<?xml version="1.0" encoding="UTF-8"?>
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  <channel>
    <title>Yiming Wu — 随想 (Thoughts)</title>
    <link>https://yiming.us/thoughts</link>
    <description>航海手记、全栈工程思考、设计哲学与日常探究</description>
    <language>zh-CN</language>
    <lastBuildDate>Tue, 29 Sep 2026 04:17:25 GMT</lastBuildDate>
    <atom:link href="https://yiming.us/feed.xml" rel="self" type="application/rss+xml"/>
    
    <item>
      <title><![CDATA[ILCA 4 迎风航行中的舵感与风浪节律]]></title>
      <link>https://yiming.us/thoughts/ilca-4-upwind-rhythm-and-helm</link>
      <guid isPermaLink="true">https://yiming.us/thoughts/ilca-4-upwind-rhythm-and-helm</guid>
      <pubDate>Thu, 20 Aug 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[在阵风、迎风角与波浪起伏之间，寻找船体最小阻力与最大动量转换的微妙平衡。]]></description>
      <content:encoded><![CDATA[## 舵效、阵风与船体横倾

在单人激光帆船（ILCA 4）的迎风航段，舵面并不是用来生硬转向的转向机，而是一根极度敏感的风浪传感器。当你以紧密迎风（Close-hauled）切入风向角时，船帆产生的侧向推力必须通过稳向板（Daggerboard）的水动力和你的压舷力矩（Hiking）达成动态抵消。

如果一阵阵风骤起而你未能即刻通过压舷将船身扳平，船体就会发生顺风侧横倾。水下截面的非对称浸水会立即在舵上产生强烈的「上风舵」（Weather Helm）推力。过度推舵修正相当于在水下立起了一块制动闸板。

```
风向 (Wind) 
      ↓
    /⛵\  <- 船帆攻角 (Angle of Attack)
     |    <- 压舷维持平整 (Keep Hull Flat)
     |    <- 最小化舵角阻力 (Minimal Rudder Drag)
```

## 越过短涌的三个动作

在近岸水域，周期在两到三秒之间的短涌（Chop）是对动量最大的消耗源。迎风切浪不能硬顶：

1. **浪峰前的微收迎风**：在船首即将冲上浪尖的瞬间，顺势轻微向上风带一点舵，借助浮力抬升船艏并让帆获得更高的迎风角；
2. **浪尖过后的瞬时顺风切入**：船体越过波峰、开始向下俯冲的千分之一秒内，果断轻推下风舵，让船底平顺地切入浪谷，避免船底“拍浪”（Slamming）；
3. **主帆调速绳（Main Sheet）的微调呼吸**：伴随切浪节奏，收紧两寸再放松一寸，让上部帆形随阵风适度扭转（Twist）。

## 极简器械带来的纯粹专注

ILCA 的迷人之处，在于它没有任何电子传感器，没有雷达，也没有复杂的绞盘。你的大腿肌群感受的是船体浮力，掌心感受的是八倍滑轮组传来的气流脉动。

这种与物理自然界纯粹直接的反馈闭环，反过来塑造了我对软件架构的直觉：最健壮的系统往往不需要繁复的多层抽象，而是保持信号通路足够短、状态流转足够明确。]]></content:encoded>
      <category>Sailing</category>
      <category>ILCA 4</category>
      <category>Physics</category>
    </item>

    <item>
      <title><![CDATA[在极简主义与工程实用之间：重构个人站点设计系统]]></title>
      <link>https://yiming.us/thoughts/rebuilding-personal-design-system</link>
      <guid isPermaLink="true">https://yiming.us/thoughts/rebuilding-personal-design-system</guid>
      <pubDate>Tue, 01 Sep 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[抛弃花哨动效与过度配置，以 Apple HIG 原厂曲线、0ms FOUC 与本地优先为基石构建数字工艺品。]]></description>
      <content:encoded><![CDATA[## 为什么个人网站不应是组件库的堆砌

