Filtyp
To avoid being detected by radar, it is necessary to reduce stealthy military platforms' radar cross section (RCS). The operation of overlaying the metasurface (MS) on the targets is a good solution. A simple chessboard MS structure that can achieve low RCS over a large bandwidth is proposed. Only one unit cell is used to construct the MS. First, the unit cell working in 0.5 and 1−λ modes is desig
Accurate statistical characterization of electromagnetic propagation is necessary for the design and deployment of radio systems. State-of-the-art channel models such as the Enhanced COST 2100 Channel Model utilize the concept of clusters of multipath components, and characterize channels by their inter- and intra-cluster statistics. Automatic clustering algorithms have been proposed in literature
Good hygiene, in both health care and the community, is central to containing the rise of antibiotic resistance, as well as to infection control more generally. But despite the well-known importance, the ecological mechanisms by which hygiene (or other transmission control measures) affect the evolution of resistance remain to be elucidated. Using metacommunity ecology theory, we here propose that
Context: Prototyping is an established practice within product and user interface design that is also used as a requirements engineering (RE) practice within agile development. Even so, there is a lack of theory on prototyping.Aims: Our main research objective is to support practitioners in improving on their prototyping practices.Method: We have designed a model that describes key aspects of the
Context: Software selection in large-scale software development continues to be ad hoc and ill-structured. Previous proposals for software component selection tend to be technology-specific and/or do not consider business or ecosystem concerns.Objective: Our main aim is to develop an industrially relevant technology-agnostic method that can support practitioners in making informed decisions when s
Understanding of electromagnetic propagation properties in real environments is necessary for efficient design and deployment of cellular systems. In this paper, we show a method to estimate high-resolution channel parameters with a massive antenna array in real network deployments. An antenna array mounted on a vehicle is used to receive downlink long-term evolution (LTE) reference signals from n
Opportunistic navigation using cellular signals is appealing for scenarios where other navigation technologies face challenges. In this paper, long-term evolution (LTE) downlink signals from two neighboring commercial base stations (BS) are received by a massive antenna array mounted on a passenger vehicle. Multipath component (MPC) delays and angle-of-arrival (AOA) extracted from the received sig
This paper deals with propagation and channel modeling for physically large arrays. The focus lies on acquiring a spatially consistent model, which is essential, especially for positioning and sensing applications. Ultra-wideband, synthetic array measurement data have been acquired with large positioning devices to support this research. We present a modified multipath channel model that accounts
When we develop general-purpose robot software components, we rarely know the full context that they will execute in. This limits our ability to make predictions, including our ability to detect program bugs early. Since running a robot is an expensive task, finding errors at runtime can prolong the debugging loop or even cause safety hazards. In this paper, we propose an approach to help develope
Context: Effective industry-academia collaboration may increase software engineering research relevance by increased realism, yet very challenging for reasons like confidentiality concerns, different objectives and priorities. Objective: We analyse industry-academia collaboration scenarios based on our own experiences as Ph.D. student and supervisor, and provide insights and recommendations to fac
Multiple concepts for future generations of wireless communication standards utilize coherent processing of signals from many distributed antennas. Names for these concepts include distributed MIMO, cell-free massive MIMO, XL-MIMO, and large intelligent surfaces. They aim to improve communica- tion reliability, capacity, as well as energy efficiency and provide possibilities for new applications t
This work presents the systematic design and optimization of a compact quad-element MIMO antenna system in a roof cavity for the expected channel behavior at a 700 MHz LTE band. Beginning with a standard low-profile antenna element, the desired radiation pattern is synthesized by structural modification. The configuration for a quad-element design is then optimized. The results show that the propo
BACKGROUND: Electronic health records (EHRs) are generated at an ever-increasing rate. EHR trajectories, the temporal aspect of health records, facilitate predicting patients' future health-related risks. It enables healthcare systems to increase the quality of care through early identification and primary prevention. Deep learning techniques have shown great capacity for analyzing complex data an
Multi-Criteria Evaluation Analysis (MCEA) is a decision making method employed to solve optimization problems that require the evaluation of a set of criteria to build an optimal decision. Where MCEA is integrated with GIS, optimization problems with spatial aspects, such as finding the best location of a facility across an area, could be solved. MCEA is implemented through different criteria dec
Sammanfattning Examensarbete i nationaleknomi vid Lunds universitet, kandidatuppsats, HT 2015 Seminariedatum: 2016.01.26 Författare: Henrik Bäckström Handeledare: Dag Rydorff Titel: Tjänar man på att investera sitt studielån? En undersökning av investeringsmöjligheter med lån från tre studiemedelssystem sedan 1981. Nyckelord: CSN, investering med belånat kapital, passiv placeringsstrategi.
