Hugh Tracey memorial service
- Authors: (a) Phyllida Wentzel (Speaker) , (b) Irene Frongs (Speaker and Performer) , Tracey, Andrew T N
- Date: 1977
- Subjects: Tracey, Hugh , Memorial service , Guitar , Sub-Saharan African music , Africa South Africa Saronde Farm f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/113474 , vital:33780 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC131b-09
- Description: (a) Reading of Hugh Tracey's Christmas Card printed for him two months ago and the read verse was an extract from the book 'Faith of an artist' , (b) Irene Frongs former Greek student friend singing an ancient lullaby with guitar accompaniment in tribute to Hugh Tracey of work almost forgotten in Greece, this emanating from Hugh Tracey who encouraged her to do the Greek background and its heritage for her thesis
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- Date Issued: 1977
A linguistic account of quantifiers in English and their place in the development of some modern approaches to syntax and semantics
- Authors: Aldridge, Maurice Vincent
- Date: 1977
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:20966 , http://hdl.handle.net/10962/5707
- Description: From Introduction: I should make it clear from the outset that I have no intention of trying to construct a calculus for the quantificational system of English as a natural language. My interests are purely linguistic with special emphasis on that part of the discipline traditionally known as semantics. Thus, although I offer a miniature survey of the development of quantificational studies in Philosophy in Chapter One, and have frequent recourse, in other charters, to observations made by philosophers, especially Quine, I make no attempt whatever to emulate the logicians by constructing such things as rules of inference. I have also tried to avoid symbolic representations except in those cases in which they show up aspects of semantic structure very clearly, and where I have symbolised, I have alternated between the systems of Quine and Peano-Russell, selection in each instance being determined by judgements regarding clarity.
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- Date Issued: 1977
Hugh Tracey memorial service
- Authors: Andrew Tracey (Speaker) , Tracey, Andrew T N
- Date: 1977
- Subjects: Tracey, Hugh , Memorial service , Sub-Saharan African music , Africa South Africa Saronde Farm f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/112616 , vital:33626 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC129a-05
- Description: Andrew Tracey the son reiterating his father's and family close relationship with Daniel Mabuto and Tshabalala and made a significant note to the Tshabalala family and those gathered for memorial service that Tshabalala died exactly a year ago on 23 October 1976 before his father Hugh Tracey who passed away 22 October 1977
- Full Text: false
- Date Issued: 1977
Hugh Tracey memorial service
- Authors: Andrew Tracey (Speaker) , Tracey, Andrew T N
- Date: 1977
- Subjects: Tracey, Hugh , Memorial service , Sub-Saharan African music , Africa South Africa Saronde Farm f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/113389 , vital:33766 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC131b-05
- Description: Andrew Tracey the son reiterating his father's and family close relationship with Daniel Mabuto and Tshabalala and made a significant note to the Tshabalala family and those gathered for memorial service that Tshabalala died exactly a year ago on 23 October 1976 before his father Hugh Tracey who passed away 22 October 1977
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- Date Issued: 1977
Hugh Tracey memorial service
- Authors: Andrew Tracey and Paul Tracey , Tracey, Andrew T N
- Date: 1977
- Subjects: Tracey, Hugh , Memorial service , Mbira , Sub-Saharan African music , Africa South Africa Saronde Farm f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/112643 , vital:33631 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC129a-08
- Description: Playing of Kalimba by Andrew Tracey of his father's favourite tune, 'Jesu Joy' by Bach which never failed to amaze people
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- Date Issued: 1977
A new species of Tropheus (Pisces: Cichlidae) from Lake Tanganyika
- Authors: Axelrod, G S (Glen S.) , Rhodes University. J.L.B. Smith Institute of Ichthyology
- Date: 1977-11
- Subjects: Cichlids , Tropheus , Freshwater fishes -- Tanganyika, Lake
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/69803 , vital:29581 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 17 , Tropheus polli, a sp. nov. (Pisces: Cichlidae) from Lake Tanganyika, is described and compared with T. moorii Boulenger 1898, T. annectens Boulenger 1900, T. duboisi Marlier 1959, T. brichardi Nelissen & Thys 1975, and T. moorii kasabae Nelissen 1977. Included are detailed morphometric data with a figure and colour plate, a lower pharyngeal bone description with electron micrograph scans, and a type locality map.
