4581   Recommendation networks and the long tail of electronic commerce Recommendation networks and the long tail of electronic commerce    2012 It has been conjectured that the peer-based recommendations associated with electronic commerce lead to a redistribution of demand from popular products or "blockbusters" to less popular or "niche" products, and that electronic markets will therefore be characterized by a "long tail" of demand and revenue. We test this conjecture using the revenue distributions of books in over 200 distinct categories on Amazon.com and detailed daily snapshots of co-purchase recommendation networks in which the ... 查看全文

4582   Managing demand to optimize production costs Managing demand to optimize production costs    2003 Manufacturing firms often have to deal with a demand pattern that is characterized by fluctuations. Demand fluctuations may be caused by factors such as seasonalities, the dynamics of a particular industrial sector or of the entire economy, change in demand levels over a short product life cycle, promotions carried out by marketing, or by contracts between an organization and its customers. Typically, a firm would be able to exercise a high degree of control over its choice of contracts and over... 查看全文

4583   On the drivers of eco-innovations: Empirical evidence from the UK On the drivers of eco-innovations: Empirical evidence from the UK    2012 The environmental economics literature emphasises the key role that environmental regulations play in stimulating eco-innovations. Innovation literature, on the other hand, underlines other important determinants of eco-innovations, mainly the supply-side factors such as firms' organisational capabilities and demand-side mechanisms, such as customer requirements and societal requirements on corporate social responsibility (CSR). This paper brings together the views of these different disciplines... 查看全文

4584   Optimization of rotor speed based on stretching, efficiency, and viscous heating in nonintermeshing internal batch mixer: Simulation and experimental verification Optimization of rotor speed based on stretching, efficiency, and viscous heating in nonintermeshing internal batch mixer: Simulation and experimental verification Alice Robson, Keith Beven and Colin Neal    2012 Optimization of rotor speed based on stretching, efficiency, and viscous heating in nonintermeshing internal batch mixer has been investigated using polymer melt. A practical optimization technique was followed for optimization. Four different rotor speeds were used and characterized numerically with viscous dissipation and stretching. The heat distribution between rotor edge and mixer wall was calculated. Stretching experienced by the fluid was analyzed and the result was verified experimentall... 查看全文

4585   Foresight on environmental technologies: Options for the prioritisation of future research funding - Lessons learned from the project "Roadmap Environmental Technologies 2020+" Foresight on environmental technologies: Options for the prioritisation of future research funding - Lessons learned from the project "Roadmap Environmental Technologies 2020+"    2012 There is broad consensus that tackling the increasing global environmental problems will require the support of technology. Consequently, environmental technologies are regarded as one of the fastest growing global markets. Owing to the wide range of technologies available that can contribute to progress in this field, there is a high demand for prospective research setting priorities in a transparent way. Against this background, the presented study aimed at supporting the process of identifyin... 查看全文

4586   Flight delays, capacity investment and social welfare under air transport supply-demand equilibrium Flight delays, capacity investment and social welfare under air transport supply-demand equilibrium    2012 This paper analyzes benefits from aviation infrastructure investment under competitive supply-demand equilibrium. The analysis recognizes that, in the air transportation system where economies of density is an inherent characteristic, capacity change would trigger a complicated set of adjustment of and interplay among passenger demand, air fare, flight frequency, aircraft size, and flight delays, leading to an equilibrium shift. An analytical model that incorporates these elements is developed. ... 查看全文

4587   Research on the role of urban rail transit in promoting economic development Research on the role of urban rail transit in promoting economic development    2011 Urban rail transit becomes the important mean for developing urban economy, improving industrial structure and raising citizens' living standard for its great social and economic effects. With the growth of economy, its role of boosting domestic demand and driving economic growth has been more obvious. And it will become the major impetus for fueling green GDP growth and promoting urban sustainable development. This paper, from the urban sustainable development point of view, analyzes the social... 查看全文

