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Articles 1 - 30 of 165
Full-Text Articles in Physical Sciences and Mathematics
Analysis Porter's Five Forces Model On Airbnb, Osiany Nurlansa, Handaru Jati
Analysis Porter's Five Forces Model On Airbnb, Osiany Nurlansa, Handaru Jati
Elinvo (Electronics, Informatics, and Vocational Education)
This paper discusses about Airbnb. Airbnb is a company website that allows ordinary people to rent their residence as tourist accommodation. Anyone can rent rooms to suit their budget. The company established in 2008, and eight years later by a very rapid growth, the company reaches a turnover of millions of rooms per year. Airbnb analyzed using Porter's Five Forces Model. According to Porter, the competitive nature of the industry could be seen as a combination of top five strengths, namely Rivalry Among Existing Competitors, Threat of New Entrants, Threat of substitude Products or Services, Bargaining Power of Suppliers, Bargaining …
Analisis Competitive Force Dan Competitive Strategy Sistem Informasi Kuliner Di Indonesia (Studi Kasus : Kulina.Id), Damar Purba Pamungkas
Analisis Competitive Force Dan Competitive Strategy Sistem Informasi Kuliner Di Indonesia (Studi Kasus : Kulina.Id), Damar Purba Pamungkas
Elinvo (Electronics, Informatics, and Vocational Education)
Abstrak - Tujuan dari penulisan paper ini untuk menganalisis Competitive Force yang di hadapi oleh Kulina dan Competitive Strategy apakah yang dilakukan Kulina dalam mengatasi adanya competitive forces dalam menjalankan bisnisnya. Penulisan paper ini dilakukan untuk menganalisis Sistem Informasi Kulina dengan menggunakan Model Porter. Michael A. Porter menjelaskan lima kekuatan (five forces module) sebagai alat untuk menganalisis lingkungan persaingan industri. Keadaan persaingan perusahaan dalam suatu industri tergantung pada lima kekuatan persaingan dasar yaitu : Rivalry of Competitors, Threat of New Entrants, Threat of substitutes, Bargaining Power of Customers, dan Bargaining Power of Suppliers. Michael A. Porter …
Pengolahan Citra Untuk Identifikasi Telur Berdasarkan Ukuran, Syahrul Awalludin Sidiq
Pengolahan Citra Untuk Identifikasi Telur Berdasarkan Ukuran, Syahrul Awalludin Sidiq
Elinvo (Electronics, Informatics, and Vocational Education)
Salah satu Home Industri penyortir telur di Yogyakarta, adalah Tempel Ambarukmo. Penyortiran awalnya dilakukan secara manual tetapi membutuhkan waktu yang lama. Pengunaan mesin grading untuk mengatasi masalah tersebut, namun harga relatif mahal. Oleh karena itu, perlu adanya sistem otomatis untuk penyortiran telur sehingga menghemat waktu, tenaga, dan biaya. Penelitian ini bertujuan untuk mengembangkan suatu sistem yang mampu mendeteksi dan memisah telur berdasarkan ukuran menggunakan citra digital dengan media interface GUI (Graphical User Interface) yang memanfaatkan software matlab. Telur dikategorikan menjadi 5 kategori (Sangat Kecil, Kecil, Sedang, Besar, Sangat Besar). Dalam proyek akhir ini dirancang dengan menggunakan metode waterfall. Pengolahan citra …
Analisis Competitive Forces And Competitive Strategy Pada Sistem Informasi "Zalora.Co.Id", Fitria Ekarini
Analisis Competitive Forces And Competitive Strategy Pada Sistem Informasi "Zalora.Co.Id", Fitria Ekarini
Elinvo (Electronics, Informatics, and Vocational Education)
Analisis Sistem Informasi Zalora.co.id ini bertujuan untuk mengetahui seberapa kuatnya strategi persaingan yang disiapkan oleh Zalora.co.id untuk menghadapi kuatnya persaingan bisnis dengan perusahaan yang bergerak di bidang yang sama. Sehingga dapat dilihat kelebihan dan kekurangan dari Sistem Informasi ini. Analisis Sistem Informasi ini menggunakan model analisis competitive forces and Competitive Strategy. Dan untuk mengatasi lima kekuatan kompetitif tersebut, perusahaan dapat menerapkan competitive strategies. Pada Zalora yang merupakan situs web belanja kebutuhan fashion yang menawarkan produk-produk dari berbagai brand termuka, baik lokal maupun internasional ini dapat dikatakan sebagai online shop yang siap untuk bersaing dengan para kompetitor di bidang yang sama. …
