Evolutionary Foraging Models in Zooarchaeological Analysis: Recent Applications and Future Challenges

The last few decades have witnessed a rapid rise in the use of foraging models derived from behavioral ecology to explain and predict temporal and spatial differences in faunal assemblages. Although these models build on conventional ideas about utility firmly embedded in zooarchaeological analyses, when cast in an evolutionary framework these ideas produce some of the most sophisticated and elegant interpretations of archaeofaunas to date. In this article I review the methodological and practical strengths and weaknesses of current zooarchaeological applications of foraging models. Recent applications of foraging models to the zooarchaeological record reveal important variability in human-prey interactions across time and space. Case-specific applications generate theoretical and methodological advances that augment and are complementary to model building in allied fields. Recent applications also identify shortcomings in the underlying assumptions and rationale of some foraging models that mirror past and on-going discussions in anthropology and biology. I discuss how these shortcomings can fruitfully direct future applications and research in foraging economics.     

网络时代史学研究手段的革新--试论学术性数据库在史学研究中的应用

伴随着数字化、网络化的高速发展 ,各式各样的学术性数据库应运而生 ,学术文献载体的形式、结构、功能及生存环境因之发生根本性变革。数据库作为新的史学研究手段 ,在提高科研效率、改变历史学资料收集各环节的工作方式、及时追踪国内外研究最新动向、以及丰富资料来源等方面使史学研究产生了革命性的变化 ,将引发传统史学的革命     

Tom's Tambu House: Spacing,Status and Sacredness in South Malakula,Vanuatu

This paper is based on video footage I filmed in South Malakula in April 1996. It explores the case of Tom Moses, a man who claims to speak with God. He has constructed a house on the outskirts of Milip village which he has declared tambu, or taboo/sacred. Around it he envisions a new living space, following directions given to him from God. I argue that Tom's enterprise can be understood in terms of a spacing—status—sacredness nexus. This nexus is grounded in a pre-Christian Malakulan sociality revolving around men's houses, ancestral worship and grade-taking rituals. This takes place with a lived Christianity which in many contexts is expressed as a departure from kastom. As such, I argue that this ‘spatial’ analysis can help us understand dimensions of local human relationships which purely discursive analyses sometimes eclipse.     

A Classification of Models in Economic Geography

Models used in economic geography are classified on the basis of a general scientific classification of models which distinguishes two broad categories: ideal and material models. Ideal models are further categorized as visual, symbolic, and mathematical models, and material models as natural, physical, and mathematical models. Examples of each type are suggested. Other possible typologies of models can be devised; for example, logical, graphic, and mathematical models, representing a logical progression of scientific research. Models can be divided into general and particular models, depending on whether they treat aggregates or individual aspects. The complete model of a regional territorial-production complex would be a system of general and particular models. In terms of content, models can be classified as structural, functional, or synthetic (structural-functional) models. Finally, there could be a typology distinguishing static and dynamic models, nonoptimized and optimized models, and varying categories of prediction (models of an existing situation, planning models, predictive models).     

Models of Space Searching in Urban Areas

City dwellers occasionally must seek jobs, dwellings, or particular services or goods. Two very different ways exist by which the individual may conduct such a search. Lacking prior information, the person may elect to visit perceived possible locations until an appropriate one is found. Alternatively, an address may first be ascertained and then visited by finding a path to it. Clearly, there is a substantial difference between these two methods in terms of the amount of spatial movement they require in order to satisfy the searcher's needs. In this paper, this difference is modeled for situations that vary in terms of the density of acceptable end points of the search, as well as in characteristics of the signs of these end points, their patterns, and the level of information with which the searcher may begin.     

The Use of Electric Models in Geography

The use of electrical models, such as conducting sheet analogues, in geography is based on the fact that a wide variety of problems, say, the flow of groundwater and an electrical current, are founded on the same set of differential equations. The technique of electrical analogues is found to be useful in the solution of a number of geographical problems that cannot always be handled effectively by electronic computers. For example, conducting sheet analogues can be used to obtain map transformations in which area is proportional to the magnitude of a particular mapped feature, for example, equidemic projections in which countries or continents are mapped on the scale of their population density. Other problems that may be suitable for analogue simulation include those involving population potential as well as those in which optimization calls for least cost or least effort.     

