A...B...Sea

Dianna Bonder's whimsical alphabet picture books have been capturing the hearts and minds of our earliest readers for over 10 years.Now, in this all-new picture book, Dianna illustrates the ocean, cap

9786263072350 樹的透視書了解樹的不同部位怎麼分工合作、讓樹持續成長，並探索樹如何以各種方式協助人類與動物。樹太神奇了，快準備好翻開書吧！ 從樹頂到根尖，樹木裡面充滿了驚奇的小祕密！本書運用特殊的透明頁設計，一層一層剖析大樹生態系，帶領讀者認識身邊的樹木，看樹木隨著季節發生的變化，以及如何提供棲所給各種動物。9781474992145 Usborne Book and Jigsaw: Tree of Life (300片拼圖+16頁小書)A beautiful Tree of Life Jigsaw Puzzle accompanied by a 16pp book that explores the whole tree of life from microscopic bacteria to whole rainforest ecosystems, packed with information about how life works, what makes a living thing, and all sorts of the Earth’s amazing plants and animals.300片拼圖+16頁小書拼圖完成尺寸59*40公分

趁著哈洛小森林的動物們正在慶祝著四季的交替和各種重要的節日時，讓我們隨著他們的腳步，一同走進這些活潑的小故事中探險吧！中英對照，讓你 365天都有新鮮有趣的故事。 There^s an adventure for every day of the year, and you can read the stories one at a time or in bunches. If you like

套書包含以下商品97813680816895-Minute Moana Stories97813680555295-Minute Under the Sea Stories

Go on an amazing journey of discovery with the Very Hungry Caterpillar and learn about ocean wonders, from sharks to seamounts.Take a tour of the blue planet and discover everything you need to know about ocean geography and the animals that live beneath the waves.Topics range from individual sea creatures and their habitats, to how tides work and the ways in which we can look after the oceans. Bite-size chunks of information are complemented by captivating illustrations in Eric Carle's unique style, eye-catching photography, and simple how-it-works diagrams, while pull-out images and facts provide extra nuggets of interest. Young learners can find out all about marine mammals, deep sea fish, ocean zones, currents, islands, exploration, pollution, and much more in this one-of-a-kind introduction to oceans.For lovers ofThe Very Hungry Caterpillarand all bright young minds, this is the ultimate must-have oceans encyclopedia.

Featuring asilver-foil-embossed cloth cover, aribbon markerandsprayed silver edges, this gorgeous volume is filled withbeautiful illustrations and precise notes detailing the secret life of mermaids.In 1872, intrepid (fictional) explorer Darcy Delamare disguised herself as a man to claim a place on board the (real life) scientific expedition of the HMSChallenger.She made a record of her findings on the trip, recounting the extraordinary sea creatures she witnessed: creatures that, until now, nobody had believed really existed... mermaids!Following on from the beautiful A Natural History of Fairies and A Natural History of Magick, this beautifully illustrated vintage album is filled with descriptions and illustrations of Delamare's findings, from tales of mermaids in ancient lore to more recent sightings as well as facts on the beliefs and superstitionssurrounding these elusive creatures.Children will delight in discovering the anatomy, behaviour and lifecycles of the Merfolk and how th

Discover the exciting world of animals Creatures of land, sea, and air--including elephants, spiders, snakes, falcons, and whales--fill the pages of this interactive book, providing a comprehensive ov

本系列由暢銷作家 Mac Barnett 創作，以「作者的童年其實是祕密間諜生涯」為幽默設定，打造一套節奏明快、充滿笑點的間諜故事。故事融合間諜冒險、誇張行動與真實歷史事件，讓孩子在閱讀中自然接觸世界史與地理知識。文字與插畫配合，降低閱讀門檻，也提升趣味性。是一套能讓孩子笑著翻頁、在不知不覺中把書讀完的系列。James Bond meets Diary of a Wimpy Kid with this groundbreaking new fully-illustrated chapter book series Mac B., Kid Spy. The precious Crown Jewels have been stolen, and there's only one person who can help the Queen of England: her newest secret agent, Mac B. Mac travels around the globe in search of the stolen treasure...but will he find it in time?From secret identities to Karate hijinks, this fast-paced, witty and historically inspired chapter book will keep readers guessing until the very last page. With full-color illustrations and fascinating historical facts masterfully sprinkled throughout, this series offers adventure, intrigue, absurdity, history and humor. Discover this totally smart and side-splittingly funny new series, and experience what it's really like to be a kid spy.套書包以下書籍：#1: Mac Undercover (9781338143591)Before

