2025年7月27日 星期日

日本研發出全球首款月光下也能運作的透明太陽能板

 日本研發出全球首款月光下也能運作的透明太陽能板

在大阪郊外的一個實驗室裡,工程師們正在測試能夠發電的玻璃窗——而且可以直接透過玻璃窗看到外面的景象。這些可不是普通的太陽能板。研究人員利用一種名為鈣鈦礦的稀有材料,研發出透明的光伏板,不僅可以將陽光、室內環境光甚至月光轉化為電能。

傳統的矽太陽能板會阻擋光線,需要陽光直射才能有效率運作。但這些透明電池板採用奈米級鈣鈦礦層,可以選擇性地吸收紫外線和紅外線——人眼看不見的光線部分。這使得可見光能夠穿透,同時仍在後台靜默發電。

其影響深遠。這些玻璃板可以取代摩天大樓的窗戶、汽車擋風玻璃、溫室屋頂,甚至智慧型手機螢幕——幾乎將任何表面轉化為能源。一家位於東京的新創公司已經完成了一個溫室原型的安裝,這些玻璃板可以為風扇和感測器供電,同時不會阻擋植物所需的陽光。

與傳統太陽能板不同,這些太陽能電池板可以在低光源環境下工作——月光、室內LED燈或陰天仍然能產生少量但可用的電能。這使得它們非常適合缺乏可靠照明的離網住宅或緊急避難所。它們也顯著減輕重量,易於製造,預計將太陽能成本降低40%。

耐用性現在是最後一道關卡。眾所周知,鈣鈦礦在潮濕和高溫下不穩定,但日本理化學研究所設計了一種新的封裝方法,使用石墨烯注入聚合物,可將使用壽命延長至20年以上——與目前的太陽能技術相當。