Statistical Inferences in Bidimensional Regression Models

This paper proposes formal procedures of significance tests for bidimensional regression models (Tobler 1994): (1) significance tests of estimated parameters, (2) significance tests of bidimensional correlation coefficient, and (3) significance tests for comparison of bidimensional regression models. These tests are demonstrated by reexamination of the cognitive map study in Kanazawa City (Wakabayashi 1994). The empirical results statistically support the systematic distortion in the cognitive map, enlargement and rotation, indicated by the Euclidean model in the previous study, and discern the affine model as a more proper model that can identify more components of systematic cognitive distortion.     

Dynamic Models in Space and Time

This paper presents a first‐order autoregressive distributed lag model in both space and time. It is shown that this model encompasses a wide series of simpler models frequently used in the analysis of space‐time data as well as models that better fit the data and have never been used before. A framework is developed to determine which model is the most likely candidate to study space‐time data. As an application, the relationship between the labor force participation rate and the unemployment rate is estimated using regional data of Germany, France, and the United Kingdom derived from Eurostat, 1983–1993.     

Symptoms of Instability in Models of Spatial Dependence

In recent years, there has been a growing interest in the problems caused by the existence of instability in cross-sectional regressions. The results about local autocorrelation measures are part of this debate, as are the proposals concerning the concept of geographically weighted regressions. This article also deals with the problem of stability (or the lack thereof), but focusing the discussion on the supposition of constancy in the parameter of spatial dependence. In most cases, this assumption is treated, with the risks that this involves, as a maintained hypothesis, which should be ascertained before continuing with the modeling exercise. In the article, we present a simple heterogeneity test for this type of parameters, based on the Lagrange Multiplier principle. To illustrate its use, we take the distribution of per capita income among the European regions as our discussion case. According to our results, there are clear signs of structural breaks in the spatial distribution of this variable and the scale factor and the autocorrelation coefficient appear to be principal actors.     

Impacts of Multiple-Period Lags in Dynamic Logit Models

This paper will provide an introduction to a new field of research, viz. the sensitivity of the solution trajectory of a dynamic logit model (belonging to the class of discrete choice models) in the light of a multiperiod lag structure. It is well known from recent advances in the area of chaos and turbulence theory that the stability of a dynamic system is critically dependent on various factors, such as threshold values of parameters, initial conditions, and also the lag structure. This paper aims to identify the consequences of different lag structures in dynamic logit models (including also dynamic spatial interaction models). Various simulation experiments will be used to show that the onset of instability of the solution trajectory tends to decrease as the number of time lags increases (depending also on the growth rate of the system).     

Exploratory Models in a time of Big Data

This paper aims to trigger discourse about the emergence of a new type of social scientific model — Exploratory Models — which draw on Big Data, computer modeling and interdisciplinary research to tackle complex social scientific processes. First, we define Exploratory Models referring to Batty and Morgan and Morrison. We then present changes to the traditional modeling paradigm. We show how Exploratory Models circumvent challenges related to the idiosyncracy, self-reflexivity and acceleration of social phenomena, which limit predictive effectiveness of traditional models. We show that Exploratory Models are better equipped to tackle complex problems due to their capacity to process heterogeneous datasets. Having established that Exploratory Models are predominantly problem- and data-driven, we emphasize that scientific theory is indispensable to their progress. Finally, the development of an integrative platform is suggested as a way of maximizing the benefits of this approach. Discussion concludes by flagging areas for further research.     

Models and Metadata: The Ethics of Sharing Bioarchaeological 3D Models Online

Digital 3D modelling is increasingly common in archaeological recording, but building the models is only part of the story. Sharing and interacting with these digital representations is essential in fostering engagement and ensuring that research is relevant to the broader community. Projects and institutions understand that much of their communication and outreach now take place via digital platforms. However, archaeologists are faced with a variety of challenges when sharing 3D models of human remains online, including metadata curation, accessibility, openness, copyright as well as the ethical implications of sharing digital bioarchaeological data and long-term storage requirements. In this research, metadata from a collection of 3D models of human remains were extracted from SketchFab and analysed to understand how users share 3D models of human remains via online social platforms. The results were contrasted with a critical review of current ethical and technical guidelines, indicating potentially ethically compromising practices, particularly the lack of contextualising metadata for some models. This article proposes and discusses recommendations for developing more strategic approaches to the sharing of 3D data on human remains online, such as assessing and agreeing hosting, licensing and metadata management during project design. Frameworks are provided to support these approaches and make decisions on how to share data openly.