《The Amtrak Wars I : Cloud_Warrior》17

基于MATLAB的太阳能光伏电力仿真,模拟每日太阳能发电,可视化功率曲线,并通过数值积分计算总能量输出。.zip 1.版本:matlab2014a/2019b/2024b 2.附赠案例数据可直接运行。 3.代码特点:参数化编程、参数可方便更改、代码编程思路清晰、注释明细。 4.适用对象:计算机,电子信息工程、数学等专业的大学生课程设计、期末大作业和毕业设计。 立即下载

'What kind of damn fool question is that?"  Beaver looked up at
Yellow-Hat and chuckled.  'You think I've forgotten what they look
like?  Start moving that shit off her legs."

Yellow-Hat went to work.  Beaver pulled the stopper out of his skin
water-bottle, eased Jodi's head off the ground, and tipped a little
water onto her parched lips.  Jodi licked them dry and opened her mouth
for more.

'Thanks..."  she wheezed.

'She don't look so hot,' said Bone-Dome flatly.

'No.  She's broke up pretty bad,' admitted Beaver.  'But she'll mend.

Make no mistake, this is one tough lady."

'She'll need to be,' said Bone-Dome.  He seized hold of the dead coyote
and flung it aside.  'Okay, let's get her to Medicine Hat."

Jodi had been found by a scavenging party from a band of Tracker
renegades.  S he had known about them for years.  As a youngster, she
had seen several who had been captured and brought back to the
Federation for trial, confess the error of their ways before being shot
on tv.  Later, during her time as a wingman, she had also seen the
bodies of about a dozen renegades killed by patrols from The Lady.  Men
and women that she had helped hunt down.  Beaver and his two friends
were the first live ones she had ever met face to face.

She remained conscious until they lifted her onto a makeshift stretcher
then slipped into a coma.  For a time, Jodi knew nothing of the outside
world, but deep within her subconscious mind the ordeal continued.  Her
inner eye was continually assailed by jagged, abstract images of pain;
a limitless form of mental torture that drove her, screaming
soundlessly, to the edge of madness.  Eighteen hours later she emerged
from the fevered coma to find herself in the hands of Medicine Hat.

Someone holding a clean worn rag mopped her brow.  She looked up at the
sky and took a deep breath, savouring the sweetness of the air.  Oh,
Columbus!  It hurt.  Her whole body burned from head to toe.  It didn't
matter.  She was going to live/ For Steve, the next weeks seemed to
blur together, making it hard to place specific events.  He could only
remember being fed a thick soup twice a day from a wooden bowl held by
Cadillac, Mr Snow, and a number of female lumpheads who ranged from the
simply plain and unattractive to the hideously grotesque.  At first,
the thought of eating Mute food filled Steve with revulsion.  He
refused it for a couple of days then became so hungry that he ate what
he was offered - and was promptly sick.

After several more days of mental and intestinal discipline, he found
he was able to keep the food down without feeling nauseated and,
eventually, began to look forward with growing relish to the next
strongly flavoured dish.  He did not, however, ask what he was
eating.

His progress was rewarded by a meal he could recognise - a fish with
succulent pink, flaky flesh, roasted over a wood fire.

Exactly as in that flash of memory he had had at Roz's side in San
Jacinto Deep.  As he ate the fish, he wondered how he could have
acquired that knowledge.  Perhaps, he conjectured, it did not stem from
a memory of past events but was a glimpse of the future.  Perhaps he
had foreseen this moment - in the same inexplicable way that he had
often been able to predict the direction of the course marker lights
when flying in the Snake Pit.

Mr Snow visited him from time to time to inspect and dress his
wounds.

Sometimes Cadillac came with him; at other times, the straight-limbed
Mute would enter alone and squat silently by his side.  Occasionally,
Steve would engage them in desultory conversation; desultory because he
was given regular small doses of Dream Cap which kept him in a state of
drowsy euphoria.  Twice, or maybe three times, Steve was vaguely aware
of being lifted onto a stretcher of wood and skins which was then
carried through the darkness.  He half-remembered feeling the cool
night air on his face; seeing the wondrous twinkling brilliance of
countless points of light scattered across a black velvet sky.

From the overheard snatches of conversation that entered his fudged
brain, he understood that his Mute captors were moving camp under cover
of darkness and lying concealed by day to avoid discovery by the
arrowheads that now regularly crossed the sky.

Once, as he lay under a loose covering of branches, he saw, through a
ragged gap in the leaves, two of the graceful Skyhawks dip and wheel
across the sky; saw the white wingtip panels and recognised them as
coming from The Lady.  Steve realised that she must have returned
re-equipped with a new section of wingmen to continue her thrust into
Plainfolk territory.  He wondered if Gus White was one of the pair now
above him and whether they were looking for him, or whether they were
just hunting Mute.

He felt a sudden pang of regret at being grounded then consoled himself
with the thought that, against all odds, he was still alive and in one
piece, being fed and cared for.  If he could manage to stay alive, if
his body mended, he could begin to plan his escape - always provided
his captors didn't find themselves on the receiving end of another
napalm strike.  Despite the fudging effects of the Dream Cap, this
thought was a salutary reminder that he, Brickman, S.R.

was now one of the hunted.  His fate was bound up with that of his
captors.

