Evaluation of stresses in a combined plane strain-simple shear test

A biaxial testing device for sheet metal has been developed that can impose a combination of\ud plane strain and simple shear deformation. The specimen has a large width to height ratio and a small height\ud to thickness ratio. The forces in tensile and shear direction are easily measured and the tensile stress and shear\ud stress can easily be derived. For a full description of stresses, however, the stress in lateral direction should also\ud be known. This stress is a result of the constraint, imposed by the large width to height ratio and cannot be\ud measured directly. The strain in the specimen is measured on the surface. By imposing the Drucker normality\ud principle, the direction of the tangent to the yield surface is known and the unknown stress increment in lateral\ud direction can be obtained. Computer simulations are performed to test whether the intended approach can\ud recalculate all stress components from measurement of 3 in-plane strains and just 2 stresses. Without hardening,\ud good results are obtained for a complete interval between the pure shear point up to a point between uniaxial\ud stress and the plane strain point on the yield locus. With hardening, the algorithm requires a lot of data points\ud to avoid drifting from the exact solution. It is noted that, although the normality rule is used, it is not necessary\ud to have an a-priori knowledge of the yield functio

Sensemaking from Actions

This study presents a method to establish empirically what drives organization members in their day-to-day behavior. The method starts from the sense employees make of their own actions. The approach consists of two steps: qualitative laddering interviews to determine the most central means and ends that play a role in the sensemaking of organization members, and a follow-up survey to examine in depth the organizational means-end structure. The method was validated by relating the results to independently observed indicators of what guides organization members in their behavior. Apart from the deeper insight it provides in the forces that drive day-to-day behavior in an organization, the method also provides management with a practical tool for addressing employee motivation and for developing credible communication toward stakeholders.employee motivation;laddering;means-end analysis;organizational action;sensemaking

Improvement in pig growth and feed conversion due to knowledge transfer about disease prevention and improving immune response

The ability of pigs to avoid illness can be influenced by pig farmers via management measures which prevent stress and introduction and spread of diseases. A training program consisting of three meetings, was developed to achieve more consciousness at pig farmers about their influence on disease prevention and the immune response of their pigs. We tested the effect of the training program on the average daily gain in weight, feed conversion, the mean percentage of lymphocytes and I-FABP values

The CSR-Quality Trade-off: When Can Corporate Social Responsibility and Corporate Ability Compensate Each Other?

This paper investigates under what conditions a good corporate social responsibility (CSR) can compensate for a relatively poor corporate ability (CA) (quality), and vice versa. The authors conducted an experiment among business administration students, in which information about a financial services company’s CA and CSR was provided. Participants indicated their preferences for the company’s products, stocks, and jobs. The results show that for stock and job preferences, a poor CA can be compensated by a good CSR. For product preferences, a poor CA could not be compensated by a good CSR, at least when people thought that CA is personally relevant to them. Furthermore, a poor CSR could be compensated by a good CA for product, stocks, and job preferences

Sensemaking from Actions

This study presents a method to establish empirically what drives organization members in their day-to-day behavior. The method starts from the sense employees make of their own actions. The approach consists of two steps: qualitative laddering interviews to determine the most central means and ends that play a role in the sensemaking of organization members, and a follow-up survey to examine in depth the organizational means-end structure. The method was validated by relating the results to independently observed indicators of what guides organization members in their behavior. Apart from the deeper insight it provides in the forces that drive day-to-day behavior in an organization, the method also provides management with a practical tool for addressing employee motivation and for developing credible communication toward stakeholders

Targeted experiment design using the posterior predictive distribution

Abstract only

Еліпсис – один із найважливіших шляхів поповнення складу мінімальних фразеологічних одиниць

Стаття присвячена актуальній науковій проблемі, пов'язаній із аналізом спеціального фрагмента фразеологічного корпусу української мови - мінімальним ідіомам. Описуються два види фразеологічного еліпсиса.Статья посвящена актуальной научной проблеме, связанной с анализом специального фрагмента фразеологического корпуса украинского языка - минимальным идиомам. Описываются два вида фразеологического элипсиса.The article is dedicated to the scientific actual problem, connected with the analysis of special fragment in phraseological structure of the Ukrainian language - minimal idioms. Two types of phraseological ellipsis described

Blue light phototherapy for Psoriasis from a systems biology perspective

This work analyses the effect of UV-free blue light (BL) irradiation of the skin using mathematical modelling. Prior research has shown that blue light reduces the proliferation of keratinocytes by inducing their differentiation, and causes apoptosis of lymphocytes. The effects of blue light on these cells make it an attractive phototherapy alternative for inflammatory skin conditions, such as psoriasis. Nevertheless, the exact process by which BL affects these cells is not fully understood. A modelling approach may give further insight to understanding how BL irradiation of psoriatic skin leads to the control of the disease. However, no mathematical model is available describing this phenomenon. Two deterministic models were therefore made to describe the epidermal kinetics and interaction between keratinocytes and lymphocytes under the effect of BL irradiation; focusing mainly on the case of psoriasis. We employed a systems biology approach to characterize the effect of BL irradiation of the skin. Since in phototherapy parameters such as fluence and power have a strong impact on the outcome, a parameter sensitivity analysis (PSA) was performed to estimate a range of fluence and power at which BL phototherapy could be successful. The models results suggest that the management of psoriasis is achieved by inducing symmetric differentiation of the keratinocytes in the epidermal proliferative compartment. It is observed that BL irradiation of psoriatic skin decreases the density of keratinocytes and transiently increases the density of lymphocytes, leading to the regulation of the interaction between these two cell types. The PSA of the models predicts that the higher the peak power the better the outcome of the BL phototherapy with a dose of 90J/cm2 per day. This systems biology approach provides additional insight into the use of BL phototherapy for inflammatory skin disorders