scholarly journals An Automatic Tool for the Determination of Housing Rental Prices: An Analysis of the Italian Context

2021 ◽  
Vol 14 (1) ◽  
pp. 309
Author(s):  
Francesco Tajani ◽  
Felicia Di Liddo ◽  
Rossana Ranieri ◽  
Debora Anelli
Keyword(s):  
Private Investment ◽  
Social Needs ◽  
Local Market ◽  
Extrinsic Factors ◽  
Rental Market ◽  
Functional Relationships ◽  
Valuation Model ◽  
Italian Context ◽  
Significant Factors

In the last decades, some global events such as the economic crisis of 2008 and the COVID-19 emergency of 2020, have generated more attention towards the housing rental market and its capacity to meet several social needs. In order to study the existent demand for houses, then define the interventions on the residential assets to make them more affordable for the most fragile population groups, adequate evaluation tools are required. With reference to the residential property segment of five metropolitan cities located in the Italian territory, the present research is aimed at analyzing the contribution of the most influencing factors on rental prices. In particular, this research refers to the rented properties of the second half of 2019, with a set of variables that represent the intrinsic and extrinsic factors of the local market. The implementation of an automated valuation model allows the determination of the most significant factors and the functional relationships that they have with housing rental fees. The outputs obtained could support the improvement of equitable public housing policies or could guide private investment decisions, such as refurbishment interventions of certain significant factors that could increase the market rental value. This study is the first step in wider research that is currently in progress, which aims to investigate the effects of the existing COVID-19 pandemic on the residential rental market.

scholarly journals Determination of essential and non-essential element contents of drinking water and baby water for infant’s nutrition

2021 ◽  
Vol 44 (1) ◽  
pp. 194-202
Author(s):  
Funda Demir ◽  
Meral Yildirim Ozen ◽  
Emek Moroydor Derun
Keyword(s):  
Water Samples ◽  
Infant Nutrition ◽  
Tap Water ◽  
Essential Element ◽  
Essential Elements ◽  
Local Market ◽  
Drinking Waters ◽  
Significant Difference ◽  
Element Contents

Abstract In this study, essential (Ca, Cr, Cu, Fe, K, Mg, Na, P, Zn), and non-essential (Al, Ni, Pb) element contents of the drinking and baby water samples which are sold in the local market and tap water samples in Istanbul were examined. It was determined that elements of Cr, Cu, Fe, P, Zn, Al, and Ni were below detection limits in all water samples. Among the non-essential elements analyzed in water samples, Pb was the only detected element. At the same time, the percentages that meet the daily element requirements of infants were also calculated. As a result of the evaluations made, there is no significant difference in infant nutrition between baby waters and other drinking waters in terms of the element content.

Stochastic Models for Actuarial Use: The Equilibrium Modelling of Local Markets

2009 ◽  
Vol 39 (1) ◽  
pp. 339-370 ◽  
Author(s):  
Robert J. Thomson ◽  
Dmitri V. Gott
Keyword(s):  
Local Market ◽  
Market Participants ◽  
Market Portfolio ◽  
One Year ◽  
The One ◽  
Mean Variance ◽  
Annual Time ◽  
Time Subject

AbstractIn this paper, a long-term equilibrium model of a local market is developed. Subject to minor qualifications, the model is arbitrage-free. The variables modelled are the prices of risk-free zero-coupon bonds – both index-linked and conventional – and of equities, as well as the inflation rate. The model is developed in discrete (nominally annual) time, but allowance is made for processes in continuous time subject to continuous rebalancing. It is based on a model of the market portfolio comprising all the above-mentioned asset categories. The risk-free asset is taken to be the one-year index-linked bond. It is assumed that, conditionally upon information at the beginning of a year, market participants have homogeneous expectations with regard to the forthcoming year and make their decisions in mean-variance space. For the purposes of illustration, a descriptive version of the model is developed with reference to UK data. The parameters produced by that process may be used to inform the determination of those required for the use of the model as a predictive model. Illustrative results of simulations of the model are given.

scholarly journals Determination of egg yolk content in egg liqueurs

2011 ◽  
Vol 22 (No. 1) ◽  
pp. 9-15 ◽  
Author(s):  
H. Čížková ◽  
M. Voldřich ◽  
V. Prokorátová ◽  
F. Kvasnička
Keyword(s):  
Dry Matter ◽  
Raw Materials ◽  
Egg Yolk ◽  
Local Market ◽  
Chemical Markers ◽  
Regression Analyses ◽  
Food Law ◽  
Minimal Concentration ◽  
Egg Composition

The recent Czech Food law (Decree No. 264/2003, 93/2000 and 57/2003 of the law No. 110/1997 as amended) requires the minimal concentration of egg or egg yolk content in relevant food products (mayonnaises, egg pastas, egg liqueurs), however, the methods for the determination of egg and/or egg yolk content are not sufficiently specified. The presented study deals with the development and evaluation of the analytical methods for the determination of egg yolk content in egg liqueurs. Due to the high variability of the egg composition and a possible effect of processing on the composition of the product, several chemical markers were taken into the consideration: dry matter, phosphorus, fat, cholesterol, fatty acids, and lysozyme concentrations. The egg yolk content was estimated by means of multiple regression analyses of the calibration set (model samples) and the data obtained for raw materials and described in literature. According to the egg yolk content determined, only 6 from 10 analysed samples of egg liqueurs obtained from the local market met the limit of 140 g/l (calculated with the 10% standard deviation error of estimation) required by the recent Czech legislation.  