日本的新型太陽能玻璃可能會引領我們走向一個能源從每個窗戶、每一面牆壁,甚至夜晚無形中湧現的未來。

2025年7月24日 星期四

Joel來談日本:「增量優惠」活動失去興趣

 Joel來談日本

隨著時間推移,許多人漸漸發現自己常會在生活中遇到一些讓人意識到「不再年輕」的瞬間。無論是忘記熟人的名字、將交通卡當成公司識別證使用,甚至把冷氣遙控器誤認為手機,這些微妙卻真實的失誤,不僅令人苦笑,也反映出生活節奏與年齡變化的交錯。此外,對於「增量優惠」活動失去興趣,也被視為其中一種心理上的轉變。
這類促銷手法在日本市場仍然活躍,甚至出現極端版本。例如Lawson的「盛りすぎチャレンジ」與全家的「大約40%增量作戰」,皆以增加商品份量吸引消費者。
最近更有漢堡王於7月11日推出與日本相撲協會聯名的限時商品「BABY BODY BURGER」,單價高達2590日圓,由五片牛肉漢堡排堆疊而成,總重達668克、熱量逼近1876千卡,搭配廣告標語「肉與肉的相撲對決」,彷彿挑戰胃的極限。
此外,日清與PEYOUNG等食品品牌也推出超大份即食麵,將「爆量」產品發展為一種獨立食文化。但在這一切喧鬧的促銷背後,日本人實際的飲食習慣卻出現截然相反的趨勢。
在高熱量廣告遍佈的現象背後,日本人的實際飲食量卻逐年減少。根據本川裕於《統計で問い直す はずれ値だらけの日本人》一書中的分析,日本在經濟合作與發展組織(OECD)成員國中,男女的平均BMI值皆為全球最低,被稱為「世界最纖瘦國民」。書中分析其可能原因,認為日本人長年以來以米食為主,加上日常活動量高,造就出較為輕盈的體型與飲食習慣。
此外,日本的每日人均供應熱量自1990年代便開始呈現下降趨勢,成為唯一在此方面出現明顯減少的已開發國家。與中國、韓國、美國、歐洲各國等相比,日本的每日熱量攝取已遠遠落後於其他先進國家。更令人驚訝的是,根據書中指出,若不計入營養不足的貧困國家如奈及利亞與印度,日本幾乎成為「全球最小食的國家」。
這樣的現象也與國民體格變化相互呼應。韓國與中國的平均身高仍持續上升,而日本則早已停滯,暗示小食化與體格縮小可能形成一種循環。是老齡化影響食慾?還是對健康的關注加深?又或者是年輕人傾向草食文化與飲食精緻化?目前仍無定論,但「日本人食量明顯變少」的事實已不可忽視。
儘管整體飲食趨勢逐漸轉向小量精緻化,但「爆量」策略仍持續受到商家青睞,這並非單純為了提升銷售額或刺激食慾,更與人類心理中的「逆勢需求」有關。當主流趨勢趨向節制時,刻意選擇反方向的行動,反而更容易吸引眼球,營造話題性。
這與全球化與在地化的拉鋸邏輯相似:在全球同質化加劇之際,地方文化的價值與特色反而被重新發掘。同樣地,當「小食文化」逐漸主導日本社會的飲食思維時,強調「盛りすぎ」的商品反而顯得新鮮、有趣、甚至帶有某種挑戰性的娛樂價值。對消費者而言,不見得真會全部吃完,但其象徵的「滿足感」與「豪氣消費」仍然具有誘因。
同時,隨著飲食習慣日趨多元化,一些創新應用也應運而生。例如,專門根據糖質量或熱量分類餐廳與商品的用戶投稿型美食平台,讓注重健康或控制飲食的人也能方便尋找合適的餐點,體現出市場對精緻化飲食需求的細緻回應。
當我們將「小食化」現象從個人健康層面延伸至社會心理,會發現更深層的國民性與文化特質。《統計で問い直す》一書中也收錄了其他與「日本人獨特性」有關的數據,其中之一是日本人對政府與權威機構的信任度極低。在面對「是否認為應順從政府決策」的問題時,日本受訪者給出高度否定的反應,顯示他們對政治權力的不信任感異常強烈。
與此同時,日本也是全球最不期待政府提供社會保障的國家之一。即便並非處於富裕環境,仍有高度的自立精神,這或許源於根深蒂固的「不給他人添麻煩」文化意識。這種特有的價值觀不僅影響政治態度,也潛移默化地滲透至日常生活,包括飲食習慣與社會互動方式。
有趣的是,儘管社會壓力不小,日本女性、高齡者與低學歷者等族群,在全球範圍內卻擁有相對較低的負面情緒指數,這與國際間常見的社會階層焦慮形成鮮明對比。這樣的情況或許可歸因於日本社會階層差異較小,彼此之間較無隔閡。例如,美國經濟學者諾亞・史密斯(Noah Smith)便指出,日本是一個「人與人之間能自然混居」的社會,即使是東京大學的學生也會與來自各行各業的人交朋友,這種平權感極為罕見。
史密斯亦提出一個引人關注的觀點:儘管日本作為經濟大國的地位有所下降,但其文化吸引力與社會形態卻越來越受國際社會重視,這正是「Weeb(ウィーブ)」文化盛行的根源——這群熱愛日本文化的國際支持者,看重的正是日本社會內部的獨特和諧與包容性。
日本人日益顯著的小食化現象,不僅是一種健康趨勢或經濟考量,更與整體社會結構、文化心理以及對個體自立精神的重視密不可分。雖然「盛りすぎ」式的促銷仍具有市場吸引力,但其實更多代表的是一種文化上的逆向張力——在壓縮與節制的主旋律下,展現一種反叛式的情感出口。
這樣的現象提醒我們,食物不只是生理需求的反映,更是價值觀與社會心態的縮影。在面對人口老化、經濟轉型與價值重塑的多重壓力下,日本社會透過飲食習慣的變化,悄然訴說著一段屬於這個國家的獨特敘事。而我們在觀察這樣的轉變時,也許該從食慾背後,看見人們對於生活、社會與自我存在方式的再定義。
參考資料:日經新聞

2025年7月23日 星期三

「史無前例」的投資基金為日本敲定協議,擴大川普的影響力

 「史無前例」的投資基金為日本敲定協議,擴大川普的影響力

白宮表示,川普總統將決定日本資金的投資方向,美國將保留90%的利潤。
‘Unprecedented’ Investment Fund Seals Deal for Japan and Expands Trump’s Influence
President Trump will get to decide where to invest Japanese money and the United States will keep 90 percent of the profits, the White House said.

