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This work-in-progress paper shares findings of the early stage of a 3-year research funded by the National Science Foundation. The major aim of the project is to advance engineering and mathematics (EM) education theory and practice related to students' self-regulation of cognition and motivation skills during problem-solving activities. The self-regulation includes students' metacognitive knowledge about task (MKT) and self-regulation of cognition (SRC). The motivational component of self-regulation (SRM) includes self-control of the motivation needed to maintain the level of engagement and deliberate practice necessary for scientific thinking and reasoning. To be effective problem-solvers, students must understand the relationship between the MKT, SRC and SRM throughout the problem-solving activities. Four research questions will guide the research: (1) How do students perceive their self-regulation of cognition (SRC) and motivation (SRM) skills for generic problem-solving activities in EM courses; (2) How does students' metacognitive knowledge about problem-solving tasks (MKT) inform their Task interpretation?; (3) How do students' SRC and SRM dynamically evolve?; and (4) How do students' SRC and SRM reflect their perceptions of self-regulation of cognition and motivation for generic EM problemsolving activities? A sequential mixed-methods research design involving quantitative and qualitative methods are used to develop complementary coarse- and fine-grained understandings of undergraduate students' SRC and SRM during academic problem-solving activities. Two 2nd year EM courses: Engineering Statics, and Ordinary Differential Equations were purposefully selected for the contexts of the study. One hundred forty two students from both courses were invited and participated in quantitative data collection using two validated surveys during spring 2022 semester. Later in the semester, qualitative data will be generated with twenty students in both courses through one-on-one interviews with students and course instructors, think-aloud protocols with students, and classroom observations. Coarse-grained understandings of students' SRC and SRM are currently developed through analysis of quantitative data collected using self-report surveys (i.e., BRoMS and PMI). Fine-grained understandings of students' SRC and SRM will be developed through analysis of qualitative data gathered via one-on-one interviews, think-aloud protocols, classroom observations, and course artifacts gathered as students engage in EM problem-solving activities. [ABSTRACT FROM AUTHOR]

Domain Name System (DNS) is the vital part of the internet world. One of the attacks on DNS is an amplification attack, in which IP is spoofed by the eavesdropper in order to launch a bandwidth consumption attack. In this attack Bulk of responses are received by the victim server in a response to a single query. In this paper the structure of the Bloom Filter is modified and its defense against the amplification attack is proposed. In this proposed solution, we used a modified bloom filter in which we have added one more property that is, we can edit its membership, such as newcomer, old one and black listed old member. Through this when old members come after a specific interval of time, they are going to register themselves as newcomers in bloom filter and this bloom filter will be placed near the victim ISP or it organization router. So when the attacker initiates a query, after a certain check it can be put on the black list. [ABSTRACT FROM PUBLISHER]

The DNS is one of the most important part of the Internet communication. DNS server runs a robust mechanism which provides the IP address of the internet host name. Even if the any component of this internet communication is unavailable for short interval then the whole internet communication will be disturbed or some time stop responding. When a DNS server sends a query to the specific server then an eves dropper can launch cache poisoning attack easily. Many solutions have been proposed which have their own pros and cones. In this paper a proposed solution is described by using security proxy with a hash function. Cache Poisoning attack can be avoided by using this technique. It creates a secure environment for the DNS to communicate with other DNS. When the source DNS receives any response from any DNS it will check the authenticity of receiving packets and send the data to the client. This technique provides secure environment for DNS communication. This new technique is easy to implement on the current DNS architecture without any modification. [ABSTRACT FROM PUBLISHER]