Inclusive η′\eta' production in B decays and the Enhancement due to charged technipions

The new contributions to the charmless B decay $B \to X_{s}\eta^{\prime}$ from the unit-charged technipions $P^{\pm}$ and $P^{\pm}_{8}$ are estimated. The technipions can provide a large enhancement to the inclusive branching ratio: $Br(B \to X_{s}\eta^{\prime}) \sim 7\times 10^{-4}$ for $m_{p1}=100GeV$ and $m_{p8}=250 \sim 350 GeV$ when the effect of QCD gluon anomaly is also taken into account. The new physics effect is essential to interpret the CLEO data.Comment: Latex file, 7 pages with two EPS figure

The influence of legal training for doctors on medical disputes

In the context of rule by l aw in China and law based management in hospitals, it is an efficient way to reduce the occurrence of disputes through improving the medical staff professional literacy and keeping doctors abreast of the latest legal provisions concerning the rights and obligations of patients. Many studies have proposed measures to reduce medical disputes and to strengthen the legal knowledge training for medical staff. However, legal training for medical staff in Chinese medical institutions is still relatively traditional, which cannot reach the goal of reducing medical disputes. Considering the root causes of medical disputes in China, the realistic background of high incidence of medical disputes and the necessity of legal training for doctors, the following issue s are studied: (1) What are the factors that affect the effectiveness of legal training for doctors? (2) What are the impacts of training for doctors to practice by law on reducing patient complaints, medical disputes and enhancing doctors’ law awareness? This thesis adopts quantitative research methods. On the premise of analyzing 10 year data and big data of medical dispute litigation, the research data was obtained through t he doctor’s legal demand scale, the doctor’s cognition scale and the sample collection ( such as questionnaire) With SPSS statistical analysis software, all the questionnaires were analyzed by single factor, multiple factor analysis and linear regression analysis. The effectiveness evaluation of legal training for doctors adopts Kirkpatrick’s four level evaluation model , filling the application blank of the Chinese doctors’ legal training evaluation theory in the field of Kirkpatrick’s four level evaluation. The findings may be of reference significance for doctors’ legal training, reducing the incidence of medical disputes and improving the doctor patient relationship. However, due to the shortcomings of sample data an d cross sectional research design, the research results s till have some limitations.De acordo com a legislação para a governação dos hospitais há uma modo eficiente de reduzir a ocorrência de litígios através da melhoria da literacia profissional do corpo clínico providenciando lhes a informação respeitant e aos direitos e obrigações dos doentes. Autores diversos têm vindo a propor medidas para reduzir os disputas litigiosas dos médicos e todos referem a importância do fortalecimento do conhecimento jurídico na formação do corpo clínico. No entanto, a formaç ão nesta área do pessoal médico em instituições médicas chinesas ainda é relativamente tradicional, não tendo este tipo de formação atingido ainda o objetivo de reduzir significativamente os litígios. Considerando a sequência de causas dos litígios médicos na China, a constatação da alta incidência de disputas litigiosas e a necessidade de formação jurídica dos médicos, coloca questões a serem estudadas: (1) Quais são os fatores que afetam a eficácia da formação dos médicos para atuarem de acordo com a lei? (2) Quais são os impactos da formação jurídica dos médicos na redução de reclamações dos doentes, diminuindo os litígio e controvérsias e aumentando a consciencialização dos médicos sobre a legislação existente? A presente pesquisa adota método quantitativos. Foram analizados dados de 10 anos do contencioso médico. Os dados da pesquisa foram obtidos de acordo com várias escalas. Utilizando o software de análise estatística SPSS, analisamos os questionários recorrendo à análise fatorial e análise de regress ão linear simples e multifatorial. A avaliação da validade da formação jurídica dos médicos adota a avaliação dos quatro níveis de Kirkpatrick, que vem preencher as lacunas da avaliação existente da formação jurídica dos médicos chineses . As conclusões podem ser significativas e servirem de referência para a formação jurídica dos médicos, reduzindo a incidência de disputas litigiosas e melhorando a relação médico doente. No entanto, devido às limitações da amostra e design da pesquisa, os resultados apre sentam algumas limitações

