Using an Electronic Text-Matching Tool (Turnitin) to Detect Plagiarism in a New Zealand University

This paper is concerned with reporting the experience and findings of staff using a commercially-available textmatching tool (Turnitin) to detect plagiarism in a university setting in New Zealand. The use of actual instances of plagiarism revealed through Turnitin in a teaching department is a departure from the more usual selfreporting methodology used in many plagiarism research papers. The paper concludes by asking questions of the implications for institutions, teaching staff and students

Improvements in the Perceived Quality of Streaming and Binaural Rendering of Ambisonics

With the increasing popularity of spatial audio content streaming and interactive binaural audio rendering, it is pertinent to study the quality of the critical components of such systems. This includes low-bitrate compression of Ambisonic scenes and binaural rendering schemes. This thesis presents a group of perceptual experiments focusing on these two elements of the Ambisonic delivery chain. The first group of experiments focused on the quality of low-bitrate compression of Ambisonics. The first study evaluated the perceived timbral quality degradation introduced by the Opus audio codec at different bitrate settings and Ambisonic orders. This experiment was conducted using multi-loudspeaker reproduction as well as binaural rendering. The second study has been dedicated to auditory localisation performance in bitrate-compressed Ambisonic scenes reproduced over loudspeakers and binaurally using generic and individually measured HRTF sets. Finally, the third study extended the evaluated set of codec parameters by testing different channel mappings and various audio stimuli contexts. This study was conducted in VR thanks to a purposely developed listening test framework. The comprehensive evaluation of the Opus codec led to a set of recommendations regarding optimal codec parameters. The second group of experiments focused on the evaluation of different methods for binaural rendering of Ambisonics. The first study in this group focused on the implementation of the established methods for designing Ambisonic-to-binaural filters and subsequent objective and subjective evaluations of these. The second study explored the concept of hybrid binaural rendering combining anechoic filters with reverberant ones. Finally, addressing the problem of non-individual HRTFs used for spatial audio rendering, an XR-based method for acquiring individual HRTFs using a single loudspeaker has been proposed. The conducted perceptual evaluations identified key areas where the Ambisonic delivery chain could be improved to provide a more satisfactory user experience

Solid-State Microwave Electronics

Contains reports on three research projects.National Aeronautics and Space Administration (Grant NGR-22-009-163

Solid-State Microwave Electronics

Contains reports on three research projects.National Aeronautics and Space Administration (Grant NGL 22-009-163)Joint Services Electronics Programs (U. S. Army, U. S. Navy, and U. S. Air Force) under Contract DA 28-043-AMC-02536(E

Solid-State Microwave Electronics

Contains reports on three research projects.National Aeronautics and Space Administration (Grant NGL-22-009-163)Joint Services Electronics Programs (U.S. Army, U.S. Navy, and U.S. Air Force)under Contract DA28-043-AMC-02536(E

Promjene intra-abdominalnog, ilijačno venskog i centralnog venskog tlaka u bolesnika podvrgnutih abdominalnom kirurškom zahvatu zbog velikih tumora debelog crijeva – probno ispitivanje

