新疆多岗墓地出土人骨的碳氮稳定同位素分析

拜城多岗墓地是新疆西部发现的墓葬数量较多的墓葬群之一,墓葬情况复杂,葬俗葬式多样,是早期铁器时代的研究资料。本文对于采集到的该墓地41具人骨进行碳氮稳定同位素分析,探讨多岗居民的饮食状况;并结合墓葬类型、随葬品种类,男女性别以及考古学分期等对不同条件人们的食物差别进行考察,为该区域早期铁器时代居民的饮食结构研究提供依据。分析结果显示,多岗居民δ15N平均值为12.56‰,表明食物中有较多的肉类;而δ13C分析平均值为-14.77‰,相应植物类食物中C4类植物为40%左右。参考周边遗址的出土遗存,其C4类植物应为粟或黍。     

AGGLOMERATION ECONOMIES: MICRODATA PANEL ESTIMATES FROM CANADIAN MANUFACTURING*

ABSTRACT This paper identifies the main sources of urban increasing returns, after Marshall. The geographical distance across which externalities flow is also examined. We bring to bear on these questions plant‐level data organized in the form of a panel across the years 1989 and 1999. Plant‐level production functions are estimated across the Canadian manufacturing sector as a whole and for five broad industry groups, each characterized by the nature of its output. The panel data overcome selection bias resulting from unobserved plant‐level heterogeneity that is constant over time. A related set of estimates using instrumental variables allay persistent concerns with endogeneity. Results provide strong support for Marshall's claims about the importance of buyer‐supplier networks, labor market matching and spillovers. We show that spillovers enhance plant productivity within industries rather than between them and that these spillovers are highly localized.     

SUPPLY ARMS AND OPTIMAL SPATIAL STRUCTURE*

ABSTRACT. A multi-plant producer has sole access to a region, and each of the plants processes a raw material which is drawn from its own exclusive supply area. Under these conditions what spatial structure of production (in terms of plant scale, plant frequency, supply-area size and supply-area shape) will enable region-wide or multi-plant profit to be maximized? The form of this optimal structure is shown to vary with prevailing level of price, which is exogenously determined.     

Experimental assessment of maize phytolith and starch taphonomy in carbonized cooking residues

Many taphonomic studies of plant microfossils, specifically phytoliths and starch, are concerned with post-depositional movement, contamination, and morphological changes due to environmental fluctuations or plant processing. Additionally, the identification of phytoliths and starches archaeologically are based on their presence or absence. This paper examines whether it is possible to identify maize (Zea mays ssp. mays) phytolith and starch abundance associated with different processing behaviors as replicated through experimentally produced cooking residues. If successful, identification of likely associated processing and taphonomy of these microfossils will allow for a more refined interpretation of plant use as it relates to timing and plant form and processing.     

What goes in does not always come out: The impact of the ruminant digestive system of sheep on plant material,and its importance for the interpretation of dung-derived archaeobotanical assemblages

Abstract

On archaeological sites where livestock dung was a major fuel source, plant material that survives digestion intact may well be preserved in the remnants of dung-fuelled fires. Preserved plant remains which were derived from dung relate to the diet of animals, and thus provide a way of investigating the agro-pastoral economies of the past. In order to improve our understanding of the taphonomic processes to which plant material is exposed to during digestion, we applied archaeobotanical methods to the analysis of dung from sheep fed a known diet of cereal and wild plant material. Two clear patterns emerge from these investigations. First, cereal material (grain or chaff) survives digestion poorly and was rarely found in the dung analysed. Second, large proportions of seeds of various wild species survive digestion in an identifiable form, probably due to their small size and/or protective coating. These findings are crucial for reliable interpretation of dung-derived plant material in archaeological settings.     

Land Evaluation and Regional Pricing in the Soviet Union

The author examines the use of the Lorenz curve and the Florence method for measuring the degree of spatial concentration of industry in a given area, and then develops an index of his own, based on ratio of the industrial output, value of plant, and industrial employment per unit area in a region to the industrial output, value of plant, and industrial employment per unit area in the country (or larger regional entity) as a whole. Findings for the major economic regions and middle-level regions (oblasts, krays, ASSRs) of the RSFSR are shown in the form of tables, graphs and map. A pronounced spread in levels of concentration is found between the European and Asian portions of the RSFSR, with concentration levels in the Central Russian region (at one extreme) and the Soviet Far East (at the other extreme) differing by a factor of 56.     

Assigning Context to Artifacts in Burned-Rock Middens

Abstract

Accumulations office-cracked rock and carbon-stained sediment in pits mark locations of past cooking and heating facilities around the world. While the specific functions of these features may vary, the use of stones as heating elements in earth ovens is common. After repeated use, debris in the form of fire-cracked stones, charcoal, ash, sediment, carbonized plant fragments, and other materials accumulates to form low mounds known in the U.S. Southern Plains and the Southwest as burned-rock middens. The middens may include artifacts some introduced inadvertently with sediment used to form an earthen cap to seal the pit oven. The sediment and included artifacts for this insulating cap may be borrowed from other parts of the site. After the cooking is complete, the earthen cap is peeled open and all materials redistributed by trampling and slope wash. Artifacts and other materials in burned-rock middens, therefore, may not represent discrete events or periods directly associated with use of the ovens.     

