Altimetry for the future: Building on 25 years of progress

In 2018 we celebrated 25 years of development of radar altimetry, and the progress achieved by this methodology in the fields of global and coastal oceanography, hydrology, geodesy and cryospheric sciences. Many symbolic major events have celebrated these developments, e.g., in Venice, Italy, the 15th (2006) and 20th (2012) years of progress and more recently, in 2018, in Ponta Delgada, Portugal, 25 Years of Progress in Radar Altimetry. On this latter occasion it was decided to collect contributions of scientists, engineers and managers involved in the worldwide altimetry community to depict the state of altimetry and propose recommendations for the altimetry of the future. This paper summarizes contributions and recommendations that were collected and provides guidance for future mission design, research activities, and sustainable operational radar altimetry data exploitation. Recommendations provided are fundamental for optimizing further scientific and operational advances of oceanographic observations by altimetry, including requirements for spatial and temporal resolution of altimetric measurements, their accuracy and continuity. There are also new challenges and new openings mentioned in the paper that are particularly crucial for observations at higher latitudes, for coastal oceanography, for cryospheric studies and for hydrology. The paper starts with a general introduction followed by a section on Earth System Science including Ocean Dynamics, Sea Level, the Coastal Ocean, Hydrology, the Cryosphere and Polar Oceans and the ‘‘Green” Ocean, extending the frontier from biogeochemistry to marine ecology. Applications are described in a subsequent section, which covers Operational Oceanography, Weather, Hurricane Wave and Wind Forecasting, Climate projection. Instruments’ development and satellite missions’ evolutions are described in a fourth section. A fifth section covers the key observations that altimeters provide and their potential complements, from other Earth observation measurements to in situ data. Section 6 identifies the data and methods and provides some accuracy and resolution requirements for the wet tropospheric correction, the orbit and other geodetic requirements, the Mean Sea Surface, Geoid and Mean Dynamic Topography, Calibration and Validation, data accuracy, data access and handling (including the DUACS system). Section 7 brings a transversal view on scales, integration, artificial intelligence, and capacity building (education and training). Section 8 reviews the programmatic issues followed by a conclusion

Altimetry for the future: building on 25 years of progress

In 2018 we celebrated 25 years of development of radar altimetry, and the progress achieved by this methodology in the fields of global and coastal oceanography, hydrology, geodesy and cryospheric sciences. Many symbolic major events have celebrated these developments, e.g., in Venice, Italy, the 15th (2006) and 20th (2012) years of progress and more recently, in 2018, in Ponta Delgada, Portugal, 25 Years of Progress in Radar Altimetry. On this latter occasion it was decided to collect contributions of scientists, engineers and managers involved in the worldwide altimetry community to depict the state of altimetry and propose recommendations for the altimetry of the future. This paper summarizes contributions and recommendations that were collected and provides guidance for future mission design, research activities, and sustainable operational radar altimetry data exploitation. Recommendations provided are fundamental for optimizing further scientific and operational advances of oceanographic observations by altimetry, including requirements for spatial and temporal resolution of altimetric measurements, their accuracy and continuity. There are also new challenges and new openings mentioned in the paper that are particularly crucial for observations at higher latitudes, for coastal oceanography, for cryospheric studies and for hydrology. The paper starts with a general introduction followed by a section on Earth System Science including Ocean Dynamics, Sea Level, the Coastal Ocean, Hydrology, the Cryosphere and Polar Oceans and the “Green” Ocean, extending the frontier from biogeochemistry to marine ecology. Applications are described in a subsequent section, which covers Operational Oceanography, Weather, Hurricane Wave and Wind Forecasting, Climate projection. Instruments’ development and satellite missions’ evolutions are described in a fourth section. A fifth section covers the key observations that altimeters provide and their potential complements, from other Earth observation measurements to in situ data. Section 6 identifies the data and methods and provides some accuracy and resolution requirements for the wet tropospheric correction, the orbit and other geodetic requirements, the Mean Sea Surface, Geoid and Mean Dynamic Topography, Calibration and Validation, data accuracy, data access and handling (including the DUACS system). Section 7 brings a transversal view on scales, integration, artificial intelligence, and capacity building (education and training). Section 8 reviews the programmatic issues followed by a conclusion

Patients' experiences of undergoing surgery : From vulnerability towards recovery -including a new, altered life

