Projekborge speel belangrike rolle by die fase stadium hekke van 'n projeklewensiklus model. Die rol van projekborge by hierdie hekke, en die kenmerke wat vereis word van die borg, is egter nog selde bestudeer. Hierdie studie het die rol van staatsdiens en munisipale borge by hekke tussen die fases van 'n lewensiklus model van 'n water-nutsorganisasie ondersoek, en kenmerke waaroor die borge moet beskik asook uitdagings wat hulle die hoof moet bied, geïdentifiseer. 'n Gevallestudiebenadering is gevolg, en semi-gestruktureerde onderhoude is met relevante belanghebbendes gevoer. Die bevindings kan die senior bestuur van water-nutsorganisasies, staatsdepartemente, en munisipaliteite help om geskikte projekborge aan te stel.

Project sponsors play significant roles at the stage gates of project life cycle models (PLCMs). However, research on the roles that sponsors play at stage gates, and the attributes required of the sponsor, are sparse. This study investigated the roles played by government and municipal sponsors at the PLCM stage gates of a water utility, and identified the attributes that the sponsor should have as well as the challenges they face. A case study approach was employed, and semi-structured interviews were conducted with relevant stakeholders. The findings could assist the senior management of water utilities, national government departments, and municipalities when appointing suitable project sponsors.

Mobiele bystandstelsels (MAS) beloof om die personeeltekorte in die operasiesaal wêreldwyd te oorkom. 'n Literatuuroorsig geïnspireer deur die PRISMA 2020 metode bepaal die stand van die kuns van MAS en identifiseer 'n gebrek aan toepassingsareas vir MAS in die operasieteater. Onderhoude met vakkundiges het ten doel om toepassingsareas vir MAS te ondersoek. Die resultate toon dat die meeste operasionele take na materiaalbestuur en pasiëntbestuur verwys. MAS met die potensiaal om die tyd in materiële en pasiëntbestuur te verminder, sowel as fisiese en geestelike spanning in pasiëntbestuur, het groot potensiaal in die operasieteater.

Mobile assistance systems (MAS) promise to overcome personnel shortages in operating theatres worldwide. A literature review inspired by the PRISMA 2020 method determines the state of the art of MAS, and identifies a lack of application areas for MAS in the operating theatre. Interviews with subject-matter experts aim to investigate application areas for MAS. The results show that most operational tasks refer to material management and patient management. MAS, with their potential to reduce the time needed for material and patient management, and the physical and mental strain of patient management, have great potential in the operating theatre.

Lean six sigma (LSS) is 'n belangrike besigheidstrategie vir organisasies, insluitend klein en mediumgrootte ondernemings (KMO's). Oor die jare het KMO's 'n potensieel beduidende impak op verskeie lande se bruto binnelandse produk (BBP) gehad. Die hoofdoel van hierdie navorsing is om die kritieke suksesfaktore (CSF's) vir lean six sigma (LSS) implementering in die Koninkryk van Saoedi-Arabië se KMO's te ondersoek, en om by te dra tot die ontdekking van die faktore wat lei tot besigheidsukses, verhoogde inkomste en verbeterde mededingende voordele. Die studie het 29 faktore uit vorige navorsing geïdentifiseer ten einde die suksesvolle implementering van LSS in die KMO-sektor in veral Saoedi-Arabië te lei. Die CSF's is verfyn, wat 'n gekonsolideerde lys van 14 faktore opgelewer het. 'n Hoofkomponent-analise (PCA) het vier hooffaktore geïdentifiseer: leierskapondersteuning en bestuurstruktuur, tegnologiese vermoëns, kennisverkryging, en kreatiwiteit en innovasie. Hierdie faktore kan die sukses van KMO's in Saoedi-Arabië beïnvloed deur LSS in hul besigheidsprosesse aan te neem.

Lean six sigma (LSS) is an important business strategy for organisations, including small and medium-sized enterprises (SMEs). Over the years, SMEs have had a potentially significant impact on various countries' gross domestic product (GDP). The main purpose of this research is to investigate the critical success factors (CSFs) for lean six sigma (LSS) implementation in the Kingdom of Saudi Arabia's SMEs, and to contribute to discovering the factors that lead to business success, increase revenue, and enhanced competitive advantages. The study identified 29 factors from previous research in order to guide the successful implementation of LSS in the SME sector in Saudi Arabia in particular. The CSFs were refined, producing a consolidated list of 14 factors. A principal components analysis (PCA) identified four main factors: leadership support and management structure, technological capabilities, knowledge acquisition, and creativity and innovation. These factors could influence the success of SMEs in Saudi Arabia by adopting LSS in their business processes.