After about a month, Mr Snow stopped feeding Steve threads of Dream
Cap. Steve found he was able to sit up without too much discomfort
from his mending ribs.  His left shoulder was still painfully stiffbut
he was able to make limited use of his left arm.  His right arm was
still in a sling but the livid, gaping wound had closed.

Mr Snow pronounced himself satisfied with Steve's general progress.

'You should soon be ready to start moving around on that leg.  I'll see
if we can knock you up something to walk with."

'You mean a pair of crutches?"

'Yes, crutches,' said Mr Snow.  'We must talk some more.

You must know a whole lot of forgotten words."

'You must know a lot I've never heard of,' replied Steve.

'If you've got time, uhh - maybe we can learn each other's language."

'Maybe,' said Mr Snow, noncommittally.  'A lot of the words I use won't
mean anything to you.  You live in a different world; see things in a
different way."

Steve shrugged.  'You could teach me to see things your way."

Mr Snow smiled.  'I doubt it.  What, for instance, do you mean by the
word "understanding"?"

'"Understanding"?"  Steve reflected for a moment.  'llhh, knowing what
someone means when they give you an order.

Knowing how something works, or what to do if anything goes wrong."

Mr Snow nodded.  'How about "Love"?"

Steve hesitated.  'Is that a Mute word?"

'No, it's from the Old Time.  It was a word that was constantly on
people's lips.  Not that it changed anything."

Steve shook his head.  'Couldn't have been very important.  If it was,
we'd use it in the Federation.  What is it - some kind of swearword?"

Mr Snow let out a throaty chuckle.  'I can see you've got a lot to
learn."

Steve grinned.  'Listen - Cadillac hadn't heard of "television sets",
you hadn't come across "crutches", and I didn't know about "love".

Maybe we can make a trade.

Think about it."

Mr Snow's eyes twinkled.  'I will."  He patted Steve on the shoulder
and ducked out of the hut.

Now that he was no longer being fed Dream Cap, Steve began to think
more clearly and was quick to realise that his conversations with Mr
Snow and Cadillac could be his lifeline.  He had been told about
wordsmiths in the Field Intelligence briefing the crew had attended
before their departure from Nixon-Fort Worth.  In a race of idiots, the
wordsmiths were the bright guys.  Rare, gifted individuals who acted as
the communal brains for the Mute clans which harboured them.  It was
known that Mutes could not read or write and since most were dum-dums
who didn't know what day it was they were totally reliant on the
memories of their wordsmiths.  According to the three-man FINTEL team
who gave the briefing, the cleverest of these guys carried up to nine
hundred years of history around in their heads.  They also possessed
the ability to put chunks of it to music - what were known as 'fire
songs' - plus a mental compendium of general knowledge that enabled
Mutes to survive!

In the decimation of the Southern Mutes in the centuries after the
Break-Out many wordsmiths were believed to have perished.  Those who
escaped death during pacification and resettlement of the New
Territories had either moved north or were keeping an extremely low
profile.  Figures were not available but it was believed that
wordsmiths were more numerous among the Plainfolk but not every clan
had one and those that did guarded them well.  Apart from the obvious
advantages of owning a walking encylopaedia, it had become apparent
that possession of a wordsmith gave a clan a vital edge over their
rivals in other ways; ways which were still not fully understood.  One
thing, however, was clear: a definite correlation had been established:
the more gifted the wordsmith, the more powerful the clan.

Having been told repeatedly from the age of three that Mutes did not
take prisoners, Steve could not understand why his life had been
spared.  He longed to know the answer but it was theone question he
studiously avoided asking his captors.  At the back of his mind was a
lurking fear he might learn that their calendar might include some
bizarre festival at which the entire M'Call clan solemnly dined off
roast cloud warrior.  If that was what was waiting at the end of the
road he preferred not to know about it.  Steve contented himself with
expressing his appreciation to all the Mutes who helped nurse him back
to health and congratulated himself on his luck at being shot down by
Cadillac.  Apart from being intelligent and good-humoured, he and Mr
Snow were insatiably curious.  Great.  Couldn't be better.

Steve was prepared to assuage their thirst for learning.  He would feed
them the entire Tracker vocabulary one word at a time, plus everything
they wanted to know about the Federation in the minutest detail.  And
what he didn't know, he would make up.  He would spin out the material
by getting them to tell him everything they knew.  As long as they felt
they were onto a good deal they would keep him alive.  After all - who
else did they have to talk to?

In the long periods when he was left alone, Steve dwelt on the
possibility of escape.  He wondered if the wreckage of his Skyhawk had
been abandoned or whether any bits of the airframe or equipment had
been kept as trophies.  It had not escaped his notice that one of the
female lumpheads assigned to bring him food had blue and red electric
cable threaded through her plaited hair.  Maybe someone had ripped out
the radio.  Although normally powered by the motor, it carried its own
battery pack for use in an emergency.  There was also the survival
equipment he had been carrying: air pistol, combat knife, map, food
concentrates, flares, and a portable pocket-sized emergency radio
beacon that enabled the wagon train to home in on a downed wingman.

