Workload Balancing Through Recurrent Subcontracting

We model a situation where a firm wishes to balance workload requirements by creating a portfolio of recurrent insourcing and outsourcing contracts. We use harmonic analysis to decompose an input workload profile into a portfolio of insourcing and outsourcing contracts using rectangular‐wave basis functions to better achieve some desired constant workload level. However, this initial selection of contracts may result in impractical options. Therefore, we also develop mathematical programs using principles from goal programming and integer programming to refine the portfolio of contracts to more accurately reflect a realistic environment by placing constraints on the available contracts and explicitly considering operational costs. We consider several modeling extensions including the ability to hold limited amounts of inventory and the use of one‐shot contracts to supplement our portfolio of recurrent contracts.     

Immobility in Moldova: Beyond the migration paradigm

This paper explores the motivations and barriers behind the decision of economically disadvantaged Moldovans to refrain from migrating for better economic prospects. Drawing on 30 qualitative interviews with voluntary stayers, it uncovers a range of individual-level characteristics that impede migration aspirations. These findings highlight the heightened sensitivity of lower-wage stayers to their perceived social status abroad, their limited adaptability to new cultures and environments and their lower willpower to endure the challenges of long-term gains. Moreover, this paper sheds light on their contentment with modest material gains and their aversion to migration risks. At the structural level, it emphasizes how social inequalities act as barriers for specific social groups, particularly the economically disadvantaged. These empirical insights challenge prevailing assumptions about the dominance of economic costs and network abroad in migration decision-making, offering a fresh perspective on the social factors and costs shaping stayers' choices.     

Multi-couple reflecting team: preliminary report

The aim of therapeutic help in marital crisis is to break the vicious circle of mutual hurtful accusations. The method that the authors present below involves a group of couples working within a closed cycle of meetings. In the course of successive group meetings, the various couples act as reflecting teams (RTs) for each other. This achieves two objectives: the couple recounting their crisis receives nonthreatening feedback, which helps them to implement positive changes and break out of the self-perpetuating destructive interaction. In addition, the couples acting as the RT learn nonjudgmental, nontheorizing and affirmative communication.     

Socioeconomic Risk in Development of Energy Systems

A soft mathematical model, taking stock of the stochastic and cooperative features of the economy of thinking in the decision making, is aggregated to unveil hidden connections between energy policy and the energy technology choices of an establishment. Starting from several assumptions on the nature of the collective decisional behavior, one obtains a probabilistic interpretation of the mechanism of penetration of energy technologies. The probability that the establishment bets on a certain technological profile is given as a solution to a Fokker-Planck equation accounting for the decision game. It provides a topological variety that accomodates possible states of the system and their trajectories, and indicates ways in which different attractors drive the technology choice in the space of the energy policy.
In this framework, a series of concepts (i.e., logistic evolution, resilience, stability, risks of disruption or crisis, energy security) can find in a natural way strikingly intuitive interpretations. Strategic games are possible on this ground, confirming facts of life and also showing predictive power. The complex and difficult to manage interdependence between energy policy and technology appears as a challenge to the long-term planning of alternative energy systems. To meet the challenge, preparedness for changes through a large freedom of choice on the technological options appears as a necessary complement to the faithful observance of the market drives, which stresses the importance of having available perceptive, coherent, reliable, and responsible mechanisms of decision making.     

The therapeutic potential of royal jelly in benign prostatic hyperplasia. Comparison with contemporary literature

The aim of this study is to establish the scientific benefit of royal jelly (RJ) on prostatic-specific antigen (PSA), post-void residual (PVR) volume and International Prostate Symptom Score (IPSS) in benign prostatic hyperplasia. For the study, a group of 40 men were administered 38?mg of RJ over a period of three months, their PSA values, prostate volumes and the volumes of their transitory prostate zones, PVR and IPPS values were measured at the end of the first month, and at the end of the third month. The results of this study confirm the potential of RJ in reducing PSA scores and improving IPSS values. Since the use of RJ did not lead to any significant reduction in PVR, prostate volume, or to any involution of the transitory zone, it appears that it may only affect the blood marker of prostatic hyperplasia and to improve quality-of-life (QoL) in those patients. Overall, in comparison to phytotherapy and conventional therapy, RJ had similar positive effects on QoL in patients with BPH, however it exhibited markedly better effects on reducing PSA levels in blood. The therapeutical use of RJ exhibited no side effects.