This study focuses on a secondary contact zone between two sister species of woodrat, Neotoma fuscipes (dusky-footed woodrat) and N. macrotis (big-eared woodrat). Along the Nacimiento River, on the border of southern Monterey and northern San Luis Obispo counties, the ranges of these sister species of woodrats meet and overlap forming a secondary contact zone. The zone of secondary contact is estimated to include a 500-meter (~1,650 linear feet) portion of the Nacimiento River riparian corridor. This research examines quantifiable morphological change that is likely associated with heightened inter-specific competition within the contact zone. When in sympatry the sister species may compete for resources indirectly through exploitative competition, or directly through contest competition, or through a combination of these two processes. The prediction that heightened competition has resulted in distinctive morphological character shifts between allopatric and sympatric populations was tested my examining size and shape of adult woodrats along a 20-kilometer transect. It was confirmed that adults woodrats of the two sister taxa are morphologically distinct (N = 602) and that the phallus morphology was indeed a reliable means to identify adult male woodrats as to species (p < 0.0001, N = 331). A two model approach was used to examine convergence and divergence in size and shape of woodrats across the transect. Neotoma fuscipes exhibited a statistically significant divergerence from N. macrotis with regard to breadth of rostrum (p < 0.0001, N = 414) in a region of sympatry along the Nacimiento River. Based on the results on one statistical model, N. macrotis exhibited a statistically significant convergence with regard to body-size (p = 0.0240, N = 587) and length of hind foot (p < 0.0001, N = 563) towards those of N. fuscipes between zones of sympatry and allopatry. Alternatively, based on the results of a second statistical model that accounted for environmental variation within the system both species exhibited a statistically significant divergence with regard to body-size (p = 0.0054, N = 587) and towards that of N. fuscipes between zones of sympatry and allopatry. Also, N. macrotis exhibited a statistically significant convergence with regard to length of ear (p = 0.0022, N = 563) towards that of N. fuscipes. Based on the results of both models, detectable re-patterning of size-independent traits was observed to varying degrees. The morphological character shifts between sympatric populations and allopatric populations of woodrats suggest that ecological interactions between the species are occuring. Specifically, across the contact zone, patterns of variation in body-size and other morphological character traits are consistent with expectations of a combination of contest and exploitative competition.

En förutsättning för att revisionsbyråer skall överleva, är att lägga fokus på både förbättring och förnyelse av tjänster och produkter. Detta för att företag kontinuerligt behöver anpassa sitt utbud till den externa miljöns skiften och föränderliga efterfrågan. Syftet med denna studie är att förklara hur integrerat ledarskap påverkar förmågan att uppnå ambidexterity i revisionsbyråer. Studien har för avsikt att utforska olika ledarskapsstilar och eventuella samband mellan dessa och ambidexterity i revisionsbyråer. Genom användning av relevant teori och angränsande litteratur som berör integrerat ledarskap och ambidexterity, har en modell tagits fram som undersöker kopplingar mellan de aktuella ledarskapsstilarna och ambidexterity i revisionsbyråer. Med hjälp av en enkätundersökning som skickades till auktoriserade och godkända revisorer, har modellen testats empiriskt. Detta resulterade i 141 svar, där 104 svar var fullständiga. Resultaten av studien indikerar att ingen av de testade ledarskapsstilarna kan signifikant förklara någon påverkan på ambidexterity, dock tyder resultatet på att en auktoriserad revisor har en negativ påverkan på ambidexterity i förhållande till en godkänd revisor. Tidigare forskning tyder på att ambidexterity påverkas av faktorer som inte berörs i denna studie. Möjligtvis  har dessa faktorer starkare påverkan på ambidexterity än integrerat ledarskap vilket kan vara anledning till varför något förklarande samband på området inte kunnat påvisas. Oavsett vad som styr ambidexterity verkar revisionsbyråer i en föränderlig miljö vilket medför att förbättringar av befintligt utbud är viktigt att fokusera på samtidigt som helt nya tjänster verkar behövas för långsiktig överlevnad.   Kunskap vad gäller hur ledarskap påverkar ambidexterity kan medföra att revisionsbyråer får en inblick om vad som kan öka deras överlevnad. Genom en balans mellan exploaterande och utforskande innovationer, kan konkurrenskraften stärkas för byråerna.   Nyckelord: Ambidexterity, innovation, exploaterande och utforskande innovation, ledarskap, integrerat ledarskap, revisionsbyråer, auktoriserad och godkänd revisor. / A prerequisite for audit firms to survive, is focus on both improvement and renewal of services and products. This because companies constantly need to adapt their range of services and products to the external environment fluctuations and changing demands. The purpose of the study is to explain how integrated leadership affects the ability to achieve ambidexterity in accounting firms. The study aims to explore various leadership styles and potential relationships between them and ambidexterity in audit firms. Thru use of relevant theory and adjoining literature regarding integrated leadership and ambidexterity, a model has been produced which examines connections between the current leadership styles and ambidexterity in audit firms. With the help of a questionnaire sent to authorized and approved auditors, the model has been tested empirically. This resulted in 141 responses, with 104 completed responses.  The results of the study indicates that none of the tested leadership styles can explain effect on ambidexterity, however, the result shows that authorized auditors have a negative correlation with ambidexterity in relation to approved auditors. Recent research indicates that ambidexterity is affected by factors not being covered in this study. Possibly these factors have stronger effect on ambidexterity than integrated leadership which may be the reason why no explaining relationship has been found on the matter. Regardless what governs ambidexterity audit firms operates in a changing environment, which makes improvements of existing supply important to focus at the same time as new services seem to be needed for long term survival.   Knowledge regarding how leadership affects ambidexterity implies that audit firms get a glimpse of what could increase their survival. Through a balance between exploitative and explorative innovation, it contributes to improving the competitiveness of the firms.   Keywords: Ambidexterity, innovation, exploitative and explorative innovation, leadership, integrated leadership, accounting firms, authorized and approved auditor.

