186 research outputs found
Analytical model for arbitrarily configured neighboring shallow geothermal installations in the presence of groundwater flow
No full textThis paper introduces an analytical model analyzing the effect of groundwater flow on heat transfer in an infinite conductive-convective porous domain representing shallow geothermal systems with arbitrarily configured cylindrical heat sources. The model is formulated based on the moving source concept and solved based on the spectral analysis method and the superposition principle. Compared to models based on the Green's function and the Laplace transform, the proposed spectral model has a simpler formulation, computationally efficient and easy to implement in computer codes. It can handle random time-dependent thermal loads and any arbitrarily configured grid distribution. The verification and numerical examples demonstrate the computational capabilities of the model, and show how the groundwater flow can play an important role in the thermal interaction between heat sources. They also feature how to make use of the direction of groundwater flow to avoid undesirable thermal interaction between neighboring installations, rapid depletion of energy sources and unfair mining of geothermal energy.Applied MechanicsReservoir Engineerin
Parameter identification algorithm for ground source heat pump systems
No full textThis paper presents a new parameter identification (PI) algorithm for estimating effective and detailed thermal parameters of ground source heat pump systems using data obtained from the well-known thermal response test. The PI comprises an iterative scheme coupling a semi-analytical forward model to an inverse model. The forward model is formulated based on the spectral element method to simulate transient 3D heat flow in ground source heat pump (GSHP) systems, and the inverse model is formulated based on the interior-point optimization method to minimize the system objective function. Compared to existing interpretation tools for the thermal response test, the proposed PI algorithm has several advanced features, including: it can handle fluctuating heat pump power and inlet temperatures; interpret data obtained from multiple heat injection or extraction signals; produce accurate backcalculation for short and long duration experiments; and handle multilayer systems. The PI algorithm is tested against synthesized data, using a wide range of random noise, and versus an available laboratory experiment. The computational results show that the PI algorithm is accurate, stable and exhibiting relatively high convergence rate.Applied Mechanic
Fieldwork Guidelines for Archaeology Officers
No full textThe identities of nations and countries depend on the culture, history, beliefs, faith and
religion of the people of those countries. Therefore, in order to express the identity and
personality of human beings and countries, we must go to history and historians, culture and
cultural figures, and knowledge and scholars of the relevant countries and people.
Therefore, to understand and document the history and culture of the country in systematic
way, these Guidelines for Archaeological Officers has been prepared so to undertake the
archaeological activities according to international standards. This book will highlight the legal
aspects of archaeological work in Afghanistan, archaeological survey, planning, budgeting,
restoration, conservation, protection of the excavated areas, drafting reports, and
documentation related issues. The author focused on the practical and systematic vision of
archaeological activities as the recent development in agricultural work, urban development
and illegal digging of the sites immensely destroyed the country rich archaeological heritage.
In these pages Dr. Luca M. Olivieri shares with young archaeological officers his experience in
survey, excavation, documentation, site protection, budgeting and legal frameworks. Based
on some best practice examples, this book plans to offer pragmatic assistance to readers, thus
encouraging them to focus on the various practical aspects of a scientific archaeological
fieldwork.
Dr. Anna Filigenzi, Dr. Massimo Vidale and Mrs. Livia Alberti contributed on very important
aspects of the manual. Mr. Ahmadzia Nawrang, Mr. Salim Wak and Mr. Fidah Mohammad
assisted in text correction and translation of Pashto and Dari languages. I sincerely appreciate
the efforts of all my colleagues from AIA who assisted in composing, designing and compiling
it in book form and I pray for more success.
I hope that with the publication of this valuable and extraordinary book, a service has been
made to the scientific and cultural community of the country. I am sure that the Archaeological
officers, students, professors and researchers in the field of archeology in Afghanistan will
definitely benefit from this book.
Noor Agha Noori
Director
Archaeology Institute of Afghanistan (AIA)
Kabul, December 202
Industrial symbiosis in emerging Economies: A system approach to study industrial symbiosis in industrial clusters
No full textEmerging economies produce 70-90% of the world’s steel, cement, and chemicals, which are essential for development. However, performance indicators such as carbon intensity and energy use per GDP reveal that industrial development trends in emerging economies are not sustainable. The ideal of industrial development that sustains and improves environmental and social structures has resulted in several scientific disciplines, one of which is industrial symbiosis (IS). Imitating natural ecosystems, IS aims to benefit from geographic proximity in industrial clusters for waste recovery and exchange between traditionally separate industries. The formation of IS results in a more sustainable production system by improving the material and energy efficiency of the whole cluster. Here, there is a need for a systematic approach that acknowledges the socio-technical complexity of clusters for IS implementation. This Ph.D. dissertation aimed to understand how industrial symbiosis (IS) shapes within the complex socio-technical structure of industrial clusters to improve their environmental and economic performance in the long term. The first requirement for IS emergence is the existence of technical and collaborative potential due to geographic proximity. Moreover, external factors also influence actors' behaviors in the cluster and, consequently, IS formation. Rules and regulations, on the one hand, and economic conditions, on the other hand, steer actors' decisions toward IS implementation. This research combines engineering, social science, and economic assessment methods to study IS emergence as a part of a (larger) system. To this end, a stepwise approach was taken, starting with assessing the technical potential for IS in an emerging industrial cluster (Chapter 2). We then studied the structure of previous collaborations in the cluster by analyzing regional and national institutions governing actors' behavior (Chapter 3). After assessing IS emergence's technical, collaborative, and institutional aspects, these aspects were incorporated with financial requirements in a MILP optimization model to study system behavior as a whole (Chapter 4). We investigated the formation of IS collaboration under different external conditions and evaluated the contribution of formed IS collaborations to cluster performance improvement. The research further examined the interplay between IS and carbon capture and storage toward a more sustainable cluster development (Chapter 5).To examine the feasibility and functionality of the proposed methods, we used the “Persian Gulf mines and metals special economic zone” (PGSEZ), an iron and steel-based cluster in Iran, as a real case study. The steel industry is critical for economic modernization and one of the most energy-intensive and polluting industries. 