许多工程师的个人主页最终演变成了 UI 框架最新特性的展厅：三层嵌套的卡片发光边框、喧宾夺主的粒子背景，以及在移动端卡顿掉帧的重型 3D 场景。

在重新设计 yiming.us 时，我立下了一条原则：**如果一个动效不能传递物理层面的空间感与触摸反馈，就彻底删掉它。**

## 动效曲线的物理收敛

很多网站的动效让人感到焦躁，根源在于缓动曲线的不一致。系统内的弹簧阻尼与贝塞尔曲线必须有统一的收敛节奏：

- **流畅位移**：`cubic-bezier(0.22, 1, 0.36, 1)`，带来如液压阻尼般迅捷而平稳的入场；
- **触觉按压**：`cubic-bezier(0.25, 1, 0.5, 1)`，按压时的瞬时下沉与释放时的韧性回弹；
- **杜绝动画打架**：当滚动物理交给 Lenis 接管时，彻底摒弃 CSS 原生的 `scroll-behavior: smooth`，消除掉帧与震荡。

## 零闪烁暗色模式的工程解法

暗色模式最忌讳的是首屏的“白光一闪”（FOUC）。传统的客户端 `useEffect` + `localStorage` 方案必然在 React 水合阶段发生布局抖动与色彩突变。

我们采用了两道防线：
1. **服务端直出**：在 SSR 阶段通过 `next/headers` 动态解析 `theme` Cookie，直接在 `<html>` 上打上 `data-theme="dark"` 与 `class="dark"`；
2. **无依赖阻塞脚本**：在 `<head>` 中内联一段 5 行的同步代码，对首次访问者毫秒级读取系统 `prefers-color-scheme` 并锁定 DOM 状态。

## 结语

软件界面的生命力，不在于它使用了多么激进的实验性概念，而在于每一个像素的对齐、每一道光泽的明暗、以及面对高延迟与网络离线时的优雅与从容。]]></content:encoded>
      <category>Design</category>
      <category>Next.js</category>
      <category>Engineering</category>
    </item>

    <item>
      <title><![CDATA[做一款真正好用的刷题工具：C-Paper 的本地优先与设计思考]]></title>
      <link>https://yiming.us/thoughts/building-c-paper-local-first-toolkit</link>
      <guid isPermaLink="true">https://yiming.us/thoughts/building-c-paper-local-first-toolkit</guid>
      <pubDate>Thu, 10 Sep 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[告别混乱的解压包与断连的网络网盘，以 Local-First 理念为 CAIE 考生打造原生级试卷检索与双向对照体验。]]></description>
      <content:encoded><![CDATA[## 为什么要做 C-Paper？

在准备 CAIE（剑桥国际考试）的过程中，几乎每一个刷题的学生和批卷的老师都经历过这套极其折磨的仪式：

1. 打开各类散落的资源网盘或网页，等待缓慢的链接重定向；
2. 下载包含上百套题目的巨型 `.zip` 压缩包到本地；
3. 一层层解压，得到一堆以代号命名的杂乱文件：`9709_s21_qp_12.pdf`、`9709_s21_ms_12.pdf`；
4. 为了对照答案，必须在桌面上同时平铺好几个 PDF 阅读器窗口，反复在试卷题干与 Marking Scheme 之间来回切屏比对；
5. 最终，你的“下载”文件夹堆积成了无法整理的数字垃圾场。

工具本应消解日常的阻力，而不是成为专注的敌人。C-Paper 的诞生，就是为了用极简的工程架构，把这一切琐碎磨损收敛为一个轻盈、即开即用的闭环。

```
传统流程: 网页翻找 → 巨型 Zip 下载 → 手动逐层解压 → 杂乱命名 → 双窗口手动切屏
C-Paper:  代码秒级定位 → 免解压双向分栏预览 → 多线程并发拉取 → 标准多级本地归档
```