Steve had been stripped of everything except his underpants but he had
seen Cadillac wearing the top half of his flight fatigues.  The pockets
had been empty.

That meant the goodies they held were probably stashed away
somewhere.

If so ...

Steve spent many happy hours devising elaborately detailed escape
scenarios - all of which ended in triumph with a suitably thunderous
welcome at Grand Central.  It was an agreeable fantasy.  No Tracker
who had fallen into the hands of the Mutes had ever lived to tell the
tale.  As the days passed and the strength gradually returned to his
body, Steve became convinced that he wis going to make it.  He would be
the first.  His skill and daring would more than make up for his
failure to gain top marks and the coveted Minuteman Trophy.  His master
plan would be back on course.

Set down outside Cadillac's hut for the first time in daylight, Steve
discovered the source of one of the smells that had plagued him.  The
decaying heads of two Mute warriors were stuck on six-foot stakes set
in the ground on either side of the doorway.  Steve studied them with
morbid fascination noting the wide, powerful necks and lower jaws, the
primitive helmets with their pattern of pierced stones, and the way the
point of each stake, roasted iron-hard over a fire, had been hammered
through the top of the skulls.  Steve looked towards the other huts
scattered under the nearby trees and saw that several of them had
stakes outside the doors loaded with similar grisly trophies.

Around noon, Cadillac appeared carrying two freshly-caught salmon
trout.  He used his flame-pot to kindle a fire, gutted the fish,
threaded them on his knifestick and proceeded to roast them over the
flames.

Steve's sense of smell had, by this time, adjusted itself to
accommodate the appetising aroma.  His saliva glands began to work
overtime.  He noticed that Cadillac was wearing his digital watch.  A
calendar alarm model - strapped upside down on his left wrist.  Steve
twisted his head round in an effort to read the date, failed, thought
about asking for the watch back and decided to wait for a more
appropriate moment.  He drew Cadillac's attention to the head impaled
on the stake to his right.  Shakatak.  'A friend of yours?"

Cadillac dropped his eyes onto the roasting fish, turning the
knife-stick so that they cooked evenly.  'He tried to invade our
turf."

'So you killed him?"

'Both of them,' said Cadillac.  It wasn't strictly true but to tell the
whole story would mean explaining Clearwater's contribution.  Mr Snow
had told him that the cloud warrior must not learn of her powers or her
presence in the settlement.

'And if you kill somebody else, will his head end up on a pole too?"

'It will join these,' answered Cadillac.  He broke up some more
branches and fed them into the fire.  'Each pole holds ten heads.  A
full head-pole is the sign of a mighty warrior."

'I see..."  Steve glanced at Shakatak's sightless head.  'I guess that
means you've got some way to go."

Cadillac responded with a quiet smile.  'I am forbidden to run with the
Bears.  But in their eyes I have standing.  I have chewed bone."

'Chewed bone?"

'Killed in single combat.  Taken the head and eaten of the knife
arm."

Steve felt queasy.  'Jeer - you mean you ate the arm of this poor
sonofabitch?"

'No,' said Cadillac.  'Our forefathers did many long years ago.  The
arm and the leg.  Now, Plainfolk custom demands that, on the first
kill, a warrior bite the fore part of the arm that wields the sharp
iron through to the bone."

'Columbus ..."  Steve shuddered and lapsed into silence.

When the fish were cooked, Cadillac slid them off his knife-stick onto
a flat stone, cut off their heads, wrapped them in large red leaves and
handed one to Steve.

'Thanks..."  Steve took it in his left hand and edged his right hand up
to help hold it.  A sharp stab of pain pierced his torn biceps.  He
gasped, then inhaled the aroma of the roast trout and forgot about his
sore arm and the artless savagery of his companion and concentrated on
assuaging his hunger.

He brought his lips gingerly onto the fish.  It was still too hot to
eat.  'Smells good.  Did you catch these?"

'Yes."  Once again, it was not strictly true.  Cadillac had gone
fishing with Clearwater and it was she who had gently stroked them into
immobility and lifted them triumphantly by the gills from the rock
pool.

Steve gave a quiet laugh.  'It's crazy, you know.  I've seen fish like
this in the Federation.  Swimming around in pools.

But they're just decoration.  No one would think of eating one any
more than - ,' he hesitated, '- than they'd think of eating someone's
arm."

'A warrior who chews bone takes the strength of his enemy into his own
body."  Cadillac blew on the charred scales of his fish and bit into
the pale steaming flesh.

Steve replied with a hollow smile.  'You don't really believe that, do
you?"  He shook his head.  'I really can't work you guys out.  You go
to the trouble of pulling me out of the cornfield, and putting me back
in one piece and at the same time, you - ,' he gestured towards
Shakatak's impaled head, '- you do this kind of thing and -' Cadillac
cut in.  'The sand-burrowers have taken many heads from our Southern
brothers."  ?'Yeah, that's true,' admitted Steve.  'But it's not done
all the time.  It's a kind of initiation thing for wet-feet, linemen on
their first trip - warriors who have not chewed bone - and the only
reason it's done is because you started it."

