Integrasi Aspek Resiko Pada Proses Pengelolaan Suku Cadang Di Pltd Bitung

The purpose of this research is to integrate aspects of risk in the process of managing spare parts in PLTD Bitung. To achieve these objectives, this research is using AHP methods (Analytical Hierarchy Proses). Froms the result of the AHP the weight of the criteria are as follows : availability of goods (0,9542) delivery time (0,9986). Wear rate (1.3293), risk (1,1439). From AHP methods, priority supply of spareparts wish regards to all criteria, the highest priority given to nidlle bearing parts (1,4028)

Generalisation and specialisation in hoverfly (Syrphidae) grassland pollen transport networks revealed by DNA metabarcoding

1. Pollination by insects is a key ecosystem service, and important to wider ecosystem function. Most species-level pollination networks studied have a generalised structure, with plants having several potential pollinators, and pollinators in turn visiting a number of different plant species. This is in apparent contrast to a plant?s need for efficient conspecific pollen transfer. 2. The aim of this study was to investigate the structure of pollen transport networks at three levels of biological hierarchy: community, species, and individual. We did this using hoverflies in the genus Eristalis, a key group of non-Hymenopteran pollinators. 3. We constructed pollen transport networks using DNA metabarcoding to identify pollen. We captured hoverflies in conservation grasslands in west Wales, UK, removed external pollen loads, sequenced the pollen DNA on the Illumina MiSeq platform using the standard plant barcode rbcL, and matched sequences using a pre-existing plant DNA barcode reference library. 4. We found that Eristalis hoverflies transport pollen from 65 plant taxa, more than previously appreciated. Networks were generalised at the site and species level, suggesting some degree of functional redundancy, and were more generalised in late summer compared to early summer. In contrast, pollen transport at the individual level showed some degree of specialisation. Hoverflies defined as ?single-plant visitors? varied from 40% of those captured in early summer to 24% in late summer. Individual hoverflies became more generalised in late summer, possibly in response to an increase in floral resources. Rubus fruticosus agg. and Succisa pratensis were key plant species for hoverflies at our sites 5. Our results contribute to resolving the apparent paradox of how generalised pollinator networks can provide efficient pollination to plant species. Generalised hoverfly pollen transport networks may result from a varied range of short-term specialised feeding bouts by individual insects. The generalisation and functional redundancy of Eristalis pollen transport networks may increase the stability of the pollination service they deliver.publishersversionPeer reviewe

Floral resource partitioning by individuals within generalised hoverfly pollination networks revealed by DNA metabarcoding

Pollination is a key ecosystem service for agriculture and wider ecosystem function. However, most pollination studies focus on Hymenoptera, with hoverflies (Syrphidae) frequently treated as a single functional group. We tested this assumption by investigating pollen carried by eleven species of hoverfly in five genera, Cheilosia, Eristalis, Rhingia, Sericomyia and Volucella, using DNA metabarcoding. Hoverflies carried pollen from 59 plant taxa, suggesting they visit a wider number of plant species than previously appreciated. Most pollen recorded came from plant taxa frequently found at our study sites, predominantly Apiaceae, Cardueae, Calluna vulgaris, Rubus fruticosus agg., and Succisa pratensis, with hoverflies transporting pollen from 40% of entomophilous plant species present. Overall pollen transport network structures were generalised, similar to other pollination networks elsewhere. All hoverfly species were also generalised with few exclusive plant/hoverfly interactions. However, using the Jaccard Index, we found significant differences in the relative composition of pollen loads between hoverfly genera, except for Volucella, demonstrating some degree of functional complementarity. Eristalis and Sericomyia species had significant differences in relative pollen load composition compared to congeners. Our results demonstrate the range of pollens transported by hoverflies and the potential pollination function undertaken within this ecologically and morphologically diverse guild

Market innovation as framing, productive friction and bricolage: an exploration of the personal data market

This paper explores the possibilities offered by recent Science and Technology Studies (STS) research on markets for engaging with market innovation. Although there exist few reflections on how innovation happens in markets, market innovation has not been singularly theorized in STS-inspired market studies. In this paper, we explore the potential analytic utility of different sets of ideas in the field of market studies, such as ‘framing’ [Callon, M. (1998) ‘Introduction: the embeddedness of economic markets in economics’, in The Laws of Markets, ed. M. Callon, Blackwell, Oxford, pp. 1–57; Callon, M. (2007) ‘An essay on the growing contribution of economic markets to the proliferation of the social’, Theory, Culture & Society, vol. 24, no. 7–8, pp. 136–163], ‘productive friction’ [Stark, D. (2009) The Sense of Dissonance: Accounts of Worth in Economic Life, Princeton University Press, Princeton, NJ] and ‘bricolage’ [MacKenzie, D. & Pardo-Guerra, J. P. (2014) ‘Insurgent capitalism: Island, bricolage and the re-making of finance’, Economy and Society, vol. 43, no. 2, pp. 153–182]. Drawing on our research into the online personal data industry and start-ups developing personal data control products, we put together five sensibilities that we think are of use for broader considerations of market innovation

