Abstract in Zulu, English and Afrikaans / This study examined the consequences of Principal-Agent and Corporate Governance interactions within South Africa’s FTSE/JSE Top40 listed companies from 2008 to 2016. The study’s objectives were to examine the prevalence of Principal-Agent and Corporate Governance problems, to ascertain potential costs of these problems, to establish their socio-economic consequences, and evaluate the effectiveness of the governance codes. The study is anchored in Principal-Agent theory. Mixed methods methodology was employed, specifically Concurrent and Exploratory Sequential Mixed Methods design logics. The main findings include that, 23.91% of sample companies experienced Principal-Agent and Corporate Governance problems- significantly exceeding the study’s expectations that negligible governance problems exist and reveals the pervasiveness of these problems; executive compensation plays a bigger role in exacerbating Principal-Agent and Corporate Governance problems than expected and often considered in governance mechanisms; multi-billion rands potential costs are ascribed to Principal-Agent and Corporate Governance problems incurred by principals; unjustifiable salary inequalities resulting in other inequalities that build social mistrust; and there is limited conviction that current governance codes are effective. This study’s contributions include; proposing an executive remuneration model that considers governance of the company in determining executive compensation; formulating a governance index calculated based on King III and King IV recommendations to standardise the measurement of the quality of governance in companies; the salary Gini was used to establish compensation gaps and red-flag potential Principal-Agent problems and flaws in governance systems; and used value at risk procedures to quantify potential Principal-Agent and Corporate Governance costs. The main theoretical implications of the study’s findings are; agency theory needs extension to capture socio-economic costs and not only focus on the principal; remuneration models should consider the executive’s company governance and social and economic egalitarianism; flexibility of ‘comply or explain’ should subordinate socio-economic consequences, suggesting a hybrid approach which makes certain governance code provisions compulsory; and finally, behavioural finance theories should be used in governance research for better insights. / Lolu cwaningo lwacubungula futhi lwahlolisisa imiphumela yokuxhumana phakathi kwesimo seNhloko ne-Ejenti, i-Principal-Agent, (lapho umuntu eqoka omunye ukuba athathe izinqumo kanye/noma izinyathelo egameni lakhe) nokuPhathwa nokuLawulwa Kwenkampani, ezinkampanini ezingama-40 ebezikleliswe phezulu ohlwini lwe-FTSE/JSE eNingizimu Afrika kusukela ngowezi-2008 kuya kowezi-2016. Izinhloso zalolu cwaningo kwabe kuwukubheka ukuthi zivamise kangakanani futhi zisabalele kangakanani izinkinga eziphathelene neNhloko ne-Ejenti kanye nokuPhathwa Nokulawulwa Kwenkampani ukuze kutholakale ukuthi zingakanani izindleko ezibangelwa yilezi zinkinga, nokuthola umthelela walokhu kwinhlalomnotho, kanye nokuhlola ukuthi zisebenza kahle kangakanani izinkambiso zokuphathwa nokulawulwa kwezinkampani. Lolu cwaningo lwakhelwe phezu kwethiyori yeNhloko ne-Ejenti. Kwasetshenziswa izindlela zocwaningo ezixubile, ikakhulukazi izindlela ezixubile zokuhlola kusetshenziswa izinyathelo ezenziwa kanyekanye noma ngesikhathi esisodwa kanye nezinyathelo ezilandelanayo. Okusemqoka okwatholakala ocwaningweni kubandakanya nokuthi izinkampani okwenziwa kuzona ucwaningo ezingama-23.91% zahlangabezana nezinkinga eziphathelene neNhloko ne-Ejenti kanye nokuPhathwa Nokulawulwa Kwenkampani – okuyinani elingaphezulu kakhulu kwalokho obekulindelekile ocwaningweni, ngoba phela kwakulindeleke ukuthi zibe yingcosana kakhulu izinkinga ezikhona eziphathelene nalokhu, kepha-ke ucwaningo lwaveza ukuthi lezi zinkinga zixhaphakile impela; imiholo yabaphathi abakhulu bezinkampani idlala indima enkulu ekubhebhethekiseni izinkinga eziphathelene neNhloko ne-Ejenti kanye nokuPhathwa Nokulawulwa Kwenkampani kunalokho obekulindelekile futhi esikhathini esiningi lokhu akuyona neze into evamise ukubhekisiswa uma kwenziwa izinqubo zokuphatha nokulawula; zibalelwa kwizigidigidi zamarandi izindleko ezingena kuzona izinhloko zezinkampani okucatshangwa ukuthi zibangelwa yizinkinga eziphathelene neNhloko ne-Ejenti kanye nokuPhathwa Nokulawulwa Kwenkampani; ukungalingani ngokwemiholo, ngaphandle kwesizathu esizwakalayo salokhu, okuyinto eholela kokunye futhi ukungalingani, okudala ukungathembani emphakathini; futhi kuncane kakhulu ukuqiniseka nokukholelwa ekutheni zisebenza kahle izinkambiso zokuphatha nokulawula ezikhona njengamanje. Igalelo lalolu cwaningo libandakanya isiphakamiso semodeli yemiholo yabaphathi abakhulu ebhekisisa nodaba lokuphathwa nokulawulwa kwenkampani ngenkathi kucutshungulwa udaba lwemiholo yabaphathi abakhulu; ukuhlanganiswa kwenkomba yokuphathwa nokulawulwa kwenkampani ebalwa ngokususela kwizincomo ze-King III kanye ne-King IV zokusetshenziswa kwesikali esifanayo sokukala ikhwalithi yokuphathwa nokulawulwa kwezinkampani; isikali semiholo se-Gini sasetshenziswa ukuhlonza amagebe akhona phakathi kwemiholo kanye nokuxwayisa