catalogue

Part One Unit Overview

1. Unit Responsibilities

2. Unit Budget Unit Composition

Main Work Tasks for 2024

Part 2 2024 Budget Statement

（1） Unit Budget Table

1. Summary of Income and Expenditure for 2024 of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall)

2. Summary of 2024 Revenue for the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall)

3. Summary of 2024 Expenditure by the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall)

4. Summary of 2024 Financial Allocation for the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall)

5. General Public Budget Expenditure Table for 2024 of the Management Office of the Cross River Campaign Memorial Hall (Anhui Celebrity Hall)

6. General Public Budget Basic Expenditure Table for 2024 of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall)

7. Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) 2024 Government Fund Budget Expenditure Table

8. Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) 2024 State owned Capital Operating Budget Expenditure Table

9. Summary of Basic Expenditure for 2024 of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall)

10. Summary of Project Expenditure for 2024 of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall)

11. Government Procurement Expenditure Table for 2024 of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall)

12. Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) Government Procurement Service Expenditure Table for 2024

13. Performance Objectives and Project Status Table of 2024 Project Expenditure for the Management Office of the Crossing of the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall)

14. Budget Table for 2024 "Three Public" Expenses of the Management Office of the Crossing of the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall)

（2） Budget Table for Transfer Payment

15. Summary Table of 2024 Municipal Transfer Payment Budget for the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall)

16. Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall), 2024 Municipal Transfer Payment Budget Details Table

Part III Explanation of Unit Budget for 2024

1. Explanation on the overall situation of the 2024 income and expenditure budget

2. Explanation on the 2024 Revenue Budget Situation

3. Explanation on the expenditure budget for 2024

4. Explanation on the overall situation of the 2024 fiscal appropriations revenue and expenditure budget

5. Explanation on the General Public Budget Allocation for 2024

6. Explanation on Basic Expenditure of General Public Budget in 2024

7. Explanation on the Budget Allocation of Government Funds in 2024

8. Explanation on the Allocation of State owned Capital Operating Budget in 2024

9. Explanation on the 2024 Project Expenditure Budget

10. Explanation on the Government Procurement Budget for 2024

11. Explanation on the Budget for Government Procurement of Services in 2024

12. Explanation on the Budget for "Three Public" Expenses in 2024

13. Explanation of other important matters

Part Four Explanation of 2024 Transfer Payment Budget

Part 5: Definition of Nouns

Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall)

Unit budget for 2024

Part One Unit Overview

1、 Unit Responsibilities

（1） Implement the laws, regulations, and policies of the Party and the state on the work of cultural relics and museums.

（2） Responsible for the open management of the Cross River Campaign Memorial Hall, promoting historical revolutionary culture, providing revolutionary exhibitions, explanations, and other services to the public, and conducting social education activities.

（3） Responsible for the open management of Anhui Celebrity Hall, promoting Anhui celebrity culture, providing services such as Anhui celebrity exhibition and explanation to the public, and conducting social education activities.

2、 Unit Budget Unit Composition

There is one unit included in the budget preparation scope of the 2024 Crossing the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall) Management Office, which is a public institution. As of December 31, 2023, the management office of the Cross River Campaign Memorial Hall (Anhui Celebrity Hall) has 74 personnel of various types, including 74 in service, 0 retired, and 0 retired.

3、 Main Work Tasks for 2024

（1） Enhance the operational capability of the venue. Continue to persistently carry out open operation; Solidly carry out the construction of 4A scenic spots and the creation of civilization, gradually improving the service level of the two museums.

（2） Continuously strengthen publicity and education. Collaborate with universities to establish a practical teaching base for ideological and political courses, develop case studies on the spirit of crossing the Yangtze River, carry out online and offline activities to welcome festivals such as the founding of the Communist Party on July 1st, the establishment of the military on August 1st, and the National Day holiday, promote the introduction of the "Red Pavilion" propaganda team and red commentators to campuses, and continue to promote the red propaganda of the spirit of crossing the Yangtze River. Utilize time nodes such as Celebrity Memorial Day and 930 Martyrs Memorial Day to strengthen publicity and expand the audience for patriotism and traditional education.

（3） Organize high-quality exhibitions. Continue to hold the original exhibition "Monument of Faith - Legend of Red Anhui Agents" tour event. Preparing special exhibitions such as "Glorious Model Deng Xiaoping - Commemorating the 120th Anniversary of Comrade Deng Xiaoping's Birth" and "Pursuing Dreams for a Century from 35 to 350 Kilometers per Hour".

