A Hermeneutic Phenomenological Study into the impact of BIM on the Social Dynamics of the AEC professional in the workplace.

A review of the literature published surrounding new digital design and construction technologies and associated processes described within the Architecture, Engineering, and Construction (AEC) community as Building Information Modelling (BIM) or Virtual Design and Construction (VDC) reveals a gap in the theoretical understanding of the impact these technologies are having on professionals who work in this industry. The central aim of this research is to discover if there has been a shift in social dynamics as a result of the adoption of BIM in the workplace and, if there has been, to discuss the meaning of this for the industry and the community who educate these professionals. This study is important as it seeks to develop an understanding of the impact of BIM from the perspective of those AEC professionals affected. The study of human beings is referred to as Anthropology. It is a social science and is characterised as the study of human societies, cultures, and development often affected by social or technical intervention. BIM is an example of a technological intervention that has been introduced into the complex design and construction industry. This multidisciplinary industry has relied on representation in the form of paper-based communication documents for 500 years. However, with the introduction of new technologies, the AEC industry is experiencing a digital transformation, characterised by a move from representation to simulation. The author has conducted a study examining the lived experience of AEC professionals who have come into contact with the subject phenomenon in their workplace. The workplace is the locus for this research. It is defined as the place where the AEC professionals conduct their day to day business. The subjects of this research study are a purposeful selection of industry professionals who have experienced the phenomenon and have told the Author their stories. These lived experiences have been analysed and interpreted using a suitable methodology to address the research question; in this case, Hermeneutic Phenomenology. The data analysis has identified four themes: Identity, Empowerment, Disarrangement and Collaborative Practice. The emergence of these themes and the discussion around them will add new knowledge into the subject area. The study concludes by discussing the implications of this research for the design and construction industry and educational institutions

A BIM+Blockchain approach to ensure Transparency in the Strategic Housing Development Planning System

The introduction of the fast-tracking housing regulations in Ireland has modified the dynamics in which democratic participation is deployed in planning decisions. The resulting planning process has favoured inequality phenomena and has strengthened the position of construction lobbies in large-scale developments. This paper enforces citizen engagement in the Strategic Housing Development (SHD) framework using Building Information Modelling (BIM) and blockchain technologies to build digital trust. Digital tools have enormous potential to deliver more transparent planning by establishing proven accountability for building permissions and promoting trusted interactions between citizens and local administrations. This study first describes all the reasoning underpinning the de-democratisation process of Irish planning after introducing SHD regulations. Based on the previous findings, a theory-driven, inductive case study is proposed. The case study offers an integrated framework that combines the improved visualisation properties of BIM with the immutability characters of blockchain. Results indicate that such a methodology successfully addresses the problem of trust and transparency and brings additional intrinsic benefits due to the use of digital solutions in planning

Using BIM Technologies to Calculate and Visualise the Global Warming Potential of Building Materials

The built environment has a significant potential to reduce carbon emissions and raw material consumption. Digitisation processes such as Building Information Modelling (BIM) and Life Cycle Assessment (LCA) can offer solutions to improve sustainability throughout the building’s life cycle for the decarbonisation of the industry. In Ireland, the Royal Institute of Architects Ireland (RIAI) launched the 2030 Climate Challenge in response to the climate emergency. This sets out a list of targets to meet before 2030 for carbon emissions within the built environment. This research aims to investigate if the application of BIM tools can be leveraged to automate Global Warming Potential (GWP) to support design decision-making in meeting the RIAI 2030 Climate Challenge. This research focuses on the development of a validated database for building materials using the growing register of Environmental Product Data certificates (EPD) necessary for the correct calculation of GWP of building materials. This study has developed a series of workflows that can be used to automate and monitor Global Warming Potential (GWP) to assist professionals in meeting the RIAI 2025/2030 embodied carbon targets. The results demonstrated a proof of concept for automating GWP calculation via the digital building model database and, in doing so, giving the design team visual feedback, empowering them in their design decision-making

A Proposal to Harmonize BIM and IoT Data Silos using Blockchain Application

The integration of Building Information Modelling (BIM) and Internet of Things (IoT) provide significant end-to-end benefits for the architecture, engineering, construction, and operations (AECO) industry. Example applications include on-site assembly services, data localization for built environment, occupancy performance measures and many other analyses that can be used to improve the built environment. However, silos in the BIM and IoT data exchange have impacted the digital process adoption in AECO industry, which aims to change the dynamics and behaviors of the current working process. Penzes, (2018) in his report, acknowledges the AECO industry as one of the most fragmented sectors with a scattered and complex supply chain. Kelly & Dowd, (2015) reported that the prevalence of waste in AECO industry is due to old management practice and business culture, while Charlès, (2014) suggested this is a symptom of ineffective practices caused by the lack of data integration and disconnected documents between the industry players. Insufficient data for process simulation have resulted in poor productivity, high risk, and low profitability. This study sets out to critically analyse the Blockchain technology’s potential to connect, integrate and advance AECO industry information exchanges and digital processes by using BIM and IoT integration use case as a methodology to identify, clarify and organize the proposed system requirements. This paper presents a comprehensive literature review to uncover the current state of BIM and IoT data silos. Moreover, an online survey assessment and a simulated test were conducted to critically evaluate, investigate, and examine the opportunities and solutions in harmonizing BIM and IoT data silos by using the Blockchain application