Cadillac nibbled at his trout.  'Do you not kill?"

'Yeah, sure,' replied Steve.  'We have to.  We're trying to win back
what belongs to us.  The blue-sky world.  But you guys kill each
other."  He gestured at the heads of Shakatak and Torpedo.  'These
fellas are Mutes, like you!"  Cadillac considered Steve's words.  'In
our world, all those who are not blood-brothers and blood-sisters of
the clan M'Call are rivals.  We must defend our turf.  The M'Calls are
descended from the ninth daughter of Me-Sheegun and the ninth son of
She-Kargo.  Many of the Plainfolk clans accept our greatness for our
seed goes back to the Heroes of the Old Time.  But there are those who
envy our greatness and wish to take it from us.  If we are challenged
then we must fight to the death or lose our standing.  Without standing
we are less than dust."

'Why?  What's wrong in running away, then sneaking back later and
nailing the other guy while he's asleep?"

Cadillac did not understand the question.  He shrugged.

'This is not the way of a Warrior.  If he is of the She-Kargo, he must
follow the path laid down by Mo-Town, our great Mother."

That's your tough 'luck, thought Steve.  'And where do we, uhh
"sand-burrowers" - fit into all this?"

Cadillac eyed him solemnly.  'You are known by many names.  The Beasts
from the Bowels of the Earth, the Creatures of the Dark Cities, the
Smooth-Skulled Worms that ride in the belly of the Iron Snake, the
Death-Bringers, the Slave-Masters, the Evil Ones, the Servants of
PentAgon, Lord of Chaos and Scourge of the World."

Steve did his best to keep a serious face.  'Fascinating.

Back in the Federation we think we are the good guys.  You are the ones
who brought about the Holocaust that wrecked the blue-sky world."

'I know nothing about this Holocaust or the blue-sky world of which you
speak."

'Oh, come on,' insisted Steve.  He swept an arm across the landscape.

'This is the blue-sky world!  You burned the cities and laid waste the
land.  That's what we call the Holocaust.  It was you, the Mutes who
poisoned the air 'and drove us to take shelter within the
earth-shield!"  'No, you are wrong,' said Cadillac.  'It was PentAgon
who unleashed the War of a Thousand Suns through you, his servants.

That war destroyed the Earth and almost every living thing upon it.

We, the She-Kargo and our soul-brothers and sisters now known as the
Plainfolk, were spared.  We were chosen by Mo-Town to grow strong in
body and great in number, to guard the Earth until the coming of
Talisman."

'Look,' reasoned Steve, 'we both can't be right.  I know what
happened.

It's all recorded in our archives.  What proof have you got that what
you say is the truth?"

'The proof is on the tongues of our wordsmiths.  The history of the
clan M'Call is sealed forever in the fire songs of our people."

Steve laughed.  'I don't believe it.  I don't care if Mr Snow is the
greatest wordsmith of all time.  Nobody can remember everything that's
happened in the last nine hundred years] It's impossible.  The Amtrak
Federation deals in facts billions of bits of verifiable data stored on
silicon chips not a collection of stories made up out of a mish-mash of
old folks memories."

'You use many strange words,' said Cadillac, 'but my mind begins to
grasp their meaning.  Because of the war, many of our people are born
without pockets in their heads.

Their minds cannot hold the past or the knowledge needed for the high
crafts but to some, whom we call wordsmiths, Mo-Town gave the power of
a hundred minds and a thousand tongues."  Cadillac squared his
shoulders and lifted his chin proudly.  'I too have been given this
power.  I know of the valiant deeds of the M'Calls, the history of the
Plainfolk from their beginnings, and the workings of the world.  I have
learned these things from Mr Snow who speaks with the Sky Voices.  You
say you have this Columbus - a thing made with the High Craft which
hold the past of your people ' 'Yes, computer archives,' interjected
Steve.

'The words have a dead sound,' said Cadillac.  'No matter.

If you remember nothing how can you be sure of what these - computer
archives - tell you?"

'That's easy,' replied Steve.  'Computers like Columbus don't forget,
and they don't make things up.  A computer is a machine -' Steve
paused.  'You know what a machine is?"

Cadillac shook his head.

Steve searched their surroundings for something which might explain the
concept.  He pointed at Cadillac's crossbow.  'You see that?  That's a
machine.  It throws bolts.

You could use your hand and arm to throw a bolt but the crossbow throws
it further and faster.  That's why we build machines.  To do things
better and faster than people can do them.  Computers are machines that
think.  Mechanical brains that store information.  "Mechanical" means
machine-like.  You feed in the facts and they remember them.  They also
do all kinds of other things which you wouldn't understand."

'Perhaps it is not necessary to understand these things,' said
Cadillac.

Steve smiled.  'Are you kidding?  When we started, the Amtrak
Federation was little more than a hole in the ground.  Now, thanks to
the First Family and Columbus, we have twelve bases with more building,
linked by linear-drive monorails.  We have two-way video, geo-thermal
power, hydroponic farms with automated weather systems, lasers, powered
flight, the technological know-how to do whatever we want and you
you're still in the stone age."

