Estimating The Import Demand Function of Citrus In Saudi Arabia Using Differentiated AIDS Model

This paper has used the (AIDs) model to study and analyze the import demand for citrus (Orange, Mandarin, Lemon) of the kingdom of Saudi Arabia. Further, the level of competition and the sepraability among the main sources of importation (Egypt, Jordan, Lebanon and other countries) has been investigated. The method of estimating the demand function includes both iterative and regular seemingly unrelated regression. This paper has also considerd imposing the necessary demand conditions such as (additivity, homogeneity and symmetry). By applying such conditions to the demand functions, the study provided the relevant demand elasticities for the sources of importation. The main results of the study show that the demand of imported Orange is price elastic. However Lemon is found to be affected by other factors rather than its own price. Such factors are income and prices of other commodities. Further, the study shows Mandarin to have price inelastic demand, with no apparent substitutability with Orange. As far as the sources of goods, this study shows a considerable competition among Eygept, Jordn and Lebanon. Finally, in the Orange import market, consumer preferences indicated more bias towards Egypt and Lebanon than to Jordan

Archeologische Rapporten bergen op Zoom 2

Een kleinschalig onderzoek in de binnenstad, op een achtererf van de Goudenbloemstraat. Bij het uitgraven van een grote vijver stuitte de eigenaar op skeletresten. Nader onderzoek wees uit dat onder de tuin de oude grens tussen het Minderbroederkerkhof en het huisperceel gesitueerd was. Twee begravingen in situ dateerden uit de 16de of 17de eeuw. Oudere sporen bestonden uit een greppel uit de 14de eeuw en een omvangrijke beerkuil uit de vroege 16de eeuw

The Lockdown Effect: Implications of the COVID-19 Pandemic on Internet Traffic

Due to the COVID-19 pandemic, many governments imposed lockdowns that forced hundreds of millions to stay at home. As a result of these measures, Internet traffic of residential users increased, in particular, for remote working, entertainment, commerce, and education. In turn, traffic demands in the Internet core shifted as well. In this paper, using data from a diverse set of vantage points (one ISP, three IXPs, and one metropolitan educational network), we study the effect of these lockdowns on traffic shifts. We find that the traffic volume increased by 15-20% almost within a week---while overall still modest, this constitutes a large increase within this short time period. The Internet infrastructure is able to handle this increase, as most traffic shifts occur outside of traditional peak hours. When looking at traffic sources, we find that while hypergiants still contribute a significant fraction of traffic, we see a higher increase in traffic of non-hypergiants. We observe traffic increases in applications that people use when at home, such as Web conferencing, VPN, and gaming. While many networks see increased traffic demands, in particular, residential users, others see major decreases, e.g., in the educational network.BMBF, 16DII111, Verbundprojekt: Weizenbaum-Institut für die vernetzte Gesellschaft - Das Deutsche Internet-Institut; Teilvorhaben: Wissenschaftszentrum Berlin für Sozialforschung (WZB)BMBF, 16KIS0691, Verbundprojekt: 5G Lösungen für die vernetzte Mobilität der Zukunft - 5GNetMobil -; Teilvorhaben: Zuverlässige, kognitive und agile Kommunikationslösungen für die taktil vernetzte MobilitätBMBF, 16KIS0975K, KMU-innovativ-Verbundprojekt: Artificial Intelligence-based DDoS Mitigation at Internet Exchange Points - AIDOS -; Teilvorhaben: Data-Driven IXP DDoS MitigationEC/H2020/679158/EU/Resolving the Tussle in the Internet: Mapping, Architecture, and Policy Making/ResolutioNe

A Prototype Design for a Virtual Hospice and Initial Usability Study

Hospice provides physical, social, emotional and spiritual care for people with life-shortening illness. Providing equitable access to services is becoming increasingly difficult for all hospices due to a rising number of people living longer with life-shortening illness and limited healthcare resources. Consequently, hospices are increasingly looking at ways of using technology to deliver services over a distance. This paper presents a prototype design for a web-based system (‘virtual hospice’) to improve access to services provided by Highland Hospice in the UK, and an initial usability study involving three elderly male patients. Participants completed most of the usability tasks, made positive comments, and would definitely or likely recommend the system to people who might benefit from it. The findings were translated into recommended changes to the virtual hospice, and may be helpful for other HCI designers and researchers working in this area

Strategien zur Reduzierung des Muellaufkommens Recycling aus der Sicht des Industrial Designs. Abschlussbericht

SIGLEAvailable from TIB Hannover: F96B129 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman