21838 research outputs found
Sort by
Luminosity determination in pp collisions at s = 13 TeV using the ATLAS detector at the LHC
No full textAbstract
The luminosity determination for the ATLAS detector at the LHC during Run 2 is presented, with pp collisions at a centre-of-mass energy
s
=
13
TeV. The absolute luminosity scale is determined using van der Meer beam separation scans during dedicated running periods in each year, and extrapolated to the physics data-taking regime using complementary measurements from several luminosity-sensitive detectors. The total uncertainties in the integrated luminosity for each individual year of data-taking range from 0.9% to 1.1%, and are partially correlated between years. After standard data-quality selections, the full Run 2 pp data sample corresponds to an integrated luminosity of
140.1
±
1.2
fb
-
1
, i.e. an uncertainty of 0.83%. A dedicated sample of low-pileup data recorded in 2017–2018 for precision Standard Model physics measurements is analysed separately, and has an integrated luminosity of
338.1
±
3.1
pb
-
1
Search for resonant and non-resonant Higgs boson pair production in the b b ¯ τ + τ − decay channel using 13 TeV pp collision data from the ATLAS detector
No full textAbstract
A search for Higgs boson pair production in events with two b-jets and two τ-leptons is presented, using a proton–proton collision dataset with an integrated luminosity of 139 fb−1 collected at
s
= 13 TeV by the ATLAS experiment at the LHC. Higgs boson pairs produced non-resonantly or in the decay of a narrow scalar resonance in the mass range from 251 to 1600 GeV are targeted. Events in which at least one τ-lepton decays hadronically are considered, and multivariate discriminants are used to reject the backgrounds. No significant excess of events above the expected background is observed in the non-resonant search. The largest excess in the resonant search is observed at a resonance mass of 1 TeV, with a local (global) significance of 3.1σ (2.0σ). Observed (expected) 95% confidence-level upper limits are set on the non-resonant Higgs boson pair-production cross-section at 4.7 (3.9) times the Standard Model prediction, assuming Standard Model kinematics, and on the resonant Higgs boson pair-production cross-section at between 21 and 900 fb (12 and 840 fb), depending on the mass of the narrow scalar resonance
Experiences of nurse educators regarding transformation in nursing education and training in Free State Province
No full textAbstracts in English and SothoThe purpose of the study was to explore and describe nurse educators’ experiences
with nursing education and training transformation in the Free State province. The
study was conducted at the two campuses of a nursing college in the Free State. A
descriptive explorative interpretative qualitative study was conducted. The research population was nurse educators in the nursing college in the Free State. Nonprobability
purposive sampling was done to recruit participants, and data were
collected through in-depth interviews with ten nurse educators in the nursing college.
An interview guide was developed and pretested for trustworthiness.
Data analysis was done concurrently with data collection, using a “hands-on” process,
also known as “dwelling on” data by the researcher. The researcher listened to audio
recordings and reread the transcriptions to immerse herself in the collected data. The
thematic approach was employed. The categories were clustered into subthemes and
grouped to form themes: 1) Transformation processes, 2) Availability of resources, 3)
Organisational factors, and 4) New nursing programme. A continuous comparison was
employed across the categories and themes to develop meanings.
The study’s findings indicated lack of involvement and communication challenges
triggered emotional responses among participants. They also reported a lack of
resources and management’s inability to deal with change processes that had a
negative impact on new programmes’ implementation. Hence, recommendations were made for nursing education to strengthen clinical practice and for further research
studies to facilitate the effective rendering of the new programmes. The study
concludes that in order for any educational transformation to be successful, nurse
educators’ experiences, beliefs, perceptions and views must be recognised.Sepheho sa boithuto e ne e le ho fuputsa le ho hlalosa boiphihlelo ba barupelli ba
baoki malebana le phetoho ya thuto le kwetliso ya Baoki ba Freisetata; Afrika Boroa.
Diphuputso tsena di ile tsa etswa dikampong tse pedi tsa sekolo sa booki Freisetata.