Mixed-Initiative Personal Assistants, Joshua W. Buck, Saverio Perugini
Mixed-Initiative Personal Assistants, Joshua W. Buck, Saverio Perugini
Saverio Perugini
Specification and implementation of flexible human-computer dialogs is challenging because of the complexity involved in rendering the dialog responsive to a vast number of varied paths through which users might desire to complete the dialog. To address this problem, we developed a toolkit for modeling and implementing task-based, mixed-initiative dialogs based on metaphors from lambda calculus. Our toolkit can automatically operationalize a dialog that involves multiple prompts and/or sub-dialogs, given a high-level dialog specification of it. Our current research entails incorporating the use of natural language to make the flexibility in communicating user utterances commensurate with that in dialog completion …
Color Separation For Background Subtraction, Jiaqi Zhou
Color Separation For Background Subtraction, Jiaqi Zhou
Electronic Thesis and Dissertation Repository
Background subtraction is a vital step in many computer vision systems. In background subtraction, one is given two (or more) frames of a video sequence taken with a still camera. Due to the stationarity of the camera, any color change in the scene is mainly due to the presence of moving objects. The goal of background subtraction is to separate the moving objects (also called the foreground) from the stationary background. Many background subtraction approaches have been proposed over the years. They are usually composed of two distinct stages, background modeling and foreground detection.
Most of the standard background subtraction …
Implementation And Testing Of A Book Lookup System For The Robert E. Kennedy Library, Casey C. Sheehan
Implementation And Testing Of A Book Lookup System For The Robert E. Kennedy Library, Casey C. Sheehan
Computer Science and Software Engineering
The goal of this senior project centered around improving the quality of student and teacher experiences when visiting the library. The task of finding a book amongst the shelves is an arduous one, which I felt could be improved upon through implementation and testing of a Book Lookup system for the Cal Poly Robert E. Kennedy Library. Development for this project was done using a Python framework. Testing and earlier designs were also created using JavaScript and PHP. Repeated tests were conducted on the accuracy of the software and its ability to decrease user search-time when compared to conventional methods.
A System For Detecting Malicious Insider Data Theft In Iaas Cloud Environments, Jason Nikolai, Yong Wang
A System For Detecting Malicious Insider Data Theft In Iaas Cloud Environments, Jason Nikolai, Yong Wang
Research & Publications
The Cloud Security Alliance lists data theft and insider attacks as critical threats to cloud security. Our work puts forth an approach using a train, monitor, detect pattern which leverages a stateful rule based k-nearest neighbors anomaly detection technique and system state data to detect inside attacker data theft on Infrastructure as a Service (IaaS) nodes. We posit, instantiate, and demonstrate our approach using the Eucalyptus cloud computing infrastructure where we observe a 100 percent detection rate for abnormal login events and data copies to outside systems.
