Sunday, March 23, 2025

OKR vs. KPI

今天聽 podcast (https://podcasts.apple.com/tw/podcast/id1586296758?i=1000682466626),在介紹這本書 "主管必看!最強KPI管理術:活用10大步驟、53張圖表,績效輕鬆達標" (https://www.books.com.tw/products/0011003639),裡面提到 OKR (Objectives and Key Results)及 KPI (Key Performance Indicators),也提到該擺脫「不明所以的KPI」。

KPI管理指的是,所有相關人士都持續分享、實施並改善以下3點:
  ①明確目前事業最重要的步驟(Critical Success Factor, CSF)
  ②這項步驟該執行到什麼程度(Key Performance Indicator, KPI)
  ③事業計畫能夠達成嗎?(Key Goal Indicator, KGI)

或許有空該來閱讀看看,不一定是用在工作,或許自己的人生也應該要想一下自己的 OKR 及 KPI 為何。

I listened to a podcast (https://podcasts.apple.com/tw/podcast/id1586296758?i=1000682466626) today, which introduced the book "A Must-Read for Managers! The Most Powerful KPI Management Technique: Use 10 Steps and 53 Charts to Easily Achieve Performance Targets" (https://www.books.com.tw/products/0011003639). It mentioned how to manage a company with OKR (Objectives and Key Results) and KPI (Key Performance Indicators), and that we should get rid of "unclear KPIs."

KPI management means that all stakeholders continuously share, implement and improve the following three points:
① Identify the most important steps in your current career (Critical Success Factor, CSF)
②To what extent should this step be executed (Key Performance Indicator, KPI)
③Can the business plan be achieved? (Key Goal Indicator, KGI)

Maybe I should read it sometime. I think that I don't need to limit the application of OKR and KPI to work only, I might set up my own OKR and KPI for my life.

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When I searched OKR vs. KPI in google, AI overview provided following information: 
OKRs (Objectives and Key Results) are a goal-setting framework, while KPIs (Key Performance Indicators) are metrics used to track progress towards those goals. OKRs focus on defining ambitious goals and then measuring progress towards them, while KPIs are focused on specific, quantifiable measures of success.

Objectives and Key Results (OKRs):
What they are: OKRs are a goal-setting framework that helps organizations define ambitious targets and track their progress towards achieving them.

Structure: OKRs consist of two parts:Objective: A qualitative, aspirational goal that describes what you want to achieve.

Key Results: A set of quantifiable metrics that measure progress towards the objective.

Purpose: OKRs are used to: 
Set ambitious, measurable, and time-bound goals.
Align teams and individuals around shared goals.
Track progress and make adjustments as needed.

Key Performance Indicators (KPIs):
What they are: KPIs are specific, quantifiable measures of success that allow you to track organizational performance.

Purpose: KPIs are used to:
Track progress towards specific goals.
Identify areas for improvement.
Make data-driven decisions.

Key Differences:



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Thursday, January 9, 2025

About SIF (Solar-Induced Chlorophyll Fluorescence)

"What is SIF?  SIF (Solar induced chlorophyll fluorescence) is an electromagnetic signal emitted by the chlorophyll a of assimilating plants: part of the energy absorbed by chlorophyll a is not used for photosynthesis, but emitted at longer wavelengths as a two-peak spectrum roughly covering the 650–850 nm spectral range." (SENTINEL-5P+ INNOVATION)

650-850nm is the spectral range of SIF.  People collect the data of 687nm, 730-780nm, 760nm, etc.. Some papers mentioned that the emission peaks are 685nm and 740nm. TROPOMI on Sentinel-5P+ collects SIF data emitted from two fitting windows: 743-758 nm window (baseline product) and 735-758 nm.

1. Ground far-red sun-induced chlorophyll fluorescence and vegetation indices in the US Midwestern agroecosystems (https://www.nature.com/articles/s41597-024-03004-w)
This paper should be a good reference of SIF.

2. Phenotyping Plant Responses to Biotic Stress by Chlorophyll Fluorescence Imaging
(https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2019.01135/full)

3. SIF Learn a New Approach to Remote Sensing of Vegetation (NASA, March 3, 2021)
(https://appliedsciences.nasa.gov/our-impact/news/solar-induced-fluorescence-learn-new-approach-remote-sensing-vegetation)

Training:
ARSET - Use of Solar Induced Fluorescence and LIDAR to Assess Vegetation Change and Vulnerability (NASA, March 16, 18, 23, & 25, 2021)
(https://appliedsciences.nasa.gov/get-involved/training/english/arset-use-solar-induced-fluorescence-and-lidar-assess-vegetation)

4. Sentinel-5P+ Innovation SIF (https://eo4society.esa.int/projects/sentinel-5p-innovation-solar-induced-chlorophyll-fluorescence-sif/)

Scientific Papers
(1) The influence of plant water stress on vegetation-atmosphere exchanges: Implications for ozone modelling (Emmerichs T.; Lu Y.-S.; Taraborrelli D., Biogeosciences (2024))
(2) An Operational Downscaling Method of Solar-Induced Chlorophyll Fluorescence (SIF) for Regional Drought Monitoring (Hong Z., Hu Y., Cui C., Yang X., Tao C., Luo W., Zhang W., Li L., Meng L., Agriculture (Switzerland) (2022))
(3) TROPOMI SIF reveals large uncertainty in estimating the end of plant growing season from vegetation indices data in the Tibetan Plateau (Yang J., Xiao X., Doughty R., Zhao M., Zhang Y., Köhler P., Wu X., Frankenberg C., Dong J., Remote Sensing of Environment (2022))

5. Google AI Overview





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