Enhancing Security of Linux OS against Administrators

Inside cyber security threats by system administrators are some of the main concerns of organizations about the security of systems. Since operating systems are controlled and managed by fully trusted administrators, they can negligently or intentionally break the information security and privacy of users and threaten the system integrity. In this thesis, we propose some solutions for enhancing the security of Linux OS by restricting administrators’ access to superuser’s privileges while they can still manage the system. We designed and implemented an interface for administrators in Linux OS called Linux Admins’ User Interface (LAUI) for managing the system in secure ways. LAUI along with other security programs in Linux like sudo protect confidentiality and integrity of users’ data and provide a more secure system against administrators’ mismanagement. In our model, we limit administrators to perform managing tasks in secure manners and also make administrators accountable for their acts. In this thesis we present some scenarios for compromising users’ data and breaking system integrity by system administrators in Linux OS. Then we evaluate how our solutions and methods can secure the system against these administrators’ mismanagement.

Verkkokulutuksen digitaaliset kuilut Suomessa ja Iso- Britanniassa - Internetin käyttötapojen ja palveluntarjoajaan kohdistuvan epäluottamuksen vaikutukset verkkokulutusaktiivisuuteen

Tutkielmassa tarkastellaan sitä, miten erilaiset internetin käyttötavat, käytön aktiivisuus sekä palveluntarjoajaan kohdistuva luottamus vaikuttavat alttiuteen kuluttaa sosiaalisessa internetissä. Tarkastelen myös, miten erilaiset sosiodemografiset tekijät vaikuttavat alttiuteen kuluttaa verkossa. Verkkokulutukseen vaikuttavien tekijöiden tarkastelun lisäksi pohdin palveluntarjoajaan kohdistuvan epäluottamuksen muodostumiseen vaikuttavia tekijöitä. Tässä tutkimuksessa käytetään tutkimusaineistona vuonna 2013 kerättyä Special Eurobarometer 398 –aineistoa, jota tarkastellaan ristiintaulukointien ja X²-testien sekä logistisen regressioanalyysin avulla. Tutkimuksen tuloksista on pääteltävissä, että internetin käytön tavat ovat erittäin merkittäviä verkkokulutusta ohjaavia tekijöitä. Myös verkkokauppaan kohdistuva epäluottamus, kuluttajan ikä sekä koulutusaste vaikuttivat verkkokulutusaktiivisuuteen, mutta vaikutukset vaihtelivat tutkimusmaiden välillä. Samoin epäluottamuksen rakentumiseen vaikuttavat tekijät vaihtelivat Suomen ja Iso-Britannian välillä. Tämän tutkimuksen tulokset osaltaan puoltavat aiempaa kirjallisuutta siinä, että hyvätuloisten, korkeasti koulutetun keskiluokan sekä matalasti koulutetun ja alhaisen tulotason sosiaaliluokan välillä on havaittavissa merkittäviä sosiaalisen internetin käyttöön liittyviä eroja, jotka vaikuttavat voimakkaasti yhteiskunnallisen osallistumisen mahdollisuuksien asteeseen, kuten esimerkiksi verkkokulutusmahdollisuuksien jakautumiseen.

ISO 13485-laatujärjestelmän käyttöönottoselvitys

Tämän diplomityön tarkoituksena on tehdä esiselvitys suomalaiselle terveysteknologiayritykselle, miten ISO 13485-standardi vaikuttaa yrityksen ydinprosesseihin ja laatujärjestelmään yleisesti. Yritys on sertifioinut aikaisemmin ISO 9001-laatujärjestelmän. Työn tavoitteena on päivittää yrityksen ydinprosessikuvaukset vastaamaan nykytilaa, tehdä kuiluanalyysi standardien välillä sekä pohtia miten ISO 13485-laatujärjestelmän käyttöönotto voidaan suorittaa yrityksessä. Diplomityössä käytettiin kvalitatiivista tutkimusmenetelmää. Teoriaosiossa tehtiin kirjallisuuskatsaus prosessijohtamiseen, laatujärjestelmiin, ISO 9001- ja ISO 13485-standardien eroavuuksiin sekä ISO 13485-laatujärjestelmän käyttöönottoprojektiin. Työn empiriaosuudessa tarkastellaan yrityksen ydinprosessikuvausten päivittämistä, ISO 13485-standardin vaikutuksia ydinprosesseihin ja yleisesti laatujärjestelmään. Empirian viimeisessä osuudessa pohditaan, miten kohdeyritys voi sertifioida ISO 13485-laatujärjestelmän tulevaisuudessa. Työn aikana suoritettiin case-haastattelu toiseen suomalaiseen terveysteknologia yritykseen, joka on sertifioinut sekä ISO 9001- että ISO 13485-laatujärjestelmät. Case-haastattelusta saatiin käytännön tietoa ISO 13485-laatujärjestelmän käyttöönottoprojektista. Diplomityön tuloksena kohdeyritys saa päivitetyt ydinprosessikuvaukset, kuiluanalyysin standardien välillä sekä suuntaviivoja ISO 13845-laatujärjestelmän sertifiointiin.

Iso-isän jälkeen-säätös, eli Kristillinen koto

Imprimatur: C. R. Lindberg.