A spectacular new title from world-renowned artist Oliver Jeffers, creator of the million-copy selling, global phenomenon Here We Are!What shall we build, you and I?I’ll build your future and you’ll b

Submarines played a major role in the war at sea in the years 1939-45, and this major reference book describes all the classes of vessel that were deployed by the eighteen combatant nations during tho

The “ASEAN Way” is based on the principle of consensus; any individual member state effectively has a veto over any proposal with which it disagrees. Dividing ASEAN and Conquering the South China Sea

Throughout history, there has been an intrinsic need for humans to detect deception in other humans. Developed in 1923, the polygraph machine was a tool designed to do just this. To date, there have b

Every day, in a house by the sea, a little boy watches his father leave for a long day's work. One night, a great storm washes a small whale onto the beach. The boy discovers the whale is a good list

Design processes wisely.Grow your business endlessly.“Design for Operational Excellence is a blueprint for a joined up, end-to-end designed operation that makes Operational Excellence a reality. The b

"Once there was a tree ... and she loved a little boy." So begins a story of unforgettable perception, beautifully written and illustrated by the gifted and versatile Shel Silverstein. Every day the b

It’s off to the races in the explosive eighth book in the Dungeon Crawler Carl series—featuring bonus material exclusive to this print edition.As chaos and mass panic spread outside the dungeon in the wake of Faction Wars, Carl and Donut find themselves on the tenth floor, where they’re forced to compete in a surprisingly normal set of tasks. Well, normal for the dungeon.Races. Get from point A to point B, and don’t come in last. After each race, they pick an upgrade for their vehicle and the track gets more challenging. It all seems a littletoonormal, a littletoosimple.Ignore those strange glitches that are occurring with increasing frequency. Don’t listen to those whispers about what’s happening on the mysterious eleventh floor, something the system AI callsA Parade of Horribles. Nobody, not even the showrunners, knows what that means. Just that the AI has ominously dubbed it “a coming-out party for the ages.”Everything is fine, Crawler. I repeat, everything is fine.Carl hates that i

本書以水彩與素描描繪威尼斯的經典風景與隱藏角落，呈現其歷史風華與細膩氛圍。透過藝術視角，帶領讀者感受這座水都的浪漫與時間之美。… Venice at dawn, seen from the deck of the ship …A Venice wobbling in a thousand fresh-water reflections, cool as a jelly. It was as if some great master, stricken by dementia, had burst his whole colour-box against the sky to deafen the inner eye of the world. Cloud and water mixed in with each other, dripping with colours, merging overlapping, liquefying, with steeples and alconies and roofs floating in space, like the fragments of some stained glass window seen through a dozen veils of rice – paperOne of Europe’s most beautiful cities is celebrated through the talents of artist Fabrice MoireauVenice, a mosaic of over 100 islands, many connected by the 400 bridges which span its famous canals, is possibly the most romantic city in the world. It began as a village in the marshes and grew into a formidable sea power, dubbed the Queen of the Adriatic. Now its fading glories - the canals and palaces, monuments and churches —

Winner of the Josette Frank Award for Fiction ♦ An NPR Best Book of the Year ♦ An Amazon Best Book of the Year ♦ A Publishers Weekly Best Book of the Year ♦ A Kirkus Reviews Best Book of the Year ♦ A School Library Journal Best Book of the Year ♦ A Christian Science Monitor Best Book of the Year ♦ A New York Public Library Best Book of the Year ♦ A Bank Street College of Education Best Book of the Year ♦ A YALSA Top Ten Best Fiction for Young Adults pick ♦ A Goodreads Choice Award nominee ♦ An Indiana Elliot Rosewater Book Award nomineeA gut-wrenching, startling historical thriller about communist Romania and the citizen spy network that devastated a nation, from the #1 New York Times bestselling, award-winning author of Salt to the Sea and Between Shades of Gray.Romania, 1989. Communist regimes are crumbling across Europe. Seventeen-year-old Cristian Florescu dreams of becoming a writer, but Romanians aren’t free to dream; they are bound by rules and force.Amidst the tyrannical dictat

