The Analysis of the International Climate Change on Environmental Justice

Since the Club of Rome published "Limits to Growth" in 1972, the environmental problems have caused the attention of people around the world and become a global issue. The international community has also organized special meetings to promote the study of environmental issues. One of the most important meetings is the United Nations Conference on Environment and Development, held every year since 1972. The most important issue is on how to deal with climate change, which has become an international mainstream issue. From the perspective of the environmental justice, the following is a brief analysis of the negotiations on international climate changes, based on the opportunities of the 2009 Copenhagen Summit, the 2010 Cancun Summit and the 2011 South Africa Bender Climate Summit

Challenges and Opportunities in Parent-Teacher Relationships in Contemporary China

This study explores how market economy affects parent-teacher relationships in China. Guided by Bourdieu’s (1986) capital theory, we interviewed twenty-one teachers and twenty parents in China. The study reveals that the market economy has impacted changes in parent-teacher relationships in several aspects. First, modern technology such as the Internet and WeChat has facilitated communication between parents and teachers with fast pace and convenience. Moreover, the study makes an original contribution to the field by challenging stereotyping assumptions towards Chinese parents who are either completely not involved or partially involved in their child’s education at home. The study shows that contemporary Chinese parents are actively involved in their children’s education both at home and at school. Furthermore, the market economy has shaken the high social status that teachers enjoyed in the past. As a result, parents prefer to adopt pragmatic approaches to parent-teacher relationships. Finally, the urban, middle-class parents whose social capital, alongside cultural, symbolic and economic capital enable them to mobilize their social networks in interacting with the school. They appear to be more likely than previous generations of Chinese parents to challenge teachers’ authority, and there have been more serious conflicts between parents and teachers. The study focuses on China, but these rare insights highlight current and emerging dangers to parent-teacher engagement with relevance to many other countries

Estimation of Poisson-Dirichlet Parameters with Monotone Missing Data

This article considers the estimation of the unknown numerical parameters and the density of the base measure in a Poisson-Dirichlet process prior with grouped monotone missing data. The numerical parameters are estimated by the method of maximum likelihood estimates and the density function is estimated by kernel method. A set of simulations was conducted, which shows that the estimates perform well

A high-performance quantum dot superluminescent diode with a two-section structure

Based on InAs/GaAs quantum dots [QDs], a high-power and broadband superluminescent diode [SLD] is achieved by monolithically integrating a conventional SLD with a semiconductor optical amplifier. The two-section QD-SLD device exhibits a high output power above 500 mW with a broad emission spectrum of 86 nm. By properly controlling the current injection in the two sections of the QD-SLD device, the output power of the SLD can be tuned over a wide range from 200 to 500 mW while preserving a broad emission spectrum based on the balance between the ground state emission and the first excited state emission of QDs. The gain process of the two-section QD-SLD with different pumping levels in the two sections is investigated

Critical Reflections in International Contexts: PolyEthnographic Accounts of an International Doctoral Research Seminar

As the world becomes more globally interconnected, international partnerships, including those within higher education, have increased. In an exemplar of these international partnerships from an academic standpoint, selected doctoral students and faculty from Australian, Chinese, and Canadian universities participated in an International Doctoral Research Seminar held in China in December 2015. The objective of this seminar was to have academic debate regarding educational reform. A critical by-product of this seminar was the meaning made by the participants from this experience. This paper reviews the critical polyethnographic reflections of the Canadian participants for three salient and influential topics including the role of culture, power dynamics, and organizational systems, all in relation to this international academic partnership experience. These reflections have ramifications for future programs specifically for enhancing the international development of doctoral students under the broader umbrella of international academic partnerships

MiR-214 promotes renal fibrosis in diabetic nephropathy via targeting SOCS1

Purpose: To elucidate how miR-214 regulates the pathogenesis of diabetic nephropathy (DN). Methods: The extent of fibrosis in DN mice kidneys was examined using Masson’s staining. Quantitative polymerase chain reaction (qPCR) was used to determine the levels of miR-214. Dual luciferase reporter assay was used to identify the target of miR-214. The expression of fibrosis marker proteins of high glucose-stimulated NRK-52E cells transfected with miR-214 was determined using western blotting. Results: Fibrosis in renal tissue of DN mice was significantly increased and miR-214 was upregulated (p < 0.001). Suppressor of cytokine signaling 1 protein (SOCS1) was the target gene of miR-214, and overexpression of miR-214 promoted fibrosis (p < 0.05, p < 0.001). On the other hand, overexpression of SOCS1 inhibited this process, indicating that miR-214 promoted fibrosis via targeting SOCS1 (p < 0.001). Finally, inhibition of miR-214 c ameliorated renal fibrosis in DN mice (p < 0.01, p < 0.001). Conclusions: MiR-214 is upregulated in db/db DN mice kidney tissue; miR-214 regulates renal fibrosis in DN mice by targeting SOCS1