4588   The art of managing conflicting institutional logics: The case of social integration enterprises The art of managing conflicting institutional logics: The case of social integration enterprises    2010 This paper explores organizational responses to conflicting institutional demands. An inductive comparative case study of four social enterprises embedded in competing 'social welfare' and 'commercial' logics suggests that when facing these competing organizational templates, organizations attempt at striking a balance at the organizational level by adopting a combination of 'pure' practices from each logic rather than by compromising on each practice. Data shows that organizations emanating fro... 查看全文

4589   User behavior. analysis in Social TV systems User behavior. analysis in Social TV systems    2012 We have constructed a Social TV system called teleda on the cloud, and conducted a trial with user participation. Teleda combines video-on-demand (VOD) television programs with a social networking service (SNS) that enables users to share program reviews and comments. This trial revealed that user viewing behaviors when combining VOD and SNS. Based on detailed analysis of trial results, we here report on how viewing behavior. in Social TV differs from conventional broadcast viewing particularly ... 查看全文

4590   Construction of an electricity demand distribution model based on the analysis of panel data and socio economic structural change Construction of an electricity demand distribution model based on the analysis of panel data and socio economic structural change    1991 Estimation of the geographical distribution of electricity demand is a pre-requisite for the various investigations with regard to the planning of dispersed power generation and storage devices such as solar and fuel cells, gas engines and secondary batteries. This paper describes a model for electricity demand which is constructed for estimating the demand for 40 partitioned areas in the Kansai Region of Japan. The demand model is based on the results of a detailed statistical analysis of the p... 查看全文

4591   On-demand mobile CRM applications for social marketing - Business and technology perspective On-demand mobile CRM applications for social marketing - Business and technology perspective    2008 Solutions for Customer Relationship Management (CRM) tend to evolve from the traditional passive recording of transactions between the Company and the Customer to agile optimized strategies for interaction and cooperation with the Customer. Despite considerable industry and research interest to the new "social" CRM 2.0, the gap between the vision and the reality is still quite large. Use of handheld devices deserves special attention in this respect. Although it can boost sales, customer satisfa... 查看全文

4592   The Alluvial Geoarchaeology of the Sanyangzhuang Site on the Yellow River Floodplain, Henan Province, China The Alluvial Geoarchaeology of the Sanyangzhuang Site on the Yellow River Floodplain, Henan Province, China Lien Poelmans, Anton Van Rompaey, Victor Ntegeka and Patrick Willems    2012 The Sanyangzhuang site, Henan Province, China, has a 12-m-deep stratigraphic sequence with remains from the Tang (A.D. 618–907), late Western Han (ca. 140 B.C.–A.D. 23), Warring States (475–221 B.C.), Late Neolithic or Early Bronze Age (ca. 5000–1500 B.C.), Middle Holocene, and Early Holocene times. All of the paleosols are deeply buried. We investigate four issues relevant to the archaeology of the lower Yellow River Valley. First, we confirm that the Yellow River flowed... 查看全文

4593   Fabrication of Superfine Leucite-Reinforced Dental Material by Hydrothermal Precursor and Low-Temperature Frit Fabrication of Superfine Leucite-Reinforced Dental Material by Hydrothermal Precursor and Low-Temperature Frit Chrisostomos Prodromou, Peter W. Piper and Laurence H. Pearl    2011 A superfine leucite-reinforced dental material was prepared by heat-treating the mixture of hydrothermally derived leucite precursor and low-temperature frit at 750°C. XRD and DSC results indicate that the low-temperature frit can lower leucite crystallization temperature from 1027°C to 694°C. High-temperature X-ray diffraction of the dental porcelain demonstrates that there exists a temperature range in which leucite crystals are in the equilibrium of forming, ripening, and dissolvi... 查看全文

