22 research outputs found
The Motivation Theory of Life-Span Development and Its Implications for Career Education
Based on the Selective Optimization with Compensation (SOC) and control model, the Motivational Theory of Life-Span Development (MTLSD) proposes adaptive development criteria and objectives. It asserts that the pursuit of perpetual development is the primary control and that the life cycle is an action field with an opportunity and constraint structure of time organization. Opportunity is a process characterized by the change processes of escalating and waning and by the adaptation consistency processes of goal participation and goal separation. The MTLSD has endeavored to elucidate how people actively promote their own personal lifelong development throughout its entirety. This provides illumination for Chinaâs career education. The importance of individual initiative in career development, the process of opportunity in the continuity of career education, the difference of career education in different career (major) life cycles, and the fairness of career education during the transitional period of social mobility (opportunity) must be emphasized
The Construction of Career Education in Senior High School under the Field Perspective
In the deep-seated transformation of senior high school education catalysed by the reform of the college entrance examination, the function of career education in senior high school has garnered attention. This paper examines career education in senior high school through the lens of Bourdieu's theory of the field. It is not only significant for theoretical reconstruction but also for re-understanding of methodology. It highlights the necessity of viewing the propelling role of capital and power, particularly cultural capital, from a relational perspective within its structural context. In addition, the process is examined in terms of the significance of the distinct habits that shaped its construction and practical logic. The career field in senior high school emphasize âvalue leadershipâ and âpersonal growthâ, moulding field habits through the interplay of relationships within the field and interactions with other fields, such as the âcollege fieldâ and the âworkplace fieldâ. This interaction contributes to the development of field behaviours and stimulates the psychological field's growth and transformation. It aids actors in generating their patterns of practice, thereby attaining the dual objectives of intellectual and social construction and development
Fast and Accurate Cooperative Radio Map Estimation Enabled by GAN
In the 6G era, real-time radio resource monitoring and management are urged
to support diverse wireless-empowered applications. This calls for fast and
accurate estimation on the distribution of the radio resources, which is
usually represented by the spatial signal power strength over the geographical
environment, known as a radio map. In this paper, we present a cooperative
radio map estimation (CRME) approach enabled by the generative adversarial
network (GAN), called as GAN-CRME, which features fast and accurate radio map
estimation without the transmitters' information. The radio map is inferred by
exploiting the interaction between distributed received signal strength (RSS)
measurements at mobile users and the geographical map using a deep neural
network estimator, resulting in low data-acquisition cost and computational
complexity. Moreover, a GAN-based learning algorithm is proposed to boost the
inference capability of the deep neural network estimator by exploiting the
power of generative AI. Simulation results showcase that the proposed GAN-CRME
is even capable of coarse error-correction when the geographical map
information is inaccurate
A Tutorial on Environment-Aware Communications via Channel Knowledge Map for 6G
Sixth-generation (6G) mobile communication networks are expected to have
dense infrastructures, large-dimensional channels, cost-effective hardware,
diversified positioning methods, and enhanced intelligence. Such trends bring
both new challenges and opportunities for the practical design of 6G. On one
hand, acquiring channel state information (CSI) in real time for all wireless
links becomes quite challenging in 6G. On the other hand, there would be
numerous data sources in 6G containing high-quality location-tagged channel
data, making it possible to better learn the local wireless environment. By
exploiting such new opportunities and for tackling the CSI acquisition
challenge, there is a promising paradigm shift from the conventional
environment-unaware communications to the new environment-aware communications
based on the novel approach of channel knowledge map (CKM). This article aims
to provide a comprehensive tutorial overview on environment-aware
communications enabled by CKM to fully harness its benefits for 6G. First, the
basic concept of CKM is presented, and a comparison of CKM with various
existing channel inference techniques is discussed. Next, the main techniques