Part 2 Unit Budget Table for 2024

The 2024 budget table for the management office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) consists of the following 16 tables. Please refer to the attachment for specific table contents.

（1） Unit Budget Table

1. Summary of Unit Income and Expenditure in 2024 for the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) (Attachment Table 1)

2. Summary of Unit Income for 2024 of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) (Attachment Table 2)

3. Summary of Unit Expenditure for 2024 of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) (Attachment Table 3)

4. Summary of 2024 Unit Financial Allocation Revenue and Expenditure of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) (Attachment Table 4)

5. General Public Budget Expenditure Table for 2024 of the Management Office of the Cross River Campaign Memorial Hall (Anhui Celebrity Hall) (Attachment Table 5)

6. Basic Expenditure Table of General Public Budget of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) in 2024 (Attachment Table 6)

7. Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) 2024 Unit Government Fund Budget Expenditure Table (Attachment Table 7)

8. Management Office of the Cross River Campaign Memorial Hall (Anhui Celebrity Hall) 2024 Unit State owned Capital Operating Budget Expenditure Table (Attachment Table 8)

9. Summary Table of Basic Unit Expenditure for 2024 of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) (Attachment Table 9)

10. Summary of Unit Project Expenditure for 2024 of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) (Attachment Table 10)

11. Management Office of the Cross River Campaign Memorial Hall (Anhui Celebrity Hall) Government Procurement Expenditure Table for 2024 (Attachment Table 11)

12. Management Office of the Cross River Campaign Memorial Hall (Anhui Celebrity Hall) 2024 Unit Government Purchase Service Expenditure Table (Attachment Table 12)

13. Performance Objectives and Project Status Table of Unit Project Expenditure in 2024 for the Management Office of the Crossing of the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall) (Attachment Table 13)

14. Budget Table for Unit "Three Public" Expenditure of the Management Office of the Crossing of the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall) in 2024 (Attachment Table 14)

（2） Budget Table for Transfer Payment

15. Summary Table of 2024 Municipal Transfer Payment Budget for the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) (Attachment Table 15)

16. Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall), 2024 Municipal Transfer Payment Budget Detail Table (Attachment Table 16)

Part III Explanation of Unit Budget for 2024

1、 Explanation on the Overall Situation of 2024 Revenue and Expenditure Budget

According to the principle of comprehensive budget, all income and expenses of the management office of the Crossing of the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall) are included in the unit budget management. The total budget for the management office of the Crossing of the Yangtze River Battle Memorial Hall (Anhui Celebrity Hall) in 2024 is 31.3498 million yuan (excluding advance orders, the same below), all of which is from general public budget appropriations. The expenditure includes 29.6137 million yuan for cultural, tourism, sports, and media expenses, 839700 yuan for social security and employment expenses, 215800 yuan for health expenses, and 680500 yuan for housing security expenses.

2、 Explanation on the 2024 Revenue Budget Situation

The management office of the Crossing of the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall) has a revenue budget of 31.3498 million yuan in 2024, all of which is from general public budget appropriations. This is a decrease of 5.223 million yuan or 14.28% compared to the 2023 budget, mainly due to the fact that some projects from the previous year do not need to be implemented this year.

3、 Explanation on the expenditure budget for 2024

The management office of the Crossing of the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall) has a budget of 31.3498 million yuan for 2024, a decrease of 5.223 million yuan or 14.28% compared to the 2023 budget. The main reason for the decrease is that some projects from the previous year do not need to be executed this year. Among them, the basic expenditure was 10.7252 million yuan, accounting for 34.21%, mainly used to ensure the daily operation of the institution and complete daily work tasks; The project expenditure is 20.6245 million yuan, accounting for 65.79%, mainly used for the daily opening maintenance and research of the museum.

4、 Explanation on the Overall Situation of the 2024 Financial Allocation Budget for Revenue and Expenditure

The management office of the Crossing of the Yangtze River Battle Memorial Hall (Anhui Celebrity Hall) has a budget of 31349800 yuan for fiscal appropriations in 2024. Revenue is divided into general public budget appropriations based on the source of funds; According to the funding year, all of it is allocated as fiscal revenue for the current year.

The expenditure is classified by function as follows: cultural tourism, sports and media expenditure of 29.6137 million yuan, accounting for 94.46%; Social security and employment expenditures amounted to 839700 yuan, accounting for 2.68%; Health expenditure was 215800 yuan, accounting for 0.69%; Housing security expenditure was 680500 yuan, accounting for 2.17%.