Cadillac smiled.  'And yet, in spite of these marvels, here you are."

It was the kind of observation Mr Snow would have made and it pleased
Cadillac immensely.

'A lucky shot,' said Steve.

'And the other cloud warriors that fell?"

'Freak weather plus a few bad breaks.  None of that makes any
difference.  It's time you faced up to the facts.  No one can resist
the power of the Federation.  You've seen what The Lady can do.  We
have twenty wagon trains like that and we're building more all the
time.  Ten years from now we'll have a hundred.  In twenty, we'll have
way-stations from coast to coast.  We'll be unstoppable.  We are the
future.  You are the past that's about to be swept away.  You're living
in a make-believe world - Sky Voices, Mo-Town, Names of Power ...

you've all been swallowing too much Dream Cap. I don'iknow where Mr
Snow got his version of history from but, believe me, it didn't happen
like that."

'Are you not sand-burrowers?"  countered Cadillac.  'Do you not live in
the Dark Cities beneath the Great Desert of the South?"

'They're not dark,' replied Steve.  'How many times do I have to tell
you?!  We have electricity.  Neon tubes.  Long sticks that give off
light like the sun."

'They cannot banish the darkness in the mind,' said Cadillac.  'This is
what we mean when we speak of the Dark Cities.  The truth stands in the
words of the Plainfolk.  After the War of a Thousand Suns, Pent-Agon
and his servants you, the sand-burrowers - were buried beneath the
earth as punishment for your crimes against the world."

'We must have been let off for good behaviour,' said Steve lightly.
 

人脸识别签到考勤系统实战源码 这是一套可直接运行的人脸识别智能签到考勤系统,基于OpenCV YuNet人脸检测与SFace特征识别实现,全程本机运行,数据保存在本地SQLite,不上传任何服务器。配套交付完整Python源码、9章实战教程(md/html/pdf三种格式)、逐步骤操作截图和答辩PPT讲解。 系统围绕五个功能模块展开:人脸注册支持照片批量导入并提取特征入库;识别签到支持照片或摄像头两种方式,实时框出人脸并标注姓名、相似度与考勤状态;考勤规则引擎按config.py里配置的上下班时间与宽限分钟,自动判定迟到、早退、缺勤;Tkinter管理面板完成人员管理、流水查询与月度汇总;最后通过openpyxl一键导出整月考勤矩阵,正常绿、迟到黄、缺勤红,Excel打开即用。 选型上特意选了YuNet+SFace路线:纯pip安装免编译,CPU单帧识别不到100ms,两个ONNX模型共约37MB,出自OpenCV官方模型仓库,毕设报告引用有据可查。教程第7章整理了16条Windows下真实踩过的报错及排查方法,第8章给出换模型、换人脸、加功能的二次开发路径。 适合做计算机视觉方向毕设或课程设计的学生,也适合想给班级、实验室、小团队搭一套本地签到工具的Python学习者。运行环境为Python 3.9以上、Windows 10/11,不需要GPU。 使用时先pip install -r requirements.txt装齐依赖,再运行download_data.py下载模型,最后启动main.py即可进入图形界面;命令行register、recognize、report子命令也可脱离界面单独调用。 立即下载

相关推荐

【无人机航测】MATLAB重叠率与地面分辨率协同设计:航线间距及飞行方向优化系统 MATLAB 无人机航测重叠率设计|地面分辨率与航线间距计算

内容概要:本文档介绍了基于MATLAB R2025b开发的无人机航测重叠率与航线间距计算系统,旨在通过建立统一的航测几何计算体系,实现重叠率、地面分辨率与航线间距的动态协同设计。系统结合相机参数、飞行参数、地形数据与风场信息,通过自动化候选航向搜索与多目标优化,选择兼顾覆盖质量、飞行效率与安全性的最优航线方向。项目涵盖从参数输入、摄影测量计算、地形与安全修正,到候选路线生成、综合评价与结果可视化的全流程,并构建了五万组模拟数据用于算法验证与模型训练,支持桌面交互、批量处理与服务化部署,适用于多种复杂场景下的无人机航测任务规划。 适合人群:具备一定MATLAB编程基础和摄影测量知识的科研人员、工程技术人员及高校师生,尤其适合从事无人机航测、地理信息系统(GIS)、遥感与测绘等相关领域的从业者。 使用场景及目标:① 实现无人机航测任务中地面分辨率与航线间距的精确计算与动态优化;② 解决复杂地形与风场环境下航线方向选择困难、覆盖质量难以保障的问题;③ 通过自动化设计减少人为经验依赖,提升航测任务的可靠性与效率;④ 为后续的三维建模、正射影像生成与灾害应急评估等应用提供高质量的数据基础。 阅读建议:建议读者结合文中提供的完整代码示例与GUI界面设计,逐步实践参数配置、模型计算与结果分析流程。重点关注摄影测量公式推导、地形修正策略与多目标优化算法的实现细节,并利用模拟数据进行敏感性分析与模型验证,以深入理解系统的设计理念与工程应用价值。

【顶级EI复现】基于KKT条件与分段解析优化的双有源桥DC-DC变换器软开关协同最小应力闭环控制方法(Simulink仿真实现)

