No description available.

The purpose of this study was to determine if there is a relationship between dual enrollment engagement and the completion of a certificate or diploma at a Tennessee College of Applied Technology. Other factors such as demographics of race and age was considered as well. This study is useful in providing further information on the transition from secondary to postsecondary education. Information was gathered to determine the relationship between high school dual enrollment students who attend a Tennessee College of Applied Technology and the likelihood of graduating with a diploma. The participants consist of high school dual enrollment students from each of the 27 Tennessee College of Applied Technology institutions across the state of Tennessee. The findings of this study were that there is a correlation between increased levels of dual enrollment engagement and the completions of a certificate or diploma.

Autocallable structured products represent an investment opportunity which has been growing in both the European and American market since they were first launched. The value of these structured products is dependent on how their underlying assets perform, which can consist of stocks, indexes or other assets. With a sample size of 30 structured products we provide research on the relation between the products return and the return of the underlying assets. Specifically, the purpose of the study is to analyse how increases in the returns of the underlying assets affect the returns in the products. Using an ordinary least squares regression model, we find that the return in the underlying assets, the issuers credit rating and the interest rate at issuance have a statistically significant effect on the returns in the products. We conclude that in our sample, an increase in the underlying assets returns results in a less than equal increase in the returns of the autocalls.

Miljöcertifiering av byggnader ökar i takt med efterfrågan hos bland annat fastighetsägare, potentiella kunder och hyresgäster. Allt fler beställare väljer därmed att låta certifiera sina projekt med något av dagens miljöcertifieringssystem. För arkitekter innebär detta en stor utmaning, då det ställs hårda krav på byggnaden för att den ska uppnå den önskade certifieringen. Dessa certifieringskrav påverkar till stor del utformningen av byggnaden, och att då som arkitekt uppnå ett estetiskt uttryck samtidigt som kraven måste uppfyllas är inte enkelt.  Det är dessutom viktigt att projektera rätt redan från början. Det här projektet syftar till att utöka arkitekters kunskaper kring projektering i ett tidigt skede av lokalbyggnader som ska miljöcertifieras med miljöcertifieringssystemet Miljöbyggnad. Studierna genomförs med hänsyn till de gestaltningspåverkande indikatorer beträffande områdena dagsljus, energi och innemiljö som bedöms enligt Miljöbyggnad samt är viktiga att beakta i ett tidigt skede. Undersökningarna görs på en fiktiv kontorsbyggnad med representativa och vedertagna förutsättningar för en vanlig kontorsbyggnad enligt dagens byggnormer. Beräkningar och analyser har gjorts med avseende på dagsljus, värmeeffektbehov, energianvändning, solvärmelast och termiskt inneklimat. Resultaten visar på att det är möjligt att projektera lokalbyggnader med en relativt stor fönsterandel, upp mot 40 % i förhållande till fasad, och trots det uppnå Miljöbyggnads certifieringsnivå silver. Det som dock tycks vara en förutsättning för detta är att byggnaden har rörlig solavskärmning. Alternativt annan solavskärmning, men som då tillåter ett högt dagsljusinsläpp samtidigt som stor del av den totala energin från solen stängs ute de molnfria och varma dagar under året. Ett ytterligare villkor för att uppnå certifieringsnivån i fråga är att en värmekälla placeras vid fönsteren, för att under vintern uppnå ett behagligt inneklimat. Det som till synes är svårast att uppnå är balansen mellan ansenligt dagsljus, låg solvärmelast samt ett tillfredsställande termiskt klimat sommartid. / Environmental certification of buildings becomes more important as demand from e.g. property owners, potential customers and tenants increases. More and more investors therefore choose to certificate their building projects with some of today’s environmental systems of certification. For an architect it means a more extensive challenge, since it requires higher claims for the building to achieve the desired certification. Some requirements for the authorisation affect big parts of the design of the building. The task is for the architect to achieve a good balance between the requirements and the design of the building. It is therefore very important to plan properly from the start of the process. This project aims to increase the knowledge among architects in the early stage of building process when it comes to office buildings with a certification according to the system Miljöbyggnad. The analysis will be made of calculations for every indicator that directly affects the design of the building and have a special importance in the early stage of the building process. Daylight, energy and the indoor environment judged according to Miljöbyggnad. The studies will be made by a fictitious building placed in Stockholm with the representative properties of a normal office building recording to the building standards of today. Our results in this thesis show that there is a possible way to build an office building with a relatively high portion of window of the building façade, and considered that still accomplish the requirements to achieve the level Silver Miljöbyggnad. There is one thing that seems to be an assumption for this kind of office building, it has to be mobile shading for the windows. Alternatively some other kind of shading that also allow an highly inlet of daylight which at the same time let big part of the total energy from the sun out of the building during warm and sunny days. One other condition to accomplish the level of Silver is that a heat source will be placed under the windows, to make the indoor climate pleasant during winter season. As a conclusion of our analyses it seems that the hardest thing to accomplish is the balance between a good daylight factor, low solar load and at the same time a satisfying thermal climate during summer time.

Certificate Transparency provides auditability to the widely used X.509 Public Key Infrastructure (PKIX) authentication in Transport Layer Security (TLS) protocol. Transparency logs issue signed promises of inclusions to be used together with certificates for authentication of TLS servers. Google Chrome enforces the use of Certificate Transparency for validation of Extended Validation (EV) certificates. This thesis proposes a methodology for asserting correct operation and presents a survey of active Logs. An experimental Monitor has been implemented as part of the thesis. Varying Log usage patterns and metadata about Log operation are presented, and Logs are categorized based on characteristics and usage. A case of mis-issuance by Symantec is presented to show the effectiveness of Certificate Transparency.