When The System Becomes Your Personal Docent: Curated Book Recommendations, Nevena Dragovic
When The System Becomes Your Personal Docent: Curated Book Recommendations, Nevena Dragovic
Boise State University Theses and Dissertations
Curation is the act of selecting, organizing, and presenting content most often guided by professional or expert knowledge. While many popular applications have attempted to emulate this process by turning users into curators, we put an accent on a recommendation system which can leverage multiple data sources to accomplish the curation task. We introduce QBook, a recommender that acts as a personal docent by identifying and suggesting books tailored to the various preferences of each individual user. The goal of the designed system is to address several limitations often associated with recommenders in order to provide diverse and personalized …
Towards Multipurpose Readability Assessment, Ion Madrazo
Towards Multipurpose Readability Assessment, Ion Madrazo
Boise State University Theses and Dissertations
Readability refers to the ease with which a reader can understand a text. Automatic readability assessment has been widely studied over the past 50 years. However, most of the studies focus on the development of tools that apply either to a single language, domain, or document type. This supposes duplicate efforts for both developers, who need to integrate multiple tools in their systems, and final users, who have to deal with incompatibilities among the readability scales of different tools. In this manuscript, we present MultiRead, a multipurpose readability assessment tool capable of predicting the reading difficulty of texts of varied …
Estimating Length Statistics Of Aggregate Fried Potato Product Via Electromagnetic Radiation Attenuation, Jesse Lovitt
Estimating Length Statistics Of Aggregate Fried Potato Product Via Electromagnetic Radiation Attenuation, Jesse Lovitt
Boise State University Theses and Dissertations
This work investigates the feasibility of using non-destructive testing, in particular radiation tomography, to recover length statistics from aggregates of fried batonnet cut potato. Non-destructive testing comprises a variety of useful techniques for determining properties of an object that might otherwise require altering or destroying the object physically. Tomography is a common form of non-destructive testing used primarily to infer properties internal to an object. This process involves exposing the object of interest to radiation and detecting the quantity of radiation energy that penetrates the object, usually resulting in a grey scale image.
To do this, an artificial data pipeline …
Tagamajig: Image Recognition Via Crowdsourcing, Gregory Martin Simpson
Tagamajig: Image Recognition Via Crowdsourcing, Gregory Martin Simpson
Masters Theses
The University of Tennessee, Knoxville (UTK) Library possesses thousands of unlabeled gray-scale photographs from the Smoky Mountains circa the 1920s - 1940s. Their current method of identifying and labeling attributes of the photographs is to do so manually. This is problematic both because of the scale of the collection as well as the reliance on an individual's limited knowledge of the area's numerous landmarks.
In the past few years, similar dilemmas have been tackled via an approach known as crowd computing. Some examples include Floating Forests, in which users are asked to identify and mark kelp forests in satellite images, …
Who's In And Who's Out?: What's Important In The Cyber World?, Tony M. Kelly
Who's In And Who's Out?: What's Important In The Cyber World?, Tony M. Kelly
HON499 projects
The aim of this paper is to offer an introduction to the exploding field of cybersecurity by asking what are the most important concepts or topics that a new member of the field of cybersecurity should know. This paper explores this question from three perspectives: from the realm of business and how the cyber world is intertwined with modern commerce, including common weaknesses and recommendations, from the academic arena examining how cybersecurity is taught and how it should be taught in a classroom or laboratory environment, and lastly, from the author’s personal experience with the cyber world. Included information includes …
Cultural Diversity In Artificial Societies: Case Studies Of The Maya Peoples, Roberto Ulloa
Cultural Diversity In Artificial Societies: Case Studies Of The Maya Peoples, Roberto Ulloa
Electronic Thesis and Dissertation Repository
The existence of cultural diversity in a connected world is paradoxical given that all individuals constantly interact and share information, and that individuals are all part of one giant network of connections. In the long term, it seems logical to assume that everybody should hold the same cultural information and, therefore, the same culture. Yet cultural diversity is still manifest around the globe. Cultural diversity as a phenomenon becomes even more puzzling when we take into account how it survives catastrophic events which regularly befall societies, such as invasions, natural disasters, and civil wars. In this thesis, agent-based computer simulations …