The overall aim of this thesis was to explore patients’ experiences of undergoing surgery, including their perceptions of quality of care and recovery. A mixed methods design was used, and studies with qualitativemethods (I, II) and quantitative methods (III, IV, V) were performed. Data were collected through interviews with ten patients after gastric bypass surgery (I) and nine patients after lower limb fracture surgery (II) and weresubjected to qualitative content analysis. Data were also collected using two standardized questionnaires; The Quality from Patient’s Perspective (III) and Postoperative Recovery Profile (IV, V). A total of 170 orthopedicand general surgery patients participated in study III. In study IV and V, 180 patients participated. Accordingly, 170 of patients were the same in study III, IV and V. Data were analyzed by descriptive statistics (III, IV, V)and a manifest content analysis of the free-text answers (III) as well as with analytical statistics (IV, V). Prior to surgery, patients undergoing gastric bypass surgery (I) described a sense of inferiority related to their obesity. In the post-anesthesia care unit, patients felt both omitted and safe in the unknown environment and expressed needs to have the staff close by. Despite the information provided prior to surgery it was difficult toimagine one’s situation after homecoming, thus it was worth it so far and visions of a new life were described. Patients undergoing lower limb surgery (II) described feelings of helplessness when realizing the seriousness oftheir injury. The wait prior to surgery was strain, and patients needed orientation for the future. They remained awake during surgery and expressed feelings of vulnerability during this procedure. In the post-anesthesia careunit, patients expressed a need to have control and to feel safe in their new environment. Mobilizing and regaining their autonomy were struggles, and patients stated that their recovery was extended. The quality of theperioperative care was assessed as quite good (III). While undergoing a surgical procedure (III), the areas identified for improvement were information and participation. Patients preferred to hand over the decisionmakingto staff and indicated that having personalized information about their surgery was important. However, too detailed information before surgery could cause increased anxiety (III). After surgery, orthopedic patientswere substantially less recovered than general surgery patients (IV, V). Approximately two-thirds of orthopedic patients and half of general surgery patients perceived severe or moderate pain in the first occasion (day 1-4after surgery) (IV). Both the orthopedic and general surgery group showed a significant systematic change at a group level towards higher levels of recovery after one month compared with day 1-4 after surgery. The same patterns occurred regarding acute and elective surgery (V). Patients overall recovered better (IV, V) after a gastric bypass, than after other surgeries. Compared with the period prior to surgery; certain Gastric bypass patients felt after one month that they had improved (IV). The orthopedic groups assessed their psychologicalfunction as being impaired after one month compared with the first occasion (IV, V). The overall view of patients’ experiences of undergoing surgery (I-V) can be understood as a trajectory, from vulnerability towards recovery, including a new, altered life. Patients’ experiences and perceptions of the caregiven (I, II, III) are embedded within this trajectory. As a thread in this thesis, through all studies, patients expressed vulnerability in numerous ways. A progress towards recovery with regards to regaining preoperativelevels of dependence/independence could be concluded. Thus, for patients undergoing gastric bypass surgery, a view of a new, altered life after surgery was also discernible. While undergoing surgery, satisfaction with theprovision of information not necessarily include receiving as much and the most detailed information as possible; nevertheless, the need for information to a great extent is personal. The recovery-period for orthopedic patients is strain, and the support must be improved. In conclusion, the perioperative support may contain a standardized part, made-to-order to the general procedure commonly for all patients, such as information about the stay in the post anesthesia care unit. Moreover, the support should be person-centered, accounting for the patients’ expectations about the future but also tailored to the specific surgical procedure; with its limitations and possibilities. Then, patients in a realistic way would be strengthened towards recovery, including a new, altered life.<p>Godkänd; 2015; 20150317 (angfor); Nedanstående person kommer att disputera för avläggande av filosofie doktorsexamen, Namn: Angelica Forsberg Ämne: Omvårdnad / Nursing Avhandling: Patients’ Experiences of Undergoing Surgery From Vulnerability Towards Recovery – Including a New, Altered Life Opponent: Professor Ewa Idvall Institutionen för vårdvetenskap Malmö högskola/Skånes universitetssjukhus Ordförande: Universitetslektor Agneta Larsson Institutionen för hälsovetenskap Luleå tekniska universitet Tid: Fredag den 24 april 2015, kl. 09.00 Plats: D770, Luleå tekniska universitet</p

Samtal om barns övervikt och fetma : -förälders erfarenheter av samtal med distriktsköterskor, en litteratur översikt

2022-10-31</p

Kvinnors hanteringsstrategier vid fibromyalgi : en litteraturstudie

Validerat; 20101217 (root