Indiana University-Purdue University Indianapolis (IUPUI) / This study described the education courses in Master of Science in Nursing Education (MSN Ed) degree and post-master’s certificate (PMC) in nursing education programs and determined which of the eight NLN Core Competencies, used to certify nurse educators, were represented. Data regarding the required credit hours, practicum hours, distance accessibility, and preparation for the Certified Nurse EducatorCM (CNE) Examination also were collected. The study used a descriptive design using a web scraping technique. Program information was obtained from the accrediting bodies for graduate nursing programs in 2015. Course description data were obtained from web pages via curriculum plans, course catalogs, graduate handbooks, or other institutional web pages. Data were collected from each program website, collated, uploaded, and analyzed. In both types of programs, evidence was found for the NLN Core Competencies: Facilitate Learning (97%), Participate in Curriculum Design and Evaluation of Program Outcomes (97%), Use Assessment and Evaluation Strategies (95%), Pursue Continuous Quality Improvement in the Nurse Educator Role (88%), Engage in Scholarship (45%), Function as a Change Agent and Leader (30%), Facilitate Learner Development and Socialization (28%), and Function within the Educational Environment (12%). Only 36% and 40% of MSN Ed and PMC in nursing education programs, respectively, were completely distance accessible. Required credit hours varied from 28 to 65 for the entire MSN Ed and from 6 to 47 for the nursing education courses. PMC credit hours varied from 3 to 45. Practicum clock hours, for both programs, ranged from 60–500 while practicum credit hours ranged from 1–18. Revision of MSN Ed and PMC curricula is indicated to improve inclusion of content in all competency areas. Moreover, increasing the number of distance accessible programs may encourage more nurses to consider a master’s degree or post-master’s certificate in nursing education.

This thesis deals with encryption of short text message (SMS) in mobile communication. Introduction is dedicated to overview of the parts of GSM radiotelephone nets and SMS messages transfer . Next chapter is reserved for description of cryptographic methods especially symetric and asymetric encryptografic aproaches. A design of a SMS messages encryption and decryption techniques is in next. For SMS encryption and sign, there is used the asymetric cypher RSA. Encryption use OAEP padding schema. The public key is saved in certificate. The Symbian OS has been choosen as a suitable platform for programming of mobile devices.

No description available.

Digital certificates have long been used for traditional Internet applications, and have now entered into widespread use for the Internet of Things. However, constrained devices currently have no means to verify the revocation status of certificates. Without the ability to revoke certificates, network administrators have no recourse in the event of a private key compromise. This thesis explores three alternatives to solve this problem: (1) implement the Online Certificate Status Protocol (OCSP) as is on a CoAP network stack, (2) compress certificate revocation lists (CRLs) using Bloom filters, and (3) design an optimized version of OCSP (referred to here as TinyOCSP). This work concludes that TinyOCSP reduces the message overhead of online validation by at least 73%. This reduced the energy consumption of certificate validation by 50% relative to OCSP in the experiments on constrained hardware, which shows that it may be a feasible solution for the IoT / Digitala certifikat har länge tillämpats inom traditionella internetappliceringar och har numera även omfattande användningsområden inom IoT. Begränsade apparater har i nuläget dock inga metoder för att verifiera återkallningsstatusar av certifikat. Utan förmågan att återkalla certifikat har nätverksadministratörer inga alternativ att återfalla till när en hemlig nyckel har blivit stulen. Denna uppsats undersöker tre alternativ för att lösa detta problem: (1) tillämpning av Online Certificate Status Protocol (OCSP) med CoAP, (2) komprimering av certificate revocation lists (CRLs) som använder Bloom filters, och (3) skapa en optimerad version av OCSP (TinyOCSP). Arbetet drar slutsatsen att TinyOCSP minskar message overhead av onlinevalidering med åtminstone 73%. Detta minskade energikonsumtion av certifikatsvalidering med 50% jämfört med OCSP i experimentet med begränsade apparater, vilket visar att detta är en tänkar lösning för IoT.

The thesis investigates how a blockchain can be used to build a decentralised public key infrastructure for the web, by proposing a custom federation blockchain relying on honest majority. Our main contribution is the design of a Proof of Stake protocol based on a stake tree, which builds upon an idea called follow-the-satoshi used in previous papers. Digital identities are stored in an authenticated self-balancing tree maintained by blockchain nodes. Our back-of-the-envelope calculations, based on the size of the domain name system, show that the block size must be set to at least 5.2 MB, while each blockchain node with a one-month transaction history would need to store about 243 GB. Thin clients would have to synchronise about 13.6 MB of block headers per year, and download an additional 3.7 KB of proof data for every leaf certificate which is to be checked. / Uppsatsen undersöker hur en blockkedja kan användas för att bygga en decentraliserad publik nyckel-infrastruktur för webben. Vi ger ett designförslag på en blockkedja som drivs av en pålitlig grupp av noder, där en majoritet antas vara ärliga. Vårt huvudsakliga bidrag är utformningen av ett Proof of Stake-protokoll baserat på ett staketräd, vilket bygger på en idé som kallas follow-the-satoshi omnämnd i tidigare publikationer. Digitala identiteter sparas i ett autentiserat, självbalanserande träd som underhålls av noder anslutna till blockkedjenätverket. Våra preliminära beräkningar baserade på storleken av DNS-systemet visar att blockstorleken måste sättas till åtminstone 5.2 MB, medan varje nod med en månads transaktionshistorik måste spara ungefär 243 GB. Webbläsare och andra resurssnåla klienter måste synkronisera 13.6 MB data per år, och ladda ner ytterligare 3.7 KB för varje användarcertifikat som skall valideras.