I must first say that 現象 is an odd thing to put on a wall scroll in Asian cultures. It won't make a lot of sense alone unless you have a special or personal meaning that you attach to it for yourself.

These two characters mean phenomenon in Chinese, Japanese, and Korean Hanja. They can also be translated as “a happening,” depending on context.

The sum of these characters is a little different than their individual meanings. But I will break it down anyway...
The first character means present, existing, actual, apparent, now, or current.
The second character alone means pattern after, imitate, image, shape, sign (of the times), form, appearance, to be like, to resemble, to take after, to seem, or elephant.

斯蒂芬 is the name Steaphen in Chinese (Mandarin).

スティーブン is the name Steaphen in Japanese Katakana.

Note: Because this title is entirely Japanese Katakana, it should be written by a Japanese calligrapher.

斯蒂芬 is the name Stephen in Chinese (Mandarin).

ステイーヴェン is the name Stephen in Japanese.

Note: Because this title is entirely Japanese Katakana, it should be written by a Japanese calligrapher.

斯蒂芬妮 is the name Stephenie in Chinese (Mandarin).

斯蒂芬斯 is the name Stephens in Chinese (Mandarin).

ステファンズ is the name Stephens in Japanese (Katakana).

Note: Because this title is entirely Japanese Katakana, it should be written by a Japanese calligrapher.

斯蒂芬森 is the name Stephenson in Chinese (Mandarin).

スティーブンソン is the name Stephenson in Japanese Katakana.

Note: Because this title is entirely Japanese Katakana, it should be written by a Japanese calligrapher.