Intrusion detection system alert correlation with operating system level logs

Thesis (Master)--Izmir Institute of Technology, Computer Engineering, Izmir, 2009Includes bibliographical references (leaves: 63-66)Text in English; Abstract: Turkish and Englishvii, 67 leavesInternet is a global public network. More and more people are getting connected to the Internet every day to take advantage of the Internetwork connectivity. It also brings in a lot of risk on the Internet because there are both harmless and harmful users on the Internet. While an organization makes its information system available to harmless Internet users, at the same time the information is available to the malicious users as well. Most organizations deploy firewalls to protect their private network from the public network. But, no network can be hundred percent secured. This is because; the connectivity requires some kind of access to be granted on the internal systems to Internet users. The firewall provides security by allowing only specific services through it. The firewall implements defined rules to each packet reaching to its network interface. The IDS complements the firewall security by detected if someone tries to break in through the firewall or manages to break in the firewall security and tried to have access on any system in the trusted site and alerted the system administrator in case there is a breach in security. However, at present, IDSs suffer from several limitations. To address these limitations and learn network security threats, it is necessary to perform alert correlation. Alert correlation focuses on discovering various relationships between individual alerts. Intrusion alert correlation techniques correlate alerts into meaningful groups or attack scenarios for ease to understand by human analysts. In order to be sure about the alert correlation working properly, this thesis proposed to use attack scenarios by correlating alerts on the basis of prerequisites and consequences of intrusions. The architecture of the experimental environment based on the prerequisites and consequences of different types of attacks, the proposed approach correlates alerts by matching the consequence of some previous alerts and the prerequisite of some later ones with OS-level logs. As a result, the accuracy of the proposed method and its advantage demonstrated to focus on building IDS alert correlation with OS-level logs in information security systems

An Investigation into Educational Decision-Making in a Centralized Education System: Governance Principles and the Case of National Education Councils (Şûras)

This study aims to investigate how national education councils are organized inTurkey, shed light on their voting procedures, and examine their perceived chal-lenges, based on data from eight participants of the 18th National Education Council.A qualitative research design was adopted and data were collected through semi-structured interviews. By scrutinizing a particular decision-making convention in acentralized system, the study offers significant evidence on education decision-mak-ing and contributes to the existing body of literature on education decision-makingin accordance with governance principles

Demystifying the impact of educational leadership on teachers’ subjective well-being:A bibliometric analysis and literature review

This study aims to offer a review of research on the impact of leadership on shaping teachers’ subjective well-being, utilizing metadata from the Web of Science. The study utilized bibliometric analysis techniques to showcase the prominent researchers and countries, along with their collaborative networks and the field's scientific foundations. Narrative reviews of the main themes across the entire corpus and h-classics publications provided further insights into the topic. The findings indicate a consistent growth in research activity within this field over the last decade. The foundations of research in this field have been primarily rooted in educational research, psychology, management, environmental health, and health sciences. The literature consistently emphasizes the pivotal role of leadership in influencing teachers’ well-being, recognizing effective school leadership as crucial for shaping their professional experiences. Supportive leadership is particularly highlighted for fostering a positive work environment and enhancing teachers’ subjective well-being, with various leadership styles influencing overall life and job satisfaction, motivation, and mental health

Selvester score and myocardial performance index in acute anterior myocardial infarction

BACKGROUND: The simplified Selvester QRS score is a parameter for estimating myocardial damage in ST-elevation myocardial infarction. ST-elevation myocardial infarction leads to varying degrees of impairment in left ventricular systolic and diastolic function. Myocardial performance index is a single parameter that can predict combined left ventricular systolic and diastolic performance. OBJECTIVE: We investigated the relationship between Selvester score and myocardial performance index in patients undergoing primary percutaneous coronary intervention for acute anterior myocardial infarction. METHODS: The study included 58 patients who underwent primary percutaneous coronary intervention for acute anterior myocardial infarction. Selvester score of all patients was also calculated at 72 h. Patients were categorized into two groups according to the Selvester score. Those with a score = 6 (high score) were considered group 2. RESULTS: When compared with group 1, patients in group 2 were older (p=0.01) and had lower left ventricular ejection fractions (50.3 +/- 4 vs. 35.6 +/- 6.9, p=0.001), and conventional myocardial performance index (0.52 +/- 0.06 vs. 0.69 +/- 0.08, p=0.001), lateral tissue Doppler-derived myocardial performance index (0.57 +/- 0.08 vs. 0.72 +/- 0.08, p=0.001), and septal tissue Doppler-derived myocardial performance index (0.62 +/- 0.07 vs. 0.76 +/- 0.08, p=0.001) were higher. There was a high correlation between lateral tissue Doppler-derived myocardial performance index and conventional myocardial performance index and Selvester score (r=0.80, p<0.001; r=0.86, p<0.001, respectively) and a moderate correlation between septal tissue Doppler -derived myocardial performance index and Selvester score (r=0.67, p<0.001). CONCLUSIONS: The post-procedural Selvester score can predict lateral tissue Doppler-derived myocardial performance index and conventional myocardial performance index with high sensitivity and acceptable specificity in patients undergoing primary percutaneous coronary intervention for acute anterior myocardial infarction

Teachers’ affective and physical well-being:emotional intelligence, emotional labour and implications for leadership