Lausunto: SFS-ISO 639-2 - kielikoodimuutosten käännökset

Kotoistushankkeen lausunto

Kotoistuksen esittämä kommentti lausuntopyyntöön SFS-ISO 639-2:2005

Kotoistushankkeen kannanotto, ks. http://www.kotoistus.fi

Phonon spectra and thermal properties of some fcc metals using embedded-atom potentials /

By employing the embedded-atom potentials of Mei et ai.[l], we have calculated the dynamical matrices and phonon dispersion curves for six fee metals (Cu,Ag,Au,Ni,Pd and Pt). We have also investigated, within the quasiharmonic approximation, some other thermal properties of these metals which depend on the phonon density of states, such as the temperature dependence of lattice constant, coefficient of linear thermal expansion, isothermal and adiabatic bulk moduli, heat capacities at constant volume and constant pressure, Griineisen parameter and Debye temperature. The computed results are compared with the experimental findings wherever possible. The comparison shows a generally good agreement between the theoretical values and experimental data for all properties except the discrepancies of phonon frequencies and Debye temperature for Pd, Pt and Au. Further, we modify the parameters of this model for Pd and Pt and obtain the phonon dispersion curves which is in good agreement with experimental data.

A framework for understanding the factors that influence spectators' recall and recognition of embedded sponsorship stimuli

Now, more than ever, sponsors of athletic events demand to see evidence of a commercial return, such as enhanced brand awareness, for their investment of cash or non-cash resources (Lough et aI., 2000). The most common way to measure the impact of perimeter signage (Le., any billboard or sign that displays a company's brand name and/or logo and which surrounds the playing area) on spectators' awareness of event sponsors has been through the use of brand name recall and recognition tests (Shilbury & Berriman, 1996). Recall testing requires spectators to list all of the sponsors they can remember seeing at, for example, an athletic event, strictly from memory and without any help (Cuneen & Hannan, 1993). With recognition testing, spectators are required to identify sponsors from a prepared list which include "dummy" brand names (i.e., sponsors that are present in the list but which do not actually sponsor the event). In order to determine whether sponsors' brand awareness objectives are being met, it is important for sport and recreation marketers to understand what influences a spectator's ability to remember (Le., recall and/or recognize) the brand names of companies who advertise on perimeter signage. The purpose this study was to examine the factors that influence spectators' recall and recognition of embedded sponsorship stimuli (i.e., company brand names on perimeter signage surrounding the play area) at a Canadian University's men's basketball game and football game. These factors included the number of games spectators attended over the course of the season (i.e., repeated exposure to sponsorship stimuli), spectators' level of involvement with the event, and spectators' level of involvement with the advertisements (i.e., perimeter signage). This study also examined the differences between recall and recognition as a means of measuring spectators' awareness of sponsors, and attempted to determine if there are sport differences in spectators' recall and recognition of perimeter signage. Upon leaving the football stadium or gymnasium, spectators were approached, at random, by trained research assistants located at each exit and asked to complete a brief survey questionnaire. Respondents completed the survey on-site. A total of 358 completed surveys were collected from spectators who attended the football (N = 277) and basketball (N = 81) games. The data suggest that football and basketball respondents recognized more sponsors' brand names than they recalled. In addition, football respondents who were highly involved with the event (i.e., those individuals who viewed attending the events as fun, interesting and exciting) attended more games over the course of the season and had significantly higher brand name recognition of sponsors who advertised on perimeter signage than those individuals with low involvement with the athletic event. Football respondents who were highly involved with the sponsors' advertisements (i.e., those individuals who viewed sponsors' perimeter signage as appealing, valuable and important) had significantly higher brand name recall of event sponsors than those individuals with low involvement with these sponsors' advertisements. Repeated exposure to perimeter signage did not have a significant influence on football or basketball respondents' recall or recognition of sponsors. Finally, the data revealed that football respondents had significantly higher recall of sponsors' brand names than basketball respondents. Conversely, basketball respondents had significantly higher recognition of sponsors' brand names than did football respondents.

The Lived Experience of Nursing Students With Formative Assessment Formally Embedded in Clinical Courses: A Transcendental Phenomenological Study

The potential of formative assessment (FA) for informing learning in classroom-based nursing courses is clearly established in the literature; however, research on FA in clinical courses remains scarce. This inquiry explored the lived experience of nursing students using transcendental phenomenology and described the phenomenon of being assessed in clinical courses. The research question guiding the study was: How is the phenomenon of assessment experienced by nursing students when FA is formally embedded in clinical courses? Inherent in this question were the following issues: (a) the meaning of clinical experiences for nursing students, (b) the meaning of being assessed through FA, and (c) what it is like to be assessed when FA is formally embedded within clinical experiences. The noematic themes that illuminated the whatness of the participants’ experience were (a) enabled cognitive activity, (b) useful feedback, (c) freedom to be, (d) enhanced focus, (e) stress moderator, and (f) respectful mentorship. The noetic themes associated with how the phenomenon was experienced were related to bodyhood, temporality, spatiality, and relationship to others. The results suggest a fundamental paradigm shift from traditional nursing education to a more pervasive integration of FA in clinical courses so that students have time to learn before being graded on their practice. Furthermore, this inquiry and the literature consulted provide evidence that using cognitive science theory to inform and reform clinical nursing education is a timely option to address the repeated calls from nursing leaders to modernize nursing education. This inquiry contributes to reduce our reliance on assumptions derived from research on FA in nursing classrooms and provides evidence based on the reality of using formative assessment in clinical courses. Recommendations for future research are presented.

Implementación del sistema de aseguramiento de calidad ISO 9002.

Tesis (Maestría en Ciencias de la Administración con Especialidad en Producción y Calidad) UANL

Certificación de las normas ISO-9000 aplicado a la industria manufacturera del ramo de la electrónica

Tesis (Maestría en Ciencias de la Administración con Especialidad en Producción y Calidad) UANL