vault backup: 2026-02-25 08:15:32

2026-02-25 08:15:32 -05:00
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 # 2026-01-09
-
-# 2026-01-09 10:00:03
-
-### 2100 Crystal Drive
-
-`#600 ? WHITE ?` had incorrect sort codes.
-
-#### Lighting Control
-
-I took off lighting per plans (E510)
-in spite of proposal stating "local control".
-Will have to be changed.
-
-#### Labor Factor
-
-Fire Alarm
-Switchgear
-Feeders
-Subfeeds
-Corridors
-Amenity
-Retail
-Units
-
-#### Fixtures
-
-> [!failure]
-> Several fixtures were erroneously based on NM cable.
-
-I built some fixtures with \#12/3 in areas with emergency lighting
-to be an unswitched hot.
-Joel is having me change them to \#12/2.
-
-#### Units
-
-> [!failure]
-> One unit type typical was missing `Area` quantities.
-> Another had no takeoff.
-
-#### Labor Plan
-
-$$
-\mathbb{E}\left[\frac{\text{Hours Per Unit}}{\text{Openings Per Unit}}\right] \approx .75~\text{Hours Per Opening}
-$$
-
-High Rise .110--.120 hr/sqft
-
-# 2026-01-09 12:00:??
-
-$$
-\begin{gather*}
-\frac{146097}{400} = 365.2425~\text{Days Per Year} \
-\frac{20871}{400} = 52.1775~\text{Weeks Per Year} \
-\frac{6957}{1600} = 4.348125~\text{Weeks Per Month}
-\end{gather*}
-$$
-
-$$
-\frac{365.2425~\text{Days Per Year}}{7~\text{Days Per Week}}
-= 52.1775~\text{Weeks Per Year}
-$$
-
-$$
-\frac{52.1775~\text{Weeks Per Year}}{12~\text{Months Per Year}}
-= 4.348125~\text{Weeks Per Month}
-$$
-
-# 2026-01-09 14:45:??
-
-[[bid-price-modeling]]
-
-Suppose a true cost model,
-accounting for all relevant information available at time $t$.
-
-$C(t)$ returns a distribution whose [scale](https://en.wikipedia.org/wiki/Scale_parameter)
-decreases with $t$, and $C(0)$ maps to a single value.
-$t>0$ is time until the final payment.
-
-> ![250](https://upload.wikimedia.org/wikipedia/commons/thumb/8/89/Log-normal-pdfs.png/960px-Log-normal-pdfs.png)
->
-> Figure: lognormal distributions with the same [location](https://en.wikipedia.org/wiki/Location_parameter)
-> varied by [scale](https://en.wikipedia.org/wiki/Scale_parameter).
-
-# 2026-01-09 16:28:??
-
-### Occam's razor
-
-> [!info] Also Known As
-> * the principle of parsimony
-> * the law of parsimony
-
-recommends searching for explanations constructed with the smallest possible set of elements.
-Attributed to William of Ockham, 14th-century English philosopher and theologian.
-
-> _Entia non sunt multiplicanda praeter necessitatem_
-> ("Entities must not be multiplied beyond necessity")
-
-> "Of two competing theories, the simpler explanation is to be preferred."
-
-> [!quote] [[klugman-et-al_2019_loss-models#4.2 The Role of Parameters]]
-> The principle of parsimony states that the simplest model
-> that adequately reflects reality should be used.