PurposeThis study aims to examine the role of teachers’ emotional intelligence (EI) and emotional labour (EL) strategies in their affective and physical well-being.Design/methodology/approachThe quantitative data were collected from 436 primary school teachers. Likert-type scales were used to measure the variables. Confirmatory factor analyses were performed for the construct validity of the scales, and path analysis was used to test the hypothesised model.FindingsThe final structural equation model suggests that teachers' EI levels and display of appropriate EL strategies significantly reduce their stress, anxiety, burnout and psychosomatic complaints (PSCs). The final model shows that the deep acting strategy, which includes more adaptive emotion regulation strategies, improves teachers’ affective and physical well-being, while the surface acting strategy has a detrimental effect on their well-being.Originality/valueTo the best of the authors’ knowledge, this study is the first in the literature to highlight the importance of school teachers’ EI and EL strategies in managing stress, anxiety, burnout (affective well-being),and alleviating PSCs (physical well-being) within a single structural equation model. The findings have implications for educational leaders in fostering teachers’ emotional competencies and resources

Twitter and the Press: an Ego-Centred Analysis

Ego networks have proved to be a valuable tool for understanding the relationships that individuals establish with their peers, both in offline and online social networks. Particularly interesting are the cognitive constraints associated with the interactions between the ego and the members of their ego network, whereby individuals cannot maintain meaningful interactions with more than 150 people, on average. In this work, we focus on the ego networks of journalists on Twitter, and we investigate whether they feature the same characteristics observed for other relevant classes of Twitter users, like politicians and generic users. Our findings are that journalists are generally more active and interact with more people than generic users. Their ego network structure is very aligned with reference models derived from the social brain hypothesis and observed in general human ego networks. Remarkably, the similarity is even higher than the one of politicians and generic users ego networks. This may imply a greater cognitive involvement with Twitter than with other social interaction means. Moreover, the ego networks of journalists are much stabler than those of politicians and generic users, and the ego-alter ties are often information-driven.Comment: Accepted at OSNED 2018 - colocated with WWW'1

Teachers’ Moral Intelligence: A Scale Adaptation into Turkish and Preliminary Evidence

The purpose of this work is to adapt the existing Moral Competency Index (MCI) developed by Lennick and Kiel in a sample of teachers. The validated Turkish version of MCI is based on the item pool of the original MCI with a slight adaptation of the items to fit the context of teacher leadership. The translated form was administered to 773 teachers in Gaziantep city. Exploratory factor analysis, Cronbach&rsquo;s Alpha and Split-half reliability, and item analysis were performed through SPSS, while the first and second order confirmatory factor analyses were performed through AMOS. Results showed that adapted Turkish form of MCI (Ogretmen Ahlaki Yeterlik Olcegi) is reliable and valid, and the four-dimensional original factorial structure (integrity, responsibility, forgiveness, and compassion) was confirmed and maintained. Finally, multiple regression analyses were performed. Results showed that female teachers have higher levels of moral competencies in the dimensions of integrity and forgiveness. Also, as teachers&rsquo; age increases, their general moral competency scores increase in the dimensions of integrity, responsibility, and compassion

Classroom Management and Migrant Students: A Study of Problems and Solutions

Abstrac

Modeliranje strukturnih jednadžbi na temelju veza između povjerenja nastavnika u menadžment, predanosti menadžmentu, zadovoljstva menadžmentom i namjere napuštanja organizacije

This study aims to determine the relationships among teachers’ trust in the manager, commitment to the manager, satisfaction with the manager and teachers’ intent to leave. The data was collected on the sample of 478 primary school teachers using self-report scales. Two alternative structural models were examined: one proposed that satisfaction with the manager causes commitment, while the other one proposed that commitment causes satisfaction. Both alternative models yielded exactly the same good fit indices. According to the first model, the teachers’ trust in manager predicts their satisfaction with manager and commitment to manager positively, while trust in manager negatively predicts their intent to leave through the mediating effect of satisfaction with manager. According to the second model, teachers’ trust in manager positively predicts their satisfaction with manager and commitment to manager, while trust in manager negatively predicts the teachers’ intent to leave through the mediating effects of commitment to manager and satisfaction with manager.Cilj ovoga istraživanja je odrediti veze između povjerenja zaposlenika u menadžera, predanosti menadžeru, zadovoljstva menadžerom i namjere nastavnika da napuste ustanovu u kojoj rade. Podaci su prikupljeni na uzorku od 478 nastavnika osnovne škole koji su upotrebljavali skale samoprocjene. Ispitana su i dva drugačija strukturna modela: jedan koji tvrdi da zadovoljstvo menadžmentom vodi predanosti i drugi koji tvrdi da predanost menadžmentu vodi zadovoljstvu. Oba modela pokazala su jednako dobre indekse pogodnosti. Prema prvome modelu povjerenje nastavnika u menadžera pozitivno utječe na njihovo zadovoljstvo menadžerom i predanost menadžeru, dok to isto povjerenje u menadžera umanjuje njihovu namjeru da napuste organizaciju, kroz medijacijski učinak zadovoljstva menadžerom. Prema drugome modelu, povjerenje nastavnika u menadžera pozitivno utječe na njihovo zadovoljstvo menadžerom i na predanost menadžeru, dok povjerenje u menadžera umanjuje njihovu namjeru da napuste organizaciju, kroz medijacijski učinak predanosti menadžeru i zadovoljstva menadžerom