A study on post pandemic marketing strategies for H comercial real state company

This study focuses on a commercial real estate investment brokerage company, utilizing decision trees, the IDIC model, binary matrices, and SWOT analysis to create a comprehensive marketing strategy based on key company data. By deeply analyzing the market environment and internal/external factors, the research aims to provide a practical market promotion plan. Using the PESTEL model for industry analysis and the SWOT model for company assessment, this study creates a comprehensive reference for shaping marketing strategies. A binary matrix outlines the business framework and identifies high-yield sectors, aiding resource allocation and market expansion.Subsequently, the IDIC model (Identification, Differentiation, Interaction, Customization) is employed to integrate customer relationship management into the marketing strategy. Effective communication and interaction are established to foster strong connections with clients, thereby enhancing loyalty and satisfaction. A decision tree model is utilized to classify and analyze clients based on historical data and market trends, enabling a better understanding of customer needs for precise target audience positioning. Clients are categorized as A, B1, B2, and C, providing a robust foundation for marketing decisions. In summary, this study employs decision trees, the IDIC model, binary matrices, and SWOT analysis to create comprehensive marketing strategies for a commercial real estate investment brokerage company. These strategies aim to enhance the company's market position and influence, providing valuable guidance for its development in a competitive landscape.Este estudo foca uma corretora de investimentos em imóveis comerciais, usando árvores de decisão, o modelo IDIC, matrizes binárias e análise SWOT para criar uma estratégia de marketing baseada em dados-chave. Analisando profundamente o mercado e fatores internos/externos, a pesquisa visa oferecer um plano prático de promoção de mercado. Com o modelo PESTEL para análise da indústria e SWOT para avaliar a empresa, este estudo cria referência abrangente para moldar estratégias de marketing. Uma matriz binária esboça o quadro de negócios e identifica setores de alto rendimento, auxiliando alocação de recursos e expansão de mercado. O modelo IDIC (Identificação, Diferenciação, Interação, Customização) é usado para integrar gerenciamento de relacionamento com cliente na estratégia. Comunicação eficaz e interação estabelecidas promovem conexões sólidas com clientes, aprimorando lealdade e satisfação. Modelo de árvore de decisão classifica e analisa clientes baseado em dados históricos e tendências de mercado, entendendo melhor suas necessidades para posicionamento preciso. Clientes são categorizados como A, B1, B2 e C, base sólida para decisões de marketing. Resumindo, este estudo usa árvores de decisão, modelo IDIC, matrizes binárias e análise SWOT para criar estratégias de marketing abrangentes para corretora de imóveis comerciais. Estratégias visam aprimorar posição de mercado e influência, fornecendo guia valioso para desenvolvimento em ambiente competitivo

Bioink properties before, during and after 3D bioprinting

Bioprinting is a process based on additive manufacturing from materials containing living cells. These materials, often referred to as bioink, are based on cytocompatible hydrogel precursor formulations, which gel in a manner compatible with different bioprinting approaches. The bioink properties before, during and after gelation are essential for its printability, comprising such features as achievable structural resolution, shape fidelity and cell survival. However, it is the final properties of the matured bioprinted tissue construct that are crucial for the end application. During tissue formation these properties are influenced by the amount of cells present in the construct, their proliferation, migration and interaction with the material. A calibrated computational framework is able to predict the tissue development and maturation and to optimize the bioprinting input parameters such as the starting material, the initial cell loading and the construct geometry. In this contribution relevant bioink properties are reviewed and discussed on the example of most popular bioprinting approaches. The effect of cells on hydrogel processing and vice versa is highlighted. Furthermore, numerical approaches were reviewed and implemented for depicting the cellular mechanics within the hydrogel as well as for prediction of mechanical properties to achieve the desired hydrogel construct considering cell density, distribution and material-cell interaction

How a Single Cell Sense its Mechanical Environment?