In the vein of Jon Krakauer's Into the Wild, a riveting work of narrative nonfiction centering on the unsolved disappearance of an American backpacker in India--one of at least two dozen tourists who have met a similar fate in the remote and storied Parvati Valley.For centuries, India has enthralled westerners looking for an exotic getaway, a brief immersion in yoga and meditation, or in rare cases, a true pilgrimage to find spiritual revelation. Justin Alexander Shetler, an inveterate traveler trained in wilderness survival, was one such seeker.In his early thirties Shetler quit his job at a tech startup and set out on a global journey: across the United States by motorcycle, then down to South America, and on to the Philippines, Thailand, and Nepal, in search of authentic experiences and meaningful encounters, while also documenting his travels on Instagram. His enigmatic character and magnetic personality gained him a devoted following who lived vicariously through his adventures. B

From the mysteries and wonders of the natural world to man-made marvels in science, technology, and innovation, planet Earth is full of fun and fascinating things to discover at any age. Although most knowledge can be obtained online today, there is nothing quite like the charm of learning from a book packed with witty writing and illustrations like Diarmuid Ó Catháin’s compelling series on Little-known Facts. 9789887972600 Animals 動物The Animals edition presents some of the most intriguing details about the creatures that inhabit our land, air, and sea using clever rhymes and visuals that make for an enjoyable and eye-opening reading experience.9789887972648 The Human Body 人體奧秘Brimming with character, The Human Body edition presents readers with the unique opportunity to explore the extraordinary and unexpected traits and biology of people in an easy-to-remember and visually delightful way.

收錄宮崎駿《風之谷》動畫電影幕後創作全記錄，從手繪草圖、水彩原稿到動畫分鏡與設定稿，完整呈現這部1984年經典之作的誕生歷程。見證一位動畫大師如何用畫筆建構出壯闊奇幻又深具環境意識的末日世界。An epic fantasy written and illustrated by the legendary director Hayao Miyazaki!An addition to the perennially popular line of Studio Ghibli art books—which include interviews, concept sketches, and finished animation cels—of classic animated films such as Spirited Away and My Neighbor Totoro.Hayao Miyazaki’sNausicaä of the Valley of the Wind, based on his own manga, was released in 1984 and has been a cult classic ever since. In a long-ago war, humankind set off a devastating ecological disaster. The earth is slowly submerging beneath the expanding Sea of Decay, an enormous toxic forest that creates mutant insects and poisonous spores. Beyond the sea lies the Valley of the Wind, a kingdom of barely 500 citizens and home to Nausicaä, who risks everything to save her people and bring peace and health to the valley. Includes sketches, developmental water colors, cel animation, and more.

Touch, feel and hear the noisy vehicles of the road, rails, sea and sky in this interactive board book. It's packed with appealing photographs, fun facts, tactile textures and exciting vehicle sounds.

Are you using natural remedies to reduce stress or improve your health? With the fully updated and revised Encyclopedia of Herbal Medicine, you can join the ever-increasing numbers that are. Written b

"The finest book on De Niro yet.&uqot; – The Film Stage Best known for gangster films, Robert De Niro (b.1943) has led a rich and varied career that encompasses crime movies, musicals, comedies, p

This book, whose primary aim is to describe liquefaction processes and their implications for marine strucutres such as pipelines, sea outfalls, quay walls and caisson breakwaters, discusses the subje

Cold-calling is history—your future is in social media! The growth of LinkedIn, Twitter, and Facebook have revolutionized how business is done. Professionals of every type-including your prospective b

Where is Mount Sinai?Did the Exodus really take place?Is the Bible a work of history, or simply literature?These are some of the perplexing questions that are answered in The Gold of Exodus, the gripping true story of two adventurers who enter forbidden territory to explore the mountain in Saudi Arabia known as Jabal al Lawz. And their amazing discoveries at that remarkable site will shape our view of the Bible forever."This is an intriguing thriller and adventure that has everything—and best of all, it is a true tale. Blum knows how to make the action flow. You can't help but be swept up by it." ～～ Clive Cussler, author of flood tide and the sea hunters"The visible evidence found in Howard Blum's The Gold of Exodus is remarkable and quite overwhelming. It appears that the location of the true Mount Sinai has at last been discovered." ～～ Dr. Roy Knuteson, former professor of Biblical Archaeology and New Testament Greek, Northwestern College, Minneapolis"The Gold of Exodus is compulsive