Compared with the 2023 budget, the total revenue and expenditure have decreased by 5.223 million yuan each, a decrease of 14.28%. Main reasons: Firstly, some projects from the previous year do not need to be executed this year; The second is the reduction of funds for some projects this year.

5、 Explanation on the General Public Budget Allocation for 2024

（1） Changes in the scale of general public budget appropriations.

The management office of the Crossing of the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall) allocated a general public budget of 31.3498 million yuan in 2024, a decrease of 5.223 million yuan or 14.28% compared to the 2023 budget allocation. The main reason is that some projects from the previous year do not need to be executed this year; The second is the reduction of funds for some projects this year.

（2） The structure of general public budget appropriations.

Cultural, tourism, sports, and media expenditures amounted to 29.6137 million yuan, accounting for 94.46%; Social security and employment expenditures amounted to 839700 yuan, accounting for 2.68%; Health expenditure was 215800 yuan, accounting for 0.69%; Housing security expenditure was 680500 yuan, accounting for 2.17%.

（3） Specific usage of general public budget appropriations.

1. The budget for cultural tourism, sports, and media expenditures (category), cultural relics, museums, etc. in 2024 is 29.6137 million yuan, a decrease of 5.1635 million yuan or 14.85% compared to the 2023 budget. The main reason for the decrease is that some projects from the previous year do not need to be executed this year.

2. Social security and employment expenditures (category) Administrative institutions' pension expenditures (funds) Government institutions' basic pension insurance payment expenditures (items) The budget for 2024 is 559800 yuan, a decrease of 19300 yuan or 3.33% from the 2023 budget, mainly due to a decrease in the number of employed personnel.

3. Social security and employment expenditures (category) Administrative institutions' pension expenditures (funds) Government institutions' occupational annuity payment expenditures (items) The budget for 2024 is 279900 yuan, a decrease of 9600 yuan or 3.32% from the 2023 budget, mainly due to a reduction in the number of employed personnel.

4. Health expenditure (category): Administrative institutions, medical expenses, and medical expenses of public institutions. The budget for medical expenses of public institutions in 2024 is 215800 yuan, a decrease of 0.66 million yuan or 2.97% compared to the 2023 budget. The main reason for the decrease is the reduction of employed personnel.

5. Housing security expenditure (category) Housing reform expenditure (funds) Housing provident fund (item) The budget for 2024 is 547600 yuan, a decrease of 19400 yuan from the 2023 budget, a decrease of 3.42%. The main reason for the decrease is the reduction of employed personnel.

4. Housing security expenditure (category) Housing reform expenditure (funds) Rent increase subsidies (items) The budget for 2024 is 132900 yuan, a decrease of 4700 yuan from the 2023 budget, a decrease of 3.42%. The main reason for the decrease is the reduction of employed personnel.

6、 Explanation on Basic Expenditure of General Public Budget in 2024

The management office of the Crossing of the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall) will have a basic expenditure of 10.7252 million yuan in the general public budget for 2024, including:

Salary and welfare expenditures amounted to 9.8166 million yuan, mainly including: basic salary, allowance subsidies, bonuses, meal allowances, performance-based pay, basic pension insurance contributions for government agencies and institutions, occupational annuity contributions, employee basic medical insurance contributions, other social security contributions, housing provident fund, medical expenses, and other salary and welfare expenditures.

The expenditure on goods and services was 868800 yuan, mainly including office expenses, travel expenses, maintenance (care) expenses, training expenses, official reception expenses, labor costs, union funds, welfare expenses, other transportation expenses, and other expenditures on goods and services.

The subsidy for individuals and families is 1100 yuan, mainly including other subsidies for individuals and families.

Capital expenditure of 38800 yuan mainly includes the purchase of office equipment.

7、 Explanation on the Budget Allocation of Government Funds in 2024

The management office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) did not receive any government funded budget allocation income in 2024, nor did it use any government funded budget allocation arrangements for expenditures.

8、 Explanation on the Allocation of State owned Capital Operating Budget in 2024

The management office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) did not receive any revenue from the state-owned capital operation budget allocation in 2024, nor did it use any expenditure arranged by the state-owned capital operation budget allocation.

