1,240 research outputs found
Remote sensing reflectance measured in the South China Sea and Sulu Sea during RV Sonne cruise SO218 from 18 to 27 November 2011
No full textWe present a data set on remote sensing reflectance (RRS) at 1nm resolution from 350 to 800nm obtained from measurements in the coastal and open ocean areas of the South China Sea and Sulu Sea from 18 to 27 November 2011. For the measurements we used radiometric hyperspectral (3.3 nm sampling, 10 nm FWHM) underwater profile measurements down to the 0.1 % light level using RAMSES (TriOS GmbH, Germany) sensors which measured depth resolved the upwelling radiance and downwelling irradiance, both corrected by incident sunlight fluctuations with a second RAMSES sensor measuring the above water downwelling irradiance. The later sensor data were also used to finally calculate RRS.
We followed the protocol by Mueller et al. (2003) further modified by Matsuoka et al. (2007) and Stramski et al. (2008), as described for our instrument set-up in Taylor et al. (2011). Our method is further described and assessed for its uncertainty in Tilstone et al. (2020). The campaign is described in detail in Cheah et al. (2013) and was also optical constituents hyperspectral absorption data (Bracher et al. 2021a, b) and phytoplankton pigments (Bracher 2014) were measured
Phytoplankton absorption during SONNE cruise SO218
No full textWater samples were collected from the two-week SO218 SHIVA-Sonne cruise which covered a transect from Singapore (1.26 N, 103.82 E) to Manila (14.59 N, 120.97 E), crossing the shelf areas of both South China Sea (SCS) and Sulu Sea (SS), and the deep water basin in the SS. Wtaer samples were taken from the ship's moonpool during underway and from CTD Niskin bottles at six different depths from the upper 150 m during CTD station. An additional sampling of surface waters at 1, 5, and 10 m were carried out at two near shore stations by local small boat. For locations of underway, local and CTD stations see Fig. 1 in Cheah et al. 2013. All collected samples were filtered through 25 cm Whatman GF/F filters, respectively, under low-vacuum pressure (below 200 mbar), and then immediately shock-frozen in liquid nitrogen and stored at −80°C for later analysis in the lab. Measurements of the phytoplankton absorption were carried out on a dual-beam UV/VIS spectrophotometer (Cary 4000, Varian Inc.) equipped with a 150 mm integrating sphere (external DRA-900, Varian, Inc. and Labsphere Inc., made from Spectralon (TM)) using a quantitative filterpad technique modified as described in details in Taylor et al. (2011). The data set is also collocated to Bracher (2014) phytoplankton pigment data and Bracher et al. (2021) particulate absorption data
When The Tide Recedes: a photographic sojourn along the Singapore River.
No full textThis report has been compiled to show why we have chosen Singapore River as the subject or theme of our project, an overview of the pre-production and production process, to explainthe decisions for the images selected and manner of presentation, and to reflect and evaluate the lessons - both good and bad - learnt from the course of working on this project.Bachelor of Communication Studie
Overall synthesis and conclusions
No full textThis chapter first systematically summarizes the most important findings and policy implications of each of the chapters included in this book volume. Next it synthesizes the overall findings and policy implications, and discusses future avenues for policy making and research. A first conclusion is that the chapters make clear that the ranges in policy relevant implications of AVs, within the scope of each chapter/topic, are still relatively broad. Secondly we conclude that research that is conceptually rich is more valuable for policy making. Thirdly we hypothesize that context matters for the uptake, impacts, and specific system design characteristics of real world AV implementation. Fourth we conclude that research on the global south has been limited so far. Fifth we argue that AVs, shared vehicles and electric vehicles (EVs) might stimulate each other in a positive way, in all directions. Finally we conclude that AVs will have wider societal implications, such as in the area of land use, accessibility, social exclusion, governmental expenditures, the labor market, and the environment. The more indirect the effects of AVs are, the more difficult they are to understand. For policy making a first conclusion is that the issues of ethics, cyber security and data protection deserve way more attention than they currently get. We also conclude that future motorway network extensions might not be no-regret anymore, because of possible congestion reductions due to AVs, but also because of decreasing marginal values of time. Finally we argue that countries that introduce AVs later than other countries can learn a lot from the real world experiences elsewhere.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Transport and Logistic
Spatial effects in the ex-ante evaluation of urban underground transportation infrastructure projects: A study of the gap between the perceived spatial effects of Het Souterrain and the spatial effects incorporated in already conducted CBAs
No full textUnderground transportation infrastructure projects are a possible solution to the increasing demand for transportation, limited space and congestion in urban areas. In addition, these kinds of projects are in line with the need for improvement of the quality of the public urban space. Nowadays, when a municipality applies for funding with the national government for the construction of a transportation project a Cost-Benefit analysis (CBA) has to be conducted by an independent party (Ministry of Infrastructure and the Environment, 2012). In the CBA the costs and benefits of the project on the society are balanced and therefore provides the CBA decision-makers with important policy information; whether the benefits outweigh the costs of the project compared to the state of affairs in which no project is build- also called the reference case (van Wee & Rietveld, 2014). The use of the CBA in the decision-making process leads to a better decision-making process (Mouter, Annema, & van Wee, 2013), but it is unclear which exact role a CBA plays in the decision-making process, because politicians also have other reasons than the results of a CBA for reaching a go/no-go decision (Rienstra, 2008; Eijgenraam, Koopmans, Tang, & Verster, 2000; Annema, 2014; Mackie, 2010). A limitation of the CBA is that not all (welfare) effects can be taken (properly) into account in a CBA (Mouter, Annema, & van Wee, 2015). CBAs are often incomplete because project effects are uncertain, unknown or difficult to monetize (Mouter, Annema, & van Wee, 2013). Under these conditions, political decisions based on results of a CBA study are based on incomplete policy information.Technology, Policy and ManagementDepartment of Transport and Logistic