《獸醫重點照護超音波在胸膜腔與肺部的應用》聚焦即時照護超音波（POCUS）於獸醫急診與重症領域的臨床實務，系統性介紹胸膜腔與肺部超音波（PLUS）的操作技巧與判讀原則。全書由基礎原理出發，涵蓋儀器設定、探頭操作、病畜擺位及標準化掃描流程，並詳述正常影像特徵與關鍵徵象，如A線、B線與肺滑動等，奠定臨床判讀基礎。進一步透過「二分法問題」架構，引導讀者快速回應臨床關鍵情境，包括氣胸、胸膜腔積液及B線增加的判斷與鑑別，並整合診斷流程、常見陷阱與臨床意義。內容強調將影像結果結合病史與理學檢查，以提升診斷準確性。全書圖像豐富、結構清晰，並提供影音輔助學習，是臨床獸醫師於第一線快速評估與決策的實用指南。

★描寫母愛在不同形式中的力量與痛苦★探討親情斷裂與重建帶來的情感衝擊★以細膩筆觸展現人性與自我救贖的過程《Love Forms》是特立尼達作家Claire Adam於2025年出版的小說，聚焦於母愛的多種面向。故事主角是倫敦中年女性道恩（Dawn），十六歲時生下女兒但被迫送養。數十年後，離異且獨居的她透過線上尋親社區，試圖與親生女兒重新建立聯繫。小說深刻描繪道恩內心的隱秘創傷及愛的複雜與糾結，被譽為一部細膩且震撼心靈的傑作。LONGLISTED FOR THE BOOKER PRIZE 2025'A quietly devastating masterpiece'. MARIAN KEYES'Adam is a master storyteller.' SARA COLLINS'Love Forms achieves a sort of alchemy.' FINANCIAL TIMES'Reads like a Claire Keegan short story expanded by Elizabeth Strout.' THE TIMESIn the heart-aching new novel from the author of the award-winning Golden Child, a mother searches for the daughter she left behind a lifetime ago.Trinidad, 1980: Dawn Bishop, aged 16, leaves her home and journeys across the sea to Venezuela. There, she gives birth to a baby girl, and leaves her with nuns to be given up for adoption.Dawn tries to carry on with her life - a move to England, a marriage, a career, two sons, a divorce - but through it all, she still thinks of the child she had in Venezuela, and of what

完整記錄紅戰狗與大口戰狗從原生型鑑賞、配對到繁殖育成的過程，帶領讀者深入探索原鬥魚獨特魅力與實戰繁殖技巧。本書介紹了來自東南亞的口孵鬥魚。本書重點在於單斑鬥魚（B. unimaculata）複合種群，該複合種群均為雄性口孵魚，其中大多數研究較少，或在野外瀕臨滅絕。作者霍斯特•林克（Horst Linke）匯集了他多年來在野外和水族箱中收集、繁殖和觀察這些物種所積累的知識。

The newest graphic novel in the #1 bestselling series by Dav Pilkey, the author and illustrator of Dog Man!The Cat Kid Comic Club is in crisis! After learning that one of their comics will be published, the baby frogs are filled with anxiety and doubt. How will they get their creative groove back? Will Naomi or Melvin emerge as a leader? Will Flippy convince them to finally straighten up and fly right?The story is hysterical, thought-provoking, and full of action-packed mini-comics: "Frogzilla vs. Mechafrogzilla," "I Am Dr. Fredric Wertham," "Two Birds," and "RoboChubbs." Bestselling author-illustrator Dav Pilkey shows the reader that the best way to influence people is to be open, gentle, and kind. The variety of art styles, paired with Pilkey's trademark storytelling and humor, inspires imagination and innovation for readers of all ages.For more hilarity and heart, dive into the newest graphic novel in the Dog Man series: Dog Man: Twenty Thousand Fleas Under the Sea. And don't forget