Plant Communities and the Dynamics of Natural Systems

Plant communities are viewed as a factor of both stabilization and transformation of natural systems. Two categories of subdivisions of the plant cover are distinguished: phytocenomers, which are the object of vegetation classification, and phytocenochores, which are units of geobotanic regionalization. The two categories are compared at the planetary, regional, and topologic levels. A plant association is viewed as a dynamic system building up through a series of variable structures to the ultimate indigenous, invariant, climax structure. The evolution of an association is depicted in the form of a graph, in which the vertices designate the various states leading to the climax association, and the edges the probable transitions from one state to another. The graph is plotted on a system of coordinates reflecting both the time period of these transformations and their effect (in terms of increases or decreases of the total plant mass). The technique is illustrated with two specific associations: the forb-tyrsa association of the Transbaykal steppe, and the fir, low-grass, green-moss association of the southern tayga (boreal forest).     

邓小平企业管理实践与理念的历史考察

邓小平是我们党第一、二代中央领导集体中考察企业次数最多的领导人之一.其企业管理思想以他两个时期的工厂劳动实践为基础:法国勤工俭学使其在青年时期就接触到现代企业管理,江西新建县拖拉机厂劳动实践对其企业管理思想形成产生直接影响.邓小平重视企业调研,先后考察国内外企业200多次,改革开放前主要考察北方国有制企业,改革开放后主要考察南方多元制企业,在南方企业考察中提出了"三个面向"式、"一主多元"式、"市场经济"式企业管理新理念,对于当代中国企业的发展具有重要指导意义.     

Tracing sickle blade levels of wear and discard patterns: a new sickle gloss quantification method

Although sickle blades gloss is known to form during the harvest, which is a dynamic process and although it is known to be a type of wear which is the outcome of the repetitive encounters between the sickle blades working edges and plant stems; there is no common way to quantify its intensity. Since there is no consensus over a specific scale that will enable the estimation of the amount of wear, based on the quantification of gloss brightness intensity. In this paper we propose a new measurement system which is based on the projection of laser (He–Ne) beam on glossed sickle blades and an analysis of the reflected images. The results form a relative scale from which it is possible to infer on the sickle blades level of wear, and to create discard models.     

Transportation Networks and the Location of Human Activities

The impact of transportation networks on the location of human activities is a surprisingly neglected topic in economic geography. Using the simple plant location problem, this paper investigates such an impact in the case of a few idealized networks. It is seen that a grid network tends to foster a dispersed pattern of activities, while the center of a radial network acts as an attractor. The case of two economies characterized by different network configurations that form a custom union is then analyzed. It is shown that the structural properties of the networks still hold, though some locations are pulled toward the common border. This suggests that no such relocation should be expected within the European Union if the state members endorse similar fiscal and social policies after the formation of the single market.     

PRICE UNCERTAINTY,FACTOR SUBSTITUTION,AND THE LOCATIONAL BIAS OF BUSINESS TAXES*

Consideration of the integrated production-location problem is extended to include several types of business taxes. Many of these taxes are technologically and spatially neutral under certainty, but are shown to be nonneutral when factor prices are stochastic and the firm is risk averse, even when the tax is spatially uniform. Consequently, even a nationally uniform tax can have regional biases and can encourage migration of plants. When factor prices are uncertain, the effects of taxes on output rates, input ratios, and plant location vary with the form of the tax imposed as well as the amount to be paid. Income taxes involve the taxing authority in sharing the risk with the firm and are shown to promote risk taking by the firm and induce the expansion of output. Locational incentives which are mutually beneficial to firms and the government are presented.     

The composition of the soda-rich and mixed alkali plant ashes used in the production of glass

Soda-rich plant ashes have been used in the Near East and Egypt in the production of glass and faience from the 4th millennium BC onwards, and mixed alkali plant ashes have been similarly used in western Europe during the 2nd and first half of the 1st millennia BC. In the production of these ashes, the plants of interest are salt resistant, halophytic plants of the Chenopodiaceae family, growing in coastal, salt marsh and desert regions. A primary criterion in selecting ashes for glass and faience production is that the alkalis are predominantly in the form of carbonates, bicarbonates and hydroxides rather than either chlorides or sulphates. In the current paper, previously published data for such ashes are brought together and re-assessed, and new analytical data are presented for ashes produced from plants collected in Egypt, Greece and the UK. For the ashes produced from Salsola kali plants collected from Greece and the UK, the soda to potash ratios (0.3–1.8) do not show any systematic differences between the regions in which the plant was growing, but instead reflect the fact that this species favours the accumulation of K⁺ over Na⁺ ions. Further, the results suggest that S. kali could have been the source of the mixed alkali ashes used in western Europe, if the ashes had first been treated in some way in order to reduce their lime-plus-magnesia contents.     