ngezinkinga ezingahle zivele eziphathelene neNhloko ne-Ejenti kanye nokuPhathwa Nokulawulwa Kwenkampani kanye namaphutha nobuthakathaka obukhona ezinhlelweni zokuphatha nokulawula; futhi kwasetshenziswa izinqubo zezikali zobungozi bokulahlekelwa kwenkampani ukubala inani lezindleko okungenzeka kungenwe kuzona ngenxa yezinkinga eziphathelene neNhloko ne-Ejenti kanye nokuPhathwa Nokulawulwa Kwenkampani. Imibonongqangi evele kulokho okutholakale ocwaningweni yilena elandelayo; ithiyori echaza ubudlelwano phakathi kwenhloko ne-ejenti kumele yelulwe ukuze ifake phakathi nezindleko eziphathelene nenhlalomnotho futhi lokhu kungagcini nje kuphela kwinhloko; amamodeli omholo kumele abhekisise nendlela ephethwe ngayo inkampani ngabaphathi abakhulu kanye nemfundiso yokulingana kwabantu bonke ngokwenhlalo nangokomnotho; ukuguquguquka ‘kokuthobela umthetho noma ukuchaza’ (‘comply or explain’) kumele kube ngaphansi uma kuqhathaniswa nemiphumela yenhlalomnotho, ukuze kuqhanyukwe nendlela exubile ephoqelela ukusetshenziswa kwezinkambiso zokuphatha nokulawula ezithile; kanti futhi, okokugcina, ocwaningweni lokuphatha nokulawula kumele kusetshenziswe amathiyori aphathelene nesimo somqondo sabaphathi ngenkathi bethatha izinqumo nezinyathelo eziphathelene nokuphathwa nokusetshenziswa kwezimali ukuze kuqondakale kangcono konke okuphathelene nalokhu. / Hierdie studie het van 2008 tot 2016 die gevolge van die wisselwerking tussen hoofagent- en korporatiewe regering in Suid-Afrikaanse FTSE/JSE Top 40- genoteerde maatskappye bestudeer. Die oogmerke was om die voorkoms van probleme met hoofagent- en korporatiewe regering te ondersoek; die moontlike koste en die sosio-ekonomiese gevolge daarvan te bepaal; en die doeltreffendheid van die regeerkodes te evalueer. Hierdie studie berus op die hoofagentteorie. Gemengde metodes is as metodologie gebruik, in die besonder gelyklopende en verkennende, opeenvolgende metodes. Die belangrikste bevindings is dat 23,91% van steekproefmaatskappye probleme met hoofagent- en korporatiewe regering ondervind. Dit is beduidend hoër as die persentasie wat verwag is, en ʼn aanduiding van hoe diepgaande hierdie probleme is. Die vergoeding van uitvoerende beamptes is ʼn groter oorsaak van die probleme met hoofagent- en korporatiewe regering as wat verwag is en waarvoor in regeermeganismes voorsiening gemaak word. Die potensiële koste, wat miljarde rande beloop, word gewyt aan die probleme met hoofagent- en korporatiewe regering wat prinsipale hulle op die hals haal. Onregverdigbare salarisverskille lei tot ongelykheid wat sosiale wantroue wek. Hierbenewens is daar bedenkinge oor die doeltreffendheid van die huidige regeerkodes. Die bydrae van hierdie studie behels ʼn vergoedingsmodel vir uitvoerende beamptes wat korporatiewe regering in ag neem. Hierdie studie formuleer ʼn regeerindeks wat op King III- en King IV-aanbevelings berus, en die meting van die gehalte van korporatiewe regering standaardiseer. Verskille in vergoeding, potensiële rooivlag-hoofagentprobleme en gebreke in regeerstelsels is met behulp van die salaris-gini bepaal. Waarde-op-risikoprosedures is gebruik om die potensiële koste van hoofagent- en korporatiewe regering te kwantifiseer. Die belangrikste teoretiese implikasie van die bevindings is dat die agentskapsteorie uitgebrei moet word sodat die sosio-ekonomiese koste vasgestel word, en daar nie alleen op die hoofsom gekonsentreer word nie. Afgesien hiervan moet vergoedingsmodelle rekening hou met ʼn uitvoerende beampte se korporatiewe regering en met maatskaplike en ekonomiese egalitarisme. Voorts moet die sosio-ekonomiese gevolge ondergeskik wees aan die buigsaamheid van “voldoen of verduidelik”. Dit impliseer ʼn hibridiese benadering wat die bepalings van sekere regeerkodes verpligtend maak. Ten slotte behoort finansieringsgedragteorieë in regeernavorsing aangewend te word om groter insig te verkry. / Business Management / D. Phil. (Management Studies (Finance))

The impact of political and economic events on the asset pricing model described by the arbitrage pricing theory (APTM) was examined in order to establish if they had caused any changes in its specification. It was concluded that the APTM is not stationary and that it must be continuously tested before it can be used as political and economic events can change its specification. It was also found that political events had a more direct effect on the specification of the APTM, in that their effect is more immediate, than did economic events, which influenced the APTM by first influencing the economic environment in which it operated. The conventional approach that would have evaluated important political and economic events, case by case, to determine whether they affected the linear factor model (LFM), and subsequently the APTM, could not be used since no correlation was found between the pricing of a risk factor in the LFM and its subsequent pricing in the APTM. A new approach was then followed in which a correlation with a political or economic event was sought whenever a change was detected in the specification of the APTM. This was achieved by first finding the best subset LFM, chosen for producing the highest adjusted R2 , month by month, over 87 periods from 20 October1991 to 21 June 1998, using a combination of nine prespecified risk factors (five of which were proxies for economic events and one for political events). Multivariate analysis techniques were then used to establish which risk factors were priced most often during the three equal subperiods into which the 87 periods were broken up. Using the above methodology, the researcher was able to conclude that political events changed the specification of the APTM in late 1991. After the national elections in April 1994 it was found that the acceptance of South Africa into the world economic community had again changed the specification of the APTM and the two most important factors were proxies for economic events. / Business Leadership / DBL