Ho ile ha etswa boithuto ba boleng bo hlalosang-hlahlobo. Mohlala wa batho ba
ithutwang e ne e le barupelli ba baoki sekolong sa Booki Freisetata. Kgetho-mohlala
ka maikemisetso, ntle le bonnete ba kenelo sehlopheng (Non-probability Purposive
Sampling) e ile ya etswa ho thaotha barupelli. Dintlha li ile tsa bokellwa ka dipuisano
tse tebileng le barupelli ba leshome ba baoki sekolong sa booki. Ho ile ha sebeliswa
tataiso ya dipuisano e entsweng mme ya lekwa esale pele hore na e ka tsheptjwa
mme ha etswa mongolo oa dintlha tse hatisitsweng. Hlahlobo ya dintlha e entswe ka
nako e le nngwe le pokello ya dintlha, ho sebeliswa mokhwa wa matsoho o tsejwang,
hape e le "ho dula holima" pokellotaba ke mofuputsi. Mofuputsi o ile a mamela
dikhatiso, mme a bala dingoliloeng hape, ho ikakgela ka setotswana ho taba tse
bokeletsweng. Mokhwa wa Thematic o ile wa sebeliswa. Dihlopha di ile tsa
kopanngwa ka dihlowana, mme tsa arolwa ho etsa dihlooho, mme papiso e
tswellwang pele e ile ya sebeliswa ho phatlalla le dihlopha le dihlooho ho hlahisa
moelelo. Diphuputso tsa thuto di bontshitse 1) Phetoho tsamaisong 2) Pokeletso ya
disebedisoa 3) Maemo a tsamaiso le 4) Thupello tse ntjha. Ka hona, dikhothaletso tse
entsweng e ne e le tsamaisong ya thuto ya booki, ho matlafatsa ditshebeletso tsa
lefapha la bophelo bo botle; le phuputso tse ka tswelletswang pele ho phetahatsa
boleng ba mananeo a matjha. Boithuto bo dumela hore phetoho e phetahatseng
thutong e hloka ho ananelwa ha boiphihlelo , tumelo, temoho le maikutlo a barupelli
ba baoki.M.A. (Nursing Sciences)College of Human Science
Macroeconomic determinants of fiscal deficits in East Africa
No full textThis thesis examines the macroeconomic determinants of the fiscal deficit and its tax revenue and public expenditure components in a panel of five East African countries, namely: Burundi, Kenya, Rwanda, Tanzania, and Uganda. The empirical analysis uses both linear and nonlinear panel autoregressive distributed lag models, panel Granger causality tests, and panel impulse response functions. The analysis is based on annual panel data for the period 1980–2019.
The results show that the fiscal deficit is positively associated with real per capita GDP,
regardless of whether this relationship is estimated during growth accelerations or growth decelerations. While the study concludes that the fiscal deficit is procyclical, the findings do not provide sufficient evidence to conclude that this relationship is nonlinear. In addition, the fiscal deficit is positively associated with the current account and interest rates, and negatively associated with inflation, grants, and debt service.
With regard to the components of the fiscal deficit, the results show that both tax revenue and public expenditure are positively associated with real per capita GDP, both during growth accelerations and decelerations. The study thus concludes that tax revenue is countercyclical while government expenditure is procyclical. However, the study findings do not provide sufficient evidence to conclude that the relationship between real per capita GDP and both tax revenue and total government expenditure is nonlinear. In addition, government consumption expenditure is shown to be acyclical while government investment expenditure is procyclical.
