scholarly journals An effective and efficient visual quality index based on local edge gradients

Author(s):  
Heinz Hofbauer ◽  
Andreas Uhl
2019 ◽  
Vol 9 (8) ◽  
pp. 1579 ◽  
Author(s):  
Zanon ◽  
Callegaro ◽  
Albatici

Visual quality is an important component of indoor environment quality and greatly affects inhabitants’ perception of the living space. Nevertheless, the lighting design of residential buildings is usually underestimated by both designers and standards. This paper presents an integrated index for evaluating the visual quality of an indoor environment in residential buildings. The main parameters considered are daylight access, probability of glare from daylight and electric illumination, maintained illuminance, and color temperature. These aspects are evaluated throughout a whole year using a fixed set of metrics and are combined using relative weights. It was decided to also consider qualitative parameters in order to give more importance to some psychological aspects of visual comfort. Finally, the building visual quality index is obtained by a weighted average of the results of each room with the addition of the qualitative parameters. The applicability of the index was tested through the simulation of a dwelling that will be built and monitored in the context of the Comfort for Sustainable Buildings in the Alps (CASA) research project. The building visual quality index proved to be useful during the design process, allowing for improvements in both electric illumination and daylight access through a comparison of different solutions. This study could represent a step towards the holistic evaluation of indoor environment quality.


2014 ◽  
Vol 66 (4) ◽  
pp. 73-80 ◽  
Author(s):  
Michał Koniarski ◽  
Bożena Matysiak

<p>The aim of this study was to analyze the physiological and morphological response of <em>Syringa meyeri </em>‘Palibin’ to different levels of irrigation and to evaluate regulated deficit irrigation (RDI) as a possible technique for saving water in nursery production and promoting of flowering. Plants were grown in 3 liter containers in an unheated greenhouse and were subjected to six irrigation treatments for 18 weeks from the be- ginning of June to mid-October 2011. A drip irrigation system was used. Irrigation treatments were established on the basis of evapotranspiration (ETp). Three constant irrigation treatments were used: 1) 1 ETp; 2) 0.75 ETp; 3) 0.5 ETp, while the other three with irrigation varying between phases were as follows: 4) 1–0.5–1; 5) 1–0.25–1; and 6) 0.5–1–0.5 ETp. The 0.75 ETp and 0.5 ETp irrigation regimes adversely affected the growth and visual quality index of plants as well as they resulted in reduced leaf conductance, transpiration, maximum quantum efficiency of photosystem II (Fv/Fm) and CCI (chlorophyll content index). Plants grown under the 1–0.5–1 ETp regime had the same morphological parameters as plants grown under the 0.5 ETp treatment. A further reduction of water quantity supplied to plants in the 1–0.25–1 ETp regime resulted in further deterioration of the visual quality index of plants. In this study, the quality index of plants exposed to 0.5–1–0.5 ETp was similar to control plants (1 ETp). These plants were lower, more compact, and had smaller leaves than control plants. The irrigation regimes imposed in this study had no significant effect on the number of floral buds formed in relation to the control regime, except for 1–0.25–1 ETp where this number decreased.</p>


2017 ◽  
Vol 3 (2) ◽  
pp. 19-24
Author(s):  
Syahgita Soma Hidayat ◽  
Fourry Handoko ◽  
Dimas Indra Laksmana

Dalam proses perbaikan terus menerus peran dari sumber daya manusia sangatlah penting, setiap individu/karyawan harus menyadari pentingnya kualitas produk, sehingga setiap karyawan tersebut harus mempunyai rasa kepemilikan terhadap kualitas (Quality Ownership). Terkait Quality Ownership tersebut, pengukuran terhadap nilai dari Visual Quality Index (VQI) digunakan sebagai peringatan bagi perusahaan untuk melakukan evaluasi terhadap kualitas baik proses maupun produk. Pada penelitian peningkatan ini Quality Ownership diukur dengan metode Continuous Improvement (PDCA) melalui VQI yang terintegrasi dalam metode A3 Problem Solving dan Failure Mode and Effects Analysis (FMEA), tahap pertama adalah melakukan brainstorming dengan beberapa orang yang berperan dalam proses produksi dengan metode 5 why yang disusun dalam tree diagram analysis untuk mencari akar permasalahan, dilanjutkan dengan penggunaan tabel FMEA untuk mendapatkan nilai dari Risk Potensial Number (RPN), setelah mengetahui nilai dari RPN kemudian adalah membuat countermeasure dari permasalahan dan membuat jadwal perbaikan, tahap selanjutnya adalah menerapkan dan memonitoring proses dengan cara melakukan pengamatan menggunakan nilai dari VQI. Peningkatan Quality Ownership dapat dilihat dari perubahan nilai VQI yang semula di atas 200 dari rata-rata turun menjadi 193 dan konsisten di bawah angka 200, hal tersebut menunjukkan bahwa terjadi pengendalian kualitas dalam proses produksi dengan kata lain adalah terjadi peningkatan Quality Ownership dalam perilaku karyawan dalam bekerja.


2015 ◽  
Vol 85 (3-4) ◽  
pp. 202-210 ◽  
Author(s):  
Ivona Višekruna ◽  
Ivana Rumbak ◽  
Ivana Rumora Samarin ◽  
Irena Keser ◽  
Jasmina Ranilović

Abstract. Results of epidemiologic studies and clinical trials have shown that subjects following the Mediterranean diet had lower inflammatory markers such as homocysteine (Hcy). Therefore, the aim of this cross-sectional study was to assess female diet quality with the Mediterranean diet quality index (MDQI) and to determine the correlation between MDQI, homocysteine, folate and vitamin B12 levels in the blood. The study participants were 237 apparently healthy women (96 of reproductive age and 141 postmenopausal) between 25 and 93 years. For each participant, 24-hour dietary recalls for 3 days were collected, MDQI was calculated, and plasma Hcy, serum and erythrocyte folate and vitamin B12 levels were analysed. Total MDQI ranged from 8 to 10 points, which represented a medium-poor diet for the subjects. The strength of correlation using biomarkers, regardless of group type, age, gender and other measured parameters, was ranked from best (0.11) to worst (0.52) for olive oil, fish, fruits and vegetables, grains, and meat, in this order. Hcy levels showed the best response among all markers across all groups and food types. Our study shows significant differences between variables of the MDQI and Hcy levels compared to levels of folate and vitamin B12 in participants with medium-poor diet quality, as evaluated according to MDQI scores.


2020 ◽  
Vol 21 (1) ◽  
pp. 22-55
Author(s):  
Bartosz Czepil

The objective of this paper is an attempt to explain the determinants of the lowest governance quality level in one of the communes of the Opolskie Province, Poland. The first stage of the research consisted in developing a commune-level governance quality index in order to measure the quality of governance in the 60 communes of the Opolskie Province. Subsequently, the commune with the lowest score in the index was qualified for the second stage of the research which was based on the extreme case method. The major conclusion from the research is that the commune leader's governance style which allowed him to hold on to power for many terms of office was responsible for generating low governance quality. Furthermore, the low quality of governance was not only the effect of the governance style but also the strategy aimed at remaining in the commune leader office for many terms.


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