RESUMEN En la Industria cubana La Purísima se producen salsas y aderezos para la gastronomía nacional; pero no dispone de un proceso para la deposición de las cáscaras de huevo de gallina, como resultado, se vierten diariamente 220 kg de cáscaras que generan un impacto negativo en el medio ambiente. La investigación evalúa el secado de las cáscaras de huevo de gallina con membrana proteica a escala de laboratorio, con vistas a revalorizar este residuo en la producción de un suplemento alimenticio para aves de corral rico en calcio. Se determinó el contenido de carbonato de calcio en la cáscara para confirmar la aplicación potencial del residuo. La curva de secado y del régimen de secado se obtuvo por medición experimental en un secadero bajo aireación a 90 °C. El contenido de carbonato de calcio en el residual fue de 93,33 %. La curva de secado se ajustó a un modelo matemático exponencial en función de la constante de secado y la humedad en equilibrio a una temperatura de 90 °C. El régimen de secado del sólido presentó un período de velocidad de secado decreciente hasta un valor de humedad de 0,021 kg de agua / kg de sólido seco, para valores inferiores presentó una desviación de la función exponencial en su velocidad. El aprovechamiento de las cáscaras de huevo residuales resultó ser una fuente atractiva de carbonato de calcio con potencialidades para su utilización en la elaboración de suplemento alimenticio para aves de corral.

The Cuban industry La Purísima produces sauces and dressings for the national gastronomy; but it does not have a process for the deposition of chicken eggshells, as a result, 220 kg of eggshells are dumped daily, which generate a negative impact on the environment. The research evaluates the drying of hen eggshells with protein membrane on a laboratory scale, with a view to revalorizing this waste in the production of a calcium-rich poultry feed supplement. The calcium carbonate content of the shell was determined to confirm the potential application of the residue. The drying curve and drying rate curve was obtained by experimental measurement in a drying oven under aeration at 90 °C. The calcium carbonate content of the residue was 93,33 %. The drying curve was fitted to an exponential mathematical model as a function of the drying constant and the moisture in equilibrium at a temperature of 90 °C. The drying regime of the solid presented a period of decreasing drying rate up to a moisture value of 0,021 kg of water / kg of dry solid, for lower values, this presented a deviation from the exponential function in its rate. The utilization of residual eggshells proved to be an attractive source of calcium carbonate with potential for its use in the production of feed supplement for poultry.

Abstract The use of fungi and bacteria with pathogenic capacity towards insects is considered a sustainable agroecological alternative for efficient pest control, as they are microorganisms of easy production in industrial scale, formulation and use. Therefore, the objective was to evaluate four entomopathogenic formulations in the control of Brevicoryne brassicae L., a key pest of cabbage (Brassica oleracea L.), in a randomized complete block design with 4 treatments, plus an absolute control and 4 replicates. The variables evaluated were the number of dead and live aphids per plant and the number of infested plants. The commercial formulations Biosafe, BesT-K, Metarrizo and Yurak containing strains of Bacillus subtilis, Bacillus thuringiensis var kurstaki (Btk), Metarhizium anisopliae and Bauveria bassiana respectively, are the ones that were used by spray application to the crop in two seasons: planting, season August-December 2019 and August-December 2021. Among the results, M. anisopliae was recorded with up to 91.11 % efficiency, followed by B. bassiana with 89.50 % and Bs with 79.38 % in the reduction of populations under field conditions. In the laboratory, Btk and M. anisopliae reached 100 % mortality in a period of seven days, so it is concluded that in the medium term, entomopathogenic fungi in the field are more efficient in aphid control; however, in controlled conditions Btk is also efficient.

