Temperature-Based Grapevine Ripeness Modeling for cv. Touriga Nacional and Encruzado in the Dão Wine Region, Portugal

In the present study, we calibrated and validated thermal models to predict the DOY date at which the grape maturity index, potential alcohol/total acidity (PA/TA), reaches 0.75 (MS0.75), 1.0 (MS1), 1.5 (MS1.5), and 2.0 (MS2) for two grapevine Portuguese varieties, Touriga Nacional (TN) and Encruzado (EN), growing in the Dão wine region, Portugal. Daily rates of forcing calculated with the Sigmoid function (SM) and the Degree Day function (DD) were used. The outcomes show that the best performance of the models was obtained for the heat accumulation starting at flowering (tx = EL23). The analysis of model sensitivity to changes in forcing rate coefficients (T0, e, and d) enabled the selection of the same models for all maturity stage of each variety. The selected models revealed significant predictability, though dependent on the grape maturity stage and variety (EFF > 0.81 for TN and EFF > 0.75 for EN). The non-linear regression analyses of sugar concentration (SC) and total acidity (TA) with heat accumulation, calculated using the select models, demonstrated that a high fraction of SC and TA variance was explained by the variation of these temperature-based indices. Comparatively to SC and TA, the results highlight that the thermal conditions accumulated from flowering had a lower influence on pH juice variance.

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Evaluation of a permissible roadbed thawing depth in permafrost

Energy Safety and Energy Economy ◽

10.18635/2071-2219-2021-5-18-22 ◽

2021 ◽

Vol 5 ◽

pp. 18-22

Author(s):

Alexandr Galkin

Keyword(s):

Thermal Resistance ◽

Biot Number ◽

Seasonal Changes ◽

Construction Materials ◽

Thermal Conditions ◽

Road Base ◽

Thawing Depth ◽

Roadway Construction ◽

Selection Of ◽

Purpose Of Evaluation

Roadbed thermal conditions in permafrost are subject to seasonal changes affecting roadway resilience. A roadbed thawing depth is important for road base processing, especially in permafrost. This research had the purpose of evaluation of a permissible roadbed thawing depth based on the Biot number reflecting general thermal resistance of roadbed layers. These results will contribute to understanding road bed thermal resistance and selection of roadway construction materials.

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The Optimum Energy Saving Measures for Retrofitting Residential Buildings

Open House International ◽

10.1108/ohi-01-2016-b0012 ◽

2016 ◽

Vol 41 (1) ◽

pp. 88-92

Author(s):

Rong-Yue Zheng ◽

Jian Yao

Keyword(s):

Energy Saving ◽

Energy Savings ◽

Residential Buildings ◽

Thermal Conditions ◽

High Energy ◽

Cold Winter ◽

Efficiency Measures ◽

Optimum Energy ◽

Potential Energy Saving ◽

Selection Of

A large number of residential buildings in hot summer and cold winter zone of China are non-energy efficient with poor indoor thermal conditions. Retrofitting residential buildings with energy efficiency measures is thus important for residents. However, this work progressed slowly because practically applicable measures that not only have high energy savings but also improve indoor thermal performance have not been studied. Thus, this paper carried out a simulation study on the selection of suitable energy saving measures for residential buildings in hot summer and cold winter zone of China. Five potential energy saving options are considered and the energy, indoor thermal comfort and economic performance are compared. The results show that adding movable solar shades is the optimum option with all performance indices ranking first. Meanwhile, this measure is also the only acceptable energy saving solution for residents since its payback period is less than the lifespan of a building. As a conclusion, it is recommended to use movable solar shades as a first priority when retrofitting residential buildings.

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Selection of the method for calculating the thermal conditions in the optical elements of lasers

Soviet Journal of Quantum Electronics ◽

10.1070/qe1972v001n05abeh003252 ◽

1972 ◽

Vol 1 (5) ◽

pp. 489-495

Author(s):

B R Belostotskii

Keyword(s):

Thermal Conditions ◽

Optical Elements ◽

Selection Of

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Selection Principles and Investigation of Substances for Synthesis of Composite Medium-Temperature Phase Change Materials for Space Heating and Domestic Hot Water

Materials Science Forum ◽

10.4028/www.scientific.net/msf.989.165 ◽

2020 ◽

Vol 989 ◽

pp. 165-171

Author(s):

A.M. Morzhukhin ◽

D.S. Testov ◽

S.V. Morzhukhina

Keyword(s):

