scholarly journals Knowledge sharing on deep learning in physics research using VISPA

2020 ◽  
Vol 245 ◽  
pp. 05040
Author(s):  
Max Beer ◽  
Niclas Eich ◽  
Martin Erdmann ◽  
Peter Fackeldey ◽  
Benjamin Fischer ◽  
...  

The VISPA (VISual Physics Analysis) project provides a streamlined work environment for physics analyses and hands-on teaching experiences with a focus on deep learning. VISPA has already been successfully used in HEP analyses and teaching and is now being further developed into an interactive deep learning platform. One specific example is to meet knowledge sharing needs in deep learning by combining paper, code and data at a central place. Additionally the possibility to run it directly from the web browser is a key feature of this development. Any SSH reachable resource can be accessed via the VISPA web interface. This enables a flexible and experiment agnostic computing experience. The user interface is based on JupyterLab and is extended with analysis specific tools, such as a parametric file browser and TensorBoard. Our VISPA instance is backed by extensive GPU resources and a rich software environment. We present the current status of the VISPA project and its upcoming new features.

Author(s):  
Nurshahrily Idura Ramli ◽  
Mohd Izani Mohamed Rawi ◽  
Fatin Nur Nabila Rebuan

Today, in the realm of Industry 4.0, vastly diverse Internet of Things (IoT) technology are integrated everywhere, not to mention included in academic programs in schools and universities. Domain ratio of the final year projects in Universiti Teknologi Mara exposes a staggering hype in IoT as compared to other domains despite not having IoT included in any of the courses. Meanwhile, to fulfill the needs of the student in exploring this technology, an integrated IoT learning platform is developed. It integrates an IoT smart home model and a web-based interface as a learning platform to inspire hands-on learning for the students. The raspberry pi, motion sensor, analog gas sensor, atmospheric sensor, ultrasonic proximity sensor, and rain detector sensor are integrated together in a Lego-built smart home model where its connectivity and readings are displayed in a simple web interface to enable and inspire learning. A manual to set up the entire model is also prepared as a guide for students to set up and further explore the functionalities and operabilities of “things”.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ling-Ping Cen ◽  
Jie Ji ◽  
Jian-Wei Lin ◽  
Si-Tong Ju ◽  
Hong-Jie Lin ◽  
...  

AbstractRetinal fundus diseases can lead to irreversible visual impairment without timely diagnoses and appropriate treatments. Single disease-based deep learning algorithms had been developed for the detection of diabetic retinopathy, age-related macular degeneration, and glaucoma. Here, we developed a deep learning platform (DLP) capable of detecting multiple common referable fundus diseases and conditions (39 classes) by using 249,620 fundus images marked with 275,543 labels from heterogenous sources. Our DLP achieved a frequency-weighted average F1 score of 0.923, sensitivity of 0.978, specificity of 0.996 and area under the receiver operating characteristic curve (AUC) of 0.9984 for multi-label classification in the primary test dataset and reached the average level of retina specialists. External multihospital test, public data test and tele-reading application also showed high efficiency for multiple retinal diseases and conditions detection. These results indicate that our DLP can be applied for retinal fundus disease triage, especially in remote areas around the world.


2019 ◽  
Vol 629 ◽  
pp. A139 ◽  
Author(s):  
S. Torres ◽  
M. X. Cai ◽  
A. G. A. Brown ◽  
S. P. Zwart

Comets in the Oort cloud evolve under the influence of internal and external perturbations, such as giant planets, stellar passages, and the Galactic gravitational tidal field. We aim to study the dynamical evolution of the comets in the Oort cloud, accounting for the perturbation of the Galactic tidal field and passing stars. We base our study on three main approaches; analytic, observational, and numerical. We first construct an analytical model of stellar encounters. We find that individual perturbations do not modify the dynamics of the comets in the cloud unless very close (<0.5 pc) encounters occur. Using proper motions, parallaxes, and radial velocities from Gaia DR2 and combining them with the radial velocities from other surveys, we then construct an astrometric catalogue of the 14 659 stars that are within 50 pc of the Sun. For all these stars we calculate the time and distance of closest approach to the Sun. We find that the cumulative effect of relatively distant (≤1 pc) passing stars can perturb the comets in the Oort cloud. Finally, we study the dynamical evolution of the comets in the Oort cloud under the influence of multiple stellar encounters from stars that pass within 2.5 pc of the Sun and the Galactic tidal field over ±10 Myr. We use the Astrophysical Multipurpose Software Environment (AMUSE), and the GPU-accelerated direct N-body code ABIE. We considered two models for the Oort cloud, compact (a ≤ 0.25 pc) and extended (a ≤ 0.5 pc). We find that the cumulative effect of stellar encounters is the major perturber of the Oort cloud for a compact configuration while for the extended configuration the Galactic tidal field is the major perturber. In both cases the cumulative effect of distant stellar encounters together with the Galactic tidal field raises the semi-major axis of ~1.1% of the comets at the edge of the Oort cloud up to interstellar regions (a > 0.5 pc) over the 20 Myr period considered. This leads to the creation of transitional interstellar comets (TICs), which might become interstellar objects due to external perturbations. This raises the question of the formation, evolution, and current status of the Oort cloud as well as the existence of a “cloud” of objects in the interstellar space that might overlap with our Oort cloud, when considering that other planetary systems should undergo similar processes leading to the ejection of comets.