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- Date Issued: 1977-11
Feeding ecology of the cichlid fish Sarotherodon Mossambicus in Lake Sibaya, KwaZulu
- Authors: Bowen, Stephen H
- Date: 1977
- Subjects: Cichlids -- Ecology , Fishes -- Ecology -- South Africa -- KwaZulu-Natal -- Sibaya, Lake
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5837 , http://hdl.handle.net/10962/d1009688 , Cichlids -- Ecology , Fishes -- Ecology -- South Africa -- KwaZulu-Natal -- Sibaya, Lake
- Description: The feeding of the cichlid fish Sarotherodon mossambicus in Lake Sibaya, KwaZulu, was studied in relation to various biotic and abiotic features of the l ake environment from January, 1973 to July, 1975. The primary goal of the study was to determine the cause of stunting and poor condition of adults in this population. Juvenile and adult S. mossambicus feed on a mixture of detritus, bacteria and diatoms that occurs as a flocculent layer on sand substrates throughout the lake. Concentrated gastric acid, commonly at pH values of 1.5 and lower, lyses diatoms and bacteria which are subsequently digested in the intestine. This is the first report of digestion of bacteria by a fish, and the nutritional significance of the finding is discussed. Juveniles feed predominantly on shallow sand terraces found along the margin of much of the lake, while adults usually feed in offshore waters at depths of 3 m and greater. Benthic floc from feeding areas of juveniles and adults have similar concentrations of organic matter, total carbohydrate, soluble carbohydrate and calories, but differ markedly in respect to diatom and protein concentration. Diatom concentrations are generally high in terrace floc but are consistently low in floc from deep water. Protein concentration of benthic floc decreases with increasing depth from 0 - 5 m. Partial correlation analysis shows that protein and diatom concentrations have no correlation independent. of their common relationship to depth, and the evidence implicates detrital bacteria as the primary source of protein in benthic floc. Probable causes of the observed distributions of diatoms and protein are discussed. The protein content of benthic floc profoundly influences its nutritional value. A comparison with available data on animal nutrition shows that the ratio of digestible protein to digestible energy in floc in the shallows is high enough that this food resource would be expected to support good growth, but the ratio for deep water floc is so low that it would be expected to result in conspicuous malnutrition. Thus, inadequate dietary protein is identified as the principal cause of stunting and poor condition of adult S· mossambicus in Lake Sibaya; It is argued that the ratio of digestible protein to digestible calories can be expected to determine the food value of particulate organic matter that includes amorphous detritus in other ecosystems. Despite stunting and poor condition of adults, S. mossambicus are abundant in Lake Sibaya. The precocious breeding of this population is discussed as an adaptation that allows it to maximize reproductive output given the limited resources available to adults. Juvenile S. mossambicus perform daily movements from deep water onto the terraces where they feed and then back into deep water. During periods of relatively low lake level when terrace waters were usually less than 1.5 m deep (1-73 to 1-74), juveniles were present on the terrace throughout daylight hours. At relatively high lake levels (7-74 to 8-75), juveniles were present on the terraces for only about five hours following sunset. Periods of heavy wave action interrupt feeding activity and result in reduced numbers of fish in terrace waters. The possible roles of predator avoidance and temperature in determination of daily feeding behavior are discussed. Daily energy assimilation by juveniles, estimated by a field technique, is approximately 115 cal per g fish dry weight.