The disclosure of headline earnings is one of the JSE Limited (JSE)’s listing requirements. All listed entities are required to comply with this disclosure requirement. Guidance in the form of The Circular on headline earnings is issued by the South African Institute of Chartered Accountants (SAICA), and is updated every time when there are changes to the International Financial Reporting Standards (IFRS). The Circular adopts a rules-based approach and specifies what is included and excluded in the calculation of headline earnings. The rules consist of general rules, which apply to all entities other than those industry groups with special provisions such as the life insurance entities. This study questions whether a rules-based headline earnings approach or a principles-based approach is more appropriate for the calculation of headline earnings of listed property entities on the JSE, for economic decision-making purposes. The research method consisted of questionnaires that were sent out to stakeholders. The responses from the CFOs and investment analysts show that principles-based headline earnings guidance is preferred over rules-based headline earnings guidance. / Business Management / M. Phil. (Accounting Sciences)

Using three different models, we examine the determinants of average stock returns on the Stockholm Stock Exchange during 2012-2016. By using time-series data, we find that a Fama-French three-factor model (directed at capturing size and book-to-market ratio) functions quite well in the Swedish stock market and is able to explain the variation in returns better than the traditional CAPM. Additionally, we investigated if the addition of a Price/Earning variable to the Fama-French model would increase the explanatory power of the expected returns of the different dependent variables portfolios. We conclude that the P/E ratio does not influence the expected returns in the sample we used.

In the present round table, tax specialists from Peru, Colombia, Chile and Mexico discuss about the tax reforms carried out and outstanding in their respective countries on the tax treatment of capital gain within the framework of the Latin American integrated Market. / En la presente mesa redonda, destacados especialistas de Perú, Colombia, Chile y México comentan las reformas tributarias realizadas y pendientes por realizar en sus respectivos países en torno al tratamiento tributario de las ganancias de capital en el marco del Mercado integrado Latinoamericano (en adelante, “MILA”).

Bakgrund och problem: Att vara ett börsnoterat bolag innebär en ökad kravbild samtidigt som företaget blir offentligt kan förväntningar från främst aktieägare förhöjas. Fokus mot främst aktieägarna kan i vissa fall leda till att bolaget utgår ifrån ett mer kortsiktigt förhållningssätt, i den mån att skapa värde för ägarna. För att då minimera riskerna att bli kortsiktig, blir vikten av styrning mot långsiktighet en viktig faktor. Det blir därav intressant att undersöka hur börsbolag via sin styrning beaktar distinktionen mellan aktieägarvärde och långsiktighet. Syfte: Studiens syfte är att ge en förklaring till hur styrningen påverkas av att verka i en noterad miljö och hur detta avspeglas i de olika bolagens sätt att styra verksamheten. Studien ämnar att öka kunskapen om hur synen på aktieägarvärde och långsiktighet ter sig och om möjlig hur de båda samordnas i bolagen.  Metod: Metoden som valts för studien var en kvalitativ intervjustudie som ansågs vara mest lämplig sett till frågeställningar samt studiens syfte. Den empiriska materialinsamlingen har huvudsakligen skett med hjälp av semistrukturerade intervjuer som har utförts med ledande personer i börsbolagen. Slutsats: Styrningen i börsbolag ändras inte i så stor utsträckning av att verka i en noterad miljö, men det finns tendenser att den blivit mer formaliserad gällande främst rapportering. Den strategiska och taktiska styrningen formas till viss del utifrån börsen formella krav men även till viss del av intressenters kravbild. Samordning mellan långsiktighet och skapande av aktieägarvärde blir viktig för att begränsa kortsiktiga förhållningssätt främst med hjälp av bolagens tydliga strategiska inriktning. Koordineringen sker genom börsbolagens förmåga att tillgodose både aktieägarnas krav och uppnå bolagens långsiktiga planer. / Background and research problem: To be a listed company, it implies an increase in demands and, simultaneously, the expectations from the shareholders can be enhanced. The focus towards the shareholders, could in some cases result in short-sightedness in the company to increase their value. To minimize the risks of short-sightedness, the importance of management control towards long-sightedness becomes a crucial factor. It is thereby interesting to investigate how listed companies, with their management control, considers the distinction between shareholder value and long-sightedness.  