115 lines
2.6 KiB
Markdown
115 lines
2.6 KiB
Markdown
---
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id:
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aliases: []
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title: 2026-01-09
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tags:
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- authorship/original
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- destiny/permanent
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- status/draft
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- type/daily
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dg-publish: true
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---
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# 2026-01-09
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## 2026-01-09 10:00
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### 2100 Crystal Drive
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`#600 ? WHITE ?` had incorrect sort codes.
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#### Lighting Control
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I took off lighting per plans (E510)
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in spite of proposal stating "local control".
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Will have to be changed.
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#### Labor Factor
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Fire Alarm
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Switchgear
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Feeders
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Subfeeds
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Corridors
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Amenity
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Retail
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Units
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#### Fixtures
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> [!failure]
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> Several fixtures were erroneously based on NM cable.
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I built some fixtures with \#12/3 in areas with emergency lighting
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to be an unswitched hot.
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Joel is having me change them to \#12/2.
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#### Units
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> [!failure]
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> One unit type typical was missing `Area` quantities.
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> Another had no takeoff.
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#### Labor Plan
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$$
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\mathbb{E}\left[\frac{\text{Hours Per Unit}}{\text{Openings Per Unit}}\right] \approx .75~\text{Hours Per Opening}
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$$
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High Rise .110--.120 hr/sqft
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## 2026-01-09 12:00
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$$
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\begin{gather*}
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\frac{146097}{400} = 365.2425~\text{Days Per Year} \
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\frac{20871}{400} = 52.1775~\text{Weeks Per Year} \
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\frac{6957}{1600} = 4.348125~\text{Weeks Per Month}
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\end{gather*}
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$$
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$$
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\frac{365.2425~\text{Days Per Year}}{7~\text{Days Per Week}}
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= 52.1775~\text{Weeks Per Year}
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$$
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$$
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\frac{52.1775~\text{Weeks Per Year}}{12~\text{Months Per Year}}
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= 4.348125~\text{Weeks Per Month}
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$$
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## 2026-01-09 14:45
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[[bid-price-modeling]]
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Suppose a true cost model,
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accounting for all relevant information available at time $t$.
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$C(t)$ returns a distribution whose [scale](https://en.wikipedia.org/wiki/Scale_parameter)
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decreases with $t$, and $C(0)$ maps to a single value.
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$t>0$ is time until the final payment.
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> 
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>
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> Figure: lognormal distributions with the same [location](https://en.wikipedia.org/wiki/Location_parameter)
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> varied by [scale](https://en.wikipedia.org/wiki/Scale_parameter).
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## 2026-01-09 16:28
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### Occam's razor
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> [!info] Also Known As
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> * the principle of parsimony
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> * the law of parsimony
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recommends searching for explanations constructed with the smallest possible set of elements.
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Attributed to William of Ockham, 14th-century English philosopher and theologian.
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> _Entia non sunt multiplicanda praeter necessitatem_
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> ("Entities must not be multiplied beyond necessity")
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> "Of two competing theories, the simpler explanation is to be preferred."
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> [!quote] [[klugman-et-al_2019_loss-models#4.2 The Role of Parameters]]
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> The principle of parsimony states that the simplest model
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> that adequately reflects reality should be used.
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