10,907 research outputs found
sj-pdf-1-cmx-10.1177_10775595221103420 – Supplemental Material for The Association Between Child Maltreatment and Loneliness Across the Lifespan: A Systematic Review and Multilevel Meta-Analysis
No full textSupplemental Material, sj-pdf-1-cmx-10.1177_10775595221103420 for The Association Between Child Maltreatment and Loneliness Across the Lifespan: A Systematic Review and Multilevel Meta-Analysis by Coriena de Heer, Shanshan Bi, Catrin Finkenauer, Lenneke Alink and Marlies Maes in Child Maltreatment</p
La0.8Sr0.2Co1-xMnxO3 perovskites as efficient bi-functional cathode catalysts for rechargeable zinc-air batteries
No full textIn this work, the La0.8Sr0.2Co1-xMnxO3 (x = 0, 0.2, 0.4, 0.6, 0.8,1) perovskites (LSCM) were synthesized by a facile improved sol-gel method. The crystalline structures, morphologies, Co/Mn valence states and oxygen adsorption/desorption behavior of the LSCM materials are systematically studied, and their catalytic activities toward ORR and OER are investigated by the rotating-disk electrode (RDE) and zinc-air battery techniques. It is found that the proper substitution of Co with Mn can efficiently improve the ORR and OER activities of La0.8Sr0.2CoO3 perovskite at the same time. The LSCM-60 catalyst exhibits the optimum bi-functional activity. It is mainly attributed to the regulation of the Bi-site Co/Mn valence states and the improvement of the oxygen adsorption/desorption capability. Besides of the good bifunctional property, LSCM-60 shows superior durability compared with Pt/C and IrO2 catalysts. When using LSCM-60 as the cathode catalyst of zinc-air batteries, the low charge-discharge overpotential (1.05 Vat 50 mAcm (2)) and the excellent long-term cycle stability were obtained. This study exhibits the possibility to improve the bi-functional activity of La0.8Sr0.2CoO3 through a simple doping process. (C) 2017 Elsevier Ltd. All rights reserved
Client-consultant interaction practices: Sources of ingenuity, value creation and strategizing
No full textService providers increasingly choose to interact with their clients. Previous studies show that client’s resources and activities can influence the service provider’s ability to create value, to be creative, and to develop competitive strategies. Yet several gaps can be identified in the literature regarding how these abilities are impacted by client-consultant interaction (c-c-i) practices. The purpose of this doctoral thesis is to explain the service providers’ varying ability to offer highly valuable solutions to their clients’ problems, in terms of the practices through which consultants interact with their clients. The main research questions are;
How do client-consultant interaction practices influence a firm’s ability to offer unique value propositions and deliver ingenious solutions, and how do these practices influence the formation of the firm’s strategy? These questions are answered through four papers. Each paper answers a sub-question.
Paper 1 focuses on the impact of c-c-i practices on the service providers’ ingenuity capabilities. The paper asks how project teams shatter constraints in ill-structured problem-solving situations, and what implications this finding has for the understanding of creative action in organizations. This paper sheds light on the c-c-i practices through which project teams shatter their constraints and create ingenious solutions.
Paper 2 focuses on the creative aspects of c-c-i practices and presents the experiences of service providers who have been successful in capitalizing on the creative resources provided by their clients.
Paper 3 is an inquiry into the relationship between c-c-i practices and the service providers’ ability to offer unique value propositions. The paper provides a model to define and assess value created through c-c-i practices. The findings of this paper show that value creation is maximized through c-c-i practices that provide access to various forms of capital and practice that enable capital exploitation. Unique value offerings can be developed from knowing what c-c-i practices to enact in different circumstances.
Paper 4 focuses on the implications of c-c-i practices for the emergence of new strategies. The findings show that mundane business operations can be the locus of strategizing, and that clients can play a role in emergent strategy formation. Theoretical resources for this research are drawn from literature on practice theory, strategy, organizational creativity, and value creation. An explorative research design is used and qualitative data are gathered from 30 cases through extensive field work. Both in-depth and comparative case analyses are performed
Effective email marketing: an empirical study of the impact of personalized communication on customer engagement and purchase decisions
No full textMasteroppgave(MSc) in Master of Science in Business, Marketing - Handelshøyskolen BI, 2019This study investigates the impact of behavior-based personalization on
customer engagement and purchase behavior in the context of email marketing. For
this purpose, the author reviews and combines the following research streams in the
literature: email marketing, personalization of marketing communication, and
customer engagement.