En förutsättning för att revisionsbyråer skall överleva, är att lägga fokus på både förbättring och förnyelse av tjänster och produkter. Detta för att företag kontinuerligt behöver anpassa sitt utbud till den externa miljöns skiften och föränderliga efterfrågan. Syftet med denna studie är att förklara hur integrerat ledarskap påverkar förmågan att uppnå ambidexterity i revisionsbyråer. Studien har för avsikt att utforska olika ledarskapsstilar och eventuella samband mellan dessa och ambidexterity i revisionsbyråer. Genom användning av relevant teori och angränsande litteratur som berör integrerat ledarskap och ambidexterity, har en modell tagits fram som undersöker kopplingar mellan de aktuella ledarskapsstilarna och ambidexterity i revisionsbyråer. Med hjälp av en enkätundersökning som skickades till auktoriserade och godkända revisorer, har modellen testats empiriskt. Detta resulterade i 141 svar, där 104 svar var fullständiga. Resultaten av studien indikerar att ingen av de testade ledarskapsstilarna kan signifikant förklara någon påverkan på ambidexterity, dock tyder resultatet på att en auktoriserad revisor har en negativ påverkan på ambidexterity i förhållande till en godkänd revisor. Tidigare forskning tyder på att ambidexterity påverkas av faktorer som inte berörs i denna studie. Möjligtvis  har dessa faktorer starkare påverkan på ambidexterity än integrerat ledarskap vilket kan vara anledning till varför något förklarande samband på området inte kunnat påvisas. Oavsett vad som styr ambidexterity verkar revisionsbyråer i en föränderlig miljö vilket medför att förbättringar av befintligt utbud är viktigt att fokusera på samtidigt som helt nya tjänster verkar behövas för långsiktig överlevnad. Kunskap vad gäller hur ledarskap påverkar ambidexterity kan medföra att revisionsbyråer får en inblick om vad som kan öka deras överlevnad. Genom en balans mellan exploaterande och utforskande innovationer, kan konkurrenskraften stärkas för byråerna. / A prerequisite for audit firms to survive, is focus on both improvement and renewal of services and products. This because companies constantly need to adapt their range of services and products to the external environment fluctuations and changing demands. The purpose of the study is to explain how integrated leadership affects the ability to achieve ambidexterity in accounting firms. The study aims to explore various leadership styles and potential relationships between them and ambidexterity in audit firms. Thru use of relevant theory and adjoining literature regarding integrated leadership and ambidexterity, a model has been produced which examines connections between the current leadership styles and ambidexterity in audit firms. With the help of a questionnaire sent to authorized and approved auditors, the model has been tested empirically. This resulted in 141 responses, with 104 completed responses. The results of the study indicates that none of the tested leadership styles can explain effect on ambidexterity, however, the result shows that authorized auditors have a negative correlation with ambidexterity in relation to approved auditors. Recent research indicates that ambidexterity is affected by factors not being covered in this study. Possibly these factors have stronger effect on ambidexterity than integrated leadership which may be the reason why no explaining relationship has been found on the matter. Regardless what governs ambidexterity audit firms operates in a changing environment, which makes improvements of existing supply important to focus at the same time as new services seem to be needed for long term survival. Knowledge regarding how leadership affects ambidexterity implies that audit firms get a glimpse of what could increase their survival. Through a balance between exploitative and explorative innovation, it contributes to improving the competitiveness of the firms.

