The purpose of this thesis is to design and fabricate the S-shaped profile in depth. The results are applied to design a beam expander. In the experiments, we use the local etch-rate control, i.e. diffusion-limited etching, to fabricate the S-shaped profile. The etchant solution and recipe is H3PO4:H2O2:H2O =98:1:1 at 21¢J without stirring. The diffusion length of the etchant solution is 12.5mm. The device includes active semiconductor laser and passive tapered waveguide (beam expander). The design of the passive waveguide includes the lateral and vertical directions. In the lateral aspect, we use FimmWave to simulate the best symmetrical far field angle. When the waveguide width is 2.5mm and the etching depth is 1.4mm, we can get the best symmetrical far field angle which is lateral 27.88¢X and vertical 27.76¢X. In the vertical aspect, we use diffusion-limited etching to fabricate the depth changing. In this thesis, we use the beam expander length 350, 400, 450, 500mm.

Zugl.: Potsdam, Univ., Diss., 2008/2009

Thesis (doctoral)--Universität Freiburg in der Schweiz.

Thesis (doctoral)--Universität Frankfurt am Main, 1973. / Includes bibliographical references (p. v-xviii).

Zugl.: Jena, Univ, Diss., 2008

Thesis (M.Mous.Man.)--University of Hong Kong, 2009. / Includes bibliographical references (p. 113-116).

M.Comm. / Iscor is the largest iron and steel producer in Africa in terms of crude steel per anum (Bloomberg, 1999). Iscor has two main divisions namely the Mining division and Steel division. The Mining division is responsible for the mining of the raw materials such as iron ore, coal and dolomite. Some of these raw materials are exported and the rest is supplied to the Steel division. Approximate 8,9 million tons of iron ore is exported annually (McKic, 1999). The Steel division converts the iron ore into iron pigs, steel and finish hot and cold rolls at the Newcastle and VanderBijlpark Works. During the financial year ending June 1998 Iscor produced 6,5 million tons of crude steel (Alberts, 1999). The question is sometimes asked; why are some companies able to turn their ideas into appropriate actions, thereby creating a competitive advantage resulting in superior performance? The answer is that successful companies have the specific identities, attitudes, competencies and sets of values and beliefs not possessed by other companies. These attributes of winning companies are collectively known as organisational culture. Organisational culture exists in every organisation and can be either positive and/or negative. One of management's focuses is to change the existing organisational culture into the ideal organisational culture applicable to specifically that organisation. The process of change should be implemented over an extended period of time.

The bequest of a usufruct to one or more interim usufructuaries for a limited period after the decease of the first usufructuary is often utilised by estate planners to reduce the value of the ceasing limited interest and thus to effect a saving in respect of estate duty. The saving in respect of estate duty is effected due to the fact that - the value of the ceasing limited interest in the estate of the first usufructuary is calculated only over the duration of the period during which the interim usufructuary is entitled to the limited interest and not also over the life expectancy of the ultimate beneficiary, and - that, on the cessation of the interim usufruct due to the efflux of time. no estate duty is payable. The very first reference to this method appeared in an article published in The Taxpayer during 1965. Other authors like Meyerowitz, Silke and Stein and Davis, Beneke and Jooste also referred to this method without analysing it or investigating the legality thereof. All the aforementioned authors relied to a certain extent for their views on a judgment of acting judge Warner in Bassett v Commissioner for Inland Revenue (1 961 4 SA 769 (D)). This dissertation is therefore aimed at investigating the legality of the method and to focus on a few practical aspects regarding the application thereof as an estate planning instrument. An analysis of the wording of the charging clause (section II (a )(1) of the Estate Duty Act and the valuation clause (section 5(1) of the act) has led to the belief that, in considering the validity of the method, it is extremely important to bear in mind the principles applicable to the vesting of testamentary rights. In terms of the valuation clause of the Estate Duty Ad the value of a ceasing limited interest for estate duty purposes is determined by capitalising the annual value of the right of enjoyment of the properly in which the deceased held any such limited interest to the extent to which the person who, upon the cessation of the said interest of the deceased in consequence of the death of the deceased, becomes entitled to any right of enjoyment of such properly. In terms of the charging clause "the person to whom any advantage accrues by the death of the deceased" is liable for the payment of estate duty in respect of the cessation of a limited right. In order to calculate the value of a ceasing limited interest and to determine the liability for payment of estate duty in respect thereof it is necessary to determine (a) the extent to which a successor in title of a deceased in consequence of the death of the deceased has become entitled to any right of enjoyment, and (b) to which person any advantage has accrued by the death of the deceased. After analysing the wording of section 5(1)(b) and section 11(a)(1) the writer has come to the following conclusions: (a) In the case of an interim usufruct the right of enjoyment of the first usufructury has to be capitalised only over the period of currency of the interim usufruct and not also over the life expectancy of the owner of the nuda proprietas. (b) Subsection 5(l)(b) does not make provision for the valuation of an interim usufruct at the termination them due to the efflux of time. (c) Upon the decease of the first usufructuary an advantage as contemplated in section 11(a)(1) accrues to the interim usufructury but not to the owner of the nuda proprietas. (d) On the cessation of an interim usufruct due to the efflux of time there is no person to whom any advantage accrues by the death of a deceased as contemplated in subsection 11 (a)(1), and consequently the owner of the nuda proprietas does not at that stage incur any liability for estate duty. In view of the aforegoing considerations the writer has come to the conclusion that the utilisation of this method does not constitute a contravention the provisions of the Estate Duty Ad. The artificiality of the valuation method prescribed in terms of subsection 5(1)(b) lends itself to reducing the value of a limited interest by interposing a successor for a short period between the deceased and the ultimate beneficiary. It follows therefore that the utilisation of this method does not constitute tax evasion. Where the main consideration for the appointment of an intermediary usufructuary is not so much the possible benefit that may acme to the intermediary as the limitation of estate duty, the application of the method may constitute an avoidance of estate duty. The Estate Duty Act, however, does not contain any general anti-avoidance provision similar to section 103 of the lncome Tax Act. In utilising this method estate planners should therefore bear in mind the possibility that the fiscus may sooner or later introduce an amendment to the Estate Duty Act to close this loophole. / Thesis (LL.M. (Estate Law))--North-West University, Potchefstroom Campus, 2004.