2021 ◽  
Vol 45 (3) ◽  
pp. 343-351
Author(s):  
Linda C. Chu ◽  
Seyoun Park ◽  
Satomi Kawamoto ◽  
Alan L. Yuille ◽  
Ralph H. Hruban ◽  
...  

2021 ◽  
Vol 273 ◽  
pp. 12006
Author(s):  
Tatiana Grober ◽  
Oleg Grober

According to the requirements of the Ministry of Science and Education, teachers of various qualifications are required to regularly improve their professional skills. Using the distance learning platform allows you to automate the learning process, starting with the paperwork, ending with the final testing and obtaining a diploma. The problem is that during the course of training, you have to wait a long time for a response from a consultant on the subject or on the course support. The study of this problem was carried out on the basis of the existing database of the company "InfoTeacher". To determine the most promising courses, we used cluster data analysis using the R software environment. At the beginning, we calculated the optimal number of clusters according to the criterion of rocky scree, and then continued the cluster analysis using the k-means method. Thus, the main input parameters for building an interactive simulation model were identified. This model is a queuing system and was implemented in the GPSS World programming language. The parameters of the model were selected so that it was effective: to minimize the queues for consultation with the curator, while the curators should be loaded by at least 50%.


2021 ◽  
Author(s):  
Benjamin Kellenberger ◽  
Devis Tuia ◽  
Dan Morris

&lt;p&gt;Ecological research like wildlife censuses increasingly relies on data on the scale of Terabytes. For example, modern camera trap datasets contain millions of images that require prohibitive amounts of manual labour to be annotated with species, bounding boxes, and the like. Machine learning, especially deep learning [3], could greatly accelerate this task through automated predictions, but involves expansive coding and expert knowledge.&lt;/p&gt;&lt;p&gt;In this abstract we present AIDE, the Annotation Interface for Data-driven Ecology [2]. In a first instance, AIDE is a web-based annotation suite for image labelling with support for concurrent access and scalability, up to the cloud. In a second instance, it tightly integrates deep learning models into the annotation process through active learning [7], where models learn from user-provided labels and in turn select the most relevant images for review from the large pool of unlabelled ones (Fig. 1). The result is a system where users only need to label what is required, which saves time and decreases errors due to fatigue.&lt;/p&gt;&lt;p&gt;&lt;img src=&quot;https://contentmanager.copernicus.org/fileStorageProxy.php?f=gnp.0402be60f60062057601161/sdaolpUECMynit/12UGE&amp;app=m&amp;a=0&amp;c=131251398e575ac9974634bd0861fadc&amp;ct=x&amp;pn=gnp.elif&amp;d=1&quot; alt=&quot;&quot;&gt;&lt;/p&gt;&lt;p&gt;&lt;em&gt;Fig. 1: AIDE offers concurrent web image labelling support and uses annotations and deep learning models in an active learning loop.&lt;/em&gt;&lt;/p&gt;&lt;p&gt;AIDE includes a comprehensive set of built-in models, such as ResNet [1] for image classification, Faster R-CNN [5] and RetinaNet [4] for object detection, and U-Net [6] for semantic segmentation. All models can be customised and used without having to write a single line of code. Furthermore, AIDE accepts any third-party model with minimal implementation requirements. To complete the package, AIDE offers both user annotation and model prediction evaluation, access control, customisable model training, and more, all through the web browser.&lt;/p&gt;&lt;p&gt;AIDE is fully open source and available under https://github.com/microsoft/aerial_wildlife_detection.&lt;/p&gt;&lt;p&gt;&amp;#160;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;References&lt;/strong&gt;&lt;/p&gt;