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- Date Issued: 1977
Explanation of the geological map of the country east of Kariba
- Authors: Broderick, T J
- Date: 1977
- Subjects: Geology -- Kariba, Lake (Zambia and Zimbabwe) -- Maps , Geology -- Kariba, Lake (Zambia and Zimbabwe)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5075 , http://hdl.handle.net/10962/d1014650
- Description: The area covers part of the western end of the Zambezi Metamorphic Belt as it is known in Rhodesia. Most of the rocks are paragneisses of various ages that have suffered a long and complex history which has taken them into the highest facies of metamorphism and into the realm of granitization. Only the Karoo sediments of the Zambezi Valley are unaffected by these metamorphic events. From the scanty geochronological results obtainable from the north of Rhodesia, the history of this area started more than 2 500 million years ago. In the east and south-east of the mapped area are a group of highly migmatized granitic gneisses which represent a continuation westwards of similar rocks found in the area described in Bulletin 51 by Wiles (1961}. These Urungwe Paragneisses are regarded as forrning the basement on which all other rocks in the area lie, although their relationship with the Basement Complex is unknown. Climatically Kariba is hot and humid. Mean summer temperatures average 30°C (86°F), with temperatures in October that often exceed 40°C (100°F). Away from the Lake the humidity decreases and the increased altitudes above the Escarpment have a cooling effect. The township's mean annual rainfall is 665 millimetres (26,2 inches), most of which falls in the months between November and February. Basically. the area is well timbered but population pressures in the tribal areas, and depredation by elephants elsewhere, have made serious inroads upon the natural vegetation. The gneissic terrain above the Escarpment is characterized by mufuti trees (Brachystegia boehmiz). The baobab (Adansonia digitata) is common in the larger river valleys and in the low-lying area surrounding the lake shore where it occurs together with mopane (Colophospermum mopane) and thick jessie bush. In the river valleys, trees typical of the Zambezi Valley are common and include the tamarind (Tamarindus indica), mumvey (Kigelia africana) and Steculia species. Buffalo beans (Mucuma coriacea) are not uncommon in grassy river-beds. Physiographically, the area can be subdivided into three distinct regions, all of which have a marked geological control. They are- (1) The fault-lined Gwembe trough which has subsequently been inundated by the waters of Lake Kariba to an average altitude of 487 metres (1 600 feet) above sea level since the completion of the dam across the upstream entrance to the Kariba Gorge in 1960. The fiat land that now forms part of the lake shore is underlain by sediments of Karoo age and these, in the mapped area, occupy the Charara and Gachegache Basins, that lie to the north and south respectively of the Msango Range. These fiat-lying areas give way sharply to the gneissic terrain of the Zambezi Metamorphic Belt along the fault-lined Zambezi Escarpment. (2) The northern boundary of the area and the Msango Range are underlain by metasediments of the Makuti Group. The relief is strongly influenced by the regional geological structure of these complexly folded rocks with resistant meta-arkose and quartzite forming the sharp ridges and metapelites occupying the valleys. The ridges and valleys trend eastwards in the Msango Range, but along the northern boundary they trend north-westwards. (3) The linear topographic features of the Makuti Group terrain give way southwards to the older gneisses along an abrupt scarp edge, the base of which is marked by the Tsororo River. This terrain of gneisses is very rugged and highly dissected above the Zambezi Escarpment until it flattens out, at about 900 metres (2 950 feet) above sea level, into the Urungwe Tribal Trust Lands. In the rugged country above the Escarpment, granulites of the Piriwiri Group stand out above the gneisses as steep-sided conical bills. The country rises in a series of fault-lined steps to its highest point, at Nyamangwe trigonometrical beacon, which stands at 1 336 metres (4 382 feet) above sea level.
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- Date Issued: 1977
The biology of Clarias Gariepinus (Burchell, 1822) in Lake Sibaya, Kwazulu, with emphasis on its role as a predator
- Authors: Bruton, Michael N
- Date: 1977
- Subjects: Catfishes -- South Africa -- KwaZulu-Natal -- Lake Sibaya. , Clarias , Clariidae
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: vital:5886 , http://hdl.handle.net/10962/d1013313
- Description: Aspects of the biology of the sharptooth catfish, Clarias gariepinus (Burchell, 1822) were studied in a clear coastal lake (Lake Sibaya, KwaZulu.). Catfish reach maturity towards the end of the first year (total length 200-250mm) and breed in summer. Gonadal maturation is cyclical, and most fishes are ripe between September. and January e ach year. Maturation stages and fecundity are described. Twenty-two catfish spawning runs were witnessed. There were no large aggregations of catfish before the Summer rains, as reported in some impoundments and rivers, but catfish accumulated on the shallow terrace immediately before a spawning run. Spawning usually took place in flooded marginal areas after heavy rain on dark calm nights. Peak activity occurred between 20h00 and 02h30. Pre-nuptial aggression, courtship and mating are described and illustrated in detail for the first time from field observations. Gonadal products are released while in amplexus and fertilized