[Development and Effectiveness Evaluation of Comprehensive Mobile-Based, Breastfeeding Promotion Program for Mothers with Gestational Diabetes].

PURPOSE: This study aimed to evaluate the effects of a mobile-based breastfeeding promotion program (M-BFGDM) that helps mothers with gestational diabetes. METHODS: Forty-seven mothers participated in the study, of whom 22 were in the experimental group and 25 in the control group. To verify the effects, a lag design before and after the non-equivalence control group was used. The data collection for the experimental group was done before and after the intervention. RESULTS: In the results, breastfeeding knowledge showed a significant difference in the interaction between measurement period and group (χ² = 8.14, p = .017), whereas breastfeeding intention did not show a significant difference in the interaction (χ² = 4.73, p = .094). There was no difference in self-efficacy interaction (F = 0.13, p = .856). The breastfeeding method showed no difference in interaction (F = 0.04, p = .952), whereas cross-analysis showed a significant difference in breastfeeding practice rate between the experimental group and the control group at 1 month postpartum (χ² = 7.59, p = .006). CONCLUSION: A mobile-based breastfeeding promotion program was developed and applied for gestational diabetic mothers, resulting in an increase in breastfeeding knowledge and an improvement in breastfeeding practice rate one month after childbirth. In addition, M-BFGDM managed to create a breastfeeding practice environment with fewer time and place restrictions. A program study that complements motivation is needed to improve breastfeeding in pregnant diabetic mothers in the future.

The Effects of Academic Stress and Upward Comparison on Depression in Nursing Students during COVID-19.

The coronavirus disease 2019 (COVID-19) pandemic has created a global long-term education crisis, which has negatively affected the psychological well-being of nursing students. This study aims to determine the effect of academic stress and upward comparison on depression among nursing students during the COVID-19 pandemic. A convenience sample of 271 junior and senior nursing students from four universities in South Korea was selected. The SPSS/WIN 28.0 program was employed for the data analysis, and multiple regression analysis was performed to confirm the effect of academic stress and stress from upward comparison on depression. The study results show that the regression model was significant (F = 7.60, p < 0.001). Moreover, age over 25 (ß = 0.15, p = 0.006), academic stress (ß = 0.31, p < 0.001), and upward comparison (ß = 0.18, p = 0.002) explained 19.0% of depression among the participants. Developing and testing the effect of programs that address academic stress and upward comparison may be necessary to control depression in nursing students. Furthermore, in response to COVID-19, efforts must be made to include these interventions in the curriculum for nursing students on a consistent basis.

Breastfeeding mobile application for mothers with gestational diabetes mellitus: designed by mothers and experts.

BACKGROUND: Mothers and babies with gestational diabetes have an increased risk of diabetes, obesity, and cardiovascular complications. Breastfeeding is known to help reduce complications in mothers and babies with gestational diabetes. However, the rate of breastfeeding among mothers with gestational diabetes is still low due to various barriers. Therefore, the purpose of this study was to develop a mobile application to improve the breastfeeding barrier of pregnant women with gestational diabetes. METHODS: The Method of App Selection based on Users' Needs is a method used in designing app structure and user interface by considering user needs. This method was used to develop the Breastfeeding for Gestational Diabetes Mellitus App, reflecting the needs of target users. Four personas were created based on the experiences of four mothers with gestational diabetes mellitus, and these personas' needs were assessed and prioritized. Two professors and a clinical instructor in women's health nursing conducted an expert review and revised the contents. RESULTS: Our "Breastfeeding for Gestational Diabetes Mellitus App" included the following components to promote breastfeeding in mothers with gestational diabetes mellitus: baby growth, breastfeeding records, information about mothers with gestational diabetes mellitus, information about breastfeeding, videos demonstrating breastfeeding methods and breast massage techniques, breastfeeding success stories, a message board, a section for frequently asked questions and answers, and links to breastfeeding education centers. CONCLUSIONS: Use of our App is expected to help prevent complications in mothers with diabetes mellitus and their babies and to promote maternal and child health through improved breastfeeding practices, especially in social distancing situations resulting from COVID-19.

A comparative study of cumulative stress patterns within 14 days postpartum in healthy mothers and those with gestational diabetes: A prospective study.

ABSTRACT: Although the number of mothers with gestational diabetes mellitus (GDM) is on the rise, only few studies have examined the cumulative stress associated with breastfeeding after childbirth. GDM mothers are susceptible to stress due to insulin resistance, and their level of stress is associated with breastfeeding. This study aimed to identify patterns of stress change over time in GDM mothers and healthy mothers and to identify the factors influencing those patterns.The participants of this study were mothers within 14 days after childbirth. The GDM group consisted of 32 mothers, and the healthy group comprised 30 mothers. Cumulative stress was measured in terms of heart rate variability, and linear mixed models were used to analyze changes over time.The cumulative stress of healthy mothers was about 8 points higher than that of mothers with GDM (t = -2.95, P = .005). The cumulative stress level was inversely associated with the mother's age (ß=-1.20, P = .018), the mother's weight (ß=-0.64, P = .008), and the baby's body mass index (ß=-3.09, P = .038). Furthermore, an insufficient amount of breast milk was associated with higher stress (ß=16.09, P = .007).GDM mothers and healthy mothers experienced different patterns of cumulative stress. Breastfeeding should be started quickly to promote health and stress reduction among mothers who are physically and psychologically vulnerable after childbirth.It is necessary to incorporate programs to promote breastfeeding considering stress levels at an appropriate time according to the mother's health condition.

Stability analysis for a multi-camera photogrammetric system.

Consumer-grade digital cameras suffer from geometrical instability that may cause problems when used in photogrammetric applications. This paper provides a comprehensive review of this issue of interior orientation parameter variation over time, it explains the common ways used for coping with the issue, and describes the existing methods for performing stability analysis for a single camera. The paper then points out the lack of coverage of stability analysis for multi-camera systems, suggests a modification of the collinearity model to be used for the calibration of an entire photogrammetric system, and proposes three methods for system stability analysis. The proposed methods explore the impact of the changes in interior orientation and relative orientation/mounting parameters on the reconstruction process. Rather than relying on ground truth in real datasets to check the system calibration stability, the proposed methods are simulation-based. Experiment results are shown, where a multi-camera photogrammetric system was calibrated three times, and stability analysis was performed on the system calibration parameters from the three sessions. The proposed simulation-based methods provided results that were compatible with a real-data based approach for evaluating the impact of changes in the system calibration parameters on the three-dimensional reconstruction.

Increase of yeast survival under oxidative stress by the expression of the laccase gene from Coprinellus congregatus.

Coprinellus congregatus secreted a laccase isozyme when the culture was transferred to an acidic liquid medium (pH 4.1). The laccase cDNA gene (clac2) was used as a probe for cloning of the genomic laccase gene (lac2) including the promoter (Plac2). The open reading frame (ORF) of lac2 had 526 deduced amino acids and four conserved copper binding domains as other fungal laccases. Recombinant plasmid (pRSlac2p-cDNA) of lac2 cDNA with its own promoter was transformed in Saccharomyces cerevisiae. Expression of the transformed lac2 gene was induced by oxidative stress (H2O2) in yeast and the survival rate of the transformed yeast strain was greatly increased when compared with that of the control strain transformed with pRS316 yeast vector.