Motion Control of Space Structures

A new area of civil engineering is emerging as we begin to establish a permanent presence in space. The new area of civil engineering is the motion control of space structures. This paper describes why the motion control of space structures is fundamentally a civil engineering problem.     

Impact of Nanotechnology on Future Civil Engineering Practice and Its Reflection in Current Civil Engineering Education

Current civil engineering education should address the need to provide a broad vision, develop the higher-order skills of future civil engineers, enable them to adopt emerging technologies, and formulate innovative solutions to complex problems. This paper introduces relevant nanotechnology developments to convey the new vision and inspire creativity in civil engineering. It also presents a pedagogical framework for integrating nanotechnology education into a civil engineering curriculum and cultivating self-regulated learning and creativity skills for civil engineering students. The pedagogical framework includes the introduction of nanotechnology innovations and other relevant innovative technologies, and explicit instructions on cognitive strategies for facilitating and inspiring self-regulated learning and creativity. It is implemented with problem/project-based learning for a cocurricular project that requires self-regulated learning and creativity. This pedagogical framework provides a model for integrating emerging technology education and higher-order skill development into existing engineering curriculum. The outcomes from the implementation of the pedagogical framework are presented, and their further improvements are discussed.     

Raising the Bar for Civil Engineering Education: Systems Thinking Approach

The civil engineering profession has been undergoing an identity search. With the advent of information technology and the global market, competition from engineering offices elsewhere and from other local professions is unprecedented. Technical engineering knowledge is no longer a guarantee for career success; rather a combination of numerous professional skills is required. The growing unease of civil engineers about their undefined role in the knowledge economy has led many to question civil engineering education. Although there is a push to enhance the humanistic and business aspects of the curriculum, there is a shove in the opposite direction to strengthen the technical content and keep abreast of technical change. Discussion of this socioeconomic problem within the ASCE forum has often used linear deterministic thinking that is characteristic of technical problems. Social and economic systems are usually more complex and harder to understand than technological systems. If we start making new policies to address the problems of the profession based on fuzzy, incomplete, and imprecise mental models, we may end up with counterintuitive results. This paper proposes a systems thinking approach to the reform of civil engineering education based on System Dynamics modeling, a feedback-based object-oriented modeling paradigm. Such a tool can capture the dynamic nature of complex systems and the nonlinear feedback loops that are often responsible for counterintuitive results of policy making.     

Educating Civil Engineers to Work in Space

This paper addresses the role of civil engineering in space operations and its impact on undergraduate education. The history of civil engineering and its role in society is discussed. The increasing complexity of the civil engineer's responsibilities from ancient times to the present is articulated. New civil engineering challenges fostered by man's quest to explore and inhabit the solar system and beyond are addressed. These challenges give rise to new requirements for the undergraduate education of tomorrow's civil engineers. The U.S. Air Force Academy's attempt to respond to these new undergraduate requirements is described. The civil engineering curriculum at the Air Force Academy emphasizes preparation for the unique challenges associated with space exploration and habitation. It is described and presented as a model for other undergraduate civil engineering programs that wish to focus on aerospace engineering activities into the 21st century.     

Demographics and Industry Employment of Civil Engineering Workforce

This paper provides a road map to studies and databases about civil engineering demographics and industry involvement by tracing workforce statistics, engineering degrees, data on industries and government, and economic forecasts. It is aimed at helping civil engineering managers, educators, and policy makers understand how their workforce evolved and what it will face in the future. The engineering workforce comprises about 1.5 million professionals in the United States (second in size only to that of teachers); of this number, civil engineering, at about 200,000 workers, is third behind electrical and mechanical engineering. However, the study shows that aggregation of workforce and economic statistics hides unique characteristics of civil engineering work caused by the concentration on consulting and state and local government. In fact, over 80% of civil engineers work either for consultants or government. This characteristic of civil engineering employment needs more study, particularly to determine how best to educate civil engineers to respond to the public–private arena of infrastructure and environment. During the past century, civil engineering has been a steady field with good opportunities, but civil engineers in the future will face the same career issues and pressures as other professionals. Global production of new engineers has now passed the one million-per-year mark, with U.S. production being about 12% of the total. This large supply of engineers will present intense competition to all engineering disciplines. ASCE faces many challenges to respond to the many changes in the civil engineering profession. The concept of institutes contained in ASCE's strategic plan will address many of the technical issues, but the study indicates that professional and educational issues need more attention.     

Genetic Programming-Based Approach for Structural Optimization

The main purpose of this paper is to introduce genetic programming into civil engineering problem solving. This paper describes a genetic programming-based approach for simultaneous sizing, geometry, and topology optimization of structures. An encoding strategy is presented to map between the real structures and the genetic programming parse trees. Numerical results for two examples reveal that the proposed approach is capable of producing the topology and shape of the desired trusses and the sizing of all the structural components. Hence, this approach can potentially be a powerful search and optimization technique in civil engineering problem solving.     