Implications of automated vehicles for accessibility and location choices: Evidence from an expert-based experiment
No full textIn this paper, possible accessibility impacts of fully automated vehicles (AVs) are explored. A conceptual framework for those impacts is developed based on the model of four accessibility components (i.e. land use, transport, temporal and individual) of Geurs and van Wee (2004). Q-method is applied among a sample of seventeen international accessibility experts to explore heterogeneity among experts with respect to the impacts of AVs on accessibility, and study different views and clusters of experts. Q-method statements are deductively categorized according to four accessibility components of the conceptual framework. Three viewpoints were extracted, indicating that experts expect AVs to influence accessibility through all four accessibility components. Viewpoint A expects that accessibility benefits stemming from AVs will be highly uncertain, mainly because of induced travel demand that will likely cancel out travel time and cost savings of AVs in the long term. Viewpoint B anticipates that accessibility changes because of AVs will have two opposing implications for urban form: densification of city center and further urban sprawl. Finally, viewpoint C expects that those who can afford an AV will mainly enjoy AVs benefits, thus AVs will have more negative than positive implications for social equity.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Transport and PlanningTransport and Logistic
Accessibility and equity: A conceptual framework and research agenda
No full textThis discussion paper proposes a conceptual model for the factors influencing ethical concerns regarding accessibility, building on the idea that people should have a minimum level of access to some destinations (founded in the ethical principle of sufficientarianism), and secondly from the idea that differences in levels of accessibility between (groups of) people could be relevant from an equity perspective (founded in the ethical principle of egalitarianism). The four components of accessibility introduced by Geurs and van Wee (2004) – the land use system, the transport system, the individual, and the temporal component – are included in the conceptual model which additionally disentangles the individual component, includes context factors (such as culture/religion), digital access options, perceived accessibility and normative judgments. In addition, this paper proposes a research agenda suggesting several types of quantitative and qualitative methods to study the complex relationships proposed in the model, and research to address those parts of the model for which limited knowledge is currently available.Transport and Logistic
The magic of storytelling : learning the craft at Millward Brown.
No full textThis report documents the learning journey of an intern at Millward Brown, one of the world’s top ten research agencies. As part of the curriculum structure, third year Communication Studies students at Wee Kim Wee School of Communication and Information are required to undergo a 24-week Professional Internship (PI) at an organization. The author chose to work at Millward Brown so that he could immerse himself in the market research sector and had a taste of what the future working life as a market researcher is like.
Throughout the report, bits and pieces of experience of the author as an intern will be weaved together to provide a snapshot of the vibrancy of the market research sector through the lenses of Millward Brown.
This report, hence, seeks to give an insight into the internal structure of Millward Brown, the services it provides as well as its relationship with clients and its position in the research sector. In addition, this report also outlines the training and the knowledge that the author has acquired as an intern research associate as well as how he has applied this training in his daily jobscope with four different clients: Johnson & Johnson, Pepsi Co., Cerebros, and Gillette.
Above all, facets of the working life, working environment, and other social skills required at work are also reflected on in this report. The author concludes the report with the major takeaways he has from 24 weeks of hands-on learning that will in one way or another provide him with a better picture of the working world that he might join one day.COMMUNICATION STUDIE
The Return of Billiard Balls? US–China Tech War and China’s State-Directed Digital Capitalism
No full textMedia policy analysts of (neo)liberal persuasion have long seen China as an anomaly. This is, however, a narrow perspective, whose explanatory power pales facing the challenge of recent events. Drawing upon International Relations (IR) theories, this article reflects on the contradicting ideas of (neo)liberalism and (neo)realism in digital media policy, while examining US–China tech war and China’s state-directed platform capitalism. It argues that more attention should be paid to neorealist frameworks, especially Mearsheimer’s offensive realism, which sees the world as consisting of billiard balls bumping into each other, pursuing hegemony. How is offensive realism useful in helping understand recent events about China? How is it also limited? Are we returning to an era of billiard balls? What are the implications for digital media policy to transcend platform capitalism and approach platform socialism?.Nanyang Technological UniversityThis article was produced within the framework of the Jean Monnet Network on the European Media and Platforms Policy (EuromediApp), supported by the Erasmus+ Program of the European Union (2021-23). The author also acknowledges the support from the Shaw Foundation Endowment at Wee Kim Wee School of Communication and Information, Nanyang Technological University
Robust Transport and Assembly Automation System Using Vision-Based Control Using UAV
No full textWe propose an automated system that moves blocks to a specific location, such as a block map, using Unmanned Aerial Vehicle (UAV). The system was developed in a simulation environment using Gazebo simulator, and the test environment was set with different GPS noise and illuminance in order to resemble the real environment. To increase the accuracy of the system, we used an algorithm that picks up and places blocks using vision-based controls using deep learning-based object detection and recognition, not just GPS based control. In addition, when picking up and placing blocks, it is easy to execute by using a magnet module rather than a typical manipulator. Our proposed system in simulation experiments in various environments consistently showed excellent performance. The system seems to have robust performance in a more difficult environment than existing robots and has simplicity and efficiency in execution. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd
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