日本防衛省首次正式參與由美國、英國與澳洲所組成的防衛合作機制「AUKUS」舉辦的水中無人機實驗演習

 Joel來談日本

日本防衛省於 7 月 23 日宣布,首次正式參與由美國、英國與澳洲所組成的防衛合作機制「AUKUS」舉辦的水中無人機實驗演習。過去日本僅以觀察員身分參與,此次是首度以正式成員身份加入,並與三國共同驗證水中聲波通訊技術。
演習於 7 月 16 日至 17 日在澳洲東南部的賈維斯灣進行,主要針對水中無人機之間的相互操作性進行技術評估。這項合作被視為強化 AUKUS「第二支柱」的重要一環,即針對人工智慧、量子運算與無人系統等尖端技術的聯合研發與應用。
AUKUS 在 2024 年初就已表明將在先進技術領域與日本展開合作,並率先鎖定海洋無人機系統的協同操作能力。2024 年 10 月,日本防衛裝備廳人員與自衛官便曾以觀察員身份參與相關演習。此外,AUKUS 也正與日本洽談,共同研究可與戰鬥機協同飛行的無人機所搭載的人工智慧技術。
AUKUS 成立於 2021 年,包含兩大核心:一為協助澳洲部署核動力潛艦的「第一支柱」,另一則為發展以 AI、量子科技、無人機等為主的「第二支柱」。此次與日本在第二支柱展開合作,背景原因之一是中國在印太地區影響力持續上升。
中國正推動軍民兩用的「智能化」發展路線,積極在軍事領域應用 AI 和量子科技,以擴大其軍事實力。日本雖積極推動先進技術應用,但在人工智慧與無人系統的國際競爭中仍處於相對落後位置。因此透過與 AUKUS 的技術協作,日本希望提升自身國防科技的整體實力,進一步強化安全保障體系。
參考資料:日經新聞

2025年7月21日 星期一

日本參政黨/参政党Sanseitō

日本参政党(Sanseito)在本次参议院选举中取得突破,赢得了14个席位,加上之前1席,这个反移民政党在参议院控制了15个席位,撼动了日本的传统政党。


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https://en.wikipedia.org › wiki › Sanseitō



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https://sanseito.jp › english






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Sanseitō
Political party


Sanseitō is a right-wing populist political party in Japan. The party was founded in 2020 and won a seat in the 2022 House of Councillors election, also becoming an official political party by winning more than 2% of the vote in the election. The party promotes COVID-19 misinformation and anti-vaccine views. Wikipedia
Founded: March 17, 2020
Country: Japan

2025年7月12日 星期六

禊,流觴曲水,「禊の儀」/ NewsToyotomi Hideyoshi, Nene Entokuin, 高台寺 Kodaiji

禊,流觴曲水,「禊の儀」
 
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石塀小路 Nene no Michi


Dec 22, 2022 — Entokuin is a tatchu, sub-temple of Kodaiji Temple. Nene lived here, Entokuin and went to Kodaiji Temple walking up and down this slope every day.

Nene and Kodaiji Temple, Kyoto

Nene saw her husband's Kingdom burnt to ashes from here

Nene, later called 'Kita-no-mandocoro' or 'Kodai-in', was the official wife of Toyotomi Hideyoshi, the man who dominated Japan (1590 - 1598) before Tokugawa Shogunate seized total control of the country (1603 - 1867). I call her an 'official wife' because at the time, many daimyos (lords) had multiple wives, including mistresses. The brave are susceptible to female charms, aren't they? In her case, her husband Hideyoshi was a well-known womanizer, who had more than 100 mistresses. But she reigned supreme among them, since she was a very intelligent, reliable, lovable woman and Hideyoshi trusted her more than anyone. After Hideyoshi's death, she entered nunhood, had Kodaiji Temple built in Kyoto to retire to, and lived there till her death, praying for her demised husband's soul.