## 本地优先（Local-First）与纯粹无干扰

在设计之初，我们就确立了 C-Paper 的第一工程原则：**本地优先（Local-First），不设任何多余的云端羁绊。**

- **零账户门槛**：你不需要注册账号，也不需要手机号验证码。打开即用，专注学习；
- **零隐私上报**：你的检索历史、科目偏好与收藏书签全部留在 macOS 本地应用程序沙箱中，没有后台埋点或使用分析；
- **免解压矢量对照渲染**：内置自研轻量解包与矢量 PDF 管道，直接在应用内呈现双栏视图——左侧查看试卷题目，右侧联动滚动对照评分标准，边刷题边对答案；
- **智能去重与规范归档**：多任务并发拉取时自动比对本地文件指纹，自动跳过重复卷号；下载完成自动生成“科目代码 / 年份 / 考季 / 卷号”标准目录，让你的题库整整齐齐。

## 界面与交互的克制之道

很多桌面软件喜欢在界面里堆砌复杂的侧边栏、炫酷的仪表盘和冗余的配置开关。但在备考与刷题场景下，**最优秀的界面应当是“隐形的”**。

在 macOS 版 C-Paper 的界面交互中，我们严格遵循了 Apple HIG 的原生质感：
- 沉浸式的半透明毛玻璃材质与细腻的发丝分界线；
- 遵循物理弹簧阻尼的微动效，按压回弹毫不拖泥带水；
- 适配 macOS 浅色与深色模式，在夜间复习时提供舒适护眼的视觉对比度。

## 结语

做软件最令人愉悦的时刻，莫过于看到一个原本混乱、痛苦的现实流程，被一段干净的代码和考究的设计梳理得井井有条。C-Paper 现已发布 macOS 版，更多科目与特性持续演进中。]]></content:encoded>
      <category>Product</category>
      <category>macOS</category>
      <category>Local-First</category>
    </item>

    <item>
      <title><![CDATA[Parenting Styles and Adolescent Self-Esteem: Unveiling the Significant Roles of Grade Level and Birth Order]]></title>
      <link>https://yiming.us/thoughts/parenting-styles-adolescent-self-esteem</link>
      <guid isPermaLink="true">https://yiming.us/thoughts/parenting-styles-adolescent-self-esteem</guid>
      <pubDate>Tue, 01 Sep 2026 00:00:00 GMT</pubDate>
      <description><![CDATA[]]></description>
      <content:encoded><![CDATA[- **First Author:** Yiming Wu
- **Co-Authors / Team Members:** Jingxiang Zhang, Yixiu Luo, Pengyu Yan

* Word Count: 1497 Words*

---

## Abstract

This study examines the predictors of adolescent self-esteem, testing Baumrind's (1991) framework on parenting styles against developmental factors. Data from 51 students (Grades 7–13) were analyzed using Bootstrap multiple regression to address non-normality and sample size limitations. While descriptive statistics supported the view that authoritative parenting yields higher self-worth, the regression revealed no statistically significant main effect for parenting styles. Instead, results aligned with Robins et al. (2002), identifying Grade level as a robust positive predictor, supporting the hypothesis that self-esteem matures with age. Additionally, Birth Order emerged as significant, with youngest children reporting higher self-esteem than firstborns. These findings suggest that developmental maturity and family roles may exert a stronger influence on self-esteem than parenting styles alone.

**Keywords:** Self-esteem, Parenting Styles, Bootstrap Regression, Birth Order, Adolescence, Maturation Principle

## 1 Introduction

Self-esteem is a critical psychological barometer for adolescents. It is a fundamental predictor for self-achievement, academic achievement and mental well-being. Self-esteem is determined and affected by many factors, one of which is family context, specifically the style of parenting authority.