Offentlig upphandling är en inköpsprocess av nyttjas av offentliga verksamheter såsom myndigheter och kommuner. Årligen spenderar Sverige ca 800 miljarder kronor via offentliga upphandlingar, vilket har en stor inverkan på miljön då dessa kontrakt ofta följer den linjära ekonomiska modellen, slit- och släng samhället. Begreppen cirkularitet och cirkulär ekonomi är relativt nya koncept som har de sThe EU procured for roughly 202000 MEUR (14% of the EU GDP) during 2021 in the public sector. The majority of these contracts are traditional, linear business model purchases. The EU has been developing several strategies, guidelines, and policies for sustainable purchasing, with Circular Public Procurement for a Circular Economy (CE) being one of them, but the implementation rate is low. Electron
Föreskrifter Centrum för europaforskning Postadress Box 117, 221 00 Lund Besöksadress Sandgatan 13A, Lund Telefon 046-222 48 35, 046-222 00 00 E-post helen.wiman@sam.lu.se Webbadress www.sam.lu.se Fakul te tss tyre lsen Förskrifter för Centrum för Europaforskning Dessa föreskrifter träder i kraft 2021-01-01 och ersätter tidigare beslutade föreskrifter för Centrum för Europaforskning (dnr A 10 S 20
https://www.cfe.lu.se/en/sites/cfe.lu.se.en/files/2021-04/F%C3%B6reskrifter_Centrum_f%C3%B6r_Europaforskning-2.pdf - 2026-05-22
SIMM25 FINAL 210210 1 GRADUATE SCHOOL METHODS COURSES SIMM25 Fieldwork Version 1.0 – Oktober 2020 SPRING 2021 2 1. WELCOME SIMM25 FIELDWORK Contact info Graduate School e-mail: master@sam.lu.se Home page: graduateschool.sam.lu.se Facebook: tinyurl.com/LUgradschoolFB Student Union Home page: samvetet.org Lund University Home page: http://lunduniversity.lu.se The university is on Youtube, Facebook a
https://www.graduateschool.sam.lu.se/sites/graduateschool.sam.lu.se/files/2021-03/SIMM25%20FINAL%20210210.pdf - 2026-05-22
Call for funds for infrastructure investments at LTH and guidelines for handling applications Page 1 of 6 LTH Faculty Office Kristin Scott, Research Coordinator CALL FOR PROPOSALS Reference number STYR 2024/3006 Date 2024-12-18 Call for funds for infrastructure investments at LTH and guidelines for handling applications. This call will be coordinated with calls from the Faculties of Science and Me
https://www.lthin.lth.se/sites/lthin.lth.se/files/2026-02/Call%20LTH%20infrastrucure%20funds%20budget%202026.pdf - 2026-05-22
Resursanvändning och samverkan mellan skola och socialtjänst vid barnavårdsutredningar EN MODELL FÖR BERÄKNING AV TID, KOSTNADER OCH SAMVERKAN Resursanvändning och samverkan mellan skola och socialtjänst vid barnavårdsutredningar EN MODELL FÖR BERÄKNING AV TID, KOSTNADER OCH SAMVERKAN Ulrika Westrup Anna Haraldsson Amanda Ricketts OM PART – PREVENTIVT ARBETE TILLSAMMANS Inom PART arbetar Landskron