This dissertation consists of two empirical essays. The first chapter titled: “Hedge Fund Activism and Dual Ownership of U.S. Multinationals”. Harford, Wang & Zhang (2017) conclude that holding high cash balances abroad to avoid US taxes causes internal capital markets and investments distortions. We posit that hedge funds target MNCs with more severe internal capital and agency problems. We demonstrate that upon acquiring dual ownership in these firms, hedge funds reduce internal capital problems and improve investment, especially innovation, efficiencies. To further reduce agency costs of foreign cash holdings, hedge funds engage dual firms in focused acquisitions. These improvements are reflected in superior performances of dual firms relative to non-dual firms. Chapter 2 titled as “Innovation Strategies & IPO Underpricing”. In this chapter, we investigate how a firms’ choice of pre-IPO innovation strategies affect IPO pricing. We differentiate the orientation of the issuing firm’s innovation portfolio in terms of exploitative orientation versus explorative orientation based on citations of patents across technology classes. We introduce a measure of innovation power to generate breakthrough innovations. We show that the issuing firms with greater innovation power, especially firms with exploratory orientation of a patent, significantly decrease underpricing and have the power to bargain a higher offer price. Our results suggest that a higher exploration strategy requires more time to negotiate a higher offer price while more valuable innovation requires less time to bargain at the higher offer price.

Background: Most of the existing literature regarding innovation and innovation strategies focus on high-tech industries. In contrast low- and medium-technology industries are receiving very little attention despite the category is making up the largest part of the manufacturing industries in OECD countries. The phenomenon could be the result of misconceptions regarding innovation process in low- medium-tech industries and existing pre-eminence of linear model of innovation. Investigating the realities of innovation strategies in the low- and medium technology industries would help crystallise the understanding of innovation strategies within low- and medium technology industries uncovering key factors for innovation under the industry category. Research question: How do organisations under low- and medium-technology industry category innovate and what is the impact the chosen innovation strategy or a combination of innovation strategies have on the organisation? Purpose: The purpose of this study is to understand which innovation strategies (open, closed, exploitative, explorative or a combination of these strategies) organisations under low- and medium technology industry implement and how such innovation strategies impact the organisation. The aim of the study is to crystallise the understanding in how LMTs innovate, which innovation strategies they select and what influences the selection of innovation strategy. Method: Abductive research approach is used for the study. Qualitative research method is a primary source of data gathered from 8 organisations operating under low- and medium- technology industry category. The data was gathered via semi-structured interviews with C- level executives and management responsible for innovation initiatives. Theoretical framework: The literature will present knowledge based view and outline the link between knowledge and open, closed, exploitative and explorative innovation strategies. Findings &amp; conclusion: Ability to identify relevant knowledge and assimilate it drove innovation within the LMTs assessed. Innovation strategies were selected based on understanding of additional information requirements and market environment in their respective markets. Various combinations of innovation strategies were used at the assessed organisations. Some of the assessed organisations used more open or more closed innovation strategies based on business circumstances. Open innovation strategies enabled fast knowledge accumulation and problem solution discovery. Organisational cultures influence the choice of innovation strategies. Peoples’ knowledge drives performance.

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Abstract in English, Afrikaans and Zulu / In 2016, Zimbabwe introduced specific transfer pricing legislation to prevent abusive tax strategies by taxpayers. This study uses a qualitative interpretive inquiry to assess the adequacy of the new transfer pricing regime. This study contributes to the body of knowledge in that it explores transfer pricing as a tax avoidance tool, a concept that is at its nascent stage in academic taxation literature. Furthermore, it addresses a methodological gap by employing a qualitative inquiry in an area that is predominated by quantitative research. Indepth interviews and document review were used to gather data, and deductive content analysis was employed with the aid of ATLAS.ti 8™. This study confirms previous findings that tax consultants