scholarly journals Zero Net Energy Test House

2011 ◽  
Vol 6 (2) ◽  
pp. 36-48 ◽  
Author(s):  
Timothy L Hemsath ◽  
James D Goedert ◽  
Avery D Schwer ◽  
Yong K Cho
Keyword(s):  
Net Energy ◽  
Solar Panels ◽  
Technological Advances ◽  
Test House ◽  
Zero Net Energy ◽  
New Construction ◽  
Research And Education ◽  
K 12 ◽  
The Impact ◽  
Industry Professionals

This paper describes the first phase of a residential research program to reduce the impact of new construction on the environment through research and education using a Zero Net Energy Test House as a framework. Containing four bedrooms, three and a half baths, the 1,800 square foot house, 1,000 square foot basement, is located in Omaha, Nebraska. It is being used to validate several research projects and provides a platform for applications research of a number of technological advances. Laminated photovoltaic solar panels, a wind turbine, and an occupant monitoring energy control system are some of the sustainable design innovations incorporated. Sustainable features are described that detail the application for LEED Platinum certification. Integrated into several University of Nebraska courses, the house has reached more than 200 students in the past year. Interdisciplinary teaching has involved design, construction, research, monitoring and energy analysis. Education opportunities have reached K–12 students, industry professionals, and public through tours and presentations.

The Digital Divide and K-12 Student Computer Use

10.28945/2926 ◽  
2005 ◽  
Author(s):  
James N. Morgan ◽  
Craig A. VanLengen
Keyword(s):  
Digital Divide ◽  
Computer Use ◽  
Census Data ◽  
Internet Access ◽  
Demographic Characteristics ◽  
The Internet ◽  
Substantial Impact ◽  
Limited Basis ◽  
K 12 ◽  
The Impact

The divide between those who have computer and Internet access and those who do not appears to be narrowing, however overall statistics may be misleading. Measures of computer availability in schools often include cases where computers are only available for administration or are available only on a very limited basis (Gootman, 2004). Access to a computer and the Internet outside of school helps to reinforce student learning and emphasize the importance of using technology. Recent U.S. statistics indicate that ethnic background and other demographic characteristics still have substantial impact on the availability and use of computers by students outside of the classroom. This paper examines recent census data to determine the impact of the household on student computer use outside of the classroom. Encouragingly, the findings of this study suggest that use of a computer at school substantially increases the chance that a student will use a computer outside of class. Additionally, this study suggests that computer use outside of the classroom is positively and significantly impacted by being in a household with adults who either use a computer at work or work in an industry where computers are extensively used.

The Impact of Green Labels on U.S. Hotel Net Operating Income: Operating Statements Analyses

2019 ◽  
Vol 11 (1) ◽  
pp. 156-173
Author(s):  
Spenser Robinson ◽  
A.J. Singh
Keyword(s):  
Environmental Design ◽  
Green Buildings ◽  
Small Sample ◽  
Sample Survey ◽  
Data Set ◽  
Operating Income ◽  
Energy Star ◽  
The Impact ◽  
Industry Professionals

This paper shows Leadership in Energy and Environmental Design (LEED) certified hospitality properties exhibit increased expenses and earn lower net operating income (NOI) than non-certified buildings. ENERGY STAR certified properties demonstrate lower overall expenses than non-certified buildings with statistically neutral NOI effects. Using a custom sample of all green buildings and their competitive data set as of 2013 provided by Smith Travel Research (STR), the paper documents potential reasons for this result including increased operational expenses, potential confusion with certified and registered LEED projects in the data, and qualitative input. The qualitative input comes from a small sample survey of five industry professionals. The paper provides one of the only analyses on operating efficiencies with LEED and ENERGY STAR hospitality properties.

scholarly journals Effects of agronomic factors on yield and quality of whole corn plants and the impact of feeding high concentrations of corn silage in diets containing distillers grains to finishing cattle1

2017 ◽  
Vol 1 (3) ◽  
pp. 367-381 ◽  
Author(s):  
D. B. Burken ◽  
B. L. Nuttelman ◽  
J. L. Gramkow ◽  
A. L. McGee ◽  
K. M. Sudbeck ◽  
...  
Keyword(s):  
Corn Silage ◽  
Distillers Grains ◽  
Net Energy ◽  
Harvest Time ◽  
Marbling Score ◽  
Finishing Diets ◽  
Plant Yields ◽  
Corn Plants ◽  
The Impact ◽  
Corn Grain

