scholarly journals The effectiveness of dayligting through the toplighting design in large-volume building models

2021 ◽  
Vol 6 (2) ◽  
pp. 223-234
Author(s):  
Ariani Mandala ◽  
E. B. Handoko Sutanto ◽  
Amirani Ritva Santoso
Keyword(s):  
Experimental Research ◽  
Large Volume ◽  
Research Method ◽  
Distribution Patterns ◽  
Building Energy ◽  
Building Models ◽  
Energy Needs ◽  
Roof Area ◽  
Standard Value ◽  
Coefficient Of Uniformity

The utilization of daylighting as an effort to reduce the usage of building energy needs to be optimized. This is because, low-rise buildings with large volumes require specific strategies for proper light distribution throughout the space. Hence, this study aims to explore and compare the effectiveness of daylighting in the openings design of skylight, roof monitor, and sawtooth in large-volume buildings in Bandung. The effectiveness is assessed by examining lighting performance based on distribution patterns, the value of Daylight Factor (DF), and the Coefficient of Uniformity (CU). Experimental research method with simulation program known as Velux Daylight Visualizer 3.0 is used to present and analyze the lighting data. The results showed that the type, position (openings' height and distance), as well as the opening direction affected the distribution patterns and daylighting performance. Based on the simulation, the skylight opening is the most effective in meeting the standard value of Daylight Factor (> 2%) and Coefficient of Uniformity (CU min. 0.3 and DF min. 0.8%). Thus, space and openings model with a percentage roof area of 16.3% in the simulation can be used as a reference for large-volume buildings because, it meets the requirements of Daylight Factor value and sufficient Coefficient of Uniformity.  

scholarly journals A New Tool for Building Energy Optimization: First Round of Successful Dynamic Model Simulations

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6429
Author(s):  
Giacomo Chiesa ◽  
Francesca Fasano ◽  
Paolo Grasso
Keyword(s):  
Weather Conditions ◽  
Building Energy ◽  
Model Verification ◽  
Sensor Data ◽  
Net Energy ◽  
Dynamic Simulations ◽  
Energy Technologies ◽  
Building Models ◽  
Energy Needs ◽  
Building Energy Optimization

Several tools and pieces of software support building energy modelling for optimization, certification and comparisons of different scenarios and usages. Nevertheless, the consistent rise in accessible computational power and the expansion of ICT are pushing the development of new software functionalities and tools able to support cross-disciplinary work on smart building optimization. This paper introduces a new platform (under development) that combines the EnergyPlus dynamic simulation tool with extra-functionalities and pre-defined usage scenarios based on automatic actions to manage massive simulations and correlation analyses. The tool’s utility was tested in three experiments, with goals that we consider to be fundamental requirements: comparing simple retrofit actions to reduce net energy needs; analyzing the free-running potential of a demo building and the impacts of different low-energy technologies in terms of increasing thermal comfort (shading and ventilative cooling); and comparing measured sensor data indicators with simulated ones under real weather conditions for model verification. The results demonstrate the ability of the tool to automatically generate hundreds of EnergyPlus input building models by acting on building geometry; we focused on the most common uses for parametric dynamic simulations. Additionally, the way in which the tool combines the automatic modification of the building’s design and the parallel launching of multiple simulations allows the labor to be reduced. The user can execute complex tasks without spending any time working with model editing software and aggregating the results from multiple simulations.

THE EFFECT OF PEER REVIEW STRATEGY ON THE STUDENTS’ ACHIEVEMENT IN WRITING DESCRIPTIVE PARAGRAPH

2015 ◽  
Vol 4 (2) ◽  
Author(s):  
Sri Agus Murniasih And I Wayan Dirgeyasa
Keyword(s):  
Peer Review ◽  
Experimental Research ◽  
Research Method ◽  
Alternative Hypothesis ◽  
Control Group ◽  
Post Test ◽  
Class Viii ◽  
And Control ◽  
Essay Test ◽  
Experimental Group

This study was conducted to know the effect of applying Peer Review Strategy on the students’ achievement in writing descriptive paragraph. It was conducted by using experimental research method. This research design was conducted pre-test, post test in experimental and control group. The population of this research was the eight (VIII) grade students of SMP IT IQRA’ Medan. The sample of this research was taken by lottery technique. They were in class VIII-1 by experimental group and the class VIII-2 by control group. The experimental group was taught by using Peer Review Strategy while the control group was given no treatment. The instrument used to collect the data was writing essay test. The data were analyzed by using t-test formula. The result showed that the value of t-observed was higher than the value of t-table. (3,55 > 2,05 (a = 0.05)) with the degree of freedom (df) = 28. It means that there was a significant effect of applying Peer Review Strategy on the students’ achievement in writing descriptive paragraph. So, the alternative hypothesis (Ha) was accepted.