9、 Explanation on the 2024 Project Expenditure Budget

The management office of the Crossing the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall) has arranged a project expenditure budget of 20.6245 million yuan in 2024, a decrease of 5.0397 million yuan or 19.64% compared to the 2023 budget. The main reason for the decrease is that some projects from the previous year do not need to be executed this year. This mainly includes a fiscal allocation of 20.6245 million yuan for the current year (including 20.6245 million yuan for general public budget, 0 million yuan for government funds, and 0 million yuan for state-owned capital operation budget), a fiscal allocation carryover balance of 0 million yuan (including 0 million yuan for general public budget, 0 million yuan for government funds, and 0 million yuan for state-owned capital operation budget), 0 yuan for financial special account management funds, and 0 yuan for other income arrangements.

10、 Explanation on the Government Procurement Budget for 2024

The management office of the Crossing the Yangtze River Campaign Memorial Hall (Anhui Celebrity Hall) has arranged a government procurement budget of 12.0655 million yuan in 2024, a decrease of 5.1089 million yuan or 29.75% compared to the 2023 budget. The main reason for the decrease is that some projects from the previous year do not need to be executed this year.

11、 Explanation on the Budget for Government Procurement of Services in 2024

The management office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) has not arranged for government procurement of service budget expenditures in 2024.

12、 Explanation on the Budget Situation of "Three Public" Expenditure in 2024

In 2024, the general public budget and government fund financial allocation for the "Three Public" expenses of the management office of the Crossing of the Yangtze River Battle Memorial Hall (Anhui Celebrity Hall) amounted to 6000 yuan, a decrease of 4000 yuan or 40% compared to the 2023 budget. Among them, the cost of going abroad for official purposes is 0 yuan, the cost of official reception is 6000 yuan, and the cost of purchasing and operating official vehicles is 0 yuan. The specific situation is as follows:

（1） Overseas travel expenses for official purposes. The expenditure budget is 0 million yuan, which is the same as that of 2023. The main reason is that there are no plans to go abroad for official purposes in the previous and current years, and no corresponding budget has been arranged for going abroad for official purposes. The use of funds strictly follows the relevant regulations such as the "Management Measures for Temporary Overseas Travel Funds of Party and Government Organs Directly under the Municipal Government of Hefei City" (Hezhengban [2014] No. 8), mainly used for related expenses incurred during overseas travel for official purposes.

（2） Official reception expenses. The expenditure budget is 6000 yuan, a decrease of 4000 yuan or 40% compared to the 2023 budget, mainly due to the determination of the 2024 budget amount based on the actual expenditure in 2023. The use of funds strictly complies with relevant regulations such as the "Regulations on the Strict Practice of Frugality and Anti Waste in Party and Government Organs" and the "Interim Measures for the Management of Official Reception Expenses of Hefei Municipal Direct Organs" (HeCaiXing [2015] No. 64), mainly used for official expenses such as receiving business guidance from external units and exchanging business with peers.

（3） Purchase and operation expenses for official vehicles. The expenditure budget is 0 million yuan, which is the same as in 2023. Among them, the operating cost of official vehicles is 0 million yuan, which is the same as in 2023. The main reason is the reform of official vehicles in public institutions. There are no official vehicles under the name of the unit, and there is no budget for operating official vehicles in the previous and current years. It is mainly used for vehicle fuel costs, maintenance costs, bridge tolls, insurance premiums and other expenses. The purchase cost of official vehicles is 0 million yuan, which is the same as in 2023. The main reason is that no official vehicle purchase plan was arranged in the previous and current years, and no corresponding budget for official vehicle purchase was arranged. It was used to purchase 0 confidential communication vehicles, 0 emergency support vehicles, 0 other official vehicles equipped according to regulations, 0 law enforcement and duty vehicles, and 0 special professional and technical vehicles.

13、 Explanation of other important matters

（1） Preparation status of project performance objectives.

The management office of the 2024 Crossing the Yangtze River Memorial Hall (Anhui Celebrity Hall) has formulated 9 project performance goals with a budget of 20.6245 million yuan. Performance objectives include overall goals and performance indicators. Overall goals are the overall description of expected project outputs and benefits, while performance indicators are the refinement and quantification of overall goals. The performance indicators are uniformly set according to three levels, with the first level indicators divided into three categories: output indicators, benefit indicators, and satisfaction indicators; Secondary indicators are divided into quantity indicators, quality indicators, timeliness indicators, cost indicators (all belonging to output indicators), economic benefits, social benefits, ecological benefits, sustainable impact indicators (all belonging to benefit indicators), and service object satisfaction indicators; Combining the third level indicators with the actual project situation, clarify specific indicators and indicator values.