Abstract Corn plants were sampled over 2 consecutive years to assess the effects of corn hybrid maturity class, plant population, and harvest time on whole corn plant quality and yield in Nebraska. A finishing experiment evaluated the substitution of corn with corn silage in diets with corn modified distillers grains with solubles (MDGS). The first 2 harvest dates were at the mid- and late-silage harvest times whereas the final harvest was at the grain harvest stage of plant maturity. Whole plant yields increased as harvest time progressed (yr 1 quadratic P < 0.01; yr 2 linear P < 0.01). However, differences in TDN concentration in both years were quite minimal across harvest time, because grain percentage increased but residue NDF in-situ disappearance decreased as harvest time was delayed. In the finishing experiment, as corn silage inclusion increased from 15 to 55% (DM basis) by replacing dry rolled and high moisture corn grain with corn silage in diets containing 40% MDGS, DMI, ADG, and G:F linearly decreased (P ≤ 0.01), with the steers on the 15% corn silage treatment being 1.5%, 5.0%, and 7.7% more efficient than steers on treatments containing 30, 45, and 55% corn silage, respectively. Calculated dietary NEm and NEg decreased linearly as corn silage inclusion increased indicating that net energy values were greater for corn grain than for corn silage. In addition, dressing percentage decreased linearly (P < 0.01) as silage inclusion increased suggesting more fill as silage inclusion increases in diets. Cattle fed greater than 15% corn silage in finishing diets based on corn grain will gain slower and be slightly less efficient and likely require increased days to market at similar carcass fatness and size. When 30% silage was fed with 65% MDGS, DMI, and ADG were decreased (P < 0.01) compared to feeding 30% silage with 40% MDGS suggesting some benefit to including a proportion of corn in the diet. Conversely, when 45% silage was fed with 40% MDGS, ADG, and G:F were greater (P < 0.04) than when 45% silage was fed with just grain implying a greater energy value for MDGS than for corn grain. Substituting corn silage for corn grain in finishing diets decreased ADG and G:F which would increase days to finish to an equal carcass weight; however, in this experiment, increasing corn silage levels with MDGS present reduced carcass fat thickness without significantly decreasing marbling score.

Enrichment of hydrogen production from fruit waste biomass using ozonation assisted with citric acid

2021 ◽  
pp. 0734242X2110103
Author(s):  
Anbazhagan Sethupathy ◽  
Pushkar Kumar Pathak ◽  
Palani Sivashanmugam ◽  
Chelliah Arun ◽  
Jayakumar Rajesh banu ◽  
...  
Keyword(s):  
Citric Acid ◽  
Hydrogen Production ◽  
Suspended Solid ◽  
Net Energy ◽  
Waste Biomass ◽  
Acid Pretreatment ◽  
Disintegration Time ◽  
Fruit Waste ◽  
The Impact ◽  
Acid Dosage

In this study, the impact of ozonation abetted with the citric acid pretreatment (OZCAP) method on fruit waste was investigated for ameliorating hydrogen production. Initially, the ozonation pretreatment (OZP) method was performed by varying ozone (O3) dosage and disintegration time. At optimized conditions (O3 dosage (0.04 g/g suspended solid; SS) and disintegration time (40 minutes)), 17.6% of liquefied organics emancipate rate (LER) and 13.5% of SS reduction were perceived. Further augmenting LER of fruit waste, OZCAP method was proceeded by varying citric acid dosage and disintegration time at an optimized OZP dosage (0.04 g/g SS). A higher LER (24.4%) and SS reduction (19%) were described at an optimal citric acid dosage (0.03 g/g SS) and disintegration time (20 minutes). Then, the hydrogen production potential of OZCAP, OZP and raw fruit waste were evaluated in which OZCAP method exhibited a higher cumulative hydrogen production (30 mL/g volatile solids). Energy valuation reveals that OZCAP method exhibited a net energy of 3.7 kWh/kg of fruit waste.

