84 research outputs found
The Gemological Collection of Abraham Gottlob Werner
The gemological collection of Abraham Gottlob Werner contains 1374 sample numbers for 25 different minerals with 38 gemological varieties, including 15 newly added numbers of samples, which were not recorded in the original catalog of 1823. In total, 168 samples were recorded as lost by the later researchers, 4 samples were taken for the chain for the rector of the university, samples of 2 different numbers in the catalog were exchanged for cut stones, and 3 timesâ volume requisitions happened. A total of 256 sample numbers show discrepancies and therefore are not in accordance with the original record in the catalog.
In the collection, 6.8% of the numbers are rock sample with embedded crystals, 20.7% of the numbers are in the form of crystal, 30.6% of the numbers are fragments, 11.6% of the numbers are grains, and the remaining 711 samples are cut. Except for Esa. No. 644a containing four cushion cut samples, all faceted cuts were recorded in the original catalog of 1823. However, the brilliant, oval, step, emerald, scissor, and radiant cut forms were invented after the gemological collection of Werner, which means 189 samples do probably not belong to the original collection. They could be from another collection due to the requisitions, or the later researchers of the collection added or exchanged the samples with new ones.
The mineral names of the catalog from 1823 refer to Werner's mineral system, some of the mineral's names are not used anymore. With the development of mineralogy and gemology, the special names of the gemstones as varieties of minerals are gradually standardized. 51 samples are wrong identifications and 8 pieces of glass have been recognized.
The zircon samples of the collection provide a research resource for the study of metamictization. Both color and density of zircon could be an indicator of the metamictization degree. The metamictization has a significant influence on the gemological properties of zircon. The green tone and low density cannot be considered as an identifying characteristic of metamict zircon, although they are still a sign of metamictization.
Comparing six mineralogical or geological collections at Wernerâs time, the catalogs of five collections used his nomenclature of samples and only the catalog of the mineralogical collection of Adolf Traugott von Gersdorf is geographical. To his time the outstanding gemological collection of Abraham Gottlob Werner represented the broadest quantity of gemological varieties.
A modern gemological database of the collection has been founded, the meta-data provides an important base for further research and development.:Acknowledgements I
Abstract III
Table of Contexts IV
List of figures VI
List of tables VII
1. Introduction 1
1.1 Abraham Gottlob Werner 1
1.2 The mineral system of Werner 1
1.3 The gemological collection of Werner 3
2. Methods 6
2.1 Specific gravity (SG) measurements 6
2.1.1 Hydrostatic weighing 6
2.1.2 He-pycnometer 6
2.2 Color 6
2.2.1 Munsell color system 7
2.2.2 The CIE L*C*h color system 8
2.3 The optical measurements 9
2.3.1 Polariscope 9
2.3.2 Refractometer 10
2.3.3 Dichroscope 11
2.4 Ultraviolet (UV) fluorescence test 12
2.5 Raman spectroscopy 12
3. New model for the inventory of the gemological collection of Werner 13
4. Discussion 16
4.1 Cut cutting in the course of time 16
4.2 Classification of gemstones 24
4.2.1 Individual names of gemstones 25
4.2.2 Different identifications with the catalog of 1823 29
4.2.3 Imitation of gemstones 31
4.3 Raman spectrum study of zircons 32
4.4 Comparison of the outstanding Werner Collection with other collections in the second half of 18th century 39
4.4.1 The natural history collection of Linck family (1638-1807) 39
4.4.2 The Minerals cabinet of Eugen Pabst von Ohain (1718-1784) 40
4.4.3 The natural history collection of the University of Rostock 40
4.4.4 The mineralogical collection of Adolf Traugott von Gersdorf (1744-1807) 41
4.4.5 The mineralogical, geological and paleontological collection of Johann Wolfgang von Goethe (1749-1832) 42
4.4.6 Summary of the additional collections to Werner's time 43
5. Summary 44
Reference 46
Appendix A 59
Appendix B 63
Appendix C 6
An Investigation of the Managerial Use of Mobile Business Intelligence
As a new trend in business intelligence (BI), mobile BI has been gaining increasing adoption by managers. However, there is little academic research about the managerial use of mobile BI. Adopting the key constructs of Task-Technology Fit theory and the Unified Theory of Acceptance and Use of Technology as the theoretical lens, this exploratory study aims to deliver a preliminary understanding on why and how managers use mobile BI, from both the managersâ and the vendorâs perspectives. A case study was conducted with a large government authority whose mobile BI vendor is an industry leader worldwide. Semi-structured interviews were carried out with seven senior managers from this organization and the vendor. Through discussing the reasons why managers use mobile BI and their use patterns, a series of emergent propositions are drawn. The empirical results from this study not only contribute to this currently underexplored area of mobile BI, but also help enable the industry to make mobile BI products that better suit managersâ needs.