内容概要:本文详细介绍了一种基于KKT(Karush-Kuhn-Tucker)最优性条件与分段解析优化技术的双有源桥(DAB)DC-DC变换器闭环控制方法,旨在实现软开关条件下器件电压和电流应力的协同最小化,从而提升变换器的转换效率与系统可靠性。该方法通过建立精确的数学模型,结合KKT条件进行优化求解,并采用分段解析策略提高实时控制性能,在Simulink环境中完成了完整的闭环控制系统建模与仿真验证。作为“顶级EI复现”级别的研究成果,内容涵盖控制算法设计、优化机制分析、仿真架构搭建及结果对比,具有较强的理论深度与工程应用价值,适用于电力电子高频化、高效化发展的前沿研究方向。; 适合人群:面向具备电力电子、自动控制或电气工程等相关专业背景,熟悉Simulink仿真平台,且从事科研工作1年以上的研究生、博士生及科研人员;特别适合致力于DC-DC变换器拓扑优化、软开关技术、最小化开关应力控制、能量高效传输等领域研究的专业人士。; 使用场景及目标:① 复现高水平EI期刊论文中的先进优化控制算法;② 掌握KKT条件在非线性约束优化问题中的具体应用;③ 深入理解DAB变换器在不同工况下的软开关实现机制与应力抑制策略;④ 构建高精度仿真模型以支撑学术论文撰写、科研项目申报或实际工程系统的控制方案设计。; 阅读建议:建议结合提供的Simulink仿真模型同步学习,重点关注KKT条件推导过程与分段解析优化模块的实现逻辑。由于内容涉及较强的数学建模与优化理论,推荐具备扎实的电路理论、现代控制理论及数值优化基础后再行研读,并可参考同系列“顶级EI复现”资源以构建系统性知识体系。

【电力负荷预测】项目介绍 MATLAB实现基于BO-Transformer-LSTM贝叶斯优化算法(BO)优化Transformer-LSTM组合模型进行居民用户多步电力负荷预测(含模型描述及部分示例

内容概要:本文介绍了一个基于BO-Transformer-LSTM的组合模型,用于实现居民用户多步电力负荷预测的完整项目实例。该模型融合Transformer的全局注意力机制与LSTM的局部时序记忆能力,构建能够捕捉长时依赖与周期性特征的深度学习架构,并引入贝叶斯优化(BO)自动搜索最优超参数组合,提升预测精度与训练效率。项目涵盖从原始数据清洗、特征工程、滑动窗口样本构建、模型设计到超参数优化、反归一化及多步误差评估的全流程,强调时间顺序划分以防止信息泄露,并通过周期编码、外生变量融合等方式增强数据表达能力。文中提供了详细的MATLAB代码示例,包括数据预处理、网络搭建、贝叶斯优化配置和预测结果评估等关键步骤。 适合人群:具备一定机器学习和时间序列分析基础,熟悉MATLAB编程环境,从事电力系统预测、智能电网、负荷管理等相关领域的研究人员、工程师及研究生。 使用场景及目标:①应用于居民级或多用户聚合负荷的短期至中期多步预测(如未来24小时);②服务于配电系统运行调度、需求响应基线设定、家庭能源管理系统优化、分布式能源协调控制等实际工程场景;③为科研提供可复现的深度学习+贝叶斯优化的技术路线参考。 阅读建议:此资源以实际项目为导向,建议读者结合提供的代码逐步实现并调试模型,重点关注数据质量控制、时间特征编码、组合网络结构设计与贝叶斯优化稳定性之间的协同关系,在实践中深入理解多步预测中的误差累积机制与超参数敏感性问题。

交错并联图腾柱PFC变换器仿真设计(Simulink仿真实现)

内容概要:本文档系统性地介绍了基于Simulink平台的“交错并联图腾柱PFC变换器”仿真设计,聚焦于高效率功率因数校正技术的建模与实现。内容涵盖双闭环控制策略(电压外环与电流内环)、PI控制器设计、交错并联结构优化以及图腾柱拓扑的工作原理,旨在提升系统动态响应性能、降低输入电流谐波含量并改善功率因数。文档不仅提供详细的仿真模型构建流程,还配套Mathcad计算书用于参数设计与功率等级扩展,并列举了多种相关电力电子变换器的仿真案例,如三相维也纳整流器、LLC谐振变换器、双向Buck-Boost电路等,形成了一套完整的电力电子系统仿真资源体系,适用于从理论分析到工程实践的全流程学习与研究。; 适合人群:电气工程、自动化、电力电子及相关专业的高校本科生、研究生,以及从事新能源发电、电源设计、电能质量治理、工业自动化等领域的研发工程师;具备基本电路理论知识和Simulink/Matlab使用经验者更佳。; 使用场景及目标:①支持高校课程设计、毕业设计或科研项目中对先进PFC拓扑的仿真验证与性能优化;②帮助工程技术人员快速掌握图腾柱PFC的核心控制逻辑与建模方法,缩短产品开发周期;③作为电力电子系统教学与技术培训的标准化参考案例,强化理论与实践结合能力。; 其他说明:文档由“荔枝科研社”整理发布,所有资源可通过指定公众号或百度网盘链接获取,建议按照目录顺序系统学习,并结合提供的Mathcad计算书、参考文献及仿真文件进行参数验证与二次开发,以深化理解与应用能力。