externally. The eggs have an adhesive disc for attachment to plants, and develop rapidly. Early development and feeding are described. The growth rate of catfish was determined using rings on the pectoral spines, and validated using recent techniques. C.gariepinus in Lake Sibaya grow rapidly and remain in good condition to a length of 500mm, but larger catfish have a poor growth rate and condition, and few exceed 650mm. The modal length and weight of the Sibaya population is intermediate between that of other populations but the number and condition of larger catfish in Lake Sibaya is lower. Other studies on C.gariepinus growth are reviewed. Very high and low first year increments obtained previously may be due to methodological errors, but catfish do appear to have variable growth rates. The size reached by C.gariepinus is reviewed. Catfish are equipped morphologically and behaviourally to feed on a wide variety of·prey in different situations, but they usually feed at night on exposed, active benthic organisms. Social hunting facilitates the capture of prey which is too fast or manoevrable for a single predator. Food preferences are scored by three different methods and presented for the total catfish population and for different length groups, seasons, and habitats. Juveniles feed more often and on a greater variety of prey, and their condition is better than that of adults. The proportions of several food items in the diet changed at different lake levels as marginal areas became inundated. In particular, increasing lake levels resulted in a change in relative density of three cichlid prey in the shallow water feeding area of catfish. This situation provided the opportunity to study the effect of changing cichlid density on predation by catfish. The world literature on factors influencing the predator-prey relationship in fish is reviewed and several key factors are identified. The interaction of fish predators and prey in Africa, and particularly Lake Sibaya, is examined in detail, and prey density, modified by accessibility, is found to be an important factor. The effect of cichlid prey density on catfish predation was therefore investigated using field collections and experimental observations. Catfish prey on the cichlid species with greatest relative abundance, with some deviations which can be explained in terms of accessibility. The experimental results also describe feeding periodicity, imitative hunting and the effect of water depth , day-night light intensity changes and predator number on predation efficiency on cichlids. Catfish predation is discussed in terms of recent predation theory, and it is concluded that their ability to switch from one prey to another as prey availability (= density+ accessibility) changes , is an an important aspect of their success as predators. Catfish predate more efficiently on invertebrates, but feed largely on fishes after the first year. This preference for fish prey is probably related to food quality, as fishes contributed over 75% of the energy content of all ingested food, as well as abundant protein and the correct amino acid balance. Finally, I conclude that the role of C.gariepinus as a predator on S.mossambicus is three-fold: (a) to enhance species' fitness by removing enfeebled individuals i.e. to act as a 'cleanser' (b) to restrict the distribution of prey under certain conditions i.e. act as a 'restricter' (c) to dampen fluctuations in cichlid abundance i.e. act as a 'regulator'. The relative importance of these roles may alter at different lake levels in Lake Sibaya in response to changes in the vulnerability of fish prey.
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- Date Issued: 1977
Pitch learning and the implications for music education
- Authors: Byrd, Audrey S
- Date: 1977
- Subjects: Musical pitch -- Instruction and study
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2627 , http://hdl.handle.net/10962/d1001867
- Description: A study of pitch learning must outline first the procedures involved in such learning and then identify specific factors appearing to influence the learning of pitch. Once identified, each factor can then be evaluated by controlled experiment before confirming its influence. Since it is what is heard and perceived that is learnt, I have started with the process of Hearing and Perceiving, for as Arnold Abramovitz, Senior Lecturer in Psychology at Cape Town says, “the reception, processing and interpretation of acoustic symbols constitutes some of the most elusive and complex phenomena to attempt to examine, gauge and measure, due partly to the transient, ephemeral nature of sound itself.”
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- Date Issued: 1977
Pitch learning and the implications for music education
- Authors: Byrd, Audrey S
- Date: 1977
- Subjects: Musical pitch -- Instruction and study
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2675 , http://hdl.handle.net/10962/d1007403
- Description: From introduction: A study of pitch learning must outlina first the procedures involved in such learning ar~d then identify specific factors appearing to influence the learning of pitch. Once identified, each factor can then be evaluated by controlled experiment before confirming its influence. Since it is \'lhat is heard and perceived that is learnt, I have started with the process of Hearing and Perceiving, for as Arnold Abramovitz, Senior Lecturer in Psychology at Cape Town says, "the reception, processing and interpretation of acoustic symbols constitutes some of the most elusive and complex phenomena to attempt to examine, gauge and measure, due partly to the transient, ephemeral nature of sound itself."