Further Evidence Of The Contribution Of The Ear Canal To Directional Hearing: Design Of A Compensating Filter, Andrea Martelloni, Davide Andrea Mauro Phd, Antonio Mancuso
Further Evidence Of The Contribution Of The Ear Canal To Directional Hearing: Design Of A Compensating Filter, Andrea Martelloni, Davide Andrea Mauro Phd, Antonio Mancuso
Davide Andrea Mauro
It has been proven, and it is well documented in literature, that the directional response in HRTFs comes largely from the effect of the pinnae. However, few studies have analysed the contribution given by the remaining part of the external ear, particularly the ear canal. This work investigates the directionally dependent response of the modelled ear canal of a dummy head, assuming that the behaviour of the external ear is sufficiently linear to be approximated by an LTI system. In order to extract the ear canal's transfer function, two critical microphone placements (at the eardrum and at the beginning of …
Self-Organizing The Space Of Vocal Imitations, Davide Rocchesso, Davide Andrea Mauro Phd
Self-Organizing The Space Of Vocal Imitations, Davide Rocchesso, Davide Andrea Mauro Phd
Davide Andrea Mauro
The human voice is a powerful instrument for producing sound sketches. The sonic space that can be spanned with the voice is vast and complex and, therefore, it is difficult to organize and explore. In this contribution, we report on our attempts at extracting the principal components from a database of 152 short excerpts of vocal imitations. We describe each excerpt by a set of statistical audio features and by a measure of similarity of the envelope to a small number of prototype envelopes. We apply k-means clustering on a space whose dimensionality has been reduced by singular value decomposition, …
Analyzing And Organizing The Sonic Space Of Vocal Imitation, Davide Andrea Mauro Phd, D. Rocchesso
Analyzing And Organizing The Sonic Space Of Vocal Imitation, Davide Andrea Mauro Phd, D. Rocchesso
Davide Andrea Mauro
The sonic space that can be spanned with the voice is vast and complex and, therefore, it is difficult to organize and explore. In order to devise tools that facilitate sound design by vocal sketching we attempt at organizing a database of short excerpts of vocal imitations. By clustering the sound samples on a space whose dimensionality has been reduced to the two principal components, it is experimentally checked how meaningful the resulting clusters are for humans. Eventually, a representative of each cluster, chosen to be close to its centroid, may serve as a landmark in the exploration of the …
Sound And The City: Multi-Layer Representation And Navigation Of Audio Scenarios, Luca A. Ludovico, Davide Andrea Mauro Phd
Sound And The City: Multi-Layer Representation And Navigation Of Audio Scenarios, Luca A. Ludovico, Davide Andrea Mauro Phd
Davide Andrea Mauro
IEEE 1599-2008 is an XML-based standard originally intended for the multi-layer representation of music information. Nevertheless, it is versatile enough to describe also information different from traditional scores written according to the Common Western Notation (CWN) rules. This paper will discuss the application of IEEE 1599-2008 to the audio description of paths and scenarios from the urban life or other landscapes. The standard we adopt allows the multilayer integration of textual, symbolical, structural, graphical, audio and video contents within a unique synchronized environment. Besides, for each kind of media, a number of digital objects is supported. As a consequence, thanks …
Puremx: Automatic Transcription Of Midi Live Music Performances Into Xml Format, Stefano Baldan, Luca A. Ludovico, Davide Andrea Mauro Phd
Puremx: Automatic Transcription Of Midi Live Music Performances Into Xml Format, Stefano Baldan, Luca A. Ludovico, Davide Andrea Mauro Phd
Davide Andrea Mauro
This paper addresses the problem of the real-time automatic transcription of a live music performance into a symbolic format based on XML. The source data are given by any music instrument or other device able to communicate with Pure Data by MIDI. Pure Data is a free, multi-platform, real-time programming environment for graphical, audio, and video processing. During a performance, music events are parsed and their parameters are evaluated thanks to rhythm and pitch detection algorithms. The final step is the creation of a well-formed XML document, validated against the new international standard known as IEEE 1599. This work will …
On Binaural Spatialization And The Use Of Gpgpu For Audio Processing, Davide Andrea Mauro Phd