Are Hotel Guests Altruistic? How Positive Review Disconfirmation Affects Consumers’ Online Review Behavior

2021 ◽  
pp. 109634802110303
Author(s):  
Hengyun Li ◽  
Fang Meng ◽  
Simon Hudson
Keyword(s):  
Social Influence ◽  
Experimental Research ◽  
Research Method ◽  
Online Reviews ◽  
Positive Deviance ◽  
Online Review ◽  
Altruistic Motivation ◽  
Prior Review ◽  
Concern For Others ◽  
Post Online

The research aims to examine how positive review disconfirmation (i.e., a positive deviance between a hotel consumer’s poststay evaluation and the average review rating by prior consumers) affects subsequent consumers’ willingness to post online reviews and their own review ratings. By employing an experimental research method, this study reveals that positive review disconfirmation increases hotel guests’ willingness to post online reviews, and increases their online review ratings through the mechanism of concern for others, demonstrating an act of altruism. In addition, comparatively the positive review disconfirmation effects are stronger when the variance of prior review ratings is smaller. This study enhances the online review social influence literature, and the consumer’s altruistic motivation of posting online reviews.

scholarly journals Validity of a frustration-induction procedure

2007 ◽  
Vol 30 (1) ◽  
pp. 47-49 ◽  
Author(s):  
Elaine Henna ◽  
Monica L Zilberman ◽  
Valentim Gentil ◽  
Clarice Gorenstein
Keyword(s):  
Visual Analogue Scale ◽  
Experimental Research ◽  
Research Method ◽  
Analogue Scale ◽  
Experimental Studies ◽  
Normal Subjects ◽  
Induction Procedure ◽  
Overt Behavior ◽  
Before And After

OBJECTIVE: To test a reliable and easily administered frustration-induction procedure for experimental research. METHOD: One hundred volunteers (81 women, mean age ± SD 34.2 ± 8 years) physically and psychiatrically healthy submitted to the frustration induction procedure were prevented from reaching reward level scores. Subjective aggressiveness feelings related to frustration were self-rated in a 13-item visual analogue scale before and after the procedure. RESULTS: Significant increases in aggressiveness-related feelings were detected in 12 of the 13 items. This was consistent with the observed overt behavior of the subjects during the task. CONCLUSIONS: The frustration-induction procedure is a simple, easy to administer frustration-induction procedure that can be used in experimental studies in normal subjects.

scholarly journals The Influence of Storytelling on EFL Students Motivation in Speaking Practice in SMPN 03 Bengkulu Tengah

2021 ◽  
Vol 1 (4) ◽  
pp. 470-477
Author(s):  
Sri Noprianti ◽  
Ali Akbarjono ◽  
Feny Martina
Keyword(s):  
Experimental Research ◽  
Driving Force ◽  
Research Method ◽  
Eighth Grade ◽  
Control Group ◽  
Motivation To Learn ◽  
Significant Difference ◽  
Quasi Experimental ◽  
Efl Students ◽  
Class Viii

Based on the explanation of the theory by Gardner the state is motivation comes from within a person as a driving force to achieve goals for more advanced change. This study aims to determine how enthusiastic student's Eighth grade in the SMPN 03 Bengkulu Tengah are in learning English, especially speaking English. Researchers used a quasi-experimental research method, namely a control group posttest only design which showed a significant difference between 74, 92%, and 61.96% of the experimental class in the control class. From this hypothesis, the researcher obtained a comparison of the experimental class in the treatment using the storytelling method of 4.34% and the control class with the narrative picture method of 3.58%. So the researcher can conclude that there is a significant difference between the two methods with or without the use of treatment compared to the motivation to learn English in class VIII students at SMPN 03 Bengkulu Tengah.

scholarly journals Pengaruh Jenis Pelarut Terhadap Nilai Sun Protection Factor Maserat Daun Kelor

2019 ◽  
Vol 1 (1) ◽  
pp. 9-13
Author(s):  
Venny Diah Ningsih ◽  
Isma Oktadiana
Keyword(s):  
Antioxidant Activity ◽  
Experimental Research ◽  
Research Method ◽  
Descriptive Analysis ◽  
Sun Protection ◽  
Protection Factor ◽  
Analysis Design ◽  
Sun Protection Factor

Moringa leaves are one part of the plant which has many health properties one of which is an antioxidant. One of the content of Moringa leaves which contains antioxidant activity is quercetin. Quercetin Is polar and insoluble in air. An experimental research method with a descriptive analysis design, starting with making Moringa leaf maserat, screening, and testing the SPF value, using a UV-Vis spectrophotometer. The purpose of this research was to find out the type of solvent against the SPF value of Moringa leaf maserat. Based on the experiments that have been carried out the methanol (6.75) solvent elds a higher SPF value compared to ethanol (5.32).   Keyword: Moringa Leaf, Solvent, SPF. ABSTRAK   Daun kelor merupakan salah satu bagian tanaman yang memiki banyak khasiat untuk kesehatan salah satunya ialah sebagai antioksidan. Salah satu kandungan daun kelor yang memiliki aktivitas sebagai antioksidan aialah quercetin. Quercetin Bersifat polar dan tidak larut dalam air. Metode penelitian eksperimental dengan desain analisis deskriptif, dimulai dengan pembuatan maserat daun keor, penyaringan, dan pengujian Nilai SPF, menggunakan Spektrofotometer UV-Vis. Tujuan dari penelitian ini ialah untuk mengetahui pengaruh jenis pelarut terhadap nilai SPF maserat daun kelor. Berdasarkan percobaan yang telah dilakukan didaptkan hasil bahawa pelarut methanol (6,75) memberikan nilai SPF lebih tinggi dibandingkan dengan dengan pelarut etanol (5.32).   Kata Kunci : Daun Kelor, Pelarut, SPF