Regional Planning Problems in the Soviet Far East

A variety of approaches are being recommended in regional plans for future settlements patterns in the Soviet Far East. In Magadan Oblast, the present scattered pattern of small populated places is to be superseded by greater concentration of urban population in a set of subregional service centers. In Khabarovsk Kray, different approaches are being recommended for the future development of the Khabarovsk and Komsomol'sk areas. Because limitation of the future growth of Khabarovsk is desirable, new industrial establishments are to be located in the future in nearby small towns and urban settlements of the Khabarovsk industrial district. In the Komsomol'sk area, satellite towns are to be significantly developed, giving rise to a grouped form of urban settlement, including the tin-mining center of Solnechnyy and the paper and chemical center of Amursk. In Amur Oblast, consideration is being given to the development of an iron and steel plant in the Svobodnyy area, giving rise to a city of up to 200,000 population.     

Geographical Aspects of Biological Productivity

Annual plant production and total plant mass are calculated for 106 types of soil and plant formations of the world, grouped in turn by major thermal belts and bioclimatic regions (humid, semiarid, arid) within these thermal belts. Aggregate magnitudes of annual growth and total plant mass by thermal belts and their bioclimatic regions follow a sequence of alternating high values in humid regions and low values in arid regions that bears a similarity to the periodic law of geographical zonality. Maximum plant production is associated with the Tropical belt, where combinations of heat and moisture favor maximum intensity of the physical-geographic process. A related paper, by Bazilevich and Rodin, appeared in Soviet Geography, January 1971.     

Impacts of an Iron and Steel Plant on Residential Property Values

The hedonic price method is used to estimate the relationship between residential property values and proximity to an integrated iron and steel plant located in the outskirts of Gijón, a city in the north of Spain. Empirical results suggest that there is a statistically significant negative relationship between housing values and the distance from the iron and steel plant. From a partial equilibrium analysis, increasing the distance from the plant, decreasing plant production or dismantling the plant would lead to an increase in the value of the housing units. The results show as well that the housing units located nearest to the factory would be the most favoured by applying the aforementioned changes.     

MACROBOTANICAL ANALYSIS OF TWO HOPEWELL MOUND SAMPLES FROM THE MANN SITE (12PO2) IN INDIANA

Abstract

The Mann site (12PO2), most noted for its large Hopewellian mound complex, is a little studied but significant archaeological site in southwestern Indiana. Non-mound habitation areas at both the Mann and nearby Mann phase Grabert site were the sole source of archaeobotanical information for these sites prior to the current macrobotanical analysis of two newly available and fairly large (55–60 g of charred material each) samples collected from Mann site mound pit features. Analysis of the macrobotanical material from these pits, in the context of what is already known from both the Mann and Grabert sites, provides additional evidence that plant resources were being used in the Mann phase subsistence system consistent with interregional Hopewellian influences. Data indicate that the inhabitants were using some form of seed storage and may have been participating in non-burial-related ceremonial feasting.     

Plant-food preparation area on an Upper Paleolithic brush hut floor at Ohalo II,Israel

While a division of domestic space into separate sectors dedicated to different activities has been suggested for a number of Upper Paleolithic hunter-gatherer sites, it has never been demonstrated based on plant remains from this period. Moreover, due to the usual scarcity of plant macrofossils in archaeological deposits, only animal food preparation activities associated with hearths have been reported in the literature on Near Eastern prehistory. Ohalo II (Israel) is the first Upper Paleolithic site where such a patterned use of interior space and plant processing are evidenced by the distribution of plant remains on a sealed floor of a brush hut. This paper describes and interprets the distribution of almost 60,000 identified seeds and other plant remains on that floor, proposing a reconstruction of three activity areas in the interior of the 12-m² hut: processing of food centered on a grinding stone; a flint knapping area; and an access area in between. Finally, it is suggested that these activity areas might represent male-female division of labor.     

Considerations on the provenance determination of plant ash glasses using strontium isotopes

Strontium isotopic analysis has been proposed as a suitable method to determine the primary production location of ancient plant ash glasses. The technique is based upon the assumption that Sr enters this glass type with the plant ash used as a flux material, and that the ⁸⁷Sr/⁸⁶Sr ratio of the resulting glass reflects the geological provenance of that flux. In such case, the bulk Sr isotopic composition of the bedrock should be inherited unchanged in the plants growing on that bedrock. Different types of plant ash glasses have been shown to have widely differing ⁸⁷Sr/⁸⁶Sr compositions. In this study, the ⁸⁷Sr/⁸⁶Sr composition of several plant species growing on different bedrock types is measured, and compared to the bulk Sr isotopic composition and petrology of that bedrock. The paper shows that the ⁸⁷Sr/⁸⁶Sr ratio of these plants is a function not only, or even mostly, of the local geology, but also of the Sr isotopic composition of the total water consumed by that plant. This is highly likely to be both plant species dependent and dependent on the small-scale hydrology of the area immediately surrounding the plant. In this way, no definite relation between the isotopic composition of a geological outcrop and the plants growing on this bedrock can be inferred. Hence, the isotopic composition of a plant ash made from such plants is uncertain and moreover species dependent. Though groups of plant ash glasses can certainly be compared in time and space using Sr isotopes, it may prove difficult to ascertain a plant ash glass type to a specific geographical-geological region.