Multivariate Granger causality results show long-run feedback causality between the fiscal deficit and current account balance, the GDP deflator, interest rates, and grants. In addition, the study findings show long-run unidirectional causality running from real per capita GDP growth to fiscal deficits, and from debt service to fiscal deficits. Short-run Granger causality results indicate one-way causality running from real GDP growth to fiscal deficits, and from fiscal deficits to the GDP deflator. The results from the impulse response functions and multivariate Granger causality tests are qualitatively similar.Economic
Factors affecting growth and profitability of spaza shops in Ekurhuleni Metropolitan municipality
No full textThe study aimed to understand the factors affecting the growth and profitability of spaza shops in the Ekurhuleni Metropolitan Municipality (EMM). A qualitative, explorative approach was undertaken in the four selected locations of the East Rand Region of the EMM, namely Kwa-Thema, Tsakane, Daveyton and Duduza. Fifteen interviews were conducted using an online WhatsApp voice note communication methods during the Covid-19 lockdown period. The main findings were that the pricing of the products, not having enough stock, credit facilities offered to customers and competition from foreign national. A lack of attention to the factors leads to the continuous closure of South African-owned spaza shops. Any intervention to sustain the growth and profitability of spaza shop should include strategic pricing of products, keeping spaza shops fully stocked with variety of products that appeals to the customers, identifying prospective suppliers, not offering credit, attending business trainings, providing excellent customer service, and building a close working relationship between South African-owned spaza shops and foreign national-owned spaza shops.M. Com. (Business Management)Business Managemen
A postcolonial missiological understanding of the role of the church towards sex workers : a proposed liberative praxis for URCSA
No full textThis study probes the issue of the marginalisation of women in sex work by the church with the aim of developing a liberative praxis for the Uniting Reformed Church in Southern Africa (URCSA) based on the research question: How can a postcolonial reading of the Bible shape the church’s missionary praxis towards the liberation of sex workers? Sex workers are judged morally while sex work is identified as sin by the church. Apart from a re-reading of the text of Luke 7:36-40, the researcher also critically analyses the current missional praxis of the URCSA, engaging texts such as the Bible, the Church Order and the Confessions, especially the Confession of Belhar. The aim is to uncover how the URCSA reads and interprets these texts especially in the context of the marginalised.
As a missiologist coming from a certain ecclesiological, theological, and cultural backround, I unpacked the discussion by employing the missiological framework using the praxis matrix model to carry out a postcolonial reading of the Bible. The aim is to address the primary rationale of this thesis namely, to create a respectful, hopeful, liberative encounter between Black women in sex work and the church that is silent in the face of their marginalisation.
In addressing the rationale and ultimately responding to the research question, an attempt is made to unmask the influence of the colonial reading of the Bible on the black church, because such a reading disempowered and oppressed the people. The employ of the Contextual Bible Study method enabled the creation of a platform for engagement between women in sex work and the Bible. The study is not only engaging the Bible, but it also, formed a creative dialogue between other scholarships such as womanist theologies, feminist theologies and bosadi/womanhood redefined biblical hermeutics and these women.
This study thus proposes a Belharic missiological postcolonial reading of the Bible that aims at liberating, restoring, and transforming the lives of women in sex work. It presupposes that the Bible should be read and interpreted from the experiences of poverty, abuse, inequality – from the perspective of marginalised black women.Ph. D. (Theology (Missiology))Christian Spirituality, Church History and Missiolog
A textual analysis of three, South African, online newspapers (2021-2022) on the representation of the Economic Freedom Fighters
Get PDFThis study, entitled “A textual analysis of three, South African, online newspapers (2021-2022) on the representation of the Economic Freedom Fighters”, is a cross-sectional, mixed methods textual analysis investigating how three South African online newspapers, namely the Daily Maverick, City Press, and the Mail & Guardian represented the political party, Economic Freedom Fighters. The analysis focuses on texts produced and disseminated between January 2021 and June 2022, with the target population being the written texts and images from the above-mentioned online newspapers; specifically, all the stories reporting on the Economic Freedom Fighters (henceforth referred to as the ‘EFF’). Articles from these publications that ran with the EFF (or its member/s) in their headlines, were used as primary data; whereas other articles that related to the EFF or to this study, were approached as secondary data. Relying on purposive sampling, the researcher visited the websites of these newspapers to access stories written about the EFF; the method was deemed suitable to maximise understanding of the research problem.