The extracellular matrix (ECM) is essential for regulating cell behavior and tissue function [1]. Local ECM structure and mechanics are increasingly recognized as important mechanical effectors of cell responses and tissue regeneration [2]. This is illustrated by the fact that either the rigidity of ECM [3] or local tension regulate cellular mechanotransduction pathways, and their dysregulation results in many different types of diseases [4,5]. It was speculated that cell contractions, generated by the cross-bridging interaction of actin and myosin II motors, maintain a tensional homeostasis in response to mechanical disturbance. The question is what is exactly the tensional homeostasis, if any

Contribution of Fiber Undulation to Mechanics of Three-Dimensional Collagen-I Gel

The collagen-I gel is extensively used as a scaffold material in tissue engineering due to its ability to mimic the extracellular matrix (ECM). In this study, the mechanics of collagen-I gel is investigated using a numerical model of three-dimensional collagen network. The resulted mechanical behavior was validated against the published experimental data. Results illustrated that fiber alignment was dominated in the low strain region, and its transition to stretching dominated phenomena at higher strain led to the strain stiffening of collagen gel. The collagen undulation at the microscopic level was found to delay the initiation of strain stiffenin

How a Single Cell Sense its Mechanical Environment?

The extracellular matrix (ECM) is essential for regulating cell behavior and tissue function [1]. Local ECM structure and mechanics are increasingly recognized as important mechanical effectors of cell responses and tissue regeneration [2]. This is illustrated by the fact that either the rigidity of ECM [3] or local tension regulate cellular mechanotransduction pathways, and their dysregulation results in many different types of diseases [4,5]. It was speculated that cell contractions, generated by the cross-bridging interaction of actin and myosin II motors, maintain a tensional homeostasis in response to mechanical disturbance. The question is what is exactly the tensional homeostasis, if any

Contribution of Fiber Undulation to Mechanics of Three-Dimensional Collagen-I Gel

The collagen-I gel is extensively used as a scaffold material in tissue engineering due to its ability to mimic the extracellular matrix (ECM). In this study, the mechanics of collagen-I gel is investigated using a numerical model of three-dimensional collagen network. The resulted mechanical behavior was validated against the published experimental data. Results illustrated that fiber alignment was dominated in the low strain region, and its transition to stretching dominated phenomena at higher strain led to the strain stiffening of collagen gel. The collagen undulation at the microscopic level was found to delay the initiation of strain stiffenin

Controllable energy absorption of double sided corrugated tubes under axial crushing

To maximize the controllable energy absorption of corrugation troughs as observed in the single sided corrugated (SSC) tube, we proposed and tested a new structure design, i.e., double-sided corrugated (DSC) tube made of Al 6060-T6 aluminum alloy or CF1263 carbon/epoxy composite. Finite element models were developed to test the mechanical advantage of the DSC tube in comparison with both SSC and classical straight (S) tubes under axial crushing. Results have shown that the total absorbed energy of the DSC aluminum tube with 14 corrugations was 330% and 32% higher than that of the SSC tube with 14 corrugations and the S-tube, respectively. The initiation and progression of the crushing process for different tube configurations were characterized, leading to the mechanism of energy absorption. Plastic deformation in terms of PPEQ is the key parameter correlating with the energy absorption capacity. To overcome the lower specific absorbed energy (SAE) in the DSC tube compared to that in the S-tube, the CF1263 carbon/epoxy composite laminate was adopted and the corresponding SAE was 5.9 times higher than that of the aluminum one. Moreover, the influence of the number of corrugations on the crushing behaviors of the DSC tube was also inspected. A minimal straight tube section was suggested for a controllable smooth crushing behavior regardless of its advantage in SAE. This work might shed light on designing future thin-walled energy absorber devices with better control of crushing behaviors for minimal injuries and damages