Web-Marketing 3.0 in Social Network using MDA Approach and Pulse Detector

Web-Marketing 3.0 in Social Network using MDA Approach and Pulse Detector

Lamlili El Mazoui Nadori Yasser* EHEIO School of engineering EHEIO Laboratory

Oujda, Morocco

Esbai Redouane Mohammed First University MATSI Laboratory

Oujda, Morocco

Lamlili El Mazoui Nadori Mohamed

Mohammed First University LaMSD Laboratory

Oujda, Morocco

Boutayeb Wiam Mohammed First University LaMSD Laboratory

Oujda, Morocco

AbstractIn this paper we have focused on the evolution of the Web-marketing meaning the passage of the Web- marketing 2.0 to 3.0, baptized " Semantic Web-marketing ", the main idea being to make easier to the Internet user to use a huge and disrupting stream of information and make it organized and easily accessible.

As so, we have chosen to use the N-tiers applications and the MDA (Model Driving Architecture) transformation. In this paper we are going to present a model-driven approach to the development of N-tiers web applications based on the UML class diagram. The transformation language is the MOF 2.0 QVT (Meta-Object Facility 2.0 Query-View-Transformation) standard which defines the meta-model for the development of model transformation.

Then we introduced a webcam-pulse-detector to detect the heart beat of the clients by an imaging solution using ambient light for catching their preferences.

Keywords: Web-Marketing, Transformation by modeling, N- tiers architecture, Transformation rules, MOF 2.0 QVT, Meta- model, webcam-pulse-detector, ambient light.

1. INTRODUCTION

   The Webmarketing 3.0 is the way to attract the clients by different ways, as so we introduced a innovated technique called Detection of the cardio-vascular pulse wave and can be done by means such as variations in air pressure, impedance, or strain. Photo-plethysmography (PPG)[1], introduced in the 1930s using light reflectance or transmission and is the least expensive method and simple to use. PPG is based on the principle that blood absorbs light more than surrounding tissue so variations in blood volume affect transmission or reflectance correspondingly. Applications of PPG include monitoring of oxygen saturation (pulse oxymetry), heart (HR) and respiration (RR) rates, blood pressure, cardiac output, assessment of autonomic functions and detection of peripheral vascular diseases. Remote, non-contact pulse oxymetry and PPG imaging have been explored only relatively recently [2, 3]. In this work we are going to transform an UML Model concerning an advertisement in a social network to generate a source code.

   In a recent work [21], the authors have developed a source and a target meta-models. The first was a PIM meta-model specific to class diagrams. The second was a PSM meta- model for MVC2 (Model-View-Controller) web applications (particularly Struts), then they have elaborated a transformation rules using the approach by programming. The purpose of our contribution is to produce and generate an N-tiers PSM model, implementing MVC2, DI (Dependency Injection) and DAO (Data Access Object) patterns, from the class diagram. In this case, we elaborate a number of transformation rules using the approach by modeling and MOF 2.0 QVT[4], as transformation language, to permit the generation of an XML file that can be used to produce the required code of the target application. The advantage of this approach is the bidirectional execution of transformation rules[5].

2. MODEL DRIVEN ARCHITECTURE (MDA)

   In November 2000, OMG, a consortium of over 1 000 companies, initiated the MDA approach. The key principle of MDA is the use of models at different phases of application development. Specifically, MDA advocates the development of requirements models (CIM), analysis and design (PIM) and (PSM) code [6].

   The MDA architecture is divided into four layers. In the first layer, we find the standard UML (Unified Modeling Language), MOF (Meta-Object Facility) and CWM (Common Warehouse Meta-model). In the second layer, we find a standard XMI (XML Metadata Interchange), which enables the dialogue between middlewares (Java, CORBA, .NET and web services). The third layer contains the services that manage events, security, directories and transactions. The last layer provides frameworks which are adaptable to different types of applications namely Finance, Telecommunications, Transport, medicine, E- commerce and Manufacture, etc.).

   The major objective of MDA is to develop sustainable models, those models are independent from the technical details of platforms implementation (J2EE, DotNet, PHP

   or other), in order to enable the automatic generation of all codes and applications leading to a significant gain in productivity. MDA includes the definition of several standards, including UML [8], MOF [12] and XMI [14].

3. N-TIERS ARCHITECTURE

   N-tiers application architecture provides a model for developers to create a flexible and reusable application and provides some advantages that are vital to the business continuity of the enterprise. Typical features of a real life N-tiers may include the Security, Availability, Scalability, Manageability, Easy Maintenance and Data Abstraction. To most people, an N-tiers application is anything that is divided into discrete logical parts. The most common choice is a three-part breakdown presentation, business logic, and data access although other possibilities exist.

   In this paper, we are using the following layers:

   Fig.1 N-tiers Layers

   Each Layer can be developed independently of the other provided that it adheres to the standards and communicates with the other layers.

   1. The presentation Layer with MVC2 pattern

      Along time ago, web applications were very simple and the technology that was used to develop them was Common Gateway Interface (CGI). As applications became more complex, the defects and limits of this technology have emerged. Slowness and considerable consumption of memory. Therefore, the J2EE platform applies the architecture MVC2 [7]. In this paradigm, the model represents the information system consisting of javaBeans. The view represents the HTML pages returned to the user, and consists of JavaServerPage (JSP). The Controller is the glue between the two and it is composed of servlets. In short, during the early 80s with smalltalk, MVC was widespread in the field of object development. Many frameworks that implements MVC2 pattern have emerged, among them: Struts [1], PureMVC [19], Gwittir [14], SpringMVC [15], Zend [18], ASP.NET MVC2 [5].

      Struts remains the most mature solution that has earned the trust of most developers, that is why we have taken it into account in our source meta-model.