Resumen El uso de hongos y bacterias con capacidad patogénica hacia los insectos se considera una alternativa agroecológica sostenible de lucha eficiente contra las plagas por ser microorganismos de fácil producción en escala industrial, formulación y uso; entonces, el objetivo ha sido evaluar cuatro formulados entomopatógenos en el control de Brevicoryne brassicae L, plaga clave de la col (Brassica oleracea L.), en diseño de bloques completos al azar de 4 tratamientos, sumado un testigo absoluto y 4 réplicas, siendo las variables evaluadas la cantidad de pulgones muertos y vivos por planta y cantidad de plantas infestadas. Los formulados comerciales Biosafe, BesT-K, Metarrizo y Yurak que contenían cepas de Bacillus subtilis, Bacillus thuringiensis var kurstaki (Btk), Metarhizium anisopliae y Bauveria bassiana, respectivamente, son los que fueron utilizados mediante la aplicación por aspersión al cultivo en dos épocas de siembra, temporada agosto-diciembre 2019 y agosto-diciembre 2021. Entre los resultados se registró al M. anisopliae con hasta 91,11 % de eficiencia, seguida por B. bassiana con 89,50 % y Bs con 79,38 % en la reducción de las poblaciones en condiciones de campo; en laboratorio el Btk y M. anisopliae alcanzaron el 100 % de mortalidad en un lapso de siete días, por lo que se concluye que a mediano plazo los hongos entomopatógenos en campo resultan ser más eficientes en el control del pulgón, sin embargo, en condiciones controladas el Btk también es eficiente.

ABSTRACT This study aimed to evaluate the effects of different colors and management of polypropylene non-woven fabric coverings and two different localized irrigation systems on the physiological characteristics and yield of industrial tomatoes. The experiment was installed in a randomized block design arranged in a split-plot scheme with four replications. Surface and subsurface drip were used in the plots, and five plant cover strategies with non-woven fabric in the subplots: i) without non-woven fabric; ii) coverage with white non-woven fabric; iii) coverage with white non-woven fabric, removed between 30 and 60 days after transplanting the seedlings; iv) coverage with red non-woven fabric; v) coverage with red non-woven fabric, removed between 30 and 60 days after transplanting. Photosynthesis, transpiration, electron transport rate, stomatal conductance, carbon concentration, total fruit yield, and water use efficiency were evaluated. ANOVA and the Scott-Knott test were used. Transpiration is favored by the white non-woven fabric and the stomatal conductance by the white and uninterrupted red one. However, the tomato yield is not influenced by the coverings, except for the red one, removed only between 30 and 60 days after transplanting, which is the worst condition for industrial tomato production. Surface and subsurface irrigation can be used with the same efficiency.

RESUMO O objetivo deste estudo foi avaliar os efeitos de diferentes colorações e manejos de coberturas de tela não-tecida, e de dois diferentes sistemas de irrigação localizada sobre características fisiológicas e produção de frutos do tomateiro industrial. O experimento foi instalado em delineamento de blocos ao acaso, com 4 repetições, em parcelas subdivididas. Gotejamentos superficial e subterrâneo foram utilizados nas parcelas; e 5 estratégias de cobertura da planta com tela não-tecida nas subparcelas: i) sem cobertura; ii) cobertura com tela não-tecida branca; iii) tela não-tecida branca, retirado entre 30 e 60 dias após o transplante; iv) tela não-tecida vermelha; v) tela não-tecida vermelha, retirado entre 30 e 60 dias após o transplante. Avaliou-se: taxa fotossintética, de transpiração e de transporte de elétrons; condutância estomática; concentração de carbono; produção total de frutos e eficiência do uso da água. Foram utilizados ANOVA e teste de Scott-Knott. A transpiração é favorecida pelas coberturas brancas, a condutância estomática, pelas coberturas brancas e vermelha ininterrupta, porém a produtividade não é influenciada pelas coberturas, exceto a vermelha, retirada entre 30 e 60 dias após transplante, que é a pior condição para o tomate industrial. Irrigações superficial e subterrânea podem ser utilizadas com mesma eficiência.

