International Journal of Computer Techniques

1-5

Authors: - IJCTOmrani Takwa,Chibani Rhaimi Belgacem,Dallali Adel

To understand an incident crime case and achieve the consistent electronic evidence, the investigator needs to deal with an investigation tutorial. In this paper, we study and compare some of mainly accepted digital investigation models. Then we check the investigation model accuracy by testing the main rules availability. A new model is developed which merges the former models and seeks to meet some constraints. This can help investigators to achieve electronic evidence in illegal manner and in understandable format to be presented to the court.

1-5

Authors: - IJCTN.Roja Ramani, A.Stenila

An research of reliable and timely data transmission is essential for wireless sensor networks (WSNs) employed in scenarios like to information must be available for control development applications. To reach a maximum efficiency, cross layer interaction is a major design paradigm to exploit the complex interaction among the layers of the protocol stack. This is challenging because latency, reliability, and energy are at transmission, and resource constrained nodes support only simple algorithms that ensure give the idea for application protocol services.

1-5

Authors: - IJCTBhavana Gujarkar,S.M.Borkar

As the renewable sources are whether dependant like it has daily and seasonal patterns which results in difficulties of regulating the output power to cope with the load demand. Combining the renewable energy generation with energy storage bank & ac power from substation will enable the power generated from a renewable energy sources to be more reliable, affordable and used more efficiently.Emergency and standby power systems are designed to provide an alternate source of power if the normal source of power, most often the serving utility, if fails. As reliability of these types of systems is critical and good design practices are essential. RES’s based solar systems are a potentially significant solution to rural ac electricity needs for continuity of electrical supply. In order to increase the efficiency of power we have design module of dual axis solar tracker.

1-9

Authors: - IJCTMrs. Sangeetha Lakshmi .G, Ms. Arun kumari .G

A location-aware news feed (LANF) system generates news feeds for a mobile user based on her spatial preference her current location and future locations) and non-spatial preference (i.e., her interest). Existing LANF systems simply send the most relevant geo-tagged messages to their users. Unfortunately, the major limitation of such an existing approach is that, a news feed may contain messages related to the same location (i.e., point-of-interest) or the same category of locations (e.g., food, entertainment or sport). We argue that diversity is a very important feature for location-aware news feeds because it helps users discover new places and activities. In this paper, we propose D-MobiFeed; a new LANF system enables a user to specify the minimum number of message categories (h) for the messages in a news feed. In D-MobiFeed, our objective is to efficiently schedule news feeds for a mobile user at her current and predicted locations, such that (i) each news feed contains messages belonging to at least h different categories, and (ii) their total relevance to the user is maximized. To achieve this objective, we formulate the problem into two parts, namely, a decision problem and an optimization problem. For the decision problem, we provide an exact solution by modeling it as a maximum flow problem and proving its correctness. The optimization problem is solved by our proposed three-stage heuristic algorithm. We conduct a user study and experiments to evaluate the performance of D-MobiFeed using a real data set crawled from Foursquare. Experimental results show that our proposed three-stage heuristic scheduling algorithm outperforms the brute-force optimal algorithm by at least an order of magnitude in terms of running time and the relative error incurred by the heuristic algorithm is below 1%. D-MobiFeed with the location prediction method effectively improves the relevance, diversity, and efficiency of news feeds.

1-9

Authors: - IJCTMs. Asma Banu R., Mrs. Shoba S. A

To improve the performance of software engineering processes and imperative to identify and eliminate rework that could have been avoided. While security or its absence is a property of running software many aspects of software requirements, design, implementation and testing contribute to the presence or absence of security in the finished product. Software is continues to function correctly under malicious attack. Verification and validation (V&V) techniques like security testing, code review and formal verification are becoming effective means to reduce the number of post release vulnerabilities in software products. The aim of reduce the dimensionality, removing irrelevant data, increasing learning accuracy and improving result comprehensibility. The feature subset selection algorithm and support vector machine as involves identifying a subset of the most useful features that produces compatible results as the original entire set of features. A feature subset selection algorithm may be evaluated from both the efficiency and effectiveness points of view. A feature subset selection algorithm is used for software vulnerabilities such as verification and validation. The support vector machines are supervised learning models with associated learning algorithms that analyze data and anomaly detection, predict the vulnerabilities in software. The used for classification and regression analysis to result

1-9

Authors: - IJCTMrs. Sandhiya V., Ms. Abarna N.

bjective is to design and develop an intrusion detection and response model for Mobile Ad hoc Networks (MANET). Mobile ad hoc networks are infrastructure-free, pervasive and ubiquitous in nature, without any centralized authority. These unique MANET characteristics present several changes to secure them. The proposed security model is called the Intrusion Detection and Response for Mobile Ad hoc Networks (IDRMAN). The goal of the proposed model is to provide a security framework that will detect various attacks and take appropriate measures to control the attack automatically. This model is based on identifying critical system parameters of a MANET that are affected by various types of attacks, and continuously monitoring the values of these parameters to detect and respond to attacks. Many number of intrusion detection systems have been discovered to handle the uncertain activity in mobile ad hoc networks. This dissertation emphasized on proposed fuzzy based intrusion detection systems in mobile ad hoc networks and presented their effectiveness to identify the intrusions. This dissertation also examines the drawbacks of fuzzy based intrusion detection systems and discussed the future directions in the field of intrusion detection for mobile ad hoc networks

1-8

Authors: - IJCTMrs. Vidhya A., Ms. Abarna N.