   2. The Business layer with Data Transfer Object and Dependency Injection patterns

   In an article written in early 2004, Martin Fowler asked what aspect of control is being inverted. He concluded that it is the acquisition of dependent objects that is being inverted. Based on that revelation, he coined a better name for inversion of control: dependency injection [19].

   In other words, Dependency Injection is a worthwhile concept used within applications that we develop. Not only can it reduce coupling between components, but it also saves us from writing boilerplate factory creation code over and over again. Many frameworks that implements DI pattern have emerged, among them: Spring [15], Symfony dependency injection [17], Spring.NET [6], EJB, PicoContainer [13]. (We have used some Spring classes in our source meta-model).

4. THE WEBCAM-PULSE-DETECTOR PROCESS

   A python code that detects te heart-rate of an individual using a common webcam or network IP camera. Tested on OSX 10.7 (Lion), Ubuntu 13.04 (Ringtail), and Windows 7.Inspired by reviewing recent work on Eulerian Video Magnification, with motivation to implement something visually comparable (though not necessarily identical in formulation) to their pulse detection examples using Python and OpenCV. This goal is comparable to those of a few previous efforts in this area (such as https://github.com/mossblaser/HeartMonitor).This code was developed at NASA Glenn Research Center in support of OpenMDAO, under the Aeronautical Sciences Project in NASA's Fundamental Aeronautics Program, as well as the Crew State Monitoring Element of the Vehicle Systems Safety Technologies Project, in NASAs Aviation Safety Program. A list of other open-source NASA codes can be found at code.nasa.gov.

   This application uses OpenCV to find the location of the user's face, then isolate the forehead region. Data is collected from this location over time to estimate the user's heart rate. This is done by measuring average optical intensity in the forehead location, in the subimage's green channel alone (a better color mixing ratio may exist, but the blue channel tends to be very noisy). Physiological data can be estimated this way thanks to the optical absorption characteristics of (oxy-). With good lighting and minimal noise due to motion, a stable heartbeat should be isolated in about 15 seconds. Other physiological waveforms (such as Mayer waves) should also be visible in the raw data stream.Once the user's heart rate has been estimated, real-time phase variation associated with this frequency is also computed. This allows for the heartbeat to be exaggerated in the post-process frame rendering, causing the highlighted forehead location to pulse in sync with the user's own heartbeat.

   Support for detection on multiple simultaneous individuals in a single camera's image stream is definitely possible, but at the moment only the information from one face is extracted for analysis.

   Fig 2. Signals corresponding power spectra

5. Transformation process from UML to N-tiers

   implementation

   CRUD operations (Create, Remove, Update, and Display) are most commonly implemented in all systems. That is why we have taken into account in our transformation rules these types of transactions.

   We first developed EMOF models corresponding to our source and target meta-models, and then we implemented the algorithm using the transformation language QVT Operational Mappings. To validate our transformation rules, we conducted several tests. For example, we considered the class diagram (see Figure 7). After applying the transformation on the UML model, composed by the classes User and advertissment, we generated the target model.

   Fig. 4 UML instance model

   This Figure represents the first part of the code of the transformation of UML model source to N-tiers target model.

   Fig 3. A transformation code UML2CRUD

   The entry point of the transformation is the method main. This method makes the correspondence between all the elements of the UMLPackage type of the input model and the element of the CrudProjectPackage type of the output model. The objective of the second part of this code is to transform a UML package into N-tiers package, by creating the elements of type package Dao, Business and Presentation. It is a question of transforming each class of package UML to Jsp page and Action in the View package, to DTO, IService and ServiceImpl in the Business package, and to Pojo, IDao and DaoImpl in the Dao package, without forgetting to give names to the different packages.

   B.Result:

   Fig. 5 Generated PSM N-tiers Web model

   The first element in the generated PSM model is UIPackage which includes viewPackage that contains the JSPs, namely DisplayUserPage.jsp, Display- AdvertissmentPage.jsp,CreateUserPage.jsp, CreateAdvertissmentPage.jsp, UpdateUserPage.jsp, and UpdateAdvertissmentPage.jsp. Since the operation of the removal requires any form, we'll go to the controllerPackage element, which contains a single element ActionMapping. The latter contains eighteen delegating action proxy whose names are respectively DisplayXAction, CreateXAction, UpdateXAction, RemoveXAction, CreateXEndAction, UpdateXEnd- Action, where X should be replaced by User, and Advertissment. Operations for creation and update, add forms to enter new values. For this reason, we add CreateXEndAction and UpdateXEndAction.

   The second element in the generated PSM model is businessPackage which includes three services interfaces, three services implementations and three Dtos objects correspond to the two objects User and Advertissment. The last element in the generated PSM model is DaoPackage which contains three Pojos objects that contains their attributes, three Daos interfaces that contains methods with their parameters and their implementations.

   Fig. 6 Sample of the generated Web site

6. Conclusion

In this paper, we applied the MDA approach to generate the N-tiers web application based on UML class diagram to generate a skeleton of a social network and create appropriate advertisements to the users in function of them profiles.

This involves developing all meta-classes needed to be able to generate an N-tiers application respecting a MVC2, DI and DAO patterns, then we applied the approach by modeling and used the MOF 2.0 QVT standard as a transformation language. The transformation rules defined allow browsing the source model instance class diagram, and generating, through these rules, an XML file containing layers of N-tiers architecture according to our target model. This file can be used to produce the necessary code of the target application. The algorithm of transformation manages all CRUD operations. Moreover, it can be re-used with any kind of methods represented in the UML class diagram. In the future, this work should be extended to allow the generation of other components of Web application besides the configuration files. For instance, we will be able to provide part of user interface. Afterward we can consider integrating other execution platforms like PHP and DotNET.

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