BACKGROUND: Child slavery in global supply chains is a complex problem because it involves various supply chain actors, including corporations, at different tiers, and external organisations and society. Many corporate sustainability on child labour, present a unilateral perspective which renders the development of child labour measures under the leadership of many companies tardy and inefficient. OBJECTIVES: This study conducted a comprehensive investigation into child slavery in supply chains to identify the key actors that can combat child slavery in the supply chain. METHOD: Thematic analysis of peer-reviewed journal articles, containing the keywords; child labour; supply chain, and child slavery; used interchangeably, based on three inclusion criteria; high frequency of relevant keywords; recent publication period; and high number of citations, was conducted. RESULTS: Four main actors and their influence on child slavery were identified namely i.). Corporations - through industrial characteristics, strategy, corporate social responsibility obligations, and internal stakeholders; ii.). Governments - through regulations, policies, and intentions to combat child slavery; iii.). Societies - through the establishment of social benchmarks and social accountability frameworks to address the social crisis; and iv.). External organisations - such as ILO, NGOs and trade unions as the dominant actors in combatting the child slavery phenomena in supply chains. CONCLUSION: The findings provide a nascent conceptual model for empirical work and a foundation for descriptive and normative research on child slavery in supply chains. CONTRIBUTION: The study's contribution is the assessment of the child slavery phenomenon using a multi-stakeholder perspective to gain a better understanding of the dynamics associated with child slavery.

ABSTRACT: Feathers are by-products that are generated in significant quantities by the poultry industry. Microbial bioconversion has been investigated as a promising strategy for the processing of feathers, since, along with the degradation of these keratinous materials, bioprocessing can result in value-added products. Thus, from the perspective of industrial microbiology, chicken feathers can be considered a raw material for obtaining microbial proteases. Within this context, this research investigated and characterized the production of extracellular proteases by Aspergillus sp., isolated from soil of the Amazon Rainforest. The enzymatic production was evaluated using several growth substrates (whole feathers, feather meal, human hair, casein, gelatin, peptone and chicken beaks). With highest enzyme production was obtained the feather meal (FM) and peptone. After 48 h of fermentation, FM degradation was 15.82%. The crude protease showed optimal activity at pH 5.0 and 37 °C and enzymatic activity was enhanced with the addition of 1 and 5 mM of CaCl2, MnSO4, KCl, MgSO4 and CuSO4. The detergents Tween 20 and Triton x-100, at concentrations 0.5 and 1% (v/v), tended to stimulate activity. The presence of 0.5 and 1% (v/v) of organic solvents (methanol, acetone, butanol, acetonitrile, isopropanol and DMSO), maintained the enzymatic activity. β-mercaptoethanolstimulated proteolytic activity in the enzymatic assays. This study suggested new direction for waste management with industrial applications giving rise to green technology for sustainable development.

RESUMO: As penas são subprodutos que são gerados em quantidades significativas pela indústria avícola. A bioconversão microbiana tem sido investigada como uma estratégia promissora para o processamento de penas, uma vez que, juntamente com a degradação desses materiais queratinosos, o bioprocessamento pode resultar em produtos de valor agregado. Assim, do ponto de vista da microbiologia industrial, as penas de frango podem ser consideradas matéria-prima para a obtenção de proteases microbianas. Dentro deste contexto, o objetivo deste trabalho foi investigar e caracterizar a produção de proteases extracelulares por Aspergillus sp., isolados de solo da floresta Amazônica. A produção enzimática foi avaliada utilizando diversos substratos de crescimento (penas inteiras, farinha de penas, cabelo humano, caseína, gelatina, peptona e bicos de frango). Com maior produção de enzima foi obtida a farinha de penas (FP) e peptona. Após 48 h de fermentação, a degradação da FP foi de 15.82%. A protease bruta mostrou atividade ótima em pH 5.0 e 37 0C e a atividade enzimática foi aumentada com a adição de 1 e 5 mM de CaCl2, MnSO4, KCl, MgSO4 e CuSO4. Os detergentes Tween 20 e Triton x-100, nas concentrações 0.5 e 1% (v/v), tenderam a estimular a atividade. A presença de 0.5 e 1% (v/v) dos solventes orgânicos (metanol, acetona, butanol, acetonitrila, isopropanol e DMSO), mantiveram a atividade enzimática. O β-mercaptoetanol estimulou a atividade proteolítica nos ensaios enzimáticos. Este estudo sugere uma nova direção para a gestão de resíduos com aplicações industriais dando origem à tecnologia verde para o desenvolvimento sustentável.