On Binaural Spatialization And The Use Of Gpgpu For Audio Processing, Davide Andrea Mauro Phd
Davide Andrea Mauro
3D recordings and audio, namely techniques that aim to create the perception of sound sources placed anywhere in 3 dimensional space, are becoming an interesting resource for composers, live performances and augmented reality. This thesis focuses on binaural spatialization techniques. We will tackle the problem from three different perspectives. The first one is related to the implementation of an engine for audio convolution, this is a real implementation problem where we will confront with a number of already available systems trying to achieve better results in terms of performances. General Purpose computing on Graphic Processing Units (GPGPU) is a promising …
Analyzing And Organizing The Sonic Space Of Vocal Imitation, Davide Andrea Mauro Phd, D. Rocchesso
Analyzing And Organizing The Sonic Space Of Vocal Imitation, Davide Andrea Mauro Phd, D. Rocchesso
Davide Andrea Mauro
The sonic space that can be spanned with the voice is vast and complex and, therefore, it is difficult to organize and explore. In order to devise tools that facilitate sound design by vocal sketching we attempt at organizing a database of short excerpts of vocal imitations. By clustering the sound samples on a space whose dimensionality has been reduced to the two principal components, it is experimentally checked how meaningful the resulting clusters are for humans. Eventually, a representative of each cluster, chosen to be close to its centroid, may serve as a landmark in the exploration of the …
Puremx: Automatic Transcription Of Midi Live Music Performances Into Xml Format, Stefano Baldan, Luca A. Ludovico, Davide Andrea Mauro Phd
Puremx: Automatic Transcription Of Midi Live Music Performances Into Xml Format, Stefano Baldan, Luca A. Ludovico, Davide Andrea Mauro Phd
Davide Andrea Mauro
This paper addresses the problem of the real-time automatic transcription of a live music performance into a symbolic format based on XML.
The source data are given by any music instrument or other device able to communicate with Pure Data by MIDI. Pure Data is a free, multi-platform, real-time programming environment for graphical, audio, and video processing. During a performance, music events are parsed and their parameters are evaluated thanks to rhythm and pitch detection algorithms. The final step is the creation of a well-formed XML document, validated against the new international standard known as IEEE 1599.
This work will …
Further Evidence Of The Contribution Of The Ear Canal To Directional Hearing: Design Of A Compensating Filter, Andrea Martelloni, Davide Andrea Mauro Phd, Antonio Mancuso
Further Evidence Of The Contribution Of The Ear Canal To Directional Hearing: Design Of A Compensating Filter, Andrea Martelloni, Davide Andrea Mauro Phd, Antonio Mancuso
Davide Andrea Mauro
It has been proven, and it is well documented in literature, that the directional response in HRTFs comes largely from the effect of the pinnae. However, few studies have analysed the contribution given by the remaining part of the external ear, particularly the ear canal. This work investigates the directionally dependent response of the modelled ear canal of a dummy head, assuming that the behaviour of the external ear is sufficiently linear to be approximated by an LTI system. In order to extract the ear canal's transfer function, two critical microphone placements (at the eardrum and at the beginning of …
Head In Space : A Head-Tracking Based Binaural Spatialization System, Luca A. Ludovico, Davide Andrea Mauro Phd, Dario Pizzamiglio
Head In Space : A Head-Tracking Based Binaural Spatialization System, Luca A. Ludovico, Davide Andrea Mauro Phd, Dario Pizzamiglio
Davide Andrea Mauro
This paper discusses a system capable of detecting the position of the listener through a head-tracking system and rendering a 3D audio environment by binaural spatialization. Head tracking is performed through face recognition algorithms which use a standard webcam, and the result is presented over headphones, like in other typical binaural applications. With this system users can choose an audio file to play, provide a virtual position for the source in an euclidean space, and then listen to the sound as if it is coming from that position. If they move their head, the signal provided by the system changes …
On Binaural Spatialization And The Use Of Gpgpu For Audio Processing, Davide Andrea Mauro Phd
On Binaural Spatialization And The Use Of Gpgpu For Audio Processing, Davide Andrea Mauro Phd
Davide Andrea Mauro
3D recordings and audio, namely techniques that aim to create the perception of sound sources placed anywhere in 3 dimensional space, are becoming an interesting resource for composers, live performances and augmented reality. This thesis focuses on binaural spatialization techniques.
