Yes, solving previous years' papers of UPSC Management optional subject can help in improving understanding of human resource development concepts in the following ways:

1. Familiarity with Exam Pattern:
- Solving previous years' papers gives you an idea about the exam pattern, question types, and the level of difficulty.
- It helps you understand the areas of focus and the weightage given to different topics in the syllabus.
- This familiarity with the exam pattern allows you to strategize your preparation accordingly.

2. Exposure to a Wide Range of Questions:
- Solving previous years' papers exposes you to a wide range of questions related to human resource development.
- You get to practice different types of questions such as multiple-choice, short answer, and essay-based questions.
- This helps in improving your understanding of concepts by applying them to various scenarios and contexts.

3. Identification of Important Topics:
- By analyzing previous years' papers, you can identify the important topics and concepts that are frequently asked in the exam.
- This helps in prioritizing your study material and focusing on the areas that are more likely to be tested.
- It also gives you an understanding of the depth of knowledge required for each topic, allowing you to allocate your time and resources efficiently.

4. Revision and Reinforcement of Concepts:
- Solving previous years' papers serves as a comprehensive revision exercise.
- It helps you revisit the concepts and theories you have studied, reinforcing your understanding and retention.
- It also highlights any gaps in your knowledge, enabling you to focus on those areas during your revision.

5. Time Management and Exam Strategy:
- Solving previous years' papers helps you practice time management skills by attempting questions within the time limits.
- It familiarizes you with the pressure of completing the exam within a specified time frame.
- This practice enhances your speed and accuracy, allowing you to perform better in the actual exam.

Conclusion:
Solving previous years' papers of UPSC Management optional subject is an effective strategy to improve your understanding of human resource development concepts. It provides familiarity with the exam pattern, exposure to a wide range of questions, identification of important topics, revision of concepts, and practice in time management. By incorporating this practice into your preparation strategy, you can enhance your chances of success in the UPSC exam.