networks, requirements for reliability and quality of power supply, capacity constraints on power lines and transformer substations.

scholarly journals NEW INFORMATION TECHNOLOGIES FOR ANALYSIS SKELETON PLANAR SCINTIGRAMMS OF PATIENTS WITH BREAST CANCER

2019 ◽  
Vol 23 (2) ◽  
pp. 187-196
Author(s):  
Xinmei Kang ◽  
N. E. Kosykh ◽  
E. A. Levkova ◽  
V. A. Razuvaev ◽  
S. Z. Savin
Keyword(s):  
Breast Cancer ◽  
Expert System ◽  
Bone Metastases ◽  
Information Technologies ◽  
Metastatic Lesion ◽  
High Tech ◽  
Mathematical Methods ◽  
System Building ◽  
Average Brightness

In work is described practical approach to the expert system building for the analysis skeleton planar scintigramms. The aim is to analyze the numerical characteristics of bone metastases by scintigraphy. Objective. Progress in the development of bioinformatics and mathematical methods in biomedicine, as well as the development of computer and telecommunications systems and networks determines the look of the present and future of oncology technology and of medicine in general. At last years of one of the directions of high-tech-medicine development is a processing the digital image: improvement of quality of image, recovering image, its recognition of separate elements. Recognition of pathological processes is one of the most important problems of processing the medical image. Methods and results. Method of computer-aided analysis of planar osteostsintigrammy studied the skeleton of patients with breast cancer are in complete remission and in the phase progression of the disease with metastases to the skeleton. As analyzed parameter was used brightness of images. The study of the physiological accumulation of radiopharmaceuticals in patients without metastasis to the skeleton indicates a wide variation in the brightness values of the scintigram in some areas of the skeleton. At the same anatomical areas of the skeleton there are significant differences in the values of the index of average brightness. In almost all areas of the skeleton averages of the brightness lesions hyperfixation RFP for scintigram significantly prevail over those of «physiological» lesions hyperfixation. Thus, there is a direct relationship between the levels of accumulation of the radiopharmaceutical in areas of the skeleton without metastatic lesion and bone metastases occurring in these zones. Consider methodological approaches to studies of quality of qualifier at the expert system building for the analysis skeleton planar scintigramms, as well as results of conducting calculations.

scholarly journals EVALUATION OF SOME BUSINESS MACRO ENVIRONMENT FORECASTING METHODS

2006 ◽  
Vol 7 (3) ◽  
pp. 111-117 ◽  
Author(s):  
Vulfs Kozlinskis ◽  
Kristine Guseva
Keyword(s):  
World Bank ◽  
Future Expectations ◽  
The World Bank ◽  
Forecasting Methods ◽  
The World ◽  
Survey Results ◽  
System Of Parameters ◽  
Key Indicators ◽  
Further Development

Latest studies in the field of business macro environment (BME) assessment and forecasting have been undertaken and successfully implemented by the World Bank (2003–2004). Considerable contribution to the field has been made by Nobel Prize winners in Economics F. Kydland and E. Prescott in 2004. Nonetheless, a number of issues concerning BME evaluation and forecasting is still left unstudied. The Article highlights two major issues of BME: the fist part of the paper is focused on assessment of BME and the quality of BME development prognosis made by entrepreneurs. Based on key findings the following second part of the research examines the accuracy (validity) of businessmen prognosis and identifies key indicators businessmen rely on for formulating their future expectations. For that purpose a system of parameters and trends, as well as entrepreneurs’ survey results have been applied. The study concludes by illustrating the effect of inaccurately formulated prognosis and expectation on further development of BME events in conjunction with new assessment and forecasting proposals.

Study of Incompleteness Medical Records of Inpatient in Appendicitis Cases at Dr. Reksodiwiryo Hospital Padang

2022 ◽  
Vol 2 (1) ◽  
pp. 39-44
Author(s):  
Nurhasanah Nasution
Keyword(s):  
Medical Record ◽  
Medical Records ◽  
Research Method ◽  
Digestive Surgery ◽  
Diagnostic Codes ◽  
Diagnosis Codes ◽  
Service Information ◽  
Incomplete Filling ◽  
Existing Data

Background: Incomplete filling of medical record files for inpatients at Dr. Reksodiwiryo hospital medical records will be describe health services and the quality of medical record services. Medical record quality services include the completeness of medical record files, accuracy in providing diagnosis and diagnosis codes, as well as speed in providing service information. The requirements for quality medical records must be accurate, complete, reliable, valid, timely, usable, common, comparable, guaranteed, and easy.Methods: This research method is a descriptive with a retrospective approach or looking at existing data. This study was carried out in September 2021. The population was 70 files cases of inpatient digestive surgery. Samples were taken from 27 files of inpatients with appendicitis cases.Results: From the research that has been done, the highest percentage of incomplete identification components is found on the gender item about 81.48%, the highest percentage of incomplete important report components is obtained on the medical resume and informed consent items about 11.1%. The highest percentage of incomplete authentication components was obtained in the nursing degree about 96.3%. The highest percentage of the components of the recording method was obtained by 59.3%, there are several blank sections about 16 files. The percentage of incomplete diagnostic codes and procedures is 100%  Conclusions: the researcher suggested that the hospital can have an Operational Standart on filling out the completeness of medical records files

Women and Media

2021 ◽  
pp. 8-23
Author(s):  
Zeljka Lekic-Subasic
Keyword(s):  
Decision Making ◽  
Public Sphere ◽  
Gender Equality ◽  
Public Service ◽  
General Public ◽  
The Public ◽  
The Media ◽  
Existing Data ◽  
National Borders

Difficulties that women face in the media professions and discrimination against women's access to decision-making posts within the media is a problem that transcends national borders. Becoming a greater part of this particular workforce would help to expand both the amount and quality of visibility for women – in news, television, and public sphere in general. Public service media (PSM), as broadcasting, made, financed, and controlled by the public and for the public, with the output designed to reach everyone and reflect all voices, should treat gender equality with the utmost importance. The existing data indicate however that, although some progress have been made, there is a lot to be done: while women among European PSMs represent 44% of the workforce, the number falls to less than 25% at the higher and executive positions. This chapter analyses the efforts made by the European Broadcasting Union's members and the measures they recommend.

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