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- Date Issued: 1977
South African art, the romantic principle and the Grahamstown group
- Authors: Clark, George Phillip Haven
- Date: 1977
- Subjects: Art, South African , Art -- South Africa -- Grahamstown
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2501 , http://hdl.handle.net/10962/d1014638
- Description: The purpose of this essay is to examine the "rumblings in the belly of Leviathan from which we are able to diagnose his disease" (Comfort). Adopting a cyclical idea of art, it aims to point out that South African art has degenerated to a state where the much publicised so-called leaders of art are simply using charm techniques to woo the consent of a society whose metaphysics are derived from twentieth century collective materialism. The South African situation is examined, as is the Romantic principle underlying all genuine artistic activity. It is proposed that the cure lies in a reinstatement of this principle and in a readjustment of the concepts of reality and unreality. Finally, the Grahamstown Group is propounded as an embodiment of the Romantic principle with its implicit concept of artistic reality.
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- Date Issued: 1977
Some aspects of the theory, application, and computation of generalised inverses of matrices
- Authors: Cretchley, Partricia C
- Date: 1977
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/6212 , vital:21063
- Description: The idea of generalising the classical notion of the inverse of a non-singular matrix arose as far back as in 1920, but it was not until the late fifties that the development of the theory gained any impetus. Since then , as is the case in the development of many new concepts , work done in parallel in various parts of the world has resulted in a great deal of untidiness in the literature : confusion over terminology , and even duplication of theory. More recently, however, some attempts have been made to bring together people active in the field of generalised inverses, in order to reach consensus on some aspects of definition and terminology, and to publish more general works on the subject. Towards this purpose, a symposium on the theory and application of generalised inverses of matrices was held in Lubbock, Texas, and its proceedings published in 1968 (see [25] ). A few other works of this nature (see [4], (19a] ) have appeared , but the bulk of the literature still comprises numerous diverse papers offering further ideas on the theoretical properties which these matrices have , and drawing attention to their application in areas of statistics , numerical analysis , filtering , modern control and estimation theory, pattern recognition and many others. This essay offers a look at generalised inverses in the following way: firstly a broad basis and background is established in the first three chapters to provide greater understanding of the motivation for the remaining chapters, where the approach then changes to become far more detailed. Within this general framework, Chapter 1 offers a brief glimpse of the history and development of work in the field. In Chapter 2 some of the most significant properties of these inverses are described, while in Chapters 3 and 4 and 5 attention is given to interesting and remarkable computational algorithms relating to generalised inverses (some well suited to machine processing). The material of Chapters 4 and 5 is largely due to Decell, Stallings and Boullion, and Tanabe, in [6], [24] and [27], respectively, while the source of material for the first three chapters is the literature generally, with Penrose's two papers providing a rough framework for Chapters 1 and 2 (see [17]).