Problem-Based Learning in Structural Engineering Education

Structural engineering education has been based historically on specialization within the framework of a four-year undergraduate degree in civil engineering. Many practitioners, however, are concerned that modern civil engineering curricula are not meeting the needs of the structural engineering profession. The purpose of this paper is to contribute to the conversation about undergraduate education and the increased technical skills requested by the structural engineering profession. Problem-based learning is presented as a strategy for expanding the civil engineering curriculum to include concentrated study and a problem-solving experience, as well as engaging students in the process of learning how to learn. The paper reports on our experience in incorporating problem-based learning within a senior-year project. The conclusions discuss the challenges of extending this learning format to additional students.     

Information Technology in Civil Engineering Curriculum

The fast-moving world of information technology confronts the civil engineer with constant change. This creates challenges for educators and students because rapid change requires curricula to be flexible and educators to gain competency and access to new equipment and software. Whereas a decade ago, civil engineering educators debated how to teach “programming,” the picture is now much more complex. The paper reports on how information technologies are changing the practice of civil engineering and offers a new framework for integrating next-generation information technology into the civil engineering curriculum at the department level.     

Teaching Lessons Learned

This is a continuing series of quarterly articles on lessons learned and best practices in civil engineering education. The intent of the series is to reinforce good practices, describe new or developing practices, and provide a forum for what works well and what does not. It is hoped that this series will be an important quarterly read for all civil engineering educators and all those interested in what’s going on in civil engineering education today. Authors and topics will vary from issue to issue. Contact the associate editor, Mark Evans, if you wish to contribute to an upcoming issue.     

Technical Issues for Lunar Base Structures

The establishment of a permanent human presence on other planets will require establishing permanent infrastructure in new environments. Civil engineers select, define, and implement solutions to infrastructure design problems in unique environmental contexts. Wind and seismic loading are two examples of constraints long familiar to terrestrial civil engineering. Designing structures for lunar exploration, development and eventual settlement will make use of the same design processes already practiced by the civil engineering profession. However, the extensive experience base resulting from centuries of terrestrial work does not adequately prepare civil engineers for the unprecedented constraints and environmental conditions that are encountered in space. The limited knowledge we already have about the Moon (mostly from the Apollo program) is a place to start. By assimilating and working with this knowledge, those pursuing the design of lunar base structures can begin to produce realistic and valid design solutions. The paper presents technical, operations, and programmatic issues that the writers consider fundamental to understanding the facts of life in this promising new design arena.     

Tenure and Teaching

This is a continuing series of quarterly articles on lessons learned and best practices in civil engineering education. The intent of the series is to reinforce good practices, describe new or developing practices, and provide a forum for what works well and what does not. It is hoped that this series will be an important quarterly read for all civil engineering educators and all those interested in what’s going on in civil engineering education today. Authors and topics will vary from issue to issue. Contact the associate editor, Mark Evans, at mark.evans@usma.edu if you wish to contribute to an upcoming issue.     

Educating Students to be Creative Problem Solvers as 21st Century Engineers

This is a continuing series of quarterly articles on lessons learned and best practices in civil engineering education. The intent of the series is to reinforce good practices, describe new or developing practices, and provide a forum for what works well and what does not. It is hoped that this series will be an important quarterly read for all civil engineering educators and all those interested in what’s going on in civil engineering education today. Authors and topics will vary from issue to issue. Contact the associate editor, Mark Evans, at mark.evans@usma.edu if you wish to contribute to an upcoming issue.     

Tradition and Innovation in Teaching Structural Design in Civil Engineering

This paper briefly reviews the history of structural engineering education: The dawn, development, and consolidation of traditional education systems, as well as their fall into decline in the contemporary technological world. Recent graduates in civil engineering do not have all of the skills and knowledge that the labor market is demanding and civil engineering is losing the social prestige and professional recognition that our profession deserves. It is necessary to improve traditional education systems to produce the best civil engineers. The writers present a detailed discussion of their experiences teaching structural design at the School of Civil Engineering of Ciudad Real, Spain, using project-based and cooperative learning methods, as well as implementing knowledge management and transference to the learning process. Results and costs of these methods, as well as the problems related to faculty selection, are set out. The paper concludes with a reflection on the major educational possibilities and historical opportunities presented through the introduction of these new methods and suggest that this is the best way to combine engineering education and practice.     

