Lösung: Man kann die Ebene mit Sechsecken überdecken. Nimmt man die Mittelpunkte der Sechsecke als Punkte für ein Voronoidiagramm, dann haben alle genau 6 Nachbarn, und die Voronoi Polygone sind gerade die Sechsecke. Gäbe es eine Punkteverteilung, bei der jeder Punkt mehr als sechs Nachbarn hätte, dann könnte man die Punkte so hinschieben, dass die Voronoi Polygone regelmässige n-Ecke mit n > 6 wären. Eine solche Überdeckung der Ebene gibt es aber nicht (wie man sich leicht aus einer Betrachtung der Winkel überlegen kann).

Computational geometry

This article investigates the psychological well‐being of students from all faculties across their undergraduate degree from pre‐registration to semester two of year three at one UK university. Data were collected on seven occasions, with 66% of students who began their studies between 2000 and 2002 taking part in the project. Psychological well‐being was assessed using the General Population Clinical Outcomes in Routine Evaluation (GP‐CORE). Results show that greater strain is placed on well‐being once students start university compared to pre‐university levels. Levels of strain are generally highest during semester one, with significant reduction in levels of distress from semester one to semester two being observed in both year one and year three. At no time did levels of distress fall to pre‐registration levels. Given these results show university to be a time of heightened distress, there is a need to ensure that students receive the support necessary throughout their studies to enable them to succes...

Changes in undergraduate students’ psychological well‐being as they progress through university

We survey parallel programming models and languages using six criteria to assess their suitability for realistic portable parallel programming. We argue that an ideal model should by easy to program, should have a software development methodology, should be architecture-independent, should be easy to understand, should guarantee performance, and should provide accurate information about the cost of programs. These criteria reflect our belief that developments in parallelism must be driven by a parallel software industry based on portability and efficiency. We consider programming models in six categories, depending on the level of abstraction they provide. Those that are very abstract conceal even the presence of parallelism at the software level. Such models make software easy to build and port, but efficient and predictable performance is usually hard to achieve. At the other end of the spectrum, low-level models make all of the messy issues of parallel programming explicit (how many threads, how to place them, how to express communication, and how to schedule communication), so that software is hard to build and not very portable, but is usually efficient. Most recent models are near the center of this spectrum, exploring the best tradeoffs between expressiveness and performance. A few models have achieved both abstractness and efficiency. Both kinds of models raise the possibility of parallelism as part of the mainstream of computing.

/pdf/models-and-languages-for-parallel-computation-1sticvkm4u.pdf

Models and languages for parallel computation

The relationship between personal unsecured debt and mental and physical health: a systematic review and meta-analysis.

The COVID-19 pandemic and its accompanying infection control measures introduced significant disruptions to the routines of many higher education students around the world. It also deprived them of in-person counselling services and social support. These changes have put students at a greater risk of developing mental illness. The objective of this review is to assess the prevalence of depressive symptoms, anxiety symptoms and sleep disturbances in higher education students during the pandemic. A systematic search of English and Chinese databases was conducted current to January 1st, 2021. The quality of included studies was evaluated using a modified Newcastle-Ottawa scale. Prevalence of depressive symptoms, anxiety symptoms and sleep disturbances were pooled using random-effects meta-analysis. Eighty-nine studies (n=1,441,828) were included. The pooled prevalence of depressive symptoms, anxiety symptoms, and sleep disturbances was 34%, 32% and 33%, respectively. The prevalence values differ based on geographical regions, diagnostic criteria, education level, undergraduate year of study, financial situation, living arrangements and gender. Overall, the prevalence of depressive symptoms and anxiety symptoms synthesized in this study was higher compared to pre-pandemic prevalence in similar populations. Evidently, mental health screening and intervention should be a top priority for universities and colleges during the pandemic.

The prevalence of depressive symptoms, anxiety symptoms and sleep disturbance in higher education students during the COVID-19 pandemic: A systematic review and meta-analysis.

The present paper provides an analysis of the relationship between attitudes toward debt and mental health among university undergraduates. Data were collected from the same cohort of students across their three years of university, with responses from 2146, 1360 and 1391 first, second and third year students, respectively. Mental health was measured using the General Population version of the Clinical Outcomes in Routine Evaluation (GP-CORE). Attitudes toward debt were measured using items that tapped current financial concerns and worry about debt on leaving university. Results showed that students become more concerned about their finances as they progress through university, that there was no relationship between anticipated debt and mental health and that attitudes toward debt were related to mental health levels. Students who were identified as having high financial concerns possessed significantly worse CORE-GP scores than students with low financial concern in all three years of university. In all...

Student debt and its relation to student mental health

The number of students entering Higher Education in the UK continues to increase, and there is no sign of an end to this trend. This expansion brings with it a more diverse student body — students ...

https://www.tandfonline.com/doi/pdf/10.11120/ital.2002.01010003

Diversity and Motivation in Introductory Programming

We describe a project exploring the relationships between factors in the learning environment, student well-being and learning outcomes, in the context of a Computing department A range of established psychometric tests identified areas of unhelpful stress in the working environment and measures were implemented to rectify these A significant improvement in measured student well-being followed

Student well-being in a computing department

machine models have played an important, although frequently unacknowledged, role in the development of modern computing systems. They provide a precise definition of vital concepts, allow system complexity to be managed by providing appropriate views of the activity under consideration, enable reasoning about the correctness and quantitative performance of proposed problem solutions, and encourage communication through a common medium of expression. This volume attempts to demonstrate the importance of that role in contemporary systems, in conjunction with parallel and distributed computing. The proponents of parallel and distributed models have traditionally considered themselves to be separate. However, this text indicates a significant contemporary interest in both of these communities in a common hardware model: a set of workstation-class machines connected in a high-performance network. It therefore shows that the traditional parallel/distributed distinction appears to be under threat.

Abstract Machine Models for Parallel and Distributed Computing

This paper describes a strategy for the structuring and analysis of parallel code, using shared abstract data types (SADTs). SADTs are used to provide scalability, and support for modular and portable code development. An example of their usage is presented for a dynamic load balancing method. A framework for performance analysis is described, using an extension of the bulk synchronous parallelism (BSP) approach, and performance results are presented for the Cray T3D.

/pdf/a-parallelisation-approach-for-supporting-scalable-and-5w3s7qa827.pdf

A Parallelisation Approach for Supporting Scalable and Portable Computing

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