Style of parenting has often been viewed as primary constructor of adolescent's self-worth. Diana Baumrind in her article *The influence of Parenting Styles on Adolescent Competence and Substance Use* (Baumrind, 1991) introduced the concept of three parenting styles: authoritative, authoritarian and permissive. Among these, authoritative parenting is most commonly linked with positive self-esteem development outcomes. The research done by Milevsky, Schlechter, Netter and Keehn (2007) reinforced the view that adolescents raised in authoritative households showed significantly higher self-esteem compared with the other two. Based on these established frameworks, our primary hypothesis points that students perceiving their parents as authoritative will report the highest levels of self-esteem.

However, viewing adolescent growth solely on parenting styles is too simplistic. As individuals mature, their self-worth can be affected by other factors such as their own development stage and their role in the family structure. From the development perspective Robins et al. (2002) suggested that self-esteem is not static, it increases as individuals mature, therefore stating that the student's grade level is also a significant predictor of self-worth.

Furthermore, a family structure not only consists of parent-child dyad. Siblings and birth order also comes into consideration. Adler (1956) in his work on individual psychology argued that birth order significantly influences personality formation. He suggests that the youngest child often receives extra attention and protection, potentially buffering them against pressures faced by firstborns. Therefore, we also hypothesize that situational factors such as grade level and family roles will exert different effects on adolescents' self-esteem. To ensure a robust conclusion, this study uses Bootstrap multiple regression analysis to rigorously test these relationships.

## 2 Methodology

### 2.1 Participants and Procedure

In order to analyze the relationship between the type of parent and students' self-esteem, we use two authoritative questionnaires, the one is Rosenberg Self-Esteem Scale (RSES), and the one is the parental authority questionnaire to collect data. During this process, we collected 51 students who come from G7 to G13. That is, the quantity of data is a limited sample size to support conducting traditional multiple regression, which needs plenty of data to make a Gaussian distribution in order to make conclusions more accurate. So we found another analysis method to address the limitation, "Bootstrap multiple regression and BCa 95% Confidence Interval".

## 3 Results

### 3.1 Preliminary Analysis: Control of Demographic Variables

To rule out confounding effects, One-way ANOVA was first conducted. Results indicated no significant main effects for Primary Caregiver (F = 0.51, p = .605) or Birth Order (F = 2.17, p = .104) on self-esteem. As previously reported, Grade also did not show significance in standard ANOVA (p = .235).

However, the subsequent Bootstrap regression analysis (Table 3) revealed more nuanced findings:

- Grade emerged as a significant positive predictor of self-esteem (Coefficient = 0.99, 95% BCa CI [0.03, 2.22]), suggesting that self-esteem tends to increase with grade level.
- Birth Order showed a specific effect: being the "Youngest" child significantly predicted higher self-esteem compared to the firstborn (Coefficient = 4.09, 95% BCa CI [0.01, 9.49]), a pattern not detected by the standard ANOVA.

**Table 1** One-way ANOVA Results for Grade

| Cases | Sum of Squares | df | Mean Square | F | p | η² |
|---|---|---|---|---|---|---|
| Grade | 281.5 | 6 | 46.92 | 1.404 | .234 | 0.161 |
| Residuals | 1470.2 | 44 | 33.41 | — | — | — |

*Note. Type III Sum of Squares.*

### 3.2 Main Effect of Parenting Styles

Descriptive statistics showed that adolescents raised in Authoritative families reported the highest self-esteem (M = 29.62), followed by Authoritarian (M = 28.57) and Permissive (M = 26.80) families. This trend aligns with the theoretical expectation that authoritative parenting fosters the highest self-worth.

**Figure 1** Mean self-esteem scores across three parenting styles

![Figure 1 Mean self-esteem scores across three parenting styles](/api/media/uploads/2026-09-01/552098ed-26a0-4e5a-933d-18339ae338bd.png)

Standard One-way ANOVA indicated that the differences between these groups were not statistically significant (F(2, 48) = 0.89, p = .419).