Abstract The water implications, in conjunction with the environmental aspects, of agro-industrial development in Jalisco are analyzed, specifically focusing on the tequila production chain. This analysis considers the fluctuations in water policy, water management, and environmental policy, considering the socio-environmental impacts that arise as consequences within the tequila production chain projected towards a strategic agro-industrial development in a free market context, which has caused direct and indirect environmental impacts in a significant part of the state of Jalisco. To achieve the objective, methods from different disciplinary backgrounds were employed, including a critical retrospective analysis of water management history, causal tracing analysis, and public policy analysis, due to the starting theoretical relevance that is Political Ecology. One of the main findings revolves around the dilemma between mitigating socio-environmental impacts and achieving profitability schemes.

Resumen Se analizan las implicaciones hídricas en conjunción de las ambientales del desarrollo agroindustrial en Jalisco, en específico de la cadena productiva del tequila; ante los vaivenes de la política hídrica, la gestión del agua, y la política ambiental ante las afectaciones socioambientales como consecuencias en la cadena productiva del tequila proyectada hacia un desarrollo agroindustrial estratégico de libre mercado que ha originado impactos ambientales directos e indirectos en gran parte del estado de Jalisco. Para lograr el objetivo se utilizaron métodos de enfoque mixto: trabajo de análisis cualitativo y estadística inferencial por la pertinencia teórica de partida que es la Ecología política sobre un Estudio de caso. Uno de los principales hallazgos versa sobre el dilema que surge para productores de agave e industriales del tequila en atender o no la prevención y mitigación de afectaciones socioambientales del agua y la desigualdad social y la consecución de los esquemas de rentabilidad propios de la inercia de mercado.

BACKGROUND: Social Media (SM) growth and its acceptance at various economic levels are making it obligatory to make sense of its management in different business environments. A business environment can be volatile, uncertain, ambiguous, static-complex, simple-dynamic with a few similar, continuously changing factors, or simple-static with a few similar, unchanging factors. The environment is exemplified by the coronavirus disease 2019 (COVID-19) pandemic, regional war, globalisation, the fourth industrial revolution and disruptive technology. Regulatory focus theory was used to examine whether managers adopt a prevention or promotion focus to SM use, shed light on employees' attitudes and whether regulatory focus affected the measures taken toward SM management OBJECTIVES: The purpose of this paper was to explore how designed SM platforms can be managed in the face of dynamic and complex environments METHOD: Experts' interviews from various organisations were selected using snowball sampling to gather qualitatively rich data. The data were analysed thematically using ATLAS.ti software RESULTS: Prevention through reengineering processes, increased use of algorithms, information technology (IT) investments and restricting SM to private use only were observed among experts. Additionally, promotion-focus managers allow employees to use SM for work-related tasks and use monitoring software CONCLUSION: Information technology investments, sizing SM affordances and sensemaking SM management is becoming mandatory given the dynamic nature or pace at which the environment is changing CONTRIBUTION: The study contributed practical, social mediations, generated and qualitative method choice in the collection, analysis and interpretation of data

ORIENTATION: Globalisation and the coronavirus disease 2019 (COVID-19) pandemic resulted in a change in leadership in the work environment - this necessitated a relook into classical leadership constructs, but importantly, with the consideration of contextual influences. Spiritual leadership (SpL), which is the focus of this article, has however been predominantly viewed from a Eurocentric perspective. RESEARCH PURPOSE: To develop and validate an instrument to measure SpL within the South African context. MOTIVATION FOR THE STUDY: It is argued that SpL is important for organisational performance, employee contentment and wellness. Albeit the theory of SpL carries academic rigour and potency, it has not yet converted into an empirically developed and tested instrument within the South African organisational context. RESEARCH APPROACH/DESIGN AND METHOD: This empirical study was conducted from a quantitative positivist paradigm, utilising a cross-sectional design. A total of 5308 participants completed the self-administered survey from organisations in both the public and private sectors. The analysis includes item screening, exploratory factor analysis (EFA), confirmatory factor analysis (CFA), test for common method bias (CMB), determination of convergent validity and invariance analysis (configural, metric and scalar). MAIN FINDINGS: The results yielded reliable and valid SpL instrument, which is invariant with regards to the private and public sectors used in this study. The results of the study were also not influenced by CMB. PRACTICAL/MANAGERIAL IMPLICATIONS: This study provides a validated contextualised scale that can be used to measure leadership efficiency and efficacy. CONTRIBUTION/VALUE-ADD: The practical and academic value is the newly developed SpL instrument for the context of South African organisations. It can thus be used with confidence by organisational researchers and academics.

