2,317 research outputs found

    On the generalized Hartley-Hilbert and Fourier-Hilbert transforms

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    In this paper, we discuss Hartley-Hilbert and Fourier-Hilbert transforms on a certain class of generalized functions. The extended transforms considered in this article are shown to be well-defined, one-to-one, linear and continuous mappings with respect to δ and Δ convergence. Certain theorems are also established

    An Overview of Mobile Ad Hoc Networks for the Existing Protocols and Applications

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    Mobile Ad Hoc Network (MANET) is a collection of two or more devices or nodes or terminals with wireless communications and networking capability that communicate with each other without the aid of any centralized administrator also the wireless nodes that can dynamically form a network to exchange information without using any existing fixed network infrastructure. And it's an autonomous system in which mobile hosts connected by wireless links are free to be dynamically and some time act as routers at the same time, and we discuss in this paper the distinct characteristics of traditional wired networks, including network configuration may change at any time, there is no direction or limit the movement and so on, and thus needed a new optional path Agreement (Routing Protocol) to identify nodes for these actions communicate with each other path, An ideal choice way the agreement should not only be able to find the right path, and the Ad Hoc Network must be able to adapt to changing network of this type at any time. and we talk in details in this paper all the information of Mobile Ad Hoc Network which include the History of ad hoc, wireless ad hoc, wireless mobile approaches and types of mobile ad Hoc networks, and then we present more than 13 types of the routing Ad Hoc Networks protocols have been proposed. In this paper, the more representative of routing protocols, analysis of individual characteristics and advantages and disadvantages to collate and compare, and present the all applications or the Possible Service of Ad Hoc Networks.Comment: 24 Pages, JGraph-Hoc Journa

    Patient preferences for the pharmacological treatment of osteoarthritis using adaptive choice-based conjoint (ACBC) analysis: A pilot study

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    Background: Patient preferences for pharmaceutical treatment of osteoarthritis have been investigated using Conjoint Analysis. Studies have identified the importance of side effects in determining preferences, but noted that methodological limitations precluded further investigation of additional attributes such as hepatic and renal toxicity. Objective: Following on from a feasibility study of adaptive choice-based conjoint (ACBC) analysis, the aim of this study was to evaluate 8 medication attributes for the pharmaceutical treatment of osteoarthritis (OA). Setting and Participants: Eleven participants were recruited from members of a Research Users’ Group (RUG) who had been diagnosed with osteoarthritis. RUG members individually complete the ACBC task. Main outcome measures: The relative importance of each attribute and the utilities (part-worth) of each level of each attribute were estimated using ACBC built-in Hierarchical Bayes (HB). Results: The combined relative importance of the 4 risk side-effect attributes when selecting osteoarthritis medication (kidney and liver side effects, heart attack and stroke side effects, stomach side effects and addiction) was 66% while the effectiveness attribute accounted for 8% of the relative importance of the medication decision. Conclusions: In this study, the gap between relative importance of 4 side-effect attributes and expected benefit was 66% vs 8%. These preliminary findings indicate that OA patients are most concerned with the avoidance of adverse events and that there is a threshold above which expected benefit has little impact on patients’ medication preferences. The study highlights methodological features of ACBC that may be useful more generally in health services research, but the results must be interpreted in conjunction with the study limitations

    The lived experience of adolescents with haematological malignancies in Jordan : an interpretive phenomenological analysis study

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    This thesis explored and documented the lived experiences of Jordanian adolescents with haematological malignancies (HMs). The study explored how these adolescents described their cancer journey throughout the different stages and how these experiences shaped the adolescents’ behavioural responses and coping strategies. A literature review revealed a paucity of bio-psychosocial care studies in this area conducted in Arab countries when compared to western countries. Furthermore, the available research was dominated by quantitative studies, with a dearth of research focused on adolescents with HM. Such a paucity of literature and limited understanding of adolescents’ experiences of living with HM has the potential to compromise the quality of care provided to this group of patients. This study contributes to the understanding of adolescents’ lived experiences and factors that facilitated or inhibited the experience through an in-depth descriptive account.A prospective longitudinal study using an interpretative phenomenological analysis methodology explored the lived experience of 14 Jordanian adolescents with haematological malignancies during the first six months following their diagnosis. In this study, in-depth interviews were the main method of data collection. A total of 27 face-to-face, semi-structured interviews were completed and each interview took on average 75 minutes. Each interview was transcribed verbatim and the data analysis occurred using the interpretive phenomenological analysis method first described by Smith in 1996. The data from transcribed interviews were managed using ©QSR NVivo8 software for qualitative data analysis.The results of the analysis of data were reported under three main themes depicting the participants’ experiences, which were the “silence of HM”, “life is changing”, and “ways of coping”. The analysis indicated that initially the participants received little information and had limited communication with their parents and health team members to assist them to understand what was happening to them. This resulted in the participants experiencing increased levels of distress and feelings of confusion as they were left alone to comprehend the cause of their physical problems. With the onset of cancer treatments, the bio-psychosocial side effects of the chemotherapy became one of the most distressing factors for participants affecting, as it did, all aspects of their lifeworld and generating uncertainty about their futures. Again, participants reported limited support from health team members during this critical stage. This led to difficulties in overcoming the unpleasant experiences associated with chemotherapy and cancer, for example, the alteration in their body image. Nevertheless, the participants were able to adapt and live with their illness with the use of various coping methods. For example, they used their Islamic belief to empower themselves, while playing down the severity of their illness. Some of them used hospital resources, such as the creativity room at the hospital to assist them to cope with the daily impact of their illness and maintain a sense of normality.The results of this study were consistent with previous research findings, highlighting a number of areas requiring further attention from Jordanian health planners and health team members responsible for caring for adolescents with haematological malignancies. For example, health team members need to place emphasis on the provision of psychosocial care for adolescents in order to prevent the development of co-morbidities during the illness journey. Health team members should also adopt a family centered approach to care to reduce the stress and concern of both the adolescents and their parents. In general, health team members, communities and schools need to work in collaboration in order to effectively provide adolescents with holistic care. The findings have added significantly to existing knowledge and understanding of the spiritual and psychosocial needs of adolescents during this time, particularly because this is the first qualitative research study conducted in Jordan in this area of health care.This thesis has limitations of which one was that due to hospital policy some of the participants’ parents attended the two data collection periods and their presence may have impacted of the experiences expressed. The thesis concludes with a discussion of practice changes and future research projects in this area. Additional longitudinal, qualitative and prospective research studies are needed to explore the lived experiences of adolescents with HM to further identify the bio-psychosocial developmental changes that they experience during their illness journey
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