测试用的衣橱app小软件,自己玩撒打算

测试用的衣橱app小软件,自己玩撒打算

【智能制造排程】基于双层编码遗传算法的柔性作业车间调度模型:工序排序与机器选择联合优化 项目介绍 MATLAB 柔性作业车间排程|遗传算法与机器选择双层编码

内容概要:本文介绍了一个基于MATLAB的柔性作业车间排程项目,采用遗传算法与双层染色体编码技术实现工序排序与机器选择的联合优化。项目构建了统一的排程模型,涵盖工件工序、候选机器、加工时间、设备能力、能耗及交付时间等要素,通过双层编码结构(工序序列层与机器选择层)分别处理加工顺序和设备分配问题,并设计了相应的解码机制、遗传操作与综合适应度函数,以最小化最大完工时间、降低设备空闲损失、提升负载均衡与能源效率为目标。系统支持模拟数据生成,融合多种概率分布反映实际生产不确定性,并输出甘特图、收敛曲线和设备利用率等结果,具备良好的可扩展性,可用于智能制造排程算法研究与实际系统开发。; 适合人群:具备一定编程基础,熟悉MATLAB环境,从事生产调度、智能制造、运筹优化等相关领域的研究人员、工程技术人员及高校研究生;有志于学习遗传算法在工业排程中应用的1-3年经验研发人员。; 使用场景及目标:①解决柔性作业车间中工序排序与机器选择耦合的复杂调度问题;②优化制造系统的最大完工时间、设备利用率、能耗与订单交付表现;③为MES、数字孪生、智能车间等系统提供核心排程算法模块;④作为教学案例或科研平台,用于算法对比、参数调优与动态重排程研究。; 阅读建议:此资源以MATLAB实现为核心,包含完整代码结构与数据生成逻辑,建议结合文中提供的代码示例进行实践运行与调试,深入理解双层编码机制、解码流程与遗传操作的设计思想,并可根据实际需求调整适应度权重或引入新约束条件进行二次开发。

超全Mathcad全桥LLC谐振变换器开关电源设计mathcad计算书

内容概要:本文介绍了“Plecs全桥LLC谐振变换器仿真模型”这一技术资源,该模型基于Plecs仿真平台构建,完整实现了全桥LLC谐振变换器的电路拓扑与控制系统,用于深入研究其在变频与移相混合控制策略下的动态行为。模型涵盖了软开关实现机制、谐振腔参数设计、功率传输特性、效率优化以及闭环控制策略等核心内容,支持对启动过程、负载突变、频率调节等工况的仿真分析,有助于全面掌握LLC变换器在高效率、高功率密度电源系统中的工作原理与设计方法。; 适合人群:具备电力电子技术基础、熟悉开关电源设计原理的研究生、硬件工程师及从事高频电源产品研发的技术人员。; 使用场景及目标:①用于高校教学与科研中对LLC谐振变换器运行机理的深入理解与验证;②辅助工程师在实际产品开发中进行关键参数设计、性能预测与优化;③支持对变频控制、软启动过程、零电压开关(ZVS)实现条件、负载调整率及系统稳定性等关键指标的仿真分析与验证。; 阅读建议:建议使用者具备Plecs或类似电力电子仿真软件的操作经验,结合经典电力电子教材与LLC设计指南进行学习,通过调整谐振元件参数、开关频率与负载条件,观察系统响应变化,以深化对谐振变换器非线性动态特性的理解,并建议将仿真结果与理论计算对照分析,提升工程设计能力。

产业园区如何通过数智工具精准识别企业技术需求,提高服务匹配效率?.docx

科易网基于AI模型+行业大数据,在技术转移、成果转化、技术经纪、知识产权、产业创新、科技招商等垂直领域的多样化应用场景,推出科技创新领域的AI+工具与数智化解决方案,推动科技创新与产业创新智能化发展。

game.c.docx

game.c.docx

市级区域_打包.zip

这组资源是基于阿里云 DataV 平台提取的**全国省、市、县三级行政区划矢量数据**,文件格式为通用性极强的 **GeoJSON**。它轻量且结构清晰,不仅易于人类阅读,还能直接拖入 QGIS、ArcGIS 进行制图,或通过 Python (Geopandas)、JavaScript 等代码直接读取调用。 在内容涵盖上,数据从“全国 (100000)”向下细分至省级、地级市,以及县级/市辖区。每个要素(Feature)都完整包含了多边形的经纬度边界坐标,以及极其关键的 `adcode`(国家行政区划代码)、名称(name)、中心点(center)等属性。这允许你在制图时直接按代码或名称精准定位,进行数据聚合或空间裁剪。 在结构设计上,资源巧妙地兼顾了“宏观嵌套”与“微观独立”。例如,带 `_full` 后缀的市级文件,内部直接包含了该市下辖所有区县的边界,适合做全省/全市的整体可视化;而单独无后缀的区县级文件,则适合精细化拆分。此外,直辖市辖区(如北京东城区)已被正确归入县级资源,避免了层级混淆,是一套非常适合做 Web 地图可视化或本地空间分析的底图资产。

科技中介服务机构在支持企业科技成果转化时,如何实现高效资源推送与项目管理?.docx

科技中介服务机构在支持企业科技成果转化时,如何实现高效资源推送与项目管理?