Think and Perform Tank

2020 ◽  
Author(s):  
Oliver Schürer
Keyword(s):  
Experimental Research ◽  
Research Group ◽  
Research Method ◽  
Social Robotics ◽  
Transdisciplinary Research ◽  
Wizard Of Oz ◽  
Michel Serres ◽  
Living Lab ◽  
First Time

At this workshop, the transdisciplinary research group H.A.U.S. presented a new experimental research method (TPT) for the first time. Classic methods like “Living Lab” and “Wizard of Oz” are widely used and well established in social robotics research, but they imply explicit limits and raise methodological concerns. The epistemology of TPT’s performances draws on concepts related to Hans-Jörg Rheinberger’s “epistemic thing” and Michel Serres’ “quasi-object”. These theoretical underpinnings are discussed, alongside limitations of TPT and benefits of this approach compared to classic methods.

Research on the Integration of Energy Economic Model and Urban Energy Model

2021 ◽  
Vol 3 (6) ◽  
pp. 15-17
Author(s):  
Yaozhong Zu ◽  
Keyword(s):  
Greenhouse Gas ◽  
Building Energy ◽  
Urban Environments ◽  
Interdisciplinary Studies ◽  
Energy Models ◽  
Energy Needs ◽  
Urban Energy ◽  
Energy Economic Model ◽  
High Level ◽  
Building Level

In order to explore the strategy on urban energy and reduction of greenhouse gas, a large number of energy models have been developed by interdisciplinary studies. Mixed patterns are particularly useful as a result that they incorporate more dynamics to simulate the relevant high-level decisions and the provided actual results by building-level factors. However, space and spatial energy models are not often linked, which ignores the spatial impact of energy and emission policies in urban environments. The application of this method shows how it can be used to assess how different policies interact with other and affect building energy needs and greenhouse gas emissions.

scholarly journals Experimental research method when developing a mathematical model for calculating cutting speed in the course of turning steels with a coated tool

2019 ◽  
Vol 298 ◽  
pp. 00134
Author(s):  
Zhanna Tikhonova ◽  
Evgeniy Frolov ◽  
Dmitriy Krainev ◽  
Alexander Plotnikov
Keyword(s):  
Mathematical Model ◽  
Experimental Study ◽  
Experimental Research ◽  
Research Method ◽  
Cutting Speed ◽  
Coated Tools ◽  
Coated Tool ◽  
Cutting Zone

The article is devoted to the description of the experimental research method when developing a mathematical model for calculating the cutting speed based on information from the cutting zone obtained during the test run in the process of turning using steel coated tools as an example. This paper also presents the results of an experimental study which prove the effectiveness of applying the obtained mathematical dependence.

scholarly journals A Study on Energy and Cost Efficiency for Existing Hotel Buildings in Turkey

2019 ◽  
Vol 111 ◽  
pp. 03037
Author(s):  
Merve Atmaca ◽  
Zerrin Yýlmaz
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Cost Efficiency ◽  
Building Energy ◽  
Energy Performance ◽  
Insulation Material ◽  
Negative Effects ◽  
Energy Needs ◽  
Global Cost ◽  
Optimum Solution

In Turkey, according to TUİK Sectoral Energy Consumption Statistics (2006), the hotel buildings with the highest share, constitute 35% of the total building energy consumption. Energy needs and consumption behaviours differ according to the typology of the building. Energy Performance of Buildings Directive (EPBD) has been adapted to the conditions of Turkey to increase energy and cost efficiency, to reduce the environmental and economic negative effects. The energy consumption and the global cost were investigated under different conditions in an existing hotel building. The paper is unique in its ability to deliver optimum solution through comparison by evaluating energy and cost efficiency at the same time considering sectoral, climatic, technological and economic national conditions when the literature research detailed in the present works about the problem is evaluated in detail. All findings have been compared simultaneously under different climate regions of seasonal and yearly working conditions of selected test hotel to obtain the energy and cost efficiency. Among the proposed improvement scenarios, the optimum scenario is determined in terms of cost and energy efficiency in S18 which has the highest energy efficiency. In this case, both insulation material type and thickness as well as glass type can be bent and through multiple measures can be achieved by 25.7% improvement for energy efficiency.

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