23% of final energy demand and 28% of direct CO2 emissions in the industrial sector belong to iron and steel production. This dissertation extends our understanding of the formation of IS as an integrated component of industrial clusters through several conceptual and methodological contribution, while the case study contributes to filling the gap in regional IS studies in developing oil-rich countries, where governing institutional and economic conditions are different from developed economies.Energie and Industri
Teaching Abroad in the Age of American Empire
No full textThe following paper discusses the benefits and challenges associated with teaching abroad. The proliferation of American-style universities, branch campuses, and other hybrid institutions is accelerating. As such, the Globalization of the American model of education has created new employment opportunities for social scientists trained in the US. The author draws from personal experience teaching at an American-style university to elaborate on how teaching at one of these institutions can influence one’s academic career
Author response to laboratory detection of MRSA. Comment on "Antibiotic susceptibility of vancomyin and nitrofurantoin in Staphylococcus aureus isolated from burnt patients in Sulaimaniyah, Iraqi Kurdistan"
No full textComment on
Antibiotic susceptibility of vancomyin and nitrofurantoin in Staphylococcus aureus isolated from burnt patients in Sulaimaniyah, Iraqi Kurdistan. [New Microbiol. 201
Boundary conditions for an inclusive local Peer-to-Peer energy trading market: Case studies of the Smart City demonstration projects: The Next Generation Prinsenland and Het Lage Land in Rotterdam
No full textInclusive Cities - International Planning and Developing RegionsManagement of Technology (MoT
Principal training needs and student performance rating in Iraqi elementary schools, 1987
No full textThis study examined the extent to which the ways in which principals and teachers rated student performance were influenced by such variables as: teachers biographic profile and their perceptions of principals training needs and leadership skills in administration, staff meeting, planning, supervision and staff development as well as principals' biographic profile and perceptions of their training needs. The sample consisted of 'Ml teachers and their respec�tive principals who returned questionnaires from 76 schools, though questionnaires were sent to all teachers and prin�cipals of 3D schools, randomly selected by the Supervisor of Education in Kerbala State, Iraq. The returned question�naires were statistically analysed by item to scale corre�lation and only items of a correlation of .05 and above were utilized in the respective scale to ensure reliability and validity. The results are as follows: In a Pearson Product moment Correlation fa) teachers' rating of student perfor-mance is significantly related to teachers' experience, age, recency of training and to principals' teaching experi�ence, recency of training, number of workshops attended, (b) principals' rating of student performance is signifi�cantly related to teachers' perception of principals' leadership skills, teachers' sex (female) and recency of training and principals' teaching experience (negative) sex (female), qualifications, recency of training, general subject and Ministry of Education to organize needed train�ing. In a factor analysis, teachers' rating of student performance is placed in the same factor with teacher/principal recency of training. While principals' rating of student performance is placed in the same factor with principals' teaching experi-ence, age and sex. Principals' need for training, in order to be effective, principals' qualification (negative) and principals' choice of on-the-job training are placed in the same factor. Regression analyses of the data indicate that only 7 percent of the variance of teachers' rating of student performance is predicted by teacher experience and recency of training with all other variables outside of the equation; while 82 percent of principals' rating of student performance is predicted in order by the following variables indicating that low principals' rating of student per�formance is significantly related to principals' science background, sex (male) high experience, little administrative training, requiring training to be effective, having younger teachers, fewer workshops attended, liking more training, little qualification, and wanting Ministry of Education to organize training. Overall, the data indicate the need for the Ministry of Education to organize on-the-job training for principals and teachers in their respective schools and probably for the development of institutes and open sub-colleges in each state to meet the need of training for higher rating of student performance
A model for improving the quality of cardiovascular assistants’ teaching-learning environment in Shahid Beheshti University of Medical Sciences
No full textBackground and Objective: Higher education, as a driving force for sustainable development has a strategic role in ensuring quality in the society. Thus, higher education is expected to play its crucial role in creation of change and innovation in an appropriate way to underpin the quality. The study aimed to provide a model for improving the quality of the teaching-learning environment for cardiovascular assistants at Shahid Beheshti University of Medical Sciences, Iran.
Materials and Methods: After implementation of open and axial coding, due to the lack of specific standards and explicit measurable criteria, the nine components approved by the experts were considered as a basis for the formation of a "model for improving the quality of the teaching-learning environment". The questions were designed based on 9 components and 27 sub-components in the form of a researcher-made questionnaire to determine the current status of teaching-learning environment for cardiovascular assistants.
Results: The results showed that the contribution of each component in improving the quality of teaching-learning environment based on factor load distribution. Also, the degree of appropriateness of the components was determined.
Conclusions: The analysis of the current status of teaching-learning environment for cardiovascular assistants indicates that despite the relatively favorable situation with a positive trend, the proposed model can contribute to the betterment of the situation in policy-making, planning, training, evaluation and resource development among cardiology human capital
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