scholarly journals Advanced Greenhouse Horticulture: New Technologies and Cultivation Practices

Horticulturae ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Athanasios Koukounaras
Keyword(s):  
New Technologies ◽  
Light Emitting Diode ◽  
Dye Sensitized Solar Cells ◽  
Original Research ◽  
Brewery Wastewater ◽  
Cultivation Practices ◽  
Substrate Properties ◽  
Greenhouse Horticulture ◽  
Negative Impacts ◽  
The Impact

Greenhouse horticulture is one of the most intensive agricultural systems, with the advantages of environmental parameter control (temperature, light, etc.), higher efficiency of resource utilization (water, fertilizers, etc.) and the use of advanced technologies (hydroponics, automation, etc.) for higher productivity, earliness, stability of production and better quality. On the other hand, climate change and the application of high inputs without suitable management could have negative impacts on the expansion of the greenhouse horticulture sector. This special issue gathers twelve papers: three reviews and nine of original research. There is one review that focuses on irrigation of greenhouse crops, while a second surveys the effects of biochar on container substrate properties and plant growth. A third review examines the impact of light quality on plant–microbe interactions, especially non-phototrophic organisms. The research papers report both the use of new technologies as well as advanced cultivation practices. In particular, new technologies are presented such as dye-sensitized solar cells for the glass cover of a greenhouse, automation for water and nitrogen deficit stress detection in soilless tomato crops based on spectral indices, light-emitting diode (LED) lighting and gibberellic acid supplementation on potted ornamentals, the integration of brewery wastewater treatment through anaerobic digestion with substrate-based soilless agriculture, and application of diatomaceous earth as a silica supplement on potted ornamentals. Research studies about cultivation practices are presented comparing different systems (organic-conventional, aeroponic-nutrient film technique (NFT)-substrate culture), quantitative criteria for determining the quality of grafted seedlings, and of wild species as alternative crops for cultivation.

scholarly journals Using technology in teaching English at the S.S.C. level

2018 ◽  
Vol 23 (1-2) ◽  
pp. 142-152
Author(s):  
Sifat Ullah ◽  
Quazi Farzana
Keyword(s):  
Mixed Methods Research ◽  
Teaching And Learning ◽  
English Language ◽  
New Technologies ◽  
Structured Interview ◽  
Teaching English ◽  
Use Of Technology ◽  
Technology In Teaching ◽  
Negative Impacts ◽  
The Impact

In this an era of technology, new technologies particularly computer, multimedia, mobile phone and the internet offer possibilities for overcoming geographical and cost barriers in teaching and learning. This study attempts to trace the use of technology in teaching English at the S.S.C. (Secondary School Certificate) level in Bangladesh. It also focuses on the impact of using technology in teaching and learning English. Eight teachers and 60 students from four private schools in Dhaka city were selected to survey the use of technology in teaching the English Language. The researchers employed the mixed methods research to carry out the study where two sets of questionnaires for the teachers and the students and a semi-structured interview only for the teachers were used to collect data. The findings showed that using technology in teaching has both the positive and the negative impacts. Teachers like to use technology in their classroom but limited time and lack of training and technical support from the authority hamper the mode of teaching. The students also feel comfortable in technology affiliated classroom, but sometimes they fail to catch the concept clearly as they become inattentive due to the lack of proper engagement of the teachers in the classroom.

scholarly journals The Unknown Potential of Blockchain for Sustainable Supply Chains

2020 ◽  
Vol 12 (22) ◽  
pp. 9400
Author(s):  
Vincenzo Varriale ◽  
Antonello Cammarano ◽  
Francesca Michelino ◽  
Mauro Caputo
Keyword(s):  
Supply Chains ◽  
New Technologies ◽  
Three Dimensions ◽  
Sustainable Supply Chains ◽  
Current State ◽  
Development Agenda ◽  
Managerial Implications ◽  
Negative Impacts ◽  
The One ◽  
The Impact

The growing attention to emerging technologies has raised several doubts regarding the sustainability aspects. Among the new technologies, blockchain has laid the foundations for a revolution in the financial field but also in the energy, tourism, medical, industrial and supply chains sectors. Through a systematic literature review, 37 documents were analyzed to describe the sustainable aspects generated using blockchain in supply chains. Therefore, the results achieved provide two levels of analysis. The former highlights the impact of the adoption of blockchain in supply chains based on the three dimensions of sustainability: environmental, economic and social. The latter shows the positive and negative impacts of each form of sustainability. The purpose of the work is to summarize the current state of the art in order to propose a future development agenda based on the need to simulate and define a measurability for each dimension of sustainability. Finally, the study provides a broad overview of practical and managerial implications for entrepreneurs and researchers. On the one hand, the work shows how the use of blockchain improves the profits and reputation of companies. On the other hand, it highlights several research gaps to be investigated and considered by researchers.