Having made documentary films screened at the most prestigious film festivals in the West, Chinese documentary filmmaker Wang Bing presents a unique case of independent filmmaking. In The Cinema of Wang Bing, Bruno Lessard examines the documentarian’s most important films, focusing on the two obsessions at the heart of his oeuvre—the legacy of Maoist China in the present and the transformation of labor since China’s entry into the market economy—and how the crucial figures of survivor and worker are represented on screen. Bruno Lessard argues that Wang Bing is a minjian (grassroots) intellectual whose films document the impact of Mao’s Great Leap Forward on Chinese collective memory and register the repercussions of China’s turn to neoliberalism on workers in the post-Reform era. Bringing together Chinese documentary studies and China studies, the author shows how Wang Bing’s practice reflects the minjian ethos when documenting the survivors of the Great Famine and those who have not b

★日本重量級思想家柄谷行人跨科際、整合全面知識的顛峰之作！★以動態的「力」而非靜態模式來理解歷史的運作，指出人類未來的方向！柄谷行人在經濟歷史學的貢獻，是以四種「交換模式」出發的觀點，補充、擴大了馬克思《資本論》中「生產模式」所無法涵蓋的層面。繼二〇一〇年奠定其理論體系的《世界史的結構》，十二年後，他在本書中進一步修補社會主義理論的基礎、說明歷史演變的原理，並以交換模式D作為對未來的展望。在這本被視為柄谷思想體系的顛峰之作中，柄谷行人以「物神」、「靈」的角度，闡述是什麼樣的「力」促使交換模式A（互酬式：贈予與回禮）、B（服從與保護：掠奪與再分配）、C（商品交換：貨幣與商品）、D（A在高次元中的回復）的複雜運作。在四種交換模式中當中，各自有強大的「力」在糾纏、拮抗。這些「力」難以被察覺，因此歷來學者少能釐清。例如，「交換模式C與B都具有超越人類意志的『力』。在民主主義的國家體制裡，人們認為自己是自由的；但他們並沒有察覺，自己只是變得對C與B的『力』更順從而已。」若不釐清「力」的真相，便難以具體描繪出模式D，人類將難以走出當今的困局。歷史上，嘗試揚棄國家（模式B）與資本（模式C）的學者大有人在，馬克斯避免了「神」的觀點，而康德則將社會的歷史，視為自然的「隱微的計畫」。他在社會的歷史中，發現了既不是人、也不是神的某種作用，並稱之為「自然」。柄谷行人則循著康德的思路，認為這「自然」就是模式D的作用。而模式D，將是未來人類的出路。紀金慶｜臺師大通識中心兼任助理教授黃雅嫺｜國立中央大學哲學研究所助理教授廖欽彬│廣東中山大學哲學系教授龔卓軍│臺南藝術大學藝術創作理論研究所副教授董啟章│小說家鄭重推薦（按姓氏筆劃排列）

托爾金曾形容中土世界的第二紀元是「黑暗時代」，僅在《魔戒》與附錄中留下片段記載，如力量之戒的鑄造、巴拉督爾的建立，以及索倫的崛起。《努門諾爾的陷落》由 Brian Sibley 編選，依據《魔戒》附錄「年代記」時間線，將托爾金於不同作品中對第二紀元的敘述匯集成完整編年史，包括《精靈寶鑽》、《未完成的故事》與《中土世界的歷史》系列的內容。書中由 Alan Lee 以水彩與鉛筆繪製全新插畫，重現努門諾爾的興盛與滅亡，以及精靈與人類最後同盟的史詩篇章。J.R.R. Tolkien famously described the Second Age of Middle-earth as a ‘dark age, and not very much of its history is (or need be) told’. And for many years readers would need to be content with the tantalizing glimpses of it found within the pages of The Lord of the Rings and its appendices, including the forging of the Rings of Power, the building of the Barad-dûr and the rise of Sauron. It was not until Christopher Tolkien published The Silmarillion after his father’s death that a fuller story could be told. Although much of the book’s content concerned the First Age of Middle-earth, there were at its close two key works that revealed the tumultuous events concerning the rise and fall of the island of Númenor. Raised out of the Great Sea and gifted to the Men of

This book contains analysis of different domains of contemporary art in China seen through the lens of the epistemological changes described in China Pluperfect I: Epistemology of Past and Outside in Chinese Art.It first looks at the concept of “ink art,” describing how it meant different things to different people in the former colony and how these different meanings came to determine certain institutional choices made at the beginning of the 21st century. The following chapters are dedicated to issues related to the urban and rural contexts for art creation in Mainland China and Hong Kong. One chapter observes the ups and downs of the representations of cities in the history of the People’s Republic of China and how they have defined a certain idea of culture. Another looks at how Chinese cities have been exceptional centers of art creations over the last thirty to forty years through the example of Shenzhen where a vibrant art scene, albeit closely connected to Hong Kong which has b

