Search results

Einführung in das Portfolio‐Management Allgemein ist in den letzten 5–10 Jahren zunehmendes Interesse der Wirtschaft und Verwaltung für Probleme der strategischen Planung festzustellen, nicht zuletzt aufgrund der Diskussion über das Portfolio‐Management. Dieses neue Planungsmodell rückt durch die Definition sogenannter Strategischer Geschäftsfelder (“business units”, vgl. Abschnitt 2 dieses Aufsatzes) als strategische Planung aus gesamtunternehmerischer Sicht in den Mittelpunkt der Betrachtung und löst sich damit los von der engen Funktionalorientierung, bei der jeder strategische Bereich als eigene und relativ unabhängige Planungseinheit auftritt. Abell/Hammond sprechen in diesem Zusammenhang von einem 3‐zyklischen Planungsprozess (Abell/Hammond 1979, S. 14) (vgl. Abb. 1); die Längeund Breite der einzelnen Planungsstufen geben gleichzeitig ihre zeitliche Dauer und ihre relative Bedeutung wieder.

Die Anwendung strategischer Fhrungsmethoden in Hotelunternehmen ist durch zunehmende Turbulenz im gesamtgesellschaftlichen Umfeld und durch Intensivierung des Wettbewerbes in der Tourismusbranche wichtiger denn je. Unbefriedigend ist, dass die strategische Fhrung von Service‐unternehmen lange Zeit zu sehr unter dem Eindruck einer Theorie fr Unternehmen der Sachgterpro‐duktion gestanden hat. Erst in den letzten Jahren wurden in verstärktem Masse eigene Theorieansätze entwickelt, wobei bestimmte Besonderheiten von Dienstleistungen verstärkte Beachtung finden. Dazu zählt vornehmlich die “buyer/seller‐interaction”, mit simultanem Ablauf von Produktion und Konsum. Die von Gästen wahrgenommene Qualität persönlicher Dienstleistungen wird in dieser Situation massgeblich beeinflusst. Um eine strategische Managementfalle zu vermeiden, ist daher das Geschehen im Rahmen persönlicher Gästekontakte und das damit verbundene Problem einer präventiven Qualitäts‐sicherung im Rahmen von Stärken/Schwächen‐Ana‐lysen als zentraler Erfolgsfaktor zu beachten.

Contemporary literature reveals that, to date, the poultry livestock sector has not received sufficient research attention. This particular industry suffers from unstructured supply chain practices, lack of awareness of the implications of the sustainability concept and failure to recycle poultry wastes. The current research thus attempts to develop an integrated supply chain model in the context of poultry industry in Bangladesh. The study considers both sustainability and supply chain issues in order to incorporate them in the poultry supply chain. By placing the forward and reverse supply chains in a single framework, existing problems can be resolved to gain economic, social and environmental benefits, which will be more sustainable than the present practices.

The theoretical underpinning of this research is ‘sustainability’ and the ‘supply chain processes’ in order to examine possible improvements in the poultry production process along with waste management. The research adopts the positivist paradigm and ‘design science’ methods with the support of system dynamics (SD) and the case study methods. Initially, a mental model is developed followed by the causal loop diagram based on in-depth interviews, focus group discussions and observation techniques. The causal model helps to understand the linkages between the associated variables for each issue. Finally, the causal loop diagram is transformed into a stock and flow (quantitative) model, which is a prerequisite for SD-based simulation modelling. A decision support system (DSS) is then developed to analyse the complex decision-making process along the supply chains.

The findings reveal that integration of the supply chain can bring economic, social and environmental sustainability along with a structured production process. It is also observed that the poultry industry can apply the model outcomes in the real-life practices with minor adjustments. This present research has both theoretical and practical implications. The proposed model’s unique characteristics in mitigating the existing problems are supported by the sustainability and supply chain theories. As for practical implications, the poultry industry in Bangladesh can follow the proposed supply chain structure (as par the research model) and test various policies via simulation prior to its application. Positive outcomes of the simulation study may provide enough confidence to implement the desired changes within the industry and their supply chain networks.

Sustainability, innovation, and corporate identity were the guiding ideas in a research. Professional discussion was used to get information. The research yielded four possibilities for a sustainable tourist business in 2040, each defined by the fundamental variables that will shape that future. This theoretical chapter is dedicated to the conceptualization of fairness concepts in relation to local knowledge sharing and addresses practical implications for how varied claims of justice by local actors might be handled in the development of sustainable tourism. The Sustainable Improvement Goals (SIGs) and the management ecology of tourism are investigated using a “heterogeneous respondents completed” methodology.

This work focuses on optimizing and predicting the tenacity of twin-sheath single-core hybrid yarn. This study aims to predict and maximize yarn performance by investigating key factors influencing yarn tenacity.

Three critical parameters − ultra-high molecular weight polyethylene (HPPE) denier, stainless steel micron size and twist per meter − were considered for making multicomponent yarn and optimized using the Box-Behnken design (BBD), a response surface methodology variant. The hybrid yarn studied consists of a stainless-steel core, a polyester inner layer and an HPPE outer layer with opposite twists. The ASTM D2256 method was applied on Instron 3365 machine to measure yarn tenacity.

The optimized yarn setup involved 200 twists per meter, 400 Den HPPE and 45-micron stainless steel, resulting in a 127.5 cN/Tex tenacity. The quadratic model best fits the data, with R² values close to 1.00 (R² = 0.9935, adjusted R² = 0.9817, projected R² = 0.8956), a lower PRESS value of 445, a higher adequacy precision of 19.6816 and a higher TPC percentage of 35.23%. The analysis of variance results confirmed the model significance (F-value = 84.75, P-value < 0.0001), and the average relative error was found to be 3.43%, indicating predictive accuracy.

This study demonstrates the effectiveness of the BBD in optimizing hybrid yarn tenacity, providing valuable insights in terms of core yarn and outer sheath yarn linear density with twist per meter. The work presents a novel approach to hybrid yarn optimization and prediction, expanding the potential for further research and development in textile engineering.

OTHER TYPES OF LANGUAGE LABORATORY 1. Laboratories without student recording facilities. To this category belong the various types of ‘milking machine’. The programme is fed to the students from the master tape recorder (or other source) via (‘audio‐active’) headsets with feed‐back from the students' microphones to their ears, although in the simplest form of this type of installation the student only possesses his headphones.