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- Date Issued: 1977
The tightrope walker
- Authors: Dale, Jessie Patricial Dill
- Date: 1977
- Subjects: Art and religion , Art criticism
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2498 , http://hdl.handle.net/10962/d1013336
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- Date Issued: 1977
Hugh Tracey memorial service
- Authors: Davie Dargie and Zwelitsha Choral Society , Tracey, Andrew T N
- Date: 1977
- Subjects: Tracey, Hugh , Memorial service , Sacred music , Choral music , Sub-Saharan African music , Africa South Africa Saronde Farm f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/112833 , vital:33662 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC129b-13
- Description: Playing a recorded unaccompanied religous Xhosa choral song namely Sele ahom hymn selected in tribute for Hugh Tracey
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- Date Issued: 1977
Attitude and personal orientation differences between clergy of Anglican and Pentecostal denominations with particular reference to sexual ethics
- Authors: Davies, Alan Bruce
- Date: 1977
- Subjects: Clergy -- Sexual behavior Pentecostalism -- Sexual behavior Anglican Communion -- Clergy -- Sexual behavior Sex -- Religious aspects -- Christianity Christian ethics -- Anglican authors Sexual ethics
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1247 , http://hdl.handle.net/10962/d1011015
- Description: The introduction provides a concise discussion of the confused condition of our Western sexuality. It is noted that this confusion has also manifested itself in ecclesiastical circles, and that the contribution of the church towards the resolution of 'moral' confusion in this sphere is in fact minimal. The study then proceeds to a more empirical investigation of certain phenomena which might enable us to demonstrate the close relationship which exists between the individual's psychological condition, or 'state of consciousness', and the type of theology or ethics he formulates or adopts. The present study was an investigation designed to determine whether Anglican clergy and Pentecostal pastors differed significantly with regard to theological orientation, level of self-actualization or the degree of flexibility they showed in the application of sexual values. Furthermore we were concerned to discover the inter-relation between these various traits. A third group of ordinands from St. Paul's College (C.P.S.A.) was also incorporated into the study. All forty eight subjects completed a series of tests and questionnaires which were scored according to eighteen different scales relating to selfactualzing traits, theological orientation and the application of sexual ethics. In brief the results showed that the Anglican clergy were significantly more self-actualizing, theologically liberal and more flexible in the application of sexual values than were Pentecostal pastors. Little difference was found to exist as a function of age and education, or between Anglican clergy and ordinands. Furthermore theological conservatism, general conservatism, dogmatism and inflexibility in the application of sexual ethics were all shown to correlate negatively with self-actualization. In the discussion of results the writer attempted to demonstrate the close relationship between the churchman's psychological make-up and the way in which he construes his world and formulates his theology and ethics. In the concluding discussion the writer once again widened the scope of concern in order to demonstrate how the findings of the present study can be fitted into the broader context of the life of the church. It has been suggested that the type of approach adopted by churchmen to problems of sexuality is very much determined by their psychological make up. Hence in this sense both the status of the church in modern society and the degree to which the church can assist in the resolution of our culture's problems in the field of human sexuality, is greatly dependent upon the 'states of consciousness' of our clergy.
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- Date Issued: 1977
The endocoprid dung beetles of southern Africa (Coleoptera: Scarabaeidae)
- Authors: Davis, Adrian L V (Adrian Louis Victor)
- Date: 1978
- Subjects: Dung beetles -- Ecology , Dung beetles -- Africa, Southern
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5845 , http://hdl.handle.net/10962/d1011030 , Dung beetles -- Ecology , Dung beetles -- Africa, Southern
- Description: The biology and ecology of the endocoprid dung beetles of the Aethiopian zoogeographic region has been studied in the field and laboratory. Work has centred mainly on Oniticellus planatus and O. formoaus although infomation has also been supplied on O. egregius, O. pictus and Tragiscus dimidiatus. The taxonomy of Onticellus (s.str.) and Tragiscus has been discussed with the recommendation that O. planattus and O. pseudaplanatus be synonymised. It has been suggested that endocoprid distribution is chiefly controlled by temperature, rainfall and the density of suitable large dung masses. On the basis of distribution it has been suggested that the taxonomic status of the subspecies of O. pictus should be reviewed. Endocoprids (genus Oniticellus (s.str.) are found throughout the warmer regions of Africa and Asia. Tragiscus is found only in Africa. Methods are described for monitoring endocoprids in the field, for distinguishing freshly emerged from older specimens, and for breeding endocoprids under laboratory conditions. It has been shown that endocoprids breed within or just beneath large dung masses unlike most other members of the Scarabaeinae which actively bury dung and construct the their broods at depth in the soil. It has been shown that there is a restriction of breeding sites available to endocoprids due to the removal of dung by the Scarabaeinae beetles and the limited space available within dung pads. This has resulted in