（2） Operating expenses of the organization.

The management office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) is a non participating public institution with no operating funds. The budget for operating expenses of our unit in 2024 is 19.483 million yuan, a decrease of 486800 yuan or 2.44% compared to 2023. The main reason for the decrease is the further reduction of equipment maintenance costs.

（3） Government procurement situation.

The total government procurement budget for the 2024 Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) Management Office is 12.0655 million yuan, including: government procurement of goods budget of 0 million yuan, government procurement of engineering budget of 0 million yuan, and government procurement of service budget of 12.0655 million yuan.

（4） The occupation and use of state-owned assets.

As of December 31, 2023, the total amount of fixed assets (original value) of the Management Office of the Crossing of the Yangtze River Battle Memorial Hall (Anhui Celebrity Hall) was 10.9389 million yuan, an increase of 644200 yuan from the previous year, including 38900 yuan for land, houses and structures, 6.1677 million yuan for equipment, and 4.7323 million yuan for other assets; The total amount of intangible assets (original value) is 486000 yuan, including 0 yuan for land use rights.

After the unit vehicle reform, 0 vehicles will be retained, among which.

There is one set of equipment with a unit value of over 1 million yuan.

The unit budget for 2024 is arranged to purchase 0 vehicles, with a purchase cost of 0 million yuan.

The unit budget for 2024 is arranged to purchase 0 units (sets) of equipment with a unit value of over 1 million yuan, with a purchase cost of 0 million yuan.

（5） Government investment in public welfare information technology projects.

The management office of the 2024 Crossing the Yangtze River Memorial Hall (Anhui Celebrity Hall) has allocated a budget of 0 government funded public welfare information projects with a single investment of over 1 million yuan, with a budget of 0 million yuan.

Part Four Explanation of 2024 Transfer Payment Budget

The budget project for transfer payments to the management office of the 2024 Crossing the Yangtze River Memorial Hall (Anhui Celebrity Hall) without a supervisor.

Part 5: Definition of Nouns

1、 Fiscal appropriations revenue: refers to the funds allocated by the municipal finance department in the current year, mainly including general public budget appropriations revenue, government fund budget appropriations revenue, and state-owned capital operation budget appropriations revenue.

2、 Financial special account management funds: Refers to education fees and other expenses that are included in the financial special account management in accordance with relevant regulations on non tax revenue management.

3、 Other income: refers to income other than fiscal appropriations, financial account management funds, etc.

4、 Previous year carry over: Refers to funds arranged and carried over from previous years that continue to be used for their original purpose in the current year.

5、 Carry over to next year: Refers to funds that were previously budgeted and cannot be implemented according to the original plan due to changes in objective conditions, and need to continue to be used for their original purpose in future years.

6、 Basic expenditure: refers to personnel and public expenses incurred to ensure the normal operation of institutions and complete daily work tasks.

7、 Project expenditure: refers to the expenses incurred beyond basic expenditures to complete specific administrative tasks and career development goals.

8、 The "Three Public Expenses" funds: The "Three Public Expenses" funds included in the financial budget management refer to the expenses for official travel abroad, the purchase and operation of official vehicles, and official reception expenses arranged by the unit with general public budget and government funds. Among them, the expenses for going abroad on official business reflect the international travel expenses, transportation expenses between foreign cities, accommodation expenses, meal expenses, training expenses, miscellaneous expenses and other expenses incurred by the unit when going abroad on official business; The purchase and operation expenses of official vehicles reflect the unit's expenditure on the purchase of official vehicles (including vehicle purchase tax), as well as expenses such as fuel costs, maintenance costs, bridge tolls, insurance premiums, safety reward fees, etc; Official reception expenses reflect the various types of official reception (including foreign guest reception) expenses incurred by the unit in accordance with regulations.

9、 Operating expenses of government agencies: refers to various funds used to purchase goods and services to ensure the operation of administrative units (including public institutions managed in accordance with the Civil Servant Law), including office and printing expenses, postal and telecommunications expenses, travel expenses, conference expenses, welfare expenses, daily maintenance expenses, general equipment purchase expenses, office water and electricity expenses, office heating expenses, office property management expenses, official vehicle operation and maintenance expenses, and other expenses.

Appendix: 2024 Budget Report of the Management Office of the Crossing of the Yangtze River Memorial Hall (Anhui Celebrity Hall) (16 sheets)

渡江战役纪念馆（安徽名人馆）管理处2024年预算报表（16张）.pdf