**Table 2** One-way ANOVA Results for Parenting Styles

| Cases | Sum of Squares | df | Mean Square | F | p | η² |
|---|---|---|---|---|---|---|
| Parenting | 62.34 | 2 | 31.17 | 0.886 | .419 | 0.036 |
| Residuals | 1689.34 | 48 | 35.19 | — | — | — |

*Note. Type III Sum of Squares.*

### 3.3 Bootstrap Regression Analysis

To further explore the predictors of self-esteem while handling non-normality, a Bootstrap linear regression (10,000 resamples) was conducted. The model included Parenting Style, Birth Order, Caregiver, and Grade.

As shown in Table 3, when using "Authoritarian" as the reference group:

- Neither Authoritative (Coef = 1.11) nor Permissive (Coef = 0.77) styles showed a significant difference from the reference group (Significant = False), confirming the ANOVA result.
- The model highlights that in this sample, Grade was a robust predictor. The bootstrap distribution of the Grade coefficient is centered around a positive value, with the confidence interval excluding zero.

**Figure 2** Bootstrap distribution of the regression coefficient for Grade. The 95% Confidence Interval excludes zero, indicating a significant positive relationship.

![Figure 2 Bootstrap distribution of the regression coefficient for Grade](/api/media/uploads/2026-09-01/615bab47-af69-4227-bb13-cdfc6fdc5e3a.png)

**Table 3** Bootstrap Coefficients and Confidence Intervals

| Predictor | Coefficient (B) | 95% CI (Lower) | 95% CI (Upper) |
|---|---|---|---|
| Constant | 16.22 | 0.87 | 28.01 |
| Grade Level | 0.99* | 0.03 | 2.22 |
| Parenting Style (Ref: Authoritarian) | | | |
| &nbsp;&nbsp;&nbsp;&nbsp;Authoritative | 1.11 | -2.55 | 7.19 |
| &nbsp;&nbsp;&nbsp;&nbsp;Permissive | 0.77 | -4.79 | 7.72 |
| Birth Order (Ref: Firstborn) | | | |
| &nbsp;&nbsp;&nbsp;&nbsp;Middle Child | -4.85 | -13.64 | 1.29 |
| &nbsp;&nbsp;&nbsp;&nbsp;Only Child | 0.57 | -3.93 | 5.97 |
| &nbsp;&nbsp;&nbsp;&nbsp;Youngest Child | 4.09* | 0.01 | 9.49 |
| Primary Caregiver (Ref: Mother) | | | |
| &nbsp;&nbsp;&nbsp;&nbsp;Father | 2.54 | -2.83 | 8.17 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other | 1.27 | -4.8 | 4.96 |

## 4 Discussion

### 4.1 The "Authoritative Advantage" Trend

Although the main effect of parenting style did not reach statistical significance (p > .05), the descriptive patterns observed in this study align with Baumrind's (1991) typology. Adolescents raised in Authoritative households reported the highest self-esteem (M = 29.62), while those in Permissive households reported the lowest (M = 26.80). This suggests that a combination of parental warmth and clear behavioral standards provides the optimal environment for self-esteem development. The lack of statistical significance likely reflects the limited sample size rather than the absence of an effect, as the numerical trend is consistent with established literature.

### 4.2 Cultural Context: The Function of Authoritarian Parenting

A notable finding is that adolescents from Authoritarian families reported relatively high self-esteem (M = 28.57), ranking second only to the Authoritative group. This contradicts early Western studies that often linked authoritarianism with poor self-concept. This discrepancy can be interpreted through the lens of Chao (1994), who argued that in Chinese cultural contexts, strict control is often synonymous with "Guan" (training/care). For the students in this sample, high parental demands may be perceived as an expression of parental involvement and high expectations rather than hostility, thus preserving their academic self-efficacy and overall self-esteem.

### 4.3 The "Maturation Effect": Grade Level as a Predictor

A key finding from the Bootstrap analysis was that Grade level significantly positively predicted self-esteem. This supports the "Maturation Principle" described by Robins and Trzesniewski (2005), who found that self-esteem typically increases from adolescence through young adulthood. As students progress from Grade 7 to Grade 13, they gain greater autonomy, improved coping skills, and a more stable sense of identity. This study suggests that as adolescents mature, these developmental factors may exert a stronger influence on their self-worth than early parenting styles.

