Enterprise

Traditional model (µ₃ = 0 and µ₄ = 0)

Improved model (0 < µ₃, µ₄ ≤1 )

θ

θ₁

θ₂

θ

θ₁

θ₂

Taisheng Wind Energy

0.525

0.634

0.081

0.728

0.634

0.556

Shanghai Electric

0.500

0.265

0.209

0.651

0.265

0.519

Space Rainbow

0.476

1.000

0.043

0.774

1.000

0.627

Nandu Power Supply

0.426

0.357

0.158

0.535

0.357

0.389

Sunrise in the East

0.351

0.141

0.386

0.572

0.141

0.582

Yijing Optoelectronics

0.291

0.172

0.195

0.500

0.172

0.449

Shanshan Shares

1.000

0.853

0.288

1.000

0.853

0.613

Hengdian Dongci

0.746

0.411

0.171

0.774

0.411

0.694

Jingsheng Electromechanical

0.462

0.198

0.253

0.980

0.198

0.979

Foster

0.886

0.207

0.467

0.951

0.207

0.938

Bowei Alloy

0.515

0.366

0.151

0.560

0.366

0.402

Zhengtai Electric

0.819

0.086

0.787

0.938

0.086

0.988

Guodian Nari

0.328

0.070

0.483

0.874

0.070

0.852

Sinoma Technology

0.449

0.337

0.122

0.651

0.337

0.546

Tianshun Wind Energy

0.468

0.171

0.285

0.729

0.171

0.697

Aikang Technology

1.000

0.512

0.278

1.000

0.512

0.520

Huaguang Co., Ltd.

0.417

0.173

0.382

0.700

0.173

0.641

Jiangsu Shentong

0.475

0.306

0.144

0.839

0.306

0.746

GuoXuan Technology

0.728

0.216

0.290

0.970

0.216

0.944

Zhonglai Shares

0.673

0.139

0.465

0.877

0.139

0.845

Zhongtian Technology

0.553

0.217

0.281

0.640

0.217

0.587

Solar power

0.351

0.040

1.000

0.929

0.040

1.000

Mean value

0.565

0.312

0.315

0.781

0.312

0.687

Variance

0.045

0.061

0.051

0.027

0.061

0.039