Critical reflections in international contexts: polyethnographic accounts of an international doctoral research seminar

As the world becomes more globally interconnected, international partnerships, including those within higher education, have increased. In an exemplar of these international partnerships from an academic standpoint, selected doctoral students and faculty from Australian, Chinese, and Canadian universities participated in an International Doctoral Research Seminar held in China in December 2015. The objective of this seminar was to have academic debate regarding educational reform. A critical by-product of this seminar was the meaning made by the participants from this experience. This paper reviews the critical polyethnographic reflections of the Canadian participants for three salient and influential topics including the role of culture, power dynamics, and organizational systems, all in relation to this international academic partnership experience. These reflections have ramifications for future programs specifically for enhancing the international development of doctoral students under the broader umbrella of international academic partnerships

Umbilical artery thrombosis: Two case reports.

RATIONALE(#br)The umbilical cord is the way to exchange gas, supply nutrients, excrete metabolized. Thrombosis of the umbilical cord leads to fetal hypoxia, which jeopardizes fetal health and can cause fetal death. Umbilical vessel thrombosis, which is rarely reported, is difficult to detect prenatally.(#br)PATIENT CONCERNS(#br)Both pregnant women had an unremarkable pregnancy course until a routine ultrasound scan in the third trimester showed a single umbilical artery. However, one umbilical vein and 2 umbilical arteries were seen during an ultrasound examination at 32 weeks. Case 2 had a better pregnancy outcome because of the timely discovery of this complication.(#br)DIAGNOSIS(#br)Both cases were diagnosed as umbilical artery thrombosis.(#br)INTERVENTIONS(#br)The first patient received no interventions until they reported decreased fetal movements and gradually disappear. The second patient underwent an emergency cesarean section.(#br)OUTCOMES(#br)In Case 1, an emergency ultrasound examination showed intrauterine fetal death, and the patient vaginally delivered a stillborn child weighing 3300 g in a day. In Case 2, a female neonate weighing 2860 g was delivered by cesarean section, and exhibited Apgar scores of 10 and 10 at 1 and 5 minutes.(#br)CONCLUSION(#br)In the late-term abortions, obstetricians should be vigilant if ultrasound imaging shows suspected umbilical vascular thrombosis or shows 1 umbilical artery when there had previously been 2. The fetus should be closely monitored and interventions implemented as early as possible to improve the prenatal detection rate of umbilical vessel thrombosis and avoid adverse pregnancy outcomes

MRI-based radiomics features uncover the micro-change of dorsal root ganglia lesion for patients with post-herpetic neuralgia

ObjectiveTo create and authenticate MRI-based radiomic signatures to identify dorsal root ganglia (DRG) lesions in post-herpetic neuralgia (PHN) patients generalizable and interpretable.MethodThis prospective diagnostic study was conducted between January 2021 and February 2022. Lesioned DRG in patients with PHN and normal DRG in age-, sex-, height-, and weight-matched healthy controls were selected for assessment and divided into two groups (8:2) randomly: training and testing sets. The least absolute shrinkage and selection operator algorithm was employed to generate feature signatures and construct a model, followed by the assessment of model efficacy using the area under the curve (AUC) of the receiver operating characteristic (ROC), as well as sensitivity and specificity metrics.ResultsThe present investigation involved 30 patients diagnosed with postherpetic neuralgia (PHN), consisting of 18 males and 12 females (mean age 60.70 ± 10.18 years), as well as 30 healthy controls, comprising 18 males and 12 females (mean age 58.13 ± 10.54 years). A total of 98 DRG were randomly divided into two groups (8:2), namely a training set (n = 78) and a testing set (n = 20). Five radiomic features were chosen to construct the models. In the training dataset, the area under the curve (AUC) was 0.847, while the sensitivity and specificity were 71.79 and 97.44%, respectively. In the test dataset, the AUC was 0.87, and the sensitivity and specificity were 80.00 and 100.00%, respectively.ConclusionAn MRI-based radiomic signatures model has the capacity to uncover the micro-change of damaged DRG in individuals afflicted with postherpetic neuralgia