Use of Emerging Conductive Materials for K-12 STEAM Outreach Activities and the Impact on Community Education Resilience

2020 ◽  
Author(s):  
Ashley Del Valle-Morales ◽  
Alejandro Aponte-Lugo ◽  
Jahannie Torres-Rodriguez ◽  
Eduardo I. Ortiz-Rivera
Keyword(s):  
Community Education ◽  
Conductive Materials ◽  
K 12 ◽  
The Impact

Role of BIM and energy simulation tools in designing zero-net energy homes

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Shahryar Habibi
Keyword(s):  
Energy Efficiency ◽  
Built Environment ◽  
Design Process ◽  
Simulation Software ◽  
Energy Simulation ◽  
Low Energy ◽  
Net Energy ◽  
Content Type ◽  
Zero Net Energy

Purpose The purpose of this study is to design a zero-energy home, which is known to be capable of balancing its own energy production and consumption close to zero. Development of low-energy homes and zero-net energy houses (ZEHs) is vital to move toward energy efficiency and sustainability in the built environment. To achieve zero or low energy targets in homes, it is essential to use the design process that minimizes the need for active mechanical systems. Design/methodology/approach The methodology discussed in this paper consists of an interfacing building information modeling (BIM) tool and a simulation software to determine the potential influence of phase change materials on designing zero-net energy homes. Findings BIM plays a key role in advancing methods for architects and designers to communicate through a common software platform, analyze energy performance through all stages of the design and construction process and make decisions for improving energy efficiency in the built environment. Originality/value This paper reviews the literature relevant to the role of BIM in helping energy simulation for the performance of residential homes to more advanced levels and in modeling the integrated design process of ZEHs.

Foreign Shipyard Coatings Benchmarking Study

2015 ◽  
Vol 31 (03) ◽  
pp. 201-208
Author(s):  
Raouf Kattan ◽  
Darren Broderick ◽  
Steve Cogswell ◽  
Judie Blakey ◽  
Peter Ault
Keyword(s):  
Time Management ◽  
Relative Increase ◽  
Coating Process ◽  
Labor Content ◽  
New Construction ◽  
The Impact ◽  
Environmental Burdens

U.S. yards have undertaken benchmarking studies under the auspices of the national Shipbuilding Program for many years (FMI 2001). However, little emphasis has been placed on the coating process. During that time, management of the coating process has increasingly become problematic at new construction, in particular as a result of the relative increase in labor content, the increased regulatory and environmental burdens, and the impact on the build schedule and strategy of what is often a bottleneck process.

Teaching students out of harm’s way

2018 ◽  
Vol 16 (3) ◽  
pp. 290-302
Author(s):  
Esther Charlotte Moon
Keyword(s):  
Technology Integration ◽  
School Districts ◽  
Digital Citizenship ◽  
Digital Environment ◽  
Content Type ◽  
Instructional Content ◽  
Device Integration ◽  
The Usa ◽  
K 12 ◽  
The Impact

Purpose The purpose of this paper is to demonstrate how changes in K-12 educational delivery methods in the USA impacts students as 1:1 device programs become a required tool for learning. This change produces gaps in knowledge and understanding of the digital environment and exposes minors to risk. Mandatory technology integration by school districts places the ethical responsibility on school districts to prepare students to use the digital environment to mitigate risk. Design/methodology/approach The author’s literature review focused on the impact of personal device integration in education on students. The author surveyed teachers in the district on what they perceived as risk to students accessing the digital environment and what they believe creates value in digital citizenship instructional content. The author also gathered information while serving on the school district technology steering committee and digital citizenship working group. Findings Mandatory 1:1 device programs used for learning provide unlimited access to the digital environment. This technology integration creates digital knowledge gaps in understanding among students and exposes them to risk or dangers such as loss of privacy, psychological harms and engaging in or being a victim of illegal online activities. School districts are responsible for providing a remedy to close this gap and mitigate risk by developing learning content resources for teachers. Social implications As 1:1 device programs continue to grow in school districts in the USA, it is essential for students to learn to apply protocols and understand norms of the digital world. Providing a digital citizenship curriculum in a format such as a Google Site will offer educators access to instructional content that teaches students to apply protocols, understand norms of the internet and social media and foster critical thinking to analyze power structures, biases and recognize manipulation online. Student must learn how to apply rules that challenge assumptions behind the digital content they see, and they must be able to identify and resolve digital practices and behaviors that are problematic, so they are prepared to participate in a digital society. Originality/value This perspective may be relevant to school districts contemplating personal device integration, providing insight into how 1:1 device use impacts students and develops an ethical position for creating digital citizenship resources for teachers.

scholarly journals Broadening the Impact of K–12 Science Education Collaborations in a Shifting Education Landscape

BioScience ◽  
2018 ◽  
Vol 68 (9) ◽  
pp. 706-714 ◽  
Author(s):  
Stephanie Bestelmeyer ◽  
Elizabeth Grace ◽  
Stephanie Haan-Amato ◽  
Ryan Pemberton ◽  
Kris Havstad
Keyword(s):  
Science Education ◽  
K 12 ◽  
The Impact
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