Networks are getting larger and more complex, yet administrators rely on rudimentary tools such as ping and trace route to debug problems. We propose an automated and systematic approach for testing and debugging networks called “Automatic Test Packet Generation” (ATPG). ATPG reads router configurations and generates a device-independent model. The model is used to generate a minimum set of test packets to (minimally) exercise every link in the network or (maximally) exercise every rule in the network. Test packets are sent periodically, and detected failures trigger a separate mechanism to localize the fault. ATPG can detect both functional (e.g., incorrect firewall rule) and performance problems (e.g., congested queue). ATPG complements but goes beyond earlier work in static checking (which cannot detect liveness or performance faults) or fault localization (which only localize faults given liveness results). We describe our prototype ATPG implementation and results on two real-world data sets: Stanford University’s backbone network and Internet2. We find that a small number of test packets suffice to test all rules in these networks: For example, 4000 packets can cover all rules in Stanford backbone network, while 54 are enough to cover all links. Sending 4000 test packets 10 times per second consume less than 1% of link capacity. ATPG code and the data sets are publicly available

1-4

Authors: - IJCTA.Senthil Kumar, R.Sathya.

Malicious and selfish behaviors represent a serious threat against routing in disruption tolerant networks. Due to the unique network characteristics, designing a misbehavior detection scheme in DTN is regarded as a great challenge. In this paper, we propose iTrust, a probabilistic misbehavior detection scheme, for secure DTN routing toward efficient trust establishment. Selfish node B receives the packets from node A but launches the black hole attack by refusing to forward the packets to the next hop receiver C. Since there may be no neighboring nodes at the moment that B meets C, the misbehavior cannot be detected due to lack of witness, which renders the monitoring-based misbehavior detection less. This research Proposal Further includes The concepts of contact schedules, contact capacity and Link metrics. In addition the proposed aigorithm C T P A B En facilitates encrcyption functionality based on the user needs.The number of users in the DTN is limited and can be scalable in the future.

1-8

Authors: - IJCTMs. Sangeetha .R, Mrs. Sangeetha Lakshmi G.

With the rapid development of Internet, more and more organizations connect their databases to the Internet for resource sharing. However, due to developers' lack of knowledge of all possible attacks, web applications become vulnerable to multiple attacks. Thus the network databases could face multiple threats. Web applications generally consist of a three tier architecture where database is in the third pole, which is the most valuable asset in any organization. SQL injection is an attack technique in which specially crafted input string is entered in user input field. It is submitted to server and result is returned to the user. In SQL injection vulnerability, the database server is forced to execute malicious operations which may cause the data loss or corruption, denial of access, and unauthentic access to sensitive data by crafting specific inputs. An attacker can directly compromise the database, and that is why this is a most threatening web attack. SQL injection attack occupies first position in top ten vulnerabilities as specified by Open Web Application Security Project. It is probably the most common Website vulnerability today. Current scenarios which provide solutions to SQL injection attack either have limited scope i.e. Can‘t be implemented across all platforms, or do not cover all types of SQL injection attacks. In this work we implement Message Authentication Code (MAC) based solution against SQL injection attacks. The model works both on client and server side. Client side implements a filter function and server side is based on information theory. MAC of static and dynamic queries is compared to detect SQL injection attack.

1-7

Authors: - IJCTMs. Kalpanagayathri M., Ms. Sangeetha Lakshmi G.

Although mobile devices include accessibility features available for visually impaired users, the user interface of the majority of the mobile apps is designed for sighted people. It is clear that "Design for Usability" differs depending if the final user is a sighted user or a visually impaired user. This paper introduces the concept of "Low vision Mobile App Portal", which provides a way to access mobile apps specifically designed for visually impaired users. Some design aspects will be described. Preliminary results show some of the low vision controls specifically design for visually impaired users.

1-8

Authors: - IJCTMrs. Elavarasi J, Ms. Lavanya S.

Wireless Sensor Networks (WSN) has been a focal point for research for quite a few years. WSN enables novel and attractive solutions for information gathering across the spectrum of Endeavour including transportation, business, health-care, industrial automation, and environmental monitoring. Clouds are mainly used for storage processing that provides infrastructure, applications and infrastructure. While combining these two technology helps in easy management of remotely connected sensor nodes and the data generated by these sensor nodes. In this field WSN integrated with cloud computing that enables several applications. A sensor network is a group of specialized transducers with a communications infrastructure intended to monitor and record conditions at diverse locations. Generally observed parameters are temperature, humidity, pressure, wind direction and speed, illumination intensity, vibration intensity, sound intensity, power-line voltage, chemical concentrations, pollutant levels and vital body functions. Here this research mainly focused to observe the techniques which are proposed N care system with using WSN integrated Cloud in recent years and evaluated with basic outline metrics and compare each system performance based on the different situation.