Purpose: The purpose of this study is to give an explanation of how the management control alters by acting in a listed environment, and how it reflects in the different companies´ ways to control the business. The study intends to increase the knowledge of the view of how shareholder value and long-sightedness appears and, if possible, how these coordinates in the companies.  Method: The method that was chosen for the study was a qualitative interview-study, which were considered the most appropriate method aligned to the research questions and the purpose of the study. The empirical material collection has occurred primarily with the aid of semi-structured interviews which have been conducted with senior executives in the listed companies.  Conclusion: The management control in listed companies do not change, to a large extent, although there are tendencies that it has become more formalized regarding the reporting. The strategic management and management control are formed, to a certain degree, by the stock exchange´s formal requirements but also, to some degree, the stakeholder’s demands. The coordination between long-sightedness and the creation of shareholder value becomes vital in order to constrain short-term approaches, with the aid of the companies´ clear strategic direction. The coordination occurs by the listed companies’ ability to satisfy both the shareholders demands and accomplish the companies´ long-term plans.

Abstracts in English, Zulu and Xhosa / The information communication technology (ICT) sector has, arguably, grown in leaps and bounds over the years to assume a key role in every facet of economic activity. In the wake of the fourth industrial revolution, the major policy preoccupation of governments is how to harness ICT to spur economic growth. As such, the principal objective of this study was to examine the impact of adopting ICT on the development of African stock exchanges, determine whether ICT adoption and stock market development are co-integrated, and establish any causal links between ICT adoption and stock market development. The study examined a panel of 11 African stock exchanges for the period 2008-2017 and employed various econometric techniques to test its objectives. The dependent variable for this study was stock market development, while the independent variable was ICT adoption. The control variables employed were financial freedom and economic growth proxied by gross domestic product. In its findings, the study established that the adoption of ICT has a positive and statistically significant effect on the number of listed companies, stock market capitalisation and the total value of shares traded at the selected African stock exchanges. Hence, as an economy turns out to be progressively ICT-situated, expanded access to and utilisation of ICT advances, thus improving a nation's financial economy. Secondly, it established that ICT adoption and the stock market are cointegrated and positively related in the long run. The results further indicated a bi-directional causal relationship (complementarity) between ICT adoption and stock market development. In essence, ICT adoption and stock market development reinforce each other. This study contributes to the body of knowledge in a number of ways. This is the first study to examine the phenomenon of ICT-stock market nexus employing a panel study. Moreover, the study employed a robust methodology underpinned by using indices to proxy ICT and stock market development. Thirdly, unlike other studies on this topic, this study did not just end with the first inquiry of a deterministic relationship, but also probed for co-integration of the series tested for causality and proffers policy advice. The findings of the research imply that policymakers should be more resolute when formulating ICT policies that can drive stock market development for better economic growth and for better integration with other African stock exchanges. / Umkhakha wezethekinoloji yelwazi kanye nokuthintana (ICT) ngaphandle kokuphikiswa, ukhule wandlondlobala eminyakeni edlulileko ukobana uthome ukudlala indima eqakathekileko kiyo yoke imisebenzi yezomnotho. Ekuthomeni kwamatjhuguluko wesine wezamabubulo, into ekulu yokuthoma ngomthethomgomo karhulumende kuqala ukobana ihlelo le-ICT lingasetshenziswa bunjani ukobana lihlumise umnotho. Ngakho-ke, umnqopho omkhulu werhubhululo leli bekukuhlola umthintela wokutjhugulukela ku-ICT mayelana nokuthuthukiswa kwemaraga ye-Afrika yezokutjhentjhiselana ngamatjhezi, ukuqinisekisa ukuthi mhlambe ukutjhugulukela ku-ICT kanye nokuthuthukiswa kwemaraga yamatjhezi kungahlanganiswa na, begodu nokuhloma nginanyana ngiliphi itjhebiswano phakathi kokutjhugulukela kwi-ICT kanye nokuthuthukiswa kwemaraga yamatjhezi. . Irhubhululo belihlola iphanele yeemaraga ezili-11 zokutjhentjhiselwana mwamatjhezi esikhathini esiphakathi kuka 2008-2017 begodu lisebenzise