The bequest of a usufruct to one or more interim usufructuaries for a limited period after the decease of the first usufructuary is often utilised by estate planners to reduce the value of the ceasing limited interest and thus to effect a saving in respect of estate duty. The saving in respect of estate duty is effected due to the fact that - the value of the ceasing limited interest in the estate of the first usufructuary is calculated only over the duration of the period during which the interim usufructuary is entitled to the limited interest and not also over the life expectancy of the ultimate beneficiary, and - that, on the cessation of the interim usufruct due to the efflux of time. no estate duty is payable. The very first reference to this method appeared in an article published in The Taxpayer during 1965. Other authors like Meyerowitz, Silke and Stein and Davis, Beneke and Jooste also referred to this method without analysing it or investigating the legality thereof. All the aforementioned authors relied to a certain extent for their views on a judgment of acting judge Warner in Bassett v Commissioner for Inland Revenue (1 961 4 SA 769 (D)). This dissertation is therefore aimed at investigating the legality of the method and to focus on a few practical aspects regarding the application thereof as an estate planning instrument. An analysis of the wording of the charging clause (section II (a )(1) of the Estate Duty Act and the valuation clause (section 5(1) of the act) has led to the belief that, in considering the validity of the method, it is extremely important to bear in mind the principles applicable to the vesting of testamentary rights. In terms of the valuation clause of the Estate Duty Ad the value of a ceasing limited interest for estate duty purposes is determined by capitalising the annual value of the right of enjoyment of the properly in which the deceased held any such limited interest to the extent to which the person who, upon the cessation of the said interest of the deceased in consequence of the death of the deceased, becomes entitled to any right of enjoyment of such properly. In terms of the charging clause "the person to whom any advantage accrues by the death of the deceased" is liable for the payment of estate duty in respect of the cessation of a limited right. In order to calculate the value of a ceasing limited interest and to determine the liability for payment of estate duty in respect thereof it is necessary to determine (a) the extent to which a successor in title of a deceased in consequence of the death of the deceased has become entitled to any right of enjoyment, and (b) to which person any advantage has accrued by the death of the deceased. After analysing the wording of section 5(1)(b) and section 11(a)(1) the writer has come to the following conclusions: (a) In the case of an interim usufruct the right of enjoyment of the first usufructury has to be capitalised only over the period of currency of the interim usufruct and not also over the life expectancy of the owner of the nuda proprietas. (b) Subsection 5(l)(b) does not make provision for the valuation of an interim usufruct at the termination them due to the efflux of time. (c) Upon the decease of the first usufructuary an advantage as contemplated in section 11(a)(1) accrues to the interim usufructury but not to the owner of the nuda proprietas. (d) On the cessation of an interim usufruct due to the efflux of time there is no person to whom any advantage accrues by the death of a deceased as contemplated in subsection 11 (a)(1), and consequently the owner of the nuda proprietas does not at that stage incur any liability for estate duty. In view of the aforegoing considerations the writer has come to the conclusion that the utilisation of this method does not constitute a contravention the provisions of the Estate Duty Ad. The artificiality of the valuation method prescribed in terms of subsection 5(1)(b) lends itself to reducing the value of a limited interest by interposing a successor for a short period between the deceased and the ultimate beneficiary. It follows therefore that the utilisation of this method does not constitute tax evasion. Where the main consideration for the appointment of an intermediary usufructuary is not so much the possible benefit that may acme to the intermediary as the limitation of estate duty, the application of the method may constitute an avoidance of estate duty. The Estate Duty Act, however, does not contain any general anti-avoidance provision similar to section 103 of the lncome Tax Act. In utilising this method estate planners should therefore bear in mind the possibility that the fiscus may sooner or later introduce an amendment to the Estate Duty Act to close this loophole. / Thesis (LL.M. (Estate Law))--North-West University, Potchefstroom Campus, 2004.