4594   Conditioning of bovine muscle I.—Composition of the proteins of the myofibril Conditioning of bovine muscle I.—Composition of the proteins of the myofibril Sasiwimon Buddhiranon, Namil Kim and Thein Kyu    2006 By selective extraction, precipitation and separation on diethylaminoethyl cellulose the proteins of the myofibril have been divided into a number of fractions which, quantitatively, do not vary in the longissimus dorsi muscles of six different beef animals. The fractions have been analysed by starch-gel electrophoresis and some have been found to consist of almost pure proteins while others are complexes. About 80–85 % of the myofibrillar protein could be extracted of which 47% was myosin... 查看全文

4595   Fractionation of Deoxyribonucleoprotein† Fractionation of Deoxyribonucleoprotein† Sasiwimon Buddhiranon, Namil Kim and Thein Kyu    2010 查看全文

4596   Fourth International Conference on NUMERICAL METHODS IN FRACTURE MECHANICS Fourth International Conference on NUMERICAL METHODS IN FRACTURE MECHANICS Sasiwimon Buddhiranon, Namil Kim and Thein Kyu    2007 查看全文

4597   THE SLR FACTOR (RHIZOPTERIN) AND FORMYL FOLIC ACID THE SLR FACTOR (RHIZOPTERIN) AND FORMYL FOLIC ACID Sasiwimon Buddhiranon, Namil Kim and Thein Kyu    2009 查看全文

4598   Processing and properties of PLA/thermoplastic starch/montmorillonite nanocomposites Processing and properties of PLA/thermoplastic starch/montmorillonite nanocomposites A. Frouml;hlich    2009 Thermoplastic starch (TPS) and polylactic acid (PLA) were compounded with natural montmorillonite (MMT) using a twin-screw extrusion process to investigate the structure and properties of these nanocomposites and to examine the use of water to enhance clay exfoliation. Tensile and essential work of fracture measurements were performed on standard dumbbell shape samples and on double notched samples to determine the effect of MMT and PLA/TPS interfacial modification on the mechanical and fracture... 查看全文

4599   Elution fractionation of crystalline polypropylene† Elution fractionation of crystalline polypropylene† A. Frouml;hlich    2003 A number of commercial and experimental samples of crystalline polypropylene were fractionated by sand column solvent gradient elution techniques. Two different solvent—nonsolvent systems were studied under several sets of experimental conditions. Deposition of polymer upon the sand from a thermodynamically poor solvent was found to be necessary to achieve selective fractionation according to molecular weights. Both selective and nonselective fractionation results are illustrated with the ... 查看全文

4600   Influence of inorganic phosphate on the lipid synthesis of a phosphate-deregulated mutant of Streptomyces noursei Influence of inorganic phosphate on the lipid synthesis of a phosphate-deregulated mutant of Streptomyces noursei I. Alvarez-Armas, A. F. Armas and C. Petersen    2007 Phosphate-dependent changes of the mycelial lipid composition were studied in the streptothricin-producing parental strain Streptomyces noursei JA 3890 b/2 and its mutant RG 2. In contrast to its ancestor, the mutant was capable of producing the antibiotic nourseothricin even when large quantities of inorganic phosphate were present in the medium. The apparent insensitivity of the secondary metabolism to phosphate inhibition corresponds to a decreased level of phospholipids in the presence of ex... 查看全文

4601   Coalescence frequencies in Waldhof-agitated systems Coalescence frequencies in Waldhof-agitated systems I. Alvarez-Armas, A. F. Armas and C. Petersen    2004 查看全文

4602   Pathological remarks on sarcoma of the long bones Pathological remarks on sarcoma of the long bones I. Alvarez-Armas, A. F. Armas and C. Petersen    2005 查看全文

4603   The excystment of protozoa. Isolation of crystalline excystment factors for colpoda duodenaria† The excystment of protozoa. Isolation of crystalline excystment factors for colpoda duodenaria† D. B. MARSHALL and B. R. LAWN    2005 查看全文