for CKM construction are discussed, including both the model-free and
model-assisted approaches. Furthermore, a general framework is presented for
the utilization of CKM to achieve environment-aware communications, followed by
some typical CKM-aided communication scenarios. Finally, important open
problems in CKM research are highlighted and potential solutions are discussed
to inspire future work
Simulation of Solidified Microstructure and Experimental Comparative Study of Twin-Roll Casting Aluminum Alloys
A coupled macro-micro mathematical model of twin-roll casting was established in the study. The continuous solidification process of Al-10Mg aluminum alloys in front of the nip point was numerically simulated by the cellular automaton method and the solidification microstructure, dendritic grain radius, and secondary dendrite arm spacing were obtained through simulation to predict the mechanical property of wedge strips. In order to verify the reliability of the simulation results, the metallographic examination and tensile tests were performed with the as-cast specimens. The results showed that the gain size, the distribution characteristics of various grain regions, dendrite arm spacing, and the yield strengths obtained from simulation were consistent with experimental results
Effects of Compound Active Peptides on Protecting Liver and Intestinal Epithelial Cells from Damages and Preventing Hyperglycemia
Active peptides have good effectiveness in controlling or preventing many diseases. Compound active peptides (CAP) obtained from animal, plant, and sea food proteins were used in this study to explore their effects on antioxidation, anti-inflammation, and antihyperglycemia in vitro and in vivo. The results demonstrated that 10âÎŒg/mL CAP could increase cell viability (P<0.05) and decrease reactive oxygen species (ROS) levels and cell apoptosis (P<0.05) when WRL68 cells were induced by H2O2 for 6âh. Moreover, incubation with 20âÎŒg/mL CAP for 6âh significantly increased cell viability and Bcl-2 expression level (P<0.05) and decreased expression levels of IL-6, IL-8, TNF-α, Bax, and Caspase 3 and the ratio of Bax/Bcl-2 (P<0.05) when swine jejunal epithelial cells (IPEC-J2) were induced by deoxynivalenol (DON). In addition, adding CAP individually or combined with Liuweidihuang pills (LDP, Chinese medicine) and low-dose glibenclamide could lower blood glucose levels in alloxan-induced hyperglycemic model mice. These results suggested that CAP was probably a beneficial ingredient for alleviating H2O2-induced oxidative stress and DON-induced cell inflammation and apoptosis and preventing hyperglycemia
Regulating properties of Cu2ZnSn(S, Se)4 absorber layer via the extra tiny Mg2+
Abstract Extra cation incorporations have been proved to enhance the properties of Cu2ZnSn(S, Se)4 materials, and help to obtain highâefficiency solar cells. In this work, the authors study the influence of the extra tiny Mg2+ doping on the properties of Cu2ZnSn(S, Se)4 films. Through tuning the amount of Mg into the precursor solution, the crystallization, morphology, light absorption, and electrical properties all have been improved and can reach the optimum at 3% Mgâdoping, which is in favour of highâperformance CZTSSe devices. The authorsâ finding also demonstrates Mg element can be regarded as the new candidate for extra cation incorporations
The Regulation of Nitric Oxide Synthase Isoform Expression in Mouse and Human Fallopian Tubes: Potential Insights for Ectopic Pregnancy
Nitric oxide (NO) is highly unstable and has a half-life of seconds in buffer solutions. It is synthesized by NO-synthase (NOS), which has been found to exist in the following three isoforms: neuro nitric oxide synthase (nNOS), inducible nitric oxide synthase (iNOS), and endothelial nitric oxide synthase (eNOS). NOS activity is localized in the reproductive tracts of many species, although direct evidence for NOS isoforms in the Fallopian tubes of mice is still lacking. In the present study, we investigated the expression and regulation of NOS isoforms in the mouse and human Fallopian tubes during the estrous and menstrual cycles, respectively. We also measured isoform expression in humans with ectopic pregnancy and in mice treated with lipopolysaccharide (LPS). Our results confirmed the presence of different NOS isoforms in the mouse and human Fallopian tubes during different stages of the estrous and menstrual cycles and showed that iNOS expression increased in the Fallopian tubes of women with ectopic pregnancy and in LPS-treated mice. Elevated iNOS activity might influence ovulation, cilia beats, contractility, and embryo transportation in such a manner as to increase the risk of ectopic pregnancy. This study has provided morphological and molecular evidence that NOS isoforms are present and active in the human and mouse Fallopian tubes and suggests that iNOS might play an important role in both the reproductive cycle and infection-induced ectopic pregnancies