iindlela ezahlukeneko zokumeda umnotho ukobana ihlole iminqopho yayo. Ivarebuli engakazijameli yerhubhululweli bekukuthuthukiswa kweemaraga zamatjhezi, kanti ivarebuli ezijameleko yona bekukutjhugulukela ku-ICT. Amavarebuli asetjenziswe ngeemedo kube kukhululeka ngokweemali nangokuhlumisa umnotho lokhu okukhambisana nomkhiqizo woke wangekhaya wenarha. Kilokho okutholwe lirhubhululo, irhubhululo lithole ukuthi ukutjhugulukela kwi-ICT kunomthelela omuhle khulu nokuqakatheka ngokwamanani phezu kwembalo yeenkhamphani ezitloliswe ngaphasi kwemaraga yokutjhentjhisana ngamatjhezi, phezu kokuqiniswa ngeemali kwemaraga yamatjhezi kanye nenani loke lamatjhezi athengiswa eemaraga ezikethiweko zamatjhezi ze-Afrika. Yeke-ke, njengombana ituthuko yomnotho ibonakala idzimelele phezu kwe-ICT, njengombana ukutholakala kanye nokusetjenziswa kwetuthuko ye-ICT, kanti lokho kuthuthukisa umnotho wezeemali wenarha. . Kwesibili, irhubhululo likghonile ukubona ukuthi ukutjhugulukela ku-ICT kanye neemarageni zamatjhezi kuzizinto ezihlangeneko nezihlobene ngendlela ehle esikhathini eside. Imiphumela iragele phambili nokuveza itjhebiswano elinikela indlela (complementarity) phakathi kokutjhugulukela ku-ICT kanye nekuthuthukisweni kweemaraga zamatjhezi. . Eqinisweni, ngokutjhugulukela ku-ICT neemarageni zamatjhezi kuyaziqinisa lezi zinto. Leli rhubhululo lifaka isandla kuziko lelwazi ngeendlela ezinengi. Leli kulirhubhululo lokuthoma elihlola indaba yethintano lemaraga yamatjhezi elisebenzisa irhubhululo lephaneli. Ngaphezu kwalokho, irhubhululo lisebenzisa indlela ekhutheleko esekelwa kusebenzisa amatshwayo ku-ICT esekelako kanye nokuthuthukiswa kwemaraga yamatjhezi. Kwesithathu, lokhu kuhlukile kamanye amarhubhululo amalungana nalesi sihloko, leli rhubhululo akhange aphelele nje ngokuthoma ukubuza itjhebiswano elivezako, kanti begodu leli rhubhululo belihlola ukuhlanganiswa ndawonye komlandelande ehlolwe ukudala ubujamo begodu nokunikela isiyeleliso somthethomgomo. Okutholwe lirhubhululo kutjho bona abenzi bomthethomgomo kufanele baqalisise khulu lokha nabatlama imithethomgomo ye-ICT leyo engakhozelela ituthuko yeemaraga zamatjhezi ukobana kuhlume umnotho begodu nokuhlanganiswa ncono neemaraga ze-Afrika zokutjhentjhana ngamatjhezi. / Icandelo leTheknoloji yoNxibelelwano loLwazi(i-ICT) nelinokuphikiswa, likhule kakhulu ngokukhawuleza eminyakeni egqithileyo ekudlaleni indima ephambili kwiinkalo zonke zemisebenzi yezoqoqosho. Ukuvela kwenguqu yesine yezoshishino, owona mgaqo-nkqubo uphambili koorhulumente ngowokufumana iindlela zokudibanisa ezobuchwepheshe ukukhuthaza uhlumo kwezoqoqosho. Kunjalo, injongo ephambili kolu phononongo ibikukuhlola impembelelo yokusebenzisa/ yokwamkela i-ICT kuphuhliso lotshintshiselwano lweempahla zase-Afrika, ukuhlola ukuba ukwamkelwa kwe-ICT kunye nophuhliso lweemarike zidityanisiwe, kunye nokumisa naliphi na ikhonco lonxibelelwano lonobangela phakathi kokwamkelwa kwe-ICT kunye nophuhliso lwemarike yotshintshiselwano lwempahla Uphononongo lwahlola iphaneli ezili-11 zotshintshiselwano lwempahla eAfrika kwisithuba sowama-2008 kuya ku-2017 kwaye kwasetyenziswa uthotho lweendlela zobugcisa kwezoqoqosho ukuvavanya iinjongo zalo. Into eguqukayo yoxhomekeko kolu phando yayikuphuhlisa imarike yesitokhwe, ngelixa okwakuyinto ezimeleyo yayikukwamkela i-ICT. Izinto eziguquguqukayo ezilawulwayo ezazisetyenziswa yayiyinkululeko yezemali nokukhula koqoqosho okwakucaciswa ngemveliso yasekhaya ngokubanzi. Kwiziphumo zalo zophando, lufumanise ukuba ukusetyenziswa kwe-ICT kunefuthe elilungileyo elibonakalayo ngokwamanani kwiinkampani ezidwelisiweyo, ukurhweba kwimarike yesitokhwe kunye nexabiso elipheleleyo lezabelo ezithengiswa kwiimarike zesitokhwe zotshintshiselwano ezikhethiweyo zase- Afrika.. Ngenxa yoko, njengoko uqoqosho luguquka ngokuqhubekekayo luba kwimeko ye ICT lwandise ukufikeleleka kunye nokusetyenziswa kwenkqubela phambili ye-ICT, ngaloo ndlela iphucula uqoqosho lwezimali lukazwelonke. Okwesibini, yafumanisa ukuba ukwamkelwa kwe-ICT kunye nemarike yesitokhwe kudityanisiwe kwaye ziya kusebenzisana kakuhle ekuhambeni kwexesha. Iziphumo zaye zaphinda zabonisa ubudlelwane bozalwano macala (ukuphelelisa) phakathi kokwamkelwa kwe-ICT kunye nophuhliso lwemarike yotshintshiselwano/yesitokhwe. Ngokubalulekileyo, ukwamkelwa kwe-ICT kunye nophuhliso lweemarike kwenza zomelezane. Olu phando lunegalelo kulwazi oluninzi olukhoyo ngeendlela ezininzi. Olu luphando lokuqala ukuvavanya uthotho lwamakhonco emarike yesitokwe ye-ICT-isebenzisa iiphaneli zophando. Ngaphaya koko, uphononongo lusebenzise indlela engqongqo exhaswa kukusebenzisa izalathiso (indices) zomelwano kwi-ICT kunye nophuhliso lwemarike. Okwesithathu, ngokungafaniyo nolunye uphando olwenziweyo kwesi sihloko, olu phononongo aluphelanga nje kuphando lwangaphambili olwalungobudlelwane lwezigqibo (zokuzimisela), kodwa lwaphinda lwaphandela ukuhlanganiswa kothotho oluvavanyiweyo lonobangela kunye nokuphakamisa ingcebiso yomgaqo-nkqubo. Iziphumo zophando zithetha ukuba abaqulunqi bemigaqo-nkqubo kufuneka bazimisele ngakumbi xa besenza imigaqo-nkqubo ye-ICT enokuqhubela phambili ukuphuculwa kwemakethi yesitokhwe ukwenzela ukukhulisa uqoqosho olungcono kunye nokusebenzisana kakuhle nezinye iimarike zotshintshiselwano zaseAfrika. / Business Management / D. Admin. (Business Management)