A laboratory assessment of the impact of brewery wastewater discharge on sulfide and methane production in a sewer

2011 ◽  
Vol 64 (8) ◽  
pp. 1614-1619 ◽  
Author(s):  
Gatut Sudarjanto ◽  
Keshab R. Sharma ◽  
Oriol Gutierrez ◽  
Zhiguo Yuan
Keyword(s):  
Production Rate ◽  
Methane Production ◽  
Domestic Wastewater ◽  
Wastewater Discharge ◽  
Brewery Wastewater ◽  
Laboratory Assessment ◽  
Experimental Reactor ◽  
Ch4 Production ◽  
Negative Impacts ◽  
The Impact

The impact of brewery wastewater discharge on sulfide and methane production in a sewer was assessed. Experiments were carried out on laboratory scale sewer reactors consisting of both an experimental and a control reactor. The control reactor was intermittently fed with real fresh sewage while the experimental reactor was fed with a mixture of brewery and domestic wastewater at two different proportions (10 and 25% v/v). 10% v/v discharge of brewery wastewater increased the H2S and CH4 production rates in the sewer reactor by 40% and 30%, respectively. When the brewery wastewater fraction was increased to 25% v/v, the H2S production rate of the experimental reactor decreased to the level of the control reactor. In contrast, the CH4 production rate maintained at a level that was 30% higher than that in the control reactor. These results indicate that the discharge of brewery wastewater into sewers can give negative impacts in relation to odour and corrosion management of the systems and will increase the greenhouse gas emissions from sewers. The study also reveals that the impact of trade waste on the biological reactions in sewers is complex, and requires careful experimental assessment in each case.

scholarly journals COVID-19 Impacts on Teaching and Learning: A Collaborative Autoethnography by Two Higher Education Lecturers

2021 ◽  
Vol 6 ◽  
Author(s):  
Kathleen Ann Godber ◽  
Denise Robyn Atkins
Keyword(s):  
Higher Education ◽  
Reflective Practice ◽  
Teaching And Learning ◽  
New Technologies ◽  
Personal Narratives ◽  
Critical Knowledge ◽  
Depth Analysis ◽  
Negative Impacts ◽  
Systems Framework ◽  
The Impact

The phenomenon of the Covid-19 lockdown in New Zealand during 2020 enabled two Higher Education (HE) lecturers to reflect on grappling with new technologies, changes in lifestyle and livelihoods, and the impact that social isolation had on Bachelor of Sport and Recreation (BSR) students as they shifted to emergency “remote” teaching and learning. This paper presents personal narratives, authored collaboratively by lecturers Anna and Hana (pseudonyms), engaging with a socio-ecological systems framework. The systems framework presents a layered, multi-faceted approach to reveal the complexity of the impacts of Covid-19 on HE teaching and learning. In-depth analysis of the microsystems, mesosystems, and macrosystems making up their systems framework, serve to highlight specifically how Anna and Hana interpreted their own and their university students’ responses to the unprecedented measures imposed on their lifestyle (home), livelihood (employment), and HE experience (online learning). By applying an autoethnographic methodology, this paper acknowledges and celebrates the lecturers’ subjectivity, emotionality, and influence on the presented research. As educators, their critical self-reflections are authentic and timely, expressing key concerns and considerations, while searching for optimal solutions to deliver equal and equitable learning opportunities for all students. A unique characteristic of this phenomenon was the inability (due to COVID-19 restrictions) of students who learn through practical contexts, to enact kinesthetically in a meaningful manner, and the subsequent implications on their learning. This paper presents a snippet of the lecturers’ reflective practice, co-constructed from recollections, memories, and anecdotal evidence, against a backdrop of current Covid-19 research on the effects of the pandemic, on teaching and learning globally. Whilst this paper sheds light on the experiences of two HE lecturers during the COVID-19 lockdown, a collection and analysis of “student” voice, is recommended. This paper concludes that a collaborative autoethnographic approach during exceptional circumstances, such as natural disasters, pandemics, and other disruptive situations, provides an opportunity for professional self-observation and self-reflective practice that is mutually beneficial, and empowering. These insights provide shared critical knowledge to sustain achievement while averting negative impacts, for students and lecturers alike.

