There has been a steady growth in the traffic generated by Mobile Network Operators (MNOs), and by 2020 it is expected to overload the existing licensed spectrum capacity and lead to the problem of scarce resources. One method to deal with this traffic overload is to access unlicensed and shared spectrum bands using an opportunistic approach. The use of Licensed Shared Access (LSA) is a novel approach for spectrum sharing between the incumbent user (i.e., the current owner of the shared spectrum) and the LSA licensee (i.e., the temporary user of frequencies, such as an MNO). The LSA system allows the incumbent users to temporarily provide the LSA licensee with access to its spectrum resources. However, licensees must adopt vertical handover and traffic steering procedures to vacate their customers from the LSA band without causing interference, whenever this is required by the incumbent. These procedures should be carried out, de facto, before the base station is turned off as a part of a rapid release of unscheduled LSA band facing evacuation scenarios. Thus, in this dissertation, a cognitive mechanism is proposed to make decisions in advance to find the best target network(s) for evacuated customers in connected mode and with active traffic per class of service. On the basis of these decisions, the vertical handover and traffic steering procedures are carried out for the best target network(s), which are selected in advance and undertaken immediately to avoid interference between the licensee and incumbent services. Furthermore, this guarantees the seamless connectivity and QoS of evacuated customers and their traffic respectively, during and after the unscheduled evacuation scenarios. A performance evaluation conducted in a simulating scenario consisting of one LTE-LSA and three Wi-Fi networks, demonstrated that the proposed solution could be completed within the time required for the unscheduled evacuation, as well as, being able to ensure the QoS and seamless connectivity of the evacuees. The total execution time obtained during the performance evaluation of the proposed solution was around 46% faster than of two related works and could thus avoid interference between the licensee and incumbent services.

There has been a steady growth in the traffic generated by Mobile Network Operators (MNOs), and by 2020 it is expected to overload the existing licensed spectrum capacity and lead to the problem of scarce resources. One method to deal with this traffic overload is to access unlicensed and shared spectrum bands using an opportunistic approach. The use of Licensed Shared Access (LSA) is a novel approach for spectrum sharing between the incumbent user (i.e., the current owner of the shared spectrum) and the LSA licensee (i.e., the temporary user of frequencies, such as an MNO). The LSA system allows the incumbent users to temporarily provide the LSA licensee with access to its spectrum resources. However, licensees must adopt vertical handover and traffic steering procedures to vacate their customers from the LSA band without causing interference, whenever this is required by the incumbent. These procedures should be carried out, de facto, before the base station is turned off as a part of a rapid release of unscheduled LSA band facing evacuation scenarios. Thus, in this dissertation, a cognitive mechanism is proposed to make decisions in advance to find the best target network(s) for evacuated customers in connected mode and with active traffic per class of service. On the basis of these decisions, the vertical handover and traffic steering procedures are carried out for the best target network(s), which are selected in advance and undertaken immediately to avoid interference between the licensee and incumbent services. Furthermore, this guarantees the seamless connectivity and QoS of evacuated customers and their traffic respectively, during and after the unscheduled evacuation scenarios. A performance evaluation conducted in a simulating scenario consisting of one LTE-LSA and three Wi-Fi networks, demonstrated that the proposed solution could be completed within the time required for the unscheduled evacuation, as well as, being able to ensure the QoS and seamless connectivity of the evacuees. The total execution time obtained during the performance evaluation of the proposed solution was around 46% faster than of two related works and could thus avoid interference between the licensee and incumbent services.