Até cerca de vinte anos, o termo Corporate Governance (Governança Corporativa) não existia na língua inglesa. Os códigos de boas práticas de Governança Corporativa começaram a surgir no início dos anos noventa na Inglaterra, nos Estados Unidos e no Canadá, em resposta ao desempenho insatisfatório de companhias líderes, percebido como uma deficiência de efetividade dos conselhos de administração, e em resposta às pressões exercidas pelos investidores institucionais. No Brasil, o termo Governança Corporativa é ainda mais recente, mas já começa a ser preocupação e a merecer a atenção de pesquisadores, Bolsa de Valores e associações. Este estudo objetiva identificar possíveis relações entre variáveis independentes, representativas de mecanismos de Governança Corporativa, e medidas de performance econômica de empresas integrantes do Índice Brasil IBX da Bolsa de Valores de São Paulo BOVESPA, com dados do período de 1997 a 2001.Utilizando a técnica estatística de dados em painel, modelo de componentes de erros, trabalha-se 16 variáveis independentes representando os mecanismos de Governança Corporativa: concentração de propriedade (5 variáveis), características do conselho de administração (3 variáveis), capital votante (1 variável), remuneração da diretoria executiva (2 variáveis), política financeira (3 variáveis), controle interno (1 variável) e mais uma variável de controle representando o tamanho das empresas. Essas variáveis são regredidas contra cada uma das cinco variáveis de medidas de performance econômica estudadas. Tais variáveis mediram o Market Value Added, a razão preço de mercado e valor patrimonial da ação, TOBINS Q, rentabilidade sobre o ativo e rentabilidade sobre o patrimônio líquido. Os resultados indicam que a concentração de propriedade, o capital votante, a remuneração da diretoria executiva e a política financeira são relacionadas à performance econômica. Surpreendentemente, o capital votante e a remuneração da diretoria executiva são negativamente relacionados à performance. Observa-se, também, que a medida de performance econômica utilizada faz diferença no estudo dos mecanismos de Governança Corporativa, pois aquelas puramente contábeis não apresentaram qualquer relação com os mecanismos testados. Este estudo, com esta abrangência de mecanismos, variáveis e período tratado, está dentre os estudos empíricos de Governança Corporativa pioneiros no Brasil. Espera-se oferecer uma contribuição aos acadêmicos interessados no assunto, bem como a acionistas, gestores, analistas de mercado, consultores, administradores de Bolsa de Valores, órgãos reguladores e associações de classe. / Up until twenty years go, the term Corporate Governance didnt exist in the English language. The codes of good practices of Corporate Governance began to arise in the early nineties in England, in the United States and in Canada, as an answer to an unsatisfactory performance of leading companies - recognized as a deficiency of effectiveness in the board of directors and also as an answer to the pressures exerted by institutional investors. In Brazil, the term Corporate Governance is still more recent, but begins to be pondered and to deserve attention of researchers, of Stock Exchanges and associations. This study aims to identify possible relationship among independent variables, representative of Corporate Governance mechanisms, and measures of economic performance of enterprises of the Brazil Index IBX of the São Paulo Stock Exchange BOVESPA, with data referring to the period comprehended between 1997 and 2001. Using the statistic technique of panel data, model of error components, we work with 16 independent variables representing the Corporate Governance mechanisms: concentration of propriety (5 variables), characteristics of the board of directors (3 variables), voting capital (1 variable), remuneration of the executive directorate (2 variables), financial policy (3 variables), internal control (1 variable), and one more control variable, representing the size of the enterprises. These variables are regressed against each one of the five variables of the studied economic performance measures. Such variables have measured up the Market Value Added, the market to book value price ratio, TOBINS Q, profitability over the assets and profitability over the net equity. The results indicate that the property concentration, the voting capital, the remuneration of the executive directorate and the financial policy are related to the economic performance. Surprisingly, the voting capital and the remuneration of the executive directorate are negatively related to performance. We can also observe that the economic performance measure utilized makes difference in the study of the Corporate Governance mechanisms, because that ones purely accountants doesnt have any relation with the mechanisms tested. This study, comprising such diverse mechanisms, variables and also the observed period, is among the leading empiric studies of Corporate Governance in Brazil. We hope to offer a contribution to the academics holding an interest in the matter, as well as to shareholders, managers, market analysts, consultants, Stock Exchange administrators, regulating bodies and class associations.