play a significant role in the compliance decisions of Multinational Enterprises (MNEs) through the examination of the exploitative strategies practiced by these MNEs. The comparison of the OECD and UN transfer pricing guidelines in search for the applicability of international guidelines to Zimbabwe’s specific needs helped uncover the contemporary dilemmas in global standards versus domestic standards. This study responds to the knowledge gap regarding the transfer pricing phenomenon in Zimbabwe through the lenses of an under-explored three-layered rationality concept; legal, implementation and exploitative rationality. The argument maintained in this study is that this rationality trichotomy is a useful lens to understand transfer pricing as a tax avoidance tool, and that international standards are not universal and so each country’s unique situation should be addressed at a domestic level. / Zimbabwe het in 2016 bepaalde oordragprysingswetgewing ingestel om onregmatige belastingstrategieë deur belastingbetalers te voorkom. Hierdie studie het ’n kwalitatief-interpretatiewe ondersoek gebruik om die toereikendheid van die nuwe oordragprysingsregime te assesseer. Die studie lewer ’n bydrae tot die kennismateriaal omdat dit oordragprysing as ’n belastingvermydingsinstrument ondersoek, ’n konsep wat in sy kinderskoene in akademiese belastingliteratuur staan. Dit verken ook ’n metodologiese gaping deur ’n kwalitatiewe ondersoek te gebruik op ’n gebied wat deur kwantitatiewe navorsing oorheers word. Omvattende onderhoude en dokumentbeoordelings is gebruik om data in te samel en deduktiewe inhoudsontleding is met behulp van ATLAS.ti 8™ gedoen. Hierdie studie bevestig vorige bevindinge dat belastingkonsultante ’n baie belangrike rol speel by die nakomingsbesluite van multinasionale ondernemings (MNO’s), gebaseer op die ondersoek van die uitbuitende strategieë wat deur hierdie MNO’s beoefen word. ’n Vergelyking van die Organisasie vir Ekonomiese Samewerking en Ontwikkeling (OESO) en die Verenigde Nasies (VN) se oordragprysingsriglyne om die toepaslikheid van internasionale riglyne ten opsigte van Zimbabwe se bepaalde behoeftes te bepaal, het gehelp om die eietydse dilemmas van globale standaarde versus huishoudelike standaarde bloot te lê. Hierdie studie stem ooreen met die kennisgaping rakende die oordragprysingsverskynsel in Zimbabwe deur deur die lens van ’n onderontgindedrielaag-rasionaliteitskonsep, naamlik wetlike, implementerings- en uitbuitende rasionaliteit, te kyk. Die studie voer aan dat hierdie rasionaliteitsdrieledigheid ’n nuttige manier is om oordragprysing as ’n belastingvermydingsinstrumente te verstaan, dat internasionale standaarde nie universeel is nie en dat elke land se unieke situasie derhalwe op ’n huishoudelike vlak aangespreek moet word. / Ngonyaka we-2016, izwe laseZimbabwe lithula imithetho ebhekene ngqo nokwedluliselwa kwezezimali zentengiselwano ukuvimbela ukusetshenziswa ngendlela esakuhlukumeza amasu ezentela ngabakhokhintela. Lolu cwaningo lusetshenziselwa uphenyo olukhombisa ukuhumusha okuphathelene nobungaki bento ukuze luhlolisise ukudluliselwa kwesikhathi sokuphatha esisha ekudlulisweni kokubekwa kwamanani emali. Ucwaningo lunomethelela olwazini olufanele ngokuthi lihlola ukubekwa kwamanani njengethuluzi eligwema ukukhokhwa kwentela, njengomqondo osesesigabeni sokuqala ukukhula ezifundweni zemibhalo yezentela. Ngaphezu kwalokho, sikhuluma ngegebe elikhombisa indlela yokwenza izinto ngokusebenzisa uphenyo olukhombisa ubungako bento endaweni egxile ocwaningweni olubheke obungako bento. Ukuthola ulwazi ngalokhu kuye kwasetshenziswa izinhlolokhono ezijulile kanye nokubuyekezwa kwemiqulu yamabhuku, kanye nokusetshenziswa kokuhlaziya okuqukethwe okuphunguliwe ngokubambisana nosizo le-ATLAS.ti 8™. Lolu cwaningo luqinisekisa okutholakale ngaphambilini okubonisa ukuthi abeluleki bezentela badlala indima ebalulekile ezinqumweni zokuthobela imithetho yezinkampani zamazwe angaphandle ngokusekelwe ekuhlolweni kokuxhashazwa kwamasu enziwa yizo izinkampani zamazwe angaphandle. Ukuqhathaniswa kwe-OECD kanye ne-UN mayelana nokudlulisela imihlahlandlela yamanani ekufuneni ukusebenza kwemihlahlandlela yeziqondiso zomhlaba wonke ngokwezidingo zaseZimbabwe kusize ekwembuleni izinkinga zesikhathi esizayo emazingeni omhlaba ngokuhambisana namazinga ezindinganiso zomhlaba jikelele ngokuhambisana namazinga asekhaya. Lesi sifundo siphendula igebe lolwazi elimayelana nokwedluliselwa kwesimo sokubekwa kwenani lemali kwezezintengiselwano eZimbabwe ngokusetshenziswa kokubhekwa komqondo onezigaba ezintathu ongaphansi kwesilanganiso sokuhlola, okungumthetho, ukwenziwa kwakhona kanye nokuxhashazwa kwemiqondo. Lolu cwaningo luphikisana nokuthi lomqondo ongunxantathu yinto ebhekwe ngamehlo abomvu futhi ebalulekile ekuqondeni ukudluliselwa kokubekwa kwesimo sezemali njengethuluzi lokugwema ukukhokhwa kwentela, okusho ukuthi amazinga omhlaba awasiyo into efanayo nokuthi izwe ngalinye linesimo salo esingafanani nelinye okwenza ukuthi isimo ngasinye sibhekwe ngokwesimo sezinga lasekhaya. / Financial Accounting / D. Phil. (Accounting Sciences)