Abstract During the last couple of decades a lot of research efforts have been spent on developing different spectrum sharing concepts. As the traditional regulatory methods for spectrum allocation are proving inadequate in responding to a growing need for mobile spectrum in a timely manner and finding spectrum for exclusive use is getting increasingly difficult, the political atmosphere is also becoming more and more receptive to new innovative spectrum sharing concepts that increase the efficiency of spectrum use. These concepts also provide regulatory authorities an opportunity to fundamentally change the current major operator driven mobile market and thereby to allow new players and innovative services to surface. However, there is still a gap between the work done by the research community and the work of the regulatory authorities. In this thesis, the aim is to clarify the reasons behind this gap by analysing three prevailing regulatory spectrum sharing concepts: Licensed Shared Access, the three-tier model and TV white space concept. As different stakeholders involved in spectrum sharing – the incumbent user, the entrant user and the regulatory authority – have very diverse roles in spectrum sharing, their incentives and key criteria may vary significantly. In order for a spectrum sharing concept to have a chance in a real life deployment, all these perspectives need to be carefully considered. In fact, a feasible spectrum sharing concept is a delicate balance between the viewpoints of different stakeholders, not necessarily the one offering the most efficient spectrum utilization. This thesis analyses spectrum sharing concepts from all these perspectives and as a consequence unveils the common process model for implementing a spectrum sharing concept in real life, highlighting the distinct roles of different stakeholders in its phases. / Tiivistelmä Parin viimeisen vuosikymmenen aikana tutkimusyhteisö on kehittänyt valtavasti eri käsitteitä ja tuloksia taajuuksien yhteiskäyttöön. Matkapuhelinoperaattoreiden nopeasti kasvavan tiedonsiirto- ja taajuustarpeen myötä myös poliittinen ilmapiiri on muuttunut vastaanottavaisemmiksi uusille jaetuille taajuuksienkäyttömalleille, joilla voidaan sekä lisätä taajuuksien käytön tehokkuutta että mahdollistaa uusien toimijoiden ja innovatiivisten palvelujen kehitys. Taajuuksien yhteiskäyttömalleihin liittyvä tutkimustyö ei kuitenkaan usein palvele suoraan taajuusviranomaisten tarpeita. Tämän työn tavoitteena on selvittää syitä tähän kolmen vallitsevan joustavan taajuuksienkäyttökonseptin avulla: lisensoidun taajuuksien yhteiskäyttömallin, kolmitasoisen taajuuksien yhteiskäyttömallin ja TV kaistojen yhteiskäyttömallin. Eri toimijoilla on hyvin erilaiset roolit taajuuksien yhteiskäytössä ja siksi sekä heidän kannustimensa että keskeiset kriteerit voivat olla hyvin erilaiset. Käytäntöön sopiva jaetun taajuudenkäytön malli onkin usein kompromissi eri näkemysten omaavien toimijoiden kesken, ei välttämättä taajuuksien käytöltään tehokkain vaihtoehto. Tässä työssä analysoidaan eri taajuuksien yhteiskäyttömalleja sekä eri toimijoiden näkökulmia. Analyysin tuloksena luodaan yleinen prosessimalli taajuuksien yhteiskäyttömallien toteutukselle sekä identifioidaan eri toimijoiden roolit sen eri vaiheissa.

The United States is in the middle of a gripping nursing shortage; a shortage that is putting patients' lives in danger. This study determined the impact community and tribal colleges in severely economically distressed counties of the United States have on the nursing shortage faced by health care facilities serving these areas. The initial sample of 24 institutions selected in the Ford Foundation's Rural Community College Initiative (RCCI) (1995-2000). Data were collected from the Fall 1998 National Study of Post Secondary Faculty to obtain characteristics of faculty and from the 2003 Integrated Postsecondary Education Data System (IPEDS) to obtain characteristics of students, both at all publicly-controlled community colleges, all tribal colleges, and the 24 RCCI colleges that included 18 community and six tribal colleges. A survey was sent to the directors/deans/chairs of the nursing programs to ascertain issues related to the nursing program, nursing faculty, and nursing students. Respondents were asked to identify the healthcare facilities used for students' clinical experiences. A survey was then sent to each of these facilities asking about rural health, and source of nursing staff. Findings: 1) 87% of these these rural healthcare facilities are experiencing a significant shortage of nurses, and they are challenged to recruit and retain nursing staff; 2) Nursing programs, including both Licensed Practical Nursing and Associate's Degree Nursing are important to these rural community and tribal colleges, have seen growth over the past 5 years and expect to continue growth (86%); 3) Financial aid for nursing students is critically important; 4) Students are predominantly white and female; minorities are significantly under-represented; 5) Lack of subsidized public transportation and child care for nursing students even at tribal colleges are barriers that impact program completion; and 6) A shortage of nursing faculty exists at rural community and tribal colleges that negatively impacts student enrollment in these programs, thus reducing the rural nursing workforce pipeline. It is the rural community and tribal college nursing programs help provide severely economically distressed counties of the United States with the nursing workforce needed to decrease the nurse to patient ratio.