O presente trabalho tem por objeto o estudo do instituto da incorporação de ações. Para tanto, será analisado, (i) no primeiro capítulo, o regime legal vigente e sua natureza jurídica, apresentando-se as diferenças em relação à operação de incorporação de sociedade, fazendo inclusive um contraste com o direito norte-americano; (ii) no segundo capítulo, a proteção dos acionistas minoritários em operações de incorporação de controlada e eventual impedimento de voto do acionista controlador, analisando-se os recentes pareceres de orientação emitidos pela CVM; (iii) no terceiro capítulo, o estudo do instituto do tag along e do fechamento de capital e necessidade de realização de oferta pública em operações de incorporação de ações que impliquem transferência de controle ou cancelamento de registro de companhia aberta, à luz das últimas operações realizadas no mercado; (iv) no quarto capítulo, a discussão dos principais precedentes nos quais a CVM decidiu impor restrições ou impedir a realização de operações de incorporação de ações por entender ter havido um tratamento não equitativo entre os acionistas minoritários e controladores, com o objetivo de demonstrar a alteração do comportamento do órgão regulador no decorrer dos anos / The present work aims the study of the stock-for-stock exchange transactions (incorporação de ações). For this purpose, it will be examined (i) in the first part, the current legal regime and legal nature, contemplating differences with the statutory merger (incorporação de sociedade), including a comparison with the US law, (ii) in the second part, the protection of minority shareholders in the context of parent-subsidiary mergers and possible exclusion from voting of the controlling shareholder, taking into account the recent opinions issued by the Brazilian Securities and Exchange Commission (CVM), (iii) in the third part, the study of the tag along rights and the regulation for delisting companies and the need to conduct a tender offer in stock-for-stock exchange transactions involving transfer of control or delisting of a publicly-held company in light of recent transactions, and (iv) in the fourth part, the discussion of the key precedents on which CVM has decided to impose restrictions or prevent the conduct of stock-for-stock transaction under the understanding that there was inequitable treatment of minority shareholders and controlling shareholders, in order to demonstrate the change of the CVMs understanding over the years.

本研究考慮重要且對台股大盤指數走勢有連動影響的因素，主要納入對台股有領頭作用的美國三大股市，那斯達克(NASDAQ)指數、道瓊工業(Dow Jones)指數、標準普爾500(S&P500)指數;其他對台股緊密連動效果的國際股票市場，香港恆生指數、上海證券綜合指數、深圳證券綜合指數、日經225指數;以及納入左右國際經濟表現的國際原油價格走勢，美國西德州原油、中東杜拜原油和歐洲北海布蘭特原油;在宏觀經濟因素方面則考量失業率、消費者物價指數、匯率、無風險利率、美國製造業重要指標的存貨/銷貨比率、影響貨幣數量甚鉅的M1B;在技術分析方面則納入多種重要的指標，心理線 (PSY) 指標、相對強弱(RSI) 指標、威廉(WMS%R) 指標、未成熟隨機(RSV) 指標、K-D隨機指標、移動平均線(MA)、乖離率(BIAS)、包寧傑%b和包寧傑帶狀寬度(BandWidth%);所有考量因素共計35項，因為納入重要因子比較多，所以完備性較高。 本研究先採用的贏者全拿(Winner-Take-All) 競爭學習策略的自組織映射網路(Self-Organizing Feature Maps, SOM)，藉由將相似資料歸屬到已身的神經元萃取出關聯分類且以計算距離來衡量神經元的離散特徵，對於探索大量且高維度的非線性複雜特徵俱有優良的因素相依性投射效果，將有利於提高預測模式精準度。在線性擬合部分則結合倒傳遞(Back-Propagation, BP)、Elman反饋式和徑向基底函數類網路(Radial-Basis-Function Network, RBF)模式為指數預測輸出，並對台股加權指數隔日收盤指數進行預測和評量。而在傳統的Elman反饋式網路只在隱藏層存在反饋機制，本研究則在輸入層和隱藏層皆建立反饋機制，將儲存在輸入層和隱藏層的過去時間資訊回饋給網路未來參考。在徑向基底函數網路方面，一般選取中心聚類點採用隨機選取方式，若能有效降低中心點個數，可降低網路複雜度，本研究導入垂直最小平方法以求取誤差最小的方式強化非監督式學習選取中心點的能力，以達到網路快速收斂，提昇網路學習品質。 研究資料為台股指數交易收盤價，日期自2001/1/2，至2011/10/31共2676筆資料。訓練資料自2001/1/2至2009/12/31，共2223筆;實證測試資料自2010/1/4至2011/10/31，計453個日數。主要評估指標採用平均相對誤差(AMRE)和平均絕對誤差 (AAE)。在考慮因子較多的狀況下，實證結果顯示，在先透過SOM進行因子聚類分析之後，預測因子被分成四個組別，分別再透過BP、Elman recurrent和RBF方法進行線性擬合，平均表現方面，以RBF模式下的四個群組因子表現最佳，其中RBF模式之下的群組4，其AMRE可達到0.63%，最差的AMRE則是群組1，約為1.05%;而Elman recurrent模式下的四組群組因子之ARME則介於1.01%和1.47%之間;其中預測效果表現最差則是BP模式的預測結果。顯示RBF具有絕佳的股價預測能力。最後，在未來研究建議可以運用本文獻所探討之其他數種類神經網路模式進行股價預測。 / In this study, we considering the impact factors for TWSE index tendency, mainly aimed at the three major American stock markets, NASDAQ index, Dow Jones index, S&P 500, which leading the Taiwan stock market trend; the other international stock markets, such as the Hong Kong Hang-Seng Index, Shanghai Stock Exchange Composite Index, Shenzhen Stock Exchange Composite Index, NIKKEI 225 index, which have close relationship with Taiwan stock market; we also adopt the international oil price trend, such as the West Texas Intermediate Crude Oil in American, the Dubai crude oil in Middle Eastern, North Sea Brent crude oil in European, which affects international economic performance widely; On the side of macroeconomic factors, we considering the Unemployed rate, Consumer Price Index, exchange rate, riskless rate, the Inventory to Sales ratio which it is important index of American manufacturing industry, and the M1b factor which did greatly affect to currency amounts; In the part of Technical Analysis index, we adopt several important indices, such as the Psychology Line Index (PSY), Relative Strength Index (RSI), the Wechsler Memory Scale—Revised Index (WMS%R), Row Stochastic Value Index (RSV), K-D Stochastics Index, Moving Average Line (MA), BIAS, Bollinger %b (%b), Bollinger Band Width (Band Width%);All factors total of 35 which we have considered the important factor is numerous, so the integrity is high. In this study, at first we adopt the Self-Organizing Feature Maps Network which based on the Winner-Take-All competition learning strategy, Similar information by the attribution to the body of the neuron has been extracted related categories and to calculate the distance to measure the discrete characteristics of neurons, it has excellent projection effect by exploring large and complex high-dimensional non-linear characteristics for all the dependency factors , would help to improve the accuracy of prediction models, would be able to help to improve the accuracy of prediction models. The part of the curve fitting combine with the back-propagation (Back-Propagation, BP), Elman recurrent model and radial basis function network (Radial-Basis-Function Network, RBF) model for the index prediction outputs, forecast and assessment the next close price of Taiwan stocks weighted index. In the traditional Elman recurrent network exists only one feedback mechanism in the hidden layer, in this study in the input and hidden layer feedback mechanisms are established, the previous information will be stored in the input and hidden layer and will be back to the network for future reference. In the radial basis function network, the general method is to selecting cluster center points by random selection, if we have the effectively way to reduce the number of the center points, which can reduces network complexity, in this study introduce the Orthogonal Least Squares method in order to obtain the smallest way to strengthen unsupervised learning center points selecting ability, in order to achieve convergence of the network fast, and improve network learning quality. Research data for the Trading close price of Taiwan Stock Index, the date since January 2, 2001 until September 30, 2011, total data number of 2656. since January 2, 2001 to December 31, 2009 a total number of 2223 trading close price as training data; empirical testing data, from January 4, 2010 to September 30, 2011, a total number of 433. The primary evaluation criteria adopt the Average Mean Relative Error (AMRE) and the Average Absolute Error (AAE). In the condition for consider more factors, the empirical results show that, by first through SOM for factor clustering analysis, the prediction factors were divided into four categories and then through BP, Elman recurrent and RBF methods for curve fitting, at the average performance , the four group factors of the RBF models get the best performance, the group 4 of the RBF model, the AMRE can reach 0.63%, the worst AMRE is group 1, about 1.05%; and the four groups of Elman recurrent model of ARME is between 1.01% and 1.47%; the worst prediction model is BP method. RBF has shown excellent predictive ability for stocks index. Finally, the proposal can be used in future studies of the literatures that we have explore several other methods of neural network model for stock trend forecasting.