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Bogdan C. Bichescu Michael J. Fry George G. Polak 《Production and Operations Management》2009,18(1):33-47
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. 相似文献
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Ludmila Bogdan 《International migration (Geneva, Switzerland)》2024,62(2):199-214
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. 相似文献
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de Barbaro B Drozdzowicz L Janusz B Gdowska K Dembińska E Kołbik I Furgał M 《Journal of marital and family therapy》2008,34(3):287-297
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. 相似文献
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Bogdan Pajovic Nemanja Radojevic Antonio Dimitrovski Savo Tomovic 《The aging male》2016,19(3):192-196
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. 相似文献
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Maria Bogdan 《Identities: Global Studies in Culture and Power》2017,24(6):751-759
ABSTRACTThe Roma Press Center (RPC) is the first Roma news agency in Hungary with the goal of reducing prejudice against the Roma. Their profile has been changed throughout the years, since the technological developments of the media and the political and economic changes of the country challenged their way of effectiveness. Until recently, the RPC was always about reacting to the negative stories about the Roma and balancing this image in the media. In the last 3 years, RPC changed its attitude by becoming a proactive media organisation which directly participates in shaping the public discourse about the Roma with their work. The interview with the two decisive characters of the RPC tells about this process. 相似文献
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