ORIENTATION: Coaching's expansion is driven by its impact on job performance and wellbeing through positive reinforcement and goal achievement. Working as coaches for individuals, teams, and organisations, industrial psychologists often report feeling inadequately prepared for their coaching roles RESEARCH PURPOSE: The objective of this study was to explore industrial psychologists functioning as coaches, and, their training and development needs related to coaching in the workplace MOTIVATION FOR THE STUDY: Coaching is driven by its benefits for job performance and wellbeing, highlighting a challenge where many industrial psychologists, frequently acting as coaches, feel unprepared RESEARCH APPROACH, DESIGN AND METHOD: A qualitative research approach with an interpretivism paradigm was employed in this study. The participants, industrial psychologists and interns (N = 17) were approached using snowball sampling. The data was captured with qualitative surveys and analysed using thematic analysis MAIN FINDINGS: The results showed that some participants felt confident since they experienced certainty of coaching psychology theories and the role of self-awareness in shaping their coaching methods. Some participants experienced less confidence in their coaching abilities and highlighted the need for supervision from a mentor in sound coaching practices. The participants reported a need for further development in skills such as emotional competence, and theoretical and technological knowledge and practice management PRACTICAL/MANAGERIAL IMPLICATIONS: Coaching interventions by industrial psychologists can enhance employee strengths, boosting organisational returns and promoting a triple-bottom-line CONTRIBUTION/VALUE-ADD: An industrial psychologist committed to coaching development can significantly boost both personal and organisational growth

BACKGROUND: The Fourth Industrial Revolution has given rise to the demand for universities to produce knowledge and innovation. Universities play a significant role in equipping students with skills and knowledge conducive for commercialisation of innovation (CoI). This investigation addressed the commercialisation dynamics research gap of entrepreneurial universities. OBJECTIVES: To investigate commercialisation dynamics of a strategic information management (SIM) system to facilitate the CoI process of an entrepreneurial university. METHOD: This paper presents the qualitative component of a larger mixed method complex action research strategy. Data were collected through an in-depth face-to-face interview and analysed through descriptive content analysis. RESULTS: The results highlight successful CoI practices fulfilled through the signification framework for the SIM system for commercialisation dynamics of entrepreneurial universities. The system is based on various components deemed suitable for commercialisation. CONCLUSION: This study has the potential to guide the University of Johannesburg (UJ), as well as other higher education institutions (HEIs) and institutions involved in entrepreneurship, innovation, and commercialisation, in creating an entrepreneurial environment for their innovators. Furthermore, this study can guide students, entrepreneurs, inventors, and innovators in terms of the process to follow to commercialise their business ideas, inventions, and innovation. CONTRIBUTION: The SIM system incorporates dynamic system principles with intervention benchmarks and has intervention keys that will provide innovators with the safety net that will assist them in converting their ideas into commercialised products and services.

ORIENTATION: Bullying is widespread at South African universities and has short- and long-term negative consequences for employees and organisations RESEARCH PURPOSE: The study explored human resources (HR) practitioners' challenges in managing bullying at work and sought to establish a framework for managing bullying above and below the surface in the organisation from their viewpoint MOTIVATION FOR THE STUDY: Human resources practitioners are a strategic link between diverse constituencies in the organisation and consequently encounter several challenges in their attempts to address and manage bullying RESEARCH APPROACH/DESIGN AND METHOD: A qualitative constructivist grounded theory research was exploited to examine nine HR practitioners' standpoints in two universities in the Gauteng province MAIN FINDINGS: Human resources practitioners' roles remain dichotomised between serving dissimilar stakeholders with diametric expectations while protecting employees from prospective bullying circumstances. The proposed framework to manage workplace bullying above and below the surface from the HR practitioners' context has both pragmatic and theoretical noteworthiness PRACTICAL/MANAGERIAL IMPLICATIONS: The combinations of the power dynamics, roles and factors at play have acute ramifications on the HR practitioner's dexterity to circumvent, administrate and investigate bullying incidents. A proposed framework can help organisation management, practitioners and employees to be unconditionally alert about bullying multiplicities, expedite holistic determinations and preventative interventions to embrace diversity and panoramically reprehend bullying occurrences CONTRIBUTION/VALUE-ADD: This study adds a noticeable contribution to the field of workplace bullying, HR management and attendant remedial measures from HR practitioners in South Africa's academic institution context