scholarly journals The ups and downs of traps: environmental impacts, entanglement, mitigation, and the future of trap fishing for crustaceans and fish

2020 ◽  
Author(s):  
Bradley G Stevens
Keyword(s):  
Environmental Impacts ◽  
Marine Environment ◽  
Submerged Aquatic Vegetation ◽  
Aquatic Vegetation ◽  
New Technologies ◽  
Benthic Habitats ◽  
The Future ◽  
Order Of Magnitude ◽  
Negative Impacts ◽  
The Impact

Abstract Fishing has many types of impacts on the marine environment. Degradation of seafloor habitats by trawling has been widely studied, along with bycatch mortality, and ghost fishing by traps. Traps or pots are commonly used for catching crustaceans and other organisms, but little research has been conducted on the environmental impacts of trap fishing. Trap fishing causes direct impacts on benthic habitats during setting and retrieval, including dragging along the seafloor, which can lead to the damage and destruction of habitat components such as corals, sponges, and other epifauna. Lines connecting multiple traps increase the overall footprint and cause additional damage. Lost traps and debris can cause damage to coral, submerged aquatic vegetation, and epifauna, especially if moved by storms. Although the trap footprint is small, movement of the trap can expand the impact footprint by an order of magnitude. Trap lines cause whale entanglement and death, and there is much interest in reducing the number of vertical lines as well as their potential for entanglement. New technologies for deploying, locating, and recovering traps are now being developed. The future of trap fisheries will require research on new ways to reduce their negative impacts on benthic and pelagic resources.

Is technological change a devourer of jobs?

2017 ◽  
pp. 111-140 ◽  
Author(s):  
R. Kapeliushnikov
Keyword(s):  
Technological Change ◽  
Critical Analysis ◽  
New Technologies ◽  
Employment Growth ◽  
Foreseeable Future ◽  
Employment Effects ◽  
Technological Unemployment ◽  
Micro Level ◽  
Task Sets ◽  
The Impact

The paper provides a critical analysis of the idea of technological unemployment. The overview of the existing literature on the employment effects of technological change shows that on the micro-level there exists strong and positive relationship between innovations and employment growth in firms; on the sectoral level this correlation becomes ambiguous; on the macro-level the impact of new technologies seems to be positive or neutral. This implies that fears of explosive growth of technological unemployment in the foreseeable future are exaggerated. Our analysis further suggests that new technologies affect mostly the structure of employment rather than its level. Additionally we argue that automation and digitalisation would change mostly task sets within particular occupations rather than distribution of workers by occupations.

The impact of winter wheat cultivation practices on the quality of soil and grain

2006 ◽  
Vol 34 (1) ◽  
pp. 649-651
Author(s):  
D. Šileikiene ◽  
V. Rutkoviene ◽  
J. Pekarskas
Keyword(s):  
Winter Wheat ◽  
Wheat Cultivation ◽  
Cultivation Practices ◽  
The Impact

FAKTOR DETERMINAN PENYALURAN KREDIT BANK PERSERO

2018 ◽  
Vol 23 (1) ◽  
pp. 60-71
Author(s):  
Wigiyanti Masodah
Keyword(s):  
Interest Rate ◽  
Linear Regression ◽  
Interest Rates ◽  
Regression Models ◽  
Linear Regression Models ◽  
Negative Impacts ◽  
Main Activity ◽  
The Impact ◽  
The Given ◽  
Multiple Linear Regression Models

Offering credit is the main activity of a Bank. There are some considerations when a bank offers credit, that includes Interest Rates, Inflation, and NPL. This study aims to find out the impact of Variable Interest Rates, Inflation variables and NPL variables on credit disbursed. The object in this study is state-owned banks. The method of analysis in this study uses multiple linear regression models. The results of the study have shown that Interest Rates and NPL gave some negative impacts on the given credit. Meanwhile, Inflation variable does not have a significant effect on credit given. Keywords: Interest Rate, Inflation, NPL, offered Credit.

Sign in / Sign up

Export Citation Format

Share Document