To answer the research question at hand, the author designs a field study in
collaboration with Kahoot! AS, a fast-growing Norwegian start-up company
operating in the education technology industry. Kahoot!’s game-based learning and
trivia platform is used in multiple settings – school and university classrooms,
business training and presentations, social, cultural, and other events (retrieved
from kahoot.com). By leveraging marketing automation technology, which
Kahoot! uses for the email campaigns’ creation and management, the author sets
up and runs the experiment. Findings of the study provide marketing managers with
useful insights on the effectiveness of behavior-based personalization in the email
marketing context as well as contribute to the ongoing academic discussion about
personalized marketing communication and customer engagement.
The results reveal that email communication has a significant positive effect
on customer engagement irrespective of behavior-based personalization. This
proves that email is an effective marketing communication channel, and it should,
therefore, remain a key part of the digital media mix used by marketers. However,
based on the lack of a significant difference in the effectiveness of personalized and
non-personalized email campaigns, the author recommends focusing more on highquality
generic content and the design of the email messages. Furthermore,
consistent with the viewpoints of researchers in the field, the study confirms that
customer engagement is a significant predictor of customer purchases, leading to
the conclusion that firms should invest in customer engagement marketing
initiatives to ultimately achieve better firm performance
Multiproject "hostile" environments
No full textBacheloroppgave i Prosjektledelse fra Handelshøyskolen BI, 2017This thesis addresses the problems and challenges of working in a multiproject
environment, and what could we do to improve it.
The thesis has been prepared in connection with the program BIK 6512 Project
Management 3, at BI Department of Management and Organization Oslo.
The author has been working as a project manager himself for the organization
described for the last 5 years. I’m a Spanish construction engineer who moved to
Norway 5 years ago with my whole family because of the Spanish economy crisis.
I have several years of experience as project manager in Spanish construction
industries, and now I'm leading offshore projects for a Norwegian O & G
engineering company (IKM dsc Engineering). I would like to remark that I’m
fluent in Norwegian and English, but I can express myself much better in English
even though is not my mother language. Please have this in mind when reading
the thesis, thanks!
This thesis has been basically prepared for my own learning, but I really hope it
can contribute to improve the way we face daily our work in a multiproject
environmen
Inverse synthetic aperture radar imaging interface
No full textIn this project, the following two parts of work are mainly considered. The scope of the first part is to study the fundamental theory, particularly the imagery algorithm, for inverse synthetic aperture radar (ISAR) imaging, which is a powerful radar signal processing technique for high-resolution imagery of moving targets. The second part of the project is focused on the Matlab interface design for the simulation and demonstration of different ISAR imaging algorithms in various scenarios.
Firstly, the author reviews the theory of inverse synthetic aperture radar imaging technique, including imagery algorithms for both regular and maneuvering targets. The main task for the author on this part is to study the ISAR imaging technique and simulate the signal processing algorithms with Matlab. Subsequently, the algorithms are tested with simulated and real data.
Secondly, the Matlab interface design is also considered in this project. The graphical user interface (GUI) design procedures and results are presented to interactively demonstrate the performances of ISAR imagery algorithms on various dataset.
Finally, the author concludes this project and discusses the future work.Bachelor of Engineerin
Ordering of organic molecules on templated surfaces
No full textThis thesis describes the controlled growth of molecular nanostructures using modified metallic and semiconductor surfaces. The Ag/Si(lll)-(root3 x root3),the Sn/Cu(100) surface alloy system and the Bi/Si(100) nanolines and (2xn) surfaces were all investigated as suitable substrates for the controlled growth of pentacene, (C22H14) or trimesic acid, (C6H3(COOH)3) organic molecules. The following techniques were used in this study; Scanning Tunnelling Microscopy (STM), Low Energy Electron Diffraction (LEED), Normal Incident X-Ray Standing Waves (NIXSW) and Temperature Programmed Desorption (TPD).
The room temperature growth and ordering of trimesic acid on the AgfSi(ll1)-(root3 x root3) surface was investigated. An oblique unit cell was determined and a model proposed for the highly ordered close-packed domains.