Indiana University-Purdue University Indianapolis (IUPUI) / Parents have increasingly participated in their children’s bedside care. Parental participation has led to more provider-parent interactions and communication during such stressful events. Helping parents through such stressful events requires nurses to be skilled communicators. Brief methods of training emotion-focused communication with newly licensed nurses are needed, but as yet are rare. The purpose of this study was to evaluate the impact of a validated brief communication (Four Habits Model) training program for newly licensed pediatric nurses. The intervention focused on ways to improve nurses’ emotion-focused conversations with parents. Information processing and Benner’s novice to expert informed this study. The intervention is based on the four habits model, with “habits” providing a structure for nurses to organize their thinking and behavior during emotion-focused conversations with parents. Thirty-five pediatric nurses with 0–24 months of nursing experience at a large mid-western children’s hospital participated in the study. Mixed methods provided data for this experimental study, using a group-by-trials repeated measures ANOVA design. Participants randomized to the intervention group participated in a one-hour three-part training: adapted four habits model content, simulated nurse-parent communication activity, and debrief. Participants randomized to the control group observed a one-hour travel video. Key outcome variables were Preparation, Communication Skills, Relationships, Confidence, Anxiety, and Total Preparation. Compared with the controls, the intervention group improved significantly in the following areas: Preparation, F(1,33) = 28.833, p < .001; Communication Skills, F(1,33) = 9.726, p = .004; Relationships, F(1,33) = 8.337, p = .007; Confidence, F(1,33) = 36.097, p < .001; and Total Preparation, F(1,33) = 47.610, p < .001. Nurses’ experience level had no effect, with the exception of Anxiety. Nurses with more experience (≥ 12 m) showed a greater reduction in Anxiety, when compared to nurses with less experience (< 12 m), F(1,31) = 5.733, p = .023. Fifty-two percent of the nurses involved in the intervention later reported specific examples of implementing the four habits when working with parents in clinical settings. A one-hour four habits communication-training program is effective in improving newly licensed nurses’ preparation for emotion-focused conversations with parents.

Every year, millions of medical errors are committed, costing not only patient health and satisfaction, but thousands of lives and billions of dollars. Errors occur in many areas of the healthcare environment, including the profession of nursing. Nurses provide and delegate patient care and consequently, standard nursing responsibilities such as medication administration, charting, patient education, and basic life support protocol may be incorrect, inadequate, or omitted. Although there is much literature about errors among the general nurse population and there is indication that new nurses commit more errors than experienced nurses, not much literature asks the following question: What are the factors contributing to the commission of errors, including the omission of standard nursing care, among new nurses? Ten studies (quantitative, qualitative, and mixed-mode) were examined to identify these factors. From the 10 studies, the researcher identified the three themes of lack of experience, stressful working conditions, and interpersonal and intrapersonal factors. New nurses may not have had enough clinical time, may develop poor habits, may not turn to more experienced nurses and other professionals, may be fatigued from working too many hours with not enough staffing, may not be able to concentrate at work, and may not give or receive adequate communication. Based on these findings and discussion, suggested implications for nursing practice include extended clinical experience, skills practice, adherence to the nursing process, adherence to medications standards such as the five rights and independent double verification, shorter working hours, adequate staffing, no-interruption and no-phone zones, creating a culture of support, electronically entered orders, translation phones, read-backs, and standardized handoff reports.