Revisionsplikten slopades 1 november 2010 i Sverige, vilket innebar att mindre aktiebolag som inte uppfyller vissa krav blev fria från revision. Efter slopandet av revisionsplikten har det skett ständiga debatter mellan olika parter över detta beslut. Somliga parter ser det utifrån en positiv aspekt, medan andra ur en negativ aspekt. Den höga kostnaden som revision avlämnar är en faktor till att flertal mindre aktiebolag väljer att inte anlita en revisor, främst hos nystartade aktiebolag. Studiens syfte är att undersöka varför mindre aktiebolag vänder sig till revision och använder sig av den även om de inte omfattas av revisionsplikt. Samt identifiera vilka önskvärda konsekvenser och icke önskvärda konsekvenser frivillig revision medför utifrån aktiebolagets synvinkel och utifrån institutionell teori. För att svara på studiens syfte har vi tillämpat oss av en kvalitativ metod, eftersom vi anser att den kan tillämpas för vårt arbete på bästa sätt. Frågeställningarna kommer sedan besvaras genom semistrukturerade intervjuer som görs med nio olika aktiebolag inom Sverige. Slutsatsen som kan dras är att de flesta aktiebolagen på marknaden har varierande synpunkter och åsikter kring revision samt slopandet av revisionsplikten. Utifrån våra intervjuer kan vi dra slutsatsen att det förekommer fler positiva kommentarer om revision än negativa. Det som ansågs vara bra med revision var att företagare får mer kontroll över bolaget samt att de får väldigt bra rådgivning som kan leda till en ekonomisk utveckling för bolagen. Utifrån revisorernas perspektiv har det förekommit en försämring på årsredovisningar, men även att det har skett en ökning av ekonomisk brottslighet. Det som de flesta bolagen gemensamt ansåg vara det stora problemet med revision var den höga kostnaden. Många av bolagen ansåg inte det som en nödvändig respektive värd investering, utan ansåg att likviditeten kan användas för något bättre. / The audit obligation was abolished on 1 November 2010 in Sweden, which meant that smaller limited companies that did not meet certain requirements were exempted from auditing. Following the abolition of the audit obligation, there have been constant debates between different parties over this decision. Some parties see it from a positive aspect, while others from a negative aspect. The high cost of auditing is a factor that several smaller limited companies choose not to hire an auditor, mainly with newly started limited companies. The purpose of the study is to investigate why smaller limited companies turn to auditing and use it even if they are not subject to auditing obligations. But also identify what desirable consequences and undesirable consequences voluntary audit entails from the company's point of view and from institutional theory. To answer the purpose of the study, we have applied a qualitative method, as we believe that it can be applied to our work in the best way. The questions will then be answered with semi-structured interviews conducted at several different limited companies in Sweden. The conclusion that can be drawn is that most limited companies in the market have varying views and opinions on auditing and the abolition of the auditing obligation. Based on our interviews, we can conclude that there are more positive comments about auditing than negative ones. What was considered good about auditing was that entrepreneurs get more control over the company and that they get very good advice that can lead to financial development for the companies. From the auditors' perspective, there has been a deterioration in annual reports, but also that there has been an increase in financial crime. What most companies jointly considered to be the major problem with auditing was the high cost. Many of the companies did not consider it a necessary or worthwhile investment, but considered that liquidity could be used for something better.