low endocoprid population numbers, a disadvantage, which has been countered by highly specialised but opportunistic breeding habits. The requirements of dung plasticity have limited the time available for breeding activity by most endocoprids (excluding O. egresius) so that both the reproductive system and the reproductive behaviour (cf. O. planatus) are geared to rapid egg and brood production. Large numbers of follicles are able to be produced over a short period. In the probable absence of feeding, this has possibly been allowed by the involvement of a well developed fat body. The broods are tended by the parent female during larval development and the follicles are gradually resorbed, probably to prevent starvation. Ovarian recovery is rapid once feeding recommences. Behavioural mechanisms have developed which boost the number of broods constructed and the rapidity with which they are produced. The duration of endocoprid colonisation and the timing of arrival at dung is shown to be related to the rate of pad desiccation which is chiefly controlled by temperature and degree of dung removal by other dung beetles. Precipitation may also play a part. Predation by vertebrates and other insects has been noted and a number of mechanisms are described which are probably protective. Two insect parasitoids of O. formosus larvae have been recorded. The potential use of endocoprids in the Australian dung and fly control project has been discussed and it is recommended that their introduction be considered of low priority. It is suggested that the endocoprids evolved from Euoniticellus type ancestors and that their behaviour complex nidification developed in response to harsh environmental factors, chiefly the danger of desiccation and competition for dung with other dung beetles. From a consideration of brood and brood chamber construction it is suggested that O. egresius is a relatively unspecialised endocoprid which may retain dry season aestivation and has not evolved much further than its probable Euoniticellus type ancestor. The broods are coated in clay and abandoned soon after construction. Greater specialisation is shown by O. planatus and O. formosus which exhibit brooding behaviour, increasing longevity, more specialised brood protection, increased potential fecundity and continuous activity throughout the year. O. formosus shows greater specialisation in brood production than O. planatus. Greatest specialisation is found in T. dimidiatus which exhibits a precise brooding period and low egg production. Brood construction is of a similar degree of specialisation to that of O. formosus. Activity is also continuous throughout the year. The comparative biology of the five southern African endocoprids is summarised in Table 35. Summary, p. 129-131.
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- Date Issued: 1978
Hugh Tracey memorial service
- Authors: Dennis Etheredge (Speaker) , Tracey, Andrew T N
- Date: 1977
- Subjects: Tracey, Hugh , Memorial service , Autobiography , Tuning fork , Sub-Saharan African music , Africa South Africa Saronde Farm f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/113245 , vital:33734 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC131b-02
- Description: Dennis Etheredge giving a brief background on Hugh Tracey autobiography which he had read entitled "A river left for me"; Hugh's awardment of the Carnegie research fellowship, his tuning fork also how ILAM came into being in 1953 and how Dennis Etheredge and Gavin Relly came into contact with Hugh Tracey
- Full Text: false
- Date Issued: 1977
Hugh Tracey memorial service
- Authors: Dennis Etheredge (Speaker) , Tracey, Andrew T N
- Date: 1977
- Subjects: Tracey, Hugh , Memorial service , Autobiography , Tuning forks , Sub-Saharan African music , Africa South Africa Saronde Farm f-sa
- Language: English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/112588 , vital:33613 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC129a-02
- Description: Dennis Etheredge giving a brief background on Hugh Tracey autobiography which he had read entitled "A river left for me"; Hugh's awardment of the Carnegie research fellowship, his tuning fork also how ILAM came into being in 1953 and how Dennis Etheredge and Gavin Relly came into contact with Hugh Tracey
- Full Text: false
- Date Issued: 1977
The nature of the community of the Dead Sea scrolls (with particular reference to the manual of discipline) and its relation to the church of the New Testament
- Authors: Draper, Jonathan A
- Date: 1977
- Subjects: Dead Sea scrolls Dead Sea scrolls -- Criticism, interpretation, etc. Apocalyptic literature -- History and criticism Qumran community
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1249 , http://hdl.handle.net/10962/d1011424
- Description: The scope of our examination of the ideas and beliefs of the Qumran sect and the Church of the New Testament is limited to what contributes to our understanding of the nature of the respective communities. No attempt is made to present a full theological examination of the concepts which arise. The aim is not an exhaustive treatment, but rather to suggest areas where the beliefs of the communities throw light on each other. Our method is to begin by establishing the beliefs of the Qumran sect in each case, with particular reference to the Manual of Discipline, and then comparing this with the corresponding concept in the New Testament. This avoids the danger of reading back later Christian ideas into our treatment of the Scrolls. In our examination of the New Testament texts, we shall not assume that they constitute a unity nor that they can be taken at face value, but that they bear the marks of the interests of the early Church and of the conflicting tendencies and practices which marked its development. Consequently the tools of Form, Source and Redaction Criticism are utilized where they can contribute to our purpose. Chapter 1, p. vi.
- Full Text:
- Date Issued: 1977