1-8

Authors: - IJCTMs. Ramya R, Ms. Lavanya S.

A wireless sensor network (WSN) is becoming very popular technology. Wireless networking which is comprised on number of numerous sensors and they are interlinked or connected with each other for performing the same function collectively or cooperatively for the sake of checking and balancing the environmental factors. This type of networking is called as Wireless sensor networking. A wireless sensor network (WSN) consists of a group of self-organizing, lightweight sensor nodes that are used to cooperatively monitor physical or environmental conditions. Each sensor node in a WSN is equipped with a radio transmitter, several sensors, a battery unit and a microcontroller.Because of the size and cost constraints on sensor nodes, they are limited by energy, bandwidth, memory and other resources. Any protocol design for WSNs needs to consider the limitations of sensor nodes carefully. In UWSNs, turbulent conditions of the environments where the sensor nodes are deployed can cause the nodes to die. A contributing effort to explore the reliability issues in multimodal fusion sensor networks. We presented the system reliability for the case of two types of sensors and three types of sensors. WSNs hold the promise of many applications in the area of monitoring and control systems. Many properties of the environment can be observed by the monitoring system with the advent of cheap and tiny sensors. All these applications are meant for the specific purposes, and therefore maintaining data transport reliability is one of the major concern and the most important challenge. To address the reliability, we survey the various existing techniques; each of them has its own unique working to ensure the reliability. Some of the techniques use retransmission mechanism while others use redundant information for insuring the reliability.In the proposed process focus on the routing problem that affects the reliability of WSN. Hereby this problem can be overcome by implementing the Beacon vector routing protocol (BVR) in Hybrid Mechanism. By finding the alternative node in case of any node failure accrues. By this redundancy of information can be reduced and the loss of data can be avoided in Wireless Sensor Network

1-6

Authors: - IJCTSanjana B.M , Vikas C. Yatnalli.

The load balancing is one of the major constraints in the wireless sensor network. Single mobile sink give rise to the collision, the packet loss and communication delay. Thus usage of two mobile sink based approach is proposed. Identifying the sink location and routing path is the most challenging task in a wireless sensor network. In this scheme based upon the number of nodes, the nodes are divided into clusters, by the common node id and coordinate values the cluster heads will communicate to their respective mobile sink with the shortest routing algorithm. Update information of the sink to every cluster head leads to abundant energy usage and decrease the lifetime of the network, which is overcome in this approach. Proposed method performance is compared with the current approach named EECLA .Simulation results show that there is a vast improvement in the lifetime of the wireless sensor network when compared with the existing scheme

1-7

Authors: - IJCTMs. Sivasankari A.,Ms. Deepika R.

The robot built on the USAR team is capable of navigating the difficult terrain of a disaster site but lacks sensors for victim detection. The contribution of this work is to provide a sensor suite for human detection and Accident Detection in the urban disaster environment. Underground communication is necessary to monitor underground environmental parameter such as temperature, Humidity, toxic gas etc. and take necessary actions accordingly to avoid any types of hazard. Its purpose is to find and locate human victims who have been trapped by rubble inside damaged buildings. Conditions in a disaster area are extreme with many unknown parameters. Victims may be covered in debris, trapped in voids, or entombed, making it difficult to find them and determine their state of health. This is why it will be important to choose a set of different sensors which are complementary and able to operate in these conditions.This research consists of three main parts. The first step will be to determine the state of the art in USAR robotics, with special emphasis on sensors for victim detection. Next, a set of appropriate and complementary sensors will be selected in accordance with chosen criteria, mainly that the sensors be lowcost and lightweight.The selected sensors will be integrated with the USAR robot. This involved developing hardware and low level data acquisition software solutions. Tests will be used to determine the robustness, limitations, and accuracy of each sensor and this data will be used to develop a comprehensive system that fuses the information from all the sensors to determine the location and probability of human presence. Finally, a graphical user interface will be developed to provide useful information back to the human operator while allowing the user the power to interact with individual sensors

1-7

Authors: - IJCTMrs. Sharmila K., Ms. Sivasankari A.

Monitoring wild animals, especially those that are becoming endangered (for example, lynxes and wolves) is important for biology researchers. Solutions for the monitoring already exist; however, they all have drawbacks, such as limited range or lifetime, sensing modality, reporting delays, unreliability of operation. In this work we describe our experiences in designing an improved animal monitoring sensor system and low-level software for sensor node control and communication. The target animals for this particular research are wild lynxes or canines; however it can be extended to other animal species.The LynxNet system is based on tracking collars, built around TMote Mini sensor nodes, sensors, GPS and 433MHz radio, and stationary base stations, placed at the locations that are frequented by the animals. We present preliminary field results of our radio communication range tests