Author(s):  
Yucen Kuang

Since Shanghai started the second phase of the elementary and middle school curriculum reform in 1998, teachers have been encouraged and expected to incorporate new technology to support teaching and learning, both in and out of the classrooms, so that students can get skills such as problem-solving, team-working, and time-management more efficiently. Consequently, in order to improve students' English reading comprehension skills, a brand new online learning platform named “Teaching Innovation Practice Platform” (TIPP) was developed and implemented to enhance English reading instruction at a public middle school in Shanghai in 2010. After several years of implementation, the platform has not only strengthened the interaction and communication between teachers and students but also improved students' learning. In the following sections, the current status of English reading instruction, the online learning platform TIPP and its application, as well as the impact on teaching and learning are described in detail.


2016 ◽  
pp. 1419-1444
Author(s):  
Laila N. Marouf ◽  
Omar E. M. Khalil

The knowledge management (KM) literature in general is short on field evidence concerning knowledge sharing (KS) practices in project management settings, where knowledge occupies a central place. In addition, research on KS enablers and barriers has largely overlooked the fact that individual characteristics may influence the choice to share knowledge. This research explored departmental KS practices, enablers and barriers at a Middle-Eastern project management company. It also investigated the influence of a number of individual characteristics on KS, enablers and barriers. The findings confirm that Knowledge is partially shared within departments, and the employees have varying views on KS enablers and barriers. Although many do not perceive organizational enablers as catalysts for KS, they somewhat believe that the information technology (IT) enablers do facilitate KS. The employees, however, do not believe that the identified individual, organizational and IT barriers hinder KS. In addition, gender, age, department type and job type have varying effects on the perceived KS practices, organizational enablers, and IT enablers and barriers. These findings and their implications are further discussed in the paper.


2004 ◽  
Vol 4 ◽  
pp. 442-448
Author(s):  
Wei Wei-Qi ◽  
Zhu Guang-Jin ◽  
Xu Cheng-Li ◽  
Han Shao-Mei ◽  
Qi Bao-Shen ◽  
...  

Physiology constants of adolescents are important to understand growing living systems and are a useful reference in clinical and epidemiological research. Until recently, physiology constants were not available in China and therefore most physiologists, physicians, and nutritionists had to use data from abroad for reference. However, the very difference between the Eastern and Western races casts doubt on the usefulness of overseas data. We have therefore created a database system to provide a repository for the storage of physiology constants of teen-agers in Beijing. The several thousands of pieces of data are now divided into hematological biochemistry, lung function, and cardiac function with all data manually checked before being transferred into the database. The database was accomplished through the development of a web interface, scripts, and a relational database. The physiology data were integrated into the relational database system to provide flexible facilities by using combinations of various terms and parameters. A web browser interface was designed for the users to facilitate their searching. The database is available on the web. The statistical table, scatter diagram, and histogram of the data are available for both anonym and user according to queries, while only the user can achieve detail, including download data and advanced search.


Author(s):  
Lorenzo Magnani ◽  
Emanuele Bardone

According to Raskin (2000), the way we interact with a product, what we do, and how it responds are what define an interface. This is a good starting definition in one important respect: an interface is not something given or an entirely predefined property, but it is the dynamic interaction that actually takes place when a product meets the users. More precisely, an interface is that interaction that mediates the relation between the user and a tool explaining which approach is necessary to exploit its functions. Hence, an interface can be considered a mediating structure. A useful exemplification of a mediating structure is provided by the so-called stigmergy. Looking at the animal-animal interactions, Raskin (2000) noted that termites were able to put up their collective nest, even if they did not seem to collaborate or communicate with each other. The explanation provided by Grassé (Susi et al., 2001) is that termites do interact with each other, even if their interactions are mediated through the environment. According to the stigmergy theory, each termite acts upon the work environment, changing it in a certain way. The environment physically encodes and stores the change made upon it so that every change becomes a clue that affects a certain reaction from it. Analogously, we might claim that an interface mediates the relation between the user and a tool affording him or her to use it a certain way1. Understanding the kind of mediation involved can be fruitfully investigated from an epistemological point of view. More precisely, we claim that the process of mediating can be understood better when it is considered to be an inferential one.


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