Available at: https://aisel.aisnet.org/pajais/vol10/iss3/4
Enhancing business intelligence traceability through an integrated metadata framework
The Business Intelligence (BI) system provides users with multi-dimensional information (so-called BI product) to support their decision-making. However, very often business users still could not fully understand the BI product, nor have a clear picture of the entire information manufacturing chain of the BI product. In response to this situation, this paper presents an integrated metadata framework (“BIP-Map”) to facilitate the traceability and accountability of a BI product following the design science research approach. Specifically, the salient modelling and management techniques from the business process modelling notation (BPMN), the information product map (IP-Map), and the metadata management are adapted to construct a three-layered integrated metadata framework enabling the business users to make timely and informed decisions. A BIP-Map informed prototype system has been developed in collaboration with online job recruitment firms. The authors conducted in-depth interviews with seven key BI stakeholders of the recruitment firms to evaluate the usefulness of the BIP-Map. It is envisaged that the metadata framework allows the technical personnel to understand the business processes that relate to certain information provided in the BI reports. Business users will also be able to gain insights into the logic behind any BI report.<br /
Knowledge Sources and IT Applications among SMEs: An Empirical Investigation in Saudi Arabia
The differences between large organizations and small and medium-sized enterprises (SMEs), in terms of their characteristics and challenges, may result in different practices toward many dimensions such as managing knowledge resources. Most KM research has been conducted in large organizations and in the western context. SMEs in developing countries such as Saudi Arabia have different situations and circumstances that need further investigation. The research aimed to investigate empirically, the sources from which Saudi Arabian SMEs acquire their knowledge to operate and compete, and to explore the extent to which information technology (IT) applications are used for the purpose of knowledge acquisition. Data based on surveying 143 SMEs and interviewing 17 SMEsâ managers, shows that both internal and external knowledge sources are important to SMEs with differences in terms of variety of external sources and limitations of internal sources. Among the external sources, customers and suppliers are the most significant knowledge sources for SMEs, while employees are the main internal knowledge sources that SMEs count on. The use of IT for such purposes is quite limited among SMEs except Internet and emails which are intensively used by many SMEs
A Study of the Contextual Factors Influencing Emergency Department Clinicianâs Diagnostic Test Ordering Decision Making
Australiaâs total number of pathology tests and imaging services covered by the Medicare Benefits Schedule has increased by over 50% in the last decade. Given that 20-25% of the common pathology tests were considered inappropriate nationwide, an increasing burden is being placed on the whole healthcare system by unnecessary diagnostic tests (UDTs). The objective of this exploratory study is to identify the contextual factors that could influence a clinicianâs diagnostic test ordering decision-making (DTODM) in an Emergency Department (ED). Semi-structured interviews were conducted with 19 ED clinicians. Four factors have been identified, including organizational context, patient/family preferences, resource availability, and influences by senior clinicians. The study offers new lenses in clinical reasoning for emergency medicine teaching and training through the eyes of ED clinicians. It also outlines an opportunity to introduce novel clinical decision support to assist with cliniciansâ test ordering without causing alert fatigue or bringing stress
A literature analysis of the use of Absorptive Capacity construct in IS research
Since the seminal inception of Absorptive Capacity (ACAP) by Cohen and Levinthal (1990), it has been adopted widely in information systems (IS) research. This paper analyzes the use of ACAP in IS research through a literature analysis of ACAP-related papers published in 52 reputable IS journals from 1990 to 2015. Drawing on a review of the evolution of ACAP, the analyses conducted include: (1) descriptive analysis of ACAP in IS papers; (2) domains of ACAP usage; (3) analysis of hypotheses and propositions to show how ACAP is being used to explain various organizational phenomena in IS research; and (4) analysis of the measures to provide insights into the operationalization of ACAP in IS research. Our findings suggest that while the majority of the research correctly conceptualizes ACAP as a capability, various misalignments between ACAP conceptualization, operationalization and measurement, and the level of analysis in the literature continue to do a disservice to the accumulated research in ACAP. The findings and recommendations should help IS researchers to conceptualize and operationalize ACAP appropriately
Improving business intelligence traceability and accountability: an integrated framework of BI product and metacontent map
An Exploratory Study on the Factors Influencing Managersâ Use of Mobile Tablets
Although mobile tablets such as iPads are being used by many managers, there has been a relative dearth of research on the managerial use of the mobile technology. This exploratory study aims to identify and understand the factors influencing the use of mobile tablets by managers. Semi-structured interviews were conducted with a panel of seven managers who had incorporated mobile tablets into their work routine. The study has found that the mobile tablet is a suitable device for managerial tasks due to these nine main factors: non-routineness, collaborative nature, time-critical, information-centric, mobility, user friendliness of the interface, reliability, connectivity, and autonomy. This exploratory study fills in the research gap and provides a basis to help managers establish a business case for or against mobile tablets adoption
Are business intelligence systems different to decision support systems and other business information systems?
A common view of information systems (IS) researchers is that business intelligence (BI) systems are essentially a type of decision support systems (DSS). This approach to knowledge implies that DSS theory can be transferred to BI systems in order to explain and predict their action. Further, some researchers feel that BI systems can also be adequately researched using general IS theory. This paper is the first from a project that is examining if BI systems have significant differences to operational IS and DSS. This first exploration is informed by a focus group of senior BI professionals. The study illuminates some differences between BI and other types of business IS and indicates that context could be significant for BI theorizing and that care is needed in transferring operational IS and DSS theory to BI systems research. In practice, these differences could be a source of project failure
Digital transformation in the construction industry: Applying a Knowledge Management System lens
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