We will tackle the problem from three different perspectives. The first one is related to the implementation of an engine for audio convolution, this is a real implementation problem where we will confront with a number of already available systems trying to achieve better results in terms of performances. General Purpose computing on Graphic Processing Units (GPGPU) is a promising …
Growing The Practice Of Vocal Sketching, S. Delle Monache, D. Rocchesso, S. Baldan, Davide Andrea Mauro Phd
Growing The Practice Of Vocal Sketching, S. Delle Monache, D. Rocchesso, S. Baldan, Davide Andrea Mauro Phd
Davide Andrea Mauro
Sketch-thinking in the design domain is a complex representational activity, emerging from the reflective conversation with the sketch. A recent line of research on computational support for sound design has been focusing on the exploitation of voice, and especially vocal imitations, as effective representation strategy for the early stage of the design process. A set of introductory exercises on vocal sketching, to probe the communication effectiveness of vocal imitations for design purposes, are presented and discussed, in the scope of the research-through-design workshop activities of the EU project SkAT-VG.
Marim: Mobile Augmented Reality For Interactive Manuals, Tam Nguyen, Dorothy Tan, Bilal Mirza, Jose Sepulveda
Marim: Mobile Augmented Reality For Interactive Manuals, Tam Nguyen, Dorothy Tan, Bilal Mirza, Jose Sepulveda
Tam Nguyen
In this work, we present a practical system which uses mobile devices for interactive manuals. In particular, there are two modes provided in the system, namely, expert/trainer and trainee modes. Given the expert/trainer editor, experts design the step-by-step interactive manuals. For each step, the experts capture the images by using phones/tablets and provide visual instructions such as interest regions, text, and action animations. In the trainee mode, the system utilizes the existing object detection and tracking algorithms to identify the step scene and retrieve the respective instruction to be displayed on the mobile device. The trainee then follows the displayed …
Static Saliency Vs. Dynamic Saliency: A Comparative Study, Tam Nguyen, Mengdi Xu, Guangyu Gao, Mohan Kankanhalli, Qi Tian, Shuicheng Yan
Static Saliency Vs. Dynamic Saliency: A Comparative Study, Tam Nguyen, Mengdi Xu, Guangyu Gao, Mohan Kankanhalli, Qi Tian, Shuicheng Yan
Tam Nguyen
Recently visual saliency has attracted wide attention of researchers in the computer vision and multimedia field. However, most of the visual saliency-related research was conducted on still images for studying static saliency. In this paper, we give a comprehensive comparative study for the first time of dynamic saliency (video shots) and static saliency (key frames of the corresponding video shots), and two key observations are obtained: 1) video saliency is often different from, yet quite related with, image saliency, and 2) camera motions, such as tilting, panning or zooming, affect dynamic saliency significantly.
Motivated by these observations, we propose a …
Seeing Human Weight From A Single Rgb-D Image, Tam Nguyen, Jiashi Feng, Shuicheng Yan
Seeing Human Weight From A Single Rgb-D Image, Tam Nguyen, Jiashi Feng, Shuicheng Yan
Tam Nguyen
Human weight estimation is useful in a variety of potential applications, e.g., targeted advertisement, entertainment scenarios and forensic science. However, estimating weight only from color cues is particularly challenging since these cues are quite sensitive to lighting and imaging conditions. In this article, we propose a novel weight estimator based on a single RGB-D image, which utilizes the visual color cues and depth information. Our main contributions are three-fold.
First, we construct the W8-RGBD dataset including RGB-D images of different people with ground truth weight.
Second, the novel sideview shape feature and the feature fusion model are proposed to facilitate …
Salient Object Detection Via Objectness Proposals, Tam Nguyen
Salient Object Detection Via Objectness Proposals, Tam Nguyen
Tam Nguyen
Salient object detection has gradually become a popular topic in robotics and computer vision research. This paper presents a real-time system that detects salient objects by integrating objectness, foreground, and compactness measures. Our algorithm consists of four basic steps. First, our method generates the objectness map via object proposals. Based on the objectness map, we estimate the background margin and compute the corresponding foreground map which prefers the foreground objects. From the objectness map and the foreground map, the compactness map is formed to favor the compact objects. We then integrate those cues to form a pixel-accurate saliency map which …