Changes in intra-abdominal pressure during bowel tumor surgery have not been documented. The purpose of the present study was to analyze changes in intra-abdominal pressure (IAP), central venous pressure (CVP) and iliac venous pressure (IVP) in patients undergoing laparotomy due to large tumor of the bowel. Twenty-one adult patients undergoing elective abdominal surgery were examined. Intra-abdominal pressure, CVP and IVP were measured during anesthesia, surgery and early postoperative period. The mean IAP before anesthesia was 12.76±1.09 mm Hg and mean bowel tumor volume 1550±227.48 mL. Anesthesia induction decreased IAP to 10.52±1.32 mm Hg and excision of intra-peritoneal tumors to 5.24±1.51 mm Hg (49.7%). Ten minutes after anesthesia, IAP increased to 7.47±1.2 mm Hg and one hour after surgery decreased to 6.19±1.43 mm Hg. There was a strong overall correlation between IAP and CVP (P=0.0000; r=0.7779), as well as between IAP and IVP (P=0.0000; r=0.8635). Moreover, IAP correlated with IVP immediately after anesthesia and one hour after anesthesia. In conclusion, induction of anesthesia decreased IAP; excision of large bowel tumors decreased IAP; and IAP strongly correlated with CVP and IVP.Promjene intra-abdominalnog tlaka tijekom operacijskog zahvata zbog crijevnog tumora nisu dokumentirane. Svrha ovoga ispitivanja bila je ispitati promjene intra-abdominalnog tlaka (IAT), centralnog venskog tlaka (CVT) i ilijačno venskog tlaka (IVT) u bolesnika podvrgnutih laparotomiji zbog velikog crijevnog tumora. Ispitan je 21 odrasli bolesnik podvrgnut elektivnoj abdominalnoj kirurgiji. IAT, CVT i IVT mjereni su tijekom anestezije, operacije i ranog poslijeoperacijskog razdoblja. Srednji IAT prije anestezije bio je 12,76±1,09 mm Hg, a srednji volumen crijevnog tumora 1550±227,48 mL. Indukcija anestezije snizila je IAT na 10,52±1,32 mm Hg, a ekscizija intraperitonejskog tumora na 5,24±1,51 mm Hg (49,7%). Deset minuta nakon anestezije IAT se povisio na 7,47±1,2 mm Hg, a jedan sat nakon operacije snizio na 6,19±1,43 mm Hg. Zabilježena je visoka sveukupna korelacija između IAT i CVT (P=0,0000; r=0,7779) te između IAT i IVT (P=0,0000; r=0,8635). Štoviše, IAT je korelirao s IVT odmah nakon anestezije i jedan sat nakon anestezije. U zaključku, indukcijom anestezije snizio se IAT, uklanjanje velikog crijevnog tumora dovelo je do sniženja IAT, te je utvrđena visoka korelacija IAT s CVT i IVT

Successful cooling of a pixel tracker using gaseous helium: studies with a mock-up and a detector prototype

We report the successful operation of a functional pixel detector with gaseous helium cooling. Using an accurate mock-up beforehand, the cooling was validated. We use a miniature turbo compressor to propel the helium at $2\,g/s$ under ambient pressure conditions with gas temperatures above $0^{\circ}C$. Our earlier results based on computational fluid dynamics simulations and a much simpler mock-up are confirmed. With this, we paved the path to cool pixel detectors in experimental particle physics at heat densities up to $400\, mW/cm^2$ using helium. This enables cooling of detectors with very low mass requirements, minimising the effects of multiple Coulomb scattering effectively. The concept presented here is not limited to pixel detector applications and can be used to cool any surface with comparable heat-densities, only limited by shaping the helium gas flow

Atypical course of type 1 diabetes mellitus in a patient with Ollier's disease - a case report

Background Nowadays, we can distinguish more than two types of diabetes mellitus. Due to blood glucose measurement and genetic tests, different types of diabetes (such as autoimmune, monogenetic, atypical) can be detected. Despite the constantly updated recommendations and the progress of diagnostic tests, making a diagnosis may be difficult. Case report A 23-year old patient was admitted to the Department of Endocrinology due to diagnosed diabetes mellitus to determine its primary cause. Elevated blood glucose level was identified during periodic medical test and was confirmed by OGTT test. In the patient’s medical history: Ollier’s disease with multiple enchondromas, treated surgically in childhood, no typical symptoms and risk factors of hyperglycaemia.  During hospitalization the laboratory tests showed decreased level of C-peptide, nevertheless the patient represented acceptable levels of glycaemia following only by diet restriction. MODY, LADA and diabetes due to Ollier’s disease was speculated. Due to suspicion of autoimmunological cause the diagnostic was extended by testing antibodies: IAA, IA2, GAD, IC, which confirmation allowed to recognise untypical diabetes mellitus type 1. The patient objected to insulin treatment, limited it only to a diet and maintained normoglycemia for 15months. However, after an increase in glycaemia and in HbA1c, insulin therapy was introduced. Disscussion with conclusion Atypical course of diabetes should be considered in patients with a known disorder or with comorbidities associated with diabetes and without typical symptoms of hyperglycaemia. Atypical forms of diabetes are uncommon and require etiology-specific therapies