Visual accountability

In this article, we draw attention to the way in which accountability relations are manifested in and through the use of visual evidence. Through their status as representations of what is the case, evidentiary visual images frequently provide a basis for giving accounts and for raising questions regarding distributions of accountability. At the same time, and in a similar manner to numbers (Munro, 2001), such images become part of organized relations of accountability that can be noted as having ‘hailing’ effects: they call for and prefigure a certain kind of response and dispersing of responsibility. Here we examine how the use of visual evidence is embedded in discursive and material practices that variously create or inhibit possibilities for questioning, or interrogating, this evidence. Drawing on elements of ethnomethodology and actor-network theory, we use ‘interrogation’ as the basis for depicting a three-part analytical schema focused on opening up, closing down and temporality to explore how visual accountability is worked out in surveillance, traffic management and breast screening images

Boundary work: An interpretive ethnographic perspective on negotiating and leveraging cross-cultural identity

The complexity of global organizations highlights the importance of members’ ability to span diverse boundaries that may be defined by organization structures, national borders, and/or a variety of cultures associated with organization, nation-based societal and work cultures, industries, and/or professions. Based on ethnographic research in a Japan–US binational firm, the paper describes and analyzes the boundary role performance of the firm\u27s Japanese members. It contributes toward theory on boundary spanning by introducing a “cultural identity negotiation” conceptual framework. We show boundary spanning as a process shaped through the interplay of the contextual issues that make a boundary problematic; an individual\u27s multiple repertoires of cultural knowledge; and the individual boundary spanner\u27s “negotiation”, through interaction with others, of his/her cultural identities – the sense of “who I am” as a cultural being that is fundamental to an individual\u27s self-concept. At the same time, we make transparent the epistemological and methodological foundations of an interpretive ethnographic approach, demonstrating its value for understanding complex organizational processes. Research findings have practical implications for the selection and training of an organization\u27s employees, particularly of persons who may be considered “bicultural”

Phylogeny and Biogeography of the Carnivorous Plant Family Sarraceniaceae

The carnivorous plant family Sarraceniaceae comprises three genera of wetland-inhabiting pitcher plants: Darlingtonia in the northwestern United States, Sarracenia in eastern North America, and Heliamphora in northern South America. Hypotheses concerning the biogeographic history leading to this unusual disjunct distribution are controversial, in part because genus- and species-level phylogenies have not been clearly resolved. Here, we present a robust, species-rich phylogeny of Sarraceniaceae based on seven mitochondrial, nuclear, and plastid loci, which we use to illuminate this family's phylogenetic and biogeographic history. The family and genera are monophyletic: Darlingtonia is sister to a clade consisting of Heliamphora+Sarracenia. Within Sarracenia, two clades were strongly supported: one consisting of S. purpurea, its subspecies, and S. rosea; the other consisting of nine species endemic to the southeastern United States. Divergence time estimates revealed that stem group Sarraceniaceae likely originated in South America 44–53 million years ago (Mya) (highest posterior density [HPD] estimate = 47 Mya). By 25–44 (HPD = 35) Mya, crown-group Sarraceniaceae appears to have been widespread across North and South America, and Darlingtonia (western North America) had diverged from Heliamphora+Sarracenia (eastern North America+South America). This disjunction and apparent range contraction is consistent with late Eocene cooling and aridification, which may have severed the continuity of Sarraceniaceae across much of North America. Sarracenia and Heliamphora subsequently diverged in the late Oligocene, 14–32 (HPD = 23) Mya, perhaps when direct overland continuity between North and South America became reduced. Initial diversification of South American Heliamphora began at least 8 Mya, but diversification of Sarracenia was more recent (2–7, HPD = 4 Mya); the bulk of southeastern United States Sarracenia originated co-incident with Pleistocene glaciation, <3 Mya. Overall, these results suggest climatic change at different temporal and spatial scales in part shaped the distribution and diversity of this carnivorous plant clade

The Developments in Ethnographic Studies of Organizing: Towards Objects of Ignorance and Objects of Concern

In this introduction to the Special Issue, we review the rich tradition of ethnographic studies in organisation studies and critically examine the place of ethnography in organisation studies as practised in schools of business and management. Drawing on the findings of the articles published here, we reflect on the need for a significant extension of the content and syllabus of our discipline to include what we call objects of concern and objects of ignorance. The articles we publish show that decision makers in organizations are not always humans, and nor can we assume the human and its groups monopolise the capacity for agency in organisation. Where we still labour in organisation theory with dualisms such as structure or agent, or subject and object, these articles trace objects and their relations which point to new forms of non-human co-ordination and agency. The organisational realities to which these objects give rise demand careful methodological enquiry, and we show that recent experiments in a genre we call ‘post-reflexive ethnography’ are likely to prove helpful for developing ethnographic enquiry in contemporary organisation