Across the United States, an overwhelming majority of the population claim that religion and spirituality beliefs shape their worldview and assist in coping with life stressors. Yet, the literature has shown that mental health practitioners reported discomfort integrating religion and spiritually in clinical practice. The purpose of this study was to explore whether license-holding mental health professionals in Southern California develop reluctance toward addressing religion/spirituality with their clients. Through snowball sampling, 52 clinicians composed of social workers, counselors, marriage and family therapists, nurses, psychologists, and psychiatrists were recruited across Southern California (N =52). The participants were measured descriptively based on (a) confidence in their ability to integrate client beliefs into treatment and (b) their comfort discussing topics related to RS with their clients. Results revealed an overall level of reluctance ranging from 15 percent (for comfortability) to 25 percent (for ability) among the study participants. Licensed clinical social workers reported slightly lower reluctance level than other licensed professionals. Implications of the findings were discussed.

Most organisations use several data management and business intelligence solutions which are on-premise and, or cloud-based to manage and analyse their constantly growing business data. Challenges faced by organisations nowadays include, but are not limited to growth limitations, big data, inadequate analytics, computing, and data storage capabilities. Although these organisations are able to generate reports and dashboards for decision-making in most cases, effective use of their business data and an appropriate business intelligence solution could achieve and retain informed decision-making and allow competitive reaction to the dynamic external environment. A data management and analytic model has been proposed on which organisations could rely for decisive guidance when planning to procure and implement a unified business intelligence solution. To achieve a sound model, literature was reviewed by extensively studying business intelligence in general, and exploring and developing various deployment models and architectures consisting of naïve, on-premise, and cloud-based which revealed their benefits and challenges. The outcome of the literature review was the development of a hybrid business intelligence model and the accompanying architecture as the main contribution to the study.In order to assess the state of business intelligence utilisation, and to validate and improve the proposed architecture, two case studies targeting users and experts were conducted using quantitative and qualitative approaches. The case studies found and established that a decision to procure and implement a successful business intelligence solution is based on a number of crucial elements, such as, applications, devices, tools, business intelligence services, data management and infrastructure. The findings further recognised that the proposed hybrid architecture is the solution for managing complex organisations with serious data challenges. / Computing / M. Sc. (Computing)

Předkládaná disertační práce je zaměřena na "heterogenní propojení mobilních zařízení v bezdrátových systémech 5. generace". Navzdory nepochybnému pokroku v rámci navržených komunikačních řešení postrádají mobilní sítě nastupující generace dostatečnou šířku pásma a to hlavně kvůli neefektivnímu využívání rádiového spektra. Tato situace tedy v současné době představuje řadu otázek v oblasti výzkumu. Hlavním cílem této disertační práce je proto návrh nových komunikačních mechanismů pro komunikaci mezi zařízeními v bezprostřední blízkosti s asistencí mobilní sítě a dále pak návrh a implementace algoritmů pro dynamické přidělování frekvenčního spektra v nastupujících mobilních sítích 5G. Navrhnuté komunikační mechanismy a algoritmy jsou následně komplexně vyhodnoceny pomocí nově vyvinutých simulačních nástrojů (kalibrovaných s využitím 3GPP trénovacích dat) a zejména pak v experimentální mobilní síti LTE-A, která se nachází v prostorách Vysokého učení technického v Brně, Česká Republika. Získané praktické výsledky, které jsou podpořeny zcela novou matematickou analýzou ve speciálně navržených charakteristických scénářích, představují řešení pro vlastníka spektra v případě požadavků na jeho dynamické sdílení. Tato metoda tedy představuje možnost pro efektivnější využití spektra v rámci mobilních sítí 5G bez degradace kvality služeb (QoS) a kvality zážitků (QoE) pro koncové uživatele. Vědecký přínos dosažených výsledků dokazuje fakt, že některé z principů představených v této disertační práci byly zahrnuty do celosvětově uznávaného standardu (specifikace) 3GPP Release 12.

Magister Legum - LLM (Mercantile and Labour Law)