SUPPRESSION OF NONLINEARITY INDUCED DISTORTIONS IN RADIO OVER FIBER LINKS

ABSTRACT Radio over fiber is an analog-optical link proposed as a promising cost-effective solution to meet the explosive demand for broadband, interactive and multimedia services over wireless media. RoF provides functionally simple base stations that are interconnected to a control station through an optical fiber, exhibiting the exciting features of transparency to bandwidth, modulation techniques, centralized sharing of resources, multiuser-multiservice operation and immunity to electromagnetic interference. But harmonic and intermodulation distortions in laser diode and semiconductor optical amplifier affect the signal quality to a greater extent. So necessary actions must be taken to improve the signal to noise ratio. For linearizing the laser diode, a suitable predistorter circuit topology is modeled using sinusoidal and QPSK input. Similarly, the nonlinearities in SOA can be suppressed by the introduction of feedforward technique. The individual effect of predistortion in laser and feedforward in SOA are investigated and the combined effect is also investigated in this paper

Law Libraries and Laboratories: The Legacies of Langdell and His Metaphor

Law Librarians and others have often referred to Harvard Law School Dean C.C. Langdell’s statements that the law library is the lawyer’s laboratory. Professor Danner examines the context of what Langdell through his other writings, the educational environment at Harvard in the late nineteenth century, and the changing perceptions of university libraries generally. He then considers how the “laboratory metaphor” has been applied by librarians and legal scholars during the twentieth century and into the twenty-first. The article closes with thoughts on Langdell’s legacy for law librarians and the usefulness of the laboratory metaphor

Dynamic Limits on Planar Libration-Orbit Coupling Around an Oblate Primary

This paper explores the dynamic properties of the planar system of an ellipsoidal satellite in an equatorial orbit about an oblate primary. In particular, we investigate the conditions for which the satellite is bound in librational motion or when the satellite will circulate with respect to the primary. We find the existence of stable equilibrium points about which the satellite can librate, and explore both the linearized and non-linear dynamics around these points. Absolute bounds are placed on the phase space of the libration-orbit coupling through the use of zero-velocity curves that exist in the system. These zero-velocity curves are used to derive a sufficient condition for when the satellite's libration is bound to less than 90 degrees. When this condition is not satisfied so that circulation of the satellite is possible, the initial conditions at zero libration angle are determined which lead to circulation of the satellite. Exact analytical conditions for circulation and the maximum libration angle are derived for the case of a small satellite in orbits of any eccentricity.Comment: Submitted to Celestial Mechanics and Dynamical Astronom

Ribosome and transcript copy numbers, polysome occupancy and enzyme dynamics in Arabidopsis

Plants are exposed to continual changes in the environment. The daily alternation between light and darkness results in massive recurring changes in the carbon budget, and leads to widespread changes in transcript levels. These diurnal changes are superimposed on slower changes in the environment. Quantitative molecular information about the numbers of ribosomes, of transcripts for 35 enzymes in central metabolism and their loading into polysomes is used to estimate translation rates in Arabidopsis rosettes, and explore the consequences for important sub-processes in plant growth. Translation rates for individual enzyme are compared with their abundance in the rosette to predict which enzymes are subject to rapid turnover every day, and which are synthesized at rates that would allow only slow adjustments to sustained changes of the environment, or resemble those needed to support the observed rate of growth. Global translation rates are used to estimate the energy costs of protein synthesis and relate them to the plant carbon budget, in particular the rates of starch degradation and respiration at night

Characteristics, Access, Utilization, Satisfaction, and Outcomes of Healthy Start Participants in Eight Sites

To describe the characteristics, access, utilization, satisfaction, and outcomes of Healthy Start participants in eight selected sites, a survey of Healthy Start participants with infants ages 6–12-months-old at time of interview was conducted between October 2006 and January 2007. The response rate was 66% (n = 646), ranging from 37% in one site to >70% in seven sites. Healthy Start participants’ outcomes were compared to two national benchmarks. Healthy Start participants reported that they were satisfied with the program (>90% on five measures). Level of unmet need was 6% or less for most services, except for dental appointments (11%), housing (13%), and child care (11%). Infants had significantly better access to medical care than did their mothers, with higher rates of insurance coverage, medical homes, and checkups, and fewer unmet needs for health care. Healthy Start participants’ rates of ever breastfeeding (72%) and putting infants to sleep on their backs (70%) were at or near the Healthy People 2010 objectives, and considerably higher than rates among low-income mothers in the ECLS. The high rate of health education (>90%) may have contributed to these outcomes. Elimination of smoking among Healthy Start participants (46%) fell short of the Healthy People 2010 objective (99%). The low-birth weight (LBW) rate among Black Healthy Start participants (14%) was three times higher than the rate for Whites and Hispanics (5% each). Overall, the LBW rate in the eight sites (7.5%) was similar to the rate for low-income mothers in the ECLS, but both rates were above the Healthy People 2010 objective (5%). Challenges remain in reducing disparities in maternal and child health outcomes. Further attention to risk factors associated with LBW (especially smoking) may help close the gaps. The life course theory suggests that improved outcomes may require longer-term investments. Healthy Start’s emerging focus on interconception care has the potential to address longer-term needs of participants

Abdominal pain with a twist

Malrotation in children is due to either an incomplete or non-rotation of the foetal mid-gut during perinatal development. Presentation is usually in the first few weeks of life, often with life-threatening volvulus and ischaemia. However, it can be a rare cause of abdominal pain in older children and young adults. We present such a case, as a reminder to emergency physicians that malrotation should be considered in the differential diagnosis of recurrent or chronic abdominal pain not only in children but also in adolescents