PHP 安全库 HTMLPurifier 4.19.1 富文本 XSS 过滤源码包

内容概要:HTMLPurifier 4.19.1 源码包,是 PHP 后端成熟的 HTML 白名单清洗库,可过滤 XSS 恶意代码,自动修复不规范 HTML,支持 CSS 校验。 适用人群:PHP 开发工程师、后端安全开发、CMS / 富文本系统开发者。 使用场景:评论、文章、工单等用户提交富文本内容的安全过滤,支持手动引入或 composer 安装。 其他说明:支持 PHP5.6~8.5 版本,生产建议开启缓存提升性能,基于白名单机制,安全可靠。

【运维自动化】shell脚本自动化运维示例2

内容概要:本文介绍了shell脚本在自动化运维中的实际应用,重点展示了一个批量远程执行命令与文件分发的典型场景。通过编写健壮的Shell脚本,实现对多台服务器并行执行指定命令(如磁盘使用情况查询),并集成错误处理、超时控制和并发管理机制,提升运维效率与系统稳定性。脚本采用set -euo pipefail增强容错能力,利用SSH免密登录和xargs并行处理实现高效批量操作,同时强调在受控内网环境中运行以保障安全。; 适合人群:具备Linux系统基础和Shell编程经验,从事运维、DevOps或后端开发工作1-3年的技术人员。; 使用场景及目标:①用于批量服务器状态检查、配置同步、日志收集等日常运维任务;②帮助理解自动化脚本设计中的健壮性要素(如错误捕获、并发控制、安全性考虑)并应用于生产环境。; 阅读建议:此资源提供可直接修改复用的实用脚本范例,建议结合自身运维环境进行适配测试,重点关注SSH安全配置、并发参数调优及异常输出捕获,确保在真实部署中稳定可靠。

半桥LLC谐振DCDC变换器的设计与仿真(Simulink仿真实现)

内容概要:本文系统阐述了半桥LLC谐振DCDC变换器的设计原理与Simulink仿真方法,重点围绕其开环与闭环控制系统展开建模与分析。内容涵盖LLC谐振变换器的工作原理、谐振腔参数设计、软开关实现机制、增益特性分析,以及恒压恒流双闭环控制策略的实现方式。通过构建完整的Simulink仿真模型,验证变换器在不同输入电压和负载条件下的动态响应性能与系统稳定性,深入揭示其高效率、高功率密度的技术优势,为实际电源系统如充电桩、车载电源及工业电源等应用场景提供理论支撑与仿真验证手段。; 适合人群:具备电力电子技术基础,熟悉DCDC变换器拓扑结构与控制理论,从事新能源变换系统、开关电源研发或正在进行相关课题研究的研究生、工程师及科研技术人员。; 使用场景及目标:①掌握LLC谐振变换器的关键工作模态与谐振参数设计方法;②学习基于Simulink平台的电力电子系统级建模与闭环控制器设计流程;③为高频高效DCDC变换器的实际工程项目提供设计参考与仿真验证方案; 阅读建议:建议结合文中所述仿真模型,动手搭建Simulink环境,逐步调试谐振元件参数与控制环路PI参数,深入理解谐振频率、电压增益曲线与环路稳定性之间的耦合关系,并可延伸学习全桥LLC、双有源桥DAB等先进拓扑,进一步提升电力电子系统设计能力。

国央企创新负责人如何通过平台实现科研成果的快速识别与转化?.docx

科易网基于AI模型+行业大数据,在技术转移、成果转化、技术经纪、知识产权、产业创新、科技招商等垂直领域的多样化应用场景,推出科技创新领域的AI+工具与数智化解决方案,推动科技创新与产业创新智能化发展。

PotPlayer自用皮肤

自用 PotPlayer 皮肤,仅微调了字体大小与颜色,是按个人习惯调整,未做适配性调整。

科技中介服务机构如何提升服务效率与用户黏性?.docx

科易网基于AI模型+行业大数据,在技术转移、成果转化、技术经纪、知识产权、产业创新、科技招商等垂直领域的多样化应用场景,推出科技创新领域的AI+工具与数智化解决方案,推动科技创新与产业创新智能化发展。

2-shell及常用命令-续.pdf

2-shell及常用命令-续.pdf

上一篇: 《The Amtrak Wars I : Cloud_Warrior》16
下一篇: 《The Amtrak Wars I : Cloud_Warrior》18
DaNmarner
博客等级 码龄21年 27粉丝 91原创
评论
成就一亿技术人!
拼手气红包6.0元
还能输入1000个字符
 
 条评论被折叠 查看
添加红包

请填写红包祝福语或标题

个

红包个数最小为10个

元

红包金额最低5元

当前余额3.43元 前往充值 >
需支付:10.00元
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付元
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值