### 4.4 Birth Order: The "Youngest Child" Advantage

Unexpectedly, being the "Youngest" child was a significant predictor of higher self-esteem compared to firstborns. While Adler (1956) historically suggested that youngest children might struggle with inferiority or dependency, more recent reviews (e.g., Eckstein et al., 2010) indicate that birth order effects are complex and context-dependent. In the current high-pressure academic environment, youngest children may benefit from a "psychological buffer"—receiving high affection and support from parents and older siblings while facing less immediate pressure to achieve compared to firstborns. This "benign" position in the family niche may contribute to their higher reported self-esteem.

### 4.5 Limitations

Several limitations warrant consideration. First, the modest sample size (N = 51) likely constrained the statistical power to detect a significant main effect for parenting styles, despite the observed descriptive trends. Second, reliance on self-report data introduces potential social desirability bias. Finally, the cross-sectional design precludes causal inferences, particularly regarding the observed "maturation effect" of grade level. Future research should employ larger, longitudinal samples to validate these developmental patterns.

## 5 Conclusion

In conclusion, this study demonstrates that adolescent self-esteem is driven by more than just parenting styles. While descriptive data favored authoritative parenting, statistical analysis identified Grade level and Birth order as the primary predictors. The positive correlation between Grade and self-esteem supports the "Maturation Principle," indicating that self-worth grows with autonomy. Additionally, the significant advantage found for the youngest children suggests a protective family role. These results imply that as adolescents develop, individual maturity and family structure may outweigh the direct impact of parenting style. Future research with larger samples is recommended to further explore these developmental dynamics.

## Author Contributions

Y. Wu conceptualized and designed the study, performed the statistical analysis (including ANOVA and Bootstrap regression), wrote the Results and Discussion sections, revised the manuscript, and was responsible for final formatting and proofreading. J. Zhang was responsible for the Methodology section and assisted with data collection. Y. Luo drafted the Introduction section and contributed to the literature review. P. Yan wrote the Abstract and Conclusion sections and assisted with data collection. All authors reviewed and approved the final manuscript.

## References

Adler, A. (1956). *The Individual Psychology of Alfred Adler: A systematic presentation of selections from his writings* (H. L. Ansbacher & R. R. Ansbacher, Eds.). Basic Books.

Baumrind, D. (1991). The influence of parenting style on adolescent competence and substance use. *Journal of Early Adolescence, 11*(1), 56–95.

Milevsky, A., Schlechter, M., Netter, S., & Keehn, T. (2007). Maternal and paternal parenting styles in adolescents: Associations with self-esteem, depression and life-satisfaction. *Journal of Child and Family Studies, 16*(2), 39–47.

Robins, R. W., Trzesniewski, K. H., Tracy, J. L., Gosling, S. D., & Potter, J. (2002). Global self-esteem across the life span. *Psychology and Aging, 17*(3), 423–434.

Chao, R. K. (1994). Beyond parental control and authoritarian parenting style: Understanding Chinese parenting through the cultural notion of training. *Child Development, 65*(4), 1111–1119.

Eckstein, D., & Kaufman, J. A. (2012). The role of birth order in personality: An enduring intellectual legacy of Alfred Adler. *Journal of Individual Psychology, 68*(1), 60–74.

Maccoby, E. E., & Martin, J. A. (1983). Socialization in the context of the family: Parent-child interaction. In P. H. Mussen (Ed.), *Handbook of child psychology* (Vol. 4, pp. 1–101). Wiley.

Robins, R. W., & Trzesniewski, K. H. (2005). Self-esteem development across the lifespan. *Current Directions in Psychological Science, 14*(3), 158–162.
]]></content:encoded>
      <category>IPQ</category>
      <category>Psychology</category>
    </item>
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