What I wrote above, is nothing but ordinary...a widowed wife becomes a nun and prays for her husband's soul; many women in high positions did that in those days, didn't they? But this temple has more to it than just being an ordinary retreat for a high-ranking woman. Because, Tokugawa Ieyasu, her husband's ex-colleague, later loyal subject, and enemy after his death, built it for her! Does it sound like an ordinary temple now?

Nene's Decision

To make a long story short, when her husband passed away, she knew his kingdom had come to an end, as there was no way his young child (Toyotomi Hideyori, the son of a mistress, age 5 when Hideyoshi died) could rule Japan, so she decided to support Tokugawa Ieyasu, the most powerful samurai after her husband's death, in hope that he'd preserve the Toyotomi Clan (family) as one of his subjects. That's how her husband Hideyoshi had taken over the Oda Clan's power when Nobunaga died in the first place, wasn't it?

What Nene did

When Hideyoshi, her husband, died, she was living in the large, magnificent Osaka Castle. As soon as he passed away, she handed over her spacious living quarters to Ieyasu and told him, "I'd like to retire to Kyoto to pray for my husband's soul. I'd like to have a temple there". She didn't have to ask her husband's subject, Ieyasu, of course. But it was a sophisticated way to show her intention to 'support' him. Ieyasu was at the time one of five Tairos (directors) in Toyotomi administration, so as the most powerful Tairo, he executed her request. Also, he decided to give her an annual allowance of 5,000 Goku (3.75 million dollars in modern currency), a life-long guarantee! But all of this came not from his own pocket, but from her husband's kingdom's assets and revenue...Ieyasu was frugal, indeed.

What Ieyasu did

Ieyasu knew how important it was to grab Nene's heart, because some of Hideyoshi's former subjects would follow her orders (There were mainly two groups of subjects, Nene's side and those of Hideyoshi's No. 1 mistress, the mother of his heir, Yodo's side). So, he treated her with utmost care, ordered some of his subjects to build Kodaiji Temple as she desired, and after it was built, often visited her there with lavish gifts in hand. As he visited so frequently there was even a rumor that the two of them were having an 'affair' at the time! Even after he completely destroyed Toyotomi Clan by burning Osaka Castle to ashes in 1615, he preserved the Asano Clan, her maiden family, which lasted as long as the samurai era continued, until the Meiji Restoration (1868).

Nene's retirement life

She instructed her former husband's subjects to 'follow Ieyasu's orders', and so thanks to her instructions, they fought in the Battle of Sekigahara on Ieyasu's side and contributed in his winning the battle. After the battle, she suggested Yodo, her husband's mistress and his son's mother, many times to compromise and leave Osaka Castle, but Yodo didn't listen. Different from Nene, Yodo, the mistress, was not so wise and believed that Ieyasu would let her child rule Japan in the future. How naive! In the end, Ieyasu made an irrational, but calculated accusation that part of the inscription on the bell of the Hokoji Temple which Yodo's child, Hideyori, was having built, was an intentional curse upon him, used it as an excuse to attack Osaka Castle, and destroyed the Toyotomi Clan once and for all. When Ieyasu tried to destroy Toyokuni Shrine in Kyoto, in which Nene's husband Hideyoshi was enshrined as God, Nene begged him not to do it. Upon her request, instead of destroying the shrine to the ground, he let it stand, but took away Hideyoshi's God's status and forbade anyone's entrance to the place. Nene died in 1624, at the age of 76 or 77, outliving Ieyasu by eight years. He died in 1616.

She might have seen the pride of her husband's kingdom, which she built with him together, Osaka Castle, burnt to ashes from here in Kodaiji Temple. She also had to see his shrine rot to ground, abandoned. She saw everything...and I just can't help wondering what she thought and felt living in this beautiful place, Kodaiji...

All photos, except for the portrait of Nene, which is a public domain photo, are courtesy of Larry Knipfing.