The discovery of a new submonolayer phase on Sn/Cu(100) and the re-examined known phase are discussed. New models for these reconstructions are proposed. Adsorption of trimesic acid at room temperature on the clean substrate the lowest Sn coverage phase were studied. Two new Sn coverage dependent structures were discovered and bonding schemes in upright and flat orientations are discussed.
BifSi(100)-(2xn) surface was exploited as a template for the ordered growth of pentacene, which exhibited orientation specific adsorption. The Bi/Si(100)-(2xn) single domain surface created on vicinal silicon was used to test the suitable of Daresbury 4.2 beamline for NIXSW Imaging experiments and the quality of the results are discussed
Performances of an Al-0.15 Bi-0.15 Pb-0.035 Ga alloy as an anode for Al-air batteries in neutral and alkaline electrolytes
No full textAluminum is a very good candidate anode for metal-air batteries due to its negative electrode potential, high theoretical electrochemical equivalent value, abundant reserves and environmental friendliness. The corrosion behavior and electrochemical properties of the Al-1.5Bi-1.5Pb-0.035Ga alloy were investigated by self-corrosion tests and electrochemical techniques, and compared with that of pure Al and Al-Bi-Pb alloys. The performances of Al-air batteries based on these alloy anodes were studied by constant current discharge and I-V discharge tests. The corrosion morphology and discharge surface were also investigated by scanning electron microscopy (SEM)and energy dispersive X-ray (EDX) analysis. The results show that the Al-Bi-Pb-Ga alloy provides a more negative potential and exhibits an enhanced activity in NaCl solution compared with pure Al and Al-Bi-Pb alloys, and gives high power density (253.4 +/- 2.5 mW cm(-2)) and desirable anode efficiency (85.4 +/- 0.5%) when used as an anode for Al-air batteries in KOH solution. Moreover, the dissolution mechanism of the Al-Bi-Pb-Ga alloy is also characterized based on the electrochemical measurements and microstructure observations
Synthesis and Characterization of (1-x)(Na(0.5)Bi(0.5))TiO(3)-xAl(6)Bi(2)O(12) Solid Solution
No full textThe new lead-free (1-x)(Na(0.5)Bi(0.5))TiO(3)-xAl(6)Bi(2)O(12) compounds with x=0.01, 0.02, and 0.03 have been synthesized by conventional solid-state ceramic-fabrication technique. Systematic investigations on the dielectric, ferroelectric and piezoelectric properties of both poled and unpoled samples have been carried out. It was revealed that the dielectric and piezoelectric properties are improved by the addition of an appropriate amount of Al(6)Bi(2)O(12). Comparisons of these properties between poled and unpoled samples are presented. It is found that Curie temperatures and remnant polarization are increased after poling. The coercive field is, however, decreased after poling
Risk modelling and Optimization of Hedging Strategy for a Norwegian Hydropower Producer
No full textMasteroppgave(MSc) in Master of Science in Business Analytics - Handelshøyskolen BI, 2022Presented in collaboration with Hafslund Eco, this thesis examines the process
of decision making for a Norwegian hydropower producer over the medium term.
As part of this process, risk modelling and optimization of the hedging strategy
are undertaken in order to establish an e↵ective frontier between the expected
income and downside risk. The e↵ective frontier reveals the relationship between
expected income and downside risk, more specifically how minimizing downside
risk influences expected income. Having such a model available is a valuable decision
support tool for anyone involved in managing the hedging portfolio of a
hydropower company. Therefore, the author of this thesis considers it to be an
important element of risk management. The main contributions made by this
thesis include a stochastic optimization model for optimizing the hedging portfolio
of a Norwegian hydropower producer and a general analysis of this model.
Additionally, this thesis examines the cost of eliminating the lower-tail outcomes.
By eliminating lower-tail outcomes from the revenue distribution, higher-tail outcomes
are to some extent eliminated as well. However, this depends on the distribution
of the price scenarios and how volatile these are. The model can be used
for speculative trading as well as for hedging. As a result, the thesis compares the
two scenarios in terms of expected income, low income scenarios and high income
scenarios. The thesis concludes with a discussion of tax e↵ects on downside risk
and hedging
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