Phase Change ◽

Phase Change Materials ◽

Hot Water ◽

Temperature Phase ◽

Heat Accumulation ◽

Medium Temperature ◽

Domestic Hot Water ◽

Selection Principles ◽

Salt Hydrates ◽

Selection Of

The types of heat accumulation and the types of heat-accumulating materials are considered. It is shown that the most promising as heat-accumulating materials for heating and hot water are the salts hydrates. Based on the conducted factor analysis, a number of criteria are excluded from further consideration, which significantly reduces the list of criteria considered for selecting phase change materials (PCM) and simplifies further work on the selection of the most promising materials. There were selected from over 160 salt hydrates as PCM for the future of composite synthesis for the heating and hot water the Na (CH3COO) •3H2O, Ba (OH)2•8H2O, Mg (NO3)2 •6H2O and Zn (NO3)2•6H2O.

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Regression analyses of southern African ethnomedicinal plants: informing the targeted selection of bioprospecting and pharmacological screening subjects

Journal of Ethnopharmacology ◽

10.1016/j.jep.2008.07.040 ◽

2008 ◽

Vol 119 (3) ◽

pp. 356-364 ◽

Cited By ~ 32

Author(s):

E. Douwes ◽

N.R. Crouch ◽

T.J. Edwards ◽

D.A. Mulholland

Keyword(s):

Regression Analyses ◽

Ethnomedicinal Plants ◽

Pharmacological Screening ◽

Selection Of

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The Arrow-Dot Test as a Predictor of Police Officer Performance

Perceptual and Motor Skills ◽

10.2466/pms.1977.45.3.683 ◽

1977 ◽

Vol 45 (3) ◽

pp. 683-693 ◽

Cited By ~ 2

Author(s):

Melany E. Baehr ◽

Ernest C. Froemel

Keyword(s):

Police Officers ◽

Test Battery ◽

Performance Criteria ◽

Regression Analyses ◽

Potential Predictor ◽

Officer Performance ◽

Pencil And Paper ◽

And Performance ◽

Project Personnel ◽

Selection Of

In the course of validating a test battery for the selection of police officers (Baehr, Furcon, & Froemel, 1969), project personnel were searching for objectively scored, pencil-and-paper measures of behavior variables. One product of this search was an adaptation of the Arrow-Dot subtest of the four-part IES test battery (Dombrose & Slobin, 1958). This adaptation was designed for group administration and for improved reliability as a possible predictor of performance. Intercorrelational analysis and factor analysis of intercorrelations with other potential predictor variables and performance criteria provided some information on the nature of the Arrow-Dot scores. The test's ability to predict police officers' performance was assessed through multiple regression analyses of its scores both as independent predictors and as contributors of unique variance in a wider predictor battery. Its usefulness for diagnosis of specific problems in police officers' performance was also investigated. Application in five additional studies permitted an exploration of the “characteristic” Arrow-Dot dimension profile for police officers.

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Quality of Human Resources in Europe Measured by Selected Indicators of Human Potential

Khazar Journal of Humanities and Social Sciences ◽

10.5782/2223-2621.2017.20.1.60 ◽

2017 ◽

Vol 20 (1) ◽

pp. 60-76

Author(s):

Slavomir Bucher

Keyword(s):

Human Resources ◽

Regional Differences ◽

Spatial Differentiation ◽

Human Potential ◽

Regional Differentiation ◽

Regression Analyses ◽

Wide Range ◽

Selection Of

The paper deals with regional differentiation of human resources and its determinants identified by selected indicators of human potential. The selection of correct and relevant indicators has a key role in the identification and measurement of human potential. The aim of the study is to outline causal and determinant relationship (the relation and the level of dependence) in the spatial differentiation of human resources in Europe and approaches to their interpretation. The main purpose of this paper is to analyze the link between human potential and quality or inequality of life and its effect on population from a demographic viewpoint. Methods of correlation and regression analyses were applied. A wide range of the most important and most often used human potential assessment indicators based on a basic systemic classification of human potential will also be presented. Although the first glance the quality of human resources situation in Europe might seem relatively compact, deeper analysis showed that there are quite significant regional differences. Our results show that set of specific condition a constant or moderately growing human capital may aggravate the consequences of population ageing rather than alleviate them. The important results of this study include recognition of the existence of several easily manageable methods and ways of measuring demographic and/or socio-economic solutions to the challenges posed by quality of human resources in Europe.