4604   The Place of the Intensive Therapy unit in the General Hospital The Place of the Intensive Therapy unit in the General Hospital    2008 查看全文

4605   Determination of plane-strain fracture toughness of polyethylene copolymer based on the concept of essential work of fracture Determination of plane-strain fracture toughness of polyethylene copolymer based on the concept of essential work of fracture MARCEL J. E. GOLAY    2009 Toughness and deformation capacity of six polyethylene copolymers in plane-strain fracture were characterized using the concept of essential work of fracture (EWF). Two types of regression analysis were considered: one based on the traditional, total work of fracture, while the other on the energy partition to extract the portion that is relevant to the plane-strain fracture. In particular, the latter analysis excludes energy that is for the final stretch of the surface flanks and produces tough... 查看全文

4606   Fachgerechte Erstellung von Fugen in Verblendfassaden Fachgerechte Erstellung von Fugen in Verblendfassaden F. R. Fichter and Raymond Gunst    2010 Für die Erstellung optisch einwandfreier Verblendfassaden mit sachgerecht ausgeführtem Witterungsschutz bietet die Industrie Werktrockenmörtel an, die an die unterschiedlichen Steinqualitten angepasst wurden. Gute Argumente für die Baustellenpraxis bieten Vormauermörtel, bei denen die Fugengestaltung mit dem Fugenglattstrich “aus einem Guss” erfolgt. Bei Verwendung von speziellen Fugenmörteln ist auch mit nachtrglicher Verfugung eine dichte Fuge zu erzie... 查看全文

4607   Lifelong reporter gene imaging in the lungs of mice following polyethyleneimine-mediated sleeping-beauty transposon delivery Lifelong reporter gene imaging in the lungs of mice following polyethyleneimine-mediated sleeping-beauty transposon delivery    2011 Polyethyleneimine (PEI) is a cationic polymer that is effective in gene delivery in vivo. Plasmid DNA incorporating the Sleeping-Beauty (SB) transposon has been shown to induce long-term transgene expression in mouse lungs after PEI-mediated delivery. In the current report, we followed the reporter gene expression mediated by PEI/SB delivery in lungs of mice using the non-invasive bioluminescent imaging (BLI) technology. After delivery, the reporter gene signal showed a rapid decay in the first ... 查看全文

4608   Sleeping Beauty-mediated suicide gene therapy of hepatocellular carcinoma Sleeping Beauty-mediated suicide gene therapy of hepatocellular carcinoma    2009 The aim of this study was to use gene therapy via the Sleeping Beauty (SB) system to increase telomerase promoter activity to target hepatocellular carcinoma (HCC). In previous studies, we identified selective and increased expression of luciferase and suicide genes controlled by the hTERT (human telomerase reverse transcriptase) promoter and the SV40 enhancer in telomerase-positive cancer cell lines. Because telomerase is activated in about 80% of HCCs, it is likely that increasing the activity... 查看全文

4609   Theoretical status of diamond and its defects, excited states and atomic motion Theoretical status of diamond and its defects, excited states and atomic motion    1992 The key technical problems for diamond concern control; controlled growth (quality, composition, shape and texture), controlled doping (lasing species, electrically active species, redistribution and anneal of implanted species) and controlled interfaces (contacts, passivation, adhesion and friction). Theory has contributed to all these. Here I shall concentrate on electronic and motional aspects of defects. Several key phenomena involve features of the excited states, and I emphasize what can b... 查看全文

4610   Size and composition of ego-centered social networks and their effect on geographic distance and contact frequency Size and composition of ego-centered social networks and their effect on geographic distance and contact frequency    2009 Social activities are responsible for a substantial proportion of trips by individuals and households. Therefore, travel demand is determined primarily by the size and the spatial distribution of people's social networks. In the field of transportation, little is known about social networks in relation to trip generation. However, research interest in social networks is rapidly emerging. This paper describes the instrument used to collect data on ego-centered social networks in a survey in the N... 查看全文

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