Through the use of her personal laptop and data bundles, the researcher was able to access the Internet, identify and sample the required online articles, and finally analyse the articles in terms of the textual and visual elements thereof. The articles were analysed to determine whether the newspapers represented the EFF positively, negatively, or neutrally during the given time period. From a political communication perspective, the study contributes to how newspapers, or the media in general, gather and report political content, and it is hoped that the findings will promote objective and unbiased reporting.M.A. (Communication)Communication Scienc
An exploration of Johannesburg metropolitan police killings
No full textThe work of metropolitan police officers is fraught with numerous on-the-job risks and accidents while responding to emergencies or performing potentially dangerous tasks. It is against this backdrop that the aim of this study was to explore the extent, causes, and consequences of the killing of the Johannesburg Metropolitan Police Department officers in areas within the City of Johannesburg jurisdiction.
The study adopted a qualitative research approach and exploratory case study design with target population of thirty purposively sampled Johannesburg Metropolitan Police Department officers and three directors. Semi-structured interviews were applied as the predominant means for the primary data collection. Both content analysis and thematic coding were applied to develop a framework for the study findings. The study established that accidents, high crime rates, lack of equipment, lack of training, and violence were among the main causes of the deaths of officers while on duty. The study recommends that training, more equipment, and an amendment to the existing policy should be implemented to prevent further deaths of the officers.M.A. (Police Science)Police Practic
Spiritual leadership within the ambit of African Management philosophies using interactive qualitative analysis
Get PDFOrientation: This research is about a focus group of managers and their experiences relating to spiritual leadership in the South African context.
Research purpose: To critically examine mainstream spiritual leadership, within the context of African management philosophies (AMP), towards describing and prosing a southern African spiritual leadership scale.
Motivation for the study: A systematic literature review revealed a stark gap in empirical evidence of the existence of spiritual leadership as a harbinger of employee contentment, welfare, and organisational success in Africa.
Research design, approach and method: Through the interactive qualitative analysis (IQA) process, data from eight managers were collected and analysed, and an interrogation of the existence of spiritual leadership via the African lens using AMP typologies was conducted. An exploratory qualitative study was conducted via a focus group of eight managers drawn using biased sampling based on ‘distance and power’ analysis to the phenomena of spiritual leadership.
Main findings: Connection to nature principles (nurturing) are a primary driver to employee welfare. Life as a universal current’s elements (compassion and empathy) influence Ubuntu principles, national culture principles (a set of behaviours, customs, and beliefs) and Indigenous knowledge systems (unadulterated knowledge). Ubuntu also influences co-operative teamwork (togetherness) which is a circulator in the scale that triggers intrinsic motivation which is impacted by traditionalism (adherence to accepted customs and beliefs), and communalism principles (belonging to a community). Intrinsic motivation impacts employee turnover which is influenced by engagement, performance, productivity, and mythology (African myths and lore). Employee turnover ultimately influences employee welfare which is a primary outcome.
Contribution or value add: This research helps undergird spiritual leadership in the South African context by equipping leaders with a new paradigm that uses local management principles that measures its enablers and inhibitors.Graduate School of Business Leadershi
Search for heavy resonances decaying into a Z or W boson and a Higgs boson in final states with leptons and b-jets in 139 fb−1 of pp collisions at s = 13 TeV with the ATLAS detector
No full textAbstract
This article presents a search for new resonances decaying into a Z or W boson and a 125 GeV Higgs boson h, and it targets the
ν
ν
¯
b
b
¯
,
ℓ
+
ℓ
−
b
b
¯
, or
ℓ
±
νb
b
¯
final states, where ℓ = e or μ, in proton-proton collisions at
s
= 13 TeV. The data used correspond to a total integrated luminosity of 139 fb−1 collected by the ATLAS detector during Run 2 of the LHC at CERN. The search is conducted by examining the reconstructed invariant or transverse mass distributions of Zh or Wh candidates for evidence of a localised excess in the mass range from 220 GeV to 5 TeV. No significant excess is observed and 95% confidence-level upper limits between 1.3 pb and 0.3 fb are placed on the production cross section times branching fraction of neutral and charged spin-1 resonances and CP-odd scalar bosons. These limits are converted into constraints on the parameter space of the Heavy Vector Triplet model and the two-Higgs-doublet model