Greek mythology meets cute talking animals in this first adventure in a hilarious new middle grade fiction series, starring Zeus the mighty…king of the gods…ruler of minions…HAMSTER, and the crazy crew of critters of the Mount Olympus Pet Center.Zeus the Mighty 精裝本共5本。希臘神話有很多寓意深遠的故事，比如自戀的水仙，或是阿波羅與月桂樹的故事。這個系列改編希臘神話裡的故事，用會說話的動物們作為主角，以詼諧有趣的敘述方式，與眾神互動，完成一個個冒險任務。藍思值 680LZeus the Mighty #1: The Quest for the Golden Fleas 尋找金羊毛Zeus the Mighty #2: The Maze of the Menacing Minotaur 險惡的牛頭怪迷宮Zeus the Mighty #3: The Trials of Hairy-Clees 毛怪克利斯的審判Zeus the Mighty #4: The Epic Escape from the Underworld 逃離地獄Zeus the Mighty #5: The Voyage on the Oddest Sea 最奇怪的海上航行

序The publisher invites Japanese readers and Satoyama supporters to spread these stories of harmonious coexistence between humanity and nature in rural communities in Taiwan, and to keep telling the story of the Satoyama Initiative. Let us keep learning from one another through exchange, strengthening the friendship between Taiwan and Japan on the road to landscape restoration, and contributing to global biodiversity. We are all in this together, and we can do it together.內容簡介There are four books in the set, about four rural communities in Taiwan. First, The Spring on the Highland explains how two generations of farmers in Gonglaoping, Fengyuan District, Taichung enjoy the fruits of kinship with the land following the restoration of the spring on the highland. Second, Farming Village Co. Unlimited is about a Satoyama-inspired enterprise based on crop diversification and creative local produce marketing in Gongrong, Sanzhi District, New Taipei City. Third, Letters the Blue Sea Wrote to t

Fairy Tale Land opens the gates to the magical land where all the fairy tale characters live. Get lost in this visually stunning, oversized gift book that features all the well-loved stories, and immerse yourself in their enchanting world! The tales are expertly retold, perfect for bedtime, and each story is followed with an exquisitely illustrated, detailed map of its neighbourhood. You can drop into Hansel and Gretel's cottage, explore the palace from Beauty and the Beast, and dive deep under the sea with the Little Mermaid.What wonderful things can you find in your favourites' homes?Beautiful, stylish and vibrant illustrations adorn each page, as the magical text transports readers to faraway lands of mystery, fantasy and magic. Stunning full-page artworks and the detailed maps of the lands in which these stories take place mean this title will be lovingly pored over time and time again. The stories include: The Little MermaidThe NutcrackerCinderellaThe Jungle BookThe Wizard of OzHa

蒂姆・沃克：每張相片的確都是寫給V&A博物館內某件事物，或是給某些東西的情書。我跟那些事物的關係就像是跟某個對象墜入愛河一樣。這連結到我們身而為人如何互動，如何與某個人成為莫逆之交。這是一個結交新朋友的過程⋯⋯V&A博物館迷人特展《蒂姆‧沃克：美妙事物》，帶您一同遨遊這位舉世聞名的攝影師奇幻豐富的心靈世界。蒂姆‧沃克（Tim Walker, b. 1970）是世界頂尖的攝影師之一，

A comprehensive and current introduction to the fundamentals of regression analysisIntroduction to Linear Regression Analysis, 6th Edition is the most comprehensive, fulsome, and current examination of the foundations of linear regression analysis. Fully updated in this new sixth edition, the distinguished authors have included new material on generalized regression techniques and new examples to help the reader understand retain the concepts taught in the book.The new edition focuses on four key areas of improvement over the fifth edition: New exercises and data setsNew material on generalized regression techniquesThe inclusion of JMP software in key areasCarefully condensing the text where possibleIntroduction to Linear Regression Analysis skillfully blends theory and application in both the conventional and less common uses of regression analysis in today's cutting-edge scientific research. The text equips readers to understand the basic principles needed to apply regression model-b