Professional Program Criteria for Civil Engineering Curriculums

The Accreditation Board for Engineering and Technology (ABET) has adopted a revised set of accreditation criteria that is designed to ensure that graduates of accredited programs are prepared to enter the practice of engineering. The proposal also specifies that engineering programs must demonstrate that their graduates have an understanding of professional practice issues in addition to proficiency in specific subject areas that are tabulated in the civil engineering program criteria. The findings of this study indicate that engineering undergraduate and graduate students as well as practitioners perceive that four subject areas are of great importance for civil engineers. They include structural engineering, hydraulics∕hydrology∕water resources, engineering design, and mathematics through calculus and differential equations. In contrast, one area, chemistry, received lower ratings. The data suggest that the majority of subjects included in the civil engineering program criteria are considered by students and practitioners to have generally the same level of importance and should be included in the curriculum at an above average level. In particular, 81% of the subject areas included in the ABET civil engineering program criteria are rated by both students and practitioners with a composite score ≥3.1. This may be interpreted as strong support for the Engineering Criteria 2000 program requirements.     

Civil Engineering: Anachronism and Black Sheep

The paper presents a thesis that the word “civil” in “civil engineering” is anachronistic and does not represent the works of the so-called civil engineer. The origin and root of the words “engineer” and civil are traced. Engineer is seen to have its roots via the Greek and Latin in the Sanskrit word jan, meaning life, whereas civil is traced to the differentiation that engineers of the 18th and 19th centuries created from their military engineer counterparts. The word engineer was used as far back as the 14th century, though, much of it in nontechnical terms. The evolution of the practice of civil engineering, and the history of the formation of societies are studied to determine how tasks relate to the word civil. Of particular interest is to see what the practitioners and founders of societies aimed to embody in this field of civil engineering. The paper aims to explore the factors and influences in the practice and naming of the civil engineer. It delves into the roots and origins of the names of a number of engineering disciplines, giving explanations and commentary on the implications of those names, and finds that all those names relate to technical functions. The paper concludes that the name of civil engineering does not represent the functional tasks of the civil engineer, in contrast to names of other engineering disciplines, and is, moreover, out of place with modern times. What’s in a name? This paper seeks to find out.     

Language Professionals in Engineering Faculty: Cross-Cultural Experience

Communication courses are often given low priority by engineering students and faculty alike. This is mainly because they are perceived to be, and often are, divorced from the realities of the engineering world. Credible and relevant communication courses demand the integration of language and engineering content so that the tasks reflect the sort of problem solving that students will face in real-life engineering contexts. One problem that language specialists face in designing such courses arises from the fact that they hail from a discipline very different from engineering in purpose, subject matter, and pedagogical approach. To work effectively in the different “subculture” of engineering, they need to assimilate and attain the cultural literacy of the discipline. In our institution, the “acculturation” process of language specialists has been helped along by the fact that they are based in the engineering school. This provides greater opportunities for assimilation into the discipline and allows the interfacing of communication skills and civil engineering to take place more effectively. This paper describes how this setup has been instrumental in providing a communication course that students perceive to be relevant and therefore an integral part of their engineering studies.     

Managing Changing Classroom Expectations

This is a continuing series of quarterly articles on lessons learned and best practices in civil engineering education. The intent of the series is to reinforce good practices, describe new or developing practices, and provide a forum for what works well and what does not. It is hoped that this series will be an important quarterly read for all civil engineering educators and all those interested in what’s going on in civil engineering education today. Authors and topics will vary from issue to issue. Contact the associate editor, Mark Evans, at mark.evans @usma.edu if you wish to contribute to an upcoming issue. Managing Changing Classroom Expectations     

Engineering a New Education

The narrow focus of civil engineering education and practice needs a new paradigm consistent with the essentiality and complexity of civil works in society. Traditional pride of civil engineers in their work is mixed increasingly with the growing frustration from low-level compensation and lack of appreciation and respect. Image programs are not the answer; adding value is. Education confined to the two-century old, four-year format is a hindrance. The content, expectations, and duration of civil engineering education must be changed to create more value. While continuing the “doer” tradition, the new civil engineer should be groomed to be an effective decider and director. Civil works will always be in demand. However, it is to be decided who will lead the planning, design, construction, and operation of civil works...civil engineers or others? Civil engineers are faced with a leadership and management challenge. They must engineer their future or others will engineer it for them.     

Improving Student Confidence through Metacognative Learning

This is a continuing series of quarterly articles on lessons learned and best practices in civil engineering education. The intent of the series is to reinforce good practices, describe new or developing practices, and provide a forum for what works well and what does not. It is hoped that this series will be an important quarterly read for all civil engineering educators and all those interested in what’s going on in civil engineering education today. Writers and topics will vary from issue to issue. Contact the Associate Editor, Mark Evans, at mark.evans@usma.edu if you wish to contribute to an upcoming issue. Improving Student Confidence through Metacognative Learning     

高炉大体积混凝土基础水化热温差的控制

高炉大体积混凝土基础的施工是土建部分最关键的工序,施工中很容易产生水化热温差裂缝,严重影响工程质量,造成经济损失.控制好水化热内外温差是大体积混凝土施工中的关健问题.