A Route Map for Successful Applications of Geographically Weighted Regression

Geographically Weighted Regression (GWR) is increasingly used in spatial analyses of social and environmental data. It allows spatial heterogeneities in processes and relationships to be investigated through a series of local regression models rather than a single global one. Standard GWR assumes that relationships between the response and predictor variables operate at the same spatial scale, which is frequently not the case. To address this, several GWR variants have been proposed. This paper describes a route map to decide whether to use a GWR model or not, and if so which of three core variants to apply: a standard GWR, a mixed GWR or a multiscale GWR (MS-GWR). The route map comprises 3 primary steps that should always be undertaken: (1) a basic linear regression, (2) a MS-GWR, and (3) investigations of the results of these in order to decide whether to use a GWR approach, and if so for determining the appropriate GWR variant. The paper also highlights the importance of investigating a number of secondary issues at global and local scales including collinearity, the influence of outliers, and dependent error terms. Code and data for the case study used to illustrate the route map are provided.     

A TRADE ROUTE FROM THE PROPONTIS TO PHRYGIA: ASSESSING THE ECONOMIC STATUS OF KIOS BETWEEN THE ARCHAIC AND THE EARLY HELLENISTIC PERIODS

This article proposes a reassessment of the role that Kios played as a nexus of trade between the northern Aegean, the Black Sea and inland north-west Anatolia. The city was founded as an emporium at the end of the seventh century BC and joined the Delian League in the following century. The autonomous city was subsequently ruled by a Persian dynasty during the fourth century BC, while retaining its Greek identity. Three groups of ceramics will be analysed for this reassessment: one from rescue excavations at Kios itself; another from surveyed sites in the surrounding region; and a third from other excavated settlements. It is argued that both locally-produced fine wares and transport amphoras allow chronological periods to be traced to relatively high resolutions, and that these reveal Kios to have been a significant market town that was deeply involved in trade with the Aegean and the Black Sea.     

Circulation of Coronavirus Images: Helping Social Distancing?

As soon as the SARS-Cov2 disease was recognized by experts to potentially cause a serious pandemic, a three dimensional diagrammatic image of the virus, colored in strong red, conquered public media globally. This study confronts this iconic virus image with a historic image analysis of 33,000 biomedical articles on coronaviruses published between 1968–2020 and interviews with some of their authors. Only a small fraction of scientific virus publications entail images of the complete virus. Red as an alarm color is not used at all by scientists who don't aim for a non-scientific public. Circulation in this case concerns the movement of iconic images from a scientific context into a general public. On the basis of hps-studies on scientific diagrams and especially on color use in scientific diagrams to convey specific messages in public, the paper discusses the role of the claim of public corona-virus diagram as “scientific.” It points at relevant differences between most frequent scientific corona-virus images and the diagrammatic image used in public. Both author- and readerships (in science and public) follow contrasting aims and values. Thus, the images meet non-expert readers for whom the images entail very different – and potentially unintended – meanings then to virus experts.     

Karl der Große,Alkuin und die Zeitrechnung

In connection with the Carolingian renewal of education Charlemagne also cared for a homogeneous reckoning of time. He organized the Carolingian reform of the calender with the help of Alkuin of York, an Anglo‐Saxon scholar. Having heard of Alkuin's learning and teaching abilities, the Frankish King invited him to lead his Palace school at Aachen. Moving to Francia 782, Alkuin became the key counselour of Charlemagne for science, education and church matters. Among other subjects Alkuin taught the King especially calendrical reckoning (computus) and astronomy, in which he took a special personal interest. Charlemagne discussed these subjects often with Alkuin, sometimes even in letters, still preserved today. For this correspondence on astronomy and calendrical reckoning it was assumed that Alkuin was the author of four short anonymous writings on computus. Moreover, Charlemagne comissioned Alkuin to write a standard work on computus, which is lost today. But three Carolingian manuals on computus survived. Which of the four anonymous writings really stem from Alkuin himself? What influence he had upon the manuals? These two questions are investigated here on the basis of the most important matter of computus: the calculation of the age of the moon in the 19‐year lunar cycle, necessary for dating the movable feast of Easter (on the first Sunday after the first full moon in spring). These facts were discussed in detail, even vehemently, in the correspondence between Alkuin and Charlemagne.     

Raumplanung im Wandel

Verglichen mit vielen anderen, auch europ?ischen L?ndern, existiert in der Bundesrepublik Deutschland seit vielen Jahren ein ausgeklügeltes und komplexes System der Raumordung. Seit den ersten Anf?ngen hat sich viel ver?ndert. DIPL.-GEOGR. UTE C. BAUER sprach mit PROF. DR. DIETRICH FüRST, früher Professor für Landesplanung und Regionalforschung an der Universit?t Hannover, über den Wandel, den die Raumordnung in den letzten Jahrzehnten durchgemacht hat. Als Experte für Regionalentwicklung und -?konomie erl?utert er die wichtigsten Tendenzen und Aufgaben, denen sich die Disziplin heute stellen mu?.     

“Who Is Reciting the Name of the Buddha?” as Gongan in Chinese Chan Buddhism

Chan Buddhism’s ambivalent relationship with language and literature is perhaps most starkly seen in its practice of gongan meditation. This practice was first instituted by the famous Linji master Dahui and involves an intense meditational focus on the “punch line” (huatou) of what is typically a story about an ancient Chan master or an enigmatic question like “why did [the legendary founder of Chan] Bodhidharma come from the West?” In the Ming dynasty, a new gongan became widely used in Chan meditation: the phrase “who is reciting the name of the Buddha?” This was a reference to the widespread practice of chanting homage to the Buddha Amitābha in hope of getting reborn into his paradise. In using this new gongan, Chan seemingly embraced oral practice in an unprecedented move and appeared to combine the other-power of Amitābha worship with the self-power of Chan meditation. Scholars have struggled to understand this development, and several have dismissed it as an example of the degeneration of Chan and its later pandering to lay people. I argue that the development of this gongan can best be seen as an attempt to reframe the practice of Buddha-recitation in a Chan meditative framework; and further explore the rationale for the practice as given by the influential Buddhist thinker Yunqi Zhuhong, who was a staunch advocate of Buddha-recitation.