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Ion-Molecule Reaction Studies below 80 K by the CRESU Technique

Symposium - International Astronomical Union ◽

10.1017/s0074180900153719 ◽

1987 ◽

Vol 120 ◽

pp. 19-23

Author(s):

J. B. Marquette ◽

B. R. Rowe ◽

G. Dupeyrat ◽

G. Poissant

Keyword(s):

Low Temperatures ◽

Reaction Rate ◽

Thermal Conditions ◽

Polar Molecule ◽

Rate Coefficients ◽

Third Body ◽

Basic Principles ◽

Molecule Reaction

The basic principles of the CRESU technique (Cinétique de Réactions en Ecoulement Supersonique Uniforme) are presented. This technique allows ion-molecule reaction rate coefficients under true thermal conditions at interstellar temperatures. Various behaviors of both third-body association and binary reactions with temperature have been observed, including ion-polar molecule reactions whose rate coefficients sharply increase at very low temperatures.

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THE REGULATION OF PHYSICAL AND MECHANICAL PARAMETERS OF CERAMIC BRICKS DEPENDING ON THE DRYING REGIME/KERAMINIŲ PLYTŲ FIZIKINIŲ IR MECHANINIŲ SAVYBIŲ REGULIAVIMAS DŽIOVINIMO REŽIMU

Journal of Civil Engineering and Management ◽

10.3846/1392-3730.2008.14.25 ◽

2008 ◽

Vol 14 (4) ◽

pp. 263-268 ◽

Cited By ~ 10

Author(s):

Romualdas Mačiulaitis ◽

Jurgita Malaiškienė ◽

Asta Kičaitė

Keyword(s):

Compressive Strength ◽

Ceramic Production ◽

Maximum Temperature ◽

Empirical Equations ◽

Mechanical Parameters ◽

Regression Analyses ◽

High Quality ◽

Ceramic Samples ◽

Drying Regime ◽

Selection Of

In the scientific studies the influence of burning regime or composition of formation mix on the final properties of the ceramic bricks is analysed most often. However, drying regime is also of paramount importance in the process of the high quality ceramic production. The formed ceramic samples were dried according to 8 different drying regimes while burning regime was not varied during the investigation. The dried samples were burnt for 24 hours keeping the maximum temperature 1050 °C for 3 hours. Later on these parameters were determined experimentally: density, general shrinkage, compressive strength and rate of ultrasound spread. As the statistical and regression analyses of data were performed, the empirical equations, showing how the selected stages of drying regime influence the physical and mechanical parameters of ceramics, and vice versa, how the selection of the dimensions of the stages of drying regime depends on the desired values of the ceramics properties, were derived. Santrauka Statybinės keramikos kokybę labai lemia formavimo masės komponentų ir jų kiekių bei degimo režimo parinkimas. Tačiau taip pat labai svarbus yra ir teisingas keraminio pusgaminio džiovinimo režimo parinkimas, nes netinkamas keraminių pusgaminių džiovinimo intensyvumas gali būti pagrindinė keramikos dirbinių defektų atsiradimo priežastis. Defektų keramikos bandiniuose atsiranda todėl, kad per intensyviai džiovinant bandinius pusgaminyje atsiranda vidinių įtempių, kurie dėl per greito laisvo vandens pasišalinimo viršija leistinus ir pusgaminis trūkinėja net nepradėjus degimo proceso. Todėl, norint gauti kokybiškus keraminius dirbinius, yra svarbu nustatyti, kaip parinkti džiovinimo etapų dydžiai daro įtaką galutinėms keraminės šukės fizikinių-mechaninių rodiklių reikšmėms, taip pat būtų aktualu išnagrinėti džiovinimo režimo reguliavimo galimybes praktiškai. Tikslui pasiekti buvo suformuoti vienodos sudėties keraminiai bandiniai, kurie buvo išdžiovinti pagal 8 skirtingus džiovinimo režimus ir išdegti pagal vieną pasirinktą režimą. Vėliau eksperimentiškai buvo nustatyti pasirinkti fizikiniaimechaniniai rodikliai. Atlikta statistinė ir regresinė analizė, gautos empirinės lygtys, kurias naudojant galima parinkti džiovinimo režimą pagal norimus gauti fizikinius-mechaninius rodiklius, ir, atvirkščiai, parinkus džiovinimo režimą galima prognozuoti, kokios keraminės šukės fizikinių-mechaninių rodiklių reikšmės bus gautos.

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