Chalcolithic and Middle Bronze Age obsidian industries at Karmir Sar: A mountain view on the lithic economies of the Southern Caucasus

The high-altitude site of Karmir Sar is located around 2850 m a.s.l. on the southern slopes of Mt. Aragats (Armenia). Numerous stone structures (including vishaps, cromlechs, stone enclosures) are found all over the 40 ha-sized meadow, out of which three vishaps, four cromlechs and one circular stone structure have been investigated since 2012. According to 14C-dates, pottery and diagnostic lithic artefacts, human presence at Karmir Sar started as early as the Chalcolithic Period and continued (with gaps) until modern times; whereby the Middle Bronze Age (MBA) and the Medieval era represent the most intensive periods of occupation. This contribution presents primary data on the typology and technology of 1129 chipped lithic artefacts that have been excavated in four trenches at Karmir Sar (operations KS A, KS C, KS D, and KS E). This study of the lithic industries of Karmir Sar will be embedded within the framework of lithic economy, which considers lithic artefacts as part of a comprehensive interaction between lithic production and consumption. The lithic economy includes strategies of raw material procurement, blanks production and its transformation into tools, tool use, as well as the circulation of raw materials or products. Due to multiple use episodes and a general lack of clear stratigraphical horizons, the assemblages of Karmir Sar are not suitable to define the lithic industry for specific periods (such as the Chalcolithic or MBA periods). However, the data allows for general conclusions on lithic production and consumption at Karmir Sar, which appears to be quite similar during both periods. The Chalcolithic and MBA lithic economies at Karmir Sar are characterized by an ad hoc tool production environment, which well matches the needs of semi-mobile herder societies. The majority of raw materials appear to be procured from secondary source areas (such as riverbeds) which is indicated by a high ratio of battered and rolled surfaces. Tools are predominantly produced on-site, and according to daily demands by simple flake core technology. This allowed for a flexible, spontaneous blank and tool production without being dependent on specialized blade producers

Effect of Soil Sampling Density and Landscape Features on Soil Test Phosphorus

Organic and/or inorganic fertilizers are used to promote crop growth yet the rate of fertilizer application is often based on the nitrogen needs of the crop and not the phosphorus needs, especially when utilizing animal manures with low N-to-P ratios as compared to plant N:P uptake. Because of this, soil phosphorus levels in many areas of the world are in excess of crop needs. Excessive levels of phosphorus in water bodies such as streams and lakes can result in a condition known as eutrophication. With eutrophication, nutrients promote algal growth which in turn decreases dissolved oxygen levels in receiving water bodies. The issue of excessive nutrient inputs to waterbodies is of particular importance to Kentucky due to its large agricultural base and the Commonwealth’s link to hypoxia in the Gulf of Mexico. Nutrient management is one way to minimize the impacts of phosphorus on waterways; however, the success of nutrient management is dependent in part on soil sampling strategies. This study examined the effect of soil sampling density (15 × 15 m, 15 × 30 m, and 15 × 60 m) on Soil Test Phosphorus (STP) in three subplots. Results indicated that mean STP values for the subplots did not change with sampling densities; however, maximum STP levels displayed large variations. Depending on the sampling density used and the method of data aggregation (mean vs. maximum), recommended nutrient application rates varied from phosphorus-based to nitrogen-based. Also of importance was the recognition that maximum STP values were driven by a shallow limestone rock layer, which was not visible at the time of sampling. This limestone rock layer, and hence these highest STP values, were immediately upgradient of a sinkhole from which collected soil samples also exhibited higher STP values. When developing nutrient management plans, particularly in karst landscapes where the potential for groundwater contamination and hence surface water contamination is higher, additional consideration should be given to the influence of geologic materials on soil nutrient levels and greater sampling densities around preferential flow paths

Retrofitting Tractors with Rollover Protective Structures: Perspective of Equipment Dealers