Land Use, Economic Welfare and Property Values

2020 ◽  
pp. 414-437
Author(s):  
Pierluigi Morano ◽  
Francesco Tajani ◽  
Marco Locurcio
Keyword(s):  
Private Investment ◽  
Economic Welfare ◽  
Explanatory Variables ◽  
Functional Relationships ◽  
Planning Decisions ◽  
Property Prices ◽  
Socio Economic Variables ◽  
Definition Of ◽  
Investment Choices

In the paper an analysis of functional correlations of property prices with the main locational and socio-economic variables, which generally contribute to define the market value of properties, has been developed. Locational characteristics are represented by the surfaces of soil used for the main functions, borrowing the logic of the system of classification of CORINE Land Cover (European Commission). The analysis has been contextualized to the 258 municipalities of the Apulia region (Southern Italy), and has been referred to two different moments (years 2006 and 2011), and two different market segments (residential and retail). The functional relationships between property prices and explanatory variables considered, estimated through a software that implements a genetic algorithm, are particularly interesting. The methodology outlined constitutes a valuable reference for the definition of models aimed at supporting, in a more rational and convenient way, public planning decisions and private investment choices.

scholarly journals Multi-Element Determination of Toxic and Nutrient Elements by ICP-AES after Dispersive Solid-Phase Extraction with Modified Graphene Oxide

2020 ◽  
Vol 10 (23) ◽  
pp. 8722
Author(s):  
Natalia Manousi ◽  
Eleni Deliyanni ◽  
George Zachariadis
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Emission Spectrometry ◽  
Local Market ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Modified Graphene Oxide

A novel graphene-oxide-derived material was synthesized after modification of graphene oxide with sodium hydroxide and used for the dispersive solid-phase extraction (d-SPE) of different elements (Pb, Cd, Ba, Zn, Cu and Ni) prior to their determination by inductively coupled plasma atomic emission spectrometry (ICP-AES). The prepared nanomaterial was characterized by X-ray diffraction (XRD), nitrogen adsorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared (FTIR) spectroscopy. Full factorial design and Derringer’s type desirability function were used for the optimization of the d-SPE procedure. Pareto charts illustrated the effects of each of the examined factors and their interactions on the determination of the elements. Under the optimum conditions, detection limits (LODs) for the elements ranged between 0.01 and 0.21 μg g−1, intra-day repeatability (n = 5) was lower than 1.9% and inter-day repeatability (n = 5 × 3) was lower than 4.7%. Relative recovery values ranged between 88.1 and 117.8%. The method was validated and successfully applied for the determination of trace elements in poultry, pork and beef samples from the local market. The proposed method is simple, rapid, sensitive and the novel sorbent can be used at least ten times.

Determination of the Elastic and Plastic Properties of Transversely Isotropic Thin Films on Substrates by Sharp Indentation

MRS Advances ◽  
2018 ◽  
Vol 3 (8-9) ◽  
pp. 445-450
Author(s):  
Zheng Zhi ◽  
T. A. Venkatesh
Keyword(s):  
Thin Films ◽  
Material Properties ◽  
Transversely Isotropic ◽  
Indentation Method ◽  
Plastic Properties ◽  
Response Characteristics ◽  
Functional Relationships ◽  
Thin Film System ◽  
Indentation Response

ABSTRACTA combination of dimensional analysis and finite element modeling was invoked to characterize the indentation behavior of transversely isotropic thin films on substrate materials. Through indentation simulations of over 13,500 combinations of properties for the thin film system, functional relationships that connect the indentation responses of the thin films with the elastic and plastic properties of the thin films were obtained. The forward algorithms that predict the indentation response characteristics from known material properties and the reverse algorithms that predict the material properties from known indentation responses were verified to be very accurate. Thus, the viability of using the indentation method to determine the elastic and plastic properties of transversely isotropic thin films on substrate materials was demonstrated.

scholarly journals Comparison of Membrane Filtration and Replica Plate Technique to Detect Fecal Coliform

2018 ◽  
Vol 17 (2) ◽  
pp. 25-31 ◽  
Author(s):  
Bikram Gautam ◽  
Rameshwar Adhikari
Keyword(s):  
Fecal Coliform ◽  
Membrane Filtration ◽  
Pearson Correlation ◽  
Total Coliform ◽  
Fecal Coliforms ◽  
Kathmandu Valley ◽  
Local Market ◽  
Extrinsic Factors ◽  
Colony Forming Units ◽  
Routine Basis

Introduction: Membrane filtration (MF) is one of the widely used technique on a routine basis. On the other hand, replica plate (RP) technique can be used to transfer existing bacterial colonies in two plates which even allows pinpointing the original colony. The aim of this study is to comparatively detect the cfu/100 mL of fecal coliform using membrane filtration and replica plate techniques.Methods: In the study, a total of 25 bottled water were selected from the local market in Kathmandu valley. The total coliform count was detected using MF, while fecal coliform was detected using both MF and RP technique.Results: It was found that the average cfu/100 mL for total coliform, fecal coliform (MF) and fecal coliform (RP) were 143.38, 49.82 and 51.00 respectively. Pearson correlation coefficient calculated between total coliform and fecal coliform (MF), total coliform and fecal coliform (RP), fecal coliform (MF) and fecal coliform (RP) were found to be 0.695, 0.733 and 0.990 respectively; implying a positive correlation Conclusions: It has been demonstrated that intrinsic and extrinsic factors influence colony forming units. Furthermore, RP is a more sensitive method for screening fecal coliforms although both MF and RP can be efficiently used.

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