This study was one of a cluster of studies that originated via requests for proposals from the NIOSH National Agricultural Tractor Safety Initiative. The present study design consisted of several steps: (1) formation of an advisory group, (2) development and testing of a standard paper self-responding survey instrument, (3) sample selection of farm equipment dealers, (4) administration of the survey, (5) assessment and analysis of the survey, and (6) in-person response panel of dealers (n = 80) to review results of the questionnaire for further definition and sharpening of the recommendations from the survey. A key finding is that most dealers do not currently sell or install ROPS retrofit kits. Barriers cited by dealers included (1) actual or perceived lack of farmer demand, (2) injury liability, (3) expensive freight for ordering ROPS, (4) lack of dealer awareness of the magnitude of deaths from tractor overturns and the high life-protective factor of ROPS, and (5) difficulty and incursion of non-recoverable expenses in locating and obtaining specific ROPS. Despite not currently selling or installing ROPS, dealers responded favorably about their future potential role in ROPS promotion and sales. Dealers were willing to further promote, sell, and install ROPS if there was demand from farmers. Recommendations include establishing a ROPS “clearing house” that dealers could contact to facilitate locating and obtaining ROPS orders from customers. Additional recommendations include education and social marketing targeting farm machinery dealers as well farmers, manufacturers, and policy makers

Creating a National Coalition to Address Tractor Overturn Fatalities.

Tractor overturns continue to be the leading cause of death on U.S. farms. While rollover protective structures (ROPS) are effective in preventing these fatalities, they are underutilized due to a number of barriers. Past programs in the U.S. and abroad have targeted this area of agricultural safety; however, a national program is not yet in place for U.S. farmers. This study seeks to build a national partnership to address tractor overturn fatalities by increasing the number of tractors with ROPS. A diverse, multisector steering committee has been organized and is working together using Whole System in a Room methods. This method brings together partners from nine stakeholder groups to identify and commit to a collaborative solution to the issue

Increases in ROPS Pricing from 2006-2012 and the Impact on ROPS Demand

In 2006, a social marketing campaign was developed to increase the installation of rollover protective structures (ROPS) on unprotected New York tractors. Using data gathered from the program\u27s hotline, the impact of price increases on farmers\u27 interest in ROPS is examined. Pricing data were obtained for all rigid ROPS kits commercially available in the U.S. since 2006. These data were stratified into two groups of ROPS suppliers: (1) tractor manufacturers that sell ROPS for their own tractors, referred to in this study as original equipment manufacturers (OEMs), and (2) aftermarket (AM) ROPS suppliers. The trend in price increases was contrasted with the change in the consumer price index (CPI), the probability of retrofitting within quintiles of cost was estimated, and the increase in ROPS prices over time was plotted The average price increase for a ROPS kit (excluding shipping and installation) over the six years of the study was 23.3% for OEM versus 60.5% for AM (p \u3c 0.0001). Out-of-pocket expenses held steady for OEM versus a six-year increase of $203 for AM (p = 0.098). The probability of a farmer retrofitting dropped monotonically from 66.9% in the lowest ROPS cost quintile to 23% in the highest. If these trends continue, the proportion of inquiries resulting in a ROPS retrofit will fall below 20% by 2020 for AM ROPS. Based on other trends identified in the literature, it is reasonable to assume that decreases in ROPS installation are likely to affect the tractor owners who are most likely to need these safety devices

Burying power: New insights into incipient leadership in the Late Pre-Pottery Neolithic from an outstanding burial at Baʻja, southern Jordan

In 2016, an extraordinary burial of a young adult individual was discovered at the Late Pre-Pottery Neolithic B (LPPNB, 7,500–6,900 BCE) settlement of Baʻja in southern Jordan. This burial has exceptional grave goods and an elaborate grave construction. It suggests discussing anew reconstructions of early Neolithic social structures. In this article, we will summarize former theories on the emergence of leadership and hierarchies and present a multivariate model according to which anthropological and archaeological data of the burial will be analyzed. In conclusion, we surmise that early Neolithic hierarchization in southern Jordan was based on corporate pathways to power rather than self-interested aggrandizers. However, some aspects of the burial point to regional exchange networks of prestige goods, a trait considered characteristic of network based leadership. In line with anthropological and sociological research, we argue that pathways to power should be considered as relational processes that can be understood only when comparing traits of the outstanding person to her/his social environment